Pillar assembly

Abstract

The utility model discloses a pillar assembly, including pillar body, brake component, mount and seal cover unit, the pillar body is stepped shaft structure, the pillar body is sleeved with brake component and mount in proper order, the upper end of brake component forms boss, the boss forms plug-in fit with the recess on mount, the boss and pillar body are coaxial. The shock absorber has the beneficial effect of solving the problem that the shock absorber cannot release or limit the applied torsional force and deflection force.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle production technical field especially relates to a kind of pillar assembly. BACKGROUND

[0002] With the popularization of vehicles, people's requirements for vehicle comfort and controllability are also higher and higher, so air spring shock absorber suspension system is more and more widely used.

[0003] But the vehicle in the steering and bumpy road driving state, there will be part of torsional force and yaw force through the knuckle to be transmitted to the shock absorber, causing the rotation and yaw of the shock absorber relative to the air spring, however, the current air spring structure cannot effectively limit these torsional force and yaw force through the tight fit between the shock absorber and the air spring piston, and then cause the friction or extrusion between the bladder and the piston and the positioning ring, produce abnormal sound, affect the performance of air spring, long-term existence of these problems will reduce the service life of air spring, and the comfort of driving will also be affected.

[0004] The information disclosed in this BACKGROUND section is only for the purpose of increasing the understanding of the background of the present utility model and should not be regarded as an acknowledgment or any form of suggestion that this information constitutes prior art. SUMMARY

[0005] The technical problem to be solved by the utility model is how to solve the problem that the air spring shock absorber cannot release or limit the applied torsional force and yaw force.

[0006] The utility model solves the above technical problems by the following technical means:

[0007] The utility model requires protection of a kind of pillar assembly, including pillar body, brake assembly, mounting seat and capping unit, wherein, brake assembly and mounting seat are sequentially sleeved on the pillar body, and the top end of the pillar body is fixed by capping unit;

[0008] It also includes torsion unit and deflection unit, and is arranged between brake assembly and mounting seat, wherein, torsion unit is configured to provide the freedom of relative rotation between mounting seat and extension around the axis of the pillar body;Deflection unit is configured to provide the freedom of relative swing between mounting seat and extension along the radial direction of the pillar body.

[0009] Preferably, the upper end of the brake assembly forms a boss, and the boss and the groove formed on the mounting seat constitute a plug-in fit, wherein the boss is coaxial with the pillar body;

[0010] The support body located between the groove and the boss is coaxially fitted with a torsion unit. The stationary ring of the torsion unit is connected to the lower surface of the mounting base, and the moving ring of the torsion unit is in contact with the upper surface of the braking assembly. The mounting base and the cover unit do not interfere with each other, and the braking assembly and the mounting base do not interfere with each other.

[0011] Preferably, the torsion unit includes a bushing and a plane bearing. The bushing is coaxially sleeved on the support body, and the plane bearing is coaxially mounted on the bushing. The upper ring of the plane bearing is connected to the groove, and the lower ring of the plane bearing is mounted on the boss. The upper ring of the plane bearing is the stationary ring of the torsion unit, and the lower ring of the plane bearing is the moving ring of the torsion unit.

[0012] Preferably, the bottom outer edge of the bushing is provided with a flange, the plane bearing is coaxially sleeved with the bushing, and the lower ring of the plane bearing is connected to the flange. The lower surface of the bushing abuts against the boss, and the upper surface of the bushing abuts against the lower surface of the cover unit. There is a gap between the outer wall of the cover unit and the bushing and the inner wall of the upper ring of the plane bearing and the mounting seat. There is also a gap between the outer wall of the lower ring of the plane bearing, the bushing and the brake assembly and the inner wall of the mounting seat.

[0013] Preferably, the deflection unit is a vibration isolation block, and the mounting base is filled with vibration isolation blocks radially.

[0014] Preferably, the sealing unit includes a sealing cover body and a nut. The top of the support body passes through the sealing cover body, the bottom of the sealing cover body is embedded in the mounting port of the mounting base, and the sealing cover body abuts against the top of the bottom bushing of the sealing cover body. The top of the sealing cover body abuts against the nut, and the nut is threadedly engaged with the top of the support body.

[0015] Preferably, the sealing unit also includes a rubber ring, which is provided at the outer edge of the top of the sealing cover body, and the diameter of the rubber ring is larger than the diameter of the installation opening.

[0016] Preferably, the support body has a stepped shaft structure, the braking component passes through the support body from top to bottom, and the boss abuts against the shoulder of the support body. A sealing ring is provided between the support body and the braking component.

[0017] Preferably, a guide sleeve is fitted on the bottom side of the outer wall of the braking assembly, and a snap-fit ​​unit is provided along the radial direction of the support body at the contact surface between the braking assembly and the guide sleeve.

[0018] Preferably, the snap-fit ​​unit includes a snap-fit ​​groove and a snap-fit ​​block. The outer wall of the braking assembly has a snap-fit ​​block protruding radially and / or a snap-fit ​​groove recessed, and the snap-fit ​​block or snap-fit ​​groove cooperates with another snap-fit ​​groove recessed and / or another snap-fit ​​block protruding on the inner wall of the guide assembly.

[0019] The advantages of this utility model are:

[0020] 1. By setting up torsion and deflection units, the braking assembly and the mounting base can generate relative rotational and relative swing degrees of freedom. This can release the torsional and swing forces generated between the braking assembly and the mounting base, reduce friction and collision caused by torsion and swing due to rigid connection, eliminate abnormal noise, and improve the overall lifespan of the support.

[0021] Second, by setting a plane bearing to bear the axial load, direct friction between the brake assembly and the mounting base is prevented. This ensures that the brake assembly and the mounting base can make flexible relative torsional movements, while also reducing the wear of the shaft diameters of the brake assembly, the mounting base and the support body. This improves the stability and reliability of the machinery and also eliminates abnormal noise.

[0022] Furthermore, a bushing is provided for fitment. The bushing is preferably a flanged bushing, that is, a flange is provided on the outer edge of the bottom of the bushing. First, it serves as a limit for the plane bearing. Second, the top of the bushing is higher than the mounting seat part that contacts the upper surface of the plane bearing, so that there is a gap between the mounting seat and the cover unit along the axial direction of the support body. This ensures that when the cover unit is fixed to the support body, it will not crush the plane bearing along the axial direction of the support body. In addition, there is a gap between the outer wall of the cover unit and the bushing and the upper ring of the plane bearing and the inner wall of the mounting seat. There is also a gap between the lower ring of the plane bearing, the bushing and the outer wall of the braking assembly and the inner wall of the mounting seat. This allows the mounting seat to become a part that can independently rotate around the axis of the support body relative to the braking assembly through the plane bearing, and there will be no friction or collision with the outer edge of the braking assembly during rotation.

[0023] Third, by setting vibration isolation blocks, a certain amount of vibration transmitted to the mounting base can be absorbed and mitigated, as well as the sway torque transmitted to the support body can be absorbed and released.

[0024] Fourth, by setting a rubber ring with a diameter larger than the installation opening diameter, the internal rubber particles of the mounting base can be prevented from falling out during use. It can also prevent other devices connected to the mounting base from making abnormal noises through a buffering effect.

[0025] 5. By setting a sealing ring, preferably an O-ring, the sealing performance of the contact surface between the braking component and the support body is enhanced.

[0026] 6. A snap-fit ​​unit is set between the braking assembly and the guide sleeve, so that the guide sleeve is directly snapped onto the lower end of the braking assembly. The original internal support ring is eliminated, and the bladder and bladder guide sleeve are in smooth contact. This ensures a stable connection, simplifies the manufacturing process, and reduces costs. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of a support assembly according to Embodiment 1 of this utility model;

[0028] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0029] Figure 3 This is a schematic diagram of a support assembly in Embodiment 2 of this utility model.

[0030] 1. Support body; 2. Braking assembly; 20. Boss; 3. Mounting base; 30. Groove; 4. Cover unit; 41. Sealing cover body; 42. Nut; 43. Rubber ring; 5. Torsion unit; 51. Bushing; 52. Surface bearing; 6. Deflection unit; 7. Sealing ring; 8. Snap-fit ​​unit; 9. Guide kit; a. Friction-reducing pad. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] Example 1

[0033] See Figure 1 and Figure 2 This embodiment claims protection for a support assembly, including a support body 1, a braking component 2, a mounting base 3, and a cover unit 4. The support body 1 has a stepped shaft structure. The braking component 2 and the mounting base 3 are sequentially fitted on the support body 1. A boss 20 is formed at the upper end of the braking component 2. The boss 20 and the groove 30 formed on the mounting base 3 form an insertion fit. The boss 20 is coaxial with the support body 1.

[0034] Furthermore, the braking component 2 passes through the support body 1 from top to bottom, and the boss 20 abuts against the shoulder of the support body 1. A sealing ring 7 is provided between the support body 1 and the braking component 2. By providing the sealing ring 7, preferably an O-ring, the sealing performance of the contact surface between the braking component 2 and the support body 1 is enhanced.

[0035] It also includes a torsion unit 5, which is arranged between the brake assembly 2 and the mounting base 3. The torsion unit 5 is configured to provide the mounting base 3 and the extension with a degree of freedom to rotate relative to each other about the axis of the support body 1. The support body 1 located between the groove 30 and the boss 20 is coaxially fitted with the torsion unit 5. The stationary ring of the torsion unit 5 is connected to the lower surface of the mounting base 3, and the moving ring of the torsion unit 5 is in contact with the upper surface of the brake assembly 2.

[0036] Furthermore, the torsion unit 5 includes a bushing 51 and a plane bearing 52. The bushing 51 is coaxially sleeved on the support body 1, and the plane bearing 52 is installed on the bushing 51. The upper ring of the plane bearing 52 is connected to the groove 30, and the lower ring of the plane bearing 52 is installed on the boss 20. The upper ring of the plane bearing 52 is the stationary ring of the torsion unit 5, and the lower ring of the plane bearing 52 is the moving ring of the torsion unit 5.

[0037] Furthermore, a flange is provided on the bottom outer edge of the bushing 51, and the plane bearing 52 is coaxially sleeved on the bushing 51. The lower ring of the plane bearing 52 is connected to the flange, the lower surface of the bushing 51 abuts against the boss 20, and the upper surface of the bushing 51 abuts against the lower surface of the cover unit 4.

[0038] It is worth noting that by setting the plane bearing 52 to bear the axial load, direct friction between the brake assembly 2 and the mounting seat 3 is prevented. This ensures that the brake assembly 2 and the mounting seat 3 can generate flexible relative torsional movement, while also reducing the wear of the shaft diameters of the brake assembly 2, the mounting seat 3 and the support body 1, improving the stability and reliability of the machine, and also achieving a shock absorption effect.

[0039] Furthermore, a bushing 51 is provided for engagement. The bushing 51 is preferably a flanged bushing, that is, a flange is provided on the outer edge of the bottom of the bushing 51. Firstly, it serves as a limit for the plane bearing 52. Secondly, the top of the bushing 51 is higher than the part of the mounting seat 3 that contacts the upper ring of the plane bearing 52, so that there is a gap between the mounting seat 3 and the cover unit 4 along the axial direction of the support body 1. This ensures that when the cover unit 4 is fixed to the support body 1, it will not crush the plane bearing 52 along the axial direction of the support body 1. In addition, there is a gap between the outer wall of the cover unit 4 and the bushing 51 and the upper ring of the plane bearing 52 and the inner wall of the mounting seat 3. There is also a gap between the lower ring of the plane bearing 52, the bushing 51 and the outer wall of the brake assembly 2 and the inner wall of the mounting seat 3. This allows the mounting seat 3 to become a part that can independently rotate around the axis of the support body 1 relative to the brake assembly 2 through the plane bearing 52. During rotation, there will be no friction or collision with the outer edge of the brake assembly 2.

[0040] It also includes a deflection unit 6, which is arranged between the braking assembly 2 and the mounting base 3. The deflection unit 6 is configured to provide the mounting base 3 and the extension with a degree of freedom to swing relative to each other in the radial direction of the support body 1. The deflection unit 6 is a vibration isolation block, and the mounting base 3 is filled with vibration isolation blocks in the radial direction.

[0041] Furthermore, the top of the support body 1 is fixed by the sealing unit 4, which includes a sealing cover body 41 and a nut 42. The top of the support body 1 passes through the sealing cover body 41, and the bottom of the sealing cover body 41 is embedded in the mounting opening of the mounting base 3, reaching the top of the bottom bushing 51 of the sealing cover body 41 for abutment. The top of the sealing cover body 41 abuts against the nut 42, and the nut 42 is threadedly engaged with the top of the support body 1.

[0042] Furthermore, the sealing unit 4 also includes a rubber ring 43. A rubber ring 43 is provided at the outer edge of the top of the sealing cover body 41. The diameter of the rubber ring 43 is larger than the diameter of the installation opening. By providing the rubber ring 43 and ensuring that its diameter is larger than the diameter of the installation opening, the internal rubber particles of the mounting base 3 can be prevented from falling out during use. It can also prevent other devices connected to the mounting base 3 from making abnormal noises through a buffering effect.

[0043] This embodiment, by setting the torsion unit 5 and the deflection unit 6, allows the braking assembly 2 and the mounting base 3 to generate relative rotational and relative swing degrees of freedom. This can release or effectively limit the torsional and swing forces generated between the braking assembly 2 and the mounting base 3, reduce friction and collision caused by torsion and swing due to rigid connection, eliminate abnormal noise, and improve the service life of the shock absorber support.

[0044] In this embodiment, a snap-fit ​​unit 8 is provided between the braking assembly 2 and the guide sleeve 9, so that the guide sleeve 9 is directly snapped onto the lower end of the braking assembly 2. The original internal support ring is eliminated, and the bladder and the bladder guide sleeve are made to make smooth contact, which not only ensures stable connection, but also simplifies the manufacturing process and reduces costs.

[0045] Example 2

[0046] See Figure 3 The difference between this embodiment and embodiment one is that the contact surface between the mounting base 3 and the braking component 2 is a plane, the top of the braking component 2 is a plane, and the cover unit 4, the mounting base 3, the plane bearing 52 and the bushing 51 are sequentially fitted on the support body 1 from top to bottom, and the bottom end of the mounting base 3 is also a plane. At this time, friction-reducing pads a are provided on the surfaces close to the braking component 2 and the bushing 51, and friction-reducing pads a are provided on the surfaces close to the cover unit 4 and the mounting base 3, in order to cope with some extreme working conditions.

[0047] Example 3

[0048] Based on Embodiment 1, in this embodiment, a guide sleeve 9 is fitted on the bottom side of the outer wall of the braking component 2. A snap-fit ​​unit 8 is provided radially along the support body 1 at the contact surface between the braking component 2 and the guide sleeve 9. The snap-fit ​​unit 8 includes a slot and a block. The outer wall of the braking component 2 is radially provided with a block and / or a slot. The block or slot cooperates with another slot and / or a block that is recessed on the inner wall of the guide sleeve 9.

[0049] Example 4

[0050] Based on Embodiments 1 and 2, this embodiment provides a specific application scenario for the strut assembly. Specifically, when the strut assembly is applied to the air spring shock absorber strut in a vehicle suspension system, the strut body 1 is a piston rod, the top of the mounting base 3 is connected to the vehicle chassis or the lower mounting base, and the braking assembly 2 is the upper air chamber. When the vehicle is in motion, under the conditions of turning and driving on bumpy roads, some torsional force and yaw force will be transmitted to the shock absorber, causing the shock absorber to twist and yaw. Through the torsion unit 5 and the deflection unit 6, while ensuring the normal operation of the shock absorber, the torsional force and yaw force transmitted to the mounting base 3 can be released or limited, avoiding friction or compression between the bladder below the braking assembly 2, i.e., the guide kit 9, and the positioning ring on the braking assembly 2, which would generate abnormal noise and thus affect the service life of the entire device.

[0051] In fact, as vehicles become more widespread, people have increasingly higher demands for vehicle comfort and handling. However, when a vehicle is turning or driving on bumpy roads, some torsional and yaw forces are transmitted to the shock absorbers through the fork.

[0052] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model 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. Such 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 this utility model.

Claims

1. A strut assembly, characterized in that, It includes a support body (1), a braking assembly (2), a mounting base (3) and a cover unit (4), wherein the braking assembly (2) and the mounting base (3) are sequentially fitted on the support body (1), and the top of the support body (1) is fixed by the cover unit (4); It also includes a torsion unit (5) and a deflection unit (6), both arranged between the braking assembly (2) and the mounting base (3). The torsion unit (5) is configured to provide a degree of freedom for relative rotation between the mounting base (3) and the extension about the axis of the support body (1). The deflection unit (6) is configured to provide a degree of freedom for relative swing between the mounting base (3) and the extension along the radial direction of the support body (1).

2. A strut assembly according to claim 1, characterized in that, A boss (20) is formed at the upper end of the braking assembly (2), and the boss (20) and the groove (30) formed on the mounting base (3) form a plug-in fit, wherein the boss (20) is coaxial with the support body (1); The support body (1) located between the groove (30) and the boss (20) is coaxially fitted with a torsion unit (5). The stationary ring of the torsion unit (5) is connected to the lower surface of the mounting base (3), and the moving ring of the torsion unit (5) is in contact with the upper surface of the braking assembly (2). The mounting base (3) and the cover unit (4) do not interfere with each other, and the braking assembly (2) and the mounting base (3) do not interfere with each other.

3. A strut assembly according to claim 1, characterized in that, The torsion unit (5) includes a bushing (51) and a plane bearing (52). The bushing (51) is coaxially sleeved on the support body (1). The plane bearing (52) is coaxially mounted on the bushing (51). The upper ring of the plane bearing (52) is connected to the groove (30). The lower ring of the plane bearing (52) is mounted on the boss (20). The upper ring of the plane bearing (52) is the stationary ring of the torsion unit (5). The lower ring of the plane bearing (52) is the moving ring of the torsion unit (5).

4. A strut assembly according to claim 1, characterized in that, A flange is provided on the bottom outer edge of the bushing (51), and the bushing (51) is coaxially fitted with the plane bearing (52). The lower ring of the plane bearing (52) is connected to the flange. The lower surface of the bushing (51) abuts against the boss (20), and the upper surface of the bushing (51) abuts against the lower surface of the cover unit (4). There is a gap between the outer wall of the cover unit (4) and the bushing (51) and the upper ring of the plane bearing (52) and the inner wall of the mounting seat (3). There is a gap between the lower ring of the plane bearing (52), the bushing (51) and the brake assembly (2) and the inner wall of the mounting seat (3).

5. A strut assembly according to claim 1, characterized in that, The deflection unit (6) is a vibration isolation block, and the mounting base (3) is filled with vibration isolation blocks radially.

6. A strut assembly according to claim 1, characterized in that, The sealing unit (4) includes a sealing cover body (41) and a nut (42). The top of the support body (1) passes through the sealing cover body (41). The bottom of the sealing cover body (41) is embedded in the mounting port of the mounting base (3) and abuts against the top of the bottom bushing (51) of the sealing cover body (41). The top of the sealing cover body (41) abuts against the nut (42), and the nut (42) is threadedly engaged with the top of the support body (1).

7. A strut assembly according to claim 1, characterized in that, The sealing unit (4) also includes a rubber ring (43). A rubber ring (43) is provided at the outer edge of the top of the sealing cover body (41). The diameter of the rubber ring (43) is larger than the diameter of the installation opening.

8. A strut assembly according to claim 1, characterized in that, The support body (1) has a stepped shaft structure. The braking component (2) passes through the support body (1) from top to bottom and abuts against the shoulder of the support body (1) at the boss (20). A sealing ring (7) is provided between the support body (1) and the braking component (2).

9. A strut assembly according to claim 1, characterized in that, A guide sleeve (9) is fitted on the bottom side of the outer wall of the braking assembly (2), and a snap-fit ​​unit (8) is provided along the radial direction of the support body (1) at the contact surface between the braking assembly (2) and the guide sleeve (9).

10. A strut assembly according to claim 1, characterized in that, The snap-fit ​​unit (8) includes a snap-fit ​​groove and a snap-fit ​​block. The outer wall of the braking assembly (2) is radially protruding with a snap-fit ​​block and / or recessed with a snap-fit ​​groove. The snap-fit ​​block or snap-fit ​​groove engages with another snap-fit ​​groove recessed and / or another snap-fit ​​block protruding on the inner wall of the guide assembly (9).

Images