JP2006022605A - Revolving door safety sensor system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the possibility of a user colliding with a door body or a user being sandwiched between the door body and an edge of an entrance / exit.
In a revolving door in which a partition wall 6 rotates in a cylindrical wall 2, while the arc panels 12a and 12b of the partition wall 6 rotate in the vicinity of the edges of the entrances 4a and 4b, the arc panels 12a and 12b The light projector 30 is provided on the vertical 34 and the light receiver 32 is provided on the circular arc panels 12a and 12b so that the safety beam 33 can be passed between the door and the vertical 34 near the entrance.
[Selection] Figure 3

Description

  The present invention relates to a safety sensor system against a user rushing into a doorway of a revolving door.

  In the revolving door, a door body is provided in the cylindrical wall so as to rotate inside the cylindrical wall. The cylindrical wall is provided with an entrance / exit. When a user enters the doorway, the user may be accidentally sandwiched between the edge of the doorway and the door body or may collide with the door body. In order to improve this point, for example, a technique as disclosed in Patent Document 1 has been proposed.

  In the technique of Patent Document 1, a photoelectric sensor that detects a user passing directly below a canopy above the doorway and near the edge of the doorway is arranged to detect a user located near the edge of the doorway. A contact sensor is provided at the edge of the doorway to detect a user who has touched the edge of the doorway. When a user is detected by the photoelectric sensor or the contact sensor, the revolving door is stopped or decelerated.

Japanese Utility Model Publication No. 6-56445

  However, in this technique, a detection region for detecting a user is formed near the edge of the entrance / exit by a photoelectric sensor or a contact sensor. However, this detection area does not cover the entire space between the door approaching the edge of the doorway and the edge of the doorway. For this reason, there is still a dead zone in which the user cannot be detected, and there is a risk that the user collides with the door body or the user is sandwiched between the door body and the edge of the doorway.

  It is an object of the present invention to provide a safety sensor system for a revolving door that reduces the possibility of a user colliding with the door body or a user being sandwiched between the door body and the edge of the doorway. .

  The safety sensor system for a revolving door according to one aspect of the present invention is a projector that allows a safety light beam to pass between the door and a structure in the vicinity of the entrance / exit while the revolving door is rotating in the vicinity of the edge of the entrance / exit. And a light receiver. The revolving door body has, for example, a partition wall that rotates along the inner peripheral surface of the cylindrical wall around the center of the cylindrical wall in a cylindrical wall having a pair of opposed entrances. The partition wall can be formed by a single wing body, or can be formed by a plurality of wing bodies that form a predetermined angle with each other. As the structure, as will be described later, there are poles and panels installed in the vicinity of the entrance or exit or in the vicinity of the exit. One of the projector and the light receiver is provided on the door, and the other is provided on the structure. As the vicinity of the edge of the doorway, for example, when the user rushes to the doorway, the door is located between the door body and the edge of the doorway, and the position where the door body exists at the edge of the doorway And a position rotated from the position in a direction opposite to the direction in which the door body originally rotates by a predetermined angle. While the door is rotating in this door-clamping section, safety light is passed through so that the light from the projector enters the light receiver. When a user is detected by the projector and the light receiver, the control means controls the door body so that the door body is decelerated or stopped in response to the detection signal.

  If comprised in this way, since a safety ray is always passed between the door body and the structure in the middle of the vicinity of the edge of the doorway, the wide space between the door body and the structure It is possible to form a detection area that does not fall out in the space, greatly reducing the possibility of accidents such as users colliding with the door body or being pinched between the door body and the edge of the doorway can do.

  The light projector and the light receiver can be installed on the door body and the stand. In this case, the safety light beam is passed through the space between the door body and the vertical body. For example, the light beam from the projector is configured to enter the light receiver when the door body rotates in the above-described door sandwiching section.

  With this configuration, the wide space between the rotating door and the vertical can be used as a detection area, and the user collides with the door or is sandwiched between the door and the edge of the doorway. The possibility of accidents that may occur is greatly reduced.

  Alternatively, the light projector and the light receiver are installed on the door body and a structure for prohibiting run-in installed in the vicinity of the vertical, and a safety beam is emitted to the space between the door body and the structure. Can pass through. For example, a pole or a panel can be used as the structure for prohibiting run-in, and the structure is arranged outside the doorway.

  With this configuration, since the detection area formed by the projector and the light receiver is also formed outside the entrance and exit, the user can be detected before the user runs into the entrance and exit. It can be further increased.

  In any one of the aspects as described above, one or both of the light projector and the light receiver can be provided in plural. In this case, the light projector and the light receiver are provided so that a light beam from the light projector enters the light receiver until the door passes through the vertical.

  For example, if one projector and one light receiver are provided, the optical axes of the projector and the light receiver may shift as the door rotates, and the sensor may not function. However, as described above, when one or both of the light projectors and the light receivers are plural, for example, when there are plural light projectors, the light receiver always receives light from any one of the light projectors even if the door body rotates. Therefore, it does not stop functioning as a sensor. Even when there are a plurality of light receivers, any one of the light receivers always receives light from the projector, so that it does not function as a sensor.

  As described above, according to the present invention, it is possible to form a leak-free detection area between the moving door body and the vicinity of the edge of the doorway so as to approach the edge of the doorway. The probability that a user who detects the user can be detected can be improved, and safety can be improved.

  The revolving door in which the safety sensor system according to the first embodiment of the present invention is implemented has a cylindrical wall 2 as shown in FIGS. The cylindrical wall 2 is attached to, for example, an opening formed in a building wall. Entrances 4a and 4b are formed so as to face the inside and outside of the building across the opening.

  Inside the cylindrical wall 2, a door body, for example, a partition wall 6 is arranged. As shown in FIG. 1B, the partition wall 6 is substantially in contact with the inner surface of the cylindrical wall 2 and is attached to a rotatable ceiling of the cylindrical wall 2, and is driven by a driving means such as a motor 8 (FIG. 1). 2). In the center of the partition wall 6, for example, a double-drawing automatic door 10 is provided. Arc panels 12a and 12b are attached to both ends of the partition wall, respectively. These circular arc panels 12a and 12b are sized so as to close the entrances 4a and 4b, are arranged point-symmetrically around the center of the partition wall, and can simultaneously close the entrances 4a and 4b. These circular arc panels 12a and 12b are attached so that their rotational direction tips (door tips) protrude from the partition wall 6 to the rotational direction side. Reference numerals 14a and 14b indicate linear walls directly attached to the arc panels 12a and 12b of the partition wall 6. Reference numerals 16a and 16b indicate arc-shaped panels 12a and 12b, straight lines. It is the circular-arc-shaped wall part which forms exhibition space with the shaped wall parts 14a and 14b.

  The above-described control of the motor 8 is performed by the control means shown in FIG. The movable side control panel 18 also controls braking means for decelerating or stopping the partition panel 6, for example, an electromagnetic brake 20. The movable side control panel 18 rotates the partition panel 6 when a sensor (not shown) that detects that a user has reached the vicinity of the doorways 4a and 4b generates a detection signal. Or normally, the partition panel 6 is always rotated.

  When the user rushes into the doorways 4a and 4b, there is a door pinching section that may come into contact with the door tips of the arc panels 12a and 12b or be pinched between the door tips and the edges of the doorways 4a and 4b. is there. This door-clamping section has, for example, a position where the door tips of the circular arc panels 12a, 12b reach the edge of the doorway 4a, 4b in the rotation direction, and the opposite side of the rotation direction by a predetermined angle from the end point. The starting point is the position where the door is returned to. While the door ends of the circular arc panels 12a and 12b are rotating in the door holding section, the rotation speed is slower than in other sections, and when the above contact or pinching actually occurs, the partition panel 6 can be stopped immediately. It is said. Therefore, a door clamp sensor is provided for detecting that the circular arc panels 12a and 12b are passing through the door clamp section.

  As shown in FIG. 2, the door pinching sensor includes a reed switch 22 and two magnetic field generators for turning the reed switch 22 on and off, for example, an N-pole permanent magnet 24N and an S-pole permanent magnet 24S. Consists of. Permanent magnets 24N and 24S are arranged on the above-mentioned rotating ceiling at an angle of the above-mentioned door-clamping section, and the reed switch 22 is provided on the fixed ceiling outside the rotating ceiling.

  The positional relationship between the reed switch 22 and the permanent magnets 24N and 24S is such that when the circular arc panels 12a and 12b reach the starting point of the door clamping section, the permanent magnet 24N passes through the installation position of the reed switch 22, Is turned on, and the permanent magnet 24S passes through the installation position of the reed switch 22 and turns off the reed switch 22 when the arc panels 12a and 12b reach the end point of the door pinching section. Therefore, the reed switch 22 is kept on while the door tips of the circular arc panels 12a and 12b pass through the door-holding section. This ON state is transmitted from the control means, for example, the fixed side control panel 26 to the movable side control panel 18 via the transmission means, for example, the slip ring 28. The movable side control panel 18 controls the motor 8 so that the rotation speed of the partition wall 6 decreases to a predetermined speed during the period when the reed switch 22 is ON.

  Since the speed is reduced in this door pinching section, when the user is detected in this door pinching section, the motor 8 is stopped accordingly and the electromagnetic brake 20 is operated, the partition panel is stopped instantaneously. Can do. As shown in FIGS. 3 to 5, a light projector 30 and a light receiver 32 are provided so that a user can be detected in this door-holding section.

  As shown in FIGS. 3 to 5, the projector 30 is attached to the door ends of the circular arc panels 12 a and 12 b. The light receiver 32 is attached to a stand 34 at the edge of the partition wall 6 on the rotational direction side at the entrances 4a and 4b. The light projector 30 and the light receiver are provided in pairs, and a plurality of these pairs are provided at predetermined intervals in the height direction of the door ends of the circular arc panels 12a and 12b. In addition, rubber switches 36 and 38 are attached to the door tips and the stand 34 of the circular arc panels 12a and 12b as safety sensors, respectively. When the user touches these rubber switches 36, 38, this contact is detected by the rubber switches 36, 38 and transmitted to the movable side control panel 18, and the partition wall 6 is stopped or decelerated.

  The light projector 30 can project light, for example, infrared light, onto a light projecting area 30a extending from the light projector 30 as shown in FIG. As shown in FIG. 3, the light receiver 32 can receive light in a wide light receiving region 32a, for example, infrared light. As shown in FIG. 3, the pair of light projectors 30 and light receivers 32 receive the light from the light projectors 30 with the light receivers 32 in a state where the door tips of the arc panels 12 a and 12 b are located at the start points of the door-clamping sections. In other words, the safety light beam 33 is arranged so as to be passed between them. Furthermore, as shown in FIG. 4, the light from the projector 30 is received by the light receiver 32 as a safety beam 33 even when the door tips of the circular arc panels 12 a and 12 b are positioned in the middle of the door-clamping section. ing. In addition, as shown in FIG. 5, the light receiver 30 is arranged so that the light from the light projector 30 is received by the light receiver 32 as a safety light beam 33 even at almost the end point of the door-clamping section. Of course, while the partition wall 6 is rotating in the state of FIGS. 3 to 4 and FIGS. 4 to 5, the light from the projector 30 is received by the light receiver 32 as the safety light beam 33. .

  Therefore, in the state where the door tips of the circular arc panels 12a and 12b are located at the starting point of the door-holding section, the light receiver 32 is attached so that the light receiving region 32a of the light receiver 32 faces the light projector 30 side. Light that is closer to the cylindrical wall 2 side than the center line of the light projecting region 30a is attached to the door so that it enters the light receiver 32 as a safety light beam 33. As the arc panels 12a and 12b move from the start point to the end point of the door-holding section, the light projecting region 30a is moved by the cylindrical wall 2 side. Accordingly, the light outside the light projected on the light receiver 32 at the start point of the door-clamping section is projected to the light receiver 32 as a safety beam 33, and the light from the start point to the end point of the door-clamping section Even at 1, the light from the projector 30 is projected to the light receiver 32 as a safety beam 33.

  As shown in FIG. 2, each projector 30 is controlled by a control unit provided on the rotating ceiling side, for example, a projection control unit 40. The light projection control unit 40 causes the light projector 30 to project light when receiving a signal from the movable control panel 18 informing that the door tips of the circular arc panels 12a and 12b have reached the starting point of the door-clamping section. The light reception signal of each light receiver 32 is supplied to, for example, a light reception control unit 42 provided in the vertical 34, where it is compared with a reference signal, and whether or not there is a user based on the comparison result. Determine whether. The determination result is supplied to the movable side control panel 18 via the fixed side control panel 26 and the slip ring 28. The movable side control panel 18 stops or decelerates when it is necessary to stop or decelerate the partition wall 6 according to the determination result. Alternatively, a light reception signal from the light receiver 32 is transmitted to the movable side control panel 18 via the light reception control unit 42, the fixed side control panel 26, and the slip ring 28, and whether there is a user compared with the reference signal here. A determination of whether or not may be made.

  In this way, the light from the light projector 30 is received by the light receiver 32 at all points from the start point to the end point of the door pinching section, that is, the arc panels 12a and 12b move in the door pinching section, and the user Since the safety beam 33 is always passed between the door tips of the circular arc panels 12a and 12b and the stand 34 even when the range in which the user can pass is narrow, there is no omission in the user detection area. It becomes possible to improve the safety of the user.

  A structure, for example, a pole 44 is installed outside the stand 34. A space through which the user cannot pass is provided between the pole 44 and the stand 34, and the user is prevented from running through the doorways 4a and 4b through this space.

  In this embodiment, the light receiver 32 is provided on the vertical 34 and the projector 30 is provided on the door tips of the arc panels 12a and 12b. Conversely, the projector 30 is provided on the vertical 34 and the doors of the arc panels 12a and 12b are provided. A light receiver 32 can also be provided.

  6 to 8 show a revolving door in which the safety sensor system according to the second embodiment is implemented. Since the revolving door itself is the same as that shown in the first embodiment, the same parts are denoted by the same reference numerals, and the description thereof is omitted.

  In this safety sensor system, one projector 30 and a plurality of, for example, three receivers 321, 322, and 323 are used. Control of the light receivers 321, 322, and 323 is performed by the light reception control unit 42 shown in FIG.

  The floodlight 30 is attached to the pole 44, and the floodlight area 30a of the floodlight 30 is projected in a state where the door ends of the arc panels 12a and 12b are located at the start point of the door holding section as shown in FIG. It arrange | positions so that it may be located in the optical area | region 30a.

  The light receiver 321 is provided at the door end, and is disposed so that the light receiving region 321a faces the light projector 30 side so as to receive light from the light projector 30. The light receiver 322 is disposed on the circular arc panels 12a and 12b with an interval behind the light receiver 321 in the rotational direction. The light receiver 322 is in a state in which the door tips of the circular arc panels 12a and 12b are slightly rotated to the end point side from the start point of the door pinching section, for example, with the light receiver 322 reaching the start point of the door pinching section in FIG. As shown, the light receiver 322 is arranged facing the light projector 30 side so that the light from the light projector 30 can be received as the safety light beam 331. At this time, the direction of the light receiver 321 is set so that the light from the projector 30 is also received by the light receiver 321. Therefore, from the state in which the door end of the arc panel 12a as shown in FIG. 6, that is, the light receiver 321 is located at the start point of the door holding section, until the light receiver 322 reaches the start point of the door holding section as shown in FIG. During this time, the light receiver 321 receives light from the projector 30 and passes a safety light beam 331 between them.

  The light receiver 323 is disposed on the circular arc panels 12a and 12b with an interval behind the light receiver 322 in the rotational direction. As shown in FIG. 8, the projector 323 is on the projector 30 side so that the light receiver 323 receives the light from the projector 30 in a state where the door ends of the circular arc panels 12 a and 12 b reach a little before the end point of the door holding section. It is arranged to face. In this state, the direction of the light receiver 322 is set so that the light receiver 322 receives the light from the projector 30 as a safety light beam 331. Therefore, from the state where the light receiver 322 is located at the start point of the door clamp section as shown in FIG. 7, the door tips of the arc panels 12a and 12b reach somewhat before the end point of the door clamp section as shown in FIG. In the meantime, the light receiver 322 receives the light from the projector 30 as a safety light beam 331, and passes the safety light beam between them. The light receiver 323 receives the light from the light projector 30 even when the door ends of the circular arc panels 12a and 12b have reached the end point of the door holding section.

  Therefore, while the door tips of the circular arc panels 12a and 12b move from the start point to the end point of the door-clamping section, the light projector 30 installed on the pole 44 and the light receivers 321 arranged at intervals between the circular arc panels 12a and 12b, The safety light beam 331 is always drawn between any one of 322 and 323, and when the circular arc panels 12a and 12b are rotating in the door-clamping section, the rotational side end portions of the entrances 4a and 4b are gradually Since the safety light beam 331 is always passed in front of the door where the distance between the two is small, it is possible to detect the user's rush with a high probability. Further, since only a gap through which the user cannot pass is formed between the pole 44 and the stand 34, it is physically prevented that the user runs into the door-clamping section from this gap.

  In order to prevent a malfunction, the light receiver 321 receives the light from the projector 30 when the light receiver 322 reaches the start point of the door clamp section after the door tips of the arc panels 12a and 12b reach the start point of the door clamp section. The light receiving device 322 is effective only until the light is received, and the light receiver 322 arrives somewhat before the end point of the door pinching section from when the door ends of the arc panels 12a and 12b reach the starting point of the door pinching interval. The receiver 323 is enabled only until the door tips of the circular arc panels 12a and 12b reach the end point somewhat before the end point of the door holding section. Such control is performed in, for example, the light reception control unit 42.

  Also in this embodiment, three light projectors may be provided instead of the light receivers 321, 322, and 323, and one light receiver may be provided instead of the light projector 30.

  The revolving door which implemented the revolving door safety sensor system of 3rd Embodiment is shown in FIG. 9 thru | or FIG. As shown in FIG. 9, the revolving door includes a revolving body 161 having a substantially rectangular planar shape in which the door body is arranged at the center of the cylindrical wall 2, and the vertexes of the revolving body toward the inner surface of the cylindrical wall 2. It consists of a plurality of elongated wing bodies 162, for example, four wing bodies 162.

  As shown in FIGS. 10 to 12, a light projector 30 is provided at the outer end of each wing body 162, that is, a door tip, and a plurality of, for example, two light receivers 324 and 325 are provided on the stand 34. Yes.

  As shown in FIG. 10, the projector 30 is provided so as to project light toward the vertical 34 side in a state where the wing body 162 is located at the starting point of the door-clamping section. In addition, the light receiver 324 is disposed on the outer side of the rubber switch 38 so as to face the light projector 30 so as to receive light from the light projector 30 as a safety light beam 332 in the above state. The arrangement of the projector 30 and the light receiver 324 passes through a state in which the door tip of the wing body 162 is rotated from the start point of the door clamp section shown in FIG. 10 to the middle of the door clamp section as shown in FIG. The light receiver 324 always uses the light from the projector 30 as the safety light beam 332 while the wing body 162 is rotating to the state where it is rotated to a position slightly before the end point of the door-clamping section immediately before the state shown in FIG. Selected to receive light.

  Then, as shown in FIG. 12, the wing body 162 rotates until the end point of the door-clamping section as shown in FIG. 12, and the light of the projector 30 cannot be received by the light receiver 324. The position of the light projector 30 and the light receiver 325 is selected so that the light from the light projector 30 is received as the safety light beam 332 by the light receiver 325 while rotating to the end point of the door-clamping section.

  Therefore, similarly to the safety sensor system of the first embodiment, while the wing body 162 is rotating from the start point to the end point of the door-clamping section, the light receiver 30 and the stand 34 provided at the door tip of the wing body 162 are connected. A safety light beam 332 is drawn between any of the provided light receivers 324 and 325, and it is possible to detect the user's rush into the door-clamping section without omission.

  Also in this embodiment, only the light receiver 324 is effective from the time when the door tip of the wing body 162 passes through the start point of the door pinching section to the time when it passes slightly before the end point of the door pinching section. Only the light receiver 325 is valid until the door end passes through the end point of the door-clamping section. Two light projectors may be provided in place of the light receivers 324 and 325 in the door-holding section, and one light receiver may be provided in place of the light projector 30.

  A safety sensor system according to a fourth embodiment is shown in FIGS. The revolving door in which this safety sensor system is implemented is the same as that shown in FIG. Therefore, the description of the revolving door is omitted.

  In the safety sensor system of this embodiment, a projector 30 is provided at the door of each wing body 162 as in the third embodiment. A plurality of light receivers, for example, three light receivers 326, 327, and 328 are used. The light receivers 326 and 327 are attached to a panel 441 extending from the pole 44 to the vicinity of the vertical 34. The panel 441 is arranged so that only a small gap is formed between the front end of the panel 441 and the stand 34.

  As shown in FIG. 13, the light receiver 326 is rotating while the door tip of the wing body 162 is rotating from the state where the door tip is located at the start point of the door pinching section to the state where it is located in the middle of the door pinching section as shown in FIG. 14. Is arranged on the pole 44 side of the panel 441 so as to receive the light from the projector 30 as a safety light beam 333.

  Also, as shown in FIG. 14, the state immediately before the state where the wing body 162 shown in FIG. 15 is located slightly before the end point of the door nip section from the state where the wing body 162 is located in the middle of the door nip section as shown in FIG. 14. The light receiver 327 is disposed on the side of the panel 441 so that the light receiver 327 receives the light from the projector 30 as the safety light beam 333 until the light receiver 327 receives the light.

  In addition, as shown in FIG. 15, the light receiver 328 receives the light from the projector 30 as a safety light beam 333 until the wing body 162 is located somewhat before the end point of the door clamp section and reaches the end point of the door clamp section. The rubber switch 38 is attached to the inner surface.

  In this way, the light from the projector 30 is always received by one of the light receivers 326, 327, and 328 and the safety light beam 333 is passed through while the door tip rotates from the start point to the end point of the door holding section. Therefore, the distance between the door tip and the rotation side end of the doorway 4a, 4b gradually decreases with the rotation of the door tip in the door pinching section, but there is always a safety beam in front of the door tip. Therefore, the probability that the user who wants to rush can be detected before actually rushing is increased, and safety can be improved.

  Also in this embodiment, when the light receiver 326 receives the light from the projector 30, the other light receivers 327 and 328 are disabled, and when the light receiver 327 receives the light from the projector 30, The other light receivers 326 and 328 are disabled, and when the light receiver 328 is receiving light from the projector 30, the other light receivers 326 and 327 are disabled.

  In the second embodiment, one projector 30 is provided for the plurality of light receivers 321, 322, and 323. However, the present invention is not limited to this. For example, a plurality of light projectors, for example, the light receivers 321, 322, As many projectors as the H.323 are arranged on the pole 44, and the doors of the circular arc panels 12a and 12b are rotated from the start point to the middle of the door-clamping section, the light projector 321 receives a light beam from the corresponding projector. Light is projected and light is projected as a safety beam from the corresponding light projector to the light receiver 322 while the door tip rotates from the middle to the front of the end of the door sandwich section. While the door tip rotates from the near end to the end point, the light receiving device 323 can be configured to project light as a safety beam from the corresponding projector. Similarly, in the fourth embodiment, one light projector 30 is provided for the light receivers 326, 327, and 328. However, the present invention is not limited to this, and a plurality of light projectors, for example, the light receivers 326, 327, The same number of projectors as 328 are arranged side by side on the door tip of the wing body 162, and the light from the projector corresponding to the light receiver 326 is used as a safety ray while the door tip rotates from the start point to the middle of the door holding section. While the light is projected and the door tip rotates from the middle of the door pinching section to the end point, the light from the corresponding light projector is projected to the light receiver 327 as a safety ray, and before the end point of the door pinching section. While the door tip rotates from the end point to the end point, it is possible to project light as a safety beam from the corresponding projector to the light receiver 328. Further, a plurality of light projectors and light receivers may be provided side by side in the height direction, and the corresponding light receivers may receive the light projected from the plurality of light projectors as a safety beam.

It is the front view and top view of a revolving door which implemented the safety sensor system of a 1st embodiment of the present invention. It is a block diagram of the revolving door of FIG. It is the elements on larger scale of the state where the circular arc panel of the revolving door of FIG. 1 is located in the starting point of a door clamping area. It is the elements on larger scale of the state where the circular arc panel of the revolving door of Drawing 1 is located in the middle of a door pinching section. It is the elements on larger scale of the state where the circular arc panel of the rotary door of FIG. 1 is located in the vicinity of the end point of a door pinching area. It is the elements on larger scale of the state where the circular arc panel of the revolving door which implemented the safety sensor system of a 2nd embodiment of the present invention is located in the starting point of a door pinching section. It is the elements on larger scale of the state where the circular arc panel of the revolving door of FIG. 6 is located in the middle of a door pinching area. It is the elements on larger scale of the state where the circular arc panel of the revolving door of FIG. 6 is located in the vicinity of the end point of a door pinching area. It is a top view of the revolving door which implemented the safety sensor system of a 3rd embodiment of the present invention. FIG. 10 is a partially enlarged plan view of a state in which the door of the revolving door of FIG. FIG. 10 is a partially enlarged plan view of a state in which the door tip of the revolving door of FIG. 9 is located in the middle of the door-holding section. FIG. 10 is a partially enlarged plan view of a state in which the door tip of the revolving door of FIG. 9 is located near the end point of the door sandwiching section. It is the elements on larger scale of the state where the door tip of the revolving door which implemented the safety sensor system of a 4th embodiment of the present invention is located in the starting point of a door pinching section. FIG. 14 is a partially enlarged plan view of a state in which the door tip of the revolving door of FIG. 13 is located in the middle of the door holding section. It is the elements on larger scale of the state where the door tip of the revolving door of Drawing 13 is located near the end point of the door pinching section.

Explanation of symbols

2 Cylindrical walls 4a, 4b Doorway 6 Partition wall (door)
30 Projector 32 Receiver

Claims (4)

  Rotation characterized in that a projector and a light receiver are provided for passing a safety beam between the door body and a structure near the doorway while the rotary door body is rotating in the vicinity of the edge of the doorway. Door safety sensor system.   2. The safety sensor system for a revolving door according to claim 1, wherein the projector and the light receiver are installed on the door body and the side wall, and the safety light beam is provided in a space between the door body and the side wall. Revolving door safety sensor system characterized by passing through   The safety sensor system for a revolving door according to claim 1, wherein the projector and the light receiver are installed in the door body and a structure for prohibiting run-in installed in the vicinity of the vertical, and the door body. A safety sensor system for a revolving door, wherein a safety beam is passed through a space between the structure and the structure.   The safety sensor system for a revolving door according to any one of claims 1 to 3, wherein one or both of the light projector and the light receiver are plural, and the door body passes through the stand. A safety sensor system for a revolving door in which the light projector and the light receiver are provided so that light from the light projector enters the light receiver.

Images