CN210715515U

CN210715515U - Anti-loosening bolt

Info

Publication number: CN210715515U
Application number: CN201921684880.3U
Authority: CN
Inventors: 曲伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-06-09
Anticipated expiration: 2029-10-08

Abstract

An anti-loosening bolt relates to the technical field of bolts. It includes: screw rod and nut, locking bolt still includes: the anti-loosening piece is assembled on the screw rod, is inserted into the nut and is used for tightly abutting against the nut when the nut is loosened so as to avoid the loosening phenomenon. A slot is formed in one side, close to the anti-loosening piece, of the nut, and a threaded portion matched with the screw is formed in one side, far away from the anti-loosening piece, of the nut; one side of the anti-loosening piece, which is close to the slot, is provided with an inserting part, the inserting part is used for being inserted and assembled with the slot, and one side of the anti-loosening piece, which is far away from the inserting part, is provided with a rotating head used for screwing the anti-loosening piece. Adopt above-mentioned technical scheme's locking bolt that moves, it is through the locking piece that loosens that sets up for when not hard up, with its extrusion to screw rod one side, make its inner wall support tightly on the screw rod, thereby make the nut move tighter and tighter, have simple structure, design benefit, easy dismounting, locking effectual advantage.

Description

Anti-loosening bolt

Technical Field

The utility model relates to a bolt technical field, concretely relates to locking bolt that moves.

Background

The bolt is a fastener composed of a bolt head and a screw (a cylinder with external threads), and the fastener is used for fastening and connecting two mechanical parts with through holes. If the bolt is screwed out, the two parts can be separated, so that the bolt connection belongs to detachable connection and is widely applied to the fields of plate fastening, equipment assembly, part connection and the like.

When mechanical equipment runs, mechanical vibration is not generated, long-term mechanical vibration causes the bolt to shake, thread abrasion is caused, the fastening effect of the bolt is poor, the working performance and stability of the mechanical equipment are influenced, particularly the machining precision of some precision equipment is influenced, and the phenomenon that the bolt is separated from a threaded hole possibly occurs, so that mechanical faults are caused. Therefore, a bolt capable of effectively preventing the occurrence of the loosening phenomenon is urgently to be excavated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's defect and not enough, provide an anti-looseness bolt, its through the anti-looseness spare that sets up for the nut is when not hard up, extrudeing it to screw rod one side, makes its inner wall support tightly on the screw rod, thereby makes the nut move tighter and tighter more, has simple structure, design benefit, easy dismounting, locking effectual advantage.

In order to achieve the above object, the utility model adopts the following technical scheme: a locking bolt comprising: screw rod and nut, locking bolt still includes: the anti-loosening piece is assembled on the screw rod, is inserted into the nut and is used for tightly abutting against the nut when the nut is loosened so as to avoid the loosening phenomenon.

A slot is formed in one side, close to the anti-loosening piece, of the nut, and a threaded portion matched with the screw is formed in one side, far away from the anti-loosening piece, of the nut; one side of the anti-loosening piece, which is close to the slot, is provided with an inserting part, the inserting part is used for being inserted and assembled with the slot, and one side of the anti-loosening piece, which is far away from the inserting part, is provided with a rotating head used for screwing the anti-loosening piece.

The rotating head and the inserting part are both provided with internal threads assembled with the screw threads.

The insertion part is provided with a rectangular notch so that the insertion part can elastically deform; after the inserting part is inserted into the slot, when the nut is loosened, the nut moves towards one side of the anti-loosening piece, so that the inner wall of the slot abuts against the inserting part, and the inserting part abuts against the screw rod, and the nut is prevented from being loosened.

The whole inserting part is in an annular round table shape, and the diameter of the section of the inserting part close to one side of the rotating head is larger than the diameter of the section of the inserting part close to one side of the nut.

The side wall of the slot is an annular wedge surface, and the wall thickness of the notch is smaller than that of the bottom of the slot.

Six rectangular gaps are uniformly distributed in an annular shape, and the inserting part and the rotating head are integrally formed.

The screw rod, the nut and the anti-loosening piece are all metal pieces.

After the technical scheme is adopted, the utility model discloses beneficial effect does:

1. through locking piece on the screw rod to be provided with the grafting portion that can produce slight elastic deformation again on the locking piece, make the nut when not hard up, extrude grafting portion to screw rod one side, make grafting portion inner wall support tightly on the screw rod, thereby make the nut move tighter more, have design benefit, locking effectual advantage.

2. The plug-in portion adopts tip radial dimension to be less than the design of root radial dimension, and simultaneously, the design that adopts notch wall thickness to be less than the tank bottom wall thickness is established to the inserting groove for plug-in portion not only can insert the slot more easily in, can make the nut in addition, the extrusion force between crescent plug-in portion and the screw rod, and then effectively promote the stability of fastening between nut and the screw rod, guaranteed the locking effect of bolt.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a top view corresponding to FIG. 1;

FIG. 3 is a cross-sectional view taken along section line A-A of FIG. 2;

FIG. 4 is an overall exploded view of the present embodiment;

FIG. 5 is a schematic view of the structure of the nut in this example;

fig. 6 is a schematic structural view of the anti-loosening element in this embodiment.

Description of reference numerals: 1. a screw; 2. a nut; 21. a slot; 22. a threaded portion; 3. an anti-loosening element; 31. a plug-in part; 32. rotating the head; 33. a rectangular notch.

Detailed Description

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

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment as required without making a contribution, but all the embodiments are protected by the patent law within the scope of the claims of the present invention.

The embodiment relates to a locking bolt that moves, includes: a screw 1 and a nut 2. It is noted that the anti-loosening bolt also comprises an anti-loosening element 3. The anti-loosening element 3 is assembled on the screw rod 1 and is inserted and assembled with the nut 2. The anti-loosening piece 3 is used for tightly abutting against the nut 2 when the nut 2 is loosened, so that the loosening phenomenon between the nut 2 and the screw rod 1 is avoided.

Specifically, a slot 21 is provided on the nut 2 on a side close to the anti-loosening element 3, and a threaded portion 22 engaged with the screw 1 is provided on the nut 2 on a side away from the anti-loosening element 3. One side of the anti-loosening element 3 close to the slot 21 is provided with an insertion part 31, and the insertion part 31 is used for being inserted and assembled with the slot 21. Preferably, the locking member 3 is provided with a rotating head 32 on a side away from the insertion part 31, and the rotating head 32 is used for screwing the locking member 3 so that the locking member 3 is tightly assembled with the screw 1.

Preferably, the rotary head 32 and the insertion part 31 are each provided with an internal thread for screw-fitting with the screw 1.

Further, the insertion part 31 is provided with a rectangular notch 33, so that the insertion part 31 can be elastically deformed. After the insertion part 31 is inserted into the slot 21, when the nut 2 is loosened, the nut 2 moves towards one side of the anti-loosening element 3, so that the inner wall of the slot 21 abuts against the insertion part 31, and further the insertion part 31 abuts against the screw rod 1, and the nut 2 is prevented from being loosened.

Preferably, the whole of the insertion part 31 is in the shape of an annular truncated cone, and the diameter of the section of the insertion part 31 on the side close to the rotating head 32 is larger than that on the side close to the nut 2. The side wall of the slot 21 is a circular wedge surface, and the wall thickness of the notch is smaller than that of the bottom of the slot. The inserting part 31 and the slot 21 are arranged in such a way, so that the inserting part 31 can be inserted into the slot 21 more easily, the extrusion force between the inserting part 31 and the screw rod 1 can be increased gradually when the nut 2 is used, the fastening stability between the nut 2 and the screw rod 1 is effectively improved, and the anti-loosening effect of the bolt is ensured.

Preferably, six rectangular notches 33 are distributed in a uniform ring shape, and the insertion portion 31 and the rotating head 32 are integrally formed. The screw 1, the nut 2 and the anti-loosening piece 3 are all metal pieces.

The working principle of the present embodiment is roughly as follows: when the anti-loosening bolt is used, a part to be locked is locked by matching the screw rod 1 with the nut 2, and the slot 21 is ensured to face outwards when the nut 2 is assembled; then, the inserting part 31 on the anti-loosening element 3 faces the slot 21, and the anti-loosening element 3 is assembled on the screw rod 1 through the matching of the inserting part 31 and the internal thread arranged in the rotating head 32 and the screw rod 1; finally, the anti-loosening element 3 continues to rotate until the insertion part 31 is tightly matched with the slot 21, and the installation of the bolt is completed; when nut 2 is not hard up, nut 2 moves to the outside and extrudes grafting portion 31 to screw rod 1 one side for grafting portion 31 inner wall supports tightly on screw rod 1, thereby makes nut 2 move tighter and tighter, has simple structure, design benefit, easy dismounting, locking effectual advantage.

The above description is only for the purpose of illustration and not limitation, and other modifications or equivalent replacements made by those skilled in the art to the technical solution of the present invention should be covered by the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A locking bolt comprising: screw rod (1) and nut (2), its characterized in that still includes: the anti-loosening piece (3) is assembled on the screw rod (1), is spliced with the nut (2), and is used for tightly abutting against the nut (2) when the nut (2) is loosened so as to avoid the loosening phenomenon.

2. The anti-loosening bolt according to claim 1, wherein a slot (21) is formed in the nut (2) on a side close to the anti-loosening element (3), and a threaded portion (22) engaged with the screw (1) is formed in the nut (2) on a side away from the anti-loosening element (3);

one side, close to the slot (21), of the anti-loosening element (3) is provided with an insertion part (31), the insertion part (31) is used for being assembled with the slot (21) in an insertion mode, and a rotating head (32) used for screwing the anti-loosening element (3) is arranged on one side, far away from the insertion part (31), of the anti-loosening element (3).

3. The anti-loosening bolt according to claim 2, wherein the rotating head (32) and the insertion part (31) are provided with internal threads which are threadedly assembled with the threaded rod (1).

4. A locking bolt according to claim 3 characterised in that the spigot (31) is provided with a rectangular indentation (33) to allow the spigot (31) to deform elastically; after the inserting part (31) is inserted into the slot (21), when the nut (2) is loosened, the nut (2) moves towards one side of the anti-loosening piece (3), so that the inner wall of the slot (21) abuts against the inserting part (31), and the inserting part (31) abuts against the screw rod (1) to prevent the nut (2) from being loosened.

5. A locking bolt according to claim 4, characterised in that the spigot portion (31) is generally circular truncated in the shape of a ring, and the cross-sectional diameter of the spigot portion (31) on the side adjacent the rotary head (32) is greater than the diameter on the side adjacent the nut (2).

6. The anti-loosening bolt according to claim 5, wherein the side wall of the insertion groove (21) is an annular wedge surface, and the wall thickness of the notch is smaller than the wall thickness of the groove bottom.

7. The anti-loosening bolt as claimed in claim 6, wherein six rectangular notches (33) are distributed in a uniform ring shape, and the insertion portion (31) and the rotating head (32) are integrally formed.

8. Anti-loosening bolt according to claim 7, characterised in that the threaded rod (1), the nut (2) and the anti-loosening element (3) are all metal elements.