Automatic doors

Abstract

To meet the demand for improvements in cost, strength, safety mechanism, and appearance in response to the growing need for an automatic door for touchless opening / closing.SOLUTION: A surface portion 9 of a vertical frame is integrally molded and has a "U" shape overall. In a middle portion 9a, a fitting recess 9b, into which the fixed end of a FIX door is fitted in the thickness direction, and a contact flat area, with which the edge of a sliding door in the thickness direction on the sliding door pull side is in contact, are shaped in parallel. The surface portion 9 can be constructed only from a strip-shaped aluminum extrusion, and its strength can be secured. A square tubular section 13 created by enlarging the depth can be used as a space to accommodate an element 21 of an auxiliary sensor, allowing for the installation of double auxiliary sensors, instead of previously one installed only on the mullion frame, or for the double-sided door bag. By installing a large-depth blank frame corresponding to the large-depth vertical frame 7, an activation sensor can be hidden inside the blank frame.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an automatic door that opens when a sensor detects a person passing by and a drive mechanism including an engine operates. [Background technology]

[0002] Automatic doors have traditionally been installed in stores, factories, etc. However, due to the impact of the COVID-19 pandemic, people are becoming more cautious about touching objects, and there is an increasing demand for automatic doors, which can be opened and closed without touching the door. Therefore, in order to meet these needs and differentiate products from those of competitors, it is necessary to further improve strength, safety mechanisms, and appearance while also taking cost into consideration. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-8707 Summary of the Invention [Problem to be solved by the invention]

[0004] In contrast, in the past, frames were not made specifically for automatic doors, but rather general-purpose frames were modified for use with automatic doors, which resulted in a decrease in strength. As for the safety mechanism, as described in Patent Document 1, a photoelectric sensor or the like that detects people in the entranceway is attached to the mullion to prevent people passing through the automatic door from getting caught in the door. However, when the sliding door opens, the door tail is pulled in toward the fixed door, so if you are standing close to the fixed door, you may be hit by the sliding door as it is pulled in or be caught between the door and the vertical frame, and the safety mechanism described above cannot ensure safety in such a situation. Furthermore, because the activation sensor was external, the automatic door had a crude, mechanical appearance.

[0005] The present invention has been made to solve the above problems, and its object is to provide a new and useful automatic door that can solve one or more of the above problems simultaneously. Another object of the present invention is to provide an automatic door that has a distinctive shape in the surface of the vertical frame. [Means for solving the problem]

[0006] In order to achieve the above object, the invention of claim 1 provides an automatic door comprising a fixed door, a sliding door arranged alongside the fixed door in the thickness direction thereof and movable in the opening and closing direction, and a vertical frame to which the fixed door is fixed and which forms a door pocket for the sliding door, The surface of the vertical frame is integrally molded and is U-shaped overall, with a fitting recess in the middle of the U-shape into which the end of the fixed side of the FIX door in the thickness direction is fitted, and a contact flat surface against which the end of the retractable side of the sliding door abuts, shaped in parallel. The surface of the vertical frame is made of strip-shaped aluminum extrusion material and is a product made exclusively for automatic doors. The aforementioned The vertical frame has a pair of opposing surface portions, and each surface portion is extended in the width direction of the abutting plane portion, and the end side is further bent in two stages at the end of the "U" shape to form a square tube together with the extended part of the abutting plane portion, Each tube is provided with a light-passing hole, and a light-emitting element and a light-receiving element of the anti-pinch sensor are specially accommodated in each tube, and light emitted from the light-emitting element enters the light-receiving element through the light-passing hole provided in the extension part. This is an automatic door characterized by the following.

[0009] Claim 2 The invention is 1 In the automatic door described above, a safety guard is rotatably supported on the end of the extension of the flat abutting part of the surface of the vertical frame, and when the safety guard is closed, it forms a double-sided door pocket together with the fixed door.

[0010] Claim 3 The invention is 2 The automatic door described above is characterized in that an anti-pinch sensor is disposed between the safety guard and the fixed door.

[0011] Claim 4 The invention is Any of 1 to 3 In the automatic doors described in a pair The upper frame is connected to the vertical frame to form a frame structure. Below the frame, a wire rope is hung between the pair of vertical frames via a hanging beam. The wire rope consists of a housing and a cover made of strip-shaped aluminum extrusion material, with the length of the strip used as the horizontal direction. The housing is U-shaped overall, and a start-up sensor is directly attached to the inner surface of the lower horizontal frame. This is an automatic door characterized by the following. [Effects of the Invention]

[0012] The automatic door of the present invention, while ensuring strength through the distinctive shape of the surface of the vertical frame, can also be equipped with a double safety mechanism that can respond to actual situations, and can have an excellent design with the activation sensor hidden from the outside. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a front view of an automatic door according to an embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view of the surface portion of the vertical frame and the cover of FIG. 1. [Figure 3] FIG. 2 is a diagram showing the structure of the vertical frame side of the automatic door in FIG. 1. [Figure 4] FIG. 2 is a cross-sectional view of the upper frame of FIG. [Figure 5] FIG. 2 is a cross-sectional view of the suspension bundle of FIG. [Figure 6] FIG. 2 is a cross-sectional view of the eyeless housing of FIG. 1. [Figure 7] 8 is a diagram showing the state in which the surface of the vertical frame of FIG. 2 is connected to the housing without a transom of FIG. 6 and the cover without a transom of FIG. 8. [Figure 8] 8A and 8B are a front view and a cross-sectional view of the interlock cover of FIG. 7. [Figure 9] FIG. 2 is a cross-sectional view of the mullion of FIG. 1. [Figure 10] 3 is a cross-sectional view of a plurality of surfaces, including the surface of the vertical frame of FIG. 2, in an unexpected manner. [Figure 11] 7 is a cross-sectional view of a plurality of housings, including the unattached housing of FIG. 6, in a different way. DETAILED DESCRIPTION OF THE INVENTION

[0014] An automatic door 1 according to an embodiment of the present invention will be described with reference to the drawings. The automatic door 1 is installed at the entrance or exit of a building or at a partition inside the building, and is installed in a rectangular opening formed between a wall or pillar, as shown in Figures 1 and 3. The automatic door 1 is composed of a vertically long, rectangular, flat fixed door 3 and a sliding door 5, both of which have translucent glass plates as their main body. A three-sided frame is directly attached to both the left and right sides and the top of the opening, and the left and right sides of the frame of the three-sided frame are made up of vertical frames 7, 7. The surface part 9 of this vertical frame 7 and the cover 15 are made up of strip-shaped aluminum extrusion material, and the length direction of the strip is used as the up-down direction, i.e., the vertical direction. Therefore, the cross-sectional shapes of the surface portion 9 and the cover 15 in the width direction are the same everywhere.

[0015] As shown in detail in Figure 2, in the widthwise cross section of the surface portion 9, one end and the middle of the strip are bent almost vertically toward the back surface, and the space between the bent portions forms the front portion 9a. Near one end of this front portion 9a, a recessed fitting 9b is formed, recessed toward the back surface. The front portion 9a has a side portion 9c extending from a bent portion at one end in the width direction toward the tip side.

[0016] The bent portion near the middle is further bent almost vertically in a direction that folds back toward the one end, and the section up to the bent portion forms side portion 9d. This side portion 9d is approximately the same size as side portion 9c, and the plate surfaces face each other. The bottom of fitting recess 9b is located slightly toward the front from the rear ends of side portions 9c and 9d. The side surface 9d extends parallel to the front surface 9a beyond the bent portion, but at its tip end, it bends toward the front surface 9a at a position spaced apart from the fitting recess 9b in the width direction, and the section up to the bent portion forms the back surface 9e. The back surface 9e and the front surface 9a face each other. However, the width of the back surface 9e is greater than the width of the front surface 9a.

[0017] From the rear surface portion 9e toward the tip end, the tapered portion 9 is bent in three steps in a substantially vertical staircase pattern, and is gradually bent toward one end in the width direction as it approaches the front surface portion 9a. This stepped portion is mainly made up of side surface 9f. Side surface 9f faces side surfaces 9c and 9d. Both sides of side surface 9f in the width direction are stepped portions 9g and 9h. Step portion 9h on the 9e side forms one side of the L-shaped surface, and the other side forms side surface 9i, which faces side surfaces 9c and 9d.

[0018] From the front portion 9a toward the other end in the width direction, the section is connected in the order of side portion 9d, back portion 9e, side portion 9i, step portion 9h, side portion 9f, and step portion 9g. Screw holes 9j, 9j extend vertically on the back surface of the front portion 9a, and one of the screw holes 9j is interposed as a connecting portion between step portion 9g and the front portion 9a. Therefore, a rectangular cylindrical portion 13 having a substantially rectangular cross section is formed as a whole, the inside of which is used as a storage space. The surface portion 9 of the vertical frame 7 is a special part for the automatic door 1, and is molded into the required shape as a single piece, so even though it and the cover 15 are made of lightweight aluminum material, sufficient strength is ensured.

[0019] The area between the rectangular tube portion 13 and the side portion 9c is concave when viewed from the rear, but the rear side of the fitting recess 9b in the middle is raised to form a bump. This concave portion is closed by a cover 15 in the form of a vertically elongated rectangular plate that is placed on the rear side. Insertion edges 15a, 15a are provided on both widthwise sides of the cover 15. Meanwhile, a hook piece rises from the middle of the step portion 9h on the rectangular tube portion 13 side toward the rear, and together with the side portion 9i, an insertion recess 17 having an L-shaped cross section is formed. The insertion recesses 17 are also provided in line symmetry on the inner surface of the side surface portion 9c. When the cover 15 is placed, the insertion edges 15a, 15a are inserted into the insertion recesses 17, 17, respectively, and fit into the predetermined positions. Therefore, the recessed portions are closed.

[0020] An upper frame 11 is framed at the upper ends of the pair of vertical frames 7, 7 to form a three-sided frame body, and as shown in Figure 4, this upper frame 11 is constructed in the same way as the vertical frame 7, with the vertical direction of the vertical frame 7 being the horizontal direction of the upper frame 11. The vertical frame 7 and the upper frame 11 are perpendicular to each other, and one end of each width direction is located on the same side of the opening where the automatic door 1 is installed in the direction of passage.

[0021] The cover 15 side of the vertical frame 7 is placed on the wall surface W (see FIG. 3) and is fixed by bolts (not shown) driven into the recessed bottom surface of the fitting recess 9b. The upper frame 11 is also similarly fastened with bolts. In addition, the vertical frame 7 and the upper frame 11 are interconnected by drilling holes on the vertical frame 7 side and fastening them with screws using screw holes on the upper frame 11 side.

[0022] The surface portion 9 of the vertical frame 7 is formed with a characteristic structure of the present invention. The surface portion 9 has a width dimension, i.e., a margin, that is sufficiently longer than the conventional width dimension, and this extended margin is used to provide the square tube portion 13 on the surface portion 9 as described above. The square tube portion 13 is equipped with a second auxiliary sensor for preventing pinching. A light-passing hole 19 is formed in the front portion 9a on the square tube portion 13 side, and a photoelectric switch element 21 is attached and housed on the inner surface of the square tube portion 13 so as to face the light-passing hole 19 as a second auxiliary sensor. The surface portions 9, 9 of the vertical frames 7, 7 face each other with a gap in the left-right direction, with the element 21 housed on one side being the light-emitting element, and the element 21 housed on the other side being the light-receiving element. As shown in Figure 1, the optical axis is oriented approximately horizontally between the vertical frames 7, 7, and light emitted from the light-emitting element passes through the light-passing holes 19, 19, establishing an optical path B where light enters the light-receiving element. The lead wires of the element 21 are passed through the rectangular tube portion 13.

[0023] The door is also provided with a safety guard 23. The main body of the safety guard 23 is a vertically long, rectangular, flat plate similar to the fixed door 3, and as shown in Figure 3, a glass plate 23b is fitted into an aluminum outer frame 23a, which is fixed and integrated into the door, as shown in Figure 1. In Figure 1, the safety guard 23 and the fixed door 3 overlap, and the safety guard 23 side is visible. A shaft 25 is connected in an upright position to the other widthwise end of the front portion 9a of the vertical frame 7, i.e., the end of the square tube portion 13, and one of the outer frames 23a in the left and right directions is rotatably supported on this shaft 25. Therefore, the safety guard 23 can be rotated and opened to the position shown by the dotted line in Figure 3. A pair of safety guards 23, 23 are provided in the left and right directions corresponding to the fixed doors 3, 3, and they open like a double door.

[0024] An end portion in the thickness direction on one side of the left and right direction of the fixed door 3 is fitted into the fitting recess 9b and fixed via a sealing material or the like. When the safety guard 23 is closed and set, it is parallel to the fixed door 3. In this state, it fits within the recesses of the opposing vertical frames 7, 7, and the surface on the front side in the opening direction is almost flush with the side surface 9d of the vertical frame 7 and does not protrude forward. A lock piece 27 is attached to the rear surface of the outer frame 23a of the safety guard 23 in the opening direction. When this lock piece 27 is pressed down, it protrudes from the underside of the safety guard 23 and is locked as described below, maintaining the set state. Furthermore, the element 21 of the second auxiliary sensor is located between the fixed door 3 and the safety guard 23, which results in the sensor being protected.

[0025] Between the fitting recess 9b and the square tube portion 13 of the front portion 9a is a flat abutment portion 29 against which the edge of the sliding door 5 abuts when it is open. The entire surface portion 9 is U-shaped, with the fitting recess 9b and the flat abutment portion 29 located on the middle flat portion of this U-shape. The fitting recess 9b is located on one end side in the width direction, and the flat abutment portion 29 is located in the middle. Note that because the square tube portion 13 does not appear distinct from the rest on the surface side, the flat abutment portion 29 may also straddle the square tube portion 13 side.

[0026] In the single-sided door pocket specification, when the sliding door 5 slides open, the tail end of the door is pulled toward the fixed door 3, so if you are standing close to the fixed door 3, there is a risk that the sliding door 5 will hit you before it hits the flat contact surface 29, or that you will be pinched between the sliding door 5 and the vertical frame 7. However, in this automatic door 1, when the safety guard 23 is closed, it forms a double-sided door pocket 31 together with the fixed door 3, into which the sliding door 5 is retracted, thereby ensuring safety. In addition, the safety guard 23 is integrated into the vertical frame 7, which gives it a good appearance.

[0027] As shown in Figure 1, below the upper frame 11, a stringer 37 is hung between the vertical frames 7, 7 via a hanging beam 33. Screw holes 39a are also provided on the inner surface of the housing 39 of the stringer 37, extending horizontally, and the stringer 37 is interconnected by drilling holes on the vertical frame 7 side and fastening with screws using the screw holes 39a on the housing 39 side. 5, a pair of fitting grooves 33a, 33a are formed in the hanging bundle 33 in the left-right direction with their openings facing outward, and holes are drilled at the bottom of the grooves. These holes are used to connect the upper frame 11 and the housing 39 together by tapping via connecting metal fittings that are overlapped and straddle the respective hole sides.

[0028] The thickness direction ends of rectangular flat transom panels 35 are fitted into the fitting recesses 9b, 9b of the vertical frame 7 and the upper frame 11 and into the fitting grooves 33a of the hanging beams 33, and are supported and fixed while placed on the top surface of the transom 37. The transom panels 35 are made of translucent glass plates, and a pair are placed on both the left and right sides of the hanging beams 33.

[0029] The housing 39 and cover 45 of the interceptor 37 are made of strip-shaped aluminum extrusion material, and the length direction of the strip is used as the horizontal direction, i.e., the lateral direction. The cross section of the housing 39 in the width direction is formed by connecting an upper horizontal frame 39b, a vertical frame 39c, and a lower horizontal frame 39d, each of which has a width slightly smaller than that of the surface 9 of the vertical frame 7, forming an overall U-shaped cross section, but the width of the lower horizontal frame 39d is about one-third that of the upper horizontal frame 39b. In addition, the upper horizontal frame 39b is lowered by one step on the vertical frame 39c side, creating a step that is used to connect to the hanging bundle 33. The free edge of the upper horizontal frame 39b is bent to form an L-shaped hook portion 39e in cross section, and the free edge of the lower horizontal frame 39d is also bent to form a vertically standing arrowhead portion 39f.

[0030] Between the upper horizontal frame 39b and the lower horizontal frame 39d, a base plate 39g projects parallel to the vertical frame 39c toward the front side. On this base plate 39g, an engine, a driving pulley, a driven pulley, a belt, etc., which constitute a driving mechanism 41, and further a controller are mounted.

[0031] An activation sensor 43 is attached directly to the inner surface of the lower horizontal frame 39d. This activation sensor 43 detects a pedestrian and opens the sliding door 5, and is configured as a light / radio wave reflection type that detects by reflecting infrared rays and microwaves. An opening 44 is provided in the lower horizontal frame 39d, and the detection surface is exposed through this opening 44. The side of the housing 39 where the drive mechanism 41 is mounted is hidden by a cover 45. As shown in Figure 8, the cover 45 also has an upper horizontal frame 45a, a vertical frame 45b, and a lower horizontal frame 45c connected together, and although the cover 45 is flat overall, it has a U-shape, with the upper horizontal frame 45a being approximately half the width of the lower horizontal frame 45c. The free edge of the upper horizontal frame 45a is folded back vertically in two stages to form an L-shaped hook 45d, and the free edge of the lower horizontal frame 45c rises vertically to form an I-shaped hook 45e.

[0032] A hinge 47 is disposed across the upper surface of the upper horizontal frame 45a of the cover 45 and the upper horizontal frame 39b of the housing 39, with the thickness portions of the upper horizontal frame 45a and the upper horizontal frame 39b of the cover 45 butting against each other at their free ends in the width direction. One side of the hinge 47 is fixed to the upper horizontal frame 45a and the other to the upper horizontal frame 39b, and the cover 45 can be opened and closed by rotating relative to the housing 39. Furthermore, an L-shaped stopper 49 is provided on the edge of the surface 9 of the vertical frame 7 facing the cover 45. Normally, when the cover 45 is lowered by its own weight, the inner surface of the vertical frame 45b of the cover 45 hits one side of this stopper 49, and the hook 45d on the cover 45 overlaps the hook 39e on the housing 39 from the front side, preventing further rotation. As shown in FIG. 7, the vertical frames 45b and 39c are maintained with their plate surfaces facing each other. The cover 45 can be opened and closed by manually rotating it relative to the housing 39. A hole is drilled in the stopper 49, and another hole is drilled on the cover 45 at the position that faces the hole when it hits the stopper. The cover 45 can be locked by tapping the hole.

[0033] An activation sensor 43 is also directly attached to the inner surface of the lower horizontal frame 45c of the cover 45. An opening 44 is also provided in the lower horizontal frame 45c, and the detection surface is exposed through the opening 44. In order to detect both sides of the opening, one activation sensor 43 is arranged on the housing 39 side and the other activation sensor 43 is arranged on the cover 45 side, and by closing the cover 45, both are hidden from the outside.

[0034] Previously, sensors were installed externally, giving the impression that a sensor was installed, but by hiding them in this way, the automatic door 1 has a clean, aesthetically pleasing appearance. Furthermore, when installed externally, especially on the side facing the outside of the building, rain and other elements can easily seep in, leading to false detections. By hiding them in this way, false detections are less likely to occur. This is made possible by extending the length of the interceptor 37 to the same extent as the surface 9 of the vertical frame 7, making it possible to place the activation sensors 43, 43 on the housing 39 and cover 45 sides, respectively.

[0035] The lower horizontal frame 45c of the cover 45 and the lower horizontal frame 39d of the housing 39 are positioned at approximately the same height in the horizontal direction, but there is a gap between them. A pair of mullions 51, 51 are fixed at a distance below the crossbeam 37. As shown in Figure 9, the crossbeam 51 has a similar shape to the hanging beam 33, and is connected to the crossbeam 37 in the same way. The other end of the FIX door 3 in the thickness direction on the left-right side is fitted into one fitting groove 51a of the upright 51 and fixed via a sealant or the like. The remaining fitting groove 51a is closed by a cover plate 53. The fixed doors 3, 3 are respectively fitted with uprights 51, 51, and the uprights 51, 51 face each other in the left-right direction, with their respective cover plates 53, 53 facing each other.

[0036] The fitting groove 51a on the cover plate 53 side is equipped with a first auxiliary sensor to prevent pinching. The element 21 housed on one side is the light-emitting element, and the element 21 housed on the other side is the light-receiving element. As shown in Figure 1, the optical axis is oriented so as to be approximately horizontal between the uprights 51, 51, and an optical path A is established in which light emitted from the light-emitting element passes through the light-passing holes 19, 19 formed in the cover plates 53, 53 and enters the light-receiving element. The lead wires of the element 21 are passed through the uprights 51.

[0037] As described above, this automatic door 1 is provided with two auxiliary sensors to ensure the safety of pedestrians. A baseboard 55 is hung between the vertical frame 7 and the mullion 51 in the gap below the fixed door 3, closing the gap between the fixed door 3 and the floor. Similar to the housing 39 of the mullion 37, the baseboard 55 is interconnected with the vertical frame 7 side by drilling holes and fastening with screws using the screw holes 9j, and is interconnected with the mullion 51 side by tapping via connecting metal fittings that are overlapped across the hole sides of the baseboard 55 and the mullion 51.

[0038] As shown in Figure 1, the sliding door 5 is an integrally formed rectangular frame body framed by a pair of vertical frames 5a, 5a, an upper frame 5b, and a lower frame 5c, with a translucent glass plate 5d fitted into the frame body. As shown in Figure 3, the sliding door 5 is arranged alongside the fixed door 3 in the thickness direction, with their panel surfaces facing each other. The sliding door 5 slides between a position where it overlaps with the fixed door 3 within the double-sided door pocket 31 to open the doorway, and a position where it exits the double-sided door pocket 31 to close the doorway. The trajectory of this sliding movement is parallel to the panel surface of the fixed door 3.

[0039] An opening / closing mechanism is attached to the upper end of the sliding door 5. Hangers are provided on the sliding door, and these hangers enter the interior through the gap below the transom 37. Door rollers are journaled at the upper end of the hangers, and these door rollers roll on rails formed on the base plate 39g, allowing them to travel along guided paths. In addition, hangers are connected to the upper and lower sides of the belt of the drive mechanism 41. Therefore, when the engine is driven, the drive pulley rotates, causing the belt to travel in a circular motion, opening and closing the sliding door 5.

[0040] The engine is controlled by a controller, which is also connected to the lead wires of the start sensor, first auxiliary sensor, and second auxiliary sensor, and the controller performs opening and closing control based on the detection results from these sensors.

[0041] In the above, the vertical frame 7 is shown to have the maximum depth within the practical range, but narrower depths are also available, and when classified by depth, they are classified as (A) (= surface portion 9 of the vertical frame 7), (B), and (C), as shown in Figure 10. (B) also has a rectangular tube portion, and it is possible to install a second auxiliary sensor, but (C) does not allow the installation of a second auxiliary sensor. However, the surface of each is made of extruded aluminum, ensuring strength. It is recommended to use the appropriate material depending on the installation situation.

[0042] Furthermore, the interlock 37 can be smaller in size than the vertical frame 7. When classified by size, they are (A), (B), and (C) (= the housing 39 of the interlock 37 described above) as shown in Figure 11. In (A) and (B), the activation sensor 43 is external. However, both housings are one-piece molded products made of extruded aluminum, ensuring strength. It is recommended to use them according to the installation situation, etc.

[0043] Although the embodiments of the present invention have been described above, the specific configuration of the present invention is not limited to the above-described embodiments, and the present invention also includes design changes that do not deviate from the gist of the present invention. For example, the configuration of the drive mechanism and the opening / closing mechanism may be different as long as the operation of the sliding door is ensured. [Explanation of symbols]

[0044] 1...Automatic door 3...Fixed door 5...Sliding door 5a...Vertical frame 5b...Top frame 5c...Bottom frame 5d...Glass plate 7...Vertical frame 9...Surface part 9a... Front portion 9b... Fitting recess 9c... Side portion 9d...Side part 9e...Back part 9f...Side part 9g, 9h...Stepped part 9i...Side part 9j...Screw hole 11...Upper frame 13...Square tube part 15...Cover 15a...insertion edge 17...insertion recess 19...light passage hole 21...element 23...safety guard 23a...outer frame 23b...glass plate 25...shaft 27...lock piece 29... Flat contact portion 31... Double-sided door pocket 33... Hanging beam 33a...Inlay groove portion 35...Transom panel 37...Blind 39...Housing 39a...Screw hole 39b...Upper horizontal frame 39c...Vertical frame 39d...Lower horizontal frame 39e...Hook 39f...arrowhead portion 39g...base plate 41...drive mechanism 43...Activation sensor 44...Opening 45...Cover 45a...Upper horizontal frame 45b...Vertical frame 45c...Lower horizontal frame 45d, 45e... Hook 47... Hinge 49... Housing 51... mullion 51a... fitting groove portion 53... cover plate 55...Skirboard A, B…light path W…wall surface

Claims

1. An automatic door system includes a fixed door, a sliding door that is arranged alongside the fixed door in the thickness direction and is movable in the opening and closing direction, and a vertical frame to which the fixed door is fixed and which forms a door pocket for the sliding door. The surface of the vertical frame is integrally molded and is U-shaped overall, with a fitting recess in the middle of the U-shape into which the end of the fixed side of the fixed door is fitted in the thickness direction, and a contact flat surface against which the end of the sliding door retracts is abutted, shaped in parallel. The surface of the vertical frame is made of strip-shaped aluminum extrusion material and is a product made specifically for automatic doors. The vertical frame has a pair of surface portions facing each other, Each surface portion is extended in the width direction of the contact plane portion, and the end side is further bent in two stages at the end of the "U" shape to form a rectangular tube together with the extended part of the contact plane portion, The automatic door is characterized in that each cylinder is provided with a light-passing hole, and furthermore, a light-emitting element and a light-receiving element of a pinch prevention sensor are specially accommodated in each of the cylinders, and light emitted from the light-emitting element enters the light-receiving element by using the light-passing hole provided in the extension part.

2. The automatic door according to claim 1, A safety guard is rotatably supported on the end of the extension of the flat contact surface of the vertical frame, The automatic door is characterized in that the safety guard forms a double-sided door pocket together with the fixed door when closed.

3. The automatic door according to claim 2, This automatic door is characterized in that a pinch prevention sensor is disposed between the safety guard and the fixed door.

4. The automatic door according to any one of claims 1 to 3, Below the upper frame, which is connected to a pair of vertical frames to form a frame structure, a lattice is hung between the pair of vertical frames via a hanging beam, The interlocking device is composed of a housing and a cover, each of which is made of a strip-shaped aluminum extrusion material, and the length direction of the strip is used as the horizontal direction. The automatic door is characterized in that the housing is U-shaped overall and an activation sensor is directly attached to the inner surface of the lower horizontal frame.

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