Sensor mounting structure for overhead door

Abstract

To solve a problem caused by directly mounting a photoelectric sensor for an overhead door on a skeleton surface.SOLUTION: An overhead door in which a door body made up of a plurality of panels 1 connected in the height direction is moved up and down to open and close an opening such that guide rollers 2 provided at both ends of each panel 1 in the width direction are guided by left and right guide rails 3, the overhead door including a photoelectric sensor S that generates a light beam crossing the vicinity of a lower portion of the opening, the guide rails 3 including right and left vertical rails 3A provided on both sides of the opening in the width direction, each vertical rail 3A being supported by a mounting member 7 provided on a skeleton 6 so as to be supported in a cantilevered manner from the skeleton, the vertical rail 3A being provided at its lower portion with a sensor mounting base 8, the photoelectric sensor S being mounted on the sensor mounting base 8.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a sensor mounting structure for an overhead door. [Background technology]

[0002] Some electric overhead doors are equipped with a photoelectric sensor as an obstacle detection device. The photoelectric sensor generates a light beam near the bottom of the opening that crosses the opening, and when this light beam is interrupted, it detects an obstacle and stops the door opener, stopping the door body as it descends, or restricting the door body from descending from a stopped state.

[0003] Fig. 11 shows the mounting structure of a conventional photoelectric sensor. The photoelectric sensor S is positioned outside the guide rail (vertical rail 3A), and after the optical axis is positioned, it is mounted with screws to the frame surface (indoor facing surface 61). A similar mounting structure is disclosed in Patent Document 1 (Fig. 5).

[0004] In conventional mounting structures, the photoelectric sensor is attached to the surface of the body, and depending on the condition of the body surface and the size of the available space (side room dimension D), the installation of the photoelectric sensor can be time-consuming, as it also requires positioning the optical axis. [Patent Document 1] Patent Publication No. 2016-65389 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0005] The present invention aims to solve the problems that arise from directly mounting a photoelectric sensor for an overhead door on a body surface. [Means for solving the problem]

[0006] The technical means adopted by the present invention to solve such problems are as follows: In an overhead door, a door body is made up of multiple panels connected in the height direction, and guide rollers provided at both ends of each panel in the width direction are guided by left and right guide rails to move up and down to open and close the opening. the overhead door includes a photoelectric sensor that generates a light beam that traverses near a lower portion of the opening; The guide rail includes left and right vertical rails provided on both sides of the opening in the width direction, and each vertical rail is supported in a cantilevered manner from the frame by an attachment member provided on the frame, A sensor mounting base is attached to the lower portion of the vertical rail, The photoelectric sensor is attached to the sensor mount. A sensor mounting structure for an overhead door.

[0007] In one embodiment, the sensor mount is fixed to a side surface of the lower portion of the vertical rail together with the mounting member. In one aspect, the mounting member has a visible edge fixed to the body and a visible edge fixed to a side surface of the vertical rail, the sensor mount includes a visible surface portion fixed to the visible side of the mounting member, and a visible surface portion extending opposite and spaced from the visible side, The photoelectric sensor is attached to the front surface or the facing surface of the sensor mount.

[0008] In one embodiment, the mounting member comprises a plurality of mounting members spaced apart in the height direction, the vertical rail is supported by the plurality of mounting members; the sensor mounting base is an elongated member extending in a height direction, and a plurality of photoelectric sensors are mounted to the sensor mounting base at intervals in the height direction; The sensor mounting base is bridged across two lower mounting members, a first mounting member and a second mounting member, and is fixed to the side of the lower portion of the vertical rail together with the first mounting member and the second mounting member.

[0009] Other technical means adopted by the present invention are: A vertical rail assembly is formed from a vertical rail, a plurality of mounting members fixed at intervals in the height direction of the vertical rail, and a sensor mounting base fixed together with the mounting members located below at a lower portion of the vertical rail, The vertical rail assembly is transported to the site and attached to the surface of the building frame. a sensor is attached to the sensor mounting base of the vertical rail assembly attached to a body surface; A method for installing a sensor on an overhead door. [Effects of the Invention]

[0010] In the present invention, a photoelectric sensor is attached to a sensor mounting base that is attached to the vertical rail of a guide rail, so that the position of the photoelectric sensor can be brought closer to the vertical rail, making it possible to install the photoelectric sensor even in a site where the so-called side room dimensions are small.

[0011] In the present invention, a photoelectric sensor is attached to a sensor mounting base attached to the vertical rail of the guide rail, so that by attaching the sensor mounting base to a predetermined position on the vertical rail in advance and then attaching the vertical rail to the main body, the photoelectric sensor can be positioned (the optical axis can be positioned) at the same time. [Brief explanation of the drawings]

[0012] [Figure 1] 1A and 1B are a front view and a plan view of an overhead door equipped with a sensor mounting structure according to this embodiment, as viewed from the inside of the room. [Figure 2] 1 is a side view of an overhead door equipped with a sensor mounting structure according to an embodiment of the present invention. [Figure 3] 2 is a partially enlarged view of an end portion in the width direction of the front view of FIG. 1. FIG. [Figure 4] FIG. 2 is a plan view showing the upper photoelectric sensor mounting structure according to the present embodiment. [Figure 5] FIG. 2 is a plan view showing the lower photoelectric sensor mounting structure according to the present embodiment. [Figure 6] 1A and 1B are a front view and a side view showing an attachment structure for upper and lower photoelectric sensors according to an embodiment of the present invention; [Figure 7] FIG. 2 is a side view showing the vertical rail assembly according to the present embodiment attached to a body. [Figure 8] FIG. 8 is an enlarged view of the lower part of FIG. [Figure 9] FIG. 2 is a cross-sectional view of a lower portion of the vertical rail assembly according to the present embodiment. [Figure 10] 1 is a diagram showing a sensor mounting base according to the present embodiment. FIG. [Figure 11] FIG. 1 is a diagram showing a conventional sensor mounting structure. DETAILED DESCRIPTION OF THE INVENTION

[0013] Fig. 1 shows a front view and a plan view of an overhead door in a fully closed position as seen from inside the room, and Fig. 2 is a side view of the overhead door. The door body of the overhead door is composed of multiple horizontally rectangular panels 1 connected to each other so that they can rotate vertically via hinges H. Each panel 1 has vertical stiles 10 at both left and right ends in the width direction and multiple intermediate stiles 11. In two adjacent panels 1, the lower blade of the hinge H is fixed to the upper ends of the vertical stiles 10 and intermediate stiles 11 of the lower panel 1, and the upper blade of the hinge H is fixed to the lower ends of the vertical stiles 10 and intermediate stiles 11 of the upper panel 1.

[0014] Guide rollers 2 are provided on both the left and right ends of each panel 1 in the width direction. The shafts 20 of the guide rollers 2 are rotatably supported by roller brackets 21 fixed to the interior facing surface of the vertical frame 10 of the panel 1. The roller brackets 21 may be provided on hinges H fixed to the vertical frame 10 of the panel 1.

[0015] The shafts 20 of the guide rollers 2 are located at both widthwise ends of the interior facing surface of the panel 1, with the tips of the shafts 20 protruding beyond the widthwise facing surfaces (end faces) of the panel 1, and guide rollers 2 are provided at the tips of the shafts 20. The door body opens and closes the opening as the guide rollers 2 at both left and right widthwise ends of each panel 1 rise and fall while being guided by the left and right guide rails 3. In Fig. 2, the right side of the panel 1 is the interior side and the left side is the exterior side, and in Fig. 4, the lower side of the panel 1 is the interior side and the upper side is the exterior side.

[0016] As shown in FIG. 2, the guide rail 3 is composed of a first section 3A extending in the height direction of the opening, a curved second section 3B extending rearward from above the first section 3A toward the interior of the room, and a third section 3C extending rearward from behind the second section 3B along the ceiling surface. The first section 3A extends approximately vertically, but is gently inclined toward the interior of the room from below to above. In this specification, the approximately vertically extending first section 3A is referred to as the "vertical rail." The second section 3B is referred to as the "curved rail," and the third section 3C is referred to as the "horizontal rail."

[0017] In the fully closed state of the opening, each panel 1 (except the top panel 1) is positioned on the vertical rail 3A of the guide rail 3, so that the multiple panels 1 assume a vertical position and close the opening. From the fully closed state of the opening, each panel 1 is raised from the vertical position to a horizontal position where it is positioned on the horizontal rail 3C (the bottom panel 1 is positioned on the curved rail 3B), and the door body assumes a position extending laterally along the ceiling of the indoor space, thereby achieving the fully open state of the opening. In this embodiment, a second horizontal rail 3D (the front side of which is positioned above the curved rail 3B of the guide rail 3 and extends rearward, directly above the horizontal rail 3C) is provided to guide the top panel 1.

[0018] The overhead door according to this embodiment includes an opening / closing mechanism M, a trolley rail 4, and a connecting arm 40. The upper end of the connecting arm 40 is movable on the trolley rail 4, and the movement of the connecting arm 40 moves the top panel 1. Operating the opening / closing mechanism M via an operating unit (such as an operating box or remote control) causes the top panel 1 to move along the second horizontal rail 3D, thereby electrically driving the door body to move up and down. A rotating shaft 5 equipped with a balance spring 50 is disposed above the opening. One end of a winding wire is fixed to a drum 51 journaled at each end of the rotating shaft 5. The other end of the winding wire is connected to fixing portions 12 on both left and right ends of the bottom panel 1, respectively. The biasing force of the balance spring 50 in the winding direction biases the door body, which is in a fully closed position, in the opening direction (upward). Note that the above-described overhead door configuration is merely an example and does not limit the scope of the present invention.

[0019] The opening is formed between the visible surfaces 60 of the left and right bodies 6, and the vertical rail 3A of the guide rail 3 is supported in a protruding manner on the indoor side of the visible surfaces 61 of the left and right bodies 6 by mounting members 7. The mounting member 7 in this embodiment has an L-shaped cross section, consisting of a visible edge 70 that is the attachment piece to the bodies 6 (indoor side visible surfaces 61) and a visible edge 71 that is the attachment edge to the first portion (vertical rail) 3A of the guide rail 3.

[0020] In this embodiment, the vertical rail 3A of the guide rail 3 is supported in a cantilevered manner from the interior facing surface 61 of the left and right skeleton 6 by a plurality of mounting members 7A, 7B, 7C, 7D, 7E, and 7F. The facing edge 70 of each mounting member 7A, 7B, 7C, 7D, 7E, and 7F is fixed to the interior facing surface 61 of the skeleton 6 by a screw 72, and the facing edge 71 is fixed to the side of the vertical rail 3A (the portion opposite the opening that receives the guide roller 2) by a screw 73 and a nut 74. In this embodiment, a vertical rail assembly is formed in advance from the vertical rail 3A and the plurality of mounting members 7A, 7B, 7C, 7D, 7E, and 7F, and the vertical rail assembly is then attached to the skeleton surface (the interior facing surface 61).

[0021] 7, mounting members 7A, 7B, 7C, 7D, 7E, and 7F are fixed to the interior facing surface 61 of the frame 6 at intervals in the height direction, and a horizontally extending elongated hole 710 is formed in each projected edge 71 of mounting members 7A, 7B, 7C, 7D, 7E, and 7F, and the tilt posture of the vertical rail 3A of the guide rail 3 can be finely adjusted by adjusting the position of a screw 73 in the elongated hole 710. In the illustrated embodiment, the projected dimensions (the extension or protrusion dimension from the interior facing surface 61) of the two lower mounting members 7E and 7F are the same, and the projected dimensions of the upper mounting members 7D, 7C, 7B, and 7A increase successively upward.

[0022] The overhead door according to this embodiment is equipped with two photoelectric sensors S1 and S2 (sometimes collectively referred to as photoelectric sensor S) positioned near the lower portions of both ends of the opening and spaced apart in the vertical direction. Each photoelectric sensor S1 and S2 comprises a light emitter provided on one side of the width of the opening and a light receiver provided on the other side of the width of the opening, and emits two parallel light beams that cross the width direction at the lower portion of the opening. An obstacle is detected when the light beams are interrupted.

[0023] A specific example of control when an obstacle is detected will be described. If the light beam of photoelectric sensor S is blocked by an obstacle while the door body is descending, the operation of the opening and closing mechanism is stopped, and the door body stops as it descends. If the light beam of photoelectric sensor S is blocked by an obstacle while the door body is stopped at the fully open or half-open position, the operation of the opening and closing mechanism is restricted, and the door body is restricted from descending even if a close signal is sent from the operation unit. If the light beam of photoelectric sensor S is blocked by an obstacle while the door body is ascending, the door body continues to ascend and stops at the fully open position. If the light beam of photoelectric sensor S is blocked by an obstacle while the door body is stopped at the fully closed position, the door body ascends and stops at the fully open position in response to an open signal sent from the operation unit. In this embodiment, it is determined that an obstacle has been detected when at least one of the two light beams of photoelectric sensors S1 and S2 is blocked.

[0024] In this embodiment, the two photoelectric sensors S1 and S2 are attached to a common sensor mounting base 8, and the mounting base 8 is attached to the mounting member 7 and the vertical rail 3A. The mounting base 8 in this embodiment is a long member extending in the height direction, and its upper side is fixed to the side surface of the vertical rail 3A together with the projected edge 71 of the mounting member 7E by means of screws 73 and nuts 74, and its lower side is fixed to the side surface of the vertical rail 3A together with the projected edge 71 of the mounting member 7F. In this embodiment, a vertical rail assembly is formed in advance from the vertical rail 3A, the multiple mounting members 7A, 7B, 7C, 7D, 7E, and 7F, and the mounting base 8, and the vertical rail assembly is attached to the frame surface (the room-side facing surface 61).

[0025] As shown in Figure 10, the sensor mounting base 8 has an L-shaped cross section from the facing surface portion 80 and the facing surface portion 81, and in this embodiment, the upper photoelectric sensor S1 is attached to the facing surface portion 80, and the lower photoelectric sensor S2 is attached to the facing surface portion 81.

[0026] The upper end portion of the facing surface 80 of the sensor mount 8 is a wide portion provided with an extension 800, and the light emitter or light receiver of the photoelectric sensor S1 (collectively referred to as the "sensor element") is attached to the extension 800. A hole 801 for attaching the sensor element is formed in the extension 800, and the attachment position of the sensor element is determined by the hole 801.

[0027] A wide portion with an extension 810 is formed at the lower end portion of the visible surface 81 of the sensor mount 8, and the light emitter or light receiver of the photoelectric sensor S2, i.e., the sensor element, is attached to the extension 810. A hole 811 for attaching the sensor element is formed in the extension 810, and the attachment position of the sensor element is determined by the hole 811.

[0028] Two notches 82 are formed in the front surface 80 of the sensor mount 8, spaced apart in the height direction. Two holes 83 are formed in the front surface 81, through which screws 73 for attaching the sensor mount 8 to the mounting member 7, vertical rail 3A, and mounting members 7E and 7F are inserted. The height position of the notches 82 matches the height position of the screws 72 for fixing the mounting members 7E and 7F to the indoor-side front surface 61 of the body 6, so that the screws 72 can be inserted horizontally through the notches 82 in the vertical rail assembly. In the illustrated embodiment, the height positions of the notches 82 and the holes 83 match (because the height positions of the screws 72 and 73 for attaching the mounting member 7 are the same), but this is not limited to this.

[0029] Photoelectric sensors S1 and S2 are equipped with a mounting piece 9 for mounting the sensor main body S' to the sensor mounting base 8. As shown in Fig. 4, in the upper photoelectric sensor S1, the mounting piece 9 has an L-shaped cross section consisting of a front piece 90 and a front piece 91, and the sensor main body S' is fixed to the tip of the front piece 90, and the front piece 91 is connected to the front surface portion 80 (extension portion 800) of the sensor mounting base 8. The front piece 90 of the mounting piece 9 extends opposite the front surface portion 81 of the sensor mounting base 8, and the sensor main body S' is brought out into the room beyond the front surface portion 81 and the vertical rail 3A.

[0030] 5, in the lower photoelectric sensor S2, the mounting piece 9 has an L-shaped cross section made up of a front piece 90 and a front piece 91, and the sensor main body S' is fixed to the side of the front piece 91, and the front piece 90 is connected to the front surface portion 81 (extension portion 810) of the sensor mounting base 8. The front piece 91 of the mounting piece 9 extends facing away from the vertical rail 3A toward the indoor side, and the sensor main body S' is brought out into the indoor side beyond the front surface portion 81 and the vertical rail 3A.

[0031] When installing the overhead door of this embodiment, the vertical rail 3A, curved rail 3B, and horizontal rail 3C that make up the guide rail 3 are assembled on site, but in the factory, a vertical rail assembly is formed from the vertical rail 3A, multiple mounting members 7A, 7B, 7C, 7D, 7E, and 7F, and the mounting base 8, and the vertical rail 3A is transported to the site as a vertical rail assembly.

[0032] By fixing the vertical rail assembly to a predetermined position on the indoor-side visible surface 61 of the skeleton 6 with screws 72, the position of the sensor mounting base 8, i.e., the mounting positions of the photoelectric sensors S1 and S2, are determined at the same time. Compared to the conventional photoelectric sensor mounting process (positioning work, mounting work on the skeleton surface), the photoelectric sensor mounting structure according to this embodiment does not require the process of checking the optical axis position when mounting the photoelectric sensor, simplifying the mounting process and contributing to improved workability.

[0033] A notch 82 is formed in the visible surface 80 of the sensor mounting base 8 corresponding to the position where the screw 72 is to be attached (Figures 3 and 6), and the visible edges 70 of the mounting members 7E and 7F are exposed in the notch 82, so that the screws 72 can be inserted through the notch 82 to fix the visible edges 70 of the mounting members 7E and 7F to the indoor visible surface 61.

[0034] In the indoor space of the opening that is opened and closed by the overhead door, the distance (side room dimension D) between the side wall 62 of the indoor space and the opening (visible surface 60 of the body 6) may be limited. In the mounting structure for the photoelectric sensor according to this embodiment, the photoelectric sensor S can be installed closer to the vertical guide rail 3A than in the conventional mounting structure, and the photoelectric sensor S can be contained within a width that is approximately the same as the width dimension of the mounting member 7, making it possible to install the photoelectric sensor S even in a site where the side room dimension D is small (it may be difficult to install a photoelectric sensor in the conventional mounting structure for the photoelectric sensor). [Explanation of symbols]

[0035] 1 panel 2 guide rollers 3 Guide rails 3A Vertical Rail 6 skeleton 61 Indoor facing surface 7, 7A to 7F Mounting parts 70 Mitsukebe 71 Prospect 8 Sensor mounting base 80 Misemen part 81 Prospective surface part 9 Mounting piece S, S1, S2 photoelectric sensors

Claims

1. In an overhead door, a door body is made up of multiple panels connected in the height direction, and guide rollers provided at both ends of each panel in the width direction are guided by left and right guide rails to move up and down to open and close the opening. the overhead door includes a photoelectric sensor that generates a light beam that traverses near a lower portion of the opening; The guide rail includes left and right vertical rails provided on both sides of the opening in the width direction, and each vertical rail is supported in a cantilevered manner from the frame by an attachment member provided on the frame, A sensor mounting base is attached to the lower portion of the vertical rail, The photoelectric sensor is attached to the sensor mount. Sensor mounting structure for overhead doors.

2. The sensor mounting base is fixed to the side surface of the lower portion of the vertical rail together with the mounting member.

2. The sensor mounting structure for an overhead door according to claim 1.

3. the mounting member has a visible edge fixed to the body and a visible edge fixed to a side surface of the vertical rail, the sensor mount includes a visible surface portion fixed to the visible side of the mounting member, and a visible surface portion extending opposite and spaced from the visible side, The photoelectric sensor is attached to the visible surface portion or the visible surface portion of the sensor mounting base.

3. The sensor mounting structure for an overhead door according to claim 2.

4. The mounting member is made up of a plurality of mounting members spaced apart in the height direction, the vertical rail is supported by the plurality of mounting members; the sensor mounting base is an elongated member extending in a height direction, and a plurality of photoelectric sensors are mounted to the sensor mounting base at intervals in the height direction; the sensor mount is fixed to the side surface of the lower portion of the vertical rail together with the first and second mounting members, which are two mounting members located below the sensor mount.

4. The sensor mounting structure for an overhead door according to claim 2 or 3.

5. A vertical rail assembly is formed from a vertical rail, a plurality of mounting members fixed at intervals in the height direction of the vertical rail, and a sensor mounting base fixed together with the mounting members located below at a lower portion of the vertical rail, The vertical rail assembly is transported to the site and attached to the surface of the building frame. a sensor is attached to the sensor mounting base of the vertical rail assembly attached to a body surface; How to install sensors on overhead doors.

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