Improved automobile shock absorber with air bag structure

Abstract

The improved automobile shock absorber with the air bag structure comprises a shock absorber body and an air bag, the air bag is arranged on the shock absorber body and connected with the shock absorber body in a matched mode, the air bag comprises an air bag body, an upper base and a lower base, and a buckle ring is arranged on the periphery of the upper base. A clamping piece matched with the air bag body is arranged in the buckle ring, a cover plate is arranged at the upper end of the upper base, a sealing ring is arranged between the cover plate and the clamping piece, the upper end of the air bag body wraps the upper base and is in sealed connection with the clamping piece through the buckle ring, a clamping piece is arranged on the periphery of the lower base, and a clamping block is arranged on the inner wall of the clamping piece. The lower base is provided with an annular groove matched with the clamping block, the air bag body is clamped between the clamping block and the annular groove, the lower end of the lower base is provided with an abutting ring matched with the air bag body, the lower end of the air bag body wraps the lower base and is in sealed connection with the abutting ring through the clamping piece, the air bag body is stably and reliably connected, and the air leakage condition is not prone to occurring.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbers, in particular to an improved automobile shock absorber with an air bag structure. Background Art

[0002] In recent years, with the continuous innovation of automobile industry technology and the intensification of market competition, consumers' demand for automobile driving experience and safety has been increasing. In this context, automobile shock absorbers, as key components that affect vehicle handling performance and ride comfort, are particularly important for improving their performance and quality. Automobile shock absorbers can not only effectively reduce vehicle body vibration and improve driving stability, but also protect other parts of the vehicle from impact and wear to a certain extent.

[0003] At present, common automobile shock absorbers on the market often have an airbag device connected to one end of the oil storage cylinder during installation. This airbag device is filled with high-pressure gas to enhance the damping effect of the shock absorber and provide a smoother driving experience. For example, the air spring used with automobile shock absorbers disclosed in the Chinese patent application (Announcement No.: CN201670077U) has an airbag worn on the shock absorber housing and the piston rod, the upper end of the airbag has an airbag upper seat mounted on the piston rod and the lower end has an airbag lower seat mounted on the shock absorber housing, the upper seat of the airbag has a positioning hole and a nozzle hole, and the lower seat of the airbag has a guide hole that matches the shock absorber housing. It can be used in conjunction with existing automobile shock absorbers to greatly improve its comfort, controllability, passability, safety and other driving performance. However, in actual use, due to the relatively simple connection between the airbag and other parts of the shock absorber, there is a lack of sufficient fixing and protection measures, which makes the airbag easy to loosen or even fall off when subjected to strong impact. Once the airbag leaks, the air pressure in the shock absorber will not be effectively maintained, resulting in a significant reduction in the shock absorption effect. This will not only affect driving comfort and stability, but may also threaten driving safety to a certain extent. Especially on bumpy roads or when driving at high speeds, poor performance of the shock absorber may cause excessive vibration of the car body, affecting the driver's control judgment and the passenger's riding experience, so it is necessary to improve it. Utility Model Content

[0004] The utility model aims to provide an improved automobile shock absorber with an airbag structure in view of the defects and shortcomings of the prior art. The structure is simple and reasonable, the operation is convenient, the connection of the airbag is stable and reliable, and it is not easy to leak.

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

[0006] The utility model discloses an improved automobile shock absorber with an airbag structure, comprising a shock absorber body and an airbag, the airbag being arranged on the shock absorber body and being connected in cooperation with the shock absorber body, the airbag comprising the airbag body, an upper base and a lower base, the periphery of the upper base being provided with a snap ring, the snap ring being provided with a clamping piece matching with the airbag body, the upper end of the upper base being provided with a cover plate, a sealing ring being provided between the cover plate and the clamping piece, the upper end of the airbag body being covered over the outside of the upper base and being sealedly connected through the snap ring and the clamping piece, the periphery of the lower base being provided with a clamping piece, the inner wall of the clamping piece being provided with a clamping block, the lower base being provided with an annular groove matching with the clamping block, the airbag body being clamped between the clamping block and the annular groove, the lower end of the lower base being provided with a supporting ring matching with the airbag body, the lower end of the airbag body being covered over the outside of the lower base and being sealedly connected through the clamping piece and the supporting ring.

[0007] Furthermore, the cover plate is provided with a one-way air nozzle for inflating the inner cavity of the airbag body, and the upper base is provided with an air hole communicating with the inner cavity of the airbag body.

[0008] Furthermore, the one-way air nozzle is also provided with a plug which seals with the one-way air nozzle.

[0009] Furthermore, a spring is provided between the cover plate and the upper base, and the spring has a tendency to move the cover plate downward.

[0010] Furthermore, a shock absorbing member is provided at the upper end of the lower base, and a plurality of semicircular protrusions are provided on the shock absorbing member.

[0011] Furthermore, the shock absorber body includes an inner cylinder, an outer cylinder, a connecting rod, a guide and a bottom valve assembly. The outer cylinder is sleeved on the outside of the inner cylinder, and an oil storage chamber is formed between the outer cylinder and the inner cylinder. The guide and the bottom valve assembly are arranged in the outer cylinder and are respectively located at the two ends of the inner cylinder. The connecting rod is movably arranged in the inner cylinder, and the upper end of the connecting rod passes through the guide and extends out of the cover plate. The lower end of the connecting rod is provided with a piston valve assembly, and the piston valve assembly divides the inner cavity of the inner cylinder into a rod cavity and a rodless cavity. The lower end of the outer cylinder is provided with a bottom cover.

[0012] Furthermore, the wall of the inner cylinder is provided with a flow channel connecting the rod chamber and the rodless chamber.

[0013] Furthermore, a fixing ring is provided at the lower end of the upper base, and the fixing ring is fixedly connected to the connecting rod.

[0014] Furthermore, a first sealing ring is provided between the upper base and the connecting rod.

[0015] Furthermore, a second sealing ring is provided between the lower base and the connecting rod.

[0016] The beneficial effects of the utility model are as follows: the utility model discloses an improved automobile shock absorber with an airbag structure, a snap ring is arranged on the periphery of the upper base, a clamping piece is arranged inside the snap ring, the clamping piece is closely fitted with the airbag body, and the sealing performance is improved. When the airbag body is subjected to external impact or pressure change, the connection of the airbag body is ensured to be stable and reliable, and air leakage is not easy to occur. A cover plate is arranged on the upper end of the upper base, and a sealing ring is arranged between the cover plate and the clamping piece, which further improves the sealing performance and avoids air leakage. The upper end of the airbag body is covered on the outside of the upper base and is sealed and connected by the snap ring and the clamping piece, so that the airbag body can be closely connected to the upper base. , it is not easy to shift, and it plays a role of sealing and fixing. A clamping piece is arranged on the periphery of the lower base, and a clamping block is arranged on the inner wall of the clamping piece. The lower base is provided with an annular groove matched with the clamping block. The airbag body is clamped between the clamping block and the annular groove, so that the airbag body can be firmly clamped between the clamping block and the annular groove, so that the airbag body can remain stable when under pressure, and at the same time enhances the sealing performance and is not easy to leak. A supporting ring matching with the airbag body is provided at the lower end of the lower base, and the lower end of the airbag body is covered outside the lower base and is sealed and connected by the clamping piece and the supporting ring. The supporting ring presses the airbag body against the lower surface of the lower base, which plays a role of sealing and fixing, and the airbag is not easy to leak. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0019] Figure 3 yes Figure 1 A schematic diagram of the enlarged structure at B in the middle;

[0020] Figure 4 yes Figure 1 Schematic diagram of the enlarged structure at C in the middle;

[0021] Figure 5 yes Figure 1 Schematic diagram of the enlarged structure at D in the middle;

[0022] Figure 6 yes Figure 1 Schematic diagram of the enlarged structure at E in the middle.

[0023] Figure 1-6In: 1. shock absorber body; 11. inner cylinder; 111. flow channel; 12. outer cylinder; 13. connecting rod; 14. bottom cover; 15. oil storage chamber; 16. rod chamber; 17. rodless chamber; 2. airbag body; 21. upper base; 211. snap ring; 212. clamping piece; 213. cover plate; 214. sealing ring; 215. air hole; 216. spring; 217. fixing ring; 22. lower base; 221. clamping piece; 2211. clamping block; 222. ring groove; 223. top ring; 224. shock absorber; 2241. semicircular protrusion; 3. one-way air nozzle; 31. plug; 32. air nozzle seat; 3 3. Air nozzle core; 34. Air nozzle cover; 35. Small spring; 36. Inflation port; 4. Guide; 41. Guide hole; 42. Oil seal; 5. Piston valve assembly; 51. Pressure plate; 511. First drainage hole; 52. Piston body; 521. First flow channel hole; 522. Second flow channel hole; 53. Pressure block; 54. Locking nut; 55. Upper valve plate; 551. Second drainage hole; 56. Lower valve plate; 6. Bottom valve assembly; 61. Mounting seat; 62. Valve cap; 621. Flow channel hole; 63. Valve seat; 631. Compensation hole; 64. Bottom valve spring; 65. Compensation valve plate; 7. First sealing ring; 8. Second sealing ring. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings.

[0025] like Figure 1-6The improved automobile shock absorber with an airbag structure shown in the figure comprises a shock absorber body 1 and an airbag, wherein the airbag is arranged on the shock absorber body 1 and is connected with the shock absorber body 1, wherein the airbag comprises an airbag body 2, an upper base 21 and a lower base 22, wherein a snap ring 211 is arranged on the periphery of the upper base 21, wherein a clamping piece 212 matching with the airbag body 2 is arranged inside the snap ring 211, wherein the clamping piece 212 is tightly fitted with the airbag body 2 to improve the sealing performance, and when the airbag body 2 is subjected to external impact or pressure changes, the connection of the airbag body 2 is ensured to be stable and reliable, and it is not easy to leak. A cover plate 213 is arranged on the upper end of the upper base 21, and a sealing ring 214 is arranged between the cover plate 213 and the clamping piece 212 to further improve the sealing performance and avoid leakage. The upper end of the airbag body 2 is covered on the outside of the upper base 21, and is sealed and connected by the snap ring 211 and the clamping piece 212, so that the airbag body 2 can be sealed. The airbag body 2 can be tightly connected to the upper base 21 and is not easily displaced, which plays a role of sealing and fixing. A clamping piece 221 is arranged on the periphery of the lower base 22, and a clamping block 2211 is arranged on the inner wall of the clamping piece 221. The lower base 22 is provided with an annular groove 222 that matches the clamping block 2211. The airbag body 2 is clamped between the clamping block 2211 and the annular groove 222, so that the airbag body 2 can be firmly clamped between the clamping block 2211 and the annular groove 222, so that the airbag body 2 can remain stable when under pressure, and at the same time, the sealing is enhanced and it is not easy to leak. The lower end of the lower base 22 is provided with a supporting ring 223 that matches the airbag body 2. The lower end of the airbag body 2 is covered on the outside of the lower base 22 and is sealed and connected by the clamping piece 221 and the supporting ring 223. Specifically, the supporting ring 223 presses the airbag body 2 against the lower surface of the lower base 22 to play a role of sealing and fixing.

[0026] Preferably, in this embodiment, a first sealing ring 7 is provided between the upper base 21 and the connecting rod 13. The first sealing ring 7 tightly fits the contact surface between the upper base 21 and the connecting rod 13, has good sealing performance, and can effectively prevent fluid leakage.

[0027] Preferably, in this embodiment, a second sealing ring 8 is provided between the lower base 22 and the connecting rod 13. The second sealing ring 8 fits tightly to the contact surface between the lower base 22 and the connecting rod 13, has good sealing performance, and can effectively prevent fluid leakage.

[0028] Preferably, in this embodiment, a fixing ring 217 is provided at the lower end of the upper base 21 , and the fixing ring 217 is fixedly connected to the connecting rod 13 , and the upper surface of the fixing ring 217 is fixedly connected to the lower surface of the upper base 21 , thereby providing fixed support for the upper base 21 .

[0029] Preferably, in this embodiment, a one-way air nozzle 3 for inflating the inner cavity of the airbag body 2 is disposed on the cover plate 213 , and an air hole 215 communicating with the inner cavity of the airbag body 2 is disposed on the upper base 21 .

[0030] The one-way air nozzle 3 comprises an air nozzle seat 32, an air nozzle core 33, an air nozzle cover 34 and a small spring 35. The air nozzle seat 32 is cooperatively connected with the air nozzle cover 34. The air nozzle cover 34 is provided with an inflation port 36. The air nozzle core 33 is movably arranged in the air nozzle seat 32. One end of the small spring 35 is against the air nozzle core 33, and the other end of the small spring 35 is against the air nozzle seat 32. The small spring 35 has a movement tendency to make the air nozzle core 33 seal the inflation port 36 to prevent gas leakage inside the airbag body 2. During inflation, the air pressure pushes the air nozzle core 33 to overcome the elastic force of the small spring 35 and open the inflation port 36 for inflation. Preferably, in this embodiment, the one-way air nozzle 3 is also provided with a plug 31 that is sealed and matched with the one-way air nozzle 3. The plug 31 can effectively prevent air leakage. When the airbag body 2 needs to be inflated, the plug 31 is removed for inflation.

[0031] Preferably, in this embodiment, a spring 216 is provided between the cover plate 213 and the upper base 21, the upper end of the spring 216 is fixedly connected to the cover plate 213, and the lower end of the spring 216 is fixedly connected to the upper base 21, and the spring 216 has a tendency to move the cover plate 213 downward, thereby increasing the pressure on the sealing ring 214 and improving the sealing effect.

[0032] Preferably, in this embodiment, a shock absorbing member 224 is provided at the upper end of the lower base 22, and a plurality of semicircular protrusions 2241 are provided on the shock absorbing member 224, which can effectively reduce the vibration amplitude and improve the stability of use. When the connecting rod 13 is impacted and vibrated, the semicircular protrusions 2241 can complete the multi-directional transmission of force and achieve a good shock absorbing effect. Preferably, the shock absorbing member 224 is made of rubber material, and the rubber has good toughness and elasticity, can withstand a large impact force, and can quickly restore to its original state, thereby playing a buffering role.

[0033] Preferably, in this embodiment, the shock absorber body 1 includes an inner cylinder 11, an outer cylinder 12, a connecting rod 13, a guide 4 and a bottom valve assembly 6. The outer cylinder 12 is sleeved on the outside of the inner cylinder 11, and an oil storage chamber 15 is formed between the outer cylinder 12 and the inner cylinder 11. The guide 4 and the bottom valve assembly 6 are arranged in the outer cylinder 12 and are respectively located at the two ends of the inner cylinder 11. The connecting rod 13 is movably arranged in the inner cylinder 11, and the upper end of the connecting rod 13 passes through the guide 4 and extends out of the cover plate 213. The lower end of the connecting rod 13 is provided with a piston valve assembly 5, and the piston valve assembly 5 divides the inner cavity of the inner cylinder 11 into a rod cavity 16 and a rodless cavity 17. The lower end of the outer cylinder 12 is provided with a bottom cover 14, and the lower base 22 is fixedly arranged on the upper end of the outer cylinder 12.

[0034] The guide 4 is also fixed with an oil seal 42 to prevent oil leakage. The guide 4 is provided with a guide hole 41 connecting the rod chamber 16 and the oil storage chamber 15. When the pressure in the rod chamber 16 increases, the oil in the rod chamber 16 flows into the oil storage chamber 15 through the guide hole 41, generating a viscous damping force to achieve a shock absorbing effect.

[0035] The piston valve assembly 5 includes a pressure plate 51, a piston body 52, a pressure block 53 and a locking nut 54. An upper valve plate 55 is arranged between the pressure plate 51 and the piston body 52, and a lower valve plate 56 is arranged between the piston body 52 and the pressure block 53. The piston body 52 is provided with a first flow channel hole 521 and a second flow channel hole 522. The pressure plate 51 is provided with a first drainage hole 511 matched with the first flow channel hole 521, and the upper valve plate 55 is provided with a second drainage hole 551 matched with the first flow channel hole 521. The upper valve plate 55 covers the second flow channel hole 522, and the lower valve plate 56 covers the first flow channel hole 521 but does not cover the second flow channel hole 522.

[0036] When the pressure in the rod chamber 16 increases, the oil in the rod chamber 16 passes through the first drainage hole 511, the second drainage hole 551, and the first flow channel hole 521, breaks through the lower valve plate 56 and enters the rodless chamber 17, generating a viscous damping force and playing a shock absorbing role. When the pressure in the rodless chamber 17 increases, the oil in the rodless chamber 17 passes through the second flow channel hole 522, breaks through the upper valve plate 55 and enters the rod chamber 16, generating a viscous damping force and playing a shock absorbing role.

[0037] The bottom valve assembly 6 includes a mounting seat 61, a valve bonnet 62 connected to the mounting seat 61, and a valve seat 63 arranged between the valve bonnet 62 and the mounting seat 61. A bottom valve spring 64 is arranged between the valve bonnet 62 and the valve seat 63. The valve bonnet 62 is clamped between the inner cylinder 11 and the mounting seat 61. The mounting seat 61 is set between the bottom cover 14 and the valve seat 63. A compensation valve plate 65 is arranged between the valve seat 63 and the mounting seat 61. The valve seat 63 is provided with a compensation hole 631 that cooperates with the compensation valve plate 65. The valve bonnet 62 is provided with a flow channel hole 621 that cooperates with the compensation hole 631. When the pressure in the oil storage chamber 15 increases, the compensation valve plate 65 is separated from the mounting seat 61 under the action of the oil pressure, and the oil passes through the gap between the mounting seat 61 and the compensation valve plate 65, and enters the rodless chamber 17 through the compensation hole 631 and the flow channel hole 621 for oil replenishment. This process generates viscous damping force, which plays a shock absorbing role.

[0038] Preferably, in this embodiment, the wall of the inner cylinder 11 is provided with a flow channel 111 connecting the rod chamber 16 and the rodless chamber 17, which can achieve a good shock-absorbing effect, effectively reduce the vibration caused by pressure fluctuations, and improve the stability of equipment operation.

[0039] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. An improved automobile shock absorber with an airbag structure, comprising a shock absorber body (1) and an airbag, wherein the airbag is arranged on the shock absorber body (1) and is connected to the shock absorber body (1), and the airbag comprises an airbag body (2), an upper base (21) and a lower base (22), and is characterized in that: The upper base (21) is provided with a snap ring (211) on its periphery, and a clamping piece (212) matching with the airbag body (2) is provided inside the snap ring (211). The upper end of the upper base (21) is provided with a cover plate (213), and a sealing ring (214) is provided between the cover plate (213) and the clamping piece (212). The upper end of the airbag body (2) is covered on the outside of the upper base (21) and is sealed and connected via the snap ring (211) and the clamping piece (212). The lower base (22) is provided with a snap ring on its periphery. (221), a clamping block (2211) is provided on the inner wall of the clamping member (221), a ring groove (222) matching with the clamping block (2211) is provided on the lower base (22), the airbag body (2) is clamped between the clamping block (2211) and the ring groove (222), a supporting ring (223) matching with the airbag body (2) is provided on the lower end of the lower base (22), the lower end of the airbag body (2) is covered outside the lower base (22), and is sealed and connected via the clamping member (221) and the supporting ring (223).

2. The improved automobile shock absorber with airbag structure according to claim 1, characterized in that: The cover plate (213) is provided with a one-way air nozzle (3) for inflating the inner cavity of the airbag body (2), and the upper base (21) is provided with an air hole (215) connected to the inner cavity of the airbag body (2).

3. The improved automobile shock absorber with airbag structure according to claim 2, characterized in that: The one-way air nozzle (3) is also provided with a plug (31) which is sealingly matched with the one-way air nozzle (3).

4. The improved automobile shock absorber with airbag structure according to claim 1, characterized in that: A spring (216) is provided between the cover plate (213) and the upper base (21), and the spring (216) has a tendency to cause the cover plate (213) to move downward.

5. The improved automobile shock absorber with airbag structure according to claim 1, characterized in that: A shock absorbing member (224) is provided at the upper end of the lower base (22), and a plurality of semicircular protrusions (2241) are provided on the shock absorbing member (224).

6. The improved automobile shock absorber with airbag structure according to claim 1, characterized in that: The shock absorber body (1) comprises an inner cylinder (11), an outer cylinder (12), a connecting rod (13), a guide (4) and a bottom valve assembly (6); the outer cylinder (12) is sleeved on the outside of the inner cylinder (11); an oil storage chamber (15) is formed between the outer cylinder (12) and the inner cylinder (11); the guide (4) and the bottom valve assembly (6) are arranged in the outer cylinder (12) and are respectively located at two ends of the inner cylinder (11); the connecting rod (13) is movably arranged in the inner cylinder (11); the upper end of the connecting rod (13) passes through the guide (4) and extends out of the cover plate (213); the lower end of the connecting rod (13) is provided with a piston valve assembly (5); the piston valve assembly (5) divides the inner chamber of the inner cylinder (11) into a rod chamber (16) and a rodless chamber (17); the lower end of the outer cylinder (12) is provided with a bottom cover (14).

7. The improved automobile shock absorber with airbag structure according to claim 6, characterized in that: The inner cylinder (11) has a wall provided with a flow channel (111) communicating with the rod chamber (16) and the rodless chamber (17).

8. The improved automobile shock absorber with airbag structure according to claim 6, characterized in that: A fixing ring (217) is provided at the lower end of the upper base (21), and the fixing ring (217) is fixedly connected to the connecting rod (13).

9. The improved automobile shock absorber with airbag structure according to claim 6, characterized in that: A first sealing ring (7) is provided between the upper base (21) and the connecting rod (13).

10. The improved automobile shock absorber with airbag structure according to claim 6, characterized in that: A second sealing ring (8) is provided between the lower base (22) and the connecting rod (13).

Images