CN220134492U - Air spring capable of emergency pressure maintaining - Google Patents
Air spring capable of emergency pressure maintaining Download PDFInfo
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- CN220134492U CN220134492U CN202321532559.XU CN202321532559U CN220134492U CN 220134492 U CN220134492 U CN 220134492U CN 202321532559 U CN202321532559 U CN 202321532559U CN 220134492 U CN220134492 U CN 220134492U
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- air spring
- step hole
- leather bag
- diameter piston
- emergency
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- 239000010985 leather Substances 0.000 claims abstract description 46
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 27
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 26
- 230000001681 protective effect Effects 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims description 21
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 239000006096 absorbing agent Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Fluid-Damping Devices (AREA)
Abstract
The utility model belongs to the technical field of vibration reduction, and relates to an air spring capable of emergency pressure maintaining, which comprises an upper cover, a leather bag, an aluminum protective cylinder and a pressure maintaining valve; the upper cover is arranged at the top of the leather bag and is connected with the leather bag; the aluminum protective cylinder is sleeved outside the leather bag; the pressure maintaining valve is arranged on the upper cover and communicated with the inside of the leather bag. The utility model provides the air spring capable of emergency pressure maintaining, which can effectively improve the reliability and the stability of the air spring.
Description
Technical Field
The utility model belongs to the technical field of vibration reduction, and relates to an air spring, in particular to an air spring capable of maintaining pressure in an emergency.
Background
The external air source of the existing air spring product is connected with the air spring by an air pipe, the structure has no pressure maintaining function, and if air source leakage or air pressure reduction is encountered, the air spring cannot guarantee effective jacking of the vehicle. Meanwhile, an aluminum protective cylinder of the air spring is fixed by adopting a built-in support ring inside the air spring, and is a key component of the air spring, and the aluminum protective cylinder mainly has the function of limiting the outer inflation diameter of the air spring and protecting the leather bag of the air spring in the running process of a vehicle. However, in long-term working process, the air spring has the risk that the inner support ring falls off, and at the moment, the air spring aluminum protective cylinder can fall off from the air spring, so that the air spring is invalid, the driving safety is seriously influenced, and the service life of the air spring is prolonged and the riding comfort is improved.
Disclosure of Invention
In order to solve the technical problems in the background art, the utility model provides the emergency pressure-maintaining air spring capable of effectively improving the reliability and the stability of the air spring.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
an air spring capable of emergency pressure maintaining, which is characterized in that: the air spring capable of emergency pressure maintaining comprises an upper cover, a leather bag, an aluminum casing and a pressure maintaining valve; the upper cover is arranged at the top of the leather bag and is connected with the leather bag; the aluminum protective cylinder is sleeved outside the leather bag; the pressure maintaining valve is arranged on the upper cover and communicated with the inside of the leather bag.
Preferably, the pressure maintaining valve adopted by the utility model comprises a valve body, a push rod and a spring; the inside of the valve body is provided with a step hole along the axial direction of the valve body and penetrating through the valve body; the ejector rod is arranged in the step hole along the axial direction of the valve body and can freely move in the step hole; a spring is arranged between the ejector rod and the step hole; the ejector rod is provided with an airflow channel along the axial direction of the ejector rod; the step hole is communicated with the inside of the leather bag through an air flow channel of the ejector rod.
Preferably, the ejector rod adopted by the utility model comprises a piston with a large outer diameter, a connecting rod and a piston with a small outer diameter; the large outer diameter piston is connected with the small outer diameter piston through a connecting rod; the large-outer diameter piston is arranged at the large aperture of the step hole and can freely move in the step hole along the axial direction of the valve body; the small-outer diameter piston is arranged at the small aperture of the step hole and can freely move in the step hole along the axial direction of the valve body; the small-outer-diameter piston can extend out or retract from the end part of the step hole; the airflow channel comprises a first airflow through hole, a second airflow channel and an airflow overflow hole; the first air flow hole is arranged on the large-outer-diameter piston and penetrates through the large-outer-diameter piston; the second airflow channel is arranged along the axial direction of the connecting rod; the air flow overflow hole is arranged on the side wall of the connecting rod; when the small-outer-diameter piston extends out of the end part of the step hole, the step hole is communicated with the inside of the leather bag through the first airflow through hole, the second airflow channel and the airflow overflow hole; the spring is sleeved outside the connecting rod, one end of the spring is abutted against the large-outer-diameter piston, and the other end of the spring is abutted against the step surface of the step hole.
Preferably, a fourth sealing ring is arranged between the large-outer-diameter piston and the stepped hole.
Preferably, a fifth sealing ring is arranged between the small-outer-diameter piston and the stepped hole.
Preferably, a third sealing ring is arranged between the pressure maintaining valve and the upper cover; and the third sealing ring is sleeved on the outer wall of the pressure maintaining valve.
Preferably, the air spring capable of emergency pressure maintaining adopted by the utility model further comprises anti-skid patterns arranged on the inner wall of the aluminum casing.
Preferably, the anti-skid pattern used in the present utility model is a bump, a knurl or a raised pattern.
Preferably, the air spring capable of emergency pressure maintaining adopted by the utility model further comprises an inner support ring arranged inside the leather bag; the positions of the inner support rings correspond to the positions of the anti-skid patterns.
The utility model has the advantages that:
the utility model provides an air spring capable of emergency pressure maintaining, which comprises an upper cover, a leather bag, an aluminum protective cylinder and a pressure maintaining valve; the upper cover is arranged at the top of the leather bag and is connected with the leather bag; the aluminum protective cylinder is sleeved outside the leather bag; the pressure maintaining valve is arranged on the upper cover and communicated with the inside of the leather bag. According to the utility model, the pressure maintaining valve is adopted at the inflation interface, so that the air pressure in the air bag is not reduced when no air exists outside the air bag, and the running of the vehicle is maintained; meanwhile, in order to improve the safety of the air spring, anti-slip lines such as knurling are added on the inner wall of the aluminum protective cylinder of the air spring and are assembled with the air spring leather bag, so that the friction force between the aluminum protective cylinder and the leather bag can be greatly improved, the inner support ring is prevented from falling off due to stress, the reliability of the air spring is improved, the use risk of a product is eliminated, the running safety is improved, and the customer satisfaction is improved.
Drawings
FIG. 1 is a schematic diagram of an air spring capable of emergency pressure maintaining;
FIG. 2 is a schematic diagram of the structure of the pressure maintaining valve in an inflated state;
FIG. 3 is a schematic view of the structure of the pressure maintaining valve in a sealed state;
FIG. 4 is a schematic view of an aluminum casing according to the present utility model;
wherein:
1-connecting a screw; 2-an upper cover; 3-an upper cover pressing ring; 4-leather bags; 5-aluminum casing; 6-an inner support ring; 7-a piston compression ring; 8-clamping hoop; 9-a piston; 10-a dust cover; 11-a first sealing ring; 12-check ring; 13-a second sealing ring; 14-a pressure maintaining valve; 141-a valve body; 142-ejector pins; 143-a spring; 144-a third sealing ring; 145-a fourth seal ring; 146-a fifth seal ring; 15-a nut; 16-topping glue; 17-buffer blocks; 18-shock absorber.
Detailed Description
Referring to fig. 1, the utility model provides an air spring capable of emergency pressure maintaining, which is the same as the prior art: the novel anti-leakage air spring comprises a connecting screw 1, an upper cover 2, an upper cover compression ring 3, a leather bag 4, an aluminum protective cylinder 5, an inner support ring 6, a piston compression ring 7, a clamp 8, a piston 9, a dust cover 10, a first sealing ring 11, a top cover 12, a second sealing ring 13, a nut 15, a top rubber 16, a buffer block 17 and a shock absorber 18, wherein the connecting screw 1 is fixedly connected with a vehicle body, the shock absorber 18 is fixedly connected with a suspension lower swing arm, the upper cover 2 is fixedly connected with the leather bag 4 through the upper cover compression ring 3, the piston 9 is fixedly connected with the leather bag 4 through the piston compression ring 7, the aluminum protective cylinder 5 and the leather bag 4 are fixedly connected together through the inner support ring 6, the top rubber 16 and the buffer block 17 are respectively installed in the upper cover 2, a piston rod of the shock absorber 18 penetrates through the upper cover 2 and the top rubber 16 and is fixedly connected together through the nut 15, and the air spring forms a sealing structure through the top cover 12 and the first sealing ring 11, so that gas in the working air spring can not leak. Unlike the prior art, the emergency pressure-maintaining air spring provided by the utility model further comprises a pressure-maintaining valve 14 which is arranged on the upper cover 2 and communicated with the interior of the leather bag 4, and the air spring is accessed through the pressure-maintaining valve 14.
Referring to fig. 2 and 3, the pressure maintaining valve 14 employed in the present utility model is of a metal structure including a valve body 141, a push rod 142 and a spring 143; the inside of the valve body 141 is provided with a stepped hole along the axial direction of the valve body 141 and penetrating the valve body 141; the ejector rod 142 is arranged in the step hole along the axial direction of the valve body 141 and can freely move in the step hole; a spring 143 is arranged between the ejector rod 142 and the step hole; the ejector rod 142 is provided with an air flow channel along the axial direction of the ejector rod 142; the stepped hole is communicated with the inside of the leather bag 4 through an air flow channel of the ejector rod 142. The ejector rod 142 comprises a large outer diameter piston, a connecting rod and a small outer diameter piston; the large outer diameter piston is connected with the small outer diameter piston through a connecting rod; the large outer diameter piston is arranged at the large aperture of the step hole and freely moves in the step hole along the axial direction of the valve body 141; the small outer diameter piston is arranged at the small aperture of the step hole and freely moves in the step hole along the axial direction of the valve body 141; the small outer diameter piston can extend out or retract from the end part of the step hole; the airflow channel comprises a first airflow through hole, a second airflow channel and an airflow overflow hole; the first air flow hole is arranged on the large-outer-diameter piston and penetrates through the large-outer-diameter piston; the second airflow channel is arranged along the axial direction of the connecting rod; the air flow overflow hole is arranged on the side wall of the connecting rod; when the small outer diameter piston extends out from the end part of the step hole, the step hole is communicated with the inside of the leather bag 4 through the first airflow through hole, the second airflow channel and the airflow overflow hole; the spring 143 is sleeved outside the connecting rod, one end of the spring 143 abuts against the large-outer-diameter piston, and the other end abuts against the step surface of the step hole.
In order to achieve a better sealing effect, a fourth sealing ring 145 is arranged between the piston with the large outer diameter and the stepped hole; a fifth sealing ring 146 is arranged between the small outer diameter piston and the step hole; a third sealing ring 144 is arranged between the pressure maintaining valve 14 and the upper cover 2; the third seal ring 144 is fitted over the outer wall of the pressure maintaining valve 14.
Referring to fig. 2, when air is introduced, the ejector rod 142 of the pressure maintaining valve 14 is subjected to pressure, and in an ejected state, air enters the air spring through an air flow passage inside the ejector rod 142. The improvement of the utility model is that the pressure maintaining valve 14 is under the pressure action when the air source has pressure, the ejector rod 142 is pushed out and is in a long-pass state; when the air source is not pressurized, the ejector rod 142 is acted by the spring 143, so that the end of the ejector rod and the fifth sealing ring 146 form a sealing effect, the compressed air in the air spring is ensured not to be communicated with the outside, and the pressure maintaining effect is achieved, as shown in fig. 3.
Referring to fig. 4, the air spring capable of emergency pressure maintaining provided by the utility model further comprises anti-skid patterns arranged on the inner wall of the aluminum protective cylinder 5 and used for improving the friction force between the aluminum protective cylinder and the leather bag. The anti-skid patterns are raised spots, knurls or wavy patterns. The air spring capable of emergency pressure maintaining also comprises an inner support ring 6 arranged inside the leather bag 4; the position of the inner support ring 6 corresponds to the position of the anti-skid pattern. The air spring aluminum protective cylinder 5, the air spring leather bag 4 and the air spring inner support ring 6 are pressed together and form an arc, so that the air spring leather bag is in surface-to-surface contact with the aluminum protective cylinder, the inner support ring 6 and the aluminum protective cylinder 5 form constraint, and the leather bag is pressed on the knurled pattern surface of the aluminum protective cylinder 5 by the inner support ring 6. The relative positions of the inner support ring 6, the leather bag 4 and the aluminum protective cylinder 5 are fixed due to the increase of friction force between the knurled pattern surface and the leather bag 4. The aluminum protective cylinder 5 is made of aluminum alloy material, the leather bag 4 is made of rubber material, and a nylon cord framework is arranged in the leather bag; the inner support ring 6 is a metallic material.
Claims (8)
1. An air spring capable of emergency pressure maintaining, which is characterized in that: the emergency pressure-maintaining air spring comprises an upper cover (2), a leather bag (4), an aluminum protective cylinder (5) and a pressure-maintaining valve (14); the upper cover (2) is arranged at the top of the leather bag (4) and is connected with the leather bag (4); the aluminum protective cylinder (5) is sleeved outside the leather bag (4); the pressure maintaining valve (14) is arranged on the upper cover (2) and communicated with the interior of the leather bag (4);
the pressure maintaining valve (14) comprises a valve body (141), a push rod (142) and a spring (143); the inside of the valve body (141) is provided with a step hole along the axial direction of the valve body (141) and penetrating through the valve body (141); the ejector rod (142) is arranged in the step hole along the axial direction of the valve body (141) and can freely move in the step hole; a spring (143) is arranged between the ejector rod (142) and the step hole; an air flow channel is arranged on the ejector rod (142) along the axial direction of the ejector rod (142); the step hole is communicated with the inside of the leather bag (4) through an air flow channel of the ejector rod (142).
2. The air spring capable of emergency pressure maintaining according to claim 1, wherein: the ejector rod (142) comprises a large-outer-diameter piston, a connecting rod and a small-outer-diameter piston; the large outer diameter piston is connected with the small outer diameter piston through a connecting rod; the large-outer diameter piston is arranged at the large aperture of the step hole and can freely move in the step hole along the axial direction of the valve body (141); the small outer diameter piston is arranged at the small aperture of the step hole and can freely move in the step hole along the axial direction of the valve body (141); the small-outer-diameter piston can extend out or retract from the end part of the step hole; the airflow channel comprises a first airflow through hole, a second airflow channel and an airflow overflow hole; the first air flow hole is arranged on the large-outer-diameter piston and penetrates through the large-outer-diameter piston; the second airflow channel is arranged along the axial direction of the connecting rod; the air flow overflow hole is arranged on the side wall of the connecting rod; when the small-outer-diameter piston extends out of the end part of the step hole, the step hole is communicated with the inside of the leather bag (4) through the first airflow through hole, the second airflow channel and the airflow overflow hole; the spring (143) is sleeved outside the connecting rod, one end of the spring (143) is abutted against the piston with the large outer diameter, and the other end of the spring is abutted against the step surface of the step hole.
3. The air spring capable of emergency pressure maintaining according to claim 2, wherein: a fourth sealing ring (145) is arranged between the large-outer-diameter piston and the stepped hole.
4. An emergency dwell air spring according to claim 3, wherein: a fifth sealing ring (146) is arranged between the small-outer-diameter piston and the step hole.
5. The emergency dwell air spring of claim 4, wherein: a third sealing ring (144) is arranged between the pressure maintaining valve (14) and the upper cover (2); the third sealing ring (144) is sleeved on the outer wall of the pressure-retaining valve (14).
6. The emergency dwell capable air spring of any one of claims 1-5, wherein: the air spring capable of emergency pressure maintaining further comprises anti-skid patterns arranged on the inner wall of the aluminum protective cylinder (5).
7. The emergency dwell air spring of claim 6, wherein: the anti-skid patterns are protruding points, knurls or wavy patterns.
8. The emergency dwell air spring of claim 7, wherein: the emergency pressure-maintaining air spring also comprises an inner supporting ring (6) arranged in the leather bag (4); the position of the inner support ring (6) corresponds to the position of the anti-skid pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321532559.XU CN220134492U (en) | 2023-06-15 | 2023-06-15 | Air spring capable of emergency pressure maintaining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321532559.XU CN220134492U (en) | 2023-06-15 | 2023-06-15 | Air spring capable of emergency pressure maintaining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220134492U true CN220134492U (en) | 2023-12-05 |
Family
ID=88947566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321532559.XU Active CN220134492U (en) | 2023-06-15 | 2023-06-15 | Air spring capable of emergency pressure maintaining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220134492U (en) |
-
2023
- 2023-06-15 CN CN202321532559.XU patent/CN220134492U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 442003 No. 19 Xicheng Avenue, industrial new area, Zhangwan District, Shiyan City, Hubei Province Patentee after: Dongshi Air Vibration Reduction Technology (Hubei) Co.,Ltd. Address before: 442003 No. 19 Xicheng Avenue, industrial new area, Zhangwan District, Shiyan City, Hubei Province Patentee before: Hubei Yitao Technology Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |