Bolt and nut assembly convenient to disassemble

Abstract

The utility model discloses a conveniently dismantled bolt nut subassembly, including the bolt, the outside of the bottom end of the bolt is connected with the nut through the thread, the bolt includes two second end caps that are distributed symmetrically, there is the gap between the two nut, two sides of the two second end caps are provided with the first end caps, and the first end caps are provided with the second end caps. Second screwing strips are fixed to the bottom ends of the two second end caps, first screwing strips are fixed to the bottom ends of the two first end caps, threads are arranged on the outer sides of the second screwing strips and the outer sides of the two first screwing strips, and the size of a gap between the two second end caps is larger than the thread depth of the threads on the outer sides of the first screwing strips and the thread depth of the threads on the outer sides of the second screwing strips. And the two second screwing strips and the two first screwing strips are mutually spliced to form a threaded rod and penetrate through the middle of the nut. By reducing the dismounting difficulty of the bolt and the nut, the bolt and the nut which are rusted, slipped or excessively abraded in edge can be dismounted and recovered conveniently, the operation difficulty is reduced, and the recovery efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt and nut assemblies, in particular to a bolt and nut assembly which is easy to disassemble. Background Art

[0002] Bolts are cylindrical threaded fasteners used to match nuts. They are a type of fastener consisting of a head and a screw (a cylinder with external threads). They need to be matched with a nut, which is a nut that is screwed together with the bolt or screw to act as a fastener. They are an essential component for all manufacturing machinery. Depending on the material, they are divided into several major types, such as carbon steel, stainless steel, and non-ferrous metals (such as copper). Bolts and nuts are used to fasten two parts with through holes. This type of connection is called a bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection.

[0003] However, during use, the outer surface of the bolt and nut will wear due to friction between the tool. When the edge of the bolt and nut is excessively worn or the bolt and nut are threaded, it will become difficult to disassemble the bolt and nut, increasing the difficulty of operation. Therefore, it does not meet the existing needs. In this regard, we propose a bolt and nut assembly that is easy to disassemble. Utility Model Content

[0004] The purpose of the present utility model is to provide a bolt and nut assembly that is easy to disassemble, so as to solve the problems proposed in the above-mentioned background technology that the outer surface of the bolt and nut will wear due to friction between the tool during use, and when the edge of the bolt and nut is excessively worn or the bolt and nut is threaded, it will make the bolt and nut difficult to disassemble, increasing the difficulty of operation.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a bolt and nut assembly that is easy to disassemble, comprising a bolt, the outer side of the bottom end of the bolt is connected to the nut by a thread, the bolt comprises two symmetrically distributed second end caps, there is a gap between the two nuts, a first end cap is provided on both sides of the two second end caps, a second screw-on bar is fixed to the bottom ends of the two second end caps, a first screw-on bar is fixed to the bottom ends of the two first end caps, the second screw-on bar and the outer sides of the two first screw-on bars are provided with threads, the gap size between the two second end caps is greater than the thread depth of the outer threads of the first and second screw-on bars, and the two second screw-on bars are spliced ​​with the two first screw-on bars to form a threaded rod that passes through the middle of the nut, and the nut is connected to the first and second screw-on bars by threads.

[0006] Preferably, the outer surface of the nut is provided with a plurality of reserved relay grooves distributed in a circular array around its axis, and the inner surface of the reserved relay groove is provided with a plurality of vertical anti-slip grooves.

[0007] Preferably, two circular holes are provided inside the second end cap, and two symmetrical mounting holes are provided inside the first end cap, and guide holes are provided inside the mounting holes.

[0008] Preferably, a locking screw is slidably inserted into the inner side of the mounting hole, and a connecting sleeve is slidably inserted into the inner side of the guide hole. The ends of the connecting sleeve and the locking screw pass through the first end cap and are slidably inserted into the circular hole inside the second end cap.

[0009] Preferably, a threaded hole is provided at the end of the connecting sleeve that is inserted into the interior of the second end cap, and the threaded end of the locking screw is rotatably inserted into the threaded hole at the end of the connecting sleeve.

[0010] Preferably, a return spring is sleeved on the outer side of the end portion of the connecting sleeve located inside the guide hole, one end of the return spring is fixed to the connecting sleeve, and the other end of the return spring is fixed to the first end cap.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. According to the utility model, after the outer edge of the nut is worn, thread-stripped or rusted, the two second end caps are directly brought close to each other, so that the first screw-on strip at the bottom end of the second end cap is separated from the inner wall of the nut, and then the second end cap layer is taken out from between the first end cap, and the second screw-on strip layer can be separated from the first screw-on strip. Then, the two first screw-on strips are brought close to each other, and the outer sides of the first and second screw-on strips of the nut layer can be removed, thereby reducing the difficulty of disassembling the bolts and nuts, facilitating the disassembly and recycling of bolts and nuts that are rusted, thread-stripped or have excessive edge wear, reducing the difficulty of operation and improving the recycling efficiency.

[0013] 2. When the hexagonal wrench cannot rotate the nut due to excessive wear on the edge of the nut, other tools can be used to clamp the inner sides of the two symmetrical reserved relay grooves to rotate the nut, and the friction resistance between the tool and the nut is increased by the anti-slip groove, ensuring that the nut can still be disassembled even if the edge of the nut is excessively worn, without affecting the use of the bolt and nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the nut of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the bolt of the utility model;

[0017] Figure 4 This is a schematic diagram of the connection between the first end cap and the second end cap of the present invention.

[0018] In the figure: 1. Bolt; 11. First end cap; 12. Second end cap; 13. Mounting hole; 14. First screw-on bar; 15. Second screw-on bar; 16. Guide hole; 17. Connecting sleeve; 18. Return spring; 19. Locking screw; 2. Nut; 3. Reserved relay groove; 4. Anti-slip groove. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] like Figure 1 and Figure 3 As shown, a bolt and nut assembly that is easy to disassemble, the outer side of the bottom end of the bolt 1 is connected to the nut 2 by a thread, the bolt 1 includes two symmetrically distributed second end caps 12, and there is a gap between the two nuts 2. First end caps 11 are provided on both sides of the two second end caps 12, and second screw-on strips 15 are fixed to the bottom ends of the two second end caps 12. First screw-on strips 14 are fixed to the bottom ends of the two first end caps 11. The second screw-on strip 15 and the outer sides of the two first screw-on strips 14 are both provided with threads, the size of the gap between the two second end caps 12 is greater than the thread depth of the outer threads of the first screw-on strip 14 and the second screw-on strip 15, and the two second screw-on strips 15 is spliced ​​with the two first rotational connecting strips 14 to form a threaded rod and passes through the middle of the nut 2. The nut 2 is connected to the first rotational connecting strip 14 and the second rotational connecting strip 15 through a threaded connection. After the outer edge of the nut 2 is worn, stripped or rusted, the two second end caps 12 are directly brought close to each other, so that the first rotational connecting strip 14 at the bottom end of the second end cap 12 is separated from the inner wall of the nut 2, and then the second end cap 12 is taken out from between the first end cap 11, and the second rotational connecting strip 15 can be separated from the first rotational connecting strip 14, and then the two first rotational connecting strips 14 are brought close to each other, and the outer sides of the first rotational connecting strip 14 and the second rotational connecting strip 15 of the nut 2 can be removed.

[0021] like Figure 4As shown, two circular holes are provided inside the second end cap 12, and two symmetrical mounting holes 13 are provided inside the first end cap 11. A guide hole 16 is provided on the inner side of the mounting hole 13, and a locking screw 19 is slidably inserted into the inner side of the mounting hole 13. A connecting sleeve 17 is slidably inserted into the inner side of the guide hole 16. The ends of the connecting sleeve 17 and the locking screw 19 pass through the first end cap 11 and are slidably inserted into the circular holes inside the second end cap 12. The end of the connecting sleeve 17 inserted into the interior of the second end cap 12 is provided with a threaded hole, and the threaded end of the locking screw 19 is rotatably inserted into the threaded hole at the end of the connecting sleeve 17. The second end cap 12 and the mounting hole 13 are connected and fixed by using the connecting sleeve 17 and the locking screw 19 to ensure that the second end cap 12 and the mounting hole 13 will not be easily separated from each other.

[0022] A return spring 18 is sleeved on the outer side of the end portion of the connecting sleeve 17 located inside the guide hole 16. One end of the return spring 18 is fixed to the connecting sleeve 17, and the other end of the return spring 18 is fixed to the first end cap 11. The return spring 18 is used to limit the position of the connecting sleeve 17 to ensure that the connecting sleeve 17 will not fall from the inside of the first end cap 11. After the locking screw 19 is separated from the connecting sleeve 17, the return spring 18 can elastically reset and drive the connecting sleeve 17 to separate from the second end cap 12. There is no need to manually remove the connecting sleeve 17, and the disassembly of the second end cap 12 and the first end cap 11 is not affected.

[0023] like Figure 1 and Figure 2 As shown, the outer surface of the nut 2 is provided with a plurality of reserved relay grooves 3 arranged in a circular array around its axis, and the inner surface of the reserved relay grooves 3 is provided with a plurality of vertical anti-slip grooves 4. If the edge of the nut 2 is excessively worn and the hexagonal wrench cannot rotate the nut 2, other tools can be used to engage the inner sides of two symmetrical reserved relay grooves 3 to rotate the nut 2.

[0024] Working principle: When rust appears between the bolt 1 and the nut 2 or the edge of the end of the bolt 1 is excessively worn and cannot be tightened by a hexagonal wrench, the staff only needs to rotate the locking screw 19 inside the mounting hole 13 to separate the locking screw 19 from the end of the connecting sleeve 17, and remove the separated locking screw 19 from the first end cap 11. At this time, the connecting sleeve 17 is separated from the locking screw 19, so that the connecting sleeve 17 can no longer apply pressure to the reset spring 18. At this time, the reset spring 18 elastically recovers and drives the connecting sleeve 17 to reset, so that the connecting sleeve 17 is separated from the second end cap 12. All locking screws 19 are taken out according to the above operation. Then move the second end cap 12 closer to the other second end cap 12, so that the second connecting strip 15 is separated from the inner wall of the nut 2. At this time, slide the second connecting strip 15 out from between the two first connecting strips 14, and then move the two first connecting strips 14 closer to each other to separate the bolt 1 and the nut 2. If the outer edge of the nut 2 is excessively worn and cannot be twisted with a hexagonal wrench, other tools can be used to clamp the nut 2 on the inner side of the two symmetrical reserved relay grooves 3 to rotate the nut 2, and rotate the nut 2 from the outside of the bolt 1 to remove it, reducing the difficulty of disassembly of the bolts and nuts, and facilitating the disassembly and recycling of bolts and nuts that are rusted, threaded, or have excessive edge wear, reducing the difficulty of operation and improving the recycling efficiency.

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A bolt and nut assembly that is easy to disassemble, comprising a bolt (1), characterized in that: The outer side of the bottom end of the bolt (1) is connected to the nut (2) through a thread. The bolt (1) includes two symmetrically distributed second end caps (12). There is a gap between the two nuts (2). First end caps (11) are provided on both sides of the two second end caps (12). Second screw-on bars (15) are fixed to the bottom ends of the two second end caps (12). First screw-on bars (14) are fixed to the bottom ends of the two first end caps (11). The outer sides of the second screw-on bars (15) and the two first screw-on bars (14) are both provided with threads. The size of the gap between the two second end caps (12) is greater than the thread depth of the outer threads of the first screw-on bars (14) and the second screw-on bars (15). The two second screw-on bars (15) and the two first screw-on bars (14) are spliced ​​together to form a threaded rod that passes through the middle of the nut (2). The nut (2) is connected to the first screw-on bar (14) and the second screw-on bar (15) through a thread.

2. The bolt and nut assembly that is easy to disassemble according to claim 1, characterized in that: The outer surface of the nut (2) is provided with a plurality of reserved relay grooves (3) distributed in a circular array around its axis, and the inner surface of the reserved relay groove (3) is provided with a plurality of vertical anti-slip grooves (4).

3. The bolt and nut assembly that is easy to disassemble according to claim 1, characterized in that: Two circular holes are provided inside the second end cap (12), two symmetrical mounting holes (13) are provided inside the first end cap (11), and guide holes (16) are provided inside the mounting holes (13).

4. The bolt and nut assembly that is easy to disassemble according to claim 3, characterized in that: A locking screw (19) is slidably inserted into the inner side of the mounting hole (13), and a connecting sleeve (17) is slidably inserted into the inner side of the guide hole (16). The ends of the connecting sleeve (17) and the locking screw (19) pass through the first end cap (11) and are slidably inserted into the circular hole inside the second end cap (12).

5. The bolt and nut assembly that is easy to disassemble according to claim 4, characterized in that: The end of the connecting sleeve (17) inserted into the interior of the second end cap (12) is provided with a threaded hole, and the threaded end of the locking screw (19) is rotatably inserted into the threaded hole at the end of the connecting sleeve (17).

6. The bolt and nut assembly that is easy to disassemble according to claim 5, characterized in that: A return spring (18) is sleeved on the outer side of the end portion of the connecting sleeve (17) located inside the guide hole (16); one end of the return spring (18) is fixed to the connecting sleeve (17), and the other end of the return spring (18) is fixed to the first end cap (11).

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