Split type piston connecting rod structure and inflation assembly

Abstract

The utility model relates to a split type piston connecting rod structure and an inflation assembly, the piston connecting rod structure comprises a piston, the piston is in a cylinder shape with openings at two ends, a first piston ring is sleeved on the outer side of the piston, and a second piston ring is sleeved on the outer side of the piston; the piston is provided with a pin hole which penetrates through the side wall of the first piston ring, and the axis of the pin hole is perpendicular to the axis of the piston. One end of the connecting rod is located in the piston, and the connecting rod is rotationally installed on the pin hole through a piston pin; the one-way valve is arranged at one end, far away from the connecting rod, of the piston; the split type piston connecting rod structure is of a split type structure, lateral stress is small, the swing angle is small, the service life is long, assembling is easy, the piston and the connecting rod are convenient to disassemble and assemble due to the split type structure of the piston and the connecting rod, the piston and the connecting rod can be replaced in time when one part is damaged, and maintenance cost can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air suspension, in particular to a split piston connecting rod structure and an air charging component. Background Art

[0002] Passenger car air suspension was first matched to high-end models abroad. With the growth of domestic car companies and customer demand, various parts suppliers began to develop and design air suspension. Air suspension is mainly composed of air springs, shock absorbers, air supply units, ECUs, and air tanks. Among them, the air supply unit is mainly used to inflate / deflate the air springs. The piston connecting rod is the core component of the air supply unit, and its structural design affects the air supply unit's inflation efficiency and lifespan.

[0003] At present, the piston-connecting rod of the above-mentioned air supply unit is mainly an integrated structure of the piston and the connecting rod, and the main components are: piston, piston ring, one-way valve plate, connecting rod, bearing, bolt, the piston-connecting rod is driven by the driving source to reciprocate in the cylinder body, the gas passes through the one-way valve plate to realize the compression process, and then the compressed gas is discharged into the receiving body (i.e., the air spring). However, during the use of the above-mentioned piston-connecting rod, when one of the piston / connecting rod is damaged, the entire structure needs to be scrapped, resulting in high use costs. Utility Model Content

[0004] The utility model aims to provide a split piston-connecting rod structure and an inflatable component, which adopts a split structural design, so that the piston and the connecting rod are easy to disassemble and assemble, and the use cost can be reduced.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] On the one hand, a split piston connecting rod structure is provided, comprising:

[0007] A piston, wherein the piston is in the shape of a cylinder with openings at both ends, a first piston ring is sleeved on the outer side of the piston, and a pin hole is provided on the piston, the pin hole penetrating through the side wall of the first piston ring and the axis of the pin hole is perpendicular to the axis of the piston;

[0008] A connecting rod, one end of which is located in the piston, and the connecting rod is rotatably mounted on the pin hole through a piston pin;

[0009] A one-way valve is arranged at an end of the piston away from the connecting rod.

[0010] Preferably, a connecting rod hole is provided at one end of the connecting rod connected to the piston, a bearing is sleeved in the connecting rod hole, and the bearing is sleeved on the piston pin.

[0011] Preferably, the bearing comprises a roller bearing.

[0012] Preferably, the one-way valve comprises:

[0013] A valve seat, the valve seat is in a cylindrical shape with openings at both ends, the valve seat is fixedly connected to an end of the piston away from the connecting rod, and the valve seat is communicated with the interior of the piston;

[0014] A valve sheet connected to the valve seat, a disc structure is arranged at the center of the valve seat to block the mouth of the valve seat, and the valve sheet is located at one end of the valve seat away from the piston.

[0015] Preferably, the valve plate is a spiral, elastic plate-like structure.

[0016] Preferably, the valve plate is fixed to the valve seat by riveting.

[0017] Preferably, a second piston ring is further provided between the one-way valve and the end of the piston, and the second piston ring is clamped by the valve seat and the piston.

[0018] Preferably, the second piston ring is a bowl-shaped rubber ring, and the second piston ring is sleeved on the outer side of the valve seat.

[0019] Preferably, the portion of the valve seat that presses the second piston ring is also provided with an annular protrusion.

[0020] On the other hand, the utility model also provides an inflation assembly, which includes the above-mentioned split piston-connecting rod structure.

[0021] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0022] The split piston connecting rod structure disclosed in the utility model adopts a split structure, has small lateral force, small swing angle, long service life, simple assembly, and the piston and connecting rod are split in structure, the piston and the connecting rod are easy to disassemble and assemble, and one side can be replaced in time if damaged, which can effectively reduce the use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the split piston connecting rod structure in the utility model.

[0024] Figure 2 It is an exploded view of the split piston connecting rod structure in the utility model.

[0025] Figure 3 It is a full cross-sectional view of the split piston connecting rod structure in the utility model.

[0026] Figure 4 It is a full cross-sectional view of the one-way valve in the split piston connecting rod structure of the utility model.

[0027] Figure 5 It is a structural schematic diagram of the piston in the split piston connecting rod structure of the utility model.

[0028] Figure 6 It is a structural schematic diagram of the connecting rod assembly in the split piston connecting rod structure in the utility model.

[0029] Figure 7 The figure is a schematic diagram of the working of the split piston connecting rod structure in the inflation assembly of the utility model. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0031] Embodiment 1:

[0032] like Figure 1 and Figure 2 As shown, this embodiment provides a split piston-connecting rod structure, and the piston-connecting rod structure includes:

[0033] A piston 100, wherein the piston 100 is in a cylindrical shape with openings at both ends, a first piston ring 110 is sleeved on the outer side of the piston 100, and a pin hole 101 is provided on the piston 100, the pin hole 101 penetrating the side wall of the first piston ring 110 and the axis of the pin hole 101 is perpendicular to the axis of the piston 100;

[0034] A connecting rod 200, one end of which is located in the piston 100, and the connecting rod 200 is rotatably mounted on the pin hole 101 through a piston pin 400;

[0035] The one-way valve 300 is disposed at one end of the piston 100 away from the connecting rod 200 .

[0036] In this embodiment, if Figure 7 As shown, one end of the connecting rod 200 away from the piston 100 is installed on the crankshaft 610 located in the body 600, and the piston 100 is installed in the compression chamber 620 located in the body 600, and the piston 100 can slide in the compression chamber 620. When the crankshaft 610 rotates, the crankshaft 610 drives the piston 100 to slide in the compression chamber 620. At this time, the connecting rod 200 rotates around the piston pin 400, so that the lateral force on the connecting rod 200 is small, so that it is less deformed during the working process, thereby extending the service life of the connecting rod 200.

[0037] Furthermore, when the piston-connecting rod structure moves toward the direction of the crankshaft 610, negative pressure is generated in the compression chamber 620, and the gas entering the body 600 enters the one-way valve 300 through the piston 100. The gas pushes open the one-way valve 300 and enters the compression chamber 620. When the piston-connecting rod structure moves away from the crankshaft 610, the piston-connecting rod structure compresses the air, so that the gas in the compression chamber 620 enters the air spring.

[0038] Therefore, the piston-connecting rod structure in this embodiment adopts a split structural design, which has small lateral force, small swing angle, long service life, simple assembly, and a split structure of the piston and the connecting rod, which is easy to disassemble and assemble. When the piston / connecting rod is damaged, it can be replaced separately, which can effectively reduce the cost of use.

[0039] Embodiment 2:

[0040] The difference between this embodiment and embodiment 1 is that Figure 2 , such as 3 and Figure 5 As shown, the piston 100 is a circular cylindrical structure with a large opening at one end and a small opening at the other end. The pin hole 101 penetrates the piston 100 from the side. The piston 100 is an aluminum part, so that the overall weight of the piston 100 is light. An annular groove 102 is provided on the outer side of the piston 100. The first piston ring 110 is sleeved in the groove 102. The first piston ring 110 is a prior art, such as the first piston ring 110 is a rubber ring or a metal ring. The first piston ring 110 is used to increase the sealing performance between the piston connecting rod structure and the inner wall of the compression chamber 620.

[0041] like Figure 3 and Figure 6 As shown, the connecting rod 200 is an injection molded part, and a connecting rod hole 210 is provided at one end of the connecting rod 200 connected to the piston 100. A bearing 500 is sleeved in the connecting rod hole 210, and the bearing 500 is sleeved on the piston pin 400. The bearing 500 and the connecting rod hole 210 are fixedly connected by interference fit, and both ends of the piston pin 400 are fixedly connected to the pin hole 101 by interference fit; wherein, the bearing 500 includes a roller bearing.

[0042] Furthermore, the connecting rod 200 is a rod-shaped structure, and the end of the connecting rod 200 connected to the crankshaft 610 (i.e., the end away from the connecting rod hole 210) is the prior art. For example, an arc groove is provided at the end of the connecting rod 200 away from the connecting rod hole 210 for connecting to the crankshaft 610, and a retaining ring groove is also provided on the outer side of the arc groove. When the connecting rod hole 210 is connected to the crankshaft 610, the retaining ring is fixed in the retaining ring groove, and the retaining ring clamps the two connecting rods 200 on the crankshaft 610. The method of separately injecting the connecting rod 200 can effectively simplify the structure of the mold and reduce the cost of the mold, and the setting of the bearing 500 can effectively reduce the lateral force on the connecting rod 200.

[0043] Embodiment 3:

[0044] The difference between this embodiment and embodiment 1 or 2 is that the one-way valve 300 includes:

[0045] A valve seat 310, wherein the valve seat 310 is in a cylindrical shape with openings at both ends, and the valve seat 310 is fixedly connected to an end of the piston 100 away from the connecting rod 200, and the valve seat 310 is in communication with the interior of the piston 100;

[0046] A valve disc 330 connected to the valve seat 310, the valve disc 330 is a vortex-shaped, elastic structure, a disc structure is provided at the center of the valve seat 310 to block the mouth of the valve seat 310, and the valve disc 330 is located at the end of the valve seat 310 away from the piston 100; in this embodiment, the valve disc 330 is fixed to the valve seat by riveting, thereby reducing the number of assembly parts such as bolts and simplifying the assembly process;

[0047] Furthermore, the valve seat 310 and the piston 100 are fixedly connected by an interference fit, and the valve seat 310 is fixedly connected to the small opening of the piston 100. The inside of the one-way valve 300 is a trumpet-shaped through hole, and the valve plate 330 is riveted to the end of the valve seat 310. When the gas flows to the compression chamber 620, the gas lifts up the disc structure. When the piston connecting rod structure compresses the gas in the compression chamber 620, the disc structure is tightly attached to the end of the valve seat 310. The valve plate 330 is a vortex-shaped, elastic sheet structure, which can be made of metal materials such as 65Mn and stainless steel.

[0048] Further, such as Figure 2 and Figure 4 As shown, a second piston ring 320 is further provided between the one-way valve 300 and the end of the piston 100. The second piston ring 320 is clamped by the valve seat 310 and the piston 100 to increase the sealing performance of the piston connecting rod structure.

[0049] Specifically, the second piston ring 320 is a bowl-shaped rubber ring, and the second piston ring 320 is sleeved on the outer side of the valve seat 310, and the inner side of the second piston ring 320 is pressed against the end of the piston 100 by the valve seat 310;

[0050] Preferably, Figure 4 As shown, the portion of the valve seat 310 that presses the second piston ring 320 is also provided with an annular protrusion for improving the sealing performance between the valve seat 310 and the piston 100 .

[0051] Embodiment 4:

[0052] This embodiment provides an inflation component, which includes the split piston-connecting rod structure described in any one of Embodiments 1-3, and inflation is achieved through the reciprocating motion of the split piston-connecting rod structure.

[0053] It should be noted that, in the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A split piston connecting rod structure, characterized in that: include: A piston, wherein the piston is in the shape of a cylinder with openings at both ends, a first piston ring is sleeved on the outer side of the piston, and a pin hole is provided on the piston, the pin hole penetrating through the side wall of the first piston ring and the axis of the pin hole is perpendicular to the axis of the piston; A connecting rod, one end of which is located in the piston, and the connecting rod is rotatably mounted on the pin hole through a piston pin; A one-way valve is arranged at an end of the piston away from the connecting rod.

2. The split piston connecting rod structure according to claim 1, characterized in that: A connecting rod hole is arranged at one end of the connecting rod connected to the piston, a bearing is sleeved in the connecting rod hole, and the bearing is sleeved on the piston pin.

3. The split piston connecting rod structure according to claim 2, characterized in that: The bearing comprises a roller bearing.

4. The split piston connecting rod structure according to any one of claims 1 to 3, characterized in that: The one-way valve comprises: A valve seat, the valve seat is in a cylindrical shape with openings at both ends, the valve seat is fixedly connected to an end of the piston away from the connecting rod, and the valve seat is communicated with the interior of the piston; A valve sheet connected to the valve seat, a disc structure is arranged at the center of the valve seat to block the mouth of the valve seat, and the valve sheet is located at one end of the valve seat away from the piston.

5. The split piston connecting rod structure according to claim 4, characterized in that: The valve sheet is a spiral, elastic sheet structure.

6. The split piston connecting rod structure according to claim 4, characterized in that: The valve plate is fixed on the valve seat by riveting.

7. The split piston-connecting rod structure according to claim 4, characterized in that: A second piston ring is also arranged between the one-way valve and the end of the piston, and the second piston ring is clamped by the valve seat and the piston.

8. The split piston-connecting rod structure according to claim 7, characterized in that: The second piston ring is a bowl-shaped rubber ring, and the second piston ring is sleeved on the outer side of the valve seat.

9. The split piston-connecting rod structure according to claim 7, characterized in that: The portion of the valve seat that presses the second piston ring is also provided with an annular protrusion.

10. An inflatable component, characterized in that: It comprises the split piston-connecting rod structure as described in any one of claims 1 to 9.

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