Positioning screw capable of being quickly disassembled and assembled

By designing a quick disassembly and assembly positioning screw including threaded part, cylindrical pin part, tapered connection part and tightening part, the shortcomings of existing screws in terms of positioning accuracy and disassembly and assembly efficiency are solved, and high-precision positioning and rapid disassembly are achieved. Installation significantly improves installation efficiency.

CN222458031UActive Publication Date: 2025-02-11JIAXING ZHONGRUI HARDWARE PROD CO LTD
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Patent Information

Application Number
CN202421406741.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-19
Publication Date
2025-02-11
Estimated Expiration
2034-06-19

AI Technical Summary

Technical Problem

The existing screws have shortcomings in positioning accuracy and disassembly and assembly efficiency, especially in scenarios where repeated disassembly and positioning are inconvenient to use special process devices, good positioning accuracy cannot be obtained, and the disassembly process is troublesome.

Method used

A quick disassembly and assembled positioning screw is designed, which includes a threaded part, a cylindrical pin part, a tapered connection part and a tightening part. By designing that the diameter of the cylindrical pin part is larger than the diameter of the threaded part and the tapered connection part, high precision is achieved Positioning and quick disassembly.

Benefits of technology

By reducing the fitting gap between the threaded part and the base body and achieving self-centered compression, the positioning accuracy and disassembly speed are improved, the trouble of using tools is avoided, and the installation is significantly improved in places where the space is small or needs frequent disassembly. efficiency.

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Abstract

The utility model discloses a quick disassembly and assembly positioning screw, which relates to the technical field of screws and comprises a screw main body, the screw main body sequentially comprises a thread part, a cylindrical pin part, a conical connecting part and a tightening part connecting column, the thread part is a cylinder, and threads are arranged on the outer wall of the thread part; the diameter of the cylindrical pin part is larger than that of the threaded part, so that after the threaded part is in threaded connection with the base body, the cylindrical pin part and the corresponding cylindrical pin hole can be mutually restrained and limited, and the fit clearance between the threaded part and the base body is greatly reduced; the self-centering and pressing effects of the screw are achieved through the conical connecting part, the handle is arranged, use is convenient, direct installation can be achieved without tools, the screw can be conveniently used on holes made of various hard materials, the applicable hole diameter range is large, the applicable hole types are multiple, and the screw is used in the narrow space or places where frequent disassembly is needed. And the disassembly and assembly speed can be greatly improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of screws, in particular to a quick disassembly and assembly positioning screw. Background Art

[0002] The countersunk screw has a cone-shaped head with a groove on the top surface for easy tightening by tools. The countersunk screw is generally used to connect two objects, and the above-mentioned cone can play a certain degree of centering and positioning role.

[0003] The traditional flat head screw is formed by tapping a whole casting. Due to the problem of its own structure, the length of the screw can only be selected according to the depth of the thread.

[0004] However, although some ordinary screws in the prior art have connection, locking and positioning functions, they only rely on the threaded part for connection and locking, which will make the thread matching gap larger and lead to low positioning accuracy. Especially in some scenarios where repeated disassembly and positioning are required but it is not convenient to use special process equipment, good positioning accuracy cannot be obtained, and it is very troublesome to take out the screws. In some places where the installation space is slender and narrow, it is not convenient to fix and lock. In some parts that need to be disassembled frequently and require relatively large force to fix, the use of ordinary screws is relatively inefficient and cannot be locked without a wrench. Utility Model Content

[0005] The purpose of the utility model is to provide a quick disassembly and assembly positioning screw, which can solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a quick disassembly and assembly positioning screw, comprising a screw body, wherein the screw body comprises a threaded portion, a cylindrical pin portion, a conical connecting portion, and a tightening portion connecting column in sequence, wherein the threaded portion is a cylinder, and a thread is provided on the outer wall; the cylindrical pin portion is a cylinder, and its outer wall is a smooth surface, and the threaded portion, the cylindrical pin portion, the conical connecting portion and the tightening portion are coaxially arranged.

[0007] Preferably, the diameter of the cylindrical pin portion is greater than the diameter of the threaded portion, and the ratio of the length of the cylindrical pin portion to the length of the threaded portion is greater than or equal to one to three and less than or equal to two to three.

[0008] Preferably, a chamfer is provided at the connection between the cylindrical pin portion and the threaded portion, and the angle of the chamfer is less than forty-five degrees.

[0009] Preferably, the tapered connecting portion is an inverted cone, and the tapered angle of the tapered connecting portion ranges from ninety to one hundred.

[0010] Preferably, a connecting column is fixedly provided on the upper end surface of the tightening portion, and a pin is provided on the connecting column.

[0011] Preferably, the connecting column is connected to the handle via a pin, and the outer surface of the handle forms a cam.

[0012] Preferably, a base and a connected member are provided on the outer side of the screw body, and the base and the connected member are connected through the screw body.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model sets the diameter of the cylindrical pin portion larger than the diameter of the threaded portion, so that after the threaded portion is threadedly connected to the base, the cylindrical pin portion and the corresponding cylindrical pin hole can constrain and limit each other, greatly reducing the matching clearance between the threaded portion and the base, and then the self-centering and compression effect of the screw is achieved through the tapered connecting portion. The ratio range of the length of the cylindrical pin portion to the length of the threaded portion is greater than or equal to one to three and less than or equal to two to three. If the ratio of the length of the cylindrical pin portion to the length of the threaded portion is less than the above-mentioned one to three, the cylindrical pin portion and the threaded portion cannot be effectively matched and connected, and the requirement of high-precision matching cannot be met. If the ratio of the length of the cylindrical pin portion to the length of the threaded portion is greater than the above-mentioned two to three, the ratio of the length of the cylindrical pin portion to the length of the threaded portion is too large, resulting in an excessively long matching length of the cylindrical pin portion, leading to The insertion resistance of the screw is too large, and the length of the threaded part is too short, resulting in insufficient pre-tightening force and reducing the fixing effect. The handle is set, easy to use, and can be directly installed without tools. It can be conveniently used on holes in various hard materials. The applicable hole diameter range is large, and the applicable hole types are also many. It is used in places with small spaces or where frequent disassembly is required. It can greatly improve the disassembly and assembly speed, and eliminate the trouble of lack of tools, making installation faster and more convenient, and no leakage is added during working. If ordinary locking screws are used in places with small spaces, one is that it is inconvenient to insert a wrench, and the other is that the time to fix the screws is relatively long. The manual tightening time of ordinary screws is about one and a half minutes, and the time to lock and fix with this device only takes ten seconds, which greatly improves the efficiency of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the screw body of the utility model;

[0018] Figure 4 This is a schematic diagram of the disassembled structure of the screw body of the utility model.

[0019] In the figure: 1. screw body; 2. cylindrical pin portion; 3. tapered connecting portion; 4. tightening portion; 5. handle; 6. connecting column; 7. pin; 8. base; 9. connected part; 10. threaded portion. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example 1

[0022] See also Figure 2 The figure shows a quick disassembly and assembly positioning screw, including a screw body 1, which includes a threaded portion 10, a cylindrical pin portion 2, a tapered connecting portion 3, a tightening portion 4 and a connecting column 6 in sequence. The threaded portion 10 is a cylinder with a thread on the outer wall; the cylindrical pin portion 2 is a cylinder with a smooth outer wall, and the threaded portion 10, the cylindrical pin portion 2, the tapered connecting portion 3 and the tightening portion 4 are coaxially arranged.

[0023] See also Figure 2 In the figure, the diameter of the cylindrical pin portion 2 is greater than the diameter of the threaded portion 10, and the ratio of the length of the cylindrical pin portion 2 to the length of the threaded portion 10 is greater than or equal to one to three and less than or equal to two to three.

[0024] In this embodiment: the diameter of the cylindrical pin portion 2 is set larger than the diameter of the threaded portion 10, so that after the threaded portion 10 is threadedly connected to the base 8, the cylindrical pin portion 2 and the corresponding cylindrical pin hole can constrain and limit each other, greatly reducing the fitting clearance between the threaded portion 10 and the base 8, and then the self-centering and tightening effect of the screw is achieved through the tapered connecting portion 3, and the ratio range of the length of the cylindrical pin portion 2 to the length of the threaded portion 10 is greater than or equal to one to three and less than or equal to two to three. If the ratio of the length of the cylindrical pin portion 2 to the length of the threaded portion 10 is less than the above-mentioned one to three, the cylindrical pin portion 2 and the threaded portion 10 cannot be effectively matched and connected, and the requirement of high-precision matching cannot be met. If the ratio of the length of the cylindrical pin portion 2 to the length of the threaded portion 10 is greater than the above-mentioned two to three, the ratio of the length of the cylindrical pin portion 2 to the length of the threaded portion 10 is too large, resulting in the cylindrical pin portion 2 The matching length is too long, resulting in too large a screw insertion resistance, and at the same time, the length of the threaded portion 10 is too short, resulting in insufficient preload force, reducing the fixing effect.

[0025] Working principle: First, push the screw body 1 into the holes where the base 8 and the connected part 9 need to be installed, and turn the handle 5 to fix the screw body 1 to the base 8 and the connected part 9. The diameter of the cylindrical pin part 2 is set larger than the diameter of the threaded part 10, so that after the threaded part 10 is threadedly connected with the base 8, the cylindrical pin part 2 and the corresponding cylindrical pin hole can constrain each other and greatly reduce the matching clearance between the threaded part 10 and the base 8. Then, the tapered connecting part 3 is used to make the screw self-centering and tightening. The ratio range of the length of the cylindrical pin part 2 to the length of the threaded part 10 is greater than or equal to one to three and less than or equal to one to three. If the ratio of the length of the cylindrical pin portion 2 to the length of the threaded portion 10 is less than the above-mentioned 1:3, the cylindrical pin portion 2 and the threaded portion 10 cannot be effectively matched and connected, and the requirement of high-precision matching cannot be achieved. If the ratio of the length of the cylindrical pin portion 2 to the length of the threaded portion 10 is greater than the above-mentioned 2:3, the ratio of the length of the cylindrical pin portion 2 to the length of the threaded portion 10 is too large, resulting in the cylindrical pin portion 2 being too long in matching length, resulting in too much resistance to screw insertion, and at the same time, the length of the threaded portion 10 is too short, resulting in insufficient pre-tightening force, reducing the fixing effect. Since the diameter of the cylindrical pin portion 2 is slightly larger than the diameter of the threaded portion 10, the cylindrical pin portion 2 and the threaded portion 10 are not connected effectively. The connection part of the threaded portion 10 is provided with a chamfer, and the angle of the chamfer is less than forty-five degrees, which is the angle between the chamfered surface and the ground. When the threaded portion 10 is drilled into the base 8, it can play a guiding role, which is convenient for installation. The diameter of its lower bottom surface is equal to the diameter of the cylindrical pin portion 2, and the diameter of its upper bottom surface is larger than the diameter of the lower bottom surface. The cone angle of the tapered connecting portion 3 ranges from ninety to one hundred degrees. This angle is the angle between the outer wall of the tapered connecting portion 3 and the ground. By arranging a connecting column 6 on the upper end surface of the tightening portion 4, and arranging a pin 7 on the connecting column 6, the handle 5 can be installed. The arrangement of the handle 5 is convenient to use and can be directly installed without tools. It can be directly installed and can be conveniently used on holes of various hard materials. It is applicable to a wide range of hole diameters and many types of holes. It is used in places with small spaces or where frequent disassembly is required. It can greatly increase the speed of disassembly and assembly, and eliminate the trouble of lack of tools, making installation faster and more convenient, and will not increase the leakage part during working. If ordinary locking screws are used in places with small spaces, one is that it is inconvenient to insert a wrench, and the other is that it takes a long time to fix the screws. The manual tightening time of ordinary screws is about one and a half minutes, and the time to lock and fix with this device only takes ten seconds, which greatly improves the efficiency of installation.

[0026] Example 2

[0027] See also Figure 3 This embodiment further illustrates Example 1. In the figure, a chamfer is provided at the connection between the cylindrical pin portion 2 and the threaded portion 10, and the angle of the chamfer is less than forty-five degrees.

[0028] In this embodiment: since the diameter of the cylindrical pin portion 2 is slightly larger than the diameter of the threaded portion 10, a chamfer is provided at the connection between the cylindrical pin portion 2 and the threaded portion 10. The angle of the chamfer is less than forty-five degrees, which is the angle between the chamfered surface and the ground. It can play a guiding role when the threaded portion 10 is drilled into the base 8, facilitating installation.

[0029] See also Figure 3 In the figure, the conical connecting portion 3 is an inverted cone, and the cone angle of the conical connecting portion 3 ranges from ninety to one hundred.

[0030] In this embodiment: the diameter of its lower bottom surface is equal to the diameter of the cylindrical pin part 2, the diameter of its upper bottom surface is larger than the diameter of the lower bottom surface, and the cone angle of the conical connecting part 3 ranges from ninety to one hundred degrees. This angle is between the outer wall of the conical connecting part 3 and the ground.

[0031] See also Figure 4 In the figure, a connecting column 6 is fixedly provided on the upper end surface of the tightening part 4, and a pin 7 is provided on the connecting column 6.

[0032] In this embodiment, the handle 5 can be installed by arranging a connecting column 6 on the upper end surface of the tightening portion 4 and arranging a pin 7 on the connecting column 6 .

[0033] See also Figure 4 In the figure, the connecting column 6 is connected to the handle 5 through a pin 7, and the outer surface of the handle 5 constitutes a cam.

[0034] In this embodiment: the setting of the handle 5 is easy to use and can be directly installed without tools. It can be conveniently used on holes of various hard materials. The applicable hole diameter range is large and the applicable hole types are also numerous. It is used in places with small spaces or where frequent disassembly is required. It can greatly improve the speed of disassembly and assembly, and eliminate the trouble of lack of tools, making installation faster and more convenient, and no leakage is added during working. If ordinary locking screws are used in places with small spaces, one is that it is inconvenient to insert a wrench, and the other is that it takes a long time to fix the screws. The manual tightening time of ordinary screws is about one and a half minutes, while the time for locking and fixing with the present device only takes ten seconds, which greatly improves the efficiency of installation.

[0035] See also Figure 1 In the figure, a base 8 and a connected member 9 are arranged on the outside of the screw body 1, and the base 8 and the connected member 9 are connected through the screw body 1.

[0036] In this embodiment, the screw body 1 is pushed into the holes where the base 8 and the connected member 9 need to be installed, and the handle 5 is turned to fix the screw body 1 to the base 8 and the connected member 9.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include"-"comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process-method-article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process-method-article or device.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quick disassembly and assembly positioning screw, comprising a screw body (1), characterized in that: The screw body (1) comprises a threaded portion (10), a cylindrical pin portion (2), a tapered connecting portion (3), a tightening portion (4) and a connecting column (6) in sequence; the threaded portion (10) is a cylinder with a thread on its outer wall; the cylindrical pin portion (2) is a cylinder with a smooth outer wall; the threaded portion (10), the cylindrical pin portion (2), the tapered connecting portion (3) and the tightening portion (4) are coaxially arranged.

2. The quick disassembly and assembly positioning screw according to claim 1, characterized in that: The diameter of the cylindrical pin portion (2) is greater than the diameter of the threaded portion (10).

3. The quick disassembly and assembly positioning screw according to claim 1, characterized in that: A chamfer is provided at the connection between the cylindrical pin portion (2) and the threaded portion (10), and the angle of the chamfer is less than forty-five degrees.

4. The quick disassembly and assembly positioning screw according to claim 3, characterized in that: The conical connecting portion (3) is in the shape of an inverted cone, and the cone angle of the conical connecting portion (3) ranges from ninety to one hundred.

5. The quick disassembly and assembly positioning screw according to claim 4, characterized in that: A connecting column (6) is fixedly provided on the upper end surface of the tightening portion (4), and a pin (7) is provided on the connecting column (6).

6. The quick disassembly and assembly positioning screw according to claim 5, characterized in that: The connecting column (6) is connected to the handle 5 via a pin (7), and the outer surface of the handle (5) forms a cam.

7. The quick disassembly and assembly positioning screw according to claim 6, characterized in that: A base (8) and a connected member (9) are arranged on the outside of the screw body (1); the base (8) and the connected member (9) are connected via the screw body (1).