CN214999004U

CN214999004U - Novel rubber noise reduction structure

Info

Publication number: CN214999004U
Application number: CN202121407375.1U
Authority: CN
Inventors: 李慧峰
Original assignee: Jiangsu Luoshi Vibration Control Co ltd
Current assignee: Jiangsu Luoshi Vibration Control Co ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2021-12-03
Anticipated expiration: 2031-06-24

Abstract

The utility model discloses a novel rubber noise reduction structure, which comprises an inner core and an outer tube; a rubber block is arranged between the inner core and the outer pipe; the lower end of the inner core is connected with a limiting plate; a plurality of protruding collision blocks are arranged at two ends of the rubber block; the collision block is provided with a plurality of small salient points with sharp ends. The utility model discloses a position setting's that the limiting plate and hit the piece are connected most advanced little bump, satisfying product property ability, assembly space and not promoting under the condition of production manufacturing cost, reduced and hit a noise impact, guaranteed the original characteristic of product simultaneously.

Description

Novel rubber noise reduction structure

Technical Field

The utility model relates to a novel rubber noise reduction structure belongs to automobile shock absorption equipment technical field.

Background

With the rapid development of the automobile industry, the regulations of the noise control inside and outside the automobile, the smoothness and comfort of the automobile, the component coherence of the power transmission system and the requirements of people are increasingly improved. Higher requirements are also put on the NVH of the automobile. In the past, when the rubber suspension or the collision block of the bushing is impacted by a large road surface or excited by other factors, the bushing of the auxiliary frame directly collides with a vehicle body or a limit position to generate obvious collision noise. Conventional subframe bushing configurations are generally shown in FIG. 1. The inner core I11 and the outer tube I22 are bonded together through rubber I33 by high-temperature vulcanization; the first limiting plate 44 is connected with the first inner core 11 through riveting to form a complete auxiliary frame bushing; the bush passes through the frock, and the sub vehicle frame is impressed in the interference, and the rethread bolt passes the inner core, locks the inner core on the automobile body, finally accomplishes the installation of sub vehicle frame bush. The subframe bushing plays an important role in noise protection across the chassis NVH.

The vibration isolation requirement of the auxiliary frame is that when the relative displacement of the auxiliary frame and the vehicle body is small, lower rigidity is provided, and the hollow structure is correspondingly made by rubber. When the displacement is large, the relative displacement between the subframe and the vehicle body is to be restricted. Corresponding special-shaped structures can be made on the outer tube and the inner core to limit the extreme displacement in the front-back direction and the left-right direction. The up-down jumping direction is generally limited by the collision block, the vehicle body and the limiting plate I4 in the up-down direction. The structure can meet the requirement of rigidity comfort provided by a client under the common condition, but the auxiliary frame generated under the larger excitation jumps up and down, so that the collision noise between the collision block and the limit position becomes a new problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

To the problem that above-mentioned prior art exists, the utility model provides a novel structure of making an uproar falls in rubber to solve above-mentioned technical problem.

In order to realize the purpose, the utility model discloses a technical scheme is: a novel rubber noise reduction structure comprises an inner core and an outer tube; a rubber block is arranged between the inner core and the outer pipe; the lower end of the inner core is connected with a limiting plate; a plurality of protruding collision blocks are arranged at two ends of the rubber block; the collision block is provided with a plurality of small salient points with sharp ends.

Further, the inner core and the outer pipe are bonded together through a rubber block by high-temperature vulcanization.

Through adopting above-mentioned technical scheme for inner core, outer tube and rubber block three connect stably, are difficult to drop.

Further, the limiting plate is connected with the inner core through riveting.

Through adopting above-mentioned technical scheme, the limiting plate can be fine with inner core fixed connection, can not take place to drop or not hard up problem, and dismantle comparatively portably.

Furthermore, the arc-shaped inner side of the rubber block is provided with an arc-shaped groove at two sides of the inner core.

Through adopting above-mentioned technical scheme, make horizontal shock attenuation effect more obvious under the effect of arc wall.

Furthermore, a plurality of U-shaped grooves are formed in the groove face, close to the outer side, of the arc-shaped groove.

Through adopting above-mentioned technical scheme, can strengthen the damping performance of rubber through the setting in a plurality of U type grooves.

Furthermore, two arc-shaped square grooves are formed in two sides of the lower end of the central portion of the inner core.

Through adopting above-mentioned technical scheme, can make the convenient and limiting plate riveting of inner core connecting piece.

Furthermore, the small salient points at the tips are uniformly arranged on the arc-shaped collision blocks in an arc shape and are uniformly arranged according to 5-8 hemispherical salient points with the diameter of 1mm per square centimeter.

By adopting the technical scheme, the collision block is in contact with the limit block through the small salient point structure at the tip of the collision block at the initial contact stage, so that the collision block is excessively smoother when bearing impact, the rigidity change is more flexible, and the noise is reduced. The number of the convex points is preferably 5 to 8 hemispherical convex points with the diameter of 1mm per square centimeter. The number of the salient points is too large, so that the rigidity curve can enter the nonlinear section more quickly, and the noise can not be effectively reduced due to too small number of the salient points.

The utility model has the advantages that: the utility model discloses a position setting's that the limiting plate and hit the piece are connected most advanced little bump, satisfying product property ability, assembly space and not promoting under the condition of production manufacturing cost, reduced and hit a noise impact, guaranteed the original characteristic of product simultaneously.

Drawings

FIG. 1 is a schematic structural diagram of an original rubber suspension;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic cross-sectional view of the structure of the present invention;

fig. 4 is a schematic view of the surface structure of the bump of the present invention.

In the figure: 1. the device comprises an inner core, 11, a first inner core, 12, an arc square groove, 2, an outer tube, 22, a second outer tube, 3, a rubber block, 31, an arc groove, 311, a U-shaped groove, 32, a collision block, 321, a tip small salient point, 33, a first rubber, 4, a limiting plate, 44 and a first limiting plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail through the accompanying drawings and embodiments. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention.

As shown in fig. 2, 3 and 4, a novel rubber noise reduction structure is characterized in that the noise reduction structure comprises an inner core 1 and an outer tube 2; a rubber block 3 is arranged between the inner core 1 and the outer tube 2; the lower end of the inner core 1 is connected with a limiting plate 4; a plurality of protruding collision blocks 32 are arranged at two ends of the rubber block 3; the bump block 32 is provided with a plurality of small pointed protrusions 321.

In the preferred embodiment, the inner core 1 and the outer tube 2 are bonded together by the rubber block 3 through high-temperature vulcanization.

Preferably, the limiting plate 4 is connected to the core 1 by riveting.

In the preferred embodiment, the arc-shaped inner side of the rubber block 3 is provided with an arc-shaped groove 31 on each side of the inner core 1.

In this embodiment, preferably, a plurality of U-shaped grooves 311 are disposed on the outer side of the arc-shaped groove 31.

In the preferred embodiment, two arc-shaped square grooves 12 are arranged on two sides of the lower end of the central part of the inner core 1.

In the preferred embodiment, the small pointed protrusions 321 are uniformly arranged on the arc-shaped bump 32 in an arc shape, and are uniformly arranged according to the hemispherical protrusions with the diameter of 1mm in the range of 5-8 per square centimeter.

The technical scheme of the utility model a new block structural scheme that hits is provided, hits block 32 and limiting plate 4 and is contacting through hitting the most advanced little bump 321 structure of block at the initial stage of contact, makes to hit block 32 excessively more in the same direction as smooth when bearing the impact, and rigidity change is more gentle and agreeable, the production of noise abatement. The number of the convex points is preferably 5 to 8 hemispherical convex points with the diameter of 1mm per square centimeter. The number of the salient points is too large, so that the rigidity curve can enter the nonlinear section more quickly, and the noise can not be effectively reduced due to too small number of the salient points.

The utility model has the advantages that: the impact noise of the collision block is reduced under the conditions of meeting the product performance and the assembly space and not improving the production and manufacturing cost, and the original characteristics of the product are ensured.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.

Claims

1. A novel rubber noise reduction structure is characterized by comprising an inner core (1) and an outer tube (2); a rubber block (3) is arranged between the inner core (1) and the outer pipe (2); the lower end of the inner core (1) is connected with a limiting plate (4); a plurality of protruding collision blocks (32) are arranged at the two ends of the rubber block (3); the collision block (32) is provided with a plurality of small salient points (321) with pointed ends.

2. A novel rubber noise reducing structure according to claim 1, characterized in that the inner core (1) and the outer tube (2) are bonded together by high temperature vulcanization of the rubber block (3).

3. A novel rubber noise reduction structure according to claim 1, characterized in that the limiting plate (4) is connected with the inner core (1) by riveting.

4. A novel rubber noise reduction structure according to claim 1, characterized in that the arc-shaped inner side of the rubber block (3) is provided with an arc-shaped groove (31) at two sides of the inner core (1).

5. A novel rubber noise reduction structure according to claim 4, characterized in that a plurality of U-shaped grooves (311) are arranged on the outer groove surface of the arc-shaped groove (31).

6. A novel rubber noise reduction structure according to claim 1, characterized in that two arc-shaped square grooves (12) are arranged on two sides of the lower end of the central part of the inner core (1).

7. A novel rubber noise reduction structure as claimed in claim 1, wherein the small pointed protrusions (321) are uniformly arranged on the arc-shaped collision block (32) in an arc shape, and are uniformly arranged according to 5-8 hemispherical protrusions with a diameter of 1mm per square centimeter.