CN210003726U

CN210003726U - Rubber bushing

Info

Publication number: CN210003726U
Application number: CN201920585616.8U
Authority: CN
Inventors: 杨健; 胡志刚
Original assignee: Beijing Changcheng Huaguan Automobile Technology Development Co Ltd
Current assignee: CH Auto Technology Co Ltd; Beijing Changcheng Huaguan Automobile Technology Development Co Ltd
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-01-31
Anticipated expiration: 2029-04-26

Abstract

The utility model discloses an rubber bush, it includes inner frame, exoskeleton and connects the connecting portion of inner frame and exoskeleton, the quantity of connecting portion is at least two, the surface of inner frame be formed with circular cone surface and the second circular cone surface of inner frame coaxial axle, circular cone surface with the second circular cone surface is located between two connecting portions, the internal face of exoskeleton be formed with the exoskeleton coaxial axle bulge, the bulge is located between two connecting portions, the utility model discloses a form circular cone surface and second circular cone surface on the inner frame of rubber bush, and the exoskeleton forms the bulge, can ensure that the rubber compounding agent can not contact by a large scale and produce the abnormal sound to can also ensure the mobility of rubber compounding agent, can not produce rubber compounding agent and pile up and produce fatigue damage, guarantee rubber bush endurance characteristic.

Description

Rubber bushing

Technical Field

The utility model relates to an kinds of vehicle shock attenuation parts especially relate to kinds of rubber bushings.

Background

In the design of the existing automobile chassis, a large number of flexible body connections such as rubber bushings are adopted to meet the requirements of vibration isolation and noise reduction of a vehicle, required wheel kinematics characteristics are obtained, and therefore the accurate design of the chassis also needs to be matched with performance parameters of the rubber bushings in all directions.

The rubber anisotropic property is realized by the rubber formula, the structural form change of the inner frame of the bushing, the addition of the frame in the rubber compounding agent and the addition of the damping hole in the rubber bushing, and the traditional rubber bushing is difficult to ensure the anisotropic property curve, NVH (noise vibration noise inside the rubber bushing) property and durability property.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing kinds of rubber bushings, it has solved among the above-mentioned technical problem at least.

The technical scheme adopted by the utility model is that rubber bushings comprise an inner framework, an outer framework and a connecting part for connecting the inner framework and the outer framework;

the number of the connecting parts is at least two;

th conical surface and a second conical surface which are coaxial with the inner framework are formed on the outer surface of the inner framework, wherein the th conical surface and the second conical surface are positioned between the two connecting parts;

the inner wall surface of the outer framework is provided with a protrusion part which is coaxial with the outer framework, and the protrusion part is positioned between the two connecting parts.

Optionally, the connecting portions are uniformly distributed along the circumferential direction of the inner frame.

Optionally, the diameter of the junction of the th conical surface and the second conical surface is the diameter of the th conical surface and the th end of the second conical surface.

Optionally, a plurality of V-shaped grooves are formed on the inner wall surface of the protruding portion along the circumferential direction of the protruding portion.

Optionally, an included angle a between a generatrix of the -th conical surface and an axis of the inner frame, and an included angle b between the generatrix of the second conical surface and the axis of the inner frame are both greater than 0 ° and less than or equal to 15 °.

Optionally, a semicircular protrusion or a semicircular groove is formed on the th conical surface along the generatrix direction;

the radius of the semicircular bulge and/or the radius of the semicircular groove are larger than or equal to 0.5mm and smaller than or equal to 1.5 mm; the distance between the two semicircular bulges and/or the distance between the two semicircular grooves are both larger than or equal to 0.5mm and smaller than or equal to 1.5 mm.

Optionally, the diameter of the semicircular protrusion is the same as the distance between the two semicircular protrusions.

Optionally, the diameter of the semicircular groove is the same as the distance between the two semicircular grooves.

Optionally, the diameter of the middle part of the protruding part along the axial direction of the outer frame is smaller than the diameters of the two ends of the protruding part.

Optionally, the rubber bushing further includes a middle support portion, the middle support portion is disposed at a middle position of the rubber bushing in the axial direction and is connected to the inner frame, the outer frame and the two connecting portions respectively.

The utility model has the advantages of the utility model discloses a form circular cone surface and second circular cone surface on rubber bush's inner frame, and the exoskeleton forms the bulge, can ensure that the rubber compounding ingredient can not contact by a large scale and produce the abnormal sound to can also ensure the mobility of rubber compounding ingredient, can not produce the rubber compounding ingredient and pile up and produce fatigue damage, guarantee rubber bush endurance characteristic.

Drawings

FIG. 1 is a schematic structural view of a rubber bushing according to the present invention;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

FIG. 3 is a schematic structural view of the rubber bushing of the present invention;

fig. 4 is another schematic structural diagram of the rubber bushing of the present invention;

the reference numbers in the figures mean 1-inner skeleton, 2-outer skeleton, 3-connecting part, 4- th conical surface, 5-second conical surface, 6-convex part, 7-semicircular convex part and 8-middle supporting part.

Detailed Description

The technical solution of the present invention is further illustrated in steps by referring to the following embodiments and the accompanying drawings.

Example 1

The present embodiment provides kinds of rubber bushings, which include an inner frame, an outer frame, and a connecting portion connecting the inner frame and the outer frame.

In this embodiment, the number of connecting portion is at least two, just connecting portion follow the hoop evenly distributed of inner frame.

The outer surface of the inner framework is provided with th conical surface and a second conical surface which are coaxial with the inner framework, the diameter of the connecting part of the th conical surface and the second conical surface is equal to that of the other end of the th conical surface and the second conical surface, and the th conical surface and the second conical surface are positioned between the two connecting parts.

More preferably, an included angle a between a generatrix of the -th conical surface and an axis of the inner frame, and an included angle b between a generatrix of the second conical surface and an axis of the inner frame are both greater than 0 ° and equal to or less than 15 °.

More preferably, the th conical surface and/or the second conical surface are/is formed with semicircular protrusions or semicircular grooves along the generatrix direction, wherein the radius of the semicircular protrusions and/or the radius of the semicircular grooves are both larger than or equal to 0.5mm and smaller than or equal to 1.5mm, and the distance between the two semicircular protrusions and/or the distance between the two semicircular grooves are both larger than or equal to 0.5mm and smaller than or equal to 1.5 mm.

In this embodiment, more preferably, the diameter of the semicircular protrusion is the same as the distance between the two semicircular protrusions; the diameter of the semicircular groove is the same as the distance between the two semicircular grooves.

The inner wall surface of the outer framework is provided with a protrusion part which is coaxial with the outer framework, the protrusion part is positioned between the two connecting parts, and the inner wall surface of the protrusion part is provided with a plurality of V-shaped grooves along the circumferential direction.

In this embodiment, the diameter of the middle portion of the protruding portion in the axial direction of the outer frame is smaller than the diameters of both ends of the protruding portion, that is, the middle portion of the protruding portion protrudes inward.

As another realization forms, the rubber bushing further includes a middle support portion disposed at a middle position in an axial direction of the rubber bushing and connected to the inner frame, the outer frame, and the two connection portions, respectively.

The utility model discloses a form circular cone surface and second circular cone surface on rubber bush's inner frame, and the exoskeleton forms the bulge, can ensure that the rubber compounding ingredient can not contact by a large scale and produce the abnormal sound to can also ensure the mobility of rubber compounding ingredient, can not produce the rubber compounding ingredient and pile up and produce fatigue damage, guarantee rubber bush endurance characteristic.

The sequence of the above embodiments is only for convenience of description and does not represent the advantages and disadvantages of the embodiments.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1, rubber bushings, which are characterized by comprising an inner framework, an outer framework and a connecting part for connecting the inner framework and the outer framework;

the number of the connecting parts is at least two;

2. The rubber bushing of claim 1, wherein the connecting portions are evenly distributed in a circumferential direction of the inner frame.

3. The rubber bushing of claim 1, wherein the diameter at the junction of the th conical surface and the second conical surface is the diameter of the th conical surface and the th end of the second conical surface.

4. The rubber bushing according to claim 1, wherein a plurality of V-grooves are formed in an inner wall surface of the protrusion along a circumferential direction thereof.

5. The rubber bushing according to claim 1, wherein an angle a between a generatrix of the -th conical surface and an axis of the inner frame, and an angle b between a generatrix of the second conical surface and an axis of the inner frame are each greater than 0 ° and equal to or less than 15 °.

6. The rubber bushing of claim 5, wherein the th conical surface is formed with a semicircular protrusion or a semicircular groove along the generatrix direction thereof, and the second conical surface is formed with a semicircular protrusion or a semicircular groove along the generatrix direction thereof;

7. The rubber bushing of claim 6, wherein a diameter of the semicircular protrusion is the same as a distance between the two semicircular protrusions.

8. The rubber bushing of claim 6, wherein a diameter of the semi-circular groove is the same as a distance between the two semi-circular grooves.

9. The rubber bushing according to claim 1, wherein a middle diameter of the protrusion in an axial direction of the outer frame is smaller than diameters of both ends of the protrusion.

10. The rubber bushing according to claim 1, further comprising a middle support portion provided at a middle position in an axial direction of the rubber bushing and connected to the inner frame, the outer frame, and the two connection portions, respectively.