CN210978147U

CN210978147U - Fastener with anti-drop structure

Info

Publication number: CN210978147U
Application number: CN201921999403.6U
Authority: CN
Inventors: 曹满意
Original assignee: Kaimuyuan Shanghai Chemical Materials Co ltd
Current assignee: Kaimuyuan Shanghai Chemical Materials Co ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-07-10
Anticipated expiration: 2029-11-19

Abstract

The utility model discloses a fastener with anti-drop structure, including bolt and nut, the screw thread screw in has the nut on the bolt, and the horizontal incasement of bolt surface extends and is formed with the recess, the inside threaded rod that is provided with of recess, and the threaded rod passes from the elevator, be antifriction bearing swing joint between the top of threaded rod and the bolt, and the bottom of threaded rod passes from the bolt wall body to be antifriction bearing swing joint between the bottom of threaded rod and the bolt, close for the screw thread soon between elevator and the threaded rod and be connected, and the elevator face is outwards extended to be formed with T type sliding rail to recess groove face one side level. This fastener with anti-drop structure has the bolt and the nut is constituteed, in order to avoid the nut to take place not hard up, can twist the threaded rod, drives through the elevator and supports tight piece perpendicular rebound, and then supports tightly through supporting tight piece and nut to the realization is consolidated the nut, has guaranteed holistic fastening effect.

Description

Fastener with anti-drop structure

Technical Field

The utility model relates to a fastener technical field specifically is a fastener with anti-drop structure.

Background

The fastener is a general name of a mechanical part adopted when two or more parts (or components) are fastened and connected into a whole, the fastener comprises a bolt and a nut, the existing bolt and nut are fastened and connected to the parts, the fastening effect is often greatly reduced due to the fact that the nut is loosened and the bolt is separated, in order to solve the problem, a bayonet lock is arranged on the bolt in the prior art, in order to support the nut tightly, the nut cannot be loosened, the whole fastening effect is guaranteed, but the defects exist, the position of the bayonet lock is fixed, when parts with different thicknesses are fastened, the positions of the nut on the bolt are different, the effect is lost by the bayonet lock, the whole use range is limited, the practicability is not strong, the use requirements of people cannot be met, and in view of the defects in the prior art, the fastener is necessary to be further improved, the utility model is more practical and can meet the practical use condition.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fastener with anti-drop structure to when fastening the part to different thickness, the position of nut on the bolt is different that proposes in solving above-mentioned background art, and the effect is lost to the bayonet lock this moment, leads to whole application range limited, the not strong problem of practicality.

In order to achieve the above object, the utility model provides a following technical scheme: a fastener with an anti-drop structure comprises a bolt and a nut, wherein the nut is screwed in the upper thread of the bolt, a groove is formed in the horizontal box on the surface of the bolt in an extending mode, a threaded rod is arranged in the groove and penetrates through a lifting block, a rolling bearing is movably connected between the top end of the threaded rod and the bolt, the bottom end of the threaded rod penetrates through the wall body of the bolt, the rolling bearing is movably connected between the bottom end of the threaded rod and the bolt, the lifting block and the threaded rod are connected in a threaded screwing mode, a T-shaped sliding rail is formed by horizontally extending the lifting block towards one side of the groove surface of the groove, a sliding groove matched with the sliding rail is formed in the groove, a sleeve for penetrating the threaded rod is connected to the lifting block in a welding mode, a propping block is arranged on the lifting block, and a hole groove for penetrating the threaded rod is formed in, and the top end of the sleeve extends into the hole groove, and the sleeve is movably connected with the wall of the hole groove through a roller bearing.

Preferably, the cross section of the groove is arc-shaped, and the length of the groove is consistent with that of the sliding groove.

Preferably, the lifting block is of a square structure, the surface, away from the groove, of the lifting block and the abutting block is arc-shaped, and the circle center of the side surface of the lifting block and the abutting block is located on the axis of the bolt.

Preferably, the side of the abutting block facing the groove surface of the groove is arc-shaped, and the side surface of the abutting block and the groove are concentric.

Preferably, the bore and the sleeve have an inner diameter greater than the diameter of the threaded shank and are coaxial.

Compared with the prior art, the beneficial effects of the utility model are that: the fastener with the anti-falling structure comprises a bolt and a nut, when the bolt and the nut are used for fastening and connecting two parts, in order to avoid the nut from loosening, a threaded rod can be screwed, a propping block is driven to vertically move upwards through a lifting block, and then the propping block is propped against the nut, so that the nut is reinforced, and the integral fastening effect is ensured;

the threaded rod has certain length, and then makes the elevator block can drive and support tight piece vertical migration one end and reset, and bolt and nut are when carrying out fastening connection to the part of different thickness like this, no matter the nut is in the optional position of bolt, can all consolidate the bolt through supporting tight piece to make this fastener application range big, the practicality is strong.

Drawings

Fig. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a front view of the bolt of the present invention;

FIG. 3 is a schematic view of the cross-sectional structure of the bolt in a plan view;

fig. 4 is an enlarged schematic view of point a in fig. 2 according to the present invention.

In the figure: 1. bolt, 2, nut, 3, recess, 4, threaded rod, 5, elevator piece, 6, support piece, 7, hole groove, 8, sliding rail, 9, sliding tray, 10, sleeve.

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 it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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. 1-4, the present invention provides a technical solution: a fastener with an anti-drop structure comprises a bolt 1 and a nut 2, wherein the nut 2 is screwed in the bolt 1 through threads, a groove 3 is formed in the horizontal box on the surface of the bolt 1 in an extending mode, a threaded rod 4 is arranged inside the groove 3, the threaded rod 4 penetrates through a lifting block 5, a rolling bearing is movably connected between the top end of the threaded rod 4 and the bolt 1, the bottom end of the threaded rod 4 penetrates through the wall body of the bolt 1, the bottom end of the threaded rod 4 is movably connected with the bolt 1 through the rolling bearing, the lifting block 5 is connected with the threaded rod 4 through threads in a screwing mode, a T-shaped sliding rail 8 is formed by the lifting block 5 extending outwards in the horizontal direction towards one side of the groove surface of the groove 3, a sliding groove 9 matched with the sliding rail 8 is formed in the groove 3, a sleeve 10 used for the threaded rod 4 to penetrate through is welded on the lifting block 5, the abutting block 6 is provided with a hole groove 7 for the threaded rod 4 to penetrate, the top end of the sleeve 10 extends into the hole groove 7, and the sleeve 10 is movably connected with the wall of the hole groove 7 through a roller bearing.

The cross section of recess 3 is circular-arc, and the length of recess 3 and sliding tray 9 is unanimous, and elevator 5 is big along sliding tray 9 range of motion through slide rail 8 like this, and then makes the piece 6 that supports tightly be adjustable structure, can adjust rational in infrastructure according to nut 2 at the position of bolt 1.

The lifting block 5 is of a square structure, one side of the lifting block 5 and the abutting block 6, which is far away from the groove 3, is arc-shaped, the circle center of the side surface of the lifting block 5 and the abutting block 6 is located on the axis of the bolt 1, one side of the abutting block 6, which faces the groove surface of the groove 3, is arc-shaped, the side surface of the abutting block 6 and the groove 3 share the same circle center, and the lifting block 5 and the abutting block 6 are structurally designed, so that when the nut 2 is screwed into the bolt 1, friction with the lifting block 5 and the abutting block 6 cannot occur, meanwhile, the abutting block 6 is similar to a convex block, and when the abutting block 6 is screwed out of the groove 3, the nut 2 can be contacted with the nut under the driving of the lifting block 5, and then the nut 2 is abutted tightly, and the nut 2 is prevented from moving.

The inner diameters of the hole groove 7 and the sleeve 10 are larger than the diameter of the threaded rod 4, the hole groove 7 and the sleeve 10 are coaxial, so that the abutting block 6 is not in contact with the bolt rod 4 through the hole groove 7, and the lifting block 5 can stably and rapidly drive the abutting block 6 to lift.

The working principle is as follows: during the use, penetrate the screw hole on two parts with bolt 1, and screw in nut 2 on bolt 1, thereby can carry out fastening connection to two parts, people can press and support tight piece 6 like this, make and support tight piece 6 rotatory along sleeve 10, and screw out in the recess 3, screw threaded rod 4 this moment, threaded rod 4 drives elevator block 5 rotatory, because sliding rail 8 on elevator block 5 can only rise along sliding tray 9, elevator block 5 is rotatory to be driven down vertical rising, elevator block 5 synchronous drive supports tight piece 6 and rises like this, support tight piece 6 and support the nut tightly, can avoid nut 2 not hard up to take place to drop with bolt 1.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A fastener with a drop-proof structure comprises a bolt (1) and a nut (2), and is characterized in that: the screw thread screw-in has nut (2) on bolt (1), and the horizontal incasement of bolt (1) surface extends and is formed with recess (3), recess (3) inside is provided with threaded rod (4), and threaded rod (4) pass from elevator (5), be antifriction bearing swing joint between the top of threaded rod (4) and bolt (1), and the bottom of threaded rod (4) passes from bolt (1) wall body, and be antifriction bearing swing joint between the bottom of threaded rod (4) and bolt (1), be screw thread screwing connection between elevator (5) and threaded rod (4), and elevator (5) outwards extend towards recess (3) groove face one side level and be formed with T type sliding rail (8), and recess (3) set up with sliding tray (9) of sliding rail (8) looks adaptation, welded connection has sleeve (10) that are used for threaded rod (4) to penetrate on elevator (5), and be provided with on lifting block (5) and support tight piece (6), support and offer on tight piece (6) and be used for threaded rod (4) hole groove (7) that penetrate, and sleeve (10) top extends to in hole groove (7) to be cylinder bearing swing joint between sleeve (10) and hole groove (7) cell wall.

2. A fastener having a drop-preventing structure according to claim 1, wherein: the cross section of the groove (3) is arc-shaped, and the length of the groove (3) is consistent with that of the sliding groove (9).

3. A fastener having a drop-preventing structure according to claim 1, wherein: the lifting block (5) is of a square structure, one surface, away from the groove (3), of the lifting block (5) and the abutting block (6) is arc-shaped, and the circle centers of the side surfaces of the lifting block (5) and the abutting block (6) are located on the axis of the bolt (1).

4. A fastener having a drop-preventing structure according to claim 1, wherein: the side, facing the groove surface of the groove (3), of the abutting block (6) is arc-shaped, and the side surface of the abutting block (6) is concentric with the groove (3).

5. A fastener having a drop-preventing structure according to claim 1, wherein: the inner diameters of the hole groove (7) and the sleeve (10) are larger than the diameter of the threaded rod (4), and the hole groove (7) and the sleeve (10) are coaxial.