CN213039681U

CN213039681U - Polyurethane bushing

Info

Publication number: CN213039681U
Application number: CN202022051163.6U
Authority: CN
Inventors: 陈美美
Original assignee: Taishan Dacheng Industrial Development Co ltd
Current assignee: Taishan Dacheng Industrial Development Co ltd
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2021-04-23
Anticipated expiration: 2030-09-17

Abstract

The utility model discloses a polyurethane bushing, including outer liner and neck bush, the neck bush establish on the outer liner inside wall, the outer liner inside wall be equipped with the recess that a plurality of is used for depositing the grease, the neck bush on be equipped with the through-hole that corresponds with the recess, the utility model provides a long service life's polyurethane bushing.

Description

Polyurethane bushing

Technical Field

The utility model relates to a vehicle bush technical field especially relates to a polyurethane bush.

Background

When processing the polyurethane bushing of the truck and the passenger car in the field of automobile accessories, the main step is to directly vulcanize the polyurethane on the bushing body. According to the prior art, the lining is easy to wear after being used for a long time, and the service life is short.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the defects of the prior art are overcome, and the polyurethane bushing with long service life is provided.

In order to realize the purpose, the technical scheme of the utility model is that:

a polyurethane bushing comprises an outer bushing and an inner bushing, wherein the inner bushing is arranged on the inner side wall of the outer bushing, a plurality of grooves used for storing grease are formed in the inner side wall of the outer bushing, and through holes corresponding to the grooves are formed in the inner bushing.

After the structure more than adopting, compared with the prior art, the utility model has the following advantage: establish the recess at the outer bush inside wall, establish the through-hole that corresponds with the recess simultaneously on the inner bush, the recess is used for gathering and deposits the grease in order to prolong lubricated persistence, gathers the grease through the through-hole and exists the recess in, lubricated effectual, long service life.

Preferably, the shape of the groove is hemispherical, so that grease can be conveniently accumulated in the groove.

Preferably, the depth of the groove is 0.7 mm-1.2 mm, preferably 0.7mm, 1mm or 1.2mm, and the grease accumulation effect is good.

Preferably, the radius of the corresponding sphere of the groove is 2.5 mm-3.3 mm, preferably 2.5mm, 3mm or 3.3mm, so that more grease can be accumulated and the strength of the outer lining can be ensured.

Preferably, both ends are equipped with first seal lip and second seal lip respectively about the interior bush, first seal lip and second seal lip all be located the outer liner inner wall, utilize first seal lip and second seal lip to seal the clearance between interior bush and the outer liner, reduce the grease and leak for dustproof, prevent silt and waterproof, the reliability is high.

Preferably, a first channel, a second channel and a third channel are sequentially arranged in the outer bushing from left to right, the first channel, the second channel and the third channel are sequentially communicated, the inner bushing is arranged in the second channel, the left end of the first sealing lip is positioned in the first channel, the right end of the first sealing lip abuts against the left end face of the inner bushing, the right end of the second sealing lip is positioned in the third channel, and the left end of the second sealing lip abuts against the right end face of the inner bushing, so that the first sealing lip and the second sealing lip can be conveniently arranged.

Preferably, the first sealing lip comprises a first annular bulge and a second annular bulge, the first annular bulge is arranged in the first channel, the second annular bulge is located in the second channel, the cross section of the first annular bulge is in an isosceles trapezoid shape, the cross section of the second annular bulge is in a rectangular shape, the length of the rectangular shape is equal to the upper bottom of the isosceles trapezoid shape, the sealing effect is good, the second annular bulge is clamped in the second channel, and the first annular bulge is clamped in the first channel.

Preferably, the second sealing lip comprises a third annular protrusion, a fourth annular protrusion, a fifth annular protrusion and a sixth annular protrusion, the third annular protrusion, the fourth annular protrusion, the fifth annular protrusion and the sixth annular protrusion are sequentially arranged from left to right, the third annular protrusion is located in the second channel, the fourth annular protrusion, the fifth annular protrusion and the sixth annular protrusion are all located in the third channel, the cross sections of the third annular protrusion, the fourth annular protrusion and the sixth annular protrusion are all rectangular, the cross section of the fifth annular protrusion is isosceles trapezoid, the upper bottom of the fifth annular protrusion is equal to the length of the rectangle of the sixth annular protrusion, the lower bottom of the fifth annular protrusion is equal to the length of the rectangle of the fourth annular protrusion, and the length of the rectangle of the third annular protrusion is greater than the length of the rectangle of the fourth annular protrusion, the sealing effect is good, the third annular bulge is clamped in the second channel, and the fourth annular bulge, the fifth annular bulge and the sixth annular bulge are clamped in the third channel.

Drawings

Fig. 1 is a front sectional view of a urethane bushing according to the present invention;

FIG. 2 is an enlarged schematic view of A of FIG. 1;

fig. 3 is an enlarged schematic view of B in fig. 1.

The sealing structure comprises an outer bushing, an inner bushing, a groove, a through hole, a first sealing lip, a second sealing lip, a first channel, a second channel, a third channel, a first annular bulge, a second annular bulge, a third annular bulge, a fourth annular bulge, a fifth annular bulge, a sixth annular bulge, a first channel, a second channel, a third channel, a fourth channel, a groove, a second channel, a through hole, a first sealing lip, a second sealing lip.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

As shown in fig. 1, the utility model provides a polyurethane bushing, including outer liner 1 and neck bush 2, neck bush 2 establish on outer liner 1 inside wall, 1 inside wall of outer liner be equipped with the recess 3 that a plurality of is used for depositing the grease, neck bush 2 on be equipped with the through-hole 4 that corresponds with recess 3, the utility model has the advantages that establish recess 3 at outer liner 1 inside wall, establish the through-hole 4 that corresponds with recess 3 on neck bush 2 simultaneously, recess 3 is used for gathering the grease and in order to prolong lubricated persistence, gathers the grease through-hole 4 and exists recess 3, and is lubricated effectual, long service life.

The groove 3 is hemispherical, so that grease can be conveniently accumulated in the groove 3.

The depth of the groove 3 is 0.7 mm-1.2 mm, preferably 0.7mm, 1mm or 1.2mm, and the grease accumulation effect is good.

The radius of the corresponding sphere of the groove 3 is 2.5 mm-3.3 mm, preferably 2.5mm, 3mm or 3.3mm, and more grease can be accumulated while the strength of the outer liner 1 is ensured.

Interior bush 2 about both ends be equipped with first seal lip 5 and second seal lip 6 respectively, first seal lip 5 and second seal lip 6 all be located 1 inner wall of outer liner, utilize first seal lip 5 and second seal lip 6 to seal the clearance between interior bush 2 and the outer liner 1, reduce the grease and leak for dustproof, prevent silt and waterproof, the reliability is high.

The outer bushing 1 is internally provided with a first channel 7, a second channel 8 and a third channel 9 in sequence from left to right, the first channel 7, the second channel 8 and the third channel 9 are communicated in sequence, the inner bushing 2 is arranged in the second channel 8, the left end of the first sealing lip 5 is positioned in the first channel 7, the right end of the first sealing lip 5 is abutted against the left end surface of the inner bushing 2, the right end of the second sealing lip 6 is positioned in the third channel 9, and the left end of the second sealing lip 6 is abutted against the right end surface of the inner bushing 2, so that the first sealing lip 5 and the second sealing lip 6 can be conveniently arranged.

First seal lip 5 include that first annular is protruding 10 and second annular is protruding 11, first annular protruding 10 establish in first passageway 7, second annular protruding 11 be located second passageway 8, the shape of the protruding 10 cross sections of first annular be isosceles trapezoid, the shape of the protruding 10 cross sections of second annular be the rectangle, the length of rectangle equal to isosceles trapezoid's last end, sealed effectual, utilize the protruding 11 cards of second annular in second passageway 8, the protruding 10 cards of first annular is in first passageway 7.

The second sealing lip 6 comprises a third annular bulge 12, a fourth annular bulge 13, a fifth annular bulge 14 and a sixth annular bulge 15, the third annular bulge 12, the fourth annular bulge 13, the fifth annular bulge 14 and the sixth annular bulge 15 are sequentially arranged from left to right, the third annular bulge 12 is positioned in the second channel 8, the fourth annular bulge 13, the fifth annular bulge 14 and the sixth annular bulge 15 are positioned in the third channel 9, the cross sections of the third annular bulge 12, the fourth annular bulge 13 and the sixth annular bulge 15 are all rectangular, the cross section of the fifth annular bulge 14 is isosceles trapezoid, the upper bottom of the fifth annular bulge 14 is equal to the rectangular length of the sixth annular bulge 15, the fifth annular bulge 14 is equal to the rectangular length of the fourth annular bulge 13, the rectangular length of the third annular bulge 12 is greater than the rectangular length of the fourth annular bulge 13, the sealing effect is good, the third annular bulge 12 is clamped in the second channel 8, and the fourth annular bulge 13, the fifth annular bulge 14 and the sixth annular bulge 15 are clamped in the third channel 9.

Particularly, the utility model discloses a principle is that establish recess 3 at 1 inside wall of bushing, establishes the through-hole 4 that corresponds with recess 3 on bushing 2 simultaneously, and recess 3 is used for gathering the grease and deposits the durability in order to prolong lubrication, gathers the grease through-hole 4 and exists in recess 3, and is lubricated effectual, long service life.

On the basis of the above solution, if various changes or modifications of the present invention do not depart from the spirit and scope of the present invention, if they fall within the scope of the claims and the equivalent technology of the present invention, then the present invention is also intended to include these changes and modifications.

Claims

1. The utility model provides a polyurethane bushing, includes outer liner (1) and interior bush (2), interior bush (2) establish on outer liner (1) inside wall, its characterized in that: the inner side wall of the outer bushing (1) is provided with a plurality of grooves (3) for storing grease, and the inner bushing (2) is provided with through holes (4) corresponding to the grooves (3).

2. The polyurethane bushing of claim 1, wherein: the groove (3) is hemispherical.

3. The polyurethane bushing of claim 2, wherein: the depth of the groove (3) is 0.7 mm-1.2 mm.

4. The polyurethane bushing of claim 2, wherein: the radius of the corresponding sphere of the groove (3) is 2.5 mm-3.3 mm.

5. The polyurethane bushing of claim 1, wherein: the inner bushing (2) is provided with a first sealing lip (5) and a second sealing lip (6) at the left end and the right end respectively, and the first sealing lip (5) and the second sealing lip (6) are both located on the inner wall of the outer bushing (1).

6. The polyurethane bushing of claim 5, wherein: the outer bushing (1) in from left to right be equipped with first passageway (7), second passageway (8) and third passageway (9) in proper order, first passageway (7), second passageway (8) and third passageway (9) communicate in proper order, interior bush (2) establish in second passageway (8), first seal lip (5) left end be located first passageway (7), first seal lip (5) right-hand member support and lean on interior bush (2) left end face, second seal lip (6) right-hand member be located third passageway (9), second seal lip (6) left end support and lean on interior bush (2) right end face.

7. The polyurethane bushing of claim 6, wherein: first seal lip (5) including first annular arch (10) and second annular arch (11), first annular arch (10) establish in first passageway (7), second annular arch (11) be located second passageway (8), the shape of first annular arch (10) cross section be isosceles trapezoid, the shape of second annular arch (11) cross section be the rectangle, the length of rectangle equal to isosceles trapezoid's last base.

8. The polyurethane bushing of claim 6, wherein: the second sealing lip (6) comprises a third annular bulge (12), a fourth annular bulge (13), a fifth annular bulge (14) and a sixth annular bulge (15), the third annular bulge (12), the fourth annular bulge (13), the fifth annular bulge (14) and the sixth annular bulge (15) are sequentially arranged from left to right, the third annular bulge (12) is positioned in the second channel (8), the fourth annular bulge (13), the fifth annular bulge (14) and the sixth annular bulge (15) are all positioned in the third channel (9), the cross sections of the third annular bulge (12), the fourth annular bulge (13) and the sixth annular bulge (15) are all rectangular, the cross section of the fifth annular bulge (14) is isosceles trapezoid, the upper bottom of the fifth annular bulge (14) is equal to the length of the sixth annular bulge (15), the lower bottom of the fifth annular bulge (14) is equal to the length of the rectangle of the fourth annular bulge (13), and the length of the rectangle of the third annular bulge (12) is greater than that of the rectangle of the fourth annular bulge (13).