Shock absorber protecting cover for air spring and air spring assembly adopting shock absorber protecting cover

Abstract

The invention relates to the field of air spring systems, in particular to a shock absorber protecting cover for an air spring and an air spring assembly adopting the shock absorber protecting cover, the shock absorber protecting cover comprises a protecting cover body, and a sleeving sinking groove is formed in the protecting cover body; a fastening mechanism is arranged on the inner wall of the sleeving sinking groove; the fastening mechanism comprises a plurality of extrusion bulges which are distributed on the inner wall of the sleeving sinking groove in parallel at intervals; according to the shock absorber protecting cover disclosed by the invention, the fastening mechanism is arranged on the inner wall of the shock absorber, so that interference fit between the shock absorber protecting cover and the shock absorber oil storage barrel can be ensured, and the connection tightness between the shock absorber protecting cover and the shock absorber oil storage barrel is ensured.

Description

Technical Field

[0001] The invention relates to the field of air spring systems, in particular to a shock absorber protective cover for an air spring and an air spring assembly using the shock absorber protective cover. Background Art

[0002] Currently, automobile suspension structures on the market are mainly divided into two categories: active suspension and passive suspension. Active suspension is mainly represented by air suspension.

[0003] Air suspension is divided into open system and closed system according to the closed form. The open system has a simple structure, low cost, and is easy to maintain compared to the closed system. It is also the most common and is mainly composed of front / rear air spring assembly, air pump, distribution valve, air pipeline, air tank and controller.

[0004] As one of the most important products in air suspension, the air spring assembly is divided into single-chamber, double-chamber and multi-chamber structures. Currently, the single-chamber is more common in the industry and the technology is more mature.

[0005] The front air spring assembly is connected to the body and control arm through the shock absorber

[0006] The air spring strut is one of the key components in the automobile air suspension system. Its main function is to support the weight of the vehicle and provide appropriate stiffness for the vehicle while attenuating the vibration transmitted to the vehicle by the road surface.

[0007] At present, the application of gas spring sliding column is not very extensive. Compared with the traditional shock absorber, its structure is not yet fully mature. Therefore, in the actual application process, there is a risk of abnormal noise when the air spring and shock absorber interface are matched.

[0008] At the same time, since the outer tube of the shock absorber oil storage barrel in the shock absorber is made of metal material, the connection between the shock absorber cover and the shock absorber oil storage barrel is prone to be unstable and easy to fall off.

[0009] Therefore, in order to improve or solve at least one of the above problems, it is necessary to optimize the design of the existing shock absorber assembly. Summary of the invention

[0010] The object of the present invention is to provide a vibration damper protective cover with high installation stability.

[0011] In order to achieve the above object, the technical solution adopted by the present invention is:

[0012] A shock absorber protective cover for an air spring comprises a protective cover body, wherein the protective cover body is provided with a sleeve groove; a fastening mechanism is provided on the inner wall of the sleeve groove; the fastening mechanism comprises a plurality of extrusion protrusions which are spaced and parallelly distributed on the inner wall of the sleeve groove.

[0013] Each of the extrusion protrusions comprises an extrusion section and a guide section; the guide section is distributed at one end of the extrusion section close to the sleeve sink.

[0014] The horizontal cross section of the extrusion section is an isosceles triangle.

[0015] A guide mechanism is arranged on the outer wall of the protective cover body, and the guide mechanism comprises a plurality of lateral guide ribs; the plurality of lateral guide ribs are evenly distributed at intervals on the outer side surface of the protective cover body.

[0016] Each of the lateral guide ribs is provided with a guide slope.

[0017] The thickness of adjacent lateral guide ribs is different.

[0018] The protective cover body comprises a top plate, an annular side plate is arranged on the top plate, and the top plate and the annular side plate form a box structure with an opening at the lower end.

[0019] The annular side plate is provided with a flanged ring rib at one end away from the top plate; the flanged ring rib is protrudingly arranged on the annular side plate.

[0020] The flanged ring rib is in a frustum-shaped structure, and the outer side surface of the flanged ring rib is an inclined slope; the angle between the inclined slope and the outer side surface of the annular side plate is an obtuse angle.

[0021] An air spring assembly comprises an aluminum sleeve, an air bag, a piston and a shock absorber; the shock absorber, the piston, the air bag and the aluminum sleeve are coaxially arranged in sequence; the shock absorber is provided with a shock absorber cover for the air spring; the aluminum sleeve is provided with a cable arrangement buckle for arranging cables.

[0022] The advantages of the present invention are:

[0023] The invention discloses a shock absorber protective cover for an air spring and an air spring assembly using the shock absorber protective cover.

[0024] The shock absorber protective cover disclosed by the present invention can ensure that an interference fit is formed between the shock absorber protective cover and the shock absorber oil storage barrel by arranging a fastening mechanism on the inner wall of the shock absorber, thereby ensuring the fastness of the connection between the shock absorber protective cover and the shock absorber oil storage barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following is a brief description of the contents expressed in the drawings of the present invention and the symbols in the drawings:

[0026] Figure 1 It is a three-dimensional diagram of the shock absorber protective cover in the present invention.

[0027] Figure 2 It is a front view of the shock absorber cover in the present invention.

[0028] Figure 3It is a three-dimensional diagram of the cable buckle in the present invention.

[0029] Figure 4 It is a front view of the cable buckle in the present invention.

[0030] Figure 5 It is a schematic diagram of the structure of the cable buckle in the present invention when connecting the wiring harness.

[0031] Figure 6 It is a partial cross-sectional view of the air spring assembly of the present invention.

[0032] The marks in the above figure are:

[0033] 1. Shock absorber cover, 2. Guide mechanism, 3. Fastening mechanism, 4. Flanged rib, 5. Cable buckle. DETAILED DESCRIPTION

[0034] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0035] A shock absorber cover 1 for an air spring comprises a cover body 11, on which a sleeve groove is provided; a fastening mechanism 3 is provided on the inner wall of the sleeve groove; the shock absorber cover 1 disclosed in the present invention can ensure an interference fit between the shock absorber cover 1 and the oil storage barrel of the shock absorber 102 by arranging the fastening mechanism 3 on the inner wall of the shock absorber 102, thereby ensuring the tightness of the connection between the shock absorber cover 1 and the oil storage barrel of the shock absorber 102.

[0036] The shock absorber protective cover 1 disclosed in the present invention is mainly used for limiting the end of the oil storage barrel of the shock absorber 102 in the air spring.

[0037] The air spring shock absorber cover 1 disclosed in the present invention mainly includes a cover body 11, on which a sleeve groove is provided; in subsequent use, the cover body 11 is sleeved on the shock absorber 102 oil storage barrel through the sleeve groove; the shock absorber cover 1 and the shock absorber 102 oil storage barrel generally need to be connected in an interference fit manner.

[0038] In addition, in the present invention, a fastening mechanism 3 is provided on the inner wall of the sleeve groove; the fastening mechanism 3 includes a plurality of extrusion protrusions 31 spaced and parallelly distributed on the inner wall of the sleeve groove; the setting of the extrusion protrusions 31 is equivalent to reducing the inner diameter of the sleeve groove, which is convenient for subsequent assembly and increases the restraint positioning between the shock absorber cover 1 and the shock absorber 102 oil storage barrel; ensures the stability of the installation of the shock absorber 102 oil storage barrel and the shock absorber cover 1.

[0039] In the present invention, the fastening mechanism 3 includes a plurality of extrusion protrusions 31; generally at least four are provided, and the plurality of extrusion protrusions 31 are evenly distributed at intervals. Such an arrangement can ensure the stability of the connection between the shock absorber cover 1 and the oil storage tank of the shock absorber 102 in the circumferential direction.

[0040] Furthermore, in the present invention, each of the extrusion protrusions 31 includes an extrusion section and a guide section; the guide section is distributed at one end of the extrusion section close to the socket groove; the guide section of the present invention, as the name implies, plays a guiding role, and the guide section can be designed as an inclined surface to facilitate the socketing of the shock absorber cover 1 on the shock absorber 102 oil storage barrel during subsequent use, and the extrusion section plays an extrusion limiter role to facilitate the extrusion and fixation of the side of the shock absorber 102 oil storage barrel.

[0041] Furthermore, the horizontal cross-section of the extrusion section in the present invention is an isosceles triangle; in the present invention, such a setting can reduce the contact area between the extrusion protrusion 31 and the oil storage barrel of the shock absorber 102, ensure the extrusion force, and thus better ensure the stability of the connection between the shock absorber cover 1 and the oil storage barrel of the shock absorber 102.

[0042] Furthermore, in the present invention, a guide mechanism 2 is provided on the outer wall of the sleeve body, and the guide mechanism 2 includes a plurality of lateral guide ribs 21; the plurality of lateral guide ribs 21 are evenly distributed at intervals on the outer surface of the protective cover body 11; the setting of the lateral guide ribs 21 in the present invention mainly serves as a limiting role, which is convenient for subsequent use and can reduce the mutual force between the two components during the deflection and torsional movement of the empty spring piston 103.

[0043] Furthermore, in the present invention, each of the lateral guide ribs 21 is provided with a guide slope 22; the setting of the guide slope 22 in the present invention makes the lateral guide rib 21 thin at the upper end and thick at the lower end, and such a setting facilitates the subsequent sleeve installation of the piston 103.

[0044] Furthermore, in the present invention, the thicknesses of adjacent lateral guide ribs 21 are different; in the present invention, the different here means that the thicknesses of adjacent lateral guide ribs 21 are different, so that the guide mechanism 2 forms an uneven annular structure, which better limits the position of the piston 103, thereby reducing the deflection of the empty spring piston 103.

[0045] Furthermore, in the present invention, the protective cover body 11 includes a top plate, on which an annular side plate is provided, and the top plate and the annular side plate form a box structure with an opening at the lower end; through such an arrangement, the present invention enables the shock absorber protective cover 1 to form a box structure with a groove, which is convenient for subsequent use and can be sleeved on the oil storage barrel of the shock absorber 102.

[0046] Furthermore, in the present invention, a flanged annular rib 4 is provided at one end of the annular side plate away from the top plate; the flanged annular rib 4 is protrudingly arranged on the annular side plate; based on the above design, the present invention makes the lower end of the shock absorber cover 1 equivalent to adding a flange, ensuring that when the empty spring deflects and torsional movements, one side squeezes the shock absorber cover 1, and at the same time, the empty spring piston 103 on the other side cooperates with the flange of the shock absorber cover 1 to firmly press the shock absorber cover 1 on the shock absorber 102, thereby avoiding the shock absorber cover 1 from slipping when the empty spring piston 103 deflects and torsional movements.

[0047] In addition, in the present invention, the flanged ring rib 4 is a conical structure, and the outer side surface of the flanged ring rib 4 is an inclined slope 41; the angle between the inclined slope 41 and the outer side surface of the annular side plate is an obtuse angle; based on such a setting, the present invention can avoid the flanged ring rib 4 from having edges, thereby reducing damage to the piston 103 during subsequent use.

[0048] An air spring assembly includes an aluminum sleeve 105, an air bag 104, a piston 103 and a shock absorber 102; the shock absorber 102, the piston 103, the air bag 104 and the aluminum sleeve 105 are coaxially arranged in sequence; a shock absorber cover 1 for the air spring is provided on the shock absorber 102; the air spring assembly with the shock absorber cover 1 can effectively avoid abnormal noise of the air spring during vehicle movement and greatly reduce the failure of the air spring system and the explosion of the air spring due to the smashing of the shock absorber cover 1, further improving the durability and reliability of the air spring sliding column.

[0049] At the same time, the aluminum sleeve 105 in the present invention is provided with a cable arrangement buckle 5 for arranging the cables; in the present invention, the arrangement of the cable arrangement buckle 5 facilitates providing a reliable clamping point for the empty spring tube and the wiring harness.

[0050] In the present invention, the cable arranging buckle 5 includes a substrate 51, on which a buckle body is provided. The substrate 51 is an arc-shaped plate structure, which can be attached to the outer wall of the aluminum sleeve 105 during subsequent use, so as to facilitate the arrangement of the cable arranging buckle 5 on the aluminum sleeve 105. In addition, in the present invention, the cable arranging buckle 5 is bonded to the aluminum sleeve 105, specifically, the substrate 51 is bonded to the aluminum sleeve 105; and the buckle body mainly includes a base 52, on which two barb plates 53 are arranged opposite to each other; such a design facilitates the subsequent cable arranging operation of the wiring harness or pipeline.

[0051] specific:

[0052] The shock absorber protective cover 1 disclosed in the present invention mainly comprises a protective cover body 11 , a fastening mechanism 3 is arranged on the inner wall of the protective cover body 11 , and a guiding mechanism 2 is arranged on the outside.

[0053] The shock absorber protective cover 1 disclosed in the present invention adds an extrusion protrusion 31 inside the shock absorber protective cover 1 so that the extrusion protrusion 31 and the oil storage barrel of the shock absorber 102 are interference-fitted.

[0054] A guide mechanism 2 is added to the outside of the shock absorber cover 1 to reduce the force between the air spring piston 103 during the deflection and torsional movement.

[0055] A flanged ring rib 4 is added to the lower end of the cover body 11 of the shock absorber cover 1 to ensure that when the empty spring deflects and twists, one side squeezes the shock absorber cover 1, and at the same time, the empty spring piston 103 on the other side cooperates with the flanged ring rib 4 on the shock absorber cover 1 to firmly press the shock absorber cover 1 on the shock absorber 102, thereby preventing the shock absorber cover 1 from slipping when the empty spring piston 103 deflects and twists.

[0056] A cable arranging buckle 5 is added to the surface of the empty spring aluminum casing, and the cable arranging buckle 5 is an adhesive buckle, which provides a reliable clamping point for the empty spring tube and the wiring harness.

[0057] In the present invention, the hollow spring piston 103 and the shock absorber cover 1 have a clearance or transition fit, and the lateral guide ribs 21 on the outer side of the shock absorber cover 1 reduce the deflection or torsional force of the piston 103. The sleeve groove in the shock absorber cover 1 has an interference fit with the oil storage barrel of the shock absorber 102 through the extrusion protrusion 31 to increase the pull-out force. At the same time, the hollow spring piston 103 matches the flanged ring rib 4 on the outer edge of the shock absorber cover 1. When one side of the hollow spring piston 103 deflects or torsional squeezes the shock absorber cover 1, the other side of the hollow spring piston 103 presses the shock absorber cover 1.

[0058] At the same time, in the present invention, the cable buckle 5 is an adhesive buckle, which is used to provide a wiring harness installation point and increase the installation method of the wiring harness.

[0059] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A shock absorber cover for an air spring, characterized in that: It comprises a protective cover body, on which a sleeve sink groove is arranged; on the inner wall of the sleeve sink groove a fastening mechanism is arranged; and the fastening mechanism comprises a plurality of extrusion protrusions which are spaced and parallelly distributed on the inner wall of the sleeve sink groove.

2. The shock absorber cover for an air spring according to claim 1, characterized in that: Each of the extrusion protrusions comprises an extrusion section and a guide section; the guide section is distributed at one end of the extrusion section close to the sleeve sink.

3. The shock absorber cover for an air spring according to claim 2, characterized in that: The horizontal cross section of the extrusion section is an isosceles triangle.

4. The shock absorber cover for an air spring according to claim 1, characterized in that: A guide mechanism is arranged on the outer wall of the protective cover body, and the guide mechanism comprises a plurality of lateral guide ribs; the plurality of lateral guide ribs are evenly distributed at intervals on the outer side surface of the protective cover body.

5. The shock absorber cover for an air spring according to claim 4, characterized in that: Each of the lateral guide ribs is provided with a guide slope.

6. The shock absorber cover for an air spring according to claim 4, characterized in that: The thickness of adjacent lateral guide ribs is different.

7. The shock absorber cover for an air spring according to claim 1, characterized in that: The protective cover body comprises a top plate, an annular side plate is arranged on the top plate, and the top plate and the annular side plate form a box structure with an opening at the lower end.

8. The shock absorber cover for an air spring according to claim 7, characterized in that: The annular side plate is provided with a flanged ring rib at one end away from the top plate; the flanged ring rib is protrudingly arranged on the annular side plate.

9. The shock absorber cover for an air spring according to claim 8, characterized in that: The flanged ring rib is in a frustum-shaped structure, and the outer side surface of the flanged ring rib is an inclined slope; the angle between the inclined slope and the outer side surface of the annular side plate is an obtuse angle.

10. An air spring assembly, characterized in that: It comprises an aluminum sleeve, an airbag, a piston and a shock absorber; the shock absorber, piston, airbag and aluminum sleeve are coaxially arranged in sequence; the shock absorber is provided with a shock absorber cover for the gas spring as claimed in any one of claims 1 to 9; the aluminum sleeve is provided with a cable arranging buckle for arranging cables.

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