CN218953771U

CN218953771U - Antitheft screw nail

Info

Publication number: CN218953771U
Application number: CN202223488527.2U
Authority: CN
Inventors: 印保良
Original assignee: Haiyan Hengxin Standard Parts Technology Co ltd
Current assignee: Haiyan Hengxin Standard Parts Technology Co ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-05-02
Anticipated expiration: 2032-12-21

Abstract

The utility model discloses an anti-theft screw which comprises a head screw rod, a connecting screw rod, a first blind hole, an inner screwing groove, an anti-theft cover, an inner threaded blind hole, a second blind hole, an outer screwing groove, a screwing piece, a limiting boss and a handle, wherein the lower end face of the head screw rod is provided with the coaxial connecting screw rod, the upper end face of the head screw rod is provided with the coaxial first blind hole, the bottom of the first blind hole is provided with the coaxial inner screwing groove, the anti-theft cover is cylindrical, and the lower end face of the anti-theft cover is provided with the coaxial inner threaded blind hole. The anti-theft screw is simple in structure and reasonable in design, can enable a thief to be difficult to detach, is easy to detach, and can be used for preventing theft while being convenient for the thief.

Description

Antitheft screw nail

[ field of technology ]

The utility model relates to the technical field of anti-theft screws, in particular to the technical field of anti-theft screws.

[ background Art ]

Screws or bolts are used as a common fastener, and serve to connect and fix two components to each other, so that the screw or the bolt is widely applied to various fields. The prior art screw is usually composed of a cylinder with threads on the circumference and a nut arranged at the end of the cylinder, and grooves with different shapes are also arranged on the nut. When the screw is used, the screw can be easily removed by means of a common screwdriver and other tools, so that expensive equipment, instruments and the like which are connected by the screw can be stolen or illegally damaged, and the anti-theft effect cannot be achieved.

At present, a common flat head screw is generally adopted as a screw of the anti-theft lock of the electric vehicle, and the mounting hole of the lock is slightly larger for facilitating the mounting of the anti-theft lock, so that a mounting gap exists after the mounting, the anti-theft lock is easy to loosen under the use of the national standard safety torsion force of 200N, and the anti-theft durability of the electric vehicle is affected.

In order to solve the above problems, application number 202220950583.4 discloses an anti-theft screw, which is compared with the prior art, by arranging an installation part at the end part of a rotary rod body, arranging a plurality of pushing pieces on the installation part, and arranging pushing planes which are mutually matched with a limiting plane on the side surfaces of the pushing pieces. According to the matched screwing tool, when the screw is rotated, the mounting part can be abutted against the top of the rotating protrusion of the screw, the pushing piece stretches into the gap between the two rotating protrusions, the pushing plane is abutted against the limiting plane on the screw, and when the matched screwing tool rotates towards the direction close to the limiting plane, the main body rod and the cap body can be pushed to rotate, so that the screw is fastened. However, when the screwing tool rotates reversely, the pushing piece slides out from between the two rotary protrusions along the sliding guide inclined plane, so that the main body rod and the cap body are prevented from rotating reversely, the anti-theft screw cannot be easily removed, and the anti-theft of valuable equipment is realized.

The anti-theft screw is difficult to disassemble, but has some defects, the purpose of the anti-theft screw is that in order to ensure that a thief is not easy to disassemble, but not the thief is also difficult to disassemble, the scheme ensures that the thief and the thief are not easy to disassemble, the disassembly and maintenance of the parts are difficult when the thief wants to disassemble and maintain, in the running process of the equipment, the parts are unavoidable, unless the equipment is directly discarded without being damaged or broken once, and the maintenance is not possible, so that the anti-theft screw which ensures that the thief is not easy to disassemble is necessary.

[ utility model ]

The utility model aims to solve the problems in the prior art, and provides the anti-theft screw which is not easy to detach by a thief, but is easy to detach by the thief, so that the anti-theft screw is convenient to use and can be used for preventing theft.

In order to achieve the above purpose, the utility model provides an anti-theft screw, which comprises a head screw, a connecting screw, a first blind hole, an inner screwing groove, an anti-theft cover, an inner threaded blind hole, a second blind hole, an outer screwing groove, a screwing piece, a limiting boss and a handle, wherein the lower end face of the head screw is provided with the coaxial connecting screw, the upper end face of the head screw is provided with the coaxial first blind hole, the bottom of the first blind hole is provided with the coaxial inner screwing groove, the anti-theft cover is cylindrical, the lower end face of the anti-theft cover is provided with the coaxial inner threaded blind hole, the inner threaded blind hole is screwed on the head screw, the bottom of the inner threaded blind hole is provided with the coaxial second blind hole, the edge of the upper end face of the anti-theft cover is provided with a plurality of outer screwing grooves, the outer screwing grooves are uniformly distributed in a circumferential shape by taking the axis of the second blind hole as the circle center, the outer screwing grooves are surrounded by the vertical inner wall and the inclined inner wall, the vertical inner wall is vertically and radially arranged outside the second blind hole, the horizontal section of the inclined inner wall is circular arc, the horizontal section of the inclined inner wall is buckled on the vertical inner wall, the horizontal distance between the inclined inner wall and the vertical inner wall is gradually decreased from top to bottom, the inclined inner wall is connected with the vertical inner wall, the bottom, the screwing piece is provided with the vertical inner wall, the corresponding to the limiting boss is uniformly distributed with the plurality of outer screwing grooves, the limiting bosses are uniformly distributed on the outer screwing grooves, and the outer screwing grooves are uniformly are distributed on the round and the limiting boss.

Preferably, the included angle between the vertical inner wall and the inclined surface inner wall is larger than sixty degrees.

Preferably, the shape of the limiting protrusion is matched with the shape of the outer screwing groove, and the limiting protrusion can just fill the outer screwing groove.

Preferably, the bottom of the second blind hole is in an upwardly concave arch shape.

Preferably, the plurality of external screwing grooves are all arranged outside the second blind hole.

Preferably, the outer diameter of the head screw is larger than that of the connecting screw, and a drill bit is arranged at the bottom end of the connecting screw.

Preferably, the internal screwing groove is one of a cross groove and a hexagonal groove.

Preferably, the screwing directions of the internal thread blind hole and the connecting screw rod are consistent.

Preferably, the lower end surface of the anti-theft cover and the outer pipe wall are in rounded transition.

The utility model has the beneficial effects that: the anti-theft screw is simple in structure and reasonable in design, can enable a thief to be difficult to detach, is easy to detach, and can be used for preventing theft while being convenient to use; the anti-theft cover is easy to screw but not easy to detach, good anti-theft effect is achieved, a thief can see that the anti-theft cover is a screw head, the head screw on the inner side of the anti-theft cover is difficult to screw in a mode of puncturing the center position of the upper end face of the anti-theft cover, meanwhile, after the anti-theft cover is installed, the top end of the anti-theft cover is coplanar with the upper end face of the installation face, the thief cannot screw the anti-theft cover through the side wall of the anti-theft cover, the anti-theft performance of the anti-theft cover is good, and therefore the screw formed by the head screw on the inner side of the anti-theft cover and the connecting screw is good in anti-theft performance; the thickness of the middle part of the upper end face of the anti-theft cover is reduced by arranging the second blind hole, so that the middle part of the upper end face of the anti-theft cover is favorably broken down; the tightening directions of the blind holes with internal threads and the connecting screw rods are consistent, so that the screw rod formed by the head screw rod and the connecting screw rod can not loosen while the anti-theft cover is tightened.

The features and advantages of the present utility model will be described in detail by way of example with reference to the accompanying drawings.

[ description of the drawings ]

FIG. 1 is a schematic front view of an antitheft screw of the present utility model;

FIG. 2 is a schematic top view of the anti-theft cover of the anti-theft screw of the present utility model;

FIG. 3 is a schematic front view of the tightening member of the antitheft screw of the utility model;

fig. 4 is a schematic top view of the tightening member of the antitheft screw of the utility model.

[ detailed description ] of the utility model

Referring to fig. 1, 2, 3 and 4, the anti-theft screw of the utility model comprises a head screw 2, a connecting screw 21, a first blind hole 201, an internal screwing groove 202, an anti-theft cover 3, an internal thread blind hole 31, a second blind hole 32, an external screwing groove 33, a screwing piece 4, a limit protrusion 41 and a handle 42, wherein the lower end face of the head screw 2 is provided with the coaxial connecting screw 21, the upper end face of the head screw 2 is provided with the coaxial first blind hole 201, the hole bottom of the first blind hole 201 is provided with the coaxial internal screwing groove 202, the anti-theft cover 3 is cylindrical, the lower end face of the anti-theft cover 3 is provided with the coaxial internal thread blind hole 31, the internal thread blind hole 31 is screwed on the head screw 2, the hole bottom of the internal thread blind hole 31 is provided with the coaxial second blind hole 32, the upper end face edge of the anti-theft cover 3 is provided with a plurality of external screwing grooves 33, the outer groove 33 of screwing up of a plurality of uses the second blind hole 32 axis to be circumference form evenly distributed as the centre of a circle, and outer groove 33 of screwing up is enclosed by vertical inner wall 331 and inclined plane inner wall 332, and vertical inner wall 331 is vertical and radial setting is in the second blind hole 32 outside, and inclined plane inner wall 332's horizontal cross-section is circular-arc, and inclined plane inner wall 332 detains on vertical inner wall 331, and the horizontal interval between inclined plane inner wall 332 and the vertical inner wall 331 is from last to descending down, inclined plane inner wall 332 links to each other with vertical inner wall 331 bottom, screw up piece 4 and outer groove 33 looks adaptation of screwing up, screw up piece 4 up end and be equipped with a plurality of spacing protruding 41, and a plurality of spacing protruding 41 is circumference form evenly distributed with screwing up piece 4 axis as the centre of a circle, and the groove 33 one-to-one is screwed up to a plurality of spacing protruding 41, screw up piece 4 bottom is equipped with handle 42.

Wherein the included angle between the vertical inner wall 331 and the inclined inner wall 332 is greater than sixty degrees.

The shape of the limiting protrusion 41 is matched with the shape of the external screwing groove 33, and the limiting protrusion 41 can just fill the external screwing groove 33.

Wherein, the bottom of the second blind hole 32 is in an upwardly concave arch shape.

Wherein, a plurality of the external screwing grooves 33 are all arranged outside the second blind hole 32.

The outer diameter of the head screw rod 2 is larger than that of the connecting screw rod 21, and a drill bit is arranged at the bottom end of the connecting screw rod 21.

Wherein, the inner twisting groove 202 is one of a cross groove and a hexagonal groove.

Wherein, the screwing directions of the internal thread blind hole 31 and the connecting screw 21 are consistent.

Wherein, the rounded transition between the outer tube wall and the lower terminal surface of anti-theft cover 3.

The working process of the utility model comprises the following steps:

in the working process of the anti-theft screw, a head mounting hole 11 and a screw mounting hole 12 positioned at the bottom of the head mounting hole 11 are arranged on a mounting surface 1, the depth of the head mounting hole 11 is equal to the height of the anti-theft cover 3, the inner diameter of the head mounting hole 11 is equal to the outer diameter of the anti-theft cover 3, firstly, the connecting screw 21 is screwed into the screw mounting hole 12 by utilizing an inner screwing groove 202 until the head screw 2 is pressed at the bottom of the head mounting hole 11, then the anti-theft cover 3 is screwed on the head screw 2 by utilizing a screwing piece 4, the anti-theft cover 3 is correspondingly inserted into an outer screwing groove 33 by utilizing a screwing piece 4, then the anti-theft cover 3 is rotated in a mode of rotating and pressing the vertical inner wall 331 until the anti-theft cover 3 is pressed at the bottom of the head mounting hole 11, at the moment, the top end of the anti-theft cover 3 is coplanar with the upper end face of the mounting surface 1, and the inner wall 332 is surrounded by the vertical inner wall 331 and the inclined plane, the horizontal section of the inclined plane inner wall 332 is in an arc shape, the horizontal distance between the inclined plane inner wall 332 and the vertical inner wall 331 is from top down, the inclined plane inner wall 332 is connected with the bottom of the vertical inner wall 331, and therefore, if the anti-theft cover 3 is required to be screwed on the head screw 3 by utilizing a screwing piece 4 to be screwed down piece 4, the boss 3 is screwed on the head screw 3, the boss 3 is directly screwed down along the boss 33, the position of the boss 33 is directly, the inner side of the inner wall 33 is directly screwed down, the inner wall is directly, the inner side of the anti-theft cover 3 is required, the anti-theft cover is directly screwed, and the anti-theft cover is removed by screwing, and the anti-theft cover is directly is removed by screwing the screwing, and the anti-theft cover 3 is directly, and the anti-theft cover is screwed, and the head is directly, and the anti-theft cover is screwed, and is directly, and the is screwed.

The anti-theft screw is simple in structure and reasonable in design, can enable a thief to be difficult to detach, is easy to detach, and can be used for preventing theft while being convenient to use; the anti-theft cover 3 is arranged to prevent theft, the anti-theft cover 3 is easy to screw but not easy to detach, a good anti-theft effect is achieved, a thief can see that the anti-theft cover 3 is a screw head, the head screw 2 on the inner side of the anti-theft cover 3 is difficult to screw in a mode of puncturing the center position of the upper end face of the anti-theft cover 3, meanwhile, after the anti-theft cover 3 is installed, the top end of the anti-theft cover 3 is coplanar with the upper end face of the installation face 1, the thief cannot screw the anti-theft cover 3 through the side wall of the anti-theft cover 3, the anti-theft performance of the anti-theft cover 3 is good, and therefore the screw formed by the head screw 2 on the inner side of the anti-theft cover 3 and the connecting screw 21 is good in anti-theft performance; the thickness of the middle part of the upper end face of the anti-theft cover 3 is reduced by arranging the second blind hole 32, so that the middle part of the upper end face of the anti-theft cover 3 is favorably broken down; by arranging the internal thread blind hole 31 and the tightening direction of the connecting screw rod 21 to be consistent, the screw rod formed by the head screw rod 2 and the connecting screw rod 21 can not loosen while the anti-theft cover 3 is tightened.

The above embodiments are illustrative of the present utility model, and not limiting, and any simple modifications of the present utility model fall within the scope of the present utility model.

Claims

1. Antitheft screw nail, its characterized in that: the anti-theft device comprises a head screw (2), a connecting screw (21), a first blind hole (201), an inner screwing groove (202), an anti-theft cover (3), an inner threaded blind hole (31), a second blind hole (32), an outer screwing groove (33), screwing pieces (4), a limiting boss (41) and a handle (42), wherein the lower end surface of the head screw (2) is provided with the coaxial connecting screw (21), the upper end surface of the head screw (2) is provided with the coaxial first blind hole (201), the hole bottom of the first blind hole (201) is provided with the coaxial inner screwing groove (202), the anti-theft cover (3) is cylindrical, the lower end surface of the anti-theft cover (3) is provided with the coaxial inner threaded blind hole (31), the inner threaded blind hole (31) is screwed on the head screw (2), the edge of the upper end surface of the anti-theft cover (3) is provided with a plurality of outer screwing grooves (33), the plurality of outer screwing grooves (33) take the axis of the second blind hole (32) as circle centers, the circle center is uniformly distributed, the outer screwing grooves (33) are formed by the vertical inner wall (331) and the inner wall and the inclined plane (331) are arranged on the outer circular arc, the second inner wall (331) is a vertical inner wall (331) and the vertical inner wall (331) is a radial inner wall (332) is arranged on the outer circular arc, the vertical inner wall (331) is a horizontal inner wall (332), the horizontal distance between inclined plane inner wall (332) and vertical inner wall (331) is from last to descending, and inclined plane inner wall (332) link to each other with vertical inner wall (331) bottom, screw up piece (4) and screw up groove (33) looks adaptation outward, screw up piece (4) up end and be equipped with a plurality of spacing arch (41), a plurality of spacing arch (41) are circumference form evenly distributed with screwing up piece (4) axis as the centre of a circle, and a plurality of spacing arch (41) are screwed up groove (33) one-to-one outward with a plurality of, screw up piece (4) bottom and be equipped with handle (42).

2. The antitheft screw of claim 1 wherein: the included angle between the vertical inner wall (331) and the inclined inner wall (332) is larger than sixty degrees.

3. The antitheft screw of claim 1 wherein: the shape of the limiting protrusion (41) is matched with the shape of the outer screwing groove (33), and the limiting protrusion (41) can just fill the outer screwing groove (33).

4. The antitheft screw of claim 1 wherein: the bottom of the second blind hole (32) is in an upwards concave arch shape.

5. The antitheft screw of claim 1 wherein: the plurality of outward screwing grooves (33) are all arranged on the outer side of the second blind hole (32).

6. The antitheft screw of claim 1 wherein: the outer diameter of the head screw rod (2) is larger than that of the connecting screw rod (21), and a drill bit is arranged at the bottom end of the connecting screw rod (21).

7. The antitheft screw of claim 1 wherein: the inner screwing groove (202) is one of a cross groove and a six-edge groove.

8. The antitheft screw of claim 1 wherein: the screwing directions of the internal thread blind hole (31) and the connecting screw rod (21) are consistent.

9. The antitheft screw of claim 1 wherein: the lower end surface of the anti-theft cover (3) is in rounded transition with the outer pipe wall.