CN105220947B - Access control for taking spare key - Google Patents

Abstract

The invention relates to an entrance guard for taking out a spare key. The entrance guard lock comprises an entrance guard body and a spare key, wherein a key unlocking device is also arranged in the entrance guard body, the entrance guard body is formed by mutually inserting a sliding cover with an inserting column and an entrance guard shell with a strip-shaped sliding groove, a movable clamping column sleeved with a reset spring is arranged on the entrance guard shell, one end of the movable clamping column corresponds to the strip-shaped sliding groove, and a connecting plate is arranged at the other end of the movable clamping column; the door control lock is characterized in that a key rotating lock cylinder is further arranged in the door control shell, a lock hole of the key rotating lock cylinder is formed in the side face in the door control shell, a rotating lock tongue of the key rotating lock cylinder is a spiral face, and an L-shaped push rod is connected between the spiral face and the connecting plate. By adopting the structure, the invention solves the problem that a user can obtain the spare key to directly open the door when the entrance guard fails, simplifies the operation steps and saves the door opening time of the user.

Description

Access control for taking spare keys

technical field

The invention relates to the technical field of electronic locks, in particular to an access control which uses an external key to take out a spare key when the access control fails.

Background technique

With the development of the electronic lock industry, various access control systems emerge in endlessly. Most of the existing access control systems use induction cards, fingerprints or passwords for electronic identification, and then unlock them by the drive circuit. Then, in complex electronic identification and unlocking systems, often There will be various unpredictable failures, which will lead to the failure of electronic unlocking and bring great troubles to users. In order to solve this problem, some electronic lock manufacturers have added safety devices for mechanical key unlocking on the basis of the original electronic access control. However, due to The mechanical key is not needed for daily unlocking. In hotels and other places, the spare mechanical key is usually kept by the custodian. When the access control fails, you have to find the custodian to find the mechanical key. In view of this, how to allow the user to obtain a spare key to directly open the door when the access control fails becomes a technical problem to be solved.

Contents of the invention

The purpose of the present invention is to provide a kind of access control that allows users to obtain spare keys by themselves in the case of access control failure, simplifies the steps of unlocking, and is convenient and practical for taking spare keys for the disadvantages of the prior art.

In order to achieve the above object, the technical solution of the present invention is: a kind of access control for taking a spare key, which includes an access control body with traditional electronic identification and unlocking and a spare key installed in the access control body. The key unlocking device for taking the spare key. The access control body is formed by inserting a sliding cover with a post and an access control shell with a long chute matching the post. Next to the long chute of the access control shell There is a movable card column covered with a return spring, one end of the movable card column corresponds to the long chute, and the other end of the movable card column has a connecting plate; there is also a key to turn the lock cylinder in the access control shell, and the lock of the key to rotate the lock cylinder The hole is opened on the side of the access control housing. The rotating lock tongue of the key rotating lock cylinder is a helical surface, and an "L"-shaped push rod is connected between the helical surface and the connecting plate. After installation, the "L"-shaped push rod The short head end of the push rod and the helical surface are always in a rotational conflict state, and the long head end of the "L" shaped push rod corresponds to the connecting plate;

In the normal locked state, the movable clamping column protrudes from the long chute under the action of the return spring so that the inserting column of the slide cover is stuck and cannot slide down to take out the spare key;

In the unlocked state, the external key is used to turn the key to turn the lock cylinder, so that the key turns the lock bolt of the lock cylinder to rotate, and the helical surface of the turn lock bolt drives the "L"-shaped push rod to generate displacement, and the long rod head of the "L"-shaped push rod The end is pressed against the connecting plate and drives the connecting plate and the movable clamp column to overcome the elastic force of the return spring and move backward from the long chute to withdraw from the long chute, so that the post of the slide cover can slide down in the long chute to take out the spare key.

After adopting the above-mentioned structure and method, the present invention realizes the rotation of the rotating deadbolt through the electronic key, and uses the spiral surface of the rotating deadbolt to drive the "L"-shaped push rod to generate displacement, and the long rod head end of the "L"-shaped push rod is pressed against the The connecting plate drives the connecting plate and the movable card post to move backwards against the elastic force of the return spring to withdraw from the long chute, so that the post of the slide cover can slide down in the long chute to take out the spare key; Use the same principle to realize unlocking and take out the spare key through the motor transmission device; as can be seen from the above, the present invention solves the problem of allowing the user to obtain the spare key to open the door directly when the access control fails, which simplifies the operation steps and saves the time for the user to open the door .

Description of drawings

Fig. 1 is a three-dimensional exploded schematic view of the present invention;

Fig. 2 is a three-dimensional exploded schematic diagram II of the present invention;

Fig. 3 is a three-dimensional structural schematic diagram 1 after assembly of the present invention;

Fig. 4 is a three-dimensional structural schematic diagram II after assembly of the present invention;

Fig. 5 is a three-dimensional structural schematic diagram after assembly of the present invention;

Fig. 6 is a structural schematic diagram of a motor adopted in the present invention;

Fig. 7 is a second schematic diagram of the structure of the motor used in the present invention.

detailed description

The specific implementation manner of the present invention will be described in further detail below in conjunction with accompanying drawings 1-7.

As shown in Figures 1-7, a kind of access control for taking spare keys includes an access control body 100 with traditional electronic identification and unlocking and a spare key 200 installed in the access control body 100, and is also provided in the access control body 100 for Take the key unlocking device of the spare key 200, the access control body 100 is formed by the sliding cover 10 with the insertion post 11 and the access control housing 20 having the elongated chute 21 matching the insertion post 11, which are inserted into each other. The side of the strip chute 21 of the body 20 is provided with a movable card column 30 with a back-moving spring 31, one end of the movable card column 30 corresponds to the strip chute 21, and the other end of the movable card column 30 has a connecting plate 40; 20 is also provided with a key to rotate the lock core 50, and the lock hole 61 of the key to rotate the lock core 50 is opened on the side surface in the access control housing 60, and the rotating dead bolt 51 of the key to rotate the lock core 50 is a helical surface. An "L"-shaped push rod 41 is connected with the connecting plate 40. After installation, the short rod end of the "L"-shaped push rod 41 and the helical surface always keep in a state of rotational conflict, and the "L"-shaped push rod The long rod head end of 41 corresponds to the connecting plate 40; the "L" shaped push rod 41 and the connecting plate 40 are two independent parts.

In the normal locked state, the movable post 30 protrudes from the long chute 21 under the action of the return spring 31 so that the post 11 of the sliding cover 10 is stuck and cannot be slid down to take out the spare key 200;

In the unlocked state, turn the key to rotate the lock cylinder 50 through the external key 70, so that the rotating lock tongue 51 of the key rotating lock cylinder 50 rotates, and the helical surface of the rotating lock tongue 51 drives the "L" shaped push rod 41 to generate displacement, and the "L" shaped The head end of the long rod of the push rod 41 presses against the connecting plate 40 and drives the connecting plate 40 and the movable post 30 to overcome the elastic force of the return spring 31 and move backward from the long chute 21, so that the inserting post of the slide cover 10 11 can slide in the strip chute 21 and take out spare key 200.

The key unlocking device is mainly a structural component composed of a key rotating lock cylinder 50 and an external key 70 that can make the key rotating lock cylinder 50 rotate. A battery and an identity authentication chip can be built in the key as required. An authentication chip and a clutch device are provided, and the clutch device can be driven to drive the key to rotate the lock cylinder 50 only after the external key 70 is inserted and passed the verification, otherwise it will form idling.

Another driving device of the present invention is: a rotary motor transmission device 300 is also provided in the access control housing 20, and the rotary tooth sleeve 301 of the rotary tooth motor transmission device 300 corresponds to the connecting plate 40. Tooth motor transmission device 300 includes:

A forward and reverse motor 302, the forward and reverse motor 302 has an output shaft 303;

A motor housing 304, including a mounting cavity with an extending opening;

A rotary tooth shaft 305, the shaft body of this rotary tooth shaft 305 has thread one 306;

A threaded sleeve 301, the center of the threaded sleeve 301 is a through hole, and the inner wall of the through hole has a screw thread 2 307;

One internal turning tooth spring 308;

One outer turning tooth spring 309;

After assembly, the forward and reverse motor 302 is fixed in the installation cavity of the motor housing 304; one end of the rotating tooth shaft 305 is fixedly connected with the output shaft of the forward and reverse motor 302 to realize interlocking; the outer diameter of the rotating tooth sleeve 301 is smaller than that of the motor The diameter of the protruding opening of the casing 304, the threaded sleeve 301 is sleeved on the rotary shaft 305 through the through hole so that the thread one 306 on the rotary shaft 305 and the thread two 307 in the rotary sleeve 301 are engaged with each other; The rotary tooth spring 308 is sleeved on the rotary tooth shaft 305, and the two ends of the inner rotary tooth spring 308 are located between the forward and reverse motor 302 and the rotary tooth sleeve 301; the outer rotary tooth spring 309 is sleeved on the rotary tooth sleeve 301, And the two ends of the outer rotating tooth spring 309 are located between the inner wall of the rotating tooth sleeve 301 and the motor housing 304;

When the forward and reverse motor 302 rotates in place, the second thread 307 rotates to the internal thread end of the first thread 306, the outer rotating tooth spring 309 is in a relaxed state, and the inner rotating tooth spring 308 is pressed by the rotating tooth sleeve 301 and the positive The reverse motor 302 is pressed, and the compressed inner rotary tooth spring 308 acts on the rotary tooth sleeve 301 so that the external thread end of the second thread 307 and the internal thread end of the first thread 306 are pressed against each other so that the two sections of thread in reverse engagement;

When the positive and negative rotation motor 302 reversely rotates in place, the second thread 307 rotates to the external thread end of the first thread 306, the inner rotating tooth spring 308 is in a relaxed state, and the outer rotating tooth spring 309 is driven by the rotating tooth sleeve 301 and The inner wall of the motor housing 304 is compressed, and the compressed outer rotary tooth spring 309 acts on the rotary tooth sleeve 301 so that the internal thread end of the second thread 307 and the external thread end of the first thread 306 are pressed against each other so that the two sections Threads are in reverse engagement.

The access control body 100 is a video doorbell.

The slide cover 10 has a code key for a visual doorbell.

The sliding cover 10 has a fingerprint reader of the visible doorbell.

During use, when the access control body 100 works normally, electronic locks such as a visual doorbell or combination lock or fingerprint lock or magnetic card lock can be used to open the door normally. When the access control body 100 fails, the access control body 100 of the present invention hides a mechanical key Carry out the unlocking work after the fault, when needing to take spare key 200, first external key 70 is inserted in the key rotating lock cylinder 50, at this moment, can be rotated by mechanically, let external key 70 drive the key rotating lock cylinder 50 to rotate, thereby make The key rotates the rotating deadbolt 51 of the lock cylinder 50 to rotate, and the spiral surface of the rotating deadbolt 51 drives the "L" shaped push rod 41 to generate a displacement, and the long rod head end of the "L" shaped push rod 41 is pressed against the connecting plate 40 and Drive the connecting plate 40 and the movable post 30 to overcome the elastic force of the return spring 31 and move backward from the long chute 21 to withdraw from the long chute 21, so that the post 11 of the slide cover 10 can slide down in the long chute 21 to take out the spare key 200.

If the external key 70 is an electronic key with identity verification, the lock can also be unlocked through the tooth-turning motor transmission 300. After passing the verification, the forward and reverse motor 302 will be powered, and the forward and reverse motor 302 will push the tooth-turning sleeve 301 thus drives the connecting plate 40 and the movable clamping column 30 to overcome the elastic force of the return spring 31 and move backward from the strip chute 21 to withdraw from the strip chute 21, so that the post 11 of the slide cover 10 can slide down in the strip chute 21 to take out the spare key 200, the structure of the external key 70 here is an electronic key, which can be designed accordingly according to user needs, such as only a built-in identity verification chip, or a power supply, or a clutch device is provided in the rotating lock cylinder 50, when the external key 70 After the insertion is verified, the clutch device can be driven to drive the key to rotate the lock cylinder 50, otherwise schemes such as idling will be formed.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deduction or replacement can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (5)

1. a kind of gate inhibition for taking standby key, include gate inhibition's body with conditional electronic identification unblock and be installed in gate inhibition's sheet Internal standby key, it is characterised in that：The key-unlocking for taking standby key is additionally provided with gate inhibition's body, From the slip lid with inserting column and with being provided with, gate inhibition's housing of the strip chute of the inserting column is mutually inserted and formed gate inhibition's body, The activity card column for being cased with back-moving spring is provided with by the strip chute of gate inhibition's housing, one end of activity card column corresponds to strip chute, living The dynamic card column other end has connecting plate；Key rotation lock core is additionally provided with gate inhibition's housing, the lockhole of the key rotation lock core is opened The side being located in gate inhibition's housing, the rotating lock tongue of the key rotation lock core helically face, in the helicoid and the connecting plate Between be connected with " L " shape push rod, after installation, should the quarter butt head end and helicoid of " L " shape push rod remain and rotate conflict state, The long rod head end for being somebody's turn to do " L " shape push rod corresponds to connecting plate；

Under normal locked state, activity card column stretches out the inserting column for causing the slip lid in strip chute under action of reset spring It is stuck and can not glides and take out standby key；

Under released state, key rotation lock core is rotated by external key, rotates the rotating lock tongue of key rotation lock core, is rotated The helicoid of dead bolt drives " L " shape push rod to produce displacement, and the long rod head end of " L " shape push rod is pressed on connecting plate and drives connection Plate and activity card column overcome the elastic force of back-moving spring to be moved rearwards to exit from strip chute so that the inserting column of slip lid can be in strip Glided in chute and take out standby key.

A kind of 2. gate inhibition for taking standby key according to claim 1, it is characterised in that：Also set in gate inhibition's housing Have and turn tooth transmission gear for electric motor, this turn tooth transmission gear for electric motor to turn facing cylinder corresponding with connecting plate, this turns the transmission of tooth motor Device includes：

One clockwise and anticlockwise motor, the clockwise and anticlockwise motor have an output shaft；

One motor housing, include the installation cavity volume with extending port；

One turn of tooth axle, this turns have screw thread one on the axle body of tooth axle；

One turn of facing cylinder, the center for turning facing cylinder is through hole, has screw thread two on the inwall of the through hole；Turn in one

Tooth spring；

Turn tooth spring outside one；

After assembling, clockwise and anticlockwise motor is fixed in the installation cavity volume of motor housing；Turn tooth axle one end and clockwise and anticlockwise motor it is defeated Shaft is fixedly connected with realization and interlocked；Turn facing cylinder external diameter be less than motor housing extending port diameter, turn facing cylinder pass through it is described Through hole, which is set in, to be turned on tooth axle so that the screw thread two for turning the screw thread one on tooth axle and turning in facing cylinder is intermeshed；Inside turn tooth spring It is enclosed on and turns on tooth axle, and the interior both ends for turning tooth spring is located at clockwise and anticlockwise motor and turned between facing cylinder；Turn tooth spring housing outside to exist Turn on facing cylinder, and turn the both ends of tooth spring outside positioned at turning between facing cylinder and the inwall of motor housing；

When clockwise and anticlockwise motor rotates forward in place, the screw thread two turns to the female end of the screw thread one, turns tooth bullet outside Spring is in relaxed state, inside turns tooth spring and turned facing cylinder and clockwise and anticlockwise motor to compress, be compacted in turn tooth spring effect and exist Turn on facing cylinder so that the male end of the screw thread two is mutually compressed with the female end of the screw thread one so that at two sections of screw threads In reverse engagement；

When clockwise and anticlockwise motor rotates backward in place, the screw thread two turns to the male end of the screw thread one, inside turns tooth bullet Spring is in relaxed state, turns the inwall compression that tooth spring is turned facing cylinder and motor housing outside, and the outer tooth spring that turns being compacted is made With on facing cylinder is turned so that the female end of the screw thread two is mutually compressed so that two sections of spiral shells with the male end of the screw thread one Line is in reverse engagement.

A kind of 3. gate inhibition for taking standby key according to claim 1 or 2, it is characterised in that：Gate inhibition's body is can Depending on doorbell.

A kind of 4. gate inhibition for taking standby key according to claim 3, it is characterised in that：There is visuable door on the slip lid The cryptographic key of bell.

A kind of 5. gate inhibition for taking standby key according to claim 3, it is characterised in that：There is visuable door on the slip lid The Fingerprint Identification Unit of bell.