JP2006233532A - Locking mechanism for fitting - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly safe locking mechanism for fittings capable of appropriately adopting to the situation that a power supply voltage is reduced to such a degree as not to make a driving mechanism operate. <P>SOLUTION: The locking mechanism for fittings comprises a substrate to be mounted to a fitting; a position adjustment means capable of adjusting the distance from the substrate; and a lock main body in which a freely retractable bolt piece 41 is built. The bolt piece 41 is drawn forth and back by the operation of a remote control 7. The lock main body comprises a drive part 42 for actuating the bolt piece 41; a power supply part 43 for supply electric power for the drive part 42; a reception part 44 for receiving radio waves (b) of the remote control 7; a sensing part 45 for sensing a reduction in the electric power (a) supplied for the drive part 42 less than a reference value; and a control part 46 for controlling the drive part 42 in such a way as to execute a locking movement and an unlocking movement and execute not the locking movement but only the unlocking movement in the case that the sensing part 45 has sensed the reduction. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a lock mechanism for joinery provided in a joinery that opens and closes such as a door.

Registered Utility Model No. 3090118 JP 2002-256745 A

  Conventionally, a cylinder lock has been widely used as a means for locking a door of a house or the like. This is to move the tumbler, which is a small rod-shaped body, which is coordinated inside the keyhole, by inserting a key with irregularities in the keyhole, so that it can be unlocked. .

  However, this cylinder lock may be unlocked by inserting a wire etc. into the key hole, and it may be unlocked in the same state as when the correct key is inserted. Those who were knowledgeable about unlocking the lock, sometimes suffered damage such as theft by so-called “picking” offenders, and were worried.

In addition, for the purpose of crime prevention, there are cases where a plurality of locks are attached to one door. However, when the lock is a cylinder lock, the effect can be expected because it is easily unlocked as described above. There wasn't.
In addition, as a countermeasure for the above, a method of replacing the conventional door lock with a lock other than a cylinder lock such as an electronic lock by entering a number is conceivable. However, since the shape of each lock mechanism does not match, only the lock is used. It was almost impossible to replace it, and it was necessary to replace the door and its fixed frame. For this reason, the construction was large and the cost was a bottleneck, making it difficult to respond.

  Here, the applicant of the present application has devised a lock mechanism described in Patent Document 1 as a solution to the above-described problems. This is a locking mechanism that can be attached to the interior side of doors and other fixtures and that can be moved in and out by remote control.There is no locking mechanism on the outdoor side, and it is unlocked by unauthorized means from the outdoor side. It has a high level of safety.

  However, in the locking mechanism according to the above-described device, the power supply voltage for operating the rod is automatically unlocked before it drops to such an extent that the driving mechanism cannot be operated.

  Further, the mechanism that is automatically unlocked as the power supply voltage is reduced is also provided in the “remote control auxiliary lock” according to the invention described in Patent Document 2. In the unlocking mechanism in the invention, first, the voltage detection means detects the lowered voltage and outputs it to the microcomputer. When the microcomputer detects the position of the collar piece by the sensor switch and detects that the position of the collar piece is in the locked state, the microcomputer operates the actuator by the driving means until the sensor switch detects the open state. The piece is moved to an unlocked state.

  Therefore, when the door is automatically unlocked while going out, the door is locked only with the cylinder lock provided from the beginning. As it was targeted, there was a possibility of unfortunate encounters such as theft, leaving room for further improvements in crime prevention.

  The present invention has been made in view of the above problems, and can appropriately cope with a situation in which the power supply voltage drops to such an extent that the drive mechanism cannot be operated, such as battery exhaustion, and is more secure in terms of crime prevention. It is an object to provide a high lock mechanism for joinery.

  In order to solve the above-mentioned problem, the invention according to claim 1 of the present application is directed to a lock mechanism for a fitting that is attached to a fitting 5 that is movably arranged with respect to a fixed frame 6 that is attached to a building or the like. 1, the lock mechanism for joinery 1 includes a substrate 2 attached to the joinery 5, a position adjusting unit 3 provided on the substrate 2 and capable of adjusting a distance from the substrate 2, and a position adjusting unit 3. And a lock body 4 with a retractable collar 41 built in, and the collar 41 is projected and retracted by the operation of the remote controller 7. Drive unit 42 for operating the collar piece 41, a power source unit 43 for supplying power to the drive unit 42, a receiving unit 44 for receiving the radio wave b emitted by the operation of the remote controller 7, and driving from the power source unit 43 The power supplied to the unit 42 is A sensing unit 45 that senses that the value has fallen below the value, a locking operation in which the hook 41 protrudes from the lock body 4, and an unlocking action in which the hook 41 is inserted into the lock body 4. As described above, the driving unit 42 is controlled, and when the sensing unit 45 performs the above-described sensing, it has a control unit 46 that does not perform the locking operation and performs only the unlocking operation. A lock mechanism for joinery is provided.

  In addition, the invention according to claim 2 of the present application is for the joinery lock mechanism 1 attached to the joinery 5 movably arranged with respect to the fixed frame 6 attached to the building or the like. The lock mechanism 1 is attached to the base plate 2 attached to the fitting 5, the position adjusting means 3 provided on the base plate 2 and capable of adjusting the distance from the base plate 2, and attached to the position adjusting means 3. And a lock body 4 with a built-in lock piece 41. The lock piece 41 is moved in and out by the operation of the remote controller 7, and the lock body 4 is operated by the lock piece 41. A drive unit 42 for supplying power, a power supply unit 43 for supplying power to the drive unit 42, a receiving unit 44 for receiving a radio wave b emitted by an operation of the remote controller 7, and a power supply unit 43 for supplying to the drive unit 42. From voltage or current, power supply 43 Elapsed time after the voltage or current supplied to the moving unit 42 falls below a preset value, and after the voltage or current supplied from the power supply unit 43 to the driving unit 42 falls below a preset value A sensing unit 45 that senses at least one of the total number of appearances of the tab 41, a locking operation in which the tab 41 protrudes from the lock body 4, and an operation in which the tab 41 enters the lock body 4. The control unit 46 controls the drive unit 42 so as to perform the unlocking operation, and only performs the unlocking operation without performing the locking operation when the sensing unit 45 performs the above-described sensing. A lock mechanism for joinery is provided.

  In addition, the invention according to claim 3 of the present application is such that, in the lock mechanism 1 for a joiner attached to a joiner 5 that is movably arranged with respect to a fixed frame 6 attached to a building or the like, The lock mechanism 1 is attached to the base plate 2 attached to the fitting 5, the position adjusting means 3 provided on the base plate 2 and capable of adjusting the distance from the base plate 2, and attached to the position adjusting means 3. And a lock body 4 with a built-in lock piece 41. The lock piece 41 is moved in and out by the operation of the remote controller 7, and the lock body 4 is operated by the lock piece 41. Drive unit 42, power supply unit 43 for supplying power to drive unit 42, receiver unit 44 for receiving radio wave b emitted by operation of remote controller 7, and sensing twice, the first of which Is supplied from the power supply unit 43 to the drive unit 42 The voltage or current to be supplied from the power supply unit 43 to the drive unit 42 is set in advance after the first detection is performed. The detection unit 45 for detecting that the measured value is less than the detected value, the elapsed time since the first detection, or the total number of appearances of the hook 41 from the first detection, and the hook 41 from the lock body 4 The drive unit 42 is controlled so as to perform a locking operation that is a protruding operation and an unlocking operation that is an operation in which the collar piece 41 is immersed in the lock body 4, and the second sensing is performed. And a control unit 46 that does not perform the locking operation and performs only the unlocking operation.

  Further, the invention according to claim 4 of the present application provides the lock mechanism for joinery according to claim 3, further comprising warning means 47 that issues a warning when the first detection is made. To do.

  According to the first aspect of the present invention, when the power supplied from the power supply unit 43 to the drive unit 42 is lower than the reference value, the control unit 46 causes the drive unit 42 to perform a locking operation. First, by performing only the unlocking operation, the user cannot be locked before the power supply voltage drops to such an extent that the drive mechanism cannot be operated, such as battery exhaustion, and the user can be prompted to replace the battery. Therefore, after locking and going out, there is no such thing as being automatically unlocked due to voltage drop, so it was possible to provide a safer locking mechanism for joinery in terms of crime prevention. is there.

  In the invention according to claim 2 of the present application, the voltage or current supplied from the power supply unit 43 to the drive unit 42 or the voltage or current supplied from the power supply unit 43 to the drive unit 42 is detected in advance by the sensing unit 45. At least one of the elapsed time since falling below the set value and the cumulative number of appearances of the piece 41 since the voltage or current supplied from the power supply unit 43 to the drive unit 42 falls below a preset value. By sensing one of them, the control unit 46 does not perform the locking operation on the driving unit 42, but only performs the unlocking operation, so that the power supply voltage is lowered to the extent that the driving mechanism cannot be operated, such as battery exhaustion. It is possible to urge the user to replace the battery by disabling the lock before it ends. Therefore, after locking and going out, there is no such thing as being automatically unlocked due to voltage drop, so it was possible to provide a safer locking mechanism for joinery in terms of crime prevention. is there.

  In the invention according to claim 3 of the present application, the voltage or current supplied from the power supply unit 43 to the drive unit 42 at a first time out of the two detections by the detection unit 45 has a preset value. By detecting that it has fallen below, the control unit 46 does not perform the locking operation on the driving unit 42 and only performs the unlocking operation on the second detection, so that the user can perform an earlier operation. It has been possible to provide a lock mechanism for joinery that can promote battery replacement.

  In addition to the effect of the invention according to claim 3, the invention according to claim 4 of the present application has a warning means 47 that issues a warning when the first detection is made, so It is possible to provide a lock mechanism for joinery that can clearly notify the time of battery replacement.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing the lock mechanism for joinery of this example, and FIGS. 2 and 3 are explanatory views showing a state in which the lock mechanism for joinery of this example is attached to a door. FIG. 4 is an explanatory diagram regarding control of the lock mechanism for joinery of this example.

As shown in FIGS. 2 and 3, the lock mechanism 1 for joinery of this example is used by being attached to a door 5 that constitutes a hinged door together with a fixed frame 6.
As shown in FIG. 1, the lock mechanism 1 includes a substrate 2, a position adjusting unit 3, and a lock body 4.

The substrate 2 is a metal plate such as a flat steel plate or an aluminum alloy plate having a thickness that does not cause distortion. The shape of the substrate 2 in this example is substantially rectangular in plan view.
An adhesive tape is attached to one surface of the substrate 2, and is adhered to the indoor surface of the door 5 with this adhesive tape. For the adhesive tape, use a double-sided tape with sufficient adhesive strength. Thereby, the door 5 does not need to be subjected to special construction such as drilling or bolting. Therefore, the mounting operation is extremely simple, and the door 5 is not damaged, so that it can be securely mounted on the door of a rental house such as a rental apartment.
Although the mounting work is simple as described above, the adhesive tape does not cause the adhesive state between the substrate 2 and the door 5 to be detached by a force of about normal human power, except when a power machine is used. And can. Therefore, the crime prevention effect is sufficiently exhibited while being simple.

A position adjusting means 3 is provided on the other surface of the substrate 2. In this example, the position adjusting means 3 includes a planting bolt 31 and a plurality of nuts 32 a and 32 b screwed into the planting bolt 31. The position adjusting means 3 of the present invention is not limited to the above form, and can be implemented in various forms as long as the distance between the substrate 2 and the lock body 4 can be adjusted. .
The implantation bolts 31 are attached to the four corners of the substrate 2 so as to stand perpendicularly to the surface of the substrate 2 and are long and have screws formed on the entire side surface. The nuts 32a and 32b are implanted. A set of nuts 32a for fixing the bolts 31 to the substrate 2 and a set arranged so as to sandwich the mounting portion 43 of the lock body 4 as shown in FIG. 3 in order to adjust the position of the lock body 4. It consists of an adjustment nut 32b.

  The lock body 4 is box-shaped, and a collar piece 41 is provided therein. The hook 41 can be moved upward and downward of the lock body 4 by the following drive mechanism provided together with the hook 41 on the lock body 4. As a result, a locking operation in which the collar piece 41 protrudes from the lock body 4 and an unlocking operation in which the collar piece 41 is immersed in the lock body 4 are performed. When the flange 41 protrudes from the lock body 4, it comes into contact with the fixed frame 6 of the hinged door. What was bent in the shape of a letter is used.

As shown in FIG. 1, the lock body 4 has a plate-like attachment portion 43 protruding in the left-right direction. The above-mentioned implantation bolt 31 penetrates the mounting portion 43, and the lock body 4 can be moved to a free position within the range of the length of the implantation bolt 31 by adjusting the distance of each adjustment nut 32b to the substrate 2. It is possible to coordinate.
Accordingly, the lock mechanism 1 is attached so that the distance between the indoor side surface of the door 5 and the indoor side surface of the fixed frame 6 and the distance between the indoor side surface of the door 5 and the flange 41 are matched. It can be attached to the door 5 having various forms.
In the lock mechanism 1 of this example, since the position adjustment is possible so that the collar piece 41 directly contacts the fixed frame 6, there is no need for a receiving metal fitting for receiving the collar piece 41 as in the prior art. No work is required for the frame 6 as well. Therefore, it can be safely attached to the doors of rental houses such as rental apartments.

  Since the locking mechanism 1 is configured and attached as described above, the locking mechanism 1 never appears outside the door 5. Therefore, it is not unlocked by unauthorized means by a so-called “picking” offender, and has high safety.

  In this example, the case where the lock mechanism 1 is attached to the door 5 of the hinged door has been described. However, the object to be attached is not limited to this, and the door of a storage box such as a sliding door, a window, a shutter, or a safe. Can also be attached to a wide range of applications.

  Here, as a drive mechanism for moving the collar piece 41 in and out, a drive unit 42, a power supply unit 43, a reception unit 44, and a control unit 46 are provided (see FIG. 4).

The drive unit 42 includes a motor as a power source and a gear as power transmission means. The gear is attached to the rotating shaft of the motor. On the other hand, the pinion piece 41 is provided with a pinion that meshes with the gear of the drive unit 42, and the rotation of the motor is reliably transmitted to the pinion piece 41 through the gear and the pinion. The motor is rotated in both directions by the control unit 46 described below. When the motor is rotated in one direction, the collar piece 41 projects from the lock body 4 and is rotated in the opposite direction. Operates to immerse the collar piece 41 into the lock body 4.
In addition to the motor of this example, an electromagnet that directly moves the rod piece 41 without using a power transmission unit such as a gear or a pinion may be used as the power source. In addition to the gear of this example, a chain or a link mechanism may be used as the power transmission means. Moreover, it is good also as what provided the clutch which can cut | disconnect motive power in the middle, and can change and implement the structure of the drive part 42 in various ways.

  The power supply unit 43 supplies power a for driving the motor of the drive unit 42. In this example, electric power (direct current) having a voltage of 3 V in which two dry batteries are connected in series is supplied to the drive unit 42. In this example, the dry battery is built in the lock body 4. However, in some cases, the electric power a may be supplied from the outside of the lock mechanism 1. In this case, the power supply unit 43 provided in the lock body 4 is only a transformer. Further, when the already transformed electric power a is supplied, the power source 43 itself may not be provided in the lock body 4.

  The receiving unit 44 receives the radio wave b. A received signal c corresponding to the radio wave b can be sent to the control unit 46 described later. In this example, the antenna is provided to protrude from the lower surface of the lock body 4. The radio wave b is emitted from a remote controller 7 (see FIG. 2) that is separate from the lock body 4. The remote controller 7 is provided with operation buttons for locking and unlocking, and a weak radio wave b corresponding to each operation is transmitted when the buttons are operated. The radio wave b exchanged between the remote controller 7 and the lock body 4 is set in a unique pattern for each lock mechanism 1 at the time of manufacture, so that there is little possibility that others will forge. There is nothing.

A sensing unit 45 is provided on the lock body 4 so that troubles due to running out of batteries do not occur. The sensing unit 45 senses in advance that the voltage or current of the electric power a supplied from the power supply unit 43 to the driving unit 42 is lower than a certain value, making it difficult to operate the driving unit 42 correctly. A notification f is sent to the control unit 46 described later.
The sensing unit 45 in this example performs sensing twice. For the first time, it is detected that the electric power a supplied from the power supply unit 43 to the driving unit 42, specifically, the voltage or current falls below a preset reference value. In this example, voltage is sensed, and the value is set to 2.3V.
The second time senses that the voltage or current of the electric power a supplied from the power supply unit 43 to the drive unit 42 has fallen below a preset value after the first sensing. The value sensed here is a value lower than the first time. In this example, the voltage is sensed, and the value is set to 2.1V.
As for the second detection, in addition to detecting the voltage as in this example, the elapsed time from the first detection may be measured by a timer to detect that a certain time has passed. Further, it is to detect that the cumulative number of appearances of the piece 41 since the first detection exceeds a certain value (for example, 50 times) by measuring the coefficient by the counter or the voltage change during the operation of the piece 41. There may be.

  The control unit 46 receives the reception signal c related to locking and unlocking from the receiving unit 44 as described above, and sends the control signal d for operating the motor to the driving unit 42. Conversely, a state signal e indicating whether the drive unit 42 is in the locked state or the unlocked state is sent from the drive unit 42 to the control unit 46. In addition, when a voltage drop of the power supply unit 43 is detected by the following detection unit 45 (the first detection described below), the control unit 46 causes the following LED indicator lamp 47 to blink. When the sensing unit 45 senses a further voltage drop of the power supply unit 43 (second sensing described below), the control unit 46 operates the motor of the driving unit 42 only in the unlocking direction, and the locking direction. Don't let it work.

In addition to the above, the lock body 4 in this example is provided with an LED indicator lamp 47, a manual operation lever 48, and a buzzer (not shown).
The LED indicator lamp 47 is assumed to continue to flash until the second sensing is performed after the first sensing is performed. As a result, the user of the lock mechanism 1 is notified to the power supply unit 43. Can clearly notify that the voltage or current supplied to the drive unit 42 has fallen below a certain value, and can prompt battery replacement. Also, when receiving radio waves from the remote controller 7 at the time of locking and unlocking, it blinks to confirm the operation.
The manual operation lever 48 can forcibly operate the collar piece 41 by manual operation from the indoor side.
The buzzer emits a sound such as a beep when locking or unlocking, and can notify the person who has operated through the door that the locking and unlocking operations have been performed reliably. It can be done.

Here, the operation of the lock mechanism 4 of the present example accompanying the sensing of the sensing unit 45 will be summarized.
First, when the voltage of the power supply unit 43 exceeds 2.3V (the initial value of the voltage is 3V), the sensing unit 45 performs no sensing, and the locking and unlocking operations are performed by operating the remote controller 7. The
Next, when the sensing unit 45 senses that the voltage of the power supply unit 43 has decreased to 2.3 V (first sensing), the sensing unit 45 notifies the control unit 46 of this. Then, the control unit 46 causes the LED indicator lamp 47 to blink. This is a second detection described later, and the control unit 46 prompts the user to replace the battery earlier before the drive unit 42 does not perform the locking operation but only performs the unlocking operation. It is. At this point, the locking and unlocking operations can be continued.

Next, when the sensing unit 45 senses that the voltage of the power supply unit 43 has decreased to 2.1 V (second sensing), the sensing unit 45 notifies the control unit 46 of this. Then, the control unit 46 turns off the LED indicator lamp 47. At the same time, the control unit 46 operates the motor of the drive unit 42 only in the unlocking direction and does not operate in the locking direction. This is different from the unlocking mechanism in the invention described in Patent Document 2 above, regardless of the position of the collar 41, and the position sensing of the collar 41 for this purpose is not particularly required. The mechanism can be simplified.
Therefore, at this point, the user cannot lock the lock mechanism 41 unless the battery is replaced. This unlocking operation can be performed up to a voltage of 1.8 V, but if the voltage drops below that, the drive unit 42 does not operate at all. At this time, in order to save power, the LED indicator lamp 47 is not turned on and the buzzer is not operated at the time of unlocking.
As described above, since the voltage supplied from the power supply unit 43 cannot be locked before the drive unit 42 can be operated, the locking cannot be performed. The battery will not run out in the state. In addition, as before, while being locked and going out, it is automatically unlocked due to voltage drop, and at that time, it happens to be targeted by a `` picking '' offender and unfortunately encounter damage such as theft Without any problem, it can be made safer in terms of crime prevention.

It is a perspective view which shows the locking mechanism for joinery which is an example of embodiment of this invention device. It is a perspective view which shows the state which attached the locking mechanism for joinery to the door. It is explanatory drawing of the side view which shows the state which attached the lock mechanism for the fittings to the door. It is explanatory drawing regarding control of the lock mechanism for joinery of this example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Locking mechanism for fittings 2 Board | substrate 3 Position adjustment means 4 Locking body 41 Key piece 42 Drive part 43 Power supply part 44 Reception part 45 Sensing part 46 Control part 47 Warning means, LED indicator light 5 Fixture, door 6 Fixed frame 7 Remote control b Radio wave

Claims (4)

In the lock mechanism (1) for fittings attached to the fitting (5) arranged so as to be movable with respect to the fixed frame (6) attached to the building or the like,
This lock mechanism for joinery (1)
A substrate (2) attached to the joinery (5);
A position adjusting means (3) provided on the substrate (2) and capable of adjusting a distance from the substrate (2);
A lock body (4) which is attached to the position adjusting means (3) and has a retractable hook piece (41) built therein;
The lug piece (41) is moved in and out by the operation of the remote control (7).
The lock body (4) includes a drive unit (42) for operating the hook piece (41),
A power supply unit (43) for supplying power to the drive unit (42);
A receiver (44) for receiving radio waves (b) emitted by operating the remote control (7);
A sensing unit (45) for sensing that the power supplied from the power source unit (43) to the driving unit (42) is lower than a reference value;
The drive part (41) is operated so that the locking piece (41) protrudes from the lock body (4) and the unlocking action (moving the hook piece (41) into the lock body (4)). 42), and when the sensing unit (45) performs the above-described sensing, the control unit (46) does not perform the locking operation but only performs the unlocking operation. Joinery lock mechanism. In the lock mechanism (1) for fittings attached to the fitting (5) arranged so as to be movable with respect to the fixed frame (6) attached to the building or the like,
This lock mechanism for joinery (1)
A substrate (2) attached to the joinery (5);
A position adjusting means (3) provided on the substrate (2) and capable of adjusting a distance from the substrate (2);
A lock body (4) which is attached to the position adjusting means (3) and has a retractable hook piece (41) built therein;
The lug piece (41) is moved in and out by the operation of the remote control (7).
The lock body (4) includes a drive unit (42) for operating the hook piece (41),
A power supply unit (43) for supplying power to the drive unit (42);
A receiver (44) for receiving radio waves (b) emitted by operating the remote control (7);
Voltage or current supplied from the power supply unit (43) to the drive unit (42),
Elapsed time after the voltage or current supplied from the power supply unit (43) to the drive unit (42) falls below a preset value,
The cumulative number of appearances of the strip (41) after the voltage or current supplied from the power supply unit (43) to the drive unit (42) falls below a preset value,
A sensing unit (45) for sensing at least one of
The drive part (41) is operated so that the locking piece (41) protrudes from the lock body (4) and the unlocking action (moving the hook piece (41) into the lock body (4)). 42), and when the sensing unit (45) performs the above-described sensing, the control unit (46) does not perform the locking operation but only performs the unlocking operation. Locking mechanism for joinery. In the lock mechanism (1) for fittings attached to the fitting (5) arranged so as to be movable with respect to the fixed frame (6) attached to the building or the like,
This lock mechanism for joinery (1)
A substrate (2) attached to the joinery (5);
A position adjusting means (3) provided on the substrate (2) and capable of adjusting a distance from the substrate (2);
A lock body (4) which is attached to the position adjusting means (3) and has a retractable hook piece (41) built therein;
The lug piece (41) is moved in and out by the operation of the remote control (7).
The lock body (4) includes a drive unit (42) for operating the hook piece (41),
A power supply unit (43) for supplying power to the drive unit (42);
A receiver (44) for receiving radio waves (b) emitted by operating the remote controller (7);
Two detections are performed, the first of which is
Detecting that the voltage or current supplied from the power supply unit (43) to the drive unit (42) is lower than a preset value,
The second time, after the first sense is made,
The voltage or current supplied from the power supply unit (43) to the drive unit (42) is lower than a preset value;
Or
Elapsed time since the first detection,
Or
A sensing unit (45) for sensing the cumulative number of appearances of the piece (41) from the first sensing;
The drive part (41) is operated so that the locking piece (41) protrudes from the lock body (4) and the unlocking action (moving the hook piece (41) into the lock body (4)). 42), and has a control unit (46) that does not perform the locking operation and performs only the unlocking operation when the second sensing is performed, and the lock for joinery is characterized in that mechanism.   The lock mechanism for joinery according to claim 3, further comprising warning means (47) for issuing a warning when the first sensing is performed.

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