JP2008267056A - Electric lock for building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric lock for a building capable of restraining an impulsive sound generated by a driving member in locking and unlocking. <P>SOLUTION: This electric lock for the building has a dead bolt 11 for locking and unlocking by being displaced between a locking position engaged with a recessed part arranged in the building and an unlocking position for releasing engagement, and a motor 12a for driving the dead bolt 11. The electric lock for the building has a driving control device 13 for performing duty control on the motor 12a, and a detecting sensor 14 for detecting that the dead bolt 11 is respectively positioned in the locking position and the unlocking position. The driving control device 13 sets the duty ratio larger than an ordinary value, when the detecting sensor 14 does not detect that the dead bolt 11 is positioned in the locking position by being displaced from the unlocking position in locking operation or that the dead bolt 11 is positioned in the unlocking position by being displaced from the locking position in unlocking operation. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a building electric lock.

  In recent years, the doors of buildings such as houses are not cylinder locks that are locked and unlocked by inserting and turning mechanical keys into the keyholes of the doors. Recently, devices that can be locked and unlocked by wireless communication between a portable device and a communication device provided on the building side have become widespread. In this type of building electric lock, an electric thumb turn is used for the appearance of a dead bolt provided on the door. If the ID code contained in the signal transmitted from the portable device is collated and matches the code registered on the building side, the electric thumb turn causes the dead bolt to appear and disappear by its own motor. As a result, the locking / unlocking is switched when the dead bolt engages or disengages with the engaging portion provided on the door frame of the building (see, for example, Patent Document 1).

Such a building electric lock motor is used as much as possible to securely engage the dead bolt with the engaging part of the building so that it can be locked and unlocked even under slightly poor installation or wind pressure. It is driven with a large current. The motor at this time is switched between driving and non-driving.
JP 2003-120092 A

  In apartment buildings using the above-mentioned electric locks for buildings, when a dead bolt engages or disengages from an engaging part of a building, a large impact sound may be generated, and the neighbor may be notified of entering and exiting the house. There is. For this reason, suppression of impact noise is desired. In particular, as a crime prevention measure, a device provided with two electric locks generates an impact sound twice and generates a louder sound.

Thus, it is conceivable to provide an impact absorbing material such as a sponge around the engaging portion of the building and its surroundings, but there are problems in terms of low durability and deterioration over time.
Such a reduction in impact sound is not limited to dead bolts, but is similarly desired in building electric locks using engaging members such as sickle locks.

  This invention is made | formed in view of such a situation, The objective is to provide the electric lock for buildings which can suppress the impact sound which an engagement member generate | occur | produces at the time of locking / unlocking.

Hereinafter, means for achieving the above-described object and its operation and effects will be described.
The invention according to claim 1 is the same as the engaging member that performs locking and unlocking by displacing between the locking position engaged with the recess provided in the building and the unlocking position released from the engagement. In a building electric lock including an electric actuator for driving an engagement member, a drive control device that performs duty control on the electric actuator, and the engagement member is positioned at each of a locked position and an unlocked position. Detecting means for detecting the position, and the engaging member is displaced from the unlocking position during the locking operation and positioned at the locking position, or the engaging member is displaced from the locking position during the unlocking operation. When the detection means does not detect that the position is in the position, the gist is to make the duty ratio larger than the normal value.

  In the conventional electric lock for buildings, the current is as large as possible so that the engaging member can be securely engaged with the engaging part of the building so that the locking and unlocking can be reliably performed even in a slightly poor state of installation or under the wind pressure. Because of this, it was driven with a large amount of impact noise than necessary when locking and unlocking.

  According to the above configuration, the engaging member is displaced from the unlocking position and positioned at the locking position during the locking operation, or the engaging member is displaced from the locking position and positioned at the unlocking position during the unlocking operation. If not detected, the torque of the electric actuator is increased by setting the duty ratio for the electric actuator larger than the normal value, assuming that the engaging member cannot be displaced to the locked position or the unlocked position for some reason. The engagement member can be displaced to the locked position or the unlocked position by increasing. In this way, when the torque of the electric actuator is required, the torque of the electric actuator is increased from the normal value, and the torque of the electric actuator is normally suppressed to a normal value, so that the torque is always made as large as possible. In comparison, the impact sound generated by the engaging member at the time of locking and unlocking can be suppressed.

  According to a second aspect of the present invention, in the electric lock for building according to the first aspect, the detection means can further detect a midway displacement between the locked position and the unlocked position of the engagement member, The gist of the control device is to reduce the duty ratio when the detection means detects that a predetermined position between the locking position as the stop position and the unlocking position has been reached.

  According to this configuration, the displacement between the locking position and the unlocking position of the engaging member is detected, and the drive control device detects between the locking position that is the stop position by the detecting means and the unlocking position. By reducing the duty ratio when it is detected that the predetermined position has been reached, the displacement of the engaging member can be controlled more reliably. Thereby, the impact sound generated by the engaging member at the time of locking / unlocking can be further suppressed.

  ADVANTAGE OF THE INVENTION According to this invention, in the electric lock for buildings, the impact sound generated by the engaging member at the time of locking / unlocking can be suppressed.

DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment in which a building electric lock according to the present invention is embodied in a residential electric lock system will be described with reference to FIGS.
As shown in FIGS. 1A and 1B, the electric lock system is provided on the electric lock 1, the control device 2, the indoor antenna 3, the outdoor antenna 4, and the indoor side of the building provided on the door 8 of the house. The operation panel 7 is provided. The electric lock system then locks and unlocks the door 8 through wireless communication with the portable device 20 possessed by the user of the house.

  On the indoor side of the door 8, a request signal is intermittently output to a predetermined area A1 in the vicinity of the door 8 indicated by a one-dot chain line in FIG. 1A, and transmitted from the portable device 20 in response to the request signal. An indoor antenna 3 for receiving an ID code signal including an ID code, an indoor side door knob 5, and a thumb turn 15 capable of manually locking and unlocking the electric lock 1 are provided.

  On the outdoor side of the door 8, a request signal is intermittently output to a predetermined area A2 in the vicinity of the door 8 indicated by a one-dot chain line in FIG. 1B, and transmitted from the portable device 20 in response to the request signal. An outdoor antenna 4 that receives an ID code signal including an ID code, an outdoor door knob 6, and a key cylinder 16 that can lock and unlock the electric lock 1 by inserting a mechanical key are provided.

  When the antennas 3 and 4 receive the ID code signal transmitted from the portable device 20, the antennas 3 and 4 output the received signal to the control device 2. The control device 2 outputs an unlocking signal to the electric lock 1 when the ID code signal from the portable device 20 is received, and outputs a locking signal to the electric lock 1 when the ID code signal from the portable device 20 is not received. To do.

Next, the internal structure of the electric lock 1 will be described with reference to FIG. FIG. 2 shows the electric lock 1 disposed on the door 8 and the surrounding structure.
The electric lock 1 includes a lock mechanism 10 that is exposed at the end face of the door 8 and is provided inside the door 8, and a case 17 that is provided on the indoor side surface of the door 8. The case 17 houses the drive device 12 and the drive control device 13. A thumb turn 15 is provided on the upper surface of the case 17. A key cylinder 16 is provided on the surface of the door 8 on the opposite side of the thumb turn 15 across the door 8. The thumb turn 15, the drive device 12, the lock mechanism 10, and the key cylinder 16 are connected to the rotary shaft 19 via a transmission mechanism (not shown) including gears and the like. The case 17 is attached to the door 8 by a mounting plate 18.

  The locking mechanism 10 is provided with a dead bolt 11 as an engaging member so that it can be inserted into a recess (not shown) as an engaging portion provided on the house side facing the door 8. The dead bolt 11 is displaced between a locking position indicated by a two-dot chain line in FIG. 3 and an unlocking position indicated by a solid line in FIG. Further, the lock mechanism 10 includes four position sensors as detection means for detecting each of the locking position and the unlocking position of the dead bolt 11 and the displacement between them, and outputting them to the drive control device 13. A sensor 14 is provided. The drive device 12 is provided with a motor 12a. The rotation shaft 19 is rotated by driving the motor 12a, and the dead bolt 11 is inserted into a recess on the house side or accommodated in the lock mechanism 10. When the dead bolt 11 is protruded, the door 8 is locked by engaging the dead bolt 11 with the recess on the house side. When the dead bolt 11 is accommodated in the lock mechanism 10, the dead bolt 11 and the recess on the house side The door 8 is unlocked by releasing the engagement.

  When the thumb turn 15 is rotated, or when a mechanical key is inserted into the key cylinder 16 and rotated, the dead bolt 11 is protruded or accommodated by rotating the rotation shaft 19. Since the rotation shaft 19 and the transmission mechanism of the drive device 12 are sometimes disconnected by a clutch (not shown), the rotation is not transmitted to the drive device 12.

  The drive control device 13 outputs a pulse signal as a drive signal to the motor 12a of the drive device 12 based on the signal from the control device 2, and rotationally drives the motor 12a by duty control.

  As shown in FIG. 3, the detection sensor 14 is disposed so as to face the upper surface of the dead bolt 11 and at an interval in the displacement direction of the dead bolt 11. On the upper surface of the dead bolt 11, a magnet 11a detected by the detection sensor 14 is provided. The magnet 11a is displaced between the locking position P1, the first intermediate position P2, the second intermediate position P3, and the unlocking position P4 in accordance with the displacement of the dead bolt 11. The detection sensor 14 detects the position of the dead bolt 11 by detecting the magnetic force of the magnet 11a. The detection means is constituted by a detection sensor 14 and a magnet 11a.

Next, the electrical configuration of the electric lock system will be described with reference to FIG.
As shown in FIG. 4, the control device 2 is connected to the indoor antenna 3, the outdoor antenna 4, the operation panel 7, and the drive control device 13 of the electric lock 1. The control device 2 includes a memory 2a that stores an ID code and the like. The drive control device 13 is connected to the control device 2, the motor 12 a of the drive device 12, and the detection sensor 14.

  The control device 2 intermittently outputs transmission signals to the indoor antenna 3 and the outdoor antenna 4 so as to output request signals for forming the predetermined areas A1 and A2 on the indoor side and the outdoor side of the door 8. When the portable device 20 receives the request signal, the portable device 20 transmits an ID code signal including an ID code. The indoor antenna 3 and the outdoor antenna 4 output the received signal to the control device 2 when the ID code signal is received. When the received signal is input, the control device 2 collates the ID code included in the received signal with the ID code read from the memory 2a, and outputs a unlock signal to the drive control device 13 if they match. . When the unlock signal is input, the drive control device 13 outputs a drive signal to the motor 12a. And the dead bolt 11 is accommodated in the lock mechanism 10 by the drive of the motor 12a, and the door 8 is unlocked.

  On the other hand, the control device 2 outputs a locking signal to the drive control device 13 when no reception signal is received. When the lock signal is input, the drive controller 13 outputs a drive signal to the motor 12a. And the dead bolt 11 protrudes from the lock mechanism 10 by the drive of the motor 12a, and the door 8 is locked.

  When an operation button (not shown) for locking or unlocking is operated, the operation panel 7 outputs an operation signal to that effect to the control device 2. The control device 2 outputs a lock signal or an unlock signal to the drive control device 13 in accordance with the operation signal. When the lock signal or the unlock signal is input, the drive control device 13 locks or unlocks the door 8. The control device 2 detects the state of the electric lock 1 based on the detection signal from the detection sensor 14 of the lock mechanism 10, and outputs a lock or unlock state signal to the operation panel 7. The operation panel 7 displays a locked or unlocked state based on the state signal.

  Next, drive control of the motor 12a by the drive control device 13 will be described with reference to FIGS. The drive control device 13 performs duty control on the motor 12a so that the maximum duty ratio is 50% at normal times, and performs duty control on the motor 12a so that the maximum duty ratio is 80% when abnormal. Do.

  As shown in FIG. 5, at the time of unlocking (locking position P1 → unlocking position P4), while the dead bolt 11 is displaced from the locking position P1 to the first midway position P2, the drive control device 13 moves to the motor 12a. The duty ratio of the pulse signal to be output is gradually increased from 0% and is changed to 50% at the first intermediate position P2. While the dead bolt 11 is displaced from the first midway position P2 to the second midway position P3, the drive control device 13 holds the duty ratio of the pulse signal output to the motor 12a so as to be constant at 50%. In addition, while the dead bolt 11 is displaced from the second intermediate position P3 to the unlocking position P4, the drive control device 13 gradually decreases the duty ratio of the pulse signal output to the motor 12a from 50% to unlock the position P4. To change to 0%.

  On the other hand, during the locking (unlocking position P4 → locking position P1), while the dead bolt 11 is displaced from the unlocking position P4 to the second intermediate position P3, the drive control device 13 performs the duty of the pulse signal output to the motor 12a. The ratio is gradually increased from 0% and is changed to 50% at the second intermediate position P3. While the dead bolt 11 is displaced from the second midway position P3 to the first midway position P2, the drive control device 13 holds the duty ratio of the pulse signal output to the motor 12a so as to be constant at 50%. In addition, while the dead bolt 11 is displaced from the first midway position P2 to the locking position P1, the drive control device 13 gradually decreases the duty ratio of the pulse signal output to the motor 12a from 50% to 0 at the locking position P1. Change to be%.

<When unlocking>
Next, the operation at the time of unlocking will be described.
As shown in the flowchart of FIG. 6 (a), the drive control device 13 moves the dead bolt 11 from the locked position P1 to the unlocked position P4 in the normal mode shown by the solid line in FIG. %), Duty control is performed (step S10). And after predetermined time progress, it is determined whether the detection signal to the effect that the deadbolt 11 is located in the unlocking position P4 is output from the detection sensor 14 (step S11). Here, the predetermined time is a time taken when the drive control device 13 controls the dead bolt 11 to be driven without any problem from the locking position P1 to the unlocking position P4. If it is determined in step S11 that the dead bolt 11 is located at the unlocking position P4 (step S11: YES), the process is terminated. On the other hand, when it is determined that the deadbolt 11 is not located at the unlocking position P4 (step S11: NO), the count value of a counter (not shown) for calculating the number of processes is added (step S12). Is a set value (for example, twice) (step S13). The counter is zero in step S10. Here, since the number of times of processing is the first time (step S13: NO), the process proceeds to step S14, and the abnormal mode (maximum duty ratio 80%) indicated by the one-dot chain line in FIG. A series of duty control is performed by increasing. And it transfers to step S11, and when it determines with the deadbolt 11 being located in the unlocking position P4 after predetermined time progress (step S11: YES), a process is complete | finished. On the other hand, if it is determined that the dead bolt 11 is not located at the unlocking position P4 (step S11: NO), the processing is terminated because the number of times of processing is the second time (step S13: YES). Here, even if it is driven in the abnormal mode by the drive control device 13, if the dead bolt 11 should not be positioned at the unlocking position P4, there is an abnormality in the dead bolt 11 or the locking mechanism 10 or the like. And an abnormal signal is output to the control device 2.

<When locked>
Next, the operation at the time of locking will be described.
As shown in the flowchart of FIG. 6 (b), the drive control device 13 moves the dead bolt 11 from the unlocked position P4 to the locked position P1 in the normal mode (maximum duty ratio 50) indicated by the solid line in FIG. %), Duty control is performed (step S20). And after predetermined time progress, it is determined whether the detection signal to the effect that the deadbolt 11 is located in the locking position P1 is output from the detection sensor 14 (step S21). Here, the predetermined time is a time taken when the drive control device 13 controls the dead bolt 11 to be driven from the unlocking position P4 to the locking position P1 without any problem. If it is determined in step S21 that the dead bolt 11 is located at the locking position P1 (step S21: YES), the process is terminated. On the other hand, when it is determined that the deadbolt 11 is not located at the locking position P1 (step S21: NO), the count value of a counter (not shown) for calculating the number of processes is added (step S22), and the count value is calculated. It is determined whether it is a set value (for example, twice) (step S23). The counter is zero in step S20. Here, since the number of times of processing is the first time (step S23: NO), the process proceeds to step S24, and the abnormal mode (maximum duty ratio 80%) indicated by the one-dot chain line in FIG. A series of duty control is performed by increasing. And it transfers to step S21, and when it determines with the deadbolt 11 being located in the locking position P1 after predetermined time progress (step S21: YES), a process is complete | finished. On the other hand, if it is determined that the deadbolt 11 is not located at the locking position P1 (step S21: NO), the processing is terminated because the number of times of processing is the second time (step S23: YES). Here, even if the drive control device 13 is driven in the abnormal mode, if the dead bolt 11 is not located at the locking position P1, the dead bolt 11 or the locking mechanism 10 is abnormal. Determine and output an abnormal signal to the control device 2.

As described above, according to the embodiment described above, the following effects can be obtained.
(1) When it is not detected that the dead bolt 11 is displaced from the unlocked position and positioned at the locked position during the locking operation, or the dead bolt 11 is displaced from the locked position and positioned at the unlocked position during the unlocking operation. That is, when the dead bolt 11 cannot be displaced to the locked position or the unlocked position, the torque of the motor 12a is increased by increasing the duty ratio with respect to the motor 12a, and the dead bolt 11 is moved to the locked position or Displace to unlocked position. As a result, by increasing the torque of the motor 12a when the torque of the motor 12a is necessary and suppressing the torque of the motor 12a in the normal time, it is possible to suppress the impact sound generated by the dead bolt 11 during locking and unlocking.

  (2) The middle displacement between the locked position and the unlocked position of the dead bolt 11 is detected, and the drive control device 13 puts the dead bolt 11 into a stopped state based on the displacement of the dead bolt 11 detected by the detecting means. By reducing the duty ratio when approaching a predetermined position, the electric actuator can ensure the necessary torque, and the dead bolt 11 can be controlled while suppressing the impact sound generated by the dead bolt 11 during locking and unlocking. The time for displacing between the locking position and the unlocking position can be shortened.

  (3) A displacement in the middle between the locking position and the unlocking position of the dead bolt 11 is detected, and the drive control device 13 detects the first position between the locking position that becomes the stop position by the detecting means and the unlocking position. When it is detected that the intermediate position P2 or the second intermediate position P3 has been reached, the displacement of the dead bolt 11 can be controlled more reliably by reducing the duty ratio. Thereby, the impact sound generated by the deadbolt 11 at the time of locking / unlocking can be further suppressed.

  (4) Since the drive control device 13 outputs an abnormal signal to the control device 2 when the dead bolt 11 is displaced differently from the normal time, the drive control device 13 informs the user of an abnormal installation or the like at an early stage. be able to. For this reason, it is possible to avoid a situation in which an impact sound is likely to occur.

In addition, the said embodiment can be implemented with the following forms which changed this suitably.
In the above embodiment, the maximum duty ratio at normal time is set to 50%, and the maximum duty ratio at abnormal time is set to 80%. However, these duty ratios are determined from the supply voltage, the necessary torque generated by the motor 12a, and the like. What is necessary is just to calculate and it can change suitably.

  In the above embodiment, as shown in FIG. 5, the duty control by the drive control device 13 for the motor 12a is during unlocking while the dead bolt 11 is displaced from the locking position P1 to the first intermediate position P2. The duty ratio is gradually increased, the duty ratio is kept constant while the dead bolt 11 is displaced from the first intermediate position P2 to the second intermediate position P3, and the duty ratio is maintained while the dead bolt 11 is displaced from the second intermediate position P3 to the unlocked position P4. The ratio is gradually decreased. However, the present invention is not limited to this. For example, during unlocking, the duty ratio is gradually increased while the dead bolt 11 is displaced from the locking position P1 to the second intermediate position P3. While the dead bolt 11 is displaced from the second midway position P3 to the unlocking position P4, the duty ratio may be gradually decreased.

  In the above embodiment, as shown in FIG. 5, the duty control by the drive control device 13 for the motor 12 a is performed by changing the duty ratio in the same manner as when locking and unlocking. If the sound generation differs between locking and unlocking, it may be different between locking and unlocking.

  In the above embodiment, the detection sensor 14 that can detect the displacement between the locking position and the unlocking position of the deadbolt 11 is provided, but at least the locking position and the unlocking position of the deadbolt 11 are determined. What is necessary is just to provide the detection means which can detect. For example, a limit switch or the like may be used.

  In the above embodiment, when the dead bolt 11 is displaced differently from the normal time, an abnormal signal indicating that the dead bolt 11 is abnormal is output to the drive control device 13, but the abnormal signal may not be output.

  In the above embodiment, the displacement of the dead bolt 11 as the engaging member is detected by the magnet 11a provided on the upper surface of the dead bolt 11 and the detection sensor 14, but detection by a rotary encoder or the like in the driving device 12 Means may be provided to detect the displacement of the dead bolt 11. Here, the rotary encoder detects the position of the dead bolt 11 based on the rotational position and the rotational speed of the motor 12a or the rotating shaft 19.

  In the above embodiment, the ID code is collated by the wireless signal between the portable device 20 and the control device 2 and applied to the one in which locking / unlocking is performed within the predetermined range A1, A2, but not limited to this, by the portable device Locking and unlocking may be performed by remote control or the like.

  -In the said embodiment, although applied to what locks / unlocks by the radio | wireless signal of the portable device 20 and the control apparatus 2, by inputting a PIN code etc. into the input device provided separately irrespective of radio | wireless communication You may apply this invention to what performs locking / unlocking.

In the above embodiment, the dead bolt 11 is used as the engaging member, but an engaging member such as a sickle lock may be used.
In the above embodiment, the present invention is applied as an electric lock system for a house, but may be applied to other buildings such as factories.

(A), (b) The block diagram of an electric lock system. AA sectional drawing of the electric lock for buildings. The figure which shows an engaging member and a detection sensor. The block diagram of an electric lock system. The figure which shows the relationship between the duty ratio output to an electric actuator, and the position of an engagement member. (A) The flowchart which shows the process of the drive control apparatus at the time of unlocking, (b) The flowchart which shows the process of the drive control apparatus at the time of locking.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Electric lock, 2 ... Control apparatus, 2a ... Memory, 3 ... Indoor antenna, 4 ... Outdoor antenna, 5 ... Indoor side door knob, 6 ... Outdoor side door knob, 7 ... Control panel, 8 ... Door, 10 ... Lock mechanism, DESCRIPTION OF SYMBOLS 11 ... Dead bolt, 11a ... Magnet, 12 ... Drive apparatus, 12a ... Motor, 13 ... Drive control apparatus, 14 ... Detection sensor, 15 ... Thumb turn, 16 ... Key cylinder, 17 ... Case, 18 ... Mounting plate, 19 ... Time A moving shaft, 20 ... portable machine, A1, A2 ... predetermined area, P1 ... locking position, P2 ... first halfway position, P3 ... second halfway position, P4 ... unlocking position.

Claims (2)

An engaging member that performs locking and unlocking by displacing between a locking position that is engaged with a recess provided in the building and an unlocking position that is disengaged; and an electric actuator that drives the engaging member In a building electric lock comprising:
A drive control device that performs duty control on the electric actuator, and a detection unit that detects that the engagement member is positioned at each of a locked position and an unlocked position,
The detecting means that the engaging member is displaced from the unlocked position during the locking operation and positioned at the locked position, or that the engaging member is displaced from the locked position and positioned at the unlocked position during the unlocking operation. If not detected, the drive control device makes the duty ratio larger than a normal value. In the building electric lock according to claim 1,
The detection means can further detect a midway displacement between the locking position and the unlocking position of the engaging member, and the control device can detect a predetermined position between the locking position that is the stop position and the unlocking position. A building electric lock characterized by reducing the duty ratio when it is detected by the detecting means.

Images