Vibration reduction bushing based on swing compensation

Abstract

The utility model belongs to the technical field of bushings, and particularly relates to a vibration reduction bushing based on swing compensation, which comprises a bushing outer layer, a bushing middle layer, a bushing inner layer and a ball seat, wherein the lining middle layer is installed in the lining outer layer, the elastic cushion is arranged between the lining middle layer and the lining outer layer, a spherical protrusion is arranged on the middle section of the lining inner layer, and the ball seat is installed in the lining middle layer and connected with the spherical protrusion in a swinging mode. According to the vibration reduction bushing, through the structural arrangement, axial swing compensation of the inner layer of the bushing can be achieved, and the situation that under the condition that the deflection angle between the inner layer and the outer layer of the bushing is small, the vibration reduction performance and the service life of the vibration reduction bushing are affected due to long-time compression and stretching of the rubber pad is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of bush, especially relates to a damping bush based on swing compensation. BACKGROUND

[0002] The both ends of automobile pull rod usually set up bush, and the bush can absorb and buffer the vibration and impact generated in the process of vehicle driving through the elastic deformation of itself, and the traditional bush usually only relies on the deformation of the elastic pad between the inner layer and the outer layer of the bush to work, the damping effect is poor, and in the case that there is small deflection between the inner layer and the outer layer of the bush, the elastic pad will be compressed and stretched for a long time, even if the degree of compression and stretching is small, the elasticity will be affected for a long time, thereby affecting the service life. SUMMARY

[0003] The utility model discloses in order to solve the technical problem existing in the prior art, provide a kind of damping bush based on swing compensation, reached increase damping effect, and in the case that there is small deflection between the inner layer and the outer layer of the bush, avoid the situation that elastic pad is compressed and stretched, avoid the effect of affecting service life.

[0004] Therefore, the utility model provides a kind of damping bush based on swing compensation, it includes:

[0005] The outer layer of bush;

[0006] The middle layer of bush is installed in the outer layer of bush, and is equipped with elastic pad between the outer layer of bush;

[0007] The inner layer of bush, middle section is equipped with spherical protrusion;

[0008] Ball seat is installed in the middle layer of bush, and is swinged with spherical protrusion.

[0009] In the above technical scheme, further, it further includes:

[0010] Stop ring is installed in the middle layer of bush, and is respectively located in the axial both ends of ball seat, and is used for limiting ball seat in axial direction.

[0011] In the above technical scheme, further:

[0012] First annular groove is set up on the inner wall of the middle layer of bush and is adapted to stop ring;

[0013] Wherein, the both ends of the middle layer of bush are curved to form fixed part along the radial direction to the side of axis.

[0014] In the above technical scheme, further, it further includes:

[0015] An oil seal is arranged at both ends of the inner layer of the bushing and between the inner layer of the bushing and the stop ring.

[0016] The lubricating cavity is formed between the inner layer of the bushing and the intermediate layer of the bushing, and the inner layer is coated with lubricating oil.

[0017] In the above technical solution, further:

[0018] The inner layer of the bushing is provided with an annular protrusion at both axial ends.

[0019] The second annular groove is formed in the stop ring, and one end of the oil seal is embedded in the second annular groove, and the other end abuts against the annular protrusion.

[0020] In the above technical solution, further:

[0021] The ball seat is provided with a through groove in the axial direction and a groove that is circumferentially and equidistantly distributed.

[0022] The groove is formed on the inner wall of the ball seat.

[0023] In the above technical solution, further:

[0024] The oscillation gap is formed between both ends of the inner layer of the bushing and both ends of the intermediate layer of the bushing.

[0025] The relative oscillation angle between the inner layer of the bushing and the intermediate layer of the bushing is 7-9°.

[0026] In the above technical solution, further:

[0027] The outer layer of the bushing and the elastic pad are both extended to the side away from the axis at one end in the axial direction to form a bend.

[0028] The beneficial effects of the present application are:

[0029] 1. By setting the intermediate layer of the bushing and the elastic pad between the intermediate layer and the outer layer of the bushing, and setting the ball-shaped protrusion on the inner layer of the bushing, the inner layer of the bushing can be axially oscillated to compensate for the small deflection angle between the inner layer of the bushing and the outer layer of the bushing, thereby avoiding long-term compression and stretching of the rubber pad and affecting the damping performance and service life of the rubber pad.

[0030] 2. By setting the stop ring, the first annular groove and the fixing part, the position of the ball seat can be fixed, the installation stability of the ball seat is improved, and the stability of the oscillation of the inner layer of the bushing is ensured.

[0031] 3. By setting the oil seal, cooperating with the inner layer of the bushing and the intermediate layer of the bushing, a lubricating cavity can be formed, and after being coated with lubricating oil, the rotating smoothness between the ball-shaped protrusion and the ball seat can be improved, and the noise caused by friction and jamming can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a structural schematic view of the utility model;

[0033] Figure 2 is a side view of the utility model;

[0034] Figure 3 is the utility model Figure 2 A-A section view in the utility model;

[0035] Figure 4 is the utility model's explosion view;

[0036] The marks in the figure are shown as follows: 1, bush outer layer;2, bush intermediate layer;20, fixed part;3, elastic pad;4, bush inner layer;5, spherical protrusion;6, ball seat;7, stop ring;8, first annular groove;9, oil seal;10, lubricating cavity;11, annular protrusion;12, second annular groove;13, through slot;14, recess;15, swing gap;16, elbow. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0038] Embodiment 1:

[0039] The embodiment provides a damping bush based on swing compensation, which comprises:

[0040] The bush outer layer 1;

[0041] The bush intermediate layer 2 is installed in the bush outer layer 1, and the elastic pad 3 is arranged between the bush outer layer 1 and the bush intermediate layer 2;

[0042] The bush inner layer 4, the middle section is provided with a spherical protrusion 5;

[0043] The ball seat 6 is installed in the bush intermediate layer 2, and is swing-connected with the spherical protrusion 5;

[0044] Among them, the elastic pad 3 can adopt rubber material, and is connected between the bush outer layer 1 and the bush intermediate layer 2 by vulcanization, while the spherical protrusion 5 and the bush inner layer 4 adopt an integral structure, and the ball seat 6 can adopt polyformaldehyde material.

[0045] It can be seen from the embodiment that the inner layer 4 of the bushing can be axially oscillated by setting the middle layer 2 of the bushing, setting the elastic pad 3 between the middle layer 2 and the outer layer 1 of the bushing, and setting the spherical protrusion 5 of the inner layer 4 of the bushing to cooperate with the ball seat 6 between the inner layer 4 and the middle layer 2 of the bushing, so that the deflection angle between the inner layer 4 and the outer layer 1 of the bushing is small, the compression and stretching of the rubber pad for a long time are avoided, and the damping performance and service life of the rubber pad are affected.

[0046] Embodiment 2:

[0047] The embodiment provides a damping bushing based on oscillation compensation, which comprises the technical scheme of the above-mentioned embodiments and the following technical features.

[0048] The stop ring 7 is installed in the middle layer 2 of the bushing and located at the axial two ends of the ball seat 6, and is used for limiting the axial movement of the ball seat 6.

[0049] It can be seen from the embodiment that the axial limitation of the ball seat 6 is facilitated by the stop ring 7, the stability of the installation of the ball seat 6 is improved, and the structure is simple, the installation is convenient, and the production efficiency is high.

[0050] Embodiment 3:

[0051] The embodiment provides a damping bushing based on oscillation compensation, which comprises the technical scheme of the above-mentioned embodiments and the following technical features.

[0052] A first annular groove 8 adapted to the stop ring 7 is formed in the inner wall of the middle layer 2 of the bushing.

[0053] The two ends of the middle layer 2 of the bushing are curved to form a fixed part 20 along the radial direction to the side of the shaft.

[0054] It can be seen from the embodiment that the installation stability of the stop ring 7 is improved by the first annular groove 8 and the fixed part 20, so that the installation stability of the ball seat 6 is ensured, and the axial movement of the ball seat 6 is avoided.

[0055] Embodiment 4:

[0056] The embodiment provides a damping bushing based on oscillation compensation, which comprises the technical scheme of the above-mentioned embodiments and the following technical features.

[0057] The oil seal 9 is sleeved at the two ends of the inner layer 4 of the bushing and located between the inner layer 4 of the bushing and the stop ring 7.

[0058] The lubricating cavity 10 is formed between the inner layer 4 of the bushing and the middle layer 2 of the bushing, and the inside is coated with lubricating oil.

[0059] The embodiment can see that, through the setting of the oil seal 9, cooperating with the bushing inner layer 4 and the bushing middle layer 2, the lubricating cavity 10 can be formed, and after being coated with lubricating oil, the rotating smooth effect between the spherical protrusion 5 and the ball seat 6 can be improved, and the noise generated by friction and jamming can be reduced.

[0060] Embodiment 5:

[0061] The embodiment provides a damping bushing based on swing compensation, in addition to the technical solutions of the above-mentioned embodiments, further has the following technical features:

[0062] The bushing inner layer 4 is provided with annular protrusions 11 at both axial ends;

[0063] The second annular groove 12 is arranged on the stop ring 7, and one end of the oil seal 9 is embedded in the second annular groove 12, and the other end is in abutment with the annular protrusion 11;

[0064] The annular protrusion 11 and the bushing inner layer 4 adopt an integral structure, and the oil seal 9 can adopt a J shape.

[0065] The embodiment can see that, through the setting of the annular protrusions 11 at both axial ends of the bushing inner layer 4 and the second annular groove 12 on the stop ring 7, the oil seal 9 can be limited in position, the installation precision of the oil seal 9 is improved, the leakage of lubricating oil is avoided, the long-term effectiveness of lubrication is ensured, and the structural stability of the oil seal 9 is improved, and the sealing performance of the oil seal 9 is not affected by the axial deflection of the bushing inner layer 4 and the bushing middle layer 2.

[0066] Embodiment 6:

[0067] The embodiment provides a damping bushing based on swing compensation, in addition to the technical solutions of the above-mentioned embodiments, further has the following technical features:

[0068] The ball seat 6 is provided with a through groove 13 and a groove 14 distributed at equal intervals in the circumference of the through groove 13 along the axial direction;

[0069] The groove 14 is arranged on the inner wall of the ball seat 6.

[0070] The embodiment can see that, through the setting of the through groove 13, the ball seat 6 can be conveniently sleeved on the spherical protrusion 5 of the bushing inner layer 4, and the convenience of installing the ball seat 6 is improved;

[0071] And the groove 14 distributed at equal intervals in the circumference of the through groove 13 can make the ball seat 6 have a certain elastic deformation capacity, when the bushing inner layer 4 and the bushing middle layer 2 produce axial deflection, the ball seat 6 will produce a certain elastic deformation, which can facilitate the lubricating oil to flow between the surface of the spherical protrusion 5 and the inner wall of the ball seat 6, increase the lubricating effect, and reduce the wear of the ball seat 6;

[0072] Meanwhile, the groove 14 can also facilitate the storage of lubricating oil, and enhance the lubricating effect on the surface of the spherical protrusion 5.

[0073] Embodiment 7:

[0074] The embodiment provides a damping bushing based on swing compensation, and has the following technical features in addition to the technical solutions in the above embodiments.

[0075] The swing gap 15 is formed between the two ends of the inner layer 4 of the bushing and the two ends of the middle layer 2 of the bushing.

[0076] The swing angle between the inner layer 4 of the bushing and the middle layer 2 of the bushing is 7-9°.

[0077] Meanwhile, the swing angle can be 8°.

[0078] It can be seen that, by arranging the swing gap 15, the axial deflection between the inner layer 4 of the bushing and the middle layer 2 of the bushing is facilitated to be hindered, swing compensation is facilitated, the swing angle is limited to 7-9°, the swing angle is prevented from being too large to affect the stability of the bushing, or the swing angle is prevented from being too small to improve the damping performance and service life of the rubber pad.

[0079] Embodiment 8:

[0080] The embodiment provides a damping bushing based on swing compensation, and has the following technical features in addition to the technical solutions in the above embodiments.

[0081] The outer layer 1 of the bushing and the elastic pad 3 are extended to the side away from the shaft center along the axial direction to form a bend 16.

[0082] The bend 16 formed by the outer layer 1 of the bushing is in an integral structure with the outer layer 1 of the bushing, and the bend 16 formed by the elastic pad 3 is in an integral structure with the elastic pad 3.

[0083] It can be seen that, by arranging the bend 16, the sealing effect of the outer side of the bushing can be enhanced, the elastic pad 3 can better fit the outer layer 1 of the bushing, and the impact force from the outer side of the bushing can be buffered and damped, and the stability of the bushing is improved.

[0084] The embodiments of the application are described above in combination with the drawings, and the embodiments and the features in the embodiments in the application can be combined with each other without conflict, the application is not limited to the above specific embodiments, the above specific embodiments are only illustrative but not restrictive, and those skilled in the art can make many forms under the guidance of the application without departing from the purpose of the application and the protection range of the claims, and all the forms belong to the protection of the application.

Claims

1. A vibration damping bushing based on sway compensation, characterized in that, include: Outer layer of bushing (1); The bushing intermediate layer (2) is installed inside the bushing outer layer (1), and an elastic pad (3) is provided between it and the bushing outer layer (1); The inner layer of the bushing (4) has a spherical protrusion (5) in the middle section; The ball seat (6) is installed inside the bushing intermediate layer (2) and is oscillatingly connected to the spherical protrusion (5).

2. The vibration damping bushing based on sway compensation according to claim 1, characterized in that, Also includes: The retaining ring (7) is installed in the bushing intermediate layer (2) and is located at both ends of the ball seat (6) in the axial direction, and is used to limit the ball seat (6) in the axial direction.

3. The vibration damping bushing based on sway compensation according to claim 2, characterized in that: The inner wall of the bushing intermediate layer (2) is provided with a first annular groove (8) that is adapted to the stop ring (7); The bushing intermediate layer (2) has two ends bent radially toward one side of the axis to form a fixing part (20).

4. The vibration damping bushing based on sway compensation according to claim 2, characterized in that, Also includes: Oil seal (9) is fitted on both ends of the inner layer (4) of the bushing and is located between the inner layer (4) of the bushing and the stop ring (7); The inner layer (4) of the bushing and the middle layer (2) of the bushing form a lubrication cavity (10), and the cavity is coated with lubricating oil.

5. The vibration damping bushing based on sway compensation according to claim 4, characterized in that: The inner layer (4) of the bushing has annular protrusions (11) at both ends of the axial direction; The stop ring (7) has a second annular groove (12), and one end of the oil seal (9) is embedded in the second annular groove (12), while the other end abuts against the annular protrusion (11).

6. The vibration damping bushing based on sway compensation according to claim 4, characterized in that: The ball seat (6) is provided with a through groove (13) along the axial direction and grooves (14) that are equally spaced around the circumference of the through groove (13); The groove (14) is formed on the inner wall of the ball seat (6).

7. The vibration damping bushing based on sway compensation according to claim 1, characterized in that: A swing gap (15) is formed between the two ends of the inner layer (4) of the bushing and the two ends of the middle layer (2) of the bushing; The relative swing angle between the inner layer (4) and the middle layer (2) of the bushing is 7-9°.

8. The vibration damping bushing based on sway compensation according to claim 1, characterized in that: The outer layer of the bushing (1) and the elastic pad (3) both extend axially away from the axis to form an elbow (16).

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