Bolt not prone to abrasion

Abstract

The utility model relates to a bolt not prone to abrasion. The bolt comprises a threaded rod. One end face of the first nut is fixed to the screw rod, a groove is formed in the end face, deviating from the screw rod, of the first nut, and the groove is provided with a first abutting face and a second abutting face which are arranged in a spaced mode in the circumferential direction of the first nut; and the second nut is provided with an abutting part, the abutting part can be inserted into the groove, the second nut rotates, and the abutting part can abut against the first abutting face or the second abutting face. The first nut and the second nut are only stressed in the circumferential direction, so that abrasion between the first nut and the second nut can be greatly reduced, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of bolt equipment, and in particular to a bolt that is not easily worn. Background Technology

[0002] In daily production and life, using bolts to fix different components is a common method. Bolts generally have an internal hexagonal face. Users insert a screwdriver or other tool into the internal hexagonal face and turn it to rotate the bolt, allowing it to be inserted into the corresponding threaded hole. However, after repeated use, the internal hexagonal face of existing bolts will wear down. Excessive wear will cause screwdrivers or other tools to be unable to turn the bolt, thus making it impossible to install or disassemble different components. Utility Model Content

[0003] The purpose of this utility model is to provide a wear-resistant bolt, which has the characteristics of being wear-resistant, having a long service life, and having good applicability.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A wear-resistant bolt includes: a screw; a first nut, one end face of which is fixed to the screw, the end face of the first nut facing away from the screw having a groove, and the groove having a first abutment surface and a second abutment surface spaced apart along the circumferential direction of the first nut; and a second nut having an abutment portion that can be inserted into the groove, and the second nut can rotate so that the abutment portion can abut against either the first abutment surface or the second abutment surface.

[0006] Preferably, along the circumferential direction of the first nut, the central angle of the groove is greater than the central angle of the abutment portion.

[0007] Preferably, the number of grooves is one or more, the number of abutting parts is one or more, and each abutting part is inserted into each groove in a corresponding manner.

[0008] Preferably, along the circumferential direction of the first nut, both the first abutting surface and the second abutting surface are provided with snap-fit ​​grooves, and the abutting part is provided with two snap-fit ​​blocks. When the second nut rotates, the snap-fit ​​blocks are inserted into the snap-fit ​​grooves.

[0009] Preferably, along the axial direction of the first nut, the heights of the first abutment surface and the second abutment surface are less than the height of the first nut;

[0010] Along the circumferential direction of the first nut, there is a guide groove between the first abutting surface and the second abutting surface, and part of the abutting portion can be inserted into the guide groove.

[0011] Preferably, both the groove and the abutment portion are arc-shaped along the circumferential direction of the first nut.

[0012] Preferably, the bolt further includes a guide ring, which is coaxial with and fixed to the first nut, and the second nut moves axially and abuts against the inner wall surface of the guide ring.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] The wear-resistant bolt provided in the above technical solution has a groove in the first nut and an abutment in the second nut. The abutment can be inserted into the groove, and when the user rotates the second nut in either the forward or reverse direction, the abutment can abut against the first or second abutment surface, thereby driving the first nut and the bolt to rotate, realizing installation and disassembly. Furthermore, the first nut and the second nut are only subjected to force in the circumferential direction, which can greatly reduce wear between them and increase service life. Attached Figure Description

[0015] Figure 1 An assembly diagram of a wear-resistant bolt provided for an embodiment of this utility model;

[0016] Figure 2 An exploded view of a wear-resistant bolt provided for an embodiment of this utility model;

[0017] Figure 3 A schematic diagram of the screw and the first nut provided in an embodiment of this utility model;

[0018] Figure 4 This is a schematic diagram of the second nut provided in an embodiment of the present utility model.

[0019] 1. Screw; 2. First nut; 21. Groove; 22. First abutting surface; 23. Second abutting surface; 24. Snap-fit ​​groove; 25. Guide groove; 3. Second nut; 31. Abutting part; 32. Snap-fit ​​block; 4. Guide ring. Detailed Implementation

[0020] The present invention will now be described in more detail with reference to the accompanying drawings. It should be noted that the description of the present invention with reference to the accompanying drawings is merely illustrative and not restrictive. Various embodiments can be combined with each other to form other embodiments not shown in the following description.

[0021] Please see Figures 1 to 4The wear-resistant bolt includes a screw rod 1, a first nut 2, a second nut 3, and a guide ring 4. Specifically, one end face of the first nut 2 is fixed to the screw rod 1. The end face of the first nut 2 facing away from the screw rod 1 has a groove 21. Along the circumferential direction of the first nut 2, the groove 21 has a first abutting surface 22 and a second abutting surface (23) spaced apart. The second nut 3 has an abutting part 31, which can be inserted into the groove 21. When the second nut 3 rotates, the abutting part 31 can abut against the first abutting surface 22 or the second abutting surface 23.

[0022] This utility model provides a wear-resistant bolt. By providing a groove 21 in the first nut 2 and an abutment part 31 in the second nut 3, the abutment part 31 can be inserted into the groove 21. When the user rotates the second nut 3 in either the forward or reverse direction, the abutment part 31 can abut against the first abutment surface 22 or the second abutment surface 23, thereby driving the first nut 2 and the screw 1 to rotate, realizing installation and disassembly. Furthermore, the first nut 2 and the second nut 3 are only subjected to force in the circumferential direction, which can greatly reduce wear between them and increase their service life.

[0023] Importantly, even if the first abutment surface 22 and the second abutment surface 23 are worn, it will not affect the contact between the abutment part 31 and the first abutment surface 22 and the second abutment surface 23. That is, the second nut 3 can still drive the first nut 2 to rotate. In addition, the end face of the second nut 3 facing away from the first nut 2 has an internal hexagonal face. The user can insert the internal hexagonal face with a screwdriver or other tools to drive the second nut 3 to rotate. If the internal hexagonal face of the second nut 3 is worn, the user only needs to replace the second nut 3. The first nut 2, screw 1, etc. can still be used, thereby greatly reducing the cost of use.

[0024] The screw 1 is threaded, which facilitates its engagement with the threaded hole of the component to be fixed.

[0025] Along the circumferential direction of the first nut 2, the central angle of the groove 21 is greater than the central angle of the abutment portion 31. That is, the circumferential length of the groove 21 is greater than the circumferential length of the abutment portion 31. It can be imagined that the abutment portion 31 needs to be inserted into the groove 21 for the second nut 3 to drive the first nut 2 to rotate. Therefore, in order to facilitate the insertion of the abutment portion 31 into the groove 21, this embodiment increases the circumferential length of the groove 21 and reduces the circumferential length of the abutment portion 31, thereby reducing the difficulty of inserting the abutment portion 31 into the groove 21. In addition, since the abutment portion 31 will rotate in the circumferential direction, even if the circumferential length of the abutment portion 31 is shorter, it will not affect the abutment portion 31 abutting with the first abutment surface 22 and the second abutment surface 23.

[0026] The number of grooves 21 is set to one or more, and the number of abutting parts 31 is set to one or more, with each abutting part 31 being inserted into each groove 21 in a corresponding manner.

[0027] In this embodiment, the number of grooves 21 and abutment portions 31 is set to one. In this case, it is easier to insert the abutment portion 31 into the groove 21, and the overall structure of the abutment portion 31 can be larger, that is, the structural strength of the abutment portion 31 is greater, which is beneficial to increasing the service life. Of course, in other embodiments, the number of grooves 21 and abutment portions 31 can be multiple, and there is no limitation here.

[0028] Along the circumferential direction of the first nut 2, both the first abutting surface 22 and the second abutting surface 23 are provided with snap-fit ​​grooves 24, and the abutting part 31 is provided with two snap-fit ​​blocks 32. When the second nut 3 is rotated, the snap-fit ​​blocks 32 are inserted into the snap-fit ​​grooves 24.

[0029] It is conceivable that when the abutting part 31 is inserted into the groove 21 and abuts against the first abutting surface 22 or the second abutting surface 23, the first nut 2 and the second nut 3 experience circumferential force but lack axial restraint. Therefore, the second nut 3 may move axially relative to the first nut 2. To solve the above problem, this embodiment provides locking grooves 24 on the first abutting surface 22 and the second abutting surface 23, and the abutting part 31 is provided with two locking blocks 32. Therefore, whether the second nut 3 rotates clockwise or counterclockwise, one locking block 32 can be inserted into one locking groove 24, and the locking block 32 abuts against the inner wall of the locking groove 24, thus achieving axial restraint between the first nut 2 and the second nut 3, which helps to increase stability.

[0030] Along the axial direction of the first nut 2, the height of the first abutting surface 22 and the second abutting surface 23 is less than the height of the first nut 2; along the circumferential direction of the first nut 2, a guide groove 25 is provided between the first abutting surface 22 and the second abutting surface 23, and a portion of the abutting part 31 can be inserted into the guide groove 25. In addition, along the axial direction of the first nut 2, the depth of the guide groove 25 is less than the depth of the groove 21, and the guide groove 25 and the groove 21 can be concentrically arranged.

[0031] It is conceivable that, due to the presence of the guide groove 25, the abutment part 31 will be inserted into the groove 21 or the guide groove 25 when the second nut 3 is moved axially. If the abutment part 31 is inserted into the groove 21, it can be directly installed or removed; if the abutment part 31 is inserted into the guide groove 25, it is only necessary to rotate the second nut 3, and the abutment part 31 will rotate along the guide groove 25 until the abutment part 31 is inserted into the groove 21, thereby reducing the difficulty of inserting the abutment part 31 into the groove 21.

[0032] Along the circumferential direction of the first nut 2, both the groove 21 and the abutment portion 31 are arc-shaped.

[0033] The guide ring 4 is coaxial and fixed with the first nut 2, preferably integrally formed. The second nut 3 moves axially and abuts against the inner wall surface of the guide ring 4. Therefore, the guide ring 4 restricts the radial movement of the second nut 3, thus ensuring that the second nut 3 and the first nut 2 remain coaxial, thereby reducing the difficulty of inserting the abutment part 31 into the groove 21. Furthermore, the guide ring 4 can further enhance the structural strength of the first nut 2.

[0034] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A wear-resistant bolt, characterized in that, include: Screw (1); A first nut (2) is fixed to the screw (1) at one end face. The end face of the first nut (2) away from the screw (1) has a groove (21). Along the circumferential direction of the first nut (2), the groove (21) has a first abutting surface (22) and a second abutting surface (23) spaced apart. The second nut (3) has an abutment portion (31) that can be inserted into the groove (21), and when the second nut (3) rotates, the abutment portion (31) can abut against the first abutment surface (22) or the second abutment surface (23).

2. The wear-resistant bolt as described in claim 1, characterized in that, Along the circumferential direction of the first nut (2), the central angle of the groove (21) is greater than the central angle of the abutment portion (31).

3. The wear-resistant bolt as described in claim 1, characterized in that, The number of grooves (21) is set to one or more, and the number of abutting parts (31) is set to one or more, and each abutting part (31) is inserted into each groove (21) in a corresponding manner.

4. The wear-resistant bolt as described in claim 1, characterized in that, Along the circumferential direction of the first nut (2), both the first abutting surface (22) and the second abutting surface (23) are provided with snap-fit ​​grooves (24), and the abutting part (31) is provided with two snap-fit ​​blocks (32). When the second nut (3) rotates, the snap-fit ​​blocks (32) are inserted into the snap-fit ​​grooves (24).

5. The wear-resistant bolt as described in claim 1, characterized in that, Along the axial direction of the first nut (2), the heights of the first abutting surface (22) and the second abutting surface (23) are less than the height of the first nut (2); Along the circumferential direction of the first nut (2), there is a guide groove (25) between the first abutting surface (22) and the second abutting surface (23), and part of the abutting part (31) can be inserted into the guide groove (25).

6. The wear-resistant bolt as described in claim 1, characterized in that, Along the circumferential direction of the first nut (2), both the groove (21) and the abutment (31) are arc-shaped.

7. The wear-resistant bolt as described in claim 1, characterized in that, The bolt also includes a guide ring (4), which is coaxial with and fixed to the first nut (2). The second nut (3) moves axially and abuts against the inner wall of the guide ring (4).

Images