JP5474067B2 - Sliding door device and elevator - Google Patents

Description

  The present invention relates to a sliding door device that automatically moves a door horizontally, and an elevator using the same.

  In a conventional elevator door safety device, a light emitting side phototube is attached to an upper part of a car doorway. An opening is provided in the sill of the car doorway, and a transparent cover is attached to the opening. A light receiving side phototube that receives light from the light emitting side phototube is disposed under the transparent cover, and an obstacle is detected by blocking the light from the light emitting side phototube (for example, Patent Document 1). reference).

Japanese Patent Laid-Open No. 6-227781

  In the conventional door safety device as described above, since the light receiving side phototube is disposed upward in the opening provided in the sill, opaque dust and dust easily adhere to the transparent cover. However, there is a problem that the light from the light emitting side phototube is blocked and malfunction is likely to occur.

  The present invention has been made to solve the above-described problems, and reduces the occurrence of malfunction due to adhesion of dust and dirt, and stably detects an obstacle that may be caught by a door. An object of the present invention is to obtain a sliding door device that can be used, and an elevator using the same.

  The sliding door device according to the present invention is provided in a first entrance / exit frame having a first lower frame provided in a lower portion of the first entrance / exit and in a lower portion of the second entrance / exit, and a gap is formed in the first lower frame. A second door frame having a second lower frame facing each other, a first door that opens and closes the first door by being slid horizontally, and being slid horizontally together with the first door The second door that opens and closes the second doorway, the upper side and the lower side of the first doorway, the light is applied to the irradiation surface that is the surface facing the first lower frame of the second lower frame A light emitting device that radiates light, a light receiving device that receives light emitted from the light emitting device and reflected by the irradiation surface, and a light emitted from the light emitting device and reflected by the irradiation surface. Determine if there is an obstacle by detecting whether the light is received by the receiver And a determination control unit.

  The sliding door device of the present invention irradiates light from the light emitter to the irradiation surface, which is the surface facing the first lower frame of the second lower frame, and the light reflected from the irradiation surface by the light receiver. Since it receives light and determines the presence or absence of obstacles based on the presence or absence of light reception by the light receiver, it is possible to place the light emitter and light receiver in a state where dust and dirt are difficult to adhere, and thereby adhere dust and dust. It is possible to reduce the occurrence of malfunction due to and to stably detect an obstacle that may be caught by the door.

It is a side view which shows the sliding door apparatus of the elevator by Embodiment 1 of this invention. It is the front view which looked at the car door apparatus of FIG. 1 from the landing side. It is a side view which expands and shows the light-emitting device of FIG. It is a top view which shows the light-emitting device of FIG. It is a block diagram which shows the control circuit of the car door apparatus of FIG. It is a flowchart which shows the operation | movement at the time of the door closing of the car control part 21 of FIG. It is a front view which shows the car door apparatus by Embodiment 2 of this invention. It is a side view which shows the sliding door apparatus of the elevator by Embodiment 3 of this invention. It is the front view which looked at the car door apparatus of FIG. 8 from the landing side.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
1 is a side view showing an elevator slide door device (car door device and landing door device) according to Embodiment 1 of the present invention, and FIG. 2 is a front view of the car door device of FIG. 1 as seen from the landing side.

  The car 1 is suspended in the hoistway by the main rope (suspension means), and is raised and lowered in the hoistway by the driving force of the hoisting machine. A car doorway 1a as a first doorway is provided on the front surface of the car 1. A car doorway upper frame 2 as a first upper frame is horizontally disposed above the car doorway 1a. A car entrance lower frame 3 as a first lower frame is horizontally disposed at a lower portion (floor portion) of the car entrance 1a. On the left and right sides of the car doorway 1a, a pair of car doorway vertical frames 4 as first vertical frames are arranged vertically.

  The car entrance upper frame 2 connects the upper ends of the car entrance vertical frames 4. The car entrance lower frame 3 connects the lower ends of the car entrance vertical frame 4. The car entrance / exit frame 5 as the first entrance / exit frame is composed of a car entrance / exit upper frame 2, a car entrance / exit lower frame 3, and a car entrance / exit vertical frame 4. The car doorway 1 a is formed inside the car doorway frame 5.

  The hall 6 on each floor is provided with a hall entrance 6a as a second entrance. A landing entrance upper frame 7 as a second upper frame is horizontally disposed above the landing entrance 6a. A landing entrance lower frame 8 as a second lower frame is horizontally disposed at a lower portion (floor portion) of the landing entrance 6a. A pair of landing entrance vertical frames 9 as second vertical frames are vertically arranged on the left and right of the landing entrance 6a.

  The landing entrance upper frame 7 connects between the upper ends of the landing entrance vertical frames 9. The landing entrance lower frame 8 connects the lower end portions of the landing entrance vertical frame 9. A hall entrance / exit frame 10 as a second entrance / exit frame is configured by a hall entrance / exit upper frame 7, a hall entrance / exit lower frame 8, and a hall entrance / exit vertical frame 9. The landing entrance 6 a is formed inside the landing entrance frame 10.

  The landing entrance frame 10 faces the car entrance frame 5 when the car 1 is landed. At this time, the landing doorway lower frame 8 faces the car doorway lower frame 3 via a predetermined gap. The landing entrance lower frame 8 has a landing entrance lower frame vertical surface 8 a as an irradiation surface facing the car entrance lower frame 3. The car entrance lower frame 3 has a car entrance lower frame vertical surface 3 a facing the landing entrance lower frame 8.

  The car 1 is provided with a pair of car doors 11 as a first door that opens and closes the car doorway 1a by sliding horizontally. The landing 6 is provided with a pair of landing doors 12 as second doors that open and close the landing entrance 6a by sliding horizontally in conjunction with the car door 11 when the car 1 is landed.

  A light emitter 13 for irradiating light to the landing entrance lower frame vertical surface 8a is attached to the car entrance lower frame vertical surface 3a. The light emitter 13 is provided with a vertical light exit window 13a for emitting light.

  A light receiver 14 that receives light emitted from the light emitter 13 and reflected by the vertical surface 8a of the landing entrance lower frame is attached to the surface of the car entrance upper frame 2 that faces the landing entrance upper frame 7. The light receiver 14 is attached downward to the car entrance upper frame 2 via the support bracket 15. Thereby, the light receiver 14 is arranged to protrude from the car entrance upper frame 2 to the landing 6 side. In addition, a horizontal light incident window 14a through which light is incident is provided at the lower end of the light receiver 14.

  The car door device (and landing door device) of Embodiment 1 is a double door type (center open type), and the two car doors 11 are center lines in the width direction of the car doorway 1a when viewed from the front when fully closed. C abut each other. The light emitter 13 and the light receiver 14 are provided on the center line C as viewed from the front.

  3 is an enlarged side view showing the light emitter 13 of FIG. 1, and FIG. 4 is a plan view showing the light emitter 13 of FIG. A substrate 16 is provided in the housing of the light emitter 13. A plurality of (here, five) light emitting elements 17 a to 17 e are provided on the substrate 16. As the light emitting elements 17a to 17e, for example, light emitting diodes, semiconductor lasers, lamps, or the like are used.

  The light emitting elements 17a to 17e emit light obliquely upward. For this reason, the board | substrate 16 is inclined with respect to the car entrance lower frame vertical surface 3a. The light emitting elements 17a to 17e are arranged in a line on a straight line parallel to the width direction (vertical direction in FIG. 4) of the car entrance 1a and the landing entrance 6a.

  The same number of condensing lenses 18a to 18e as the light emitting elements 17a to 17e are provided between the light emitting elements 17a to 17e and the light exit window 13a, that is, obliquely above the light emitting elements 17a to 17e. The condensing lenses 18a to 18e face the corresponding light emitting elements 17a to 17e, respectively, and constitute an optical system.

  Light from the light emitting elements 17a to 17e is condensed on the landing entrance lower frame vertical surface 8a by the condensing lenses 18a to 18e, and light spots P1 to P5 are formed. Specifically, the light spot P1 is formed by the light emitting element 17a and the condensing lens 18a, the light spot P2 is formed by the light emitting element 17b and the condensing lens 18b, and the light spot P3 and the light emitting element 17d is formed by the light emitting element 17c and the condensing lens 18c. And the condensing lens 18d form a light spot P4, and the light emitting element 17e and the condensing lens 18e form a light spot P5.

  The light spots P1 to P5 are formed on a straight line (parallel) parallel to the width direction of the car entrance 1a and the landing entrance 6a. The size of each of the light spots P1 to P5 is desirably smaller, desirably 10 mm or less in diameter, and more desirably 2 mm or less in diameter.

  Here, the surface of the landing entrance lower frame vertical surface 8a is not a mirror surface but has a diffuse reflection characteristic with respect to light. For this reason, the light from the light emitter 13 is diffusely reflected by the landing entrance lower frame vertical surface 8a. The reflected light from the landing entrance lower frame vertical surface 8a enters the light receiver 14 through the light incident window 14a. With such a configuration, an optical axis is formed between the light spots P1 to P5 and the light incident window 14a.

  The object detection device includes a light emitter 13 and a light receiver 14, and detects an object (obstacle) on the optical axis between the light spots P1 to P5 and the light incident window 14a.

  FIG. 5 is a block diagram showing a control circuit of the car door device of FIG. The light receiver 14 is provided with a light receiving element 19 and an object detection control unit 20 as a determination control unit. The light receiving element 19 outputs an electrical signal according to the light intensity of the received light. The light receiving element 19 is disposed in the housing of the light receiver 14 so as to receive light from below through the light incident window 14a.

  The object detection control unit 20 determines whether an object (obstacle) exists between the light spots P1 to P5 and the light incident window 14a based on the electrical signal input from the light receiving element 19. When the object detection control unit 20 determines that an object exists, the object detection control unit 20 outputs a detection signal to the car control unit 21.

  The light emitter 13 is provided with a drive unit 22 that causes the light emitting elements 17a to 17e to emit and extinguish light in accordance with a control signal from the object detection control unit 20. The car control unit 21 outputs an open / close command to the open / close control unit 23 that opens and closes the car door 11 in response to a detection signal from the object detection control unit 20.

  The object detection control unit 20, the car control unit 21, and the opening / closing control unit 23 each have a microcomputer, and can execute each function based on a program stored in the microcomputer.

  Next, the object detection operation will be described. First, among the light emitting elements 17a to 17e, only the light emitting element 17a is turned on to form the light spot P1. At this time, if there is no object between the light spot P1 and the light receiver 14, the reflected light from the light spot P1 is received by the light receiving element 19 of the light receiver 14, and the object detection control unit 20 has no object. Is determined.

  If an object exists between the light spot P1 and the light receiver 14, the reflected light from the light spot P1 is blocked by the object, so that the object detection control unit 20 determines that an object is present and sends a detection signal to the car control unit 21. Output to.

  Next, only the light emitting element 17b is turned on and the same determination is performed. Thereafter, lighting and determination are sequentially performed in the order of the light emitting element 17c, the light emitting element 17d, and the light emitting element 17e, and the operation returns to lighting and determination of the light emitting element 17a, and these operations are repeated. That is, the light emitter 13 changes the irradiation position of the light spot in the horizontal direction. By such an operation, if an object exists between at least one of the light spots P1 to P5 and the light receiver 14, the object can be detected.

  FIG. 6 is a flowchart showing the operation of the car control unit 21 of FIG. 5 when the door is closed. First, the presence or absence of an object is determined by the object detection device in the fully opened state in which the door is closed (step S1). If the object is detected, the fully opened state is continued. If no object is detected, a door closing operation is started (step S2).

  Even after the door closing operation is started, the object detection device determines the presence or absence of an object (step S3). If there is no object, the door closing operation is continued (step S4), and the car door 11 has reached the fully closed position. Whether or not is confirmed (step S5). If the car door 11 is not in the fully closed position, the process returns to step S3, and steps S3 and S4 are repeated. If an object is detected while the door is closed, a door reversing operation is performed (step S6), and the process returns to step S1 after full opening. If the car door 11 is in the fully closed position in step S5, the door closing is completed.

  In such a sliding door device, the light emitter 13 emits light from the vertical light exit window 13a, and the light receiver 14 receives light from the light entrance window 14a facing downward, so that dust and dirt adhere and accumulate. The light emitting device 13 and the light receiving device 14 can be arranged in a state that is difficult to prevent, thereby reducing the occurrence of malfunction due to adhesion of dust and dirt, and obstacles that may be caught between the car door 11 and the landing door 12. It can be detected stably.

  Further, since the light spot is formed small and the light shielding between the light spot and the light receiver 14 is detected, even a small object or a thin object can be detected if it is opaque, and the detection accuracy can be improved. .

Furthermore, by sequentially forming light spots at different positions, the optical axis between the light spot and the light receiver 14 can be moved, and the range for detecting an object can be expanded.
Furthermore, since the light emitter 13 and the light receiver 14 are provided in the vicinity of the center line C of the car doorway 1a in the double sliding door device, it is possible to detect an object until the car door 11 is almost fully closed.

Embodiment 2. FIG.
Next, FIG. 7 is a front view showing a car door device according to Embodiment 2 of the present invention. In the first embodiment, the double-open slide door device is shown. However, the slide door device in the second embodiment is a single-open type. The light emitter 13 and the light receiver 14 are arranged near the car entrance vertical frame 4 on the side where the car door 11 hits when fully closed. Other configurations are the same as those in the first embodiment.

  Even in such a single-open slide door device, the light emitter 13 emits light from the vertical light exit window 13a, and the light receiver 14 receives light from the light entrance window 14a facing downward. The same effect as in the first embodiment can be obtained.

Embodiment 3 FIG.
Next, FIG. 8 is a side view showing an elevator slide door device (car door device and landing door device) according to Embodiment 3 of the present invention, and FIG. 9 is a front view of the car door device of FIG. 8 viewed from the landing side. It is. In the figure, a light emitter 13 for irradiating light to the landing entrance lower frame vertical surface 8a is attached to the surface of the car entrance upper frame 2 facing the landing entrance upper frame 7. The light emitter 13 is attached downward to the car entrance upper frame 2 via a support fitting 15. Thereby, the light emitter 13 is arranged so as to protrude from the car entrance upper frame 2 to the landing 6 side. In addition, a horizontal light exit window 13 a that emits light is provided at the lower end of the light emitter 13.

  A light receiver 14 for receiving light emitted from the light emitter 13 and reflected by the landing entrance lower frame vertical surface 8a is attached to the car entrance lower frame vertical surface 3a. The light receiver 14 is provided with a vertical light incident window 14a through which light is incident. Other configurations are the same as those in the first embodiment.

  As described above, even when the light emitter 13 is disposed above the car entrance 1a and the light receiver 14 is disposed below, the light emitter 13 emits light from the light exit window 13a facing downward, and the light receiver 14 emits vertical light. Since light is received from the incident window 14a, the same effect as in the first embodiment can be obtained.

In the first to third embodiments, the example in which the light emitting elements 17a to 17e and the condensing lenses 18a to 18e of the light emitter 13 are each five is shown as an example, but the number may be larger or smaller. .
In the first to third embodiments, the light emitter 13 and the light receiver 14 are attached to the car 1 side, but may be attached to the landing 6 side. That is, the first doorway may be a landing doorway and the second doorway may be a car doorway.
Further, in the first to third embodiments, the present invention is applied to an elevator sliding door device. However, the present invention is, for example, an entrance / exit provided in a building, an entrance / exit of a vehicle such as a train, or an entrance / exit of a train platform. Etc.

Claims (6)

A first doorway frame having a first lower frame provided at a lower portion of the first doorway;
A second entrance / exit frame provided at a lower portion of the second entrance / exit and having a second bottom frame facing the first bottom frame via a gap;
A first door that opens and closes the first doorway by being slid horizontally;
A second door that opens and closes the second doorway by sliding horizontally with the first door;
The first is provided to either the top and bottom of the doorway, the second the first opposed faces der the lower frame of the lower frame of is, and the second lower frame the first light emitter for emitting light to an end face der Ru irradiation surface of the lower frame side,
A light receiver provided on the other of the upper and lower sides of the first entrance and receiving the light emitted from the light emitter and reflected by the irradiation surface; and the light emitted from the light emitter and reflected by the irradiation surface A sliding door device comprising a determination control unit that determines whether there is an obstacle by detecting whether or not the light is received by the light receiver. The light emitter is attached to the first lower frame and has a vertical light exit window for emitting light;
The first entrance / exit frame further includes a first upper frame provided at an upper portion of the first entrance / exit,
The sliding door device according to claim 1, wherein the light receiver is attached downward to the first upper frame. The first entrance / exit frame further includes a first upper frame provided at an upper portion of the first entrance / exit,
The light emitter is mounted downward on the first upper frame;
The sliding door device according to claim 1, wherein the light receiver is attached to the first lower frame and has a vertical light incident window through which light is incident.   The sliding door device according to claim 1, wherein the light emitter has an optical system that forms a light spot on the irradiation surface.   The slide door device according to claim 4, wherein the light emitter changes an irradiation position of the light spot in a horizontal direction. A car having a car entrance lower frame provided at a lower portion of the car entrance and a car door that opens and closes the car entrance by being slid horizontally;
A landing door that is provided at the landing and opens and closes the landing doorway by sliding horizontally with the car door when the car is landing;
A landing entrance lower frame that is provided at a lower portion of the landing entrance, and faces the lower cage entrance frame via a gap when the car is landing,
Wherein provided on one of upper and lower car entrance, said landing Ri opposing surfaces der the car entrance sill of the doorway sill, and at the end face of the car entrance sill side of the landing doorway sill light emitter for emitting light to Oh Ru irradiation surface,
A light receiver that is provided on the other of the upper and lower portions of the car entrance and that receives light emitted from the light emitter and reflected by the irradiation surface;
Based on the determination result of the determination control unit, the determination control unit that determines the presence or absence of an obstacle by detecting whether or not the light emitted from the light emitter is received by the light receiver, the car door An elevator equipped with a car control unit that controls the opening and closing of the car.

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