Vibration absorber bushing and back door vibration absorber assembly

Abstract

The utility model discloses a vibration absorber bushing and a back door vibration absorber assembly, and the vibration absorber bushing comprises an outer support sleeve with an annular structure, at least one bolt bushing arranged in the outer support sleeve, and a rubber body which is integrally formed between the outer support sleeve and each bolt bushing through a vulcanization process, the rubber body comprises a bushing mounting seat, an outer sleeve connecting cylinder part and a connecting part formed between the bushing mounting seat and the rubber body, and two vibration absorption improving holes oppositely formed in the two sides of the bushing mounting seat are formed in the rubber body connecting part, so that the bushing mounting seat can swing relative to the outer sleeve connecting cylinder part; meanwhile, the rubber body can be made of rubber materials with the hardness ranging from 55 SHA to 60 SHA, the comprehensive performance such as elasticity and durability is at the best level, the stability of the rubber vibration absorption block installed on the outer supporting sleeve can be improved, the vibration absorption performance is further ensured, and the rubber vibration absorption block can be made of rubber materials with the hardness ranging from 55 SHA to 60 SHA. And the two vibration absorption improving holes also realize the lightweight design.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile parts, and specifically relates to a vibration absorber bushing and back door vibration absorber assembly. BACKGROUND

[0002] The automobile back door vibration absorber is a device for reducing the vibration and noise of a back door, usually installed between the back door (such as a trunk door) and the vehicle body. The automobile back door vibration absorber has the following three functions:

[0003] 1. Vibration reduction: absorbing the vibration of the back door opening or closing or during driving, preventing abnormal noise.

[0004] 2. Noise reduction: reducing the noise caused by vibration, improving the quietness of the vehicle interior.

[0005] 3. Protection: reducing the impact of the back door on the vehicle body, prolonging the service life of the components.

[0006] Please refer to Figure 1 , which is a back door vibration absorber assembly designed by the applicant, the rubber vibration absorbing block 5 is installed on the vibration absorber mounting bracket 4 through the vibration absorber bushing, and the vibration absorber mounting bracket 4 is fixedly connected with the vehicle body. In order to obtain excellent vibration absorption and noise reduction performance, the applicant integrally forms the elastic rubber body 3 between the outer support sleeve 1 of the vibration absorber bushing and each bolt bushing 2 through the vulcanization process. However, the applicant found in the long-term application process that: if the hardness of the rubber body 3 is designed to be larger in order to ensure the service life of the rubber body 3, the elasticity of the rubber body 3 will be smaller, which will eventually make the vibration absorption and noise reduction performance of the back door vibration absorber assembly not ideal; if the hardness of the rubber body 3 is designed to be smaller in order to ensure that the rubber body 3 has larger elasticity, not only the durability of the rubber body 3 is poor and easy to age and break, but also the installation stability of the rubber vibration absorbing block 5 is poor. UTILITY MODEL CONTENTS

[0007] Therefore, the utility model provides a vibration absorber bushing and back door vibration absorber assembly.

[0008] The technical scheme is as follows:

[0009] The first aspect of the present application relates to a vibration absorber bushing, comprising an outer support sleeve in a ring structure, at least one bolt bushing arranged in the outer support sleeve, and a rubber body integrally formed between the outer support sleeve and each bolt bushing through a vulcanization process, the rubber body comprising a bushing mounting seat formed on each bolt bushing, an outer sleeve connecting cylinder portion formed on the inner circumferential surface of the outer support sleeve, and a rubber body connecting portion formed between the bushing mounting seat and the outer sleeve connecting cylinder portion, both ends of the bushing mounting seat and the outer sleeve connecting cylinder portion protrude from the rubber body connecting portion, both ends of the outer sleeve connecting cylinder portion are flush with or lower than the corresponding ends of the outer support sleeve, one end of the bushing mounting seat protrudes from the corresponding end of the bushing mounting seat, and the other end is lower than the corresponding end of the bushing mounting seat, and two vibration absorption improvement holes are arranged on the rubber body connecting portion, opposite to the two sides of the bushing mounting seat.

[0010] With the above vibration absorber bushing, by arranging the vibration absorption improvement holes on both sides of the bushing mounting seat, the bushing mounting seat can swing relative to the outer sleeve connecting cylinder portion, thereby achieving excellent vibration absorption and noise reduction performance of the back door vibration absorber assembly, and the rubber body can be made of rubber material with a hardness of 55-60SHA, which not only has optimal comprehensive performance in elasticity, durability, etc., but also improves the stability of the rubber vibration absorption block mounted on the outer support sleeve, further ensuring the vibration absorption performance, and the two vibration absorption improvement holes also achieve lightweight design.

[0011] In some embodiments, each of the vibration absorption improvement holes is provided with a first anti-collision boss on the side hole wall close to the bushing mounting seat, and each of the vibration absorption improvement holes is provided with a second anti-collision boss opposite to the first anti-collision boss on the side hole wall away from the bushing mounting seat, and each first anti-collision boss has a gap with the corresponding second anti-collision boss.

[0012] In some embodiments, the width of each first anti-collision boss is less than the width of the corresponding second anti-collision boss, and the outer end surface of each first anti-collision boss is an outwardly convex arc surface structure, and the outer end surface of each second anti-collision boss is an inwardly concave arc surface structure.

[0013] In some embodiments, one end of the bushing mounting seat protrudes from the one end surface of the bushing mounting seat, and the other end of each bolt bushing protrudes from the other end surface of the bushing mounting seat and is folded outwardly to form a bolt gasket.

[0014] The second aspect of the present application relates to a back door vibration absorber assembly, a vibration absorber mounting bracket, the vibration absorber bushing described above, and a rubber vibration absorbing block sleeved outside the outer support sleeve, a locking bolt is arranged in each bolt bushing, the head of each locking bolt is in abutment with one end of the bushing mounting seat below the bushing mounting seat, the shank of each locking bolt is outwardly protruding from one end of the bushing mounting seat after passing through the bushing mounting seat, and is screwed on the vibration absorber mounting bracket, so that one end of the bushing mounting seat protruding from the bushing mounting seat is in abutment with the vibration absorber mounting bracket.

[0015] The above back door vibration absorber assembly has all the advantages of the vibration absorber bushing.

[0016] In some embodiments, the vibration absorber mounting bracket is a metal sheet structure, bolt through holes corresponding to the locking bolts are formed in the vibration absorber mounting bracket, and locking nuts corresponding to the bolt through holes are fixedly installed on the side of the vibration absorber mounting bracket away from the rubber vibration absorbing block, the shanks of the locking bolts pass through the corresponding bolt through holes and are screwed in the corresponding locking nuts.

[0017] In some embodiments, a buffer pad between the rubber vibration absorbing block and the vibration absorber mounting bracket is fixedly installed on the side of the vibration absorber mounting bracket close to the rubber vibration absorbing block, and a gap is left between the buffer pad and the rubber vibration absorbing block. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the existing back door vibration absorber assembly;

[0019] Figure 2 It is a structural schematic view of the vibration absorber bushing of the utility model;

[0020] Figure 3 It is a sectional view of the vibration absorber bushing of the utility model;

[0021] Figure 4 It is a structural schematic view of the back door vibration absorber assembly of the utility model;

[0022] Figure 5 It is a sectional view of the back door vibration absorber assembly of the utility model. DETAILED DESCRIPTION

[0023] The utility model is further described below in combination with embodiments and drawings.

[0024] Embodiment 1:

[0025] As shown in Figure 2 and Figure 3 , a vibration absorber bushing mainly comprises an outer support sleeve 1, a rubber body 3, and at least one bolt bushing 2.

[0026] The outer support sleeve 1 and the bolt bushing 2 are both made of metal material and have high structural strength. The outer support sleeve 1 and the bolt bushing 2 are both in cylindrical structure, and the outer support sleeve 1 surrounds the bolt bushing 2. The rubber body 3 is integrally formed between the outer support sleeve 1 and the bolt bushing 2 through vulcanization process, that is, the rubber body 3 is tightly combined with the circumferential inner wall of the outer support sleeve 1 and the circumferential outer wall of the bolt bushing 2. Therefore, the outer support sleeve 1 and the bolt bushing 2 can relatively displace due to the elasticity of the rubber body 3, thereby playing a role of vibration reduction, noise reduction and protection.

[0027] In the embodiment, the rubber body 3 includes a bushing mounting seat 31, an outer sleeve connecting cylinder portion 32 and a rubber body connecting portion 33. The bushing mounting seat 31 is formed on the bolt bushing 2, that is, the bushing mounting seat 31 is tightly combined with the circumferential outer wall of the bolt bushing 2. The outer sleeve connecting cylinder portion 32 is formed on the inner circumferential surface of the outer support sleeve 1, that is, the circumferential outer wall of the outer sleeve connecting cylinder portion 32 is tightly combined with the circumferential inner wall of the outer support sleeve 1. The rubber body connecting portion 33 is formed between the bushing mounting seat 31 and the outer sleeve connecting cylinder portion 32.

[0028] The two ends of the bushing mounting seat 31 and the outer sleeve connecting cylinder portion 32 protrude from the rubber body connecting portion 33, so that the rubber body connecting portion 33 is more easily deformed, thereby playing a better role of vibration reduction, noise reduction and protection. The two ends of the outer sleeve connecting cylinder portion 32 are flush with or lower than the corresponding ends of the outer support sleeve 1, thereby ensuring the stability and reliability of the combination of the two. One end of the bushing mounting seat 31 protrudes from the corresponding end of the bushing mounting seat 31, so that the bushing mounting seat 31 can be supported on the vibration absorber mounting bracket 4. Meanwhile, the other end of the bushing mounting seat 31 is lower than the corresponding end of the bushing mounting seat 31, so that the locking bolt 6 does not protrude from the rubber vibration absorbing block 5, thereby ensuring the vibration absorbing effect of the rubber vibration absorbing block 5 and avoiding interference.

[0029] Most importantly, the rubber body connecting portion 33 is provided with two vibration absorption improvement holes 331 which are oppositely arranged on both sides of the bushing mounting seat 31, so that the bushing mounting seat 31 can swing relative to the outer sleeve connecting cylinder portion 32, thereby making the vibration absorbing and noise reducing performance of the back door vibration absorber assembly excellent. Meanwhile, the rubber body 3 can be made of rubber material with greater hardness, thereby ensuring the durability of the rubber body 3 and preventing aging, improving the stability of the rubber vibration absorbing block 5 installed on the outer support sleeve 1, further ensuring the vibration absorbing performance, and realizing lightweight design of the two vibration absorption improvement holes 331.

[0030] Further, each of the vibration-absorbing holes 331 is provided with a first anti-collision boss 332 on the side hole wall close to the bush mounting seat 31, and is provided with a second anti-collision boss 333 opposite to the first anti-collision boss 332 on the side hole wall away from the bush mounting seat 31, and a gap is left between each first anti-collision boss 332 and the corresponding second anti-collision boss 333, so that when the bush mounting seat 31 swings relative to the outer sleeve connecting cylinder part 32, the swing range is at most the range of the first anti-collision boss 332 and the second anti-collision boss 333, thereby reducing the deformation range of the rubber body 3, prolonging the service life of the product, and avoiding large-area collision of the bush mounting seat 31 when it swings relative to the outer sleeve connecting cylinder part 32, further prolonging the service life of the product.

[0031] Further, the width of each first anti-collision boss 332 is smaller than the width of the corresponding second anti-collision boss 333, so that when a collision occurs, the impact of the collision can be reduced by the deformation of the first anti-collision boss 332, thereby achieving a better vibration-absorbing effect. At the same time, the outer end surface of each first anti-collision boss 332 is an outwardly convex arc surface structure, and the outer end surface of each second anti-collision boss 333 is an inwardly concave arc surface structure, and through the design of the arc surface guide, the first anti-collision boss 332 is more prone to deformation when a collision occurs.

[0032] Further, the width of the outer end surface of the second anti-collision boss 333 is greater than the width of the outer end surface of the first anti-collision boss 332, so that the first anti-collision boss 332 can be better guided to deform when a collision occurs.

[0033] In this embodiment, one end of the bush mounting seat 31 protrudes from the one end surface of the bush mounting seat 31 and is flush with the one end surface of each bolt bush 2, and the other end of each bolt bush 2 protrudes from the other end surface of the bush mounting seat 31 and is folded outwardly to form a bolt washer 21, thereby playing a supporting role when the locking bolt 6 is installed, thereby improving the locking reliability of the locking bolt 6.

[0034] Embodiment 2:

[0035] Please refer to Figures 3-4 A back door vibration absorber assembly, a vibration absorber mounting bracket 4, a rubber vibration absorbing block 5, and the vibration absorber bush of Embodiment 1, wherein the rubber vibration absorbing block 5 is fixedly sleeved outside the outer support sleeve 1, and the vibration absorber bush is installed on the vibration absorber mounting bracket 4 through the locking bolt 6.

[0036] Specifically, the locking bolt 6 is arranged in each bolt bushing 2, the head of each locking bolt 6 abuts against the end of the bushing mounting seat 31 below the bushing mounting seat 31, the screw rod of each locking bolt 6 protrudes out of the end of the bushing mounting seat 31, and is screwed on the vibration absorber mounting bracket 4, at this time, the end of the bushing mounting seat 31 protruding out of the bushing mounting seat 31 abuts against the vibration absorber mounting bracket 4, and the assembly of the back door vibration absorber assembly is completed.

[0037] In the embodiment, the vibration absorber mounting bracket 4 is a metal sheet structure, the vibration absorber mounting bracket 4 is provided with bolt through holes 41 corresponding to the locking bolts 6, and the vibration absorber mounting bracket 4 is fixedly provided with locking nuts 7 corresponding to the bolt through holes 41 on the side away from the rubber vibration absorbing block 5, that is, each locking nut 7 is coaxially arranged in the corresponding bolt through hole 41. Generally, the locking nut 7 is fixed on the vibration absorber mounting bracket 4 by welding process, which is simple and reliable. Therefore, the screw rod of each locking bolt 6 is screwed in the corresponding locking nut 7 after passing through the corresponding bolt through hole 41, which ensures the stability and reliability of locking.

[0038] Further, the vibration absorber mounting bracket 4 is fixedly provided with a buffer pad 8 between the rubber vibration absorbing block 5 and the vibration absorber mounting bracket 4 on the side close to the rubber vibration absorbing block 5, and a gap is left between the buffer pad 8 and the rubber vibration absorbing block 5, so as to provide buffering and support when the rubber vibration absorbing block 5 impacts the vibration absorber mounting bracket 4, protect the rubber vibration absorbing block 5, and prolong the service life.

[0039] The vibration absorber mounting bracket 4 is also provided with a plurality of mounting bolt holes 42, so as to mount the back door vibration absorber assembly on the vehicle body by bolts.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present application, and those skilled in the art can make various similar expressions under the inspiration of the present application without deviating from the purpose and claims of the present application, and such changes fall within the protection scope of the present application.

Claims

1. A vibration absorber bushing, comprising an annular outer support sleeve, at least one bolt bushing disposed within the outer support sleeve, and a rubber body integrally formed between the outer support sleeve and each bolt bushing by a vulcanization process, the rubber body comprising a bushing mounting seat formed on each bolt bushing, an outer connecting sleeve portion formed on the inner circumferential surface of the outer support sleeve, and a rubber body connecting portion formed between the bushing mounting seat and the outer connecting sleeve portion, wherein both ends of the bushing mounting seat and the outer connecting sleeve portion protrude beyond the rubber body connecting portion, both ends of the outer connecting sleeve portion are flush with or lower than the corresponding ends of the outer support sleeve, one end of the bushing mounting seat protrudes beyond the corresponding end of the bushing mounting seat, and the other end is lower than the corresponding end of the bushing mounting seat, characterized in that: The rubber body connection has two vibration-damping holes that are oppositely arranged on both sides of the bushing mounting seat.

2. The vibration absorber bushing according to claim 1, characterized in that: Each of the vibration-damping improvement holes has a first anti-collision protrusion on the side wall near the bushing mounting seat, and a second anti-collision protrusion facing the first anti-collision protrusion on the side wall away from the bushing mounting seat. A gap is left between each first anti-collision protrusion and the corresponding second anti-collision protrusion.

3. The vibration absorber bushing according to claim 2, characterized in that: The width of the first anti-collision protrusion is smaller than the width of the corresponding second anti-collision protrusion. The outer end face of the first anti-collision protrusion is an outwardly convex arc surface structure, and the outer end face of the second anti-collision protrusion is an inwardly concave arc surface structure.

4. The vibration absorber bushing according to claim 1, characterized in that: One end of the bushing mounting base protrudes from one end face of the bushing mounting base and is flush with one end face of each bolt bushing. The other end of each bolt bushing protrudes from the other end face of the bushing mounting base and then folds outward to form a bolt washer.

5. A rear door vibration absorber assembly, characterized in that: The vibration absorber mounting bracket, the vibration absorber bushing as described in any one of claims 1-4, and the rubber vibration absorber block fixedly mounted on the outer support sleeve, each bolt bushing is provided with a locking bolt, the head of each locking bolt abuts against the end of the bushing mounting seat that is lower than the bushing mounting seat, and the screw of each locking bolt protrudes outward from the bushing mounting seat and protrudes from the end of the bushing mounting seat before being tightened onto the vibration absorber mounting bracket, so that the end of the bushing mounting seat that protrudes from the bushing mounting seat abuts against the vibration absorber mounting bracket.

6. The rear door vibration absorber assembly according to claim 5, characterized in that: The vibration absorber mounting bracket is a thin metal plate structure. The vibration absorber mounting bracket has bolt holes corresponding to each locking bolt. On the side of the vibration absorber mounting bracket away from the rubber vibration absorber block, a locking nut corresponding to each bolt hole is fixedly installed. After the screw of each locking bolt passes through the corresponding bolt hole, it is tightened in the corresponding locking nut.

7. The rear door vibration absorber assembly according to claim 5, characterized in that: A buffer pad is fixedly installed on the side of the vibration absorber mounting bracket near the rubber vibration absorber block, between the rubber vibration absorber block and the vibration absorber mounting bracket, with a gap between the buffer pad and the rubber vibration absorber block.

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