CN213206251U

CN213206251U - Bolt with adjustable screw thread

Info

Publication number: CN213206251U
Application number: CN202021506535.3U
Authority: CN
Inventors: 李荣杰
Original assignee: Jiangsu Jiagu Electric Technology Co ltd
Current assignee: Jiangsu Jiagu Electric Technology Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-05-14
Anticipated expiration: 2030-07-27

Abstract

The utility model provides a bolt with adjustable screw thread, including bolt head and double-screw bolt, bolt head one side is the hexagon socket head cap groove, the opposite side is equipped with the double-screw bolt, the equidistant second spacing hole that is equipped with on the double-screw bolt, double-screw bolt axle center department is equipped with first spacing hole, first spacing downthehole first spacing post that is equipped with, be equipped with the thread bush on the double-screw bolt, the thread bush is equipped with spacing recess in the thread bush, be equipped with in the spacing recess with spacing recess matched with stopper, the stopper includes the stopper main part, stopper main part lower part is equipped with the spacing post of second, the spacing post diameter of second is the same with the spacing hole diameter of second, the spacing post length of second is greater than the double-screw bolt radius, be less than the double: the position of the threaded sleeve on the screw rod can be adjusted and fixed, so that the fastening distance between the nut and the bolt head can be adjusted to any length.

Description

Bolt with adjustable screw thread

Technical Field

The utility model relates to a relevant technical field of fastener specifically is a bolt with adjustable screw thread.

Background

Bolt: mechanical parts, cylindrical threaded fasteners fitted with nuts. A fastener consisting of a head part and a screw (a cylinder with external threads) needs to be matched with a nut and is used for fastening and connecting two parts with through holes. This form of connection is known as a bolted connection. If the nut is unscrewed from the bolt, the two parts can be separated, so that the bolt connection belongs to detachable connection.

When the bolt is used, as the screw rod is not completely provided with the threads, the effect that the nut is screwed at the end closest to the bolt head cannot be fastened frequently.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The to-be-solved technical problem of the utility model is: the screw is not all threaded, and the effect of tightening the nut by screwing the end closest to the bolt head is often not achieved.

(II) technical scheme

In order to solve the above problem, the utility model provides a following technical scheme: including bolt head and double-screw bolt, bolt head one side is interior hexagonal groove, the opposite side is equipped with the double-screw bolt, the equidistant spacing hole of second that is equipped with on the double-screw bolt, double-screw bolt axle center department is equipped with first spacing hole, be equipped with first spacing post in the first spacing downthehole, be equipped with the thread bush on the double-screw bolt, the thread bush outward appearance is equipped with the screw thread, be equipped with spacing recess on the thread bush, be equipped with the stopper with spacing recess matched with in the spacing recess, the stopper includes the stopper main part, stopper main part lower part is equipped with the spacing post of second, the spacing post diameter of second is the same with the spacing hole diameter of second, the spacing post length of second is greater than the double-screw bolt.

Furthermore, the number of the second limiting columns is at least 2, and the distance between the axle centers of the adjacent second limiting columns is the same as that between the axle centers of the adjacent second limiting holes, so that the stability of the limiting blocks is improved.

Furthermore, a chamfer is arranged at one end, away from the bolt head, of the stud, so that the stud is more convenient to sleeve the nut, and the damage to the thread of the nut caused by the most front end of the bolt is prevented.

Further, the thread sleeve surface threads are matched with the threads on the upper surface of the limiting block main body, and the thread sleeve surface threads are matched with the threads on the upper surface of the limiting block main body, so that screwing is smooth and convenient.

Furthermore, the outer surface of the first limiting column is provided with threads, and the inner wall of the first limiting hole and the inner wall of the through hole are provided with threads matched with the first limiting column, so that the first limiting column is prevented from sliding off, and the falling off of the limiting block is avoided.

(III) advantageous effects

The beneficial effects of the utility model reside in that: the device structure is convenient, easy operation, and the practicality is strong, and through the adjustable fixed of threaded sleeve position on the screw rod, it is adjustable to arbitrary length to realize fastening distance between nut and the bolt head.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a schematic structural view of each component of the present invention;

FIG. 3 is a schematic perspective view of the present invention;

in the figure: 1-bolt head, 2-stud, 3-second limit hole, 4-first limit hole, 5-first limit column, 6-thread bush, 7-limit groove and 8-limit block;

8 a-a limiting block main body, 8 b-a second limiting column and 8 c-a through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and the described embodiments are only some embodiments, not all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides the following technical solutions: including bolt head 1 and double-

screw bolt

2, 1 one side of bolt head is the hexagon socket head cap, the opposite side is equipped with double-screw bolt 2, equidistant second spacing hole 3 that is equipped with on double-

screw bolt

2, 2 axle centers of double-screw bolt department is equipped with first spacing hole 4, be equipped with first spacing post 5 in the first spacing hole 4, be equipped with thread bush 6 on the double-screw bolt 2, thread bush 6 outward appearance is equipped with the screw thread, be equipped with spacing recess 7 on the thread bush 6, be equipped with stopper 8 with spacing recess 7 matched with in the spacing recess 7, stopper 8 includes stopper main part 8a, stopper main part 8a lower part is equipped with the spacing post 8b of second, the spacing post 8b diameter of second is the same with the spacing hole 3 diameter of second, the spacing post 8b length of second is greater than double-screw bolt 2 radius, be less than double-screw bolt 2 diameter.

Furthermore, the number of the second limiting columns 8b is at least 2, and the distance between the axle centers of two adjacent second limiting columns 8b is the same as the distance between the axle centers of two adjacent second limiting holes 3, so that the stability of the limiting blocks 8 is improved; a chamfer is arranged at one end of the stud 2, which is far away from the bolt head 1, so that the stud 2 is more convenient to sleeve on the nut, and the damage to the nut thread caused by the most front end of the stud 2 is prevented; the threads on the outer surface of the threaded sleeve 6 are matched with the threads on the upper surface of the limiting block main body 8a, and the threads are matched with each other, so that the screwing is smoother and more convenient; the outer surface of the first limiting column 5 is provided with threads, and the inner wall of the first limiting hole 4 and the inner wall of the through hole 8c are provided with threads matched with the first limiting column 5, so that the first limiting column 5 is prevented from sliding down to cause the falling of the limiting block 8.

During the use, confirm the part both ends distance that needs the fastening earlier, then adjust threaded sleeve 6 to suitable distance, ensure that the distance between threaded sleeve 6 foremost and bolt head 1 is less than the part both ends distance that needs the fastening, then insert spacing recess 7 with stopper 8 in, spacing post 8b of second inserts in spacing hole 3 of second simultaneously, then twist first spacing post 5 soon to first spacing 4 insides in the hole, reach the fixed effect of bolt, screw up through the nut on the bolt and can reach fastening effect.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A bolt with adjustable screw thread which characterized in that: the bolt comprises a bolt head (1) and a stud (2), wherein one side of the bolt head (1) is provided with an inner hexagonal groove, the other side of the bolt head is provided with the stud (2), the stud (2) is provided with second limiting holes (3) at equal intervals, the axle center of the stud (2) is provided with a first limiting hole (4), a first limiting column (5) is arranged in the first limiting hole (4), the stud (2) is provided with a thread sleeve (6), the outer surface of the thread sleeve (6) is provided with threads, the thread sleeve (6) is provided with a limiting groove (7), a limiting block (8) matched with the limiting groove (7) is arranged in the limiting groove (7), the limiting block (8) comprises a limiting block main body (8a), the lower part of the limiting block main body (8a) is provided with a second limiting column (8b), and the diameter of the second limiting column (8b) is the same as that of the second limiting hole, the length of the second limiting column (8b) is larger than the radius of the stud (2) and smaller than the diameter of the stud (2), and a through hole (8c) matched with the first limiting column (5) is formed in the second limiting column (8 b).

2. A thread adjustable bolt as defined in claim 1, wherein: the number of the second limiting columns (8b) is at least 2, and the distance between the shaft centers of the adjacent second limiting columns (8b) is the same as that between the shaft centers of the adjacent second limiting holes (3).

3. A thread adjustable bolt as defined in claim 1, wherein: and a chamfer is arranged at one end of the stud (2) far away from the bolt head (1).

4. A thread adjustable bolt as defined in claim 1, wherein: the thread on the outer surface of the thread sleeve (6) is matched with the thread on the upper surface of the limiting block main body (8 a).

5. A thread adjustable bolt as defined in claim 1, wherein: the outer surface of the first limiting column (5) is provided with threads, and the inner wall of the first limiting hole (4) and the inner wall of the through hole (8c) are provided with threads matched with the first limiting column (5).