Pin positioning structure capable of being quickly disassembled and assembled

Abstract

The utility model provides a pin positioning structure capable of being quickly disassembled and assembled, which comprises an upper workpiece, a lower workpiece and a pin positioning mechanism, the pin positioning mechanism comprises a pin fixing seat, a pin drawing block, a positioning bolt and a compression spring, one end of the upper workpiece is provided with a pin accommodating cavity, and the lower end of the pin accommodating cavity is provided with a pin through hole; the positioning bolt comprises a bolt rod and a bolt head arranged at one end of the bolt rod, one end of the bolt head penetrates through the pin through hole, the other end of the bolt head is provided with an annular limiting baffle with the diameter larger than that of the pin through hole, the pin fixing base covers the upper end of the pin containing cavity and is provided with a pin penetrating hole, and the other end of the bolt rod penetrates through the pin penetrating hole and then is connected with the pin drawing block. The compression spring is arranged in the pin containing cavity and arranged between the annular limiting baffle and the lower end of the pin fixing base, and a positioning inserting hole matched with the plug pin head is formed in one end of the lower workpiece. The positioning device is simple in structure, convenient to operate, low in cost and capable of achieving effective positioning between workpieces and facilitating rapid disassembly and assembly of products.

Description

Technical Field

[0001] The utility model relates to the field of parts positioning, in particular to a pin positioning structure which can be quickly disassembled and assembled. Background Art

[0002] The existing structure for positioning two parts is: anaerobic glue is applied to the pin, and it is knocked into the pin hole to form a tight fit. Although this positioning method can limit the rotation and translation between parts, when frequent disassembly and installation are required, it is very difficult to remove the positioning pin. It needs to be forcibly knocked out with a hammer, which makes disassembly and assembly inconvenient. Utility Model Content

[0003] In order to solve the problem of inconvenient assembly and disassembly of positioning pins in the prior art, the utility model provides a pin positioning structure that can be quickly assembled and disassembled.

[0004] The cam is secured to the upper edge of the workpiece and is adapted to engage the cam of the locking cam, the cam being secured to the lower edge of the workpiece and adapted to engage the cam of the locking cam.

[0005] As a further improvement of the present invention, the lower end of the pin pulling block is threadedly connected to the pin rod.

[0006] As a further improvement of the present invention, a pull ring is provided at the upper end of the pin pulling block.

[0007] As a further improvement of the present invention, the compression spring is a coil spring and is sleeved on the latch rod.

[0008] As a further improvement of the present invention, one end of the pin fixing seat is fixed to the upper workpiece by a fixing screw.

[0009] As a further improvement of the present invention, there are two fixing screws.

[0010] As a further improvement of the present invention, one side of the pin pulling block is provided with a limiting portion extending toward the lower end of the upper workpiece side surface.

[0011] As a further improvement of the present invention, the pin pulling block is provided with a mounting hole, and the pull ring passes through the mounting hole.

[0012] The beneficial effects of the utility model are: the utility model has a simple structure, is easy to operate, has a low cost, can realize effective positioning between workpieces, and is convenient for rapid disassembly and assembly of products. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of a pin positioning structure that can be quickly disassembled and assembled in the utility model;

[0014] Figure 2 It is a cross-sectional view of a pin positioning structure that can be quickly disassembled and assembled according to the present invention.

[0015] Figure numerals: 1-upper workpiece; 2-lower workpiece; 3-pin fixing seat; 4-pin pulling block; 5-positioning pin; 6-compression spring; 7-pull ring; 51-pin rod; 52-pin head. DETAILED DESCRIPTION

[0016] In the description of the present invention, it should be understood that if there are descriptions involving orientation, such as orientations or positional relationships indicated by up, down, front, back, left, and right, the orientation descriptions may be based on the orientations or positional relationships shown in the accompanying drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0017] In the description of this utility model, if there is a quantity, "several" means one or more, "more" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of the terms "first" and "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, or implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0018] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0019] like Figure 1 、 Figure 2As shown, the utility model discloses a pin positioning structure that can be quickly disassembled and assembled, including an upper workpiece 1, a lower workpiece 2 and a pin positioning mechanism, the pin positioning mechanism includes a pin fixing seat 3, a pin pulling block 4, a positioning latch 5 and a compression spring 6, one end of the upper workpiece 1 is provided with a pin accommodating cavity, the lower end of the pin accommodating cavity is provided with a pin through hole, the positioning latch 5 includes a latch rod 51 and a latch head 52 provided at one end of the latch rod 51, one end of the latch head 52 passes through the pin Through hole, the other end of the pin head 52 is provided with an annular limit baffle with a diameter larger than the diameter of the pin through hole, the pin fixing seat 3 covers the upper end of the pin accommodating cavity and is provided with a pin through hole, the other end of the pin rod 51 is connected to the pin pulling block 4 after passing through the pin through hole, the compression spring 6 is placed in the pin accommodating cavity and is arranged between the annular limit baffle and the lower end of the pin fixing seat 3, and one end of the lower workpiece 2 is provided with a positioning socket adapted to the pin head 52.

[0020] When installing, first install the positioning latch 5 and compression spring 6 in the pin accommodating cavity of the upper workpiece 1, so that the pin head 52 of the positioning latch 5 passes through the pin through-hole at the lower end and is inserted into the positioning socket of the lower workpiece 2, then the pin fixing seat 3 is covered with the upper end of the pin accommodating cavity so that the upper end of the pin rod 51 of the positioning latch 5 passes through the pin through-hole and the compression spring 6 is placed between the annular limit baffle and the pin fixing seat 3 to ensure that the pin head 52 is in a downwardly extended state in a natural state, and the upper end of the pin rod 51 is connected to the pin pulling block 4. By pulling the pin pulling block 4, the positioning latch 5 can be driven to move upward, so that its pin head 52 can be disengaged from the positioning socket of the lower workpiece 2. In this way, the limit between the upper workpiece 1 and the lower workpiece 2 can be released, thereby realizing the rotation limit or translation limit between the upper workpiece 1 and the lower workpiece 2, and ensuring effective positioning between the parts.

[0021] In the present invention, the lower end of the pin pulling block 4 is threadedly connected to the latch rod 51 , which facilitates the disassembly and assembly of the latch rod 51 and the pin pulling block 4 .

[0022] In the present invention, a pull ring 7 is provided on the upper end of the pin pulling block 4 to facilitate hand-pulling the pin pulling block 4 .

[0023] In the present invention, the compression spring 6 is a coil spring and is sleeved on the latch rod 51 , which does not take up space and is convenient for installation.

[0024] In the present invention, one end of the pin fixing seat 3 is fixed to the upper workpiece 1 by a fixing screw. In this embodiment, there are two fixing screws, which can facilitate the disassembly and assembly of the pin fixing seat 3.

[0025] In the present invention, one side of the pin pulling block 4 is provided with a limiting portion extending toward the lower end of the side surface of the workpiece 1, which can play a limiting role and prevent the pin pulling block 4 from rotating at will.

[0026] In the present invention, the pin pulling block 4 is provided with a mounting hole, and the pull ring 7 passes through the mounting hole, which facilitates the installation of the pull ring 7.

[0027] The utility model has the advantages of simple structure, convenient operation and low cost.

[0028] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A pin positioning structure that can be quickly disassembled and assembled, characterized in that: The cam is secured to the upper and lower ends of the cams and is secured to the bottom ends of the cams and is adapted to engage said retaining members of the user's arm.

2. The quickly detachable pin positioning structure according to claim 1, characterized in that: The lower end of the pin pulling block is threadedly connected to the latch rod.

3. The quickly detachable pin positioning structure according to claim 2, characterized in that: A pull ring is provided at the upper end of the pin pulling block.

4. The quickly detachable pin positioning structure according to claim 1, characterized in that: The compression spring is a coil spring and is sleeved on the latch rod.

5. The quickly detachable pin positioning structure according to claim 1, characterized in that: One end of the pin fixing seat is fixed on the upper workpiece by a fixing screw.

6. The quickly detachable pin positioning structure according to claim 5, characterized in that: There are two fixing screws.

7. The quickly detachable pin positioning structure according to claim 1, characterized in that: One side of the pin pulling block is provided with a limiting portion extending toward the lower end of the side surface of the upper workpiece.

8. The quickly detachable pin positioning structure according to claim 3, characterized in that: The pin pulling block is provided with a mounting hole, and the pull ring passes through the mounting hole.

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