CN219263054U

CN219263054U - Pin bushing

Info

Publication number: CN219263054U
Application number: CN202223419010.8U
Authority: CN
Inventors: 胡超; 邵晓峰; 张亚军; 刘健东
Original assignee: Ningguo Ruipu Seals Co ltd
Current assignee: Ningguo Ruipu Seals Co ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-06-27
Anticipated expiration: 2032-12-20

Abstract

The utility model discloses a ball pin bushing, which belongs to the technical field of automobile spare and accessory parts and comprises an insert rod inner core, a middle inserting piece, an outer inserting piece and rubber, wherein a concave arc part is arranged on the periphery of the center of the insert rod inner core, so that the weight of a part of ball pin bushing assembly can be reduced, the middle inserting piece and the outer inserting piece are sequentially arranged on the outer side of the concave arc part, the middle inserting piece comprises a first arc piece and a second arc piece, a convex arc part is arranged on one side, close to the insert rod inner core, of the first arc piece and the second arc piece, and the convex arc part is matched with the concave arc part of the insert rod inner core, so that the rigidity loss of the concave arc shape of the insert rod inner core is compensated, the radial rigidity of the bushing is ensured, and the deflection rigidity is reduced; the edges of the two opposite sides of the first arc-shaped piece and the second arc-shaped piece are respectively provided with an opening structure, the opening structure is provided with a notch, the notch is of a stepped structure from inside to outside, abrasion of rubber in the durable process is prevented, and wrinkles generated by corner extrusion cannot be generated, so that the service life of a product is prolonged.

Description

Pin bushing

Technical Field

The utility model belongs to the technical field of vehicle spare and accessory parts, and relates to a vehicle pin bushing.

Background

The bushing is used outside mechanical parts to achieve the effects of sealing, abrasion protection and the like, the ball pin bushing is arranged in a lifting lug of a thrust rod, the thrust rod is mainly applied to a single-axle or double-rear-axle heavy-duty car of a truck or passenger car suspension, and is connected with a frame and an axle, and the purpose of the bushing is mainly to overcome the defect that a leaf spring can only transmit vertical force and lateral force and cannot transmit traction force, braking force and corresponding reaction moment.

The traditional ball pin bushing is divided into two structures, wherein the first structure is that an insert rod inner core, two metal end covers and rubber are vulcanized into a whole, for example, a shock absorption bushing for a motor car suspension is disclosed in publication No. CN204004120U, the bushing in the application consists of an outer sleeve, an insert rod and a rubber body, the insert rod is positioned in the middle of the outer sleeve, the rubber body is positioned between the outer sleeve and the insert rod and is a vulcanized integrally formed rubber body, but the inner core and the end covers are made of metal such as iron, so that the assembly weight of the bushing is large, and the manufacturing cost is high; the second is that an insert rod inner core, two middle inserting pieces, two outer inserting pieces and rubber become an organic whole through vulcanization, the bush of this structure utilizes middle inserting pieces and outer inserting pieces to replace the end cover part of the first structure bush, though the assembly weight of bush has been reduced to a certain extent, rubber between middle inserting pieces and the outer inserting pieces and rubber between middle inserting pieces and the insert rod inner core can be when pushing into lug pressure equipment with the ball pin bush, both ends rubber can rise along with this toward open-ended direction, when rubber and outer inserting pieces and lug terminal surface parallel and level, durable in-process rubber is very easily sheared and worn seriously, lead to rubber failure, thereby reduced the life of bush.

Disclosure of Invention

The utility model aims to provide a ball pin bushing, which can reduce the weight of a thrust rod assembly on a vehicle body, so that the cost is reduced, and meanwhile, the self performance of the ball pin bushing is improved and improved, and the service life of the ball pin bushing is effectively prolonged, so that the problems that the service life of the bushing is shortened due to the fact that the conventional bushing assembly is heavy in weight and the service time is too long, and abrasion exists between rubber and metal are solved.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the ball pin bushing comprises an insert rod inner core, a middle inserting piece, an outer inserting piece and rubber, wherein a concave arc part is arranged on the periphery of the center of the insert rod inner core, the middle inserting piece and the outer inserting piece are sequentially arranged on the outer side of the concave arc part, the middle inserting piece comprises a first arc piece and a second arc piece, a convex arc part is arranged on one side, close to the insert rod inner core, of each of the first arc piece and the second arc piece, and the convex arc part is matched with the concave arc part of the insert rod inner core;

the first arc-shaped piece with the second arc-shaped piece sets up relatively, just first arc-shaped piece with the both sides edge that the second arc-shaped piece is relative all is formed with open structure, first arc-shaped piece the second arc-shaped piece with between the concave arc part of plunger inner core all through rubber vulcanization as an organic whole.

Further, the outer insert comprises a third arc-shaped piece and a fourth arc-shaped piece, the third arc-shaped piece is arranged on the outer side of the first arc-shaped piece, the fourth arc-shaped piece is arranged on the outer side of the second arc-shaped piece, and the third arc-shaped piece is integrated with the first arc-shaped piece and the fourth arc-shaped piece is integrated with the second arc-shaped piece through rubber vulcanization.

Further, the rubber is provided with a notch at the opening structure, and the notch is in a stepped structure from inside to outside.

Further, through holes are formed in the fixing portions at two ends of the plunger inner core.

Further, the plunger inner core, the middle inserting piece and the outer inserting piece are all made of plastic materials.

The utility model has at least one of the following beneficial effects:

(1) The middle of the plunger inner core is provided with the concave arc structure, so that the weight of a part of ball pin bushing assembly can be reduced, and the bushing material is changed from iron to plastic, so that the total weight of the ball pin bushing is further reduced, and the production cost is reduced;

(2) The first arc-shaped part and the second arc-shaped part of the middle inserting piece are designed into a convex arc shape, and the convex arc part of the first arc-shaped part and the concave arc part of the inner core of the inserting rod are matched, so that the rigidity loss of the concave arc shape of the inner core of the inserting rod is compensated, the radial rigidity of the bushing is ensured, and the deflection rigidity is reduced; and the rubber structure at the opening structure is in a stepped structure from inside to outside, the structure ensures that the rubber surface is lower than the plane of the lifting lug after the ball pin bush is pressed into the lifting lug, the rubber and metal are sheared and worn in the durable process, wrinkles generated by corner extrusion are not generated, and the phenomenon of rubber stress concentration can be eliminated under the condition of improving the appearance of the part, so that the service life of the product is prolonged.

Drawings

The utility model is further described below with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view of the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic perspective view of the present utility model;

FIG. 4 is a cross-sectional view of a prior art ball pin bushing;

fig. 5 is a cross-sectional view of another prior art ball and socket assembly.

In the figure: 1. an inner core of the plunger; 2. a middle insert piece; 3. an outer insert; 4. rubber; 5. a through hole; 6. an opening structure; 7. a concave arc portion; 8. a convex arc part; 9. a fixing part; 10. a first arcuate member; 11. a second arcuate member; 12. a third arcuate member; 13. and a fourth arc-shaped piece.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the utility model discloses a ball pin bushing, which comprises an insert rod inner core 1, a middle insert piece 2, an outer insert piece 3 and rubber 4, wherein a concave arc part 7 is arranged on the periphery of the center of the insert rod inner core 1, the middle insert piece 2 and the outer insert piece 3 are sequentially arranged on the outer side of the concave arc part 7, the middle insert piece 2 comprises a first arc-shaped piece 10 and a second arc-shaped piece 11, a convex arc part 8 is arranged on one side, close to the insert rod inner core 1, of each of the first arc-shaped piece 10 and the second arc-shaped piece 11, and the convex arc part 8 is matched with the concave arc part 7 of the insert rod inner core 1;

the first arc-shaped piece 10 and the second arc-shaped piece 11 are oppositely arranged, and the opening structures 6 are formed at the edges of the two opposite sides of the first arc-shaped piece 10 and the second arc-shaped piece 11, and the first arc-shaped piece 10, the second arc-shaped piece 11 and the concave arc part 7 of the plunger core 1 are vulcanized into a whole through rubber 4.

The outer inserting piece 3 comprises a third arc-shaped piece 12 and a fourth arc-shaped piece 13, wherein the third arc-shaped piece 12 is arranged on the outer side of the first arc-shaped piece 10, the fourth arc-shaped piece 13 is arranged on the outer side of the second arc-shaped piece 11, and rubber 4 is vulcanized into a whole between the third arc-shaped piece 12 and the first arc-shaped piece 10 and between the fourth arc-shaped piece 13 and the second arc-shaped piece 11.

The rubber 4 is provided with a notch at the opening structure 6, and the notch is in a stepped structure from inside to outside.

The fixing parts 9 at both ends of the plunger core 1 are provided with through holes 5.

The plunger inner core 1, the middle inserting piece 2 and the outer inserting piece 3 are all made of plastic materials.

As shown in fig. 4 and 5, two existing pin bushings are shown in fig. 4, and an insert rod inner core, two metal end covers and rubber are vulcanized into a whole, wherein the inner core and the end covers are generally made of metals such as iron, so that the bushing has high assembly weight and high manufacturing cost; FIG. 5 shows an inner core of a plunger, two middle inserting pieces, two outer inserting pieces and rubber are integrated through vulcanization, but the rubber between the middle inserting pieces and the outer inserting pieces and the rubber between the middle inserting pieces and the inner core of the plunger can rise along with the rubber at two ends towards the opening direction when a ball pin bushing is pushed into a lifting lug for press fitting, and when the rubber is flush with the outer inserting pieces and the end faces of the lifting lug, the rubber is easy to be sheared and worn seriously in the durable process;

when this scheme is in implementation, when the installation, the interference value in the distance rod lug is impressed to the ball pin bush is about 3mm, because rubber 4 is equipped with the notch in opening structure 6 department, and the notch is the ladder structure from inside to outside, can effectively prevent that rubber 4 from being extruded and rising and leading to the condition emergence of rubber 4 and well inserted sheet 2 and outer inserted sheet 4 parallel and level, after ball pin bush pressure equipment is gone into the lug, the rubber face is less than the lug plane, and can not produce the fold that the corner extrusion produced, can also eliminate rubber 4 stress concentration phenomenon under the circumstances of improving the part outward appearance, thereby improve the life of product.

The foregoing describes one embodiment of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.

Claims

1. The utility model provides a car round pin bush, includes plunger inner core (1), well inserted sheet (2), outer inserted sheet (3) and rubber (4), its characterized in that, the periphery at plunger inner core (1) center is equipped with a concave arc portion (7), well inserted sheet (2) and outer inserted sheet (3) are equipped with in proper order in concave arc portion (7) outside, well inserted sheet (2) include first arc piece (10) and second arc piece (11), first arc piece (10) with second arc piece (11) are close to one side of plunger inner core (1) all is equipped with protruding arc portion (8), protruding arc portion (8) with concave arc portion 7 looks adaptation of plunger inner core (1);

the novel plunger comprises a plunger core (1), wherein a first arc-shaped piece (10) and a second arc-shaped piece (11) are oppositely arranged, an opening structure (6) is formed at two opposite side edges of the first arc-shaped piece (10) and the second arc-shaped piece (11), and the first arc-shaped piece (10), the second arc-shaped piece (11) and the concave arc part (7) of the plunger core (1) are vulcanized into a whole through rubber (4).

2. The vehicle pin bushing according to claim 1, characterized in that the outer insert (3) comprises a third arc-shaped part (12) and a fourth arc-shaped part (13), the third arc-shaped part (12) is arranged on the outer side of the first arc-shaped part (10), the fourth arc-shaped part (13) is arranged on the outer side of the second arc-shaped part (11), and the third arc-shaped part (12) and the first arc-shaped part (10) and the fourth arc-shaped part (13) and the second arc-shaped part (11) are vulcanized into a whole through the rubber (4).

3. A car pin bushing according to claim 1, characterized in that the rubber (4) is provided with a recess at the opening structure (6), which recess is of stepped structure from inside to outside.

4. A car pin bushing according to claim 1, characterized in that the fixing parts (9) at both ends of the plunger core (1) are provided with through holes (5).

5. A car pin bushing according to claim 1, characterized in that the plunger core (1), the middle insert piece (2) and the outer insert piece (3) are all of plastic material.