CN214533944U

CN214533944U - Anti-theft screw

Info

Publication number: CN214533944U
Application number: CN202120727886.5U
Authority: CN
Inventors: 徐奇军; 张建东; 侯建良
Original assignee: Ningbo Ningli High Strength Fastener Co ltd
Current assignee: Ningbo Ningli High Strength Fastener Co ltd
Priority date: 2021-04-09
Filing date: 2021-04-09
Publication date: 2021-10-29
Anticipated expiration: 2031-04-09

Abstract

The utility model relates to the technical field of anti-theft screws, in particular to an anti-theft screw, which comprises a screw head, a screw rod and a screw cap, wherein one end of the screw head is fixedly connected with the screw rod, and the other end of the screw head is rotationally connected with the screw cap; the screwdriver head is characterized in that a tool groove for the rotation of a screwdriver head of a universal screwdriver is formed in the upper end face of the screwdriver head, a through groove matched with the tool groove is formed in the screw cap, and when the tool groove and the through groove are aligned, the screwdriver head and the screw cap can be synchronously rotated by the screwdriver head. The utility model provides a theftproof screw wherein is equipped with the screw cap, through the adjustment screw cap for the screwdriver bit can pass and lead to the groove and enter into the inslot and rotate together screw head and screw cap, through the position between location portion set screw cap and the screwhead, and the restriction screwdriver inserts the inslot, has effectively improved the theftproof performance, safe and reliable of screw.

Description

Anti-theft screw

Technical Field

The utility model relates to a theftproof screw technical field especially relates to a theftproof screw.

Background

Products used in some public places, such as mobile communication base stations, license plates of cars, seats of shared bicycles, baskets, electronic locks, etc., are easily stolen if common screws are used. Taking a shared bicycle and a shared electric bicycle as examples, in order to prevent theft, manufacturers adopt some screws with special heads, such as an inner hexagonal cored anti-theft screw, a quincunx inner hexagonal cored anti-theft screw, an inner pentagonal cored anti-theft screw, a quincunx inner pentagonal cored anti-theft screw, a triangular anti-theft screw and the like, and because tools corresponding to the screws are special, the screws are less circulated in the market, so that the purpose of preventing the tools such as a cross screwdriver, a straight screwdriver, a common inner hexagonal wrench, a common quincunx inner hexagonal wrench and the like which are very wide in the market from screwing out the screws is achieved, and a certain anti-theft effect is achieved.

However, these more specialized tools are only a few smaller than the conventional tools, but are still easily available, and are generally sold by hardware tool shops, Taobao, Tianmao, Jingdong and other electronic businesses, are easy to purchase, and are low in price, so that the anti-theft effect is greatly reduced.

To the above problem, the utility model provides an anti-theft screw.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to solve the problem that a theftproof screw is provided can solve and tear the current poor problem of screw theftproof performance open.

(II) technical scheme

The utility model provides a technical scheme that above-mentioned technical problem adopted is: the anti-theft screw comprises a screw head, a screw rod and a screw cap, wherein one end of the screw head is fixedly connected with the screw rod, and the other end of the screw head is rotatably connected with the screw cap.

In the technical scheme, the screw cap is adjusted, so that the screwdriver head can rotate the screw cap and the screwdriver head together, and the screw is convenient to install; the screw cap is adjusted after the screw is installed. So that the screw cap can protect the screw head.

The screwdriver head is characterized in that a tool groove for the rotation of a screwdriver head of a universal screwdriver is formed in the upper end face of the screwdriver head, a through groove matched with the tool groove is formed in the screw cap, and when the tool groove and the through groove are aligned, the screwdriver head and the screw cap can be synchronously rotated by the screwdriver head.

In the technical scheme, the cutter groove and the through groove are matched with the screwdriver head, the size of the through groove is not smaller than that of the cutter groove, when the cutter groove and the through groove are aligned, the screwdriver head can conveniently extend into the cutter groove from the through groove to rotate the screwdriver head and the screw cap together, when the cutter groove and the through groove are staggered, the screw cap covers the cutter groove, the screwdriver head can not extend into the cutter groove to work, and the screw cap plays a role in protecting the screwdriver head.

The side wall of the screw head is symmetrically provided with positioning grooves, the side wall of the screw cap is provided with through holes matched with the positioning grooves, when the positioning grooves are aligned with the through holes, the through grooves and the cutter grooves are staggered, positioning parts are installed in the positioning grooves, and the positioning parts extend into the through holes.

In the technical scheme, when the through groove is aligned with the cutter groove, the positioning groove is not aligned with the through hole, when the positioning groove is aligned with the through hole, the through groove is staggered with the cutter groove, the positioning part penetrates into the positioning groove and the through hole, the screw cap is fixed at a proper position on the outer wall of the screw head, the fixed screw cap covers the cutter groove, the cutter head of the screwdriver is effectively prevented from entering the cutter groove to unscrew the screw, and the screw is protected.

Preferably, the constant head tank includes leading-in groove and the wedge groove that from interior to exterior set up, the leading-in inslot inner wall is fixed with the reinforcing pad, two relative lateral walls symmetries of wedge groove are equipped with the sliding tray, sliding connection has the limiting plate in the sliding tray, the limiting plate with be connected with spacing spring between the sliding tray.

Preferably, the positioning part comprises a guiding part and a wedge part, the guiding part is matched with the guiding groove, the wedge part is matched with the wedge groove, and a limiting groove matched with the limiting plate is arranged on the inner wall of the sliding groove, which is over against the wedge part.

In above-mentioned technical scheme, when in locating part installation into constant head tank and through-hole, at first leading-in portion joint enters the introduction tank, the reinforcement pad is not being brought into with the introduction tank between the joint between leading-in portion and the introduction tank has been strengthened, wedge portion joint advances the wedge inslot, spacing integrated circuit board connects into spacing inslot, the three-layer joint firmly with locating part in the fixed head tank, thereby the tail end of locating part is located the through-hole and makes the screw cap fix the outer wall at the screwhead.

Preferably, the size of the introduction part is smaller than that of the wedge part, and accordingly, the size of the introduction groove is smaller than that of the wedge part; wherein, the structure is convenient for the wedge part of the positioning part to be clamped into the wedge groove and the through hole.

Preferably, the distance between the two limit plates is greater than the width of the introduction part; this structure is favorable to making leading-in portion pass from between two limiting plates and enter into the leading-in inslot, wedge portion slowly extrudees the limiting plate for the limiting plate enters into the sliding tray and extrudes spacing spring, and when limiting plate and spacing groove were aligned, when realizing spacingly by the effect that spacing spring reset, make the limiting plate pushed to the spacing inslot and realize spacingly, at this moment, leading-in portion tightly the joint is in the leading-in inslot.

Preferably, the side wall of the screw head is provided with an annular groove, the inner wall of the screw cap is provided with a rotating ring matched with the annular groove, and the rotating ring is rotationally connected with the annular groove; wherein, the rotating ring is matched with the ring groove, so that the position between the through groove of the screw cap and the cutter groove of the screw head can be conveniently adjusted.

Preferably, the section of the ring groove is of a T-shaped structure rotated by 90 degrees, and the section shape of the rotating ring is matched with that of the ring groove; the special configuration of the ring groove and the rotating ring is advantageous for preventing the screw cap from falling off the screw head when the screw cap is rotated.

During specific work, the screw cap is rotated to the position where the through groove is aligned with the cutter groove, then the screwdriver bit penetrates through the through groove to enter the cutter groove to rotate the screw head and the screw cap together, and the screw is installed at the position where the screw needs to be installed through the operation; and then, the screw cap is rotated, so that the through groove in the screw cap is staggered with the cutter groove in the screw head, when the positioning groove is aligned with the through hole, the screw cap is fixed at a proper position on the outer wall of the screw head by penetrating the positioning part into the positioning groove and the through hole, the cutter groove is covered by the fixed screw cap, a screwdriver is prevented from being inserted into the cutter groove, the screw is protected, the anti-theft performance of the screw is effectively improved, and the screw is safe and reliable.

The utility model discloses in be equipped with the screw cap, through the adjustment screw cap for the screwdriver bit can pass and lead to the groove and enter into the inslot and rotate together screw head and screw cap, through the position between location portion set screw cap and the screwhead, the restriction screwdriver inserts the inslot, has effectively improved the theftproof performance of screw, safe and reliable.

(III) advantageous effects

1. The utility model provides a theftproof screw wherein is equipped with the screw cap, through the adjustment screw cap for the screwdriver bit can pass and lead to the groove and enter into the inslot and rotate together screw head and screw cap, through the position between location portion set screw cap and the screwhead, and the restriction screwdriver inserts the inslot, has effectively improved the theftproof performance of screw, safe and reliable.

2. The anti-theft screw provided by the utility model is characterized in that the screw cap is firstly rotated to the state that the through groove is aligned with the cutter groove, then the screwdriver head is used for entering the cutter groove through the through groove to rotate the screw head and the screw cap together, and the screw is arranged at the position to be installed through the operation; and then, the screw cap is rotated, so that the through groove in the screw cap is staggered with the cutter groove in the screw head, when the positioning groove is aligned with the through hole, the screw cap is fixed at a proper position on the outer wall of the screw head by penetrating the positioning part into the positioning groove and the through hole, the cutter groove is covered by the fixed screw cap, a screwdriver is prevented from being inserted into the cutter groove, the screw is protected, the anti-theft performance of the screw is effectively improved, and the screw is safe and reliable.

Drawings

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

FIG. 2 is a schematic view of the overall exploded structure of the present invention;

FIG. 3 is a schematic view of the overall cross-sectional structure of the present invention;

fig. 4 is a partially enlarged schematic view of a portion a in fig. 3 according to the present invention.

Wherein: 1 screw head, 11 knife groove, 12 positioning groove, 13 leading-in groove, 14 wedge-shaped groove, 15 reinforcing pad, 16 sliding groove, 17 limit plate, 18 limit spring, 19 ring groove, 2 screw rod, 3 screw cap, 31 through groove, 32 through hole, 33 rotating ring, 4 positioning part, 41 leading-in part, 42 wedge-shaped part and 43 limit groove.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1-4, the anti-theft screw comprises a screw head 1, a screw rod 2 and a screw cap 3, wherein one end of the screw head 1 is fixedly connected with the screw rod 2, and the other end of the screw head 1 is rotatably connected with the screw cap 3.

In the technical scheme, the screw cap 3 is adjusted, so that the screwdriver head can rotate the screw cap 3 and the screwdriver head 1 together, and screws can be conveniently installed; the screw cap 3 is adjusted after the screw is installed. So that the screw cap 3 protects the screw head.

The upper end face of the screw head 1 is provided with a blade groove 11 for the rotation of a universal screwdriver blade, the screw cap 3 is provided with a through groove 31 matched with the blade groove 11, and when the blade groove 11 is aligned with the through groove 31, the screw head 1 and the screw cap 3 can be synchronously rotated by the screwdriver blade.

In the above technical solution, the blade groove 11 and the through groove 31 are both matched with a screwdriver bit, and the size of the through groove 31 is not smaller than that of the blade groove 11, when the blade groove 11 and the through groove 31 are aligned, it is convenient for the screwdriver bit to extend into the blade groove 11 from the through groove 31 to rotate the screwdriver bit 1 and the screw cap 3 together, when the blade groove 11 and the through groove 31 are staggered, the screw cap 3 covers the blade groove 11, so that the screwdriver bit cannot extend into the blade groove 11 to work, and the screw cap 3 plays a role in protecting the screwdriver bit 1.

Referring to fig. 2-3, the side wall of the screw head 1 is symmetrically provided with positioning grooves 12, the side wall of the screw cap 3 is provided with through holes 32 matching with the positioning grooves 12, when the positioning grooves 12 are aligned with the through holes 32, the through grooves 31 and the knife grooves 11 are staggered, positioning portions 4 are installed in the positioning grooves 12, and the positioning portions 4 extend into the through holes 32.

In the above technical solution, when the through groove 31 is aligned with the knife groove 11, the positioning groove 12 is not aligned with the through hole 32, when the positioning groove 12 is aligned with the through hole 32, the through groove 31 is staggered with the knife groove 11, the positioning portion 4 penetrates into the positioning groove 12 and the through hole 32, the screw cap 3 is fixed at a proper position on the outer wall of the screw head 1, the fixed screw cap 3 covers the knife groove 11, and the screwdriver head is effectively prevented from entering the knife groove 11 to unscrew the screw, thereby protecting the screw.

The positioning groove 12 comprises a leading-in groove 13 and a wedge-shaped groove 14 which are arranged from inside to outside, a reinforcing pad 15 is fixed on the inner wall of the leading-in groove 13, two opposite side walls of the wedge-shaped groove 14 are symmetrically provided with sliding grooves 16, a limiting plate 17 is connected in the sliding grooves 16 in a sliding mode, and a limiting spring 18 is connected between the limiting plate 17 and the sliding grooves 16.

Referring to fig. 4, the positioning portion 4 includes a guiding portion 41 and a wedge portion 42, the guiding portion 41 is matched with the guiding groove 13, the wedge portion 42 is matched with the wedge groove 14, and a limiting groove 43 matched with the limiting plate 17 is arranged on the inner wall of the wedge portion 42 facing the sliding groove 16.

In the above technical scheme, when the positioning portion 4 is installed in the positioning groove 12 and the through hole 32, the guiding portion 41 is firstly clamped into the guiding groove 13, the reinforcing pad 15 is brought into a position where the reinforcing pad is not clamped with the guiding groove 13, the clamping between the guiding portion 41 and the guiding groove 13 is tightened, the wedge portion 42 is clamped into the wedge groove 14, the limiting plate 17 is clamped into the limiting groove 43, the three layers of clamping firmly fix the positioning portion 4 in the positioning groove 12, and the tail end of the positioning portion 4 is located in the through hole 32, so that the screw cap 3 is fixed on the outer wall of the screw head 1.

The size of the introduction portion 41 is smaller than that of the wedge portion 42, and accordingly, the size of the introduction groove 13 is smaller than that of the wedge portion 42; wherein the structure facilitates the snapping of the wedge portion 42 of the positioning portion 4 into the wedge groove 14 and the through hole 32.

The distance between the two stopper plates 17 is greater than the width of the introduction portion 41; this structure is favorable to making leading-in portion 41 pass from between two limiting plates 17 and enter into the introduction groove 13, limiting plate 17 is slowly extruded to wedge portion 42 for limiting plate 17 enters into sliding groove 16 and extrudes limiting spring 18, when limiting plate 17 and spacing groove 43 align, receives the effect that limiting spring 18 resets, makes limiting plate 17 pushed to the spacing inslot 43 and realizes spacingly, and at this moment, leading-in portion 41 tightly the joint is in introduction groove 13.

The side wall of the screw head 1 is provided with an annular groove 19, the inner wall of the screw cap 3 is provided with a rotating ring 33 matched with the annular groove 19, and the rotating ring 33 is rotationally connected with the annular groove 19; wherein, the rotating ring 33 is matched with the annular groove 19, so as to conveniently adjust the position between the through groove 31 of the screw cap 3 and the knife groove 11 of the screw head 1.

The section of the ring groove 19 is of a T-shaped structure which rotates by 90 degrees, and the section shape of the rotating ring 33 is matched with that of the ring groove 19; the special design of the annular groove 19 and the rotary ring 33 is advantageous, among other things, for preventing the screw cap 3 from falling off the screw head 1 when the screw cap 3 is rotated.

During specific work, the screw cap 3 is firstly rotated until the through groove 31 is aligned with the knife groove 11, then the screwdriver head penetrates through the through groove 31 to enter the knife groove 11 to rotate the screw head 1 and the screw cap 3 together, and the screw is installed at a position required to be installed through the operation; and then, the screw cap 3 is rotated, so that the through groove 31 on the screw cap 3 is staggered with the knife groove 11 on the screw head 1, when the positioning groove 12 is aligned with the through hole 32, the positioning part 4 penetrates into the positioning groove 12 and the through hole 32, the screw cap 3 is fixed at a proper position on the outer wall of the screw head 1, the fixed screw cap 3 covers the knife groove 11, a screwdriver is prevented from being inserted into the knife groove 11, the screw is protected, the anti-theft performance of the screw is effectively improved, and safety and reliability are realized.

The utility model discloses in be equipped with screw cap 3, through adjustment screw cap 3 for the screwdriver bit can pass through groove 31 and enter into sword inslot 11 and rotate together screw head 1 and screw cap 3, through the position between 4 fixed screw cap 3 of location portion and the screwhead 1, restriction screwdriver inserts sword inslot 11, has effectively improved the theftproof performance of screw, safe and reliable.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an anti-theft screw, includes screwhead (1), screw rod (2) and screw cap (3), its characterized in that: one end of the screw head (1) is fixedly connected with the screw rod (2), and the other end of the screw head (1) is rotatably connected with a screw cap (3);

the upper end face of the screw head (1) is provided with a cutter groove (11) for a universal screwdriver cutter head to rotate, the screw cap (3) is provided with a through groove (31) matched with the cutter groove (11), and when the cutter groove (11) is aligned with the through groove (31), the screw head (1) and the screw cap (3) can be synchronously rotated by the screwdriver cutter head;

the side wall of the screw head (1) is symmetrically provided with positioning grooves (12), the side wall of the screw cap (3) is provided with through holes (32) matched with the positioning grooves (12), when the positioning grooves (12) are aligned with the through holes (32), the through grooves (31) and the knife grooves (11) are staggered, positioning portions (4) are installed in the positioning grooves (12), and the positioning portions (4) extend into the through holes (32).

2. A theft-proof screw, as claimed in claim 1, wherein: the locating groove (12) comprises a leading-in groove (13) and a wedge-shaped groove (14) which are arranged from inside to outside, a reinforcing pad (15) is fixed on the inner wall of the leading-in groove (13), two opposite side walls of the wedge-shaped groove (14) are symmetrically provided with sliding grooves (16), a limiting plate (17) is connected in the sliding grooves (16) in a sliding mode, and a limiting spring (18) is connected between the limiting plate (17) and the sliding grooves (16).

3. A theft-proof screw, as claimed in claim 2, wherein: location portion (4) are including leading-in portion (41) and wedge portion (42), leading-in portion (41) with leading-in groove (13) phase-match, wedge portion (42) with wedge groove (14) phase-match, wedge portion (42) just to the inner wall of sliding tray (16) be equipped with limiting plate (17) assorted spacing groove (43).

4. A theft-proof screw, as claimed in claim 3, wherein: the size of the introduction portion (41) is smaller than the size of the wedge portion (42), and accordingly, the size of the introduction groove (13) is smaller than the size of the wedge portion (42).

5. A theft-proof screw, as claimed in claim 1, wherein: the lateral wall of screwhead (1) is equipped with annular (19), the inner wall of screw cap (3) be equipped with annular (19) assorted swivel becket (33), swivel becket (33) with annular (19) rotate to be connected.

6. An antitheft screw as described in claim 5 wherein: the section of the ring groove (19) is of a T-shaped structure which rotates by 90 degrees, and the section shape of the rotating ring (33) is matched with that of the ring groove (19).