JP3097445U - Adapter for electric lock - Google Patents

Abstract

An electric lock is realized at low cost.
An electric lock includes an adapter main body and a remote controller for transmitting a locking / unlocking signal to the adapter main body. The adapter body A includes a U-shaped engaging means C that fits into a knob L of a thumb-turn lock S provided on a door, and a driving means D that rotates the engaging means C in an unlocking direction or a locking direction. By simply attaching the adapter body A to the knob L of the thumb turn lock S of the door by engaging the engagement means C, an electric lock can be easily realized, and the door can be reduced without modifying the door. Electric lock can be realized at low cost.
[Selection diagram] Fig. 1

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to an electric lock adapter capable of electrically locking and unlocking a thumb lock.
[0002]
[Prior art]
The electric lock is a type in which an electromagnetic solenoid or an electric motor built in a lock box is remotely operated to perform locking and unlocking operations.
[0003]
That is, in the case of using an electromagnetic solenoid, for example, a lock and a lock are unlocked by connecting a cylinder lock and a latch bolt which are rotated by a thumb turn or a key with an engaging piece and moving the engaging piece with an electromagnetic solenoid. It is a structure to perform.
[0004]
On the other hand, in the case of using an electric motor, for example, a rack gear is formed on the dead bolt of the thumb-turn lock, and this rack gear and the electric motor are connected via a reduction gear, and the electric motor is rotated forward and reverse to reduce the dead bolt. The structure is such that locking and unlocking are performed by moving forward and backward.
[0005]
As described above, since the structure is different from that of a normal door lock, in order to use an electric lock with an existing door, all the existing ones (lock box, thumb turn lock, etc.) must be removed and replaced. Did not.
[0006]
[Problems to be solved by the invention]
However, as described above, it is expensive to replace an existing lock or the like with an electric lock in its entirety.
[0007]
Also, the electric lock to be attached and the ordinary door lock have different structures, so their shapes are naturally different. Therefore, once the door has been repaired and replaced with an electric lock, it is difficult to return to the state before the replacement, and there is a problem that it is particularly difficult for a rental house or the like to move due to relocation.
[0008]
Therefore, an object of the present invention is to realize an electric lock at low cost and to be able to return to the previous state even when moving.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, according to the present invention, an engagement means having a U-shape which is fitted to a knob portion of a thumb-turn lock provided on a door, and a drive for turning the engagement means in an unlocking direction or a locking direction. Means, wherein the driving means rotates the engaging means based on the locking / unlocking signal to perform locking and unlocking.
[0010]
By employing such a configuration, the U-shaped engagement means can be fitted to the knob portion of the thumb-turn lock of the door. Therefore, the door can be locked and unlocked when the driving means unlocks or rotates the locking means in the locking direction based on the locking and unlocking signal. Therefore, the electric lock can be realized at low cost because the door does not need to be modified.
[0011]
At this time, it is possible to adopt a configuration in which the electric lock adapter includes an adapter main body including an engagement unit and a driving unit, and a remote controller that transmits a locking / unlocking signal to the adapter main body.
[0012]
By adopting such a configuration, unlocking and locking operations can be performed by a remote controller (remote controller).
[0013]
At this time, it is also possible to adopt a configuration in which the adapter body is detachably attached to the door by a locking means.
[0014]
By adopting such a configuration, the adapter main body can be attached to and detached from the door. Therefore, if the adapter main body is attached to the door, the door can be easily locked as an electric lock. Also, if the adapter body is removed from the door, it can be returned to the state before the attachment.
[0015]
At this time, the locking means may be a double-sided tape, or the locking means may be provided on the adapter body with a mounting frame mounted on the door surface and a projection engaging with the frame. It is possible to adopt a configuration that can be detachably attached to the camera.
[0016]
At this time, the remote control has an infrared transmitting means, and after transmitting a confirmation pulse of a predetermined width on the remote control side, transmits a predetermined number of pulses as a locking / unlocking signal within a predetermined time, and Infrared receiving means is provided in the adapter body, when receiving the confirmation pulse, starts counting the received pulses, decodes the locking / unlocking signal based on the number of received pulses, and locks / unlocks Can be adopted.
[0017]
By adopting such a configuration, the number of pulse combinations that must be transmitted within a predetermined time for locking and unlocking can be far greater than that of a conventional infrared remote controller, and the combination also changes the number of pulses. Therefore, a lock system with high security can be constructed.
[0018]
[Embodiment of the invention]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0019]
The electric lock adapter of this embodiment includes an adapter main body A and a remote controller R as shown in FIG.
[0020]
The adapter body A is provided with an engaging means C for engaging with the thumb-turn lock S and a driving means D for driving the engaging means C and the driving means D, as shown in FIG. Are provided, and these are covered with a cover case CC.
[0021]
As shown in FIG. 1, the bottom panel PB has a structure in which a battery case BC is provided on a panel provided with a locking portion a for screwing and a semicircular notch b.
[0022]
The upper and lower panel ends are bent toward the near side (in this figure) to form a screw hole d for fixing the sub-panel S and a screw hole e for fixing the cover case CC. The sub-panel PS and the cover case CC are respectively screwed.
[0023]
In FIG. 1, the semicircular cutout b is provided at the lower right of the bottom panel PB, and the size thereof is formed so as to match the outer periphery of the cylinder of the thumb turn lock S.
[0024]
The battery case BC has a box shape on the left side of the bottom panel PB, and is adapted to hold a dry battery.
[0025]
Further, in this embodiment, the bottom surface side (outside) of the bottom panel PB is a joint surface, and a double-sided tape T is attached to the joint surface as a locking means as shown in FIG. It has become.
[0026]
The sub-panel PS has a U-shape as shown in FIG. 1. A through-hole f is provided in a bent portion g of the U-shape, and the sub-panel PS is screwed to the locking portion a of the bottom panel PB. The engaging means C, the driving means D, the lock / unlock sensor switches SEa and SEb, and the control circuit B are mounted on a horizontal portion sandwiched between the bent portions g.
[0027]
The bent portion g is used not only for attachment to the bottom panel PB but also as a spacer for determining the height of the sub-panel PS. The dimensions are determined so that the engaging means C can be attached to the boss.
[0028]
As shown in FIGS. 3 (a) and 3 (b), the engaging means C is formed by attaching a shaft c2 to the center of a U-shaped engaging portion c1, and forming a U-shaped groove of the engaging portion c1. Is formed to have a width and a depth into which the knob L of the thumb lock S fits. At this time, if the engaging portion c1 is made of, for example, an elastic metal or resin and the width of the groove is made slightly smaller, the size of the knob L of the thumb turn lock S is slightly different. Also, press fitting is preferable because it can be firmly engaged.
[0029]
The shaft c2 of the engaging means C is connected to the driving means D. In this embodiment, the driving means D uses a small DC motor M. For example, the motor M is connected to the rotating shaft c2 of the engaging means C via a gear box G as shown in FIG. Have been. On the other hand, the motor M is connected to the control circuit B.
[0030]
Locking / unlocking sensor switches SEa and SEb are attached to the engagement means C. The locking / unlocking sensor switches SEa and SEb use two microswitches in this embodiment, and one microswitch SEa is arranged at the locking position of the knob L of the thumb lock S as shown in FIG. Then, the other microswitch SEb is arranged at the unlock position of the knob L, and its output is input to the control circuit B.
[0031]
The control circuit B includes, for example, as shown in FIG. 5, an infrared light receiving unit 10, a reception preparation signal generating unit 11, a timer unit 12, a counting unit 13, and a comparing unit 14.
[0032]
These circuits (excluding the infrared light receiving means 10) 11 to 14 include a one-shot retriggerable timer IC 15 connected to the infrared light receiving means 10, and a power supply and the circuits 11 to 14 by the output of the timer IC 15. The power management means 17 is connected to a relay circuit 16 to be connected. The power management means 17 is activated when the light receiving means 10 receives a signal from a remote controller R described later, and turns on the power for a predetermined time. Supply. This saves power and enables long-term battery drive.
[0033]
Here, the infrared light receiving means 10 uses an infrared phototransistor. However, the present invention is not limited to this. For example, another infrared sensor such as a pin photodiode may be used.
[0034]
In this case, the reception preparation signal generating means 11 is configured to generate a reset pulse having a width smaller than a transmission confirmation pulse of the remote controller R described later by a time constant circuit, and is constituted by a timer IC or the like. .
[0035]
Here, the timer means 12 uses a timer IC that outputs a pulse having a width set by the time constant circuit. The timer IC starts counting time when power is supplied and outputs “H”. . On the other hand, when the time is up, the output becomes “L”.
[0036]
In the case of this embodiment, the counting means 13 uses a binary counter (a 16-bit remote controller R is the same) having a reset (clear) input RS, an enable input EN, and a clock input CL. Then, the reset RS input of the binary counter is connected to the output of the reception preparation signal generating means 11 so that the count value can be cleared by a reset pulse from the reception preparation signal generation means 11. Also, the enable input EN of the counting means 13 is connected to the output of the timer means 12, and only when the output of the timer means 12 is "H" (the clear input CL has the priority "L" because the clear input CL has priority). (Afterwards) counting can be done. Further, by connecting the clock input CL of the counting means 13 and the light receiving means 10 via the Schmitt circuit 18, the reception pulses are counted.
[0037]
The comparing means 14 comprises a setting switch 14a and an AND circuit 14b, and connects the input of the pulled-up AND circuit 14b to the count output of the counting means 13 via the setting switch 14b, thereby setting the setting switch 14a. When turned off, the input of the AND circuit 14b becomes "H". When all the counter outputs connected to the setting switch 14a turned on become "H", the output of the AND circuit 14b becomes "H". Therefore, when the count number set by the setting switch 14a is reached, the AND circuit 14b Is "H", otherwise it is "L". Thereby, comparison with the set value can be performed. The output of the AND circuit 14b of the comparison means 14 is input to the three-state buffer 20a via the OR circuit 19.
[0038]
In this embodiment, in order to correspond to the locking pulse set by the remote controller R, the highest output of the counter of the counting means 13 is directly input to the OR circuit 19, and at the same time, the highest output is directly input to the three-state buffer 20b. I have.
[0039]
The three-state buffers 20a and 20b have three-state inputs connected to the IC output of the timer means 12, and the three-state buffers 20a and 20b are connected to the three-state buffers during the period when the IC output is "H", that is, during the counting and comparison periods. The outputs of 20a and 20b are kept at high impedance. Then, when the output of the timer means 12 becomes "L" after a predetermined counting period, the three-state input becomes "L", and the three-state buffers 20a and 20b output the result of comparison or the highest-ordered one counted. It is designed to output.
[0040]
In this way, by taking the output timing, an output determined during the counting is not output, thereby preventing a malfunction (gating).
[0041]
The outputs of the three-state buffers 20a and 20b are input to the drive IC 23 of the motor M via the lock / unlock sensor switches SEa and SEb, and the lock / unlock sensor switches SEa and SEb are connected to the thumb-turn lock S. When the knob L reaches the locked or unlocked position, the switch L is turned off, and the input to the drive IC 23 is shut off to stop.
[0042]
Incidentally, the reference numeral 22 in FIG. 5 is a changeover switch, which corresponds to the mounting position on the thumb-turn lock S (in FIG. 1, the adapter body A is mounted on the left side of the thumb-turn lock S, but is rotated 180 ° to the right side (It is possible to set the rotation direction of the motor M).
[0043]
The drive IC 23 uses, for example, an emitter follower bridge connection as shown in FIG. 5 in this embodiment, but also uses a single power supply such as a collector follower bridge connection (not shown). It is preferable to use one capable of reversible control (to support battery operation).
[0044]
The cover case CC has a box shape as shown in FIG. 1 and is large enough to cover the notch b of the bottom panel PB. A small light receiving window W is provided in front of the case CC. The infrared light receiving means 10 described in the control circuit B, here, the infrared phototransistor faces the window W. Further, a through-hole is provided in an upper part of the cover case CC, and a screw is inserted into the through-hole to be fixed to the screw hole e of the bottom panel PB.
[0045]
On the other hand, as shown in FIG. 1, the remote controller R includes an unlock switch 1a, a lock switch 1b, and a transmission window SD, and includes therein transmission confirmation pulse generation means 2, transmission pulse generation means 3, light emission Means 4 are provided.
[0046]
In this embodiment, the unlock switch 1a and the lock switch 1b each use a non-locking type push button switch in which two circuits are linked, and as shown in FIG. 6, one circuit is connected to a power supply (battery). Then, when one of the switches 1a and 1b is pressed, power is supplied to the circuit.
[0047]
In this embodiment, the transmission window SD is provided at the center of the remote controller R as shown in FIG. 1 so as to cover the light emitting means (infrared LED) 4 facing the window SD with a transparent resin. Has become.
[0048]
In this embodiment, the transmission confirmation pulse generating means 2 uses a timer circuit (initial signal generation timer) in which a capacitor and a resistor are connected in series, and outputs a timer output (reset output) to a signal mixing circuit (OR circuit) 5. A pulse having a predetermined width (refer to T1 in FIG. 9) can be output by inputting the signal to the drive transistor of the light emitting means 4 via the. Although a timer circuit using a CR is used here, the invention is not limited to this, and a counter, a shift register, or a microcomputer may be used.
[0049]
The transmission pulse generating means 3 includes an oscillation circuit 6, a counting circuit 7, a setting circuit 8, and a matching circuit 9.
[0050]
The oscillation circuit 6 uses a logic IC, and runs free when power is supplied. The output of the oscillating circuit 6 is directly input to the driving transistor of the light emitting means 4 via the OR circuit 5 and is also input to the counting circuit 7.
[0051]
The counting circuit 7 is formed by connecting binary counters in series, and each binary output of the counter is connected to one terminal of a switch of the setting circuit 8. As the switch of the setting circuit 8, for example, a dip switch may be used. The other terminal of the switch is pulled up and connected to the inputs of AND circuits 9a and 9b forming a matching circuit. Therefore, when each switch of the setting circuit 8 is turned off, the “H” level is input to the inputs of the AND circuits 9a and 9b.
[0052]
The output of the AND circuit 9b is connected to one of the inputs of the AND circuit 9a. Therefore, the output of the AND circuit 9a has the logical product output of the AND circuit 9b of "H" and the AND circuit 9a. Becomes "H" when all inputs are "H".
[0053]
That is, since the inputs of the AND circuits 9a and 9b whose switches are turned off become “H”, when all the counter outputs connected to the switches which are turned on become “H”, the outputs of the AND circuits 9a and 9b become “H”. Become. Therefore, by setting the switches of the setting circuits 8, the count number at which the AND circuit 9a outputs "H" can be freely determined. Since the output of the AND circuit 9a is connected to the unlock switch 1a, the output is output to the OR circuit 5 via the unlock switch 1a, and the output of the OR circuit 5 is kept at "H". Therefore, a set number of pulses can be output to the light emitting means 4 until the OR circuit 5 becomes “H”.
[0054]
At this time, the light emitting means 4 keeps the lighting state when the unlock switch 1a is kept pressed, and when released, shuts off the output to the OR circuit 5 and stops the supply of power to the circuit (power saving).
[0055]
On the other hand, when the lock switch 1b is pressed, the lock switch 1b is configured to connect the uppermost carry output of the binary counter of the counting circuit 7 to the OR circuit 5, so that the carry output is The pulse until the “H” level is output from the light emitting means 4. Similarly, in this case, when the lock switch 1b is continuously pressed, the light emitting means 4 keeps the lighting state, and when the lock switch 1b is released, the output to the OR circuit 5 is cut off, the power supply to the circuit is stopped, and the light emitting means 4 is turned off. Turn off the light.
[0056]
This configuration is configured as described above, and the adapter body A is provided with the sub-panel PS attached to the bottom panel PB and the case cover CC attached. Therefore, for example, the double-sided tape T of the bottom panel PB is put in an adhesive state (a state in which the release paper is peeled off), and the engaging portion (U-shaped) c1 of the engaging means C of the adapter body A is attached to the existing door. While being fitted to the lever L of the thumb turn lock, it is attached by pressing against the door (see FIGS. 3A and 3B).
[0057]
This completes the installation on the door. If necessary (to change the default value), the number of "key" pulses is set in advance by the setting means 14a, 8 of the adapter body A and the remote controller R. This setting can be easily made by anyone because it can be done with a switch, and it can be done easily anytime and any number of times, which is preferable in terms of security.
[0058]
Then, when actually using, the remote controller R is pointed at the adapter main body A. For example, when the user wants to unlock the locked door, he presses the unlock switch 1a. Then, the unlock switch 1a is turned on to supply power, and the timer circuit (the initial signal generation circuit in the figure) as the transmission confirmation pulse generation means 2 operates as shown in the signal flow shown in FIG. As shown in FIG. 9, a transmission confirmation pulse T1 having a predetermined width is output. Since this pulse T1 is input to the light emitting means 4 via the OR circuit (signal mixing circuit in FIG. 7) 5, it is output from the light emitting means 4 as it is. On the other hand, the transmission confirmation pulse T1 is input to the counting circuit 7 of the transmission pulse generating means 3, and resets the counting circuit 7. Therefore, when the transmission confirmation pulse T1 ends, the counting circuit 7 counts the pulses output from the oscillation circuit 6, and at this time, the outputs of the counting circuit 7 counted up by counting the pulses are output from the AND circuits 9a and 9b. Is compared with the value set by the setting switch 8 by the matching circuit 9 using. If the value does not match the set value, the count is continued. If the value matches, the output of the AND circuit 9a becomes "H", the output of the OR circuit 5 becomes "H" via the unlock switch 1a, and the light emitting means 4 is turned on. (If the unlock switch 1a is kept pressed, the lighting state is turned on. If released, the power supply B is cut off and the circuit is turned off.) During this time, the pulse oscillated by the oscillation circuit 6 is output to the OR circuit 5, and the light emitting means 4 is driven through the OR circuit 5 to transmit a predetermined number of pulse signals as shown in FIG. Can be.
[0059]
On the other hand, when the light receiving unit 10 receives the signal, the timer IC 15 of the power management unit 17 operates with the received signal as a trigger signal to supply power to the circuit, as shown in FIG. When the power is supplied, the timer IC of the reception preparation signal generating means 11 generates a pulse T2 narrower than the transmission confirmation signal T1 (see FIG. 9). As described above, by generating the pulse T2 having a width smaller than that of the transmission confirmation signal and resetting the counting means 13, a signal pulse received thereafter can be received. At the same time, the timer IC of the timer means 12 operates to output a pulse T3 having a predetermined width so that the counting means 13 can receive the pulse. For this reason, the counting means 13 counts the number of pulses received by the light receiving means 10 and amplified and shaped (Schmitt circuit). The count output is compared with the set value of the setting switch 14a by the AND circuit 14b of the comparing means 14 to determine whether or not the count output matches. When the count output matches, an "H" level is output from the AND circuit 14b. When the timer 12 times out, the three-state buffer 20a becomes valid at the pulse T4, and the output of the AND circuit 14b is input to the motor drive IC 23. At this time, if the count value matches the set value at the time of the time-up, the "H" level is output, so that the motor drive IC 23 operates the motor M to rotate the engagement means C. Can be unlocked. On the other hand, if the count value does not match the set value at the time of time-up, the output is at the “L” level, so that the motor drive IC 23 does not operate and maintains the locked state.
[0060]
When the user wants to lock the door, the remote controller R is pointed at the adapter body A and the lock switch 1b is pressed as in the case of the unlocking, and the lock switch 1b is turned on to supply power. As shown in FIG. 10, the transmission preparation signal T1 is output from the reception preparation signal generating means 12. This signal is input to the light emitting means 4 via the OR circuit 5 and output. Further, the counting circuit 7 is reset by the transmission confirmation signal T1. Then, the reset counting circuit 7 counts the pulses of the oscillation circuit 6 from the end of the transmission confirmation signal T1, and the output of the counting circuit 7 that has been counted up is compared with the set value by the matching circuit 9 using the AND circuit 9a. Be compared. Then, when the compared count value matches the set value, the output of the AND circuit 9a becomes "H" and the output of the OR circuit 5 causes the light emitting means 4 to be in the lighting state (when the locking switch 1a is kept pressed, the lighting state is released, and the light emitting means 4 is released). If the power is cut off, the circuit is turned off). During this time, the oscillating pulse of the oscillating circuit 6 is output to the OR circuit 5, and the light emitting means 4 is driven via the OR circuit 5 to transmit a predetermined number of pulse signals.
[0061]
On the other hand, in the adapter body A, as in the case of unlocking, when the light receiving means 10 receives a signal, the timer IC 15 of the power management means 17 operates to supply power to the circuit, and as shown in FIG. The timer IC of the preparation signal generating means 12 generates a pulse T2 which is narrower than the transmission confirmation signal T1. Therefore, when the timer IC of the timer means 12 operates and outputs a pulse T3 having a predetermined width, the counting means 13 starts counting the pulses received by the light receiving means 10. When the output of the counting means 13 counts up and the highest output becomes "H" level and the timer means 12 times out with the output, the outputs of the three-state buffers 20a and 20b become valid and the motor Since the input is input to the drive IC 23, the motor M operates to rotate the engaging means C, so that the locking can be performed. At this time, if the count value does not match the set value at the time of the time-up, the output becomes the “L” level, so that the motor drive IC 23 does not operate and maintains the unlocked state.
[0062]
The reason why the comparison means 14 is not used in the case of locking as described above is that, unlike the case of unlocking, even if a signal different from the set value is input, there is no security problem if locking is performed. This is because the cost of the setting circuit 14a can be reduced.
[0063]
In addition, in this way, with this adapter, it is possible to identify by the number of transmission pulses within a predetermined time. For example, if the frequency of the transmission pulse is changed, the set number of pulses within a predetermined period for counting the pulses can be freely set. can do. Therefore, it is possible to prepare a large number of set pulses serving as "keys", so that it is not easy to find out the "keys", and a strong security can be constructed.
[0064]
At this time, since a period from T2 to T4 is required from the reception of the signal to the driving of the motor, a new signal is not accepted during this period. Therefore, even if an attempt is made to continually oscillate an illegal signal and match the number of pulses, a period of T2 to T4 is required for one trial, and it takes too much time to make such an attempt. And the analysis of unlock pulses are difficult.
[0065]
By the way, a large number of set pulses serving as keys can be prepared in this way, and if this key is used, it can be used for identification.
[0066]
Thus, the electric lock can be easily realized only by attaching the adapter body A to the door with one touch and engaging the engaging means C with the knob L of the thumb-turn lock S.
[0067]
At this time, the adapter body A only needs to be attached to the door without replacing the thumb-turn lock S, so that a low-cost electric lock can be realized.
[0068]
Further, since the adapter body A is simply attached to the door (the lock is not replaced), it is possible to easily return to the state before the attachment.
[0069]
Next, as a second embodiment, FIG. 11 shows an adapter body A attached to a door via an attachment frame FA.
[0070]
That is, as shown in FIG. 11, an attachment frame FA is attached to a door, and the adapter body A is attached to the frame FA. In this embodiment, a projection PP for locking is provided on the bottom panel PB of the adapter body A, and a hole H that engages with the projection PP, for example, as shown in FIG.
[0071]
Further, here, the mounting frame FA is provided with the double-sided tape T on the joining surface, but it is also possible to provide a through-hole H so that the mounting frame FA can be screwed.
[0072]
By doing so, attachment and detachment of the adapter body A to and from the door surface can be extremely easily performed. Also, if the mounting frame FA is properly positioned with respect to the thumb-turn lock S and is mounted on the door, simply by mounting the adapter main body A on the frame FA, the engaging means C of the adapter main body A is connected to the knob L of the thumb-turn lock S. Since they can be engaged, mounting errors can be prevented as compared with the first embodiment.
[0073]
Thus, an electric lock can be easily realized. In addition, it is possible to easily return to a state close to the state before mounting (even in the case of screwing, only a small screw hole is provided).
[0074]
In this embodiment, a remote control is used. However, the present invention is not limited to this, and a lock / unlock switch may be directly provided on the electric lock adapter without using the remote control.
[0075]
In this embodiment, the remote control uses infrared light. However, the present invention is not limited to this. For example, any remote control such as wireless or ultrasonic may be used. May be used.
[0076]
Further, in this embodiment, the motor using the driving means is shown, but the present invention is not limited to this. For example, a device using an electromagnetic solenoid may be used, and any other device may be used as long as the thumb-turn knob can be moved.
[0077]
[Effect of the invention]
According to the present invention, an electric lock system which can be easily restored to a state before being attached at a low cost can be realized with the above-described structure.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a first embodiment.
FIG. 2 is an exploded perspective view of a main part of FIG. 1;
FIG. 3A is a sectional view of FIG.
(B) IIb-IIb sectional view of (a)
FIG. 4 is a sectional view taken along line III-III in FIG.
FIG. 5 is a circuit diagram of the first embodiment.
FIG. 6 is a circuit diagram of the first embodiment.
FIG. 7 is a signal flow chart of the first embodiment.
FIG. 8 is a signal flow chart of the first embodiment.
FIG. 9 is a time chart of the first embodiment.
FIG. 10 is a time chart of the first embodiment.
FIG. 11 is an operation diagram of the second embodiment.
FIG. 12 is a sectional view of a main part of the second embodiment.
[Explanation of symbols]
A Adapter body
B control circuit
C engaging means
D drive means
L Samturn knob
T double-sided tape
M motor
S Samtern Tablet
FA mounting frame
PP protrusion

Claims (6)

An engagement means having a U-shape that fits into a knob portion of a thumb-turn lock provided on a door, and a driving means for turning the engagement means in an unlocking direction or a locking direction are provided. An electric lock adapter for locking and unlocking by rotating the engagement means based on a lock signal. An electric lock adapter, wherein the electric lock adapter includes an adapter body having an engaging means and a driving means, and a remote controller for transmitting a locking / unlocking signal to the adapter body. The electric lock adapter according to claim 1 or 2, wherein the adapter body is detachably attached to the door by locking means. The electronic lock adapter according to claim 3, wherein the locking means is a double-sided tape. 4. The electric lock according to claim 3, wherein said locking means is provided with a mounting frame mounted on a door surface and a projection engaging with said frame on said adapter main body so that said adapter main body can be detachably mounted on said door. Adapter. The remote control has an infrared transmitting means, and after transmitting a confirmation pulse of a predetermined width on the remote control side, transmits a predetermined number of pulses as a locking / unlocking signal within a predetermined time,
On the other hand, the adapter body is provided with infrared receiving means, and upon receiving a confirmation pulse, counting of received pulses is started, and a locking / unlocking signal is decoded based on the number of received pulses, and locking and unlocking are performed. The electric lock adapter according to claim 2.

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