Novel expansion screw
By adding a fixed clamping mechanism to the top of the expansion screw, and clamping the nail core between the pressing plate and the fixing plate, the problem of the expansion screw loose or fall off under the action of external force is solved, and higher locking force and safety are achieved.
Patent Information
- Application Number
- CN202422129732.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-31
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-31
AI Technical Summary
Existing expansion screws are prone to loosening or falling off when subjected to external forces, which affects the safety and stability of the fixed object.
A new type of expansion screw is designed, by adding a fixed clamping mechanism to the top of it, the nail core is clamped between the pressing plate and the fixing plate by rotating handles, thereby providing additional locking force and resisting external force.
Effectively prevent the expansion screw from loosening or falling off, improving the safety and stability of the fixed object.
Smart Images
Figure CN222910471U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of expansion screws, in particular to a novel expansion screw. Background Art
[0002] Expansion screws, also known as metal expansion screws, are a type of fastener that uses a wedge-shaped slope to promote expansion and generate friction and grip to achieve a fixing effect. It is mainly composed of a screw and an expansion tube. The tail of the screw is conical in shape, and the diameter of the inner edge of the cone is larger than that of the inner edge of the expansion tube.
[0003] When the device is used, the following defects still exist: the existing expansion screws usually rely only on the locking between the existing expansion screws and the contact surface, and when subjected to external forces, the expansion screws may become loose or even fall off, which will have a serious impact on the safety and stability of the fixed object. Utility Model Content
[0004] The utility model aims to solve the shortcomings in the prior art and provides a novel expansion screw.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a new type of expansion screw, including a base plate and an external thread, the top of the base plate is fixedly connected with a fixed seat and a fixed plate, the interior of the fixed seat is provided with a slide groove 1 and a slide groove 2, a connecting column is slidably connected in the slide groove 2, one end of the connecting column is fixedly connected with a fixed block, the other end of the connecting column is fixedly connected with a pressure plate, the fixed block slides in the slide groove 1, the outer wall of the connecting column is sleeved with a spring, the internal thread of the fixed seat is connected with a screw, one end of the screw is fixedly connected with a handle, and the other end of the screw abuts against the pressure plate.
[0006] As a further description of the above technical solution:
[0007] The pressure plate slides on top of the base plate.
[0008] As a further description of the above technical solution:
[0009] One end of the spring is fixedly connected to the fixing block, and the other end of the spring is fixedly connected to the inner wall of the first slide groove.
[0010] As a further description of the above technical solution:
[0011] The bottom plate is threadedly connected with the external thread.
[0012] As a further description of the above technical solution:
[0013] The top of the external thread is fixedly connected with a nail core.
[0014] As a further description of the above technical solution:
[0015] The outer wall of the external thread is threadedly connected with a nut gasket.
[0016] The utility model has the following beneficial effects:
[0017] In the utility model, by adding a fixing and clamping mechanism to the top of the expansion screw, the nail core is clamped between the pressure plate and the fixing plate by turning the handle, and the fixing and clamping mechanism added to the top can provide additional locking force between the expansion screw and the contact surface. This additional locking force can effectively resist external forces and prevent the expansion screw from loosening or falling off. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a first perspective view of a new expansion screw proposed by the utility model;
[0019] Figure 2 This is a second viewing angle diagram of a new expansion screw proposed by the utility model;
[0020] Figure 3 This is a partial structural diagram of a new expansion screw proposed by the utility model;
[0021] Figure 4 The utility model is a cross-sectional view of a novel expansion screw.
[0022] Legend:
[0023] 1. Fixed seat; 2. Pressing plate; 3. Fixed plate; 4. Bottom plate; 5. External thread; 6. Nail core; 7. Nut gasket; 8. Connecting column; 9. Spring; 10. Fixed block; 11. Screw; 12. Handle; 13. Slideway 1; 14. Slideway 2. DETAILED DESCRIPTION
[0024] 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 in 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.
[0025] Reference Figure 1-Figure 4The utility model provides an embodiment: a new expansion screw, including a base plate 4 and an external thread 5, the top of the base plate 4 is fixedly connected with a fixing seat 1 and a fixing plate 3, a slide groove 13 and a slide groove 2 14 are provided inside the fixing seat 1, a connecting column 8 is slidably connected in the slide groove 2 14, one end of the connecting column 8 is fixedly connected with a fixing block 10, the other end of the connecting column 8 is fixedly connected with a pressing plate 2, the fixing block 10 slides in the slide groove 13, the outer wall of the connecting column 8 is sleeved with a spring 9, the internal thread of the fixing seat 1 is connected with a screw rod 11, one end of the screw rod 11 is fixedly connected with a handle 12, and the other end of the screw rod 11 abuts against the pressing plate 2.
[0026] Among them, the pressure plate 2 slides on the top of the base plate 4, and the position of the pressure plate 2 can be easily adjusted to ensure the best fixing effect. One end of the spring 9 is fixedly connected to the fixing block 10, and the other end of the spring 9 is fixedly connected to the inner wall of the slide groove 13. The base plate 4 is threadedly connected to the external thread 5, and the top of the external thread 5 is fixedly connected with a nail core 6, and the outer wall of the external thread 5 is threadedly connected with a nut gasket 7.
[0027] Working principle: the staff moves the whole device to a suitable position so that the bottom plate 4 is fixed on the contact surface. The staff rotates the nail core 6, and the nail core 6 drives the external thread 5 to move in the bottom plate 4. The handle 12 is shaken, and the handle 12 drives the screw 11 to rotate, driving the screw 11 to push the pressure plate 2, and the connecting column 8 slides in the slide groove 14. The spring 9 is squeezed on the outer wall of the connecting column 8, and the connecting column 8 drives the pressure plate 2 to slide on the top surface of the bottom plate 4, so that the pressure plate 2 and the fixed plate 3 clamp the nail core 6.
[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A novel expansion screw, comprising a base plate (4) and an external thread (5), characterized in that: The top of the bottom plate (4) is fixedly connected with a fixed seat (1) and a fixed plate (3); a first slide groove (13) and a second slide groove (14) are provided inside the fixed seat (1); a connecting column (8) is slidably connected in the second slide groove (14); one end of the connecting column (8) is fixedly connected with a fixed block (10); the other end of the connecting column (8) is fixedly connected with a pressure plate (2); the fixed block (10) slides in the first slide groove (13); a spring (9) is sleeved on the outer wall of the connecting column (8); a screw rod (11) is threadedly connected to the inside of the fixed seat (1); one end of the screw rod (11) is fixedly connected with a handle (12); the other end of the screw rod (11) is in contact with the pressure plate (2).
2. A novel expansion screw according to claim 1, characterized in that: The pressing plate (2) slides on top of the bottom plate (4).
3. A novel expansion screw according to claim 1, characterized in that: One end of the spring (9) is fixedly connected to the fixed block (10), and the other end of the spring (9) is fixedly connected to the inner wall of the slide groove (13).
4. A novel expansion screw according to claim 1, characterized in that: The bottom plate (4) is threadedly connected to the external thread (5).
5. The novel expansion screw according to claim 1 is characterized in that: A nail core (6) is fixedly connected to the top of the external thread (5).
6. A novel expansion screw according to claim 5, characterized in that: The outer wall of the external thread (5) is threadedly connected with a nut washer (7).