Air tightness detection equipment for piston rod of automobile shock absorber

Abstract

The utility model relates to the field of automobile shock absorber piston rod air tightness detection, in particular to automobile shock absorber piston rod air tightness detection equipment which comprises an air tightness detection equipment body, the air tightness detection equipment body is provided with a plurality of conveying pipes, and the other ends of the conveying pipes are provided with extension pipes. A fixing ring is fixedly installed on the outer wall of the other end of the conveying pipe, the side, away from the extension pipe, of the outer wall of the conveying pipe is sleeved with a limiting installation ring, and a piston rod body is arranged at the other end of the conveying pipe and located on the outer wall of the extension pipe. According to the utility model, the airtightness of the piston rod body is detected through the airtightness detection equipment body, the airtightness detection equipment body and the piston rod body are connected through the limiting mounting ring and the stability of the connection is ensured, and the sealing of the other end of the piston rod body is ensured through the sealing sleeve. And the piston rod body can be smoothly subjected to sealing detection.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness detection of automobile shock absorber piston rods, in particular to an automobile shock absorber piston rod air tightness detection device. Background Art

[0002] The piston rod in a car shock absorber is an important component that connects to the piston and transmits force. The working principle of the shock absorber is that when the frame and the axle are vibrated and produce relative movement, the piston in the shock absorber moves up and down. One end of the piston rod is usually connected to the body or frame of the car, and the other end is connected to the piston, which is located in the cylinder of the shock absorber.

[0003] Most existing piston rods need to be tested for air tightness before leaving the factory. When performing air tightness testing on the piston rod, most existing air tightness testing equipment inserts the delivery tube into the piston rod. However, simply inserting the delivery tube into the piston rod is prone to leakage and the connection is not stable. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an automobile shock absorber piston rod air tightness detection device.

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

[0006] A vehicle shock absorber piston rod air tightness detection device comprises an air tightness detection device body, wherein the air tightness detection device body is provided with a plurality of delivery pipes, an extension pipe is provided at the other end of the delivery pipe, and a fixing ring is fixedly installed on the outer wall of the other end of the delivery pipe, a limiting mounting ring is sleeved on the outer wall of the delivery pipe and located on the side away from the extension pipe, a piston rod body is provided at the other end of the delivery pipe and located on the outer wall of the extension pipe, and the piston rod body and the delivery pipe are connected by a limiting mounting ring, and a sealing sleeve is screwed on the other end of the piston rod body.

[0007] In addition, a preferred structure is that the outer wall of one end of the piston rod body is provided with a first threaded portion, and the outer wall of the other end of the piston rod body is provided with a second threaded portion.

[0008] In addition, a preferred structure is that a groove is provided in the middle of one side of the sealing sleeve, a second threaded cavity is adapted to be provided in the groove at the second threaded portion of the piston rod body, and the second threaded cavity is clearance-matched with the second threaded portion.

[0009] In addition, a preferred structure is that a sealing protrusion is installed in the middle of the groove of the sealing sleeve, and a second limiting groove is opened in the groove of the sealing sleeve at an equal distance outside the sealing protrusion, and a second sealing ring gasket is clamped in the second limiting groove.

[0010] In addition, a preferred structure is that a cavity is opened on one side of the limit mounting ring close to the extension tube, a first threaded cavity is adapted to be opened at the first threaded portion of the piston rod body in the cavity, and the first threaded cavity and the first threaded portion are clearance-matched.

[0011] In addition, a preferred structure is that a through hole is opened in the limit installation ring at the conveying pipe, and a clamping groove is opened in the limit installation ring cavity at the fixing ring.

[0012] In addition, the preferred structure is that an extended convex ring is installed on one side of the fixed ring close to the clamping groove and outside the clamping groove, a limited clamping groove is opened in the limited mounting ring cavity at the extended convex ring, and a third sealing ring gasket is clamped in the limited clamping groove.

[0013] The beneficial effects of the utility model are:

[0014] In the utility model, the airtightness detection device body is used to detect the sealing of the piston rod body, and the airtightness detection device body and the piston rod body are connected by a limit mounting ring to ensure the stability of the connection, and the other end of the piston rod body is sealed by a sealing sleeve to ensure that the sealing of the piston rod body can be smoothly detected. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of an automobile shock absorber piston rod air tightness detection device proposed by the utility model;

[0016] Figure 2 It is a structural schematic diagram of a partial cross section of the piston rod body, the delivery pipe, the limit installation ring, and the sealing sleeve proposed in the utility model;

[0017] Figure 3 for Figure 2 A partially enlarged structural schematic diagram;

[0018] Figure 4 This is a schematic structural diagram of a cross section of a position limiting mounting ring proposed in the utility model;

[0019] Figure 5 This is a schematic structural diagram of the cross section of the sealing sleeve proposed by the utility model.

[0020] In the figure: 1. Air tightness detection equipment body; 11. Delivery pipe; 12. Extension pipe; 13. Fixed ring; 2. Limit mounting ring; 21. First threaded cavity; 22. First sealing ring; 23. Limiting slot; 24. Card groove; 3. Piston rod body; 31. First threaded part; 32. Second threaded part; 4. Sealing sleeve; 41. Second threaded cavity; 42. Second sealing ring; 43. Sealing bump. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-5 A vehicle shock absorber piston rod air tightness detection device, comprising an air tightness detection device body 1, the air tightness detection device body 1 is provided with a plurality of delivery pipes 11, the other end of the delivery pipe 11 is provided with an extension pipe 12, and the outer wall of the other end of the delivery pipe 11 is fixedly installed with a fixing ring, the outer wall of the delivery pipe 11 is sleeved and located on the side away from the extension pipe 12 is sleeved with a limiting mounting ring 2, the other end of the delivery pipe 11 and the outer wall of the extension pipe 12 is provided with a piston rod body 3, and the piston rod body 3 and the delivery pipe 11 are connected by the limiting mounting ring 2, and the other end of the piston rod body 3 is screwed with a sealing sleeve 4. It is worth noting that the specific structure, connection method and working method of the air tightness detection device body 1, the delivery pipe 11 and the extension pipe 12 are all existing technologies, and do not belong to the main technical problems solved in this technical solution, so they are not elaborated in this utility model.

[0023] At the same time, the outer wall of one end of the piston rod body 3 is provided with a first threaded portion 31, and the outer wall of the other end of the piston rod body 3 is provided with a second threaded portion 32. It is worth noting that the specific structure of the piston rod body 3 and its working mode are both existing technologies and do not belong to the main technical problems solved in this technical solution. Therefore, they are not elaborated in the present utility model. A flow cavity is provided in the piston rod body 3, and the diameter of the sealing protrusion 43 is smaller than the diameter of the flow cavity of the piston rod body 3, and the diameter of the extension tube 12 is smaller than the diameter of the flow cavity of the piston rod body 3.

[0024] In addition, a groove is provided in the middle of one side of the sealing sleeve 4 , and a second thread cavity 41 is adapted to be provided in the groove at the second threaded portion 32 of the piston rod body 3 , and the second thread cavity 41 and the second threaded portion 32 are clearance-matched.

[0025] A sealing protrusion 43 is installed in the middle of the groove of the sealing sleeve 4, and a second limiting groove is opened in the groove of the sealing sleeve 4 at an equal distance outside the sealing protrusion 43, and a second sealing ring gasket 42 is clamped in the second limiting groove.

[0026] In addition, a cavity is formed on one side of the position limiting mounting ring 2 close to the extension tube 12 , and a first threaded cavity 21 is adapted to be formed at the first threaded portion 31 of the piston rod body 3 in the cavity, and the first threaded cavity 21 and the first threaded portion 31 are clearance-matched.

[0027] Furthermore, a through hole is provided in the position-limiting installation ring 2 at the delivery pipe 11 , and a clamping groove 24 is provided in the cavity of the position-limiting installation ring 2 at the fixing ring 13 .

[0028] Furthermore, an extended convex ring is installed on one side of the fixed ring 13 close to the clamping groove 24 and outside the clamping groove 24, and a limited clamping groove 23 is opened in the cavity of the limiting installation ring 2 at the extended convex ring, and a third sealing ring gasket is clamped in the limiting clamping groove 23.

[0029] In this embodiment, the sealing sleeve 4 is aligned with the piston rod body 3 and the sealing protrusion 43 is aligned with the flow cavity of the piston rod body 3, and then the sealing sleeve 4 is threadedly connected to the second threaded portion 32 of the piston rod body 3. At this time, the sealing protrusion 43 is clamped into the flow cavity of the piston rod body 3, and the sealing performance of the connection between the sealing sleeve 4 and the piston rod body 3 is enhanced by the second sealing ring gasket 42.

[0030] Then, the extension tube 12 is inserted into the flow cavity of the piston rod body 3, and the cavity of the limit installation ring 2 of the airtightness detection device body 1 is aligned with the first threaded portion 31 of the piston rod body 3, and the limit installation ring 2 is threadedly connected with the first threaded portion 31 of the piston rod body 3. At this time, the fixing ring 13 is clamped into the clamping groove 24, and the extension convex ring is clamped into the limit clamping groove 23. At the same time, the sealing performance of the connection between the limit installation ring 2 and the piston rod body 3 is enhanced through the first sealing ring gasket 21 and the third sealing ring gasket.

[0031] Then, the airtightness detection device body 1 is used to detect the sealing of the piston rod body 3, and the airtightness detection device body 1 and the piston rod body 3 are connected through the limit mounting ring 2 to ensure the stability of the connection, and the other end of the piston rod body 3 is sealed through the sealing sleeve 4 to ensure that the piston rod body 3 can be smoothly tested for sealing.

[0032] In the utility model, the airtightness detection device body 1 is used to detect the sealing performance of the piston rod body (3), and the airtightness detection device body 1 and the piston rod body (3) are connected by the limit installation ring 2 to ensure the stability of the connection, and the other end of the piston rod body 3 is sealed by the sealing sleeve 4 to ensure that the sealing performance of the piston rod body 3 can be smoothly detected.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automobile shock absorber piston rod air tightness testing device, comprising an air tightness testing device body (1), characterized in that: The air tightness detection device body (1) is provided with a plurality of delivery pipes (11), an extension pipe (12) is provided at the other end of the delivery pipe (11), and a fixing ring is fixedly installed on the outer wall of the other end of the delivery pipe (11), a limiting installation ring (2) is sleeved on the outer wall of the delivery pipe (11) and located on the side away from the extension pipe (12), a piston rod body (3) is provided at the other end of the delivery pipe (11) and located on the outer wall of the extension pipe (12), and the piston rod body (3) and the delivery pipe (11) are connected via the limiting installation ring (2), and a sealing sleeve (4) is screwed on the other end of the piston rod body (3).

2. The automobile shock absorber piston rod air tightness detection device according to claim 1, characterized in that: The outer wall of one end of the piston rod body (3) is provided with a first threaded portion (31), and the outer wall of the other end of the piston rod body (3) is provided with a second threaded portion (32).

3. The automobile shock absorber piston rod air tightness detection device according to claim 1, characterized in that: A groove is provided in the middle of one side of the sealing sleeve (4), and a second thread cavity (41) is adapted to be provided in the groove at the second threaded portion (32) of the piston rod body (3), and the second thread cavity (41) and the second threaded portion (32) are clearance-matched.

4. The automobile shock absorber piston rod air tightness detection device according to claim 3, characterized in that: A sealing protrusion (43) is installed in the middle of the groove of the sealing sleeve (4), and a second limiting groove is opened in the groove of the sealing sleeve (4) at an equal distance outside the sealing protrusion (43), and a second sealing ring gasket (42) is clamped in the second limiting groove.

5. The automobile shock absorber piston rod air tightness detection device according to claim 1, characterized in that: The limiting mounting ring (2) is provided with a cavity on one side close to the extension tube (12), and a first threaded cavity (21) is adapted to be provided in the cavity at the first threaded portion (31) of the piston rod body (3), and the first threaded cavity (21) and the first threaded portion (31) are clearance-matched.

6. The automobile shock absorber piston rod air tightness detection device according to claim 5, characterized in that: A through hole is provided in the position-limiting installation ring (2) at the delivery pipe (11), and a clamping groove (24) is provided in the cavity of the position-limiting installation ring (2) at the fixing ring (13).

7. The automobile shock absorber piston rod air tightness detection device according to claim 6, characterized in that: An extended convex ring is installed on one side of the fixed ring (13) close to the clamping groove (24) and outside the clamping groove (24); a limited clamping groove (23) is provided in the cavity of the limit mounting ring (2) at the extended convex ring; a third sealing ring gasket is clamped in the limited clamping groove (23).

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