Anti-following-rotation structure of steering engine shell and rubber bushing

Abstract

The utility model relates to the technical field of steering systems, in particular to an anti-following-rotation structure of a steering engine shell and a rubber bushing. An anti-following-rotation structure of a steering machine shell and rubber bushings is characterized in that an upper rubber bushing, a lower rubber bushing and a chassis support are connected through bolts, and the steering machine shell is arranged on the outer side of the upper rubber bushing and the outer side of the lower rubber bushing in a sleeved mode. Threaded holes connected with bolts are formed in the centers of the upper rubber bushing and the lower rubber bushing; a plurality of bushing wedge-shaped structures are evenly distributed on the upper rubber bushing and the lower rubber bushing, a plurality of steering machine shell wedge-shaped structures are evenly distributed on the upper end face of the steering machine shell, and the bushing wedge-shaped structures are matched with the steering machine shell wedge-shaped structures. Compared with the prior art, the problem that the rubber bushing rotates along with the bolt when the steering engine is assembled and disassembled is solved, and the assembling feasibility of the steering engine of a client is met.

Description

Technical Field

[0001] The utility model relates to the technical field of steering systems, in particular to an anti-rotation structure of a steering machine housing and a rubber bushing. Background Art

[0002] In order to improve the NVH performance of the automobile steering gear, the automobile chassis and the steering gear housing are usually flexibly connected using rubber bushings, and the rubber bushings are locked and fixed by long bolts.

[0003] The way the steering gear is fixed to the chassis is usually defined by the customer. Some customers require that the rubber bushing hole on one side be changed to a threaded bushing to replace the nut for fixing the steering gear due to assembly space and other reasons. For this type of structure, the customer only needs to tighten the bolts when assembling the steering gear. However, during the assembly of the bolts, as the tightening torque increases, the interference between the threaded rubber mounting bushing and the housing mounting bracket hole is not enough to overcome the tightening torque of the bolts, and the mounting bushing slips. In order to meet the needs of such customers, it is necessary to design a rubber bushing that prevents heel rotation. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the utility model provides an anti-rotation structure for a steering gear housing and a rubber bushing, which optimizes the rotation problem of the rubber bushing following the bolt during installation and disassembly of the steering gear, thereby meeting the assembly feasibility of the customer's steering gear.

[0005] To achieve the above purpose, a steering gear housing and rubber bushing anti-rotation structure is designed, comprising an upper rubber bushing, a steering gear housing, a lower rubber bushing, and a chassis bracket. A lower rubber bushing is provided below the upper rubber bushing, and a chassis bracket is provided below the lower rubber bushing. The upper rubber bushing, the lower rubber bushing and the chassis bracket are connected by bolts, and a steering gear housing is sleeved on the outer sides of the upper rubber bushing and the lower rubber bushing. It is characterized in that: the steering gear housing and the upper rubber bushing and the lower rubber bushing are interference fit, and a threaded hole connected to the bolt is provided in the center of the upper rubber bushing and the lower rubber bushing; a plurality of bushing wedge structures are evenly distributed on the upper rubber bushing and the lower rubber bushing, a plurality of steering gear housing wedge structures are evenly distributed on the upper end surface of the steering gear housing, and the bushing wedge structure cooperates with the steering gear housing wedge structure.

[0006] There are at least 12 bushing wedge structures, and the 12 bushing wedge structures are evenly distributed on the end surface where the upper rubber bushing contacts the upper end surface of the steering gear housing. Adjacent bushing wedge structures are transitioned by chamfered corners, and the wedge angle of the bushing wedge structure is -α°.

[0007] The lower rubber bushing has the same structure as the upper rubber bushing.

[0008] There are at least 12 steering gear housing wedge-shaped structures, and the 12 steering gear housing wedge-shaped structures are evenly distributed on the upper end surface of the steering gear housing. Two adjacent steering gear housing wedge-shaped structures are transitioned by chamfered corners, and the wedge angle of the steering gear housing wedge-shaped structure is α°.

[0009] The angle range of α° is 6°~10°.

[0010] The angle α° is greater than the lead angle of the bolt.

[0011] The bolt is an M10*1.5 bolt, and the lead angle of the bolt is 3°.

[0012] The side surfaces of the wedge-shaped structure of the upper rubber bushing and the wedge-shaped structure of the steering gear housing are triangular structures.

[0013] The cross sections of the upper rubber bushing and the lower rubber bushing are T-shaped.

[0014] The steering gear housing is a cylindrical structure.

[0015] Compared with the prior art, the utility model provides a steering gear housing and a rubber bushing anti-rotation structure, which optimizes the problem of the rubber bushing rotating with the bolt during the installation and disassembly of the steering gear, and meets the assembly feasibility of the customer's steering gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the installation structure of the steering gear housing bushing of the utility model.

[0017] Figure 2 for Figure 1 Cross-sectional view of the structure.

[0018] Figure 3 It is a structural schematic diagram of the upper rubber bushing in the utility model.

[0019] Figure 4 Schematic diagram of the wedge-shaped structure of the upper rubber bushing.

[0020] Figure 5 It is a structural schematic diagram of the steering gear housing in the utility model.

[0021] Figure 6 It is a schematic diagram of the steering gear housing wedge-shaped structure on the steering gear housing. DETAILED DESCRIPTION

[0022] The utility model is further described below with reference to the accompanying drawings.

[0023] like Figures 1 to 6As shown, a lower rubber bushing 2 is provided below the upper rubber bushing 1, and a chassis bracket 3 is provided below the lower rubber bushing 2. The upper rubber bushing 1, the lower rubber bushing 2 and the chassis bracket 3 are connected by bolts 4, and a steering gear housing 5 is sleeved on the outer sides of the upper rubber bushing 1 and the lower rubber bushing 2. It is characterized in that: the steering gear housing 5 is interference fit with the upper rubber bushing 1 and the lower rubber bushing 2, and a threaded hole connected with the bolt 4 is provided in the center of the upper rubber bushing 1 and the lower rubber bushing 2; a plurality of bushing wedge structures 6 are evenly distributed on the upper rubber bushing 1 and the lower rubber bushing 2, and a plurality of steering gear housing wedge structures 7 are evenly distributed on the upper end surface of the steering gear housing 5, and the bushing wedge structures 6 are matched with the steering gear housing wedge structures 7.

[0024] There are at least 12 bushing wedge structures 6, and the 12 bushing wedge structures 6 are evenly distributed on the end surface where the upper rubber bushing 1 contacts the upper end surface of the steering gear housing 5. The adjacent bushing wedge structures 6 are transitioned by chamfered corners, and the wedge angle of the bushing wedge structure 6 is -α°.

[0025] The lower rubber bushing 2 has the same structure as the upper rubber bushing 1 .

[0026] There are at least 12 steering gear housing wedge structures 7, and the 12 steering gear housing wedge structures 7 are evenly distributed on the upper end surface of the steering gear housing 5. The adjacent steering gear housing wedge structures 7 are transitioned by chamfered corners, and the wedge angle of the steering gear housing wedge structure 7 is α°.

[0027] The angle range of α° is 6°~10°.

[0028] The angle α° is greater than the lead angle of the bolt 4 .

[0029] The bolt 4 is a bolt of M10*1.5, and the lead angle of the bolt 4 is 3°.

[0030] The side surfaces of the upper rubber bushing wedge-shaped structure 6 and the steering gear housing wedge-shaped structure 7 are triangular structures.

[0031] The cross sections of the upper rubber bushing 1 and the lower rubber bushing 2 are T-shaped.

[0032] The steering gear housing 5 is a cylindrical structure.

[0033] The utility model structure is composed of an upper rubber bushing 1, a lower rubber bushing 2, a chassis bracket 3, a steering gear housing 5 and a bolt 4. The upper rubber bushing 1, the lower rubber bushing 2 and the steering gear housing 5 are interference fit, the inner holes of the upper rubber bushing 1 and the lower rubber bushing 2 are threaded holes, the contact surfaces of the upper rubber bushing 1, the lower rubber bushing 2 and the steering gear housing 5 are respectively designed as 12 equally divided bushing wedge structures 6, the wedge angle of the bushing wedge structure 6 is -α°, and a chamfered transition is performed between two adjacent bushing wedge structures 6; the contact surface between the steering gear housing 5 and the upper rubber bushing 1 is designed as 12 equally divided steering gear housing wedge structures 7, the wedge angle of the steering gear housing wedge structure 7 is α°, and a chamfered transition is performed between two adjacent steering gear housing wedge structures 7, and the wedge angles of the long housing and the servo housing are complementary shapes. During the clockwise tightening of the bolt 4, the wedge-shaped steps of the bushing wedge structure 6 and the steering gear housing wedge structure 7 and the interference fit between the upper rubber bushing 1, the lower rubber bushing 2 and the steering gear housing 5 prevent the upper rubber bushing 1 and the bolt 4 from rotating. During the loosening of the bolt 4, since the wedge angle is α°>the lead angle of the bolt 4, the upper rubber bushing 1 and the bolt 4 can be prevented from rotating during the loosening process.

Claims

1. A steering gear housing and rubber bushing anti-rotation structure, comprising an upper rubber bushing, a steering gear housing, a lower rubber bushing, and a chassis bracket, wherein a lower rubber bushing (2) is provided below the upper rubber bushing (1), and a chassis bracket (3) is provided below the lower rubber bushing (2), the upper rubber bushing (1), the lower rubber bushing (2) and the chassis bracket (3) are connected by bolts (4), and a steering gear housing (5) is sleeved on the outer sides of the upper rubber bushing (1) and the lower rubber bushing (2), characterized in that: The steering gear housing (5) is interference-fitted with the upper rubber bushing (1) and the lower rubber bushing (2), and threaded holes connected to the bolts (4) are provided at the center of the upper rubber bushing (1) and the lower rubber bushing (2); a plurality of bushing wedge structures (6) are evenly distributed on the upper rubber bushing (1) and the lower rubber bushing (2); a plurality of steering gear housing wedge structures (7) are evenly distributed on the upper end surface of the steering gear housing (5), and the bushing wedge structures (6) are matched with the steering gear housing wedge structures (7).

2. The anti-rotation structure of the steering gear housing and the rubber bushing according to claim 1, characterized in that: At least 12 bushing wedge structures (6) are provided, and the 12 bushing wedge structures (6) are evenly distributed on the end surface of the upper rubber bushing (1) in contact with the upper end surface of the steering gear housing (5), and adjacent bushing wedge structures (6) are transitioned by chamfered corners, and the wedge angle of the bushing wedge structures (6) is -α°.

3. The anti-rotation structure of the steering gear housing and the rubber bushing according to claim 1, characterized in that: The lower rubber bushing (2) has the same structure as the upper rubber bushing (1).

4. The anti-rotation structure of the steering gear housing and the rubber bushing according to claim 1, characterized in that: At least 12 steering gear housing wedge-shaped structures (7) are provided, and the 12 steering gear housing wedge-shaped structures (7) are evenly distributed on the upper end surface of the steering gear housing (5), and a rounded transition is provided between two adjacent steering gear housing wedge-shaped structures (7), and the wedge angle of the steering gear housing wedge-shaped structure (7) is α°.

5. The anti-rotation structure of the steering gear housing and the rubber bushing according to claim 2 or 4, characterized in that: The angle range of α° is 6°~10°.

6. The anti-rotation structure of the steering gear housing and the rubber bushing according to claim 2 or 4, characterized in that: The angle α° is greater than the lead angle of the bolt (4).

7. The anti-rotation structure of the steering gear housing and the rubber bushing according to claim 6, characterized in that: The bolt (4) is an M10*1.5 bolt, and the lead angle of the bolt (4) is 3°.

8. The anti-rotation structure of the steering gear housing and the rubber bushing according to claim 1, characterized in that: The side surfaces of the upper rubber bushing wedge-shaped structure (6) and the steering gear housing wedge-shaped structure (7) are triangular structures.

9. The anti-rotation structure of the steering gear housing and the rubber bushing according to claim 1, characterized in that: The cross-sections of the upper rubber bushing (1) and the lower rubber bushing (2) are T-shaped.

10. The anti-rotation structure of the steering gear housing and the rubber bushing according to claim 1, characterized in that: The steering gear housing (5) is a cylindrical structure.

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