Screw rod capable of being disassembled and assembled without tool
By designing a tool-free disassembly and assembly screw and utilizing the hinged structure of the locking screw and control rod, the problem of difficult operation of traditional screws in narrow spaces is solved, achieving efficient and safe disassembly and assembly operations.
Patent Information
- Application Number
- CN202520170906.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-25
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-01-25
AI Technical Summary
Traditional screws are difficult to operate in confined spaces, requiring tools and potentially damaging the machine or causing installation difficulties.
Design a tool-free disassembly screw, including a locking screw and a control rod, which are connected by a hinge shaft. The control rod is rotated to drive the locking screw to rotate and lock or loosen, eliminating the need for tools.
It enables efficient assembly and disassembly without tools in confined spaces, improving operational safety and convenience. It is suitable for various installation environments, with high connection strength and high assembly and disassembly efficiency.
Smart Images

Figure CN223621978U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a screw assembly / disassembly structure, specifically a tool-free screw assembly / disassembly structure. Background Technology
[0002] A screw is a cylinder with helical grooves cut on its outer surface, or a cone with conical helical grooves cut on its outer surface. Screws are commonly used in modern automated machining equipment. They utilize a drive hexagonal groove at the top to rotate and lock the helical part, resulting in a simple structure and convenient operation, leading to their widespread use. Traditional screws typically require specialized tools such as screwdrivers or wrenches for installation or removal. While the locking method is simple, when the screw is installed in a confined space, tool operation becomes limited by space constraints, causing difficulties and potentially preventing the tools from being used, thus damaging the mounting parts or working surfaces of the machine. Therefore, further improvements are necessary. Utility Model Content
[0003] The purpose of this utility model is to overcome the shortcomings of existing technologies and provide a tool-free screw assembly / disassembly method that is simple in structure, low in manufacturing cost, requires no tools, is efficient and convenient to assemble and disassemble, and is highly safe.
[0004] The purpose of this utility model is achieved in the following way: a tool-free disassembly and assembly screw, which includes a locking screw, a locking seat is provided on the top of the locking screw, and a drive groove is provided on the body of the locking seat;
[0005] It also includes a control lever with a bottom extending downward to form an insert plate. The insert plate extends into and is locked in the drive groove and connected to the locking seat. Rotating the control lever causes the locking screw to rotate and lock.
[0006] The control lever is hinged to the drive slot via a hinge shaft.
[0007] The drive slot is open at both ends, and the insert card is placed in the open.
[0008] The insert plate and the locking seat are provided with hinge holes, and the hinge shaft passes through the locking seat and is hinged to the insert plate.
[0009] The locking seat and locking screw are integrally formed from metal materials.
[0010] The outer cylindrical surface of the control rod is provided with anti-slip teeth.
[0011] The beneficial effects of this utility model are: 1. Simple structure, low manufacturing cost, and improved market competitiveness. 2. Tool-free assembly and disassembly of the screw, which can be easily completed by the user without the aid of tools, simplifies the assembly and disassembly process, avoids the tediousness and inconvenience of installation in narrow spaces, and reduces the difficulty of assembly and disassembly. 3. Convenient assembly and disassembly of the screw, high efficiency, applicable to various installation environments, high safety, and convenient and quick operation. 4. High connection strength between the control rod and the screw, stable and firm connection, ensuring the normal operation of the screw. Attached Figure Description
[0012] Figure 1 This is a diagram illustrating the installation and use of this utility model with a range hood adjustment base.
[0013] Figure 2 This is a schematic diagram showing the installation state of the locking screw in this utility model.
[0014] Figure 3 This is a schematic diagram of the working state of the locking screw in this utility model.
[0015] Figure 4 This is a schematic diagram showing the installation state of the locking screw and control rod in this utility model.
[0016] Figure 5 This is a structural assembly drawing of the locking screw and control rod in this utility model. Detailed Implementation
[0017] The present invention will be further described in detail below with reference to the accompanying drawings. A tool-free disassembly screw includes a locking screw 1, a locking seat 2 provided on the top of the locking screw 1, and a drive groove 21 provided on the body of the locking seat 2;
[0018] It also includes a control lever 3, with a bottom of the control lever 3 extending downward to form an insert plate 4. The insert plate 4 extends into and is locked in the drive groove 21 and connected to the locking seat 2. Rotating the control lever 3 drives the locking screw 1 to rotate and lock.
[0019] The control lever 3 is hinged to the drive slot 21 via a hinge shaft.
[0020] The drive slot 21 is open at both ends, and the insert plate 4 is placed in the open.
[0021] The insert plate 4 and the locking seat 2 are provided with a hinge hole 5, and the hinge shaft passes through the locking seat 2 and is hinged to the insert plate 4.
[0022] The locking seat 2 and locking screw 1 are integrally formed from metal materials.
[0023] The outer cylindrical surface of the control rod 3 is provided with anti-slip teeth 31.
[0024] Working Principle: In this case, taking the application of the screw to the adjustment seat of a range hood as an example, since the range hood height adjustment seat is located inside the range hood, after the range hood and guide rail are installed, the adjustment screw needs to be used to drive the clamps on both sides to swing, in order to adjust the gap between the range hood panel and the bottom of the cabinet. This requires rotating the adjustment screw after the range hood is installed to make the clamps swing, thereby reducing the gap between the range hood and the cabinet. Due to the small internal space of the range hood, the traditional method of using tools to drive the screw is very cumbersome and inconvenient, and may even require special tools for adjustment, causing inconvenience to users. Therefore, in this case, a locking seat is provided at the top of the locking screw, and a drive groove is provided through the locking seat body. Corresponding to the drive groove, a control rod is also provided. The bottom of the control rod extends downward to form an insert plate, which is hinged to the drive groove, connecting the control rod and the locking screw into one unit.
[0025] When installation and locking are required, the control lever is rotated to a specific angle, such as swinging it downwards until it is engaged in the open portion of the drive slot. At this point, the control lever rotates around the locking screw as its axis. The insert plate drives the hinge shaft and locking seat to rotate together, which in turn drives the locking screw to rotate, thus achieving the locking purpose. Because the insert plate is engaged and locked within the drive slot, the connection between the locking screw and the control lever is tight and secure, with high connection strength, ensuring the normal operation of the locking process.
[0026] When disassembly is required, the user only needs to rotate the control lever in the opposite direction, which will simultaneously cause the locking screw to rotate in the opposite direction. The locking screw will then loosen, and the user can easily disassemble it.
[0027] Furthermore, the insert can be oriented in the same direction as the drive slot or perpendicular to it. Users can choose the appropriate installation method according to the actual operating environment, making it suitable for various types of installation environments.
[0028] Throughout the entire process of disassembling and assembling the screw, the user does not need to use tools such as screwdrivers or wrenches. The entire disassembly and assembly process can be completed simply by rotating the control lever. This not only saves on the carrying and use of tools, but also avoids potential safety hazards caused by improper operation. The disassembly and assembly process is characterized by low intensity and high efficiency, making it suitable for applications requiring frequent disassembly and assembly. It can also be performed quickly in narrow work spaces, improving the safety of disassembly and assembly operations.
[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A tool-free disassembly and assembly screw, characterized in that: It includes a locking screw (1), a locking seat (2) is provided on the top of the locking screw (1), and a drive groove (21) is provided on the body of the locking seat (2). It also includes a control lever (3), the bottom of which extends downward to form a plate (4). The plate (4) extends into and is locked in the drive groove (21) and connected to the locking seat (2). Rotating the control lever (3) drives the locking screw (1) to rotate and lock. The control rod (3) is hinged to the drive groove (21) via a hinge shaft.
2. The tool-free disassembly and assembly screw according to claim 1, characterized in that: The drive slot (21) is open at both ends, and the insert plate (4) is placed in the open.
3. The tool-free assembly / disassembly screw according to claim 1, characterized in that: The insert plate (4) and the locking seat (2) are provided with a hinge hole (5), and the hinge shaft passes through the locking seat (2) and hinges to the insert plate (4).
4. The tool-free assembly / disassembly screw according to claim 1, characterized in that: The locking seat (2) and locking screw (1) are integrally formed from metal materials.
5. The tool-free disassembly and assembly screw according to claim 1, characterized in that: The outer cylindrical surface of the control rod (3) is provided with anti-slip teeth (31).