CN212079941U

CN212079941U - Automobile steering device bushing structure

Info

Publication number: CN212079941U
Application number: CN202020007261.7U
Authority: CN
Inventors: 刘栗均
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2020-12-04
Anticipated expiration: 2030-01-03

Abstract

The utility model relates to a car steering gear bush structure, including two become to the bush of pressure equipment in the steering gear casing, the bush is vulcanized by rubber sleeve and metal sleeve and forms, and metal sleeve is located inside and both ends of rubber sleeve and stretches out the rubber sleeve, its characterized in that, two the metal sleeve tip of the one end of bush mutual contact is provided with a plurality of bosss, and the boss on two metal sleeve can imbed each other and make its two metal sleeve connections. The utility model provides a current steering gear bush relative rotation easily appear and lead to the problem that construction bolt was broken.

Description

Automobile steering device bushing structure

Technical Field

The utility model relates to a steering gear assembly structure, concretely relates to steering gear bush structure.

Background

The automobile steering device is provided with a large number of bushings to realize vibration isolation and noise reduction of the automobile. In the assembly of current steering gear, adopt as shown in figure 1 two bushes advance to press the assembly, the bush is vulcanized by former rubber sleeve A and inside former metal pipe box D and forms, because cooperation adopts interference tolerance between former rubber sleeve A and former steering gear casing B, consequently, need scribble emollient in order to satisfy the pressure equipment needs on former rubber sleeve A surface, and combine actual loading production conditions, this structure is scribbled when excessive at emollient, former construction bolt C can make two bushes produce too big relative rotation at the tightening in-process, lead to former construction bolt C to appear being pulled the phenomenon apart at the tightening in-process.

The technical problem to be solved by the technical personnel in the field is to design a tool which can effectively avoid the phenomenon that the bushing rotates excessively and relatively in the tightening process of the mounting bolt, thereby ensuring that the bolt is not broken in the tightening torque range.

CN207631325U discloses a rubber bush for auto steering ware belongs to the auto steering ware field, and this application adopts horizontal groove and vertical sand grip to cooperate, not only can play the chucking effect when its cover is on the steering ware, turns to the in-process moreover, can fix a position the steering ware, prevents to appear skidding the problem. The stainless steel frame is hollow cylindrical, a horizontal groove parallel to the end face of the stainless steel frame is formed in the surface of the rubber bushing, and a longitudinal protruding strip parallel to the axis of the stainless steel frame is arranged in the horizontal groove. This is, of course, a beneficial attempt in the art.

Disclosure of Invention

The utility model aims at providing an auto steering ware bush structure solves current steering ware bush and easily appears relative rotation and lead to the problem that construction bolt was broken.

The utility model provides a car steering gear bush structure, including two become to the bush of pressure equipment in the steering gear casing, the bush is vulcanized by rubber sleeve and metal sleeve and forms, metal sleeve is located inside and both ends of rubber sleeve and stretches out the rubber sleeve, its characterized in that, two the metal sleeve tip of the one end of bush mutual contact is provided with a plurality of bosss, and the boss on two metal sleeve can imbed each other and make its two metal sleeve connections.

Further, the boss has a spiral surface spirally rising counterclockwise and a vertical surface spreading in a radial direction, and the sum of the rotation angles of the spiral surfaces of the plurality of bosses on each metal sleeve is 360 °.

Further, the number of the bosses on each metal sleeve is four, and the helix angle of the helical surface is 90 degrees.

Has the advantages that: the utility model discloses two set up the boss that can imbed each other on the metal sleeve of bush, make its two the mutual spacing unable relative rotation of bush, and adopt the boss that has helicoid and vertical face, the helicoid of two metal sleeve's boss is laminated mutually, plays the effect of pressure-bearing and direction, and the vertical face of boss contradicts mutually on two metal sleeve and plays limiting displacement, and the phenomenon of snapping appears when screwing up in the effectual steering gear mounting bolt of having avoided of combination of helicoid and vertical face. The utility model discloses simple structure, the dependable performance, the effectual current steering gear bush of having solved easily appears rotating relatively and results in the problem that construction bolt was broken.

Drawings

Fig. 1 is a schematic structural diagram of the prior art.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic view of the structure of a single bushing.

Fig. 4 is a schematic structural diagram of the present invention when the bolt is not installed.

Fig. 5 is a structural schematic diagram of a boss.

In the figure: a-original rubber sleeve, B-original steering gear shell, C-original mounting bolt and D-original metal sleeve;

1-steering gear shell, 2-bush, 21-rubber sleeve, 22-metal sleeve, 3-mounting bolt, 4-boss, 41-helical surface, 42-vertical surface and 5-gap.

Detailed Description

The invention will be further described with reference to the accompanying drawings:

as shown in fig. 2-5, the lining structure of the steering gear of the automobile comprises two lining 2 which are oppositely pressed and installed in a steering gear shell 1, wherein the lining 2 is formed by vulcanizing a rubber sleeve 21 and a metal sleeve 22, the metal sleeve 22 is positioned in the rubber sleeve 21, two ends of the metal sleeve 22 extend out of the rubber sleeve 21, a plurality of bosses 4 are arranged at the end part of the metal sleeve 22 at one end of the two lining 2 which is contacted with each other, and the bosses 4 on the two metal sleeves 22 can be embedded into each other to connect the two metal sleeves 22, so that the two metal sleeves 22 are connected into a pipe without relative rotation. The bosses 4 can be arranged at intervals, the length and width of the intervals are consistent with the length and width of the bosses 4, and the bosses 4 on one metal sleeve 22 are embedded into the intervals on the other metal sleeve 22 and are nested with each other.

Further, the boss 4 includes a spiral face 41 spirally rising counterclockwise and a vertical face 42 spreading in a radial direction, and the sum of the rotation angles of the spiral faces 41 of the plurality of bosses 4 on each metal sleeve 22 is 360 ° (i.e., one circumference). When the mounting bolt 3 is not mounted on the bush 2, as shown in fig. 4, a small gap 5 is formed between the bush 2, and the axial pressing force applied to the bush 2 during the tightening of the mounting bolt 3 eliminates the gap 5 between the bush 2, so that the screw surfaces 41 of the bosses 4 of the metal shell 22 are brought into contact with each other. In the process of screwing the mounting bolt 3 rightwards, the bolt head and the surface of the bush 2 rub to apply a rightwards-rotating moment to the bush 2, and when the rightwards-rotating moment enables the vertical surfaces 42 of the bosses 4 of the two bushes 2 to mutually abut against each other, the two bushes 2 can not rotate relatively. The height of the vertical surface 42 of the boss 4 needs to be larger than the thread pitch of the mounting bolt 3 for smooth installation.

Further, four bosses 4 are provided on each metal sleeve 22, and the rotation angle of the spiral surface 41 is 90 °. This allows the helicoid 41 of each boss 4 to be rotated at a moderate angle, making the connection more reliable.

Claims

1. The utility model provides an auto steering ware bush structure, includes two become bushing (2) of pressure equipment in steering gear casing (1), bushing (2) are vulcanized by rubber sleeve (21) and metal sleeve (22) and are formed, metal sleeve (22) are located inside and both ends of rubber sleeve (21) and stretch out rubber sleeve (21), its characterized in that, two metal sleeve (22) tip of bushing (2) the one end of mutual contact is provided with a plurality of bosss (4), and boss (4) on two metal sleeve (22) can imbed each other and make its two metal sleeve (22) connect.

2. The automobile steering gear bushing structure according to claim 1, wherein the boss (4) has a spiral surface (41) spirally rising counterclockwise and a vertical surface (42) spreading in a radial direction, and the sum of the rotation angles of the spiral surfaces (41) of the plurality of bosses (4) on each metal sleeve (22) is 360 °.

3. The automobile steering gear bushing structure according to claim 2, wherein the number of bosses (4) on each metal sleeve (22) is four, and the helix angle of the helical surface (41) is 90 °.