CN213145194U

CN213145194U - Inner sleeve of high-strength shock absorber bushing

Info

Publication number: CN213145194U
Application number: CN202021410559.9U
Authority: CN
Inventors: 翁宣章; 李俊凯; 俞惠法; 徐伟波
Original assignee: Ningbo Huahong Machinery Co ltd
Current assignee: Ningbo Huahong Machinery Co ltd
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2021-05-07
Anticipated expiration: 2030-07-16

Abstract

The application relates to an inner sleeve of a high-strength shock absorber bushing, and belongs to the technical field of automobile parts. The connecting device comprises a first abutting part, a connecting part and a second abutting part from one end to the other end, mounting holes penetrating through the first abutting part, the connecting part and the second abutting part in sequence are formed in the mounting holes, an extrusion groove is formed in the middle of the inner wall of the connecting part, and an elastic extrusion block is arranged in the extrusion groove. The application has the advantage that the shaft is difficult to move relative to the inner sleeve.

Description

Inner sleeve of high-strength shock absorber bushing

Technical Field

The application relates to the technical field of automobile parts, in particular to an inner sleeve of a high-strength shock absorber bushing.

Background

Bushings are a class of components that protect equipment. The use of the bushing can reduce the abrasion, vibration and noise of the equipment and has the effect of corrosion prevention. The use of the bushing also facilitates maintenance of the mechanical equipment, simplifying the structure and manufacturing process of the equipment. The bushing is arranged between the connecting rod and the crankshaft, and has the main functions of damping, insulating noise, reducing fatigue, prolonging the service life and playing an important role in the operation stability of the vehicle.

The existing bushing generally comprises a bushing outer tube, a bushing liner tube, a rubber bushing and an inner sleeve tube, wherein the inner sleeve tube is arranged in the rubber liner tube through vulcanization connection, the rubber bushing is fixed in the bushing liner tube through interference fit, the bushing liner tube is press-mounted in the bushing outer tube through interference fit, and the inner sleeve tube is used for being fixed with a shaft part and reducing abrasion of the shaft part.

The existing inner sleeve is a hollow stepped cylinder as shown in figure 1, and has a small middle outer diameter and large two ends outer diameter.

With respect to the related art among the above, the inventors consider that there is a drawback that the shaft member is easily moved.

SUMMERY OF THE UTILITY MODEL

In order to solve the defect that a shaft element easily moves in an inner sleeve, the application provides the inner sleeve of the high-strength shock absorber bushing.

The application provides a high strength bumper shock absorber bush's interior sleeve pipe adopts following technical scheme:

the utility model provides an interior sleeve pipe of high strength bumper shock absorber bush, includes first butt portion, connecting portion and second butt portion from one end to the other end to set up the mounting hole that runs through first butt portion, connecting portion and second butt portion in proper order, the extrusion groove has been seted up at the middle part of the inner wall of connecting portion, be provided with the elasticity extrusion piece in the extrusion groove.

Through adopting above-mentioned technical scheme, through seting up extrusion groove installation elasticity extrusion piece in the spread groove for the pore wall in mounting hole middle part can warp, and the friction between elasticity extrusion piece and the axle piece is bigger, and the axle piece is difficult to the drunkenness when receiving external force.

Preferably, the middle part of the connecting part protrudes outwards to form a squeezing part, and the diameter of the squeezing part is gradually reduced from the middle part to the two ends.

Through adopting above-mentioned technical scheme, set up the extrusion portion, make the position that the extrusion groove was seted up to the mounting hole keep certain thickness, keep interior sheathed tube intensity, extrusion portion is because the middle part is salient simultaneously, when receiving the exogenic action, the extrusion portion extrudees with outside rubber bush more easily, extrusion portion produces certain deformation, thereby produce the extrusion to the elasticity extrusion piece in the extrusion groove, further improve the frictional force between elasticity extrusion piece and the shaft member, set up bellied extrusion portion simultaneously, make the joint strength between interior sleeve pipe and the rubber bush more difficult to break away from each other.

Preferably, a plurality of filling extrusion holes are formed in both ends of the outer wall of the extrusion part, and the filling extrusion holes are communicated with the extrusion grooves.

Through adopting above-mentioned technical scheme, set up and fill the extrusion hole for when rubber bush and interior sleeve pipe vulcanization are fixed, rubber bush can be fixed into and fill in the extrusion piece, further improve the joint strength between rubber bush and the interior sleeve pipe, during the automobile vibration simultaneously, rubber bush receives interior sheathed tube extrusion easily, makes the part that rubber bush is located and fills the extrusion piece can extrude elasticity extrusion piece, further improves the frictional force between elasticity extrusion piece and the shaft spare, makes the shaft spare be difficult to the drunkenness more.

Preferably, the hole wall of the filling extrusion hole is provided with an annular groove.

Through adopting above-mentioned technical scheme, set up the annular for the joint strength between the pore wall that the rubber bush is located the part of filling the extrusion hole and fills the extrusion hole is higher, provides the resilience for the rubber bush, makes the rubber bush that fills in the extrusion hole can be better reconversion sooner after warping.

Preferably, the side walls of the first abutting portion and the second abutting portion, which are away from each other, are provided with a plurality of abutting blocks.

Through adopting above-mentioned technical scheme, the butt joint piece that sets up plays the effect the same with the gasket, reduces the wearing and tearing of the lateral wall that first butt portion and second butt portion carried on the back mutually.

Preferably, the side walls of the first abutting part and the second abutting part which deviate from each other are provided with caulking grooves, and the abutting block is partially embedded in the caulking grooves.

Through adopting above-mentioned technical scheme, the butt piece adopts the mode of inlaying the dress to install, makes things convenient for the change of butt piece.

Preferably, the hole wall of the mounting hole is coated with a wear-resistant coating.

By adopting the technical scheme, the wear-resistant coating is coated on the hole wall of the mounting hole, so that the wear resistance of the hole wall of the mounting hole is improved, and the service life of the inner sleeve is indirectly prolonged.

Preferably, the surface of the wear-resistant coating is provided with anti-skid lines.

Through adopting above-mentioned technical scheme, through setting up anti-skidding line at wear-resistant coating, improve the coefficient of friction of the pore wall of mounting hole, further reduce the axial float between axle piece and the interior sleeve pipe, the interior sheathed tube wearing and tearing are reduced indirectly, improve interior sleeve pipe life-span.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the elastic extrusion block is arranged in the extrusion groove arranged in the connecting groove, so that the hole wall in the middle of the mounting hole can deform, the friction between the elastic extrusion block and the shaft piece is larger, and the shaft piece is not easy to move when being subjected to external force;

2. the extrusion part is arranged, so that the position of the extrusion groove formed in the mounting hole is kept at a certain thickness, the strength of the inner sleeve is kept, meanwhile, the extrusion part is protruded in the middle, when the extrusion part is subjected to an external force, the extrusion part is more easily extruded with an external rubber bushing, the extrusion part is deformed to a certain degree, so that an elastic extrusion block in the extrusion groove is extruded, the friction force between the elastic extrusion block and a shaft piece is further improved, and meanwhile, the convex extrusion part is arranged, so that the connection strength between the inner sleeve and the rubber bushing is higher and is not easy to separate from each other;

3. set up and fill the extrusion hole for when rubber bush and interior sleeve pipe vulcanization are fixed, rubber bush can be fixed into and fill in the extrusion piece, further improve the joint strength between rubber bush and the interior sleeve pipe, during automobile vibration, rubber bush receives interior sheathed tube extrusion easily simultaneously, makes the part that rubber bush is located to fill the extrusion piece can extrude elasticity extrusion piece, further improves the frictional force between elasticity extrusion piece and the axle piece, makes the axle piece be difficult to the drunkenness more.

Drawings

Fig. 1 is a schematic structural diagram 1 of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is a schematic structural diagram 2 of the present invention;

fig. 4 is a schematic view of a partial structure of the present invention.

Reference numerals: 1. a first abutting portion; 2. a connecting portion; 3. a second abutting portion; 4. mounting holes; 5. a pressing section; 51. extruding a groove; 52. filling the extrusion hole; 53. a ring groove; 54. an elastic extrusion block; 541. a through hole; 6. caulking grooves; 7. and a butt joint block.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses interior sleeve pipe of high strength bumper shock absorber bush. Referring to fig. 1 and 2, an inner sleeve of a high-strength damper bushing includes a first abutting portion 1, a connecting portion 2, and a second abutting portion 3 in sequence from one end to the other end, the first abutting portion 1, the connecting portion 2, and the second abutting portion 3 are coaxial, a hole inside the inner sleeve is provided as a mounting hole 4, and the mounting hole 4 penetrates through the first abutting portion 1, the connecting portion 2, and the second abutting portion 3 in sequence.

The wall of the mounting hole 4 is coated with a wear-resistant coating, in this embodiment, a wear-resistant coating adhesive is used, and anti-slip lines (not shown in the figure) are processed on the surface of the wear-resistant coating, in this embodiment, the anti-slip lines are in the form of coating the surface of the wear-resistant coating with a rough surface.

Connecting portion 2 middle part is outside protruding to be set up to extrusion portion 5, and extrusion portion 5 reduces to both ends diameter along middle gradually, and extrusion groove 51 has been seted up to the inner wall of extrusion portion 5 for the wall thickness of extrusion portion 5 keeps unanimous, installs elasticity extrusion piece 54 in the extrusion groove 51, and elasticity extrusion piece 54 fills extrusion groove 51, and elasticity extrusion piece 54 sets up the through hole 541 coaxial with mounting hole 4.

A plurality of filling extrusion holes 52 are formed at two ends of the extrusion part 5, the filling extrusion holes 52 are communicated with the extrusion groove 51 and penetrate through the extrusion part 5, and a ring groove 53 is formed in the hole wall of each filling extrusion hole 52. In the present embodiment, four filling and squeezing holes 52 are provided at each end of the squeezing portion 5, and the four filling and squeezing holes 52 are provided at intervals in the circumferential direction of the connecting portion 2.

Referring to fig. 1 and 3, a plurality of abutting blocks 7 are disposed on a side wall of the first abutting portion 1 away from the second abutting portion 3, a plurality of abutting blocks 7 are also disposed on a side wall of the second abutting portion 3 away from the first abutting portion 11, eight abutting blocks 7 are disposed on the first abutting portion 1 in this embodiment, and the eight abutting blocks 7 are disposed at intervals along the circumferential direction of the first abutting portion 1.

Eight abutting blocks 7 are arranged on the second abutting portion 3, the eight abutting blocks 7 are arranged at intervals along the circumferential direction of the second abutting portion 3, and connecting lines of the eight abutting blocks 7 on the first abutting portion 1 are in one-to-one correspondence with the eight abutting blocks 7 on the second abutting portion 3 along the axis direction of the inner sleeve.

The side walls of the first abutting part 11 and the second abutting part 33 which depart from each other are provided with embedding grooves 66, and part of the abutting block 7 is inserted into the embedding grooves 6 in an interference manner (compare with fig. 4).

The implementation principle of the inner sleeve of the high-strength shock absorber bushing is as follows: when the automobile vibrates, the extrusion is generated between the shaft piece and the inner sleeve, the inner sleeve extrudes the rubber bushing, when the extrusion is performed, the part of the rubber bushing, which is positioned in the filling extrusion hole 52, extrudes the elastic extrusion block 54, meanwhile, the extrusion part 5 also has certain deformation capacity, and further extrudes the elastic extrusion block 54, and the elastic extrusion block 54 is pressed to deform and extrude the shaft piece, so that the shaft piece is not easy to axially move in the inner sleeve.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an interior sleeve pipe of high strength bumper shock absorber bush which characterized in that: the connecting device comprises a first abutting part (1), a connecting part (2) and a second abutting part (3) from one end to the other end, a mounting hole (4) which penetrates through the first abutting part (1), the connecting part (2) and the second abutting part (3) in sequence is formed in the mounting hole, an extrusion groove (51) is formed in the middle of the inner wall of the connecting part (2), and an elastic extrusion block (54) is arranged in the extrusion groove (51).

2. The inner bushing of a high strength shock absorber bushing according to claim 1, wherein: the connecting portion (2) middle part is outwards protruding to be set up as extrusion portion (5), just extrusion portion (5) reduce to both ends diameter along the centre gradually.

3. The inner bushing of a high strength shock absorber bushing according to claim 2, wherein: a plurality of filling extrusion holes (52) are formed in the two ends of the outer wall of the extrusion part (5), and the filling extrusion holes (52) are communicated with the extrusion groove (51).

4. The inner bushing of a high strength shock absorber bushing according to claim 3, wherein: and the hole wall of the filling extrusion hole (52) is provided with an annular groove (53).

5. The inner bushing of a high strength shock absorber bushing according to claim 4, wherein: the side walls of the first abutting part (1) and the second abutting part (3) which deviate from each other are provided with a plurality of abutting blocks (7).

6. The inner bushing of a high strength shock absorber bushing according to claim 5, wherein: caulking grooves (6) are formed in the side walls, deviating from each other, of the first abutting portion (1) and the second abutting portion (3), and the abutting block (7) is partially embedded in the caulking grooves (6).

7. The inner bushing of a high strength shock absorber bushing according to claim 6, wherein: the wall of the mounting hole (4) is coated with a wear-resistant coating.

8. The inner bushing of a high strength shock absorber bushing according to claim 7, wherein: and anti-skid grains are arranged on the surface of the wear-resistant coating.