JP2012188216A - Doorway safety device of elevator car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a doorway safety device of an elevator car that eliminates the need of troublesome seasonal adjustment of a reflective photoelectric sensor and can attain safety by appropriately detecting obstacles near a door device stably throughout the year.SOLUTION: The doorway safety device of the elevator car includes a door device having door panels 2a and 2b movable right and left, where a doorway 1 is opened or closed by moving the door panels 2a and 2b between the door closing position of closing the doorway 1 and a door pocket 4 on the side of the doorway 1, and a reflective photoelectric sensor can irradiating a part near a doorway pillar 3a on the inner surface of the door panel 2 with a sensor beam for obstacle detection through a gap between the doorway pillar 3a on the side of the doorway 1 from the door pocket 4 side and the door panel 2a in a state where the door panels 2a and 2b are at closed positions.

Description

  Embodiments of the present invention relate to an elevator car entrance / exit safety device that prevents danger caused by operation of a door device installed at an entrance / exit of an elevator car.

  The elevator car is provided with a door device for opening and closing the entrance of the car. This door device has a door panel movable left and right, and the doorway is opened and closed by moving between a door closing position where the door panel closes the doorway of the car and a door pocket part on the side of the doorway.

  By the way, for example, when a passenger in a car stands on the door pocket side of the door panel of the door device, and the door panel moves to the door pocket side and opens the door under the situation that the hand or clothes are in contact with the door panel, the passenger There is a risk that your hands and clothes will be drawn into the door pocket.

  Therefore, an optical sensor is provided in the door device, and when there is a passenger approaching the door panel, the passenger is detected as an obstacle by the optical sensor, and the passenger is alerted in accordance with the detection to ensure safety. Is starting to take place.

  As the optical sensor, a reflective photoelectric sensor is used, which is disposed on the upper portion of the door device, and detects an obstacle by irradiating a sensor beam downward from the upper portion of the door device.

JP 2009-29583 A

  In the reflection type photoelectric sensor, the effective irradiation distance of the sensor beam changes in accordance with the surrounding ambient temperature. Therefore, the effective irradiation distance of the sensor beam changes between summer and winter, resulting in a difference in detection capability.Therefore, the sensor output is adjusted and the direction of the receiver that receives the reflected light from the sensor beam for each season. There is an annoying point that adjustment processing is necessary to adjust.

  The embodiment of the present invention pays attention to such problems, eliminates the troublesome adjustment process for each reflection type photoelectric sensor every season, and stably detects obstacles in the vicinity of the door device stably throughout the year. An object of the present invention is to provide an elevator car entrance / exit safety device capable of ensuring safety.

  In order to solve such a problem, the invention of claim 1 has a door panel movable left and right, and the door panel includes a door closing position for closing a doorway of the car and a door pocket portion on the side of the doorway. A gap between the door column and the door column on the side of the doorway from the door pocket portion side in a state where the door panel is in a door closing position. In addition, a reflective photoelectric sensor capable of irradiating a sensor beam for detecting an obstacle is provided in the vicinity of the doorway column on the inner surface of the door panel.

  The invention of claim 2 is characterized in that a plurality of the reflective photoelectric sensors are provided.

  The invention of claim 3 is characterized in that the irradiation directions of the sensor beams by the plurality of reflective photoelectric sensors cross each other.

  The invention according to claim 4 is characterized in that the reflective photoelectric sensor is arranged away from the doorway column toward the door pocket.

  The invention according to claim 5 is characterized in that a concave lens for light diffusion is provided so as to face the sensor beam emission surface of the reflective photoelectric sensor.

  According to a sixth aspect of the present invention, the reflective photoelectric sensor is provided inside the entrance / exit column, and the inner surface of the door panel passes through a gap between the entrance / exit column and the door panel through an opening formed in the entrance / exit column. It is possible to irradiate a sensor beam to the vicinity of the entrance / exit column.

  The invention of claim 7 has a low-speed door panel and a high-speed door panel that can move to the left and right, and each door panel closes the doorway of the car and the door pocket on the side of the doorway. A low-speed door panel is provided at a low speed, and a high-speed door panel moves at a high speed to open and close the entrance / exit, thereby providing a door device having a multistage speed structure. Through a gap between the low-speed door panel and the high-speed door panel from the door panel side, an obstacle detection sensor beam is provided on the inner surface of the high-speed door panel in the vicinity of the door-end side end of the low-speed door panel. A reflection type photoelectric sensor capable of irradiating is provided.

  The invention of claim 8 is characterized in that the reflective photoelectric sensor is provided inside a door-end side end of the low-speed door panel, and the low-speed door panel and the high-speed door panel are opened from an opening formed in the door-end side end. It is characterized in that a sensor beam can be irradiated to a portion of the inner surface of the high-speed door panel in the vicinity of the door contact side end of the low-speed door panel through a gap between the door panel and the door panel.

  The invention of claim 9 has a low-speed door panel and a high-speed door panel that can move to the left and right, and each door panel closes the doorway of the car and a door pocket portion on the side of the doorway. A low-speed door panel is provided at a low speed, and a high-speed door panel is moved at a high speed to open and close the entrance / exit, and is provided in a door column provided on a side portion of the entrance / exit door side. In the state where each door panel is in the door closed position, an obstacle is detected in the vicinity of the doorway column on the inner surface of the low speed door panel through a gap between the doorway column and the low speed door panel. A reflection type photoelectric sensor capable of irradiating a sensor beam for the interior of the door contact side end of the low-speed door panel, with each door panel in a door-closed position, Irradiating a sensor beam for detecting an obstacle to a portion of the inner surface of the high-speed door panel in the vicinity of a door-end side end portion of the low-speed door panel through a gap between the low-speed door panel and the high-speed door panel. It is characterized in that a reflection type photoelectric sensor capable of performing the above is provided.

The invention according to claim 10 has a plurality of door panels movable left and right, and each door panel is in a direction opposite to each other between a door closing position at which the door of the car closes and door pockets on both sides of the doorway. A door device with a double-opening structure that opens and closes the doorway by moving toward
In the state where the door panel is in the door-closed position, through the gap between the door column and the door panel on both sides of the doorway from the door bag side, the portion near the door column on the inner surface of the door panel In addition, a reflection type photoelectric sensor capable of irradiating a sensor beam for detecting an obstacle is provided.

  The invention according to claim 11 has a door panel movable left and right, and the door panel opens and closes the doorway by moving between a door closing position where the doorway of the car is closed and a door pocket portion on the side of the doorway. Irradiating a sensor beam for detecting an obstacle from the lower part of the door panel to the vicinity of the entrance / exit post on the inner surface of the door panel in a state where the door panel is in the door closed position. It is characterized in that a reflection type photoelectric sensor capable of performing the above is provided.

The front view which shows the entrance / exit safety device which concerns on 1st Embodiment of this invention. The top view which shows the doorway safety device which concerns on 1st Embodiment of this invention. The block diagram which shows the structure of the control circuit of the safety device. The front view which shows the doorway safety device which concerns on 2nd Embodiment of this invention. The front view which shows the entrance / exit safety device which concerns on 3rd Embodiment of this invention. The front view which shows the entrance / exit safety device which concerns on 4th Embodiment of this invention. The front view which shows the doorway safety device which concerns on 5th Embodiment of this invention. The top view which shows the entrance / exit safety device which concerns on 6th Embodiment of this invention. The front view which shows the doorway safety device which concerns on 7th Embodiment of this invention. The front view which shows the entrance / exit safety device which concerns on 8th Embodiment of this invention. The front view which shows the doorway safety device which concerns on 9th Embodiment of this invention. The front view which shows the entrance / exit safety device which concerns on 10th Embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 3 show a first embodiment of the present invention. A door device 2 is provided at the entrance 1 of the car. The door device 2 includes, for example, a pair of door panels 2a and 2b that are shifted in the front-rear direction and lined up to the left and right, and the door 1 is opened and closed as the pair of door panels 2a and 2b move at different speeds in the same direction. It has a fast structure.

  The entrance / exit columns 3a and 3b are provided on both sides of the entrance / exit 1, and the outer side of one of the entrance / exit columns 3a is a door pocket portion 4. When the pair of door panels 2a, 2b are opened from the door-closed state in which the doorway 1 is closed side by side, the door panels 2a, 2b move toward the door pocket 4 side. During this movement, the other door panel 2b moves at a speed approximately twice that of the one door panel 2a. When both door panels 2a, 2b reach the door pocket 4 at this speed difference, both door panels 2a, 2b It overlaps in the front and back and is stored in the door pocket 4. That is, the door 1 is opened and closed by moving between the door closing position where the pair of door panels 2 a and 2 b close the door 1 and the door pocket 4 on the side of the door 1.

  When the door panels 2a and 2b are arranged at the door-closed position, a gap a is generated between the doorway column 3a and the door panel 2a. In the door pocket portion 4, a reflection type photoelectric sensor 5 is provided in the vicinity of the entrance / exit post 3 a and at a position below the middle of the upper and lower sides of the door panel 2 a.

  The reflective photoelectric sensor 5 includes an irradiator 5a and a light receiver 5b. From the irradiator 5a, through the gap a from the door pocket 4 side to the inner surface of the door panel 2a and in the vicinity of the entrance / exit column 3a. The sensor beam (infrared rays) for detecting the obstacle can be irradiated. When there is an obstacle in the irradiated portion, the sensor beam hits the obstacle and is reflected, and the reflected light enters the light receiver 5b and is received. When the light receiver 5b receives the reflected light, a predetermined detection signal is output from the reflective photoelectric sensor 5.

  As shown in FIG. 3, the detection signal output from the reflective photoelectric sensor 5 is sent to the control means 10, and the sound generator 11 in the car is driven under the control of the control means 10, and a predetermined attention is paid. A prompt announcement is broadcast in the car.

  Next, the operation of this embodiment will be described.

  When a passenger in the car approaches the inner surface of the door panel 2a and stands in the vicinity of the entrance / exit column 3a and the passenger's hand or clothes touch the door panel 2a, that is, when the door panel 2a is opened. When the hand or clothes are likely to be drawn into the door pocket 4 side, the hand or clothes become an obstacle to the sensor beam emitted from the reflective photoelectric sensor 5. That is, the sensor beam irradiated from the irradiator 5a of the reflective photoelectric sensor 5 is reflected by the obstacle, such as a hand or clothes, and the reflected light enters the light receiver 5b and is received. Then, a detection signal corresponding to this light reception is sent to the control means 10, and the sound generator 11 takes care of, for example, “drawing into the door”. Keep a little away from the door. Announcement that urges attention such as "flows. With this announcement, the passengers are separated from the door panel 2a, so that the danger of a hand or clothes being pulled in when the door panels 2a and 2b are opened is avoided and safety is maintained.

  By the way, when the passenger's hand or clothes are in contact with a portion other than the position near the doorway column 3a of the door panel 2a, it cannot be detected by the reflective photoelectric sensor 5, but the doorway column. Since the portions other than the position near 3a are sufficiently separated from the entrance / exit post 3a, the hands and clothes are not drawn into the gap a.

  On the other hand, the reflective photoelectric sensor 5 has a sensor beam irradiation effective distance that varies depending on the environmental temperature. The reflective photoelectric sensor 5 according to this embodiment is positioned near the doorway column 3a on the door pocket 4 side. Since the sensor beam is irradiated to the vicinity of the entrance / exit column 3a on the inner surface of the door panel 2a, the irradiation distance of the sensor beam is very short. Therefore, the effective irradiation distance of the sensor beam according to the environmental temperature. Even if changes, the change width is very small, and the detection performance for detecting an obstacle is hardly affected. Therefore, there is no need for adjustment processing for adjusting the output of the reflective photoelectric sensor 5 or adjusting the direction of the light receiver 5b for each season of summer and winter, and it is possible to detect obstacles stably throughout the year. And can be safe.

  In addition, when the sensor beam is irradiated from the upper part of the door device toward the lower part as in the conventional case, a small deviation in the angle of the optical axis of the sensor beam causes a large distance in the irradiated part. In this embodiment, since the irradiation distance is shortened, there is almost no deviation, so adjustment is unnecessary or adjustment is easy even if adjustment is necessary. Can be done.

  The reflective photoelectric sensor 5 may be attached to the entrance / exit column 3a or may be attached to the end of the door panel 2a on the door pocket portion 4 side. Even in such a case, the same effects as in the case of the first embodiment can be obtained.

  FIG. 4 shows a second embodiment. In this embodiment, a plurality of, for example, two reflective photoelectric sensors 5 and 6 are arranged side by side on the door pocket 4 side of the door panel 2a. These reflective photoelectric sensors 5 and 6 have irradiators 5a and 6a and light receivers 5b and 6b, respectively, through the gaps between the door panel 2a and the entrance / exit post 3a from the irradiators 5a and 6a. It is possible to irradiate the sensor beam for obstacle detection to the vicinity of the entrance / exit post 3a on the inner surface. When a hand or clothes are present as an obstacle at the irradiated portion, the sensor beam hits the hand or clothes and is reflected, and the reflected light is received by the light receiving devices 5b and 6b of the respective reflective photoelectric sensors 5 and 6. Is received and received. In response to the received light, an announcement to alert the car is broadcast.

  In the case of this embodiment, a plurality of reflection type photoelectric sensors 5 and 6 are provided at the top and bottom, and the irradiators 5a and 6a are directed from the irradiators 5a and 6a to the vicinity of the entrance / exit column 3a on the inner surface of the door panel 2a. Since the sensor beam is irradiated, the range of the irradiation extends up and down, so that a hand and clothes as an obstacle can be detected more accurately.

  FIG. 5 shows a third embodiment. In this embodiment, two reflective photoelectric sensors 5 and 6 are arranged in the vertical direction on the door pocket 4 side of the door panel 2a, and from the irradiation parts 5a and 6a of the reflective photoelectric sensors 5 and 6 respectively. The sensor beam is irradiated toward the vicinity of the entrance / exit column 3a on the inner surface of the door panel 2a, but the beam irradiation direction of one lower reflection type photoelectric sensor 5 is obliquely downward and the other upper reflection type. The beam irradiation direction of the photoelectric sensor 6 is obliquely upward, and the irradiation directions of both beams intersect each other. A part of the irradiation range of both beams overlaps the inner surface of the door panel 2a. And the light receiver 7 which can receive the reflected light of both the beams in common is provided.

  In the case of this embodiment, a part of the irradiation range of the sensor beam of both the reflective photoelectric sensors 5 and 6 overlaps each other, so that the obstacle can be detected more clearly. And since the light receiver 7 which can receive the reflected light of both beams in common is provided, the number of light receivers can be reduced and cost can be reduced.

FIG. 6 shows a fourth embodiment. In this embodiment, a concave lens 8 for light diffusion is provided opposite to the beam exit surface of the irradiator 5a in the reflective photoelectric sensor 5, and a portion in the vicinity of the entrance / exit column 3a on the inner surface of the door panel 2a through the concave lens 8 is provided. A sensor beam is irradiated toward the.
In the case of this embodiment, the sensor beam is diffused by the concave lens 8, so that the irradiation range on the inner surface of the door panel 2a is expanded, and an obstacle in a wider range can be detected.

  FIG. 7 shows a fifth embodiment. In this embodiment, the reflective photoelectric sensor 5 is provided at a position that is separated from the doorway column 3a toward the door pocket portion 4 by a relatively large distance. The sensor beam is irradiated from the irradiator 5a of the reflective photoelectric sensor 5 through the gap between the doorway column 3a and the door panel 2a toward the vicinity of the doorway column 3a on the inner surface of the door panel 2a.

  In the case of this embodiment, since the distance between the reflective photoelectric sensor 5 and the inner surface of the door panel 2a that is the irradiation part of the sensor beam becomes relatively long, the irradiation of the sensor beam on the inner surface of the door panel 2a is performed. The range expands, and accordingly, a wider range of obstacles can be detected.

  FIG. 8 shows a seventh embodiment. In this embodiment, the reflective photoelectric sensor 5 is provided inside the entrance / exit column 3a. An opening 10 is formed in the wall surface of the entrance / exit post 3a so as to face the door panel 2a, and a sensor beam emitted from the irradiator 5a of the reflective photoelectric sensor 5 is provided between the entrance post 3a and the door panel 2a. It irradiates toward the vicinity of the entrance / exit column 3a on the inner surface of the door panel 2a. When a passenger's hand or clothes are present as an obstacle in the vicinity of the entrance / exit post 3a on the inner surface of the door panel 2a and the sensor beam is reflected, the reflected light passes through the opening 10 from the gap and enters the interior of the entrance / exit post 3a. Is received and received, and an announcement for alerting the car is broadcast in response to the received light.

  Furthermore, in this embodiment, the reflection type photoelectric sensor 12 is also provided at the end of the door contact side that is the opposite side of the door pocket 4 side of the door panel 2a. The irradiator 12a and the light receiver 12b of the reflective photoelectric sensor 12 are provided inside the door panel 2a at a position below the upper and lower intermediate portions of the door panel 2a.

  An opening 13 is formed in the wall surface on the back surface side of the door panel 2 a so as to face the reflective photoelectric sensor 12, and a sensor beam from the irradiator 12 a of the reflective photoelectric sensor 12 can be emitted through the opening 13. It has become.

  When the door device 2 is in the door-closed state, the door contact side end of the low speed door panel 2a and the door pocket side end of the high speed door panel 2b overlap each other, and a gap b is generated in the overlapping portion. The sensor beam emitted from the irradiator 12a of the reflective photoelectric sensor 12 passes through the gap b and passes through the gap b in the vicinity of the door contact side end of the low speed door panel 2a on the inner surface of the high speed door panel 2b. Irradiated toward.

  If the passenger's hand and clothes are located close to the inner surface of the high-speed door panel 2b and the vicinity of the door contact side end of the low-speed door panel 2a, when the door device 2 is opened, the hand and clothes There is a risk of being drawn into the gap b. However, in this embodiment, when the passenger's hand or clothes are located close to the door contact side end of the low speed door panel 2a on the inner surface of the high speed door panel 2b, the reflective photoelectric sensor 12 is used. The sensor beam irradiated from the irradiator 12a hits the hand or clothes and is reflected, and the reflected light enters the light receiver 12b of the reflective photoelectric sensor 12 through the opening 13 and is received. An announcement for alerting the car is broadcasted based on the detection signal corresponding to the received light, so that the danger of the hand or clothes being drawn is avoided and safety is maintained.

  The first to seventh embodiments are cases of the door device 2 having a multistage speed structure composed of a low-speed door panel 2a and a high-speed door panel 2b, but as shown in FIG. 9 as the seventh embodiment, In the case of a door device 2 having a double-opening structure in which a pair of door panels 2a and 2b are arranged in the same row on the left and right, and the door panel 2a and 2b moves in a direction away from each other and a direction approaching the door panel 2a and 2b. The reflective photoelectric sensor 5 is provided on both sides thereof.

  That is, in the case of the double door type door device 2, the outer sides of the doorway columns 3a, 3b on both sides are door pocket portions 4a, 4b, respectively. A reflective photoelectric sensor 5 is provided in each door pocket portion 4a, 4b in the vicinity of the entrance / exit pillars 3a, 3b at a position below the middle between the upper and lower sides of the door panels 2a, 2b.

  Each reflective photoelectric sensor 5 includes an irradiator 5a and a light receiver 5b. From the irradiator 5a in one reflection type photoelectric sensor 5, from the door pocket part 4 side of one door panel 2a, through the gap between the door panel 2a and the doorway column 3a, the vicinity of the doorway column 3a on the inner surface of the door panel 2a The sensor beam is irradiated to the portion, and the irradiator 5a in the other reflective photoelectric sensor 5 passes through the gap between the door panel 2b and the entrance / exit column 3b from the door pocket 4 side of the other door panel 2b. A sensor beam is irradiated to the vicinity of the entrance / exit post 3b on the inner surface. When there is an obstacle in the irradiated portion, the sensor beam is reflected by the obstacle and the reflected light is incident on the light receiver 5b of each reflective photoelectric sensor 5 and is received. When the light receiver 5b receives the reflected light, a predetermined detection signal is output from the reflective photoelectric sensor 5, and an announcement for alerting the car is broadcast.

  Therefore, when a passenger on the car stands in a position near the entrance / exit post 3a, 3b on the inner surface of the door panel 2a, 2b and the passenger's hand or clothes touch the door panel 2a, 2b, Announcement that the clothes irradiate from each reflective photoelectric sensor 5 hits the hand or clothes and the reflected light is incident on the light receiver 5b to call attention based on a detection signal corresponding to the incident. Broadcasts in the basket, thereby avoiding the danger of clothes being pulled in and keeping safe.

  FIG. 10 shows an eighth embodiment. In this embodiment, the reflective photoelectric sensor 5 is provided in the lower part of the door device 2. The door device 2 of this embodiment is a multistage speed structure including a pair of door panels 2a and 2b, and a reflective photoelectric sensor 5 is provided at a position close to the door panels 2a and 2b below the door panels 2a and 2b. Yes.

  Each of the reflection type photoelectric sensors 5 has an irradiator 5a and a light receiver 5b, and the irradiator 5a of one of the reflection type photoelectric sensors 5 is located in the vicinity of the entrance / exit column 3a on the inner surface of the low-speed door panel 2a. Is irradiated with a sensor beam, and the irradiator 5a of the other reflective photoelectric sensor 5 irradiates the inner surface of the high-speed door panel 2b with a sensor beam at a position near the end of the low-speed door panel 2a. It has become.

  Accordingly, a passenger in the car stands in a position near the doorway column 3a on the inner surface of the low-speed door panel 2a or a position near the door end side of the low-speed door panel 2a on the inner surface of the high-speed door panel 2b. When the passenger's hand and clothes come into contact with the door panels 2a and 2b, the sensor beam irradiated from the irradiator 5a of each reflective photoelectric sensor 5 hits the hand and clothes, that is, an obstacle, and is reflected. The reflected light enters the light receiver 5b of each reflective photoelectric sensor 5, and an announcement for warning is broadcasted in the car based on the detection signal corresponding to the incident. This avoids the danger of clothes being pulled in and keeps safety.

  The position where the passenger's hand and clothes come into contact is usually from the middle to the lower side of the door panels 2a, 2b, but the reflective photoelectric sensor 5 is located below the door panels 2a, 2b. The distance between the reflective photoelectric sensor 5 and the detection position for detecting an obstacle with the sensor beam is shortened.

  As described above, in the reflective photoelectric sensor 5, the effective irradiation distance of the sensor beam changes according to the environmental temperature, but since the irradiation distance of the sensor beam is short, the effective irradiation distance of the sensor beam according to the environmental temperature. Even if changes, the change width is small, and the detection performance for detecting an obstacle is hardly affected. Therefore, there is no need for adjustment processing for adjusting the output of the reflective photoelectric sensor 5 or adjusting the direction of the light receiver 5b for each season of summer and winter, and it is possible to detect obstacles stably throughout the year. And can be safe.

  FIG. 11 shows a ninth embodiment. The door device 2 of this embodiment has a double-open structure in which a pair of door panels 2a and 2b move to the left and right, and a reflective photoelectric sensor 5 at a position close to the door panels 2a and 2b below the door panels 2a and 2b. Is provided.

  Each of the reflection type photoelectric sensors 5 has an irradiator 5a and a light receiver 5b. The irradiator 5a of one of the reflection type photoelectric sensors 5 is in the vicinity of one of the entrance / exit columns 3a on the inner surface of the one door panel 2a. Is irradiated with a sensor beam, and the irradiator 5a of the other reflective photoelectric sensor 5 irradiates the sensor beam to a position near the other entrance / exit post 3b on the inner surface of the other door panel 2b. Yes.

  Accordingly, a passenger in the car stands in a position near the entrance / exit column 3a on the inner surface of one of the low-speed door panels 2a or in the vicinity of the entrance / exit column 3b on the inner surface of the other door panel 2b. When clothes are in contact with the door panels 2a and 2b, the sensor beam irradiated from the irradiator 5a of each reflective photoelectric sensor 5 is reflected by the hand or clothes, and the reflected light is reflected by each reflective photoelectric sensor. An incident to the light receiver 5b of the sensor 5 is broadcasted in the car to alert the user based on a detection signal corresponding to the incident. This avoids the danger of clothes being pulled in and keeps safety.

  In this embodiment as well, the position where the passenger's hand or clothes come into contact is usually the position from the middle to the lower side of the door panels 2a, 2b, but the reflective photoelectric sensor 5 has the door panel 2a, Since it is provided at a position close to the door panels 2a and 2b below 2b, the distance between the reflective photoelectric sensor 5 and the detection position for detecting an obstacle with the sensor beam is shortened, and depending on the environmental temperature. Even if the effective irradiation distance of the sensor beam changes, the change width is small, and the detection performance for detecting an obstacle is hardly affected. Therefore, there is no need for adjustment processing for adjusting the output of the reflective photoelectric sensor 5 or adjusting the direction of the light receiver 5b for each season of summer and winter, and it is possible to detect obstacles stably throughout the year. And can be safe.

  By the way, when the reflective photoelectric sensor 5 is provided below the door panels 2a and 2b, the beam emitting surface of the irradiator 5a and the beam incident surface of the light receiver 5b in the reflective photoelectric sensor 5 are floor surfaces of the car. Exposed to light, and the irradiated surface and the light receiving surface may become dirty. As a countermeasure against this, as shown as the tenth embodiment in FIG. 12, for example, a brush 15 is attached as a cleaning tool to the lower part of the door panels 2a, 2b, and the brush 15 is a reflection type according to the opening / closing operation of the door panels 2a, 2b. The photoelectric sensor 5 is configured to be slidably brought into contact with the beam incident surface of the irradiator 5a and the beam incident surface of the light receiver 5b so that the exit surface and the incident surface are cleaned and kept clean at all times. Is possible.

  The several embodiments described above are presented as examples, and are not intended to limit the scope of the invention. The novel embodiment of the present invention can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. The embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 ... Entrance / exit 2 ... Door apparatus 2a. 2b ... Door panel 3a. 3b: Entrance column 4 ... Door pocket 5 ... Reflective photoelectric sensor 5a ... Irradiator 5b ... Light receiver 6 ... Reflective photoelectric sensor 6a ... Irradiator 6b ... Light receiver 7 ... Light receiver 8 ... Concave lens 12 ... Reflective photoelectric sensor Type sensor 12a ... irradiator 12b ... receiver

Claims (11)

A door panel movable left and right, comprising a door device that opens and closes the doorway by moving between a door closing position at which the door panel closes the doorway of the car and a door pocket on the side of the doorway;
In the state where the door panel is in the door closed position, through the gap between the door column and the door column on the side of the doorway from the door pocket side, in the vicinity of the door column on the inner surface of the door panel, An elevator car entrance / exit safety device comprising a reflective photoelectric sensor capable of irradiating a sensor beam for detecting an obstacle.   The elevator car entrance / exit safety device according to claim 1, wherein a plurality of the reflective photoelectric sensors are provided.   The elevator car entrance / exit safety device according to claim 2, wherein the irradiation directions of the sensor beams by the plurality of reflection type photoelectric sensors are crossing each other.   2. The elevator car entrance / exit safety device according to claim 1, wherein the reflective photoelectric sensor is disposed away from the entrance / exit post toward the door pocket side. 3.   2. The elevator car entrance / exit safety device according to claim 1, wherein a concave lens for light diffusion is provided opposite to a sensor beam exit surface of the reflective photoelectric sensor.   The reflective photoelectric sensor is provided inside the entrance / exit column and passes through a gap between the entrance / exit column and the door panel through an opening formed in the entrance / exit column, and a portion near the entrance / exit column on the inner surface of the door panel The elevator car entrance / exit safety device according to claim 1, wherein the sensor beam can be irradiated to the elevator car. It has a low-speed door panel that can move to the left and right and a high-speed door panel, and each door panel closes the doorway of the car between the door closing position and the door pocket on the side of the doorway, the low-speed door panel is low-speed, A high-speed door panel has a multi-speed door structure that opens and closes the doorway by moving at a high speed,
Under the state that each door panel is in the door closed position, the low-speed door panel on the inner surface of the high-speed door panel passes through the gap between the low-speed door panel and the high-speed door panel from the low-speed door panel side. An elevator car entrance / exit safety device, characterized in that a reflection type photoelectric sensor capable of irradiating a sensor beam for detecting an obstacle is provided in the vicinity of the door end portion.   The reflective photoelectric sensor is provided inside a door-end side end of the low-speed door panel and passes through a gap between the low-speed door panel and the high-speed door panel from an opening formed in the door-end side end. The elevator car entrance / exit safety device according to claim 7, wherein a sensor beam can be irradiated to a portion of the inner surface of the high-speed door panel in the vicinity of a door-end side end portion of the low-speed door panel. It has a low-speed door panel that can move to the left and right and a high-speed door panel, and each door panel closes the doorway of the car between the door closing position and the door pocket on the side of the doorway, the low-speed door panel is low-speed, A multi-speed door device that opens and closes the doorway by moving a high-speed door panel at a high speed,
Through the gap between the doorway column and the low-speed door panel, inside the doorway column provided on the side of the doorway portion side of the doorway, with each door panel in the door closed position, A reflective photoelectric sensor capable of irradiating a sensor beam for obstacle detection is provided in the vicinity of the entrance / exit post on the inner surface of the low-speed door panel,
Inside the door end of the low-speed door panel, the door panels are in a closed position, and the high-speed door panel is passed through a gap between the low-speed door panel and the high-speed door panel. A reflection type photoelectric sensor capable of irradiating a sensor beam for detecting an obstacle is provided in a vicinity of an end surface of the low-speed door panel on the inner surface. Doorway safety device. By having a plurality of door panels movable left and right, each door panel moving in a direction opposite to each other between a door closing position where the door of the car is closed and door pockets on both sides of the doorway A door device having a double-opening structure for opening and closing the doorway;
In the state where the door panel is in the door-closed position, through the gap between the door column and the door panel on both sides of the doorway from the door bag side, the portion near the door column on the inner surface of the door panel The elevator car entrance / exit safety device is further provided with a reflection type photoelectric sensor capable of irradiating a sensor beam for obstacle detection. A door panel movable left and right, comprising a door device that opens and closes the doorway by moving between a door closing position at which the door panel closes the doorway of the car and a door pocket on the side of the doorway;
A reflective photoelectric sensor capable of irradiating a sensor beam for obstacle detection from the lower part of the door panel to the vicinity of the entrance / exit column on the inner surface of the door panel with the door panel in the door closed position. Elevator entrance / exit safety device, characterized in that a type sensor is provided.

Images