CN101481965A - Electric device for cam lock - Google Patents

Abstract

The invention relates to an electric device for rotating a lock bolt, comprising a motor (41), a screw rod (42) coaxially connected with the motor and a back follower (50) which is connected with the crew rod and is rotated along with the motor to make linear movement. The electric device is characterized in that the back follower comprises a sleeve pipe (56) and a buckle (61), wherein the sleeve pipe (56) is matched and rotated along with the screw rod to make linear movement, the inner hole (55) of the sleeve pipe (56) is in sliding fit with the outside diameter of the screw rod (42), and two pinholes (43 and 44) which are axially perpendicular to the inner hole (55) of the sleeve pipe are arranged at the sleeve pipe (56); and two legs (63 and 64) of the buckle (61) are respectively caused to penetrate through the two pinholes (43 and 44) of the sleeve pipe and are in threaded fit with the screw rod (42), thereby causing the buckle (61) and the sleeve pipe (56) to make the linear movement along with the screw rod (42) during the rotation thereof.

Description

A kind of electric device that is used for turning-bolt lock

The application is to be that June 11, application number in 2007 are 200710041833.2, are entitled as the dividing an application of Chinese invention patent application of " a kind of turning-bolt lock and electric device thereof " applying date.

Technical field

The present invention relates to coded lock, more particularly, relate to the electronic password lock that a kind of strongbox is used.

Background technology

In prior art, be used to control the coded lock lock body of safe door, usually the square dead bolt or the wedge shape dead bolt that directly go out directly advanced in employing.The withdrawal of dead bolt is defined under normality (lock-out state), and this dead bolt forms obstruction to Door handle or bolt, the qualification that releasing is regained dead bolt is by at the correct password of input on the strongbox cipher input and after by predefined program validation an electric device action being achieved, and dead bolt to be reset to normality (lock-out state) be by due to the action of reset spring.

Patent US5142890, US5134870 and US6786519 disclose several turning-bolt lock structural concepts.In this such scheme, dead bolt is shaped as D type (promptly semicircle or 180 degree are fan-shaped), the extension spring that employing is located between lock box inwall and the dead bolt is put (lockset position of coupler) to the back-moving spring that produces position (upper lock position) as dead bolt from changeing carry, is that head by the action component (iron core rod) of a controlled electromagnet (solenoid) stretches out the back and directly a breach that is located at dead bolt formed obstruction and realization to the locking of dead bolt.

There is following shortcoming in technique scheme:

When running into illegal brute force and unblank situation, very big external force is directly delivered to dead bolt by Door handle or bolt, and dead bolt is directly passed to this external force on the head of the action component (iron core rod) of electromagnet (solenoid), because the head of dead bolt and this action component is that line contacts, stress is very concentrated, causes the damage of action component and electromagnet (solenoid) or lock body part easily;

D type dead bolt shape and size are bigger, and the reset tension spring of being joined also needs flexible than large space, and the two occupies bigger lock body inner space, cause dwindle the lock body volume or in lock body, increase miscellaneous part very difficult.

In addition, prior art at the coded lock that is used for controlling safe door, there are the following problems for the electric device that is adopted: adopt the electromagnet electric quantity consumption of unidirectional (by spring reset) big, this point is very big shortcoming to the strongbox coded lock that uses dry cell power supply; If the employing bidirectional electromagnet except complex structure, also needs a bigger installing space.

Adopt motor and will rotatablely move and convert straight-line mechanism and screw mandrel screw thread structure to, because lock body inner space restriction, usually use the high-speed motor of small size, employed screw mandrel screw thread structural volume is also very little, be difficult to once aim at button at screw mandrel and screw thread under the situation of rotation at a high speed, as long as the stuck motor stall phenomenon that causes of screw mandrel screw thread will take place in misalignment, and then damage screw mandrel and screw thread or damage motor.

Summary of the invention

Purpose of the present invention aim to provide a kind of be subjected to preventing when illegal brute force is unblanked situation in the lock body electric device directly ruined, can illegal powerful turning-bolt lock that rationally decomposes to a plurality of positions of lock body; And provide a kind of electric device that makes on the screw mandrel screw thread button easily and avoid the motor stall.

Technical scheme of the present invention comprises:

A kind of turning-bolt lock, it comprises: the lock box with at least one breach, the lid that matches with this lock box, one can be produced the dead bolt that proceeds to the enable possition to latched position and commentaries on classics from breach, one stops that controllably dead bolt is from the locking device of latched position to the enable possition indentation, and flexible member that can make dead bolt be reset to latched position from the enable possition, wherein: described locking device comprises a block and an electric device, described block has a cylinder, and this cylinder is packed in first chute that is located at correspondence position in the described lock box and formed with it and is slidingly matched; Be in latched position at dead bolt, the first limit facade of cylinder is relative with dead bolt first facade plane, the second limit facade of cylinder is relative with first facade plane of follower head on being located at electric device, other facade of this follower head is relative with the corresponding facade plane of second chute in being located at lock box, thereby dead bolt is limited to latched position; After electric device obtains to allow to unblank to authorize, follower on it moves to the indentation direction and makes second chute vacate the space that cylinder is partly entered, dead bolt changes into to described enable possition under external force, force in the second chute space that cylinder first facade partly enters cylinder to have vacated simultaneously, and then dead bolt can change and proceeds to the enable possition; Also be provided with a groove on the described block, on dead bolt, be provided with a projection with this groove correspondence position, after described external force was cancelled, flexible member made dead bolt reset to described latched position from described enable possition, and the projection on the dead bolt entered groove on the block and drove block and reset this moment.

In technique scheme, dead bolt is a fanning strip, its fan-shaped angle is between degree is extremely spent, which is provided with and be located at an axis hole that is slidingly matched of lock box correspondence position, the dead bolt second scallop facade bears external force, and the first scallop facade is passed to this external force the first limit facade of the cylinder on the block by plane contact.

Further, on described lock box and lid and dead bolt correspondence position, be respectively equipped with first guide rail and second guide rail, in lid, also be provided with the axis hole that matches with axle, be used for qualification and guiding dead bolt.

In technical solution of the present invention, the cylinder that is located on the block is circular cylinder partly, and first chute that is located at the lock box correspondence position is made of an external cylindrical surface and an inner cylinder face concentric with this circular cylinder and that be slidingly matched; The first limit facade of cylinder bears the external force of transmitting by contacting with dead bolt first facade plane, the second limit facade of this external force by cylinder contacts with first facade plane of described sliding part head and passes to the sliding part head, and second facade of sliding part head and the 3rd facade pass to external force lock box again by second chute; Described block has a cylinder on circular cylinder top that is located at part, and the groove that is located on this cylinder is the sector grooves of circular arc limit opening, is cylindrical with the set projection of groove correspondence position on dead bolt.

Further, described lid be provided with one be loaded on the described block cylindrical and with the circular cylindrical cavity that this cylinder is slidingly matched, be used for further location and guiding to block.

In technical solution of the present invention, described flexible member is a biasing spring, its first ring spring is loaded on the axle of lock box, second ring spring is loaded on and is located near another axis of a cylinder of axle, free end is fastened in the groove on the described dead bolt correspondence position, has the power of tending to the latched position rotation so that dead bolt is applied.

In technical scheme of the present invention, a kind of electric device that is used for turning-bolt lock or other Safe lock also is provided, it comprises: motor, with the coaxial screw mandrel that is connected of this motor and with this screw mandrel is connected and straight line moves with revolution follower, it is characterized in that, described follower has a solid polyhedron head, this head can be put into second chute that is located at described lock box and be slidingly matched with it, relative with the first limit facade plane of described cylinder when described follower extended position, other facades of this head are relative with corresponding facade plane in second chute.

In technique scheme, described follower comprises a casket body, this casket body has a solid head, its head first facade is relative with the first limit facade plane of described cylinder when described follower extended position, and its head second facade is relative with corresponding facade plane in second chute respectively with the 3rd facade; In the cavity of casket body, be equipped with one and match with screw mandrel and rotate and sleeve pipe that straight line moves, drive the casket body when this sleeve pipe moves and move with this screw mandrel.

Further, the endoporus of described sleeve pipe is a unthreaded hole that is slidingly matched with the screw mandrel external diameter, on sleeve pipe, be provided with two with the axially vertical apertures of cover pipe orifice,, the diameter of two apertures just in time pass respectively a buckle two legs,, this buckle penetrate above-mentioned two apertures and after, its two legs and being stuck in effectively in the wire rod thread of correspondence position is when screw mandrel rotates, this buckle and sleeve pipe move as straight line thereupon, and then drive casket body moves.

Preferably, two cylinders that can also stretch out at described sleeve pipe two ends and on be respectively installed with spring and, the other end of spring is limited by plane, casket body cavity top, the other end of spring is limited by casket body cavity end plane.

In technical solution of the present invention, be provided with the fixed leg that is used to install microswitch at described lock box, when changeing, dead bolt proceeds to the enable possition, just in time touch described microswitch, make it to disconnect or closure; Also be provided with the fixed leg that is used to install control circuit board at described lock box, and the breach and the breach that are used to install electric connector.

In technical solution of the present invention, have identical counterbore at the installing hole that is provided with on the lock box with the installing hole that on lid, is provided with, lock body can be installed in the mode that its lock box face contacts with door-plate, also can install in the mode that its lid face contacts with door-plate.

Adopt technique scheme, make the present invention compare, have the following advantages with existing turning-bolt lock:

1. adopt block and slip rotational structure thereof, bear external force and suffered power is delivered to lock box in the mode that face contacts in the mode of face contact, bear with the electric device follower that transmits external force and adopt spring to be connected with screw mandrel, thereby prevent the destruction of external force electric device with the motor drive shaft of electric device.

2. again pass to lock box by dead bolt to block and be delivered to the follower solid head of electric device by block after in this external force, external force is broken down into the power of both direction at least in this process, reduce stress and concentrated, improved the security performance of lock body on the whole.

3. adopt the biasing spring structure that the planar dimension of dead bolt is dwindled, solved the extension spring bigger problem that takes up space of using simultaneously.

4. disclosed electric device is provided with the structure that leads and cushion spring the stuck problem of motor stall that causes of screw mandrel is solved owing to adopt the structure that buckle cooperates with wire rod thread to be set on the sleeve pipe and to adopt at the sleeve pipe two ends.

5. in the lock body circuit board can be set, electric connector, microswitch etc., dynamo-electric in conjunction with tight, highly versatile.The used part of latch mechanism is few, and is simple in structure, is easy to processing and installation.

Description of drawings

In order to allow those skilled in the art further understand the present invention, described in detail below in conjunction with accompanying drawing.

Fig. 1 is the structural profile schematic diagram of the present invention in upper lock position;

Fig. 2 is the structural profile schematic diagram of the present invention at lockset position of coupler;

Fig. 3 is a block structural representation of the present invention;

Fig. 4 is a dead bolt structural representation of the present invention;

Fig. 5 is a biasing spring schematic diagram of the present invention;

Fig. 6 is dead bolt of the present invention, biasing spring and lock box assembly relation schematic diagram;

Fig. 7 is an electric device schematic diagram of the present invention;

Fig. 8 is an electric device partial cutaway schematic of the present invention;

Fig. 9 is a casket body structure schematic diagram of the present invention;

Figure 10 is a screw structure schematic diagram of the present invention;

Figure 11 is a figure sleeve structure generalized section of the present invention;

Figure 12 is a sleeve structure schematic diagram of the present invention;

Figure 13 is a lock box structural representation of the present invention;

Figure 14 is a lid structural representation of the present invention.

The specific embodiment

On axle 110 in the lock box pack into by the axis hole on it 24 from Fig. 1 and the fan-shaped as can be seen dead bolt 20 of Fig. 2, can in 90 degree left and right sides scopes, pivot.The planar thickness of the height of the circular cylinder 31 of block 30 and the height of first chute 130 and dead bolt 20 is approaching substantially, and its motion is also carried out in same plane.

In conjunction with Fig. 3 and Fig. 4, when assembling, earlier dead bolt 20 is packed into, then the circular cylinder 31 of block 30 is packed into first chute 130 in the lock box, this chute is made up of with an inner cylindrical wall face 132 that is located at its opposite a semi-cylindrical 131 that is located in the lock box, distance between the two just in time is the annulus width of the circular cylinder 31 of block 30, but need guarantee the slip cooperating relationship between them.Block 30 pack into the back its on cylinder 38 cover on dead bolt 20, when latched position, the cylinder 23 that resets on the dead bolt 20 should be positioned at the triangular groove 35 of block 30.

Be in latched position at dead bolt 20, when just the follower 50 of electric device is in extended position, the head 59 of follower is positioned at the top of second chute 150, the circular cylinder 31 of limit stop 30 is along rotation counterclockwise among the figure, because block 30 first facades 32 have withstood first facade 21 of dead bolt, so dead bolt 20 is locked.

Under dead bolt 20 blocked states, if the situation that illegal brute force is unblanked takes place, that is to say, a very big external force is applied to the handle of safe door or draws retaining device, this external force at first reaches second facade 22 of dead bolt 20, reach the circular cylinder 31 of block 30 again through first facade 21 of dead bolt, reach the head 59 of follower again, second chute 150 by lock box 10 passes to lock body at last.It should be noted that, the transmission of above-mentioned external force all is to be undertaken by the mode of plane contact, and this external force through be broken down into after solid head 59 of follower respectively with head second facade 52 vertical and and head the 3rd facade 53 vertical two component, it is concentrated to have reduced stress thus.To be connected with driving between the electric device 40 be flexible to follower 50 in addition, and have only follower head 59 to bear above-mentioned external force, screw mandrel 42 does not bear or bears external force seldom, thereby the damage of having avoided external force to directly act on electric device and having caused, the ability that the illegal brute force of resistance of whole lock body is unblanked is strengthened.

Fig. 5 shows the structure of back-moving spring 70, Fig. 6 show this spring pack into lock box 10 and with the assembly relation of dead bolt 20.This back-moving spring is a biasing spring, its big ring spring 71 is set on the axle 110, ringlet spring 72 is set on the interior post 111 of lock box, free end 73 is stuck in the groove 25 on the dead bolt 20, and this biasing spring keeps applying to dead bolt 20 and makes it have the power of tending to counter clockwise direction rotation shown in Figure 1 after assembling.

The unlatching and the reseting procedure of this turning-bolt lock are as follows:

When the input unit of strongbox, receive as keyboard, magnetic card or fingerprint scanner etc. that 40 actions of control electric device are moved follower 50 behind the correct unlock instruction, remove locking to dead bolt 20.In the present embodiment, receive and give after the open command motor 41 logical forward currents, it is just being changeed and drive follower 50 and move, cause to make second chute 150 vacate the space 151 that cylinder 31 parts are entered along the indentation direction.This moment is if rotate the safe door handle or draw retaining device with external force, dead bolt 20 overcomes the resistance of biasing spring 70 under this external force effect, rotate to clockwise direction shown in Figure 2, lock first facade 32 that 20 first facade 21 forces in cylinder 31 this moment, pushing away cylinder 31 and turning over an angle and make the part of cylinder 31 enter the second chute space of having vacated 151, and then dead bolt 20 turns about 90 degree to the enable possition along clockwise direction shown in Figure 2; When said process began, the projection 23 on the dead bolt was arranged in the groove 35 on the block, went to enable possition while cylinder 31 at dead bolt 20 and turned over an angle, and the projection 23 on the dead bolt 20 breaks away from grooves 35.And arrive enable possitions at dead bolt 20, the projection 23 when the fan-shaped opening edge of groove 35 is just in time aimed at dead bolt 20 and resetted on it must through movement locus on.

After imposing on handle or drawing the external force of retaining device to cancel, dead bolt 20 is resetted to latched position from the enable possition, dead bolt rotates to counter clockwise direction shown in Figure 2, the fan-shaped opening edge of the groove 35 of the projection 23 of this moment on the dead bolt 20 from the block 30 enters groove 35, and force in another facade 36 of groove 35, thereby drive the space 151 that block 30 goes back to the angle that is turned over when opening and vacates second chute 150 that its cylinder 31 occupies when opening.After dead bolt 20 and block 30 reset, control circuit makes its counter-rotating and drives follower 50 for motor 41 logical reversing the currents and moves along stretching out direction, enter the space 151 of second chute 150 fully up to the solid head of follower, block 30 is defined once more, and dead bolt is also locked once more.

Fig. 7 illustrates a kind of turning-bolt lock or used electric device of other strongbox of being used for, wherein motor 41 is commercially available direct current generators, this motor can be fixed in the cavity 17 that is provided with on the lock box 10, the motor drive shaft hole 45 on the screw mandrel 42 of packing into, because the moment of being transmitted is very little, can adopt easy interference fit.Casket body 60 is except that outline and second chute 150 are slidingly matched, and the wall of its inside casing both sides also will be slidingly matched with sleeve pipe 56 lateral surfaces, when sleeve pipe 56 straight lines move, promotes casket bodies 60 moving linearlies by forcing in cover two springs 67,68 thereon.So structure is set, and one of them effect is exactly when impact external force takes place, and the lock body vibrations are violent, sleeve pipe 56 is deviate from from casket body 60, thereby caused fault.Adopt above-mentioned two springs 67,68 then can play the effect of damping vibration, make the maintenance certain pressure between sleeve pipe 56 and the casket body 60 simultaneously, prevent to be shaken backward dislocation.

Another effect that these two springs are set is that buckle 61 is play the guiding role from the position that extreme position (just stretch out put in place and indentation put in place) carries out the transition to the screw thread snap fastener of screw mandrel 42.As Fig. 8 and shown in Figure 10, on screw mandrel 42, be provided with two gathering sills 47 and 48, when the two legs 63,64 of buckle 61 when being arranged in gathering sill 47 and 48 just in time follower 50 be in above-mentioned extreme position, till no matter forwarding unlatching to from dead bolt 20 from latched position, still dead bolt 20 resets to latched position from the enable possition, the two legs 63,64 of buckle 61 all will carry out the transition to position with the wire rod thread snap fastener from the gathering sill on the screw mandrel 42 47 or 48, and one of necessary condition that carries out the transition to this position is exactly 63,64 1 end thrusts of two legs that need to give buckle 61.And being set, these two springs 67,68 just satisfied this condition.From Fig. 7, Fig. 9 and Figure 12 as can be seen, these two springs 67,68 are enclosed within respectively on two cylindrical shoulders 57,58 of sleeve pipe 56 and by two end faces location of cuboid of its middle part projection, and the other end of spring 67,68 is limited by two end faces 62 and 69 of casket body 60 cavitys respectively, so no matter in what position, these two springs 67,68 all to sleeve pipe 56 in other words the two legs 63,64 of buckle 61 keeping certain end thrust.Say from another point of view, cooperate the two legs 63,64 that changes into by a buckle 61 of above-mentioned usefulness to form with the screw thread of screw mandrel 42 traditional screw mandrel screw thread and cooperate, an outstanding technique effect is exactly can avoid transferring damage because of killing of wire rod thread and screw thread causes motor 41 to be blocked.Above-mentioned stall has two kinds of possibilities, one, and the position on the buckle is forbidden or angular deviation generation screw thread is killed; Its two, other mechanical breakdown takes place, the cylinder 31 of block 30 fails to reset, and causes follower 50 to run into obstacle when direction moves to stretching out.Because in technical scheme of the present invention, the two legs 63 of buckle 61,64 with corresponding hole 43, between 44 and and screw mandrel 30 screw threads between have certain clearance, leg 63,64 also have certain elasticity, they are flexible with cooperating of screw mandrel 42 screw threads, even above-mentioned two kinds of situations take place, the two legs 63 of buckle 61,64 with screw mandrel 42 screw threads only can produce skidding, be that screw mandrel 42 is in normal rotation, but straight line does not take place for buckle 61 and sleeve pipe 56 moves, thereby also the stall phenomenon can not take place, thereby avoided motor 41 that impaired phenomenon takes place because of stall.

These two springs are set, and to also have an effect be to be in latched position when dead bolt 20, by block 30 follower 50 is stopped under external force, and when this moment, control circuit rotated it for motor 41 logical forward currents, sleeve pipe 56 compression springs 68, thereby guarantee not take place the stall phenomenon, after external force removes, follower 50 will slide into the enable possition under the effect of spring 68, still guarantee the unlatching of lock; When dead bolt 20 is in the enable possition, there is external force to stop and by back-moving spring 70 dead bolt 20 returned to latched position, block 30 has occupied the space of follower 50 heads, and when this moment, control circuit rotated it for motor 41 logical reversing the currents, leading screw 42 will compress spring 67, thereby guarantee the stall phenomenon does not take place, after external force removes, follower 50 will slide into locked position under the effect of spring 67, guarantee closing of lock.

Figure 13 and Figure 14 illustrate the structure of lock box 10 of the present invention and lid 80, wherein, two cylinders 18,19 are used for fixing a microswitch, this switch is used to detect dead bolt 20 and whether has been in unlatching or lock-out state, when dead bolt 20 arrives the enable possition or is reset to from the enable possition the process of latched position from latched position, dead bolt 20 can touch this switch, thereby produces a signal of telecommunication.In lock box, also be provided with three cylinders 12,13,14 that are used to install control circuit board, and the breach 15,16 of connector mounting.

Be provided with screw 11 and through hole 801 in lock box 10 and the lid 80 respectively, the two can be fixed with the screw that matches.

In addition, the dead bolt 20 that is used for that is provided with in the lock box 10 changes breach 120 its opening sizes of advancing or producing radius size less than dead bolt 20.That is to say that dead bolt 20 can not take out by along continuous straight runs from breach 120.

Consider from the globality of structure, also on locking closure 80, be provided with the following structure that matches with lock box 10:

Be used for lock box 10 install the back strengthen two of bulk strengths respectively with 10 2 breach 120 of lock box and 15 tongues that match 802 and 803, assemble back two breach and play the seam positioning action;

Be used for the circular cylindrical cavity 86 to cylinder 38 location of block 30, as axis hole, cavity 86 has slip cooperating relationship with cylinder 38;

Be used for being located at axle 110 circular cylindrical cavities that position 85 in the lock box 10, as axis hole, cavity 85 has slip cooperating relationship with axle 110, and is corresponding with the guide rail 130 in being located at lock box 10, is provided with guide rail 83, reliably rotates flexibly to guarantee dead bolt 20;

Be provided with two ribs 81 and 82 at installation electric device (d.c. motor) correspondence position, be used for fixing motor; Also be provided with rib 84, be used to limit follower 50 at second chute, 150 correspondence positions.

On lock box 20, also be provided with and be used to install the installing hole 75 and 76 that pick-proof is heavily locked dress, and on lock box 10 and lid 80, all be provided with and be used for lock body is installed in installing hole 77,78,79 and 87,88,89 on the safe door.Need to prove that satisfy different installation requirements in order to provide, above-mentioned installing hole all is provided with identical counterbore.So, no matter be chamber door to be pasted at the lock box back side lock body is installed, still the lid back side pasted chamber door lock body is installed, above-mentioned setting can both be satisfied.

Although relate to a kind of turning-bolt lock and carried out special description disclosed with reference to present embodiment, but those skilled in the art can understand, under the situation that does not depart from scope and spirit of the present invention, can carry out all conspicuous modification of form and details to it.Therefore, embodiment described above is illustrative and not restrictive, and under the situation that does not break away from the spirit and scope of the present invention, all variations and modification are all within the scope of the present invention.

Claims (3)

1. electric device that is used for turning-bolt lock, it comprises: motor (41), with the coaxial screw mandrel that is connected of this motor (42) and with the follower (50) that this screw mandrel is connected and straight line moves with revolution, it is characterized in that described follower comprises:

One matches with described screw mandrel (42) and rotates and sleeve pipe (56) that straight line moves with this screw mandrel, the endoporus (55) of described sleeve pipe (56) and the external diameter of described screw mandrel (42) are slidingly matched, on described sleeve pipe (56), be provided with two with the axial vertical aperture (43,44) of cover pipe orifice (55); And

A buckle (61), the two legs of this buckle (63,64) passes described two apertures (43,44) of described sleeve pipe respectively, and form threaded engagement, thereby described buckle (61) and sleeve pipe (56) are moved thereupon as straight line with described screw mandrel (42).

2. electric device as claimed in claim 1, it is characterized in that, described follower (50) also comprises a casket body (60), described sleeve pipe (56) is installed in the cavity of described casket body (60), described casket body (60) also has a solid head (59), and the part that matches of each facade of this solid head and described turning-bolt lock is come transmission power in the mode of plane contact.

3. electric device as claimed in claim 2, it is characterized in that, be respectively installed with spring (67,68) on two cylinders (57,58) that stretch out at described sleeve pipe (56) two ends, the other end of spring (67) is limited by plane, casket body (60) cavity top (62), and the other end of spring (68) is limited by casket body (60) cavity (66) end plane (69).

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