Double-vibration-reduction fixing seat and vibration reduction fixing structure of steering oil pipe

Abstract

The utility model discloses a double vibration reduction fixing seat and a vibration reduction fixing structure of a steering oil pipe, and belongs to the technical field of automobiles. The automobile steering oil pipe solves the problem that in the prior art, when an automobile steering oil pipe is fixedly installed on an automobile body through a metal support, the damping effect between the steering oil pipe and the metal support is poor. The rubber bushing mainly comprises a first rubber bushing body, a second rubber bushing body and a support, the first rubber bushing body is provided with a first center hole, the second rubber bushing body is provided with a second center hole, a fixing clamping hole is formed in the side, close to the first rubber bushing body, of the support, the first rubber bushing body is arranged in the fixing clamping hole, and a fixing hole is formed in the side, close to the second rubber bushing body, of the support. An annular groove is formed in the middle of the second rubber bushing, a fixing hole of the support is formed in the annular groove, the inner diameter of the fixing hole is smaller than the outer diameter of the first rubber bushing, a sleeve is inserted into a second center hole of the second rubber bushing, and an annular protruding edge is installed on the top of the sleeve.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles, and particularly relates to a double-vibration damping fixed seat and a vibration damping fixed structure for a steering oil pipe. Background Technique

[0002] In the design of an automotive steering system, the steering oil pipe is a key component connecting the steering oil pump, the steering gear, and the steering oil tank. Its function is to transport high-pressure oil from the electro-hydraulic pump to the steering gear to provide stable power assistance for the steering gear; at the same time, it transports the low-pressure oil after pressure release from the steering gear to the electro-hydraulic pump. And it undertakes the role of regulating the oil in the electro-hydraulic pump. When the oil in the electro-hydraulic pump decreases, it replenishes the oil in the electro-hydraulic pump from the steering oil tank. When the system pressure decreases, it transports the excess oil from the electro-hydraulic pump to the steering oil tank for storage.

[0003] Therefore, in the entire electro-hydraulic power steering system, the steering oil pipe plays a crucial role. Since in the electro-hydraulic power steering system, the electro-hydraulic pump adjusts the rotation speed of the electro-hydraulic pump according to different vehicle speeds and the speed at which the driver turns the steering wheel, providing different power assistance oil pressures for the steering gear, so as to ensure good lightness and smoothness when the driver turns the steering wheel. Therefore, in actual use, the rotation speed of the electro-hydraulic pump is not constant, and the rotation speed of the electro-hydraulic pump often fluctuates between 1000 r / s and 8000 r / s. Since the rotation speed of the electro-hydraulic pump is constantly fluctuating, this leads to changes in the oil pressure and flow rate of the entire hydraulic system. When this oil flows through the oil pipe, it often generates unexpected impacts, which in turn causes uncontrollable vibrations of the oil pipe. As we all know, during the driving process of an automobile, due to the power system and the excitation from the road surface, the vehicle body is vibrating all the time. After the oil pipe is fixed to the vehicle body, the vibration of the oil pipe itself and the vibration of the vehicle body are likely to generate abnormal noises and resonances. In the prior art, the steering oil pipe is generally fixed and installed on the vehicle body through a metal bracket. When the current steering oil pipe is installed and fixed, there is often only a layer of rubber bushing between the steering oil pipe and the metal bracket for vibration isolation and damping. Damping with only a layer of rubber bushing cannot effectively isolate the vibration from the steering oil pipe, making the whole vehicle prone to resonance abnormal noises, thereby affecting the NVH performance of the whole vehicle and reducing driving comfort. Summary of the Invention

[0004] The purpose of the utility model is to provide a double-vibration damping fixed seat and a vibration damping fixed structure for a steering oil pipe to overcome the problem of poor vibration damping effect between the steering oil pipe and the metal bracket when the automotive steering oil pipe is fixed and installed on the vehicle body through a metal bracket in the prior art.

[0005] The present utility model is realized by adopting the following technical solutions. A dual-vibration damping fixing seat includes a first rubber bushing, a second rubber bushing and a bracket. The first rubber bushing is provided with a first central hole, and the second rubber bushing is provided with a second central hole. One side of the bracket close to the first rubber bushing is provided with a fixing clip hole, and the first rubber bushing is in the fixing clip hole. One side of the bracket close to the second rubber bushing is provided with a fixing hole. A circular groove is provided in the middle of the second rubber bushing, and the fixing hole of the bracket is in the circular groove, and the inner diameter of the fixing hole is smaller than the outer diameter of the first rubber bushing. A sleeve is inserted into the second central hole of the second rubber bushing, and a ring-shaped convex edge is installed at the top of the sleeve.

[0006] Further, the first central hole and the second central hole are perpendicularly arranged.

[0007] Further, the bracket includes an upper plate and a lower plate, and the upper plate and the lower plate are connected by an arc at one end close to the fixing clip hole.

[0008] Further, a bushing installation groove communicating with the second central hole is provided on one side of the bracket close to the second central hole.

[0009] Further, retaining edges are respectively installed at both ends of the first rubber bushing.

[0010] Further, an opening is provided along the length direction of the first rubber bushing.

[0011] Further, the height of the sleeve is smaller than the height of the second central hole.

[0012] Further, both the bracket and the sleeve are made of metal materials.

[0013] A vibration damping fixing structure for a steering oil pipe includes a steering oil pipe and also includes the above-mentioned dual-vibration damping fixing seat, and the steering oil pipe passes through the first central hole in the first rubber bushing.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The dual-vibration damping fixing seat described in the present utility model is provided with a dual-vibration damping structure. Compared with the situation in the prior art where there is only one vibration damping structure between the steering oil pipe and the bracket, the vibration damping effect of the present utility model is better, which can more effectively reduce the vibration transmitted from the steering oil pipe to the vehicle body, reduce the possibility of resonance abnormal noise between the steering oil pipe and the whole vehicle, and further improve the NVH performance of the whole vehicle and the driving comfort. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the dual-vibration damping fixing seat described in the present utility model;

[0017] Figure 2It is an exploded schematic view of the dual-vibration damping fixing seat described in the present utility model;

[0018] Figure 3 It is a schematic view of the vibration damping fixing structure of the steering oil pipe described in the present utility model.

[0019] In the figure: 1, the first rubber bushing; 2, the second rubber bushing; 3, the bracket; 4, the first central hole; 5, the second central hole; 6, the fixing clip hole; 7, the fixing hole; 8, the annular groove; 9, the sleeve; 10, the annular convex edge; 11, the upper plate; 12, the lower plate; 13, the bushing mounting groove; 14, the opening; 15, the steering oil pipe; 16, the retaining edge. Specific embodiments

[0020] In order to enable those skilled in the art to better understand the technical solutions in the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0021] A dual-vibration damping fixing seat includes a first rubber bushing 1, a second rubber bushing 2 and a bracket 3. In the present utility model, the first rubber bushing 1 and the second rubber bushing 2 are vertically arranged, so that the first central hole 4 and the second central hole 5 are vertically arranged. The bracket 3 is a metal bracket 3. In the present utility model, the first rubber bushing 1 and the second rubber bushing 2 are both installed on the bracket 3, and the steering oil pipe 15 is installed on the vehicle body through the bracket 3. The first rubber bushing 1 is arranged between the steering oil pipe 15 and the bracket 3 and plays a vibration damping effect, and the second rubber bushing 2 is arranged between the bracket 3 and the vehicle body and plays a vibration damping effect. The first rubber bushing 1 and the second rubber bushing 2 play a dual-vibration damping effect.

[0022] The first rubber bushing 1 is provided with a first central hole 4. When the present utility model is in use, the steering oil pipe 15 passes through the first central hole 4 of the first rubber bushing 1. The first rubber bushing 1 is provided with an opening 14 along its length direction. By providing the elongated opening 14 in the present utility model, the first central hole 4 on the first rubber bushing 1 can be opened along the length direction of the opening 14 to facilitate the installation of the steering oil pipe 15 into the first central hole 4 of the first rubber bushing 1.

[0023] On one side of the bracket 3 close to the first rubber bushing 1, there is a fixed clip hole 6. The first rubber bushing 1 is in the fixed clip hole 6. The bracket 3 includes an upper plate 11 and a lower plate 12. The upper plate 11 and the lower plate 12 are connected by an arc at one end close to the fixed clip hole 6, so that the bracket 3 is in the shape of a clamping plate. When in use, the upper plate 11 and the lower plate 12 can be opened to form an opening 14 at a certain angle, which is convenient for placing the first rubber bushing 1 into the fixed clip hole 6. By making the upper plate 11 and the lower plate 12 press against each other, the bracket 3 clamps the first rubber bushing 1 in the fixed clip hole 6 onto the steering oil pipe 15.

[0024] The second rubber bushing 2 is provided with a second central hole 5. A sleeve 9 is inserted into the second central hole 5 of the second rubber bushing 2. The sleeve 9 is a metal sleeve 9. A ring-shaped flange 10 is installed at the top of the sleeve 9. When the present invention is installed, fasteners such as bolts are inserted into the sleeve 9. By providing the sleeve 9, the strength of the second rubber bushing 2 can be enhanced. By providing the ring-shaped flange 10, the strength of the top of the second rubber bushing 2 can be enhanced. The outer diameter of the ring-shaped flange 10 should be greater than the outer diameter of the top of the fastener, such as the outer diameter of the bolt head. The height of the sleeve 9 is less than the height of the second central hole 5. By making the height of the sleeve 9 less than the height of the second central hole 5, when the fastener fixes the second rubber bushing 2 and the bracket 3 to the vehicle body, the bottom of the sleeve 9 will not contact the vehicle body.

[0025] On one side of the bracket 3 close to the second rubber bushing 2, there is a fixed hole 7. An annular groove 8 is provided in the middle of the second rubber bushing 2. The fixed hole 7 of the bracket 3 is in the annular groove 8, and the inner diameter of the fixed hole 7 is less than the outer diameter of the first rubber bushing 1. In the present invention, the second rubber bushing 2 is fixed to the bracket 3 through the annular groove 8 and the fixed hole 7. The inner diameter of the fixed hole 7 is slightly larger than the outer diameter of the annular groove 8, and the inner diameter of the fixed hole 7 is less than the outer diameter of the second rubber bushing 2.

[0026] On one side of the bracket 3 close to the second central hole 5, there is a bushing installation groove 13 communicating with the second central hole 5. By designing the bushing installation groove 13, the present invention can facilitate the installation of the second rubber bushing 2 onto the bracket 3. The width of the bushing installation groove 13 is less than the inner diameter of the fixed hole 7. When installing, through the bushing installation groove 13, the annular groove 8 of the second rubber bushing 2 is inserted into the fixed hole 7.

[0027] Blocking edges 16 are respectively installed at both ends of the first rubber bushing 1. By respectively installing the blocking edges 16 at both ends of the first rubber bushing 1, the present invention can limit the position of the bracket 3 and facilitate the fixing of the first rubber bushing 1 by the bracket 3.

[0028] A vibration damping and fixing structure for a steering oil pipe, comprising a steering oil pipe 15, and further comprising the above-mentioned double vibration damping fixing seat, wherein the steering oil pipe 15 passes through a first central hole 4 in a first rubber bushing 1.

Claims

1. A double vibration damping mount, characterized in that: It includes a first rubber bushing (1), a second rubber bushing (2) and a bracket (3). The first rubber bushing (1) is provided with a first central hole (4), and the second rubber bushing (2) is provided with a second central hole (5). One side of the bracket (3) close to the first rubber bushing (1) is provided with a fixed clip hole (6), and the first rubber bushing (1) is in the fixed clip hole (6). One side of the bracket (3) close to the second rubber bushing (2) is provided with a fixing hole (7). A circular groove (8) is provided in the middle of the second rubber bushing (2), and the fixing hole (7) of the bracket (3) is in the circular groove (8), and the inner diameter of the fixing hole (7) is smaller than the outer diameter of the first rubber bushing (1). A sleeve (9) is inserted into the second central hole (5) of the second rubber bushing (2), and an annular flange (10) is installed at the top of the sleeve (9).

2. The dual damping fixing seat according to claim 1, characterized in that, The first central hole (4) and the second central hole (5) are vertically arranged.

3. The dual shock-absorbing fixing seat according to claim 1, characterized in that, The bracket (3) includes an upper plate (11) and a lower plate (12), and the upper plate (11) and the lower plate (12) are connected by an arc at one end close to the fixed clip hole (6).

4. The dual damping fixing seat according to claim 1, wherein, One side of the bracket (3) close to the second central hole (5) is provided with a bushing mounting groove (13) communicating with the second central hole (5).

5. The dual vibration damping mount according to claim 1, characterized in that: Blocking edges (16) are respectively installed at both ends of the first rubber bushing (1).

6. The dual shock-absorbing fixing seat according to claim 1, wherein An opening (14) is provided in the first rubber bushing (1) along its length direction.

7. A dual damping fixing seat according to claim 1, characterized in that, The height of the sleeve (9) is smaller than the height of the second central hole (5).

8. The double-vibration-damping fixing seat according to claim 1, wherein, Both the bracket (3) and the sleeve (9) are made of metal material.

9. A damping and fixing structure for a steering oil pipe, comprising a steering oil pipe (15), characterized in that, It further includes a double vibration damping fixed seat according to any one of claims 1-8, and the steering oil pipe (15) passes through the first central hole (4) in the first rubber bushing (1).

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