CN216842585U

CN216842585U - Anti-disassembly one-way self-tapping locking screw

Info

Publication number: CN216842585U
Application number: CN202123089909.3U
Authority: CN
Inventors: 李勇
Original assignee: Zhejiang Tianyuan Metal Products Co ltd
Current assignee: Zhejiang Tianyuan Metal Products Co ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-06-28
Anticipated expiration: 2031-12-09

Abstract

The utility model discloses an anti-disassembly one-way self-tapping locking screw, which comprises a screw head and a screw rod, wherein the screw rod comprises a main body rod section and a self-drilling pointed tail which are arranged one above the other, the outer wall of the main body rod section is provided with an external thread, the top end of the main body rod section is coaxially fixed on the bottom surface of the screw head, the top surface of the screw head is provided with an anti-theft lug, one end surface of the anti-theft lug is provided with a flat surface which can be abutted by a screwdriver, while the height of the other end is gradually reduced and forms a tail contraction, when the screwdriver is abutted against the flat surface, the screw can be forced to rotate along the tightening direction of the external thread by the anti-theft lug when the screwdriver is abutted against the flat surface, and when the screwdriver is reversely rotated along the tightening direction of the external thread, the screwdriver has no force application part, thereby achieving the effect of one-way screw in installation, simple structure, novel design, the theftproof is respond well.

Description

Anti-disassembly one-way self-tapping locking screw

[ technical field ] A method for producing a semiconductor device

The utility model relates to a technical field of screw, especially an one-way self tapping locking screw's of anti-disassembly technical field.

[ background of the invention ]

The application range of the screw as the main fastener almost covers all the social production fields of industry, civil use and the like, however, due to special conditions, such as certain products related to requirements of intellectual property, commercial confidentiality and the like or anti-theft device products for storing valuables, the screw is often designed into an anti-disassembly structure.

[ Utility model ] content

The utility model aims at solving the problem in the prior art, providing an one-way self tapping locking screw of anti-disassembly, simple structure, the modern design, it is respond well to prevent burglary.

In order to realize the above-mentioned purpose, the utility model provides an one-way self tapping locking screw of anti-disassembly, including pin fin and nail pole, the nail pole includes the main part pole section that sets up one on the other and bores the pointed tail certainly, be equipped with the external screw thread on the outer wall of main part pole section, the bottom surface at the pin fin is fixed to the top of main part pole section is coaxial, the top surface of pin fin is equipped with the theftproof lug, the one end terminal surface of theftproof lug is equipped with the straight face that can supply the screwdriver to support and highly reduce gradually and form the tail that contracts of the other end, supports when the screwdriver and presses accessible theftproof lug forces the screw to rotate along the tightening direction of external screw thread during the straight face.

Preferably, the end of the tail-contracting anti-theft bump provided with the straight surface is bent and close to the end of the tail-contracting anti-theft bump provided with the straight surface.

Preferably, the edge of the end face of the flat surface is provided with a convex edge so as to form a socket with a U-shaped cross section together with the flat surface.

Preferably, the flange is provided with a limiting component for limiting the screwdriver from being released from the socket in the opposite direction to the screwing direction of the external thread.

As preferred, spacing subassembly includes pivot, torsional spring and baffle, pivot rotatable coupling is at the top surface of chimb, the torsional spring cover is established outside the pivot and both ends are connected with the top surface of chimb and the one end of baffle respectively, the torsional spring has the trend that the other end that elasticity promoted the baffle is close to straight face.

Preferably, the other end of the baffle is provided with a round angle.

Preferably, the nail head is a countersunk head, and a plurality of salient points are arranged on the outer wall of the nail head.

The utility model has the advantages that: the utility model discloses a top surface at the pin fin sets up one end terminal surface and has the flat theftproof lug that can supply the screwdriver to lean on to make the other end of theftproof lug highly reduce gradually and form the tail that contracts, can force the screw to rotate along the tightening direction of external screw thread through the theftproof lug when the screwdriver is in the same direction to pressing flat straight, and when the screwdriver view is rotated against the reverse direction of the tightening direction of external screw thread, make the screwdriver not have the application of force position again, thereby reach the effect of one-way screw in installation, simple structure, novel design, the theftproof is effectual; the convex edge is arranged on the edge of the end face of the flat surface, so that the convex edge and the flat surface form a socket with a U-shaped cross section together, and the screwdriver is prevented from being separated from the front side and the rear side of the flat surface when rotating in the forward direction; the limiting assembly consisting of the rotating shaft, the torsion spring and the baffle is arranged on the convex edge, so that the screwdriver can be limited to slip from the socket by using elasticity, and the elasticity of the torsion spring is not enough to support the screwdriver to drive the screw to reversely rotate and to be screwed out from the part to be fixed.

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 front view of the anti-disassembly one-way self-tapping locking screw of the present invention;

fig. 2 is a top view of the anti-disassembly one-way self-tapping locking screw of the utility model.

In the figure: 1-nail head, 11-anti-theft bump, 111-flat surface, 112-tail, 12-convex edge, 13-limit component, 131-rotating shaft, 132-torsion spring, 133-baffle, 14-salient point, 2-nail rod, 21-main body rod section, 22-self-drilling pointed tail and 23-external thread.

[ detailed description ] embodiments

Referring to fig. 1 and 2, the utility model relates to an one-way self tapping locking screw of anti-disassembly, including pin fin 1 and nail pole 2, nail pole 2 includes the main part pole section 21 that sets up one on the other and from the drill point tail 22, be equipped with external screw thread 23 on the outer wall of main part pole section 21, the coaxial bottom surface of fixing at pin fin 1 in top of main part pole section 21, the top surface of pin fin 1 is equipped with theftproof lug 11, the one end terminal surface of theftproof lug 11 is equipped with the straight face 111 that can supply the screwdriver to lean on and the height of the other end reduces gradually and forms the tail 112 that contracts, and accessible theftproof lug 11 forces the screw to rotate along the tightening direction of external screw thread 23 when the screwdriver supports the pressure straight face 111.

The end of the tail 112 is bent toward and close to the end of the anti-theft projection 11 having the flat surface 111.

The edge of the end face of the flat surface 111 is provided with a convex edge 12 so as to form a socket with a U-shaped cross section together with the flat surface 111.

The flange 12 is provided with a stop assembly 13 for limiting the screwdriver from coming out of the socket against the tightening direction of the external thread 23.

Spacing subassembly 13 includes pivot 131, torsional spring 132 and baffle 133, pivot 131 rotatable coupling is at the top surface of chimb 12, torsional spring 132 cover is established outside pivot 131 and both ends are connected with the top surface of chimb 12 and the one end of baffle 132 respectively, torsional spring 132 has the trend that the other end that elasticity promoted baffle 133 is close to flat surface 111.

The other end of the baffle 133 is provided with a round angle.

The nail head 1 is a countersunk head, and a plurality of salient points 14 are arranged on the outer wall.

The utility model discloses the working process:

firstly, a preset hole is processed at a designated position of a member to be fixed. Next, the self-drilling tip 22 is aligned with the predetermined hole, and the screwdriver is placed on the flat surface 111 and pressed in the forward direction, so that the screw is gradually rotated along the tightening direction of the external thread 23, and the corresponding internal thread is screwed on the inner wall of the predetermined hole, thereby completing the assembly of the screw. Further, when the driver is gradually rotated at the flat surface 111 against the tightening direction of the male screw 23, the driver has no force-applying surface, easily slides along the tail 112 to the top surface of the antitheft projection 11, and then drops back to the initial position after one rotation.

The utility model discloses a top surface at the pin fin sets up one end terminal surface and has the flat theftproof lug that can supply the screwdriver to lean on to make the other end of theftproof lug highly reduce gradually and form the tail that contracts, can force the screw to rotate along the tightening direction of external screw thread through the theftproof lug when the screwdriver is in the same direction to pressing flat straight, and when the screwdriver view is rotated against the reverse direction of the tightening direction of external screw thread, make the screwdriver not have the application of force position again, thereby reach the effect of one-way screw in installation, simple structure, novel design, the theftproof is effectual; the convex edge is arranged on the edge of the end face of the flat surface, so that the convex edge and the flat surface form a socket with a U-shaped cross section together, and the screwdriver is prevented from being separated from the front side and the rear side of the flat surface when rotating in the forward direction; the limiting assembly consisting of the rotating shaft, the torsion spring and the baffle is arranged on the convex edge, so that the screwdriver can be limited to slip from the socket by using elasticity, and the elasticity of the torsion spring is not enough to support the screwdriver to drive the screw to reversely rotate and to be screwed out from the part to be fixed.

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

Claims

1. The utility model provides an one-way self tapping locking screw of anti-disassembly which characterized in that: the anti-theft screw comprises a screw head (1) and a screw rod (2), wherein the screw rod (2) comprises a main body rod section (21) and a self-drilling tip tail (22), the main body rod section (21) is arranged one above the other, an external thread (23) is arranged on the outer wall of the main body rod section (21), the top end of the main body rod section (21) is coaxially fixed on the bottom surface of the screw head (1), an anti-theft lug (11) is arranged on the top surface of the screw head (1), a flat surface (111) which can be abutted by a screw driver is arranged on one end face of the anti-theft lug (11), the height of the other end of the anti-theft lug is gradually reduced to form a tail (112), and when the screw driver abuts against the flat surface (111), the screw can be forced to rotate along the screwing direction of the external thread (23) through the anti-theft lug (11).

2. A disassembly prevention one-way thread forming locking screw as recited in claim 1, wherein: the tail (112) is bent towards and close to one end of the anti-theft bump (11) provided with the straight surface (111).

3. A disassembly prevention one-way thread forming locking screw as recited in claim 1, wherein: the edge of the end face of the flat surface (111) is provided with a convex edge (12) so as to form a socket with a U-shaped cross section together with the flat surface (111).

4. A disassembly prevention one-way thread forming locking screw as recited in claim 3, wherein: the convex edge (12) is provided with a limiting component (13) which limits the screwdriver from falling out of the socket against the screwing direction of the external thread (23).

5. A disassembly prevention one-way thread forming locking screw as recited in claim 4, wherein: spacing subassembly (13) are including pivot (131), torsional spring (132) and baffle (133), pivot (131) rotatable coupling is at the top surface of chimb (12), torsional spring (132) cover is established outside pivot (131) and both ends are connected with the top surface of chimb (12) and the one end of baffle (133) respectively, torsional spring (132) have the trend that the other end that elasticity promoted baffle (133) is close to straight face (111).

6. A disassembly prevention one-way thread forming locking screw as recited in claim 5, wherein: and the other end of the baffle (133) is provided with a round angle.

7. A disassembly-resistant one-way thread forming screw as claimed in any one of claims 1 to 6, wherein: the nail head (1) is a countersunk head, and a plurality of salient points (14) are arranged on the outer wall.