CN201074628Y - Convex surface ornament tubular anti-theft nut of shoulder ball - Google Patents

Abstract

The utility model relates to a crossette ball convex surface decorating tube-shaped anti-theft female screw, which is characterized in that an inner female screw which has a function of tightening and a cap screw whose outer shape looks like a hollow flat head conical shape, wherein a cap of the cap screw is inserted into a conical groove of an outer female screw, an inner hole is a box screw thread which is matched with a screw bolt, and the outside is a fine left-hand shallow screw thread which is matched with the outer female screw, the outer shape of the outer female screw takes a thick-walled tube shape, an upper pipe orifice edge is an arc tuber, a central hole is the fine left-hand shallow screw thread which is matched with the inner female screw, and the locking intensity of the central hole is lower than the locking intensity of the inner female screw and the screw bolt. The combined female screw is loaded in the screw bolt and then screwed tightly, when a specified twisting moment is reached, sliding threads are destroyed by the screw thread of an short-life female screw which can only slide in the periphery of the inner female screw, furthermore, the cap of the inner female screw is designed into a ball convex surface vessel head which can be made of stainless steel or color plastic, the utility model is not only aesthetic and colorful but also can not be clamped and disassembled by normal tools, and the utility model plays a role of decoration with light and color, and a normal anti-theft female screw can not play the role.

Description

Convex shoulder ball bossage tube-like anti-theft nut

Technical field

The utility model relates to a kind of nut part, especially license plate of fastening piece and decorates anti-theft nut.

Background technique

At present, known conventional nut is convenient to loading and unloading because of it, also is convenient to the theft of crime one's share of expenses for a joint undertaking and destroys; Some have the nut of anti-theft feature, but lack decorative artistic effect.

Summary of the invention

In order to overcome above-mentioned deficiency, the utility model provides a kind of convex shoulder ball bossage tube-like anti-theft nut, just can reach purpose not only antitheft but also attractive in appearance.

The technical scheme in the invention for solving the technical problem is: the convex shoulder ball bossage tube-like anti-theft nut that is combined by inner nut and outer nut, it is characterized in that: the inner nut of fastening effect together is set, external form is as the conical cap screw of hollow tack, its cap embeds the cone-shaped groove of outer nut, endoporus is and the box thread of screw rod coupling that the outside is the left-handed shallow thread of closely-pitched that mates with outer nut.Outer nut is only to work the short-lived nut that drives the fastening effect of inner nut, and external form is the heavy wall tubulose, and the upper orifice edge is the arcuation projection, and mesopore is and the left-handed box thread of closely-pitched of inner nut coupling that its locking intensity is lower than the locking intensity of inner nut and screw rod.The outer nut of earlier inner nut being packed into during use screws into a suit assembled nut.This assembled nut is packed into and is tightened by pipe wrench behind the screw rod, and when reaching rated torque, short-lived outer nut thread damage stripped thread can only skid in the inner nut periphery, just again interior tightening nut can't be unloaded with conventional means and instrument, to reach antitheft purpose.The more important thing is that the tack top at the conical cap of tack is provided with a ball convex surface end socket, makes it increase very strong decorative effect.Useful stainless steel or colored plastic are made, and light not only attractive in appearance is gorgeous but also can't dismantle with conventional tool holder, and that plays that general anti-theft nut can't play has a coloured decorating action of light.Here be noted that spiro rod length, behind the locking object, can not surmount in the ball convex surface end socket empty.

The beneficial effects of the utility model are: simple in structure, tamper robber is functional, ornamental by force, cost is low.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1 is an inner nut panorama schematic representation, and Fig. 2 is an outer nut panorama schematic representation, and Fig. 3 is that inner nut is dissected schematic representation, and Fig. 4 is that outer nut is dissected schematic representation, and Fig. 5 is that the assembled nut that is assembled into is dissected schematic representation, and Fig. 6 is a schematic top plan view.

The flattened conical shape cap of 1. inner nuts adds ball convex-shaped end socket among the figure, 2. with the coarse thread box thread of screw rod coupling, 3. with the left-handed shallow thread of closely-pitched of outer nut coupling, 4. with inner nut cap inner conical groove movingly, 5. with the left-handed box thread of closely-pitched of inner nut coupling, the 6. upper orifice of arcuation projection.

Embodiment

In the drawings, the inner nut of fastening effect (1) together is set, external form is as hollow tack conical screw, its cap embeds the cone-shaped groove (4) of outer nut, endoporus is the box thread (2) that mates with screw rod, the outside is that the left-handed shallow thread of closely-pitched (3) outer nut with outer nut coupling is a short-lived nut that only plays the fastening effect of drive inner nut, external form is the heavy wall tubulose, the upper orifice edge is arcuation projection (6), mesopore is and the left-handed box thread of closely-pitched (5) of inner nut coupling that its locking intensity is lower than the locking intensity of inner nut and screw rod.This assembled nut is packed into and is tightened by pipe wrench behind the screw rod, and when reaching rated torque, short-lived nut thread destroys stripped thread, can only skid in the inner nut periphery, just again interior tightening nut can't be unloaded with conventional means and instrument, to reach antitheft purpose.In addition with the tack top of the conical cap of tack of inner nut, a ball convex surface end socket is set, light not only attractive in appearance is gorgeous but also can't dismantle with conventional tool holder, and that plays that general anti-theft nut can't play has a coloured decorating action of light.

Claims (3)

1. convex shoulder ball bossage tube-like anti-theft nut, combine by inner nut and outer nut, it is characterized in that: the inner nut of fastening effect (1) together is set, external form is as the conical screw of hollow tack, endoporus is the box thread (2) that mates with screw rod, the outside is the left-handed shallow thread of closely-pitched (3) that mates with outer nut, the outer nut external form is the heavy wall tubulose, the upper orifice edge is arcuation projection (6), mesopore is and the left-handed box thread of closely-pitched (5) of inner nut coupling that its locking intensity is lower than the locking intensity of inner nut and screw rod.

2. by the described convex shoulder ball bossage tube-like anti-theft nut of claim 1, it is characterized in that: the conical cap tack of the tack of its inner nut top is provided with a ball convex surface end socket.

3. by the described convex shoulder ball bossage tube-like anti-theft nut of claim 1, it is characterized in that: the conical cap (1) of the ball plush copper of inner nut, the cone-shaped groove (4) of embedding outer nut.

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