CN201031535Y

CN201031535Y - Symmetrical type anti-theft lock

Info

Publication number: CN201031535Y
Application number: CNU2007200899291U
Authority: CN
Inventors: 徐改明
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-31
Filing date: 2007-03-31
Publication date: 2008-03-05
Anticipated expiration: 2017-03-31

Abstract

The utility model discloses a symmetrical anti-theft lock core in the technical field of the lockset. The lock core comprises a lock core jacket and an internal core. The internal core is sleeved and arranged in the lock core jacket through an enclosing cover; wherein an internal core control sleeve is arranged between the lock core jacket and the internal core and a shift lever which is cooperated and provided with a lock body is arranged at the extended end of the internal core control sleeve. The key retaining holes are symmetrically arranged on the circumferential wall of the internal core control sleeve in the axial direction and the control sleeve retaining keys are arranged in the key retaining holes. A compaction mechanism of a retaining key is clamped and arranged at the external side of the control sleeve retaining key and a plurality of marble grooves are arranged at the center of the internal core. The internal core key retaining grooves are symmetrically arranged on the circumferential wall of the internal wall and the internal core retaining keys are arranged in the internal core key retaining grooves. A marble component is arranged in each marble groove. Compared with the prior art, the lock core has novel structure and good anti-theft performance, and the marbles of the lock core are symmetrically arranged in two ways, thus increasing the difficulty of counterfeiting the key and the difficulty of levering the lock. The unique 'free rotation' lock core structure results in that the theft by drilling the lock is uneasy to be succeeded.

Description

The symmetrical expression anti-theft lock

Technical field:

The utility model belongs to lock technology field, is specially adapted to the matching used a kind of symmetrical expression anti-theft lock of family's door lock or other and lock body.

Background technology:

The lock core of conventional lock comprises inner core and shell, and inner core cover is cased, and inner core is connected with plectrum, be provided with pellet shot from a slingshot and spring in the shell, when key was transferred to, the pellet shot from a slingshot post is positioned at inner core under the effect of spring and shell cooperates the place, slit, and the inner core opposite shell can not be rotated.But when adopting the drilling method to destroy inner core as the thief:, then inner core is easy to destroyed and loses function, and also there is something special is to utilize the mandatory rotation inner core of special tool, the pellet shot from a slingshot post can be sheared to break, thereby lockset was lost efficacy.So conventional lock cylinders can not prevent drilling and shakedown, and has lost safety, so the theftproof performance of conventional lock is not high.

The utility model content:

For solving the existing above-mentioned defective that exists, the purpose of this utility model provides a kind of symmetrical expression anti-theft lock, and after key was extracted, inner core can revolve three-sixth turn arbitrarily, and inner core is in idling conditions, can prevent effectively that drilling from destroying, and improves the theftproof performance of lockset.

For achieving the above object, the technical scheme that the utility model is taked is: a kind of symmetrical expression anti-theft lock, this lock core comprises lock core sleeve and inner core, inner core is set in the lock core sleeve by capping, wherein: between lock core sleeve and inner core, be provided with the inner core control cover that can rotate mutually, the external part of inner core control cover is provided with the driving lever equipped with lock body, symmetry offers the block key hole on the described inner core control cover circumferential wall vertically, in the block key hole, be provided with and radially movable control overlap block key, be installed with the hold-down mechanism of block key in the outside of control cover block key, be positioned at and be arranged with and control the overcoat retaining groove that matches of cover block key on the lock core sleeve inwall, the center of described inner core is provided with a plurality of bullet groove, symmetry offers corresponding with the block key hole and runs through the inner core blocking key groove of bullet groove on the inner core circumferential wall, be provided with the radially inner core block key of activity in the inner core blocking key groove, the pellet shot from a slingshot assembly is housed in each bullet groove.

Described bullet groove is that 6～12 two rows are symmetrical arranged, described pellet shot from a slingshot assembly is made of Z-shaped pellet shot from a slingshot and spring, have spring base and key crest contact at the middle part of Z-shaped pellet shot from a slingshot, spring is provided with the pellet shot from a slingshot post groove that can match with the inner core blocking key groove on Z-shaped pellet shot from a slingshot between spring base and spring marble groove.

Described hold-down mechanism has bar-spring, the inner core control that is positioned at two ends, block key hole puts and is provided with the spring eye that is used to place bar-spring, the outside of control cover block key has the axial hole that is used to place bar-spring, and axial hole is passed at the middle part of bar-spring, and two ends are installed in the spring eye.

Described hold-down mechanism has and is positioned on the lock core sleeve through two fore-set holes of overcoat retaining groove, is provided with spring and fore-set in the fore-set hole.

Adopt the beneficial effect of technique scheme: this practical inner core control cover that can rotate mutually that between lock core sleeve and inner core, is provided with, be provided with control cover block key in the inner core control cover, interior in-core is provided with the inner core block key, key can pass through pellet shot from a slingshot assembly, the residing position of inner core block key control control cover block key, realizes unblanking and anti-theft feature.When key is extracted the lockset locking, the pellet shot from a slingshot assembly is with inner core block key jack-up, control cover block key is positioned at inner core control cover, inner core can rotate with respect to inner core control cover, when the lawless person adopted drilling tool to destroy lock core, inner core can rotate simultaneously with drill bit, makes drilling tool lack scope for their abilities, thereby effectively prevent the destruction of drilling tool, really play antitheft effect lock core.Above-mentioned inner core is offered pellet shot from a slingshot post hole slot totally 12 pellet shot from a slingshot post sheets, and arrangement scheme is many, and the overlapping rate is extremely low, can not have repetitive cycling near 600,000,000 locks, and mutual opening rate is almost equal to zero.This lock core can with the supporting use of multiple lock body, as safe-guard door lock, common door lock, U-shape lock, lock for motorcycle, all kinds of bright locks such as automobile steering lock, built-in lock.

Description of drawings:

Fig. 1 is this practical structural representation of vertically analysing and observe.

Fig. 2 is Figure 1A-A cross-sectional view.

Fig. 3 is an A-A cross-sectional view under Fig. 1 unlocking condition.

Fig. 4 is the sectional view of the another kind of embodiment of hold-down mechanism.

Fig. 5 is a pellet shot from a slingshot structure for amplifying schematic diagram.

Fig. 6 is a control cover block key sectional view.

The specific embodiment

As Fig. 1,2, symmetrical expression anti-theft lock shown in 3, has lock core sleeve 2, inner core control cover 6 and inner core 7, inner core is cylindric being sleeved in the inner core control cover 6, inner core 7 can rotate with respect to inner core control cover 6, inner core control cover 6 is sleeved in the lock core sleeve 2, inner core control cover can rotate with respect to lock core sleeve, be provided with the capping 1 that is used for shutoff inner core and inner core control cover in the end of lock core sleeve, capping is provided with keyhole, be provided with overcoat blocking key groove 4 in the lock core sleeve, inner core control cover 6 has the external part that stretches out lock core sleeve, and external part is provided with the driving lever groove, and the driving lever 8 equipped with lock body is installed in the driving lever groove by Joining clasp.Symmetry offers block key hole 10 on inner core control cover circumferential wall vertically, is provided with radially movable rectangle control to overlap block key 3 in the block key hole, and the outside of control cover block key is installed with the hold-down mechanism of block key.Hold-down mechanism shown in Fig. 1,6, has bar-spring 13, the inner core control that is positioned at two ends, block key hole puts and is provided with the spring eye 14 that is used to place bar-spring, the outside of control cover block key has the axial hole 16 that is used to place bar-spring, inner core control cover 6 positions that are positioned at axial hole 16 two ends are provided with oblique slot 26, axial hole 16 is passed at the middle part of bar-spring 13, and two ends are installed in the spring eye 14.The another kind of embodiment of hold-down mechanism as shown in Figure 4, hold-down mechanism has on the circumferential wall that is positioned at lock core sleeve 2 and radially to be provided with and through two fore-set holes 22 of overcoat retaining groove 4, be provided with spring 21 and fore-set 20 in the fore-set hole 22, the outer end in fore-set hole 22 is by the shutoff of shutoff sheet.Shown in Fig. 2,3, the center of inner core 7 is provided with 6～12 two symmetrically arranged bullet groove 11 of row and keyhole 15, keyhole 15 is connected with bullet groove 11, pellet shot from a slingshot assembly 12 is housed in each bullet groove, pellet shot from a slingshot assembly 12 is made of Z-shaped pellet shot from a slingshot 17 and spring 18, two row's pellets shot from a slingshot are installed relatively, and spring 18 is fixed on interior in-core and is fixed by the shutoff of shutoff sheet process shutoff groove.Z-shaped pellet shot from a slingshot as shown in Figure 5 is provided with pellet shot from a slingshot groove 23 at the end face of Z-shaped pellet shot from a slingshot 17, and the cross sectional shape of pellet shot from a slingshot groove 23 is a triangle, has spring base 24 and key crest contact 25 on Z-shaped pellet shot from a slingshot 17, and spring 18 is between spring base 24 and bullet groove 11.Symmetry offers corresponding with block key hole 10 and runs through the inner core blocking key groove 9 of bullet groove 11 on the circumferential wall of inner core 7, being provided with in the inner core blocking key groove 9 can be along the radially movable rectangle inner core block key 5 of inner core blocking key groove, inner core block key 5 bottom cross sectional shapes are triangle, and the triangle shaped ends of inner core block key matches with pellet shot from a slingshot groove 23.Length, the width in overcoat blocking key groove 4, inner core blocking key groove 9 and block key hole 9 are consistent.

Operating principle:

Be the blocking inner core idle running state diagram of key when not inserting as shown in Figure 2, at this moment, marble spring is in free state, the inner core block key is by the end face jack-up of pellet shot from a slingshot, the end portion of block key is not in the pellet shot from a slingshot groove, the upper surface of inner core block key is consistent with the external cylindrical surface of inner core, inner core can revolve three-sixth turn with respect to inner core control cover any direction, control cover block key is between inner core control cover and lock core sleeve, mutual rotation between control cover block key control lock core sleeve and the inner core operating key, make to be positioned at the driving lever that inner core control puts and can not to rotate, lockset can not be opened.

When being the key insertion as shown in Figure 3 is the blocking figure that unblanks, when key inserts the keyhole of inner core, the key crest contact of the key tooth conflict pellet shot from a slingshot of key both sides, make pellet shot from a slingshot and spring side shifting outside two, the end of inner core shelves key falls in the pellet shot from a slingshot groove in the effect of bar-spring and control cover block key, at this moment control cover block key is between inner core blocking key groove and control cover block key hole, inner core rotates and drives the rotation of inner core control cover when key, rotate thereby drive the driving lever that is connected with inner core control cover, play a part to unblank.

Claims

1. symmetrical expression anti-theft lock, this lock core comprises lock core sleeve (2) and inner core (7), inner core is set in the lock core sleeve by capping (1), it is characterized in that: between lock core sleeve (2) and inner core (7), be provided with the inner core control cover (6) that can rotate mutually, the external part of inner core control cover is provided with the driving lever (8) equipped with lock body, symmetry offers block key hole (10) on the described inner core control cover circumferential wall vertically, in the block key hole, be provided with and radially movable control overlap block key (3), be installed with the hold-down mechanism of block key in the outside of control cover block key, be positioned at and be arranged with and control the overcoat retaining groove (4) that matches of cover block key on the lock core sleeve inwall, the center of described inner core is provided with a plurality of bullet groove (11), symmetry offers corresponding with the block key hole and runs through the inner core blocking key groove (9) of bullet groove on the inner core circumferential wall, be provided with the radially inner core block key (5) of activity in the inner core blocking key groove, pellet shot from a slingshot assembly (12) is housed in each bullet groove.

2. symmetrical expression anti-theft lock according to claim 1, it is characterized in that: described bullet groove is that 6～12 two rows are symmetrical arranged, described pellet shot from a slingshot assembly is made of Z-shaped pellet shot from a slingshot (17) and spring (18), have spring base (24) and key crest contact (25) at the middle part of Z-shaped pellet shot from a slingshot, spring (18) is provided with the pellet shot from a slingshot post groove (23) that can match with the inner core blocking key groove on Z-shaped pellet shot from a slingshot between spring base and spring marble groove.

3. according to claim 1 or 2 described symmetrical expression anti-theft locks, it is characterized in that: described hold-down mechanism has bar-spring (13), the inner core control that is positioned at two ends, block key hole puts and is provided with the spring eye (14) that is used to place bar-spring, the outside of control cover block key has the axial hole (16) that is used to place bar-spring, axial hole is passed at the middle part of bar-spring, and two ends are installed in the spring eye (14).

4. symmetrical expression anti-theft lock according to claim 1 and 2 is characterized in that: described hold-down mechanism has and is positioned on the lock core sleeve through two fore-set holes (22) of overcoat retaining groove (4), is provided with spring (21) and fore-set (20) in the fore-set hole.