WO2014121495A1

WO2014121495A1 - Piston body construction of air compressor

Info

Publication number: WO2014121495A1
Application number: PCT/CN2013/071530
Authority: WO
Inventors: 周文三
Original assignee: Chou Wen-San
Priority date: 2013-02-07
Filing date: 2013-02-07
Publication date: 2014-08-14
Also published as: DK2955382T3; EP2955382B1; HUE040224T2; JP2016505113A; PL2955382T3; CN104956084A; EP2955382A4; KR20150109343A; EP2955382A1; JP6067143B2

Abstract

A piston body construction of an air compressor, comprising a piston head (61). The piston head (61) is provided thereon with a cushioning air-accommodating indentation (60) that has an opening formed from the top, is inwardly indented, and has formed a bottom wall and a sidewall. This allows a piston body (6), while moving reciprocatively in a cylinder of the air compressor, to be kept in a safe pressure value range with respect to an object being inflated, and obviates the need for a pressure valve to be provided additionally.

Description

Piston body structure of air compressor

技术领域Technical field

The invention relates to a piston body structure of an air compressor, in particular to a piston body of an air compressor having a buffer gas which allows the compressed air outputted by the compressor in operation to be maintained within a safe pressure value range. Slot, this design allows the existing air compressor to eliminate the need for a pressure relief valve, reducing manufacturing costs.

背景技术Background technique

The air compressor is a device for inflating articles to be inflated, and is generally widely used for inflation applications of air cushions, tires, etc., because the air compressor is small in size and easy to be carried, and can also be used by a portable DC power supply. Or it can be connected to the cigarette lighter socket of the car to provide the power supply of the air compressor, which is quite simple and convenient to operate and use. In general, the existing air compressor, please refer to FIG. 14 to FIG. 16, the main basic components thereof include a cylinder 81, a piston body 82, a power motor 93, a large gear 94 as a transmission mechanism, a pinion 95, and the motor 93 is activated. Then, the large gear 94 is driven by the pinion 95 mounted on the shaft, and the piston body 82 is interlocked by the crank pin 96 in the large gear 94, and the reciprocating linear motion is performed in the inner chamber of the cylinder 81 or the cylinder 91. The high pressure air generated by the action can be output via the passage 97 (refer to FIG. 16) and connected to the item to be inflated for the purpose of inflation. Another passage 98 (refer to FIG. 16) may be directly or indirectly coupled to a pressure gauge (not shown) to facilitate visual inspection by the user of the pressure value of the inflation. Continuing to refer to Figs. 14 and 15, in the cylinder 81, the piston head 821 of the conventional piston body 82 is provided with a through venting passage 822, and as shown in Fig. 16, the piston body 92 is disposed in the cylinder 91, and the piston head 921 is solid. The state does not have a through venting passage, but whether the piston body 82 or the piston body 92 is installed in the cylinder 81 or the cylinder 91, the air compressor device is additionally provided with a pressure relief valve 84 and a safety valve (in the case of Another angle in FIG. 16 is not shown. If the pressure value of the generated high-pressure air exceeds the safety pressure value set by the item to be inflated, the pressure relief valve 84 is driven to bring the air chamber 85. The internal high-pressure air is released outside the machine and will not enter the object to be inflated to maintain the safety of the air compressor device and the gas to be inflated. However, due to the installation of such a pressure safety valve, the manufacturer increases the manufacturing cost and does not match. Economic benefits.

The inventors have in view of the lack of additional manufacturing cost in the air compressor device in view of the additional pressure relief valve, and the need to consider the protection of the pressure relief valve as an indispensable factor in the manufacture of the air compressor device. For this reason, it has been meticulously developed and designed, and finally developed an air compressor device that does not require the use of a pressure safety valve but has the protective effect of adding a pressure safety valve to the existing product.

发明内容Summary of the invention

The technical problem to be solved by the present invention is to provide a piston body structure of an air compressor, which can make the air compressor have a safety protection function without providing a pressure safety valve.

In order to solve the above technical problems, the technical solution of the present invention is:

A piston body construction of an air compressor, the piston body including a piston head that extends from a virtual horizontally extending XY horizontally extending surface of the piston head to a piston head body below the virtually extended XY horizontal plane Forming at least one buffering gas tank, the buffering gas tank is provided with an opening, and is recessed inwardly by the opening to form a bottom wall and a peripheral wall, the buffering gas tank reciprocating the piston body in the cylinder of the air compressor The air pressure continuously generated by the movement does not exceed the safe pressure value of the inflated article, so that the air compressor does not have to additionally provide a protective pressure safety valve.

The buffer air tank forms a flat top end wall at the tip end of the piston head at the periphery of the opening, and the bottom end wall extends downward to form a bottom end wall of the piston head between the top end wall and the bottom end wall of the piston head The outer peripheral wall is further provided with a recessed ring groove, the ring groove is not in communication with the buffer air tank; the bottom end wall of the piston head is connected to the first end of a piston rod, and the second end of the piston rod is simultaneously A pivot hole is provided; an airtight ring is disposed in the ring groove of the piston head.

The piston head has a plurality of the buffering gas tanks that are not connected to each other, and each of the buffering gas tanks has a different shape and a different depth.

The piston head is provided with an air inlet opening from the outside of the piston head to the bottom end wall in the buffer air tank, and the bottom end wall is further provided with a bump to fix a reed, and the reed is occluded when the stroke is over the stroke At the air port, the reed is opened by the outside air when the stroke is under the stroke, so that the outside air enters the inner chamber of the cylinder.

After adopting the above solution, since the piston head of the piston body of the present invention does not have a through-hole, but is provided with a buffering gas tank, the reciprocating linear motion of the piston body in the cylinder of the air compressor is continuously generated. The air pressure does not exceed the safe pressure value of the inflated article. Therefore, the air compressor does not need to additionally provide a protective pressure safety valve to keep the inflated article within a safe pressure range, which is not only safe to use, In the design that does not require additional pressure relief valves, it also has the economic benefit of reducing manufacturing costs.

附图说明DRAWINGS

Figure 1 is an exploded perspective view of the piston body of the present invention;

Figure 2 is a perspective cross-sectional view of the piston body of the present invention;

Figure 3 is a perspective view of the casing of the air compressor device of the present invention;

Figure 4 is a schematic plan view showing another angle of the casing of the present invention;

Figure 5 is a schematic view showing the suction stroke of the air compressor outside the retracting stroke of the piston body of the present invention;

Figure 6 is a schematic view showing the flow of compressed air during the forward stroke of the piston body of the present invention;

Figure 7 is a schematic view showing the piston body retreating stroke of the present invention, which takes air from the outside of the air compressor from the air inlet;

Figure 8 is a schematic view showing the flow of compressed air during the forward stroke of the piston body of the present invention;

Figure 9 is a cross-sectional view showing another angle of the present invention;

Figure 10 is a perspective view of the air compressor of the present invention;

Figure 11 is a plan view showing a buffer tank having different shapes and configurations on the piston head of the present invention;

Figure 12 is an exploded perspective view showing another structure of the piston body of the present invention;

Figure 13 is another perspective sectional view showing another structure of the piston body of the present invention;

Figure 14 is a schematic view showing the suction of the air outside the air compressor by the retreating stroke of the conventional piston body;

Figure 15 is a schematic view showing the flow of compressed air during the forward stroke of the conventional piston body;

Fig. 16 is a schematic view showing another angle of the conventional piston body in the forward stroke operation.

【Symbol Description】

1 unit 10 board 11 motor

12 pinion 13 large gear 15 eccentric pin

2 cylinder 21 cylinder inner chamber 22 top wall

23 channel 24 inner circumferential wall 26 air inlet

27 reed 3 gas storage seat 31 manifold

32 manifold 33 manifold 34 valve seat

35 gas storage chamber 36 spring 4 box

41 hose 42 pressure display table 45 switch

46 touch switch 461 ejector 47 opening and closing cover

5 vent valve group 51 cap type soft cover 52 bolt

6 piston body 60 buffer gas tank 601 opening

602 bottom wall 603 peripheral wall 61 piston head

611 top wall 612 bottom end wall 62 piston rod

621 first end 622 second end 63 pivot hole

64 ring groove 65 airtight ring 66 air inlet

67 bump 68 reed 81 cylinder

82 piston body 821 piston head 822 ventilation channel

83 deflation valve 84 safety valve 85 storage chamber

91 cylinder 92 piston body 921 piston head

93 motor 94 large gear 95 pinion

96 crank pin 97 passage 98 passage

901 bleed valve

具体实施方式detailed description

In order to further disclose the technical means of the present invention, the present invention will be described in detail by way of specific embodiments.

Please refer to FIG. 1 and FIG. 2, which is a piston body structure of an air compressor according to the present invention. The piston body 6 includes a piston head 61 and a piston rod 62, and an XY horizontally extending surface extending horizontally from a top flat surface of the piston head 61. The piston head 61 below the virtual extended XY horizontal plane is physically formed with at least one buffering gas tank 60 having an opening 601 and recessed inwardly from the opening 601 to form a bottom wall 602 and a peripheral wall 603. A top end wall 611 of a flat surface is formed at the top end of the piston head 61 at the periphery of the opening 601, and a bottom end wall 612 of the piston head 61 is formed to extend downward from the top end wall 611 at the top end wall 611 and the bottom end of the piston head 61. A recessed ring groove 64 is further formed on the outer peripheral wall between the walls 612, and the ring groove 64 is in a non-communicating state with the buffer air tank 60. The first end 621 of the piston rod 62 having a certain length is connected to the bottom end wall 612 of the piston head 61. The rear end of the piston rod 62, that is, the second end 622 is simultaneously provided with a pivot hole 63. An airtight ring 65, which functions like an O-ring, can be mounted within the ring groove 64 of the aforementioned piston head 61.

The actual use of the entire unit 1 of the air compressor of the present invention can be seen in Figs. 3 to 6 and Fig. 10, wherein the unit 1 has a state shown in Fig. 10, and the unit 1 has a plate 10 on the plate 10. A motor 11 is fixed and a cylinder 2 is fixed. The pinion 12 in the transmission mechanism is coupled to the large gear 13. The eccentric pin 15 on the large gear 13 is coupled to the pivot hole 63 at the rear end of the piston rod 62 of the piston body 6. The cylinder 2 has a top wall 22 at the top end of the cylinder inner chamber 21, and the top wall 22 has a passage 23 extending through the air reservoir 3 above the cylinder 2, and the manifold 3 is provided with a plurality of

manifolds

31, 32, 33 . A valve seat 34 and a spring 36 above the valve seat 34 are disposed at the passage 23 in the gas storage seat 3. The manifold 31 on the gas storage seat 3 can be connected to a hose 41. The manifold 32 is connected to a pressure display table 42. The manifold 33 is provided with a vent valve group 5, and a cap is provided at the innermost end of the vent valve group 5. Type soft cover 51. The entire unit 1 can be assembled in a box body, wherein the box body 4 is physically provided with a switch 45 as an action to activate or deactivate the air compressor, and the pressure display table 42 of the unit 1 can be exposed in the box. The outer surface of the body 1 and the ejector pin 461 on the inner side of the other touch switch 46 can pass through a bolt 52 and abut against the cap-type soft cover 51 of the vent valve group 5 on the air compressor, and the inflated object obviously has a higher pressure. In the state of the value, the user can easily press the touch switch 46 to touch the cap type soft cover 51 of the vent valve group 5, and the cap type soft cover 51 can be compressed and deformed and the excess pressure of the inflated object can be installed. The manifold 33 of this vent valve group 5 is vented. The hose 41 to which the manifold 31 is connected can be housed in the casing 4 and closed by an opening and closing cover 47 to achieve the aesthetics of the collection. The unit 1 is mounted in the casing 4, and its appearance state and internal related state can be simultaneously referred to FIGS. 3, 4 and 9.

The state in which the piston body 6 performs compressed air in the cylinder inner chamber 21 can be simultaneously referred to FIGS. 5 and 6. The piston body 6 of the air compressor can perform reciprocating linear motion in the cylinder 2, and when the piston body 6 is stroked, the air in the cylinder inner chamber 21 can be pushed into the air storage chamber 35 of the air reservoir 3 (as shown in FIG. 6). In addition, the hose 41 of the manifold 31 can be outputted to the object to be inflated; the downward stroke of the piston body 6 allows outside air to enter the cylinder interior 21 via the gap between the piston body 6 and the inner circumferential wall 24 of the cylinder 2 ( As shown in FIG. 5, the gas to be inflated can be sufficiently gasized in such a manner. Since the piston head 61 of the present invention is provided with a buffering gas tank 60, when the piston body 6 is stroked to the top dead center, although the top end wall 611 of the piston head 61 has abutted against the top wall 22 of the top end of the cylinder inner chamber 21, The presence of the buffer tank 60 allows the compressed air equal to the volume of the tank to be present in the cylinder chamber 21. This design not only allows the piston body 6 to increase the smoothness of the operation due to the reduced resistance, but also during the inflation process. The inflated material can be maintained within a safe pressure range and has safety in use. Therefore, the present invention can eliminate the need to additionally provide a pressure relief valve. Of course, the piston body 6 of the present invention can also be applied to a cylinder 2 (shown in Figure 7) provided with an air inlet 26 and a reed 27, when the piston body 6 is stroked, the reed 27 occludes the air inlet 26; When the piston body 6 is under the stroke, the outside air is pushed through the reed 27 and enters the cylinder inner chamber 21 from the air inlet 26. Referring to Figures 7 and 8, the piston body 6 applied to the cylinder 2 can still achieve the same benefit. .

As shown in Figs. 12 and 13, the piston body 6 of the present invention performs a reciprocating upper stroke and a lower stroke in the cylinder 2, and the piston head 61 is used to supply outside air into the cylinder chamber 21 during the down stroke. The piston head 61 can be provided with an air inlet 66 extending from the outside to the bottom end wall 612 in the buffer air tank 60. The bottom end wall 612 is further provided with a protrusion 67 for fixing a reed 68. The reed 68 will occlude the intake port 66 during the overshoot stroke, and the reed 68 will be opened by the outside air during the undershoot stroke to allow outside air to enter the cylinder interior chamber 21.

Referring to Figure 11, the piston head 61 of the present invention may have a plurality of individual buffering gas tanks P1, P2, P3, all of which are not in communication and may be of different depths.

According to the pre-existing theory, the piston body 6 of the present invention is provided with a buffering gas tank 60 on the piston head 61, so that the entire air compressor does not need to additionally add a pressure safety valve, which not only can reduce the manufacturing cost but also has economic benefits, so that the piston body 6 The invention is more smooth and safe in the operation process, and the invention is novel and progressive.

Claims

What is claimed is: 1. A piston body construction for an air compressor, characterized in that the piston body comprises a piston head which extends from a virtual horizontally extending XY horizontal plane of the highest top flat surface to a virtually extended XY horizontal plane. The lower piston head body is formed with at least one buffering gas tank, the buffering gas tank is provided with an opening, and the opening is recessed inwardly to form a bottom wall and a peripheral wall, and the buffering gas tank makes the piston body in the air compressor The air pressure continuously generated by the reciprocating linear motion in the cylinder does not exceed the safe pressure value of the inflated article, so that the air compressor does not have to additionally provide a protective pressure safety valve.

2. The piston body structure of an air compressor according to claim 1, wherein said buffer air tank forms a flat top end wall at a tip end of the piston head at the periphery of the opening thereof, and extends downward from the top end wall. Forming a bottom end wall of the piston head, and a recessed ring groove is further disposed on the outer peripheral wall between the top end wall and the bottom end wall of the piston head, the ring groove is not in communication with the buffer gas tank; The bottom end wall is connected to the first end of a piston rod, and the second end of the piston rod is simultaneously provided with a pivot hole; and an airtight ring is installed in the ring groove of the piston head.

3. The piston body structure of an air compressor according to claim 1, wherein said piston head has a plurality of said buffer air tanks that are not in communication, and each of the buffer air tanks has a different shape. Construction of different depths.

4. The piston body structure of an air compressor according to claim 1, wherein said piston head is provided with an air inlet opening from the outside of the piston head to a bottom end wall in the buffer air tank, the bottom end The wall is further provided with a bump to fix a reed. When the upper stroke is taken, the reed occludes the air inlet. When the stroke is down, the reed is opened by the outside air to allow outside air to enter the cylinder inner chamber.