CN109989988B

CN109989988B - Anti-loose screw

Info

Publication number: CN109989988B
Application number: CN201910344778.7A
Authority: CN
Inventors: 姜建业
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2024-06-04
Anticipated expiration: 2039-04-26
Also published as: CN109989988A

Abstract

The invention provides a locking screw, which belongs to the technical field of connection and fastening and comprises a bolt, a nut and a plug connector, wherein the end part of the bolt is provided with a notch which extends along the length direction of the bolt and penetrates through two sides of the bolt; the plug connector is used for being axially inserted into the notch along the bolt and limiting rotation in the notch, and the plug connector is a first abutting part from the exposed part of the notch; the nut is used for being in threaded connection with the bolt, be equipped with on the nut be used for with first conflict portion joint restriction nut pivoted second conflict portion. The anti-loose screw solves the problems that the existing bolt and nut connection mode is low in self-locking capability and is often loosened.

Description

Anti-loose screw

Technical Field

The invention belongs to the technical field of connection and fastening, and particularly relates to a locking screw.

Background

The threaded connection has high standardization degree, is easy to assemble, disassemble and manufacture, can adapt to various working conditions, and is widely applied. However, the threaded connection of the bolt and the nut is used for a long time, and the loosening is often caused by various factors such as friction, vibration, temperature and the like, and the loosening of the bolt and the nut can influence the operation of equipment and even cause danger.

Disclosure of Invention

The invention aims to provide a locking screw, which aims to solve the problems that the existing bolt and nut connection mode is low in self-locking capability and is often loosened.

In order to achieve the above purpose, the invention adopts the following technical scheme: provided is a lock screw including:

the end part of the bolt is provided with a notch which extends along the length direction of the bolt and penetrates through two sides of the bolt;

the plug connector is axially inserted into the notch along the bolt and is limited in the notch in a rotating way, and the plug connector is a first abutting part from the exposed part of the notch;

the nut is used for being in threaded connection with the bolt, and the nut is provided with a second abutting part which is used for being clamped with the first abutting part to limit the rotation of the nut.

Further, the first abutting portion is a solid rod or a solid block, and the second abutting portion is provided with a groove or a notch for clamping the solid rod or the solid block.

Further, the second abutting portion is a solid rod or a solid block, and the first abutting portion is provided with a groove or a notch for clamping the solid rod or the solid block.

Further, the plug connector is a plug rod with the length being greater than the diameter of the bolt, the first abutting portion is two ends of the plug rod exposed from the notch, and two ends of the plug rod are also provided with baffles.

Further, the second abutting portion is formed by uniformly distributing a plurality of hooks along the circumferential direction of the nut, and the hooks are provided with grooves or notches.

Further, the second abutting portion is formed by uniformly distributing a plurality of hooks along the circumferential direction of the nut, the groove or the notch is formed between two adjacent hooks, and the grooves or the notches are L-shaped.

Further, the second abutting portion is a stop lever arranged on the nut.

Further, the first abutting portion is annular and provided with a plurality of hooks along the annular direction, and the hooks are provided with the grooves or the notches.

Further, the first abutting portion is annular, a plurality of hooks are arranged along the annular direction, the groove or the notch is formed between two adjacent hooks, and the grooves or the notches are L-shaped.

Further, a limiting mechanism is arranged at the groove or the notch, and the limiting mechanism comprises:

the limiting groove is arranged on the side wall of the groove or the notch;

the spring is arranged in the limit groove;

The locating pin is sleeved in the limiting groove in a sliding mode and is exposed from the side wall by means of a spring, and the locating pin limits the two ends of the inserting and connecting rod to the closed end of the groove or the notch through the exposed section.

The anti-loose screw provided by the invention has the beneficial effects that: compared with the prior art, the lock screw is provided with the notch on the bolt, the second abutting part is arranged on the nut, the plug connector matched with the notch in a plugging way is additionally arranged, the plug connector is limited to rotate through the notch, and the first abutting part and the second abutting part of the plug connector exposing the notch are clamped with the first abutting part to limit the rotation of the nut relative to the bolt, so that the self-locking capacity of the connection mode of the bolt and the nut is effectively improved, and the loosening of threads is prevented.

Drawings

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

Fig. 1 is a schematic structural view of a locking screw according to an embodiment of the present invention;

FIG. 2 is a schematic view of the nut structure provided in the embodiment of FIG. 1;

FIG. 3 is a schematic view of the plug connector according to the embodiment of FIG. 1;

FIG. 4 is a schematic view of a lock screw according to another embodiment of the present invention;

FIG. 5 is a schematic view of the nut structure provided in the embodiment of FIG. 4;

FIG. 6 is a schematic view of the plug connector according to the embodiment of FIG. 4;

FIG. 7 is a schematic view of a lock screw with a limiting mechanism according to the embodiment of FIG. 1;

FIG. 8 is a schematic diagram of a connection structure between a nut and a limiting mechanism of the lockscrew according to the embodiment of FIG. 1;

FIG. 9 is a cross-sectional view A-A of FIG. 8;

fig. 10 is a partial enlarged view of B of fig. 9.

In the figure: 1. a bolt; 2. a nut; 3. inserting a connecting rod; 4. a baffle; 5. a hook; 6. a positioning pin; 7. a spring; 8. a stop lever.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Referring to fig. 1 and 4, the locking screw provided by the present invention will now be described. The anti-loose screw comprises a bolt 1, a plug connector and a nut 2, wherein a notch is formed in the end part of the bolt 1, extends along the length direction of the bolt 1 and penetrates through two sides of the bolt 1; the plug connector is used for being axially inserted into the notch along the bolt 1 and limiting rotation in the notch, and the plug connector is a first abutting part from the exposed part of the notch; the nut 2 is used for being in threaded connection with the bolt 1, be equipped with on the nut 2 be used for with first conflict portion joint restriction nut 2 pivoted second conflict portion. The second abutting portion on the nut 2 is clamped with the first abutting portion, and the plug connector with the first abutting portion is inserted into the notch of the bolt 1 to rotate for limiting, so that self-locking of the bolt 1 and the nut 2 is achieved.

Compared with the prior art, the locking screw provided by the invention has the advantages that the notch is arranged on the bolt 1, the second abutting part is arranged on the nut 2, the plug connector which is in plug connection with the notch is additionally arranged, the rotation of the plug connector is limited through the notch, and the rotation of the nut 2 relative to the bolt 1 is limited by means of the clamping of the first abutting part and the second abutting part of the plug connector, which expose the notch, the self-locking capability of the connection mode of the bolt and the nut is effectively improved, and the loosening of threads is prevented.

As a specific implementation manner of the lock screw provided in the embodiment of the present invention, referring to fig. 1, the first abutting portion is a solid rod or a solid block, and the second abutting portion is provided with a groove or a notch for clamping the solid rod or the solid block.

As a specific implementation manner of the lock screw provided in another embodiment of the present invention, referring to fig. 4, the second abutting portion is a solid rod or a solid block, and the first abutting portion is provided with a groove or a notch for clamping the solid rod or the solid block.

As a specific implementation manner of the lock screw provided in the embodiment of the present invention, referring to fig. 3, the plug connector is a plug rod 3 with a length greater than the diameter of the bolt 1, the first abutting portion is two ends of the plug rod 3 exposed from the notch, and two ends of the plug rod 3 are further provided with a baffle 4. The plug connector passes through plug rod 3 cartridge in bolt 1 notch, sets up baffle 4 at plug rod 3 both ends, and simple structure conveniently makes, and is with low costs, and the plug rod 3 that can expose the notch at plug rod 3 both ends sets up baffle 4 simultaneously and the second conflict portion joint has effectively prevented plug rod 3 along self axis direction drunkenness for the structure is more stable.

Referring to fig. 2 for a specific implementation manner of the lock screw provided in the embodiment of the present invention, the second abutting portion is provided with a plurality of hooks 5 uniformly distributed along the circumferential direction of the nut 2, and the hooks 5 are provided with the grooves or notches. A plurality of hooks 5 are circumferentially arranged at the edge of the nut 2

Referring to fig. 2 for a specific implementation manner of the lock screw provided in the embodiment of the present invention, the second abutting portion is formed by uniformly distributing a plurality of hooks 5 along the circumferential direction of the nut 2, and the groove or notch is formed between two adjacent hooks 5, and is L-shaped. The hooks 5 are L-shaped, and are formed with L-shaped grooves or notches arranged at intervals along the circumferential direction of the nut 2.

In this embodiment, referring to fig. 1, if the nut 2 is turned clockwise to loosen, the L-shaped hooks 5 are all placed in a clockwise direction along the circumferential direction; if the nut 2 is loosened by anticlockwise rotation, the L-shaped hooks 5 are all placed anticlockwise along the circumferential direction. When the nut 2 is screwed to a proper position, the hooks 5 are arranged at intervals to form L-shaped grooves, the plug connector enters the L-shaped grooves along the open ends of the L-shaped grooves, and then the nut 2 is slightly loosened and rotated relative to the bolt 1, so that the plug connector is contacted with the closed ends of the L-shaped grooves, and when the nut 2 is loosened and rotated, the plug connector can press the closed ends of the L-shaped grooves, namely the inner walls of the hooks 5, so that the nut 2 is blocked from being loosened and rotated relative to the bolt 1.

As a specific implementation manner of the lockscrew provided by another embodiment of the present invention, referring to fig. 4 and 5, the second abutting portion is a stop lever 8 disposed on the nut 2. The stop rods 8 are symmetrically arranged on two sides of the nut 2.

As a specific implementation manner of the lock screw provided in another embodiment of the present invention, referring to fig. 6, the first abutting portion is annular and is provided with a plurality of hooks 5 along an annular direction, and the hooks 5 are provided with the grooves or notches. The first interference is annular and is convenient for moving and installing the plug connector with the first interference along the bolt 1.

As a specific implementation manner of the lock screw provided in another embodiment of the present invention, referring to fig. 6, the first abutting portion is annular and is provided with a plurality of hooks 5 along an annular direction, the groove or notch is formed between two adjacent hooks 5, and the plurality of grooves or notches are L-shaped. An annular plate is arranged in the plug connector, a cross beam is arranged in an inner hole of the annular plate, and a plurality of hooks 5 are arranged below the annular plate and along the annular direction. The hooks 5 are L-shaped, and are formed with L-shaped grooves or notches arranged at intervals along the circumferential direction of the nut 2. The cross beam of the plug connector is inserted into the notch of the bolt 1, and two halves of the bolt 1 separated by the notch respectively penetrate out of the semicircular inner holes at two sides of the cross beam.

In this embodiment, referring to fig. 4, if the nut 2 is turned clockwise to loosen, the L-shaped hooks 5 are all placed in a counterclockwise direction along the circumferential direction; if the nut 2 is turned counterclockwise loose, the L-shaped hooks 5 are placed in a clockwise direction along the circumferential direction. When the nut 2 is screwed in place, the plug connector is inserted along the notch of the bolt 1 by means of the cross beam, the plug connector is provided with the first abutting portion, the first abutting portion is formed into an L-shaped groove by the interval arrangement of the hooks 5, the nut 2 is provided with the stop lever 8, the stop lever 8 enters the L-shaped groove along the open end of the L-shaped groove, the nut 2 is slightly loosened and rotated relative to the bolt 1 after the stop lever 8 is contacted with the closed end of the L-shaped groove, and when the nut 2 is loosened and rotated, the stop lever 8 can press the closed end of the L-shaped groove, namely the inner wall of the hooks 5, so that the nut 2 is blocked from being loosened and rotated relative to the bolt 1.

As a specific implementation manner of the lock screw provided by the embodiment of the invention, referring to fig. 7 to 10, a limiting mechanism is arranged at the groove or the notch, the limiting mechanism comprises a limiting groove, a positioning pin 6 and a spring 7, and the limiting groove is arranged on the side wall of the groove or the notch; the spring 7 is arranged in the limit groove; the locating pin 6 is slidably sleeved in the limiting groove and is exposed from the side wall by means of the spring 7, and the locating pin 6 limits the two ends of the insertion connection rod 3 to the closed ends of the groove or the notch through the exposed section. One end of the spring 7 is connected with the limit groove, and the other end is connected with the locating pin 6. The spring 7 is exposed in its natural state on the side wall of the groove or notch of the positioning pin 6. When the first collision is provided with a groove or a notch, the limiting mechanism is arranged on the first collision part; when the second abutting is provided with a groove or a notch, the limiting mechanism is arranged on the second abutting part.

Referring to fig. 7 to 10, since the second abutting portion is provided with a groove, the limiting mechanism is disposed on a sidewall of the groove of the nut 2 with the second abutting portion. When the nut 2 is screwed in place, the plugging rod 3 moves along the notch of the bolt 1 into the open end of the groove or the notch, so that the positioning pin 6 on the side wall of the groove or the notch pushes the nut 2 to retract into the limiting groove; the nut 2 is slightly rotated in the backward loosening direction, the plugging rod 3 enters the closed end of the groove or the notch to be contacted, the plugging rod 3 does not squeeze the positioning pin 6 any more, the positioning pin 6 is exposed from the side wall under the action of the spring 7, and if the nut 2 wants to be loosened to rotate, the plugging rod 3 contacts the closed end of the groove or the notch to prevent the nut 2 from loosening to rotate; if the nut 2 is subjected to complex acting force and is required to be screwed and rotated, the plugging rod 3 is contacted with the positioning pin 6 to block the rotation of the plugging rod, so that the risk of falling off of the plugging rod 3 caused by the screwing and rotating of the nut 2 is avoided, and the locking can be more effective. When the bolt is disassembled, the locating pin 6 is manually pushed into the limiting groove, the rotating nut 2 is properly screwed, the plug connector is taken out, and then the bolt 1 and the nut 2 can be separated. The structure is simple and convenient to detach.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. Lockscrew, its characterized in that includes:

The nut is in threaded connection with the bolt, and a second abutting part which is used for being clamped with the first abutting part to limit the rotation of the nut is arranged on the nut;

The first abutting part is a solid rod or a solid block, and the second abutting part is provided with a groove or a notch for clamping the solid rod or the solid block;

The plug connector is a plug rod with the length being greater than the diameter of the bolt, the first abutting part is two ends of the plug rod exposed from the notch, and two ends of the plug rod are also provided with baffles;

the second abutting part is characterized in that a plurality of hooks are uniformly distributed along the circumferential direction of the nut, the grooves or notches are formed between two adjacent hooks, and the grooves or notches are L-shaped;

The groove or the notch is provided with a limiting mechanism, and the limiting mechanism comprises:

the limiting groove is arranged on the side wall of the groove or the notch;

the spring is arranged in the limit groove;