JP2013209875A - Optical obstacle detector of opening/closing mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical obstacle detector of an opening/closing mechanism capable of securing a large obstacle detection area by a small number of light projection parts and light-receiving parts.SOLUTION: A detector 20 includes: light projection means 21 disposed on one side of both sides of the width direction of a shutter curtain at an opening opened/closed by a shutter curtain 1 which is an opening/closing body, or in the vicinity of the opening, and including a light projection part 90; and light-receiving means 22 disposed on other side and including a light-receiving part 91 receiving a light 92 emitted from the light projection part 90. For at least one of the light projection part 90 and the light-receiving part 91, a plurality of them are arranged side by side at intervals in an opening/closing direction of the shutter curtain 1. The light 92 emitted from the light projection part 90 is received by the light-receiving part 91. Changes in information regarding the light received by the light-receiving part 91 is determined by a determination device.

Description

  The present invention relates to an obstacle detection device for optically detecting whether or not an opening that is opened and closed by an opening and closing body is present in the vicinity of the opening. For example, a shutter curtain is an opening and closing body. It can be used for various opening / closing devices such as shutter devices, awning devices, and smoke-proof banner devices.

  The shutter device whose opening / closing body is a shutter curtain is provided with an obstacle detection device for detecting whether or not an obstacle is present in the vicinity of the opening that is opened and closed by the shutter curtain. A shutter device in which the obstacle detection device is optical is disclosed in Patent Document 1 below. The optical obstacle detection device in this shutter device is disposed on one of the sides in the width direction of the shutter curtain that is orthogonal or substantially orthogonal to the opening and closing direction of the shutter curtain in the opening or in the vicinity of the opening. The projector includes a light projecting unit including a light projecting unit, and a light receiving unit disposed on the other side and including a light receiving unit that receives light emitted from the light projecting unit.

JP 2010-77752 A

  In the conventional optical obstacle detection device, the light emitted from the light projecting unit is received by the light receiving unit disposed opposite to the light projecting unit in the horizontal direction, so that it corresponds to one light projecting unit. The number of light receiving parts to be performed is one. According to this, even if there are a plurality of light projecting parts and light receiving parts, the obstacle detection area capable of detecting obstacles is limited to the limited range of the aforementioned openings, and covers a large area. I can't.

  An object of the present invention is to provide an optical obstacle detection device for a switchgear that can secure a large obstacle detection area with a small number of light projecting units and light receiving units.

  An optical obstacle detection device for an opening / closing device according to the present invention includes an opening that is opened / closed by an opening / closing body or a width direction of the opening / closing body that is orthogonal to or substantially orthogonal to the opening / closing direction of the opening / closing body. A light projecting unit disposed on one of the two sides and provided with a light projecting unit, and a light receiving unit disposed on the other side and provided with a light receiving unit configured to receive light emitted from the light projecting unit. In the optical obstacle detecting device of the opening / closing device including the number of the light projecting units provided in the light projecting unit, the number of the light receiving units provided in the light receiving unit is at least one. Is a plurality arranged at intervals in the opening and closing direction of the opening and closing body, the light emitted from the light projecting unit can be received by the plurality of light receiving units, these light receiving units To identify changes in the light received by the And it is characterized in that it comprises a determination device.

  In this optical obstacle detection device, light emitted from at least one light projecting unit can be received by a plurality of light receiving units arranged at intervals in the opening / closing direction of the opening / closing body. A large obstacle detection area can be secured by a small number of light projecting units and light receiving units.

  In this optical obstacle detection device, when there is an obstacle that is opened or closed by the opening / closing body or in the vicinity of the opening, the optical axis of the light received by at least one light receiving part is the obstacle. Since it is in a blocked state, the presence / absence of an obstacle can be determined by performing a determination on a change in information regarding light received by each light receiving unit by the above-described determination device.

  The change in the information about light here means a change in the amount of light received by each light receiving unit (when the number of light projecting units is one, the amount of light indicating whether each light receiving unit received light or not). Or if each light received by one light receiving unit is emitted with a different light identification signal for each light, it is received by one light receiving unit. Further, whether or not such an optical identification signal exists in each light may be used. Such an optical identification signal may be the wavelength of light or the number of pulses of light.

  The optical obstacle detection device for an opening / closing device according to the present invention includes an opening that is opened / closed by the opening / closing member or a width of the opening / closing member that is orthogonal to or substantially orthogonal to the opening / closing direction of the opening / closing member. Light receiving means provided with a light projecting unit disposed on one of the two sides of the direction and a light receiving unit disposed on the other side and receiving the light emitted from the light projecting unit In the optical obstacle detection device for an opening / closing apparatus including the plurality of light projecting units included in the light projecting unit, a plurality of the light projecting units arranged in the opening / closing direction of the opening / closing body are arranged at intervals. And the number of the light receiving units provided in the light receiving means is at least one, and the light emitted from the plurality of light projecting units can be received by the light receiving unit. To identify changes related to the light received by the And it is characterized in that it comprises a determination device.

  In this optical obstacle detection device, light emitted from a plurality of light projecting units arranged at intervals in the opening / closing direction of the opening / closing body can be received by at least one light receiving unit, Even in this optical obstacle detection apparatus, a large obstacle detection area can be secured by a small number of light projecting units and light receiving units.

  In this optical obstacle detection device, when there is an obstacle that is opened or closed by the opening / closing body or in the vicinity of the opening, the optical axis of the light received by at least one light receiving part is the obstacle. Since it is in a cut-off state, the above-described discrimination device discriminates the change in the information regarding the light received by the light receiving unit (including the case where the number of light receiving units is one and the number of the light receiving units). By doing so, the presence or absence of an obstacle can be determined.

  The change in information related to light here may be a change in the amount of light received by at least one light receiving unit, or each light received by one light receiving unit is identified by different light for each of these lights. When the light is emitted with a signal, whether or not such an optical identification signal exists in each light received by one light receiving unit may be used. Such an optical identification signal may be the wavelength of light or the number of pulses of light.

  Furthermore, the optical obstacle detection device for an opening / closing device according to the present invention includes an opening that is opened / closed by the opening / closing member or a width of the opening / closing member that is orthogonal to or substantially orthogonal to the opening / closing direction of the opening / closing member. Light receiving means provided with a light projecting unit disposed on one of the two sides of the direction and a light receiving unit disposed on the other side and receiving the light emitted from the light projecting unit In the optical obstacle detection device for an opening / closing apparatus including the plurality of light projecting units included in the light projecting unit, a plurality of the light projecting units arranged in the opening / closing direction of the opening / closing body are arranged at intervals. The number of the light receiving parts provided in the light receiving means is also a plurality arranged at intervals in the opening / closing direction of the opening / closing body, and a plurality of the light projecting parts The light emitted from the plurality of light projecting units is reflected by the plurality of light receiving units. The light receiving units can receive light, and each of the light receiving units arranged at intervals in the opening / closing direction of the opening / closing body can receive light, and these light receiving units receive light. It is characterized by comprising a discriminating device for discriminating a change in information relating to the light to be emitted.

  In this optical obstacle detection device, light emitted from a plurality of light projecting units among a plurality of light projecting units arranged at intervals in the opening / closing direction of the opening / closing member Among the plurality of light receiving units arranged at intervals, the light receiving units are capable of receiving light by a plurality of light receiving units, and each of the light receiving units arranged at intervals in the opening / closing direction of the opening / closing body is Since light can be received, even in this optical obstacle detection device, a large obstacle detection area can be secured by a small number of light projecting units and light receiving units.

  In this optical obstacle detection device, when there is an obstacle that is opened or closed by the opening / closing body or in the vicinity of the opening, the optical axis of the light received by at least one light receiving part is the obstacle. Since it is in a blocked state, the presence / absence of an obstacle can be determined by determining the change in information regarding the light received by each light receiving unit by the above-described determination device.

  The change in information related to light here may be a change in the amount of light received by each light receiving unit, or each light received by one light receiving unit has a different light identification signal for each light. In such a case, it may be determined whether or not such an optical identification signal is present in each light received by one light receiving unit. Such an optical identification signal may be the wavelength of light or the number of pulses of light.

  Then, in each of the optical obstacle detection devices described above, when the obstacle described above is present in the opening that is opened and closed by the opening / closing body or in the vicinity of the opening, based on the signal from the discrimination device. For example, the control device may stop the closing movement of the opening / closing body by controlling the driving device for causing the opening / closing movement of the opening / closing body to be stopped and stopped, or temporarily stop the closing movement of the opening / closing body. Later, the opening / closing body may be opened and moved by a short distance, or other operations may be performed on the opening / closing body.

  Further, in each of the optical obstacle detection devices described above, at least one of the light projecting unit and the light receiving unit described above can be rotated and adjusted around an axis parallel or substantially parallel to the opening / closing direction of the opening / closing body. Also good.

  According to this, the member in which at least one of the light projecting means and the light receiving means is installed is arranged with a deviation angle error in the rotation direction about an axis parallel or substantially parallel to the opening / closing direction of the opening / closing body. However, this error can be corrected and at least one of the above can be installed on the member.

  The light projecting means has a light projecting main body, and the light receiving means has a light receiving main body. Among these main bodies, the main body related to at least one of the above has a length in the opening / closing direction of the opening / closing body. In the case where the case is housed and fixed in the case, the case may be pivotable about an axis parallel to or substantially parallel to the opening / closing direction of the opening / closing body.

  According to this, the light projecting means and the light receiving means have respective main bodies, and among these main bodies, the main body relating to at least one of the above is housed and fixed inside the case having the length in the opening / closing direction of the opening / closing body. The member on which at least one of the light projecting means and the light receiving means is installed is arranged with a deviation angle error in a rotation direction about an axis parallel or substantially parallel to the opening / closing direction of the opening / closing body. Even if it is done, this error can be corrected and the case can be placed.

  When the case is coupled via a bracket to a stationary member that is stationary relative to the opening / closing body that opens and closes, the case has an axis parallel to or substantially parallel to the opening / closing direction of the opening / closing body. By making the rotation adjustment to the center, the above-described error can be corrected.

  The number of such brackets may be one, or a plurality of brackets such as two disposed at both ends of a case that is long in the opening / closing direction of the opening / closing body.

  Further, when the light projecting means and the light receiving means are arranged on two immovable members that are immovable with respect to the opening / closing body that is opened and closed, at least one of the immovable members is a hollow portion. In this hollow portion, an electrical cable having an end connected to at least one of the light projecting means and the light receiving means may be housed and wired.

  According to this, at least one of the two immovable members in which the light projecting means and the light receiving means are arranged can be used as a member for accommodating and wiring the electric cable inside, and the member can be shared. be able to.

  Further, in the above-described present invention, the place where the light projecting means and the light receiving means are arranged is arbitrary as long as it is on both sides in the width direction of the opening / closing body that is orthogonal or substantially orthogonal to the opening / closing direction of the opening / closing body. However, when the opening and closing movement is guided by guide members arranged on both sides in the width direction of the opening / closing body that is orthogonal or substantially orthogonal to the opening / closing direction of the opening / closing body, the light projecting means and the light receiving means are The guide members may be arranged at locations corresponding to the locations of the guide members.

  And the 1st form for arrange | positioning a light projection means and a light reception means in the location corresponding to the arrangement location of each guide member in this way arrange | positions a light projection means and a light reception means in each guide member. That is, attaching the light projecting means and the light receiving means to the respective guide members.

  In the second embodiment, when each guide member is disposed on one of the front and back surfaces of the housing of the structure in which the opening is formed, the light projecting means and the light receiving means are It is arrange | positioning at the other among the surface and the back surface of a housing.

  In the third mode, when each of the guide members is disposed on one of the front surface and the back surface of the housing of the structure in which the opening is formed, , Arranging at least one on the housing in a state of projecting toward the opening.

  In addition, the housing of the structure may be a wall, a pillar, or the like, and may be composed of an arbitrary material.

  Further, the optical obstacle detection device according to the present invention can be applied to any opening / closing device in which the opening / closing body moves, and the opening / closing device of the example is a shutter device having a shutter curtain as the opening / closing body, The optical obstacle detection device according to the present invention can also be applied to an opening / closing device such as an awning device or a smoke-proof banner device.

  When the optical obstacle detection device according to the present invention is applied to a shutter device, and the shutter curtain of the shutter device is wound up by a take-up shaft and fed out, the light projection And / or an electric device related to the light receiving means is attached to the take-up shaft, and the attachment position of the electric device on the take-up shaft is determined in the width direction of the shutter curtain whose end is coupled to the take-up shaft. It is good also as a location in the range.

  According to this, since the electric device related to the light projecting means and / or the light receiving means is disposed within the range in the width direction of the shutter curtain wound around the winding shaft, the electric device is disposed by the shutter curtain. It will be possible to protect against external forces.

  The electrical device may be any device as long as it is related to the light projecting means and / or the light receiving means, and may be, for example, a power supply unit or the discrimination device described above. It may be a control device for controlling opening / closing movement and stop, or a composite device having these functions.

  When the optical obstacle detection device according to the present invention is applied to a shutter device, this shutter device may be, for example, a garage shutter device, a store entrance / exit shutter device, or a fire. It may be a shutter device for disaster prevention to form a disaster prevention zone with a shutter curtain that is fully closed when a disaster such as a disaster occurs, and moreover, a plurality of shutter devices for entrances and exits for stores and a plurality of shutter devices for disaster prevention, etc. A combined shutter device used for the purpose may be used.

  Further, in the vicinity of the opening that is opened and closed by the opening / closing body or in the vicinity of the opening, a plurality of light projecting units of the light projecting unit and a plurality of light receiving units of the light receiving unit constituting the optical obstacle detection device are arranged side by side. An example of the direction is the vertical direction. When a plurality of light projecting units and light receiving units are arranged in the vertical direction in this way, the opening / closing direction of the opening / closing body is the vertical direction like the shutter curtain of the shutter device. Alternatively, it may be in the left-right direction as in the door body of the sliding door device, or in the horizontal direction around the hinge as in the door body of the open / close door device. For the sliding door device and the open / close door device, there are a plurality of left and right frame members arranged opposite to each other to form an opening that is opened and closed by the door body, attachment members attached to these frame members, and the like. Individual light projecting units and light receiving units can be arranged in the vertical direction.

  According to the present invention, it is possible to obtain an effect that a large obstacle detection area can be secured by a small number of light projecting units and light receiving units.

FIG. 1 is a front view showing an entire shutter device to which an optical obstacle detection device according to an embodiment of the present invention is attached. FIG. 2 is a side view of the shutter device of FIG. 1 viewed from the outside. FIG. 3 is an exploded perspective view of the light projecting means among the light projecting means and the light receiving means constituting the optical obstacle detection device. FIG. 4 is an exploded perspective view of the light receiving means among the light projecting means and the light receiving means constituting the optical obstacle detection device. FIG. 5 is a side view of the light receiving means as seen from the inside after assembly. 6 is a cross-sectional view taken along line S6-S6 of FIG. 7 is a cross-sectional view taken along line S7-S7 in FIG. FIG. 8 is a side view seen from the inside showing the relationship between the case and the bracket shown in FIG. FIG. 9 is a front view showing the relationship between the case and the bracket shown in FIG. 10 is a cross-sectional view taken along line S10-S10 in FIG. 11 is a cross-sectional view taken along line S11-S11 in FIG. FIG. 12 is a front view illustrating that light emitted from a plurality of light projecting units of the light projecting unit is received by a plurality of light receiving units of the light receiving unit. FIG. 13 is a conceptual diagram showing an information processing system of the optical obstacle detection device. FIG. 14 is a view similar to FIG. 11 showing an optical obstacle detection device according to another embodiment. FIG. 15 is a view similar to FIG. 10 showing a first alternative embodiment regarding the location of the light projecting means and the light receiving means. FIG. 16 is a view similar to FIG. 10 showing a second alternative embodiment regarding the location of the light projecting means and the light receiving means. FIG. 17 is a view similar to FIG. 10 showing a third alternative embodiment regarding the location of the light projecting means and the light receiving means. FIG. 18 is a front view showing a specific embodiment relating to an attachment location for a power supply unit which is an electric device related to the light projecting means and the light receiving means. 19 is a cross-sectional view taken along line S19-S19 in FIG.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated based on drawing. An opening / closing device of an embodiment described below is a shutter device in which an opening / closing body is a shutter curtain. FIG. 1 is an overall front view of a shutter device to which an optical obstacle detection device 20 according to the present embodiment is attached. This shutter device is a garage shutter device. For this reason, the structure in which the shutter device with the optical obstacle detection device 20 according to the present embodiment is installed is a garage.

  As shown in FIG. 1, a vehicle entrance / exit 3 is formed in a garage that is a structure, and a front surface (garage outer surface) and a rear surface (garden inner surface) of a housing 10 on both sides of the vehicle entrance 3. Among them, the left and right guide rails 2 serving as guide members for guiding the opening and closing movement of the shutter curtain 1 of the garage shutter device in the vertical direction are arranged on the surface. Both left and right end portions are slidably inserted into the left and right guide rails 2. A shutter case 4 is provided at the upper part of the vehicle doorway 3 that is an opening that is opened and closed by the shutter curtain 1, and the upper end of the shutter curtain 1 inserted into the shutter case 4 is the interior of the shutter case 4. Are coupled to a take-up shaft 5 stored horizontally.

  In addition, the housing 10 of this embodiment is a garage wall.

  The winding shaft 5 includes a central shaft 5A that is unrotatably bridged between the bracket portions 4A and 4B at the left and right ends of the shutter case 4, and a rotating body 5B that is rotatably disposed on the outer periphery of the central shaft 5A. Since the upper end of the shutter curtain 1 is coupled to the outer surface of the rotating body 5B, the shutter curtain 1 can be wound around the rotating body 5B by the rotation of the rotating body 5B and can be fed out. Yes. An opening / closing device 6 comprising a combination of an electric motor and a brake is attached to the center shaft 5A inside the rotating body 5B. The opening / closing device 6 is attached to the rotating body 5B with respect to the center shaft 5A by the electric motor and the brake. The forward / reverse rotation and the stop are performed. The forward / reverse rotation of the rotating body 5B causes the shutter curtain 1 to be wound and unwound by the rotating body 5B. When a wired operating device (not shown) or a wired operating device attached to the wall of the garage near the shutter device is operated, the control device 7 to which a signal from the operating device is input causes the switch 6 The electric motor and the brake are electrically controlled, so that the shutter curtain 1 performs opening / closing movement by winding and feeding of the rotating body 5B and movement stop.

  10 and 11 are a cross-sectional view taken along a line S10-S10 and a cross-sectional view taken along a line S11-S11 in FIG. 1. As shown in these figures, the left and right guide rails 2 are provided on both the left and right sides of the vehicle entrance / exit 3. It fixes to the pillar 11 which comprises the housing 10 of this invention with the fixing tools 12, such as a screw nail. Further, on the outer surface of each guide rail 2, a wiring rail 13, which is a hollow member having a hollow inside, is fixed by a fastening tool 14 such as a rivet. The wiring rail 13 is guided by the fastening tool 14. The rail body 15 is fixed to the outer surface of the rail 2, and the lid body 16 is fixed to the rail body 15 with a fastening tool 17 such as a rivet and closes the opening of the rail body 15.

  The optical obstacle detection apparatus 20 shown in FIG. 1 includes a light projecting unit 21 and a light receiving unit 22, and of these light projecting unit 21 and light receiving unit 22, the light projecting unit 21. Is arranged on the outer surface of the light emitting side wiring rail 13A among the left and right wiring rails 13A, 13B, and the light receiving means 22 is arranged on the outer surface of the light receiving side wiring rail 13B. For this reason, the width direction of the shutter curtain 1 that is orthogonal to or substantially orthogonal to the vertical direction that is the opening and closing direction of the shutter curtain 1 at or near the vehicle entrance 3 that is an opening that is opened and closed by the shutter curtain 1 The light projecting means 21 is disposed on one of the two sides, and the light receiving means 22 is disposed on the other side. The light projecting means 21 and the light receiving means 22 have a width of the shutter curtain 1. Opposite direction.

  The light projecting means 21 and the light receiving means 22 are arranged on the left and right guide rails 2 attached to the surface of the housing 10 for guiding the up and down movement of the shutter curtain 1. The light projecting means 21 and the light receiving means 22 are effectively attached to the surface using the guide rail 2.

  In this embodiment, as can be seen from FIG. 2, the vertical length of the wiring rail 13 is shorter than the vertical length of the guide rail 2. The upper end of the wiring rail 13 reaches the same height as the upper end of the guide rail 2 extending to the inside of the shutter case 4, but the shutter curtain 1 is fully closed at the lower end of the wiring rail 13. Sometimes the lower end of the shutter curtain 1 does not extend to the floor 3A of the vehicle entrance / exit 3, and there is a gap between the lower end of the wiring rail 13 and the floor 3A. The light projecting means 21 and the light receiving means 22 are arranged on the outer surface of the wiring rail 13 such that the lower ends of these means 21 and 22 are at the same or substantially the same height as the lower end of the wiring rail 13.

  Unlike the above, the vertical length of the wiring rail 13 and the vertical lengths of the light projecting means 21 and the light receiving means 22 may be set to reach the floor 3A.

  FIG. 3 is an exploded perspective view of the light projecting means 21, and FIG. 4 is an exploded perspective view of the light receiving means 22. These means 21 and 22 have a symmetrical shape and structure. That is, the light projecting means 21 and the light receiving means 22 are a case 30 that is a hollow member that is long in the vertical direction, which is the opening and closing direction of the shutter curtain 1, and the upper and lower brackets that support the upper and lower ends 30D and 30E of the case 30. 31 and 32, and plastic caps 33 and 34 that cover the upper and lower brackets 31 and 32 including the upper and lower end portions 30 </ b> D and 30 </ b> E of the case 30.

  The case 30 is an extruded product or a pultruded product made of aluminum or an aluminum alloy, and as can be seen from FIG. 7 which is a cross-sectional view taken along line S7-S7 in FIG. A flat portion 30A is formed in a part of the case 30 in the circumferential direction, and the flat portion 30A extending over the entire length of the case 30 is curved slightly on both sides in the horizontal direction and extends outward. A pair of lip portions 30B and 30C that protrude and face each other are formed. These lip portions 30B and 30C are cut off at the upper and lower end portions 30D and 30E of the case 30 as shown in FIGS. 3 and 4, and therefore the upper and lower end portions 30D and 30E of the case 30 are cut off. Except for this, the pair of lip portions 30 </ b> B and 30 </ b> C are continuous over the entire length of the case 30.

  Further, as shown in FIGS. 3 and 4, a total of seven holes 40 </ b> A to 40 </ b> G are formed in the flat portion 30 </ b> A in the vertical direction, and a total of four holes among these holes 40 </ b> A to 40 </ b> G are formed. The holes 40A to 40D are formed with the same vertical spacing.

  A vertically long light projecting body 50 including a plurality of light projecting elements 51 is housed and fixed in the case 30 of the light projecting means 21 shown in FIG. The light projecting elements 51 provided in the light projecting body 50 are four light projecting elements 51A to 51D arranged at locations corresponding to the holes 40A to 40D of the case 30, and the light projecting body 50. The display lamp 52 is provided at a location corresponding to the hole 40E formed in the flat portion 30A. Further, in the light projecting body 50, two holes 53 are formed through the light projecting body 50 at locations corresponding to the holes 40F and 40G formed in the flat portion 30A.

  When the light projecting body 50 is housed in the case 30 of the light projecting means 21, a U-shaped holding member 54 is fitted to the outside of the light projecting body 50 in advance at locations corresponding to the respective holes 53. Temporarily fix with double-sided adhesive tape. Then, the light projecting main body 50 is housed in the case 30, and after the holes 40E and the display lamp 52 are aligned with the holes 40A to 40D and the light projecting elements 51A to 51D, respectively, the screws shown in FIG. Are inserted into the holes 40F and 40G of the case 30 and the hole 53 of the light projecting body 50, and these fasteners 55 are screwed into the screw holes formed in the rear surface portion of the holding member 54 (light reception). (See FIG. 7 showing the means 22 side). Thereby, the light projecting body 50 is housed and fixed inside the case 30 of the light projecting means 21.

  A vertically long light receiving body 60 having a plurality of light receiving elements 61 is housed and fixed in the case 30 of the light receiving means 22 shown in FIG. The light receiving elements 61 provided in the light receiving body 60 are four light receiving elements 61A to 61D arranged at locations corresponding to the holes 40A to 40D of the case 30. The light receiving body 60 is provided with display lamps 62 at locations corresponding to the holes 40E formed in the flat portion 30A, and locations corresponding to the holes 40F and 40G formed in the flat portion 30A. The two holes 63 are formed through the light receiving body 60.

  Even when the light receiving body 60 is housed in the case 30 of the light receiving means 22, the U-shaped holding member 54 is fitted to the outside of the light receiving body 60 at positions corresponding to the respective holes 63 in advance. Temporarily fix with adhesive tape. Then, the light receiving body 60 is housed in the case 30, and the holes 40E and the display lamps 62 are aligned with the holes 40A to 40D and the light receiving elements 61A to 61D, respectively. The fasteners 55 are inserted into the holes 40F and 40G of the case 30 and the holes 63 of the light receiving body 60, and these fasteners 55 are screwed into the screw holes formed in the rear surface portion of the holding member 54. Thus, the light receiving body 60 is housed and fixed inside the case 30 of the light receiving means 22, and the state at this time is shown in FIG.

  As shown in FIGS. 3 and 4, the upper and lower brackets 31 and 32 described above are formed by punching and bending a sheet metal, and have a vertically symmetrical shape. The upper bracket 31 has an L-shape including a horizontal portion 31A and an upright portion 31B that rises upward from the rear end portion of the horizontal portion 31A. The upper end portion 30D of the case 30 is inserted into the horizontal portion 31A. A hole 70 is formed, and a rising portion 71 by cutting and raising is provided in a part of the outer peripheral portion of the hole 70, and the upper end of the rising portion 71 is parallel or substantially parallel to the horizontal portion 31 </ b> A. A presser portion 71A is provided. In addition, two large and small holes 72 and 73 are formed in the standing portion 31B, and protrusions 74 are provided on both the left and right sides of the standing portion 31B.

  The lower bracket 32 has an inverted L-shape comprising a horizontal portion 32A and a hanging portion 32B that hangs downward from the rear end portion of the horizontal portion 32A. The horizontal portion 32A includes a lower end portion 30E of the case 30. Is formed, and an extending portion 81 extending downward by cutting and raising is provided in a part of the outer peripheral portion of the hole 80. A horizontal portion 32A is provided at the lower end of the extending portion 81. A pressing portion 81 </ b> A is provided that is parallel or substantially parallel to. The hanging portion 32B has two large and small holes 82 and 83, and protrusions 84 are provided on both the left and right sides of the hanging portion 32B.

  As described above, the light projecting body 50 is housed and fixed inside the light projecting side case 30, and after the light receiving body 60 is housed and fixed inside the light receiving side case 30, as shown in FIGS. In order to support the case 30 with the upper and lower brackets 31, 32, the lower end portion 30 </ b> E of the case 30 is inserted into the hole 80 of the lower bracket 32, and the lower surface of the case 30 is pressed against the pressing portion 81 </ b> A of the extension portion 81. Put on the top. Further, the upper end portion 30 </ b> D of the case 30 is inserted into the hole 70 of the upper bracket 31, and the pressing portion 71 </ b> A of the rising portion 71 is placed on the upper surface of the case 30. Next, a coupling tool 85 such as a screw shown in FIGS. 3, 4, 8, and 9 is screwed into the screw holes formed in the extending portion 81 and the rising portion 71, and this coupling tool 85. Are screwed in until the tip of the coupler 85 is pressed firmly against the outer peripheral surface of the case 30.

  As a result, the upper and lower brackets 31 and 32 are coupled to the respective cases 30.

  Next, fasteners 86 such as rivets shown in FIGS. 3 and 4 are inserted into the holes 73 and 83 of the upper and lower brackets 31 and 32, and these fasteners 86 are inserted in FIGS. 10 and 11. The light emitting side wiring rail 13 </ b> A and the light receiving side wiring rail 13 </ b> B described above are inserted and fixed at locations facing the locations where the light projecting means 21 and the light receiving means 22 are disposed. Accordingly, the upper and lower brackets 31 and 32 are attached to predetermined locations of the respective wiring rails 13, and each case 30 in which the light projecting main body 50 and the light receiving main body 60 are housed and fixed is provided in the upper and lower brackets. It is attached to the wiring rails 13 </ b> A and 13 </ b> B via these brackets 31 and 32 while being supported by 31 and 32.

  In addition, these wiring rails 13A and 13B are immovable members which are immovable with respect to the shutter curtain 1 which opens and closes like the guide rail 2 described above.

  Also, as shown in FIG. 3, an electric cable 56 having an end connected to the light projecting body 50 and extending upward from the upper end of the light projecting body 50 is connected to the hole 72 of the upper bracket 31 and the hole. 72 is inserted into a hole formed in the lid member 16 of the light projecting side wiring rail 13A in advance so that the electric cable 56 of the light projecting main body 50 is, as shown in FIG. It is wired inside the light emitting side wiring rail 13A.

  Also, as shown in FIG. 4, an electric cable 66 having an end connected to the light receiving body 60 and extending upward from the upper end of the light receiving body 60 is connected to the hole 72 of the upper bracket 31 and the hole 72. Correspondingly, the electric cable 66 of the light receiving body 60 is inserted into the hole formed in the lid member 16 of the light receiving side wiring rail 13B in advance so that the light receiving main body 60 has an electric cable 66 as shown in FIG. It will be wired inside 13B. FIG. 9 shows a state in which the electric cable 66 is inserted into the hole 72 of the upper bracket 31.

  Thereafter, the upper and lower brackets 31 and 32 are covered with the upper and lower caps 33 and 34 shown in FIGS. 3 and 4, and the holes provided in these caps 33 and 34 are shown in FIGS. The fastening tool 57 such as a screw is passed through, and the fastening tool 57 is screwed into the screw holes of the projecting pieces 74 and 84 of the upper and lower brackets 31 and 32. Accordingly, the caps 33 and 34 are attached to the upper and lower brackets 31 and 32, respectively.

  Through the above operation, the light projecting means 21 and the light receiving means 22 shown in FIG. 1 are assembled. FIG. 5 shows an inner side view of the light receiving means 22 at this time as seen from the light projecting means 21 side.

  In addition, before attaching each cap 33 and 34 to the upper and lower brackets 31 and 32 with the fastener 57, these brackets 31 and 32 and each case 30 upper and lower end part 30D and 30E are couple | bonded. By loosening the coupler 85 of FIGS. 6, 8, and 9, the case 30 can be rotated with respect to the upper and lower brackets 31, 32 as indicated by the arrows in FIG. This rotation is a horizontal or substantially horizontal rotation about an axis extending in the vertical direction that is parallel or substantially parallel to the opening / closing direction of the shutter curtain 1.

  As described above, the work for attaching the light projecting means 21 and the light receiving means 22 to the lid member 16 of the wiring rail 13 by the upper and lower brackets 31 and 32 may be performed at the construction site of the shutter device, or at the factory. The light projecting means 21 and the light receiving means 22 are previously attached to the lid member 16 separated from the rail main body 15 of the wiring rail 13 by the upper and lower brackets 31 and 32, and the lid member 16 is attached at the construction site of the shutter device. You may make it fix to the rail main body 15 of the wiring rail 13 with the fixing tool 17 shown by FIG.10 and FIG.11.

  According to the latter, the work of attaching the light projecting means 21 and the light receiving means 22 to the lid member 16 of the wiring rail 13 can be easily performed at the factory, and the efficiency of this work can be improved. In addition, since the light receiving means 22 and the cover member 16 can be unitized and transported from the factory to the construction site of the shutter device, the handling is easy, and the inside is a hollow portion, which is also the above-mentioned stationary member. The operation of housing and wiring the electric cables 56 and 66 inside the respective wiring rails 13A and 13B can be easily performed at the construction site of the shutter device.

  The electric cables 56 and 66 wired inside the light emitting side wiring rail 13A and the light receiving side wiring rail 13B are arranged inside the shutter case 4 of FIG. 1 and connected to a battery 96 charged from a commercial power source. Further, the electric cable 66 is connected to a determination device 97 disposed inside the shutter case 4. Further, as described above, when the display lamp 52 is provided in the light projecting body 50, the light projecting body 50 and the light receiving body 60 are electrically connected by a connection cable.

  FIG. 13 is a conceptual diagram showing an information processing system for the optical obstacle detection apparatus 20 according to the present embodiment. The determination device 97 is connected to the control device 7 described with reference to FIG. 1, and this control device 7 is a drive device for opening and closing and stopping the shutter curtain 1 based on a determination signal from the determination device 97. The above-described opening / closing device 6 is drive-controlled.

  In FIG. 1 and FIG. 13, the determination device 97 is shown as a device different from the control device 7, but the determination device 97 may constitute a part of the control device 7.

  As shown in FIG. 13, the light projecting unit 21 of the optical obstacle detection device 20 is provided with a light projecting unit 90 that emits a light beam, and the light receiving unit 22 receives the light. A portion 91 is provided.

  The light projecting unit 90 according to the present embodiment includes the four light projecting units in FIG. 12 configured by the light projecting elements 51A to 51D of the light projecting body 50 and the holes 40A to 40D of the case 30 described in FIG. 90A to 90D, and these light projecting units 90A to 90D are arranged at equal intervals or substantially equal intervals in the vertical direction. Further, the light receiving unit 91 according to the present embodiment includes the four light receiving units 91A to 91D of FIG. 12 configured by the light receiving elements 61A to 61D of the light receiving body 60 and the holes 40A to 40D of the case 30 described in FIG. The light receiving portions 91A to 91D are also arranged at equal intervals or substantially equal intervals in the vertical direction, and the light projecting portions 90A to 90D and the light receiving portions 91A to 91D are arranged in the width direction of the shutter curtain 1. It faces in a certain horizontal direction or substantially horizontal direction. The intervals between the light projecting portions 90A to 90D and the intervals between the light receiving portions 91A to 91D are equal or substantially equal.

  Further, the light 92 emitted from the four light projecting units 90 toward the light receiving unit 91 is the four lights 92A to 92D in FIG. 12, and these light 92A to 92D are the opening and closing directions of the shutter curtain 1. The up-and-down direction and the front-and-rear direction that is the thickness direction of the shutter curtain 1 are expanded light that expands at least in the up-down direction. Further, the upper and lower enlarged ranges of the light 92A to 92D in the light receiving means 22 are W1 to W4, and these enlarged ranges W1 to W4 are at least twice the interval between the light receiving portions 91A to 91D as can be seen from FIG. It has a length of. The dimensions of the enlarged ranges W1 to W4 may be the same or substantially the same.

  Therefore, in FIG. 12, the light 92A emitted from the light projecting unit 90A is received by the light receiving units 91A and 91B, and the optical axis of the light 92A received by the light receiving unit 91A is A, and is received by the light receiving unit 91B. The optical axis of the light 92A is indicated by B, respectively. The light 92B emitted from the light projecting unit 90B is received by the light receiving units 91A, 91B, and 91C. The optical axis of the light 92B received by the light receiving unit 91A is C, and the light 92B received by the light receiving unit 91B The axis is D, and the optical axis of the light 92B received by the light receiving unit 91C is E, respectively. The light 92C emitted from the light projecting unit 90C is received by the light receiving units 91B, 91C, and 91D, the optical axis of the light 92C received by the light receiving unit 91B is F, and the light 92C received by the light receiving unit 91C The axis is G, and the optical axis of the light 92C received by the light receiving portion 91D is H, respectively. The light 92D emitted from the light projecting unit 90D is received by the light receiving units 91C and 91D, the optical axis of the light 92D received by the light receiving unit 91C is I, and the optical axis of the light 92D received by the light receiving unit 91D is J, respectively.

  The light 92 received by each of the light receiving units 91A to 91D is photoelectrically converted, and an electric signal (current or voltage) is sent to the determination device 97 in FIG.

  When the obstacle 95 shown in FIG. 1 does not exist in the aforementioned vehicle entrance / exit 3 that is an opening that is opened and closed by the shutter curtain 1, all the optical axes A to J are not blocked. All the light receiving portions 91 </ b> A to 91 </ b> D send electrical signals by photoelectric conversion to the determination device 97. On the other hand, when the obstacle 95 exists at the vehicle entrance 3, some of the optical axes A to J are selected according to the location where the obstacle 95 exists and the size of the obstacle 95. Since the optical axis is cut off, the total amount of light received by the light receiving units 91A to 91D is reduced, thereby changing to an electrical signal sent from the light receiving units 91A to 91D to the determination device 97 (decrease in current and voltage). Occurs. In other words, a change occurs in the information regarding the light transmitted from the light receiving units 91A to 91D to the determination device 97, and accordingly, the presence of the obstacle 95 at the vehicle entrance 3 is received by the light receiving units 91A to 91D. The determination is performed by a determination device 97 that is a device for determining a change in information about light, and this determination signal is sent to the control device 7.

  Thereby, the control device 7 configured by an electric circuit such as a computer or a relay performs drive control on the opening / closing device 6 that is a drive device of the shutter curtain 1. For example, when the shutter curtain 1 is closed and moved, the drive control is performed by stopping the closing movement, or by temporarily stopping the closing movement and then moving the shutter curtain 1 by a short distance. The shutter curtain 1 is turned upside down, and when the shutter curtain 1 is stopped at the fully open position, the shutter at the fully open position can be operated even if the operation of closing and moving the shutter curtain 1 with the operation device described above is performed. It is to continue the stop of the curtain 1.

  The light 92 from the light projecting units 90A to 90D is emitted by the control of the control device 7, so that the control device 7 closes and moves the shutter curtain 1 from the fully open position or the like by the operation of the operation device described above. The light 92 may be emitted from the light projecting units 90A to 90D under the control of the control device 7, or the light 92 may be constantly emitted from the light projecting units 90A to 90D. When the light 92 is always emitted from the light projecting unit 90, even when at least a part of the optical axes A to J is interrupted when the shutter curtain 1 is fully closed, The control device 7 that receives a signal from a sensor (not shown) that detects whether the shutter curtain 1 is fully closed does not perform drive control of the shutter curtain 1 and keeps the shutter curtain 1 in a fully closed state.

  In addition, the electrical signals sent from the respective light receiving portions 91A to 91D to the discriminating device 97 are sent separately for each of the light receiving portions 91A to 91D, whereby the discriminating device 97 includes the optical axes A to J. It may be possible to determine which optical axis is blocked by the obstacle 95. According to this, for example, the control device 7 performs control such as stopping the closing movement of the shutter curtain 1 immediately before the obstacle 95, the location where the obstacle 95 exists, the size of the obstacle 95, etc. Information about can be notified by an alarm device (not shown).

  Furthermore, for example, an identification signal with a different wavelength or number of pulses is given to the light 92A to 92D emitted from each of the light projecting units 90A to 90D, so that any one of the optical axes A to J can be selected. It may be possible to determine by the determination device 97 whether or not is blocked.

  According to the present embodiment described above, the number of light projecting portions 90 of the light projecting means 21 is four 90A to 90D, and the number of light receiving portions 91 of the light receiving means 22 is also four 91A to 91D. Since the number of optical axes used to determine the presence or absence of 95 is 10 A to J, a small number of light projecting units 90 and light receiving units are arranged in a large obstacle detection area in the vehicle entrance 3. 91 can be secured.

  Further, as described above, each case 30 in which the light projecting main body 50 and the light receiving main body 60 are housed and fixed is loosened by the above-described coupler 85 so that the upper and lower brackets 31 and 32 are vertically moved. Since the rotation adjustment is possible around the extending axis, the pillar 11 constituting the housing 10 of FIG. 10 to which the light projecting means 21 and the light receiving means 22 are attached is the two-dot chain lines 11 ′ and 11 of FIG. As shown by "", even if it is arranged with an error in the rotation direction around the axis extending in the vertical direction, the case 30 of the light projecting means 21 and the light receiving means 22 is corrected to the housing 10 by correcting this error. Accordingly, the ten optical axes A to J described above can be the original optical axes that reach the light receiving means 22.

  In this embodiment, when the error is corrected, the optical axes A to J by the light 92A to 92D described above are generated between the light projecting units 90A to 90D and the light receiving units 91A to 91D. Further, by providing an electric circuit for turning off or turning on the display lamps 52 and 62 provided in the light projecting body 50 and the light receiving body 60, the light projecting units 90A to 90D and the light receiving units 91A to 91D face each other as predetermined. Can be confirmed.

  The display lamp may be provided only in the light receiving means 22 and the light projecting means 21 may not be provided with a display lamp.

  Moreover, in this embodiment, since the member in which the light projection means 21 and the light reception means 22 are arrange | positioned is the wiring rail 13 by which the inside becomes a cavity part and becomes the above-mentioned stationary member, the light projection means 21 The electric cables 56 and 66 of the light projecting means 21 and the light receiving means 22 can be housed and wired inside the member for arranging the light receiving means 22, and the electric cables 56 and 66 are protected by the wiring rails 13. Can do.

  Furthermore, since the wiring rail 13 extends to the inside of the shutter case 4, the electric cables 56, 66 are electric devices for the optical obstacle detection device 20 arranged inside the shutter case 4, specifically The battery 96, the determination device 97, and the control device 7 can be wired without being exposed to the outside.

  Since the wiring rail 13 has a vertical length that extends over at least the entire length of the light projecting means 21 and the light receiving means 22, the case 30 of the light projecting means 21 and the light receiving means 22 is attached to these wiring rails 13. The two upper and lower brackets 31 and 32 for attachment can be made the same in size and shape by simply turning them upside down.

  The hole 72 provided in the upper bracket 31 is used for wiring the electric cables 56 and 66 inside the wiring rail 13 as described above, but the hole 82 provided in the lower bracket 32 is used. Therefore, the hole 82 may not be provided in the bracket 32.

  However, by providing the hole 82 in the bracket 32, the two upper and lower brackets 31 and 32 can be made into the same member with the same size and shape, so that only one type of bracket must be produced, Management of the bracket can be facilitated, and when the case 30 is attached to the lid member 16 of the wiring rail 13 using the bracket, the attachment work can be performed without distinguishing the bracket, thereby improving workability. Can do.

  Further, in the present embodiment, as described with reference to FIGS. 3 and 4, these cases are provided on both sides of the hole 40 of the case 30 where the light projecting element 51 of the light projecting body 50 and the light receiving element 61 of the light receiving body 60 face. Since the pair of lip portions 30B and 30C in FIG. 7 projecting outward from the outer peripheral surface of 30 is provided, the light projecting portion 90 and the light receiving portion 91 are more specifically defined by these lip portions 30B and 30C. The light projecting element 51 of the light projecting body 50 and the light receiving element 61 of the light receiving body 60 can be protected from wind and rain and dust.

  In the embodiment of FIG. 14, the light projecting means 21 and the light receiving means 22 are provided with a cover 98 that covers the outer surface between the upper and lower brackets 31 and 32 outside the case 30. These covers 98 having a vertical length corresponding to the distance between the upper and lower brackets 31 and 32 are fixed to the lid member 16 of the wiring rail 13 by a fixing tool 99 such as a rivet. According to this embodiment, the case 30 of the light projecting means 21 and the light receiving means 22 can be protected from wind and rain or dust by the cover 98.

  Moreover, in this embodiment, you may attach the lighting fixture 100 to the inner surface which each cover 98 mutually opposes. According to this, at night, a person who drives the vehicle can recognize the positions of the left and right guide rails 2 with the light of the lighting fixture 100.

  In the embodiment described above, the light projecting means 21 and the light receiving means 22 are arranged via the wiring rails 13 in order to make the arrangement positions of the light projecting means 21 and the light receiving means 22 correspond to the arrangement positions of the left and right guide rails 2. Although attached to the left and right guide rails 2, FIGS. 15 to 17 show that the light projecting means 21 and the light receiving means 22 are arranged in correspondence with the positions of the left and right guide rails 2. An embodiment is shown in which the light receiving means 22 is arranged at a location different from the location where the left and right guide rails 2 are arranged.

  In the embodiment shown in FIG. 15, the left and right wiring rails 13 are not attached to the left and right guide rails 2. In FIG. 15, the place where the guide rail 2 is attached is the surface outside the garage of the housing 10 of the garage, that is, the surface of the housing 10 as in the above-described embodiment shown in FIG. The wiring rail 13 is attached to the inner surface of the housing 10 of the housing 10, that is, the back surface of the housing 10 by a fastening device 100 such as a screw nail. Therefore, the light projecting means 21 and the light receiving means 22 It is arranged on the back surface of the housing 10 via the left and right wiring rails 13. Therefore, the optical obstacle detection apparatus 20 of this embodiment is installed not in the garage outside but in the garage inside.

  As described above, the optical obstacle detection device 20 according to the present embodiment can be attached to either the inside or outside of the housing 10 such as a wall as long as it is a location corresponding to the location where the guide rail 2 is arranged.

  In the embodiment of FIG. 16, the left and right wiring rails 13 are attached to the inner side surface of the housing 10 provided on both the left and right sides of the vehicle entrance 3 by the fastening device 100. The light means 21 and the light receiving means 22 are arranged on the housing 10 in a state of protruding toward the vehicle entrance 3.

  In the embodiment of FIG. 17, among the left and right wiring rails 13, the light projecting side wiring rail 13 </ b> A on which the light projecting means 21 is arranged is formed on the surface inside the garage of the housing 10 as in the embodiment of FIG. 15. Since it is attached, the light projecting means 21 is also arranged on the inner surface of the garage of the housing 10, but the light receiving side wiring rail 13B is attached to the inner surface of the housing 10, and in this embodiment, Only the light receiving means 22 is arranged on the housing 10 in a state of protruding toward the vehicle entrance 3.

  In the embodiment of FIG. 17, the light receiving side wiring rail 13 </ b> B is attached to match the light emitting means 21 and the light receiving means 22 in the front-rear direction which is the thickness direction of the shutter curtain 1. 10 is provided with a dimension enlarged portion 10A whose dimension in the front-rear direction is increased by the pillar 101 or the like, and the light receiving means 22 is disposed in the dimension enlarged portion 10A via the light receiving side wiring rail 13B.

  In the embodiment of FIG. 17, the case 30 in which the light receiving body 60 of the light receiving means 22 shown in FIG. 4 is housed is fixed in the opening / closing direction of the shutter curtain 1 with respect to the upper and lower brackets 31 and 32. Is rotated 90 degrees around an axial line that is parallel or substantially parallel to the top and bottom, so that the position of the light projecting section 90 of the light projecting means 21 and the position of the light receiving section 91 of the light receiving means 22 are changed back and forth. In the direction, the light projecting unit 90 and the light receiving unit 91 are opposed to each other in the left-right direction, which is the width direction of the shutter curtain 1.

  As can be seen from the embodiment of FIG. 17, as described above, the case 30 of the light projecting means 21 in which the light projecting body 50 is housed and fixed, and the case of the light receiving means 22 in which the light receiver body 60 is housed and fixed. The rotation direction of the light projecting means 21 and the light receiving means 22 in the horizontal direction or the substantially horizontal direction when arranged on the housing 10 is made possible by adjusting the rotation about the axis line extending vertically with respect to the upper and lower brackets 31, 32. Can be set arbitrarily.

  When the left and right wiring rails 13 are attached to the rear surface of the housing 10 where the guide rails 2 are not disposed as shown in FIGS. 15 to 17, these wiring rails 13 are connected to these wiring rails 13. When projections or the like for positioning the rails 13 on the guide rails 2 are provided, projections or the like that are not necessary when attaching to the back surface of the housing 10 may be cut off. When a protrusion or the like for positioning or the like is required on the housing 10 instead of the rail 2, such a protrusion or the like may be provided on the wiring rail 13.

  In the embodiment of FIG. 18, a specific embodiment of the mounting location for the power supply unit 121 that is an electrical device related to the light projecting means 21 and the light receiving means 22 is shown. The power supply unit 121 corresponds to the battery 96 shown in FIG. 1 and is charged by a commercial power supply. 19 is a cross-sectional view taken along line S19-S19 in FIG.

  18, among the left and right bracket portions 4A and 4B of the shutter case 4 described in FIG. 1, the bracket portion 4A includes the bracket member 102 and the decorative cover 103 that covers the outer surface and the upper and lower surfaces of the bracket member 102. In addition, as described above, the winding shaft 5 is disposed so as to be non-rotatable and rotatably disposed outside the central shaft 5A. It is also shown that it is configured to include the rotating body 5B. The rotating body 5B to which the upper end of the shutter curtain 1 is coupled includes a wheel member 104 in which a plurality of wheel members 104 are arranged in the left-right direction which is the width direction of the shutter curtain 1, and a bar connecting these wheel members 104 to each other. The wheel member 104 is supported on the central shaft 5A by a base member 106 attached to the central shaft 5A via a rotatable bearing 107 such as a ball bearing. Therefore, the rotating body 5B is rotatable with respect to the central axis 5A.

  The end portion of the central shaft 5A on the bracket portion 4A side is supported by a bearing member 108 fixed to the bracket member 102, and the bearing member 108 opens upward as shown in FIG. The protruding portion 108 </ b> A joined to the bracket member 102 by welding, screws, or the like is provided on both sides and the lower portion in the thickness direction of the shutter curtain 1. The end of the central shaft 5A is coupled to the bearing member 108 by a coupling 109 such as a screw, and therefore the central shaft 5A is not rotatable. Of the left and right bracket portions 4A and 4B of the shutter case 4 described in FIG. 1, the coupling structure of the central shaft 5A in the bracket portion 4B is also the same as in FIGS.

  As shown in FIG. 18, the opening / closing device 6 comprising the combination of the electric motor and the brake described in FIG. 1 is attached to the central shaft 5A, and this attachment is a bracket coupled to the central shaft 5A. This is done by connecting the switch 6 to the member 110. A pinion gear 113 is coupled to the drive shaft 6A of the electric motor of the opening / closing machine 6 via a coupling member 112. The pinion gear 113 is rotatably disposed on the bracket member 110 and is connected to the central shaft 5A. It meshes with the internal teeth of the ring gear 114 that is rotatable. Since this ring gear 114 is engaged with the connecting member 105 that is a constituent member of the rotating body 5B, when the drive shaft 6A of the electric motor of the opening / closing device 6 rotates forward and backward, the rotating body 5B Forward / reverse rotation for winding and unwinding the shutter curtain 1 is performed on the central axis 5A.

  A control device 127 is attached to the bracket member 110 and the opening / closing device 6 by connecting members 111A and 111B, and the opening / closing device 6 is electrically controlled in the same manner as the control device 7 shown in FIG. The control device 127 according to this embodiment includes the determination device 97 shown in FIG.

  In addition, the outer peripheral surface of the rotating body 5B of the present embodiment is covered with a cover member 120 made of a transparent plastic sheet, and thus, for example, the garage shutter device according to the present embodiment is used near a coast. Even in this case, the central shaft 5A, the switch 6, the control device 127, etc. can be protected from salt damage.

  The power supply unit 121, which is an electric device for supplying electricity to the light projecting means 21, the light receiving means 22, and the control device 127, is a member that covers the central shaft 5A from above, and is used for bending a sheet metal. It is attached to the central shaft 5A by a bracket member 115 which is a product. In this attachment, as shown in FIG. 19, a locking portion 115A formed at one end of the bracket member 115 in the thickness direction of the shutter curtain 1 is locked to the power supply unit 121, and the other end is fixed. The center shaft 5A is clamped between the power supply unit 121 and the bracket member 115 by fastening the part and the power supply unit 121 with a fastener 116 such as a screw.

  The power supply unit 121 and the control device 127 are connected by the electric cable 117 of FIG. 18, and the power supply unit 121 is connected to the light projecting means 21, the light projecting body 50 of the light receiving means 22, and the light receiving body described in FIGS. Electrical cables 56 and 66 extending from 60 and reaching the inside of the shutter case 4 by being wired inside the wiring rail 13 shown in FIG. These electric cables 56 and 66 are inserted and wired between the bracket member 102 and the decorative cover 103 from a notch formed in the lower part of the bracket member 102 constituting the bracket portion 4A. 19 passes through the wiring hole 102 </ b> A formed in the bracket member 102 shown in FIG. 19, and reaches the power supply unit 121 through the bracket member 102.

  As a result, the light projecting means 21 and the light receiving means 22 are connected to the control device 127 equipped with a discriminating device via the electric cables 56 and 66, the power supply unit 121 and the power supply cable 117. The electric cable 117 is wired through the hole formed in the base member 106 described above.

  As shown in FIG. 18, the shutter curtain 1 of the present embodiment has a left and right width dimension larger than that of the rotating body 5 </ b> B of the winding shaft 5. And the arrangement | positioning location of the power supply unit 121 in the center axis | shaft 5A of the winding shaft 5 becomes a location between the bearing member 108 attached to the bracket member 102 in order to support 5 A of central axes, and the rotary body 5B. Yes. For this reason, the place where the power supply unit 121 is arranged is a place within the range in the width direction of the shutter curtain 1, and therefore the shutter curtain 1 reaches the fully opened position or the middle position in the opening / closing movement direction. The power supply unit 121 can be protected from an external force or the like by the cylindrical portion of the shutter curtain 1 wound around the rotating body 5B of the winding shaft 5, and the shutter curtain 1 is fully closed. When the shutter curtain 1 has at least one unrolled portion of the rotator 5B when the shutter curtain 1 reaches the position, even if the shutter curtain 1 reaches the fully closed position, the unwinded portion causes the power supply unit. 121 can be effectively protected from external force or the like.

  And the location in the winding shaft 5 in which the power supply unit 121 is arrange | positioned becomes the dead space between the bearing member 108 attached to the bracket member 102 in order to support 5 A of center shafts, and the rotary body 5B. Since it is a location, the power supply unit 121 can be arranged by effectively utilizing this dead space.

  Note that the location where the control device 7 and the discriminating device 97 shown in FIG. 1 are arranged is also a location within the range of the shutter curtain 1 in the width direction, and is wound around the rotating body 5B of the winding shaft 5. Since this is a part of the shutter curtain 1 having a cylindrical shape, similarly to the power supply unit 121, the control device 7 and the discriminating device 97, which are electrical devices related to the light projecting means 21 and the light receiving means 22, are also external forces. It can protect effectively from etc.

  The optical obstacle detection device described above can be attached to an existing shutter device, and can also be attached to a housing of a structure to which the existing shutter device is attached.

  INDUSTRIAL APPLICABILITY The present invention can be used for various opening / closing devices such as a shutter device in which a shutter curtain is an opening / closing body, an awning device, and a smoke-proof banner device.

DESCRIPTION OF SYMBOLS 1 Shutter curtain which is an opening / closing body 2 Guide rail which is a guide member 3 Vehicle entrance / exit which is an opening part 6 Opening / closing machine which is a shutter curtain drive device 7,127 Control device 10 Housing 13 The inside is a stationary member in a hollow portion Wiring rail 20 Optical obstacle detection device 21 Light projecting means 22 Light receiving means 30 Case 31, 32 Bracket 50 Light projecting body 51 Light projecting element 60 Light receiving body 61 Light receiving element 90 Light projecting part 91 Light receiving part 92 Light emitted from the light projecting part Light 95 Obstacle 97 Discriminating device 121 Power supply unit A to J Optical axis

Claims (12)

An opening that is opened and closed by the opening / closing body or in the vicinity of the opening, is disposed on one of both sides in the width direction of the opening / closing body that is orthogonal or substantially orthogonal to the opening / closing direction of the opening / closing body, and includes a light projecting unit In the optical obstacle detection device for an opening / closing device, comprising: a light projecting unit that is disposed on the other side; ,
The number of the light projecting units included in the light projecting unit is at least one, and the number of the light receiving units included in the light receiving unit is arranged with an interval in the opening / closing direction of the opening / closing body. The light emitted from the light projecting unit can be received by the plurality of light receiving units, and for determining the change in information about the light received by these light receiving units. An optical obstacle detection device for a switchgear comprising a discrimination device. An opening that is opened and closed by the opening / closing body or in the vicinity of the opening, is disposed on one of both sides in the width direction of the opening / closing body that is orthogonal or substantially orthogonal to the opening / closing direction of the opening / closing body, and includes a light projecting unit In the optical obstacle detection device for an opening / closing device, comprising: a light projecting unit that is disposed on the other side; ,
The number of the light projecting units provided in the light projecting unit is a plurality arranged at intervals in the opening and closing direction of the opening and closing body, and the number of the light receiving units provided in the light receiving unit is Discrimination for discriminating a change in information relating to light received by the light receiving unit, wherein at least one light emitted from the plurality of light projecting units can be received by the light receiving unit. An optical obstacle detection device for a switchgear comprising the device. An opening that is opened and closed by the opening / closing body or in the vicinity of the opening, is disposed on one of both sides in the width direction of the opening / closing body that is orthogonal or substantially orthogonal to the opening / closing direction of the opening / closing body, and includes a light projecting unit In the optical obstacle detection device for an opening / closing device, comprising: a light projecting unit that is disposed on the other side; and a light receiving unit that is provided on the other side and that includes a light receiving unit that receives light emitted from the light projecting unit ,
The number of the light projecting units provided in the light projecting unit is a plurality arranged at intervals in the opening and closing direction of the opening and closing body, and the number of the light receiving units provided in the light receiving unit is also A plurality of light emitting units arranged in the opening / closing direction of the opening / closing body, and light emitted from a plurality of light projecting units out of the plurality of light projecting units. The light receiving units can receive light by a plurality of light receiving units, and the light receiving units arranged at intervals in the opening / closing direction of the opening / closing body can receive light. An optical obstacle detection device for a switchgear, comprising: a discrimination device for discriminating a change in information relating to light received by the unit.   The optical obstacle detection apparatus for an opening / closing device according to any one of claims 1 to 3, wherein at least one of the light projecting means and the light receiving means is an axis parallel or substantially parallel to an opening / closing direction of the opening / closing body. An optical obstacle detection device for an opening / closing device, characterized in that it can be pivotally adjusted around the center.   5. The optical obstacle detection device for an opening / closing apparatus according to claim 4, wherein the light projecting means has a light projecting body, and the light receiving means has a light receiving body, and among these bodies, The main body on one side is housed and fixed in a case having a length in the opening / closing direction of the opening / closing body, and the case rotates around an axis parallel or substantially parallel to the opening / closing direction of the opening / closing body. By being capable of dynamic adjustment, at least one of the light projecting means and the light receiving means can be pivotally adjusted around an axis parallel or substantially parallel to the opening / closing direction of the opening / closing body. An optical obstacle detection device for an opening / closing device.   The optical obstacle detection device for an opening / closing device according to claim 5, wherein the case is coupled to a stationary member that is stationary relative to the opening / closing body that is opened / closed via a bracket, An optical obstacle detection device for an opening / closing device, wherein the optical obstacle detection device can be rotated and adjusted about an axis parallel to or substantially parallel to the opening / closing direction of the opening / closing body with respect to the bracket.   7. The optical obstacle detection device for an opening / closing device according to claim 1, wherein the light projecting means and the light receiving means are arranged on two immovable members which are immovable with respect to the opening / closing body which is opened and closed. At least one of these immovable members is a cavity, and an electric cable having an end connected to at least one of the light projecting means and the light receiving means is accommodated in the cavity. An optical obstacle detection device for a switchgear characterized by being wired.   8. The optical obstacle detection device for an opening / closing device according to claim 1, wherein the opening / closing body is disposed on both sides in the width direction of the opening / closing body orthogonal to or substantially orthogonal to the opening / closing direction of the opening / closing body. An optical obstacle detection device for an opening / closing device, wherein the light projecting device and the light receiving device are arranged at locations corresponding to the locations of the guide members.   9. The optical obstacle detection device for a switchgear according to claim 8, wherein the light projecting means and the light receiving means are arranged on the guide members, respectively. apparatus.   9. The optical obstacle detection device for an opening / closing device according to claim 8, wherein each of the guide members is disposed on one of a front surface and a back surface of a structure body in which the opening is formed, An optical obstacle detection device for an opening / closing device, wherein the light means and the light receiving means are arranged on the other of the front surface and the back surface of the housing.   9. The optical obstacle detection device for an opening / closing device according to claim 8, wherein each of the guide members is disposed on one of a front surface and a back surface of a structure body in which the opening is formed, At least one of the light means and the light receiving means is disposed on the housing in a state of protruding toward the opening, and is an optical obstacle detection device for a switchgear.   12. The optical obstacle detection device for an opening / closing device according to claim 1, wherein the opening / closing body is a shutter curtain that is wound and fed by a winding shaft, and the light projecting means and / or the light receiving means. The electrical device related to the is mounted on the winding shaft, and the mounting position of the electrical device on the winding shaft is in the width direction of the shutter curtain whose end is coupled to the winding shaft. An optical obstacle detection device for a switchgear, wherein the optical obstacle detection device is located within a range.

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