CN211259324U

CN211259324U - Circular anti-theft nut

Info

Publication number: CN211259324U
Application number: CN201922445588.2U
Authority: CN
Inventors: 张庆武
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-08-14
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a circular antitheft nut, including the antitheft nut body, antitheft nut body outward appearance is personally submitted cylindricly, cup joints the hexagonal lug that has the supply outer hexagonal spanner rotation usefulness of the through-hole that matches with the antitheft nut body in antitheft nut body one end and fixes, and antitheft nut body screw hole inboard is opened has the more than one arc recess the same with the screw thread direction, and arc recess one end is perpendicular deep groove, and the other end passes through with the screw thread circular arc, respectively sets up a steel ball in every arc recess, and the steel ball diameter is the same with the degree of depth of the perpendicular deep groove of arc recess. The utility model discloses a theftproof nut just can fasten the installation through ordinary outer hexagonal spanner, and is very convenient.

Description

Circular anti-theft nut

Technical Field

The utility model relates to a circular antitheft nut.

Background

Present fastener is widely applied to various structures, 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 current nut is artificial in addition easily and is dismantled, and the theftproof effect is not good.

In the round antitheft nut (patent No. 2014202452032) previously filed by the present inventor, a technical solution of providing three inclined grooves at one end of the antitheft nut and fastening by a special tool is disclosed, but since a special tool (having three protrusions) is required to perform the fastening operation, there is a limitation in practical use, and further improvement is required.

Disclosure of Invention

In order to solve the problem that the use of the anti-theft nut needs a special tool when the anti-theft nut is fastened, the utility model provides a circular anti-theft nut. The technical scheme is as follows.

The utility model provides a circular antitheft nut, includes the antitheft nut body, the antitheft nut body outward appearance is cylindricly, cup joints the hexagonal lug that supplies outer hexagonal spanner rotation usefulness that has the through-hole that matches with the antitheft nut body and fixes at antitheft nut body one end, and antitheft nut body screw hole inboard is opened has more than one arc recess the same with the screw thread direction, and arc recess one end is perpendicular deep groove, and the other end passes through with the screw thread circular arc, respectively sets up a steel ball in every arc recess, and the steel ball diameter is the same with the degree of depth of the perpendicular deep groove of arc recess.

The outer surface of the anti-theft nut body in the utility model is cylindrical, the hexagonal lug is arranged at one end, the nut body can rotate by using a common external hexagonal wrench in cooperation with the hexagonal lug, and the nut body can be fastened without a special wrench, thereby being more convenient; on the other hand, with the nut revolve to the bolt, the bolt promotes the steel ball and rolls to the perpendicular deep trouth department of arc recess, does not influence the rotation of nut and bolt this moment, but after bolt and nut are fixed, if rotatory to opposite direction, the steel ball is driven by the bolt external screw thread and rolls to the shallow end of arc recess, the steel ball plays extruded effect between nut and bolt, prevent the relative rotation of nut and bolt, and can not demolish the nut from the bolt, also difficult production is become flexible, because can not dismantle again, so also reached the purpose of theftproof.

As a further improvement of the utility model, the steel ball bearing further comprises an outer smooth inner sleeve, the inner sleeve is arranged in the threaded hole, the outer diameter of the inner sleeve is equal to the small diameter of the thread, and the steel ball is limited in the arc-shaped groove.

The inner sleeve is arranged to prevent the steel ball from falling off before the nut is fixed on the bolt, the inner sleeve is arranged from one end of the anti-theft nut body, the steel ball is limited in the arc-shaped groove, the steel ball cannot fall off from the arc-shaped groove, and when the anti-theft nut is used, the inner sleeve is jacked off by the bolt along with the screwing-in of the bolt, and the steel ball is limited in the arc-shaped groove by the bolt.

As a further improvement, the utility model also comprises an outer sleeve, the outer diameter that the one end that the theftproof nut body set up the hexagonal lug is bigger than the other end, the overcoat suit the less one end of external diameter on the theftproof nut body, and the length of overcoat is less than or equal to the length of the less one end of theftproof nut body external diameter.

Set up the overcoat, when the bolt rotation is cliied with the spanner by force, what the spanner was cliied is the overcoat, when pulling the spanner, the overcoat can rotate on the nut, and the theftproof nut body then does not move, so exert great power and can not cause the damage to the nut yet.

As a further improvement of the utility model, the arc-shaped groove have threely, even setting is inboard at theftproof nut body screw hole.

The three arc-shaped grooves are arranged, the number is optimal, the nut is well prevented from being detached, too few effective threads for fixing are not required due to too many arc-shaped grooves, and the rigidity of the nut can be ensured.

As a further improvement of the utility model, the smaller end of the outer diameter of the anti-theft nut body is provided with more than one tangent plane.

The tangent plane is arranged, so that the screw thread can be conveniently fixed during manufacturing, and the nut is prevented from rotating during manufacturing of the internal thread.

As a further improvement of the utility model, the number of the tangent planes is three.

As a further improvement of the utility model, the hexagonal chamfer of the hexagonal lug is an arc angle.

The arc angle is arranged, so that the appearance is attractive.

To sum up, the beneficial effects of the utility model are that: the problem of current theftproof nut necessary specialized tool when fastening and influence the use is solved, simple structure moreover, the simple installation, the dependable performance.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the anti-theft nut body according to the present invention.

Fig. 3 is a schematic structural view reflecting the assembly of the anti-theft nut body and the steel ball of the present invention.

Wherein: 1. a theft-proof nut body; 2. a hex tab; 3. an arc-shaped groove; 4. a steel ball; 5. an inner sleeve; 6. a jacket; 7. cutting into a section.

Detailed Description

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

The anti-theft nut shown in fig. 1 to 3 comprises an anti-theft nut body 1, an inner sleeve 5 and an outer sleeve 6, wherein the outer surface of the anti-theft nut body 1 is cylindrical, one end of the anti-theft nut body 1 is larger than the outer diameter of the other end, the end with the larger outer diameter is sleeved with a hexagonal lug 2 which is provided with a through hole matched with the anti-theft nut body 1 and used for being pulled by an outer hexagonal wrench and is welded and fixed, the hexagonal chamfer of the hexagonal lug 2 forms an arc angle, three tangent planes 7 are uniformly arranged on the outer surface of the end with the smaller outer diameter of the anti-theft nut body 1, three arc grooves 3 in the same direction as the thread are uniformly formed in the inner side of a threaded hole of the anti-theft nut body 1, one end of each arc groove 3 is a vertical deep groove, the other end of each arc groove 3 is in arc transition; the inner sleeve 5 is arranged in the threaded hole, and the outer diameter of the inner sleeve is equal to the small diameter of the thread, so that the steel ball 4 is limited in the arc-shaped groove 3; the outer sleeve 6 is sleeved at one end of the anti-theft nut body 1 with the smaller outer diameter, and the length of the outer sleeve 6 is smaller than or equal to that of the end of the anti-theft nut body 1 with the smaller outer diameter.

The utility model discloses antitheft nut's working process as follows: the outer sleeve 6 is sleeved on one end of the anti-theft nut body 1 with the smaller outer diameter, a common outer hexagonal wrench is matched with the hexagonal lug 2 at the end part of the anti-theft nut body 1, the inner sleeve 5 is pushed away by rotating the nut, when the anti-theft nut body 1 rotates, the bolt pushes the steel ball 4 to roll towards the vertical deep groove of the arc-shaped groove 3, the relative rotation of the anti-theft nut body 1 and the bolt is not influenced at the moment, after the bolt is fixed, if the outer hexagonal wrench rotates in the opposite direction, the steel ball 4 is driven by the external thread of the bolt to roll towards the shallow end of the arc-shaped groove 3, and the steel ball 4 prevents the relative rotation of the anti-theft nut body 1 and the bolt at the. If the outer sleeve 6 is clamped by a common spanner to apply force, the outer sleeve 6 rotates on the anti-theft nut body 1, and the anti-theft nut body 1 is still and cannot be detached.

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 specific 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 a circular antitheft nut, includes the antitheft nut body, its characterized in that, antitheft nut body outward appearance is cylindricly, cup joints the hexagonal lug that supplies outer hexagonal spanner rotation usefulness that has the through-hole that matches with the antitheft nut body at antitheft nut body one end and fixes, and antitheft nut body screw hole inboard is opened has more than one arc recess the same with the screw thread direction, and arc recess one end is perpendicular deep groove, and the other end passes through with the screw thread circular arc, respectively sets up a steel ball in every arc recess, and the steel ball diameter is the same with the degree of depth of the perpendicular deep groove of arc recess.

2. The antitheft nut of claim 1 further comprising an outer smooth inner sleeve disposed within the threaded bore and having an outer diameter equal to the minor diameter of the threads such that the steel ball is confined within the arcuate recess.

3. The antitheft nut according to claim 1 or 2, further comprising an outer sleeve, wherein the outer diameter of one end of the antitheft nut body provided with the hexagonal lug is larger than that of the other end of the antitheft nut body, the outer sleeve is sleeved on the end of the antitheft nut body with the smaller outer diameter, and the length of the outer sleeve is smaller than or equal to that of the end of the antitheft nut body with the smaller outer diameter.

4. The antitheft nut of claim 3 wherein said arcuate recesses are three and are uniformly disposed inside said threaded bore of said antitheft nut body.

5. The anti-theft nut as claimed in claim 4, wherein the end of the anti-theft nut body with smaller outer diameter is provided with more than one cutting surface.

6. The antitheft nut of claim 5 wherein said number of said cut surfaces is three.

7. The antitheft nut of claim 6, wherein the hexagonal chamfer of the hexagonal tab is radiused.