Combined expansion screw
Through the block and spring structure of the combined expansion screw, the cone cap and hook are easily replaced, which solves the problem that existing expansion screws need to be replaced as a whole, and achieves resource conservation and efficient adaptability.
Patent Information
- Application Number
- CN202421860100.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-08-02
AI Technical Summary
The bolts of the existing expansion screws are fixed in one piece with the cone cap, which requires overall replacement when damaged, resulting in waste of resources and additional costs.
A combined expansion screw is designed to facilitate replacement of the cone cap and hook through the removable clamp and spring structure, and fix or replace the cone cap and hook through the pressing linkage of the push plate and hook respectively.
Only the damaged part of the cone cap or hook is replaced, reducing the overall replacement requirement, saving costs, improving the convenience and versatility of the device, and adapting to the use needs of different environments.
Smart Images
Figure CN223177914U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of fastening parts, in particular to a combined expansion bolt. Background Art
[0002] An expansion bolt is a screw used to fix an object. It provides a firm fixing effect by generating an expansion force during installation. The expansion bolt is suitable for various materials and installation environments, such as concrete, brick walls, wood, etc. It has the advantages of simple installation, reliable fixing, strong bearing capacity, etc., and is widely used in the fields of construction, machinery, electricity, etc. It is generally used for fastening guardrails, awnings, air conditioners, etc. on materials such as cement and bricks. However, its fixing is not very reliable. If the load has a large vibration, it may become loose. Therefore, it is not recommended for installing ceiling fans.
[0003] The existing expansion bolt usually consists of parts such as a screw rod, an expansion tube, and a nut. The expansion bolt is inserted into a pre-drilled hole, and then the nut is tightened to make the expansion tube expand in the hole, so as to be tightly combined with the hole wall to achieve the purpose of fixing an object.
[0004] However, for the existing expansion bolt, its bolt and cone cap are integrally fixed, which means that if any one of these parts is damaged or the specification is not applicable, the whole needs to be replaced. This situation may bring some inconveniences and cost increases. Because even if only one of the bolt or cone cap has a problem, the whole expansion bolt needs to be replaced, and the damaged part cannot be replaced separately. This will lead to waste of resources and additional cost expenditures. For this reason, a combined expansion bolt is proposed to solve the above problems. Content of the Utility Model
[0005] In order to make up for the above deficiencies, the utility model provides a combined expansion bolt, aiming to improve the problem that the bolt and cone cap in the prior art are integrally fixed and cannot be conveniently replaced.
[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0007] The top of the bolt is fixedly connected to the clamping column, the inside of the clamping column is provided with a toggle hole, the inside of the toggle hole is fixedly connected to the fixing plate, the outer wall of the fixing plate is slidably connected to the push plate, the bottom of the push plate is fixedly connected to a clamping block, the inside of the clamping block is provided with a limiting groove, the inside of the clamping block is fixedly connected to a sliding post, the outer wall of the sliding post is sleeved with a spring, one end of the spring is fixedly connected to the inside of the clamping column, and the other end of the spring is fixedly connected to the outer wall of the clamping block, the outer wall of the sliding post is fixedly connected to a limiting block, the outer wall of the limiting block is slidably connected to the inside of the limiting groove, the outer wall of the cone cap is provided with a clamping assembly, and the fixing assembly acts to clamp the cone cap;
[0008] As a further description of the above technical solution:
[0009] The clamping assembly includes a limiting plate and a limiting groove 1, wherein the outer wall of the limiting plate is fixedly connected to the outer wall of the cone cap, and the outer wall of the limiting groove 1 is opened inside the expansion tube;
[0010] As a further description of the above technical solution:
[0011] The outer wall of the bolt is threadedly connected with a nut, the outer wall of the bolt is sleeved with a gasket, and a warping gap is opened inside the expansion tube;
[0012] As a further description of the above technical solution:
[0013] A slide rail 1 is provided inside the cone cap, a closing block is provided on the outer wall of the cone cap, a connecting column is fixedly connected to the outer wall of the closing block, and the outer wall of the connecting column is slidably connected to the inside of the slide rail 1;
[0014] As a further description of the above technical solution:
[0015] A second slide rail is provided inside the bolt, a second slide column is slidably connected inside the bolt, and a second limiting block is fixedly connected to one end of the second slide column;
[0016] As a further description of the above technical solution:
[0017] The outer wall of the second sliding column is provided with a second spring, one end of the second spring is fixedly connected to the second clamping block, and the outer wall of the second spring is fixedly connected to the inside of the bolt;
[0018] As a further description of the above technical solution:
[0019] The outer wall of the second clamping block is fixedly connected to a slider, the outer wall of the slider is slidably connected to the inside of the second slide rail, and the inside of the bolt is slidably connected to a fixing column;
[0020] As a further description of the above technical solution:
[0021] The outer wall of the fixed column is fixedly connected to a fixed cone block, the outer wall of the fixed column is slidably connected to a sliding cone block, one end of the fixed column is fixedly connected to a hook, and the outer wall of the hook is slidably connected to the inside of the bolt.
[0022] The utility model has the following beneficial effects:
[0023] 1. In the utility model, the clamping block realizes its moving function by pressing the push plate. When the push plate is pressed, the sliding column, spring, clamping column and other structures will be linked together to realize the fixation or replacement of the cone cap. Only the damaged cone cap part needs to be replaced, and there is no need to replace the expansion screw as a whole, which solves the problem of needing to replace the entire cone cap due to damage and saves costs.
[0024] 2. In the present invention, the fixed cone block realizes its replacement function by pressing the hook. When the hook is pressed, the sliding column, spring, sliding cone block and other structures will be linked together to realize the replacement of different hooks, which can meet different usage requirements. The appropriate hook can be selected according to the actual situation, which solves the problem that the hook fixed on the top of the bolt cannot be easily replaced, and improves the convenience of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 This is a three-dimensional schematic diagram of a combined expansion screw proposed by the utility model;
[0026] Figure 2 This is a schematic diagram of the structure inside the cone cap of a combined expansion screw proposed by the present invention;
[0027] Figure 3 This is a structural diagram of a slide rail 1 of a combined expansion screw proposed in the present invention;
[0028] Figure 4 The present invention provides a schematic diagram of the internal structure of a bolt of a combined expansion screw.
[0029] Legend:
[0030] 1. Cone cap; 2. Limiting plate; 3. Limiting groove 1; 4. Warping joint; 5. Expansion tube; 6. Gasket; 7. Hook; 8. Bolt; 9. Nut; 10. Clamping column; 11. Clamping block 1; 12. Fixed plate; 13. Push plate; 14. Toggle hole; 15. Closing block; 16. Sliding column 1; 17. Limiting groove 2; 18. Limiting block 1; 19. Spring 1; 20. Slide rail 1; 21. Connecting column; 22. Limiting block 2; 23. Sliding column 2; 24. Spring 2; 25. Fixed cone block; 26. Slide rail 2; 27. Slider; 28. Clamping block 2; 29. Sliding cone block; 30. Fixed column. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0032] Reference Figure 1 and Figure 2 The utility model provides an embodiment of a combined expansion screw, comprising a bolt 8, a cone cap 1 is provided on the outer wall of the bolt 8, an expansion tube 5 is sleeved on the outer wall of the bolt 8, a clamping column 10 is fixedly connected to the top of the bolt 8, a toggle hole 14 is opened inside the clamping column 10, a fixing plate 12 is fixedly connected to the inner wall of the toggle hole 14, a push plate 13 is slidably connected to the outer wall of the fixing plate 12, a bottom of the push plate 13 is fixedly connected to a clamping block 11, a limiting groove 2 17 is opened inside the clamping block 11, a sliding column 16 is fixedly connected to the inner wall of the clamping column 10, a spring 19 is sleeved on the outer wall of the sliding column 16, one end of the spring 19 is fixedly connected to the inner wall of the clamping column 10, and the other end of the spring 19 is fixedly connected to the outer wall of the clamping block 11, a limiting block 18 is fixedly connected to the outer wall of the limiting block 18, and a holding component is provided on the outer wall of the cone cap 1, which acts to hold the cone cap 1.
[0033] Specifically, by pressing the push plate 13, the block 11 is moved by the push plate 13, and then the spring 19 is compressed by the block 11, and the cone cap 1 can be taken out. Later, because the block 11 surface is an inclined surface, the cone cap 1 can be directly placed on the outer wall of the column 10, and the block 11 is pushed by the bottom of the cone cap 1 to compress the spring 19 to the position where the cone cap 1 is clamped. Then, the spring 19 rebounds to push the block 11 to its original position, and the cone cap 1 is fixed, so that the cone cap 1 can be conveniently taken out and replaced, which enhances the scalability and allows the selection of a suitable cone cap 1 according to different tasks or environments; improves the use efficiency, and can quickly replace the cone cap 1 to adapt to different work needs, reduces the downtime caused by damage to the cone cap 1, improves work efficiency, increases the user's choice, and meets the personalized needs of different users.
[0034] Reference Figure 1 The clamping assembly includes a limiting plate 2 and a limiting groove 3. The outer wall of the limiting plate 2 is fixedly connected to the outer wall of the cone cap 1, and the outer wall of the limiting groove 3 is opened inside the expansion tube 5.
[0035] Specifically, the limiting plate 2 and the first limiting groove 3 can prevent the conical cap 1 from rotating continuously when the nut 9 rotates, improving the stability of the expansion bolt, ensuring that the conical cap 1 will not rotate accidentally during use, enhancing the reliability of the expansion bolt, enabling the nut 9 to better play its fastening role, reducing installation problems that may be caused by the continuous rotation of the conical cap 1, and improving the installation efficiency; it helps to protect the conical cap 1 and avoid wear or damage caused by rotation.
[0036] Refer to Figure 1 , Figure 3 and Figure 4 , a nut 9 is threadedly connected to the outer wall of the bolt 8, a gasket 6 is sleeved on the outer wall of the bolt 8, a slotted seam 4 is formed inside the expansion tube 5, a first slide rail 20 is formed inside the conical cap 1, a closing block 15 is arranged on the outer wall of the conical cap 1, a connecting column 21 is fixedly connected to the outer wall of the closing block 15, and the outer wall of the connecting column 21 is slidably connected inside the first slide rail 20. A second slide rail 26 is formed inside the bolt 8, a second sliding column 23 is slidably connected inside the bolt 8, a second limiting block 22 is fixedly connected to one end of the second sliding column 23, a second spring 24 is sleeved on the outer wall of the second sliding column 23, a second clamping block 28 is fixedly connected to one end of the second spring 24, the outer wall of the second spring 24 is fixedly connected inside the bolt 8, a slider 27 is fixedly connected to the outer wall of the second clamping block 28, and the outer wall of the slider 27 is slidably connected inside the second slide rail 26. A fixing column 30 is slidably connected inside the bolt 8, a fixed conical block 25 is fixedly connected to the outer wall of the fixing column 30, a sliding conical block 29 is slidably connected to the outer wall of the fixing column 30, a hook 7 is fixedly connected to one end of the fixing column 30, and the outer wall of the hook 7 is slidably connected inside the bolt 8.
[0037] Specifically, press the hook 7, drive the fixed conical block 25 to move through the hook 7. Since one side of the fixed conical block 25 is a slope and the contact surface with the second clamping block 28 is also a slope, it can slide directly, push the second clamping block 28 to move and compress the second spring 24 at the same time. After reaching the appropriate position, drive the second clamping block 28 to return to its original position through the rebound of the second spring 24, and the hook 7 can be fixed. Then continue to press the hook 7, drive the sliding conical block 29 to move through the hook 7. Similarly, it can directly move to the top of the second clamping block 28 through the slope of the second clamping block 28. Then pull the hook 7, move the sliding conical block 29 to the outer wall of the fixed conical block 25 through the flat surface of the second clamping block 28, and remove the hook 7 through the slope of the sliding conical block 29, so as to directly replace the hook 7, enhancing the versatility of the expansion bolt, enabling it to play a role in different environments, improving the working efficiency, adapting to different tasks without replacing the whole expansion bolt, increasing the service life of the expansion bolt. By replacing the hook 7, its overall service life can be extended, which helps to reduce inventory. Only different hooks 7 need to be stocked instead of a large number of expansion bolts, facilitating maintenance and repair. Just replace the damaged hook 7 to restore the function of the expansion bolt.
[0038] Working principle: First, slide the closing block 15. Drive the fixedly connected connecting column 21 to move inside the slidably connected first slide rail 20 through the closing block 15. Then rotate the closing block 15, and drive the fixedly connected connecting column 21 to slide inside the first slide rail 20 to which it is slidably connected, and it can be removed. Then press the push plate 13 to slide on the outer wall of the fixedly connected fixing plate 12. Then drive the fixedly connected first clamping block 11 to move through the push plate 13. Subsequently, drive the fixedly connected first spring 19 to be compressed through the first clamping block 11. At the same time, the limiting block 18 fixedly connected to the outer wall of the first sliding column 16 fixedly connected inside the clamping column 10 slides inside the second limiting groove 17 to which it is slidably connected, so as to remove the old conical cap 1. Then, the conical cap 1 can be directly slid onto the outer wall of the clamping column 10 through the inclined surface at the top of the first clamping block 11. When the conical cap 1 slides, it compresses the first clamping block 11, and rebounds at the clamping position for fixation. Align the limiting plate 2 with the first limiting groove 3 and slide it in to prevent the thread from rotating. Then rotate the nut 9, drive the bolt 8 connected by thread to move through the nut 9. Then drive the conical cap 1 to move through the bolt 8, so as to be fixed by tilting through the gap 4. Then push the hook 7, drive the fixedly connected fixed column 30 to move through the hook 7. Then drive the fixedly connected fixed conical block 25 to move through the fixed column 30. Then drive the second clamping block 28 to move through the inclined surface of the fixed conical block 25. Subsequently, drive the fixedly connected slider 27 to slide inside the second slide rail 26 to which it is slidably connected through the second clamping block 28. At the same time, compress the fixedly connected second spring 24 through the second clamping block 28. When the fixed conical block 25 moves to the top of the second clamping block 28, drive the fixedly connected second clamping block 28 to return to its original position through the rebound of the second spring 24 for fixation. Then continue to press the hook 7, drive the sliding conical block 29 to move through the hook 7. The inclined surface of the second clamping block 28 makes the sliding conical block 29 continue to move, and at the same time compresses the second spring 24. When it reaches the top of the second clamping block 28, it rebounds back to its original position through the second spring 24. Then pull the hook 7, so that the sliding conical block 29 slides on the outer wall of the fixed column 30 to which it is slidably connected to the outer wall of the fixed conical block 25. Then push the second clamping block 28 through the inclined surface of the sliding conical block 29, so that the hook 7 can be removed and replaced.
[0039] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A combined expansion screw, comprising a bolt (8), characterized in that: The outer wall of the bolt (8) is provided with a cone cap (1), the outer wall of the bolt (8) is sleeved with an expansion tube (5), the top of the bolt (8) is fixedly connected with a clamping column (10), a shifting hole (14) is provided inside the clamping column (10), a fixed plate (12) is fixedly connected inside the shifting hole (14), the outer wall of the fixed plate (12) is slidably connected with a push plate (13), the bottom of the push plate (13) is fixedly connected with a clamping block (11), a limiting groove (17) is provided inside the clamping block (11), and the inside of the clamping column (10) is provided with a limiting groove (17). A sliding column (16) is fixedly connected, and a spring (19) is sleeved on the outer wall of the sliding column (16). One end of the spring (19) is fixedly connected to the inside of the clamping column (10), and the other end of the spring (19) is fixedly connected to the outer wall of the clamping block (11). The outer wall of the sliding column (16) is fixedly connected to a limiting block (18), and the outer wall of the limiting block (18) is slidably connected to the inside of the limiting groove (17). A holding component is provided on the outer wall of the cone cap (1), and the fixing component acts to hold the cone cap (1).
2. The combined expansion screw according to claim 1, wherein: The clamping assembly comprises a limiting plate (2) and a limiting groove (3), wherein the outer wall of the limiting plate (2) is fixedly connected to the outer wall of the cone cap (1), and the outer wall of the limiting groove (3) is opened inside the expansion tube (5).
3. The combined expansion screw according to claim 1, characterized in that: The outer wall of the bolt (8) is threadedly connected with a nut (9), the outer wall of the bolt (8) is sleeved with a gasket (6), and a warping gap (4) is opened inside the expansion tube (5).
4. The combined expansion screw according to claim 3, characterized in that: A slide rail (20) is provided inside the cone cap (1), a closing block (15) is provided on the outer wall of the cone cap (1), a connecting column (21) is fixedly connected to the outer wall of the closing block (15), and the outer wall of the connecting column (21) is slidably connected to the inside of the slide rail (20).
5. The combined expansion screw according to claim 1, wherein: A second slide rail (26) is provided inside the bolt (8), a second slide column (23) is slidably connected inside the bolt (8), and one end of the second slide column (23) is fixedly connected to a second limiting block (22).
6. The combined expansion screw according to claim 5, wherein: The outer wall of the second sliding column (23) is provided with a second spring (24), one end of the second spring (24) is fixedly connected with a second clamping block (28), and the outer wall of the second spring (24) is fixedly connected to the inside of the bolt (8).
7. The combined expansion screw according to claim 6, wherein: The outer wall of the second clamping block (28) is fixedly connected with a slider (27), the outer wall of the slider (27) is slidably connected to the inside of the second slide rail (26), and the inside of the bolt (8) is slidably connected with a fixing column (30).
8. The combined expansion screw according to claim 7, characterized in that: The outer wall of the fixed column (30) is fixedly connected to a fixed cone block (25), the outer wall of the fixed column (30) is slidably connected to a sliding cone block (29), one end of the fixed column (30) is fixedly connected to a hook (7), and the outer wall of the hook (7) is slidably connected to the inside of the bolt (8).