JP2017095977A - Lock opening/closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To implement a lock opening/closing device for making it possible to easily lock and unlock a door by manual operation in addition to by remote operation.SOLUTION: A lock opening/closing device 10 includes: a thumb turn rotation unit 70 that can be fitted to a thumb turn 40 of a door 41 and rotates the thumb turn 40; and a motor 90 that is driven by remote operation. The lock opening/closing device also includes: a rotation drive mechanism 71 that rotates the thumb turn rotation unit 70 by using power of the motor 90; a manual rotation unit 72 that is fixed on the thumb turn rotation unit 70 and rotates the thumb turn rotation unit 70 by manual operation; and a clutch mechanism 120 capable of intercepting transfer of power between the thumb turn rotation unit 70 and the motor 90 of the rotation drive mechanism 71 in rotating the thumb turn rotation unit 70 by using the manual rotation unit 72.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a lock opening / closing device that locks and unlocks a door provided with a thumb turn by remote control.

  2. Description of the Related Art Conventionally, there is known a lock opening / closing device that operates a thumb turn by remote operation to lock and unlock a door. This lock opening / closing device is attached to a thumb turn portion of a door, drives a motor by remote operation, and transmits the power of the motor using a mechanical transmission mechanism or the like to rotate the thumb turn.

  In addition, since the lock opening and closing device as described above lacks convenience when remote control is always required, the thumb opening is provided on the lock opening and closing device, and the thumb turn can be manually rotated by the user operating the knob. Some have been proposed (see Patent Document 1).

Japanese Patent No. 5686269

  However, when the knob is simply provided with the knob as described above, the thumb turn is interlocked with the driving mechanism such as a motor, so that even if the knob is rotated, the mechanical resistance is large and the knob is easily turned. I can't.

  The present application has been made in view of such a point, and an object of the present application is to provide a lock opening / closing device capable of easily locking and unlocking a door not only remotely but also manually.

  As a result of intensive studies, the present inventors have found that the above problem can be solved by providing a clutch mechanism that cuts off or transmits power between the drive source and the thumb-turn rotating unit in the lock opening and closing device. The invention has been completed.

That is, the present invention includes the following aspects.
(1) A lock opening and closing device for locking and unlocking a door provided with a thumb turn by remote operation, which can be attached to the thumb turn of the door, and rotates by rotating the thumb turn, and driven by remote operation A rotation driving mechanism for rotating the thumb turn rotating unit by power of the drive source, a manual rotating unit fixed to the thumb turn rotating unit and manually rotating the thumb turn rotating unit, and a thumb turn by the manual rotating unit A lock opening and closing device comprising: a clutch mechanism capable of interrupting transmission of power between a drive source of the rotation drive mechanism and the thumb turn rotation unit when rotating the rotation unit.
(2) The lock opening / closing device according to (1), wherein the clutch mechanism is provided between the rotation drive mechanism and the thumb turn rotating unit.
(3) The rotation drive mechanism includes a rotation drive member that can be locked to the thumb turn rotation unit and that can rotate coaxially with the thumb turn rotation unit by power of the drive source, and the clutch mechanism includes the thumb turn. Power is transmitted between the rotation drive mechanism and the thumb-turn rotation unit when the rotation unit and the rotation drive member are locked to each other in the rotation direction, and the rotation when the rotation unit and the rotation drive member are not locked to each other in the rotation direction. The lock opening and closing device according to (2), wherein the lock opening and closing device is configured to cut off transmission of power between the drive mechanism and the thumb turn rotating unit.
(4) The thumb turn rotating part has an arc-shaped groove part centering on the rotation axis, and the rotation driving member is fitted in the groove part and has an arc-shaped convex line part centering on the rotation axis. The ridge portion is movable in the circumferential direction within the groove portion, and the thumb turn rotating portion and the rotation driving member rotate when the ridge portion rotates while pressing the circumferential end surface of the groove. The thumb turn portion and the rotation drive member are locked to each other in the rotation direction when the ridge portion rotates without contacting the circumferential end surface of the groove. The lock opening and closing device according to (3), which is not in a state.
(5) After rotating the rotation drive member and rotating the thumb turn rotation unit so that the convex portion presses the end surface in the circumferential direction of the groove portion, the rotation drive member is rotated in the reverse direction to return to the original position. The lock opening and closing device according to (4), further comprising a control unit that controls the drive source so as to return to the position.
(6) The clutch mechanism is a centrifugal clutch provided between the drive source of the rotational drive mechanism and a transmission mechanism for transmitting the power of the drive source to the thumb turn rotating unit. The lock opening and closing device described.

  According to the present invention, it is possible to realize a lock opening and closing device capable of easily locking and unlocking a door not only remotely but also manually.

It is a schematic diagram which shows the outline of a structure of a lock opening / closing system. It is a schematic diagram which shows the installation position of a lock opening / closing apparatus. It is explanatory drawing of the longitudinal cross-section which shows the internal structure of a lock opening / closing apparatus. It is an exploded view of a thumb turn rotation part, a rotation drive member, and a manual rotation part. It is sectional drawing which shows the groove part of a thumb turn rotation part. It is a bottom view of a thumb turn rotation part. It is a perspective view of a thumb turn rotation part and a rotation drive member. It is a bottom view of a rotation drive member. (A) is explanatory drawing which shows the state of the clutch mechanism at the time of an unlocking state, (b) is explanatory drawing which shows a motion of the clutch mechanism at the time of locking by remote operation. It is explanatory drawing which shows a motion of the clutch mechanism at the time of reversely rotating a rotational drive member and returning to an original position. It is explanatory drawing which shows a motion of the clutch mechanism at the time of unlocking manually. (A) is explanatory drawing which shows the state of the clutch mechanism at the time of a locking state, (b) is explanatory drawing which shows a motion of the clutch mechanism at the time of unlocking by remote operation. It is explanatory drawing which shows a motion of the clutch mechanism at the time of reversely rotating a rotational drive member and returning to an original position. It is explanatory drawing which shows a motion of the clutch mechanism at the time of locking manually. It is explanatory drawing of the longitudinal cross-section which shows the internal structure of the lock opening / closing apparatus which has another clutch mechanism. (A) is explanatory drawing which shows the state by which the transmission of the motive power of the clutch mechanism of FIG. 15 is interrupted | blocked, (b) is explanatory drawing which shows the state in which the motive power of a clutch mechanism is transmitted.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same element and the overlapping description is abbreviate | omitted. Further, the positional relationship such as up, down, left and right is based on the positional relationship shown in the drawings unless otherwise specified. Furthermore, the dimensional ratios in the drawings are not limited to the illustrated ratios. Moreover, the following embodiment is an illustration for explaining the present invention, and the present invention is not limited to this embodiment.

  The lock opening / closing apparatus according to the present embodiment is applied to, for example, a lock opening / closing system 1 shown in FIG.

<Outline of lock opening and closing system 1>
As shown in FIG. 1, the lock opening / closing system 1 includes a lock opening / closing device 10, a terminal 20, and a server 30.

  The lock opening / closing device 10 can be attached to the thumb turn 40 portion of the door 41. The lock opening / closing device 10 is configured to be capable of bidirectional communication with the terminal 20 by wireless communication such as Bluetooth (registered trademark). The lock opening / closing device 10 can lock and unlock the door 41 by rotating the thumb turn 40 by remote control from the terminal 20. The lock opening / closing device 10 can communicate with the server 30 bidirectionally via a network 50 such as the Internet. Details of the configuration of the lock opening and closing device 10 will be described later.

  The terminal 20 is a device for remotely operating the locking and unlocking operation of the door 41 by the lock opening and closing device 10. As the terminal 20, for example, any terminal device capable of data communication with the lock opening / closing device 10 by wireless communication, such as a smartphone, a mobile phone, a personal digital assistant (PDA), a tablet terminal, a personal computer (PC), and a notebook PC, is used. Can do.

  The server 30 is configured by, for example, a computer having high arithmetic processing capability, and a server function is realized by a predetermined server program operating on the computer. The server 30 can perform, for example, authority authentication for remote operation of the lock opening / closing device 10 by the terminal 20.

  When the door 41 is locked and unlocked in the lock opening and closing system 1, for example, when the user operates the terminal 20 to instruct locking or unlocking of the lock opening and closing device 10, the terminal 20 is locked or unlocked by wireless communication. A remote operation command for instructing unlocking is transmitted to the lock opening / closing device 10. When receiving the remote operation command, the lock opening / closing device 10 automatically operates the thumb turn 40 based on the remote operation command to lock or unlock the door 41.

<Configuration of the lock opening / closing device 10>
Next, the configuration of the lock opening / closing device 10 will be described.

  As shown in FIG. 2, the lock opening / closing device 10 can be attached to a thumb turn 40 on the inner side (room side) of the door 41, for example. The lock opening / closing device 10 is detachably attached to the door 41 by a magnet, for example. The lock opening / closing device 10 includes, for example, a thumb turn 40 and a casing 60 that covers the periphery thereof.

  For example, as shown in FIG. 3, the lock opening / closing device 10 includes a housing 60 in which a thumb-turn rotating unit 70 that rotates the thumb-turn 40, a rotation driving mechanism 71 that rotates the thumb-turn rotating unit 70 by the power of a driving source, and a manual operation. A manual rotation unit 72 that rotates the thumb-turn rotation unit 70, a power supply unit 73, a communication unit 74 for communicating with the terminal 20, a control unit 75, and the like are included.

  The thumb-turn rotating unit 70 includes, for example, a substantially cylindrical column 80 and a leg 81 that protrudes rearward from the bottom surface of the column 80 (left side in FIG. 3).

  As shown in FIGS. 3 and 4, the cylindrical portion 80 has, for example, a large-diameter portion 83 on the rear side and a small-diameter portion 84 on the front side (right side in FIG. 3). On the front surface of the large-diameter portion 83, a groove portion 85 into which a convex portion 100 of a rotation driving member 91 described later is fitted is formed. As shown in FIG. 5, the groove 85 is formed in an arc shape centered on the rotation axis of the thumb-turn rotation unit 70. The inner angle of the arc of the groove 85 is formed to be, for example, about 270 ° (3/2 × π (rad)).

  For example, as shown in FIGS. 4 and 6, for example, four leg portions 81 are provided on the same circumference around the rotation axis of the columnar portion 80, and the groove portions having different widths are crossed by the four leg portions 81. It is formed in a shape. The thumb turn rotating part 70 can rotate the thumb turn 40 by holding and rotating the thumb turn 40 between the legs 81.

  As shown in FIGS. 3 and 4, the manual rotation unit 72 is formed in a columnar shape or a disk shape, for example, and is fixed to the front side of the columnar portion 80 of the thumb turn rotation unit 70. As shown in FIGS. 2 and 3, the manual rotation unit 72 is disposed in the opening 60 b provided in the front surface 60 a of the housing 60 and protrudes to the front side of the housing 60. The thumb turn rotating unit 70 can be manually rotated by the user holding and rotating the portion of the manual rotating unit 72 protruding from the housing 60 by hand. The manual rotating unit 72 may have a knob such as a thumb turn.

  As shown in FIG. 3, the rotation drive mechanism 71 includes, for example, a motor 90 as a drive source that is driven by remote operation, and a rotation drive member 91 that is provided on the same axis as the thumb turn rotation unit 70 and can be locked to the thumb turn rotation unit 70. And a transmission mechanism 92 that transmits the power of the motor 90 to the rotation drive member 91.

  The rotation drive member 91 is formed in a ring shape as shown in FIGS. 4 and 7, and is fitted into the small diameter portion 84 of the columnar portion 80 of the thumb turn rotation portion 70. The rotation drive member 91 has teeth on the outer peripheral surface and constitutes a gear. As shown in FIG. 8, the rotation driving member 91 includes an arcuate convex portion 100 centered on the rotation axis on the bottom surface side. The inner angle of the arc of the ridge portion 100 is formed, for example, at about 180 °. As shown in FIG. 7, the convex portion 100 is fitted in the arc-shaped groove 85 of the thumb turn rotating portion 70, and thus the rotation driving member 91 can be locked to the thumb turn rotating portion 70 in the rotation direction. .

  As shown in FIG. 3, the transmission mechanism 92 is composed of, for example, a plurality of gears. For example, the transmission mechanism 92 includes a gear 110 attached to the shaft of the motor 90 and a gear 111 that meshes with the gear of the rotation drive member 91. When the motor 90 is driven, the gears 110 and 111 are rotated, and the rotation driving member 91 is rotated.

  The power supply unit 73 includes one or a plurality of batteries. The power supply unit 73 can supply power to the communication unit 74, the control unit 75, the motor 90, and the like.

  The communication unit 74 has a communication antenna. The communication unit 74 can receive, for example, a remote operation command for instructing locking and unlocking of the door 41 from the terminal 20.

  The control unit 75 includes a processor and a memory that stores a program executed by the processor. The control unit 75 executes predetermined processing based on the remote operation command received by the communication unit 74. That is, the control unit 75 controls the operation of the motor 90 based on the remote operation command, for example, the rotation angle and the rotation direction, thereby rotating the thumb turn rotating unit 70 and rotating the thumb turn 40 in the locking or unlocking direction. Can be made.

<Configuration of clutch mechanism>
As shown in FIGS. 3 and 7, the lock opening / closing device 10 according to the present embodiment is provided between the motor 90 of the rotation drive mechanism 71 and the thumb-turn rotating unit 70 when the thumb-turn rotating unit 70 is rotated by the manual rotating unit 72. The clutch mechanism 120 is capable of interrupting transmission of the power.

  The clutch mechanism 120 is provided between, for example, the rotation drive mechanism 71 and the thumb turn rotating unit 70. That is, the thumb turn rotating portion 70 has an arcuate groove 85 centered on the rotation axis, and the rotation drive member 91 has an arcuate protrusion 100 centered on the rotation axis. The part 100 is fitted in the groove part 85 and is movable in the circumferential direction in the groove part 85. For example, as shown in FIG. 5, the inner angle of the arc of the groove 85 is formed to be about 270 °, for example, and the arc-shaped inner angle of the convex portion 100 is larger than the length of the arc of the groove 85 as shown in FIG. 8. As shown in FIG. 9A, there is a play 130 of about 90 ° between the groove 85 and the ridge portion 100 as shown in FIG. Therefore, when the ridge portion 100 presses and rotates the end surface 85a or the end surface 85b in the circumferential direction of the groove portion 85, the thumb turn rotating portion 70 and the rotation driving member 91 are locked to each other to transmit power. On the other hand, when the ridge portion 100 rotates in the play 130 without contacting the circumferential end faces 85a and 85b of the groove portion 85, the thumb-turn rotating portion 70 and the rotation driving member 91 are not locked to each other and power is transmitted. Blocked.

<Operation of the lock opening / closing device 10>
Here, the operation of the lock opening and closing device 10 having the above configuration will be described.

  First, the lock opening / closing device 10 is attached to the thumb turn 40 of the door 41 as shown in FIG. At this time, the thumb turn 40 is held by the leg portion 81 of the thumb turn rotating portion 70.

  When the door 41 is locked by remote control, the motor 90 is operated under the control of the control unit 75, and the rotational drive member 91 is rotated about 90 ° clockwise via the transmission mechanism 92 by the power of the motor 90 (the thumb turn 40). Rotating angle). At this time, as shown in FIGS. 9A and 9B, the rotation drive member 91 and the thumb turn rotating portion 70 are locked in the rotation direction, and the ridge portion 100 pushes the end face 85 a of the groove 85, so that the thumb turn rotating portion 70. Rotate 90 ° to the right. As a result, the thumb turn 40 rotates 90 ° and the door 41 is locked.

  Next, as shown in FIG. 10, the ridge portion 100 is rotated 90 ° counterclockwise by the power of the motor 90 and returned to the original position. The reverse rotation of the ridge portion 100 allows a space (play 130) for manually rotating (unlocking) the thumb turn rotation portion 70 counterclockwise without pushing the ridge portion 100. Then, as shown in FIG. 11, when the user rotates the manual rotation portion 72 by 90 ° counterclockwise, the ridge portion 100 is not in contact with the end portion 85 b of the groove portion 85, and the rotation drive member 91 and the thumb turn rotation portion 70. Are not locked in the rotational direction, so that only the thumb turn rotating part 70 rotates counterclockwise by about 90 °. As a result, the thumb turn 40 rotates 90 ° and the door 41 is unlocked.

  Next, when unlocking the door 41 by remote operation, the motor 90 is operated by the control of the control unit 75, and the rotational driving member 91 is rotated 90 ° counterclockwise via the transmission mechanism 92 by the power of the motor 90. Rotate about (the angle at which the thumb turn 40 is unlocked). At this time, as shown in FIGS. 12A and 12B, the rotation drive member 91 and the thumb turn rotating portion 70 are locked in the rotation direction, and the ridge portion 100 pushes the end face 85 b of the groove portion 85, so that the thumb turn rotating portion 70. Rotate 90 ° counterclockwise. As a result, the thumb turn 40 rotates 90 ° and the door 41 is unlocked.

  Next, as shown in FIG. 13, the ridge portion 100 is rotated 90 ° in the clockwise direction in the reverse direction by the power of the motor 90 and returned to the original position. The reverse rotation of the ridge portion 100 allows a space (play 130) for manually rotating (locking) the thumb turn rotation portion 70 clockwise without pushing the ridge portion 100. Then, as shown in FIG. 14, when the user rotates the manual rotation portion 72 by 90 ° clockwise, the convex portion 100 is not in contact with the end portion 85 a of the groove portion 85, and the rotation drive member 91 and the thumb turn rotation portion 70. Are not locked in the rotational direction, so that only the thumb turn rotating part 70 rotates about 90 ° clockwise. As a result, the thumb turn 40 rotates 90 ° and the door 41 is locked.

  According to the present embodiment, the lock opening / closing device 10 can cut off the transmission of power between the motor 90 of the rotation drive mechanism 71 and the thumb-turn rotating unit 70 when the manual-rotating unit 72 rotates the thumb-turn rotating unit 70. Since the clutch mechanism 120 is provided, the mechanical resistance when the manual rotating unit 72 is manually moved can be reduced. Therefore, the door 41 can be easily locked and unlocked not only remotely but also manually.

  Since the clutch mechanism 120 is provided between the rotation drive mechanism 71 and the thumb turn rotating unit 70, the power is cut off at a position close to the manual rotating unit 72, and the mechanical resistance when moving the manual rotating unit 72 is effective. Can be reduced.

  In addition, since the clutch mechanism 120 is realized by using the groove 85 provided in the thumb turn rotating unit 70 and the convex strip 100 provided in the rotation driving member 91, the clutch mechanism can be realized by a relatively simple mechanism. .

  After the control unit 75 rotates the rotation drive member 91 and rotates the thumb turn rotation unit 70 so that the protruding strip portion 100 presses the circumferential end faces 85a and 85b of the groove portion 85, the rotation drive member 91 is moved in the reverse direction. Since the motor 90 is controlled to rotate and return to the original position, the operation of the clutch mechanism 120 is suitably performed.

  In the present embodiment, the clutch mechanism 120 is realized by using the groove portion 85 of the thumb turn rotating portion 70 and the convex portion 100 of the rotation driving member 91. However, the clutch mechanism includes the thumb turn rotating portion 70 and the rotation driving member 91. Power is transmitted between the rotation drive mechanism 71 and the thumb turn rotating unit 70 when locked in the rotation direction, and the rotation drive mechanism 71 and the thumb turn rotating unit 70 when not locked together in the rotation direction. As long as it is configured to cut off the transmission of power between the two, it may be realized in other configurations.

  The clutch mechanism 120 is provided between the rotation drive mechanism 71 and the thumb turn rotating unit 70, but is provided at another portion between the motor 90 and the thumb turn rotating unit 70 as a drive source. Also good.

  For example, as shown in FIG. 15, the clutch mechanism 130 may be provided between the motor 90 and the transmission mechanism 92. In such a case, the clutch mechanism 130 may be a centrifugal clutch provided between the motor 90 and the transmission mechanism 92. For example, as shown in FIGS. 16A and 16B, the clutch mechanism 130 rotates integrally with the rotating shaft of the motor 90, and when a centrifugal force is applied, the clutch shoe 140 spreads outward in the radial direction. It has a ring-shaped clutch bell 141 that rotates together with the clutch shoe 140 when the shoe 140 spreads outward. The clutch bell 141 is fixed to the gear 110 of the transmission mechanism 92. In the case of this example, the groove portion 85 of the thumb turn rotating portion 70 and the protruding strip portion 100 of the rotation driving member 91 may be fitted with no play.

  In such a case, when the door 41 is locked and unlocked by remote control, the motor 90 is operated as shown in FIG. 16B, and the clutch shoe 140 spreads due to the centrifugal force of the rotation of the motor 90, and the clutch bell. 141 is fixed to the inner peripheral surface. As a result, the power of the motor 90 is transmitted to the thumb turn rotating unit 70 through the clutch mechanism 130 and the transmission mechanism 92, and the thumb turn rotating unit 70 rotates the thumb turn 40.

  On the other hand, since the motor 90 does not rotate when the door 41 is manually locked and unlocked, the clutch shoe 140 does not spread outward as shown in FIG. The motor 90 and the transmission mechanism 92 are not mechanically connected. Therefore, the user can rotate the manual rotation unit 72 with a weak force to rotate the thumb turn rotation unit 70, and can easily lock and unlock the door 41 not only remotely but also manually. The clutch mechanism 120 and the clutch mechanism 130 may be used in combination.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the idea described in the claims, and these naturally belong to the technical scope of the present invention. It is understood.

  For example, the configuration of the clutch mechanism of the lock opening / closing device 10 is not limited to that of the above embodiment, and other general techniques may be used. Further, the overall shape and configuration of the lock opening / closing device 10 is not limited to that of the above embodiment. The configuration of the thumb turn rotation unit 70, the rotation drive mechanism 71, the manual rotation unit 72, and the like of the lock opening / closing device 10 is not limited to this. The configuration of the lock opening / closing system 1 including the lock opening / closing device 10 is not limited to this.

  INDUSTRIAL APPLICABILITY The present invention is useful in realizing a lock opening / closing device that can easily lock and unlock a door not only remotely but also manually.

DESCRIPTION OF SYMBOLS 1 Lock opening / closing system 10 Lock opening / closing apparatus 40 Thumb turn 41 Door 70 Thumb turn rotation part 71 Rotation drive mechanism 72 Manual rotation part 85 Groove part 90 Motor 91 Rotation drive member 100 Convex part 120, 130 Clutch mechanism

That is, the present invention includes the following aspects.
(1) A lock opening and closing device for locking and unlocking a door provided with a thumb turn by remote operation, which can be attached to the thumb turn of the door, and rotates by rotating the thumb turn, and driven by remote operation A rotation driving mechanism for rotating the thumb turn rotating unit by power of the drive source, a manual rotating unit fixed to the thumb turn rotating unit and manually rotating the thumb turn rotating unit, and a thumb turn by the manual rotating unit have a, a clutch mechanism capable of interrupting the transmission of power between the driving source and the thumb rotating part of the rotary drive mechanism when rotating the rotary part, the thumb-turn rotary unit, the lock-off device door And four leg portions that sandwich and hold the thumb turn when attached to the thumb turn, and the thumb turn is sandwiched by the four leg portions. The cross-shaped groove is formed, the lock-off device.
(2) The lock opening / closing device according to (1), wherein the clutch mechanism is provided between the rotation drive mechanism and the thumb turn rotating unit.
(3) The rotation drive mechanism includes a rotation drive member that can be locked to the thumb turn rotation unit and that can rotate coaxially with the thumb turn rotation unit by power of the drive source, and the clutch mechanism includes the thumb turn. Power is transmitted between the rotation drive mechanism and the thumb-turn rotation unit when the rotation unit and the rotation drive member are locked to each other in the rotation direction, and the rotation when the rotation unit and the rotation drive member are not locked to each other in the rotation direction. The lock opening and closing device according to (2), wherein the lock opening and closing device is configured to cut off transmission of power between the drive mechanism and the thumb turn rotating unit.
(4) The thumb turn rotating part has an arc-shaped groove part centering on the rotation axis, and the rotation driving member is fitted in the groove part and has an arc-shaped convex line part centering on the rotation axis. The ridge portion is movable in the circumferential direction within the groove portion, and the thumb turn rotating portion and the rotation driving member rotate when the ridge portion rotates while pressing the circumferential end surface of the groove. The thumb turn portion and the rotation drive member are locked to each other in the rotation direction when the ridge portion rotates without contacting the circumferential end surface of the groove. The lock opening and closing device according to (3), which is not in a state.
(5) After rotating the rotation drive member and rotating the thumb turn rotation unit so that the convex portion presses the end surface in the circumferential direction of the groove portion, the rotation drive member is rotated in the reverse direction to return to the original position. The lock opening and closing device according to (4), further comprising a control unit that controls the drive source so as to return to the position.
(6) The clutch mechanism is a centrifugal clutch provided between the drive source of the rotational drive mechanism and a transmission mechanism for transmitting the power of the drive source to the thumb turn rotating unit. The lock opening and closing device described.

Claims (6)

A lock opening and closing device for locking and unlocking a door provided with a thumb turn by remote operation,
A thumb turn rotating part that can be attached to the thumb turn of the door and rotates the thumb turn;
A rotation drive mechanism that has a drive source that is driven by remote operation, and that rotates the thumb-turn rotation unit by the power of the drive source;
A manual rotation unit fixed to the thumb turn rotation unit and manually rotating the thumb turn rotation unit;
A lock opening and closing device comprising: a clutch mechanism capable of interrupting transmission of power between a drive source of the rotation drive mechanism and the thumb turn rotation unit when the thumb turn rotation unit is rotated by the manual rotation unit.   The lock opening and closing device according to claim 1, wherein the clutch mechanism is provided between the rotation driving mechanism and the thumb turn rotating unit. The rotation drive mechanism has a rotation drive member that can be locked to the thumb turn rotation unit and can be rotated coaxially with the thumb turn rotation unit by the power of the drive source,
The clutch mechanism transmits power between the rotation drive mechanism and the thumb turn rotation unit when the thumb turn rotation unit and the rotation drive member are locked to each other in the rotation direction, and locks each other in the rotation direction. The lock opening and closing device according to claim 2, wherein the lock opening and closing device is configured to cut off transmission of power between the rotation drive mechanism and the thumb-turn rotation unit when the rotation is not performed. The thumb turn rotating part has an arc-shaped groove part around the rotation axis,
The rotation driving member is fitted in the groove, and has an arc-shaped protruding portion centered on the rotation axis;
The ridge is movable in the circumferential direction within the groove,
When the ridge portion rotates while pressing the circumferential end surface of the groove, the thumb turn rotating portion and the rotation drive member are locked to each other in the rotation direction, and the ridge portion of the groove is The lock opening and closing device according to claim 3, wherein the thumb-turn rotation unit and the rotation drive member are not locked to each other in the rotation direction when rotating without abutting against a circumferential end surface.   After rotating the rotary drive member and rotating the thumb turn rotary unit so that the convex strip presses the circumferential end surface of the groove, the rotary drive member is rotated in the reverse direction to return to the original position. The lock opening and closing device according to claim 4, further comprising a control unit that controls the drive source.   2. The lock according to claim 1, wherein the clutch mechanism is a centrifugal clutch provided between a drive source of the rotation drive mechanism and a transmission mechanism for transmitting power of the drive source to the thumb turn rotating unit. Switchgear.

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