CN217926715U

CN217926715U - Anti-theft nut

Info

Publication number: CN217926715U
Application number: CN202221899371.4U
Authority: CN
Inventors: 张庆武
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2022-11-29
Anticipated expiration: 2032-07-22

Abstract

The utility model discloses an antitheft nut, including the antitheft nut body, the antitheft nut body is circular structure, and inside division has the theftproof groove, installs the steel ball in the theftproof inslot, still including the hexagonal lug that supplies outer hexagonal spanner rotation to use, and hexagonal lug middle part trompil cover is at antitheft nut body upper portion and fixed connection, and antitheft nut body periphery cover has the outer tube, and the inner peripheral surface and the outer peripheral face of outer tube are all smooth, are equipped with the interior sleeve pipe that is used for preventing the steel ball and drops in the screw hole of antitheft nut body. The utility model has the advantage of simple structure.

Description

Anti-theft nut

Technical Field

The utility model relates to a theftproof nut.

Background

Present fastener is widely applied to various structures on, and common fastener is bolt and hexagon nut (interior hexagon nut or outer hexagon nut), and common nut mostly uses with cooperation such as spring pad, split pin, and is not hard up easily, and locking effect is not good, and the easy artificial quilt of present nut is dismantled moreover, and the theftproof effect is not good, in view of the above, has also developed the antitheft nut in the market.

In patent document (CN 204646955U), an outer edge-shaped inner circular antitheft nut is disclosed, and specifically, a circular truncated cone is provided on the upper portion of the antitheft nut body, a fastening groove for fastening is provided on the outer peripheral surface, a prism-shaped fastening sleeve is sleeved on the outer periphery of the antitheft nut body, and a fastening block matched with the fastening groove is provided inside the prism-shaped fastening sleeve. In the technology, the round platform is arranged to prevent the prismatic fastening sleeve from being separated from the antitheft nut body, in addition, the fastening groove is formed in the peripheral surface of the round platform, the fastening block is arranged in the prismatic fastening sleeve, and the nut body is driven to rotate and fasten by rotating the prismatic fastening sleeve, so that the antitheft nut is complicated in structure and high in manufacturing cost. Therefore, improvements are urgently needed.

Disclosure of Invention

In order to solve the problems of complex structure and high manufacturing cost of the existing antitheft nut, the utility model provides an antitheft nut. The technical scheme is as follows.

Antitheft nut, including antitheft nut body, above-mentioned antitheft nut body is circular structure, and inside opening has the theftproof groove, and the steel ball is installed to the theftproof inslot, still including the hexagonal lug that supplies outer hexagonal wrench rotation usefulness, and the trompil cover is on antitheft nut body upper portion and fixed connection in the middle part of the hexagonal lug, and antitheft nut body periphery cover has the outer tube, and the inner peripheral surface and the outer peripheral face of outer tube are all smooth, are equipped with the interior sleeve pipe that is used for preventing the steel ball to drop in the screw hole of antitheft nut body. Through set up the hexagonal lug on antitheft nut body upper portion (being equivalent to change the round platform of the interior circular antitheft nut of outer prism that has been mentioned above into hexagonal lug), use outer hexagonal spanner and just can the direct rotation antitheft nut body rather than cooperating, avoided using the rotatory prismatic adapter sleeve of outer hexagonal spanner among the prior art, the adapter sleeve drives the rotatory process of this indirect rotation of antitheft nut body again, the structure of adapter sleeve and clutch blocks has been saved simultaneously, thereby make this antitheft nut structure simpler, also can reduce the cost of manufacture simultaneously. Through setting up the outer tube, when the bolt rotation is cliied with the spanner by force, what the spanner was cliied is the outer tube, when pulling the spanner, the outer tube can rotate on the nut, and the theftproof nut body is then motionless, so exert bigger power and can not cause the damage to the nut yet.

In order to prevent the outer sleeve from being separated from the anti-theft nut body, the maximum diameter of the hexagonal lug is larger than the outer diameter of the outer sleeve.

In order to protect the anti-theft nut body more completely, the sum of the thickness of the hexagonal lug and the length of the outer sleeve is equal to the length of the anti-theft nut body.

In order to keep the steel balls stable and not roll, the outer peripheral surface of the inner sleeve is smooth, the outer diameter of the inner sleeve is equal to the small diameter of the thread of the anti-theft nut body, and the steel balls are limited in the anti-theft grooves.

In order to make the appearance more beautiful, the upper end surface (the surface far away from the outer sleeve) of the hexagonal lug is flush with the upper end surface of the anti-theft nut body, and the hexagonal chamfer of the hexagonal lug forms an arc angle.

Has the beneficial effects that: the hexagonal lug is arranged at the upper end of the antitheft nut body, and the outer hexagonal wrench can be directly fastened through the hexagonal lug, so that the antitheft nut is prevented from being indirectly fastened through the prismatic fastening sleeve in the past, the fastening groove and the fastening block are omitted, the integral structure is simpler, and the manufacturing cost is saved; the maximum diameter of the hexagonal lug is larger than the outer diameter of the outer sleeve, so that the outer sleeve is prevented from being separated from the anti-theft nut body; the sum of the thickness of the hexagonal lug and the length of the outer sleeve is equal to the length of the anti-theft nut body, so that the anti-theft nut body is protected more comprehensively; the outer peripheral surface of the inner sleeve is smooth, the outer diameter of the inner sleeve is equal to the small diameter of the thread of the anti-theft nut body, so that the steel balls are limited in the anti-theft grooves and do not roll; the upper end face of the hexagonal lug is flush with the upper end face of the anti-theft nut body, and the hexagonal chamfer of the hexagonal lug forms an arc angle, so that the appearance is more attractive.

Drawings

Fig. 1 is a schematic structural view of the anti-theft nut of the present invention;

FIG. 2 is a schematic structural view of the anti-theft nut of the present invention with the inner sleeve removed;

wherein: 1. a theft-proof nut body; 2. a hex tab; 3. an outer sleeve; 4. an inner sleeve; 5. an anti-theft slot; 6. and (5) steel balls.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings.

As shown in fig. 1-2, an anti-theft nut comprises an anti-theft nut body 1, wherein the anti-theft nut body 1 is of a circular structure, an anti-theft groove 5 is formed in the anti-theft nut body 1, and a steel ball 6 is arranged in the anti-theft groove 5; still including supplying the hexagonal lug 2 of outer hexagonal spanner rotation usefulness, the trompil cover in the middle part of hexagonal lug 2 is on 1 upper portion of antitheft nut body and welding, and the up end of hexagonal lug 2 flushes with the up end of antitheft nut body 1, and the hexagonal chamfer of hexagonal lug 2 becomes the arc angle. The outer sleeve 3 is sleeved on the outer periphery of the anti-theft nut body 1, the inner peripheral surface and the outer peripheral surface of the outer sleeve 3 are smooth, the maximum diameter of the hexagonal lug 2 is larger than the outer diameter of the outer sleeve 3, and the sum of the thickness of the hexagonal lug 2 and the length of the outer sleeve 3 is equal to the length of the anti-theft nut body 1. An inner sleeve 4 used for preventing the steel balls 6 from falling off is arranged in a threaded hole of the anti-theft nut body 1, the peripheral surface of the inner sleeve 4 is smooth, the outer diameter of the inner sleeve 4 is equal to the small diameter of the thread of the anti-theft nut body 1, and the steel balls 6 are limited in the anti-theft grooves 5.

What has not been described in detail in the present invention is the prior art, or can be realized by the prior art, and it should be understood that the embodiments of the present invention are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. All equivalent changes and modifications made according to the content of the claims of the present invention should be regarded as the technical scope of the present invention.

Claims

1. The utility model provides an anti-theft nut, includes the anti-theft nut body, its characterized in that, the anti-theft nut body is circular structure, and inside opens there is the theftproof groove, and the steel ball is installed to the theftproof inslot, still includes the hexagonal lug that supplies outer hexagonal wrench rotation usefulness, and the trompil cover in the middle part of the hexagonal lug is on anti-theft nut body upper portion and fixed connection, and anti-theft nut body periphery cover has the outer tube, and the inner peripheral surface and the outer peripheral face of outer tube are all smooth, are equipped with the interior sleeve pipe that is used for preventing the steel ball to drop in the screw hole of anti-theft nut body.

2. The antitheft nut of claim 1 wherein the maximum diameter of the hex tab is greater than the outer diameter of the outer sleeve.

3. The antitheft nut of claim 2, wherein the sum of the thickness of the hex tab and the length of the outer sleeve is equal to the length of the antitheft nut body.

4. The antitheft nut of claim 3, wherein the outer peripheral surface of said inner sleeve is smooth, and the outer diameter of the inner sleeve is equal to the small diameter of the thread of the antitheft nut body, so that the steel balls are confined in the antitheft groove.

5. The antitheft nut of claim 4, wherein the upper end face of the hex tab is flush with the upper end face of the antitheft nut body, and the hex chamfer of the hex tab is radiused.