Vibration absorber capable of controlling and adjusting frequency through assembly

Abstract

The utility model discloses a vibration absorber capable of controlling and adjusting frequency through assembly, which relates to the technical field of automobile parts and comprises a mass block, a support and a fastener. The mass block is provided with a mounting hole; a bushing assembly is arranged in the mounting hole, the bushing assembly comprises two vulcanization bushings which are oppositely arranged, and the rotation angle of the two vulcanization bushings can be adjusted; and the fastener sequentially penetrates through the two vulcanized bushings and then is connected with the bracket. Noise caused by the speed reducer at a high rotating speed can be eliminated through the frequency and quality of the speed reducer, and a good NVH effect can be provided.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically a vibration absorber whose frequency can be adjusted through assembly control. Background Technology

[0002] In recent years, with the upgrading of consumption, new energy vehicles have become increasingly popular. More and more lightweight components are being used in vehicle bodies, leading to resonance and NVH (noise, vibration, and harshness) issues. The vibration absorber uses a structure design where a mass block and rubber bushing are vulcanized together. In actual use, this design suffers from the problem of the rubber material hardness fluctuating significantly affecting the frequency, resulting in poor product consistency. Frequency fluctuations in the vibration absorber affect the overall vibration absorption effect, thus impacting the overall NVH performance of the vehicle.

[0003] Against this backdrop, there is an urgent need for a vibration absorber that combines stable quality, ease of control, convenient production, low batch defects, and adjustable frequency through assembly control. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a vibration absorber whose frequency can be adjusted by assembly control. It can eliminate the noise caused by the reducer at high speed through its own frequency and mass, and can provide a good NVH effect.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a vibration absorber with adjustable frequency through assembly control, comprising a mass block, a bracket, and fasteners; the mass block is provided with mounting holes; a bushing assembly is provided in the mounting holes, the bushing assembly comprising two vulcanized bushings arranged opposite each other, and the rotation angle of the two vulcanized bushings is adjustable; the fasteners pass through the two vulcanized bushings in sequence and are connected to the bracket.

[0006] A further improvement is that the mass block has a cavity inside that communicates with the mounting hole.

[0007] A further improvement is that the bracket includes a body, the body is provided with a screw hole, and the body is provided with a support arm, the support arm being provided with a connection hole.

[0008] A further improvement is that the support arm is provided in two parts, which are tilted and opposite to each other on the body.

[0009] A further improvement is that the fastener includes a stud, one end of which is provided with an external thread adapted to the threaded hole, and the other end of which is provided with a nut.

[0010] A further improvement is that a limit stop is provided at the edge of the nut.

[0011] A further improvement is that the vulcanized bushing includes an inner tube and an outer tube, and a rubber body is provided between the inner tube and the outer tube.

[0012] A further improvement is that the distal end of the inner tube is bent outward to form a first flange, and the diameter of the first flange is larger than the diameter of the mounting hole; wherein the first flange of one vulcanized bushing abuts against the body, and the first flange of the other vulcanized bushing abuts against the nut.

[0013] A further improvement is that the far end of the outer tube is bent outward to form a second flange, and the two second flanges of the two vulcanized bushings form a limiting bayonet that matches the mounting hole.

[0014] A further improvement is that: two damping holes are provided opposite each other on the near end face of the rubber body, and two notches corresponding to the two damping holes are provided at the edge of the second flange.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. This utility model has a simple structure, is easy to industrialize, and has low manufacturing costs.

[0017] 2. This utility model is designed with an anti-detachment structure, which can resist vehicle failure due to insufficient strength under various harsh working conditions.

[0018] 3. This utility model can provide a suitable frequency range by changing the relative angle of the two bushings, thereby improving the overall comfort of the vehicle. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the vibration absorber in an embodiment of the present invention;

[0020] Figure 2 This is a top view of the vibration absorber in an embodiment of this utility model;

[0021] Figure 3 This is a cross-sectional view of the vibration absorber in an embodiment of this utility model;

[0022] Figure 4 This is a schematic diagram of the mass block in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the support structure in an embodiment of the present utility model;

[0024] Figure 6 This is a schematic diagram of the fastener structure in an embodiment of the present utility model;

[0025] Figure 7 This is a schematic diagram of the bushing assembly in an embodiment of the present utility model;

[0026] Figure 8This is a schematic diagram of the structure of the vulcanized bushing in an embodiment of this utility model;

[0027] Figure 9 This is a cross-sectional view of the vulcanized bushing in an embodiment of the present invention;

[0028] Figure 10 This is a schematic diagram of the operation of the vibration absorber in the embodiment of this utility model.

[0029] Figure label:

[0030] 1-Mass block; 11-Cavity; 12-Mounting hole;

[0031] 2-Bracket; 21-Body; 22-Screw hole; 23-Bearing arm; 24-Connecting hole;

[0032] 3-Fasteners; 31-Studs; 32-Nuts; 33-External threads; 34-Limiting flanges;

[0033] 4-Bushing assembly; 41-Vulcanized bushing; 411-Inner tube; 412-Outer tube; 413-Rubber body; 414-First flange; 415-Second flange; 416-Notch; 417-Damping hole; 42-Limiting bayonet. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0035] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0037] The following description, in conjunction with the accompanying drawings, further illustrates specific embodiments of the present invention, making the technical solution and beneficial effects of the present invention clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0038] See Figures 1-3 As shown, this utility model embodiment provides a vibration absorber whose frequency can be adjusted by assembly control, including a mass block 1, a bracket 2, and a fastener 3; the mass block 1 is provided with a mounting hole 12; a bushing assembly 4 is provided in the mounting hole 12, the bushing assembly 4 includes two vulcanized bushings 41 arranged opposite each other, and the rotation angle of the two vulcanized bushings 41 is adjustable; the fastener 3 passes through the two vulcanized bushings 41 in sequence and is connected to the bracket 2.

[0039] See Figure 4 As shown, the mass block 1 has a cavity 11 that communicates with the mounting hole 12.

[0040] See Figure 5 and Figure 10 As shown, the bracket 2 includes a body 21, which has a screw hole 22 and a support arm 23, which has a connection hole 24. Specifically, there are two support arms 23, which are inclined and opposite to each other on the body 21.

[0041] See Figure 6 As shown, the fastener 3 includes a stud 31, one end of which is provided with an external thread 33 that matches the threaded hole 22, and the other end of which is provided with a nut 32. Specifically, a limit stop 34 is provided at the edge of the nut 32.

[0042] See Figures 7-9 As shown, the vulcanized bushing 41 includes an inner tube 411 and an outer tube 412, with a rubber body 413 disposed between the inner tube 411 and the outer tube 412. Specifically, the distal end of the inner tube 411 is bent outward to form a first flange 414, and the diameter of the first flange 414 is larger than the diameter of the mounting hole 12, with an anti-dislodgement design to ensure product reliability. The first flange 414 of one vulcanized bushing 41 abuts against the body 21, and the first flange 414 of the other vulcanized bushing 41 abuts against the nut 32. The distal end of the outer tube 412 is bent outward to form a second flange 415, and the two second flanges 415 of the two vulcanized bushings form a limiting slot 42 adapted to the mounting hole 12. Two damping holes 417 are disposed opposite each other on the proximal end face of the rubber body 413, and two notches 416 corresponding to the two damping holes 417 are disposed at the edge of the second flange 415. The second flange design incorporates measures to prevent misplacement and adds two notches to facilitate assembly angle adjustment.

[0043] The working principle of this utility model is as follows:

[0044] The relative angle (the included angle between the damping holes of the two bushings) of the two vulcanized bushings pressed into the mass block can be controlled within the range of 0-90° to adjust the X / Y frequency, and the frequency control accuracy is high under the same rubber hardness.

[0045] After the fasteners are tightened, the two vulcanized bushings fit together tightly. The amount of tightening compression can be controlled by adjusting their gap, and the Z-axis frequency can be adjusted.

[0046] Adjusting the rubber hardness can further increase the frequency adjustment range.

[0047] The outer diameter of the vulcanized bushing outer tube is interference-fitted with the inner diameter of the mass block, which allows for control of the fit amount, adjustment of radial rubber compression, and control of the X / Y direction frequency adjustment range.

[0048] This invention achieves different frequency adjustments by fitting a rubber bushing with an angled mass block, thus providing vibration isolation and noise reduction. It has excellent NVH performance and its adjustable nature greatly enhances product adaptability.

[0049] In the description of this specification, references to terms such as "an embodiment," "preferred," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. Illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] Based on the above description of the structure and principle, those skilled in the art should understand that this utility model is not limited to the specific embodiments described above. Improvements and substitutions based on this utility model using techniques known in the art all fall within the protection scope of this utility model and should be defined by the claims.

Claims

1. A vibration absorber with adjustable frequency via assembly control, comprising a mass block (1), characterized in that: It also includes a bracket (2) and fasteners (3); The mass block (1) is provided with mounting holes (12); A bushing assembly (4) is provided in the mounting hole (12). The bushing assembly (4) includes two vulcanized bushings (41) arranged opposite each other, and the rotation angle of the two vulcanized bushings (41) is adjustable. The fastener (3) passes through the two vulcanized bushings (41) in sequence and is then connected to the bracket (2).

2. The vibration absorber with adjustable frequency via assembly control according to claim 1, characterized in that: The mass block (1) has a cavity (11) that communicates with the mounting hole (12).

3. The vibration absorber with adjustable frequency via assembly control according to claim 1, characterized in that: The bracket (2) includes a body (21), which is provided with a screw hole (22) and a support arm (23) which is provided with a connection hole (24).

4. The vibration absorber with adjustable frequency via assembly control according to claim 3, characterized in that: Two support arms (23) are provided, which are inclined and opposite to each other on the main body (21).

5. The vibration absorber with adjustable frequency via assembly control according to claim 3, characterized in that: The fastener (3) includes a stud (31), one end of which is provided with an external thread (33) that is adapted to the threaded hole (22), and the other end of which is provided with a nut (32).

6. The vibration absorber with adjustable frequency via assembly control according to claim 5, characterized in that: The nut (32) is provided with a limit stop (34) at its edge.

7. The vibration absorber with adjustable frequency via assembly control according to claim 5, characterized in that: The vulcanized bushing (41) includes an inner tube (411) and an outer tube (412), and a rubber body (413) is provided between the inner tube (411) and the outer tube (412).

8. The vibration absorber with adjustable frequency via assembly control according to claim 7, characterized in that: The distal end of the inner tube (411) is bent outward to form a first flange (414), and the diameter of the first flange (414) is larger than the diameter of the mounting hole (12); the first flange (414) of one vulcanized bushing (41) abuts against the body (21), and the first flange (414) of the other vulcanized bushing (41) abuts against the nut (32).

9. The vibration absorber with adjustable frequency via assembly control according to claim 7, characterized in that: The distal end of the outer tube (412) is bent outward to form a second flange (415), and the two second flanges (415) of the two vulcanized bushings (41) form a limiting bayonet (42) that is compatible with the mounting hole (12).

10. The vibration absorber with adjustable frequency via assembly control according to claim 9, characterized in that: The rubber body (413) has two damping holes (417) facing each other on its near end face, and the edge of the second flange (415) has two notches (416) corresponding to the two damping holes (417).

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