JP2007315052A - Folding door connecting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a folding door connecting device having a self-closing function and a braking function when closing a door, in the folding door connecting device for connecting a suspender side door and a door end side door. <P>SOLUTION: This folding door connecting device has gears 10A and 10B fixed to the suspender side door 1 and the door end side door 2. Central shafts 11A and 11B of these gears 10A and 10B are connected by a connecting plate 12. A spring 13 is arranged between one gear 10B and the connecting plate 12 so as to be screwed in when a door rotates in the opening direction. The other gear 10A and the central shaft 11A are connected via a one-way clutch 17 so as to transmit torque when the door rotates in the closing direction. A fluid frictional braking means is arranged on this central shaft 11A. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention has a folding door in which a plurality of doors are connected in a foldable manner, in particular, has two doors, a hanging door-side small door and a door-end-side large door. The upper and lower doorsides of the doorside large door are connected to each other, and an upper suspension car is provided at an approximately middle upper part of the large door, and the upper suspension car runs on a rail provided at the upper part of the door frame to open and close the door. The present invention relates to a connecting apparatus for folding doors.

  Folding doors, especially folding doors composed of small hanging doors and large door-end doors as described above, are particularly easy to use for elderly and disabled people because of the small door opening and closing trajectory and wide opening width. However, there is a need for a self-closing brake device for folding doors that is penetrating the market but can be self-closed with a lighter operating force.

  Various proposals have been made as self-closing brake devices (closers) for folding doors, but there are many that cannot be fully satisfied. For example, in a folding door provided with a closer that also serves as a hinge at the lower part of the suspension side door, it is configured to self-close and brake the suspension side door and the door end side with the self-closing force from the suspension side. Requires strong self-closing force and braking force. Therefore, the operation force when opening the door becomes heavy and is avoided by the user. In addition, there is a gravity hinge type closer that is coaxially installed with the upper suspension car installed almost in the middle of the door-end side large door, but since it is incorporated coaxially with the upper suspension car, it has poor durability. Although it is not as much as the device of the type incorporated in the original, it still requires large self-closing force and braking force.

A closer using a wire-type self-closing device that uses a spring spring for self-closing and an air cylinder for braking is also known (for example, see Patent Document 1). Since the connecting mechanism and the air cylinder and self-closing device are separate and must be built in the upper part of the door, installation is troublesome and the height of the upper part of the door frame becomes large, so a large installation space is required And In addition, although the structure which provides a folding operation | movement return mechanism in the connection part of a door is also described in patent document 1, this braking mechanism is not provided in this return mechanism.
Japanese Patent No. 3321098 (paragraphs, 0089, 0094, FIG. 4, FIG. 18, FIG. 19)

  The problem to be solved by the present invention is that the folding door as described above can be opened and closed with a light operating force, the configuration is simple and can be easily incorporated into the folding door, and it is simple and economical having a self-closing mechanism and a braking mechanism. It is another object of the present invention to provide a folding door connecting apparatus that does not require a large installation space.

  Generally, when opening and closing a door, a large force is required to open and close by applying a force to the suspension base side, but if a force is applied to the door end of the door, the door can be opened and closed with a small force. A folding door consisting of two doors, a small door on the hanging side and a large door on the side of the door, can be considered in a similar manner. If the force is applied to the door, the opening / closing operation force may be smaller than that of the suspension base, and if the opening / closing operation force is applied to the connecting portion of the suspension side door and the door side door rather than the middle part of the door side door , With less power. Therefore, if a self-closing force is applied to the connecting portion, a small operating force is sufficient and a braking force is also small.

  Based on the above consideration, the present invention is a folding door coupling device in which a self-closing mechanism and a braking mechanism are incorporated in a folding door coupling portion, and includes a door end side end of a suspension side door and a suspension of the door side door. There are gears fixed to the original side ends, meshing the gears to connect the central axes with a connecting plate, and when opening and closing the folding door, the hanging side door and the door side door are centered on the central axis In the folding door connecting apparatus which is rotated as follows, an energy storage means is provided so as to accumulate a self-closing force by the rotation of the door when opening in relation to the central axis, and the door is opened by the self-closing force. A folding door connecting device is provided, which is provided with a braking means for braking the rotation of the door when rotating in the closing direction.

  As the energy storage means, a torsion spring or a spiral spring means that is wound by the rotation of the door, a coil spring type that is compressed via a fixed cam and a moving cam having an inclined surface The spring means is used. Further, as the braking means, there are a fluid friction type braking means configured to brake the rotation of the central axis of the gear, a hydraulic type braking means configured to brake the movement of the moving cam, and the like. Can be used in appropriate combinations.

  The present invention is configured as described above, and when the door is opened, the suspension side door and the door end side door rotate about the central axis of the gear connecting the both doors. The self-closing force is stored in the energy storage means provided in the case, and the self-closing force can be rotated in the direction of closing the door. In addition, since the connecting device is provided with a braking means, the door does not close suddenly, but closes slowly, so that a danger that the user is caught in the door or hits the door does not occur. Can be. As described above, the self-closing mechanism and the braking mechanism can be provided simply by connecting the folding doors with the connecting device of the present invention, and it is simple and economical, and can be formed compactly. It can be used easily.

  FIG. 1 is an explanatory view showing an embodiment of a folding door applied to the present invention. The folding door has a hanging side small door (1) and a door side large door (2). The side small door (1) is rotatably attached to the door frame (3) via a hinge (4), and the upper and lower ends of the door end side end of the door end side large door (2) are connected by a connecting device (5). It connects with the upper part and lower part of the suspension side end. The door end side large door (2) has an upper suspension car (6) at a substantially intermediate position corresponding to the width of the suspension origin side small door, and the upper suspension car (6) is located above the door frame (3). The folding door opens and closes by reciprocating on the rail (7) provided on the frame.

  FIG. 2 is an explanatory view of the opening and closing of the folding door as seen from above, and an upper suspension car that suspends the large door (2) when a handle (8) provided at the door end of the large door (2) is pressed. (6) moves on the rail (7) toward the small door (1), and the small door (1) starts to rotate around the hinge (4) of the suspension and The connecting device (5) also rotates while synchronizing.

  Referring to FIG. 3, the connecting device (5) has substantially L-shaped mounting brackets (9A) and (9B) that are attached to the small door (1) and the large door (2). Gears (10A) and (10B) are fixed to (9A) and (9B), respectively, and the central axes (11A) and (11B) of the gears (10A) and (10B) are the gears (10A) and (10B). ) Are coupled by the coupling plate (12), and each door end is covered with an end face cover not shown. The connecting device (5) is provided with energy storage means for storing a self-closing force by the rotation of the door when opening in relation to the central axis, and the direction in which the door is closed by the self-closing force. A braking means is provided for braking the rotation of the door when it is rotated.

  The energy storage means and the brake means can be variously configured. In the embodiment shown in FIG. 3, the spring means wound when the door rotates in the opening direction is used as the energy storage means, and the brake means is used as the energy storage means. A fluid friction type braking means is provided that provides resistance to rotation of the central axis when the door is closed.

  Specifically, in FIG. 3, the base end of the central shaft (11B) of one gear (10B) is fixed to the gear (10B) side, the tip is rotatably supported by the connecting plate (12), and the torsion A spring (13) such as a spring or a spiral spring has one end (14) held on the gear (10B) side and screwed when the door is rotated in the opening direction, and the other end (15) is connected to the connecting plate (12). And is covered with a cover (16).

  The tip of the central shaft (11A) of the other gear (10A) is rotatably attached to the connecting plate (12), and the base end is connected to the gear (10A) via a one-way clutch (17). Yes. The one-way clutch (17) does not transmit rotational force between the gear (10A) and the central shaft (11A) when rotating in the opening direction of the door, and when rotating in the direction of closing the door. , Function to transmit the rotational force between the central shaft (11A) and the gear (10A). The central shaft (11A) passes through the braking device (18) enclosing the viscous fluid, and a resistance plate (19) is provided in the penetrating portion, and the braking device (18) is connected to the connecting plate. It is fixed to (12).

  With the above configuration, according to the embodiment shown in FIG. 3, when the door is opened, the spring (13) is wound and the self-closing force is accumulated, and the self-closing force rotates the door in the closing direction. Can move. Further, when the braking device (18) is rotated in the direction to open the door, the rotational force is not transmitted to the gear (10A) side by the one-way clutch (17). When rotating in the closing direction, the braking device can be operated to prevent the door from closing suddenly.

  FIG. 4 shows an embodiment in which the position of the connecting plate (12) is different from the embodiment shown in FIG. That is, the gears (10A) and (10B) are fixed to the mounting brackets (9A) and (9B) via the spacers (20A) and (20B), and the connecting plate (12) is connected to the gears (10A) and (10B). ) The base end of the central shaft (11B) of one gear (10B) is fixed to the gear (10B) side, and the tip rotates the top plate (22) of the case (21) fixed to the connecting plate (12). It penetrates as much as possible and is secured. In this case (21), a spring (13) is housed, and one end (23) is wound on the connecting plate (12) side so that the spring (13) is wound when the door is rotated in the opening direction. The other end (24) is attached to the central axis (11B).

  The braking device (25) is fixed on the connecting plate (12) and can adjust the braking force acting on the central shaft (11A) connected to the gear (10A) via the one-way clutch (17). Is provided. The braking force is adjusted by inserting the adjusting shaft (26) into the central shaft (11A) that passes through the connecting plate (12) and rotating the adjusting shaft (26) to position the braking force in the braking device (25). The resistance plate (27) is moved back and forth in the axial direction to change the area facing the control wall (28) provided in the braking device so that the fluid friction resistance can be varied. can do.

  The embodiment shown in FIG. 4 is basically the same as the embodiment shown in FIG. 3, and after the door is opened, the door can be automatically closed with a braking action.

  The embodiment shown in FIG. 5 shows still another embodiment, and is configured so that the spring and the braking device can be built in the mounting bracket. In FIG. 5, gears (10A) and (10B) are fixed to mounting brackets (9A) and (9B) via spacers (20A) and (20B), and the central axis (11B) of gear (10B) is rotatable. The tip is fixed to the connecting plate (12) in a non-rotating state through the gear (10B). A spring guide (29) is fixed to the lower end in FIG. 5 of the central shaft (11B), and one end (30) is wound around the spring (13) when the door is rotated in the opening direction. (29) and the other end (31) is held by the mounting bracket (9B).

  The tip of the other central shaft (11A) is attached to the connecting plate (12) via a one-way clutch (17), and the lower end is attached to the gear (10A), spacer (20A), and mounting bracket (9A). It penetrates rotatably and extends below the mounting bracket (9A). A brake device (32) is attached to the mounting bracket (9A), and when the resistance plate or the resistor (33) provided on the central shaft rotates in the viscous fluid, the brake is rotated by receiving a fluid frictional resistance. It is configured as follows. The connection plate (12) is provided with a preset screw (34), and the connection plate (12) and the gears (10A) and (10B) can be temporarily fixed by screwing the preset screw (34). Thus, such a preset screw can be appropriately provided in the coupling device of the present invention.

  According to the embodiment shown in FIG. 5, the whole coupling device can be configured more compactly, and when attached to a folding door, a large attachment space is not required and the appearance is good.

  In the embodiment shown in FIG. 6, a compression spring such as a coil spring is used as an energy storage means, and when the door is rotated in the opening direction, the spring is compressed via a cam and the spring is extended. In this embodiment, the spring force is used as a self-closing force, and the door is rotated in the closing direction via the cam. More specifically, gears (10A) and (10B) are fixed to mounting brackets (9A) and (9B) attached to the doors (1) and (2) via spacers (20A) and (20B). The central axes (11A) and (11B) of the gears (10A) and (10B) are connected by a connecting plate (12). The center shaft (11A) of one gear (10A) is rotatably attached at the tip end to the connecting plate (12) and the base end is loosely fitted to the gear (10A), the spacer (20A) and the mounting bracket (9A). However, one end may be rotatably attached to the gear (10A) side or the connecting plate (12) side, and the other end may be fixed.

  The tip of the central shaft (11B) of the other gear (10B) is fixed to the connecting plate (12) in a non-rotating state, and the base end rotates to the gear (10B), the spacer (20B) and the mounting bracket (9B). In FIG. 6, the piston rod (35) is detachably connected to the lower portion in a non-rotating state. The piston rod (35) extends through an auxiliary bracket (36) fixed to the mounting bracket (9B) with a mounting screw and into a cylinder (37) attached to the auxiliary bracket (36). ) Is rotatably passed through a center hole (39) of a fixed cam (38) inscribed and fixed to the upper portion of the fixed cam (38), and an inclined surface (40) is provided on the lower surface of the fixed cam (38).

  In FIG. 6, on the outer surface of the lower part of the piston rod (35) passing through the fixed cam (38), there are formed a non-circular shaped sliding portion (41) having a modified cross-sectional shape having flat portions on both sides. A movable cam (43) having an insertion hole (42) shaped to fit into the sliding portion (41) is fitted so as to move straight forward and backward (up and down in FIG. 6). The movable cam (43) has an inclined surface (44) combined with the inclined surface (40) of the fixed cam (38) at the upper part, and a piston (46) is applied to the lower part via a spacer (45). In contact with the cylinder (37).

  The cylinder (37) is filled with hydraulic oil such as appropriate oil, and the piston (46) has a flow hole (47) through which the hydraulic oil flows when the piston descends in FIG. 6 is provided on the moving cam (43) side of the flow hole (47) so as to close the flow hole (47) when rising in FIG. 6 and to open the flow hole (47) when lowered. It has a flapper valve (48) and is pressed against the movable cam (43) by a compression spring (49).

  In FIG. 6, the compression spring (49) is provided between the lower surface of the piston (46) and the upper surface of the adjustment nut (50), and rotates the spring adjustment shaft (51) to move the adjustment nut (50). Thus, the compression force can be adjusted. The adjustment nut (50) is prevented from rotating by a holding frame (52) having a substantially U-shaped cross section.

  A speed regulating valve (54) threadedly engaged with the piston rod (35) in FIG. 6 is inserted through the piston rod (35) by an adjusting shaft (53) so as to be movable up and down in FIG. The lower part (55) of the speed valve (54) in FIG. 6 is tapered so that the lower part has a large diameter, and is inserted into an adjustment hole (56) provided in the piston (46).

  With the above configuration, when the door is rotated in the opening direction, the movable cam (43) and the fixed cam (38) rotate relative to each other, so that the inclined surfaces (40) and (44) act. The moving cam (43) moves backward (moves downward in FIG. 6), the compression spring (49) is compressed, and a self-closing force is accumulated. When the door is closed, the moving cam (43) moves forward (moves upward in FIG. 6) by the compression force (self-closing force), and the moving cam (43) is moved by the sliding portion (41). Since it is prevented from rotating, the door can be rotated by the action of the inclined surfaces (40), (44), via the fixed cam (38) side, that is, the gear (10B), and the door can be closed. .

  When the moving cam (43) moves downward in FIG. 6, the hydraulic oil in the cylinder (37) flows into the moving cam (43) through the flow hole (47) of the piston (46). When the cam (43) moves upward, the flow hole (47) is blocked by the flapper valve (48), so that the hydraulic oil passes through a narrow gap between the speed control valve (54) and the adjustment hole (56). And gradually flows toward the compression spring (49). As a result, when the door rotates in the closing direction, the rotation can be braked.

  In the embodiment shown in FIG. 6, the hydraulic braking means is used as described above. However, the energy storage means using the cam and the compression spring shown in FIG. 6 and the braking means shown in FIGS. it can. In this case, in FIG. 6, a braking device as shown in FIGS. 3 to 5 may be incorporated on the other gear (10A) side where the energy storage means is not provided.

The front view of a folding door. Explanatory drawing of a movement of a folding door. Explanatory drawing which shows one Example of this invention. Explanatory drawing which shows another Example. Explanatory drawing which shows another Example. Explanatory drawing which shows another Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Suspension side door 2 Door end side door 5 Connection device 9 Mounting bracket 10 Gear 11 Center shaft 12 Connection plate 13 Spring 17 One-way clutch 18, 25, 32 Braking device 35 Piston rod 37 Cylinder 38 Fixed cam 40, 44 Inclined surface 43 Moving cam 46 Piston 49 Compression spring

Claims (7)

  When there is a gear fixed to the door end side end of the suspension side door and the suspension end side end of the door end side door, meshing the gears and connecting the central axes with a connecting plate, and opening and closing the folding door In the folding door connecting device in which the suspension side door and the door end side door are rotated about the central axis, the self-closing force is generated by the rotation of the door when opening in relation to the central axis. An apparatus for connecting folding doors, characterized in that energy storage means is provided so as to accumulate and braking means is provided for braking the rotation of the door when the door is rotated in the closing direction by the self-closing force.   2. The folding door coupling device according to claim 1, wherein the energy storage means includes spring means provided so as to be wound when the door rotates in the opening direction.   The central axis of one of the gears is fixed to the gear side or the connecting plate side, and when the door is rotated in the opening direction, the connecting plate side or the gear side that rotates relative to the central axis and the gear side The apparatus for connecting folding doors according to claim 2, wherein the spring means is provided between central axes.   The central axis of one of the gears is not rotated when the door is rotated in the opening direction, but is rotated when the door is rotated in the closing direction. 3. The folding door coupling device according to claim 2, wherein a fluid friction type braking means using a viscous fluid is coupled to the central shaft.   The energy storage means includes a fixed cam having an inclined surface fixed to the gear side so that a central axis of one gear passes therethrough, and the fixed cam so as to linearly move back and forth along the central axis when the door is opened and closed. A moving cam having an inclined surface combined with the moving cam, and being compressed by the backward movement of the moving cam, and the moving cam is advanced by the compression force and rotated in the direction of closing the door via the fixed cam. The folding door connecting device according to claim 1, further comprising a spring means.   6. The folding door according to claim 5, wherein the moving cam is provided in a cylinder, and the cylinder is provided with hydraulic braking means for applying braking to the advance of the moving cam when the moving cam advances. Connecting device.   The central axis of the other gear not provided with the energy storage means does not rotate when the door is rotated in the opening direction, and the one-way clutch is rotated so as to rotate when the door is rotated in the closing direction. 6. The folding door coupling device according to claim 5, wherein the folding apparatus is attached to the gear side or the coupling plate side via a fluid friction type braking means using a viscous fluid.

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