Swing door device

Abstract

To solve the problems that a wheelchair user needs a considerable force to open a conventional swing door because the wheelchair user pushes it open against the closing force of a door closer, and that the wheelchair always comes into contact with the swing door when leaving a room, causing damage to both.SOLUTION: Adding a door-opening force to a swing door using a torsion coil spring cancels out the closing force of a door closer. When a door handle is in a first position, the spring force of the torsion coil spring does not act on the swing door, but when the door handle is rotated to the second position, the spring force acts as a door-opening force, slowly opening the swing door. A slide roller is allowed to run on the end of the torsion coil spring via a slide rail, and in the second position the slide roll rides up onto the wedge material and abuts against the swing door panel surface. The pair of door handles are provided on the left and right sides of the swing door at a predetermined height so that they can be operated by wheelchair users, and the pair of door handles are linked together by a link or chain so as to operate in conjunction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This invention relates to an improved swing door device, and more particularly to an improved swing door device with a door closer that is easy to use for wheelchair users. [Background technology]

[0002] Door closers are attached to the top of the door, near the hinges. First, a door closer automatically closes an open door (applying closing force to the door). Second, it has a slow-motion function to prevent the door from closing suddenly. Third, it also works to prevent the door from opening accidentally due to wind, etc. The speed can be set individually in about four stages, such as the speed when the door is wide open, the speed when it is about to close, etc. When closing, the door closes quickly and smoothly, but when it is just about to close, the door closes slowly and safely. Door closers store the force exerted when the door is opened in springs, etc., and at the same time, dampers that utilize the viscosity of oil prevent sudden movement. Furthermore, the door closer has a fourth function of holding the door open when it is opened to a certain angle (for example, 90 degrees). Conventional door closers are known from Patent Documents 1 and 2. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-43022 [Patent Document 2] Japanese Patent Application Publication No. 2017-218785 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0004] However, conventional swing doors with door closers have the following drawbacks. When a wheelchair user enters a room through a swing door with a door closer, they push the door open while pushing their wheelchair to enter the room. In this case, the door is constantly biased in the closing direction by the door closer. When entering the room, the wheelchair user needs to use a large amount of force to open the door against the closing force of the door closer, and at the same time, they also push their wheelchair to enter the room. When leaving the room, the user turns the door handle, pulls the door open with great force, opens it fully, and pushes the wheelchair out of the room. At this time, the wheelchair is pushed against the door as it leaves the room. This can result in damage (scratches) to the wheelchair and / or door upon contact with the door. Furthermore, with doors that stop in a fully open position, there is the problem that the door handle is too far away for the wheelchair user to operate after exiting the vehicle in a wheelchair.

[0005] Therefore, the inventor has conducted extensive research to solve these problems and has proposed the following invention. In other words, the object of this invention is to provide an easy-to-use swing door device that provides assistance to wheelchair users when opening and closing doors, thereby eliminating the inconvenience and difficulty they experience. [Means for solving the problem]

[0006] The invention described in claim 1 is a swing door device equipped with a door closer that applies a closing force to a swing door, and is equipped with: a door handle that is supported by the swing door and moves between a first position and a second position; a torsion coil spring whose one end is engaged with the frame of the swing door and whose other end extends along the panel surface of the swing door, thereby applying an opening force to the swing door that counteracts the closing force of the door closer; and a slide roll that is supported so as to be able to move freely along the extension direction of the other end of the torsion coil spring; when the door handle is in the first position, the slide roll is separated from the panel surface of the swing door and does not generate the opening force; and when the door handle is in the second position, the slide roll abuts against the panel surface of the swing door, and the elastic force of the torsion coil spring acts on the swing door to apply an opening force to the swing door, thereby opening the door against the closing force of the door closer.

[0007] The swing door device comprises a swing door body (a flat, box-shaped swing door) rotatably supported (attached so as to be able to open and close freely) on a door frame (door jamb) via a door hinge, a door handle pivoted on the swing door body, a door closer arranged to straddle the door frame and the swing door body and apply a force to the swing door body in the closing direction, a torsion coil spring that generates a door-opening force that acts in the opposite direction to the closing force of the door closer, a slide roll arranged to slide freely in its extension direction on the other end terminal of the torsion coil spring, and a link mechanism or chain mechanism that moves the slide roll away from the plate surface of the front or back plate of the swing door body when the door handle is in a first position, and moves the slide roll in the extension direction of the spring terminal to abut the slide roll against the plate surface of the swing door body when the door handle is rotated to a second position. Therefore, when the door handle is in the first position, the slide roll is separated from the plate surface of the swing door body, and the elastic force of the torsion coil spring is not transmitted to the swing door body. When the door handle is in the second position, rotated a predetermined angle from the first position (when the handle is rotated), the slide roll abuts against the plate surface of the swing door body. As a result, the elastic force of the torsion coil spring acts via the slide roll in the direction of opening the swing door body. Torsion coil springs are springs that are used to receive torsional torque around the coil axis. Depending on the direction of rotation used, stainless steel wire is wound clockwise or counterclockwise to form a coil.

[0008] The door handle is supported on a shaft (the rotation axis is perpendicular to the door panel surface) at a predetermined height on the rectangular swing door body (front panel and back panel), and is capable of rotating (in a plane parallel to the door panel surface) between a first position and a second position spaced a predetermined angle apart. This height position of the swing door is a position that can be easily operated by a wheelchair user, and is, for example, a position lower than half the door height. The door handle is connected to the slide roller via, for example, a link mechanism (including multiple links). The slide roller is supported by, for example, a slide rail so that it can move freely along its extending direction. The slide rail extends along the plate surface in the width direction of the swing door and is fixed to the terminal extension of the other end of the torsion coil spring.

[0009] The torsion coil spring is used so that a load is applied in the winding direction, for example. The main body (coiled portion) of the torsion coil spring is attached to the door frame so that the central axis of the coil is parallel to (i.e. vertical to) the hinge of the door frame. In other words, when an external force is applied in the direction of winding the coil through the terminal of the torsion coil spring, a load is applied to the coil in the direction of winding, and a repulsive force is generated by the torsion coil spring. When no external force is applied to the other end, no repulsive force (elastic force) is generated, and the end is left as a free end. As mentioned above, the other end of the torsion coil spring extends in the width direction of the door. The slide rail fixed to the extension of this end is made of a long, narrow plate (strip plate) of a specified width. The slide rail extends linearly in the width direction of the door, parallel to the front and back panels of the swing door. The slide rail is positioned vertically (perpendicularly) like the door body.

[0010] The slide rail, together with the terminal portion, is housed in the internal space of the door body (consisting of a front panel and a back panel) of the swing door, and a slide roll is provided across the slide rail, movably along the rail. The slide roll moves along the slide rail, facing the back surface of the front panel of the swing door. The slide roll is operated by the door handle, for example, via a link mechanism. A rotatable roller is provided at the protruding end of the slide roll. For example, a wedge is fixed at a specific position on the plate surface of the swing door that faces the protruding end of the slide roll. The wedge has an inclined surface that extends in the door width direction, and the inclined surface gradually rises as it moves away from the hinge side end, but the slide roll (roller outer surface) abuts at a predetermined height position on the inclined surface (it can be the highest position or a position nearby). When the slide roll abuts against the inclined surface of the wedge, the coil part of the torsion coil spring is pressed in the winding direction via the terminal extension part (long arm part) of the torsion coil spring, and the elastic repulsive force of the coil part acts in the direction of opening the swing door (door-opening force is generated).

[0011] The invention described in claim 2 is a swing door device described in claim 1, in which the door handles are arranged in pairs at a predetermined height position on the swing door and are linked (move simultaneously) so that they can be operated by wheelchair users, and the pair of door handles are arranged at both ends of the swing door in the width direction. A door handle is a component bent like a key, and is composed of a shaft that is installed perpendicular to the door body and a lever that is bent at a 90-degree angle at the tip of the shaft. A pair of door handles are installed on the left and right sides of the swing door at a predetermined height, for example, lower than half the height of the swing door, and both are pivotally supported by the swing door. This pair of door handles is located at both ends (left and right) of the swing door in the width direction, and these door handles are connected to each other by, for example, a link, so that they rotate synchronously (interlocked). The fact that these pair of left and right door handles are positioned at a low position (low enough for wheelchair users to operate) improves operability and convenience for wheelchair users and also ensures ease of operation when entering and exiting the room.

[0012] The invention described in claim 3 is the swing door device described in claim 1 or claim 2, wherein the movably provided slide roll is connected to the door handle by a link mechanism or a chain mechanism. When the door handle is operated, the slide roll moves via a link mechanism or chain mechanism. For example, the slide roller is provided on a slide rail so as to be movable along the direction in which it extends. The slide rail extends along the plate surface in the width direction of the swing door. The end of the torsion coil spring extends in the width direction of the swing door, and the slide rail is fixed to the extension of this end. The slide rail, together with the terminal portion, is housed in the internal space of the swing door body (consisting of a front panel and a back panel). For example, a slide roller is provided across the slide rail so that it can move freely along the rail. The slide roller is connected to the door handle via a link mechanism, so that turning the door handle moves the slide roller along the door width direction via the link.

[0013] The invention described in claim 4 is a swing door device described in claim 1, in which a slide rail extending along the extension direction of the torsion coil spring is fixed to the other end of the torsion coil spring, the slide roll is movably arranged along this slide rail, and an inclined surface is arranged on the panel surface of the swing door facing the slide rail, which slopes upward in the direction in which the slide roll moves, and the slide roll abuts near the highest point of this inclined surface. The torsion coil spring has a coil portion that receives a torsional moment around the central axis, with one end of the coil anchored to the door frame or door hinge and the other end extending in the door width direction as a free end housed within the interior space of the door body. When no external force is applied, the other end of the torsion coil spring is housed linearly within the door body. A slide rail is fixed to this other end. A slide roll is movably supported on the slide rail. For example, this is a roll running structure that straddles a single rail. When the door handle is operated, the slide roll moves via the link, but the roller at the protruding end of the slide roll (the end farthest from the slide rail) is in a non-contact state away from the plate surface of the swing door on the coil spring side of the rail in the first position of the door handle, and in the second position it moves on the rail in a direction away from the coil part and abuts at the highest point of the wedge inclined surface. As a result, an external force acts on the torsion coil spring in a direction that winds (winds in) the coil, and the elastic force that repels this external force urges the swing door in the direction of opening, so that the swing door cancels the closing force of the door closer and gradually opens. [Effects of the Invention]

[0014] According to the inventions of claims 1 to 4, in a swing door with a door closer, the opening force of the torsion coil spring can be applied against the closing force of the door closer, allowing the door to be opened with a small force. This makes it easier for wheelchair users to open and close the door. At this time, it is possible to prevent parts of the wheelchair from coming into contact with and damaging the door panel. In addition, by positioning the door handles at a low position and providing a pair of door handles on the left and right sides in the door width direction, opening and closing the door can be made even easier for wheelchair users. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a front view showing the overall configuration of a swing door device according to one embodiment of the present invention. [Figure 2]1 is a perspective view showing a door closer for a swing door device according to an embodiment of the present invention; [Figure 3] 1 is a front view showing a slide rail of a swing door device according to an embodiment of the present invention. [Figure 4] 1 is a plan view showing the movement of a slide roller of a swing door device according to an embodiment of the present invention. FIG. [Figure 5] 1 is a side view showing a torsion coil spring of a swing door device according to an embodiment of the present invention. [Figure 6] 1 is a side view showing a slide roller of a swing door device according to an embodiment of the present invention. [Figure 7] 1 is an exploded perspective view showing a slide rail of a swing door device according to an embodiment of the present invention. [Figure 8] 1A and 1B are a plan view and a front view showing the closing operation of a swing door device according to an embodiment of the present invention. [Figure 9] 1A and 1B are a plan view and a front view showing the opening operation of a swing door device according to an embodiment of the present invention. [Figure 10] 1A and 1B are a plan view and a front view showing the procedure of an opening operation of a swing door device according to one embodiment of the present invention. [Figure 11] 1 is a plan view showing a first entry action by a wheelchair user using a swing door device according to an embodiment of the present invention. [Figure 12] 10 is a plan view showing a second entry action by a wheelchair user using a swing door device according to one embodiment of the present invention. FIG. [Figure 13] 10 is a plan view showing a third entry action by a wheelchair user using a swing door device according to an embodiment of the present invention. FIG. [Figure 14] 10 is a plan view showing a fourth action of a wheelchair user entering a room using a swing door device according to an embodiment of the present invention. FIG. [Figure 15] FIG. 10 is a plan view showing a fifth action of a wheelchair user entering a room using the opening door device according to one embodiment of the present invention. [Figure 16] 1 is a plan view showing a first action of a wheelchair user exiting a room using a swing door device according to an embodiment of the present invention. [Figure 17] 1 is a plan view showing a second action of a wheelchair user exiting a room using a swing door device according to an embodiment of the present invention. FIG. [Figure 18] 10 is a plan view showing a third action of a wheelchair user exiting a room using a swing door device according to an embodiment of the present invention. FIG. [Figure 19] 10 is a plan view showing a fourth action of a wheelchair user exiting a room using a swing door device according to an embodiment of the present invention. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, an embodiment of a swing door device according to the present invention will be described with reference to the drawings. [Example]

[0017] Figures 1 to 7 are views showing an inward-opening type swing door device according to this embodiment. Figures 8 to 10 are views showing the operation of the swing door device. Also, Figures 11 to 19 are views showing the swing door device according to this embodiment being used by a wheelchair user. As shown in FIGS. 1 and 2, the swing door device 100 includes a swing door 110, a door closer 120, a torsion coil spring 130, a slide roll 140, a door handle mechanism 150, and a link mechanism 160. The swing door 110 is formed as a flat box having a door thickness of, for example, about 40 mm and consisting of a rectangular front panel and a back panel, and the slide roll 140, link mechanism 160, etc. are arranged and housed in the internal space. This swing door 110 is supported at one end of its long side by a door frame (frame of a rectangular opening) 112 via a plurality of hinges 111 so as to be rotatable within a horizontal plane. It is an inward-opening single door.

[0018] As shown in Figure 2, the door closer 120 is fixed to the frame 112 and the door 110 at the corner of the hinge side above the hinge 11 of the swing door 110. The door closer 120 constantly applies an external force (door closing force) in the closing direction to the swing door 110. When the door 110 is opened, the door closing force is generated by a known mechanism such as hydraulics. Note that once the door 110 is opened to an angle of 90 degrees, the door closer 120 has the function of keeping the door 110 in the open position.

[0019] As shown in Figures 3 and 4, the torsion coil spring 130 is composed of a coil-shaped portion 131 formed by winding a single wire (spring material) into a coil shape, and both terminal portions (arms) of the wire. One end 132 of the torsion coil spring 130 is engaged with the frame 112 of the swing door 110, and the other end 133 extends linearly along the plate surface of the swing door 110 (in the door width direction). The coil-shaped portion 131 is disposed vertically below the upper door hinge 111. The central axis of the torsion coil spring 130 and the axis of the hinge 111 are coaxial. When an external force (load) is applied to the horizontally extending end 133 of the torsion coil spring 130 in the coil winding direction, an elastic force (repulsive force) is generated in the coil-shaped portion. This elastic force applies to the swing door 110 a door-opening force that is greater than (opposes) the door-closing force of the door closer 120.

[0020] Furthermore, a slide rail 141 extending along the extension direction of the torsion coil spring 130 is fixed to the other end 133 of the torsion coil spring 130. The other end 133 of the spring is sandwiched and fixed between the slide rail 141 and a back plate 145. The slide rail 141 is a strip extending in the door width direction, and is fixed vertically (perpendicularly) in the internal space 110A of the door main body 110 (see FIGS. 5 and 6). One end of the slide rail 141 is fixed to the front plate 115 of the door body 110 by a U-shaped bracket 146. At the same time, the other end of the rail 141 is positioned vertically by a pair of adjustment bolts 144. In other words, the slide rail 141, which is a strip, is integrated with the back plate 146 to hold the other end 133 of the torsion coil spring 130 in a sandwiched state, and the slide rail 141 itself is fixed to the front plate 115 of the swing door 110 by the bracket 146 in a cantilevered state.

[0021] A slide guide 142 is provided on the slide rail 141 in a rail straddling form so as to be movable along the rail (see FIG. 7). Long grooves 141A are formed on the upper and lower side surfaces of the slide rail 141, and both legs of the slide guide 142 are slidably fitted into and supported by these long grooves 141A. The slide guide 142 is made up of overlapping rectangular front and rear plates 147 and 148, with the front plate 147 fixed with screws to the surface (front face) of the rear plate 148, which is a base that runs along a long groove. A pair of U-shaped protrusions 149 are formed on the surface (front face) of the front plate 147, and a cylindrical slide roll 140 is supported between these horizontal protrusions 149 so as to be rotatable around a vertical axis. That is, a slide roll 140 is disposed on the front surface of this slide guide 142, with a portion of it protruding from a protrusion 149. The slide roll 140 is rotatably supported by having its rotation shaft disposed between a pair of upper and lower protrusions 149 on the slide guide 141. As will be described later, this slide roll 140 is disposed at a predetermined height position of the swing door 110, facing the rear surface of its front panel 115 (see Figure 1 for the height position).

[0022] The slide roll 140 (assembly) has a protruding ear 147A that protrudes slightly upward from the upper end of its front plate 147, and the tip of a push-pull rod 161 is pivotally connected to this ear 147A. This push-pull rod 161 extends horizontally, and its rear end is connected to one end of a short swing arm 162 via a pin connection (see FIG. 1). The swing arm 162 is an L-shaped lever that is attached to the door body 110 (front panel, rear panel) by a pin so that it can rotate freely within a predetermined angle range with its bent portion 163 as a fulcrum to move the rod (horizontal link) 161 horizontally. The other end of the swing arm 162 is connected to the upper end of a vertical link (push-pull rod) 164 that extends vertically at the open end of the door body 110.

[0023] The lower end of this vertical link 164, which is a thin plate material, is connected to a short link 165 arranged at a predetermined height position on the door body 110. The short link 165 is coaxially connected to the right door handle 151, and when the right door handle 151 rotates at an angle of 90 degrees, the vertical link 164 moves up and down via the short link 165. The door handle (lever) 151 is configured to be located in a vertical plane and rotate within the above-mentioned angle range to take either a first position (I) or a second position (II). A left door handle 152 is pivotally supported on the door panel at the same height as the door body 110, and rotates between two positions, a first position (I) and a second position (II), which are also 90 degrees apart. The right handle 151 and left handle 152 are connected by a chain 155, enabling them to be driven simultaneously (the chain is endlessly connected to both handle shafts via sprockets). When the right handle 151 is set to the first position (I), the left handle 152 also moves simultaneously to take the first position (I). In other words, when the right handle 151 or the left handle 152 is set to the first position (I), they simultaneously take the first position (I), and when either one is operated to take the second position (II), the other also simultaneously takes the second position (II). When these handles are in the first position (I), the slide guide 141 (i.e., the slide roll 140) takes the first position (I) via the links 165, 164, lever 162, and link 161. In this hinge-side position, the slide roll 140 is separated from the door front plate 115 (see FIG. 4), and no elastic force is generated by the torsion coil spring 130. In other words, no door-opening force is acting. On the other hand, in the second position (II), the slide roll 140 abuts against the front plate 115 via the wedge member 170, which pushes the arm (end) 133 of the spring, causing an elastic force (repulsion force) to act on the spring 130 due to deformation in the winding direction. In other words, a door-opening force is exerted.

[0024] As shown in FIGS. 4 and 7, a portion of the slide roll 140 protrudes from the protruding bracket 149, allowing the exposed portion of the roll (the rotating body) to abut against the inclined surface 170A of the wedge member 170. That is, the wedge member 170 is fixed to the rear surface (the side surface of the space) of the door body front panel 115 at a predetermined height so that the inclined surface 170A is lower on the door hinge side and higher on the door opening end side. This widthwise position and height position (approximately 100 cm from the floor) are shown in FIG. 1. The intermediate position in the lengthwise direction of the slide rail 141 is the first position (I), and the open-side position of the push-pull rod 161, which moves toward the door opening side with a constant stroke, is the second position (II). This horizontal distance determines the rotation angle of the lever 162 and the travel height of the vertical link 165.

[0025] Below, we will explain the closing operation of a swing door in a swing door device with reference to Figures 8(A) and (B). (A) and (B) show the position of the slide roller when the door is closed. The slide guide causes the slide roller to run on the slide rail and reach a position close to the hinge. In this position, a certain gap is created between the slide roller and the inner surface of the front panel of the swing door.

[0026] In Figures 9(A) and (B), operating the door handle moves the slide roller via the link, causing it to ride up onto the inclined surface of the wedge material. As a result, an external force acts on the torsion coil spring in the winding direction, and the repulsive force (elastic force) acts in the direction of opening the door. As a result, the door body opens up to 90 degrees, as shown in Figures 10(A) and (B). This is because the elastic force (opening force) of the torsion coil spring exceeds the closing force of the door closer. In this case, the door body opens slowly.

[0027] 11, 12, 13, 14, and 15 are plan views showing the movement of a wheelchair user when entering a guest room from the aisle. Before entering the room, the inward-opening doors are closed. Door handles 151 and 152 are horizontal in the first position (I). First, 1) from the aisle side, a wheelchair user turns the door handle 151 in the opening direction (downward) by 90 degrees (see Figure 11). The slide roll 140 comes into contact with the plate surface. The repulsive force of the torsion coil spring 130 acts, and the door body 110 slowly opens around the hinge. The door handles 151, 152 are vertical in the second position (II). Next, 2) the door body 110 is placed in a stationary state where it is opened 90 degrees (FIG. 12). The door handles 151, 152 are in the second position (II) and are vertical and point downward. Furthermore, 3) in this open state, wheelchair users can enter the room by pushing their wheelchairs (Figure 13). Next, after entering the room, the wheelchair user operates the door handle 151 to return it to the horizontal first position (I) (FIG. 14). In conjunction with this, the door handle 152 also returns to the horizontal position. The slide roll 140 returns to the first position (I), and the elastic force of the torsion coil spring 130 no longer acts. Then, the door main body 110 slowly rotates in the closing direction due to the closing force of the door closer 120, and the door closes, as shown in FIG.

[0028] 16 to 19 show the steps a wheelchair user takes to exit a room in their wheelchair. 1) First, as shown in Fig. 16, the wheelchair user turns the door handle 151 from the horizontal position (I) to the downward position (II) while sitting in the wheelchair inside the passenger compartment. The door body 110 opens slowly due to the repulsive force of the torsion coil spring 130. It stops at 90 degrees. Next, 2) the wheelchair user pushes the wheelchair out of the room (Fig. 17). At this time, the wheelchair user grasps the door handle 152 and returns it to the horizontal position (II). At this time, part of the wheelchair is protruding into the aisle. After operating the handle, the wheelchair can leave the room without coming into contact with the door body (Fig. 18). Then, when the passenger has completely exited the room and is in the passageway, the door body 110 is completely closed as shown in Fig. 19. The door handles 151 and 152 are both in the horizontal first position (I), and the slide roller 140 is spaced apart from the door panel surface. The door handle 152 protrudes together with the door handle 151 from the aisle-side door panel of the door body 110. Only the door handle 151 is provided on the interior-side door panel.

[0029] As described above, an inclined surface that slopes along the direction in which the slide roll moves is provided on the panel surface of the swing door facing the slide rail, and the slide roll abuts at a position close to the slide roll on this inclined surface. Additionally, a door handle is provided on the front and back surfaces of the swing door (rectangular panel surfaces) at a predetermined height, for example, at a height that can be operated appropriately by a wheelchair user, and is rotatable along the panel surface. The door handle rotates around a horizontal axis within a predetermined angular range, and can take either a first position or a second position separated by a predetermined angle. The first position indicates the door is closed, and the second position indicates the door is open. To reiterate, the following procedure should be followed to open a closed swing door. 1) Rotate the doorknob (door handle) 90 degrees counterclockwise from the horizontal position to the vertical position. 2) The roll moves away from the rail and comes into contact with the door panel surface. 3) As a result, the torsion coil spring is compressed in the winding direction, and the spring force acts on the door panel. This causes the door panel to rotate in the opening direction, overcoming the closing force of the door closer and opening slowly. [Industrial Applicability]

[0030] This invention is extremely useful in the field of improving opening door devices for wheelchair users, particularly in public facilities, residences, hotels, ships, and other facilities. [Explanation of symbols]

[0031] 100 Opening door device, 110 Sliding door body, 120 door closer, 130 Torsion coil spring, 133 Extension terminal of torsion coil spring; 140 slide roll, 141 slide rail, 150(151,152) Door handle, 160(161,162,164) Link mechanism, 170A Wedge Inclined Surface, (I) 1st position; (II) Second position.

Claims

1. A swing door device equipped with a door closer that applies a closing force to a swing door, a door handle supported by the swing door and movable between a first position and a second position; a torsion coil spring, one end of which is engaged with the frame of the swing door and the other end of which extends along the plate surface of the swing door, thereby applying a door-opening force to the swing door that counteracts the door-closing force of the door closer; a slide roll supported so as to be movable along the extension direction of the other end of the torsion coil spring, When the door handle is in the first position, the slide roller is separated from the plate surface of the swing door and does not generate the door-opening force, When the door handle is in the second position, the slide roll abuts against the plate surface of the swing door, and the elastic force of the torsion coil spring acts on the swing door to give the swing door an opening force, thereby opening the swing door against the closing force of the door closer.

2. The door handles are arranged in pairs at a predetermined height on the swing door so that they can be operated by wheelchair users, and the pair of door handles are located at both ends of the swing door in the width direction.

3. 3. A swing door device according to claim 1 or 2, wherein the movably provided slide roll is connected to the door handle by a link mechanism or a chain mechanism.

4. A sliding rail extending along the extension direction of the torsion coil spring is fixed to the other end of the torsion coil spring, the sliding roll is movably arranged along this sliding rail, and an inclined surface is arranged on the panel surface of the sliding door facing the sliding rail so that it slopes higher in the direction in which the sliding roll moves, and the sliding roll abuts near the highest point of this inclined surface.

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