Sectional type bolt fastening device with self-locking function

Abstract

The utility model discloses a sectional type bolt fastening device with a self-locking function, which is applied to the field of bolt fastening devices and comprises a bolt head, a connecting rod is integrally formed on the surface of the bolt head, and a screw is arranged at one end of the connecting rod. The clamping block is clamped with the ratchet wheel under the action of the spring, so that the ratchet wheel rotates unidirectionally, the nut rotates unidirectionally due to the unidirectional rotation of the ratchet wheel, after the nut is fastened in place, the clamping block is clamped with the ratchet wheel, and the nut is prevented from rotating reversely, so that the purpose of having a self-locking function can be achieved, the stability of the fastener is ensured, and the safety is improved; according to the utility model, the second bolt is loosened by using a tool, the insertion rod is pulled out from the insertion hole, then the connecting rod with the required length is inserted into the insertion rod, the second bolt is mounted and tightened, and the second bolt is fixed, so that the purpose of adjusting the length can be achieved, the use cost is reduced, and the practicability and the applicability are improved.

Description

Technical Field

[0001] This utility model relates to the field of bolt fastening devices, and in particular to a segmented bolt fastening device with a self-locking function. Background Technology

[0002] A search of Chinese patents revealed publication number CN210686582U, which describes a bolt fastener with anti-slip threads. The fastener includes a screw and a second connecting groove. A first nut is fixed to the top of the screw, and the first nut has a first connecting groove on its top. A rotating rod is fitted inside the first connecting groove. A rotating groove is formed on one side of the first connecting groove. A rotating block is fixed to the rotating rod side near the rotating groove, and a sliding groove is formed on the rotating groove side away from the first connecting groove. A sliding block is fitted inside the sliding groove, and a second nut is fixed to one side of the sliding block. The second connecting groove, near the first nut, is located inside the second nut. This anti-slip bolt fastener allows the second nut to be pulled to remove it after prolonged use, as its hexagonal edge may become stripped. Once the second nut is removed, it can be rotated through the hexagonal edge of the first nut. Since the hexagonal edge of the first nut is one size smaller than that of the second nut, it allows the second nut to be reused even after stripping.

[0003] Existing bolt fastening devices lack self-locking functionality. Generally, bolt fastening devices work with nuts to secure parts. During use, nuts and bolts are easily affected by external factors, causing them to loosen, resulting in unstable connections and affecting installation. Furthermore, the length of bolt fasteners is not adjustable, as the length of most bolt fasteners is fixed. When fastening workpieces of different thicknesses, the entire bolt fastener needs to be replaced, increasing usage costs and reducing practicality and applicability. To address these problems, we propose a segmented bolt fastening device with a self-locking function. Utility Model Content

[0004] The purpose of this invention is to provide a segmented bolt fastening device with a self-locking function, which has the advantages of having a self-locking function and adjustable length.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a segmented bolt fastening device with self-locking function, including a bolt head, a connecting rod integrally formed on the surface of the bolt head, a screw at one end of the connecting rod, a first sliding groove on the surface of the screw, a first slider slidably connected to the inner wall of the first sliding groove, a ratchet bolted to the surface of the first slider, a nut threadedly connected to the surface of the screw, and the ratchet rotatably connected to the inner wall of the nut, a locking block provided on the inner wall of the nut, the locking block being adapted to the ratchet, a telescopic mechanism provided between the locking block and one end of the screw, and a first bolt threadedly connected to the inner wall of the nut.

[0006] By adopting the above technical solution, the locking block engages with the ratchet under the action of the spring, causing the ratchet to rotate in one direction. The unidirectional rotation of the ratchet causes the nut to rotate in one direction. When the nut is tightened in place, the locking block engages with the ratchet to prevent the nut from rotating in the opposite direction. This method achieves the purpose of self-locking, ensures the stability of the fastener, and improves safety.

[0007] The present invention is further configured such that: one end of the screw is integrally formed with a plug rod, one end of the connecting rod is provided with a plug hole, and the plug hole is slidably sleeved with the plug rod; the inner walls of the connecting rod and the plug rod are threaded with a second bolt.

[0008] By adopting the above technical solution, the second bolt is loosened using a tool, the plug rod is pulled out from the plug hole, and then the connecting rod of the required length is inserted into the plug rod. The second bolt is then installed and tightened to fix it, which can achieve the purpose of adjusting the length, reduce the cost of use, and improve practicality and applicability.

[0009] The present invention is further configured such that: the telescopic mechanism includes a fixed block, the fixed block is slidably connected to the inner wall of the nut, and the fixed block is rotatably connected to one end of the first bolt, and the inner wall of the fixed block is slidably connected to the snap-fit ​​block, and a spring is provided between the snap-fit ​​block and the fixed block.

[0010] By adopting the above technical solution, a telescopic mechanism is set up to continuously provide force to the locking block, so that the locking block and the ratchet can only rotate in one direction, which is convenient to use.

[0011] The present invention is further configured such that both the first bolt and the second bolt are internal hex bolts.

[0012] By adopting the above technical solution, both the first and second bolts are internal hex bolts, which facilitates use.

[0013] The present invention is further configured such that: a second slider is bolted to the surface of the fixing block, a second groove is slidably connected to the surface of the second slider, and the second groove is formed on the inner wall of the nut.

[0014] By adopting the above technical solution, a second slider and a second slide groove are provided to prevent the fixed block from being fixed.

[0015] The present invention is further configured such that: the surface of the bolt head is provided with an internal hexagonal hole.

[0016] By adopting the above technical solution and setting internal hexagonal holes, it can be disassembled and assembled using different tools, making it convenient to use.

[0017] The present invention is further configured such that: the number of the first sliding grooves is four, and the first sliding grooves are evenly distributed on the surface of the screw.

[0018] By adopting the above technical solution, the stability is improved by setting four first sliding grooves, which are evenly distributed on the surface of the screw.

[0019] The present invention is further configured such that both the insertion hole and the insertion rod are square.

[0020] By adopting the above technical solution, the insertion holes and insertion rods are both square, which facilitates connection, prevents the connecting rod and screw from rotating, and ensures stability.

[0021] In summary, this utility model has the following beneficial effects:

[0022] 1. This utility model uses a snap-fit ​​block that engages with a ratchet under the action of a spring, causing the ratchet to rotate in one direction. The unidirectional rotation of the ratchet causes the nut to rotate in one direction. When the nut is tightened in place, the snap-fit ​​block engages with the ratchet to prevent the nut from rotating in the opposite direction. This achieves the purpose of self-locking, ensuring the stability of the fastener and improving safety.

[0023] 2. This utility model achieves the purpose of length adjustment by using a tool to loosen the second bolt, pull the plug rod out of the plug hole, insert the connecting rod of the required length onto the plug rod, and then install and tighten the second bolt. This method of fixing the rod can reduce the cost of use and improve its practicality and applicability. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural view of the present invention;

[0025] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0026] Figure 3 This is a side sectional view of the structure of this utility model;

[0027] Figure 4 This is a partial structural side view of the present invention;

[0028] Figure 5 This is a partial structural side view of the present invention;

[0029] Figure 6 This is a utility model Figure 3 Enlarged view of the structure at point A in the middle.

[0030] Reference numerals: 1. Bolt head; 2. Connecting rod; 3. Screw; 4. First slide groove; 5. First slider; 6. Ratchet; 7. Nut; 8. Snap-fit ​​block; 9. Telescopic mechanism; 10. First bolt; 11. Insert rod; 12. Insert hole; 13. Second bolt; 14. Fixing block; 15. Spring; 16. Second slider; 17. Second slide groove; 18. Internal hexagonal hole. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Example 1:

[0033] refer to Figure 1 , Figure 2 , Figure 3 and Figure 6 A segmented bolt fastening device with self-locking function includes a bolt head 1, a connecting rod 2 integrally formed on the surface of the bolt head 1, a screw 3 at one end of the connecting rod 2, a first sliding groove 4 on the surface of the screw 3, a first slider 5 slidably connected to the inner wall of the first sliding groove 4, a ratchet 6 bolted to the surface of the first slider 5, a nut 7 threadedly connected to the surface of the screw 3, and the ratchet 6 rotatably connected to the inner wall of the nut 7. A locking block 8 is provided on the inner wall of the nut 7, and the locking block 8 is adapted to the ratchet 6. A telescopic mechanism 9 is provided between the locking block 8 and one end of the screw 3. A first bolt 10 is threadedly connected to the inner wall of the nut 7. The locking block 8 engages with the ratchet 6 under the action of a spring 15, causing the ratchet 6 to rotate in one direction. The unidirectional rotation of the ratchet 6 causes the nut 7 to rotate in one direction. When the nut 7 is tightened in place, the locking block 8 engages with the ratchet 6, preventing the nut 7 from rotating in the opposite direction. This achieves the purpose of self-locking function, ensures the stability of the fastener, and improves safety.

[0034] refer to Figure 6 The telescopic mechanism 9 includes a fixed block 14, which is slidably connected to the inner wall of the nut 7 and rotatably connected to one end of the first screw 3. The inner wall of the fixed block 14 is slidably connected to the locking block 8. A spring 15 is provided between the locking block 8 and the fixed block 14. By setting the telescopic mechanism 9, a continuous force is provided to the locking block 8, so that the locking block 8 and the ratchet 6 can only rotate in one direction, which is convenient for use.

[0035] refer to Figure 6 The surface of the fixing block 14 is bolted with a second slider 16, and the surface of the second slider 16 is slidably connected with a second groove 17, which is opened on the inner wall of the nut 7. By setting the second slider 16 and the second groove 17, the fixing block 14 is prevented from being fixed.

[0036] refer to Figure 5 The bolt head 1 has an internal hexagonal hole 18 on its surface. By setting the internal hexagonal hole 18, it can be disassembled and assembled using different tools, which is convenient to use.

[0037] refer to Figure 1 There are four first grooves 4, and the first grooves 4 are evenly distributed on the surface of the screw 3. By setting the number of first grooves 4 to four and the first grooves 4 being evenly distributed on the surface of the screw 3, the stability is improved.

[0038] Example 2:

[0039] refer to Figure 1 , Figure 2 and Figure 4 One end of the screw 3 is integrally formed with a plug rod 11, and one end of the connecting rod 2 is provided with a plug hole 12, which is slidably sleeved with the plug rod 11. The inner walls of the connecting rod 2 and the plug rod 11 are threaded with a second bolt 13. By using a tool to loosen the second bolt 13, the plug rod 11 can be pulled out from the plug hole 12. Then, the connecting rod 2 of the required length can be inserted into the plug rod 11, and the second bolt 13 can be installed and tightened. This method of fixing can achieve the purpose of adjusting the length, reduce the cost of use, and improve practicality and applicability.

[0040] refer to Figure 1 Both the first bolt 10 and the second bolt 13 are internal hex bolts, which makes them convenient to use.

[0041] refer to Figure 4 Both the insertion hole 12 and the insertion rod 11 are square. By setting both the insertion hole 12 and the insertion rod 11 to be square, it is convenient to connect, prevents the connecting rod 2 and the screw 3 from rotating, and ensures stability.

[0042] Brief description of usage: The locking block 8 engages with the ratchet 6 under the action of the spring 15, causing the ratchet 6 to rotate in one direction. The unidirectional rotation of the ratchet 6 causes the nut 7 to rotate in one direction. When the nut 7 is tightened in place, the locking block 8 engages with the ratchet 6, locking the nut 7 and preventing it from rotating in the opposite direction. For disassembly, use a tool to rotate the first bolt 10. The rotation of the first bolt 10 causes it to move, which in turn moves the fixing block 14, causing the locking block 8 to move. The movement of the locking block 8 disengages from the ratchet 6, allowing the nut 7 to be disassembled, thus achieving the purpose of self-locking. Use a tool to loosen the second bolt 13, pull the connector 11 out of the connector hole 12, and then insert the connecting rod 2 of the required length onto the connector 11. Install and tighten the second bolt 13 to fix it. Alternatively, the screw 3 of the required length can be replaced to adjust the length.

[0043] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A segmented bolt fastening device with self-locking function, comprising a bolt head (1), characterized in that, The bolt head (1) has a connecting rod (2) integrally formed on its surface. One end of the connecting rod (2) is provided with a screw (3). The surface of the screw (3) is provided with a first sliding groove (4). The inner wall of the first sliding groove (4) is slidably connected to a first slider (5). The surface of the first slider (5) is bolted with a ratchet (6). The surface of the screw (3) is threaded with a nut (7). The ratchet (6) is rotatably connected to the inner wall of the nut (7). The inner wall of the nut (7) is provided with a snap-fit ​​block (8). The snap-fit ​​block (8) is adapted to the ratchet (6). A telescopic mechanism (9) is provided between the snap-fit ​​block (8) and one end of the screw (3). The inner wall of the nut (7) is threaded with a first bolt (10).

2. The segmented bolt fastening device with self-locking function according to claim 1, characterized in that, One end of the screw (3) is integrally formed with a plug rod (11), and one end of the connecting rod (2) is provided with a plug hole (12), and the plug hole (12) is slidably sleeved with the plug rod (11). The inner walls of the connecting rod (2) and the plug rod (11) are threaded with a second bolt (13).

3. A segmented bolt fastening device with self-locking function according to claim 1, characterized in that, The telescopic mechanism (9) includes a fixed block (14), which is slidably connected to the inner wall of the nut (7), and the fixed block (14) is rotatably connected to one end of the first bolt (10), and the inner wall of the fixed block (14) is slidably connected to the snap-fit ​​block (8), and a spring (15) is provided between the snap-fit ​​block (8) and the fixed block (14).

4. A segmented bolt fastening device with self-locking function according to claim 2, characterized in that, Both the first bolt (10) and the second bolt (13) are internal hex bolts.

5. A segmented bolt fastening device with self-locking function according to claim 3, characterized in that, The surface of the fixing block (14) is bolted with a second slider (16), the surface of the second slider (16) is slidably connected with a second groove (17), and the second groove (17) is opened on the inner wall of the nut (7).

6. A segmented bolt fastening device with self-locking function according to claim 1, characterized in that, The surface of the bolt head (1) is provided with an internal hexagonal hole (18).

7. A segmented bolt fastening device with self-locking function according to claim 1, characterized in that, The number of the first grooves (4) is four, and the first grooves (4) are evenly distributed on the surface of the screw (3).

8. A segmented bolt fastening device with self-locking function according to claim 2, characterized in that, Both the insertion hole (12) and the insertion rod (11) are square.

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