CN210013917U - Disposable screw with good anti-theft performance - Google Patents
Disposable screw with good anti-theft performance Download PDFInfo
- Publication number
- CN210013917U CN210013917U CN201920081343.3U CN201920081343U CN210013917U CN 210013917 U CN210013917 U CN 210013917U CN 201920081343 U CN201920081343 U CN 201920081343U CN 210013917 U CN210013917 U CN 210013917U
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- screw
- connecting piece
- spiral shell
- screw rod
- screw head
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Abstract
The utility model discloses a disposable screw that theftproof performance is good, including screw rod, spiral shell head, tightening part, a plurality of connecting piece, the screw rod be the cylinder type, the screw rod surface coil and be equipped with the external screw thread, screw rod upper end be equipped with the spiral shell head, the spiral shell head be discoid, spiral shell head upper end be equipped with tightening part, tightening part and spiral shell head between through a plurality of connecting piece fixed connection, the connecting piece have three, connecting piece and connecting piece between around spiral shell head and tightening part center equidistance setting, the utility model discloses a set up connecting piece and tightening part with spiral shell head upper end, can continue to twist after the screw is tightened and move until the disconnection of being connected between connecting piece and the spiral shell head, the spiral shell head after the connecting piece disconnection is the smooth disc in surface, no stress point can unscrew the bolt, the theftproof performance of bolt is good, safe and reliable.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a technical field of screw, especially the technical field of the disposable screw that the theftproof performance is good.
[ background of the invention ]
Screws are commonly used in machinery, electrical appliances, buildings, etc., and are generally made of metal or plastic, and are cylindrical, and grooves with concave and convex surfaces engraved thereon are called threads. The primary function of the screw is to engage two objects or to fix the position of an object. The screws are typically removable or re-tightenable at will without loss of efficiency. The existing screw has poor anti-theft performance, is easy to disassemble, has low safety and easily causes property loss.
[ Utility model ] content
The utility model aims at solving the problem in the prior art, providing a disposable screw that theftproof performance is good, can improve the theftproof performance of screw, improve the security.
In order to realize the purpose, the utility model provides a disposable screw that theftproof performance is good, including screw rod, spiral shell head, tightening part, a plurality of connecting piece, the screw rod be the cylinder type, the screw rod surface coil and be equipped with the external screw thread, screw rod upper end be equipped with the spiral shell head, the spiral shell head be discoid, spiral shell head upper end be equipped with tightening part, tightening part and spiral shell head between through a plurality of connecting piece fixed connection.
Preferably, the number of the connecting pieces is three, and the connecting pieces are arranged with equal distance between the connecting pieces around the centers of the screw head and the tightening part.
Preferably, both ends of the connecting piece are respectively fixedly connected with the screw head and the tightening part, the contact area between the connecting piece and the screw head end is smaller than that between the screw head and the tightening part end, and the torque force required for connecting and screwing off the connecting piece and the screw head is larger than that required for screwing the screw rod.
Preferably, the lower end face of the screw head is provided with a plurality of anti-skid lines.
Preferably, the cross section of the tightening part is a regular hexagon or a regular quadrangle.
Preferably, a smooth rod part is arranged at the joint of the upper end of the screw rod and the screw head.
Preferably, the screw rod and the screw head are in an integrally formed structure.
Preferably, the screw head and the tightening part are coaxially provided.
The utility model relates to a disposable screw's that theftproof performance is good beneficial effect: the utility model discloses a set up the connecting piece with the spiral shell overhead end and screw up the portion, can continue to twist after the screw is screwed up and move until the disconnection of being connected between connecting piece and the spiral shell head, the spiral shell head after the connecting piece disconnection is the smooth disc in surface, does not have the stress point and can unscrew the bolt, and the theftproof performance of bolt is good, safe and reliable.
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 a disposable screw with good anti-theft performance;
FIG. 2 is a schematic structural view of a disposable screw with good anti-theft performance;
FIG. 3 is a cross-sectional view of portion A-A of FIG. 1;
fig. 4 is a schematic view of the structure of the disposable screw with good anti-theft performance after the screw-off part is screwed off.
In the figure: 1-screw rod, 2-screw head, 3-screwing part, 4-connecting piece, 11-external thread, 12-smooth rod part and 21-antiskid line.
[ detailed description ] embodiments
Referring to fig. 1, 2, 3 and 4, the disposable screw with good anti-theft performance of the present invention comprises a screw rod 1, a screw head 2, a screwing part 3 and a plurality of connecting pieces 4, wherein the screw rod 1 is cylindrical, an external thread 11 is coiled on the outer surface of the screw rod 1, the screw head 2 is arranged at the upper end of the screw rod 1, the screw head 2 is disc-shaped, the screwing part 3 is arranged at the upper end of the screw head 2, the screwing part 3 is fixedly connected with the screw head 2 through the plurality of connecting pieces 4, the number of the connecting pieces 4 is three, the connecting pieces 4 and the connecting pieces 4 are equidistantly arranged around the centers of the screw head 2 and the screwing part 3, the two ends of the connecting pieces 4 are respectively fixedly connected with the screw head 2 and the screwing part 3, the contact area of the connecting pieces 4 and the screw head 2 is smaller than that of the screw head 2 and the screwing part 3, the torque required for connecting and disconnecting the connecting pieces 4 and the screw head 2 is larger than that of the screw rod 1, the end surface is equipped with a plurality of anti-skidding lines 21 under the spiral shell head 2, the cross section of screwing up portion 3 be regular hexagon or regular quadrangle, 1 upper end of screw rod and the spiral shell head 2 junction be equipped with polished rod portion 12, screw rod 1 and spiral shell head 2 be integrated into one piece structure, screw rod 1, spiral shell head 2, screw up the coaxial setting of portion 3.
The utility model discloses the working process:
the utility model relates to a disposable screw that theftproof performance is good is at the working process, with screw rod 1 alignment required fixed screw, blocks through the bayonet socket spanner and screws up portion 3, and rotatory spanner is screwed up screw rod 1, can continue to screw up after screwing up and move, opens until connecting piece 4 and the linkage segment between the spiral shell head 2, and spiral shell head 2 after the connecting piece disconnection is the smooth disc in surface, does not have the stress point, and the bolt can't be unscrewed.
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 (7)
1. The utility model provides a disposable screw that theftproof performance is good which characterized in that: comprises a screw rod (1), a screw head (2), a screwing part (3) and a plurality of connecting pieces (4), the screw rod (1) is cylindrical, an external thread (11) is coiled on the outer surface of the screw rod (1), the upper end of the screw rod (1) is provided with a screw head (2), the screw head (2) is disc-shaped, the upper end of the screw head (2) is provided with a screwing part (3), the screwing part (3) is fixedly connected with the screw head (2) through a plurality of connecting pieces (4), two ends of the connecting piece (4) are respectively and fixedly connected with the screw head (2) and the tightening part (3), the contact area of the connecting piece (4) and the end of the screw head (2) is smaller than that of the screw head (2) and the end of the tightening part (3), the torsion required by the connection and the disconnection between the connecting piece (4) and the screw head (2) is larger than that required by the screwing of the screw rod (1).
2. The disposable screw with good anti-theft performance according to claim 1, characterized in that: the connecting pieces (4) are three, and the connecting pieces (4) are arranged around the center of the screw head (2) and the center of the screwing part (3) at equal intervals.
3. The disposable screw with good anti-theft performance according to claim 1, characterized in that: the lower end face of the screw head (2) is provided with a plurality of anti-skid grains (21).
4. The disposable screw with good anti-theft performance according to claim 1, characterized in that: the cross section of the tightening part (3) is a regular hexagon or a regular quadrangle.
5. The disposable screw with good anti-theft performance according to claim 1, characterized in that: the upper end of the screw rod (1) is connected with the screw head (2) and is provided with a polished rod part (12).
6. The disposable screw with good anti-theft performance according to claim 1, characterized in that: the screw rod (1) and the screw head (2) are of an integrally formed structure.
7. The disposable screw with good anti-theft performance according to claim 1, characterized in that: the screw rod (1), the screw head (2) and the tightening part (3) are coaxially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920081343.3U CN210013917U (en) | 2019-01-18 | 2019-01-18 | Disposable screw with good anti-theft performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920081343.3U CN210013917U (en) | 2019-01-18 | 2019-01-18 | Disposable screw with good anti-theft performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210013917U true CN210013917U (en) | 2020-02-04 |
Family
ID=69312383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920081343.3U Active CN210013917U (en) | 2019-01-18 | 2019-01-18 | Disposable screw with good anti-theft performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210013917U (en) |
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2019
- 2019-01-18 CN CN201920081343.3U patent/CN210013917U/en active Active
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