High-low tooth notched bolt

Abstract

The utility model discloses a high-low tooth notched bolt, and relates to the field of bolts, the high-low tooth notched bolt comprises a bolt rod, the outer wall of the bolt rod is provided with a low thread and a high thread which are connected with each other, the edge of the high thread is provided with a plurality of notches distributed at equal intervals, and the outer wall of the top of the bolt rod is provided with a nut assembly. According to the bolt, the high-low threads are formed in the bolt rod, the notches are formed in the edges of the high threads, and the high-low threads are matched with the notches in the threads, so that the situation that the bolt is prone to loosening during use is effectively prevented, and the situation that an existing bolt is prone to loosening is solved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of bolts, in particular to a high-low tooth cutout bolt. BACKGROUND

[0002] Bolt: a cylindrical threaded fastener used with a nut to secure or fasten two parts together. A type of fastener consisting of a head and a threaded shank (cylindrical body with external threads), used in conjunction with a nut to secure or fasten two parts together. This type of connection is called bolted connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection.

[0003] The existing high-low tooth cutout bolt is prone to looseness in actual use, mainly because the bolt is used in a complex environment and is in a vibrating environment for a long time, which causes the bolt to loosen, and once the bolt loosens, the structure of the bolt loosens, causing excessive friction damage to the structure. CONTENT OF THE INVENTION

[0004] In order to solve the problem that the existing bolt is prone to looseness, the application provides a high-low tooth cutout bolt.

[0005] The application provides a high-low tooth cutout bolt, which adopts the following technical scheme:

[0006] A high-low tooth cutout bolt, comprising a bolt shank, the outer wall of the bolt shank is provided with low threads and high threads connected to each other, the edges of the high threads are provided with a plurality of equidistantly distributed notches, and a nut assembly is installed on the outer wall of the top of the bolt shank.

[0007] By adopting the above technical scheme, the stability of the bolt is effectively improved by arranging the high-low threads on the outer wall of the bolt shank, and the stability of the nut on the bolt is further improved by arranging the notches on the edges of the high threads and the high-low threads and the notches on the high threads, so that the looseness of the nut is effectively avoided to prevent the structure of the bolt connection from loosening.

[0008] Preferably, the nut assembly comprises a nut, a connecting column is fixedly connected to the outer wall of the bottom of the nut, the connecting column has a positive deformation structure in section, and a plurality of equidistantly distributed protruding teeth are fixedly connected to the outer wall of the bottom of the nut.

[0009] By adopting the above technical scheme, the stability of the bolt is further improved by arranging the protruding teeth on the nut, the looseness of the bolt is effectively avoided, and the connecting column on the nut facilitates the connection of the nut and the bolt shank.

[0010] Preferably, two symmetrically arranged openings are arranged on the inner wall of the connecting column, and a T-shaped limiting block is slidably connected to the inner wall of each of the two openings.

[0011] By adopting the technical scheme, the limiting blocks are conveniently installed through the openings on the connecting columns, and the connecting columns are conveniently connected to the bolt rods through the limiting blocks.

[0012] Preferably, the wedge-shaped plates are fixedly connected to the opposite sides of the limiting blocks.

[0013] By adopting the technical scheme, the limiting blocks are conveniently moved through the wedge-shaped plates.

[0014] Preferably, the same threaded rod is rotatably connected to the inner walls on the two sides of the connecting column, and the trapezoidal block is screwed to the outer wall of the threaded rod and is slidably connected to the inner wall of the connecting column.

[0015] By adopting the technical scheme, the trapezoidal block is conveniently slid in the connecting column through the rotation of the threaded rod.

[0016] Preferably, the sliding grooves are formed in the outer walls on the two sides of the trapezoidal block, and the wedge-shaped plates are slidably connected to the inner walls of the two sliding grooves.

[0017] By adopting the technical scheme, the wedge-shaped plates are conveniently slidably installed through the sliding grooves on the trapezoidal blocks, and the two limiting blocks are conveniently pulled through the wedge-shaped plates when the trapezoidal block moves.

[0018] Preferably, the circular groove is formed in the top outer wall of the nut, the rotating part is rotatably connected to the bottom inner wall of the circular groove, and one end of the transmission shaft of the rotating part is fixedly connected to the threaded rod.

[0019] By adopting the technical scheme, the rotating part is conveniently rotatably installed through the circular groove on the nut, and the threaded rod is directly rotated when the rotating part rotates.

[0020] Preferably, the rib groove is formed in the top outer wall of the bolt rod, the specifications of the rib groove and the connecting column are matched, the limiting grooves are symmetrically formed in the inner walls on the two sides of the rib groove, the specifications of the limiting grooves and the limiting blocks are matched, and the rubber pad is bonded to the bottom inner wall of the rib groove.

[0021] By adopting the technical scheme, the bolt rod is conveniently installed through the rib groove, the nut and the bolt rod are connected and installed by inserting the limiting blocks into the limiting grooves, and the connecting column and the bolt rod are conveniently buffered through the rubber pad.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. The application prevents the loosening of the bolt during use by opening high and low threads on the bolt shaft and notches on the edge of the high thread, and effectively prevents the loosening of the bolt during use by the cooperation between the high and low threads and the notches on the threads.

[0024] 2. The application sets a nut assembly on the bolt shaft, sets a connecting column and a rotating part in the nut assembly, and facilitates the disassembly and assembly of the nut by the cooperation between the connecting column and the rotating part, thereby facilitating the replacement of the nut when it is damaged, and the setting of the protruding teeth on the nut further improves the stability of the bolt connection. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The overall structure of the high and low tooth notch bolt of the embodiment of the application is shown in the figure.

[0026] Figure 2 The figure shows the structure of the nut assembly of the embodiment of the application.

[0027] Figure 3 The figure shows the top view structure of the nut of the embodiment of the application.

[0028] Figure 4 The figure shows the structure of the bolt shaft of the embodiment of the application.

[0029] Reference signs: 1, bolt shaft; 2, low thread; 3, high thread; 4, notch; 5, nut assembly; 6, nut; 7, protruding tooth; 8, connecting column; 9, threaded rod; 10, trapezoidal block; 11, wedge-shaped plate; 12, limiting block; 13, circular groove; 14, rotating part; 15, rib groove; 16, rubber pad. DETAILED DESCRIPTION

[0030] The following will be described in detail in combination with the accompanying Figures 1-4 The application will be further described in detail.

[0031] The embodiment of the application discloses a high and low tooth notch bolt.

[0032] Referring to Figures 1-3 A high and low tooth notch bolt, comprising a bolt shaft 1, the outer wall of the bolt shaft 1 is provided with a low thread 2 and a high thread 3 connected with each other, the edge of the high thread 3 is provided with a plurality of equidistantly distributed notches 4, and the bolt shaft 1 is provided with a nut assembly 5 on the top outer wall, the setting of the nut assembly 5 facilitates the disassembly and assembly of the bolt shaft 1, and the setting of the low thread 2 and the high thread 3 on the bolt shaft 1 can effectively prevent the nut from falling off in cooperation with the notches 4.

[0033] When in use, the stability of the bolt is effectively improved by arranging the high-low thread on the outer wall of the bolt rod 1, and the stability of the nut on the bolt is further improved by arranging the notch 4 on the edge of the high thread 3, effectively avoiding the loosening of the bolt connection structure caused by the loosening of the nut.

[0034] With reference to Figures 1-2 , the screw cap assembly 5 comprises a screw cap 6, and the bottom outer wall of the screw cap 6 is fixedly connected with a connecting column 8, and the cross section of the connecting column 8 is a positive deformation structure. The bottom outer wall of the screw cap 6 is fixedly connected with a plurality of equidistantly distributed protrusions 7. The inner wall of the connecting column 8 is provided with two symmetrically arranged openings, and the inner walls of the two openings are both slidably connected with a T-shaped limiting block 12. The opposite side outer walls of the two limiting blocks 12 are both fixedly connected with a wedge-shaped plate 11. The inner walls of the two sides of the connecting column 8 are both rotatably connected with a same threaded rod 9, and the outer wall of the threaded rod 9 is screwed with a trapezoidal block 10. The trapezoidal block 10 is slidably connected to the inner wall of the connecting column 8. The two side outer walls of the trapezoidal block 10 are both provided with a sliding groove. The two wedge-shaped plates 11 are respectively slidably connected to the inner walls of the two sliding grooves. The stability of the bolt is further improved by arranging the protrusions 7 on the screw cap 6, effectively avoiding the loosening of the bolt. The connecting column 8 on the screw cap 6 facilitates the connection of the screw cap 6 and the bolt rod 1. The openings on the connecting column 8 facilitate the installation of the limiting block 12. The arrangement of the limiting block 12 facilitates the connection of the connecting column 8 to the bolt rod 1. The wedge-shaped plate 11 and the limiting block 12 are connected, thereby facilitating the movement of the limiting block 12 driven by the wedge-shaped plate 11. The threaded rod 9 drives the trapezoidal block 10 to slide in the connecting column 8 when the threaded rod 9 rotates. The arrangement of the sliding groove on the trapezoidal block 10 facilitates the sliding installation of the wedge-shaped plate 11. The trapezoidal block 10 facilitates the action of the two limiting blocks 12 pulled by the wedge-shaped plate 11 when the trapezoidal block 10 moves.

[0035] With reference to Figures 3-4 , the top outer wall of the screw cap 6 is provided with a circular groove 13, and the bottom inner wall of the circular groove 13 is rotatably connected with a rotating part 14. One end of the transmission shaft of the rotating part 14 is fixedly connected to the threaded rod 9. The circular groove 13 arranged on the screw cap 6 facilitates the rotational installation of the rotating part 14. The rotating part 14 directly drives the threaded rod 9 to rotate when the rotating part 14 rotates. The top outer wall of the bolt rod 1 is provided with a ridge groove 15, and the specifications of the ridge groove 15 and the connecting column 8 are matched. The two side inner walls of the ridge groove 15 are both provided with symmetrically arranged limiting grooves, and the specifications of the limiting grooves and the limiting blocks 12 are matched. The bottom inner wall of the ridge groove 15 is bonded with a rubber pad 16. The ridge groove 15 on the bolt rod 1 facilitates the installation of the connecting column 8. The limiting block 12 is inserted into the limiting groove to connect and install the screw cap 6 and the bolt rod 1. The arrangement of the rubber pad 16 facilitates the buffering between the connecting column 8 and the bolt rod 1.

[0036] The implementation principle of the high-low tooth cutout bolt provided in the embodiment of the application is as follows: in use, the stability of the bolt is improved through the high-low thread provided on the bolt rod 1, and the notch 4 is provided on the high thread 3 on the bolt rod 1, so that the loosening of the nut on the bolt rod 1 is effectively avoided, the anti-loosening convex teeth 7 on the nut 6 further assist the stable connection of the bolt, when the nut 6 or the bolt rod 1 is damaged, the nut 6 or the bolt rod 1 can be replaced, and when the nut 6 or the bolt rod 1 is replaced, the nut 6 and the bolt rod 1 are first disassembled, when the nut 6 and the bolt rod 1 are disassembled, the rotating part 14 is first rotated, the rotating part 14 drives the threaded rod 9 to rotate when the rotating part 14 rotates, the threaded rod 9 drives the trapezoidal block 10 to move when the threaded rod 9 rotates, the two limiting blocks 12 are pulled to move towards each other in cooperation with the wedge-shaped plate 11 when the trapezoidal block 10 moves upwards, and the two limiting blocks 12 are accommodated into the connecting column 8, so that the bolt rod 1 is conveniently disassembled from the nut 6.

[0037] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A bolt with high and low thread cuts, comprising a bolt shank (1), characterized in that: The outer wall of the bolt rod (1) is provided with interconnected low threads (2) and high threads (3). The edges of the high threads (3) are provided with multiple equally spaced notches (4). A nut assembly (5) is installed on the top outer wall of the bolt rod (1).

2. The high / low thread cut bolt according to claim 1, characterized in that: The nut assembly (5) includes a nut (6), and a connecting post (8) is fixedly connected to the bottom outer wall of the nut (6), and the cross section of the connecting post (8) is a positive deformation structure. Multiple convex teeth (7) are fixedly connected to the bottom outer wall of the nut (6).

3. A high / low thread cut bolt according to claim 2, characterized in that: The inner wall of the connecting column (8) has two symmetrically arranged openings, and the inner walls of the two openings are slidably connected to T-shaped limiting blocks (12).

4. A high / low thread cut bolt according to claim 3, characterized in that: Both of the two limiting blocks (12) have wedge plates (11) fixedly connected to the outer walls on opposite sides.

5. A high / low thread cut bolt according to claim 4, characterized in that: The inner walls of both sides of the connecting column (8) are rotatably connected to the same threaded rod (9), and the outer wall of the threaded rod (9) is screwed with a trapezoidal block (10), which is slidably connected to the inner wall of the connecting column (8).

6. A high / low thread cut bolt according to claim 5, characterized in that: The trapezoidal block (10) has grooves on both outer walls, and the two wedge plates (11) are slidably connected to the inner walls of the two grooves respectively.

7. A high / low thread cut bolt according to claim 6, characterized in that: The top outer wall of the nut (6) is provided with a circular groove (13), and the bottom inner wall of the circular groove (13) is rotatably connected to a rotating part (14). One end of the drive shaft of the rotating part (14) is fixedly connected to the threaded rod (9).

8. A high / low thread cut bolt according to claim 7, characterized in that: The top outer wall of the bolt rod (1) is provided with a rib groove (15), and the specifications of the rib groove (15) match the specifications of the connecting column (8). The inner walls on both sides of the rib groove (15) are provided with symmetrically arranged limiting grooves, and the specifications of the limiting grooves match the specifications of the limiting block (12). The bottom inner wall of the rib groove (15) is bonded with a rubber pad (16).

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