US20160158620A1 - Bicycle trainer - Google Patents
Bicycle trainer Download PDFInfo
- Publication number
- US20160158620A1 US20160158620A1 US14/983,737 US201514983737A US2016158620A1 US 20160158620 A1 US20160158620 A1 US 20160158620A1 US 201514983737 A US201514983737 A US 201514983737A US 2016158620 A1 US2016158620 A1 US 2016158620A1
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- United States
- Prior art keywords
- bicycle
- roller
- motor
- bicycle trainer
- connecting arm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B69/00—Training appliances or apparatus for special sports
- A63B69/16—Training appliances or apparatus for special sports for cycling, i.e. arrangements on or for real bicycles
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/005—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using electromagnetic or electric force-resisters
- A63B21/0058—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using electromagnetic or electric force-resisters using motors
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B24/00—Electric or electronic controls for exercising apparatus of preceding groups; Controlling or monitoring of exercises, sportive games, training or athletic performances
- A63B24/0087—Electric or electronic controls for exercising apparatus of groups A63B21/00 - A63B23/00, e.g. controlling load
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/06—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement
- A63B22/0605—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement performing a circular movement, e.g. ergometers
- A63B2022/0635—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement performing a circular movement, e.g. ergometers specially adapted for a particular use
- A63B2022/0641—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement performing a circular movement, e.g. ergometers specially adapted for a particular use enabling a lateral movement of the exercising apparatus, e.g. for simulating movement on a bicycle
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B24/00—Electric or electronic controls for exercising apparatus of preceding groups; Controlling or monitoring of exercises, sportive games, training or athletic performances
- A63B24/0087—Electric or electronic controls for exercising apparatus of groups A63B21/00 - A63B23/00, e.g. controlling load
- A63B2024/009—Electric or electronic controls for exercising apparatus of groups A63B21/00 - A63B23/00, e.g. controlling load the load of the exercise apparatus being controlled in synchronism with visualising systems, e.g. hill slope
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B69/00—Training appliances or apparatus for special sports
- A63B69/16—Training appliances or apparatus for special sports for cycling, i.e. arrangements on or for real bicycles
- A63B2069/161—Training appliances or apparatus for special sports for cycling, i.e. arrangements on or for real bicycles supports for the front of the bicycle
- A63B2069/162—Training appliances or apparatus for special sports for cycling, i.e. arrangements on or for real bicycles supports for the front of the bicycle for front fork or handlebar
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B69/00—Training appliances or apparatus for special sports
- A63B69/16—Training appliances or apparatus for special sports for cycling, i.e. arrangements on or for real bicycles
- A63B2069/164—Training appliances or apparatus for special sports for cycling, i.e. arrangements on or for real bicycles supports for the rear of the bicycle, e.g. for the rear forks
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B69/00—Training appliances or apparatus for special sports
- A63B69/16—Training appliances or apparatus for special sports for cycling, i.e. arrangements on or for real bicycles
- A63B2069/166—Training appliances or apparatus for special sports for cycling, i.e. arrangements on or for real bicycles supports for the central frame of the bicycle, e.g. for the crank axle housing, seat tube or horizontal tube
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B69/00—Training appliances or apparatus for special sports
- A63B69/16—Training appliances or apparatus for special sports for cycling, i.e. arrangements on or for real bicycles
- A63B2069/168—Force transfer through the rim of the wheel
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/00181—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices comprising additional means assisting the user to overcome part of the resisting force, i.e. assisted-active exercising
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2220/00—Measuring of physical parameters relating to sporting activity
- A63B2220/50—Force related parameters
- A63B2220/51—Force
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2220/00—Measuring of physical parameters relating to sporting activity
- A63B2220/70—Measuring or simulating ambient conditions, e.g. weather, terrain or surface conditions
- A63B2220/78—Surface covering conditions, e.g. of a road surface
Definitions
- the present concept relates to bicycle trainers and more particularly relates to a bicycle trainer that can simulate actual road conditions and utilize the riders own bicycle for the training exercise.
- the exercise device described in U.S. Pat. No. 7,862,476 does not enable the person to utilize his or her own bicycle nor does it simulate real road conditions, in particular it does not simulate the freedom of movement available on a regular bicycle in real life conditions.
- the present concept a bicycle trainer comprising:
- a motor assembly which includes a frame for housing the roller and motor and rigidly connecting the motor assembly to the stand, the motor is pivotally mounted to the frame about its shaft, such that the motor and roller rotate in proportional unison with each other.
- the motor assembly further including a force sensor for measuring the tangential force between the roller and the bicycle.
- the motor is rigidly mounted to a base plate which has a top side and bottom side which is free to pivot with the motor.
- the motor assembly includes the force sensor in contact with one side of the plate, and a spring on the other side of the plate such that the force sensor and spring restrict the rotational deflection of the base plate and thereby measure the tangential force between the roller.
- the force sensor and spring are opposing each other mounted on opposite sides of the plate, in order to maintain positive bias of force on the force sensor.
- the force sensor is chosen from the group comprising piezo electric, and strain gauge and load cell and magneto elastic transducers.
- the present concept is a bicycle trainer for use with a bicycle with its front tire removed from the fork dropout comprising:
- the flexible connecting arm is dimensioned and selected to allow torsional flex of the flexible connecting arm such that the bicycle will rock back and forth along a rocking arc when the rider imparts torsional forces onto the stand.
- a motor assembly which includes a frame for housing the roller and motor and also for rigidly connecting the motor assembly to the stand, the motor is rotationally mounted about its shaft with limited pivotal movement to the frame, such that the motor and roller rotate in proportional unison with each other.
- the motor assembly further includes a means for measuring force.
- FIG. 1 is a schematic perspective view of a bicycle trainer which includes a bicycle mounted onto a stand and a motor assembly.
- FIG. 2 is a schematic partial elevational view of the motor assembly showing part of the rear tire and rear wheel of the bicycle, and the motor assembly.
- FIG. 3 is a flow diagram showing in schematic fashion the method of control of the motor.
- FIG. 4 is a schematic perspective view of a further embodiment of a bicycle trainer which includes a bicycle mounted onto a stand and a motor assembly.
- a bicycle trainer shown generally as 100 in FIG. 1 includes the following major components namely bicycle 102 , a stand 104 , and a motor assembly 106 .
- Bicycle 102 includes all of the normal components of a bicycle except for the front wheel which has been removed from the front fork 108 .
- Bicycle 102 therefore will include all of the normal components found in a bicycle including handle bars 110 attached to a bicycle frame 112 , including a seat 114 , pedals 116 , a set of front sprockets 118 , a rear wheel 120 having mounted thereon a rear tire 122 , a chain 124 , engaging with a set of rear sprockets 126 .
- Bicycle 102 will also include the normal front and rear gear changing device which normally is a front de-railer for selecting a front sprocket 118 and a rear gear selector for selecting one of the rear sprockets 126 thereby allowing the rider of the bicycle to choose the gear ratio.
- the normal front and rear gear changing device which normally is a front de-railer for selecting a front sprocket 118 and a rear gear selector for selecting one of the rear sprockets 126 thereby allowing the rider of the bicycle to choose the gear ratio.
- Stand 104 includes a fork support 130 onto which front fork 108 of bicycle 102 is mounted using fork nuts 133 .
- Fork support 130 is connected to a flexible support arm 132 which in turn is attached to connecting arm 134 and outriggers 136 .
- Connecting arm 134 is connected at 1 st end 140 to outriggers 136 and flexible support arm 132 and at a 2 nd end 142 to motor assembly 106 .
- Motor assembly 106 includes a frame 150 which houses a roller 152 which is connected with a common shaft 154 to a motor 156 .
- FIG. 2 is a schematic side elevational view of the motor assembly 106 showing frame 150 connected to connecting arm 134 at a 2 nd end 142 .
- the shaft 154 of motor 156 is mounted via bearings onto frame 150 using motor support 162 .
- motor 156 is free to rotate about shaft 154 except for the fact that the motor base plate is sandwiched between a force sensor 170 on the upper side 172 of motor base plate 164 and by spring 176 on the lower side 178 of motor base plate 164 .
- the force sensor 170 and the spring 176 are the only elements which prevent or restrict motor 156 from rotating about shaft 154 when torque is being applied to the motor.
- Sensor 170 is mounted onto sensor flange 171 which in turn is mounted into frame 150 .
- the direction of bicycle forward or normal roller rotation is shown as 180 and the upward deflection direction of motor base plate 164 is shown as 182 and the downward deflection direction of motor base plate 164 is shown as 184 .
- Spring 176 is normally biased against motor base plate 164 therefore force sensor 170 normally sees a positive force even when motor 156 is stationary.
- Rear tire 122 makes contact with roller face 151 thereby imparting rotational forces onto roller 152 which is attached to the common shaft 154 shared with motor 156 . Therefore as roller 152 rotates so does the rotor within motor 156 .
- Motor base plate 164 is sandwiched between the force sensor 170 and the spring 176 . Together force sensor 170 and spring 176 prevent the motor 156 from rotating about axis of rotation 190 .
- the pressure on force sensor 173 allows measuring of tangential force between the roller 150 and the bicycle tire 122 .
- Spring 176 provides the necessary positive force bias and allows the use of a single force sensor to measure tangential force on the roller 152 in both directions without resulting in a negative force on force sensor 170 .
- the force sensor may be a piezo electric, strain gauge, load cell, magneto elastic device or other commonly known force sensors or transducers.
- a signal from the force sensor 170 shown as 202 is fed to a computer 204 which then receives and processes inputs from force censor 170 and from user inputs 206 to set the current motor speed via motor control signal 208 to create a motor speed adjustment 210 .
- the system can then calculate instant changes to motor speed 156 according to physical model of cycling in order to simulate instant forces during pedaling as would be experienced by cyclist if he rode in real life under the same input conditions.
- the system easily takes into account macro factors such as headwinds, tailwinds and up or down hill slopes. More importantly the system is fast enough to simulate changes in pedal force such as changes that occur during the stroke of the pedal.
- the system recalculates and applies changes to assistive and resistive forces transmitted to the pedal at a rate of at least 100 times per second which allow real-time simulation of cycling conditions.
- User inputs 206 includes a controller which includes real time data or manufactured data and may include custom data sets and/or formulas describing any particular real or imaginary model of cycling allowing for a real-time simulation of cycling conditions.
- the user inputs may for example include real road condition data which has been previously collected.
- the user of bicycle trainer 100 is able to use the same bicycle 102 which they use in real life conditions.
- the front wheel of bicycle 102 is removed and the front forks 108 of bicycle 102 are connected to a flexible support arm 132 which allows the bicycle to rock freely side to side along rocking arc 131 .
- Roller 152 is directly connected via a common shaft 154 to motor 156 which in practice may be an induction motor however alternative designs may include an out runner type of motor where the motors outer shell may serve as a roller, thereby eliminating the need for a separate motor & roller.
- roller 152 The combination of the roller 152 , the motor 156 are free to rotate about the axis of rotation 190 due to the fact that the roller 152 and motor 156 are mounted onto bearings 160 which allow the motor to freely rotate about axis rotation 190 , with limited pivotal movement due to restriction of force sensor 170 .
- a further embodiment of the present concept a bicycle trainer shown generally as 300 includes a connecting arm 306 with a motor assembly 106 attached at one end thereof.
- Connecting arm 306 includes a longitudinal portion 308 , a support arm 310 , and a fork support 312 .
- Fork support 312 is located at a fork end 314 of connecting arm 306 and is dimensioned to adapt to connect to the front fork dropouts 316 of front fork 318 of bicycle 302 .
- Connecting arm 306 is connected at tire end 320 to motor assembly 106 .
- Connecting arm 306 includes a collar 322 which attaches support arm 310 to a longitudinal portion 308 in addition to a slot 324 for adjusting the positioning of the collar 322 depending on the size of the bicycle.
- Support leg 326 supports connecting arm 306 slightly off of the floor or ground when bicycle trainer 300 is placed onto the floor.
- Connecting arm 306 is made of preselected flexible material and in particular the longitudinal portion 308 of connecting arm 306 is selected to ensure that there is enough torsional flex 328 as shown by the arrows in FIG. 4 to allow for rocking motion of bicycle 302 along rocking arc 330 as shown in FIG. 4 .
- the rider imparts torsional forces onto the stand 304 thereby causing connecting arm 306 and in particular the horizontal portion 308 to flex torsionally as shown as torsional flex 328 in FIG. 4 .
- connecting arm 306 having an outside diameter of 1.25 inches and a wall thickness of 0.095 inches is adequate to provide for enough torsional flex 328 within longitudinal portion 308 of connecting arm 306 to provide for a rocking arc 330 of plus or minus 5 degrees for a total rocking arc of 10 degrees.
- aluminium alloy 6061 having a diameter of 50 mm and a wall thickness of 10 mm will also provide adequate torsional flex 328 to provide for a rocking arc 330 plus or minus 10 degrees for heavy riders and more typically plus or minus 5 degrees for lightweight riders.
- the typical modern day bicycle depicted in FIG. 4 has a length of anywhere from 34 to 44 inches measured from the centre of the front wheel hub to the centre of the rear wheel hub.
- a typical bicycle has a centre to centre wheel distance of approximately 39 inches plus or minus 3 inches.
- the length of longitudinal portion 308 as well as support arm 310 is dimensioned such that the tread of rear tire 122 makes contact with roller 152 as shown in FIG. 4 .
- the collar 322 can be moved along longitudinal portion 308 to accommodate various sizes of bicycles and thereby ensure that the rear tire 122 makes contact with the top of roller face 151 of roller 152 as depicted in FIG. 4 . Collar 322 is locked in any conventional means onto longitudinal portion 308 .
- Motor assembly 106 includes motor 156 which is connected to a common shaft 154 to roller 152 having a roller face 151 .
- rear tire 122 is allowed to move in the lateral direction 140 which will tend to happen during rocking of bicycle 302 along the rocking arc 330 .
- the roller 152 has a width of approximately 5 to 9 inches and preferably approximately 6 to 7 inches which allows for lateral movement of rear tire 122 along the lateral direction 140 of approximately 2 to 3 inches in reaction to any disturbance and particularly as the bicycle is rocked along rocking arc 330 .
- This provides for simulation of real cycling conditions in which when the rider is standing on the pedals and is pedaling often the bicycle 302 will rock back and forth along rocking arc 330 during the pedaling motion and rear tire 122 will move laterally along the lateral direction 140 as a result.
- Motor 156 is rotationally attached to frame 150 at bearings 160 as depicted in FIG. 2 .
- motor 156 The rotation of motor 156 is limited to pivoting action due to the restriction created by the motor base plate 164 impinging upon force sensor 170 on the upper side 172 and a spring 176 on the lower side 178 of motor base plate 164 .
Abstract
The present invention is a bicycle trainer that allows a person to utilize their own bicycle and simulates real and varied road conditions. The device includes the front forks of a bicycle mounted to a stand; the stand including a flexible support arm allowing the bicycle to rock back and forth along a rocking arc; and the rear tire of the bicycle making contact with a roller face of a roller such that the roller is free to rotate in proportion to the rotation of the rear tire. Further, the roller is rotationally connected to a motor for selectively applying resistance and assistance to the rear tire rotation, for simulating real course conditions. Preferably it further includes a motor assembly which includes a frame for housing the roller and motor and rigidly connecting the motor assembly to the stand, the motor is pivotally mounted to the frame about its shaft, such that the motor and roller rotate in proportional unison with each other.
Description
- This application is a continuation in part of U.S. Ser. No. 14/460,459 filed Aug. 15, 2014 by Gary Bauer, Konstantine Poukhov, and Nikolay Bakunin which application claims priority from regularly filed U.S. provisional application No. 61/872,942 filed Sep. 3, 2014 by Gary Bauer, Konstantine Poukhov, Nikolay Bakunin under the title BICYCLE TRAINER.
- The present concept relates to bicycle trainers and more particularly relates to a bicycle trainer that can simulate actual road conditions and utilize the riders own bicycle for the training exercise.
- There are numerous bicycle trainers which are known in the prior art some of which have been patented including U.S. Pat. No. 7,862,476 titled: Exercise Device, by David A. Blau et al. which was issued on Jan. 4, 2011.
- The exercise device described in U.S. Pat. No. 7,862,476 does not enable the person to utilize his or her own bicycle nor does it simulate real road conditions, in particular it does not simulate the freedom of movement available on a regular bicycle in real life conditions.
- Most of the bicycle training devices utilize a rigid stand and/or setup such as that described in U.S. Pat. No. 7,862,476 in which the user will sit in a simulated environment and pedal a bicycle like machine which attempts to simulate real road conditions.
- There is a need for a bicycle training device which allows a user to utilize his own bicycle which the rider has become comfortable with and allow the freedom of movement that a real bicycle allows when pedaling on a normal road surface.
- The present concept a bicycle trainer comprising:
-
- a) the front forks of a bicycle mounted to a stand;
- b) the stand including a flexible support arm allowing the bicycle to rock back and forth along a rocking arc;
- c) the rear tire of the bicycle making contact with a roller face of a roller such that the roller is free to rotate in proportion to the rotation of rear tire;
- d) wherein the roller is rotationally connected to a motor for selectively applying resistance and assistance to the rear tire rotation, for simulating real course conditions.
- Preferably further comprising a motor assembly which includes a frame for housing the roller and motor and rigidly connecting the motor assembly to the stand, the motor is pivotally mounted to the frame about its shaft, such that the motor and roller rotate in proportional unison with each other.
- Preferably wherein the motor assembly further including a force sensor for measuring the tangential force between the roller and the bicycle.
- Preferably wherein the motor is rigidly mounted to a base plate which has a top side and bottom side which is free to pivot with the motor.
- Preferably wherein the motor assembly includes the force sensor in contact with one side of the plate, and a spring on the other side of the plate such that the force sensor and spring restrict the rotational deflection of the base plate and thereby measure the tangential force between the roller.
- Preferably where the force sensor and spring are opposing each other mounted on opposite sides of the plate, in order to maintain positive bias of force on the force sensor.
- Preferably wherein the force sensor is chosen from the group comprising piezo electric, and strain gauge and load cell and magneto elastic transducers.
- Preferably further including a controller which includes data sets for simulating real and imaginary road conditions.
- The present concept is a bicycle trainer for use with a bicycle with its front tire removed from the fork dropout comprising:
-
- a) a stand which includes a flexible connecting arm connected to a motor assembly at a tire end of the flexible connecting arm;
- b) a fork end of the flexible connecting arm dimensioned to attach to the front fork dropout of a bicycle;
- c) the motor assembly includes a roller with a roller face, wherein the rear tire of the bicycle making contact with a roller face of the roller such that the roller is free to rotate in proportion to the rotation of rear tire and further the tire is free to move in a lateral direction across a portion of the face of the roller;
- d) a motor is rotationally connected to the roller for selectively applying resistance and assistance to the rear tire rotation, for simulating real course conditions.
- Preferably wherein the flexible connecting arm is dimensioned and selected to allow torsional flex of the flexible connecting arm such that the bicycle will rock back and forth along a rocking arc when the rider imparts torsional forces onto the stand.
- Preferably also comprising a motor assembly which includes a frame for housing the roller and motor and also for rigidly connecting the motor assembly to the stand, the motor is rotationally mounted about its shaft with limited pivotal movement to the frame, such that the motor and roller rotate in proportional unison with each other.
- Preferably wherein the motor assembly further includes a means for measuring force.
- The concept will now be described by way of example only with reference to the following drawings in which:
-
FIG. 1 is a schematic perspective view of a bicycle trainer which includes a bicycle mounted onto a stand and a motor assembly. -
FIG. 2 is a schematic partial elevational view of the motor assembly showing part of the rear tire and rear wheel of the bicycle, and the motor assembly. -
FIG. 3 is a flow diagram showing in schematic fashion the method of control of the motor. -
FIG. 4 is a schematic perspective view of a further embodiment of a bicycle trainer which includes a bicycle mounted onto a stand and a motor assembly. - The present concept a bicycle trainer shown generally as 100 in
FIG. 1 includes the following major components namelybicycle 102, astand 104, and amotor assembly 106. -
Bicycle 102 includes all of the normal components of a bicycle except for the front wheel which has been removed from thefront fork 108. -
Bicycle 102 therefore will include all of the normal components found in a bicycle includinghandle bars 110 attached to a bicycle frame 112, including aseat 114,pedals 116, a set offront sprockets 118, arear wheel 120 having mounted thereon arear tire 122, achain 124, engaging with a set ofrear sprockets 126. - Bicycle 102 will also include the normal front and rear gear changing device which normally is a front de-railer for selecting a
front sprocket 118 and a rear gear selector for selecting one of therear sprockets 126 thereby allowing the rider of the bicycle to choose the gear ratio. -
Stand 104 includes afork support 130 onto whichfront fork 108 ofbicycle 102 is mounted usingfork nuts 133.Fork support 130 is connected to aflexible support arm 132 which in turn is attached to connectingarm 134 andoutriggers 136. - Connecting
arm 134 is connected at 1stend 140 tooutriggers 136 andflexible support arm 132 and at a 2ndend 142 tomotor assembly 106. -
Motor assembly 106 includes aframe 150 which houses aroller 152 which is connected with acommon shaft 154 to amotor 156. - Referring now to
FIG. 2 which is a schematic side elevational view of themotor assembly 106 showingframe 150 connected to connectingarm 134 at a 2ndend 142. - The
shaft 154 ofmotor 156 is mounted via bearings ontoframe 150 usingmotor support 162. - Therefore
motor 156 is free to rotate aboutshaft 154 except for the fact that the motor base plate is sandwiched between aforce sensor 170 on theupper side 172 ofmotor base plate 164 and byspring 176 on thelower side 178 ofmotor base plate 164. - In other words the
force sensor 170 and thespring 176 are the only elements which prevent or restrictmotor 156 from rotating aboutshaft 154 when torque is being applied to the motor.Sensor 170 is mounted ontosensor flange 171 which in turn is mounted intoframe 150. - The direction of bicycle forward or normal roller rotation is shown as 180 and the upward deflection direction of
motor base plate 164 is shown as 182 and the downward deflection direction ofmotor base plate 164 is shown as 184. -
Spring 176 is normally biased againstmotor base plate 164 thereforeforce sensor 170 normally sees a positive force even whenmotor 156 is stationary. - As torque is applied to
motor 156 the reaction force of this torque will be measured byforce sensor 170 thereby being able to measure instantaneously at any point in time the force being generated bymotor 156 againstforce sensor 170. -
Rear tire 122 makes contact withroller face 151 thereby imparting rotational forces ontoroller 152 which is attached to thecommon shaft 154 shared withmotor 156. Therefore asroller 152 rotates so does the rotor withinmotor 156. -
Motor base plate 164 is sandwiched between theforce sensor 170 and thespring 176. Togetherforce sensor 170 andspring 176 prevent themotor 156 from rotating about axis ofrotation 190. The pressure on force sensor 173 allows measuring of tangential force between theroller 150 and thebicycle tire 122. -
Spring 176 provides the necessary positive force bias and allows the use of a single force sensor to measure tangential force on theroller 152 in both directions without resulting in a negative force onforce sensor 170. The force sensor may be a piezo electric, strain gauge, load cell, magneto elastic device or other commonly known force sensors or transducers. - Referring now to
FIG. 3 a signal from theforce sensor 170 shown as 202 is fed to acomputer 204 which then receives and processes inputs fromforce censor 170 and fromuser inputs 206 to set the current motor speed viamotor control signal 208 to create amotor speed adjustment 210. Taking into account force value from theforce sensor 170,current motor speed 156 and input parameters such as current road grade, combined weight of cyclist and the bike and wind speed the system can then calculate instant changes tomotor speed 156 according to physical model of cycling in order to simulate instant forces during pedaling as would be experienced by cyclist if he rode in real life under the same input conditions. One can impart resistive or assisting forces torear tire 122. The system easily takes into account macro factors such as headwinds, tailwinds and up or down hill slopes. More importantly the system is fast enough to simulate changes in pedal force such as changes that occur during the stroke of the pedal. - The system recalculates and applies changes to assistive and resistive forces transmitted to the pedal at a rate of at least 100 times per second which allow real-time simulation of cycling conditions.
-
User inputs 206 includes a controller which includes real time data or manufactured data and may include custom data sets and/or formulas describing any particular real or imaginary model of cycling allowing for a real-time simulation of cycling conditions. - The user inputs may for example include real road condition data which has been previously collected.
- The user of
bicycle trainer 100 is able to use thesame bicycle 102 which they use in real life conditions. - The front wheel of
bicycle 102 is removed and thefront forks 108 ofbicycle 102 are connected to aflexible support arm 132 which allows the bicycle to rock freely side to side along rockingarc 131. - The reader will note that the
rear tire 122 mounted to therear wheel 120 is free to move and rock side to side due to the fact that the only contact point is on theroller face 151 ofroller 152. - Therefore as the user rides
bicycle 102 it is free to rock side to side wherein the degree of freedom of movement is dependent upon the flexibility offlexible support arm 132. -
Roller 152 is directly connected via acommon shaft 154 tomotor 156 which in practice may be an induction motor however alternative designs may include an out runner type of motor where the motors outer shell may serve as a roller, thereby eliminating the need for a separate motor & roller. - The combination of the
roller 152, themotor 156 are free to rotate about the axis ofrotation 190 due to the fact that theroller 152 andmotor 156 are mounted ontobearings 160 which allow the motor to freely rotate aboutaxis rotation 190, with limited pivotal movement due to restriction offorce sensor 170. - A further embodiment of the present concept a bicycle trainer shown generally as 300 includes a connecting
arm 306 with amotor assembly 106 attached at one end thereof. -
Connecting arm 306 includes alongitudinal portion 308, asupport arm 310, and a fork support 312. Fork support 312 is located at afork end 314 of connectingarm 306 and is dimensioned to adapt to connect to thefront fork dropouts 316 offront fork 318 ofbicycle 302. - In order to mount
bicycle 302 to thestand 304 the front tire ofbicycle 302 is removed thereby exposing thefront fork dropout 316 which then can be connected to fork support 312 as shown and depicted inFIG. 4 . -
Connecting arm 306 is connected attire end 320 tomotor assembly 106.Connecting arm 306 includes acollar 322 which attachessupport arm 310 to alongitudinal portion 308 in addition to aslot 324 for adjusting the positioning of thecollar 322 depending on the size of the bicycle.Support leg 326supports connecting arm 306 slightly off of the floor or ground whenbicycle trainer 300 is placed onto the floor. -
Connecting arm 306 is made of preselected flexible material and in particular thelongitudinal portion 308 of connectingarm 306 is selected to ensure that there is enoughtorsional flex 328 as shown by the arrows inFIG. 4 to allow for rocking motion ofbicycle 302 along rockingarc 330 as shown inFIG. 4 . The rider imparts torsional forces onto thestand 304 thereby causing connectingarm 306 and in particular thehorizontal portion 308 to flex torsionally as shown astorsional flex 328 inFIG. 4 . - It has been found in practice that the use of 4130 alloy steel for the components of connecting
arm 306 having an outside diameter of 1.25 inches and a wall thickness of 0.095 inches is adequate to provide for enoughtorsional flex 328 withinlongitudinal portion 308 of connectingarm 306 to provide for a rockingarc 330 of plus or minus 5 degrees for a total rocking arc of 10 degrees. - It has also been found that using aluminium alloy 6061 having a diameter of 50 mm and a wall thickness of 10 mm will also provide adequate
torsional flex 328 to provide for a rockingarc 330 plus or minus 10 degrees for heavy riders and more typically plus or minus 5 degrees for lightweight riders. - The typical modern day bicycle depicted in
FIG. 4 has a length of anywhere from 34 to 44 inches measured from the centre of the front wheel hub to the centre of the rear wheel hub. A typical bicycle has a centre to centre wheel distance of approximately 39 inches plus or minus 3 inches. - The length of
longitudinal portion 308 as well assupport arm 310 is dimensioned such that the tread ofrear tire 122 makes contact withroller 152 as shown inFIG. 4 . - The
collar 322 can be moved alonglongitudinal portion 308 to accommodate various sizes of bicycles and thereby ensure that therear tire 122 makes contact with the top ofroller face 151 ofroller 152 as depicted inFIG. 4 .Collar 322 is locked in any conventional means ontolongitudinal portion 308. -
Motor assembly 106 includesmotor 156 which is connected to acommon shaft 154 toroller 152 having aroller face 151. - The reader will note that
rear tire 122 is allowed to move in thelateral direction 140 which will tend to happen during rocking ofbicycle 302 along the rockingarc 330. - Typically the
roller 152 has a width of approximately 5 to 9 inches and preferably approximately 6 to 7 inches which allows for lateral movement ofrear tire 122 along thelateral direction 140 of approximately 2 to 3 inches in reaction to any disturbance and particularly as the bicycle is rocked along rockingarc 330. This provides for simulation of real cycling conditions in which when the rider is standing on the pedals and is pedaling often thebicycle 302 will rock back and forth along rockingarc 330 during the pedaling motion andrear tire 122 will move laterally along thelateral direction 140 as a result. -
Motor 156 is rotationally attached to frame 150 atbearings 160 as depicted inFIG. 2 . - The rotation of
motor 156 is limited to pivoting action due to the restriction created by themotor base plate 164 impinging uponforce sensor 170 on theupper side 172 and aspring 176 on thelower side 178 ofmotor base plate 164. - It should be apparent to persons skilled in the arts that various modifications and adaptations of this structure describe above are possible without departure from the spirit of the invention the scope of which is defined in the appended claim.
Claims (16)
1. A bicycle trainer for use with a bicycle with its front tire removed from the fork dropout, the bicycle trainer comprises:
e) a stand which includes a flexible connecting arm connected to a motor assembly at a tire end of the flexible connecting arm;
f) a fork end of the flexible connecting arm dimensioned to attach to the front fork dropout of a bicycle;
g) the motor assembly includes a roller with a roller face, wherein the rear tire of the bicycle making contact with a roller face of the roller such that the roller is free to rotate in proportion to the rotation of rear tire and further the tire is free to move in a lateral direction across a portion of the face of the roller;
h) a motor is rotationally connected to the roller for selectively applying resistance and assistance to the rear tire rotation, for simulating real course conditions.
2. The bicycle trainer claimed in claim 1 further wherein the flexible connecting arm is dimensioned and selected to allow torsional flex of the flexible connecting arm such that the bicycle will rock back and forth along a rocking arc when the rider imparts torsional forces onto the stand.
3. The bicycle trainer claimed in claim 1 wherein the motor assembly which includes a frame for housing the roller and motor and also for rigidly connecting the motor assembly to the flexible connecting arm, the motor is rotationally mounted about its shaft with limited pivotal movement to the frame, such that the motor and roller rotate in proportional unison with each other.
4. The bicycle trainer claimed in claim 3 wherein the motor assembly further includes a means for measuring force.
5. The bicycle trainer claimed in claim 4 wherein the measuring means includes a force sensor for measuring the tangential force between the roller and the rear tire.
6. The bicycle trailer claimed in claim 4 , wherein the motor assembly further includes a base plate to which the motor is rigidly mounted, the base plate is free to pivot with the motor and includes a top side and bottom side.
7. The bicycle trainer claimed in claim 6 wherein the motor assembly includes a force sensor and spring, the force sensor in contact with one side of the base plate, and the spring contacting the other side of the plate such that the force sensor and spring restrict the pivoting deflection of the base plate and thereby measure the tangential force between the roller and rear tire.
8. The bicycle trainer claimed in claim 7 where the force sensor and spring are opposing each other mounted on opposite sides of the base plate, in order to maintain positive bias of force on the force sensor.
9. The bicycle trainer claimed in claim 7 wherein the force sensor is chosen from the group comprising piezo electric, and strain gauge and load cell and magneto elastic transducers.
10. The bicycle trainer claimed in claim 7 further including a controller which includes data sets for simulating real and imaginary road conditions.
11. The bicycle trainer claimed in claim 10 wherein the motor assembly in response to the controllers input imparts resistance and assistance to tire rotation and adjusts the assistance and resistance forces imparted at least 100 times per second.
12. The bicycle trainer claimed in claim 1 wherein the flexible connecting arm includes a longitudinal portion, a support arm and a fork support, wherein the longitudinal portion connected to the motor assembly at a tire end, and connected to the support arm at the other end, and the support arm also connected to a fork support.
13. The bicycle trainer claimed in claim 12 wherein the horizontal portion adapted to flex torsionally in response to torsional force imparted onto the stand.
14. The bicycle trainer claimed in claim 1 wherein the flexible connecting arm selected to allow a rocking arc of 10° each side of centre for a total arc of 20°.
15. The bicycle trainer claimed in claim 1 wherein the flexible connecting arm selected to allow a rocking arc of 5° each side of centre for a total arc of 10°.
16. The bicycle trainer claimed in claim 1 wherein the flexible connecting arm made of an aluminium alloy 6061 having a wall thickness of 10 mm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/983,737 US20160158620A1 (en) | 2013-09-03 | 2015-12-30 | Bicycle trainer |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201361872942P | 2013-09-03 | 2013-09-03 | |
US14/460,459 US20150065309A1 (en) | 2013-09-03 | 2014-08-15 | Bicycle trainer |
US14/983,737 US20160158620A1 (en) | 2013-09-03 | 2015-12-30 | Bicycle trainer |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US14/460,459 Continuation US20150065309A1 (en) | 2013-09-03 | 2014-08-15 | Bicycle trainer |
Publications (1)
Publication Number | Publication Date |
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US20160158620A1 true US20160158620A1 (en) | 2016-06-09 |
Family
ID=52584028
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US14/460,459 Abandoned US20150065309A1 (en) | 2013-09-03 | 2014-08-15 | Bicycle trainer |
US14/983,737 Abandoned US20160158620A1 (en) | 2013-09-03 | 2015-12-30 | Bicycle trainer |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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US14/460,459 Abandoned US20150065309A1 (en) | 2013-09-03 | 2014-08-15 | Bicycle trainer |
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US (2) | US20150065309A1 (en) |
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US20160236055A1 (en) * | 2013-09-27 | 2016-08-18 | Sbi Media Holding Sa | Bicycle trainer |
US20170216698A1 (en) * | 2016-01-28 | 2017-08-03 | Tacx Roerend En Onroerend Goed B.V. | Bicycle trainer |
CN107648806A (en) * | 2017-09-28 | 2018-02-02 | 浙江恒耀实业有限公司 | A kind of bicycle training airplane |
US10434394B2 (en) | 2017-08-17 | 2019-10-08 | Saris Cycling Group, Inc. | Movable support for exercise equipment |
US20200069997A1 (en) * | 2018-08-29 | 2020-03-05 | Bh Asia Ltd. | Swingable exercise bike |
EP3865186A1 (en) | 2020-02-17 | 2021-08-18 | Aruanã Energia S/A | Indoor bike stand with side movement degrees |
US11260280B2 (en) | 2016-08-05 | 2022-03-01 | Larry C. Papadopoulos | Bicycle trainer permitting steering and tilting motion |
US11400339B2 (en) | 2017-08-17 | 2022-08-02 | Saris Cycling Group, Inc. | Movably supported exercise device |
US11566608B2 (en) * | 2019-09-04 | 2023-01-31 | Planet Water, LLC | Aquacycle pump and method of use |
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US9804043B2 (en) * | 2015-06-13 | 2017-10-31 | Bruker Nano Inc. | Measurement of very low torque values |
NL2016180B1 (en) * | 2016-01-28 | 2017-08-01 | Tacx Roerend En Onroerend Goed B V | Bicycle trainer and method of its operation. |
KR101946614B1 (en) * | 2017-04-14 | 2019-02-11 | 김근우 | Front Fork Fixing Type Bicycle Treadmill |
US10493320B2 (en) | 2017-07-19 | 2019-12-03 | Anant Porwal | Exercise assembly |
CN111467748B (en) * | 2020-04-20 | 2021-05-25 | 山东交通学院 | Exercise bicycle system simulating real environment |
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US20150065309A1 (en) | 2015-03-05 |
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Owner name: VELO REALITY CORP., CANADA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BAUER, GARY;POUKHOV, KONSTANTINE;BAKUNIN, NIKOLAY;REEL/FRAME:037381/0654 Effective date: 20151216 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |