CN2153607Y

CN2153607Y - Anti-prying device of door lock

Info

Publication number: CN2153607Y
Application number: CN 92236814
Authority: CN
Inventors: 宗恩泽
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-27
Filing date: 1992-09-27
Publication date: 1994-01-19
Anticipated expiration: 2002-09-27

Abstract

The utility model relates to an anti-prizing device on a built-in door lock, which belongs to the technical field of lock manufacture. The purpose of the utility model is to improve the anti-prizing performance of a built-in door lock. On the basis of the structure of the existing built-in door lock, the utility model is additionally provided with a set of parts which are linked a mechanical system which uses a key to lock a door and open a door. A transverse passage is arranged on a square lock bolt, a metal rod or a sliding nail is arranged in the transverse passage, and the metal rod or the sliding nail is pushed by a spring and a crank driven by a key or a metal strip. The metal rod or the sliding nail is drawn out of the lock bolt to enable the square lock bolt to be clamped in a lock bolt hole of a lock box. The metal square sliding nail which can be drawn out only by the key can not be prized by a prizing tool.

Description

Anti-prying device of door lock

The utility model relates to the field of door lock manufacturing technology.

Concealed installation list tongue on the domestic market and two flapper are locked at present, can be divided into two big classes internally on the structure, main difference is on the control parts that Square lock bolt stretches, a kind of is to release and retract Square lock bolt by a rotatable connecting rod moving in the skewed slot of Square lock bolt rear portion, the shortcoming of this structure is, the dead bolt that stretches out can push back lock housing to it from the outside, and the function of anti-group pick-proof is very poor, and this in recent years door lock has by the gesture of another kind of door lock replacement.The Square lock bolt of another kind of door lock is to have the wheel of several teeth in rotation dead bolt to be transferred to or withdrawal by one, and the Square lock bolt under this structure just can not push back lock housing to it from the outside once transfering to.But, all concealed installation door locks, the length of stretching out because of Square lock bolt is all short to be generally the 10-12 millimeter, and the performance of pick-proof is all undesirable.

The purpose of this utility model is exactly that simple anti-picking device is placed in existing concealed installation door lock (hereinafter to be referred as door lock) lining, makes it to become the door lock that general pry is prized not opened, for society provides a kind of safer door lock.

The embodiment of this device can be done in such a manner.

This device is for the door lock of different structure, though it is slightly different on thin portion structure, but its basic principle is consistent, promptly be one or two to be installed to stretch out or the metal bar or the nail of retraction on Square lock bolt, after Square lock bolt enters the doorframe dead bolt hole, metal bar or nail are ejected the side of Square lock bolt, can play the effect that stops Square lock bolt to withdraw from dead bolt hole.The withdrawal of metal bar or nail always connects together with the action of unblanking, and with key unlocking, before Square lock bolt withdrawed from lock housing, metal bar had been withdrawn in the dead bolt, so Square lock bolt can withdraw from dead bolt hole.

By the flexible door lock of connecting rod controlling party dead bolt (being called for short the link-type door lock) anti-picking device, be above oblique elongated slot bottom, Square lock bolt rear, to make a call to an aperture, also there is an aperture at the middle part that one one end is the crank of √ font, with the pin is that axle connects together both, the crank other end is inserted in the sliding nail of Square lock bolt, like this, slide when reaching oblique elongated slot bottom in the connecting rod top, promptly stir an end of crank √ shape end, crank is a fulcrum with the axle at its middle part, one end of metal bar is sent the sidepiece plane of Square lock bolt, work to stop that Square lock bolt withdraws from dead bolt hole.When the connecting rod top is mobile round about, at first contact another part of √ shape end √ shape, the top of crank is moved in the opposite direction, metal bar is retracted into Square lock bolt, and connecting rod continues to move, and Square lock bolt can withdraw from dead bolt hole.Connecting rod moves and moving direction is by the slewing maneuver of key.

By the flexible door lock of gear teeth controlling party dead bolt (being called for short the gear tooth-type door lock), the anti-picking device that it is additional, the horizontal front end that is still at Square lock bolt bores a passage, its mid-two pegs that are with spring, one end of nail is half garden staple cap and the middle part that is positioned at Square lock bolt, it is equal with the Square lock bolt side plane that the other end overlaps a metal ring, and spring is between the metal head of a nail and metal ring.Have at Square lock bolt middle part one with the perpendicular hole of peg passage, a laths of metal is arranged in the hole, the end of lath is about an angle of 90 degrees, when it is pushed ahead, can be separately extrapolated two pegs, make the other end be exposed to Square lock bolt two side planes, withdraw from dead bolt hole to stop Square lock bolt.When this lath retreated, peg was also with returning Square lock bolt.Have a chute to link to each other with former Square lock bolt gripper shoe at the middle part of laths of metal, the other end of plate contacts with the gear teeth.When the gear teeth were being dialled the Square lock bolt gripper shoe and moved forward, lath also moved thereupon, treats that Square lock bolt enters after the dead bolt hole, and key continues to rotate a circle, and lath is with independent readvance about 5 millimeters, so two pegs in the Square lock bolt just have been ejected.Round about during screw key, the gear teeth are not to dial Square lock bolt immediately to move back in lock housing, but one section idle running is arranged, just utilize this section idle running, the gear teeth touch the tail end of lath earlier and make it to retreat, then peg retraction Square lock bolt, at this moment, the gear teeth just touch the Square lock bolt gripper shoe, and make it withdraw from dead bolt hole.

This device with have door lock now relatively, will strengthen the pick-proof performance greatly, improved the safety factor and the sense of security.Profile and internal construction for former lock do not have big change, and it is few that institute increases cost, are easy to go into operation.

Now be further described in conjunction with schematic diagram.

Fig. 1, link-type door lock anti-picking device structural representation.

Fig. 2, gear tooth-type door lock anti-picking device structure locked state schematic diagram.

Fig. 3, gear tooth-type door lock anti-picking device structure opening schematic diagram.

The sliding nail in connecting rod (15) top (13) moves to oblique elongated slot (14) end and promptly touches an end of crank (4) V font, and at this moment, crank be a fulcrum with axle (5), makes an end of the top promotion metal bar (1) of crank (4) be exposed to Square lock bolt (Fig. 1-3).Follow closely (13) when the oblique elongated slot other end moves when connecting rod (15) top is sliding, the part in addition that at first is the V font of crank (4) is kicked up, move round about on the top of crank (4), the tension force effect of spring (2) is arranged simultaneously, metal bar (1) is got back in the Square lock bolt (3), be only then Square lock bolt gripper shoe (6) after move, and Square lock bolt is recovered in the lock housing (11).Thisly make moving of Square lock bolt and metal bar thereof, all be subjected on tapered end (7) lock core (8) dial plate (9) rotation the time stir connecting rod (15) middle part transverse process (10) be that the positive and negative rotation in the center of circle is finished with connecting rod axis (12).

The anti-picking device of gear tooth-type door lock is that Square lock bolt (3) lining has two pegs that can be ejected (2) it outer is with spring (1) and metal ring (5), and laths of metal front end (4) can eject two pegs (2) two sides of Square lock bolt (3).There is a slotted hole (7) at the laths of metal middle part, has a metal column (9) to be positioned among the slotted hole (7) on the Square lock bolt gripper shoe (8).One shifting block (11) is arranged on the center tooth of the gear teeth (19), when the gear teeth are center of circle rotation with axle (17), two limits that this shifting block (11) is being dialled gripper shoe (8) prismatic hole (16) make gripper shoe (8) do moving up and down, make the outstanding lock housing (6) of Square lock bolt (3) or regain.Square lock bolt (3) stretches out lock housing (6) back peg (2) and just stretches out, it stretches out is that the plate (14) of dialling by on the tapered end (12) is pushed ahead lath tail end (15) when rotating a circle again, and its front end is about to the both sides that two pegs (2) eject Square lock bolt (3).Regain peg, by opposite spin, moving tooth (14) has one section idle running when touching the gear teeth, rather than stir gripper shoe (8) immediately,, but take advantage of a situation in this process the tail end of lath (15) is moved backward, its front end (4) retreats from Square lock bolt (3) medium pore, after this peg (2) retraction Square lock bolt is only the moving process that Square lock bolt (3) is retracted into lock housing (6).

Claims

Anti-picking device on the concealed installation door lock, be on the basis of former concealed installation door lock key lock release system structure, parts such as the sliding nail of additional one group of parts interlock of can locking a door or open the door together, metal bar, spring, crank, laths of metal are formed, it is characterized in that, on the Square lock bolt of link-type concealed installation door lock, open an interconnection, on the metal bar wherein spring is arranged, one crank is at the strong point with the middle part axle, one end and metal bar join, the other end is positioned at the lower end of oblique elongated slot, and can be touched by the sliding nail in connecting rod top; In interconnection on the Square lock bolt of gear tooth-type concealed installation door lock, there are two the sliding nail of spring-supported metal is arranged, the butt end of its semicircular cap is close together, and occupy the central authorities of passage, a laths of metal that is 90 ° of angles withstands on the joint of the sliding nail of two metals, and the other end of this laths of metal is contacting with the plate of dialling on the lock core under the gear teeth.