Rear auxiliary frame vibration absorber

Abstract

The utility model discloses a rear auxiliary frame vibration absorber, and belongs to the technical field of automobile parts, the rear auxiliary frame vibration absorber comprises a support and a mass block, the whole support is of a strip-shaped structure, the mass block is of an annular structure, a lining is installed at an inner hole of the mass block, the mass block is connected with the first end of the support through the lining, and the second end of the support is connected with the second end of the mass block. The second end of the support is provided with an installation hole connected with a rear auxiliary frame, and the first end of the support is further provided with a buffering cushion which is located below the mass block. The mode of adding the support is adopted, the balancing weight can be installed on the side face of the auxiliary frame, the mass of the balancing weight is further increased, and the vibration absorption effect is improved.

Description

Technical Field

[0001] This application relates to the technical field of automotive parts, and particularly to a rear subframe vibration absorber. Background Art

[0002] The vibration inside the vehicle has attracted more and more attention. Its vibration source is that the engine is prone to resonate with parts such as the transmission, the main drive shaft, the main reducer, and the subframe, and is transmitted to the interior of the carriage through the subframe, resulting in problems such as vibration and noise. As an important link in the transmission path, the vibration reduction effect of the subframe affects the NVH performance of the vehicle. Currently, vibration absorbers are added to the subframe to attenuate vibrations at specific frequencies.

[0003] Generally, a vibration absorber includes an inner bracket, a rubber body, an outer bracket, and a mass block that are coaxially arranged from the inside to the outside. Related prior art such as the Chinese patent application "A Subframe Dynamic Vibration Absorber", publication number: CN215370783U, discloses a structure including a skeleton, a counterweight, and a rubber body, where the skeleton and the counterweight are both wrapped inside the rubber body; the rubber body includes a first rubber body, a second rubber body, and rubber legs, and the first rubber body and the second rubber body are connected by the rubber legs; a first through hole that penetrates both ends is provided on the first rubber body, and the second rubber body is arranged inside the first through hole; one end of the rubber leg is connected to the inner surface of the first rubber body, and the other end of the rubber leg is connected to the outer surface of the second rubber body.

[0004] The existing vibration absorber structures usually choose to be installed at the positions of the upper and lower surfaces of the subframe, but the installable space here is small, resulting in limitations on the mass and structure of the counterweight. It may not be able to effectively attenuate vibrations at specific frequencies, leading to an unsatisfactory vibration reduction effect. Summary of the Utility Model

[0005] The technical problem to be solved by this application is to provide a rear subframe vibration absorber, which adopts the method of adding a bracket to enable the installation of a counterweight on the side of the subframe, further increasing the mass of the counterweight and improving the vibration absorption effect.

[0006] The technical solution adopted by this application is: a rear subframe vibration absorber, including a bracket and a mass block. The bracket is integrally in a strip structure, and the mass block is in a ring structure. A bushing is installed at the inner hole of the mass block, and the mass block is connected to the first end of the bracket through the bushing. A connection and installation hole for connecting to the rear subframe is provided at the second end of the bracket, and a buffer pad is further provided at the first end of the bracket, and the buffer pad is located below the mass block.

[0007] Compared with the prior art, the advantages of the present application are as follows. By adding a bracket, the mass block can be extended from the original installation position to the side of the subframe. When the entire mass block is located on the side of the subframe, the installation space of the mounting block increases, and the mass of the mass block can be further increased. The greater the weight of the mass block, the better the vibration absorption effect of the shock absorber. In addition, a rubber pad structure is designed at the first end of the bracket in the present application, which can effectively prevent the mass block from colliding with the bracket and generating noise when vibrating under extreme conditions.

[0008] In the present application, for the convenience of description, the description is based on Figure 1 in the drawings of the specification, which does not represent the positional relationship in actual use of the present application.

[0009] In some embodiments of the present application, the bracket includes a side plate, a top plate and a bottom plate. The top plate and the bottom plate are respectively connected to the top surface and the bottom surface of the side plate. The longitudinal section of the bracket is in a horizontally placed U-shaped structure, and the bracket is integrally formed. The U-shaped structure design can effectively disperse the load applied to the bracket and improve the overall structural strength and stability.

[0010] The connection between the top plate and the bottom plate and the side plate enhances the rigidity of the bracket and reduces deformation under working conditions. The structural design of the top plate and the bottom plate can provide a larger support area in a limited space, facilitating the installation of the mass block and other components.

[0011] In some embodiments of the present application, the first end of the bracket extends away from the side plate to form a mounting seat. The mounting seat includes a cylindrical member. The top surface of the cylindrical member is connected to the top plate, and the bottom surface of the cylindrical member is connected to the bottom plate to form a plane. Connecting plates are provided on both sides of the outer peripheral surface of the cylindrical member. The connecting plates are perpendicular to the bottom surface and the top surface, and the connecting plates are connected to the bottom surface and the top surface. The above structure can effectively enhance the structural strength of the mounting seat and cooperate with the installation of the mass block.

[0012] In some embodiments of the present application, the bushing is installed above the cylindrical member through a bolt. The rod portion of the bolt passes through the central hole of the bushing and is locked with the cylindrical member. The bushing is fixed on the cylindrical member through the bolt, ensuring a more firm connection between the bushing and the bracket and reducing the looseness that may occur during the working process.

[0013] In some embodiments of the present application, the side plate is provided with a notch, and the notch is arranged opposite to the mass block. Through a simple notch design, the complexity in the assembly process can be reduced, and the material cost of the product can be lowered.

[0014] In some embodiments of the present application, the buffer pad is in a fan-shaped ring structure. The bottom surface of the buffer pad is attached to the top plate, and the top surface of the buffer pad is serrated. The above is the preferred structure of the buffer pad, which plays a good role in shock absorption and buffering and avoids abnormal noise under extreme conditions.

[0015] In some embodiments of the present application, two mounting posts protrude from the bottom surface of the buffer pad, and the bottoms of the mounting posts pass through the top plate and are snap-connected to the top plate; the mounting posts and the buffer pad are integrally vulcanized and formed.

[0016] Specifically, the mounting posts are provided with reverse buckles, and through holes are provided at the positions corresponding to the mounting posts on the top plate. After the mounting posts and the reverse buckles pass through the through holes, the reverse buckles lock the buffer pad on the top plate. Considering the force of the buffer pad under working conditions, the installation can be completed through the mounting posts integrally formed with the buffer pad.

[0017] In some embodiments of the present application, the bottom outer diameter of the mass block gradually decreases from top to bottom, and the diameter of the bottom surface of the mass block is adapted to the outer diameter of the buffer pad.

[0018] In the present application, the mass block will adopt a relatively large mass, and correspondingly, the outer diameter volume of the mass block will be relatively large. Considering the installation of the product and the material cost, its bracket will not be made very large. Therefore, in order to avoid the collision between the mass block and the bracket, the bottom outer diameter of the mass block close to the bracket is reduced, and finally the diameter of the bottom surface of the mass block is slightly larger than the outer diameter of the buffer pad, which is the preferred structure of the present application.

[0019] In some embodiments of the present application, the inner hole of the mass block is a stepped hole with a larger upper diameter than the lower diameter, and the bushing is tightly fitted and installed in the lower part of the inner hole. The design of the stepped hole makes the installation of the bushing more convenient and avoids a complex centering process.

[0020] In some embodiments of the present application, mounting holes are also provided at the first end of the side plate close to the mounting seat, and a mounting plate extends from the side of the bottom plate away from the side plate. In the present application, the stable and reliable installation of the bracket is realized by providing mounting holes in multiple places, and thus the stable and reliable installation of the mass block is realized.

[0021] On the basis of conforming to the common knowledge in the art, the above embodiments can be combined arbitrarily. Description of the Drawings

[0022] The present application will be further described in detail below in conjunction with the drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are only drawn for the purpose of explaining the preferred embodiments and should not be regarded as limiting the scope of the present application. In addition, unless otherwise specified, the drawings only schematically show the composition or structure of the described object and may include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0023] Figure 1 Structural Schematic of the Present Application Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the structure of this application Figure 2 ;

[0025] Figure 3 A top view of the present application;

[0026] Figure 4 for Figure 3 Sectional view of section AA;

[0027] Figure 5 It is a structural schematic diagram of the connection between the bracket and the buffer pad.

[0028] Among them, the specific descriptions of the figure numbers are as follows: 1. bracket; 2. mass block; 3. bushing; 4. buffer pad; 5. side plate; 6. top plate; 7. bottom plate; 8. mounting seat; 9. cylindrical part; 10. connecting plate; 11. bolt; 12. notch; 13. mounting column; 14. undercut; 15. mounting hole; 16. stepped hole; 17. mounting plate. DETAILED DESCRIPTION

[0029] The present application is described in detail below in conjunction with the accompanying drawings.

[0030] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0031] A rear subframe vibration absorber, embodiment 1 Figure 1 , Figure 2 As shown: it includes a bracket 1 and a mass block 2, the bracket 1 is in a strip-shaped structure as a whole, the mass block 2 is in an annular structure, a bushing 3 is installed at the inner hole of the mass block 2, the mass block 2 is connected to the first end of the bracket 1 through the bushing 3, and the second end of the bracket 1 is provided with a mounting hole 15 connected to the rear subframe. By adding the bracket 1, the mass block 2 can be extended outward from the original installation position to the side of the subframe. When the mass block 2 is located on the side of the subframe as a whole, the installation space of the mounting block is increased, and the mass of the mass block 2 can be further increased. The greater the weight of the mass block 2, the better the vibration absorption effect of the vibration absorber. A buffer pad 4 is also provided on the first end of the bracket 1, and the buffer pad 4 is located below the mass block 2. The present application designs a rubber pad structure at the first end of the bracket 1, which can effectively prevent the mass block 2 from colliding with the bracket 1 and generating noise when vibrating under extreme working conditions.

[0032] In this application, for the convenience of description, Figure 1 The description is for reference only and does not represent the positional relationship of the present application in actual use.

[0033] Embodiment 2, as shown in Figures 1 to 4 shown, the bracket 1 includes side plates 5, a top plate 6 and a bottom plate 7. The top plate 6 and the bottom plate 7 are respectively connected to the top surface and the bottom surface of the side plates 5. The longitudinal section of the bracket 1 is in a horizontally placed U-shaped structure, and the bracket 1 is integrally formed. The U-shaped structure design can effectively disperse the load applied to the bracket 1 and improve the overall structural strength and stability.

[0034] The connection between the top plate 6 and the bottom plate 7 and the side plates 5 enhances the rigidity of the bracket 1 and reduces deformation under working conditions. The structural design of the top plate 6 and the bottom plate 7 can provide a larger support area within a limited space, facilitating the installation of the mass block 2 and other components.

[0035] The first end of the bracket 1 extends away from the side plate 5 to form a mounting seat 8. The mounting seat 8 includes a cylindrical member 9. The top surface of the cylindrical member 9 is connected to the top plate 6, and the bottom surface of the cylindrical member 9 is connected to the bottom plate 7 to form a plane. Both sides of the outer peripheral surface of the cylindrical member 9 are provided with connecting plates 10. The connecting plates 10 are perpendicular to the bottom surface and the top surface, and the connecting plates 10 are connected to the bottom surface and the top surface. The above structure can effectively enhance the structural strength of the mounting seat 8 and cooperate with the installation of the mass block 2.

[0036] The bushing 3 is installed above the cylindrical member 9 through a bolt 11. The rod portion of the bolt 11 passes through the central hole of the bushing 3 and is locked with the cylindrical member 9. The bushing 3 is fixed to the cylindrical member 9 through the bolt 11, ensuring a more secure connection between the bushing 3 and the bracket 1 and reducing possible looseness during the working process.

[0037] The side plate 5 is provided with a notch 12, and the notch 12 is arranged opposite to the mass block 2. Through the simple notch 12 design, the complexity in the assembly process can be reduced, and the material cost of the product can be lowered.

[0038] Other contents of Embodiment 2 are the same as those of Embodiment 1.

[0039] Embodiment 3, as shown in Figures 1 to 5 shown, the buffer pad 4 is in a fan-shaped ring structure. The bottom surface of the buffer pad 4 is attached to the top plate 6, and the top surface of the buffer pad 4 is serrated. The above is the preferred structure of the buffer pad 4, which plays a good shock absorption and buffering role and avoids abnormal noises under extreme working conditions.

[0040] Two mounting posts 13 protrude from the bottom surface of the buffer pad 4. The bottoms of the mounting posts 13 pass through the top plate 6 and are snap-connected to the top plate 6; the mounting posts 13 and the buffer pad 4 are integrally vulcanized and formed.

[0041] Specifically, the installation column 13 is provided with an inverse buckle 14, and through holes are provided at the positions corresponding to the installation column 13 on the top plate 6. After the installation column 13 and the inverse buckle 14 pass through the through holes, the inverse buckle 14 locks the buffer pad 4 on the top plate 6. Considering the force on the buffer pad 4 under working conditions, the installation can be completed through the installation column 13 integrally formed with the buffer pad 4.

[0042] The bottom outer diameter of the mass block 2 gradually decreases from top to bottom, and the diameter of the bottom surface of the mass block 2 is adapted to the outer diameter of the buffer pad 4. In this application, the mass block 2 will have a relatively large mass, and correspondingly, the outer diameter and volume of the mass block 2 will be relatively large. Considering the installation of the product and material costs, its bracket 1 will not be made very large. Therefore, in order to prevent the mass block 2 from colliding with the bracket 1, the bottom outer diameter of the mass block 2 close to the bracket 1 is reduced, and finally the diameter of the bottom surface of the mass block 2 is slightly larger than the outer diameter of the buffer pad 4 and is adapted to the outer diameter of the buffer pad 4, which is the preferred structure of this application.

[0043] The inner hole of the mass block 2 is a stepped hole 16 with a larger upper diameter than the lower diameter, and the bushing 3 is tightly fitted and installed in the lower part of the inner hole. The design of the stepped hole 16 makes the installation of the bushing 3 more convenient and avoids a complex centering process.

[0044] An installation hole 15 is also provided at the first end of the side plate 5 close to the mounting seat 8, and a mounting plate 17 extends from the side of the bottom plate 7 away from the side plate 5. In this application, by providing installation holes 15 in multiple places, the stable and reliable installation of the bracket 1 is realized, and thus the stable and reliable installation of the mass block 2 is realized.

[0045] The other contents of the third embodiment are the same as those of the first or second embodiment.

[0046] The above has introduced this application in detail. Specific examples are used in this article to elaborate on the principle and implementation mode of this application. The description of the above embodiments is only used to help understand this application and its core idea. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of this application, several improvements and modifications can be made to this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A rear subframe vibration absorber, characterized in that: The invention comprises a bracket (1) and a mass block (2), wherein the bracket (1) is in an overall strip-shaped structure, and the mass block (2) is in an annular structure. A bushing (3) is installed at the inner hole of the mass block (2), and the mass block (2) is connected to the first end of the bracket (1) via the bushing (3). The second end of the bracket (1) is provided with a mounting hole (15) for connecting with a rear subframe. A buffer pad (4) is also provided on the first end of the bracket (1), and the buffer pad (4) is located below the mass block (2).

2. The rear subframe vibration absorber according to claim 1, characterized in that: The bracket (1) comprises a side plate (5), a top plate (6) and a bottom plate (7); the top plate (6) and the bottom plate (7) are respectively connected to the top surface and the bottom surface of the side plate (5); the longitudinal cross-section of the bracket (1) is a horizontally placed U-shaped structure; the bracket (1) is integrally formed.

3. The rear subframe vibration absorber according to claim 1, characterized in that: The first end of the bracket (1) extends toward a side away from the side plate (5) to form a mounting seat (8), the mounting seat (8) comprising a cylindrical member (9), the top surface of the cylindrical member (9) being connected to the top plate (6), the bottom surface of the cylindrical member (9) being connected to the bottom plate (7) to form a plane, connecting plates (10) being provided on both sides of the outer circumference of the cylindrical member (9), the connecting plates (10) being perpendicular to the bottom surface and the top surface, and the connecting plates (10) being connected to the bottom surface and the top surface.

4. The rear subframe vibration absorber according to claim 3, characterized in that: The bushing (3) is installed above the cylindrical member (9) via a bolt (11); the rod of the bolt (11) passes through the center hole of the bushing (3) and is locked with the cylindrical member (9).

5. The rear subframe vibration absorber according to claim 2, characterized in that: The side plate (5) is provided with a notch (12), and the notch (12) is arranged opposite to the mass block (2).

6. The rear subframe vibration absorber according to claim 2, characterized in that: The buffer pad (4) is in a fan-shaped ring structure, the bottom surface of the buffer pad (4) is in contact with the top plate (6), and the top surface of the buffer pad (4) is in a serrated shape.

7. The rear subframe vibration absorber according to claim 6, characterized in that: Two mounting posts (13) extend from the bottom surface of the buffer pad (4); the bottoms of the mounting posts (13) pass through the top plate (6) and are snap-fitted to the top plate (6); the mounting posts (13) and the buffer pad (4) are integrally vulcanized.

8. The rear subframe vibration absorber according to claim 1, characterized in that: The outer diameter of the bottom of the mass block (2) gradually decreases from top to bottom, and the diameter of the bottom surface of the mass block (2) is adapted to the outer diameter of the buffer pad (4).

9. The rear subframe vibration absorber according to claim 1, characterized in that: The inner hole of the mass block (2) is a stepped hole (16) with an upper diameter larger than a lower diameter, and the bushing (3) is tightly mounted at the lower part of the inner hole.

10. The rear subframe vibration absorber according to claim 2, characterized in that: A mounting hole (15) is also provided at the first end of the side plate (5) near the mounting seat (8), and a mounting plate (17) extends from the bottom plate (7) at a side away from the side plate (5).

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