A positioning pin

Abstract

The utility model relates to a pin, especially a positioning pin, which comprises a body, an adjusting block, the adjusting block is arranged in the inner lower part of the body in circumferential interval, and an adjusting handle, which is arranged in the interior of the body. The utility model makes the adjusting block extrude the adjusting block with the inclined guide pillar by rotating the adjusting block, the adjusting block expands outward, and the positioning pin is tightly connected with the pin hole, which makes the positioning pin adapt to pin holes of different sizes and effectively solves the problem that the existing positioning pin requires high size precision of the pin hole.

Description

Technical Field

[0001] This utility model relates to a pin, and more particularly to a positioning pin. Background Technology

[0002] Locating pins are commonly used components in mechanical assembly, primarily used to ensure that workpieces or components can be accurately positioned in predetermined locations. Through their engagement with pin holes, locating pins restrict the degrees of freedom of the workpiece or component, thereby ensuring assembly accuracy.

[0003] Existing locating pins typically consist of one or more cylindrical surfaces, which makes the dimensional accuracy of the pin holes critical. If the pin hole is too large, the locating pin is prone to loosening, affecting positioning accuracy; if the pin hole is too small, the locating pin is difficult to install, increasing assembly difficulty. Utility Model Content

[0004] In order to overcome the shortcomings of existing locating pins that require high dimensional accuracy of the pin hole, the purpose of this utility model is to provide a locating pin.

[0005] The technical solution of this utility model is as follows:

[0006] A positioning pin, comprising:

[0007] ontology;

[0008] Adjusting blocks, the adjusting blocks being circumferentially spaced within the lower inner part of the body; and

[0009] An adjustment handle is located inside the body.

[0010] Furthermore, it is particularly preferred that the upper part of the body is a cylindrical tube with internal threads inside.

[0011] Furthermore, it is particularly preferred that the lower part of the body consists of circumferentially spaced connecting blocks, with each connecting block connected to the adjusting block in pairs.

[0012] Furthermore, it is particularly preferred that the adjusting handle has an external thread in the middle, which is adapted to the internal thread on the cylindrical tube.

[0013] Furthermore, it is particularly preferred that the top of the adjusting handle has a rotating opening, which is a straight-line opening.

[0014] Furthermore, it is particularly preferred that the lower part of the adjusting handle is an inclined guide post.

[0015] Furthermore, it is particularly preferred that the diameter of the top end of the inclined guide post is larger than the diameter of its bottom end, and the diameter of the inclined guide post gradually decreases from its top end to its bottom end.

[0016] Furthermore, it is particularly preferred that the adjusting block is a wedge-shaped block.

[0017] Furthermore, it is particularly preferred that each of the adjusting blocks is provided with an inclined surface, and the inclined surface abuts against the inclined guide post.

[0018] Furthermore, it is particularly preferred that the body is made of alloy tool steel.

[0019] Beneficial effects: This invention expands the adjusting block that contacts the inclined guide post by rotating the adjusting block, allowing the positioning pin to adapt to pin holes of different sizes, effectively solving the problem of high pin hole dimensional accuracy requirements in existing positioning pins. Even if there is a certain deviation in the pin hole size, the positioning pin can still achieve a tight fit between the positioning pin and the pin hole by rotating the adjusting block. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This is an exploded view of the present invention.

[0022] Figure 3 This is a three-dimensional structural diagram of the adjusting block of this utility model.

[0023] Figure 4 This is a cross-sectional view of the main body of this utility model.

[0024] The labels in the diagram are as follows: 1_body, 101_cylindrical tube, 102_connecting block, 2_adjusting block, 201_sloping surface, 3_adjusting handle, 301_rotating port, 302_external thread, 303_sloping guide post. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0026] A type of positioning pin, such as Figures 1-4As shown, the device includes a body 1, an adjusting handle 3, and adjusting blocks 2. The body 1 is made of alloy tool steel, which is suitable for frequently disassembled positioning pins. The upper part of the body 1 is a cylindrical tube 101 with internal threads. Multiple adjusting blocks 2 are spaced circumferentially on the lower inner part of the body 1. The lower part of the body 1 also has circumferentially spaced connecting blocks 102, which are connected to the adjusting blocks 2 in pairs. The adjusting handle 3 is connected to the upper inner part of the body 1, and the middle of the adjusting handle 3 has an external thread 302 that matches the internal thread on the cylindrical tube 101. The adjusting blocks 2 are inserted into the lower inner part of the body 1, and then the adjusting handle 3 is screwed into the body 1. By rotating the adjusting handle 3, the position of the adjusting handle 3 within the body 1 can be controlled. The adjusting handle 3 moves up and down. A rotating opening 301 is located at the top of the adjusting handle 3. The rotating opening 301 is a straight opening. The lower part of the adjusting handle 3 is a slanted guide post 303. The diameter of the top of the slanted guide post 303 is larger than its bottom diameter, and the diameter of the slanted guide post 303 gradually decreases from its top to its bottom. The adjusting block 2 is a wedge-shaped block, and each adjusting block 2 has a slanted surface 201 that abuts against the slanted guide post 303. The positioning pin is placed into the pin hole. If the size of the pin hole is slightly larger than the positioning pin, and the connection between the pin hole and the positioning pin is unstable, the adjusting handle 3 can be rotated to move it downwards. The slanted guide post 303 will press against the adjusting block 2, causing the adjusting blocks 2 to move away from each other. The adjusting block 2 will then abut against the pin hole, thus making the positioning pin tightly connected to the pin hole.

[0027] Before using this locating pin, it should be assembled first. (See reference) Figure 2Four adjusting blocks 2 are inserted into the body 1 through the upper opening, such that each adjusting block 2 is positioned between two connecting blocks 102, with the thicker side of each adjusting block 2 closer to the lower part of the connecting block 102. Then, the adjusting handle 3 is inserted into the body 1. The body 1 and the adjusting handle 3 are threaded together via the external thread 302 on the upper cylindrical tube 101 of the body 1. When using the positioning pin, it is directly inserted into the pin hole. A tool is inserted into the rotating port 301, and the rotating port 301 is rotated by the tool, causing the adjusting handle 3 to rotate counterclockwise, thus lowering the adjusting handle 3. The inclined guide post 303... As the inclined guide post 303 moves downward, it presses against the inclined surface 201, causing the adjusting blocks 2 to move away from each other. The adjusting block 2 then contacts the pin hole, at which point the positioning pin will be tightly connected to the pin hole, providing a locking effect. If the positioning pin needs to be removed, the rotating port 301 can be rotated clockwise, causing the adjusting handle 3 to rotate clockwise. At this time, the adjusting handle 3 will rise, and the inclined guide post 303 will rise. During the upward movement of the inclined guide post 303, the adjusting block 2 will automatically retract. When the inclined guide post 303 returns to its initial position, the adjusting block 2 will also retract to its initial position. At this time, the positioning pin is in an unlocked state (i.e., the positioning pin is no longer tightly connected to the pin hole).

[0028] Although this disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made to this disclosure without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of this disclosure should not be limited to the above embodiments, but should be defined not only by the appended claims, but also by their equivalents.

Claims

1. A positioning pin, characterized in that, include: Ontology (1): Adjustment blocks (2), which are circumferentially spaced within the lower part of the body (1); and Adjustment handle (3) is disposed inside the body (1).

2. A positioning pin according to claim 1, characterized in that: The upper part of the body (1) is a cylindrical tube (101), and the inside of the cylindrical tube (101) is provided with internal threads.

3. A positioning pin according to claim 2, characterized in that: The lower part of the body (1) consists of circumferentially spaced connecting blocks (102), and each connecting block (102) is connected to the adjusting block (2) in pairs.

4. A positioning pin according to claim 3, characterized in that: The adjusting handle (3) has an external thread (302) in the middle, which is adapted to the internal thread on the cylindrical tube (101).

5. A positioning pin according to claim 4, characterized in that: The top of the adjusting handle (3) has a rotating opening (301), which is a straight opening.

6. A positioning pin according to claim 5, characterized in that: The lower part of the adjusting handle (3) is an inclined guide post (303).

7. A positioning pin according to claim 6, characterized in that: The top diameter of the inclined guide post (303) is larger than its bottom diameter, and the diameter of the inclined guide post (303) gradually decreases from its top to its bottom.

8. A positioning pin according to claim 7, characterized in that: The adjusting block (2) is a wedge-shaped block.

9. A positioning pin according to claim 8, characterized in that: Each of the adjustment blocks (2) is provided with an inclined surface (201), and the inclined surface (201) abuts against the inclined guide post (303).

10. A positioning pin according to claim 9, characterized in that: The body (1) is made of alloy tool steel.

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