CN217207243U

CN217207243U - Anti-theft screw with protective cover

Info

Publication number: CN217207243U
Application number: CN202220883090.3U
Authority: CN
Inventors: 李勇
Original assignee: Zhejiang Tianyuan Metal Products Co ltd
Current assignee: Zhejiang Tianyuan Metal Products Co ltd
Priority date: 2022-04-15
Filing date: 2022-04-15
Publication date: 2022-08-16
Anticipated expiration: 2032-04-15

Abstract

The utility model discloses an anti-theft screw with a protective cover, which comprises a screw head, a screw rod, a protective cover, an installation block, an installation groove, an installation hole, an elastic supporting mechanism, an installation opening, a fixture block, a twisting block, an anti-slip bayonet and an anti-slip convex block, wherein the screw rod is fixedly arranged at the bottom of the screw head, the protective cover is sleeved at the outer side of the screw head, an annular installation block is fixedly arranged at the inner side of the lower end of the protective cover, the annular installation groove is arranged at the lower side part of the screw head, the installation block can be rotatably clamped at the inner side of the installation groove, the installation holes which longitudinally penetrate through the screw head are arranged at the left side and the right side of the screw head, each installation hole can be penetrated with the elastic supporting mechanism in a sliding way, the elastic supporting mechanism comprises a telescopic rod, a cushion block, a push rod and a spring, compared with the prior art, the screw can have the anti-theft function, and the practicability and the safety of the screw are improved, simple structure, convenient use and convenient popularization and application.

Description

Anti-theft screw with protective cover

[ technical field ] A

The utility model relates to a technical field of fastener, especially a take anti-theft screw of protection casing.

[ background of the invention ]

The fastener is a mechanical part which is used for fastening and connecting and has wide application, the fastener has wide application industries, including energy, electronics, electrical appliances, machinery, chemical engineering, metallurgy, dies, hydraulic pressure and the like, the screw is a common fastener and is widely used on machinery, electrical appliances and buildings, the common material is metal or plastic, the screw is cylindrical, grooves with concave and convex surfaces engraved are called as threads, the existing screw does not have an anti-theft function, and objects fixed by the screw are easily stolen by useful and conscious people, so that the screw with the anti-theft function is needed to be provided.

[ Utility model ] content

The utility model aims at solving the problems in the prior art and providing the anti-theft screw with the protective cover.

In order to achieve the purpose, the utility model provides an anti-theft screw with a protective cover, which comprises a pin head, a pin rod, a protective cover, an installation block, an installation groove, an installation hole, an elastic supporting mechanism, an installation opening, a clamping block, a twisting block, an anti-slip bayonet and an anti-slip block, wherein the bottom of the pin head is fixedly provided with the pin rod, the outer side of the pin head is sleeved with the protective cover, the inner side of the lower end of the protective cover is fixedly provided with an annular installation block, the lower side part of the pin head is provided with the annular installation groove, the installation block can be rotationally clamped at the inner side of the installation groove, the bottom of the pin head is positioned at the left side and the right side of the pin rod and is provided with the installation hole which longitudinally penetrates through the pin head, each installation hole can be penetrated with the elastic supporting mechanism in a sliding way, the elastic supporting mechanism comprises a telescopic rod, a cushion block, a push rod and a spring, the lower end of the telescopic rod is fixedly provided with the cushion block, a push rod is fixedly arranged at the upper end of the telescopic rod, a spring is sleeved outside the telescopic rod, the push rod is in axial sliding fit with the mounting hole, the upper part of the left side and the upper part of the right side of the nail head are both provided with vertically arranged mounting ports, the upper ends of the mounting ports are communicated with the upper end of the nail head, the side part of the mounting opening is communicated with the side part of the mounting hole, a clamping block can be arranged in each mounting opening in a sliding way, the clamping block is fixedly connected with the push rod, two twisting blocks are fixedly arranged on the inner side wall of the protective cover and are rotationally and symmetrically arranged along the axis of the protective cover, the anti-skidding bayonet socket is characterized in that the twisting block and the clamping block are located at the same horizontal height, each anti-skidding bayonet socket is formed in the side portion of the clamping block, each anti-skidding lug matched with the anti-skidding bayonet socket is fixedly arranged on the side portion of the twisting block, and the anti-skidding lug is movably clamped on the inner side of the anti-skidding bayonet socket.

Preferably, the protective cover is of a cylindrical design, and a screwdriver groove is formed in the top of the protective cover.

Preferably, the natural length of the elastic support mechanism is greater than the depth of the mounting hole.

Preferably, the diameter of the telescopic rod is smaller than that of the push rod.

Preferably, the horizontal height of the lower end of the push rod is higher than that of the lower end of the nail head, and the cross section of the mounting hole and the cross section of the push rod are both square.

The utility model has the advantages that: the utility model discloses a bottom at the pin fin is located the left side and the right side of nail pole and all is seted up the mounting hole that vertically runs through the pin fin, every all can slide in the mounting hole and wear to be equipped with elastic support mechanism, push rod and mounting hole axial sliding fit, the left upper portion of pin fin and the upper portion on right side all are seted up the installing port of vertical setting, the upper end of installing port communicates with each other with the upper end of pin fin, the lateral part of installing port communicates with the lateral part of mounting hole, every all can slide in the installing port and be equipped with the fixture block, the fixture block is fixed with the push rod and is connected, the inside wall of protection casing is fixed and is equipped with two and twists the piece, two it sets up with the axis rotational symmetry of protection casing to twist the piece, it is located same level to twist piece and fixture block, the lateral part of each fixture block has all been seted up anti-skid bayonet socket, each the lateral part of twisting piece all is fixed and is equipped with anti-skid block matched with anti-skid bayonet socket, the anti-skid block is movably clamped on the inner side of the anti-skid bayonet, when the anti-skid block is used, a screwdriver is inserted into a screwdriver groove at the top of the protective cover to install the screw, when the protective cover rotates, the twisting block is contacted with the clamping block, so that the anti-skid block is clamped into the inner side of the anti-skid bayonet, the nail head can rotate along with the protective cover, when the nail head is gradually close to the surface of an object, the cushion block is extruded by the object, the cushion block is lifted and retracted into the installation hole, the spring and the telescopic rod are compressed and shortened, the spring gives the push rod upward sliding potential energy, just because the anti-skid block is clamped in the anti-skid bayonet, the push rod cannot slide upwards, after the screw is installed, the protective cover is slightly rotated anticlockwise, so that the anti-skid block is separated from the anti-skid block, under the action of the spring, the push rod slides upwards along the installation hole, the clamping block of the push rod drives the installation hole to slide upwards, the clamping block is located above the twisting block, so that when the protective cover is rotated, the protective cover can only idle due to the fact that the twisting block lacks an acting point, the screw cannot be detached, and the anti-theft function is achieved. Compared with the prior art, can let the screw possess the function of theftproof, promote the practicality and the security of screw, simple structure, convenient to use, facilitate promotion is used.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

[ description of the drawings ]

Fig. 1 is a schematic structural view of an anti-theft screw with a protective cover according to the present invention.

Fig. 2 is a top view of the anti-theft screw with a protective cover of the present invention.

In the figure: 1-nail head, 2-nail rod, 3-protective cover, 4-mounting block, 5-mounting groove, 6-mounting hole, 7-elastic supporting mechanism, 71-telescopic rod, 72-cushion block, 73-push rod, 74-spring, 8-mounting port, 9-clamping block, 10-twisting block, 11-anti-skid bayonet and 12-anti-skid projection.

[ detailed description ] embodiments

Referring to fig. 1 and 2, the utility model relates to a take anti-theft screw of protection casing, including pin fin 1, nail pole 2, protection casing 3, installation piece 4, mounting groove 5, mounting hole 6, elastic support mechanism 7, installing port 8, fixture block 9, wrench movement piece 10, anti-skidding bayonet 11 and skid proof block 12, the fixed nail pole 2 that is equipped with in bottom of pin fin 1, the outside cover of pin fin 1 is equipped with protection casing 3, the inboard of lower extreme of protection casing 3 is fixed and is equipped with annular installation piece 4, annular mounting groove 5 has been seted up to the lower side of pin fin 1, the rotatable card of installation piece 4 is established in the inboard of mounting groove 5, the bottom of pin fin 1 is located the left side and the right side of nail pole 2 and all sets up the mounting hole 6 that vertically runs through pin fin 1, every elastic support mechanism 7 all can slide in the mounting hole 6 and wear to be equipped with, elastic support mechanism 7 includes telescopic link 71, The lower end of the telescopic rod 71 is fixedly provided with the cushion block 72, the upper end of the telescopic rod 71 is fixedly provided with the push rod 73, the outer side of the telescopic rod 71 is sleeved with the spring 74, the push rod 73 is axially and slidably matched with the mounting hole 6, the upper parts of the left side and the right side of the nail head 1 are respectively provided with a vertically arranged mounting port 8, the upper end of the mounting port 8 is communicated with the upper end of the nail head 1, the side part of the mounting port 8 is communicated with the side part of the mounting hole 6, each mounting port 8 is internally provided with a fixture block 9 in a sliding manner, the fixture block 9 is fixedly connected with the push rod 73, the inner side wall of the protective cover 3 is fixedly provided with two twisting blocks 10, the two twisting blocks 10 are rotationally and symmetrically arranged by the axis of the protective cover 3, the twisting blocks 10 and the fixture blocks 9 are positioned at the same horizontal height, the side part of each fixture block 9 is provided with an anti-slip bayonet 11, the lateral part of each twisting block 10 is fixedly provided with an anti-slip bump 12 matched with the anti-slip bayonet 11, the anti-slip bump 12 is movably clamped on the inner side of the anti-slip bayonet 11, the protective cover 3 is in a cylindrical design, the top of the protective cover 3 is provided with a screwdriver groove, the natural length of the elastic supporting mechanism 7 is greater than the depth of the mounting hole 6, the diameter of the telescopic rod 71 is smaller than that of the push rod 73, the horizontal height of the lower end of the push rod 73 is higher than that of the lower end of the pin head 1, and the cross section of the mounting hole 6 and the cross section of the push rod 73 are both square.

The utility model discloses the working process: the protective cover 3 is rotated by inserting a screwdriver into a screwdriver groove at the top of the protective cover 3, when the protective cover 3 rotates, the twisting block 10 is attached to the clamping block 9, so that the anti-skid lugs 12 are clamped into the inner side of the anti-skid bayonets 11, the nail head 1 can rotate along with the protective cover 3, the nail rod 2 is screwed into a hole of an object, when the nail head 1 is gradually close to the surface of the object, the cushion block 72 is extruded by the object, the cushion block 72 is lifted and retracted into the mounting hole 6, the spring 74 and the telescopic rod 71 are both compressed and shortened, the spring 74 gives potential energy to the push rod 73 to slide upwards, just because the anti-skid lugs 12 are clamped in the anti-skid bayonets 11, the push rod 73 cannot slide upwards, after the screw is installed, the protective cover 3 is slightly rotated anticlockwise, so that the anti-skid lugs 12 are separated from the anti-skid bayonets 11, and under the elastic force of the spring 74, the push rod 73 slides upwards along the mounting hole 6, the push rod 73 drives the clamping block 9 to slide upwards in the mounting opening 8, so that the clamping block 9 is located above the twisting block 10, and thus, when the protective cover 3 is rotated, the protective cover 3 can only idle due to the lack of an acting point of the twisting block 10, so that the screw cannot be detached, and an anti-theft function is achieved. Compared with the prior art, can let the screw possess the function of theftproof, promote the practicality and the security of screw, simple structure, convenient to use, facilitate promotion is used.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any is right the utility model discloses scheme after simply changing all belongs to the protection scope of the utility model.

Claims

1. The utility model provides a take antitheft screw of protection casing which characterized in that: comprises a nail head (1), a nail rod (2), a protective cover (3), an installation block (4), an installation groove (5), an installation hole (6), an elastic support mechanism (7), an installation opening (8), a clamping block (9), a twisting block (10), an anti-skidding bayonet (11) and an anti-skidding lug (12), wherein the nail rod (2) is fixedly arranged at the bottom of the nail head (1), the protective cover (3) is sleeved outside the nail head (1), the annular installation block (4) is fixedly arranged on the inner side of the lower end of the protective cover (3), the annular installation groove (5) is arranged at the lower side part of the nail head (1), the installation block (4) can be rotatably clamped inside the installation groove (5), the installation holes (6) which longitudinally penetrate through the nail head (1) are respectively formed in the left side and the right side of the nail rod (2) at the bottom of the nail head (1), and the elastic support mechanism (7) can be slidably arranged in each installation hole (6), the elastic support mechanism (7) comprises a telescopic rod (71), a cushion block (72), a push rod (73) and a spring (74), the cushion block (72) is fixedly arranged at the lower end of the telescopic rod (71), the push rod (73) is fixedly arranged at the upper end of the telescopic rod (71), the spring (74) is sleeved on the outer side of the telescopic rod (71), the push rod (73) is in axial sliding fit with the mounting hole (6), vertically-arranged mounting ports (8) are respectively formed in the upper portion of the left side and the upper portion of the right side of the nail head (1), the upper end of each mounting port (8) is communicated with the upper end of the corresponding nail head (1), the side portion of each mounting port (8) is communicated with the side portion of the corresponding mounting hole (6), each mounting port (8) is internally provided with a clamping block (9) in a sliding manner, the clamping block (9) is fixedly connected with the push rod (73), two twisting blocks (10) are fixedly arranged on the inner side wall of the protective cover (3), two turning round piece (10) and preventing the axis rotational symmetry setting of guard shield (3), turning round piece (10) and fixture block (9) and being located same level, every anti-skidding bayonet socket (11), every have all been seted up to the lateral part of fixture block (9) the lateral part of turning round piece (10) all is fixed be equipped with anti-skidding bayonet socket (11) matched with anti-skidding lug (12), the inboard at anti-skidding bayonet socket (11) is established to anti-skidding lug (12) activity card.

2. The antitheft screw with protective cover of claim 1, characterized in that: the protective cover (3) is in a cylindrical design, and a screwdriver groove is formed in the top of the protective cover (3).

3. The antitheft screw with protective cover of claim 1, characterized in that: the natural length of the elastic supporting mechanism (7) is larger than the depth of the mounting hole (6).

4. The antitheft screw with protective cover of claim 1, characterized in that: the diameter of the telescopic rod (71) is smaller than that of the push rod (73).

5. A theft-proof screw with shield as claimed in any one of claims 1 to 4, characterized in that: the horizontal height of the lower end of the push rod (73) is higher than that of the lower end of the nail head (1), and the cross section of the mounting hole (6) and the cross section of the push rod (73) are both square.