DE19811139B4 - Handle for a wrench - Google Patents

Abstract

Handle (5) for a wrench (1), wherein the wrench (1) comprises a narrow middle part (2) and one each at the two ends of the central part (2) arranged screwing while the handle (5)
Is mounted with play, longitudinally movable on the central part (2),
- Has two ends (8, 9), in each of which a recess (10, 11) is provided and
- At least one releasable locking comprises, such that
- It can be pushed with one of its ends (8, 9) over one of the screwdriving tools that this of the respective recess (10, 11) received and the handle (5) by the locking mechanism on the wrench (1) is held.

Description

The The invention relates to a handle for a wrench.

Wrenches are especially known as open-end or ring spanners. For example, Show the far spread spanner According to DIN 3110 or ISO, a relatively narrow central part on which on both sides depending on a relatively wide mouth opening as the actual screwing is formed. The mouth openings have different key widths, e.g. 14 and 15 millimeters. Other wrenches are considered closed or open ring spanners formed. About that there are wrenches, on one side a spanner and on the other one key ring include. All of the above wrenches can be flat, angled or cranked be educated. Furthermore are wrenches known for special Purposes are designed and shaped. The underlying of the invention Problem will be in the following for the sake of simplicity to the well-known mouth or ring spanners explained. However, the invention is not limited to this.

at the handling of the known wrench must be the hand to achieve the maximum torque, the free end, i. the free mouth, of the wrench include. The mouth openings are, however, gratifying, especially after prolonged and intensive use, so that danger of injury for the Hand threatens. The encompassing hand finds furthermore on the free No mouth optimal, i. ergonomic grip, as the metal mouth opening is relative edged and narrow and possibly also oiled. With it increased the risk of injury, because at a higher torque slipping the hand threatens.

From the DE 80 13 798 U1 is a clamp holder extension for a wrench known, the outside of the currently unused Schraubwerkzug form-fitting and firmly attached to the wrench and fastened.

This However, handle can only serve as a wrench extension and thus provides an additional Tool which is customized to the individual sizes of wrenches customized must become.

In principle, not even the objects of this idea differ from this idea US 4811637 and the DE 34 01 188 A1 ,

Of the Invention is therefore the object of a handle for a wrench of any kind, the handling ergonomically considerably improved.

These Task solves the invention by the features of claim 1.

By the invention is a handle for both ends of the wrench to Available. The handle can be adapted ergonomically to the hand, So that the Manual force can generate a maximum torque. By his handle-friendly Formation does not slip the hand even with increased torque, as she finds a better grip on the wrench.

Of the Handle can already applied in the manufacture of the wrench be, for example by molding. It can be the game between the wrench and the handle by appropriate design of the injection mold be assured.

Especially if the wrench with the handle is to be "retrofitted" is the separate preparation, i. Prefabrication, the handle necessary. Then the handle can be made in one piece, but consist of two halves, the over the Wrench, e.g. with the help of a film hinge, folded up and over connecting means be connected to each other. The handle can also be two prefabricated separate parts, which are also suitable Connecting means connected to the wrench become.

The The aforementioned compounds can be used for Example by means of clamps, magnets, Velcro connections, welding (by means of Ultrasonic) or gluing, wherein the redissolving, if desired also achievable by a suitable pressure-sensitive adhesive. Also positive engagement is possible.

The preferably injection-moldable material can made of a metal, e.g. an aluminum or magnesium alloy, or of a suitable plastic in the broadest sense, namely in hard- to soft-elastic texture. So can PP, PUR, PS, PA or even silicone are used, if necessary filled, e.g. with glass fibers. A particularly high-quality handle can through a combination of plastic with metal or even with textile be achieved.

One Handle made of plastic acts electrically and cold-insulating, thus increasing the safety and is more comfortable to use.

The ratchet between the wrench and the handle can be achieved in the simplest case by elevations or depressions in the area of the handle, which usually with existing corresponding depressions or elevations on the screwing (mouth opening form-elastic, ie clamping, interact.

One particularly high quality locking mechanism can consist of a releasable lever lock, that with appropriate, usually existing depressions or elevations on the screw cooperating tool.

additional Benefit the handle when bringing in the area of its ends provided with a marking, e.g. the type or size of the screwing tool color or numeric, e.g. Spanner size in millimeters or Inches, indicating.

Finally, can the handle be provided in the central area with a surface which the Provide users with the most diverse information, e.g. Indication of the manufacturer or distributor of the intended use for special tools, safety instructions or any Advertising messages.

One Another advantage of the handle made of plastic is to be seen in it that he in a packaging or housing the wrench for Transport this from rattling noises preserved.

In the drawing are embodiments of Invention, which are described in more detail below.

1 shows a wrench in mouth, on the right end of an inventive handle is applied.

2 indicates a wrench 1 , The handle is made in two parts and with a first Reibgesperre and shown in front of their connection.

3 shows a screw in a ring shape, on the right side of an inventive handle is applied.

4 shows the wrench 1 , The handle is made in two parts and with a second Reibgesperre and shown before their connection.

5 indicates a wrench 1 , wherein the handle is provided with a Formgesperre, in section.

6 shows one half of the handle 5 with the form locking.

7 shows the wrench 5 before the solution of the locking mechanism of the handle.

8th shows a modified form of the handle on a wrench.

9 shows a handle with the identification of the sizes of the wrench.

In the 1 and 2 is a wrench 1 according to DIN 3110, at its middle part 2 on each side a wider screwing tool in the form of a mouth opening 3 and 4 followed. On the narrower middle part 2 is a handle 5 stored longitudinally movable with game. The handle 5 is molded of plastic and consists of two parts 5a and 5b composed. The parts 5a and 5b are mirror images of the same design and can be connected to each other via connecting means. As connecting means here are molded, cone-shaped clamping knobs 6 provided in assigned recesses 7 engage and jam or clip. The way to the middle part 2 applied and stored handle 5 can now easily with one of its ends 8th or 9 over one of the mouth openings 3 . 4 , eg 9 above 4 to be pushed. These are two recesses 10 respectively. 11 provided, which the mouth openings 3 respectively. 4 completely, or at least predominantly, can take up.

In the 1 and 2 is the handle 5 over the mouth opening 4 pushed. When moving slides each a survey 12 respectively. 13 in the recesses 10 respectively. 11 over the mouth opening 3 respectively. 4 and locked behind the ground 14 respectively. 15 the mouth opening 3 respectively. 4 , As the handle 5 here is made of elastic plastic, the locking mechanism can out 13 and 15 by a certain axial pressure - in the longitudinal direction of the wrench 1 - on the handle 5 be picked up again, and the handle 5 glides back to the middle section 2 or can on the other mouth opening 3 be pushed to the left. Then the mouth opening 3 from the associated recess 10 of the handle 5 recorded and locked, according to the above description. The handle 5 is approximately oblong egg-shaped and optimally adapted to the comprehensive hand. The longitudinal sides can be flattened to an imprint (dashed lines indicated in 1 ) or the like to better absorb.

In 3 is the arrangement of the handle according to the invention on a ring spanner 16 shown according to DIN 3113. It is this only a slight adjustment of the corresponding openings or locking required, so that further details are not required.

In 4 is the arrangement of a handle 17 shown in which as part of a Reibgesperres some nubs 18 are arranged with the reason 15 the mouth opening 4 interact.

In the 5 to 7 is a locking form-fitting made of metal: two lever arms 19 are over an injected axle 20 tiltable. The release of the locking mechanism is achieved by squeezing the end of the handle 21 causes. This will be the lever ends 22 from the field of reason 14 the mouth opening 3 lifted out, whereby the locking mechanism is released and the handle 21 can be moved.

In the 8th is another advantageous shape of the handle 23 shown. Here is more space for imprints or other markings of any kind won. Such a form is therefore particularly suitable for advertising imprints and the like.

In the 9 is a handle 24 represented at the ends of clear markings for the respective, the handle associated mouth width or the like are attached. The space for advertising imprints and the like is indicated in thick dashed lines.

1

wrench

2

Middle part of 1

3

opening

4

opening

5

handle

5a

part of 5

5b

part of 5

6

clamping knobs

7

recesses

8th

End of 5

9

End of 5

10

recess

11

recess

12

survey

13

survey

14

Reason of 3

15

Reason of 4

16

key ring

17

handle

18

burl

19

lever arms

20

axis

21

handle

22

lever ends

23

handle

24

handle

Claims (14)

Handle ( 5 ) for a wrench ( 1 ), the wrench ( 1 ) a narrow central part ( 2 ) and one each at the two ends of the middle part ( 2 ) arranged while the handle ( 5 ) - with play, longitudinally movable on the middle part ( 2 ), - two ends ( 8th . 9 ), in which in each case a recess ( 10 . 11 ) is provided and - comprises at least one releasable locking mechanism, such that - he with one of its ends ( 8th . 9 ) can be pushed over one of the screwdriving tools that this of the respective recess ( 10 . 11 ) and the handle ( 5 ) through the locking mechanism on the wrench ( 1 ). Handle ( 5 ) according to claim 1, characterized in that it is made in one piece on the middle part ( 2 ) of the wrench ( 1 ) is sprayed on. Handle ( 5 ) according to claim 1, characterized in that it is in one piece and consists of two halves, which can be folded together and connected to one another via connecting means. Handle ( 5 ) according to claim 1, characterized in that it consists of two separate parts ( 5a . 5b ), which are interconnected via connecting means. Handle ( 5 ) according to claim 3 or 4, characterized in that the connecting means used is a clamping connection, screw connection, a magnet, an adhesive connection, in particular a pressure-sensitive adhesive connection or a welded connection, in particular an ultrasonic welding connection. Handle ( 5 ) according to one of claims 3 to 5, characterized in that it consists of an injection-moldable material. Handle ( 5 ) according to one of claims 1 to 6, characterized in that it consists of a metal, in particular of an aluminum or magnesium alloy. Handle ( 5 ) according to one of claims 1 to 6, characterized in that it consists of a plastic soft to hard-elastic type. Handle ( 5 ) according to claim 8, characterized in that it consists of PP, PUR, PS, PA or silicone. Handle ( 5 ) according to one of claims 1 or 3 to 5, characterized in that it is made of metal and plastic combined. Handle ( 5 ) according to one of claims 1 to 10, characterized in that the locking of elastic elevations ( 12 . 13 ) or depressions on the handle ( 5 ), which cooperate form-elastic with corresponding depressions or elevations on the screwing tool. Handle ( 5 ) according to one of claims 1 to 10, characterized in that the locking mechanism consists of a releasable lever mechanism on the handle ( 21 ), which cooperates with ent speaking depressions or elevations on the screwing. Handle ( 5 ) according to one of claims 1 to 12, characterized in that it is in the region of its ends ( 8th . 9 ) is provided with a marking, in particular in the form of an indication of the type and / or size of the associated screwing tool. Handle ( 5 ) according to one of claims 1 to 13, characterized in that it is provided in the central area with a surface for information, in particular for indicating the manufacturer or distributor or for displaying an advertising message.