JP6415214B2 - Door opening and closing device in toilet booth - Google Patents

Description

  The present invention relates to a door opening and closing device in a toilet booth.

  As a hinge for supporting the door of the toilet booth, for example, a gravity hinge and a spring hinge described in Patent Document 1 or Patent Document 2 are known.

  Here, in the gravity hinge, when the weight of the door acts on the inclined cam surface, the door is returned to the open position or the closed position by the cam action of the inclined cam surface. On the other hand, in the spring hinge, the door is returned and rotated toward the open position or the closed position by the elastic force of the torsion coil spring that urges the pair of hinge pieces in opposite directions.

  As described above, in a gravity hinge or a spring hinge, since it is a hinge with a return movement function having a function of automatically returning the door to the open position or the closed position, the door can be held in the open position or the closed position. One operation of opening the door and closing the door can be made unnecessary. For this reason, operativity can be improved by employ | adopting as the opening-and-closing support of the door in a toilet booth.

Japanese Utility Model Publication No. 60-40780 Japanese Utility Model Publication No. 61-137766

  By the way, by opening and closing the door of the toilet booth by the hinge with a return movement function composed of the gravity hinge and the spring hinge described in Patent Documents 1 and 2, one of the door opening operation and closing operation is performed. However, it is necessary to open or close the door by touching the door, which is a sanitary problem.

  An object of the present invention is to provide a hygienic door opening / closing device capable of automatically opening and closing a door of a toilet booth without touching the door.

  In order to solve the above-described problems, in the present invention, a toilet booth in which a door for opening and closing the entrance / exit of a toilet booth is supported by a hinge with a return motion function having a function of automatically returning to an open position or a closed position. In the door opening and closing device, a door rotation device is provided for rotating the door in a direction opposite to the direction of the return operation by the hinge with the return motion function, and the door rotation device is provided in the toilet booth. An electric motor that is activated when a closing sensor or a door opening sensor is turned on by a booth user, an input gear that is rotated by the rotor shaft of the electric motor, and an output gear that transmits torque to the opening / closing center of the door And a gear mechanism for rotating the door by transmitting rotational torque from the input gear to the output gear. Is from the rotor shaft to that adopted the configuration in which a torque transmission interrupting mechanism for interrupting the torque transmission from the door side to the torque transfer system to the output gear of the gear mechanism to the electric motor side.

  Here, the hinge with a return movement function refers to a gravity hinge or a spring hinge. When the door is held in the open position by the hinge with the return movement function, if you enter the toilet booth and wave your hand over the door closing sensor, the sensor turns on and the electric motor in the door rotation device starts Then, the rotation of the rotor of the electric motor is transmitted to the door through the gear mechanism, and the door is closed.

  In addition, when the electric motor is stopped after the door is closed, a torque transmission cutoff mechanism that cuts off torque transmission from the door side to the electric motor side is incorporated into the torque transmission system from the rotor shaft of the electric motor to the output gear of the gear mechanism. Therefore, the door is automatically returned to the open position by the hinge with the return movement function. For this reason, the door can be opened and closed without touching the door.

  Here, the torque transmission cutoff mechanism is provided at the shaft end portion of the rotor shaft of the electric motor, and has a drive disk in which a cutout portion having a size corresponding to the opening / closing angle of the door is formed on the outer periphery, and coaxial with the rotor shaft. And an input shaft that supports the input gear, is attached to the shaft end of the input shaft and faces the drive disk, and has an arc-shaped cutout portion on the outer peripheral portion with a size corresponding to the opening / closing angle of the door. A formed driven disk; a pressing pin protruding from an outer peripheral portion of a surface of the drive disk facing the driven disk and inserted into a cutout portion of the driven disk; and a cutout portion inserted into the cutout portion of the drive disk. The rotation angle of the drive disk may be composed of a fixed pin that restricts the rotation angle of the drive disk to a size corresponding to the opening / closing angle of the door.

  In the adoption of the torque transmission cutoff mechanism as described above, when the electric motor is driven, the drive disk rotates, and the pressing pin provided on the drive disk connects one end of the notch provided on the driven disk. The driven disk is rotated in the same direction as the drive disk by the pressing. The rotation of the driven disk is transmitted to the door via the gear mechanism, and the door rotates in the closing direction.

  When the electric motor is reversed in the closed state of the door, the drive disk returns to a position where one end of the notch formed in the drive disk contacts the fixed pin, and the notch formed in the pressing pin and the driven disk. A play in the rotational direction corresponding to the opening / closing angle of the door is formed between one end portions of the portion. By forming the play, torque transmission from the door side to the electric motor side can be cut off, and the door can be returned to the open position by the hinge with a return function.

  Also, as a torque transmission cutoff mechanism, an input gear is supported, an input shaft connected to the shaft end portion of the rotor shaft of the electric motor and rotating together with the rotor shaft, and one end portion supported rotatably about the input shaft An idle gear that is supported by the other end portion of the gear arm and is constantly meshed with the input gear and swings toward the outer periphery of the output gear when the input gear is rotated by driving the electric motor. You may employ | adopt what consists of.

  In the adoption of the torque transmission cutoff mechanism as described above, when the electric motor is driven, the idle gear meshes with the output gear by the rotation of the input gear, the rotation of the input gear is transmitted to the output gear via the idle gear, and the door is It is turned in the closing direction.

  When the electric motor is stopped while the door is closed, the door is rotated toward the open position by the hinge with a return motion function, and at that time, the pressing force is applied from the output gear to the idle gear, and the pressing force As a result, the idle gear swings away from the output gear to disengage the output gear, and torque transmission from the door to the electric motor side is interrupted. For this reason, the door can be returned to the open position by the return turning force of the hinge with the return movement function.

  In the door opening and closing device according to the present invention, a closed position detection sensor that outputs a detection signal when the door is closed is provided at the closed position of the door, and the door is opened by the detection signal output from the closed position detection sensor. By providing a lock device that locks in the closed position and unlocks the door when the door opening sensor is turned on, the door can be automatically locked when the door is closed.

  In addition, when the hand is swung over the door opening sensor and the sensor is turned on, the lock device is unlocked, so the door can be locked and unlocked without touching the lock device. is there.

  The lock device may be a slide latch device in which a slide latch that is slidably supported with respect to the inner surface of the door front side of the door is slid by a latch driving device. As a latch driving device in the slide latch device, a rotary solenoid and a lever having one end fixed to the rotary shaft of the rotary solenoid and a long hole into which a pin provided in the slide latch is inserted at the other end Can be used.

  The lock device uses an electric motor or a rotary solenoid as a drive source, and the lock lever is disengaged from the engagement position where the tip of the lock lever faces the door-side inner surface of the door and the position opposite the door-side inner surface. It may be composed of a striking lock that is swung between positions.

  In the present invention, as described above, when the hand is placed on the sensor provided in the toilet booth and the switch is turned on, the door rotation device is activated, and the door is rotated against the return operation force by the hinge with the return operation function. In order to drive, a door can be opened and closed automatically by both a door rotation apparatus and a hinge with a return movement function. For this reason, a manual opening / closing operation is not required, and the door can be opened / closed hygienically.

The top view which shows embodiment of the door opening / closing apparatus in the toilet booth which concerns on this invention 1 is a plan view of the door opening / closing device shown in FIG. Sectional view along line III-III in FIG. Sectional view along line IV-IV in FIG. Sectional view along line VV in FIG. Sectional view along line VI-VI in FIG. Sectional view showing the operating state of the torque transmission cutoff mechanism Sectional view showing the torque transmission cutoff state of the torque transmission cutoff mechanism Partially cutaway plan view showing the closed state of the door Cross section of locking device 10 is a longitudinal sectional view of FIG. Sectional drawing along the XII-XII line of FIG. Vertical sectional view showing another example of torque transmission cutoff mechanism Cross section of FIG. Sectional drawing which shows the torque transmission cutoff state of the torque transmission cutoff mechanism shown in FIG. Longitudinal sectional view showing another example of gear mechanism Cross-sectional view of FIG. The perspective view which shows the other example of a locking device

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, an entrance 12 is provided in the front wall 11 of the toilet booth 10, and the entrance 12 is opened and closed by a door 13.

In the toilet booth 10, a Western-style toilet 14 is installed. Moreover, the control box B attached to the toilet booth 10, is provided a motion sensor S ₁ for detecting the presence or absence of a person in the control box B. Furthermore, the toilet booth 10, is provided a door closed sensor S ₂ and a door opening sensor S _3.

  As shown in FIG. 5, the door 13 that opens and closes the doorway 12 is supported by a hinge 20 with a return movement function so as to be freely opened and closed. The hinge 20 with the return movement function is a gravity hinge. The gravity hinge 20 includes an upper hinge 21 that supports an upper part of the door 13 and a lower hinge 28 that supports a lower part of the door 13. The upper hinge 21 includes a frame-side hinge member 22 and a door-side hinge member 25. And formed.

  The frame side hinge member 22 has a hinge pin 24 projecting from the end of the L-shaped bracket 23. The frame-side hinge member 22 is attached so that the bracket 23 is screwed to the upper part of one side surface of the doorway 12 so that the hinge pin 24 faces downward.

  On the other hand, the door-side hinge member 25 is provided with a mounting plate 27 at the end of a guide tube 26 that can slide along the hinge pin 24. The door-side hinge member 25 has a guide cylinder 26 embedded in the upper portion of the door 13, and a mounting plate 27 abutted on the upper surface of the door 13 is screwed to the door 13. As a result of the attachment, the door 13 is supported so as to be swingable about the hinge pin 24 and is also supported to be movable up and down.

  The lower hinge 28 includes a frame side hinge member 29 and a door side hinge member 34. The frame-side hinge member 29 has a hinge pin 31 projecting from the end of the L-shaped bracket 30, and an inclined surface 33 is provided at the end of the cam cylinder 32 that is fitted to the hinge pin 31 and is prevented from rotating. The frame-side hinge member 29 is attached so that the hinge pin 31 faces upward by screwing the bracket 30 to the lower part of one side surface of the doorway 12.

  The door-side hinge member 34 incorporates a cam cylinder 36 into a flanged cylinder 35 that can be fitted to the cam cylinder 32 of the frame-side hinge member 29 to prevent rotation, and is inclined at the end of the cam cylinder 36. A surface 37 is provided. The door side hinge member 34 has a flanged cylinder 35 fitted into the cam cylinder 32 of the frame side hinge member 29 embedded in the lower portion of the door 13 and a flange 35a abutted against the lower surface of the door 13. It is set to be screwed to the door 13.

  At this time, the upper hinge 21 and the lower hinge 28 are mounted so that the hinge pins 24 and 31 are coaxially arranged, and by the mounting, the door 13 is rotatable about the hinge pins 24 and 31 and is moved up and down. Possible support. Further, the door 13 is an openable and closable support that returns to the open position shown in FIG. 1 by its own weight by the cam action of the inclined surfaces 33 and 37 formed on the cam cylinders 32 and 36.

  Instead of the above-described gravity hinge 20, the door 13 may be supported by a pair of spring hinges so that the door 13 can be opened and closed, and the door 13 can be opened and closed to return to the open position.

  As shown in FIGS. 2 to 4, in the toilet booth 10, the door 13 is rotated toward the closed position against the return turning force of the gravity hinge 20 on the upper end of the hanging side end portion of the door 13. A door rotation device 40 is provided.

  The door rotation device 40 includes an electric motor 41 and a gear mechanism 50 that transmits torque of the rotation of the rotor shaft 42 of the electric motor 41 to the opening / closing central axis of the door 13.

  The electric motor 41 is incorporated in the housing 43. As shown in FIGS. 3 and 6, the housing 43 has a rectangular tube shape, and as shown in FIG. 4, a gear support bracket 44 and a motor support bracket 45 are provided from the upper portion on the inner upper portion thereof. A support bracket 45 is attached to a base plate 46 attached to the inner surface of the front wall 11.

As shown in FIGS. 3 and 4, the electric motor 41 is supported by the lower surfaces of the lower plate bodies 45 b of the plate bodies 45 a and 45 b that are opposed to each other on the upper and lower sides of the motor support bracket 45, and the rotor shaft 42 faces upward. . The electric motor 41 is activated and the door closed sensor S ₂ which is provided in the toilet booth 10 in is turned on by the waving of the hand of the toilet user.

The electric motor 41 is the closed position detection sensor S ₄ shown in Figure 1 is stopped to detect the closing of the door 13 the door 13 is closed, after a predetermined time, so as to reverse. “A” shown in the figure indicates a detection piece for operating the closed position detection sensor S ₄ .

  As shown in FIGS. 2 to 4, the gear mechanism 50 includes an input gear 51, an idle gear 52 that meshes with the input gear 51, and an output gear 53 that meshes with the idle gear 52.

  The input gear 51 is coaxially disposed with the rotor shaft 42 of the electric motor 41, and both ends thereof are supported by an input shaft 54 that is rotatably supported by upper and lower plate bodies 44 a and 44 b of the gear support bracket 44.

  The idle gear 52 is supported rotatably about a gear shaft 55 supported at both ends by upper and lower plates 44 a and 44 b of the gear support bracket 44. Further, the output gear 53 is fitted to the hinge pin 24, is fixed to the mounting plate 27 of the door side hinge member 25 in the upper hinge 21, and is rotatable about the hinge pin 24.

  As shown in FIGS. 3, 4 and 6, the rotation of the rotor shaft 42 of the electric motor 41 is transmitted to the input shaft 54 between the rotor shaft 42 and the input shaft 54 of the electric motor 41. A torque transmission cutoff mechanism 60 that cuts off torque transmission from the rotor to the rotor shaft 42 side is provided.

  The torque transmission cutoff mechanism 60 includes a drive disk 61 provided at the shaft end portion of the rotor shaft 42 of the electric motor 41, and a driven disk 62 attached to the shaft end portion of the input shaft 54 and facing the drive disk 61 vertically. A pressing pin 64 that protrudes from the outer periphery of the drive disk 61 and is inserted into a notch 63 formed in the outer periphery of the driven disk 62, and a lower plate 45b of the motor support bracket 45. It consists of a fixed pin 66 inserted into a notch 65 formed on the outer periphery of the drive disk 61.

  Here, the notch 65 formed on the outer periphery of the drive disk 61 and the notch 63 formed on the outer periphery of the driven disk 62 have a size corresponding to the opening / closing angle of the door 13.

  In the torque transmission blocking mechanism 60, the pressing pin 64 is brought into contact with one end portion in the circumferential direction of the notch 63 formed in the driven disk 62 to transmit the rotation of the rotor shaft 42 to the input shaft 54. Is brought into contact with the other end of the notch 63 in the circumferential direction, and a play is provided between the pressing pin 64 and one end of the notch 63 in the circumferential direction. Torque transmission to the side is cut off.

As shown in FIG. 1, a lock device 70 that locks the door 13 when the closing position detection sensor S <b> ₄ detects the closing of the door 13 is provided on the inner surface of the front door 11 side portion of the front wall 11. .

  As shown in FIGS. 9 to 12, the lock device 70 includes a slide latch 71 that is slidably supported in the horizontal direction with respect to the door-side inner surface of the door 13, and a latch drive device 73 that slides the slide latch 71. It consists of.

  The slide latch 71 is formed of a U-shaped cross section having an inward guide piece provided on the side edges of a pair of opposing plates. The slide latch 71 is slidably supported along a latch guide 72 mounted horizontally on the inner surface of the door door side of the front wall 11, and the front end of the slide latch 71 is movable forward and backward with respect to the door inner surface of the door 13. It is said that.

  The latch drive device 73 fixes one end portion of a lever 76 to the rotating shaft 75 of the rotary solenoid 74, and a pin provided at the rear end portion of the slide latch 71 in a long hole 77 formed in the other end portion of the lever 76. 78 is inserted, and the lever 76 is swung by a set angle by forward and reverse rotation of the rotary shaft 75 of the rotary solenoid 74, so that the slide latch 71 is moved forward and backward with respect to the door side inner surface of the door 13.

  Here, the rotary solenoid 74 is supported by a support frame 79 fixed to the inner surface of the front door 11 on the side of the door door, and the support frame 79 has a pair of protrusions that regulate the swing angle of the lever 76. Portions 80a and 80b are provided.

Further, the side plate inner surface of the support frame 79 and a case 81 for covering the rear end portion of the sliding latch 71 door lock sensor S ₅ consisting of a light emitting element and a light receiving element is provided. The door lock detection sensor S <b> ₅ is turned on and off by a pin 78 provided on the slide latch 71.

The opening and closing device of a door shown in the embodiment consists of the structure described above, as shown in FIG. 1, enters the toilet booth 10 in a state where the door 13 is open, the brandishing hand door closed sensor S ₂ door closing sensor S ₂ is turned on, the rotor shaft 42 to start the electric motor 41 shown in FIGS. 3 and 4 are rotated.

  When the rotor shaft 42 rotates, the drive disk 61 fixed to the rotor shaft 42 rotates together, and the pressing pin 64 shown in FIG. 6 provided on the drive disk 61 is formed on the notch 63 formed in the driven disk 62. Press one end. Due to the pressing, the driven disk 62 and the input shaft 54 rotate in the same direction as the drive disk 61.

  As shown in FIG. 3, since the input gear 51 is attached to the input shaft 54, the input gear 51 rotates together with the input shaft 54, and the rotation of the input gear 51 is transmitted to the output gear 53 via the idle gear 52. Communicated.

  At this time, since the output gear 53 is fitted to the hinge pin 24 of the upper hinge 21 and fixed to the mounting plate 27 of the door side hinge member 25, the door 13 is rotated by the rotation of the output gear 53 so that the door 13 is shown in FIG. 21 swings in the closing direction around the hinge pin 24 of the lower hinge 28 and the hinge pin 31 of the lower hinge 28.

  Further, as the door 13 swings in the closing direction, the cam cylinder 36 of the door side hinge member 34 in the lower hinge 28 rotates relative to the cam cylinder 32 of the frame side hinge member 29, and the cam cylinder 32. The door 13 is raised while rotating by the cam action of the inclined surfaces 33 and 37 formed on the opposed surfaces of 36, 36, a gap is formed between the inclined surfaces 33 and 37, and the door 13 is opened in the opening direction by its own weight. Return power is applied.

7 shows a state where the door 13 is closed, the electric motor 41 the closed position detection sensor S ₄ shown in FIG. 1 is operated by the closing of the door 13 is stopped, the drive disk 61 and the driven disk 62 in FIG. The state shown in FIG. Further, the rotary solenoid 74 of the lock device 70 shown in FIG. As the lever 76 swings, the slide latch 71 slides toward the door-side inner surface of the door 13 so that the front end faces the door-side inner surface of the door 13 and locks the door 13 in the closed position.

When the door 13 is locked, the door lock sensor S ₅ is actuated by a pin 78, indicator lights 15 provided outside of the front wall 11 of Figure 1 to display that it is in use.

Further, the door lock sensor S ₅ is actuated, the electric motor 41 is reversed, the drive disk 61 is returned to the standby position rotates relative to the driven disc 62, as shown in FIG. 8, the pressing pin 64 A rotation direction play that allows the door 13 to swing in the opening direction is formed between the other ends of the notch 63 formed in the driven disk 62.

In a state where the door 13 is locked in the closed position by a locking device 70, when brandishing hand door opening sensor S ₃ shown in FIG. 1, the slide latch 71 is rotary solenoid 74 is operated as shown in FIG. 10, the distal end portion Is moved backward to a position where it is retracted from the door side inner surface of the door 13. The door 13 is unlocked by the backward movement.

  At this time, the torque transmission cutoff mechanism 60 in the gear mechanism 50 has a rotational play that allows the door 13 to swing in the opening direction between the pressing pin 64 and the other end of the notch 63 formed in the driven disk 62. On the other hand, the lower hinge 28 of the gravity hinge 20 is in a state in which a gap is formed between the inclined surfaces 33 and 37 formed on the opposing surfaces of the cam cylinders 32 and 36. Since the door 13 is in a state where the return force in the opening direction is loaded by its own weight, the door 13 swings in the opening direction by its own weight when the lock is released, and as shown in FIG. Become.

Thus, when brandishing hand door closure sensor S _2, it is held in the locked state the door 13 is closed, the brandishing hand door opening sensor S _3, swinging in the opening direction the door 13 by its own weight Since the door 13 is in the open state, it is not necessary to touch the door 13 when the door 13 is opened and closed, which is extremely hygienic.

  In the embodiment shown in FIGS. 3 and 6, as a torque transmission blocking mechanism 60 in the gear mechanism 50, a notch 63 provided on the outer periphery of the driven disk 62 is provided with a pressing pin 64 protruding from the outer periphery of the drive disk 61. The play is provided in the rotational direction corresponding to the opening angle of the door 13 between the pressing pin 64 and the other end of the notch 63, but the torque transmission blocking mechanism 60 is not limited to this. Absent.

  13 to 15 show another example of the torque transmission cutoff mechanism 60. FIG. In the torque transmission cutoff mechanism 60 shown in this example, the shaft end portion of the input shaft 54 is flange-coupled to the rotor shaft 42 of the electric motor 41, and one end portion is rotatably supported around the input shaft 54. 90, the lower end portion of the gear shaft 91 is supported by the other end portion of the gear shaft 91, and the upper end portion of the gear shaft 91 is inserted into an arc-shaped elongated hole 92 centering on the input shaft 54 formed on the upper plate 44a of the gear support bracket 44. An idle gear 52 that is slidably inserted and is always meshed with the input gear 51 by the gear shaft 91 is rotatably supported.

  In the torque transmission cutoff mechanism 60 having the above configuration, when the electric motor 41 is driven, the rotation of the input gear 51 causes the idle gear 52 to mesh with the output gear 53 as shown in FIG. Is transmitted to the output gear 53 via the idle gear 52, and the door 13 swings in the closing direction.

  When the door 13 in the closed state begins to rotate toward the open position under its own weight due to the cam action of the gravity hinge 20, a pressing force is applied from the output gear 53 to the idle gear 52, and the idle gear causes the idle gear to move. 52 swings away from the output gear 53, and the meshing with the output gear 53 is released as shown in FIG. 15, and the torque transmission from the output gear 53 to the electric motor 41 is cut off. Is returned to the open position.

  2 and 3 show the gear mechanism 50 in which the idle gear 52 is incorporated between the input gear 51 and the output gear 53. However, as shown in FIGS. 2 may be directly transmitted to the output gear 53, and the idle gear 52 shown in FIGS. 2 and 3 may be omitted.

  10 and 11, as the locking device 70, the rotary solenoid 74 is used to move the slide latch 71 forward and backward with respect to the inner surface of the door tip side. However, as shown in FIG. Thus, the lever 96 may be formed by a hooking lock that is provided at a position where the tip end portion is supported by a receiving member 97 attached to the inner surface of the door tip side of the door 13 and is rotated.

  In the embodiment, the door 13 which is in the open state is rotated toward the closed position by the door rotating device 40, and the door is held in the closed position by the hinge 20 with a return movement function including a gravity hinge or a spring hinge. In contrast to the above, the door 13 is turned toward the closed position by the hinge 20 with the return movement function, and held at the closed position by the door turning device 40. May be rotated toward the open position.

DESCRIPTION OF SYMBOLS 10 Toilet booth 12 Entrance / exit 13 Door 20 Hinge 41 with a return motion function Electric motor 42 Rotor shaft 50 Gear mechanism 51 Input gear 53 Output gear 60 Torque transmission cutoff mechanism 61 Drive disk 62 Follow-up disk 63 Notch part 64 Push pin 65 Notch part 66 Fixation Pin 70 Lock device 71 Slide disk 73 Latch drive device 74 Rotary solenoid 75 Rotating shaft 76 Lever 77 Long hole 78 Pin S Sensor for _two door closing S Sensor for _three door opening

Claims (6)

In the door opening and closing device in the toilet booth that is opened and closed by a hinge with a return movement function that has a function of automatically returning to the open position or the closed position.
A door rotation device is provided that rotates the door in a direction opposite to the direction in which the return operation is performed by the return function hinge.
The door rotation device is rotated by an electric motor that is activated when a door closing sensor or a door opening sensor provided in the toilet booth is turned on by a booth user, and a rotor shaft of the electric motor. It has an output gear that transmits torque to the opening and closing center of the input gear and the door, and consists of a gear mechanism that rotates the door by transmitting rotational torque from the input gear to the output gear,
A torque transmission cutoff mechanism that cuts off torque transmission from the door side to the electric motor side in the torque transmission system from the rotor shaft of the electric motor to the output gear of the gear mechanism ;
The torque transmission blocking mechanism is provided at a shaft end portion of the rotor shaft of the electric motor, a drive disk having a cutout portion having a size corresponding to an opening / closing angle of a door on the outer peripheral portion, and coaxial with the rotor shaft And an input shaft that supports the input gear, and is attached to a shaft end of the input shaft so as to face the drive disk, and has an arcuate cutout on the outer peripheral portion having a size corresponding to a door opening / closing angle. A driven disk formed with, a pressing pin protruding from an outer peripheral portion of a surface of the drive disk facing the driven disk and inserted into a notch of the driven disk, and inserted into a notch of the drive disk, closing instrumentation of the door in the toilet booth, characterized in that comprising a fixing pin for regulating the rotation angle of the drive disk by abutting against the circumferential end of the notch in a size corresponding to the opening and closing angle of the door . In the door opening and closing device in the toilet booth that is opened and closed by a hinge with a return movement function, the door for opening and closing the entrance of the toilet booth having a function of automatically returning to the open position or the closed position,
A door rotation device is provided that rotates the door in a direction opposite to the direction in which the return operation is performed by the return function hinge.
The door rotation device is rotated by an electric motor that is activated when a door closing sensor or a door opening sensor provided in the toilet booth is turned on by a booth user, and a rotor shaft of the electric motor. It has an output gear that transmits torque to the opening and closing center of the input gear and the door, and consists of a gear mechanism that rotates the door by transmitting rotational torque from the input gear to the output gear,
A torque transmission cutoff mechanism that cuts off torque transmission from the door side to the electric motor side in the torque transmission system from the rotor shaft of the electric motor to the output gear of the gear mechanism ;
The torque transmission cutoff mechanism supports the input gear, and is connected to the shaft end portion of the rotor shaft and rotates together with the rotor shaft, and one end portion is rotatably supported around the input shaft. An idler that is supported by the other end of the gear arm and is constantly meshed with the input gear, and swings toward the outer periphery of the output gear when the input gear is rotated by driving the electric motor and meshes with the output gear. A door opening and closing device in a toilet booth characterized by comprising a gear. Said return movement function hinge, made from those open position holding type to automatically return the door to the open position, the door once Claim operated device is a closing action of rotating the door in the closing direction 1 or 2 The door opening and closing device in the toilet booth described in 1. A closed position detection sensor that outputs a detection signal when the door is closed is provided at the closed position of the door, the door is locked at the closed position by a detection signal output from the closed position detection sensor, and the door is opened. The door opening and closing device in the toilet booth according to claim 3 , further comprising a lock device that unlocks the door when the sensor is turned on. 5. The door opening and closing device in a toilet booth according to claim 4 , wherein the locking device comprises a slide latch that is slidably supported with respect to the door-side inner surface of the door, and a latch driving device that slides the slide latch. The latch driving device includes a rotary solenoid and a lever having one end fixed to a rotary shaft of the rotary solenoid and a long hole into which a pin provided in the slide latch is inserted at the other end. Item 6. A door opening and closing device in a toilet booth according to Item 5 .

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