CN100436748C

CN100436748C - Mechanical key electronic anti-theft device

Info

Publication number: CN100436748C
Application number: CNB2006100603894A
Authority: CN
Inventors: 吴斐
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-04-25
Filing date: 2006-04-25
Publication date: 2008-11-26
Anticipated expiration: 2026-04-25
Also published as: CN1858386A

Abstract

The present invention relates to an electronic anti-theft device which can be used for preventing locks from being unlocked by mechanical keys. The present invention comprises an installation bottom plate which is arranged in an electronic lock casing, and a cylindrical mechanical lock core, wherein a key hole is arranged on the upper end of the cylindrical mechanical lock core, and a circular concave cavity which is used for the bottom end of the mechanical lock core to insert and rotate is concavely arranged on the installation bottom plate. The electronic anti-theft device also comprises a contact piece type electronic switch, a miniature motor, a worm, a sliding clamping block and a transmission steel wire. When the electronic lock normally works, the contact piece type electronic switch is triggered by using the key when the mechanical lock core rotates, the miniature motor is driven to rotate, and then, the mechanical lock core can be clamped and locked by the sliding clamping block, which can prevent the action of unlocking by a mechanical key; when the failure of the circuit of the electronic lock occurs, the present invention does not influence the process of unlocking by a spare mechanical key. Thus, the present invention solves the problem of potential safety hazard of a spare mechanical unlocking device in the electronic lock.

Description

Mechanical key electronic anti-theft device

Technical field

The present invention relates to the electric lockset technical field, refer in particular to a kind ofly when the electronic lock operate as normal, prevent the electric anti-thief device that mechanical key is unblanked.

Background technology

Along with the development of lockset industry, various electronic locks emerge in an endless stream, because the electronic lock use is more convenient, therefore are widely used in every field.People unblank very convenient by electronics by modes such as plug-in cards, yet when line fault appears in electronic lock, need a standby cover mechanical unlocking device to meet an urgent need again, and therefore, electronic lock has all been installed the emergency set that a cover machinery is unblanked usually.Yet, mechanical unlocking device standby in the electronic lock has equally also brought potential safety hazard, the unprincipled fellow can directly open electronic lock by mechanical unlocking device by special means such as master key, and how solving security hidden trouble that mechanical key standby in the electronic lock unblanks becomes a difficult problem to be solved is arranged.

Summary of the invention

Purpose of the present invention is exactly provide at above-mentioned technical barrier a kind of when the electronic lock operate as normal, can prevent the electric anti-thief device that mechanical key is unblanked.

For achieving the above object, the present invention includes the column type mechanical lock that the installation base plate that is installed in the electronic lock housing and upper end have keyhole, on the installation base plate, be concaved with the round cavity that plugs rotation for the mechanical lock bottom, described device also includes contact formula electronic switch, micromachine, worm screw, slip fixture block and transmission steel wire, contact formula electronic switch is installed on a side of described circular-shaped, concave cavity, turn the protruding position of triggering described contact formula electronic switch and form on the outer circumference surface of mechanical lock, the power connection end serial connection power supply and the micromachine of contact formula electronic switch form the loop, are connected with worm screw on the output shaft of micromachine; Opposite side in described circular-shaped, concave cavity forms the chute that plugs slip for the slip fixture block, and the end that is plugged in the slip fixture block in the chute is a fastening end, and the middle part of slip fixture block also is provided with blocked hole; One end span of transmission steel wire is located at the tooth paddy position of adjacent two wrom tooths of worm screw, and the other end is fastened on the fixed leg that base plate is installed after wearing the blocked hole that strides across the slip fixture block; On the outer circumference surface of mechanical lock, also form the screens that matches with described fastening end; When mechanical lock turns to when making device be in locking-in state, the protruding position of a side is supported and is located on the contact formula electronic switch on the outer circumference surface of mechanical lock, and the slip fixture block slides into its fastening end just and is fastened in the mechanical lock screens.

After adopting said structure, when the electronic lock operate as normal, as adopt key unlocking, the rotation of rotary machine lock core, contact formula electronic switch is triggered in the protruding position on the mechanical lock periphery, and the minitype motor driving worm screw is rotated, transmission steel wire on the worm screw between two wrom tooths drives the card piece and slides to the mechanical lock direction, the fastening end of slip fixture block is fastened in the screens on the mechanical lock outer circumference surface, thereby mechanical lock can't be rotated, prevent that machinery from unblanking.And when the electronics of electronic lock unblanks partly to break down, can adopt key unlocking, the rotary machine lock core, because there is fault in electronic section, therefore, the protruding position triggering contact formula electronic switch of mechanical lock also can't be connected power supply rotates micromachine, thereby can meet an urgent need by enough key smooth opening locks.To sum up, the present invention does not influence the process of stand-by machine key unlocking when electronic lock circuit partly breaks down, simultaneously, and when the electronic lock operate as normal, can prevent the action that mechanical key is unblanked, solve the security hidden trouble of stand-by machine unlocking apparatus in the electronic lock.

Description of drawings

Fig. 1 is apparatus of the present invention perspective view.

Fig. 2 is the three-dimensional decomposition texture schematic diagrames of apparatus of the present invention.

Fig. 3 is the three-dimensional assembling of drive disk assembly of the present invention schematic diagram.

The specific embodiment

As accompanying drawing 1～shown in Figure 3, the present invention includes: be installed in the column type mechanical lock 2 that interior installation base plate 1 of electronic lock housing and upper end have keyhole 21, on installation base plate 1, be concaved with the round cavity 11 that plugs rotation for mechanical lock 2 bottoms, described device also includes contact formula electronic switch 3, micromachine 4, worm screw 5, slip fixture block 6 and transmission steel wire 7, contact formula electronic switch 3 is installed on a side of described circular-shaped, concave cavity 11, turn the protruding position 22 of triggering described contact formula electronic switch 3 and form on the outer circumference surface of mechanical lock 2, the power connection end serial connection power supply and the micromachine 4 of contact formula electronic switch 3 form the loop, are connected with worm screw 5 on the output shaft of micromachine 4; Opposite side in described circular-shaped, concave cavity 11 forms the chute 12 that plugs slip for slip fixture block 6, and the end that is plugged in the slip fixture block 6 in the chute 12 is a fastening end 61, and the middle part of slip fixture block 6 also is provided with blocked hole 62; One end span of transmission steel wire 7 is located at the tooth paddy position of adjacent two wrom tooths of worm screw 5, and the other end is fastened on the fixed leg 13 that base plate 1 is installed after wearing the blocked hole 62 that strides across slip fixture block 6; On the outer circumference surface of mechanical lock 2, also form the screens that matches with described fastening end 61; When mechanical lock 2 turns to when making device be in locking-in state, the protruding position 22 of a side is supported and is located on the contact formula electronic switch 3 on the outer circumference surface of mechanical lock 2, and slip fixture block 6 slides into its fastening end 61 just and is fastened in mechanical lock 2 screens 23.Described protruding position 22 is for being molded over the end of the circular arc strip shape body on mechanical lock 2 outer circumference surfaces.Described screens 23 is the stairstepping draw-in groove that circular arc strip shape body on mechanical lock 2 outer circumference surfaces and outer circumference surface form.The top of described circular-shaped, concave cavity 11 also is concaved with a backstop groove 111; And have a bar-shaped trough 24 at the bottom face of mechanical lock 2, in this bar-shaped trough 24, be equiped with the lesser calorie bar 8 of a length less than bar-shaped trough 24 length; When mechanical lock 2 was in the quick rotation state, the end of the lesser calorie bar 8 that stretches out from bar-shaped trough 24 under force of periphery effect was fastened in the backstop groove 111 just.Described contact formula electronic switch 3, micromachine 4, worm screw 5, slip fixture block 6 and transmission steel wire 7 are installed in to be installed on the base plate 1.

During use, when the electronic lock operate as normal, circuit part is in normal operating conditions, at this moment, when the keyhole 21 in the employing mechanical key insertion mechanical lock 2 is unblanked, can drive mechanical lock 2 rotations, in mechanical lock 2 rotating process, 22 ends that promptly are molded over the circular arc strip shape body on mechanical lock 2 outer circumference surfaces, protruding position that are positioned on mechanical lock 2 peripheries are pressed on the contact of contact formula electronic switch 3, thereby connecting power supply rotates micromachine 4, rotation along with the worm screw 5 of micromachine 4 outputs, end at the transmission steel wire 7 between two wrom tooths on the worm screw 5 moves to mechanical lock 2 directions, because the other end of transmission steel wire 7 fixedly is wrapped on the fixed leg 13, therefore, being worn the slip fixture block 6 of striding by transmission steel wire 7 also slides towards mechanical lock 2 directions, making the fastening end 61 of slip fixture block 6 be fastened on screens 23 on mechanical lock 2 outer circumference surfaces is on the stairstepping draw-in groove that forms of circular arc strip shape body on mechanical lock 2 outer circumference surfaces and outer circumference surface, mechanical lock 2 is blocked can't rotate, thereby prevents mechanical unlocking action.In addition, adopt very energetically rapidly rotation, attempt the fast reaction time that crosses mechanical key electronic anti-theft device of the present invention, when mechanical lock 2 also is not stuck, open lock in advance if the unprincipled fellow inserts the back with key; At this moment, the lesser calorie bar 8 in the bottom face bar-shaped trough 24 of the mechanical lock among the present invention 2; When mechanical lock 2 is in rotary state at full speed, under force of periphery effect, rotate from bar-shaped trough 24, the end of lesser calorie bar 8 is fastened in the backstop groove 111 on circular-shaped, concave cavity 11 tops just and blocks and can't unblank; Because door lock uprightly is installed on the door, when opening the lock with the key normal rotating machinery lock core 2, this lesser calorie bar 8 can not rotate bar-shaped trough 24 under action of gravity and influence is unblanked.

And when the electronics of electronic lock unblanks partly to break down, can adopt mechanical key to unblank, rotary machine lock core 2, because there is fault in electronic section, therefore, even the protruding position of mechanical lock 2 22 triggering contact formula electronic switches 3 also can't be connected power supply micromachine 4 is rotated, thereby can meet an urgent need by enough key smooth opening locks.To sum up, the present invention does not influence the process of stand-by machine key unlocking when electronic lock circuit partly breaks down, simultaneously, and when the electronic lock operate as normal, can prevent the action that mechanical key is unblanked, solve the security hidden trouble of stand-by machine unlocking apparatus in the electronic lock.

Claims

1, mechanical key electronic anti-theft device, include: be installed in the column type mechanical lock (2) that interior installation base plate (1) of electronic lock housing and upper end have keyhole (21), on installation base plate (1), be concaved with the round cavity (11) that plugs rotation for mechanical lock (2) bottom, it is characterized in that: described device also includes contact formula electronic switch (3), micromachine (4), worm screw (5), slip fixture block (6) and transmission steel wire (7), contact formula electronic switch (3) is installed on a side of described circular-shaped, concave cavity (11), turn the protruding position (22) of triggering described contact formula electronic switch (3) and form on the outer circumference surface of mechanical lock (2), the power connection end serial connection power supply and the micromachine (4) of contact formula electronic switch (3) form the loop, are connected with worm screw (5) on the output shaft of micromachine (4); Opposite side in described circular-shaped, concave cavity (11) forms the chute (12) that plugs slip for slip fixture block (6), and the end that is plugged in the slip fixture block (6) in the chute (12) is fastening end (61), and the middle part of slip fixture block (6) also is provided with blocked hole (62); One end span of transmission steel wire (7) is located at the tooth paddy position of adjacent two wrom tooths of worm screw (5), and the other end is fastened on the fixed leg (13) that base plate (1) is installed after wearing the blocked hole (62) that strides across slip fixture block (6); On the outer circumference surface of mechanical lock (2), also form the screens that matches with described fastening end (61); When mechanical lock (2) turns to when making device be in locking-in state, the protruding position (22) of a side is supported and is located on the contact formula electronic switch (3) on the outer circumference surface of mechanical lock (2), and slip fixture block (6) slides into its fastening end (61) just and is fastened in mechanical lock (2) screens (23).

2, mechanical key electronic anti-theft device according to claim 1 is characterized in that: described protruding position (22) is for being molded over the end of the circular arc strip shape body on mechanical lock (2) outer circumference surface.

3, mechanical key electronic anti-theft device according to claim 1 is characterized in that: described screens (23) is the stairstepping draw-in groove of circular arc strip shape body on mechanical lock (2) outer circumference surface and outer circumference surface formation.

4, according to claim 1 or 2 or 3 described mechanical key electronic anti-theft devices, it is characterized in that: the top of described circular-shaped, concave cavity (11) also is concaved with a backstop groove (111); And have a bar-shaped trough (24) at the bottom face of mechanical lock (2), in this bar-shaped trough (24), be equiped with the little card article (8) of a length less than bar-shaped trough (24) length; When mechanical lock (2) was in the quick rotation state, the end of the little card article (8) that stretches out from bar-shaped trough (24) under force of periphery effect was fastened in the backstop groove (111) just.

5, mechanical key electronic anti-theft device according to claim 1 is characterized in that: described contact formula electronic switch (3), micromachine (4), worm screw (5), slip fixture block (6) and transmission steel wire (7) are installed in to be installed on the base plate (1).