Pre-pressing positioning pin gasket

Abstract

The utility model discloses a pre-pressing locating pin gasket, which relates to the technical field of locating pin gaskets and comprises a locating pin body, a gasket is sleeved on the outer surface of the locating pin body, an annular bulge is arranged on the surface of the gasket, and a plurality of first elastic pressing blocks are fixedly connected on the outer surface of the annular bulge in a surrounding manner. And a limiting mechanism is arranged in the gasket. Through the design of the first elastic pressing block and the second elastic pressing block, in the installation process of the positioning pin, the gasket and the pin hole are matched more tightly through elastic restoring force generated by extrusion of the first elastic pressing block, and the positioning pin body is tightly attached to the gasket through the second elastic pressing block; and the stability of connection between the positioning pin and the pin hole is effectively enhanced. Even if the positioning pin is subjected to external force such as vibration and impact, the loosening phenomenon of the positioning pin can be prevented, the relative position stability between parts is ensured, and normal operation of equipment is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of positioning pin gasket technology, specifically to a pre-compression positioning pin gasket. Background Technology

[0002] In the field of mechanical manufacturing and assembly, locating pins are key components that ensure the relative positional accuracy of parts. Their positioning effect directly affects the overall performance and operational stability of the equipment. Locating pins are usually cylindrical, some with a taper, and are mostly made of medium carbon steel or alloy steel to ensure strength and wear resistance.

[0003] Locating pins present some problems in practical use. On the one hand, ordinary locating pins rely solely on their own fit with the pin hole for positioning during installation. When subjected to external forces such as vibration and impact, they are prone to loosening, causing changes in the relative positions of components and affecting the normal operation of the equipment. On the other hand, during assembly, there may be a certain gap between the locating pin and the pin hole, which will also reduce the accuracy and stability of positioning. Utility Model Content

[0004] In view of the problems existing in the above-mentioned positioning pins, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a pre-compressed positioning pin washer, which solves the problem that when the positioning pin is installed, it relies solely on its own fit with the pin hole for positioning. When subjected to external forces such as vibration and impact, it is prone to loosening. At the same time, during the assembly process, there may be a certain gap between the positioning pin and the pin hole, which will also reduce the accuracy and stability of positioning.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A pre-compression positioning pin gasket includes a positioning pin body, a gasket sleeved on the outer surface of the positioning pin body, an annular protrusion on the surface of the gasket, a plurality of first elastic compression blocks fixedly connected around the outer surface of the annular protrusion, a limiting mechanism provided inside the gasket, the positioning pin body matching the limiting mechanism, and a plurality of second elastic compression blocks symmetrically fixedly connected to the inner wall of the gasket, each of the second elastic compression blocks fitting against the positioning pin body.

[0008] Preferably, the limiting mechanism includes two limiting blocks, which are symmetrically fixedly connected to the inner wall of the gasket. Two limiting grooves are symmetrically opened on the outer surface of the positioning pin body, and the two limiting blocks are slidably disposed in the corresponding limiting grooves.

[0009] Preferably, each of the first elastic clamping blocks and each of the second elastic clamping blocks is hemispherical.

[0010] Preferably, the cross-section of the annular protrusion is trapezoidal.

[0011] Preferably, the outer surface of the positioning pin body is symmetrically provided with two planes, and the two planes are respectively matched with the corresponding second elastic clamping blocks.

[0012] Preferably, each of the first elastic clamping blocks and each of the second elastic clamping blocks is made of rubber with good wear resistance.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] 1. This utility model, through the design of a first elastic clamping block and a second elastic clamping block, ensures a tighter fit between the gasket and the pin hole during the installation of the positioning pin. The first elastic clamping block, under compression, generates an elastic restoring force that makes the gasket fit more tightly against the pin hole. The second elastic clamping block further ensures a close fit between the positioning pin body and the gasket, effectively enhancing the stability of the connection between the positioning pin and the pin hole. Even under external forces such as vibration and impact, it prevents the positioning pin from loosening, ensuring the relative positional stability of the components and guaranteeing the normal operation of the equipment.

[0015] 2. In this utility model, the limiting block in the limiting mechanism cooperates with the upper positioning groove of the positioning pin body to ensure that the gasket can be accurately positioned with the positioning pin body during installation, preventing the gasket from rotating and thus improving the positioning accuracy. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 For the present utility model Figure 1 Top view of the middle gasket;

[0019] Figure 3 For the present utility model Figure 1 A three-dimensional view of the center positioning pin body.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Locating pin body; 2. Gasket; 3. Annular protrusion; 4. First elastic clamping block; 5. Second elastic clamping block; 6. Limiting block. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] This utility model discloses a pre-compression positioning pin gasket.

[0024] This utility model provides, for example Figure 1-3 The pre-compression positioning pin gasket shown includes a positioning pin body 1, a gasket 2 sleeved on the outer surface of the positioning pin body 1, an annular protrusion 3 on the surface of the gasket 2, and a plurality of first elastic pressing blocks 4 fixedly connected around the outer surface of the annular protrusion 3. A limiting mechanism is provided inside the gasket 2, and the positioning pin body 1 is matched with the limiting mechanism. A plurality of second elastic pressing blocks 5 are symmetrically fixedly connected to the inner wall of the gasket 2. Each second elastic pressing block 5 is in contact with the positioning pin body 1. Each first elastic pressing block 4 and each second elastic pressing block 5 is hemispherical, and each first elastic pressing block 4 and each second elastic pressing block 5 is made of rubber with good wear resistance.

[0025] When installing the positioning pin body 1, first place the gasket 2 on the outer surface of the positioning pin body 1, then insert the positioning pin body 1 into the pin hole. Subsequently, each first elastic clamping block 4 will first contact the inner wall of the pin hole. As the positioning pin body 1 is gradually inserted, the first elastic clamping block 4 is squeezed and deformed, generating an elastic restoring force, thereby applying a pre-clamping force to the gasket 2, making the fit between the gasket 2 and the pin hole tighter. Similarly, each second elastic clamping block 5 can make the fit between the positioning pin body 1 and the gasket 2 even tighter.

[0026] To prevent gasket 2 from rotating, such as Figure 1-3 As shown, the limiting mechanism includes two limiting blocks 6, which are symmetrically fixed to the inner wall of the gasket 2. Two limiting grooves are symmetrically opened on the outer surface of the positioning pin body 1, and the two limiting blocks 6 are respectively slidably disposed in the interior of the corresponding limiting grooves.

[0027] When the positioning pin body 1 is inserted into the gasket 2, the two limiting blocks 6 slide into the corresponding limiting grooves to ensure that the gasket 2 can be accurately positioned with the positioning pin body 1 during installation and to prevent the gasket 2 from rotating.

[0028] To facilitate the insertion of the locating pin body 1 into the pin hole, such as Figure 1-2 As shown, the cross-section of the annular protrusion 3 is trapezoidal.

[0029] Because the cross-section of the annular protrusion 3 is trapezoidal, it is convenient to slide the positioning pin body 1 into the interior of the pin hole.

[0030] To facilitate the compression of the two corresponding second elastic clamping blocks 5, such as Figure 3As shown, the outer surface of the positioning pin body 1 is symmetrically provided with two planes, and the two planes are respectively matched with the corresponding second elastic clamping block 5.

[0031] The two planes can be used to easily compress the corresponding second elastic clamping block 5.

[0032] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A pre-compression positioning pin washer, comprising a positioning pin body (1), characterized in that, A gasket (2) is fitted onto the outer surface of the positioning pin body (1). An annular protrusion (3) is provided on the surface of the gasket (2). Multiple first elastic pressing blocks (4) are fixedly connected around the outer surface of the annular protrusion (3). A limiting mechanism is provided inside the gasket (2). The positioning pin body (1) is matched with the limiting mechanism. Multiple second elastic pressing blocks (5) are symmetrically fixedly connected to the inner wall of the gasket (2). Each second elastic pressing block (5) is in contact with the positioning pin body (1).

2. The pre-compression positioning pin washer according to claim 1, characterized in that, The limiting mechanism includes two limiting blocks (6), which are symmetrically fixed to the inner wall of the gasket (2). The outer surface of the positioning pin body (1) has two symmetrically opened limiting grooves, and the two limiting blocks (6) are respectively slidably arranged inside the corresponding limiting grooves.

3. The pre-compression positioning pin washer according to claim 1, characterized in that, Each of the first elastic clamping block (4) and each of the second elastic clamping blocks (5) is hemispherical.

4. The pre-compression positioning pin washer according to claim 1, characterized in that, The cross-section of the annular protrusion (3) is trapezoidal.

5. The pre-compression positioning pin washer according to claim 1, characterized in that, The outer surface of the positioning pin body (1) is symmetrically provided with two planes, and the two planes are respectively matched with the corresponding second elastic pressing block (5).

6. The pre-compression positioning pin washer according to claim 1, characterized in that, Each of the first elastic clamping block (4) and each of the second elastic clamping blocks (5) is made of rubber with good wear resistance.

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