Eccentric bolt of suspension support arm

Abstract

The utility model belongs to the technical field of fasteners, and particularly relates to a suspension support arm eccentric bolt which comprises a bolt head, an eccentric gasket is fixedly connected below the bolt head, a screw rod is fixedly connected below the eccentric gasket, and the bolt head, the eccentric gasket and the screw rod are integrally formed. According to the eccentric bolt of the suspension support arm, one-time forming of an eccentric structure is achieved through a die and a process during cold heading, the production efficiency is improved to a great extent, the two working procedures of tooth rolling and assembling are reduced, meanwhile, the risk that a gasket falls off does not exist in the integrated structure, and the technical problem that an existing eccentric bolt is inconvenient to assemble, produce and use is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to an eccentric bolt of a suspension arm. Background Art

[0002] The suspension arm eccentric bolt uses the physics and mathematical principles of inclined circular rotation and friction to gradually tighten objects and components. It can be used for wheel alignment adjustment, measuring and correcting the relative alignment angles of all four wheels using the average propulsion direction of the rear wheels as a reference. This ensures that the chassis components and tires maintain the proper geometric relationship while the vehicle is driving. Due to their unique structure, eccentric bolts are currently manufactured and used in an assembled manner, which is relatively costly and inconvenient. Utility Model Content

[0003] Based on the technical problem that the existing eccentric bolts are inconvenient to assemble, produce and use, the utility model proposes an eccentric bolt for a suspension arm.

[0004] The utility model provides an eccentric bolt for a suspension arm, comprising a bolt head, an eccentric gasket fixedly connected below the bolt head, a screw fixedly connected below the eccentric gasket, and the bolt head, the eccentric gasket and the screw integrally formed.

[0005] Preferably, the bolt head is a hexagonal bolt, and the upper end of the bolt head is provided with a chamfer.

[0006] Preferably, the eccentric gasket is not concentric with the bolt head, and an angle groove is provided on the upper surface of the eccentric gasket.

[0007] Preferably, the screw and the eccentric washer are not concentric, the center of the screw is located below the center of the eccentric washer, and the bolt head is concentric with the screw.

[0008] Preferably, the lower end of the screw is provided with a thread, and a positioning groove is provided on the side of the screw close to the center of the eccentric gasket. The positioning groove is a U-shaped groove, and the U-shaped groove extends from the middle of the screw to the lower end. The lower end of the screw is provided with a chamfer.

[0009] The beneficial effects of the present invention are:

[0010] 1. By using molds and processes to achieve one-time forming of the eccentric structure during cold forging, production efficiency is greatly improved, and the two processes of tooth rolling and assembly are reduced. At the same time, the integrated structure will not have the risk of gasket falling off, solving the technical problem of inconvenient assembly, production and use of existing eccentric bolts.

[0011] 2. By adjusting the large eccentric structure of the support surface under the bolt head, the kingpin caster angle and wheelbase can be changed to meet the four-wheel alignment adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of an eccentric bolt of a suspension arm proposed by the present invention;

[0013] Figure 2 This is a three-dimensional diagram of the eccentric gasket structure of the eccentric bolt of the suspension arm proposed by the utility model;

[0014] Figure 3 This is a bottom view of the screw structure of an eccentric bolt of a suspension arm proposed by the utility model.

[0015] In the figure: 1. Bolt head; 2. Eccentric washer; 3. Screw; 4. Angle groove; 5. Thread; 6. Positioning groove. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] Reference Figure 1-Figure 3 A suspension arm eccentric bolt includes a bolt head 1, an eccentric washer 2 is fixedly connected below the bolt head 1, a screw rod 3 is fixedly connected below the eccentric washer 2, and the bolt head 1, eccentric washer 2 and screw rod 3 are integrally formed.

[0018] By using molds and processes to achieve one-time forming of the eccentric structure during cold forging, production efficiency is greatly improved, the two processes of tooth rolling and assembly are reduced, and at the same time, the one-piece structure will not have the risk of gasket falling off.

[0019] The bolt head 1 is a hexagonal bolt, and the upper end of the bolt head 1 is provided with a chamfer.

[0020] Furthermore, the chamfer of the upper end of the bolt head 1 is 15-30°.

[0021] The eccentric washer 2 is not concentric with the bolt head 1 , and an angle groove 4 is formed on the upper surface of the eccentric washer 2 .

[0022] Furthermore, the angle grooves 4 are evenly distributed at intervals of 10° on the side away from the bolt head 1 .

[0023] The screw rod 3 and the eccentric washer 2 are not concentric, the center of the screw rod 3 is located below the center of the eccentric washer 2, and the bolt head 1 is concentric with the screw rod 3.

[0024] Furthermore, the diameter of the eccentric gasket is 35.0-35.5 mm, and the eccentric distance is 5.95-6.05 mm.

[0025] By adjusting the large eccentric structure of the support surface under the bolt head 1, the castor angle and wheelbase can be changed to meet the four-wheel alignment adjustment.

[0026] A thread 5 is provided at the lower end of the screw 3, and a positioning groove 6 is provided on the screw 3 near the center of the eccentric gasket 2. The positioning groove 6 is a U-shaped groove that extends from the middle of the screw 3 to the lower end. The lower end of the screw 3 is chamfered.

[0027] Furthermore, the length of the thread 5 is smaller than the length of the positioning groove 6 , and the chamfer at the bottom of the screw rod 3 is a C angle.

[0028] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An eccentric bolt for a suspension arm, comprising a bolt head (1), characterized in that: An eccentric gasket (2) is fixedly connected below the bolt head (1), and a screw rod (3) is fixedly connected below the eccentric gasket (2); the bolt head (1), the eccentric gasket (2) and the screw rod (3) are integrally formed.

2. The eccentric bolt of a suspension arm according to claim 1, characterized in that: The bolt head (1) is a hexagonal bolt, and the upper end of the bolt head (1) is provided with a chamfer.

3. The eccentric bolt of a suspension arm according to claim 1, characterized in that: The eccentric gasket (2) is not concentric with the bolt head (1), and an angle groove (4) is provided on the upper surface of the eccentric gasket (2).

4. The eccentric bolt of a suspension arm according to claim 1, characterized in that: The screw rod (3) and the eccentric washer (2) are not concentric, the center of the screw rod (3) is located below the center of the eccentric washer (2), and the bolt head (1) is concentric with the screw rod (3).

5. The eccentric bolt of a suspension arm according to claim 1, characterized in that: The lower end of the screw rod (3) is provided with a thread (5), and a positioning groove (6) is provided on the screw rod (3) near the center of the eccentric gasket (2). The positioning groove (6) is a U-shaped groove, and the U-shaped groove extends from the middle of the screw rod (3) to the lower end. The lower end of the screw rod (3) is provided with a chamfer.

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