JP6448091B2 - Ferris wheel and detection device - Google Patents

Description

  The present invention generally relates to a ferris wheel and a detection device, and more particularly to a ferris wheel and a detection device that detect the state of a locking device of a car.

  A ferris wheel described in Patent Document 1 is illustrated as a conventional example. In the ferris wheel described in Patent Document 1, a detection switch is provided for each gondola (car). When the door (door) of the gondola is unlocked, the unlocked state of the door is detected by a detection switch provided in a lock mechanism (locking device) that locks the door.

Japanese Utility Model Publication No. 63-44079

  However, in the ferris wheel described in Patent Document 1, it is necessary to incorporate a detection switch into each gondola. Therefore, there is a problem that the configuration of each gondola is complicated. Furthermore, if it was going to be installed on an existing Ferris wheel, each gondola had to be significantly modified.

  It is an object of the present invention to provide a ferris wheel and a detection device that can detect the state of a locking device of a car without complicating the configuration of each car.

  In order to solve the above-described problem, a ferris wheel according to one embodiment of the present invention includes a plurality of cars, a rotating wheel, a drive device, and a detection device. Each of the plurality of cars includes a car body, a door, and a locking device. The locking device locks the door. The rotating wheel supports the plurality of cars. The drive device rotates the rotating wheel. The detection device detects the state of the locking device. The detection device includes a reflective photoelectric sensor, a plurality of reflecting members, and a determination unit. The reflective photoelectric sensor is provided outside a track around which the plurality of cars go around. The plurality of reflecting members are respectively provided in the plurality of cars. The reflective photoelectric sensor has a function of projecting light onto a target car that has reached a predetermined position among the plurality of cars. The reflective photoelectric sensor is the target vehicle out of the plurality of reflective members only when the locking device provided in the target vehicle is in an unlocked state or in a locked state. It has a function of detecting light reflected by the target reflecting member provided in the car. The determination unit determines whether or not the locking device is in an unlocked state using a detection result of the reflective photoelectric sensor.

  A detection device according to one embodiment of the present invention includes a reflective photoelectric sensor, a plurality of reflection members, and a determination unit. The reflective photoelectric sensor is provided outside the track around which a plurality of cars of the ferris wheel circulate. The plurality of reflecting members are respectively provided in the plurality of cars. Each of the plurality of cars includes a car body, a door, and a locking device that locks the door. The reflective photoelectric sensor has a function of projecting light onto a target car that has reached a predetermined position among the plurality of cars. The reflective photoelectric sensor is the target vehicle out of the plurality of reflective members only when the locking device provided in the target vehicle is in an unlocked state or in a locked state. It has a function of detecting light reflected by the target reflecting member provided in the car. The determination unit determines whether or not the locking device is in an unlocked state using a detection result of the reflective photoelectric sensor.

  In the ferris wheel of the present invention, each car is provided with a reflecting member, and the reflection type photoelectric sensor is provided outside the track around which the car circulates, so that the car can be configured without complicating the structure of each car. The state of the locking device can be detected.

FIG. 1 is a front view of a ferris wheel locking device according to an embodiment of the present invention in an unlocked state. FIG. 2 is a front view of the locking device of the same in a locked state. FIG. 3 is a front view of the same ferris wheel. FIG. 4 is an enlarged view at X1 in FIG. FIG. 5 is a front view of the ferris wheel car of the above. 6 is a cross-sectional view taken along line AA in FIG. 7 is a cross-sectional view taken along line BB in FIG. FIG. 8 is a side view of the car at a predetermined position of the ferris wheel. FIG. 9 is a block diagram of the main part of the same ferris wheel. FIG. 10A is a front view of a ferris wheel locking device according to Modification 1 of the embodiment of the present invention. FIG. 10B is a front view of the ferris wheel locking device according to the third modification of the embodiment of the present invention. FIG. 11 is a front view of a ferris wheel locking device according to Modification 4 of the embodiment of the present invention.

(Embodiment)
Hereinafter, a ferris wheel and a detection device according to an embodiment of the present invention will be described with reference to the drawings. In the following description, unless otherwise specified, the vertical direction in FIG. 3 is defined as the vertical direction of the Ferris wheel 1, and the horizontal direction in FIG. 3 is defined as the horizontal direction of the Ferris wheel 1. Further, the direction toward the front of the paper surface in FIG. 3 is defined as the forward direction of the Ferris wheel 1, and the direction toward the back of the paper surface in FIG. 3 is defined as the rearward direction of the Ferris wheel 1.

  As shown in FIG. 3, the ferris wheel 1 according to the present embodiment includes a support column 11, a rotating wheel 2, a driving device 22, a plurality of passenger cars 4, and a platform 7. As shown in FIG. 9, the ferris wheel 1 further includes a position detector 83, a detection device 6, a control unit 80, and a notification device 84. As shown in FIG. 3, the column 11 is erected on an installation surface 12 such as the ground. The rotating wheel 2 has a disk shape made of a concentric / mesh skeleton, and supports a plurality of cars 4 arranged at equal intervals in the vicinity of the circumference. The rotating wheel 2 is supported by the support 11 on the rotating shaft 21. The driving device 22 rotates the rotating wheel 2 around the rotating shaft 21. The rotating wheel 2 rotates clockwise in FIG.

  The platform 7 is provided below the track of the car 4 that circulates along with the rotation of the rotating wheel 2 and at the periphery below the track of the car 4. The platform 7 has a boarding position 72 near the center in the left-right direction, and a passenger can get on and off the car 4 from the boarding position 72. Moreover, as shown in FIG. 8, the platform 7 has a step and is concave when viewed from the right. That is, the platform 7 includes a first upper stage 73, a second upper stage 74, and a car passage 75 positioned between the first upper stage 73 and the second upper stage 74. The car 4 passes above the car passage 75. The boarding position 72 is a position near the center of the first upper stage 73 in the left-right direction.

  The plurality of cars 4 have the same configuration. As shown in FIG. 5, each car 4 includes a car main body 41, a door 42, and a plurality (two in this embodiment) of locking devices 5 that lock the door 42. When viewed from the front, the car body 41 is substantially circular and is substantially cylindrical, and has a space inside. In addition, the car body 41 has an entrance 43. The entrance / exit 43 is a rectangular opening provided in front of the car body 41, and the passenger enters the space inside the car body 41 from the entrance / exit 43, or from the entrance / exit 43 to the outside of the car 4. You can go out. The entrance / exit 43 is provided with a door 42 that can open and close the entrance / exit 43.

  The door 42 is a folding door. The door 42 has a rectangular flat plate shape that is long in the vertical direction in the closed state, and closes the entrance 43. A handle 423 is provided on the door 42. The door 42 is attached to the car body 41 at a first side 424 along the longitudinal direction. The door 42 is configured to be displaced so as to be folded toward the first side 424 when the handle 423 is grasped and pushed or pulled, and the entrance 43 is displayed. That is, the door 42 opens. Further, when the door 42 is opened, the handle 423 is grasped and pushed or pulled, so that the door 42 is displaced so that the folded door 42 is unfolded as opposed to when the door 42 is opened. 43 is configured to close. That is, the door 42 is closed.

  Each of the plurality of locking devices 5 is provided across the car body 41 and the door 42 in the vicinity of the second side 425 along the longitudinal direction (vertical direction) when the door 42 is closed. The plurality of locking devices 5 are provided side by side in the vertical direction. The plurality of locking devices 5 have the same configuration. Each locking device 5 is made of, for example, stainless steel. Each locking device 5 is locked or unlocked from the outside of the car 4. As shown in FIG. 1, the locking device 5 includes a latch 51, a receiver 55, an attachment member 52 for the latch 51, and an attachment member 56 for the receiver 55.

  The attachment member 52 of the latch 51 has a rectangular flat plate shape. The attachment member 52 has three holes, and a bolt 524 is inserted into each of the three holes. The attachment member 52 further has one hole, and a bolt 525 is inserted into the hole. The mounting member 52 is fixed to the car body 41 by bolts 525 and three bolts 524. The bolt 525 protrudes from the mounting member 52 toward the outside of the car body 41. As shown in FIG. 7, the attachment member 52 further has a hole 523.

  As shown in FIG. 1, the latch 51 has a latch body 514 and a lever 515. The latch main body 514 has a long rectangular flat plate shape. The lever 515 has a rectangular flat plate shape and is formed integrally with the latch main body 514. The latch main body 514 has a hole 513 near the end in the longitudinal direction, and a pin 520 is passed through the hole 513 and the hole 523 of the attachment member 52 of the latch 51. The latch 51 is attached to the attachment member 52 by a pin 520, and the latch 51 can rotate around the hole 513 with respect to the attachment member 52. The latch 51 comes into contact with the bolt 525 during rotation and stops rotating. The lever 515 is perpendicular to the latch main body 514 from the front end of the latch main body 514 in the longitudinal direction opposite to the side where the hole 513 is provided toward the side opposite to the side where the mounting member 52 of the latch 51 is located. It is provided so as to protrude.

  As shown in FIG. 6, the attachment member 56 of the metal receiver 55 has a rectangular parallelepiped shape. The attachment member 56 is fixed to the door 42 by bolting.

  The money receiver 55 includes a receiving part 552, an irradiation part 551, a connection part 553, and a protruding part 57. The receiving part 552, the irradiation part 551, the connection part 553, and the protrusion part 57 are integrally formed. The receiving portion 552 has a plate shape made of an arcuate curved surface. From the 1st end of the receiving part 552, the rectangular flat plate-shaped irradiation part 551 is provided so that it may protrude. A rectangular flat plate-like connecting portion 553 is provided so as to protrude from the second end of the receiving portion 552. The irradiation unit 551 and the connection unit 553 extend from the receiving unit 552 in the same direction. The receiver 55 is welded to the mounting member 56 at the surface 558. Further, the irradiation part 551 is provided with a protrusion 57 so as to protrude from a part of one side along the direction protruding from the receiving part 552 to the side opposite to the side where the connection part 553 is located. The protruding portion 57 is provided on one side of the irradiation portion 551 opposite to the side where the attachment member 52 of the latch 51 is located. The protrusion 57 has a substantially rectangular flat plate shape.

  As shown in FIG. 1, the latch 51 rotates around the hole 513 when the door 42 is closed, so that the latch main body 514 receives the receiver 55 as shown in FIGS. 2, 6, and 7. Part 552 is hung. That is, the latch main body 514 is located between the irradiation unit 551 and the connection unit 553. This prevents the door 42 from opening. That is, the door 42 is locked by the locking device 5. On the other hand, by rotating the latch main body 514 in the direction opposite to the direction of locking, the latch 51 is detached from the receiver 55 as shown in FIG. 1, and the door 42 can be opened. That is, the door 42 is unlocked by the locking device 5.

  As shown in FIG. 8, the position detector 83 is provided on the platform 7. More specifically, it is provided on the second upper stage 74 opposite to the boarding position 72 for the car 4 with respect to the track surface around which the car 4 goes around. The track surface around which the car 4 circulates is a substantially circular surface when viewed from the front, in which the rear surface in the front-rear direction of the car 4 rotates as the rotating wheel 2 rotates. When the car 4 reaches a predetermined position 71 (see FIG. 3) of the platform 7, the car 4 enters the detection range of the position detector 83, so that the position detector 83 detects the car 4. The predetermined position 71 on the platform 7 is a position where the car 4 arrives after passing the boarding position 72 (see FIG. 3). Here, it is assumed that the car 4 reaches the predetermined position 71 when the front end of the car 4 in the traveling direction reaches the predetermined position 71. In FIG. 3, the rotating wheel 2 rotates clockwise, so that the predetermined position 71 is on the left side of the boarding position 72 in FIG. 3. An ultrasonic sensor is used as the position detector 83. In the position detector 83, a portion for transmitting ultrasonic waves and a portion for detecting ultrasonic waves are provided facing the track surface of the car 4. Note that the position detector 83 may be provided at another location. The position detector 83 may be provided in the first upper stage 73 of the platform 7, for example. Further, as the position detector 83, another type of sensor may be used instead of the ultrasonic sensor. As the position detector 83, for example, a sensor that detects a detection target by light or radio wave hitting the detection target and being blocked or reflected may be used. Examples of such a sensor include a transmission photoelectric sensor, a regression reflection photoelectric sensor, and a diffuse reflection photoelectric sensor. Alternatively, a contact type sensor such as a limit switch may be used as the position detector 83.

  As shown in FIG. 9, the detection device 6 includes two sensor units 3, a plurality of reflecting members 69, and a determination unit 622. Each sensor unit 3 includes one or a plurality of (three in the present embodiment) reflective photoelectric sensors 60. In FIG. 9, only two of the three reflective photoelectric sensors 60 included in each sensor unit 3 are illustrated. The plurality of reflective photoelectric sensors 60 have the same configuration. One reflecting member 69 corresponding to one sensor unit 3 is provided for each car 4. The meaning of “corresponding” for the sensor unit 3 is as follows. As shown in FIG. 8, each sensor unit 3 has one of a plurality of (two) reflection members 69 provided in the locking device 5 of each car 4 by a reflection photoelectric sensor 60 provided therein. The reflecting member 69 that has a function of projecting light onto one of the sensors and projects light from the sensor unit 3 corresponds to the sensor unit 3. The locking device 5 provided with the reflecting member 69 corresponding to the sensor unit 3 corresponds to the sensor unit 3.

  As shown in FIG. 9, each of the plurality of reflective photoelectric sensors 60 includes a light projecting unit 61 that emits light and a light receiving unit 62 that detects light. The reflective photoelectric sensor 60 is a retroreflective photoelectric sensor, and the light receiving unit 62 detects only the light projected from the light projecting unit 61 and reflected by the reflecting member 69. The light projecting unit 61 and the light receiving unit 62 of one reflective photoelectric sensor are provided close to each other. The determination unit 622 determines whether or not each locking device 5 is in the unlocked state, using detection results of the light receiving units 62 included in each of the plurality of reflective photoelectric sensors 60. Specifically, the determination unit 622 determines whether or not the locking device 5 corresponding to each sensor unit 3 is in an unlocked state depending on, for example, whether or not light is detected by each light receiving unit 62 in each sensor unit 3. Determine. When the determination unit 622 determines that any one of the locking devices 5 is unlocked for one car 4, the determination unit 622 generates a signal 92 for starting the operation of the alarm 84. It transmits to the alarm device 84.

  As shown in FIG. 8, the two sensor units 3 are respectively provided on the platform 7. Corresponding to the two locking devices 5 being arranged in the vertical direction in the car 4, the two sensor units 3 are arranged in the vertical direction. As shown in FIG. 4, the position where the two sensor units 3 are provided is in the vicinity of the predetermined position 71 and between the predetermined position 71 and the boarding position 72. Further, as shown in FIG. 8, the position where the two sensor units 3 are provided is the first upper stage 73 on the same side as the side where the boarding position 72 is located with respect to the track surface of the car 4. . Further, the light projecting unit 61 and the light receiving unit 62 face the track surface of the car 4, and the directions are perpendicular to the track surface. As a result, when the car 4 reaches the predetermined position 71, each reflective photoelectric sensor 60 substantially overlaps with a part of the corresponding locking device 5 when viewed from the front-rear direction, and the projection of each reflective photoelectric sensor 60. The optical axis 63 of the light projected from the light unit 61 is along the front-rear direction.

  Each of the plurality of reflecting members 69 reflects light from the light projecting unit 61. The reflection member 69 has a tape shape. That is, the reflective member 69 has a small thickness. As shown in FIG. 1, the reflection member 69 is provided on the surface (front side) opposite to the side (rear side) where the attachment member 52 of the latch 51 is located in the latch body 514 of the locking device 5. As shown in FIGS. 2, 6, and 7, when the locking device 5 is in a state where the door 42 is locked, the reflecting member 69 is positioned between the irradiation portion 551 of the receiver 55 and the latch main body 514.

  The control unit 80 illustrated in FIG. 9 has a function of causing the light projecting unit 61 of the reflective photoelectric sensor 60 to start and stop light projection. Specifically, when the position detector 83 detects that the car 4 has reached the predetermined position 71, the control unit 80 receives a signal from the position detector 83 and emits light to each light projecting unit 61. Let it begin. When the position detector 83 stops detecting the car 4 and no signal is transmitted from the position detector 83 to the control unit 80, the control unit 80 causes the reflective photoelectric sensor 60 to stop projecting light.

  When the car 4 reaches the predetermined position 71, as shown in FIGS. 1 and 2, the irradiation range 64 of the light projected from the three reflective photoelectric sensors 60 in one sensor unit 3 corresponds. The latch 51 provided with one reflecting member 69 includes a position where the reflecting member 69 is provided.

  When receiving the signal 92 from the determination unit 622, the notification device 84 illustrated in FIG. 9 notifies that the locking device 5 is in the unlocked state by voice or light. Specifically, the attendant of the Ferris wheel 1 is informed that the locking device 5 is in the unlocked state by the buzzer included in the alarm device 84 and the indicator lamp included in the alarm device 84 being turned on.

  Next, a method in which the detection device 6 detects the state of the locking device 5 in the ferris wheel 1 of the present embodiment will be described. As described above, the ferris wheel 1 includes two sensor units 3 of the detection device 6, and each locking unit 5 and reflecting member 69 corresponding to each sensor unit 3 is provided for each car 4. Is provided. Therefore, each sensor unit 3 and each reflection type photoelectric sensor 60 included in each sensor unit 3 perform the following contents between the corresponding locking device 5 and reflection member 69.

  When the car 4 reaches the predetermined position 71, the light projecting unit 61 of the reflective photoelectric sensor 60 projects light toward the reflecting member 69. As shown in FIG. 1, when the locking device 5 of the corresponding car 4 is in the unlocked state, the light from the light projecting unit 61 irradiates the reflecting member 69. Therefore, the reflection member 69 reflects the light from the light projecting unit 61. The light receiving unit 62 of the reflective photoelectric sensor 60 detects the light reflected by the reflecting member 69. When any light receiving unit 62 in each sensor unit 3 detects light, the determination unit 622 determines that the locking device 5 corresponding to the corresponding sensor unit 3 is in the unlocked state. When the determination unit 622 determines that even one of all (two) locking devices 5 is in the unlocked state, the determination unit 622 sends a signal 92 for the notification device 84 to start operation to the notification device 84. Send. When the notification device 84 receives the signal 92, it notifies that the locking device 5 is in the unlocked state.

  Similarly, when the car 4 reaches the predetermined position 71, as shown in FIG. 2, when the locking device 5 of the car 4 is in the locked state, the light from the light projecting unit 61 is the optical axis 63. In order to irradiate the irradiation unit 551 positioned in front of the reflection member 69 above, the reflection member 69 is not irradiated. Therefore, the reflecting member 69 does not reflect the light from the light projecting unit 61, and no light is detected by the light receiving unit 62. In each sensor unit 3, when no light is detected in any of the light receiving units 62, the determination unit 622 determines that the locking device 5 corresponding to the corresponding sensor unit 3 is not in the unlocked state.

  When the light projecting unit 61 projects light when the car 4 has not reached the predetermined position 71, the reflecting member 69 does not have the reflecting member 69 on the optical axis 63, so that the reflecting member 69 emits light from the light projecting unit 61. Does not reflect. Since no light is detected in any of the light receiving units 62, the determination unit 622 determines that none of the locking devices 5 is in the unlocked state.

  Next, effects of the ferris wheel 1 and the detection device 6 according to the present embodiment will be described. As described above, in the ferris wheel 1 of the present embodiment, the detection device 6 includes the reflective photoelectric sensor 60, the plurality of reflective members 69, and the determination unit 622. Each of the plurality of cars 4 is provided with a reflecting member 69. The reflective photoelectric sensor 60 has a function of projecting light onto the car 4 that has reached the predetermined position 71. The reflective photoelectric sensor 60 is reflected by the reflective member 69 provided on the car 4 that has reached the predetermined position 71 only when the locking device 5 is in the unlocked state or in the locked state. It has a function of detecting the emitted light. The determination unit 622 determines whether or not the locking device 5 is in the unlocked state using the detection result of the reflective photoelectric sensor 60.

  Since the ferris wheel 1 and the detection device 6 according to the present embodiment are configured as described above, the number of members to be provided in the car 4 to detect the state of the locking device 5 of the car 4 is small. Further, the configuration of the car 4 is not complicated even when compared with a general car that does not include the locking device 5. Moreover, in many cases, the existing car 4 has the locking device 5, and in this case, the above configuration can be realized only by providing the existing car 4 with the reflecting member 69. Therefore, the detection device 6 can be easily retrofitted to the existing car 4.

  In the ferris wheel 1 according to the present embodiment, the reflecting member 69 is provided on the latch 51. When the locking device 5 provided in the car 4 that has reached the predetermined position 71 is in the locked state, the reflecting member 69 provided in the car 4 is projected from the reflective photoelectric sensor 60. It overlaps with the irradiation unit 551 at a position farther from the reflective photoelectric sensor 60 than the irradiation unit 551 on the optical axis 63 of the light. When the locking device 5 provided in the car 4 that has reached the predetermined position 71 is in the unlocked state, the reflecting member 69 provided in the corresponding car 4 is projected from the reflective photoelectric sensor 60. It is provided so as to reflect light. Therefore, the reflective photoelectric sensor 60 detects light reflected by the reflective member 69 only when the locking device 5 is in the unlocked state.

  Since the ferris wheel 1 according to the present embodiment is configured as described above, when the locking device 5 is in the unlocked state and the car 4 reaches the predetermined position 71, the detection device 6 has the locking device 5 Detects unlocked state. On the other hand, when the locking device 5 is in the locked state and the car 4 reaches the predetermined position 71, the detection device 6 does not detect the state of the locking device 5 as the unlocked state. When the reflection photoelectric sensor 60 projects light when the car 4 has not reached the predetermined position 71, the detection device 6 does not detect the state of the locking device 5 as the unlocked state. That is, the detection device 6 detects that the locking device 5 is unlocked only when the car 4 has reached the predetermined position 71 and the locking device 5 is unlocked. In the first place, when the car 4 has not reached the predetermined position 71, it cannot be detected whether or not the locking device 5 is in the unlocked state, so that the locking device 5 may be treated as having no abnormality. In the above-described configuration, if the reflective photoelectric sensor 60 emits light when the car 4 has not reached the predetermined position 71, the detection device 6 does not detect the state of the locking device 5 as the unlocked state. Can be treated as having no abnormality. Furthermore, since the reflecting member 69 is provided on the latch 51, it is easy to secure an installation space when retrofitting to the existing locking device 5.

  In the ferris wheel 1 according to the present embodiment, the latch 51 is provided on the car body 41, and the receiver 55 is provided on the door 42.

  Since the ferris wheel 1 according to the present embodiment is configured as described above, the position of the rotation center (hole 513) of the latch 51 is fixed with respect to the car body 41 even when the door 42 is open. . Therefore, when the car 4 reaches the predetermined position 71 and the door 42 is open, the reflecting member 69 provided on the latch 51 reflects the light from the reflective photoelectric sensor 60. Since the reflective photoelectric sensor 60 detects light, the determination unit 622 determines that the locking device 5 is in the unlocked state. That is, even in an abnormal situation in which the door 42 is opened when the car 4 reaches the predetermined position 71, the abnormality is detected by the detection device 6 as in the case where the locking device 5 is in the unlocked state. be able to.

  The ferris wheel 1 according to the present embodiment includes a platform 7, and the reflective photoelectric sensor 60 is provided on the platform 7.

  Since the ferris wheel 1 according to the present embodiment is configured as described above, the detection device 6 can detect whether or not the locking device 5 is in the unlocked state in the platform 7. Further, since the reflection type photoelectric sensor 60 is provided in a low place, the maintenance is easy.

  In the ferris wheel 1 according to the present embodiment, the reflecting member 69 has a tape shape.

  The position where the reflecting member 69 should be provided in the car 4 may be close to a member other than the reflecting member 69 when the locking device 5 is in the unlocked state or the locked state. In the present embodiment, specifically, as shown in FIG. 7, the position where the reflecting member 69 is provided is close to the irradiation unit 551 and the connection unit 553 in the locked state. If the reflecting member 69 is in the form of a tape as in this embodiment, the reflecting member 69 is unlikely to obstruct the locking or unlocking of the door 42 by the locking device 5. Therefore, it is easy for the locking device 5 to unlock and lock the door 42 in a state where the reflecting member 69 is provided on the car 4.

  In addition, the ferris wheel 1 according to the present embodiment includes a control unit 80 that causes the reflective photoelectric sensor 60 to start projecting light when the car 4 reaches a predetermined position 71.

  Since the ferris wheel 1 according to the present embodiment is configured as described above, the reflective photoelectric sensor 60 can project light only when the car 4 reaches the predetermined position 71. Therefore, the time during which the reflective photoelectric sensor 60 projects is shortened, and deterioration of the reflective photoelectric sensor 60 can be suppressed.

  In addition, the ferris wheel 1 according to the present embodiment includes a position detector 83 that detects that the car 4 has reached the predetermined position 71.

  Since the ferris wheel 1 according to the present embodiment is configured as described above, the control unit 80 responds to the detection of the car 4 that has reached the predetermined position 71 by the position detector 83. Can be started or stopped. Therefore, by adopting the position detector 83, the detection accuracy of the state of the locking device 5 by the detection device 6 can be improved.

  In the ferris wheel 1 according to the present embodiment, the position detector 83 is located on the opposite side of the platform 7 from the boarding position 72 of the car 4 with respect to the track surface around which the car 4 circulates.

  Since the ferris wheel 1 according to the present embodiment is configured as described above, the position detector 83 is separated from the boarding position 72. Further, as shown in FIG. 8, when viewed from the first upper stage 73 side where the boarding position 72 is located on the platform 7, the position detector 83 is sometimes hidden by the car 4 rotating around. Therefore, the position detector 83 is not conspicuous and the beauty of the Ferris wheel 1 is maintained. Further, since the position detector 83 is provided in the platform 7 which is a low place, the maintenance is easy.

  In addition, the ferris wheel 1 according to the present embodiment includes a notification device 84 that notifies that the locking device 5 is in the unlocked state.

  Since the ferris wheel 1 according to the present embodiment is configured as described above, the clerk is informed that the locking device 5 is in the unlocked state, and the clerk locks or drives the door 42 by the locking device 5. It is possible to take measures such as stopping the device 22.

(Modification 1)
Next, Modification 1 of the present embodiment will be described. In the first modification, as shown in FIG. 10A, each of the plurality of reflecting members 69a is provided on a mounting member 52a of the car body 41a or the latch 51a. When the locking device 5a is locked in the car 4 that has reached the predetermined position 71 (when the latch 51a is at the position indicated by the solid line in FIG. 10A), the reflection provided on the car 4 that has reached the predetermined position 71. On the optical axis 63 of the light projected from the reflective photoelectric sensor 60, the member 69a is latched at a position farther from the reflective photoelectric sensor 60 than the latch 51a provided on the car 4 reaching the predetermined position 71. 51a overlaps. That is, the light from the reflective photoelectric sensor 60 is blocked by the latch 51a and does not irradiate the reflective member 69a. When the locking device 5a is in the unlocked state (when the latch 51a is at the position indicated by the phantom line in FIG. 10A), the reflective member 69a provided on the car 4 that has reached the predetermined position 71 is a reflective photoelectric sensor. The light projected from 60 is reflected.

  The reflection member 69a is provided, for example, on the car body 41a. More specifically, the reflection member 69a is located behind the latch main body 514a and between the attachment member 52a of the latch 51a and the receiver 55a. Thus, it is preferable that the reflecting member 69a is provided at a position where it does not displace when the door 42a opens and closes. By doing so, even when the car 4 reaches the predetermined position 71 and the door 42a is open, the light from the reflective photoelectric sensor 60 is reflected by the reflecting member 69a. That is, when the door 42a is open, the detection device 6 detects an abnormality as in the case where the locking device 5a is in the unlocked state.

  The other configuration of the ferris wheel 1 according to the modified example 1 is the same as that of the ferris wheel 1 in the present embodiment.

  When the car 4 reaches the predetermined position 71, the irradiation range 64a of the reflective photoelectric sensor 60 of the sensor unit 3 includes a position where the reflective member 69a is provided. When the locking device 5a is in the locked state, the light from the sensor unit 3 is blocked by the latch 51a, and the reflecting member 69a does not reflect the light from the sensor unit 3, so the sensor unit 3 does not detect the light. Therefore, the determination unit 622 determines that the locking device 5a is not in the unlocked state. When the locking device 5a is in the unlocked state, the reflecting member 69a reflects the light from the sensor unit 3, and the sensor unit 3 detects the light reflected by the reflecting member 69a. Therefore, the determination unit 622 determines that the locking device 5a is in the unlocked state.

(Effect of Modification 1)
Also in the modified example 1, as in the present embodiment, when the locking device 5a is in the unlocked state and the car 4 reaches the predetermined position 71, the detection device 6 has the locking device 5a in the unlocked state. Detect that there is. On the other hand, when the locking device 5a is in the locked state and the car 4 reaches the predetermined position 71, the detection device 6 does not detect the state of the locking device 5a as the unlocked state. If the reflective photoelectric sensor 60 projects light when the car 4 has not reached the predetermined position 71, the detection device 6 does not detect the state of the locking device 5a as the unlocked state.

  That is, only when the car 4 reaches the predetermined position 71 and the locking device 5a is in the unlocked state, the detection device 6 detects that the locking device 5a is in the unlocked state. Further, if the reflection type photoelectric sensor 60 projects light when the car 4 has not reached the predetermined position 71, the detection device 6 does not detect the state of the locking device 5a as the unlocked state, so there is an abnormality in the locking device 5a. Can be treated as not occurring.

  Further, in FIG. 10A, the irradiation range 64a of the light projected from the reflective photoelectric sensor 60 of the sensor unit 3 is centered on the reflective member 69a. The reflecting member 69a is provided on the car body 41a, for example. Unlike the latch 51a, the car body 41a is not displaced between when the locking device 5a is locked and when it is unlocked. Therefore, even when the irradiation range 64a is smaller than when the reflection member 69a is provided on the latch 51a, when the car 4 reaches the predetermined position 71, the irradiation range 64a is provided with the reflection member 69a. Including the part. Therefore, in the modified example 1, the number of the reflective photoelectric sensors 60 provided in each sensor unit 3 can be reduced.

(Modification 2)
Next, a second modification of the present embodiment will be described. The locking device 5 of Modification 2 has a configuration in which the light shielding portion 692b is omitted from the locking device 5b (see FIG. 10B) of Modification 3 described later. In the second modification, when the locking device 5 is in the unlocked state in the car 4 that has reached the predetermined position 71, the reflecting member 69 provided in the car 4 that has reached the predetermined position 71 is removed from the reflective photoelectric sensor 60. Reflects the emitted light. That is, the position where the reflecting member 69 is provided in the latch 51 is included in the irradiation range 64 of the light projected from the reflective photoelectric sensor 60. When the locking device 5 is in the locked state, the reflecting member 69 provided on the car 4 that has reached the predetermined position 71 is not on the optical axis 63 of the light projected from the reflective photoelectric sensor 60. That is, when the locking device 5 changes from the unlocked state to the locked state, the latch 51 is rotated or displaced, and the reflecting member 69 is also displaced accordingly, so that the position where the reflecting member 69 is provided is This is outside the irradiation range 64.

  Note that the receiver 55 may not include the irradiation unit 551. Further, when the latch 51 is structured to rotate and displace, each of the plurality of reflecting members 69 is near the tip (near the lever 515) on the opposite side to the side where the center of rotation (hole 513) of the latch 51 is located. It is preferable to be provided.

  The other configuration of the ferris wheel 1 according to the modified example 2 is the same as that of the ferris wheel 1 in the present embodiment.

  When the locking device 5 is in the unlocked state in the car 4 that has reached the predetermined position 71, the position where the reflecting member 69 is provided is an irradiation range 64 of light from the reflective photoelectric sensor 60 of the sensor unit 3. include. The reflection member 69 reflects the light from the sensor unit 3, and the sensor unit 3 detects the light reflected by the reflection member 69. Therefore, the determination unit 622 determines that the locking device 5 is in the unlocked state. Further, when the locking device 5 changes from the unlocked state to the locked state, the reflection member 69 is displaced by the rotation or displacement of the latch 51, and the reflection member 69 deviates from the light irradiation range 64 from the sensor unit 3. Therefore, when the locking device 5 is in the locked state, the reflection member 69 does not reflect the light from the sensor unit 3, so the sensor unit 3 does not detect the light. Therefore, the determination unit 622 determines that the locking device 5 is not in the unlocked state.

(Effect of Modification 2)
In the above configuration, as in the first modification, the detection device 6 unlocks the locking device 5 only when the car 4 has reached the predetermined position 71 and the locking device 5 is in the unlocked state. It is detected that it is in a state. If the reflection photoelectric sensor 60 projects light when the car 4 has not reached the predetermined position 71, the detection device 6 does not detect the state of the locking device 5 as the unlocked state, and thus the locking device 5 is abnormal. Can be treated as not occurring.

(Modification 3)
Next, Modification 3 of the present embodiment will be described with reference to FIG. 10B. In the third modification, the reflective photoelectric sensor 60 is in a state where the locking device 5b provided in the car 4 that has reached the predetermined position 71 is in a locked state (when the latch 51b is in a position indicated by a virtual line in FIG. 10B). Only has a function of detecting light reflected by the reflecting member 69b provided in the car 4 that has reached the predetermined position 71. The locking device 5b further includes a light shielding portion 692b. Each of the plurality of reflecting members 69b is provided on the latch 51b. When the locking device 5b is locked in the car 4 that has reached the predetermined position 71, the reflecting member 69b provided in the car 4 that has reached the predetermined position 71 is light projected from the reflective photoelectric sensor 60. Reflect. Provided in the car 4 that has reached the predetermined position 71 when the locking device 5b is unlocked in the car 4 that has reached the predetermined position 71 (when the latch 51b is in the position indicated by the solid line in FIG. 10B). The reflection member 69b is farther from the reflection type photoelectric sensor 60 than the light shielding portion 692b provided in the car 4 that has reached the predetermined position 71 on the optical axis 63 of the light projected from the reflection type photoelectric sensor 60. It overlaps with the light shielding portion 692b at the position. That is, the light from the reflective photoelectric sensor 60 is blocked by the light blocking portion 692b and does not irradiate the reflective member 69b.

  The control unit 80 has a function of controlling ON / OFF of the reflective photoelectric sensor 60. The controller 80 causes the reflective photoelectric sensor 60 to start projecting when the car 4 reaches the predetermined position 71, and projects light onto the reflective photoelectric sensor 60 when the car 4 moves away from the predetermined position 71. Stop.

  More specifically, for example, the light shielding portion 692b is provided in the car body 41b. The light shielding portion 692b includes a receiving portion 693b provided so as to protrude from the car body 41b, and a light shielding portion main body 694b. The receiving portion 693b has a rectangular parallelepiped shape perpendicular to the car body 41b. The light shielding part main body 694b has a rectangular flat plate shape and is formed integrally with the receiving part 693b. The light shielding part main body 694b is provided so as to extend in a direction perpendicular to the protruding direction of the receiving part 693b from the leading end of the receiving part 693b protruding. When the locking device 5b is in the unlocked state, the latch 51b comes into contact with the receiving portion 693b by the gravity received by the latch 51b, or when the latch 51b incorporates a spring, the force of the spring. Thereby, a part of the latch 51b is located between the light shielding portion 692b and the car body 41b.

  The other configuration of the ferris wheel 1 according to the modification 3 is the same as that of the ferris wheel 1 in the present embodiment.

  In the above configuration, when the car 4 reaches the predetermined position 71, the control unit 80 causes the reflective photoelectric sensor 60 of the sensor unit 3 to start projecting light and detects the state of the locking device 5b. Specifically, the sensor unit 3 projects light to a position 691b in FIG. 10B. When the locking device 5b is in the locked state, the reflecting member 69b is at the position 691b, so that the reflecting member 69b reflects light from the sensor unit 3. Since the sensor unit 3 detects the light reflected by the reflecting member 69b, the determination unit 622 determines that the locking device 5b is in the locked state. When the locking device 5b is in the unlocked state, the light from the sensor unit 3 is blocked by the light blocking unit 692b and does not reach the reflecting member 69b, and the sensor unit 3 does not detect the light. It is determined that 5b is in the unlocked state. When the car 4 moves away from the predetermined position 71, the sensor unit 3 stops light projection.

  In the third modification, the latch 51b may be provided on the door 42b, and the catch 55b may be provided on the car body 41b. Alternatively, the door 42b may have two doors, and the doors 42b may be opened and closed by displacing the two doors in different directions. It may be provided in each of the two doors. Further, the money receiver 55b may not include the irradiation unit 551.

(Effect of Modification 3)
Also in the modified example 3, as in the present embodiment, when the locking device 5b is in the unlocked state and the car 4 reaches the predetermined position 71, the detecting device 6 has the locking device 5b in the unlocked state. Is detected. On the other hand, when the locking device 5b is in the locked state and the car 4 reaches the predetermined position 71, the detection device 6 does not detect the state of the locking device 5b as the unlocked state. As a result, the detection device 6 of the modification 3 is configured such that the detection device 6 unlocks the locking device 5b only when the car 4 has reached the predetermined position 71 and the locking device 5b is in the unlocked state. It can be detected as a state.

  Furthermore, in the above configuration, the latch 51b provided with the reflecting member 69b can be provided on the door 42b. In that case, when the door 42b is opened, the latch 51b provided with the reflecting member 69b is displaced together with the door 42b, and the position where the reflecting member 69b is provided deviates from the irradiation range 64b. The reflective member 69b does not reflect the light projected from the reflective photoelectric sensor 60, and the reflective photoelectric sensor 60 does not detect the light. Therefore, the determination unit 622 determines that the locking device 5b is in the unlocked state.

  That is, when the latch 51b is provided on the door 42b, even when the door 42b is opened when the car 4 reaches the predetermined position 71, the locking device 5b is in the unlocked state. As with certain cases, the detection device 6 can detect an abnormality. Similarly, when the latch 51b is provided on the car body 41b, the reflecting member 69b does not reflect the light projected from the reflective photoelectric sensor 60 when the door 42b is open. The abnormality can be detected by the detection device 6. In addition, as described above, the detection device according to the third modification has an effect that two doors can be provided on doors that are displaced in different directions.

  Further, similarly to the effect of the first modification, the irradiation range 64b of the light projected from the reflective photoelectric sensor 60 of the sensor unit 3 includes the position 691b of the reflecting member 69b when the locking device 5 is in the locked state. Just go out. That is, the range that needs to be included in the irradiation range 64b is limited to the vicinity of the position 691b. Therefore, in the modification 3, the number of the reflective photoelectric sensors 60 provided in each sensor unit 3 can be reduced.

(Modification 4)
Next, Modification 4 of the present embodiment will be described with reference to FIG. In the modified example 4, the reflective photoelectric sensor 60 is in a state where the locking device 5c provided in the car 4 that has reached the predetermined position 71 is in a locked state (when the latch 51c is in a position indicated by a virtual line in FIG. 11). Only has a function of detecting light reflected by the reflecting member 69c provided in the car 4 that has reached the predetermined position 71. Each of the plurality of reflecting members 69c is provided on any of the car body 41c, the door 42c, or the attachment member 52c of the latch 51c. When the locking device 5 c is locked in the car 4 that has reached the predetermined position 71, the reflecting member 69 c provided on the car 4 that has reached the predetermined position 71 is light projected from the reflective photoelectric sensor 60. Reflect. Provided in the car 4 that has reached the predetermined position 71 when the locking device 5c is unlocked in the car 4 that has reached the predetermined position 71 (when the latch 51c is in the position indicated by the solid line in FIG. 11). The reflecting member 69c is located on the optical axis 63 of the light projected from the reflective photoelectric sensor 60 at a position farther from the reflective photoelectric sensor 60 than the latch 51c provided on the car 4 that has reached the predetermined position 71. It overlaps with the latch 51c. That is, the light from the reflective photoelectric sensor 60 is blocked by the latch 51c and does not irradiate the reflective member 69c.

  The control unit 80 has a function of controlling ON / OFF of the reflective photoelectric sensor 60. The controller 80 causes the reflective photoelectric sensor 60 to start projecting when the car 4 reaches the predetermined position 71, and projects light onto the reflective photoelectric sensor 60 when the car 4 moves away from the predetermined position 71. Stop.

  More specifically, for example, the reflecting member 69c is provided in the car body 41c. The car body 41c may further be provided with a receiving portion 693c. The receiving portion 693c is provided so as to protrude from the car body 41c. The receiving portion 693c has a rectangular parallelepiped shape perpendicular to the car body 41c. When the locking device 5c is in the unlocked state, the latch 51c comes into contact with the receiving portion 693c by the gravity received by the latch 51c, or when the latch 51c has a built-in spring, the force of the spring. Thereby, the reflection member 69c is located between the car main body 41c and the latch 51c.

  The other configuration of the ferris wheel 1 according to the modified example 4 is the same as that of the ferris wheel 1 in the present embodiment.

  In the above configuration, when the car 4 reaches the predetermined position 71, the control unit 80 causes the reflective photoelectric sensor 60 of the sensor unit 3 to start projecting light and detects the state of the locking device 5c. Specifically, the sensor unit 3 projects light toward the reflecting member 69c. When the locking device 5c is locked, the reflecting member 69c reflects light from the sensor unit 3, and the sensor unit 3 detects light reflected by the reflecting member 69c. Therefore, the determination unit 622 determines that the locking device 5c is in the locked state. When the locking device 5c is in the unlocked state, the light from the sensor unit 3 is blocked by the latch 51c and does not reach the reflecting member 69c, and the sensor unit 3 does not detect the light. Therefore, the determination unit 622 includes the locking device 5c. Is determined to be in an unlocked state. When the car 4 moves away from the predetermined position 71, the sensor unit 3 stops light projection.

  In the fourth modification, as in the third modification, the latch 51c may be provided on the door 42c, and the receiver 55c may be provided on the car body 41c. Alternatively, the door 42c may have two doors, and the two doors may be displaced in different directions to open and close the door 42c. The latch 51c and the receiver 55c are respectively It may be provided in each of the two doors. In addition, the receiver 55c may not include the irradiation unit 551.

(Effect of Modification 4)
Also in the modified example 4, as in the effect of the modified example 3, when the locking device 5c is in the unlocked state and the car 4 reaches the predetermined position 71, the detection device 6 is in the unlocked state of the locking device 5c. It detects that it is. On the other hand, when the locking device 5c is in the locked state and the car 4 reaches the predetermined position 71, the detection device 6 does not detect the state of the locking device 5c as the unlocked state. As a result, the detection device 6 according to the modified example 4 detects the locking device 5c only when the car 4 has reached the predetermined position 71 and the locking device 5c is in the unlocked state. It can be detected as a state.

  Further, similarly to the effect of the first modification, the number of the reflective photoelectric sensors 60 provided in each sensor unit 3 can be reduced. That is, the position where the reflection member 69c is provided is not displaced between when the locking device 5c is locked and when it is unlocked. Therefore, even when the irradiation range 64c of the light projected from the reflective photoelectric sensor 60 of the sensor unit 3 is small, when the car 4 reaches the predetermined position 71, the irradiation range 64c is provided with the reflection member 69c. Including parts.

(Modification 5)
Next, Modification 5 of the present embodiment will be described. The locking device 5 of the modification 5 has a configuration in which the light shielding portion 692b is omitted from the locking device 5b of the modification 3 (see FIG. 10B). In the modified example 5, the reflective photoelectric sensor 60 is provided in the car 4 that has reached the predetermined position 71 only when the locking device 5 provided in the car 4 that has reached the predetermined position 71 is in a locked state. It has a function of detecting light reflected by the reflecting member 69. When the locking device 5 is locked in the car 4 that has reached the predetermined position 71, the reflecting member 69 provided in the car 4 that has reached the predetermined position 71 is light projected from the reflective photoelectric sensor 60. Reflect. That is, the position where the reflecting member 69 is provided in the latch 51 is included in the irradiation range 64 of the light projected from the reflective photoelectric sensor 60. When the locking device 5 is in the unlocked state in the car 4 that has reached the predetermined position 71, the reflecting member 69 provided in the car 4 that has reached the predetermined position 71 is projected from the reflective photoelectric sensor 60. It is not on the optical axis 63 of light. That is, when the locking device 5 changes from the locked state to the unlocked state, the latch 51 is rotated or displaced, and the reflecting member 69 is also displaced accordingly, so that the position where the reflecting member 69 is provided is This is outside the irradiation range 64.

  The control unit 80 has a function of controlling ON / OFF of the reflective photoelectric sensor 60. The controller 80 causes the reflective photoelectric sensor 60 to start projecting when the car 4 reaches the predetermined position 71, and projects light onto the reflective photoelectric sensor 60 when the car 4 moves away from the predetermined position 71. Stop.

  Note that the receiver 55 may not include the irradiation unit 551. Further, when the latch 51 is structured to rotate and displace, each of the plurality of reflecting members 69 is near the tip (near the lever 515) on the opposite side to the side where the center of rotation (hole 513) of the latch 51 is located. It is preferable to be provided.

  The other configuration of the ferris wheel 1 according to the modified example 5 is the same as that of the ferris wheel 1 in the present embodiment.

  In the above configuration, when the car 4 reaches the predetermined position 71, the control unit 80 causes the reflective photoelectric sensor 60 of the sensor unit 3 to start projecting light and detects the state of the locking device 5. Specifically, the sensor unit 3 projects light toward the car 4. When the locking device 5 is in the locked state, the position where the reflecting member 69 is provided is included in the light irradiation range 64 from the sensor unit 3. Therefore, the reflecting member 69 reflects the light from the sensor unit 3, and the sensor unit 3 detects the light reflected by the reflecting member 69. Therefore, the determination unit 622 determines that the locking device 5 is in the locked state. Further, when the locking device 5 changes from the locked state to the unlocked state, the reflection member 69 is displaced by the rotation or displacement of the latch 51, and the reflection member 69 deviates from the light irradiation range 64 from the sensor unit 3. . Therefore, when the locking device 5 is in the unlocked state, the reflecting member 69 does not reflect the light from the sensor unit 3, and therefore the sensor unit 3 does not detect the light. Therefore, the determination unit 622 determines that the locking device 5 is in the unlocked state. When the car 4 moves away from the predetermined position 71, the sensor unit 3 stops light projection.

  In the modified example 5, similarly to the modified example 3, the latch 51 may be provided on the door 42 and the receiver 55 may be provided on the car body 41. Alternatively, the door 42 may have two doors, and the two doors may be displaced in different directions so that the door 42 opens and closes. It may be provided in each of the two doors.

(Effect of Modification 5)
Also in the modified example 5, similarly to the effect of the modified example 3, when the locking device 5 is in the unlocked state and the car 4 reaches the predetermined position 71, the detecting device 6 is in the unlocked state. It detects that it is. On the other hand, when the locking device 5 is in the locked state and the car 4 reaches the predetermined position 71, the detection device 6 does not detect the state of the locking device 5 as the unlocked state. As a result, the detection device 6 of the modification 3 is configured such that the detection device 6 unlocks the locking device 5 only when the car 4 reaches the predetermined position 71 and the locking device 5 is unlocked. It can be detected as a state.

  Further, similarly to the effect of the first modification, the number of the reflective photoelectric sensors 60 provided in each sensor unit 3 can be reduced. This is because the irradiation range 64 of the light projected from the reflective photoelectric sensor 60 of the sensor unit 3 only needs to include the reflecting member 69 only when the locking device 5 is locked, and is necessary as the irradiation range 64. This is because the size is limited to a small size.

(Modification 6)
In Modifications 3 to 5, the position detector 83 transmits a signal to the determination unit 622 when the car 4 reaches the predetermined position 71, and the determination unit 622 receives the signal. It may be determined that the car 4 has reached the predetermined position 71. Further, when the determination unit 622 determines that the car 4 has reached the predetermined position 71 and determines that the locking device 5 is unlocked in the car 4 that has reached the predetermined position 71. Finally, the locking device 5 may have a function of determining that it is in the unlocked state. In the modified example 6, the ferris wheel 1 may not include the control unit 80.

(Modification 7)
In the present embodiment and in Modifications 1 to 6, the latch 51 may be provided on the door 42, and the catch 55 may be provided on the car body 41.

  Further, the reflective photoelectric sensor 60 may be provided above the platform 7 by being attached to a support member or the like. Thereby, the reflective photoelectric sensor 60 becomes difficult to enter the field of view, and the beauty of the Ferris wheel 1 is maintained. That is, the reflective photoelectric sensor 60 may be provided at a position other than the platform 7.

  Further, the reflecting member 69 may be, for example, a plate shape. That is, the reflecting member 69 does not have to be tape-shaped.

  Further, the ferris wheel 1 may not include the position detector 83. Further, the ferris wheel 1 may not include the alarm device 84. Furthermore, in the present embodiment, and in the first and second modifications, the ferris wheel 1 may not include the control unit 80.

  Even in each configuration described above, the number of members to be provided on the car 4 in order to detect the state of the locking device 5 of the car 4 is small as in the present embodiment. Further, the configuration of the car 4 is not complicated even when compared with a general car. In particular, when the existing car 4 has the locking device 5, the above-described configuration can be realized only by providing the existing car 4 with the reflecting member 69. Therefore, it is easy to retrofit the existing car 4.

(Modification 8)
In the present embodiment and Modifications 1 to 7, one or more reflective photoelectric sensors may be further provided at a fixed position where the car 4 that has passed the predetermined position 71 arrives. Further, a stop device that stops the rotating wheel 2 when the locking device 5 is in the unlocked state may be further provided. The fixed position is a position where the car 4 further advances after reaching the boarding position 72. More specifically, the fixed position is, for example, near the position where the car 4 leaves the platform 7 (the left end of the platform 7 in FIG. 3). The stop position is, for example, in the vicinity of the fixed position on the platform 7. Each of the one or more reflective photoelectric sensors has the same configuration as the reflective photoelectric sensor 60, and detects whether or not the locking device 5 of the car 4 that has reached the stop position is in an unlocked state. Is provided to do. That is, the reflective photoelectric sensor projects light onto the reflecting member 69 provided on the car 4 and detects the light reflected by the reflecting member 69. Further, the determination unit 622 determines whether or not the locking device 5 is in the unlocked state.

  As described above, the detection device 6 provided in the present embodiment and in the first to seventh modifications detects the state of the locking device 5 of the car 4 that has reached the predetermined position 71. If the determination unit 622 determines that any of the locking devices 5 is in the unlocked state, the determination unit 622 transmits a signal 92 to the notification device 84. When the notification device 84 receives the signal 92 from the determination unit 622, the notification device 84 sounds a buzzer or the like to notify the staff that the locking device 5 is in the unlocked state. Thereafter, the car 4 reaches the stop position.

  In the following description of the modification 8, a case where the modification 8 is applied to the present embodiment will be considered as a specific example. As described above, when the locking device 5 of the corresponding car 4 is locked before the car 4 reaches the stop position, the reflection is performed when the car 4 reaches the stop position. The light projected by the photoelectric sensor is not reflected by the reflecting member 69. Since the reflective photoelectric sensor does not detect light, the determination unit 622 determines that the locking device 5 is not in the unlocked state. On the other hand, when all the locking devices 5 of the corresponding car 4 are not locked until the car 4 reaches the stop position and the reflective photoelectric sensor projects the car 4 The light projected by the reflective photoelectric sensor onto the car 4 is reflected by the reflecting member 69. Furthermore, since the reflective photoelectric sensor detects the light reflected by the reflecting member 69, the determination unit 622 determines that the locking device 5 is in the unlocked state. Therefore, the determination unit 622 transmits a signal to the stop device. When the stop device receives a signal from the determination unit 622, the stop device stops the rotation of the rotating wheel 2.

  Thus, in the modification 8, in addition to sounding the buzzer at the predetermined position 71 when any of the locking devices 5 is in the unlocked state, if the car 4 reaches the stop position, When the locking device 5 is in the unlocked state, the rotating wheel 2 stops. Therefore, it is possible to deal with forgetting to lock the car 4 more reliably.

  In addition, a position detector may be newly provided in the vicinity of the fixed position or the fixed position. The position detector detects that the car 4 has reached the stop position and transmits a signal to the control unit 80. When receiving a signal from the position detector, the control unit 80 causes the reflective photoelectric sensor to start projecting light.

(Modification 9)
In the present embodiment, and in Modifications 1 to 8, the locking device 5 is provided with a spring on the latch 51. When the locking device 5 is in the unlocked state, the latch 51 is acted on by the action of the spring. It may be configured to come to a specific position. Further, the spring may be built in the latch 51.

  With the above configuration, for example, referring to FIG. 10B, when the locking device 5b is in the unlocked state, the latch 51b is stably positioned at the position indicated by the solid line in FIG. 10B. Therefore, the reflecting member 69b provided on the latch 51b is also stably positioned at the position indicated by the solid line in FIG. 10B. Therefore, when the locking device 5b is in the unlocked state, the light projected from the reflective photoelectric sensor 60 is more reliably blocked by the light shielding portion 692b, and the state of the locking device 5b can be detected more reliably.

  Or if it is this embodiment, the reflection member 69 exists in the position shown by FIG. 1, for example in the unlocked state. When the reflecting member 69 is in another position, the latch 51 is rotated by the force of the spring, and the reflecting member 69 is also displaced to the position shown in FIG. Therefore, the reflective photoelectric sensor 60 can detect whether or not the locking device 5 is unlocked by irradiating the position of the reflective member 69 in FIG. Therefore, the state of the locking device 5 can be detected more reliably. Alternatively, the number of reflective photoelectric sensors 60 in one sensor unit 3 can be reduced.

(Modification 10)
In the present embodiment and the first to ninth modifications, the locking device 5 may be a lock that locks the door 42 by the latch being displaced left and right and inserted into the receiver.

  Further, the locking device 5 may be a handle lock or the like having a structure in which a latch appears from the side surface of the door 42 by rotating a handle portion of the door knob and is fitted to a receiver to lock the door 42. In that case, the reflection member 69 is provided on the handle portion, the attachment member of the handle portion, the car body 41 or the door 42.

  Further, it is only necessary that at least one of the plurality of locking devices 5 in each car 4 is provided with the reflecting member 69. That is, there may be a locking device 5 in which the reflecting member 69 is not provided among the plurality of locking devices 5. Even in that case, the detection device 6 can detect whether or not at least one locking device 5 is in a locked state.

  Furthermore, when the determination unit 622 determines that any one or more locking devices 5 are in the unlocked state, but determines that all the locking devices 5 are in the unlocked state, A function of transmitting the signal 92 may be provided.

  Further, the control unit 80 receives and uses a signal related to the rotational speed of the rotating wheel 2 from a device that controls the rotation of the rotating wheel 2 by the driving device 22 without using the signal from the position detector 83. Thus, it may be determined whether or not the car 4 has reached the predetermined position 71, and the reflective photoelectric sensor 60 may start light projection.

  Furthermore, the control unit 80 may have a function of causing the reflective photoelectric sensor 60 to stop projecting light when a predetermined time has elapsed since the reflective photoelectric sensor 60 started projecting light. The predetermined time is after the car 4 reaches the predetermined position 71 and the light projected from any one of the reflective photoelectric sensors 60 irradiates the position where the reflecting member 69 is provided in the car 4. The light projected from any of the reflection type photoelectric sensors 60 is set to a time required until the position where the reflection member 69 is provided in the car 4 is not irradiated.

  Further, the control unit 80 controls the ON / OFF of the function of detecting the light reflected by the reflecting member 69 instead of controlling the ON / OFF of the function of projecting the reflective photoelectric sensor 60. It may have a function of controlling OFF.

  The embodiment described above is an example of the present invention. For this reason, this invention is not limited to these embodiment, A various deformation | transformation is possible in the range which does not deviate from the meaning of this invention.

DESCRIPTION OF SYMBOLS 1 Ferris wheel 2 Rotating wheel 22 Driving device 4 Car 41 Car main body 42 Door 5 Locking device 51 Latch 55 Receiving 6 Detection device 60 Reflective photoelectric sensor 63 Optical axis 69 Reflecting member 7 Platform 71 Predetermined position 72 Entering position 80 Control unit 83 Position detector 84 Notifier 551 Irradiation unit 622 Determination unit

Claims (10)

A plurality of cars each including a car body, a door and a locking device for locking the door;
A rotating wheel that supports the plurality of cars;
A driving device for rotating the rotating wheel;
A detection device for detecting the state of the locking device,
The detection device is:
A reflective photoelectric sensor provided outside the orbit around which the plurality of cars circulate;
A plurality of reflecting members respectively provided on the plurality of cars;
A determination unit, and
The reflective photoelectric sensor is
A function of projecting light onto a target car that has reached a predetermined position among the plurality of cars;
Target reflection provided on the target car among the plurality of reflecting members only when the locking device provided on the target car is in the unlocked state or in the locked state. A function of detecting light reflected by the member,
The determination unit determines whether or not the locking device is unlocked using a detection result of the reflective photoelectric sensor. The reflective photoelectric sensor has a function of detecting light reflected by the target reflecting member only when the locking device provided in the target car is in an unlocked state.
The locking device is
Including deposits and receipts,
The latch is locked by rotating or displacing the latch and being hung on the receiver,
Each of the plurality of reflecting members is provided on the latch,
The money receiver includes an irradiation unit irradiated with light from the reflective photoelectric sensor,
The target reflective member is more reflective than the irradiation unit on the optical axis of light projected from the reflective photoelectric sensor when the locking device provided in the target car is in a locked state. Overlapping with the irradiation part at a position away from
The target reflecting member is provided to reflect light projected from the reflective photoelectric sensor when the locking device provided in the target car is in an unlocked state. The ferris wheel according to claim 1. The latch is provided on the car body,
The ferris wheel according to claim 2, wherein the receipt is provided on the door. A platform,
The ferris wheel according to any one of claims 1 to 3, wherein the reflective photoelectric sensor is provided on the platform.   The ferris wheel according to any one of claims 1 to 4, wherein at least one of the plurality of reflecting members has a tape shape.   The control unit according to any one of claims 1 to 5, further comprising a control unit that causes the reflective photoelectric sensor to start projecting when any of the plurality of cars reaches the predetermined position. Ferris wheel.   The ferris wheel according to claim 6, further comprising a position detector that detects that any of the plurality of cars has reached the predetermined position. A platform,
The said position detector is located in the said platform on the opposite side to the boarding position to the said several cage | basket | car with respect to the track surface which the said several passenger car | cures circulate around. Ferris wheel.   The ferris wheel according to claim 1, further comprising a notification device that notifies that the locking device is in the unlocked state. A reflective photoelectric sensor provided outside the track around which a plurality of cars of the Ferris wheel circulate,
A plurality of reflecting members respectively provided on the plurality of cars;
A determination unit;
Each of the plurality of cars includes a car body, a door, and a locking device that locks the door,
The reflective photoelectric sensor is
A function of projecting light onto a target car that has reached a predetermined position among the plurality of cars;
Target reflection provided on the target car among the plurality of reflecting members only when the locking device provided on the target car is in the unlocked state or in the locked state. A function of detecting light reflected by the member,
The determination unit determines whether or not the locking device is in an unlocked state by using a detection result of the reflective photoelectric sensor.

Images