CN2934713Y - Screw and screw cap lock - Google Patents

Abstract

The utility model relates to a bolt and a bolt-cap lock, comprising a shell, a lock body, a lock cylinder and a screw cap. A movable rotary inner bag is arranged in the external shell by bell socket, and the rotary inner bag is fastened on the lock cylinder by a bolt; a convex set bar is arranged between the external shell and the inner bag, and a ring-shape concave is provided on the bolt cap. The lock cylinder drives the inner bag to rotate, and the set bar is stuck in the concave of the bolt cap, and as a result, the locking function is achieved. The utility model is novel in locking structure, firm, safe and reliable; the utility model can not only be used on a bolt/bolt-cap for anti-pry and antitheft, but also easy to open for disassemble; the utility model is suitable for locking and antitheft of industrial bolts/bolt-caps and especially suitable to the bolts/bolt-caps used in automobiles and motorcycles.

Description

Screw and nut lock

Technical field

The utility model relates to a kind of lock screw device, and particularly a kind of screw and nut lock are to the innovation of conventional screw and screw cap locking device, belong to the mechanical parts product.

Background technique

The quickening of process of industrialization, a large amount of various screws of use of people and screw cap with matching are nut, connect or fastening connection piece, in order to prevent the slip of nut in the using process, and prevent that the robber from turning on nut, steal key, people design multiple on screw theft preventing method, for example original method for welding is about to the nut weldering extremely in screw, though this method is firm, but bother when taking apart, a kind of hole groove that is provided with on screw body is also arranged, inject jelly on the groove of hole, jelly promptly is difficult to turn nut after solidifying.Though said method to preventing that turning the screw anti-theft key has certain effect, fails to accomplish can locking nut not to be unscrewed and can to dismantle easily the purpose of screw.

Summary of the invention

The purpose of this utility model provides a kind of screw and nut lock, adopts this screw locking device, can be easily with screw cap or screw head locking, and can both do not pinned screw anti-theft thereby reach, purpose that again can screw for convenience detach after unblanking by pirate of the open.

The technical solution of the utility model: a kind of screw and screw cap, comprise shell, lock core, lock body, lock core spring, screw cap, it is characterized in that the rotation of socket activity in the enclosure inner bag, the rotation inner bag is fixed on the lock core by sunk screw, between lock shell and lock inner bag, the arc-shaped convex locking bolt is set, annular recess is set, the corresponding cooperation of annular recess with locking bolt on screw cap.

At described rotation inner bag the annular hole groove that moves for locking bolt is set, the position of hole groove is corresponding with the locking bolt position, and locking bolt is the circular arc metal bar, also can be steel ball.

On described screw cap position annular recess is set, recess matches lock screw with locking bolt and is not turned.

Working principle of the present utility model: when locking nut position or screw head position outwardly the time, on nut location or screw head position, put the utility model lock, the tapered end of the rear casing circle of locking is difficult to be pried open, thereby reach lock, purpose of safety, and when needing knockout screw, open lock with key, promptly turn on nut with wrench easily.

The beneficial effects of the utility model: the utility model novel structure, firm, the pick-proof and anti-theft of can locking, can unblank to make things convenient for the screw dismounting again, suitable all kinds of screws and screw cap are locked antitheft, are particularly suitable for all kinds of automobiles, motorcycle and industrial screw and screw cap and lock.

Description of drawings

Fig. 1 is the utility model lock construction schematic representation (a unlocked state);

Fig. 2 is the utility model locking state schematic representation;

Fig. 3 is the utility model lock mansion view;

Fig. 4 is the utility model automobile-use nut stereogram;

Fig. 5 is the universal nut figure of the utility model;

Fig. 6 is locked in screw head schematic representation for the utility model.

Embodiment

Shown in Fig. 1～6, in Fig. 1, in lock body 3, settle lock core 2, lock body 3 cooperates by lock core spring 4 with the rotation of lock core 2 and drives, and is overlapping lock shell 1 on lock body 3.Socket activity rotation inner bag 7 in shell 1, inner bag 7 is fixed on the lock core 2 by sunk screw 5.Between shell 1 and rotation inner bag 7 arc-shaped convex locking bolt 6 is set, the hole groove that moves for locking bolt is set on inner bag 7, the position of hole groove is corresponding with the position of locking bolt.

When locking, with tapered end alignment screw cap, lock inner bag 7 is enclosed within on the nut 9, and key is inserted in the lock core 2, and rotational lock core, lock core 2 drive inner bag 7 rotations, and locking bolt 6 is screwed in the recess 8 of screw cap, and the chucking nut, sees shown in Figure 2.Become smooth cylindrical body owing to be exposed to after the outer nut of link is locked, be difficult to turn, thereby reach antitheft purpose with spanner.

In Fig. 4 and Fig. 5, on nut, all be provided with annular recess 8 for the locking bolt screens.In Fig. 6, locking bolt 6 is stuck in the screens of screw head, reaches the purpose of locking nut nail.

Claims (4)

1, a kind of screw and screw cap lock, comprise shell, lock core, lock core spring, lock body, screw cap, it is characterized in that socket activity rotation inner bag (7) in shell (1), rotation inner bag (7) is fixed on the lock core 2 by screw (5), between shell (1) and rotation inner bag (7), arc-shaped convex locking bolt (6) is set, annular recess (8) is set, recess (8) and the corresponding cooperation of protruding locking bolt (6) on screw cap.

2, a kind of screw according to claim 1 and screw cap lock is characterized in that being provided with the annular hole groove that moves for locking bolt (6) in rotation inner bag (7), groove position, hole is corresponding with locking bolt (6) position.

3, a kind of screw according to claim 1 and screw cap lock is characterized in that being provided with annular recess (8) at the screw head, recess matches with locking bolt (6).

4, a kind of screw according to claim 1 and screw cap lock is characterized in that locking bolt is circular-arc metal bar, also can be steel ball.

Images