Air spring assembly anti-rotation structure and air spring assembly

Abstract

The application discloses an air spring assembly anti-rotation structure and an air spring assembly. The air spring assembly anti-rotation structure comprises a piston, a first gasket with a ring structure, a second gasket with a ring structure and a shock absorber outer cylinder. The first gasket is connected to the piston and the second gasket. The shock absorber outer cylinder is coaxially arranged in the piston, the first gasket and the second gasket. The shock absorber outer cylinder is fixedly connected to the piston and the first gasket. The piston has a first end and a second end in the axial direction. The second end is provided with at least one notch. The first gasket is provided with at least one convex block in the circumferential direction, which is connected to the at least one notch. The connection positions of the first gasket and the second gasket are provided with matched gears. The embodiment of the application can prevent the piston from being twisted when the first gasket is twisted with the shock absorber.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to an anti-rotation structure for an air spring assembly and an air spring assembly. Background Technology

[0002] In recent years, with the development of the automotive industry and consumers' increasing demands for driving comfort, the prospects for automotive air suspension systems have become increasingly broad. Firstly, automotive air suspension systems can improve vehicle performance. Traditional suspension systems typically offer only a fixed height and stiffness, unable to adapt to different road conditions and driving situations. Air suspension systems, however, automatically adjust suspension height and stiffness according to vehicle load and driving conditions, providing a more stable and smoother driving experience, making driving easier and more comfortable. Secondly, automotive air suspension systems can also improve vehicle safety. As vehicle speed increases and road conditions become more complex, traditional suspension systems are prone to body swaying and loss of control, thus affecting driving safety. Air suspension systems, on the other hand, automatically adjust suspension height and stiffness according to vehicle status and driving conditions, providing a more stable and safer driving experience, effectively reducing the occurrence of accidents. Finally, automotive air suspension systems can also improve driving comfort. Traditional suspension systems are easily affected by road bumps and vibrations during driving, causing discomfort to the driver. The air suspension system can automatically adjust the suspension height and stiffness according to the vehicle's load and driving conditions, providing a smoother and more comfortable driving experience, allowing the driver to feel more pleasant and relaxed.

[0003] Air suspension systems are classified into open and closed systems based on their enclosure type. Open systems are simpler in structure, lower in cost, and easier to maintain than closed systems, and are therefore the most common. They mainly consist of front / rear air spring assemblies, air pumps, distribution valves, air lines, air tanks, and controllers. The air spring assembly, as one of the most important components of an air suspension system, is available in single-chamber, dual-chamber, and multi-chamber structures. Currently, single-chamber assemblies are more common in the industry, and the technology is relatively mature. The front air spring assembly is connected to the vehicle body and control arms via shock absorbers.

[0004] Existing air spring assemblies directly use a gasket to press against the piston and the outer cylinder of the shock absorber. While this structure is simple in design, it lacks the function of preventing the piston from twisting along with the gasket when the shock absorber twists, which is detrimental to the life of the air spring. At the same time, it is difficult to adjust the angle during the assembly of the top seat, resulting in a long production cycle and requiring the use of specialized equipment.

[0005] Therefore, overcoming the shortcomings of the existing technology is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] To address the above problems, the present invention provides an anti-rotation structure for an air spring assembly.

[0007] The objective of this invention can be achieved through the following methods:

[0008] The present invention provides an anti-rotation structure for an air spring assembly, comprising: a piston, a first bushing with an annular structure, a second bushing with an annular structure, and an outer cylinder of a shock absorber;

[0009] The first pad is centrally connected to the piston and the second pad; the outer cylinder of the shock absorber is coaxially inserted into the piston, the first pad and the second pad, and the outer cylinder of the shock absorber is fixedly connected to the piston and the first pad respectively, and the piston is fixedly connected to the first pad;

[0010] The piston has a first end and a second end in the axial direction, and the second end is provided with at least one notch; the first gasket is provided with at least one boss in the circumferential direction that engages with at least one of the notches; the connection positions of the first gasket and the second gasket are respectively provided with cooperating gears.

[0011] Furthermore, one end of the outer cylinder of the shock absorber is fixed to the first end, and the other end of the outer cylinder of the shock absorber extends out of the second pad; at least one first reinforcing rib is provided on the inner peripheral wall of the first end, and one end of the outer cylinder of the shock absorber is fixedly connected to at least one of the first reinforcing ribs by an interference fit.

[0012] Furthermore, the first gasket has a first annular ring and a second annular ring that are axially connected as one piece, the outer diameter of the first annular ring is smaller than the outer diameter of the second annular ring; the outer peripheral wall of the first annular ring is provided with at least one of the aforementioned bosses and at least one second reinforcing rib, and the inner peripheral wall of the first annular ring is provided with at least one third reinforcing rib; a first gear ring is provided on the surface of the second annular ring that is opposite to the surface of the first annular ring.

[0013] Furthermore, the outer peripheral wall of the shock absorber outer cylinder is fixedly connected to at least one of the third reinforcing ribs in an interference fit manner; the inner peripheral wall of the second end is fixedly connected to at least one of the second reinforcing ribs in an interference fit manner.

[0014] Furthermore, the second gasket has a third annular ring and a fourth annular ring that are axially connected as one piece. The outer diameter of the third annular ring is smaller than the outer diameter of the fourth annular ring, and the inner diameter of the third annular ring is smaller than the inner diameter of the fourth annular ring. A second gear ring is provided on the surface of the third annular ring facing away from the fourth annular ring, and a protrusion is provided on the surface of the other end of the third annular ring.

[0015] Furthermore, the first gear ring meshes with the second gear ring.

[0016] Furthermore, the third annular ring is provided with at least one weight-reducing hole.

[0017] Further, it includes: a spring tray; the spring tray has a ring-shaped structure, and the spring tray is provided with mounting holes that mate with the protrusion.

[0018] Further, it includes: a dust cover; the dust cover is coaxially inserted through the second liner, the first liner, and the piston; wherein, the inner peripheral wall of one end of the dust cover is fixed to the outer edge of the fourth annular ring, and the other end of the dust cover faces the piston.

[0019] Compared with the prior art, this application has the following beneficial effects:

[0020] In the anti-rotation structure of the air spring assembly provided in this embodiment of the invention, the outer cylinder of the shock absorber is fixedly connected to the piston and the first pad. The piston and the first pad are fixedly connected and locked by at least one notch and a boss, which can prevent the piston from twisting along with the first pad when it twists with the shock absorber, thus reducing the life of the air spring assembly. Furthermore, the first pad and the second pad are engaged by a gear structure. When adjusting the angle of the upper top seat, the angle of the upper top seat can be adjusted by rotating the first pad, which greatly saves manpower and investment in special equipment, saving costs and improving production cycle.

[0021] Another object of the present invention is to provide an air spring assembly, including an anti-rotation structure for an air spring assembly provided in the embodiments of the present invention.

[0022] Compared to the prior art, the beneficial effects of the air spring assembly of the present invention are the same as those of the anti-rotation structure of the air spring assembly provided in the embodiments of the present invention, and will not be repeated here.

[0023] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 An isometric view of an air spring assembly provided in an embodiment of the present invention is shown;

[0026] Figure 2 A schematic diagram of a piston in an air spring assembly anti-rotation structure provided in an embodiment of the present invention is shown;

[0027] Figure 3 A schematic diagram of the first gasket of an anti-rotation structure for an air spring assembly provided in an embodiment of the present invention is shown;

[0028] Figure 4 A schematic diagram of the second gasket of an anti-rotation structure for an air spring assembly provided in an embodiment of the present invention is shown;

[0029] Figure 5 A schematic diagram of a dust cover for an anti-rotation structure of an air spring assembly provided in an embodiment of the present invention is shown;

[0030] Figure 6 A schematic diagram of a spring tray for an anti-rotation structure of an air spring assembly provided in an embodiment of the present invention is shown;

[0031] Figure 7 A schematic diagram of the shock absorber outer cylinder of an air spring assembly anti-rotation structure provided in an embodiment of the present invention is shown;

[0032] In the diagram, 1-piston, 11-first end, 12-second end, 13-notch, 14-notch, 2-first gasket, 21-first annular ring, 211-second reinforcing rib, 212-third reinforcing rib, 213-bore, 22-second annular ring, 221-first gear ring, 3-second gasket, 31-third annular ring, 311-second gear ring, 312-protrusion, 313-weight reduction hole, 32-fourth annular ring, 321-outer edge of fourth annular ring, 4-dust cover, 41-one end of dust cover, 42-other end of dust cover, 5-spring tray, 51-mounting hole, 6-shock absorber outer cylinder, 61-one end of shock absorber outer cylinder, 62-other end of shock absorber outer cylinder, 63-outer peripheral wall of shock absorber outer cylinder. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] like Figures 2 to 7 As shown, an embodiment of the present invention provides an anti-rotation structure for an air spring assembly, comprising: a piston, a first annular gasket, a second annular gasket, and a shock absorber outer cylinder;

[0035] The first pad is centrally connected to the piston and the second pad; the outer cylinder of the shock absorber is coaxially inserted into the piston, the first pad and the second pad, and the outer cylinder of the shock absorber is fixedly connected to the piston and the first pad respectively, and the piston is fixedly connected to the first pad;

[0036] The piston has a first end and a second end in the axial direction, and the second end is provided with at least one notch; the first gasket is provided with at least one boss in the circumferential direction that engages with at least one of the notches; the connection positions of the first gasket and the second gasket are respectively provided with cooperating gears.

[0037] In the anti-rotation structure of the air spring assembly provided in this embodiment of the invention, the outer cylinder of the shock absorber is fixedly connected to the piston and the first pad. The piston and the first pad are fixedly connected and locked by at least one notch and a boss, which can prevent the piston from rotating along with the first pad when it rotates with the shock absorber, thus preventing a reduction in the life of the air spring assembly. Furthermore, the first pad and the second pad are engaged by a gear structure. When adjusting the angle of the upper top seat, the angle of the upper top seat can be adjusted by rotating the first pad, which greatly saves manpower and investment in special equipment, saving costs and improving production cycle.

[0038] The following is combined Figures 2 to 7 The structure and combination of the components of the anti-rotation structure of the air spring assembly provided by the present invention will be described.

[0039] Referring to the embodiments of the present invention, see Figure 2 The piston 2 has a cylindrical structure with a hollow inner cavity. The piston 2 has a first end 11 and a second end 12 in the axial direction. The inner peripheral wall of the first end 11 is provided with at least one first reinforcing rib, and the second end 12 is provided with at least one notch (13, 14).

[0040] In one specific implementation, see Figure 3 The first gasket 2 has a first annular ring 21 and a second annular ring 22 axially connected as one piece, with the outer diameter of the first annular ring 21 being smaller than the outer diameter of the second annular ring 22. The outer peripheral wall of the first annular ring 21 is provided with at least one boss 213 and at least one second reinforcing rib 211, and the inner peripheral wall of the first annular ring 21 is provided with at least one third reinforcing rib 212. Both the at least one boss 213 and the at least one second reinforcing rib 211 are in contact with the upper surface of the second annular ring 22. A first gear ring 221 is provided on the surface of the second annular ring 22 facing away from the first annular ring 21, that is, the first gear ring 221 is provided on the lower surface of the second annular ring 22.

[0041] In one specific implementation, see Figure 4The second gasket 3 has a third annular ring 31 and a fourth annular ring 32 that are axially connected as one piece. The outer diameter of the third annular ring 31 is smaller than the outer diameter of the fourth annular ring 32, and the inner diameter of the third annular ring 31 is smaller than the inner diameter of the fourth annular ring 32. That is, the outer and inner edges of the second gasket 3 in the circumferential direction each form an annular step. A second gear ring 311 is provided on the surface of the third annular ring 31 facing away from the fourth annular ring 32, and a protrusion 312 is provided on the surface of the other end of the third annular ring 31. That is, the second gear ring 311 is provided on the upper surface of the third annular ring 31, and the protrusion 312 is provided on the lower surface of the third annular ring 31. In a specific embodiment, the third annular ring 31 is provided with at least one weight-reducing hole 313. Preferably, when the number of weight-reducing holes 313 is two or more, the weight-reducing holes 313 are evenly distributed in the circumferential direction on the third annular ring 31. Those skilled in the art should understand that the specific number of weight-reducing holes 313 should be such that reasonable weight reduction can be achieved without affecting the strength and rigidity of the second pad 3, and no further limitations are imposed here.

[0042] In the air spring assembly anti-rotation structure provided in this embodiment of the invention, the shock absorber outer cylinder 6 is coaxially inserted into the piston 1 during assembly. One end 61 of the shock absorber outer cylinder is fixed to the first end 11, and the other end 62 of the shock absorber outer cylinder extends out of the second end 12. Specifically, one end 61 of the shock absorber outer cylinder is fixedly connected to at least one first reinforcing rib by an interference fit. The number of the at least one first reinforcing rib can be one, two, or more; when there are two or more, the first reinforcing ribs are evenly distributed on the inner peripheral wall of the first end 11.

[0043] The following describes the fixed connection between the first pad 2, piston 1, and shock absorber outer cylinder 6, in conjunction with an embodiment of the present invention. Specifically, the shock absorber outer cylinder 6 is coaxially inserted into the piston 1 and the first pad 2. The outer peripheral wall 63 of the shock absorber outer cylinder is fixedly connected to at least one third reinforcing rib 212 by an interference fit. The inner peripheral wall of the second end 12 of the piston 1 is fixedly connected to at least one second reinforcing rib 211 by an interference fit. At the same time, at least one boss 213 and at least one notch (13, 14) are engaged and limited. The number of at least one boss 213 and at least one notch (13, 14) is the same. For better limiting effect between the piston 1 and the first pad 2, the number is preferably two, and they are axially symmetrically arranged in the circumferential direction of the first annular ring 21.

[0044] The anti-rotation structure of the air spring assembly provided in this embodiment of the invention has the outer cylinder 6 of the shock absorber fixedly connected to the piston 1 and the first pad 2. The piston 1 and the first pad 2 are fixedly connected and are locked by at least one notch (13,14) and the boss 213. This can prevent the piston 1 from rotating when the first pad 2 rotates with the shock absorber, thus preventing a reduction in the life of the air spring assembly.

[0045] In this embodiment of the invention, the second liner 3 is coaxially mounted with the first liner 2. The first gear ring 221 meshes with the second gear ring 311. Because the first liner 2 and the second liner 3 are engaged by a gear structure, the angle of the upper top seat can be adjusted by rotating the first liner 2 when installing and adjusting the angle of the upper top seat, which greatly saves manpower and investment in special equipment, thus saving costs and improving production cycle time. If the rotational force required for the first liner 2 is too large, the magnitude of the rotational force can be changed by adjusting the gear angle between the first gear ring 221 and the second gear ring 311.

[0046] The anti-rotation structure for the air spring assembly provided in this embodiment of the invention further includes a spring tray 5 and a dust cover 4. The spring tray 5 has an annular structure and is provided with mounting holes 51. When the spring tray 5 and the second gasket 3 are in contact, the protrusion 312 at the lower end of the third annular ring 3 and the mounting holes 51 are fixed in place. The dust cover 4 is coaxially inserted through the second gasket 3, the first gasket 2, and the piston 1. The inner peripheral wall of one end 41 of the dust cover is fixed to the outer edge 321 of the fourth annular ring, and the other end 42 of the dust cover faces the piston 1. The second gasket 3 protects the air spring and also provides a mounting position for the dust cover 4.

[0047] Another object of the present invention is to provide an air spring assembly, see reference. Figure 1 This includes an anti-rotation structure for an air spring assembly provided in an embodiment of the present invention.

[0048] Compared to the prior art, the beneficial effects of the air spring assembly of the present invention are the same as those of the anti-rotation structure of the air spring assembly provided in the embodiments of the present invention, and will not be repeated here.

[0049] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this 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. Therefore, they should not be construed as limitations on this invention.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0053] In the description of this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this invention, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, those skilled in the art can combine different embodiments or examples and features of different embodiments or examples described in this invention without contradiction.

[0054] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An anti-rotation structure for an air spring assembly, characterized in that, include: Piston (1), first annular gasket (2), second annular gasket (3), and shock absorber outer cylinder (6). The first pad (2) is centrally connected to the piston (1) and the second pad (3); the outer cylinder (6) of the shock absorber is coaxially inserted into the piston (1), the first pad (2) and the second pad (3), and the outer cylinder (6) of the shock absorber is fixedly connected to the piston (1) and the first pad (2) respectively, and the piston (1) is fixedly connected to the first pad (2); The piston (1) has a first end (11) and a second end (12) in the axial direction, and the second end (12) is provided with at least one notch (13, 14); the first liner (2) is provided with at least one boss (213) in the circumferential direction that engages with at least one of the notches (13, 14); the connection positions of the first liner (2) and the second liner (3) are respectively provided with matching gears; The first gasket (2) has a first annular ring (21) and a second annular ring (22) that are axially connected as one piece. The outer diameter of the first annular ring (21) is smaller than the outer diameter of the second annular ring (22). At least one of the bosses (213) is provided on the outer peripheral wall of the first annular ring (21). A first gear ring (221) is provided on the surface of the second annular ring (22) that is away from the first annular ring (21). The second gasket (3) has a third annular ring (31) and a fourth annular ring (32) that are axially connected as one unit.

2. The anti-rotation structure of the air spring assembly according to claim 1, characterized in that, include: One end (61) of the outer cylinder (6) of the shock absorber is fixed to the first end (11), and the other end (62) of the outer cylinder (6) of the shock absorber extends out of the second pad (3); at least one first reinforcing rib is provided on the inner peripheral wall of the first end (11), and one end (61) of the outer cylinder (6) of the shock absorber is fixedly connected to at least one of the first reinforcing ribs by an interference fit.

3. The anti-rotation structure of the air spring assembly according to claim 1, characterized in that, include: The outer peripheral wall of the first annular ring (21) is provided with at least one second reinforcing rib (211), and the inner peripheral wall of the first annular ring (21) is provided with at least one third reinforcing rib (212).

4. The anti-rotation structure of the air spring assembly according to claim 3, characterized in that, include: The outer peripheral wall (63) of the outer cylinder (6) of the shock absorber is fixedly connected to at least one of the third reinforcing ribs (212) by an interference fit; the inner peripheral wall of the second end (12) is fixedly connected to at least one of the second reinforcing ribs (211) by an interference fit.

5. The anti-rotation structure of the air spring assembly according to claim 3, characterized in that, include: The outer diameter of the third annular ring (31) is smaller than the outer diameter of the fourth annular ring (32), and the inner diameter of the third annular ring (31) is smaller than the inner diameter of the fourth annular ring (32); a second gear ring (311) is provided on the surface of the third annular ring (31) facing away from the fourth annular ring (32), and a protrusion (312) is provided on the surface of the other end of the third annular ring (31).

6. The anti-rotation structure for the air spring assembly according to claim 5, characterized in that, include: The first gear ring (221) meshes with the second gear ring (311).

7. The anti-rotation structure of the air spring assembly according to claim 5, characterized in that, include: The third annular ring (31) is provided with at least one weight-reducing hole (313).

8. The anti-rotation structure of the air spring assembly according to claim 5, characterized in that, include: Spring tray (5); the spring tray (5) has a ring structure and is provided with mounting holes (51) that cooperate with the protrusion (312).

9. The anti-rotation structure for the air spring assembly according to claim 5, characterized in that, include: Dust cover (4); the dust cover (4) is coaxially inserted outside the second liner (3), the first liner (2), and the piston (1); wherein, the inner peripheral wall of one end (41) of the dust cover is fixed to the outer edge (321) of the fourth annular ring, and the other end (42) of the dust cover faces the piston (1).

10. An air spring assembly, characterized in that, Including the anti-rotation structure of the air spring assembly as described in any one of claims 1 to 9.

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