JP2021147898A - Authenticated electric lock - Google Patents

Abstract

To provide an authenticated electric lock that can easily improve space efficiency.SOLUTION: An authenticated electric lock includes: a handle 2 of substantially plate-like shape having a substantially flat surface 2a on a front surface and capable of changing a posture between a closed posture and an open posture; an antenna 15 for short-range wireless communication arranged in the thickness of the handle 2 or on the back surface of a handle body 201; a latch bolt 4 that advances and retreats between locked and open positions in response to the posture change of the handle 2; a communication section 17 that performs short-range wireless communication via the antenna 15; an authentication section 182 that performs authentication based on authentication data received by the communication section 17; and a bolt control section 183 that switches between prohibiting and permitting the advance and retreat of the latch bolt 4 in response to the posture change of the handle 2 based on the authentication result by the authentication section 182. The handle body 201 on the front side of the antenna 15 in the handle 2 is made of insulating material.SELECTED DRAWING: Figure 5

Description

The present invention relates to an authentication type electric lock that performs authentication by short-range wireless communication.

Conventionally, an electric lock that unlocks and locks a lock by exchanging a wireless signal with a portable device owned by the user and performing authentication has been known (see, for example, Patent Document 1). ..

JP-A-2010-101124

By the way, as an authentication method using a wireless signal, there is an authentication method using short-range wireless communication (NFC: Near Field Communication). When such an electric lock is attached to the door, it is necessary to provide a reading antenna for short-range wireless communication near the surface of the door. In addition, it is necessary to provide a space for holding or touching the antenna at a position where it is easy to hold or touch the device for short-range wireless communication. Therefore, the size of the electric lock becomes large, and a space for attaching the antenna separately from the electric lock is required.

An object of the present invention is to provide a certified electric lock that can easily improve space efficiency.

The authentication type electric lock according to the present invention has a substantially plate-like shape having a substantially flat flat surface on the front surface, and has a handle whose posture can be changed between a closed posture and an open posture, and within the thickness of the handle or the above. An antenna for short-range wireless communication arranged on the back surface of the handle, a bolt that is a latch bolt or a lock bolt that moves back and forth between the locking position and the unlocking position according to a change in the attitude of the handle, and the above. The communication unit that performs short-range wireless communication by the antenna, the authentication unit that authenticates based on the authentication data received by the communication unit, and the authentication unit that responds to the change in the attitude of the handle based on the authentication result by the authentication unit. A bolt control unit for switching between prohibition and permission of bolt advance / retreat is provided, and a portion of the handle on the front side of the antenna is made of an insulating material.

According to this configuration, the part of the handle used for the advance / retreat operation of the bolt on the front side of the antenna is made of an insulating material, and the antenna arranged within the thickness of the handle or on the back of the handle is used for a short distance. Since wireless communication can be performed, there is no need to provide a space for installing the antenna in a place other than the originally required handle. As a result, it becomes easy to improve space efficiency.

Further, the electrodes arranged within the thickness of the handle or the back surface of the handle, and the supply and cutoff of the power supply voltage for operating at least one of the communication unit, the authentication unit, and the bolt control unit are provided. Detects that the device targeted for short-range wireless communication is close to the handle based on the change in the capacitance of the electrode while the power supply control unit to be switched and the power supply voltage are cut off. A proximity detection unit is further provided, and a portion of the handle on the front surface side of the electrode is made of an insulating material, and the power supply control unit receives when the proximity detection unit detects the proximity. It is preferable to start supplying the power supply voltage.

According to this configuration, when the device targeted for short-range wireless communication is not close to the handle, the power supply voltage for at least one of the communication unit, the authentication unit, and the volt control unit is cut off, and the device can handle the handle. Since the power supply voltage for at least one of them is supplied when the voltage is close to, the power consumption of the certified electric lock can be reduced.

Further, it is preferable that the electrodes are arranged side by side with the antenna, and the capacitance is the capacitance between the antenna and the electrodes.

According to this configuration, since the antenna for short-range wireless communication can be used as an electrode for proximity detection, it is not necessary to separately provide another electrode facing the electrode for proximity detection.

Further, an auxiliary electrode arranged alongside the electrode is further provided within the thickness of the handle or on the back surface of the handle, and the portion of the handle on the front surface side of the auxiliary electrode is made of an insulating material. , The capacitance may be the capacitance between the electrode and the auxiliary electrode.

According to this configuration, the antenna for short-range wireless communication and the proximity detection unit can be separated, so that the possibility that the proximity detection unit malfunctions due to the signal of short-range wireless communication is reduced.

Further, the handle is swung around a back protrusion protruding in the back direction of the handle and an axis extending in the vicinity of one end of the handle along the surface direction of the flat surface and in a direction orthogonal to the advancing / retreating direction of the bolt. It is preferable to further provide a handle support portion that supports displaceably.

According to this configuration, the direction in which the handle swings and the direction in which the bolt advances and retreats coincide with each other, so that it is easy to advance and retreat the bolt between the locking position and the unlocking position according to the change in the posture of the handle. be.

Further, the bolt is a latch bolt, further provided with an urging member for urging the latch bolt toward the locking position, and extending on the side surface of the latch bolt in a direction orthogonal to the advancing / retreating direction of the latch bolt. An engaging groove is formed, and an engaging portion that engages with the engaging groove is provided near the tip of the back surface protrusion, and the width of the engaging portion in the advancing / retreating direction is larger than the width of the engaging groove. The difference between the width of the engaging portion in the advancing / retreating direction and the width of the engaging groove is preferably larger than the distance between the locking position and the unlocking position.

According to this configuration, the latch bolt is urged to the locked position by the urging member, and moves to the unlocked position by retracting the engaging portion due to the change in the posture of the handle. Since the difference between the width of the engaging portion in the advancing / retreating direction and the width of the engaging groove is larger than the distance between the locking position and the unlocking position, the engaging portion is located at a position corresponding to the locking position. Even if it is, by closing the door with the certified electric lock, the latch bolt can be retracted against the urging force, and the door can be closed without the latch bolt getting caught. Become.

Further, an engaging piece whose posture can be changed between the engaging posture that engages with the back protrusion and the disengaging posture that is disengaged from the back protrusion, and the engaging piece are placed in the engaging posture. It is preferable that the bolt control unit further includes an actuator for changing the posture between the and the release posture, and the bolt control unit switches between the prohibition and the permission by changing the posture of the engaging piece by the actuator.

According to this configuration, by setting the engaging piece in the engaging posture and making it impossible to change the posture of the handle, it is possible to prohibit the advancement and retreat of the bolt in response to the change in the posture of the handle.

Further, a plate arranged in the same plane as the flat surface or substantially parallel to the flat surface, a display window penetrating the plate, and the engaging piece are connected and interlocked with the posture change of the engaging piece. Then, it is preferable that the back side of the plate moves relative to the plate, and at least one of the engaging posture and the disengaging posture further includes a display piece located on the back side of the display window. ..

According to this configuration, whether the engaging piece is in the engaging position or the unlocking position, that is, whether the authentication type electric lock is locked or unlocked is displayed by the state of the display piece visible from the display window. can do.

The authentication type electric lock having such a configuration can easily improve the space efficiency.

It is a perspective view which looked at the authentication type electric lock which concerns on one Embodiment of this invention from the front side. It is a perspective view of the authentication type electric lock shown in FIG. 1 as seen from the back side. It is an exploded perspective view of the authentication type electric lock shown in FIG. It is a perspective view of a handle and a back protrusion. It is an exploded perspective view of the handle and the back protrusion shown in FIG. It is a perspective view for demonstrating the engaging posture of the engaging piece. It is the figure which looked at the display window from the front side when the display piece was in the release posture. It is the figure which looked at the display window from the front side when the display piece was in an engaging posture. It is a perspective view which shows the state which the latch bolt has moved to an unlocking position. It is a perspective view which shows the state which the latch bolt moved to an unlocking position with a handle closed posture. It is a block diagram which shows an example of the electric structure of the authentication type electric lock shown in FIG. It is a top view of the antenna board shown in FIG. It is a flowchart which shows an example of the operation of the authentication type electric lock shown in FIG. It is a flowchart which shows an example of the operation of the authentication type electric lock shown in FIG. It is a timing diagram for demonstrating the operation of the authentication type electric lock shown in FIG. It is a block diagram which shows the modification of the authentication type electric lock shown in FIG.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings. It should be noted that the configurations with the same reference numerals in the respective figures indicate that they are the same configurations, and the description thereof will be omitted. Each figure shows XYZ orthogonal coordinate axes as appropriate.

FIG. 1 is a perspective view of an authentication type electric lock according to an embodiment of the present invention as viewed from the front side. + X is the front side of the certified electric lock 1, -X is the back side of the certified electric lock 1, + Y is the left direction of the certified electric lock 1, -Y is the right direction of the certified electric lock 1, and + Z is the certified electric lock 1. Above the electric lock 1, -Z indicates below the certified electric lock 1.

The authentication type electric lock 1 shown in FIG. 1 includes a plate 1a and a handle 2. The plate 1a has a substantially rectangular plate-like shape. The plate 1a is provided with a recess 1b that is recessed in a substantially rectangular shape. The handle 2 is attached to a region of about 1/2 on the −Y side in the recess 1b. This facilitates an operation in which the user inserts a finger from the + Y side of the recess 1b into the back side of the handle 2 and pulls out the handle 2 toward the front.

A display window 1c is formed on the plate 1a. The display piece 3a arranged on the back side of the plate 1a can be seen from the display window 1c.

The handle 2 has a substantially rectangular plate-like shape. The front surface of the handle 2 is a substantially flat flat surface 2a. The handle 2 can be changed in posture between a closed posture in which the flat surface 2a is flush with the front surface of the plate 1a and an open posture in which the flat surface 2a protrudes from the recess 1b. The flat surface 2a is not limited to the example in which the flat surface 2a is flush with the front surface of the plate 1a in the closed posture. The front surface of the plate 1a and the flat surface 2a may have a step parallel to each other in a closed posture. Alternatively, the front surface of the plate 1a and the flat surface 2a do not have to be parallel in a closed posture.

FIG. 2 is a perspective view of the authentication type electric lock 1 shown in FIG. 1 as viewed from the back side. The authentication type electric lock 1 is mainly provided with an engaging piece 3, a display piece 3a, a latch bolt 4, an actuator 5, and bolt guides 1e and 1f on the back side thereof.

A bottomed cylindrical bolt guide 1e and a rectangular frame-shaped bolt guide 1f are arranged on the back side of the bottom wall of the recess 1b. The bolt guides 1e and 1f hold the latch bolt 4 so that it can move forward and backward. The Y-axis direction corresponds to the advancing / retreating direction of the latch bolt 4, the + Y direction corresponds to the traveling direction, and the −Y direction corresponds to the retreating direction.

The position where the latch bolt 4 protrudes in the + Y direction is the locking position, and the position where the latch bolt 4 retracts in the −Y direction is the unlocking position. An engaging groove 4a extending in the Z direction orthogonal to the advancing / retreating direction of the latch bolt 4 is formed on the front surface side surface of the latch bolt 4. The width of the engaging groove 4a in the advancing / retreating direction (Y-axis direction) is the width W1 (see FIG. 3).

A coil spring 8 (a urging member) is arranged between the bottom portion of the bolt guide 1e and the base end portion of the latch bolt 4. The coil spring 8 urges the latch bolt 4 in the + Y direction, that is, in the locked position.

FIG. 3 is an exploded perspective view of the authentication type electric lock 1 shown in FIG. FIG. 4 is a perspective view of the handle 2 and the rear projections 21 and 22. Back protrusions 21 and 22 that project substantially like a wall in the back direction are provided at both ends of the handle 2 in the Z-axis direction. The + Y-side edges of the back projections 21 and 22 extend substantially perpendicular to the flat surface 2a from the + Y-side edges of the handle 2.

The −Y side edges of the back protrusions 21 and 22 extend inclined from the −Y side edge of the handle 2 toward the tops 21a and 22a of the back protrusions 21 and 22. A notch groove 21b notched in the + Y direction is formed on the inclined edge portion on the −Y side of the back projection 21.

FIG. 5 is an exploded perspective view of the handle 2 and the rear projections 21 and 22 shown in FIG. The handle 2 is configured by laminating a substantially plate-shaped handle body 201, a substantially rectangular plate-shaped antenna substrate 202, and a cover plate 203. The antenna board 202 is attached to the back surface of the handle body 201, and the cover plate 203 is screwed to the handle body 201 with screws 204 and 204 so as to cover the antenna board 202.

The antenna board 202 is, for example, a printed wiring board, and the loop-shaped antenna 15 and the substantially L-shaped electrode 16 are provided so as to face each other in the same plane at a predetermined distance. As a result, the antenna 15 and the electrode 16 are arranged within the thickness of the handle 2.

The handle body 201 and the cover plate 203 are made of an insulating material such as resin or ceramic. As a result, the front surface (+ X) side of the antenna 15 and the electrode 16 in the handle 2 becomes the handle body 201 of the insulating material, so that the antenna 15 transmits and receives radio signals for short-range wireless communication and the electrode 16 performs capacitance. The possibility that the capacitance detection is hindered by the handle body 201 is reduced.

The cover plate 203 does not necessarily have to be an insulating material, but the cover plate 203 may also be made of an insulating material from the viewpoint of further reducing the influence on the transmission / reception of wireless signals and the detection of capacitance. , More preferred.

For example, the handle 2 may be formed by molding, and the antenna 15 and the electrode 16 may be embedded and molded within the thickness of the handle 2. In this case, the front surface (+ X) side and the back surface (−X) side of the antenna 15 and the electrode 16 can be used as the insulating material.

Alternatively, the handle body 201 may be used as it is without the cover plate 203. The antenna substrate 202 may be arranged on the back surface of the handle body 201, which is a handle.

A pair of openings 1d and 1d are formed on the bottom wall of the recess 1b at positions corresponding to the back protrusions 21 and 22 (see FIGS. 2 and 3). Back protrusions 21 and 22 project from the openings 1d and 1d toward the back side of the bottom wall of the recess 1b.

A bracket 9 projecting in the rear direction is erected on the back surface of the plate 1a or the back surface of the bottom wall of the recess 1b.

The actuator 5 is attached to the bracket 9 by, for example, a screw 9a. The actuator 5 is, for example, a latching solenoid. The actuator 5 may be a monostable latching solenoid that returns by an external return spring.

The engaging piece 3 is a plate-shaped member that is elongated in the substantially Y-axis direction. The −Y side end of the engaging piece 3 is oscillatingly supported by a screw 12 on the back surface of the plate 1a or the bottom wall of the recess 1b. The tip of the plunger 7 of the actuator 5 is connected to the substantially central portion of the engaging piece 3. As a result, when the actuator 5 advances and retreats the plunger 7, the engaging piece 3 changes its posture between the engaging posture and the disengaging posture.

In the engaging posture, the + Y side end of the engaging piece 3 engages with the notch groove 21b in the closed posture to lock the handle 2 (see FIG. 6). As a result, the authentication type electric lock 1 is locked. In the released posture, the + Y side end of the engaging piece 3 is separated from the notch groove 21b, and the handle 2 can be changed to the open posture (see FIG. 2).

The display piece 3a is connected to the engaging piece 3 and extends, and moves relative to the plate 1a on the back surface side of the plate 1a in conjunction with the posture change of the engaging piece 3. The display piece 3a is located on the back side of the display window 1c in both the engaging posture and the disengaging posture.

FIG. 7 is a view of the display window 1c viewed from the front side when the display piece 3a is in the release posture. FIG. 8 is a view of the display window 1c viewed from the front side when the display piece 3a is in the engaged posture. On the front surface of the display piece 3a, an unlocking mark 3b indicating unlocking and a locking mark 3c indicating locking are displayed. When the display piece 3a is in the unlocked posture, the unlock mark 3b is located on the back side of the display window 1c, and when the display piece 3a is in the engaged posture, the lock mark 3c is located on the back side of the display window 1c.

As a result, when the authentication type electric lock 1 is unlocked, the unlock mark 3b can be seen from the display window 1c, and when the authentication type electric lock 1 is locked, the lock mark 3c can be seen from the display window 1c. The mark visible from the display window 1c allows the user to confirm whether the authentication type electric lock 1 is unlocked or locked.

The display piece 3a is not limited to the example in which the display piece 3a is located on the back side of the display window 1c in both the engaging posture and the disengaging posture. The display piece 3a is located on the back side of the display window 1c in either the engaging posture or the disengaging posture, and the authentication type electric lock 1 is unlocked depending on whether or not the display piece 3a can be seen from the display window 1c. It may indicate whether it is locked or locked.

The handle 2 is swing-displaceable around a handle support rod 10 (handle support portion) that penetrates through holes 10a and 10a provided in the vicinity of the base ends of the back projections 21 and 22. The handle support rod 10 is located on the + Z side and the −Z side of the recess 1b so as to extend along the surface direction of the flat surface 2a and in the direction orthogonal to the advancing / retreating direction of the latch bolt 4 in the vicinity of the + Y side end of the handle 2. It is axially supported by both side walls.

The handle support portion does not have to be a rod-shaped member. For example, the handle 2 may be pivotally supported on the side wall of the concave portion 1b by a concave portion or a convex portion provided near the base end portion of the back surface protrusions 21 and 22. By being pivotally supported in this way, the handle 2 is centered on a virtual axis extending along the plane direction of the flat surface 2a in the vicinity of the + Y side end of the handle 2 and in a direction orthogonal to the advancing / retreating direction of the latch bolt 4. It may be possible to swing and displace.

An engaging rod 11 (engaging portion) that engages with the engaging groove 4a is bridged between the vicinity of the top portion 21a and the vicinity of the top portion 22a of the handle 2. The width of the engaging rod 11 in the Y-axis direction is W2. The width W2 of the engaging rod 11 is smaller than the width W1 of the engaging groove 4a. The difference between the width W2 and the width W1 is larger than the distance between the locking position and the unlocking position of the latch bolt 4.

As a result, when the user pulls out the handle 2 to open the posture, the rear projections 21 and 22 rotate around the handle support rod 10 as a fulcrum, and the engaging rod 11 engages with the engaging groove 4a in the −Y direction. Moving. As a result, the latch bolt 4 moves to the unlocking position against the urging force of the coil spring 8, and the authentication type electric lock 1 is unlocked (see FIG. 9).

Further, when the user releases the handle 2, the latch bolt 4 is moved to the locked position by the urging force of the coil spring 8, and the authentication type electric lock 1 is temporarily tightened. When the latch bolt 4 moves to the locked position, the engaging rod 11 engaged with the engaging groove 4a moves in the + Y direction, and the rear projections 21 and 22 swing and displace with the handle support rod 10 as a fulcrum. As a result, the handle 2 changes its posture to the closed posture (see FIG. 2).

Further, the width W2 of the engaging rod 11 is smaller than the width W1 of the engaging groove 4a, and the difference between the width W2 and the width W1 is larger than the distance between the locking position and the unlocking position of the latch bolt 4. Even when the handle 2 is in the closed position and the engaging piece 3 is engaged with the notch groove 21b, the latch bolt 4 is moved to the unlocked position by closing the door to which the authentication type electric lock 1 is attached. The door can be closed (see FIG. 10).

FIG. 11 is a block diagram showing an example of the electrical configuration of the authentication type electric lock 1 shown in FIG. The authentication type electric lock 1 shown in FIG. 11 includes an antenna 15, an electrode 16, a communication unit 17, a control unit 18, a proximity detection unit 19, a drive unit 20, a battery B (power supply), a switching element SW (power supply control unit), and the like. And an actuator 5.

FIG. 12 is a plan view of the antenna substrate 202 shown in FIG. One end of the antenna 15 is connected to the circuit ground and the communication unit 17 via the connector CN, and the other end of the antenna 15 is connected to the communication unit 17 via the connector CN. The antenna 15 is wound in a substantially rectangular shape.

The electrodes 16 are arranged so that the two L-shaped sides face each other of the two sides of the antenna 15. As a result, a capacitance is generated between the antenna 15 and the electrode 16 via a space. The electrode 16 is connected to the proximity detection unit 19 via the connector CN.

The communication unit 17 is a communication circuit that performs short-range wireless communication (NFC: Near Field Communication) by the antenna 15. As the communication method of the communication unit 17, various short-range wireless communication methods such as ISO / IEC18092, ISO / IEC21418, FeliCa (registered trademark), and Mifare (registered trademark) can be used.

A device (hereinafter referred to as an electronic key) targeted for short-range wireless communication can be held or touched by a user on a flat surface 2a of a handle 2, such as a card key or an RFID (Radio Frequency IDentification) tag. , Various devices.

In the proximity detection unit 19, an electronic key is attached to the antenna 15 and the electrode 16 based on the change in the capacitance of the electrode 16, specifically, based on the change in the capacitance between the antenna 15 and the electrode 16. Detects close proximity.

Since the antenna 15 and the electrode 16 are arranged within the thickness of the handle 2 or on the back surface of the handle body 201, if it is detected that the electronic key is close to the antenna 15 and the electrode 16, the electronic key is close to the handle 2. That is, it is detected that the user holds or touches the electronic key on the flat surface 2a of the handle 2.

The electronic key includes an antenna and other conductors for short-range wireless communication. Therefore, when the electronic key approaches the flat surface 2a, the capacitance between the antenna 15 and the electrode 16 changes. The proximity detection unit 19 detects that the electronic key is close to the flat surface 2a of the handle 2 by detecting the change in the capacitance. As the proximity detection unit 19, for example, a Proximity Detector MTCH101 manufactured by Microchip Technology can be used.

The drive unit 20 is a so-called driver circuit that supplies a drive voltage for driving the actuator 5. The drive unit 20 advances and retreats the plunger 7 of the actuator 5 in response to a control signal from the control unit 18. The actuator 5 is not limited to the solenoid as long as the engaging piece 3 can be changed in posture between the engaging posture and the disengaging posture. For example, the actuator 5 may change the posture of the engaging piece 3 between the engaging posture and the disengaging posture by the driving force of the motor.

The control unit 18 is configured by using a so-called microcomputer. The control unit 18 includes, for example, a CPU (Central Processing Unit) that executes a predetermined logical operation, a RAM (Random Access Memory) that temporarily stores data, a non-volatile storage unit 184 such as a flash memory, and peripherals thereof. It is equipped with a circuit, etc. The control unit 18 functions as a setting processing unit 181, an authentication unit 182, and a bolt control unit 183 by executing a predetermined control program stored in the storage unit 184 or the like.

The battery B outputs the power supply voltage Vbat as the operating voltage to the proximity detection unit 19. Further, the battery B outputs the power supply voltage Vbat as the power supply voltage Vsw via the switching element SW to the communication unit 17, the control unit 18, and the drive unit 20 as these operating voltages. The power supply is not limited to batteries. However, by using the battery as a power source, wiring work for supplying the power source to the authentication type electric lock 1 becomes unnecessary, so that the battery B is suitable as a power source.

The switching element SW may be, for example, a semiconductor switching element or a relay switch. The switching element SW is a power source for operating the communication unit 17, the control unit 18 (setting processing unit 181, the authentication unit 182, the bolt control unit 183), and the drive unit 20 in response to the control signal from the proximity detection unit 19. Switch between supply and cutoff of voltage Vsw.

The proximity detection unit 19 normally turns off the switching element SW, and when it detects that the electronic key is close to the flat surface 2a of the handle 2, the proximity detection unit 19 turns on the switching element SW for a preset drive time tw. Let me. The drive time tw may be set by, for example, the integration constant of the integration circuit, or may be clocked by the timer circuit.

As a result, when the electronic key approaches the flat surface 2a of the handle 2, the communication unit 17, the control unit 18 (setting processing unit 181, the authentication unit 182, the bolt control unit 183) only during the drive time tw when the switching element SW is turned on. ), And the power supply voltage Vsw is supplied as the operating voltage to each part of the drive unit 20, and each part operates.

Therefore, the communication unit 17, the control unit 18 (setting processing unit 181, the authentication unit 182, the bolt control unit 183), and the drive unit 17, except for the period of the drive time tw after the electronic key approaches the flat surface 2a of the handle 2. Since the supply of the power supply voltage Vsw to the unit 20 is cut off, the power consumption of the authentication type electric lock 1 is reduced, and the time during which the authentication type electric lock 1 can be operated by the battery B can be extended.

The setting processing unit 181, the authentication unit 182, and the bolt control unit 183 may be configured by separate elements that receive power supply independently of each other. The switching element SW is not limited to an example of switching between supply and cutoff of the power supply voltage Vsw for all of the communication unit 17, the setting processing unit 181, the authentication unit 182, the volt control unit 183, and the drive unit 20. The switching element SW may switch between supplying and shutting off the operating power supply voltage to at least one of these parts, and the power supply voltage Vbat may be supplied to each part other than at least one of them. ..

The setting processing unit 181 stores the authentication data for authenticating the electronic key, for example, an ID (IDentification), read from the electronic key by the communication unit 17 in the storage unit 184.

The authentication unit 182 authenticates based on the authentication data received by the communication unit 17.

The bolt control unit 183 switches between prohibition and permission of the advance / retreat of the latch bolt 4 according to the change in the posture of the handle 2 based on the authentication result by the authentication unit 182.

Next, the operation of the authentication type electric lock 1 configured as described above will be described. 13 and 14 are flowcharts showing an example of the operation of the authentication type electric lock 1 shown in FIG. FIG. 15 is a timing diagram for explaining the operation of the authentication type electric lock 1 shown in FIG. Hereinafter, the case where the authentication type electric lock 1 is attached to the storage door of the locker will be described as an example. The authentication type electric lock 1 is not limited to the example of being attached to the storage door of the locker, and the attachment target is not limited.

With reference to FIGS. 13 and 15, first, the handle 2 is in the closed position, the authentication type electric lock 1 is not locked, and the locker storage door is temporarily tightened with the latch bolt 4 (FIG. 2). The locking operation in the above will be described.

When the user pulls out the handle 2 to open the position, the engaging rod 11 moves in the −Y direction, and the latch bolt 4 moves to the unlocked position accordingly to release the temporary tightening (FIG. 9). The storage door opens. When the user stores the article in the locker in this state and closes the storage door, the storage door is temporarily tightened by the latch bolt 4 (FIG. 2) (step S1).

Next, when the user holds or touches the electronic key on the flat surface 2a of the handle 2 (step S2), the proximity detection unit 19 detects the proximity of the electronic key to the handle 2 (step S3, timing T1). The switching element SW is turned on (step S4, timing T2). When the switching element SW is turned on, the power supply voltage Vsw is supplied to the communication unit 17, the control unit 18, and the drive unit 20 as an operation voltage, and the communication unit 17, the control unit 18, and the drive unit 20 start operating.

Since the handle 2 is a part operated by the user, it is easy to hold or touch the electronic key on the handle 2. Further, since the antenna substrate 202 is arranged within the thickness of the handle 2 required for the user to operate by hand or on the back surface of the handle body 201, there is a space only for providing an antenna for short-range wireless communication. unnecessary. Therefore, the authentication type electric lock 1 can easily improve the space efficiency.

Next, the communication unit 17 receives the authentication data of the electronic key by short-range wireless communication, and the setting processing unit 181 stores the authentication data in the storage unit 184 (step S5). Since the operation of holding or touching the electronic key by a human is sufficiently slower than the processing speed at which the authentication type electric lock 1 operates, the communication unit 17 detects the proximity of the electronic key to the handle 2 by the proximity detection unit 19. After that, the authentication data of the electronic key can be read while the electronic key is still close to the handle 2 and in a position where short-range wireless communication is possible.

Next, the bolt control unit 183 changes the posture of the engaging piece 3 into the engaging posture by the actuator 5 and locks the engaging piece 3 (step S6, timing T3, FIG. 6). Specifically, the bolt control unit 183 outputs a locking voltage VL that moves the plunger 7 in the + Z direction from the drive unit 20 to the actuator 5 in a pulsed manner. As a result, the engaging piece 3 changes its posture to the engaging posture, and the authentication type electric lock 1 is locked.

When the engaging piece 3 changes its posture to the engaging posture, even if the handle 2 is to be pulled out, the engaging piece 3 and the notch groove 21b interfere with each other and the handle 2 cannot be pulled out. As a result, the attitude of the handle 2 cannot be changed, so that the latch bolt 4 is prohibited from moving forward or backward in response to the change in the attitude of the handle 2.

Next, when the drive time tw elapses from the timing T2, the switching element SW is turned off and the process ends (step S7, timing T4). As a result, the supply of the power supply voltage Vsw to the communication unit 17, the control unit 18, and the drive unit 20 is cut off, and the standby power is reduced, so that the battery B can be made to last longer.

The drive time tw is set in advance to be equal to or longer than the time required for steps S4 to S6. The switching element SW is not limited to the example of turning off after the drive time tw elapses. For example, even if the bolt control unit 183 turns off the switching element SW at the timing when the posture change of the engaging piece 3 is completed in step S6. good.

Next, with reference to FIGS. 14 and 15, the unlocking operation in the state where the handle 2 is in the closed posture, the engaging piece 3 is in the engaging posture, and the authentication type electric lock 1 is locked (FIG. 6). explain. First, when the user holds or touches the electronic key on the flat surface 2a of the handle 2 (step S11), the proximity detection unit 19 detects the proximity of the electronic key to the handle 2 (step S12, timing T11) and switches. The element SW is turned on (step S13, timing T12).

When the switching element SW is turned on, the power supply voltage Vsw is supplied to the communication unit 17, the control unit 18, and the drive unit 20 as an operation voltage, and the communication unit 17, the control unit 18, and the drive unit 20 start operating.

Next, as in step S5, the communication unit 17 receives the authentication data of the electronic key by short-range wireless communication. Further, the authentication data received by the communication unit 17 is compared with the authentication data stored in the storage unit 184 by the authentication unit 182 (step S14).

As a result of the comparison, if the authentication data received by the communication unit 17 and the authentication data stored in the storage unit 184 do not match (NO in step S15), the authentication fails and the process proceeds to step S18.

On the other hand, if the authentication data received by the communication unit 17 and the authentication data stored in the storage unit 184 match (YES in step S15), the authentication is successful and the bolt control unit 183 is engaged by the actuator 5. The piece 3 is changed to the unlocked posture and unlocked (step S16, timing T13, FIG. 2). Specifically, the bolt control unit 183 outputs an unlocking voltage VU that moves the plunger 7 in the −Z direction from the drive unit 20 to the actuator 5 in a pulsed manner. As a result, the engaging piece 3 changes its posture to the released posture, the authentication type electric lock 1 is unlocked, and the latch bolt 4 is allowed to move forward and backward according to the posture change of the handle 2.

Next, when the user pulls out the handle 2 to open the posture, the engaging rod 11 moves in the −Y direction, and the latch bolt 4 moves to the unlocked position accordingly to release the temporary tightening (FIG. FIG. 9), the storage door opens. When the user stores the article in the locker in this state and closes the storage door, the storage door is temporarily tightened by the latch bolt 4 (FIG. 2) (step S17).

Next, when the drive time tw elapses from the timing T12, the switching element SW is turned off and the process ends (step S18, timing T14). As a result, the supply of the power supply voltage Vsw to the communication unit 17, the control unit 18, and the drive unit 20 is cut off, and the standby power is reduced, so that the battery B can be made to last longer.

The drive time tw is set in advance to be longer than the time required for steps S4 to S6 and longer than the time required for steps S13 to S16. The switching element SW is not limited to the example of turning off after the drive time tw elapses. For example, even if the bolt control unit 183 turns off the switching element SW at the timing when the posture change of the engaging piece 3 is completed in step S16. good.

The execution order of step S17 and step S18 may be interchanged, and step S18 may be executed in the middle of step S17.

FIG. 16 is a block diagram showing a modified example of the authentication type electric lock 1 shown in FIG. The authentication type electric lock 1A shown in FIG. 16 is different from the authentication type electric lock 1 in that the antenna board 202a is provided instead of the antenna board 202. The antenna substrate 202a includes, for example, a substantially linear electrode 16a and an auxiliary electrode 14 extending linearly in substantially parallel with the electrode 16a at a predetermined interval.

Both ends of the antenna 15 are connected to the communication unit 17, the electrode 16a is connected to the proximity detection unit 19, and the auxiliary electrode 14 is connected to the circuit ground. The proximity detection unit 19 uses an electronic key as the electrode 16a and the auxiliary electrode based on the change in the capacitance of the electrode 16a, specifically based on the change in the capacitance between the electrode 16a and the auxiliary electrode 14. Detects that it is close to 14.

According to the authentication type electric lock 1A, the antenna 15 and the proximity detection unit 19 are separated, and the short-range wireless communication signal is not input to the proximity detection unit 19. As a result, the possibility that the proximity detection unit 19 malfunctions due to the short-range wireless communication signal is reduced. On the other hand, according to the authentication type electric lock 1, since it is not necessary to provide the auxiliary electrode 14, it becomes easy to miniaturize the antenna substrate 202.

The authentication type electric locks 1 and 1A do not have to include the display piece 3a. Further, although an example of using a latch bolt as a bolt is shown, the bolt may be a dead bolt. Further, although the example in which the engaging piece 3 is engaged with the engaging groove 4a and the handle 2 is fixed to lock the handle 2, the locking piece 3 may be locked by fixing the bolt.

Further, in the example, the width W2 of the engaging rod 11 is smaller than the width W1 of the engaging groove 4a, and the difference between the width W2 and the width W1 is larger than the distance between the locking position and the unlocking position of the latch bolt 4. The width W1 and the width W2 may be substantially the same without limitation. Further, the electrodes 16 and 16a, the auxiliary electrode 14, the proximity detection unit 19, and the switching element SW may not be provided.

1,1A Certified electric lock 1a Plate 1b Recess 1c Display window 1d, 1d Opening 1e, 1f Bolt guide 2 Handle 2a Flat surface 3 Engagement piece 3a Display piece 3b Unlock mark 3c Lock mark 4 Latch bolt (bolt)
4a Engagement groove 5 Actuator 7 Plunger 8 Coil spring (biasing member)
9 Bracket 10 Handle support rod (handle support)
10a Through hole 11 Engagement rod (engagement part)
14 Auxiliary electrode 15 Antenna 16, 16a Electrode 17 Communication unit 18 Control unit 19 Proximity detection unit 20 Drive unit 21,22 Back protrusions 21a, 22a Top 21b Notch groove 181 Setting processing unit 182 Authentication unit 183 Bolt control unit 184 Storage unit 201 Handle Main body 202, 202a Antenna board 203 Cover plate B Battery CN connector SW Switching element (power supply control unit)
VL Locking voltage VU Unlocking voltage Vbat, Vsw Power supply voltage W1, W2 Width tw Drive time

Claims (8)

A handle that has a substantially flat flat surface on the front surface and can change its posture between the closed posture and the open posture.
An antenna for short-range wireless communication arranged within the thickness of the handle or on the back surface of the handle,
A bolt that is a latch bolt or a lock bolt that moves back and forth between the locking position and the unlocking position according to the change in the posture of the handle.
A communication unit that performs short-range wireless communication using the antenna,
An authentication unit that performs authentication based on the authentication data received by the communication unit, and
A bolt control unit for switching between prohibition and permission of the advance / retreat of the bolt according to a change in the posture of the handle based on the authentication result by the authentication unit is provided.
The portion of the handle on the front side of the antenna is a certified electric lock made of an insulating material. Electrodes located within the thickness of the handle or on the back of the handle,
A power supply control unit that switches between supplying and shutting off the power supply voltage for operating at least one of the communication unit, the authentication unit, and the volt control unit.
Further provided with a proximity detection unit that detects that the device to be the target of the short-range wireless communication is close to the handle based on the change in the capacitance of the electrode while the power supply voltage is cut off. ,
The portion of the handle on the front surface side of the electrode is made of an insulating material.
The authentication type electric lock according to claim 1, wherein the power supply control unit starts supplying the power supply voltage when the proximity is detected by the proximity detection unit. The electrodes are arranged side by side with the antenna.
The certified electric lock according to claim 2, wherein the capacitance is the capacitance between the antenna and the electrode. Auxiliary electrodes arranged side by side with the electrodes are further provided within the thickness of the handle or on the back surface of the handle.
The portion of the handle on the front surface side of the auxiliary electrode is made of an insulating material.
The certified electric lock according to claim 2, wherein the capacitance is the capacitance between the electrode and the auxiliary electrode. A back protrusion protruding toward the back of the handle,
A claim further comprising a handle support portion that supports the handle so as to be swingable and displaceable about an axis extending in the vicinity of one end of the handle along the surface direction of the flat surface and in a direction orthogonal to the advancing / retreating direction of the bolt. The certified electric lock according to any one of 1 to 4. The bolt is a latch bolt
Further provided with an urging member for urging the latch bolt toward the locking position,
An engaging groove extending in a direction orthogonal to the advancing / retreating direction of the latch bolt is formed on the side surface of the latch bolt.
An engaging portion that engages with the engaging groove is provided near the tip of the back surface protrusion.
The width of the engaging portion in the advancing / retreating direction is smaller than the width of the engaging groove.
The authentication type electric lock according to claim 5, wherein the difference between the width of the engaging portion in the advancing / retreating direction and the width of the engaging groove is larger than the distance between the locking position and the unlocking position. An engaging piece whose posture can be changed between the engaging posture that engages with the back protrusion and the disengaging posture that is disengaged from the back protrusion.
An actuator for changing the posture of the engaging piece between the engaging posture and the disengaging posture is further provided.
The authentication type electric lock according to claim 5 or 6, wherein the bolt control unit switches between prohibition and permission by changing the posture of the engaging piece by the actuator. With a plate arranged in the same plane as the flat surface or substantially parallel to the flat surface,
A display window that penetrates the plate and
It is connected to the engaging piece and moves relative to the plate on the back side of the plate in conjunction with the posture change of the engaging piece, and in at least one of the engaging posture and the disengaging posture, the said The authentication type electric lock according to claim 7, further comprising a display piece located on the back side of the display window.

Images