CN201381683Y

CN201381683Y - High-performance anti-theft lock with dual-layer lock core

Info

Publication number: CN201381683Y
Application number: CN200920079048U
Authority: CN
Inventors: 张良; 熊兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-02-16
Filing date: 2009-02-16
Publication date: 2010-01-13
Anticipated expiration: 2019-02-16

Abstract

The utility model provides a high-performance anti-theft lock with a dual-layer lock core, which can effectively prevent from being unlocked by a master key or other technical means. An outer lock core, an inner lock core and a pin hole are respectively arranged at the inner part of a lock body; the outer lock core and the inner lock core are two layers of movable lock core bodies, and the pin hole is penetrated through the outer lock core and the inner lock core; an inner pin, a middle pin, an outer pin, a spring and a fixed riveting sheet are arranged in the pin hole; a fixed groove is arranged at the end of the inner lock core, a strip-shaped transmission block is connected at the end of the inner lock core, a clamp ring is arranged in the fixed groove, a position-limiting groove is arranged at the end of the outer lock core, and a position-limiting pin is inserted into the position-limiting groove from the lock body. A matched key can rotate the inner lock core and drive the transmission block to open a control mechanism of a lockset after being inserted from a lock hole, whereas the outer lock core can be rotated as well when the unlocking is carried out by the master key or other technical means; as the outer lock core is limited within certain rotating range by the position-limiting pin, the control mechanism of the lockset cannot be opened, thereby improving the anti-theft capability of the lockset.

Description

Double-layer lock core high-performance theftproof lock

Affiliated technical field

The utility model relates to a kind of lockset, is a kind of double-layer lock core high-performance theftproof lock that can prevent effectively that other people from using master key or adopting technical means to unblank specifically.

Background technology

Theftproof lock in the market all is extensive use of mechanical cylinder lock, this mechanical cylinder lock is mainly by lock body, lock core constitutes, and through the pellet shot from a slingshot hole of lock body and lock core, wherein be connected with the drive block of a bar shaped at the end of lock core, in the pellet shot from a slingshot hole, be arranged with interior pellet shot from a slingshot, outer pellet shot from a slingshot and spring, the pellet shot from a slingshot hole, interior pellet shot from a slingshot, outer pellet shot from a slingshot and spring are formed the pellet shot from a slingshot arrestment mechanism jointly, a common lockset has some groups of pellet shot from a slingshot arrestment mechanisms, when blocking, interior pellet shot from a slingshot, outer pellet shot from a slingshot is subjected to spring pressure near the lock core direction, wherein interior pellet shot from a slingshot enters lock core fully, and outer pellet shot from a slingshot then some enters lock core, and another is partly in lock body, thereby make lock core stiff, when the key that matches enters lockhole in the lock core, pushed by key, interior pellet shot from a slingshot and outer pellet shot from a slingshot will compress spring to the displacement of lock body direction, thereby the contact surface of pellet shot from a slingshot and outer pellet shot from a slingshot overlaps with the active face of lock core in making, the twisting key, lock core promptly can drive drive block and rotate together, thereby opens the lockset controlling organization.Because between the pellet shot from a slingshot of this lock and the pellet shot from a slingshot hole is not tight contact, thereby when lock core when being subjected to the axial force or the force of periphery, the arrangement of every group of pellet shot from a slingshot can't be on same expansion axis, between every group, all have slight clearance, utilize special instrument to go in the lockhole every group of pellet shot from a slingshot pulled out pressure, and while rotary locking cylinder, can be at first that of pellet shot from a slingshot and pellet shot from a slingshot hole wall gap minimum being organized pellet shot from a slingshot pulls out and is pressed onto the position, perseveration, be arranged up to some groups of pellets shot from a slingshot and put in place, lock core can be in movable state, and promptly lockset is in unlocking condition, is further rotated lock core and can opens lockset.Skilled unlocking is exactly that this interstitial row by turn that adopts is removed, open various cylinder lock sets, though the pellet shot from a slingshot arrangement mode of cylinder lock is more now, but as long as unlocking tool can enter, its lock all can be unlocked theoretically, the defective that is locked in the self structure design just because of this mechanical billiard makes the theftproof performance of cylinder lock weaken greatly, brings potential safety hazard for people's lives and properties.

Summary of the invention

In order to solve the defective that the existing machinery anti-theft cylinder lock is easily opened by technical means, the utility model provides a kind of double-layer lock core high-performance theftproof lock, this theftproof lock not only has normal switch lock function, and can prevent effectively that other people from using master key or adopting technical means to unblank, and has higher theftproof performance.

The technical scheme that its technical problem that solves the utility model adopts is: be provided with outer lock core and internal cylinder in lock body successively, wherein internal cylinder is installed in outer lock core inside, and at lock body, outer lock core, internal cylinder is provided with many group pellets shot from a slingshot hole, in the pellet shot from a slingshot hole, be provided with interior pellet shot from a slingshot successively along lockhole to lock body direction, middle pellet shot from a slingshot, outer pellet shot from a slingshot, spring and fixing riveting sheet, wherein, the length of middle pellet shot from a slingshot is greater than the thickness of outer lock core core wall, end in internal cylinder is respectively equipped with holddown groove and is connected with the bar shaped drive block, holddown groove can insert for collar, this bar shaped drive block is fixed by a retainer, be provided with the limited impression of bar shaped at the end of outer lock core, the width of this limited impression is no more than the amplitude that internal cylinder is rotated when unlocking condition, and on the lock body of corresponding limited impression position, being provided with jack, spacer pin passes to this limited impression from the jack on the lock body.In the time of in off position, be subjected to the elastic force of pellet shot from a slingshot hole inner spring, interior pellet shot from a slingshot is pushed in the internal cylinder fully, middle pellet shot from a slingshot is then a part of in internal cylinder, a part of at outer lock core, after the key self-locking hole with this lock coupling inserts, pushed by key, interior pellet shot from a slingshot, middle pellet shot from a slingshot, outer pellet shot from a slingshot all moves and compresses spring to the lock body direction, wherein interior pellet shot from a slingshot overlaps with the contact surface of outer lock core with internal cylinder with the contact surface of middle pellet shot from a slingshot, and screw key can make internal cylinder together rotate, and then the bar shaped drive block of drive internal cylinder end is rotated, lockset is opened in action thereby the bar shaped drive block drives the lockset controlling organization again, realizes unblanking purpose.And if employing master key or other technologies means are unblanked, need when internally pellet shot from a slingshot pulls out pressure, apply the revolving force of certain dynamics to internal cylinder, fix will pull out the pellet shot from a slingshot that is pressed onto the position, in pulling out the pressure process, to at first be pulled out for one group of pellet shot from a slingshot and pellet shot from a slingshot interporal lacuna minimum and be pressed onto the position, apply revolving force to fix this group pellet shot from a slingshot to internal cylinder this moment, and since the pellet shot from a slingshot of all the other groups do not pull out as yet and be pressed onto the position, middle pellet shot from a slingshot wherein still has a part of in internal cylinder, then can drive outer lock core when rotating internal cylinder and move together this moment, thereby make and produce displacement between outer lock core and the lock body, this moment just can be respectively on internal cylinder and outer lock core mating face, outer lock core and lock body mating face form step, and because at lock body, outer lock core, the size in the pellet shot from a slingshot hole on the internal cylinder all is identical, when this moment the pellet shot from a slingshot in the pellet shot from a slingshot hole being pulled out pressure, middle pellet shot from a slingshot then can not be moved in lock body by step limits, and since the length of middle pellet shot from a slingshot greater than the thickness of outer lock core core wall, thereby pellet shot from a slingshot has a part of in outer lock core in this moment, another is partly still in internal cylinder, this moment is when rotating internal cylinder, the drive of pellet shot from a slingshot in being subjected to, outer lock core also can be followed rotation together equally, because the rotation amplitude of outer lock core is limited within the slewing area that can not open lockset by the spacer pin in the lock body, therefore this rotation will can't be opened lockset all the time, thereby has reached the purpose that improves the lockset theftproof performance.

Advantage of the present utility model is: can prevent that effectively other people from using master key or other technologies means to unblank under the situation that does not influence the use of lockset normal function, strengthen the theftproof performance of lockset, product structure is simple, is beneficial to promote the use of.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is a cross-sectional view of the present utility model.

Fig. 2 is the utility model China and foreign countries lock core structure schematic diagrames.

Fig. 3 is the A-A cross-sectional view of outer lock core in the utility model.

Fig. 4 is the utility model internal cylinder structural representation.

Fig. 5 is the part section structural representation of the utility model afterbody.

Fig. 6 is a vertical section structural representation of the present utility model.

Fig. 7 in the utility model be in blocking the time the pellet shot from a slingshot distribution schematic diagram.

Pellet shot from a slingshot distribution schematic diagram when Fig. 8 uses the normal unlocking condition of key for the utility model is in.

Fig. 9 is the collar of internal cylinder end in the utility model.

Figure 10 is for being used for fixing the retainer of the terminal bar shaped drive block of internal cylinder in the utility model.

Pellet shot from a slingshot distribution schematic diagram when Figure 11 unblanks under pulling out pressure condition for the utility model.

Code description among the figure: 1 lock body; 2 outer lock cores; 3 internal cylinder; 4 lockholes; 5,5 ', 5 " interior pellet shot from a slingshot; 6, pellet shot from a slingshot 6 ', 6 "; 7,7 ', 7 " outer pellet shot from a slingshot; 8 springs; 9 fixing riveting sheets; 10 spacer pins; 11 collars; 12 retainers; 13 bar shaped drive blocks; 14 limited impressions; 15 pellet shot from a slingshot holes; 16 holddown grooves; 17 locked grooves; 18,19 steps;

The specific embodiment

In Fig. 1, be respectively arranged with outer lock core (2) and internal cylinder (3) in the lock body (1), the end of outer lock core is provided with limited impression (14), the width of limited impression is less than the rotation amplitude of opening the required rotation internal cylinder of lockset, in the present embodiment, as Fig. 2, shown in Figure 3, be provided with 2 limited impressions, can increase to 4 in the practice, as shown in Figure 5, spacer pin (10) passes through to from lock body in this limited impression, to limit the rotation amplitude of outer lock core, in internal cylinder, be provided with lockhole (4), as shown in Figure 4, be provided with holddown groove (16) and the fixing locked groove of bar shaped drive block (17) at the end of internal cylinder, in shown in Figure 6, pellet shot from a slingshot hole (15) is crosswise and runs through lock body respectively, outer lock core and internal cylinder, in this enforcement, on 4 directions, be provided with 6 groups of pellet shot from a slingshot holes respectively, also can increase the group number in pellet shot from a slingshot hole in the practice, increase its complexity, with the safety of further raising lockset, in the pellet shot from a slingshot hole, be respectively equipped with interior pellet shot from a slingshot (5), middle pellet shot from a slingshot (6), outer pellet shot from a slingshot (7), spring (8) and fixing riveting sheet (9), wherein in the length of pellet shot from a slingshot greater than the thickness of outer lock core core wall.

As shown in Figure 7, lockset is in off position the time, pellet shot from a slingshot in the pellet shot from a slingshot hole is pressed on together because of the elastic force that is subjected to spring, wherein interior pellet shot from a slingshot (5) is advanced in the internal cylinder (3) fully, middle pellet shot from a slingshot (6) then some enters internal cylinder, and another is partly stayed in the outer lock core (2), and outer pellet shot from a slingshot (7) is a part of in outer lock core, partly in lock body (1), the mating face of all pellets shot from a slingshot does not all overlap with the mating face of lock core for another.And after the key with this lock core coupling enters lockhole, as shown in Figure 8, pellet shot from a slingshot in the pellet shot from a slingshot hole is because of being subjected to the key extruding all to lock body one side displacement, after treating that key all inserts, the all interior pellet shot from a slingshot (5) and the mating face of middle pellet shot from a slingshot (6) all overlap with the mating face of internal cylinder (3) and outer lock core (2) in the pellet shot from a slingshot hole, this moment, screw key can rotate internal cylinder, opened the lockset controlling organization thereby internal cylinder drives its terminal bar shaped drive block rotation, realized unblanking.

Figure 11 has exemplified pellet shot from a slingshot motion and the distribution situation thereof in the pellet shot from a slingshot hole when adopting master key or other technologies means to open the utility model lockset.Owing to need pellet shot from a slingshot to be pulled out pressure on one side when using master key or other technologies means to unblank, internal cylinder is applied revolving force on one side, fix will pull out the pellet shot from a slingshot that is pressed onto the position, as shown in figure 11, interior pellet shot from a slingshot (5) in first group of pellet shot from a slingshot hole, middle pellet shot from a slingshot (6) has pulled out and has been pressed onto the position, then need internal cylinder is applied revolving force this moment, because the pellet shot from a slingshot in other pellet shot from a slingshot holes does not pull out as yet and is pressed onto the position, middle pellet shot from a slingshot some in these pellet shot from a slingshot holes is still in internal cylinder (3), another one is in outer lock core (2), the rotation that is subjected to internal cylinder this moment drives, in pellet shot from a slingshot (6 ") and outer pellet shot from a slingshot (7 ") become to be subjected to shearing condition, middle pellet shot from a slingshot will move along direction of rotation, and the drive outer lock core rotates together, thereby respectively on the mating face of internal cylinder and outer lock core, the place, mating face of outer lock core and lock body forms a small stair (18), (19), along with pulling out the pellet shot from a slingshot group number that is pressed onto the position, it increases, the outer lock core in the residue pellet shot from a slingshot hole and the step at place, lock body mating face will be increasing, to such an extent as to stoped middle pellet shot from a slingshot in lock body, to move, and since the length of middle pellet shot from a slingshot greater than the thickness of outer lock core core wall, so the some of middle pellet shot from a slingshot still will be stayed in the internal cylinder, thereby when internal cylinder is rotated, outer lock core will inevitably be followed together and rotate under the drive of middle pellet shot from a slingshot, and owing to the rotation amplitude of outer lock core has been limited in the rotation amplitude that can not open lockset by the spacer pin in the lock body, so this rotation will can't be opened lockset all the time, reach the purpose that improves the lockset theftproof.

What exemplify in the utility model is to adopt the bar shaped drive block to open the tapered end of lockset controlling organization as drive disk assembly, this tapered end often uses in people's life, can exchange with the tapered end of its lockset, to improve its theftproof performance, and can adopt the drive disk assembly of other similar functions in the practice according to shape of lockset and uses thereof, still can effectively improve the theftproof performance of its lockset.

Claims

1, a kind of double-layer lock core high-performance theftproof lock, by lock body, lock core, pellet shot from a slingshot hole, interior pellet shot from a slingshot, outer pellet shot from a slingshot, spring, fixedly riveting sheet, collar, bar shaped drive block constitute, it is characterized in that: lock core is made of outer lock core and internal cylinder, and is provided with middle pellet shot from a slingshot at interior pellet shot from a slingshot and outer pellet shot from a slingshot centre.

2, double-layer lock core high-performance theftproof lock according to claim 1, it is characterized in that: the end at outer lock core is provided with limited impression, and the amplitude of the width of limited impression required rotation less than will open the lockset controlling organization time.

3, double-layer lock core high-performance theftproof lock according to claim 1, it is characterized in that: the length of middle pellet shot from a slingshot is greater than the thickness of outer lock core core wall.

4, double-layer lock core high-performance theftproof lock according to claim 1, it is characterized in that: the limited impression position of corresponding outer lock core is provided with jack on lock body, and spacer pin is inserted in the limited impression in this jack.