CN203081984U

CN203081984U - Anti-theft nut

Info

Publication number: CN203081984U
Application number: CN 201220711044
Authority: CN
Inventors: 谢秉誉; 王增权; 陈锦鹏
Original assignee: WENZHOU XINDE ELECTRIC FITTINGS CO Ltd
Current assignee: WENZHOU XINDE ELECTRIC FITTINGS CO Ltd
Priority date: 2012-12-20
Filing date: 2012-12-20
Publication date: 2013-07-24
Anticipated expiration: 2022-12-20

Abstract

The utility model relates to an anti-theft nut which comprises the nut and an anti-theft ring which is sleeved on the outer side of the nut. The nut comprises a nut body, an upper boss and a lower boss, wherein the upper boss and the lower boss protrude from two ends of the nut body in the radial direction, a thread hole is formed in the nut body, the anti-theft ring is sleeved on the outer side of the nut body and is positioned between the upper boss and the lower boss, a ratchet wheel is formed on the inner edge of the anti-theft ring, the outer surface of the nut body is provided with a detent, the detent is matched with the ratchet wheel, and the ratchet wheel can make unidirectional movement relative to the detent. When the anti-theft ring is rotated in an anti-clockwise direction to screw the anti-theft nut, due to the fact that the ratchet is stopped by the detent, the nut body and the anti-theft ring rotate simultaneously. When the anti-theft ring is rotated in a clockwise direction to unscrew the anti-theft nut, due to the fact that the ratchet rotates relative to the detent, slipping phenomenon occurs, the nut body does not rotate along with the anti-theft ring, and thus the anti-theft nut does not get loose.

Description

Anti-theft nut

Technical field

The utility model relates to a kind of fastening piece, especially relates to a kind of anti-theft nut.

Background technique

In the prior art, anti-theft nut generally is axially to make two symmetrically to lay steel ball by being deep to shallow curve bath in groove on the wall of internal thread, and then with core plug and end face back-up ring stationary balls.But the destruction of this class anti-theft nut double thread is bigger, and nut strength is not enough.In addition, this class nut need be equipped with the bolt of lengthening in use usually, is equipped with packing ring again, and complex structure assembles loaded down with trivial detailsly, and cost is higher.Therefore, how to develop can the intensity height, simple in structure, anti-theft nut that cost is low, becomes the technical problem that those skilled in the art need to be resolved hurrily.

Summary of the invention

The purpose of this utility model is at the problems referred to above, and a kind of anti-theft nut is provided, and has solved the existing in prior technology technical problem.

For achieving the above object, the utility model has adopted following technical proposal: a kind of anti-theft nut, it comprises nut and is set in the theftproof ring in the nut outside, described nut comprises nut body and the convex platform and the lower convex platform that radially protrude from the two ends of nut body, offer screw in the described nut body, described theftproof ring is sheathed on the described nut body outside, and between described convex platform and lower convex platform, the interior edge of described theftproof ring forms ratchet, the outer surface of described nut body has ratchet, described ratchet matches with described ratchet, and described ratchet can be with respect to the ratchet unidirectional movement.

In above-mentioned anti-theft nut, preferably, the periphery of described theftproof ring is regular hexagon.

In above-mentioned anti-theft nut, preferably, have two ratchets on the outer surface of described nut body.

When rotating theftproof ring in the counterclockwise direction when screwing this anti-theft nut, because ratchet stopped by ratchet, so nut body and theftproof ring are rotated simultaneously.When being rotated in a clockwise direction theftproof ring when unclamping this anti-theft nut, because ratchet rotates with respect to ratchet, thereby skid, nut body can be along with theftproof ring be rotated, so can not unclamp.

Description of drawings

Fig. 1 is the structural representation of the anti-theft nut that provides of the utility model embodiment.

Fig. 2 is the structural representation of the theftproof ring among Fig. 1.

Fig. 3 is the cross-sectional structure schematic representation of the nut among Fig. 1.

Embodiment

Please refer to Fig. 1 to Fig. 3, the anti-theft nut that the utility model embodiment provides comprises nut and is set in the theftproof ring 21 in the nut outside.

Nut comprises nut body 11 and the convex platform 12 and the lower convex platform 13 that radially protrude from the two ends of nut body 11, offers screw 14 in the nut body 11.The outer surface of nut body 11 has ratchet 15.

Theftproof ring 21 centers have through hole, and this theftproof ring 21 is sheathed on the outside of nut body 11, and between convex platform 12 and lower convex platform 13.Theftproof ring 21 interior along forming ratchet 22, this ratchet 22 matches with ratchet 15 on nut body 11 outer surfaces, forms unidirectional rotational structure, and promptly ratchet 22 can be with respect to ratchet 15 unidirectional movements.In the present embodiment, theftproof ring 21 can be moved clockwise with respect to nut body 11.

When rotating theftproof ring 21 in the counterclockwise direction when screwing this anti-theft nut, because ratchet 22 stopped by ratchet 15, so nut body 11 rotates simultaneously with theftproof ring 21.When being rotated in a clockwise direction theftproof ring 21 when unclamping this anti-theft nut, because ratchet 22 rotates with respect to ratchet 15, thereby skid, nut body 11 can be along with theftproof ring 21 be rotated, so can not unclamp.Power on being applied to theftproof ring 21 is big to a certain degree the time, and ratchet 22 or ratchet 15 deform, easier skidding.

In the present embodiment, the periphery of theftproof ring 21 is regular hexagon.

In the present embodiment, have two ratchets 15 on the outer surface of nut body 11.Central angle between these two ratchets 15 is 180 degree.

Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Although this paper has used terms such as ratchet, ratchet, theftproof ring, boss morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.

Claims

1. anti-theft nut, it is characterized in that, comprise nut and be set in the theftproof ring in the nut outside, described nut comprises nut body and the convex platform and the lower convex platform that radially protrude from the two ends of nut body, offer screw in the described nut body, described theftproof ring is sheathed on the described nut body outside, and between described convex platform and lower convex platform, the interior edge of described theftproof ring forms ratchet, the outer surface of described nut body has ratchet, described ratchet matches with described ratchet, and described ratchet can be with respect to the ratchet unidirectional movement.

2. anti-theft nut according to claim 1 is characterized in that the periphery of described theftproof ring is regular hexagon.

3. anti-theft nut according to claim 1 is characterized in that, has two ratchets on the outer surface of described nut body.