CN2806677Y - Limiting lock - Google Patents

Abstract

The utility model relates to a limiting lock matched with a rotary key line, which belongs to a novel mechanical burglarproof lock and aims to solve the problem of preventing technically unlocking the mechanical burglarproof lock. The utility model has the technical scheme that a key and a key slot adopts a thread matching structure; key teeth are coiled and evenly distributed on the rotary line of the tooth top of the outer threads of the key; marbles in a lock core, which correspond to the key teeth, hide along the interior of the tooth root of the inner threads of the key; the front end of the key is provided with a thread positioning unlocking cross-section which corresponds to a positioning pin of the lock core; a spacing pin is additionally arranged on the inner wall of a lock core sleeve, is matched with a corresponding spacing slot on the periphery wall of the lock core, and adds longitudinal spacing locking to the lock core; the rear end of the lock core is connected with an unlocking pulling pin. When the lock is to be unlocked, the key is rotated into the key slot and reaches a positioning point to finish the match with the marbles; when the key is pulled outwards, the lock core is driven to move and unlock the spacing locking; the rotation of the key can drive the lock core and the unlocking pulling pin to unlock the lock by rotation.

Description

Limiting lock of rotary key wire

Technical field

The utility model belongs to a kind of theftproof lock.

Background technology

Traditional lock, the lock core front end is the key inlet port, establishes key groove hole in the lock core, and the slotted eye side is provided with the pellet shot from a slingshot hole, lock core is positioned at the lock core cover, lock core overlaps corresponding lock core marble hole and also is provided with the pellet shot from a slingshot hole, is provided with one deck pellet shot from a slingshot in the pellet shot from a slingshot hole in the lock core, and corresponding one deck pellet shot from a slingshot is provided with two layers of pellet shot from a slingshot in the lock core sleeving marble hole, two layers of pellet shot from a slingshot rear end are provided with one or two layers of pellet shot from a slingshot of spring roof pressure, the spring outer end is enclosed on the lock body, and the lock core rear end is provided with opening pin, opens lock in order to stir dead bolt.When on the key tooth made gap between one deck pellet shot from a slingshot and the two layers of pellet shot from a slingshot just in time be positioned at the adjacent interfaces of lock core and lock core cover, lock core was broken away from the constraint of lock core cover, and key drives lock core and rotates and open lock; It is descending that otherwise spring holds one or two layers of pellet shot from a slingshot, and two layers of pellet shot from a slingshot latching can not rotate lock core between lock core and lock core cover.Its key directly plugs, and opens the origin of force peripheral hardware, and pellet shot from a slingshot is arranged in a straight line, intuitively expose, and lockset opens and shortcoming such as need only the lock core lateral rotation can realize, all gives to steal to lock and brings many convenience.The present widely used theftproof lock of people, also owing to failing thoroughly to break away from above design defect, in fact at all can not be effectively antitheft.So that existing any standard machinery lock all can be opened in a few minutes on the market.

Summary of the invention

The purpose of this utility model is a kind of limiting lock of rotary key wire of design, on the basis of basic maintenance conventional lock structure, key and key groove hole are designed to thread matching structure, and set up the limitation locking device at lock core and lock core inner room, realized effective antitheft with comparatively simple design and lower cost of manufacture.For this purpose, key of the present utility model and lock core key slotted eye adopt the thread matching structure design.Key tooth coiling is distributed on the externally threaded crest of key and revolves on the line, and the pellet shot from a slingshot corresponding with the key tooth then revolves the wire-wound body at the bottom of the tooth of key groove hole internal thread and hide in the lock core; The key front end is provided with the screw thread location corresponding with lock core dowel and opens section; Lock core cover inwall is set up spacer pin, with stopper slot cooperation corresponding on the lock core periphery wall, lock core is appended spacing (length travel) locking.The said structure design has realized the purpose of this utility model.

The utility model has the advantages that and kept the conventional lock structure substantially, key and key groove hole are designed to thread matching structure, and set up the limitation locking device at lock core and lock core inner room, realized effective antitheft with comparatively simple design and lower cost of manufacture.Lock body unlatching of the present utility model must make key rotate into key groove hole and finish the cooperation of lock core entire body pellet shot from a slingshot, next vertical outer (pushing away in also can being designed to) key that pulls out drives lock core generation axial displacement, break away from the limitation locking of lock core cover to lock core, can drive lock core rotation unlatching lock by screw key, otherwise can't unblank.Under the situation that does not change the conventional lock structure substantially, any robber person all can not be stolen open this lock.

Description of drawings

Fig. 1 is the utility model structural representation

Fig. 2 is the utility model key schematic diagram

Fig. 3 is that the utility model lock core dowel and key positioner are opened sectional schematic diagram

Fig. 4 arranges for the utility model pellet shot from a slingshot and pellet shot from a slingshot locking schematic diagram

Fig. 5 is the utility model limitation locking schematic diagram

The specific embodiment

A kind of limiting lock of rotary key wire, extremely shown in Figure 5 as Fig. 1.Form by lock housing 1, lock core cover 2, lock core 3 and key 4.The design that is structure as a whole of lock housing and lock core cover, lock core are located in the lock core cover, and key groove hole 5 is located at the lock core front end.Key and key groove hole are thread matching structure, and described key is an external thread structure, and 6 coilings of key tooth are distributed on the externally threaded crest 7 of key and revolve on the line; Described key groove hole is a female thread structure, and 8 of pellets shot from a slingshot corresponding with the key tooth 9 revolve the wire-wound body and hide at the bottom of the tooth of key groove hole internal thread in the lock core, and under the holding of pellet shot from a slingshot spring 10 the latching lock core; The key front end is provided with the screw thread location of lock core dowel 15 corresponding matching and opens section 16; The spacer pin 11 of lock core cover inwall is engaged in the lock core stopper slot 12, and the lock core rear end is connected and fixed opening pin 14 with fixed screw 13.

Described lock core stopper slot is L (or fall L) type, so that the spacer pin that lock core puts is when being in the cannelure, its transverse movement is limited, and lock core must not rotate.Must make lock core generation length travel, make spacer pin include transverse groove in, remove laterally rotation constraint.

As shown in Figure 1 and Figure 4, described limiting lock of rotary key wire had both increased the pellet shot from a slingshot number for pellet shot from a slingshot entire body rotation distributed architecture, strengthened antitheft; Lock core and lock core inner room entire body are evenly stressed when making locking again, and it is more reasonable to design; All pellets shot from a slingshot all hide in the key groove hole screw thread, have increased the difficulty that robber person stirs pellet shot from a slingshot; More because the supporting role of key groove hole internal thread crest makes such as advanced unlocking tools such as swelling gasbag, vibrations (manually) hairbrush and detection scannings lack scope for their abilities;

As shown in Figure 3, the matching design of section and alignment pin is opened in the location of key front end, makes key operated origin of force preposition.

As shown in Figure 4 and Figure 5, pellet shot from a slingshot locking and limitation locking and usefulness, opening direction power is crisscross, and more technical unlocking is difficult to the circuitous obstacle of getting over having added.

During use, key rotates into key groove hole, when unlatching section in the location of key front end arrives at lock core dowel, key tooth align corresponding with lock core marble just cooperates, the tangent plane (adjacent interfaces) that one or two layers of gap between pellet shot from a slingshot are just in time moved between lock core and the lock core cover is located, and it is fixed to have removed cylinder lock; Next pull out (pushing away in also can being made as) key outward, utilize " fix " characteristic of threaded engagement, drive lock core and vertically moves outward, spacer pin is moved into transverse groove relatively from the cannelure of L type stopper slot, limitation locking promptly is disengaged; So far, can screw key, as shown in Figure 3, the location of key front end is opened section and is promoted lock core dowel, drives the opening pin rotation of lock core together with the lock core rear end, and dead bolt is opened.

In a word, the utility model has kept the conventional lock structure substantially, and key and key groove hole are designed to thread matching structure, and has set up the limitation locking device at lock core and lock core inner room, has realized effective antitheft with comparatively simple design and lower cost of manufacture.

Claims (3)

1, a kind of limiting lock of rotary key wire is characterized in that: key (4) and lock core key slotted eye (5) adopt thread matching structure, set up spacer pin (11) and stopper slot (12) between lock body and lock core.

2, limiting lock of rotary key wire according to claim 1, it is characterized in that: key tooth (6) coiling is distributed on the externally threaded crest of key and revolves on the line (7), in the lock core (3) pellet shot from a slingshot (8) corresponding with key tooth (6) then at the bottom of the tooth of key groove hole (5) internal thread (9) revolve the wire-wound body and hide.

3, limiting lock of rotary key wire according to claim 1 is characterized in that: its stopper slot position (12) is shaped as " L " shape on lock core (3) cylindrical.

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