Ratchet wheel anti-loose locking screw
Through the design of ratchet anti-loose locking screws, the ratchet and hexagonal through-hole structures, combined with compression springs and flat washer, the problem of equipment loosening in complex vibration environments is solved, and the equipment is stable locking and loosening control is achieved, with significant effect and low cost.
Patent Information
- Application Number
- CN202421913825.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-08
AI Technical Summary
The prior art is difficult to effectively prevent the loosening of radio equipment when fixed on the rack in complex vibration environments, especially in scenarios such as aircraft, ships, and armored vehicles.
The ratchet anti-loosening locking screws are adopted, including a single-head screw, a ratchet handle nut and a ratchet locking washer. Through the design of ratchet and hexagonal through-holes, combined with compression spring and flat washer, the equipment is securely locked and loosened.
It realizes the reliable anti-loosening effect of the equipment in complex vibration environments, and is simple in design, low-cost, easy to operate, and is suitable for a variety of installation environments.
Smart Images
Figure CN223019173U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of anti-loosening screws, in particular to a ratchet anti-loosening locking screw. Background Art
[0002] In the current prior art, when fixing devices such as radios on a rack, it is common to use wing nuts in combination with spring washers or conical washers to lock the devices. A wrench tool is required to provide a large torque to assist in installation or disassembly. Even so, in relatively complex vibration environments and conditions, such as in airplanes, ships, armored vehicles, or durability tests, there is still a possibility of loosening. Summary of the Utility Model
[0003] The technical solution adopted by the utility model to solve the above technical problems is as follows:
[0004] A ratchet anti-loosening locking screw, comprising a single-headed screw, a ratchet handle nut, and a ratchet locking washer. The single-headed screw has an external thread section and a hexagonal outer edge section. There is a circular flange at the boundary between the external thread section and the hexagonal outer edge section. A threaded hole is provided at the end of the hexagonal outer edge section.
[0005] The inside of the ratchet handle nut has a structure of a U-shaped cavity with a single-layer partition. The outer surface edge of the single-layer partition has ratchet teeth. A hexagonal through-hole is provided in the middle of the single-layer partition. The hexagonal outer edge section of the single-headed screw passes through the through-hole and extends into the U-shaped cavity of the ratchet handle nut until the flange on the single-headed screw abuts against the outer surface of the single-layer partition of the ratchet handle nut. A compression spring and a flat washer are also provided in the U-shaped cavity. The compression spring is sleeved on the hexagonal outer edge section of the single-headed screw. The outer peripheral edge of the flat washer closely adheres to the inner wall of the open end of the U-shaped cavity of the ratchet handle nut. A tapered small hole is provided in the middle position of the flat washer. A cross-slot countersunk head screw passes through the tapered small hole and is screwed into the threaded hole at the end of the hexagonal outer edge section of the single-headed screw.
[0006] The edge of the ratchet locking washer has ratchet teeth, and a hole for the external thread section of the single-headed screw to pass through is provided in the middle. The ratchet locking washer is sleeved on the external thread section of the single-headed screw through this hole until it abuts against the outer surface of the single-layer partition of the ratchet handle nut, and the ratchet teeth at the mating part are engaged with each other.
[0007] Further, the ratchet anti-loosening locking screw is made of stainless steel material.
[0008] Further, the middle part of the external thread section of the single-headed screw is cylindrical.
[0009] The beneficial effects of the present utility model are as follows: It has a reliable anti-loosening effect, and the split design of the single-headed screw and the ratchet handle nut enables easy loosening without tools. Its design principle is simple, the cost is low, the effect is excellent, the operation is convenient, and it is solid and durable. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 is an exploded structural schematic diagram of the present utility model;
[0011] Figure 2 is a side schematic diagram of the present utility model;
[0012] Figure 3 is a front schematic diagram of the present utility model.
[0013] As shown in the figure: 1. Single-headed screw; 2. Ratchet handle nut; 3. Ratchet locking washer; 4. Compression spring; 5. Flat washer; 6. Cross recessed countersunk head screw. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0014] The present utility model will be further described below with reference to the accompanying drawings and embodiments.
[0015] The ratchet anti-loosening locking screw is used to fix the radio equipment on the rack to achieve the stability of the equipment against vibration in various installation environments. The ratchet anti-loosening locking screw is made of high-strength and high-toughness materials, preferably stainless steel. Stainless steel has high strength, ductility and toughness, is suitable for extreme conditions and resistance to deformation, has excellent thermal properties, is suitable for high-temperature applications, has corrosion resistance, can withstand various corrosive environments, and has decorative properties, with a bright and smooth surface.
[0016] As Figure 1 , Figure 2 and Figure 3 shown, the ratchet anti-loosening locking screw includes a single-headed screw 1, a ratchet handle nut 2 and a ratchet locking washer 3. The single-headed screw 1 has an external thread section and a hexagonal outer edge section. There is a circular flange at the boundary between the two sections, and there is a threaded hole at the end of the hexagonal outer edge section.
[0017] The inside of the ratchet handle nut 2 has a structure of a U-shaped cavity with a single-layer partition. The edge of the outer surface of the single-layer partition has ratchet teeth, and a hexagonal through-hole is opened in the middle of the single-layer partition. The hexagonal outer edge section of the single-headed screw 1 passes through this through-hole and extends into the U-shaped cavity of the ratchet handle nut 2 until the flange on the single-headed screw 1 abuts against the outer surface of the single-layer partition of the ratchet handle nut 2, that is, the external thread section of the single-headed screw 1 cannot enter the U-shaped cavity. The design of the hexagonal through-hole makes the hexagonal outer edge section of the single-headed screw 1 not rotate relative to the ratchet handle nut 2 after extending into the U-shaped cavity, that is, the single-headed screw 1 and the ratchet handle nut 2 do not rotate relative to each other.
[0018] The U-shaped cavity also has a compression spring 4 and a flat washer 5. The compression spring 4 is sleeved on the hexagonal outer edge section of the single-headed screw 1. The outer peripheral edge of the flat washer 5 closely adheres to the inner wall of the opening end of the U-shaped cavity of the ratchet handle nut 2. A tapered small hole is opened in the middle position of the flat washer 5, and a cross-slot countersunk head screw 6 passes through the tapered small hole. The cross-slot countersunk head screw 6 is screwed into the threaded hole at the end of the hexagonal outer edge section of the single-headed screw 1. That is, the flat washer 5 is fixed to the threaded hole at the end of the hexagonal outer edge section by using the cross-slot countersunk head screw 6 and the threaded hole at the end of the hexagonal outer edge section, so that one end of the compression spring 4 abuts against the inner wall of the single-layer partition of the U-shaped cavity, and the other end abuts against the flat washer 5, thus realizing the elastic stretching of the single-headed screw 1 relative to the ratchet handle nut 2, and the single-headed screw 1 can be rotated by twisting the ratchet handle nut 2. When the single-headed screw 1 is pulled forcefully to separate from the ratchet handle nut 2, the compression spring 4 is compressed, and the single-headed screw 1 and the ratchet handle nut 2 can be separated by a certain distance.
[0019] The ratchet locking washer 3 is a washer with ratchet teeth at the edge, and a hole for the outer threaded section of the single-headed screw 1 to pass through is opened in the middle. The ratchet locking washer 3 is sleeved on the outer threaded section of the single-headed screw 1 through this hole until it abuts against the outer surface of the single-layer partition of the ratchet handle nut 2, and the tooth shapes at the mating part are engaged, that is, the ratchet teeth of the ratchet locking washer 3 are engaged with the ratchet teeth of the single-layer partition of the ratchet handle nut 2.
[0020] When tightening is required, rotate the ratchet handle nut 2 so that the ratchet teeth of the ratchet handle nut 2 slide along the direction of the ratchet teeth of the ratchet locking washer 3 and slide over its tooth back to achieve rotation. After reaching the tightened position, the ratchet teeth of the ratchet handle nut 2 and the ratchet teeth of the ratchet locking washer 3 are engaged and locked with each other. At this time, the ratchet handle nut 2 cannot be rotated in the reverse direction to achieve the loosening action, thus achieving the effect of anti-loosening and locking.
[0021] When loosening is required, pull the ratchet handle nut 2 outwards forcefully, and the pressure spring 4 is compressed by the force, causing the ratchet handle nut 2 and the outer threaded section of the single-headed screw 1 to separate by a certain distance. At this time, the ratchet handle nut 2 and the ratchet locking washer 3 are disengaged in tooth shape. Then rotate the ratchet handle nut 2 in the loosening direction, and the ratchet handle nut 2 drives the single-headed screw 1 to rotate in the same direction to achieve the loosening action.
[0022] In order to enable the single-headed screw 1 and the ratchet handle nut 2 to perform relative rotational movement, the middle part of the hexagonal outer edge section of the single-headed screw 1 is designed to be cylindrical. When the ratchet handle nut 2 is pulled open, when the cylindrical part of the hexagonal outer edge section is located in the hexagonal through hole of the single-layer partition, the single-headed screw 1 can achieve relative rotational movement with the ratchet handle nut 2.
[0023] The present utility model is not limited to the above-mentioned optimal implementation manner. Any other products that are the same as or similar to the present utility model obtained by anyone under the inspiration of the present utility model shall fall within the protection scope of the present utility model.
Claims
1. A ratchet locking screw, comprising a single-head screw (1), a ratchet handle nut (2) and a ratchet locking washer (3), characterized in that: The single-start screw (1) comprises an external thread section and a hexagonal outer edge section, a circular flange is provided at the boundary between the external thread section and the hexagonal outer edge section, and a threaded hole is provided at the end of the hexagonal outer edge section; The ratchet handle nut (2) has a U-shaped cavity structure with a single-layer partition inside, the outer surface edge of the single-layer partition has ratchet teeth, and a hexagonal through hole is opened in the middle of the single-layer partition. The hexagonal outer edge section of the single-head screw (1) passes through the through hole and extends into the U-shaped cavity of the ratchet handle nut (2) until the flange on the single-head screw (1) abuts against the outer surface of the single-layer partition of the ratchet handle nut (2). The U-shaped cavity also has a compression spring (4) and a flat washer (5). The compression spring (4) is sleeved on the hexagonal outer edge section of the single-head screw (1), and the outer circumference of the flat washer (5) is tightly attached to the inner wall of the open end of the U-shaped cavity of the ratchet handle nut (2). A conical small hole is opened in the middle of the flat washer (5), and a cross-slot countersunk screw (6) passes through the conical small hole. The cross-slot countersunk screw (6) is screwed into the threaded hole at the end of the hexagonal outer edge section of the single-head screw (1); The ratchet locking washer (3) has ratchet teeth on its edge and a hole in the middle for the external thread section of the single-head screw (1) to pass through. The ratchet locking washer (3) is inserted into the external thread section of the single-head screw (1) through the hole until it abuts against the outer surface of the single-layer partition of the ratchet handle nut (2), and the ratchet teeth at the abutment between the two mesh with each other.
2. The ratchet locking screw according to claim 1, characterized in that: The ratchet anti-loosening locking screw is made of stainless steel material.
3. The ratchet locking screw according to claim 1 or 2, characterized in that: The middle portion of the external thread section of the single-start screw (1) is cylindrical.