Dynamic vibration absorber with soft limiting function

Abstract

The utility model discloses a dynamic vibration absorber with a soft limiting function. The dynamic vibration absorber comprises a mass block, a shell, a rubber part and a bandage. The two ends of the mass block are fixed to the shell through arranged rubber parts, and the mass block and the shell are fixed through additionally-arranged bandages. The dynamic vibration absorber with the soft limiting function is simple in structure, reasonable in design and convenient to assemble.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts, and more specifically, to a dynamic vibration absorber with soft limit. Background Art

[0002] A car dynamic shock absorber is a mechanical device used to reduce vehicle vibration; it uses a resonance system to absorb the vibration energy of an object to reduce the vibration of the object.

[0003] The common dynamic vibration absorbers currently on the market usually include an upper shell and a lower shell, which are assembled to form an assembly space, and then the mass block is installed in the assembly space to realize the assembly of the mass block; therefore, it will take up a large space; and dynamic vibration absorbers are usually patch-type products, which are added only when NVH problems occur. Therefore, the vehicle may not reserve enough space for all types of dynamic vibration absorbers in the initial design; therefore, the dynamic vibration absorber is required to provide sufficient mass while minimizing the space occupancy; at the same time, the connection between the upper shell and the lower shell needs to be assembled together with bolts and gaskets, there are many parts, the assembly process is complicated, and there is a risk of missing bolts and gaskets. Summary of the invention

[0004] The utility model overcomes the shortcomings of the prior art and provides a dynamic vibration absorber with soft limit which has simple structure, reasonable design and convenient assembly.

[0005] The technical solution of the utility model is as follows:

[0006] A dynamic vibration absorber with soft limit comprises a mass block, a shell, a rubber piece and a bandage; two ends of the mass block are fixed to the shell by means of arranged rubber pieces, and the mass block and the shell are fixed by means of an additional bandage.

[0007] Furthermore, the number of bandages is at least two.

[0008] Furthermore, the material of the bandage meets FZ / T 50543 and DIN EN ISO 2076 standards.

[0009] Furthermore, the breaking force of the bandage must be greater than 3000N; the bandage can withstand a pulling speed of 50mm / min at room temperature.

[0010] Furthermore, a through hole for placing a bandage is provided on the shell.

[0011] Furthermore, the shell as a whole includes an end portion for fixing and positioning the vibration absorber and an intermediate body for accommodating the mass block; the end portion is connected to the intermediate body, and the vertical distance between the end portion and the center point of the mass block is closer than that between the intermediate body.

[0012] Furthermore, the end portion is integrally formed with the intermediate body.

[0013] Furthermore, a racetrack-shaped hole is provided on the portion of the shell where the mass block is placed.

[0014] Furthermore, the mass block is in the shape of a rectangular parallelepiped as a whole, and rubber pieces are sleeved on both ends of the mass block; and a stabilizing structure is arranged on the outer side of the rubber piece away from the mass block.

[0015] Furthermore, the stable structure includes a cylindrical support angle fixed in the longitudinal direction of the mass block, a hemispherical contact point is arranged on the side of the rubber member away from the shell, and a semi-cylindrical contact strip is arranged on the side of the rubber member close to the shell.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] The utility model has a simple structure, reasonable design, reliable structure and convenient assembly. By setting a bandage for limiting, the traditional structure has many parts, complicated assembly process and high cost. The new structure has fewer parts and only needs two bandages to limit the large vibration of the mass block, improve the life of the dynamic vibration absorber, and prevent the mass block from falling out and causing functional loss. Compared with the traditional structure, the new structure greatly reduces the number of sub-components, and the manufacturing process is simple, which greatly reduces the cost of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0019] Figure 1 It is a schematic diagram of the traditional structure;

[0020] Figure 2 It is a schematic diagram of the structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the rubber member of the utility model;

[0022] Figure 4 This is a schematic diagram of the rubber member of the utility model from another perspective;

[0023] Figure 5 It is a schematic diagram of the housing of the utility model;

[0024] Figure 6 This is a schematic diagram of the housing of the present invention from another viewing angle.

[0025] Labels in the figure: mass block 1, shell 2, through hole 21, end 22, intermediate body 23, racetrack-shaped hole 24, rubber part 3, stabilizing structure 31, cylindrical supporting angle 32, hemispherical contact 33, semi-cylindrical contact strip 34, bandage 4, felt 5. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0027] like Figures 2 to 6 As shown in FIG. 1 , a dynamic vibration absorber with soft limit includes a mass block 1, a shell 2, a rubber member 3 and a bandage 4. The two ends of the mass block 1 are fixed to the shell 2 by the rubber member 3, and the mass block 1 and the shell 2 are fixed by the bandage 4. By setting the bandage for limit, the problem of Figure 1 The problem of many parts in the traditional structure shown in the figure is solved, especially the shell 2 is reduced, which greatly reduces the complexity of the assembly process and the cost.

[0028] Preferably, the number of bandages 4 is at least two. Figure 1 Generally, two bandages are sufficient. The new structure has fewer overall parts, and only two bandages are needed to limit the large vibration of the mass block 1, increase the life of the dynamic vibration absorber, and prevent the loss of function caused by the mass block 1 coming out. Among them, the material of the bandage 4 meets the FZ / T 50543 and DINENISO 2076 standards. In actual selection, as long as the breaking force of the bandage 4 is greater than 3000N and the bandage 4 can withstand the pulling speed of 50mm / min at room temperature, the specific bandage 4 is mostly made of medium-strength polyester filament (MT1000dtex / 37f) with a linear density of 1000dtex and a monofilament number of 37.

[0029] Specifically, a through hole 21 for placing the bandage 4 is provided at a corresponding position of the shell 2. Better restraint assembly is achieved, and subsequent maintenance is also convenient. The shell 2 as a whole includes an end 22 for fixing and positioning the shock absorber and an intermediate body 23 for placing the mass block 1; the end 22 is connected to the intermediate body 23, and the vertical distance between the end 22 and the center point of the mass block 1 is closer than that between the intermediate body 23. Thereby, the corresponding space utilization rate is improved, and the overall strength is improved, and it has a strong deformation resistance. Generally, the end 22 and the intermediate body 23 are integrally formed, which can effectively enhance the overall resistance, and the part of the shell 2 where the mass block 1 is placed is provided with a runway-shaped hole 24, which can reduce a certain amount of mass and effectively improve the deformation resistance.

[0030] Preferably, in the specific design, the mass block 1 is in the shape of a rectangular parallelepiped as a whole, and rubber parts 3 are sleeved at both ends of the mass block 1. A stabilizing structure 31 is arranged on the outer side of the rubber part 3 away from the mass block 1. In order to improve the stabilizing effect and reduce collision friction. The specific stabilizing structure 31 includes a cylindrical support angle 32 fixed in the longitudinal direction of the mass block 1, a hemispherical contact 33 is arranged on the side of the rubber part 3 away from the shell 2, and a semi-cylindrical contact strip 34 is arranged on the side of the rubber part 3 close to the shell 2. In this way, positioning and buffering are performed in all directions to reduce the probability of collision. Compared with the two shells 2 of the traditional structure, the felt 5 needs to be added. This solution not only reduces the number of parts, but also can more effectively reduce the trouble of knocking noise. In terms of design, because the bandage of this solution is soft, the bandage design only needs to consider reserving sufficient gap with the mass block 1 bracket, without considering the gap in the surrounding environment, and the design is simpler.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the concept of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A dynamic vibration absorber with soft limit, characterized in that: It includes a mass block, a shell, a rubber piece and a bandage; two ends of the mass block are fixed to the shell through the rubber pieces, and the mass block and the shell are fixed by adding a bandage.

2. A dynamic vibration absorber with soft limit according to claim 1, characterized in that: The number of bandages is at least two.

3. The dynamic vibration absorber with soft limit according to claim 2, characterized in that: The material of the bandage meets the standards of FZ / T 50543 and DIN EN ISO 2076.

4. A dynamic vibration absorber with soft limit according to claim 2, characterized in that: The breaking force of the bandage must be greater than 3000N; the bandage can withstand the pulling speed of 50mm / min at room temperature.

5. The dynamic vibration absorber with soft limit according to claim 2 is characterized in that: The shell body is provided with a through hole for placing a bandage.

6. A dynamic vibration absorber with soft limit according to claim 5, characterized in that the housing The whole comprises an end portion for fixing and positioning the vibration absorber and an intermediate body for accommodating a mass block; the end portion is connected to the intermediate body, and the vertical distance between the end portion and the center point of the mass block is closer than that between the intermediate body.

7. A dynamic vibration absorber with soft limit according to claim 6, characterized in that: The end portion is integrally formed with the intermediate body.

8. The dynamic vibration absorber with soft limit according to claim 6 is characterized in that: A racetrack-shaped hole is arranged on the portion of the shell where the mass block is placed.

9. The dynamic vibration absorber with soft limit according to claim 1, characterized in that: The mass block is in the shape of a rectangular parallelepiped as a whole, and rubber pieces are sleeved on both ends of the mass block; a stabilizing structure is arranged on the outer side of the rubber piece away from the mass block.

10. A dynamic vibration absorber with soft limit according to claim 9, characterized in that: The stable structure comprises a cylindrical support angle fixed in the longitudinal direction of the mass block, a hemispherical contact point is arranged on the side of the rubber piece away from the shell, and a semi-cylindrical contact strip is arranged on the side of the rubber piece close to the shell.

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