CN215474314U

CN215474314U - Rotatable stabilizer bar rear bushing

Info

Publication number: CN215474314U
Application number: CN202120755102.XU
Authority: CN
Inventors: 张海庆; 历娜; 吕志成; 刘业刚; 张崇森
Original assignee: Shandong Meichen Industrial Group Co ltd
Current assignee: Shandong Meichen Industrial Group Co ltd
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2022-01-11
Anticipated expiration: 2031-04-12

Abstract

The utility model discloses a rotatable stabilizer bar rear bushing which comprises a stabilizer bar swing arm and an upper support with two sides, wherein a bolt with a nut penetrates through the stabilizer bar swing arm, the stabilizer bar swing arm is supported on the bolt through a bushing inner framework and a bushing outer framework, two ends of the bolt respectively penetrate through two sides of the upper support and are supported in the upper support, a side gasket penetrated through by the bolt is fixed on the inner side surface of one side of the upper support, and the side gasket is in contact with one side of the stabilizer bar swing arm. The utility model has the advantages of good vibration damping performance, simple structure, small impact among parts, small arrangement space, light weight, low cost and long service life.

Description

Rotatable stabilizer bar rear bushing

Technical Field

The utility model relates to an automobile part, in particular to a rotatable stabilizer bar rear bushing.

Background

In recent years, the total mileage of roads in China reaches the world first, the development of road transportation drives the rapid development of the heavy truck industry in China, and with the increasing automobile requirements, people not only meet the requirements of safety, rapidity and economy of commercial vehicles, but also have higher and higher requirements on the riding comfort of automobiles. At present, most heavy trucks in China mostly adopt full-floating cab suspensions, and the full-floating cab suspensions are used for connecting a cab and a frame, and simultaneously allow relative motion between the cab and the frame to realize the functions of supporting the cab and attenuating vibration. It has the main functions as follows: the weight of the cab is loaded, and the vertical motion is guided; vibration is isolated and attenuated, noise is reduced, and driving comfort is ensured; controlling the height and leveling the cab; bear the maximum load, absorb the impact energy, improve the impact safety. The four-airbag full-floating cab suspension mainly comprises a vibration damping system, a height control system, a guide system, an anti-roll system, a locking mechanism, a turnover mechanism, a limiting mechanism and other connecting components. In the constituent systems, a vibration reduction system and a height control system realize the functions of bearing weight, isolating and damping vibration, leveling a cab and the like, and an anti-roll system belongs to a guide mechanism and realizes the functions of guiding vertical movement and improving the operation stability. For the stabilizer bar, which is a key component of the anti-roll system, it is contradictory to improve the anti-roll stiffness and the ride comfort, that is, improving the anti-roll stiffness of the stabilizer bar reduces the ride comfort. For this reason, the stabilizer bar is usually flexibly coupled to other components of the cab suspension via a rubber bushing, which provides sufficient roll stiffness and vibration isolation.

At present, the rear bushing of the stabilizer bar has two forms, namely a solid bushing and a bushing which is hollowed in the X direction (according to a whole vehicle coordinate system). During pitching, rolling and warping of the vehicle cab, the rear bushing of the stabilizer bar can generate X-direction displacement and simultaneously generate torsion around the axial direction of the bushing. The solid bush provides sufficient deflection and bearing capacity through increase rubber layer thickness, reduction bush radial rigidity, and X is to fretwork bush through fretwork buffering displacement and provide great rigidity in Z to satisfying the requirement of bearing weight. However, the bushings of both structures twist the rubber layer around the axis, and the bushing is easily damaged by fatigue under the combined action of twisting, stretching and compressing motions, thereby shortening the service life.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, an object of the present invention is to provide a rotatable stabilizer bar rear bushing.

In order to achieve the purpose, the technical scheme of the utility model is as follows: the utility model provides a rotatable bush behind stabilizer bar, includes the stabilizer bar swing arm and has the upper bracket on both sides, the stabilizer bar swing arm runs through the bolt of taking the nut, and the stabilizer bar swing arm passes through bush inner frame and the outer skeleton support of bush on the bolt, the both ends of bolt run through the both sides of upper bracket respectively to support in the upper bracket, the upper bracket wherein one side medial surface is fixed with the side gasket that is run through by the bolt, side gasket and stabilizer bar swing arm one side contact.

Furthermore, the periphery of the bolt is also sleeved with a metal shaft sleeve and a plastic shaft sleeve from inside to outside, and the periphery of the plastic shaft sleeve is fixedly connected with the inner framework of the bushing.

Furthermore, the inner framework of the bushing and the outer framework of the bushing are elastically and fixedly connected through an annular bushing rubber layer.

Further, one side of the lining rubber layer is provided with an arc-shaped groove which is sunken inwards.

Further, the rubber layer of the bushing on one side of the arc-shaped groove and the edge of the outer framework of the bushing extend outwards to form a blocking edge.

Furthermore, the blocking edge surface of the lining rubber layer is uniformly provided with bulges arranged at intervals.

According to the utility model, the structural design is carried out on the rear bushing of the stabilizer bar by converting the twisting motion into the rotating motion, and the metal shaft sleeve and the plastic shaft sleeve are matched to form the rotating pair, so that the rubber layer is prevented from being twisted in the processes of pitching, rolling and warping of the vehicle, and the rubber layer is prevented from generating early failure under the combined action of twisting, compression and stretching. The utility model has the advantages of good vibration damping performance, simple structure, small impact among parts, small arrangement space, light weight, low cost and long service life.

Drawings

The present invention will now be further described with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic side sectional structure of the present invention.

Detailed Description

As shown in fig. 1 and 2, a rotatable stabilizer bar rear bushing includes a stabilizer bar swing arm 7 and an upper bracket 8 having both sides, the stabilizer bar swing arm 7 penetrates a bolt 9 having a nut 10, and the swing arm 7 of the stabilizer bar is supported on a bolt 9 through the inner framework 3 and the outer framework 1 of the bushing, two ends of the bolt 9 respectively penetrate through two sides of the upper bracket 8, and is supported in an upper bracket 8, a side gasket 6 penetrated by a bolt 9 is fixed on the inner side surface of one side of the upper bracket 8, the thickness of the side gasket 6 is larger than the gap between the upper bracket 8 and a stabilizer bar swing arm 7, so that the side gasket 6 is contacted with one side of the stabilizer bar swing arm 7, the side gasket 6 is made of polyurethane materials and can be compressed to provide a certain supporting force, the side gasket 6 limits deflection of the stabilizer bar swing arm 7, the stabilizer bar swing arm 7 is mainly limited to axially extrude the bushing outer framework 1, and the rubber layer 2 is further protected when axial movement occurs;

the periphery of the bolt 9 is also sleeved with a metal shaft sleeve 5 and a plastic shaft sleeve 4 from inside to outside, a gap is reserved between the metal shaft sleeve 5 and the plastic shaft sleeve 4 in the axial direction and the radial direction, and relative displacement can occur, the two metal shaft sleeves 5 are respectively inserted at two ends of the plastic shaft sleeve 4, the two metal shaft sleeves 5 are in direct contact without the gap, the metal shaft sleeves 5 and the plastic shaft sleeve 4 rotate during pitching, tilting and warping movement of the vehicle, the rubber layer 2 is prevented from twisting, the outer end of each metal shaft sleeve 5 extends outwards respectively to form a step structure, the plastic shaft sleeves 4 are also two, the plastic shaft sleeves 4 are made of POM-H + PTFE and have excellent wear resistance, the plastic shaft sleeves 4 are also in the step structure at two ends, the end surfaces have larger contact area with the metal shaft sleeves 5, and abrasion is reduced, oil storage grooves are uniformly distributed on the circumferential surfaces and the end surfaces of the metal shaft sleeve 5 and the plastic shaft sleeve 4, the oil storage grooves are used for being filled with lithium-based lubricating grease for lubrication, the oil storage grooves on the end surfaces of the plastic shaft sleeve 4 are not communicated, and are closed after being matched with the end surface of the metal shaft sleeve 5, so that dust is prevented from entering a contact surface of a rotating pair, abrasion is reduced, and in addition, the plastic shaft sleeve 4 can be exchanged with an SF-1F composite oil-free flanging self-lubricating bearing;

the periphery of the plastic shaft sleeve 4 is fixedly connected with the bushing inner framework 3, the bushing inner framework 3 is fixedly connected with the bushing outer framework 1 through the annular bushing rubber layer 2 in an elastic mode, namely, the bushing inner framework is fixedly connected with the bushing outer framework 1 through the vulcanized rubber layer 2, one side of the bushing rubber layer 2 is provided with an inwards sunken arc-shaped groove 11, the edge of the bushing rubber layer 2 on one side of the arc-shaped groove and the edge of the bushing outer framework 1 extend outwards to form a retaining edge 12, and bulges 13 which are arranged at intervals are uniformly distributed on the surface of the retaining edge of the bushing rubber layer 2.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the utility model should fall within the protection scope of the utility model.

Claims

1. A rotatable stabilizer bar rear bushing, comprising: including stabilizer bar swing arm (7) and upper bracket (8) that have both sides, stabilizer bar swing arm (7) run through bolt (9) of taking nut (10), and stabilizer bar swing arm (7) support on bolt (9) through bush inner frame (3) and bush exoskeleton (1), the both ends of bolt (9) run through the both sides of upper bracket (8) respectively, and support in upper bracket (8), upper bracket (8) wherein one side medial surface is fixed with side gasket (6) that run through by bolt (9), side gasket (6) and stabilizer bar swing arm (7) one side contact.

2. A rotatable stabilizer bar rear bushing as set forth in claim 1, wherein: the periphery of the bolt (9) is further sleeved with a metal shaft sleeve (5) and a plastic shaft sleeve (4) from inside to outside, the periphery of the plastic shaft sleeve (4) is fixedly connected with the lining inner framework (3), the number of the metal shaft sleeves (5) and the number of the plastic shaft sleeves (4) are two, the two ends of each of the metal shaft sleeves and the two ends of each of the plastic shaft sleeves are provided with step structures extending outwards, oil storage grooves are uniformly distributed in the circumferential surfaces and the end surfaces of the metal shaft sleeves (5) and the plastic shaft sleeves (4), and the oil storage grooves are used for filling lithium-based lubricating grease for lubrication.

3. A rotatable stabilizer bar rear bushing as set forth in claim 1, wherein: the bushing inner framework (3) is elastically and fixedly connected with the bushing outer framework (1) through the annular bushing rubber layer (2).

4. A rotatable stabilizer bar rear bushing as set forth in claim 3, wherein: one side of the lining rubber layer (2) is provided with an arc-shaped groove (11) which is sunken inwards.

5. A rotatable stabilizer bar rear bushing as set forth in claim 4, wherein: the edge of the lining rubber layer (2) and the lining outer framework (1) on one side of the arc-shaped groove extend outwards to form a blocking edge (12).

6. A rotatable stabilizer bar rear bushing as set forth in claim 5, wherein: the blocking edge surface of the lining rubber layer (2) is uniformly provided with bulges (13) arranged at intervals.