Air spring top seat plugging mechanism capable of preventing seat opening leakage

Abstract

The utility model discloses an air spring footstock plugging mechanism capable of preventing seat opening leakage, which comprises a bottom plate, a fixed pressing plate is vertically arranged on the bottom plate, a sealing gas injection component matched with an upper footstock opening is arranged on the fixed pressing plate, a pressing block matched with the fixed pressing plate is arranged on one side of the fixed pressing plate, and a sealing gas injection component matched with the upper footstock opening is arranged on the other side of the fixed pressing plate. An upper top seat is pressed and sealed between the fixed pressing plate and the pressing block, the sealing gas injection assembly comprises a sliding block piece and a positioning pipe matched with the inner wall of a seat opening of the upper top seat, the sliding block piece comprises a sliding part and a sealing part arranged at one end of the sliding part, the sliding part is connected into the positioning pipe in a sliding mode, and the sealing part is arranged at the other end of the sliding part. The diameter of the sealing part is the same as the outer diameter of the positioning pipe, a first sealing ring arranged on the periphery of the sliding part in a sleeving mode is arranged between the sealing part and the positioning pipe, and an air inlet hole is formed in the sliding block piece in a penetrating mode. According to the utility model, the seat opening of the upper footstock can be effectively sealed when the air tightness of the upper footstock is detected, the plugging effect is good, the air leakage phenomenon is avoided, and the detection accuracy is improved.

Description

Technical Field

[0001] This utility model relates to the field of air spring detection technology, specifically to an air spring top seat sealing mechanism to prevent leakage at the seat opening. Background Technology

[0002] Air springs, as a high-end suspension system component that combines comfort and off-road performance, have been widely used in modern vehicles. They operate by filling a sealed container with compressed air, utilizing the compressibility of gas to achieve ideal non-linear elastic performance.

[0003] During the production of air springs, ensuring the airtightness of the upper mounting plate is crucial. Therefore, it is necessary to ensure the airtightness of the upper mounting plate (such as...). Figure 1 (As shown) an airtightness test is performed. This component is designed with a large opening (i.e., seat 17) for connecting the airbag, and a small connector 18 for connecting the inflation interface. When testing its airtightness, the usual practice is to seal the small connector 18 with a seal and fix the upper seat between two clamping plates. The large opening is tightly abutted against the surface of one of the clamping plates, which has an injection port to inject gas into the upper seat for testing. Although the large opening achieves a sealing effect by clamping against the clamping plates, in actual operation, the end face of the large opening may be contaminated with impurities or have scratches due to processing or placement factors, resulting in poor contact between the gas and the sealing ring, causing leakage, poor sealing effect, and affecting the accuracy of the test. Utility Model Content

[0004] The purpose of this utility model is to provide an air spring top seat sealing mechanism to prevent leakage at the seat opening. It can effectively seal the seat opening of the upper top seat during the airtightness test, with good sealing effect, avoiding air leakage and improving the accuracy of the test.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an air spring top seat sealing mechanism to prevent leakage from the seat opening, comprising a base plate, a pressure plate vertically provided on the base plate, a sealing and air-injection assembly provided on the pressure plate to cooperate with the seat opening of the upper top seat, a pressure block provided on one side of the pressure plate to cooperate with it, the upper top seat pressing and sealing between the pressure plate and the pressure block, the sealing and air-injection assembly comprising a slider and a positioning tube to cooperate with the inner wall of the seat opening of the upper top seat, the slider comprising a sliding part and a sealing part provided at one end of the sliding part, the sliding part being slidably connected inside the positioning tube, the diameter of the sealing part being the same as the outer diameter of the positioning tube, a first sealing ring sleeved on the outer periphery of the sliding part being provided between the sealing part and the positioning tube, and an air inlet hole penetrating through the slider.

[0006] The utility model discloses further improve scheme is, be equipped with the mounting port on the fixed pressure plate, one end of the positioning pipe is equipped with the limit block, the limit block is fixed on the fixed pressure plate through bolt.

[0007] The utility model discloses further improve scheme is, the limit block with the sliding part is coaxial and is equipped with the through -hole, the inner ring diameter of limit block is less than the diameter of the sliding part, and the limit block with the sliding part between is equipped with the reset spring.

[0008] The utility model discloses further improve scheme is, the sliding block piece still includes the limit part through the through -hole, and the limit part's outer periphery fixedly connected with the limit ring of diameter greater than the through -hole.

[0009] The utility model discloses further improve scheme is, the sliding part, the sealing part and the limit part are coaxial.

[0010] The utility model discloses further improve scheme is, be equipped with the ring groove on the fixed pressure plate, located the mounting port outer periphery, be equipped with the second sealing ring that can with the upper top seat seat mouth abut in the ring groove.

[0011] The utility model discloses further improve scheme is, be equipped with the supporting block with upper top seat cooperation on the fixed pressure plate, located the sealing gas injection subassembly below.

[0012] The utility model discloses further improve scheme is, one side of the fixed pressure plate is equipped with the pneumatic cylinder, and the pneumatic cylinder extension end is equipped with the dynamic pressure plate, and the dynamic pressure plate is equipped with the pressing block.

[0013] The utility model discloses further improve scheme is, the fixed pressure plate is equipped with two groups of sealing gas injection subassembly with horizontal interval.

[0014] The utility model discloses further improve scheme is, the fixed pressure plate is equipped with two groups of sealing gas injection subassembly with horizontal interval.

[0015] The utility model discloses further improve scheme is, the fixed pressure plate is equipped with two groups of sealing gas injection subassembly with horizontal interval.

[0016] The utility model discloses further improve scheme is, the fixed pressure plate is equipped with two groups of sealing gas injection subassembly with horizontal interval.

[0017] The utility model discloses a second sealing ring is set up on the fixed pressure plate, can realize secondary sealing, further improve the sealing effect. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic diagram of air spring upper top seat in prior art.

[0019] Figure 2 It is the structure schematic diagram of the utility model.

[0020] Figure 3 It is the structure sectional view local enlarged schematic diagram of the utility model.

[0021] Figure 4 It is the structure sectional view schematic diagram of the utility model's sliding block piece.

[0022] Figure 5 It is the position relation schematic diagram of the utility model's positioning pipe and upper top seat.

[0023] In the drawing, 1 - bottom plate, 2 - fixed pressure plate, 3 - pressure block, 4 - sliding block piece, 5 - positioning pipe, 6 - sliding part, 7 - sealing part, 8 - first sealing ring, 9 - air inlet hole, 10 - limit block, 11 - return spring, 12 - limit ring, 13 - second sealing ring, 14 - supporting block, 15 - air cylinder, 16 - movable pressure plate, 17 - seat mouth, 18 - small connector, 19 - limiting part. DETAILED DESCRIPTION

[0024] The utility model is further illustrated below in connection with the drawings and specific embodiment.

[0025] Example 1: in connection with Figures 1-5 It can be known that an air spring top seat plugging mechanism for preventing seat mouth leakage includes a bottom plate 1, a fixed pressure plate 2 vertically arranged on the bottom plate 1, a sealing gas injection assembly matched with the upper top seat seat mouth arranged on the fixed pressure plate 2, a pressure block 3 matched with the fixed pressure plate 2 arranged on one side of the fixed pressure plate 2, and the upper top seat is tightly sealed between the fixed pressure plate 2 and the pressure block 3. The sealing gas injection assembly includes a sliding block piece 4 and a positioning pipe 5 matched with the inner wall of the upper top seat seat mouth. The sliding block piece 4 includes a sliding part 6 and a sealing part 7 arranged at one end of the sliding part 6. The sliding part 6 is slidingly connected in the positioning pipe 5. The diameter of the sealing part 7 is the same as the outer diameter of the positioning pipe 5. A first sealing ring 8 is arranged on the outer periphery of the sliding part 6 between the sealing part 7 and the positioning pipe 5. An air inlet hole 9 is arranged through the sliding block piece 4. The air inlet hole 9 is communicated with the inner cavity of the upper top seat after being tightly pressed.

[0026] The fixed pressure plate 2 is provided with a mounting port, and one end of the positioning pipe 5 is provided with a limit block 10. The limit block 10 is fixed on the fixed pressure plate 2 by bolts. Preferably, the limit block 10 is a round plate.

[0027] The limiting block 10 is coaxially arranged with the sliding part 6 and is provided with a through hole. The inner diameter of the limiting block 10 is smaller than the diameter of the sliding part 6. The limiting block 10 and the sliding part 6 are provided with a reset spring 11. The two ends of the reset spring 11 abut against the opposite surfaces of the limiting block 10 and the sliding part 6 respectively. The reset spring 11 is provided with at least one. Preferably, the reset spring is provided with four, which are arranged along the central circumference of the limiting block 10. Preferably, the opposite surfaces of the limiting block 10 and the sliding part 6 are both provided with a guide groove for guiding the reset spring 11. The reset spring is partially located in the guide groove.

[0028] The sliding block 4 further comprises a limiting part 19 passing through the through hole. The outer periphery of the limiting part 19 is fixedly connected with a limiting ring 12 with a diameter larger than the through hole. Optionally, the limiting ring 12 is fixed on the limiting part 19 by bolts. Optionally, the outer periphery of the limiting part 19 is provided with external threads, and the inner periphery of the limiting ring 12 is provided with internal threads. The two are fixed by thread connection.

[0029] The sliding part 6, the sealing part 7 and the limiting part 19 are coaxially arranged and integrally arranged.

[0030] The fixed pressure plate 2 is provided with an annular groove on the outer periphery of the mounting hole. The annular groove is provided with a second sealing ring 13 capable of abutting against the seat hole of the upper top seat.

[0031] The fixed pressure plate 2 is provided with a supporting block 14 below the sealing gas injection assembly and matched with the upper top seat. Preferably, the supporting block 14 is provided with an arc surface matched with the outer wall surface of the upper top seat.

[0032] One side of the fixed pressure plate 2 is provided with a gas cylinder 15. The extending end of the gas cylinder 15 is provided with a movable pressure plate 16. The movable pressure plate 16 is provided with a pressing block 3. Preferably, the gas cylinder 15 is arranged on a gas cylinder mounting plate. The gas cylinder mounting plate is vertically arranged. At least one sliding rod is slidingly connected to the gas cylinder mounting plate along the extending direction of the gas cylinder 15. One end of the sliding rod is connected with the movable pressure plate 16. The upper end of some models of the upper top seat is provided with a protrusion. At this time, the pressing block 3 can be provided with an avoiding hole matched with the protrusion, so as to ensure the stability of clamping.

[0033] Two groups of sealing gas injection assemblies are horizontally and intervaliy arranged on the fixed pressure plate 2. Correspondingly, the movable pressure plate 16 is provided with two pressing blocks 3, which can seal two upper top seats at the same time for gas injection detection.

[0034] The working principle of the air spring top seat plugging mechanism for preventing seat mouth leakage provided by the utility model is as follows: in use, firstly, the small connector 18 with the top seat is closed by a sealing element (such as a sealing plug, a clamp sealing, a screw-in sealing cover), the seat mouth 17 of the top seat is aligned with the positioning pipe 5, and the positioning pipe 5 is placed on the supporting block 14, the outer wall of the positioning pipe 5 is in contact with the inner wall of the seat mouth 17, the air cylinder 15 is started to push the pressing block 3 to cooperate with the constant-pressure plate 2 to press the top seat to realize preliminary sealing, the inner cavity of the top seat is injected with air through the air inlet hole 9, after the cavity of the top seat is filled with air, the sliding block 4 is pushed in reverse to make the sealing part 7 cooperate with the end face of the positioning pipe 5 to extrude the first sealing ring 8, the first sealing ring 8 is deformed and tightly contacts with the inner wall of the seat mouth of the top seat to achieve the purpose of sealing.

[0035] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model, and any equivalent structure or equivalent process conversion made by using the contents of the utility model specification and drawings, or directly or indirectly applied to other related technical fields, is also included in the patent protection scope of the utility model.

Claims

1. An air spring top seat plugging mechanism for preventing leakage of a seat opening, comprising a bottom plate (1), a constant pressure plate (2) vertically arranged on the bottom plate (1), a sealing gas injection assembly arranged on the constant pressure plate (2) and matched with an upper top seat opening, and a pressing block (3) arranged on one side of the constant pressure plate (2) and matched with the constant pressure plate (2), wherein the upper top seat is tightly sealed between the constant pressure plate (2) and the pressing block (3). The sealing gas injection assembly comprises a sliding block (4) and a positioning tube (5) matched with the inner wall of the upper top seat mouth, the sliding block (4) comprises a sliding part (6) and a sealing part (7) arranged at one end of the sliding part (6), the sliding part (6) is slidably connected in the positioning tube (5), the diameter of the sealing part (7) is the same as the outer diameter of the positioning tube (5), a first sealing ring (8) is arranged between the sealing part (7) and the positioning tube (5) and sleeved on the outer periphery of the sliding part (6), and an air inlet hole (9) is arranged through the sliding block (4).

2. An air spring jounce bumper sealing mechanism that prevents leakage from the cup, according to claim 1, characterized in that: The positioning tube (5) is provided with a limiting block (10) at one end, and the limiting block (10) is fixed on the positioning plate (2) by bolts.

3. An air spring jounce bumper sealing mechanism that prevents leakage from the cup, according to claim 2, wherein: The limiting block (10) is coaxially arranged with the sliding part (6) and is provided with a through hole, the inner diameter of the limiting block (10) is smaller than the diameter of the sliding part (6), and a return spring (11) is arranged between the limiting block (10) and the sliding part (6).

4. The air spring jounce bumper blocking mechanism of claim 3, wherein: The sliding block (4) further comprises a limiting part (19) passing through the through hole, and the outer periphery of the limiting part (19) is fixedly connected with a limiting ring (12) with a diameter larger than the through hole.

5. An air spring jounce bumper sealing mechanism that prevents leakage from the cup, according to claim 4, wherein: The sliding part (6), the sealing part (7) and the limiting part (19) are coaxially arranged.

6. An air spring jounce bumper sealing mechanism that prevents leakage from the cup, as defined in claim 2, wherein: The positioning plate (2) is provided with an annular groove at the outer periphery of the mounting hole, and the annular groove is provided with a second sealing ring (13) capable of abutting against the upper top seat mouth.

7. An air spring jounce bumper sealing mechanism that prevents leakage from the cup, as defined in claim 1, wherein: The positioning plate (2) is provided with a supporting block (14) matched with the upper top seat below the sealing gas injection assembly.

8. An air spring jounce bumper sealing mechanism that prevents leakage from the cup, as defined in claim 1, wherein: The positioning plate (2) is provided with a gas cylinder (15) on one side, the gas cylinder (15) is provided with a movable pressure plate (16) on the extending end, and the movable pressure plate (16) is provided with the pressure block (3).

9. An air spring jounce bumper sealing mechanism that prevents leakage from the cup, according to claim 1, wherein: Two groups of sealing gas injection assemblies are horizontally and intervaliy arranged on the positioning plate (2).

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