Air spring base, air spring structure and vehicle

Abstract

The embodiment of the present application provides an air spring base, an air spring structure and a vehicle, which comprise a shell, the shell is provided with an abutting portion for abutting with an air bag in an inflated state, the abutting portion is in a bowl shape; and the abutting portion is made of a flexible material; the shell is provided with a supporting cavity for supporting the abutting portion, the supporting cavity is filled with a liquid to form a hydraulic cavity, and the supporting cavity is used for generating extrusion force on the air bag in the inflated state, so that the air bag is always aligned with the center of the abutting portion. Through the air spring base, the air spring structure and the vehicle provided by the embodiment of the present application, the air bag can be prevented from being burst.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and more specifically, to an air spring base, an air spring structure, and a vehicle. Background Technology

[0002] An air spring is a spring that utilizes the elasticity of air by filling a retractable, sealed container with compressed air. To improve the ride comfort of automobiles, air springs are increasingly being used in vehicle suspension systems.

[0003] However, air springs are prone to bursting during inflation, which can damage the vehicle or even cause injury to people. Summary of the Invention

[0004] This application provides an air spring base, an air spring structure, and a vehicle, aiming to reduce the occurrence of airbag rupture.

[0005] The first aspect of this application provides an air spring base, including a housing, wherein the housing is provided with an abutment portion for abutting against an inflated airbag, the abutment portion being cup-shaped; and the abutment portion being made of a flexible material;

[0006] The housing is provided with a support cavity for supporting the abutment portion. The support cavity is filled with liquid to form a hydraulic cavity. The support cavity is used to generate a compressive force on the inflated airbag so that the airbag is always aligned with the center of the abutment portion.

[0007] Optionally, a support portion is provided inside the housing, the support portion is located in the middle of the housing, and the support portion is fixedly connected to the central part of the abutment portion.

[0008] Optionally, a receiving cavity is formed between the inner wall of the housing and the outer wall of the support, and the receiving cavity is filled with liquid to form a hydraulic cavity.

[0009] Optionally, the support portion is hollow inside.

[0010] Optionally, the bottom of the housing is provided with a connecting part for connecting to a vehicle.

[0011] A second aspect of this application provides an air spring structure, including an air spring base as provided in the first aspect of this application.

[0012] It also includes an airbag assembly, which is separate from the air spring base, and the airbag assembly abuts against the abutment portion after inflation.

[0013] Optionally, the airbag assembly includes an airbag body, a top cover, and a clamp;

[0014] The clamp secures and seals the upper cover to the airbag body;

[0015] An air vent is provided on the side wall of the upper cover, through which air is inflated into the airbag body or air is deflated from the airbag body.

[0016] Optionally, the upper cover is provided with a mounting part for connecting to a vehicle.

[0017] The second aspect of this application provides a vehicle that includes an air spring base as provided in the first aspect of this application, or an air spring structure as provided in the second aspect of this application.

[0018] Beneficial effects:

[0019] The air spring base, air spring structure, and vehicle provided in this application utilize a flexible material abutment portion on the housing and a support cavity within the housing, containing liquid to form a hydraulic chamber. When the airbag body is inflated and abuts against the abutment portion, if the airbag body is tilted, it will exert pressure on the support cavity. Since the support cavity is filled with liquid, which has a certain fluidity, it will rebound under pressure. In turn, the hydraulic chamber will exert a compressive force on the airbag body, aligning the airbag body with the center of the abutment portion, thereby preventing the airbag body from bursting due to lateral or torsional forces. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic cross-sectional view of an air spring base according to an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the air spring structure proposed in one embodiment of this application;

[0023] Figure 3 This is a cross-sectional schematic diagram of an air spring structure proposed in an embodiment of this application.

[0024] Reference numerals: 1. Shell; 11. Connecting part; 2. Abutting part; 3. Support cavity; 4. Support part; 5. Receiving cavity; 6. Airbag assembly; 61. Airbag body; 62. Top cover; 63. Clamp; 64. Mounting part. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In related technologies, air springs consist of an air bladder and a base, which are integrated. The air bladder is primarily made of rubber, therefore it cannot withstand torsional forces. However, before inflation, the rubber air bladder is flexible and can be bent arbitrarily. If the base is not properly engaged at the correct angle before inflation, the air bladder will experience torsional and bending forces during inflation, ultimately causing the weak connection between the air bladder and the base to break open and burst.

[0027] In view of this, embodiments of this application provide an air spring base, an air spring structure, and a vehicle. By providing a flexible material abutment portion on the housing and a support cavity inside the housing, and filling the support cavity with liquid, the support cavity forms a hydraulic cavity. When the airbag body is inflated and abuts against the abutment portion, if the airbag body is tilted, the airbag body will exert a certain pressure on the support cavity. Since the support cavity is filled with liquid, the liquid in the support cavity has a certain fluidity and will rebound under pressure. At this time, the hydraulic cavity will in turn exert a compressive force on the airbag body, aligning the center of the airbag body with the abutment portion, thereby preventing the airbag body from being subjected to lateral or torsional forces and bursting.

[0028] Example 1

[0029] Reference Figure 1 As shown, an air spring base disclosed in this application includes a housing 1, which is cylindrical and hollow. A contact portion 2 is provided on the top surface of the housing 1. After the air spring's airbag body 61 is inflated, the contact portion 2 will contact the airbag body 61. The contact portion 2 is bowl-shaped, and its area is larger than the contact area between the airbag body 61 and the contact portion 2. The contact portion 2 is made of a flexible material, specifically, it can be made of rubber.

[0030] Reference Figure 1As shown, a support cavity 3 is provided inside the housing 1. The support cavity 3 is used to support the abutment part 2, and the support cavity 3 is filled with liquid. In this way, the support cavity 3 forms a hydraulic cavity. After the hydraulic cavity is subjected to pressure, it will generate a reaction force on the abutment part 2. This reaction force will generate a squeezing force on the inflated airbag body 61, so that the airbag body 61 can always be aligned with the center of the abutment part 2.

[0031] For example, during the inflation of the airbag body 61, the airbag body 61 tilts. At this time, the airbag body 61 comes into contact with the edge of the contact portion 2, exerting pressure on the edge of the contact portion 2. This causes the edge of the contact portion 2 to deform and indent towards the hydraulic chamber. However, due to the support of the fluid in the hydraulic chamber, the edge of the contact portion 2 forms an inclined surface towards the center of the contact portion 2. Simultaneously, at the contact point between the airbag body 61 and the contact portion 2, the fluid generates a reverse squeezing force. As a result, the hydraulic chamber pushes the airbag body 61 towards the center of the contact portion 2. Thus, even without positioning, if the airbag body 61 tilts, it can eventually reach the center of the contact portion 2, achieving automatic centering and preventing the airbag body 61 from bursting due to lateral or torsional forces. Furthermore, since the area of ​​the contact portion 2 is larger than the contact area between the airbag body 61 and the contact portion 2, the support cavity 3 can push the airbag body 61 to the center of the contact portion 2 no matter where the airbag body 61 tilts to.

[0032] In practical applications, the liquid inside the support cavity 3 can be hydraulic oil.

[0033] In one embodiment, reference is made to... Figure 1 As shown, a support part 4 is provided inside the housing 1 to better support the airbag body 61.

[0034] Specifically, the support part 4 is made of rigid material and is located in the middle of the shell 1, that is, the support part 4 is located in the center of the support cavity 3. The support part 4 has a concave surface, and the concave surface of the support part 4 is fixedly connected to the central part of the abutment part 2. In this way, the central part of the abutment part 2 will not deform when subjected to force, thereby better supporting the airbag body 61, making the air spring more rigid and better adapted to the shape of the airbag body 61.

[0035] In practical applications, the support part 4 can be made of steel.

[0036] Meanwhile, in order to reduce the weight of the entire air spring base, the support part 4 is hollow inside, which makes it easier to achieve the weight reduction of the vehicle itself.

[0037] In this embodiment, refer to Figure 1As shown, after the support part 4 is provided inside the housing 1, the space between the outer side wall of the support part 4 and the inner side wall of the housing 1 forms a receiving cavity 5. Liquid is injected into the receiving cavity 5 to form a hydraulic cavity.

[0038] When the airbag body 61 is inflated, it tilts, mainly to the edge of the abutment part 2. After the support part 4 is provided in the middle of the abutment part 2 for support, a hydraulic cavity is formed in the housing 1 at the position corresponding to the edge of the abutment part 2, so that the airbag body 61 can be pushed into the center of the abutment part 2, thereby realizing the automatic centering of the airbag body 61.

[0039] In one embodiment, reference is made to... Figure 1 As shown, a connecting part 11 is provided at the bottom of the housing 1. The housing 1 can be fixedly connected to the vehicle through the connecting part 11, making the installation of the air spring base more convenient.

[0040] Example 2

[0041] Based on the same inventive concept, this application provides an air spring structure, including an air spring base as provided in Embodiment 1 of this application.

[0042] Reference Figure 2 and Figure 3 As shown, the air spring structure also includes an airbag assembly 6. When the airbag assembly 6 is not inflated, it is separate from the air spring base. When the airbag assembly 6 is inflated, the airbag assembly 6 abuts against the contact portion 2 of the air spring base.

[0043] In one embodiment, reference is made to... Figure 2 As shown, the airbag assembly 6 consists of an airbag body 61, an upper cover 62, and a clamp 63.

[0044] The airbag body 61 has an opening that fits onto the upper cover 62, while the clamp 63 fits onto the side wall of the upper cover 62 to fix and seal the upper cover 62 and the airbag body 61.

[0045] Meanwhile, an air vent (not shown in the figure) is provided on the side wall of the upper cover 62. Air can be inflated into the airbag body 61 through the air vent, or the air inside the airbag body 61 can be released. The contact area between the airbag body 61 and the abutment part 2 is changed according to the change of gas pressure inside the airbag body 61, thereby adjusting the stiffness of the air spring.

[0046] When the air spring is working, it inflates into the airbag body 61. During inflation, the airbag body 61 tilts, and at this time, the airbag body 61 comes into contact with the edge of the contact part 2, exerting pressure on the edge of the contact part 2. This causes the edge of the contact part 2 to deform and indent towards the hydraulic chamber. However, due to the support of the liquid in the hydraulic chamber, the edge of the contact part 2 forms an inclined surface towards the center of the contact part 2. At the same time, at the contact point between the airbag body 61 and the contact part 2, the liquid generates a reverse squeezing force, which pushes the airbag body 61 towards the center of the contact part 2. Thus, even if the airbag body 61 tilts without positioning, it can eventually reach the center of the contact part 2, achieving automatic centering and preventing the airbag body 61 from bursting due to lateral or torsional forces.

[0047] In one embodiment, reference is made to... Figure 2 As shown, the upper cover 62 is also provided with a mounting part 64, which can be used to connect the upper cover 62 to the vehicle, thereby installing the airbag assembly 6 as a whole onto the vehicle at the position corresponding to the air spring base.

[0048] Example 3

[0049] Based on the same inventive concept, embodiments of this application provide a vehicle including an air spring base as provided in Embodiment 1 of this application, or an air spring structure as provided in Embodiment 2 of this application.

[0050] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0051] It should also be noted that, in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor should they be construed as indicating or implying relative importance. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes the element.

[0052] The technical solutions provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand this application, and the content of this specification should not be construed as a limitation of this application. Furthermore, for those skilled in the art, there will be different forms of changes in the specific implementation methods and application scope based on this application. It is neither necessary nor possible to exhaustively list all implementation methods here, and obvious changes or modifications derived therefrom are still within the protection scope of this application.

Claims

1. An air spring base, characterized in that: Includes a housing (1), on which is provided an abutment part (2) for abutting against the airbag body (61) in an inflated state, the abutment part (2) being bowl-shaped; and the abutment part (2) being made of a flexible material; The housing (1) is provided with a support cavity (3) for supporting the abutment part (2). The support cavity (3) is filled with liquid to form a hydraulic cavity. The support cavity (3) is used to generate a squeezing force on the inflated airbag body (61) so that the airbag body (61) is always aligned with the center of the abutment part (2). A support part (4) is provided inside the housing (1). The support part (4) is located in the middle of the housing (1). The support part (4) is fixedly connected to the central part of the abutment part (2). A receiving cavity (5) is formed between the inner wall of the housing (1) and the outer wall of the support (4), and the receiving cavity (5) is filled with liquid to form a hydraulic cavity.

2. The air spring base according to claim 1, characterized in that: The support part (4) is hollow inside.

3. The air spring base according to claim 1, characterized in that: The bottom of the housing (1) is provided with a connecting part (11), which is used to connect with the vehicle.

4. An air spring structure, characterized in that: Includes the air spring base as described in any one of claims 1-3; It also includes an airbag assembly (6), which is separate from the air spring base, and the airbag assembly (6) abuts against the abutment part (2) after inflation.

5. The air spring structure according to claim 4, characterized in that: The airbag assembly (6) includes an airbag body (61), an upper cover (62), and a clamp (63); The clamp (63) fixes and seals the upper cover (62) to the airbag body (61); An air vent is provided on the side wall of the upper cover (62) to inflate or deflate the airbag body (61).

6. The air spring structure according to claim 5, characterized in that: The upper cover (62) is provided with a mounting part (64) for connecting to a vehicle.

7. A vehicle, characterized in that: It includes the air spring base as described in any one of claims 1-3, or the air spring structure as described in any one of claims 4-6.

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