Anti-loosening positioning pin structure

Abstract

The utility model relates to the technical field of locating pins, in particular to an anti-loosening locating pin structure which comprises a locating pin body, an anti-loosening mechanism is arranged in the locating pin body and composed of a fixing block, an unlocking push rod, a reset spring and a locking block, the fixing block is fixedly installed in the locating pin, through holes are formed in the periphery of the fixing block, and the unlocking push rod is arranged in the through holes. An unlocking push rod penetrates through the through hole and can slide in the through hole, one end of the unlocking push rod is fixedly connected with the locking block, the periphery of the unlocking push rod is sleeved with a reset spring, one end of the reset spring is fixedly connected with the locking block, and the other end of the reset spring is fixedly connected with the fixing block. In the utility model, the locking block is extruded to compress the reset spring until the reset spring is in contact with the groove, and the locking block is inserted into the groove under the reset action of the reset spring, so that the locking of the positioning pin and the positioning hole is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning pins, in particular to an anti-loosening positioning pin structure. Background Art

[0002] As a common mechanical connecting piece, the positioning pin is widely used in various mechanical equipment. Its main function is to position and fix components to ensure that the relative positions of components remain unchanged during the operation of the mechanical equipment.

[0003] However, in practical applications, the positioning pin often faces the problems of loosening or falling off, which not only affects the normal operation of the equipment but may also lead to equipment failures or safety accidents. Summary of the Invention

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose an anti-loosening positioning pin structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An anti-loosening positioning pin structure includes a positioning pin body, and an anti-loosening mechanism is arranged inside the positioning pin body. The anti-loosening mechanism consists of a fixed block, an unlocking push rod, a return spring, and a locking block. The fixed block is fixedly installed inside the positioning pin. Through holes are opened on all four sides of the fixed block. The unlocking push rod passes through the through holes and can slide inside the through holes. One end of the unlocking push rod is fixedly connected to the locking block, and a return spring is sleeved outside the unlocking push rod. One end of the return spring is fixedly connected to the locking block, and the other end of the return spring is fixedly connected to the fixed block.

[0007] In addition, a preferred structure is that a cross slot adapted to the unlocking push rod is opened at the top of the positioning pin body.

[0008] In addition, a preferred structure is that the unlocking push rod extends out from the cross slot.

[0009] In addition, a preferred structure is that the unlocking push rod is in an "L" shape.

[0010] In addition, a preferred structure is that four square slots adapted to the locking block are opened on the outer wall of the positioning pin body in a circle.

[0011] In addition, a preferred structure is that the locking block extends out from the square slot, and one side of the locking block is arc-shaped.

[0012] The beneficial effects of the utility model are as follows:

[0013] In this embodiment, by squeezing the locking block to compress the return spring until it touches the groove, the locking block is inserted into the groove under the reset action of the return spring, ensuring the locking of the positioning pin and the positioning hole. Description of the Drawings

[0014] Figure 1 This is a schematic diagram of the complete structure of a loosening - proof positioning pin structure proposed by the present utility model;

[0015] Figure 2 This is a schematic diagram of the positioning pin main body structure of a loosening - proof positioning pin structure proposed by the present utility model;

[0016] Figure 3 This is a schematic diagram of the loosening - proof mechanism structure of a loosening - proof positioning pin structure proposed by the present utility model;

[0017] Figure 4 This is a schematic diagram of the fixed block structure of a loosening - proof positioning pin structure proposed by the present utility model.

[0018] In the figure: 1 is the positioning pin main body, 11 is the square groove, 12 is the cross - groove, 2 is the loosening - proof mechanism, 21 is the locking block, 22 is the return spring, 23 is the unlocking push rod, 24 is the fixed block, and 241 is the through - hole. Detailed Description of the Invention

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0020] Refer to Figures 1-4 , a loosening - proof positioning pin structure includes a positioning pin main body 1. A loosening - proof mechanism 2 is arranged inside the positioning pin main body 1. The loosening - proof mechanism 2 is composed of a fixed block 24, an unlocking push rod 23, a return spring 22, and a locking block 21. The fixed block 24 is fixedly installed in the positioning pin. Through - holes 241 are opened around the fixed block 24. The unlocking push rod 23 passes through the through - holes 241 and can slide in the through - holes 241. One end of the unlocking push rod 23 is fixedly connected to the locking block 21, and a return spring 22 is sleeved around the unlocking push rod 23. One end of the return spring 22 is fixedly connected to the locking block 21, and the other end of the return spring 22 is fixedly connected to the fixed block 24.

[0021] Among them, a cross - groove 12 adapted to the unlocking push rod 23 is opened at the top of the positioning pin main body 1.

[0022] At the same time, the unlocking push rod 23 extends out from the cross - groove 12.

[0023] At the same time, the unlocking push rod 23 is in an "L" shape.

[0024] At the same time, four square grooves 11 adapted to the locking block 21 are opened on the outer wall of the positioning pin main body 1 in one week.

[0025] And, the locking block 21 extends out from the square groove 11, and one side of the locking block 21 is arc - shaped.

[0026] In this embodiment, by inserting the positioning pin into the positioning hole, since one side of the locking block 21 is arc-shaped, the locking block 21 will squeeze and compress the return spring 22, and at the same time push the unlocking push rod 23 to slide inward. Until the locking block 21 contacts the groove in the positioning hole, under the reset action of the return spring 22, the locking block 21 is inserted into the groove for locking. When unlocking is required, just push the unlocking push rods 23 in opposite directions. The unlocking push rod 23 drives the locking block 21 to compress the return spring 22 until the locking block 21 is removed from the groove and the positioning pin is pulled out, realizing the unlocking of the positioning pin.

[0027] In this new type of implementation, by squeezing the locking block 21 to compress the return spring 22 until it contacts the groove, the locking block 21 is inserted into the groove under the reset action of the return spring 22, ensuring the locking of the positioning pin and the positioning hole.

[0028] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A loosening-preventing positioning pin structure, comprising a positioning pin body (1), characterized in that, A anti-loosening mechanism (2) is arranged inside the positioning pin body (1). The anti-loosening mechanism (2) is composed of a fixed block (24), an unlocking push rod (23), a return spring (22), and a locking block (21). The fixed block (24) is fixedly installed inside the positioning pin. Through holes (241) are formed around the fixed block (24). The unlocking push rod (23) passes through the through holes (241) and can slide in the through holes (241). One end of the unlocking push rod (23) is fixedly connected to the locking block (21), and a return spring (22) is sleeved outside the unlocking push rod (23). One end of the return spring (22) is fixedly connected to the locking block (21), and the other end of the return spring (22) is fixedly connected to the fixed block (24).

2. The anti-loosening positioning pin structure according to claim 1, characterized in that, A cross slot (12) adapted to the unlocking push rod (23) is formed at the top of the positioning pin body (1).

3. A loosening prevention positioning pin structure according to claim 2, characterized in that, The unlocking push rod (23) extends out from the cross slot (12).

4. The anti-loosening positioning pin structure according to claim 3, characterized in that, The unlocking push rod (23) is in an "L" shape.

5. A loosening prevention positioning pin structure according to claim 1, characterized in that, Four square slots (11) adapted to the locking block (21) are formed in a circle on the outer wall of the positioning pin body (1).

6. The anti-loosening positioning pin structure according to claim 1, characterized in that, The locking block (21) extends out from the square slot (11), and one surface of the locking block (21) is arc-shaped.

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