CN215567133U - Anti-theft bolt and special spanner - Google Patents
Anti-theft bolt and special spanner Download PDFInfo
- Publication number
- CN215567133U CN215567133U CN202120686254.9U CN202120686254U CN215567133U CN 215567133 U CN215567133 U CN 215567133U CN 202120686254 U CN202120686254 U CN 202120686254U CN 215567133 U CN215567133 U CN 215567133U
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- inclined plane
- clamping jaw
- theft
- round hole
- bolt
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Abstract
The utility model discloses an anti-theft bolt and a special spanner, which comprise a screw rod and a bolt head, wherein the upper end of the bolt head is provided with a round hole, one half of the round hole is internally provided with a first inclined plane, the other half of the round hole is provided with a second inclined plane, the first inclined plane and the second inclined plane have opposite inclined directions, and the inclined angles alpha are the same; a first locking groove is formed between the lower end of the first inclined plane and the high end of the second inclined plane; and a second locking groove is formed between the lower end of the second inclined plane and the high end of the first inclined plane. The anti-theft wrench has the advantages of novel and reasonable structure, good anti-theft effect, labor saving of the special wrench, no slipping of the clamping jaw, no damage to the clamping jaw and long service life.
Description
Technical Field
The utility model relates to the technical field of mechanical fasteners, in particular to an anti-theft bolt and a special wrench.
Background
The bolt is a common mechanical fastening connecting piece and consists of a bolt head and a screw rod. Conventional bolts have straight, cross or hexagonal bolts, and because the edges and corners are clear, the bolts do not have special requirements on tools and are easy to disassemble, so that some equipment is stolen, and the anti-theft effect is poor. At present, a plurality of anti-theft bolts are available in the market, but most of the anti-theft bolts have the problems of complex structure, inconvenient operation, multiple processing procedures, high manufacturing cost and the like.
Disclosure of Invention
The utility model aims to solve the technical problems and provides an anti-theft bolt and a special wrench.
In order to achieve the technical purpose and achieve the technical requirements, the utility model adopts the technical scheme that:
theftproof bolt, including screw rod, bolt head, its characterized in that: a round hole is formed in the upper end of the bolt head, a first inclined plane is arranged in one half of the round hole, a second inclined plane is arranged in the other half of the round hole, the first inclined plane and the second inclined plane are opposite in inclination, and the oblique angles alpha are the same; a first locking groove is formed between the lower end of the first inclined plane and the high end of the second inclined plane; and a second locking groove is formed between the lower end of the second inclined plane and the high end of the first inclined plane.
Preferably: the high-end side face of the second inclined face is a first locking face, and the high-end side face of the first inclined face is a second locking face.
Preferably: the first locking surface and the second locking surface have the same area.
Preferably: the oblique angle alpha is set to be 35-65 degrees.
The special spanner of theftproof bolt, including the spanner handle, its characterized in that: the bottom of the wrench handle is vertically provided with a first jaw and a second jaw; the first clamping jaw and the second clamping jaw are oppositely arranged, the outer rings of the first clamping jaw and the second clamping jaw are provided with circular arcs in clearance fit with the circular holes, and chamfers are arranged on the circular arcs; inclined planes are arranged at the bottoms of the first clamping jaw and the second clamping jaw; the bottom inclined plane of the first claw is matched with the first inclined plane; the bottom inclined plane of the second claw is matched with the second inclined plane.
Compared with the traditional structure, the utility model has the beneficial effects that:
1. two opposite locking grooves in the bolt head round hole are formed by a first inclined plane and a second inclined plane, a clamping jaw on the wrench can only rotate towards one direction to lock a workpiece, no action surface exists during reverse rotation, and the clamping jaw can only withdraw along the first inclined plane and the second inclined plane, so that the anti-theft effect is achieved.
2. The special spanner is convenient to use, the clamping jaws are perpendicular to the spanner handle, and the spanner handle is long and labor-saving.
3. The locking groove body area and the locking area of the head of the anti-theft bolt are large, the clamping jaw is not easy to slip, the special spanner is not easy to damage, and the service life is long.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 5 is a front view of the special wrench of the present invention;
FIG. 6 is a top view of the special wrench of the present invention;
in the figure: 1. the bolt comprises a screw, 2, a bolt head, 3, a first inclined surface, 4, a second inclined surface, 5, a round hole, 6, a first locking groove, 7, a second locking groove, 8, a spanner handle, 9, a first clamping jaw, 10, a second clamping jaw and 11, and chamfers.
Detailed Description
The present invention is further described below.
Referring to the attached drawings, the anti-theft bolt comprises a screw rod 1 and a bolt head 2, and is characterized in that: a round hole 5 is formed in the upper end of the bolt head 2, a first inclined surface 3 is arranged in one half of the round hole 5, a second inclined surface 4 is arranged in the other half of the round hole 5, the first inclined surface 3 and the second inclined surface 4 are opposite in inclination, and the inclination angles alpha are the same; a first locking groove 6 is formed between the lower end of the first inclined surface 3 and the high end of the second inclined surface 4; a second locking groove 7 is formed between the lower end of the second inclined surface 4 and the upper end of the first inclined surface 3.
In this preferred embodiment, the high-end side surface of the second inclined surface 4 is a first locking surface, and the high-end side surface of the first inclined surface 3 is a second locking surface.
In the preferred embodiment, the first locking surface and the second locking surface have the same area.
In the preferred embodiment, the oblique angle alpha is set to be 35-65 degrees.
The special spanner of theftproof bolt, including the spanner handle, its characterized in that: the bottom of the wrench handle 8 is vertically provided with a first jaw 9 and a second jaw 10; the first clamping jaw 9 and the second clamping jaw 10 are arranged oppositely, the outer rings of the first clamping jaw 9 and the second clamping jaw 10 are provided with circular arcs in clearance fit with the circular hole 5, and chamfers are arranged on the circular arcs; inclined planes are arranged at the bottoms of the first clamping jaw 9 and the second clamping jaw 10; the bottom inclined plane of the first claw 9 is matched with the first inclined plane 3; the bottom inclined surface of the second claw 10 is matched with the second inclined surface 4.
When the bolt is specifically implemented, the first inclined plane and the second inclined plane in the bolt head are formed in one step through hot extrusion, and the bolt is convenient to process.
The above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, but not intended to limit the scope of the present invention, and all equivalent technical solutions also belong to the scope of the present invention, and the scope of the present invention should be defined by the claims.
Claims (5)
1. Theftproof bolt, including screw rod (1), bolt head (2), its characterized in that: a round hole (5) is formed in the upper end of the bolt head (2), a first inclined plane (3) is arranged in one half of the round hole (5), a second inclined plane (4) is arranged in the other half of the round hole (5), the first inclined plane (3) and the second inclined plane (4) are opposite in inclination, and the oblique angles alpha are the same; a first locking groove (6) is formed between the lower end of the first inclined surface (3) and the high end of the second inclined surface (4); and a second locking groove (7) is formed between the lower end of the second inclined surface (4) and the upper end of the first inclined surface (3).
2. The anti-theft bolt according to claim 1, wherein: the high-end side of the second inclined plane (4) is a first locking surface, and the high-end side of the first inclined plane (3) is a second locking surface.
3. The anti-theft bolt according to claim 2, wherein: the first locking surface and the second locking surface have the same area.
4. The anti-theft bolt according to claim 1, wherein: the oblique angle alpha is set to be 35-65 degrees.
5. Special spanner for anti-theft bolts according to claim 1, comprising a spanner handle (8), characterized in that: a first jaw (9) and a second jaw (10) are vertically arranged at the bottom of the wrench handle (8); the first clamping jaw (9) and the second clamping jaw (10) are arranged oppositely, the outer rings of the first clamping jaw (9) and the second clamping jaw (10) are provided with circular arcs in clearance fit with the circular hole (5), and chamfers are arranged on the circular arcs; inclined planes are arranged at the bottoms of the first clamping jaw (9) and the second clamping jaw (10); the bottom inclined plane of the first claw (9) is matched with the first inclined plane (3); the bottom inclined plane of the second claw (10) is matched with the second inclined plane (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120686254.9U CN215567133U (en) | 2021-04-06 | 2021-04-06 | Anti-theft bolt and special spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120686254.9U CN215567133U (en) | 2021-04-06 | 2021-04-06 | Anti-theft bolt and special spanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215567133U true CN215567133U (en) | 2022-01-18 |
Family
ID=79855497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120686254.9U Active CN215567133U (en) | 2021-04-06 | 2021-04-06 | Anti-theft bolt and special spanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215567133U (en) |
-
2021
- 2021-04-06 CN CN202120686254.9U patent/CN215567133U/en active Active
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