CN213744653U

CN213744653U - Air spring

Info

Publication number: CN213744653U
Application number: CN202022011050.3U
Authority: CN
Inventors: 丁都都; 张晗; 何家兴; 李奕宝; 樊义祥
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-07-20
Anticipated expiration: 2030-09-14

Abstract

The utility model provides an air spring, includes mount pad, lower mount pad and air spring body, it locates on the frame to go up the mount pad, the mount pad is located on the rear suspension down, the air spring body is fixed in go up the mount pad with down between the mount pad, the mount pad passes through the positioning support assembly fixed down, the inside of air spring body is formed with gas chamber, gas chamber's top is equipped with spacing buffer block, spacing buffer block is protruding downwards stretch gas chamber's top and with there is the interval between gas chamber's the bottom. The utility model discloses a be equipped with spacing buffer block in the air spring, realize the function of buffering vertical impact and restriction suspension stroke.

Description

Air spring

Technical Field

The utility model relates to an automotive suspension technical field especially relates to an air spring.

Background

Rear suspensions of automobiles are various, and non-independent suspension systems are one of them, and the non-independent suspension systems often use air springs to realize height adjustment of the automobile body and ensure driving comfort. The air spring is an elastic element, an air bag is arranged in the air spring, the elastic action of bearing a frame and adjusting the height of a vehicle body is realized by utilizing compressed air in the air bag, but the air spring has a complex structure and higher manufacturing cost.

However, conventional air springs also suffer from a number of problems, such as: the internal limiting structure is lacked, and the longitudinal impact alleviation capability is poor; the external protection structure is often simpler and cannot effectively protect the complex air spring; the stiffness of an air spring provided with a piston and an air bag is difficult or even impossible to adjust.

Disclosure of Invention

In view of this, the utility model provides an air spring that has inside limit structure and can conveniently install.

The utility model provides an air spring, including last mount pad, lower mount pad and air spring body, the air spring body is fixed in go up the mount pad with down between the mount pad, the mount pad passes through the positioning support assembly down and fixes, the inside of air spring body is formed with gaseous cavity, gaseous cavity's top is equipped with spacing buffer block, protruding stretch down of spacing buffer block the top of gaseous cavity and with there is the interval between gaseous cavity's the bottom.

Further, the air spring body includes piston, gasbag and air cock, the piston is located the top of air spring body, the gasbag is located the bottom of air spring body, the piston pass through the shaft hole cooperation assemble in go up the mount pad below, the gasbag passes through the piston buckle and is fixed in the piston bottom, the inside intercommunication that is equipped with of piston the inner space of gasbag and external air flow channel, the air cock with screw-thread fit's mode install in the air flow channel.

Further, the air spring body further comprises an end cover, and the end cover is fixed to the bottom of the air bag through an end cover retaining ring and seals the air bag.

Furthermore, the limiting buffer block is installed at the bottom of the piston in an interference fit mode, the limiting buffer block protrudes out of the bottom of the piston and has a distance with the end covers, and a crumpling through hole is formed in the middle of the limiting buffer block in the axial direction.

Furthermore, the air spring body still includes the dust cover, the dust cover is located on the air spring body, the upper end of dust cover with the piston joint is sealed, the lower extreme of dust cover with the gasbag joint is sealed.

Further, air spring still includes first protection casing and second protection casing, first protection casing cover is located this external of air spring, the second protection casing is located with interference fit's mode cover first protection casing is outer and follow circumference parcel air spring body with first protection casing, the second protection casing with the mount pad assembles with interference fit's mode down.

Further, the lower mounting seat further comprises a first base and a second base, the first base is connected with the end cover through a stud, the second base is fixed on the rear frame, and the first base is arranged above the second base and assembled and fixed with the second base.

Further, the positioning support includes a first positioning portion, a second positioning portion, and a connecting portion connected between the first positioning portion and the second positioning portion, the first positioning portion is located above the second positioning portion and connected to the second positioning portion through the connecting portion, the first positioning portion is assembled with the first base, and the second positioning portion is assembled with the second base.

Furthermore, the lower mounting seat further comprises a positioning groove, the first base is provided with a first positioning groove for accommodating the first positioning portion, the first positioning groove is arranged at the bottom of the first base, the second base is provided with a second positioning groove for accommodating the second positioning portion, and the second positioning groove is concavely arranged in the middle of the second base.

Furthermore, the positioning support further comprises an inverted triangle buckle, the inverted triangle buckle is respectively arranged on the inner edge of the first positioning portion and the lower edge of the second positioning portion, and the first base and the second base are respectively clamped and fixed with the positioning support through the inverted triangle buckle.

The utility model discloses an be equipped with spacing buffer block in the air spring, realize the function of buffering vertical impact and restriction suspension stroke, just the utility model discloses an air spring passes through the positioning support assembly fixed, simple to operate.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic view of an air spring provided by the present invention.

Fig. 2 is a schematic view of the lower mounting base provided by the present invention.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.

The utility model discloses an air spring is located the rear suspension.

Please refer to fig. 1, the utility model discloses an air spring includes mount pad 1, mount pad 3 down, air spring body 2, it locates on the frame to go up mount pad 1, mount pad 3 locates on the rear suspension down, air spring body 2 is fixed in between mount pad 1 and the mount pad 3 down, mount pad 3 is fixed through the assembly of location support 33 down, the inside of air spring body 2 is formed with gas chamber, gas chamber's top is equipped with spacing buffer block 23, spacing buffer block 23 downwardly protruding stretch out gas chamber's top and with the bottom of gas chamber between have the interval.

Further, the air spring body 2 comprises a piston 21, an air bag 22 and an air nozzle 24, the piston 21 is located at the top of the air spring body 2, the air bag 22 is located at the bottom of the air spring body 2, the piston 21 is assembled below the upper mounting seat 1 through a shaft hole in a matching mode, the air bag 22 is fixed at the bottom of the piston 21 through a piston retaining ring 25, an air flow channel which is communicated with the inner space of the air bag 22 and the outside is arranged inside the piston 21, and the air nozzle 24 is installed in the air flow channel in a threaded matching mode. In this embodiment, the piston 21 is irregular in shape, the upper side of the piston 21 is higher and the other side is lower, and the air nozzle 24 and the air flow passage are disposed on the higher side, and for the air spring, the rigidity of the air spring can be adjusted to some extent by adjusting the shape of the piston 21.

Further, the air spring body 2 further comprises an end cover 26, and the end cover 26 is fixed at the bottom of the air bag 22 through an end cover retaining ring 27 and seals the air bag 22. In the present embodiment, the end cap 26 is provided with a screw hole at the center for screwing, and the end cap 26 is wrapped and sealed by the bottom of the airbag 22 along the circumferential direction.

Further, air spring body 2 still includes spacing buffer block 23, spacing buffer block 23 is installed in piston 21 bottom with interference fit's mode, spacing buffer block 23 is protruding stretch out piston 21 bottom and with the end cover 26 between there is the interval, spacing buffer block 23 middle part is equipped with the through-hole that bursts to contract along the axial, spacing buffer block 23 can offset with end cover 26 top when air spring compresses, reach the effect of spacing air spring on the direction of height, the through-hole that bursts to contract at spacing buffer block 23 middle part has the effect that makes spacing buffer block 23 self burst to contract when receiving the impact, avoid damaging other parts when reaching spacing effect, avoid self following the piston bottom to deviate from and the extra risk that produces simultaneously.

Further, the air spring body 2 further comprises a dust cover 28, the dust cover 28 is sleeved on the air spring body 2, the upper end of the dust cover 28 is clamped and sealed with the piston 21, and the lower end of the dust cover 28 is clamped and sealed with the airbag 22. In the present embodiment, the dust cover 28 is provided above the airbag 22 and circumferentially wraps the upper half of the piston 21.

Further, the air spring further comprises a first protective cover 41 and a second protective cover 42, the first protective cover 41 is sleeved outside the air spring body 2, the second protective cover 42 is sleeved outside the first protective cover 41 in an interference fit manner and circumferentially wraps the air spring body 2 and the first protective cover 41, and the second protective cover 42 is assembled with the lower mounting base 3 in an interference fit manner. In this embodiment, the first dust cover 28 is an aluminum protective cover and the second dust cover 28 is a rubber boot.

Further, the air spring further comprises a first clamping hoop 51 and a second clamping hoop 52, wherein the first clamping hoop 51 clamps the lower end of the dust cover 28 and the first protection cover 41, and the second clamping hoop 52 clamps the first protection cover 41 and the air spring body 2.

Further, referring to fig. 2, the lower mounting base 3 further includes a first base 31 and a second base 32, the first base 31 is connected to the end cover 26 through a stud, the second base 32 is fixed on the rear frame, and the first base 31 is disposed above the second base 32 and assembled and fixed with the second base 32. In this embodiment, a screw hole for screwing with the end cap 26 is formed in the middle of the first base 31, a protruding edge abutting against the bottom of the airbag 22 is further formed on the side of the first base 31 along the circumferential direction, and the end cap 26 is accommodated in the center of a concave recess surrounded by the protruding edge.

Further, the positioning support 33 includes a first positioning portion 331, a second positioning portion 332, and a connecting portion 334 connected between the first positioning portion 331 and the second positioning portion 332, and the first positioning portion 331 is located above the second positioning portion 332 and connected with the second positioning portion 332 through the connecting portion 334.

Furthermore, the positioning support 33 further includes an inverted triangle buckle 333, the inverted triangle buckle 333 is respectively disposed at the inner edge of the first positioning portion 331 and the lower edge of the second positioning portion 332, and the first base 31 and the second base 32 are respectively fastened to the positioning support 33 through the inverted triangle buckle 333.

Further, the lower mounting base 3 further includes a positioning groove 34, the first base 31 is provided with a first positioning groove 341 for accommodating the first positioning portion 331, the first positioning groove 341 is disposed at the bottom of the first base 31, the second base 32 is provided with a second positioning groove 342 for accommodating the second positioning portion 332, and the second positioning groove 342 is concavely disposed at the middle of the second base 32. In this embodiment, second constant head tank 342 is a "U" type recess, the utility model discloses an after the air spring installation finishes, follow the automobile body direction of height in the second constant head tank 342 from up holding second location portion 332 and inverted triangle buckle 333 in proper order down, the bolt hole on the bottom of first base 31 and the first base 31, when mount pad 3 under the assembly, only need follow the direction of height to arrange first base 31 in on location support 33 and aim at second constant head tank 342 between two parties, vertical extrusion can be packed into first base 31 in the location support 33, arrange location support 33 in on the second base 32 and aim at second constant head tank 342 afterwards, vertical extrusion can be packed into in the second base 32 with location support 33.

To sum up, the utility model discloses an air spring passes through the shaft hole cooperation and falls the triangle cooperation respectively with last mount pad and mount pad assembly down, through the last lower extreme of buckle air bag, used part and assembly process are simple and easy reliable, the utility model discloses an air spring can change rigidity through the shape that changes or replace the piston, rigidity plasticity is strong, the utility model discloses a be equipped with spacing buffer block structure in the air spring, realize the function of buffering longitudinal impact and restriction suspension stroke, in addition, the utility model discloses an outer parcel of air spring body has dust cover, first protection casing and second protection casing, and connection structure is reasonable and firm, and furthest protection gasbag does not receive destruction such as external grit, has improved factor of safety.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person can make modifications or changes equivalent to the above embodiments without departing from the scope of the present invention, but all the modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are within the scope of the present invention.

Claims

1. An air spring characterized by: it includes mount pad (1), mount pad (3) and air spring body (2) down, air spring body (2) are fixed in go up mount pad (1) with down between mount pad (3), mount pad (3) are fixed through positioning support (33) assembly down, the inside of air spring body (2) is formed with gas chamber, gas chamber's top is equipped with spacing buffer block (23), protruding stretch downwards spacing buffer block (23) gas chamber's top and with there is the interval between gas chamber's the bottom.

2. An air spring according to claim 1, wherein: air spring body (2) include piston (21), gasbag (22) and air cock (24), piston (21) are located the top of air spring body (2), gasbag (22) are located the bottom of air spring body (2), piston (21) through the shaft hole cooperation assemble in go up mount pad (1) below, gasbag (22) are fixed in through piston buckle (25) piston (21) bottom, piston (21) inside is equipped with the intercommunication the inner space of gasbag (22) and external air flow channel, air cock (24) with screw-thread fit's mode install in the air flow channel.

3. An air spring according to claim 2, wherein: the air spring body (2) further comprises an end cover (26), and the end cover (26) is fixed to the bottom of the air bag (22) through an end cover retaining ring (27) and seals the air bag (22).

4. An air spring according to claim 3, wherein: spacing buffer block (23) with interference fit's mode install in piston (21) bottom, spacing buffer block (23) protruding stretch out piston (21) bottom and with there is the interval between end cover (26), spacing buffer block (23) middle part is equipped with the through-hole that contracts of bursting along the axial.

5. An air spring according to claim 2, wherein: air spring body (2) still include dust cover (28), dust cover (28) cover is located on air spring body (2), the upper end of dust cover (28) with piston (21) joint is sealed, the lower extreme of dust cover (28) with gasbag (22) joint is sealed.

6. An air spring according to any one of claims 1-5, wherein: air spring still includes first protection casing (41) and second protection casing (42), first protection casing (41) cover is located outside air spring body (2), second protection casing (42) are located with interference fit's mode first protection casing (41) are outer and follow circumference parcel air spring body (2) with first protection casing (41), second protection casing (42) with mount pad (3) assemble with interference fit's mode down.

7. An air spring according to claim 3, wherein: the lower mounting seat (3) further comprises a first base (31) and a second base (32), the first base (31) is connected with the end cover (26) through a stud, the second base (32) is fixed on the rear frame, and the first base (31) is arranged above the second base (32) and is assembled and fixed with the second base (32).

8. An air spring according to claim 7, wherein: the positioning support (33) comprises a first positioning part (331), a second positioning part (332) and a connecting part (334) connected between the first positioning part (331) and the second positioning part (332), the first positioning part (331) is positioned above the second positioning part (332) and is connected with the second positioning part (332) through the connecting part (334), the first positioning part (331) is assembled with the first base (31), and the second positioning part (332) is assembled with the second base (32).

9. An air spring according to claim 8, wherein: the lower mounting seat (3) further comprises a positioning groove (34), a first positioning groove (341) used for accommodating the first positioning portion (331) is formed in the first base (31), the first positioning groove (341) is formed in the bottom of the first base (31), a second positioning groove (342) used for accommodating the second positioning portion (332) is formed in the second base (32), and the second positioning groove (342) is concavely formed in the middle of the second base (32).

10. An air spring according to claim 8, wherein: the positioning support (33) further comprises an inverted triangle buckle (333), the inverted triangle buckle (333) is respectively arranged on the inner edge of the first positioning portion (331) and the lower edge of the second positioning portion (332), and the first base (31) and the second base (32) are respectively clamped and fixed with the positioning support (33) through the inverted triangle buckle (333).