CN216742367U

CN216742367U - Outdoor big flat head anti-theft fixing bolt

Info

Publication number: CN216742367U
Application number: CN202123353909.XU
Authority: CN
Inventors: 朱飞华
Original assignee: Yichen Hardware Zhejiang Co ltd
Current assignee: Yichen Hardware Zhejiang Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-06-14
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses an outdoor big flat head anti-theft fixing bolt, in particular to the technical field of bolts, the existing fixing bolt has no anti-theft function, the bolt can be taken out by rotating a screwdriver, the bolt is easy to be stolen, the inner angle of the surface of the nut of the fixing bolt is generally exposed outside, the bolt can be directly taken out by using the screwdriver, one side of the stud is welded with the nut, the upper surface of the nut is provided with a protective cover, a push rod drives two end limit blocks to slide on a limit post, simultaneously, a spring is compressed, the push rod drives a fixing block to move downwards, the fixing block drives a clamping strip to move, thereby driving two ends of the clamping strip to slide on the lower surface of the inner wall of the stud, the clamping strip passes through a through hole and is clamped outside, the fixing of the bolt is completed, the stability of the fixing of the bolt is improved, the pressure rod is pressed into the limit port, the protective cover is rotated by ninety degrees, and the fixing of the nut and the protective cover is completed, through the protection casing that sets up, can avoid directly adopting the screwdriver to take out the double-screw bolt.

Description

Outdoor big flat head anti-theft fixing bolt

Technical Field

The utility model relates to a bolt technical field specifically is an outdoor big flat head theftproof fixing bolt.

Background

The bolt is a mechanical part, a cylindrical threaded fastener matched with a nut, a fastener composed of a head part and a screw (a cylinder with an external thread) needs to be matched with the nut and is used for fastening and connecting two parts with through holes, the connection form is called bolt connection, if the nut is screwed off from the bolt, the two parts can be separated, so the bolt connection belongs to detachable connection, and the bolt is a tool for fastening a device part step by utilizing the physics and mathematical principles of the inclined plane circular rotation and the friction force of the object.

However, the existing outdoor large flat head anti-theft fixing bolt has the following defects:

1. the existing fixing bolt does not have an anti-theft function, and the bolt can be taken out by rotating a screwdriver, so that the bolt is easy to be stolen;

2. the inner angle of the surface of the nut of the fixing bolt is generally exposed outside, and the bolt can be directly taken out by using a screwdriver.

In response to the situation, the technical personnel in the field provide an outdoor large flat-head anti-theft fixing bolt.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an outdoor big flat head theftproof fixing bolt to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides an outdoor big flat head theftproof fixing bolt, includes the double-screw bolt, the welding of double-screw bolt one side has the nut, and the nut upper surface is equipped with the protection casing.

The nut inner wall is equipped with the activity chamber, the equal fixedly connected with spacing post in activity intracavity inner wall both sides, and two spacing post surfaces sliding connection respectively have two stoppers, fixedly connected with push rod between two stoppers, the fixed surface fixedly connected with fixed block under the push rod, the fixed block surface articulates respectively has two card strips.

As a further aspect of the present invention: fastening sockets are formed in the outer surface of the nut, a pressure rod is fixedly connected to the upper surface of the inner wall of the protective cover, and a limiting opening corresponding to the pressure rod is formed in the outer surface of the nut.

As a further aspect of the present invention: the outer surface of the limiting column is movably sleeved with a spring, one side of the spring is fixedly connected with the lower surface of the limiting block, and the other side of the spring is fixedly connected with the lower surface of the movable cavity.

As a further aspect of the present invention: the stud is of a hollow structure, and the outer surface of the push rod penetrates through the lower surface of the nut and the upper surface of the stud in a sliding mode.

As a further aspect of the present invention: the lower surface of the clamping strip is attached to the lower surface of the inner wall of the stud, and through holes corresponding to the clamping strip are formed in two sides of the outer surface of the stud.

As a further aspect of the present invention: the fastening socket and the limiting opening are arranged in a cross shape, and the limiting opening is communicated with the movable cavity.

As a further aspect of the present invention: the protective cover is internally provided with a clamping groove corresponding to the nut, the pressing rod is arranged to be of a zigzag structure, and the lower end of the pressing rod is movably connected inside the movable cavity.

The beneficial effects of the utility model are that:

1. the push rod drives the limiting blocks at the two ends to slide on the limiting columns, the spring is compressed at the same time, the push rod drives the fixing block to move downwards, the fixing block drives the clamping strip to move, so that the two ends of the clamping strip are driven to slide on the lower surface of the inner wall of the stud, the clamping strip penetrates through the through hole and is clamped outside, the bolt is fixed, and the fixing stability of the bolt is improved;

2. the pressing rod is pressed into the limiting hole until the pressing rod enters the movable cavity, the protective cover is rotated by ninety degrees, the pressing rod is rotated in the movable cavity, the nut and the protective cover are fixed, and the screw bolt can be prevented from being directly taken out by the screwdriver through the arranged protective cover.

Drawings

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

FIG. 1 is a perspective view of an outdoor large flat head anti-theft fixing bolt;

FIG. 2 is a schematic cross-sectional view of the whole of FIG. 1;

fig. 3 is an enlarged schematic view of a point a in fig. 2.

In the figure: 1. a stud; 11. a push rod; 12. a fixed block; 13. clamping the strip; 14. a limiting block; 15. a limiting column; 16. a spring; 2. a nut; 21. fastening the socket; 22. a limiting port; 3. a protective cover; 31. a pressure lever; 32. a movable cavity.

Detailed Description

The following description will be clearly and completely described with reference to the drawings in the embodiment of the present invention, and please refer to fig. 1 to 3, the embodiment of the present invention is as follows:

an outdoor large flat head anti-theft fixing bolt comprises a stud 1, a nut 2 is welded on one side of the stud 1, and a protective cover 3 is arranged on the upper surface of the nut 2.

2 inner walls of nut are equipped with movable chamber 32, the equal fixedly connected with spacing post 15 in the inside inner wall both sides in activity chamber 32, two 15 outer surfaces of spacing post sliding connection respectively have two stoppers 14, fixedly connected with push rod 11 between two stoppers 14, push rod 11 lower fixed surface is connected with fixed block 12, fixed block 12 surface articulates respectively has two card strips 13, the movable cover of 15 outer surfaces of spacing post is equipped with spring 16, spring 16 one side and stopper 14 lower fixed surface are connected, spring 16 opposite side and activity chamber 32 lower fixed surface are connected, double-screw bolt 1 sets up to hollow structure, push rod 11 surface slip runs through nut 2 lower surface and double-screw bolt 1 upper surface, card strip 13 lower surface laminating double-screw bolt 1 inner wall lower surface, the through-hole corresponding with card strip 13 has been seted up to double-screw bolt 1 surface both sides.

Fastening socket 21 has been seted up to 2 surfaces of nut, 3 inner walls of protection casing upper surface fixedly connected with

depression bar

31, 2 surfaces of nut have been seted up with the corresponding spacing mouth 22 of depression bar 31, fastening socket 21 is the cross setting with spacing mouth 22, spacing mouth 22 is linked together with activity chamber 32, the inside draw-in groove corresponding with nut 2 of having seted up of protection casing 3, depression bar 31 sets up to the word-crossing structure, depression bar 31 lower extreme swing joint is inside activity chamber 32.

The utility model discloses a theory of operation is: a straight screwdriver is adopted and inserted into the fastening socket 21, the stud 1 is rotated to a required position, the pressure rod 31 is pressed into the limiting opening 22 until the pressure rod 31 enters the movable cavity 32, the protective cover 3 is rotated to enable the pressure rod 31 to rotate in the movable cavity 32, the push rod 11 drives the limiting blocks 14 at the two ends to slide on the limiting posts 15, the spring 16 is compressed, the push rod 11 drives the fixing block 12 to move downwards, the fixing block 12 drives the clamping strips 13 to move, so that the two ends of the clamping strips 13 are driven to slide on the lower surface of the inner wall of the stud 1, the clamping strips 13 penetrate through the through holes and are clamped outside, and the bolt is fixed.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An outdoor large flat-head anti-theft fixing bolt comprises a stud (1) and is characterized in that a nut (2) is welded on one side of the stud (1), and a protective cover (3) is arranged on the upper surface of the nut (2);

nut (2) inner wall is equipped with activity chamber (32), the equal fixedly connected with of the inside inner wall both sides of activity chamber (32) spacing post (15), and sliding connection has two stopper (14) respectively for two spacing post (15) surfaces, fixedly connected with push rod (11) between two stopper (14), and fixed surface is connected with fixed block (12) under push rod (11), and fixed block (12) surface articulates respectively has two card strip (13).

2. The outdoor large flat-head anti-theft fixing bolt according to claim 1, characterized in that the outer surface of the nut (2) is provided with a fastening socket (21), the upper surface of the inner wall of the protective cover (3) is fixedly connected with a pressure lever (31), and the outer surface of the nut (2) is provided with a limit opening (22) corresponding to the pressure lever (31).

3. The outdoor large flat-head anti-theft fixing bolt according to claim 1, characterized in that a spring (16) is movably sleeved on the outer surface of the limiting column (15), one side of the spring (16) is fixedly connected with the lower surface of the limiting block (14), and the other side of the spring (16) is fixedly connected with the lower surface of the movable cavity (32).

4. An outdoor large flat head anti-theft fixing bolt according to claim 1, characterized in that the stud (1) is a hollow structure, and the outer surface of the push rod (11) is slidably penetrated through the lower surface of the nut (2) and the upper surface of the stud (1).

5. The outdoor large flat-head anti-theft fixing bolt according to claim 1, characterized in that the lower surface of the clamping strip (13) is attached to the lower surface of the inner wall of the stud (1), and through holes corresponding to the clamping strip (13) are formed in two sides of the outer surface of the stud (1).

6. The outdoor large flat-head anti-theft fixing bolt according to claim 2, characterized in that the fastening socket (21) and the limiting opening (22) are arranged in a cross shape, and the limiting opening (22) is communicated with the movable cavity (32).

7. The outdoor large flat head anti-theft fixing bolt according to claim 2, characterized in that a clamping groove corresponding to the nut (2) is formed in the protective cover (3), the pressing rod (31) is in a zigzag structure, and the lower end of the pressing rod (31) is movably connected to the inside of the movable cavity (32).