Eccentric bolt and riveting device for producing eccentric bolt

Abstract

The utility model relates to the field of eccentric bolts, in particular to an eccentric bolt and a riveting device for producing the eccentric bolt, which comprise a bolt body and a gasket arranged on the bolt body. The bolt body comprises a screw and a nut arranged at the end of the screw. An anti-rotation boss is arranged at one end, close to the nut, of the screw rod; the gasket is connected to the anti-rotation boss in a sleeving manner; a positioning groove is formed in the end, away from the nut, of the screw. The horizontal projection of the anti-rotation boss is polygonal; according to the eccentric bolt disclosed by the utility model, the structure of a traditional eccentric bolt is changed, and the anti-rotation boss is arranged, so that the stability of placing and arranging the gasket on the screw body can be ensured, and the gasket is prevented from rotating on the bolt body.

Description

Technical Field

[0001] This utility model relates to the field of eccentric bolts, specifically an eccentric bolt and a riveting device for producing the eccentric bolt. Background Technology

[0002] Eccentric bolts for four-wheel alignment adjustment of passenger cars are part of the car's suspension system and are used for four-wheel alignment adjustment, which is crucial for maintaining the correct alignment of the wheels.

[0003] Eccentric bolts for four-wheel alignment of passenger vehicles are mainly used to adjust the toe-in and camber angles of the wheels to ensure optimal contact between the wheels and the ground.

[0004] Proper four-wheel alignment can improve vehicle handling and driving stability, reduce tire wear, and enhance driving safety.

[0005] Existing eccentric bolts mainly consist of a screw and a washer. The traditional connection between the washer and the screw is mostly made by using a straight thread for interference fit. The traditional connection method is relatively simple and not stable enough. In addition, the interference between the straight thread and the washer is small, and the washer is easy to wobble or move on the screw.

[0006] Existing patent 201820924549.3 - Eccentric bolt assembly and vehicle having the assembly does not explicitly disclose the technical problem of solving the above-mentioned problem.

[0007] Therefore, in order to improve or solve at least one of the above problems, it is necessary to improve the existing eccentric bolts. Utility Model Content

[0008] The purpose of this invention is to provide an eccentric bolt structure that can ensure the stable assembly of the gasket on the screw.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] An eccentric bolt includes a bolt body and a washer disposed on the bolt body;

[0011] The bolt body includes a threaded rod and a nut disposed at the end of the threaded rod; an anti-rotation boss is provided at the end of the threaded rod near the nut; the washer is sleeved on the anti-rotation boss;

[0012] The screw has a positioning groove at the end away from the nut.

[0013] The anti-rotation boss has a polygonal horizontal projection.

[0014] Both the nut and the anti-rotation boss have a horizontal projection that is a regular hexagon.

[0015] The edges of the anti-rotation boss are misaligned with the edges of the nut.

[0016] A riveting device for producing the eccentric bolt includes a riveting die; the riveting die includes a die body, the die body has an axial positioning hole, and the edge of the axial positioning hole has an annular flange.

[0017] The annular flange has a guide arc surface at the end away from the mold body.

[0018] The advantages of this utility model are:

[0019] This utility model discloses an eccentric bolt and a riveting device for producing the eccentric bolt.

[0020] The eccentric bolt disclosed in this utility model changes the traditional eccentric bolt structure. By setting an anti-rotation boss, this utility model can ensure the stability of the washer's placement on the bolt body and prevent the washer from rotating on the bolt body. Attached Figure Description

[0021] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the anti-rotation boss in this utility model.

[0024] Figure 3 This is a schematic diagram of the riveting mold in this utility model.

[0025] Figure 4 This is a schematic diagram of the riveting die used in this utility model.

[0026] Figure 5 This is a side view of the anti-rotation boss in this utility model.

[0027] The markings in the above figures are all:

[0028] 1. Bolt body, 11. Nut, 12. Screw, 13. Anti-rotation boss, 3. Positioning groove, 4. Riveting die, 41. Die body, 42. Axial positioning hole, 43. Annular flange, 44. Guide arc surface. Detailed Implementation

[0029] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and the description of the preferred embodiments.

[0030] An eccentric bolt includes a bolt body 1 and a washer 2 disposed on the bolt body 1; the bolt body 1 includes a screw 12 and a nut 11 disposed at the end of the screw 12; an anti-rotation boss 13 is provided at the end of the screw 12 near the nut 11; the washer 2 is sleeved on the anti-rotation boss 13; a positioning groove 3 is provided at the end of the screw 12 away from the nut 11; the eccentric bolt disclosed in this utility model changes the traditional eccentric bolt structure. By setting the anti-rotation boss 13, this utility model can ensure the stability of the washer 2 placed on the screw 12 body and prevent the washer 2 from rotating on the bolt body 1.

[0031] Meanwhile, in this utility model, the anti-rotation boss 13 is located at the connection between the nut 11 and the screw 12. This arrangement can effectively ensure the structural strength of the connection between the nut 11 and the screw 12.

[0032] In actual use, the anti-rotation boss 13 and the washer 2 are connected by an interference fit, which makes it extremely convenient to install and fix the washer 2 on the bolt body 1.

[0033] In this invention, the eccentric bolt is mainly an eccentric bolt used for four-wheel alignment and adjustment of passenger vehicles.

[0034] The washer and bolt body are used together.

[0035] In this invention, the nut is a hexagonal flange head; the screw has an anti-rotation boss near the root of the hexagonal flange head; the gasket is fitted onto the anti-rotation boss; and the screw thread end has a positioning groove.

[0036] Furthermore, in this utility model, the anti-rotation boss 13 has a polygonal horizontal projection; the nut 11 and the anti-rotation boss 13 both have regular hexagonal horizontal projections; generally, the anti-rotation boss 13 has a regular hexagonal prism structure; at the same time, in order to facilitate assembly and use, this utility model requires that the gasket 2 also have a hexagonal hole; thus changing the problem of the traditional straight thread connection being not firm.

[0037] Meanwhile, in this utility model, the edges on the anti-rotation boss 13 and the edges on the nut 11 are misaligned. Based on this design, this utility model avoids the anti-rotation boss 13 and the edges on the nut 11 from coinciding, thus avoiding stress concentration and breakage at the flange of the nut 11 during subsequent cold heading.

[0038] The edge here actually refers to the hexagonal part on the side of the hexagonal flange head or the corner part on the side of the anti-rotation boss.

[0039] The shim 2 is assembled onto the bolt body 1 by riveting; the use of the positioning shim 2 allows for precise and efficient four-wheel alignment adjustment by observing its positioning scale lines.

[0040] A riveting device for producing the eccentric bolt includes a riveting mold 4; the riveting mold 4 includes a mold body 41, the mold body 41 is provided with an axial positioning hole 42, and an annular flange 43 is provided at the edge of the axial positioning hole 42; the present invention facilitates the fixed installation of the washer 2 on the bolt body 1 by setting the riveting mold 4; at the same time, in actual use, it is required that the anti-rotation boss be squeezed by the riveting mold 4, so that the anti-rotation boss is deformed, thereby realizing the compression and fixing of the washer 2; thus facilitating the fixed installation of the washer 2 on the bolt body 1.

[0041] Specifically, the riveting mold 4 in this utility model includes a mold body 41, on which an axial positioning hole 42 is provided, and an annular flange 43 is provided at the edge of the axial positioning hole 42; an annular flange 43 is provided at the edge of the opening of one end of the axial positioning hole; in use, the annular flange 43 on the riveting mold 4 compresses the anti-rotation boss to achieve a fixed connection between the gasket 2 and the bolt body 1; in this utility model, the mold body 41 is the main structure of the riveting mold 4, and the setting of the axial positioning hole 42 plays a good role in avoiding interference between the bolt body 1 and the riveting mold 4 when the gasket 2 is riveted; the annular flange 43 acts as an external protrusion, and in subsequent use, the annular flange 43 compresses the anti-rotation boss, causing the anti-rotation boss to deform, thereby achieving compression and fixing of the gasket 2; facilitating the fixed installation of the gasket 2 on the bolt body 1.

[0042] Furthermore, in this invention, the annular flange 43 is provided with a guide arc surface 44 at the end away from the mold body 41. The guide arc surface 44 serves two purposes: firstly, it prevents the annular flange 43 from having a pointed protrusion at the end; secondly, it reduces the area at the end of the annular flange 43, thereby reducing the contact area between the annular flange 43 and the anti-rotation boss 13, making it easier to deform the anti-rotation boss 13 by subsequent compression. In addition, the guide arc surface 44 allows for better flow when the anti-rotation boss 13 deforms, and better filling of the assembly gap between the gasket 2 and the anti-rotation boss 13, thus ensuring the stability of the connection between the gasket 2 and the anti-rotation boss 13.

[0043] Obviously, the specific implementation of this utility model is not limited to the above-mentioned methods. Any non-substantial improvements made using the inventive concept and technical solution of this utility model are within the protection scope of this utility model.

Claims

1. An eccentric bolt, characterized in that The bolt body comprises a screw rod and a nut arranged at the end of the screw rod; the screw rod is provided with an anti-rotation boss at the end close to the nut; the gasket is sleeved on the anti-rotation boss; The screw rod is provided with a positioning groove at the end away from the nut.

2. An eccentric bolt according to claim 1, wherein The horizontal projection of the anti-rotation boss is a polygon.

3. Eccentric bolt according to any of claims 1-2, characterized in that The horizontal projection of the nut and the anti-rotation boss are both regular hexagons.

4. An eccentric bolt according to claim 3, wherein The edges on the anti-rotation boss are distributed in a staggered manner with the edges on the nut.

5. A swaging device for producing the eccentric bolt according to any one of claims 1 to 3, characterized in that, The riveting die comprises a die body, the die body is provided with an axial positioning hole, and the edge of the axial positioning hole is provided with an annular flange.

6. A riveting device according to claim 5, wherein The annular flange is provided with a guide circular arc surface at the end away from the die body.

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