CN216788965U

CN216788965U - Bolt and nut combined fastener

Info

Publication number: CN216788965U
Application number: CN202122813141.3U
Authority: CN
Inventors: 唐凯杰
Original assignee: Zhejiang Morgan Xiongdi Technology Co ltd
Current assignee: Zhejiang Morgan Xiongdi Technology Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-06-21
Anticipated expiration: 2031-11-17

Abstract

The utility model discloses a bolt and nut combined fastener which comprises a bolt, an external thread column, a first limiting groove, a non-magnetic nut, an annular groove, limiting through holes, a limiting rod, a non-magnetic ball, a magnetic limiting ring and a second limiting groove. The utility model enables the two states of the non-magnetic ball clamped into the first limit groove and the magnetic ball clamped into the second limit groove to be freely switched by rotating the non-magnetic nut and the magnetic limit ring.

Description

Bolt and nut combined fastener

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of fasteners, in particular to the technical field of bolt and nut combined fasteners.

[ background ] A method for producing a semiconductor device

The bolt is a mechanical part and is a cylindrical threaded fastener matched with a nut. 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. The conventional bolt and nut combination is unstable in connection, and the bolt and the nut are easy to loosen.

[ Utility model ] content

The utility model aims to solve the problems in the prior art and provides a bolt and nut combined fastener which can ensure that the connection between bolts and nuts is stable and the bolts and nuts are not easy to loosen.

In order to achieve the purpose, the utility model provides a bolt and nut combined fastener, which comprises a bolt, an external thread column, a first limiting groove, a non-magnetic nut, an annular groove, a limiting through hole, a limiting rod, a non-magnetic ball, a magnetic limiting ring and a second limiting groove, wherein the lower end of the bolt is provided with the vertically arranged external thread column, the outer wall of the external thread column is provided with a plurality of axially arranged first limiting grooves, the external thread column is screwed with the adaptive non-magnetic nut, the outer side wall of the non-magnetic nut is provided with the coaxial annular groove, the bottom of the annular groove is provided with a plurality of radially arranged limiting through holes, the limiting through holes are in one-to-one correspondence with the first limiting grooves, each limiting through hole is internally provided with a radially arranged limiting rod, the two ends of the limiting rod are respectively provided with the non-magnetic ball and the magnetic ball, the non-magnetic ball is in one-to-one correspondence with the first limiting grooves, and the coaxial magnetic limiting rings are arranged in the annular groove, the annular groove and the magnetic limiting ring are matched, a plurality of second limiting grooves which are axially arranged are arranged on the inner annular wall of the magnetic limiting ring, and the second limiting grooves correspond to the magnetic balls one by one.

Preferably, the horizontal cross section of the first limit groove is arc-shaped, and the first limit groove axially penetrates through the upper end face and the lower end face of the external threaded column.

Preferably, the horizontal cross section of the second limit groove is arc-shaped, and the second limit groove axially penetrates through the upper end face and the lower end face of the magnetic limit ring.

Preferably, the magnetic limiting ring freely rotates in the annular groove, and when the non-magnetic ball is clamped in the first limiting groove, the maximum radial length from the magnetic ball to the axis of the external thread column is equal to the radius of the inner ring of the annular groove; when the magnetic ball is clamped into the second limiting groove, the minimum radial length from the non-magnetic ball to the axis of the external thread column is equal to the radius of the inner ring of the non-magnetic nut.

Preferably, the non-magnetic force ball, the first limiting groove, the magnetic force ball, the second limiting groove, the limiting through hole and the limiting rod are uniformly distributed in a circumferential array by taking the axis of the external thread column as the center of a circle.

Preferably, the upper end face and the lower end face of the magnetic limiting ring are both provided with an anti-skidding rubber ring.

The utility model has the beneficial effects that: according to the utility model, through rotating the non-magnetic nut and the magnetic limiting ring, the two states of clamping the non-magnetic ball into the first limiting groove and clamping the magnetic ball into the second limiting groove can be freely switched, the limiting structures of the bolt and the nut are simple, the operation is convenient, the connection between the bolt and the nut is stable, and the bolt and the nut are not easy to loosen; the anti-skid rubber ring prevents the magnetic limiting ring from easily rotating in the annular groove, so that the limiting structure of the bolt and the nut is more stable; the non-magnetic ball and the first limiting groove with the arc-shaped horizontal section are matched, and when the non-magnetic nut is disassembled, the non-magnetic ball can be easily pushed out of the first limiting groove by rotating the non-magnetic nut; the magnetic ball and the second limiting groove with the arc-shaped horizontal section are matched, and when the non-magnetic nut is installed, the magnetic ball can be easily pushed out of the second limiting groove by rotating the magnetic limiting ring.

The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.

[ description of the drawings ]

FIG. 1 is a front view of a bolt and nut assembly fastener of the present invention;

FIG. 2 is a top sectional view of a bolt and nut assembly fastener of the present invention.

[ detailed description ] embodiments

Referring to fig. 1 and 2, the bolt and nut combined fastener of the utility model comprises a bolt 1, an external threaded column 11, a first limit groove 111, a non-magnetic nut 2, an annular groove 21, limit through holes 211, a limit rod 212, a non-magnetic ball 2121, a magnetic ball 2122, a magnetic limit ring 22 and a second limit groove 221, wherein the external threaded column 11 is vertically arranged at the lower end of the bolt 1, the first limit grooves 111 which are axially arranged are arranged on the outer wall of the external threaded column 11, the non-magnetic nuts 2 which are adapted to the external threaded column 11 are screwed on the outer threaded column 2, the coaxial annular groove 21 is arranged on the outer side wall of the non-magnetic nut 2, a plurality of limit through holes 211 which are radially arranged are arranged at the bottom of the annular groove 21, the limit through holes 211 correspond to the first limit grooves 111 one by one, a radially arranged limit rod 212 is arranged in each limit through hole 211, and the non-magnetic ball 2121, the second limit groove 221 and the third limit groove 221 are arranged at two ends of the limit rod respectively, Magnetic balls 2122 and non-magnetic balls 2121 correspond to the first limiting grooves 111 one by one, coaxial magnetic limiting rings 22 are arranged in the annular groove 21, the annular groove 21 and the magnetic limiting rings 22 are adapted, a plurality of second limiting grooves 221 which are axially arranged are arranged on the inner annular wall of the magnetic limiting ring 22, the second limiting grooves 221 correspond to the magnetic balls 2122 one by one, the horizontal cross section of the first limiting groove 111 is circular arc, the first limiting groove 111 axially penetrates through the upper end face and the lower end face of the external threaded column 11, the horizontal cross section of the second limiting groove 221 is circular arc, the second limiting groove 221 axially penetrates through the upper end face and the lower end face of the magnetic limiting ring 22, the magnetic limiting ring 22 freely rotates in the annular groove 21, and when the non-magnetic balls 2121 are clamped in the first limiting grooves 111, the maximum radial length from the magnetic balls 2122 to the axis of the external threaded column 11 is equal to the inner annular radius of the annular groove 21; when the magnetic ball 2122 is clamped into the second limiting groove 221, the minimum radial length from the non-magnetic ball 2121 to the axis of the external threaded column 11 is equal to the radius of the inner ring of the non-magnetic nut 2, the non-magnetic ball 2121, the first limiting groove 111, the magnetic ball 2122, the second limiting groove 221, the limiting through hole 211 and the limiting rod 212 are all uniformly distributed in a circumferential array manner with the axis of the external threaded column 11 as the center of a circle, and the upper end surface and the lower end surface of the magnetic limiting ring 22 are both provided with an anti-slip rubber ring 201.

The working process of the utility model is as follows:

in the working process of the bolt-nut combined fastener, the magnetic limiting ring 22 is rotated, the second limiting groove 221 corresponds to the magnetic balls 2122 one by one, the magnetic balls 2122 are sucked into the second limiting groove 221, the non-magnetic nut 2 is unscrewed from the external thread column 11, the external thread column 11 passes through the mounting hole, the non-magnetic nut 2 is screwed on the external thread column 11, the non-magnetic balls 2121 correspond to the first limiting groove 111 one by one, the magnetic limiting ring 22 is rotated, the second limiting groove 221 is staggered with the magnetic balls 2122, the non-magnetic balls 2121 and the first limiting groove 111 are pushed into the corresponding first limiting groove 111, when the bolt-nut combined fastener is disassembled, the magnetic limiting ring 22 is rotated, the second limiting groove 221 corresponds to the magnetic balls 2122 one by one, the non-magnetic nut 2 is rotated, the non-magnetic balls 2121 are pushed out of the first limiting groove 111 under the double action of magnetic force between the non-magnetic nut 2 screwing and the magnetic limiting ring 22 and the magnetic balls 2122, the magnetic ball 2122 enters and is attracted into the second retaining groove 221.

According to the utility model, by rotating the non-magnetic nut 2 and the magnetic limiting ring 22, the two states of clamping the non-magnetic ball 2121 into the first limiting groove 111 and clamping the magnetic ball 2122 into the second limiting groove 221 can be switched freely, the limiting structure of the bolt and the nut is simple, the operation is convenient, the connection between the bolt and the nut is stable, and the bolt and the nut are not easy to loosen; the anti-slip rubber ring 201 prevents the magnetic limiting ring 22 from easily rotating in the annular groove 21, so that the limiting structure of the bolt and the nut is more stable; the non-magnetic ball 2121 is engaged with the first limit groove 111 having an arc-shaped horizontal cross section, and when the non-magnetic nut 2 is removed, the non-magnetic ball 2121 can be easily pushed out of the first limit groove 111 by rotating the non-magnetic nut 2; the magnetic ball 2122 is engaged with the second stopper groove 221 having an arc-shaped horizontal cross section, and when the non-magnetic nut 2 is mounted, the magnetic ball 2122 can be easily pushed out of the second stopper groove 221 by rotating the magnetic stopper ring 22.

The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a bolt and nut combined fastener which characterized in that: comprises a bolt (1), an external thread column (11), a first limit groove (111), a non-magnetic nut (2), an annular groove (21), limit through holes (211), a limit rod (212), a non-magnetic ball (2121), a magnetic ball (2122), a magnetic limit ring (22) and a second limit groove (221), wherein the external thread column (11) is vertically arranged at the lower end of the bolt (1), a plurality of axially arranged first limit grooves (111) are arranged on the outer wall of the external thread column (11), the non-magnetic nut (2) which is adapted to the external thread column (11) is screwed on the outer wall of the non-magnetic nut (2), the coaxial annular groove (21) is arranged on the outer side wall of the non-magnetic nut (2), a plurality of radially arranged limit through holes (211) are arranged at the groove bottom of the annular groove (21), the limit through holes (211) correspond to the first limit grooves (111) one by one, and a radially arranged limit rod (212) is arranged in each limit through hole (211), the two ends of the limiting rod (212) are respectively provided with non-magnetic balls (2121) and magnetic balls (2122), the non-magnetic balls (2121) are in one-to-one correspondence with the first limiting grooves (111), the annular groove (21) is internally provided with a coaxial magnetic limiting ring (22), the annular groove (21) and the magnetic limiting ring (22) are adapted, the inner annular wall of the magnetic limiting ring (22) is provided with a plurality of second limiting grooves (221) which are axially arranged, and the second limiting grooves (221) are in one-to-one correspondence with the magnetic balls (2122).

2. A bolt and nut combination fastener as defined in claim 1, wherein: the horizontal section of the first limiting groove (111) is arc-shaped, and the first limiting groove (111) axially penetrates through the upper end face and the lower end face of the external threaded column (11).

3. A bolt and nut combination fastener as claimed in claim 1 wherein: the horizontal section of the second limiting groove (221) is arc-shaped, and the second limiting groove (221) axially penetrates through the upper end face and the lower end face of the magnetic limiting ring (22).

4. A bolt and nut combination fastener as claimed in claim 1 wherein: the magnetic limiting ring (22) freely rotates in the annular groove (21), and when the non-magnetic ball (2121) is clamped in the first limiting groove (111), the maximum radial length from the magnetic ball (2122) to the axis of the external threaded column (11) is equal to the inner ring radius of the annular groove (21); when the magnetic ball (2122) is clamped in the second limiting groove (221), the minimum radial length from the non-magnetic ball (2121) to the axis of the external threaded column (11) is equal to the inner ring radius of the non-magnetic nut (2).

5. A bolt and nut combination fastener as defined in claim 1, wherein: the non-magnetic ball (2121), the first limiting groove (111), the magnetic ball (2122), the second limiting groove (221), the limiting through hole (211) and the limiting rod (212) are uniformly distributed in a circumferential array by taking the axis of the external thread column (11) as the center of a circle.

6. A bolt and nut combination fastener as defined in claim 1, wherein: the upper end face and the lower end face of the magnetic limiting ring (22) are respectively provided with an anti-skidding rubber ring (201).