Seat vibration absorber with limiting structure

Abstract

The utility model discloses a seat vibration absorber with limiting structure relates to automobile parts technical field, including mass, still including main part mounting support and a plurality of limiting devices, the main part mounting support is surrounded in mass outside half, and is connected with mass through a plurality of rubber main spring, limiting device includes limit pin, and limit pin is penetrated in mass, and the both ends of limit pin are respectively connected with main part mounting support through rubber limit bushing after extending from mass. The utility model discloses the limiting structure and rubber component design of innovation, and the performance, reliability and easy use of seat vibration absorber are improved comprehensively, and the NVH problem in the background art is solved effectively, and the technical support is provided for the comfort of new energy automobile.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically a seat vibration absorber with a limiting structure. Background Technology

[0002] With the development of the automotive industry and the increasing popularity of automobiles, people's demands for the driving experience have expanded from early concerns about handling stability to include ride comfort. Especially in new energy vehicles, which lack the vibration source of traditional internal combustion engines, road vibrations have become the primary factor affecting ride comfort. This places higher demands on the NVH performance of the automotive suspension system. Bushings are crucial components in the automotive suspension system, determining handling stability and ride comfort; therefore, in-depth research on these components is of great significance.

[0003] Existing seat vibration absorbers have many shortcomings: Traditional vibration absorbers often have simple structures and lack effective limiting mechanisms, which can lead to excessive displacement or loosening of the mass block under severe vibration conditions, thereby reducing vibration absorption efficiency and even causing abnormal noise or component damage.

[0004] Due to the shortened R&D cycle of new energy vehicles, NVH issues are difficult to completely resolve before the vehicle is launched on the market. For example, seat vibration problems occur frequently, and existing vibration absorbers cannot adapt to vibration excitation at different frequencies, resulting in limited damping performance. Utility Model Content

[0005] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a seat vibration absorber with a limiting structure. Through the innovative limiting structure and rubber component design, the performance, reliability and ease of use of the seat vibration absorber are comprehensively improved, effectively solving the NVH problem mentioned in the background technology, and providing technical guarantee for the comfort of new energy vehicles.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a seat vibration absorber with a limiting structure, including a mass block, a main mounting bracket, and several limiting devices; the main mounting bracket partially surrounds the mass block and is connected to the mass block through several rubber main springs; the limiting device includes a limiting pin, which passes through the mass block, and both ends of the limiting pin extend out of the mass block and are respectively connected to the main mounting bracket through rubber limiting bushings.

[0007] A further improvement is that: the mass block includes a cuboid body, and a first notch is provided in the middle of the rear side of the cuboid body; oblique through slots are provided at the left and right ends of the cuboid body, and second notches are provided at the left and right ends of the rear side of the cuboid body, which are connected to the corresponding through slots.

[0008] A further improvement is that: a mounting plate is provided in the first notch and at both ends of the through groove, and the mounting plate is provided with a first mounting hole that is compatible with the rubber main spring.

[0009] A further improvement is that the left and right ends of the cuboid body are respectively fitted with second mounting holes that are compatible with the limiting pins.

[0010] Further improvements are made in the following ways: the main mounting bracket includes a base plate and a top plate, and the rear sides of the base plate and the top plate are connected by several connecting plates; a third notch is provided in the middle of the front side of the base plate, and a first limiting hole adapted to the rubber main spring is provided on the left and right sides of the third notch; a fourth notch is provided in the middle of the rear side of the base plate, and a fifth notch is provided at the left and right ends of the rear side of the base plate. The top plate has a sixth notch that matches the fifth notch at both ends of the rear side. The top plate also has a first limiting hole that matches the rubber main spring at the left and right ends and at the middle of the rear side opposite to the fourth notch. The bottom plate and the top plate are respectively provided with second limiting holes that are adapted to the limiting pins at their left and right ends.

[0011] A further improvement is that a first connecting lug that bends downwards is provided in the third notch of the bottom plate, and a second connecting lug that bends upwards is provided at both ends of the front side of the top plate.

[0012] A further improvement is made in that: the rubber main spring includes a columnar rubber body, the head of the rubber body is provided with a first rubber boss, and the outer side of the first rubber boss is provided with a first limiting groove adapted to the main body mounting bracket; the middle part of the rubber body is provided with a second rubber boss, and the outer side of the second rubber boss is provided with a second limiting groove adapted to the mass block mounting plate; the tail of the rubber body is provided with an expansion head.

[0013] A further improvement is that a cavity is provided in the middle of the rubber body, and the end of the cavity extends toward the head of the rubber body and expands outward to form a flared mouth.

[0014] A further improvement is that: the connection between the first rubber boss and the rubber body, and the connection between the second rubber boss and the rubber body are respectively provided with arc-shaped conical transition surfaces.

[0015] A further improvement is that the outer side of the rubber limiting bushing is provided with a third limiting groove that is adapted to the main mounting bracket, and the inner wall of the central hole of the rubber limiting bushing is provided with several protruding teeth.

[0016] The beneficial effects of this utility model are as follows: 1. This utility model introduces a limiting pin and a rubber limiting bushing. The limiting pin passes through the mass block and is connected to the main mounting bracket through the bushing to form a rigid limit. The serrated design on the inner wall of the central hole of the rubber limiting bushing effectively prevents relative sliding and abnormal noise during vibration.

[0017] 2. This invention achieves efficient vibration energy dissipation through optimized connection between the rubber main spring and the mass block. The design of the rubber main spring cavity and the flared opening enhances the elastic deformation capability of the rubber body, thereby adapting to vibration excitation at different frequencies. By adjusting the stiffness K of the rubber main spring and the weight m of the mass block 1, it is optimized for specific road surface vibrations, solving the problems of fixed frequency and poor adaptability of vibration absorbers in the prior art. Attached Figure Description

[0018] Figure 1 This is a perspective view of the seat vibration absorber with a limiting structure in an embodiment of this utility model; Figure 2 This is a front view of the seat vibration absorber with a limiting structure in an embodiment of this utility model; Figure 3 This is a left view of the seat vibration absorber with a limiting structure in an embodiment of this utility model; Figure 4 This is a top view of the seat vibration absorber with a limiting structure in an embodiment of this utility model; Figure 5 This is a bottom view of the mass block in an embodiment of this utility model; Figure 6 for Figure 5 A sectional view showing the turning point along the AA direction; Figure 7 This is a front view of the main mounting bracket in an embodiment of this utility model; Figure 8 This is a bottom view of the main mounting bracket in an embodiment of the present utility model; Figure 9 This is a right view of the main mounting bracket in an embodiment of this utility model; Figure 10 This is a cross-sectional view of the rubber main spring in an embodiment of this utility model; Figure 11 This is a cross-sectional view of the limiting device in an embodiment of this utility model; Figure 12 This is a schematic diagram of the installation of the limiting device in an embodiment of this utility model.

[0019] Figure label: 1-Mass block; 11-Cuboid body; 12-First notch; 13-Through groove; 14-Second notch; 15-Mounting plate; 16-First mounting hole; 17-Second mounting hole; 2-Main mounting bracket; 210-Base plate; 211-Third notch; 212-First connecting ear; 213-Fourth notch; 214-Fifth notch; 220-Top plate; 221-Sixth notch; 222-Second connecting ear; 230-Connecting plate; 240-First limiting hole; 250-Second limiting hole; 3-Rubber main spring; 31-Rubber body; 32-First rubber boss; 33-First limiting groove; 34-Second rubber boss; 35-Second limiting groove; 36-Expansion head; 37-Cavity; 38-Flare mouth; 4-Limiting device; 41-Limiting pin; 42-Rubber limiting bushing; 43-Protruding tooth; 44-Third limiting groove. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] See Figures 1-3As shown, this utility model embodiment provides a seat vibration absorber with a limiting structure, including a mass block 1, a main body mounting bracket 2, and several limiting devices 4.

[0025] See Figures 7-9 As shown, the main mounting bracket 2 partially surrounds the mass block 1 and is connected to the mass block 1 by several rubber main springs 3. Specifically, the main mounting bracket 2 includes a base plate 210 and a top plate 220, and the rear sides of the base plate 210 and the top plate 220 are connected by several connecting plates 230. A third notch 211 is provided in the middle of the front side of the base plate 210, and first limiting holes 240 adapted to the rubber main springs 3 are respectively provided on the left and right sides of the third notch 211. A third limiting hole 240 is provided in the middle of the rear side of the base plate 210. The bottom plate 210 has four notches 213, and the left and right ends of the rear side of the bottom plate 210 are respectively provided with fifth notches 214. The top plate 220 has six notches 221 that are adapted to the fifth notches 214 at both ends of the rear side. The left and right ends of the top plate 220 and the middle of the rear side opposite to the fourth notch 213 are respectively provided with first limiting holes 240 that are adapted to the rubber main spring 3. The left and right ends of the bottom plate 210 and the top plate 220 are respectively provided with second limiting holes 250 that are adapted to the limiting pins 41. The bottom plate 210 has a first connecting lug 212 that is bent downward in the third notch 211, and the top plate 220 has a second connecting lug 222 that is bent upward in the front side at both ends.

[0026] See Figures 11-12 As shown, the limiting device 4 includes a limiting pin 41, which passes through the mass block 1. Both ends of the limiting pin 41 extend from the mass block 1 and are connected to the main mounting bracket 2 via rubber limiting bushings 42. Specifically, the outer surface of the rubber limiting bushing 42 is provided with a third limiting groove 44 that matches the main mounting bracket 2, and the inner wall of the central hole of the rubber limiting bushing 42 is provided with several protruding teeth 43 to prevent abnormal noise.

[0027] See Figures 4-6 As shown, the mass block 1 includes a cuboid body 11, and a first notch 12 is provided in the middle of the rear side of the cuboid body 11; oblique through grooves 13 are provided at the left and right ends of the cuboid body 11, and second notches 14 communicating with the corresponding through grooves 13 are provided at the left and right ends of the rear side of the cuboid body 11, for clearance grooves during vehicle installation. Specifically, mounting plates 15 are provided in the first notch 12 and at both ends of the through grooves 13, and the mounting plates 15 are provided with first mounting holes 16 adapted to the rubber main spring 3. Second mounting holes 17 are provided at the left and right ends of the cuboid body 11, respectively, adapted to the limiting pins 41.

[0028] See Figure 10As shown, the rubber main spring 3 includes a columnar rubber body 31. The head of the rubber body 31 is provided with a first rubber boss 32, and the outer surface of the first rubber boss 32 is provided with a first limiting groove 33 adapted to the main body mounting bracket 2. The middle of the rubber body 31 is provided with a second rubber boss 34, and the outer surface of the second rubber boss 34 is provided with a second limiting groove 35 adapted to the mounting plate 15 of the mass block 1. The tail of the rubber body 31 is provided with an expansion head 36 as an assembly auxiliary part. Specifically, the middle of the rubber body 31 is provided with a cavity 37, and the end of the cavity 37 extends towards the head of the rubber body 31 and expands outward to form a flared opening 38. The connection points between the first rubber boss 32 and the rubber body 31, and between the second rubber boss 34 and the rubber body 31, are respectively provided with arc-shaped conical transition surfaces to facilitate assembly and prevent dislodgement.

[0029] This invention allows adjustment of the vibration absorber's frequency f=1 / 2π by adjusting the stiffness of the rubber spring and the weight of the mass block. (K is the system stiffness, m is the weight of the mass block, and f is the vibration frequency of the absorber). The size of the mass block and the stiffness of the bushing simultaneously determine the vibration absorption capacity.

[0030] 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.

[0031] 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 made using techniques known in the art based on this utility model all fall within the protection scope of this utility model and should be defined by the claims.

Claims

1. A seat vibration absorber with a limiting structure, comprising a mass block (1), characterized in that: It also includes a main mounting bracket (2) and several limiting devices (4); The main mounting bracket (2) is partially wrapped around the outside of the mass block (1) and connected to the mass block (1) by several rubber main springs (3); The limiting device (4) includes a limiting pin (41), which passes through the mass block (1), and the two ends of the limiting pin (41) extend out from the mass block (1) and are respectively connected to the main body mounting bracket (2) through rubber limiting bushings (42).

2. The seat vibration absorber with a limiting structure according to claim 1, characterized in that: The mass block (1) includes a cuboid body (11), and a first notch (12) is provided in the middle of the rear side of the cuboid body (11); oblique through grooves (13) are provided at the left and right ends of the cuboid body (11), and second notches (14) communicating with the corresponding through grooves (13) are provided at the left and right ends of the rear side of the cuboid body (11).

3. The seat vibration absorber with a limiting structure according to claim 2, characterized in that: Mounting plates (15) are provided in the first notch (12) and at both ends of the through groove (13), and the mounting plates (15) are provided with first mounting holes (16) that are compatible with the rubber main spring (3).

4. The seat vibration absorber with a limiting structure according to claim 2, characterized in that: The left and right ends of the cuboid body (11) are respectively fitted with second mounting holes (17) that are adapted to the limiting pins (41).

5. The seat vibration absorber with a limiting structure according to claim 1, characterized in that: The main mounting bracket (2) includes a base plate (210) and a top plate (220), and the rear sides of the base plate (210) and the top plate (220) are connected by several connecting plates (230); a third notch (211) is provided in the middle of the front side of the base plate (210), and a first limiting hole (240) adapted to the rubber main spring (3) is provided on the left and right sides of the third notch (211); a fourth notch (213) is provided in the middle of the rear side of the base plate (210), and a fifth notch (214) is provided at the left and right ends of the rear side of the base plate (210). The top plate (220) has a sixth notch (221) at both ends of the rear side that is adapted to the fifth notch (214). The top plate (220) has a first limiting hole (240) at the left and right ends and the middle of the rear side that is opposite to the fourth notch (213). The bottom plate (210) and the top plate (220) are respectively provided with second limiting holes (250) that are adapted to the limiting pin (41) at their left and right ends.

6. The seat vibration absorber with a limiting structure according to claim 5, characterized in that: The bottom plate (210) has a first connecting ear (212) bent downward in the third notch (211), and the top plate (220) has a second connecting ear (222) bent upward at both ends of the front side.

7. The seat vibration absorber with a limiting structure according to claim 1, characterized in that: The rubber main spring (3) includes a columnar rubber body (31), the head of the rubber body (31) is provided with a first rubber boss (32), and the outer side of the first rubber boss (32) is provided with a first limiting groove (33) that is adapted to the main body mounting bracket (2); the middle part of the rubber body (31) is provided with a second rubber boss (34), and the outer side of the second rubber boss (34) is provided with a second limiting groove (35) that is adapted to the mounting plate (15) of the mass block (1); the tail of the rubber body (31) is provided with an expansion head (36).

8. The seat vibration absorber with a limiting structure according to claim 7, characterized in that: The rubber body (31) has a cavity (37) in the middle, and the end of the cavity (37) extends toward the head of the rubber body (31) and expands outward to form a flared mouth (38).

9. The seat vibration absorber with a limiting structure according to claim 7, characterized in that: The connection between the first rubber boss (32) and the rubber body (31) and the connection between the second rubber boss (34) and the rubber body (31) are respectively provided with arc conical transition surfaces.

10. The seat vibration absorber with a limiting structure according to claim 1, characterized in that: The outer side of the rubber limiting bushing (42) is provided with a third limiting groove (44) that is compatible with the main mounting bracket (2), and the inner wall of the central hole of the rubber limiting bushing (42) is provided with several protruding teeth (43).

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