CN216867247U

CN216867247U - Anti-rotation bolt with teeth

Info

Publication number: CN216867247U
Application number: CN202220127662.5U
Authority: CN
Inventors: 郑高林
Original assignee: Taizhou Yuantuo Machinery Co ltd
Current assignee: Taizhou Yuantuo Machinery Co ltd
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2022-07-01
Anticipated expiration: 2032-01-18

Abstract

The utility model provides an anti-rotation bolt with teeth, which comprises a nut, wherein a screw rod is arranged on one side end face of the nut, a placement cavity penetrating through the nut is formed in the center point of the nut, at least two limiting grooves communicated with the placement cavity are formed in the nut, an accommodating cavity is formed in one end, facing the nut, of the screw rod, trigger blocks are arranged in the placement cavity and the accommodating cavity, and at least two limiting rods matched with the limiting grooves are arranged on the outer peripheral side, located in the placement cavity, of each trigger block. According to the anti-rotation bolt with the teeth, due to the arrangement of the conical end face sliding plate, on one hand, friction between the bolt and the inner wall of the through hole is increased, the bolt is placed to rotate in the through hole, on the other hand, the conical tip of the conical end face is not in contact with the inner wall of the through hole, and the problems that the conical tip is abraded and the inner wall of the through hole is damaged when the conical tip of the existing conical end face is in contact with the inner wall are effectively solved.

Description

Anti-rotation bolt with teeth

Technical Field

The utility model belongs to the field of bolts, and particularly relates to an anti-rotation bolt with teeth.

Background

The bolt is a coupling mechanism of easily installing and dismantling, is often used for the connection between the plate to be fixed, and during the bolt installation, because the external diameter of work piece through-hole is greater than the diameter of bolt screw for during nut and the rotatory locking of bolt, the nut drives the bolt rotation easily, and then has influenced the connection efficiency of bolt.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a self-locking toothed anti-rotation bolt.

In order to achieve the above object, the present invention provides an anti-rotation bolt with teeth, which comprises a nut, a screw rod is arranged on one side end face of the screw cap, a mounting cavity penetrating through the screw cap is arranged at the central point of the screw cap, at least two limiting grooves communicated with the accommodating cavity are formed in the nut, an accommodating cavity is formed in one end, facing the nut, of the screw rod, the arrangement cavity and the containing cavity are internally provided with trigger blocks, the periphery of the trigger block positioned in the arrangement cavity is provided with at least two limiting rods matched with the limiting grooves, the trigger block with hold and be equipped with compression spring between the chamber, open on the screw rod at least two with hold the spout of chamber intercommunication, every sliding connection has the slide in the spout, every says that the slide orientation the one end of trigger block is equipped with the slope piece, the slide is kept away from the one end of trigger block is the toper setting.

Preferably, the plurality of limiting grooves are uniformly distributed on the outer peripheral side of the mounting cavity along the circumferential direction of the nut.

Preferably, the shape of the nut may be at least one of a triangle, a rectangle, a circle and a polygon, and the cross-sectional shape of the installation cavity is the same as the shape of the nut.

Preferably, the sliding grooves are uniformly distributed on the screw rod along the circumferential direction of the screw rod.

Preferably, an external thread is arranged on the outer peripheral side of the screw rod and is positioned on one side, away from the nut, of the sliding grooves.

Preferably, the taper angle of the end of the slide plate away from the trigger block is 45-60 °.

Preferably, the cross-sectional diameter of the part of the trigger block in the accommodating cavity is gradually reduced along the direction that the screw rod is far away from the screw cap.

In summary, compared with the prior art, the utility model has the following beneficial effects:

1. because the part that the trigger block is located and holds the intracavity diminishes along with the screw rod direction cross-section diameter that keeps away from the nut gradually, so along with the removal of trigger block, the periphery side of trigger block gradually with a plurality of sloping piece butt, along with the removal of trigger block, a plurality of sloping pieces of trigger block extrusion, promote a plurality of slides and slide respectively in a plurality of spouts through a plurality of sloping pieces, control a plurality of slides and extend to the outside of screw rod, the through-hole inner wall contact production extrusion of the cone end that makes the slide and work piece, and then increase the friction between bolt and work piece through-hole, avoid the rotation of bolt in the work piece through-hole.

2. Because the slope of the tapered end face of the sliding plate far away from the trigger block is set to be 45-60 degrees, on one hand, the contact area between the tapered end face and the workpiece through hole is increased, so that the friction between the tapered end face and the workpiece through hole is increased, further, the rotation of a bolt in the through hole is avoided, on the other hand, the contact between the tapered end face and the inner wall of the through hole is avoided, the condition that the tapered end face and the tapered end face directly contact the inner wall to cause the abrasion of the tapered end and damage the inner wall of the through hole is avoided.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a sectional view taken along the line a-a of fig. 1 according to the present invention.

Fig. 3 is a top sectional view of fig. 1 in accordance with the present invention.

10. A nut; 11. a screw; 12. an external thread; 13. a placement cavity; 14. a trigger block; 15. a limiting groove; 16. an accommodating chamber; 17. a compression spring; 18. a slide plate; 19. an inclined block.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

As shown in fig. 1-3, an anti-rotation bolt with teeth comprises a nut 10, a screw 11 is arranged on one side end face of the nut 10, external threads 12 are arranged on the outer peripheral side of the screw 11 away from the nut 10, and the nut 10 can be at least one of triangular, rectangular, circumferential and polygonal in shape.

In this embodiment, a mounting cavity 13 penetrating through the nut 10 is disposed at a central point of the nut 10, a cross-sectional shape of the mounting cavity 13 is the same as that of the nut 1101, an accommodating cavity 16 communicated with the mounting cavity 13 is disposed on an end surface of the screw 11 facing the nut 10, a trigger block 14 is slidably disposed in the mounting cavity 13 and the accommodating cavity 16, a cross-sectional diameter of a portion of the trigger block 14 located in the accommodating cavity 16 gradually decreases along a direction in which the screw 11 is away from the nut 10, a compression spring 17 is disposed between the trigger block 14 and an inner wall of the accommodating cavity 16, at least two sliding grooves are disposed on a portion of the screw 11 located between the nut 10 and the external thread 12, a plurality of sliding grooves are equidistantly distributed on the screw 11 along a circumferential direction of the screw 11, a sliding plate 18 is slidably connected in each sliding groove, an inclined block 19 matched with the trigger block 14 is disposed at an end of each sliding plate 18 facing the trigger block 14, an end surface of each sliding plate 18 facing the trigger block 14 is tapered, the inclination angle of the cone is 45-60 degrees.

Furthermore, at least two limiting grooves 15 communicated with the placement cavity 13 are formed in the nut 10 along the circumferential direction of the nut 10, at least two limiting rods matched with the limiting grooves 15 are arranged on the outer peripheral side of the part, located in the placement cavity 13, of the trigger block 14, and the number of the limiting rods is equal to that of the limiting grooves 15.

When the bolt is used for connecting workpieces, the screw 11 is placed in a through hole of the workpiece, the trigger block 14 is placed in the arrangement cavity 13 and the accommodating cavity 16, the limiting rods are matched with the limiting grooves 15 in a one-to-one correspondence manner, the limiting rods are embedded in the limiting grooves 15, the trigger block 14 stably enters the arrangement cavity 13, the trigger block 14 is extruded towards the screw 11, and the trigger block 14 gradually slides towards the direction close to the accommodating cavity 16;

because the section diameter of the part of the trigger block 14 in the accommodating cavity 16 is gradually reduced along with the direction that the screw rod 11 is far away from the screw cap 10, the peripheral side of the trigger block 14 is gradually abutted against the inclined blocks 19 along with the movement of the trigger block 14, the trigger block 14 extrudes the inclined blocks 19 along with the movement of the trigger block 14, the inclined blocks 19 push the sliding plates 18 to respectively slide in the sliding grooves, the sliding plates 18 are controlled to extend towards the outside of the screw rod 11, so that the conical ends of the sliding plates 18 are contacted with the inner wall of the through hole of the workpiece to generate extrusion, the friction between the bolt and the through hole of the workpiece is further increased, and the rotation of the bolt in the through hole of the workpiece is avoided;

the conical end face of the sliding plate 18, which is far away from the trigger block 14, is inclined to be set to be 45-60 degrees, so that on one hand, the contact area between the conical end face and the workpiece through hole is increased, the friction between the conical end face and the workpiece through hole is increased, further, the rotation of a bolt in the through hole is avoided, and on the other hand, the situation that the conical end face directly contacts the inner wall of the through hole to cause the abrasion of the conical end face and damage to the inner wall of the through hole is avoided through the contact between the conical end face and the inner wall of the through hole;

the positions of the bolts are limited by the contact of the conical ends of the sliding plates 18 on the inner wall of the through hole of the workpiece, so that the stability of the bolts in the through hole is ensured, and the condition that the nuts drive the bolts to rotate when the nuts are matched with the bolts is avoided.

It is to be understood that the described embodiments are merely a few embodiments of the utility model and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a take tooth to prevent changeing bolt, includes nut (10), a side end face of nut (10) is equipped with screw rod (11), its characterized in that: the center point of the nut (10) is provided with a placement cavity (13) penetrating through the nut (10), at least two limiting grooves (15) communicated with the placement cavity (13) are formed in the nut (10), one end, facing the nut (10), of the screw rod (11) is provided with a containing cavity (16), a trigger block (14) is arranged in the placement cavity (13) and the containing cavity (16), at least two limiting rods matched with the limiting grooves (15) are arranged on the outer peripheral side, located in the placement cavity (13), of the trigger block (14), a compression spring (17) is arranged between the trigger block (14) and the containing cavity (16), at least two sliding grooves communicated with the containing cavity (16) are formed in the screw rod (11), each sliding groove is connected with a sliding plate (18) in a sliding mode, one end, facing the trigger block (14), of each sliding plate (18) is provided with an inclined block (19), the end of the sliding plate (18) far away from the trigger block (14) is arranged in a conical shape.

2. An anti-rotation bolt with teeth according to claim 1, characterized in that: the limiting grooves (15) are uniformly distributed on the outer peripheral side of the mounting cavity (13) along the circumferential direction of the screw cap (10).

3. An anti-rotation bolt with teeth according to claim 1, characterized in that: the shape of the screw cap (10) can be at least one of triangle, rectangle, circumference and polygon, and the cross section of the mounting cavity (13) has the same shape as the screw cap (10).

4. An anti-rotation bolt with teeth according to claim 1, characterized in that: the sliding grooves are uniformly distributed on the screw rod (11) along the circumferential direction of the screw rod (11).

5. An anti-rotation bolt with teeth according to claim 1, characterized in that: and an external thread (12) is arranged on the outer peripheral side of the screw rod (11), and the external thread (12) is positioned on one side, away from the screw cap (10), of the sliding grooves.

6. The toothed anti-rotation bolt according to claim 1, characterized in that: the taper angle of one end of the sliding plate (18) far away from the trigger block (14) is 45-60 degrees.

7. The toothed anti-rotation bolt according to claim 1, characterized in that: the section of the trigger block (14) in the accommodating cavity (16) is gradually reduced in diameter along the direction that the screw rod (11) is far away from the screw cap (10).