An eccentric bolt connection adjusting structure

Abstract

The utility model relates to an eccentric bolt connection adjusting structure, including eccentric bolt, mounting support and 2 U shape structure's U shape limit block, be equipped with bolt long hole on mounting support, 2 U shape limit blocks are respectively symmetrical and install on mounting support, and the bolt long hole is located in the U shape mouth of U shape limit block, and the eccentric bolt is arranged in the bolt long hole through eccentric gasket and lock nut. When using, set up U shape limit block on mounting support through the welding mode, solved the problem that the machining precision requirement of prior art mounting support limit boss is high, reduce processing difficulty. Meanwhile the utility model structure has the characteristics such as simple structure, low manufacturing cost, accurate positioning, stable and reliable performance.

Description

Technical Field

[0001] This utility model relates to the field of machinery, and in particular to an eccentric bolt connection adjustment structure. Background Technology

[0002] Existing eccentric bolt adjustment mechanisms typically consist of an eccentric bolt, a mounting bracket, an eccentric washer, and a lock nut. The eccentric bolt has a hexagonal bolt head and an eccentric flange, the mounting bracket has a bolt hole and a limiting boss, and the eccentric washer has an eccentric hole. The mounting bracket is usually fixedly connected to the vehicle's frame or subframe, with the connected component (such as a suspension control arm) positioned in the middle of the mounting bracket and fitted over the eccentric bolt.

[0003] The existing technology has the following disadvantages in use:

[0004] 1) The limiting boss on the mounting bracket is formed by stamping. The stamping requirements are high because the rounded corners of the stamped boss are very small. Therefore, the requirements for the stamping die are high, which can easily lead to die wear.

[0005] 2) The limiting boss on the mounting bracket is formed by stamping. The limiting boss and the mounting plane must have transition fillets and draft angles. The transition fillets can easily cause the mounting plane to not fit smoothly with the eccentric flange and eccentric gasket of the eccentric bolt. The draft angle can easily cause the eccentric flange and eccentric gasket of the eccentric bolt 1 to be inaccurately positioned. Therefore, its transition fillets and draft angles will affect the accuracy of installation and adjustment.

[0006] 3) Because the mounting bracket and limiting boss do not fit smoothly with the eccentric flange and eccentric gasket 3 of the eccentric bolt, the contact is almost point or line contact, which will lead to reduced stability after repeated installation and adjustment. Summary of the Invention

[0007] The technical problem to be solved by this utility model is to provide an eccentric bolt connection adjustment structure to address the shortcomings of existing technologies, thereby solving problems such as high stamping requirements for the limiting boss, easy mold wear, and the impact of the transition radius and draft angle between the boss and the mounting plane on the accuracy and stability of installation and adjustment.

[0008] The technical solution to the above technical problem is: an eccentric bolt connection adjustment structure, including an eccentric bolt, a mounting bracket and two U-shaped limiting blocks with U-shaped structures. The mounting bracket is provided with bolt elongated holes, and the two U-shaped limiting blocks are symmetrically installed on the mounting bracket. The bolt elongated holes are located in the U-shaped openings of the U-shaped limiting blocks, and the eccentric bolt is set in the bolt elongated holes through eccentric washers and locking nuts.

[0009] A further technical solution of this utility model is as follows: the mounting bracket is a U-shaped structure composed of mounting plates, the mounting plates of the mounting bracket are symmetrical, and bolt elongated holes are symmetrically provided on the mounting plates. Each U-shaped limiting block is installed on a corresponding mounting plate, and the bolt elongated holes on the mounting plates are located in the U-shaped opening of the U-shaped limiting block. The eccentric gasket has an eccentric hole, and an inner hole protrusion is provided at the eccentric hole of the eccentric gasket. The eccentric bolt has a groove. The eccentric bolt has threads, one end of the eccentric bolt is a hexagonal bolt head, and an eccentric flange is provided at the hexagonal bolt head, with an eccentric distance between the center of the flange and the center of the bolt.

[0010] An eccentric bolt passes through the bolt's elongated hole. An eccentric washer is fitted onto the eccentric bolt, with the inner protrusion of the washer located within the groove of the eccentric bolt. A lock nut is tightened onto the eccentric bolt, thus securing the eccentric bolt to the mounting bracket. The eccentric washers and flanges at both ends of the eccentric bolt are located within U-shaped limiting blocks and contact the blocks for positioning.

[0011] Due to the adoption of the above technical solution, the eccentric bolt connection adjustment structure of this utility model has the following beneficial effects:

[0012] 1. This utility model uses a U-shaped limiting block for positioning. In use, the U-shaped limiting block is welded onto the mounting bracket, solving the problem of high machining accuracy requirements for the limiting bosses of existing mounting brackets and reducing machining difficulties. Furthermore, this utility model features a simple structure, low manufacturing cost, precise positioning, and stable and reliable performance.

[0013] 2. In this utility model, the U-shaped limiting block and the mounting bracket are processed separately. There are no transition radii or draft angles at the mounting plane of the U-shaped limiting block and the mounting bracket. This solves the problems in the prior art, such as high stamping requirements for the limiting boss, easy mold wear, and the impact of the transition radii and draft angles between the boss and the mounting plane on the accuracy and stability of installation and adjustment.

[0014] 3. The contact between the eccentric flange and eccentric gasket on the eccentric bolt and the U-shaped limiting block is a line or surface contact. Therefore, during the installation and adjustment of the eccentric bolt assembly, the eccentric flange and eccentric gasket of the eccentric bolt fit well with the plane of the mounting bracket and are accurately and effectively limited by the side of the U-shaped limiting block, ensuring high installation and adjustment accuracy and good stability.

[0015] The technical features of an eccentric bolt connection adjustment structure of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 : A schematic diagram of an eccentric bolt connection adjustment structure.

[0017] Figure 2 A schematic diagram of the exploded state of an eccentric bolt connection adjustment structure.

[0018] In the above figures, the reference numerals are explained as follows:

[0019] D1 - Eccentric bolt, D2 - Mounting bracket, D3 - U-shaped limit block, D4 - Eccentric washer, D5 - Locking nut, D301 - Positioning hole, D302 - Welding position, D303 - Welding point position. Detailed Implementation

[0020] An eccentric bolt connection adjustment structure includes an eccentric bolt, a mounting bracket, and two U-shaped limiting blocks. The mounting bracket has bolt elongated holes, and the two U-shaped limiting blocks are symmetrically mounted on the mounting bracket. The bolt elongated holes are located in the U-shaped openings of the U-shaped limiting blocks. The eccentric bolt is secured in the bolt elongated holes by an eccentric washer and a lock nut. Specifically, the mounting bracket is a U-shaped structure composed of mounting plates. The mounting plates of the mounting bracket are symmetrical, and each mounting plate has a corresponding U-shaped limiting block. The bolt elongated holes on the mounting plates are located in the U-shaped openings of the U-shaped limiting blocks.

[0021] The eccentric bolt has threads and grooves. One end of the eccentric bolt is a hexagonal bolt head with an eccentric flange. The center of the flange is eccentric to the center of the bolt. The eccentric washer has an eccentric hole with an inner protrusion. The eccentric bolt passes through the bolt's long hole, and the eccentric washer is fitted onto it. The inner protrusion of the eccentric washer is located within the groove of the eccentric bolt. A lock nut is tightened onto the eccentric bolt, thus securing the eccentric bolt to the mounting bracket.

[0022] The U-shaped limiting blocks and mounting brackets are processed separately. Two identical U-shaped limiting blocks are symmetrically arranged on the mounting bracket. Each U-shaped limiting block is connected to the mounting bracket by spot welding, with four spot welding points symmetrically arranged on each U-shaped limiting block. Positioning holes are correspondingly distributed on both the U-shaped limiting blocks and the mounting bracket, allowing for welding positioning and ensuring welding accuracy. During eccentric bolt installation, the eccentric bolt passes through the mounting bracket and connects to the eccentric washer and lock nut respectively. The inner protrusion of the eccentric washer mates with the groove of the eccentric bolt, with the inner protrusion of the eccentric washer located at the groove of the eccentric bolt. The flanges at both ends of the eccentric bolt and the eccentric washer fall into the U-shaped limiting blocks of the mounting bracket, with each U-shaped limiting block limiting the flange and eccentric washer respectively.

[0023] The eccentric bolt connection adjustment structure includes two identical U-shaped limit blocks and one mounting bracket. Raised parts are provided at both ends of the U-shaped limit block to form a limit block with a "ji" character structure. The U-shaped limit block and the mounting bracket are separately processed and then welded together by positioning. There are no transition fillets and draft angles on the mounting plane of the U-shaped limit block and the mounting bracket. Therefore, when the eccentric bolt assembly is installed and adjusted, the eccentric flange and eccentric gasket on the eccentric bolt contact the limit block in a line or surface contact. The plane fits well, and the side limit of the limit block is accurate and effective, ensuring a high installation and adjustment accuracy.

[0024] During use, the mounting bracket is fixedly connected to the vehicle frame or sub-frame of the vehicle. The connected part (such as a suspension control arm) is placed in the middle of the mounting bracket and sleeved outside the eccentric bolt. When adjustment is required, first loosen the lock nut (it may not need to be removed completely), and then rotate the eccentric bolt. The eccentric bolt will带动 the eccentric gasket on it to rotate together. Since the flange and eccentric gasket on the eccentric bolt are restricted by the U-shaped limit block, the eccentric bolt can only move along the bolt long hole direction of the mounting bracket, so as to achieve the function of adjusting the positions of the bolt and the connected part, meet the system use requirements, and then tighten the lock nut after adjusting to the appropriate position.

Claims

1. An eccentric bolt connection adjustment structure, characterized in that: It includes an eccentric bolt, a mounting bracket, and two U-shaped limiting blocks with U-shaped structures. The mounting bracket has bolt elongated holes, and the two U-shaped limiting blocks are symmetrically installed on the mounting bracket. The bolt elongated holes are located in the U-shaped openings of the U-shaped limiting blocks, and the eccentric bolt is set in the bolt elongated holes through an eccentric washer and a lock nut.

2. The eccentric bolt connection adjustment structure according to claim 1, characterized in that: The mounting bracket is a U-shaped structure made of mounting plates, with symmetrical bolt holes on the mounting plates.

3. The eccentric bolt connection adjustment structure according to claim 1, characterized in that: The eccentric washer has an eccentric hole, and the eccentric hole of the eccentric washer has an inner hole protrusion. The eccentric bolt has a groove.

4. The eccentric bolt connection adjustment structure according to claim 1, characterized in that: The eccentric bolt has threads, one end of which is a hexagonal bolt head. An eccentric flange is provided at the hexagonal bolt head, and there is an eccentricity between the center of the flange and the center of the bolt.

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