CN212690567U - Anti-theft self-tapping screw - Google Patents
Anti-theft self-tapping screw Download PDFInfo
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- CN212690567U CN212690567U CN202020637279.5U CN202020637279U CN212690567U CN 212690567 U CN212690567 U CN 212690567U CN 202020637279 U CN202020637279 U CN 202020637279U CN 212690567 U CN212690567 U CN 212690567U
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- tapping screw
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Abstract
The utility model provides a theftproof self-tapping screw. The theftproof self-tapping nail includes the self-tapping nail body and locking mechanical system, the self-tapping nail body includes the head of a nail, gomphosis pole section, the theftproof pole section, screw rod section and toper pin fin, the cross-shaped groove has been seted up on the head of a nail, and the bottom fixed mounting of head of a nail has gomphosis pole section, and the other end fixed mounting of gomphosis pole section has the theftproof pole section, the other end fixed mounting of theftproof pole section has the screw rod section, and the other end fixed mounting of screw rod section has the toper pin fin, a plurality of the same locking mechanical system of specification is installed respectively in a plurality of installation cavities that the theftproof pole section was seted up, and the installation cavity annular sets up on the theftproof pole section, locking mechanical system includes trapezoidal steel bloom of gomphosis and spring, the one end of the trapezoidal steel bloom of gomphosis rotates through the round pin axle to be installed in the installation. The utility model provides a theftproof self-tapping screw has difficult quilt and unscrews and the effectual advantage of theftproof.
Description
Technical Field
The utility model relates to a hardware component technical field especially relates to a theftproof self-tapping screw.
Background
The self-tapping screw is a threaded fastener which self-drills a mating female thread in a pre-drilled hole of a metal or non-metal material, and has high anti-loosening capability in combination and can be assembled and disassembled because it is self-formed or can tap a mating thread. On the small screw, the size, thread type, head type and tapping performance of the small screw are high in tensile force in engineering application, and the characteristics of single piece and single side combination are unlimited. The self-tapping screw material can be divided into carbon steel and stainless steel, wherein the carbon steel material is mainly 1022 medium carbon steel and is usually used on doors, windows and iron sheets. The head part is a bearing surface formed by a part with one end made into an enlarged shape.
The existing common self-tapping screw on the market can be screwed or unscrewed by using conventional tools such as a wrench or a screwdriver and the like, and particularly can be used for thieves when the self-tapping screw is used outdoors.
Therefore, there is a need to provide an anti-theft self-tapping screw to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide a difficult quilt is unscrewed and effectual theftproof self-tapping screw of theftproof.
In order to solve the technical problem, the utility model provides a theftproof self-tapping screw includes: self tapping nail body and locking mechanical system, the self tapping nail body is including the head of a nail, gomphosis pole section, the theftproof pole section, screw rod section and toper pin fin, the bottom fixed mounting of head of a nail has gomphosis pole section, and the other end fixed mounting of gomphosis pole section has the theftproof pole section, the other end fixed mounting of theftproof pole section has the screw rod section, and the other end fixed mounting of screw rod section has the toper pin fin, a plurality of specification-identical locking mechanical system installs respectively in a plurality of installation cavities that the theftproof pole section was seted up, and the installation cavity annular sets up on the theftproof pole section.
Preferably, locking mechanical system includes gomphosis trapezoidal steel piece and spring, and the one end of gomphosis trapezoidal steel piece is installed in the installation cavity through round pin axle rotation, and the inner wall of gomphosis trapezoidal steel piece opposite side passes through the inner wall elastic connection of spring and installation cavity.
Preferably, 3-4 locking mechanisms are arranged on the anti-theft rod section.
Preferably, the tapered nail head is of a hollow structure, and the head of the tapered nail head is provided with a cross-shaped open slot.
Preferably, an excessive cambered surface is arranged between the embedded rod section and the anti-theft rod section.
Preferably, the nail cap is provided with a cross-shaped groove.
Preferably, the screw cap, the embedded rod section, the antitheft rod section, the threaded rod section and the conical head in the self-tapping screw body are coaxially and integrally formed.
Compared with the prior art, the utility model provides a theftproof self-tapping screw has following beneficial effect:
1. after the self-tapping screw is completely fixed in an article, the upper half part of the embedded trapezoidal steel block springs outwards under the action of the spring and is in close contact with and embedded in the fixed article, so that when the self-tapping screw rotates reversely, a thief cannot take off the self-tapping screw because the embedded trapezoidal steel block is embedded in the fixed article;
2. the utility model discloses back in self-tapping screw is at theftproof pole section screw in installation article, continue to rotate and make in the gomphosis pole section imbeds the installation article, and this in-process because the toper pin fin is hollow structure and has seted up the cross open slot, suffers the back of forcing, and the toper pin fin is suppressed and is pressed and open to the theftproof ability of self-tapping screw has further been improved.
Drawings
Fig. 1 is a schematic structural view of a preferred embodiment of the anti-theft self-tapping screw provided by the present invention;
fig. 2 is a schematic sectional view of the antitheft rod section shown in fig. 1.
Reference numbers in the figures: 1. the self-tapping screw comprises a self-tapping screw body, 11, a screw cap, 12, an embedded rod section, 13, an anti-theft rod section, 14, a threaded rod section, 15, a conical screw head, 2, a locking mechanism, 21, an embedded trapezoidal steel block, 22, a spring, 3, an installation cavity, 4, a cross open slot, 5, a transition cambered surface, 6 and a cross-shaped groove.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and embodiments.
Please refer to fig. 1 and fig. 2 in combination, wherein fig. 1 is a schematic structural diagram of a preferred embodiment of the anti-theft self-tapping screw provided by the present invention; fig. 2 is a schematic sectional view of the antitheft rod section shown in fig. 1. The anti-theft self-tapping screw includes: a self-tapping nail body 1 and a locking mechanism 2.
In the specific implementation process, as shown in fig. 1 and 2, the self-tapping screw body 1 includes a screw cap 11, an embedded rod section 12, an anti-theft rod section 13, a threaded rod section 14 and a tapered screw head 15, the screw cap 11 is provided with a cross-shaped groove 6, the bottom of the screw cap 11 is fixedly provided with the embedded rod section 12, the other end of the embedded rod section 12 is fixedly provided with the anti-theft rod section 13, an excessive arc surface 5 is arranged between the embedded rod section 12 and the anti-theft rod section 13, the other end of the anti-theft rod section 13 is fixedly provided with the threaded rod section 14, the other end of the threaded rod section 14 is fixedly provided with the tapered screw head 15, and the screw cap 11, the embedded rod section 12, the anti-theft rod section 13, the threaded rod section 14 and the tapered screw head 15 in the self-tapping screw body 1 are coaxial; the excessive cambered surface 5 is arranged between the embedded rod section 12 and the anti-theft rod section 13, so that the embedded rod section 12 is smooth and self-tapping to enter a fixed object.
Referring to fig. 1, a plurality of locking mechanisms 2 with the same specification are respectively installed in a plurality of installation cavities 3 formed in an anti-theft rod section 13, the installation cavities 3 are annularly arranged on the anti-theft rod section 13, 3-4 locking mechanisms 2 are formed in the anti-theft rod section 13, each locking mechanism 2 comprises an embedded trapezoidal steel block 21 and a spring 22, one end of each embedded trapezoidal steel block 21 is rotatably installed in the installation cavity 3 through a pin shaft, and the inner wall of the other side of each embedded trapezoidal steel block 21 is elastically connected with the inner wall of the installation cavity 3 through the spring 22.
It should be noted that: make the self-tapping screw rotatory enter into fixed article through the cross bottle opener on, when the theftproof pole section 13 just got into the installation cavity in, the upper half of gomphosis trapezoidal steel piece 21 compressed spring 22 under the extrusion of installation cavity, after the self-tapping screw is fixed completely to the article, because gomphosis trapezoidal steel piece 21 is under the effect of spring 22, the upper half of gomphosis trapezoidal steel piece 21 springs outward and closely contacts with fixed article, gomphosis to when the follow-up derotation of self-tapping screw, because the gomphosis of gomphosis trapezoidal steel piece 21 is in fixed article, consequently the thief can't take off the self-tapping screw.
Referring to fig. 1, the tapered nail head 15 is a hollow structure, the head of the tapered nail head 15 is provided with a cross-shaped open slot 4, the self-tapping nail continues to rotate after the anti-theft rod section 13 is screwed into the installation object, so that the embedded rod section 12 is embedded into the installation object, and in the process, because the tapered nail head 15 is a hollow structure and is provided with the cross-shaped open slot 4, the tapered nail head 15 is pressed and opened after being pressed by strong pressure, so that the anti-theft capability of the self-tapping nail is further improved.
The utility model provides a working principle of theftproof tapping screw as follows:
the self-tapping screw is rotated to enter a fixed object through the cross screwdriver, when the anti-theft rod section 13 initially enters the installation cavity, the upper half part of the embedded trapezoidal steel block 21 compresses the spring 22 under the extrusion of the installation cavity, after the self-tapping screw is completely fixed in an object, because the upper half part of the embedded trapezoidal steel block 21 springs outwards under the action of the spring 22 and is tightly contacted and embedded with the fixed object, when the self-tapping screw is subsequently reversely rotated, because the embedded trapezoidal steel block 21 is embedded in the fixed object, a thief cannot take off the self-tapping screw, after the anti-theft rod section 13 is screwed into the installation object, the rotation is continued to make the embedded rod segment 12 embedded into the installation object, and in the process, because the conical nail head 15 is a hollow structure and is provided with the cross-shaped open slot 4, after being pressed strongly, the conical nail head 15 is pressed and opened, thereby further improving the anti-theft capability of the self-tapping nail.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The above is only the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention can be used in other related technical fields, directly or indirectly, or in the same way as the present invention.
Claims (7)
1. An anti-theft self-tapping screw, comprising:
the self-tapping screw comprises a self-tapping screw body (1), wherein the self-tapping screw body (1) comprises a screw cap (11), an embedded rod section (12), an anti-theft rod section (13), a threaded rod section (14) and a conical screw head (15), the bottom of the screw cap (11) is fixedly provided with the embedded rod section (12), the other end of the embedded rod section (12) is fixedly provided with the anti-theft rod section (13), the other end of the anti-theft rod section (13) is fixedly provided with the threaded rod section (14), and the other end of the threaded rod section (14) is fixedly provided with the conical screw head (15);
the anti-theft device comprises a locking mechanism (2), wherein a plurality of locking mechanisms (2) with the same specification are respectively installed in a plurality of installation cavities (3) formed in an anti-theft rod section (13), and the installation cavities (3) are annularly arranged on the anti-theft rod section (13).
2. The anti-theft self-tapping screw according to claim 1, wherein the locking mechanism (2) comprises an embedded trapezoidal steel block (21) and a spring (22), one end of the embedded trapezoidal steel block (21) is rotatably installed in the installation cavity (3) through a pin shaft, and the inner wall of the other side of the embedded trapezoidal steel block (21) is elastically connected with the inner wall of the installation cavity (3) through the spring (22).
3. The anti-theft tapping screw according to claim 1, characterized in that 3-4 locking mechanisms (2) are provided on the anti-theft stem section (13).
4. The anti-theft self-tapping screw according to claim 1, wherein the tapered head (15) is hollow, and the head of the tapered head (15) is provided with a cross-shaped open slot (4).
5. Anti-theft tapping screw according to claim 1, characterized in that an over-cambered surface (5) is provided between the fitting shank segment (12) and the anti-theft shank segment (13).
6. The anti-theft self-tapping screw according to claim 1, characterized in that the nut (11) is provided with a cross-shaped groove (6).
7. The antitheft self-tapping screw according to claim 1, characterized in that the cap (11), the fitting shank section (12), the antitheft shank section (13), the threaded shank section (14) and the conical head (15) in the self-tapping screw body (1) are coaxially and integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020637279.5U CN212690567U (en) | 2020-04-24 | 2020-04-24 | Anti-theft self-tapping screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020637279.5U CN212690567U (en) | 2020-04-24 | 2020-04-24 | Anti-theft self-tapping screw |
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| Publication Number | Publication Date |
|---|---|
| CN212690567U true CN212690567U (en) | 2021-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020637279.5U Active CN212690567U (en) | 2020-04-24 | 2020-04-24 | Anti-theft self-tapping screw |
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| Country | Link |
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| CN (1) | CN212690567U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112958967A (en) * | 2021-03-25 | 2021-06-15 | 机械工业第九设计研究院有限公司 | Double-layer fan cover of automatic station welding smoke dust processing system of welding workshop robot |
-
2020
- 2020-04-24 CN CN202020637279.5U patent/CN212690567U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112958967A (en) * | 2021-03-25 | 2021-06-15 | 机械工业第九设计研究院有限公司 | Double-layer fan cover of automatic station welding smoke dust processing system of welding workshop robot |
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