JP2011163025A - Temporary-door-opened-state maintaining device of automatic door closing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a temporary-door-opened-state maintaining device of an automatic door closing apparatus which maintains a door-opened state only within a preset time long enough to enable the safe entrance and exist of a person or baggage after a door is opened, and which automatically closes the sliding door after a lapse of the preset time. <P>SOLUTION: The automatic door closing apparatus makes the sliding door D closed by being automatically moved in a closing direction after being opened. A door-opened-state maintaining mechanism 1, which is constituted to temporarily maintain the door-opened state by a stopper 12 operating with a time delay, is mounted on the side of the sliding door D. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a temporary opening state maintaining device in an automatic closing device, and in particular, when opening a sliding door and then automatically closing it with an attached automatic closing device, the opening state is maintained for a certain period of time, and the safety is maintained. The present invention relates to a temporary open state maintaining device in an automatic door closing device that allows a person to go in and out and a baggage in and out.

  Conventionally, as a device for automatically closing a sliding door, there is a hanging door type in which a sliding door is suspended and supported via a runner on a suspension rail disposed on a ceiling. This device for automatically closing the sliding door is arranged so that the suspension rail is inclined so that one end side is lower than the other end side, and the opened sliding door is automatically closed by its own weight and the inclination angle of the suspension rail. A balance weight is suspended via a rope so as to move up and down in synchronization with the opening / closing operation of the sliding door, and configured to automatically close with the weight of the balance weight. There are things.

By the way, in the device for automatically closing the conventional sliding door, the opened sliding door is automatically closed by the inclined rail and the weight of the sliding door or by the balance weight, but when the sliding door has been opened. Alternatively, when the opening force is released, the sliding door immediately closes due to its own weight or the action of the balance weight.
For this reason, after opening the door, keep it open for the time it takes for people to enter and exit safely, so that the sliding door is supported by hand, or when both hands are blocked, There was a problem that an operation such as putting an obstacle between the sliding door and the opening frame had to be performed.

  In view of the problems of the above-described conventional automatic door closing device, the present invention maintains and sets the open door state only within a preset time period in which people can safely enter and leave and load / unload luggage after opening. It is an object of the present invention to provide a temporary open state maintaining device in an automatic closing device that automatically closes a sliding door after a lapse of time.

  In order to achieve the above-mentioned object, the temporary opening state maintaining device in the automatic closing device of the first invention is an automatic closing device in which, after opening, the sliding door automatically moves in the closing direction and closes. In the present invention, an open door maintenance mechanism configured to temporarily maintain the open door state by a stopper that operates with a time delay is attached to the sliding door side.

  Further, in order to achieve the same object, the temporary opening state maintaining device in the automatic closing device of the second invention is an automatic closing device in which the sliding door is automatically moved in the closing direction after the opening. In the door device, on the sliding door side, the open door maintenance mechanism configured to temporarily maintain the open door state by a stopper that operates with a time delay, and the sliding door opening direction operates lightly, with respect to the closing direction In this case, a reduction gear configured to reduce the speed by a one-way clutch and a gear train is attached.

  In this case, the open door maintaining mechanism is composed of a link that swings when the sliding door is opened and closed, a one-way clutch that temporarily stops the operation of the sliding door in the closing direction by swinging the link, and a gear device that includes a gear train. can do.

  Further, the open door maintenance mechanism is composed of a link that swings when the sliding door is opened and closed, and a gear device that includes a one-way clutch that temporarily stops the operation of the sliding door in the closing direction by swinging the link. can do.

  According to the temporary opening state maintaining device in the automatic door closing device for the sliding door of the first aspect of the present invention, when the opening force for the sliding door is released at any position where the sliding door has been opened, the sliding door is moved by the automatic door closing device. The sliding door does not close for a preset time until it starts to move in the closing direction, and it is designed to maintain the open door state, especially for people with slow movements such as physically disabled people and elderly people. In addition, it is safe to go in and out of a wheelchair, and because it is simple in structure and attached to the upper part of the sliding door, it is not exposed to the outside, so it does not impair the beauty and easily Can be implemented.

  Moreover, according to the temporary open state maintenance device in the automatic closing device of the sliding door of the second invention, when the opening force for the sliding door is released at the position where the sliding door has been opened, the sliding door is moved by the automatic closing device. The sliding door is kept open without closing for a preset time until it starts to move in the closing direction, and the sliding door is automatically closed by the automatic closing device after the set time has passed. However, the speed reducer attached at this time automatically causes the sliding door to be braked and closes at a predetermined slow speed, so that people with slow movements, especially those with physical disabilities, elderly people, sick people, etc. In addition, it is safe to go in and out of a wheelchair, and the structure is simple and it can be attached to the upper part of the sliding door. It can also be carried out easily without existing sliding door that.

  In addition, it is composed of a link that swings when the sliding door is opened and closed, and a gear device that is configured by a one-way clutch and a gear train so that the link is swinged so that the sliding door is driven only in the closing direction. Therefore, the structure of the reduction gear is simple, the operation at the time of opening the door is light, smooth and reliable, and the opening state can be temporarily and reliably maintained, and the door can be safely moved in and out. The opening maintenance time can be easily adjusted by changing the ratio.

  In addition, a link that swings when the sliding door is opened and closed, and a one-way clutch and a one-frame feed mechanism that are driven at a slow speed only when the sliding door is operated in the closing direction by swinging the link, By adjusting the operation of the feed mechanism, it is possible to easily set the maintenance time of the open door state, and it is possible to reduce the size of the apparatus, and thus it can be applied to a small sliding door.

It is a front view at the time of the closed state of the sliding door of 1st Example of the temporary open state maintenance apparatus in the automatic closing device of this invention. It is an enlarged side view of the principal part. It is a front view of an open door maintenance mechanism. A gear apparatus is shown, (A) is sectional drawing, (B) is a front view. It is a front view which shows the state which attached the cam to the suspension guide rail. A self-closing apparatus is shown, (A) is a front view, (B) is a bottom view, (C) is a left side view. The speed reducer is shown, (A) is a partially broken front view, (B) is a sectional view. It is a front view of the opening maintenance mechanism of 2nd Example of the temporary opening state maintenance apparatus in the automatic closing device of this invention. FIG.

  Hereinafter, an embodiment of a temporary open state maintenance device in an automatic closing device of the present invention is described based on a drawing.

1 to 7 show a first embodiment of a temporarily opened state maintaining device in an automatic closing device of the present invention.
The type of the sliding door D is not particularly limited, but in this embodiment, it is a suspension door type, and is attached to the upper part of the sliding door D with a suspension guide rail G disposed at the upper part of the opening frame. A self-closing system that supports a suspension movement via two (in the illustrated embodiment) runners R1 and R2 and that automatically closes the sliding door D opened on the fixed side, for example, the opening frame side. The apparatus 2 is provided, and the sliding door D side is further provided with a temporary opening state maintaining apparatus A for maintaining the opening state for a preset time.

  The suspension guide rail G has a length corresponding to the total moving distance when the sliding door D is opened and closed, and is fixed to the upper frame of the opening frame with screws or the like, and the rail base GB The lower part is composed of a rail piece GR integrally formed in an L shape so that the runners R1 and R2 can be movably locked. This is not particularly limited, but aluminum or aluminum alloy is used. It is integrally formed by drawing or the like.

  This temporary open state maintaining device A is fixed to the open side maintenance mechanism 1 attached to the sliding door D side, and the front side surface of the suspension guide rail G that operates the open door maintenance mechanism 1 at a fixed position by moving the sliding door. The cam 5 is configured.

As shown in FIGS. 2 to 4, the open door maintaining mechanism 1 that is the main body of the temporary open state maintaining device A is particularly limited to a position that does not interfere with the runners R <b> 1 and R <b> 2 at the upper end of the sliding door D. Although it is not, it attaches via the bracket B which has an L shape.
This open door maintenance mechanism 1 can swing through a link shaft 11S so as to swing in the L-shaped bracket B by a cam 5 provided on the suspension guide rail G side according to the opening / closing movement of the sliding door D. A link 11 supported on the link 11, a rack 15 attached to the distal end of the link 11 and moved in accordance with the swinging link 11, and attached to the link proximal end side to prevent the link 11 from returning to swing. A stopper 12 that acts, a push-up link 13 that swings the link 11 in the push-up direction by the movement of the sliding door D, and a gear device that maintains the opened state of the sliding door D for a predetermined period of time. 4 is configured.

The link 11 is rocked on the base end side of the link shaft base 11D via the link shaft 11S, the mounting position of which can be adjusted by the adjusting screw 11c and the fixing screw 11d in the L-shaped bracket B. A pulling spring 14 is stretched between a part of the link 11 and the bracket B so that the link 11 swings via the push-up link 13 in accordance with the opening operation of the sliding door D. For example, the position is automatically returned to the position of the solid line shown in FIG.
When the link 11 is pushed up in the direction of the arrow U shown in FIG. 3 by the push-up link 13 and swings, a stopper 1S made of a leaf spring or the like is attached to the bracket B to restrict the maximum allowable push-up position. May project.
Further, the tip of the stopper 12 that is swingably attached to the base end side of the link 11 via the shaft 11b is not particularly limited, but is smooth against the top surface of the rail piece GR of the suspension guide rail G. It is formed in such a manner that a resin chip having a small frictional resistance is attached in an arc shape so as to be in sliding contact with the resin.

The length of the stopper 12 becomes a position perpendicular to the top surface position of the rail piece GR of the suspension guide rail G at a position before the link 11 is swung by the action of the push-up link 13, that is, a solid line position in FIG. The lower end surface of the stopper 12 abuts on the rail piece GR and is determined to be slidable, and swings in the direction indicated by the arrow U shown in FIG. Thus, the stopper 12 slows down the swing of the link 11 and maintains the time when the sliding door is open.
In addition, a tension spring 12S for recovery is stretched on the stopper 12 so that the stopper 12 does not tilt opposite to a predetermined tilting direction from a vertical position serving as a dead point, and the stopper 12 acts. A protrusion 12T that regulates the swing angle of the stopper 12 is provided on the bracket B.

The push-up link 13 is swingably supported by the link 11 via the shaft 11a. In this case, the distance L1 between the shaft 11a supporting the push-up link 13 and the link shaft 11S and the link shaft 11S and the stopper are provided. The distance L2 between the shafts 11b to be supported is set to be equal, and thereby the link 11 is balanced. Further, the roller 13R is supported at the lower end of the push-up link 13 so as to freely rotate. When the roller 13R slides and moves on the upper surface of the cam 5 which is attached to the side surface of the suspension guide rail G and the upper surface of the roller 13R is inclined, the push-up link 13 is moved in the vertical direction according to the shape of the upper surface of the cam 5. Thus, the link 11 is swung around the shaft 11b.
The guides 13G and 13G project on the bracket B side so as to slide in contact with both side surfaces of the push-up link 13 so that the push-up link 13 moving in the vertical direction can always be regulated and moved in a vertical state.
Further, when the sliding door D is moved in the closing direction, the roller 13R is moved along the front side surface of the cam 5, thereby swinging the push-up link 13 and the roller 13R so as to protrude toward the front surface of the suspension guide rail G. Thus, the push-up link 13 and the roller 13R are prevented from colliding with the cam 5.

  The rack 15 supported on the link tip via the shaft 11e is not particularly limited, but is inserted into the gear device 4 together with the link tip, and the lower portion is disposed so as to be able to protrude and retract from the gear device 4. The pinion 42 disposed in the gear device 4 is engaged with the pinion 42, and the pinion 42 in the gear device 4 is rotated in the forward direction or the reverse direction by the swing of the link 11.

As shown in FIG. 4, the gear device 4 includes a box-shaped main body case 40 that is disposed and fixed in the bracket B, and a rack 15 that is rotatably supported and inserted into the main body case 40. The one-way clutch 43 and a plurality of gears 45, 46, 48 are combined.
The boss portion of the pinion 42 is engaged with the gear 45 of the gear pair via the one-way clutch 43, the tooth portion of the pinion 42 is protruded from the gear 45, and can be engaged with the pinion 42, and the pinion 42 is further connected to the shaft 44. The rack 15 is slid between the pinion 42 and the roller or bearing 41 so that the main case 40 is rotatably supported and the meshing state with the pinion 42 is always maintained by the movement of the rack 15. The rack 15 can be slidably moved so as to always press the rack 15 toward the pinion 42.
The roller or bearing 41 is rotatably supported by the body case 40 of the gear device 4 by a shaft 41S.
Thus, the gear train is selectively rotated through the pinion 42 only when the sliding door D moves in the opening direction by the action of the one-way clutch 43 built in between the pinion 42 and the gear 45. Like that.

Further, the pinion 42 supported by the shaft 44 supports the one-way clutch 43 and a gear 45 having a diameter larger than that of the pinion 42 coaxially, and when the pinion 42 rotates in one direction, the one-way clutch 43. The gear 45 is rotated via the gear 45 so that the gear 45 does not rotate when rotating in the opposite direction. Further, the gear 45 is meshed with the gear 46 to form a gear pair. It arranges and constitutes a gear train.
The gear 46 is rotatably supported on a shaft 47 disposed in parallel with the shaft 44. In order to dispose the two or more pairs of gears in a compact manner, the two gears 44 and 47 which are parallel to each other are opposed to each other. The small gear 46a and the large large gear 46b are coaxially formed on the gear 46, the gear 45 is meshed with the small gear 46a, and the shaft 44 is coupled to the large gear 46b. Meshed with the small gear 48a of the supported gear 48.

In some cases, the large gear 48b of the gear 48 may be a flywheel having no tooth profile. The gear ratio of the small gear and the large gear meshing with each other is not particularly limited, but by setting the gear ratio to 5 to 10, the rotation of the pinion 42 is gradually increased, and the final stage The large gear 48b or the flywheel is rotated at a high speed, thereby extending the return time of the link 11, increasing the time until the sliding door starts to close, and maintaining the open door state.
Note that the time until the sliding door starts to close can be adjusted by changing the gear ratio of the gear pair.

By the way, the sliding door type sliding door D has runners R1 and R2 projecting at the positions of both ends of the top surface of the sliding door, or at both ends and the central portion in the case of a large sliding door. The sliding door D can be stably suspended and supported on the top surface of the GR so that it can roll, and the open door maintenance mechanism 1 is disposed between the runners R1 and R2 at both left and right ends. The self-closing device 2 is disposed on the opening frame side of the end portion in the direction of closing the sliding door D, and the end of the rope W such as a wire rope wound around the self-closing device 2 is a part of the sliding door D, for example, It is stretched so as to be fixed to the casing of the runner R2, etc. so that it can be smoothly unwound and wound when the sliding door D is opened and closed. Try to close.
At this time, the reduction gear 3 is operated so that the sliding door does not close at high speed.

  Although the self-closing device 2 is not particularly limited, as shown in FIG. 6, the self-closing device 2 is formed in a box shape partitioned by an outer case 21 having a mounting plate 22, and the rope W is formed therein. Winding drum 23 and its lid 24 to be wound, and a flat spring which is arranged inside winding drum 23 and fixed at one end thereof and energized in the direction of winding the rope W are wound in a spiral shape a required number of times. A rotating torsion spring (not shown), a support shaft 26 that fixes the other end of the torsion spring, and a handle 25 that adjusts the urging force of the torsion spring by rotating the support shaft 26, the main parts of which are It is configured.

In this case, the material of the torsion spring, the plate thickness, the width, the number of windings, and the like are the energizing force in the winding direction of the rope W of the winding drum 23 required for winding the rope W having a required length. Select or set as appropriate according to the size.
Further, the outer case 21 is formed with locking holes 21b and 21b at predetermined intervals along the circumferential direction of the handle 25 fixed to the support shaft 26, and the magnitude of the urging force of the torsion spring is adjusted. The handle 25 is locked in the locking hole 21b.
In order to easily and reliably release and lock the handle 25 with the lock hole 21b, the handle is provided with a pressing means 27 having a spring 28 for pressing the handle 25 against the outer surface of the outer case 21. .

The reduction gear 3 is disposed between the runners R1 and R2, or at least one of the runners R1 and R2, for example, the casing 30 of the runner R2. The arrangement position of the reduction gear 3 is not limited.
Hereinafter, the case where it arrange | positions in the casing 30 integrally with runner R2 is demonstrated.

  As shown in FIG. 1, the speed reducer 3 has two shafts 31 and 32 arranged in parallel in a casing 30 that can be attached to the sliding door side, and a large gear 33 is disposed on the one shaft 31. The cylindrical boss portion 33a is rotatably inserted, and the runner R2 is inserted into the outer periphery of the boss portion 33a. In this case, the one-way clutch 37 is provided between the runner R2 and the boss portion 33a. The runner R2 is rotated together with respect to one direction of the large gear 33, but the runner R2 is not rotated with respect to the rotation in the opposite direction. A gear 34 in which a small gear 34a and a large gear 34b are integrated on the side opposite to the shaft 33 is coaxially supported so that the large gear 33 and the one-way clutch 37 are individually rotated, and the other shaft 32 includes a large gear 33, a small gear 34a, Sometimes to mesh, the large gear 35b, a gear 35 which is integral with the pinion 35a, and the large gear 34b engaged, and supported rotatably and small gear 36 with a flywheel 3W, constitute.

  The one-way clutch 37 is not particularly limited, and is configured by inserting a ball or a roller into a groove 38 that is formed in the runner R2 so as to be inclined in the circumferential direction, whereby only in one direction, that is, The power is transmitted to the large gear 33 side only in the direction in which the sliding door D is closed.

As shown in FIG. 5, the cam 5 fixed to the front side surface of the suspension guide rail G is an inclined surface 5a whose upper surface is lowered at the front end side in the opening direction of the sliding door D, and is higher or lower than the rear end side of the inclined surface 5a. When the roller 13R slides on the inclined surface 5a in the X direction where the sliding door D opens, the push-up link 13 is moved upward by the height difference H of the inclined surface 5a. In this position, the link 11 is pulled back by the action of the pulling spring 14 at the position where the cam 5 is passed, and the sliding door is fully opened in the state where the link 11 is returned to the solid line position in FIG. The end surface 5b is an inclined surface.
As a result, when the sliding door D moves in the Y direction, the roller 13R moves along the front side surface of the suspension guide rail G when the sliding door D moves and moves in the Y direction while maintaining the position where the link 11 is lowered. When the roller 13R comes into contact with the side end surface 5b of the cam 5, the roller 13R is pushed out to the front side of the cam 5 according to the inclined surface of the side end surface 5b, thereby preventing collision with the cam 5. The roller 13R can be moved backward.
The position of the cam 5 is not particularly limited. However, as shown in FIG. 1, when the sliding door D arrives at a predetermined position immediately before the sliding door D is completely closed, 13R is in sliding contact with the cam 5.

  Next, operation | movement of the temporarily open state maintenance apparatus in this automatic closing apparatus is demonstrated.

When the sliding door D is moved from the closed position shown in FIG. 1 in the opening direction (leftward in FIG. 1), the rope W of the self-closing device 2 is rewound according to the moving amount of the sliding door D, and the torsion spring The urging force is increased, and the sliding door D is automatically closed. As the sliding door D moves in the opening direction, the runner R2 that rolls on the suspension guide rail G idles like the runner R1 by the action of the one-way clutch 37 and does not transmit power to the large gear 33 side. The sliding door D can be opened lightly without causing deceleration resistance.
Further, the roller 13R of the push-up link 13 also moves in accordance with the movement of the sliding door D, and moves in sliding contact with the inclined surface 5a on the upper surface of the cam 5 at the position of the cam 5, depending on the shape of the cam 5. Thus, the push-up link 13 is pushed up against the spring, and the link 11 is swung.
In this case, the pinion 42 meshed with the rack 15 is rotated by the rack 15 attached to the end of the link, but the rotation to the gear train is not transmitted by the one-way clutch 43, so that the sliding door D can be easily opened. it can.

Then, when the sliding door D passes the position of the cam 5 and moves further in the opening direction, the rope W of the self-closing device 2 is continuously rewound so as to overcome the urging force of the torsion spring, and the sliding door D It can be opened to the end point.
By the time the cam 5 passes, the link 11 swings by pulling the tension spring 14 up to the set maximum swing angle θ2, and the stopper 12 attached to the link 11 has an arc shape. The lower end moves along the top surface of the rail piece GR of the suspension guide rail G, and tilts in the direction of the arrow Z shown in FIG. 3 according to the swing angle of the link 11, and is the maximum regulated by the protrusion 12T. Swings to angle θ1.

  Then, when the opening of the sliding door D is completed, that is, when the force for opening the sliding door D is released, the sliding door D winds the rope W by the urging force of the torsion spring unwound from the self-closing device 2. A force is applied to the sliding door D in the closing direction, and the sliding door D is moved in the closing direction.

In this case, a force returning to the link 11 by the action of the tension spring 14 acts on the link 11, so that the pinion 42 meshed with the rack 15 attached to the tip of the link 11 rotates and includes gears 45, 46 and 48. It is transmitted to the gear train.
When the pinion rotates in the return direction of the link 11, the one-way clutch 43 interposed between the pinion 42 and the gear 45 acts, and the rotational force of the pinion 42 is a gear composed of gears 45, 46, and 48. As a result, the swing return speed of the link 11 is decelerated and the steep return of the link 11 is prevented.
Thus, until the link 11 is returned to the original position shown in FIG. 1 by the pulling spring 14, the lower end of the stopper 12 comes into sliding contact with the top surface of the rail piece GR, and the sliding door D is braked. A state where it is temporarily stopped at the position where it has been opened, that is, an open door state is maintained.

Next, when the link 11 is returned to the original position shown in FIG. 1 by the tension spring 14, the stopper 12 is also in the vertical position and the push-up force of the link 11 is prevented, and the rotation of the pinion 42 by the rack 15 is stopped. The direction clutch 43 is released, and the sliding door D is closed at a speed set by the self-closing device 2.
However, the reduction gear 3 is attached to the sliding door D, and the one-way clutch 37 acts on the movement of the sliding door D in the closing direction, so that the rotational force of the liner R2 is transmitted to the large gear 33 side. The flywheel is rotated at a high speed by the action of the gear train, whereby the liner R2 is braked, the closing speed of the sliding door D is reduced, and the door is closed at a slow speed.

At this time, the push-up link 13 and the roller 13R attached to the link 11 are in contact with the rear end surface of the cam 5 by the sliding door D moving in the closing direction.
Since the cam 5 has an inclined side end surface 5b on the rear end side, the inclined surface allows the roller 13R to be pushed forward of the cam 5, avoiding a collision with the cam 5, and sliding doors. D continues to move in the closing direction and is completely closed.
When the roller 13R passes the position of the cam 5, it automatically returns to the original position, and when the sliding door is opened next, the inclined surface 5a of the cam 5 and the roller 13R can contact and slide.

Moreover, 2nd Example of the open door maintenance mechanism main body of this invention is shown in FIGS.
The open door maintenance mechanism 1 in the second embodiment is more compact than the first embodiment, and the operation is the same.
The open door maintenance mechanism 1 is attached to the upper end portion of the sliding door D via an L-shaped bracket B, and a link 11 that swings according to the opening / closing movement of the sliding door D, a stopper 12, a push-up link 13, A gear device 4A driven by swinging is incorporated.

As in the first embodiment, the link 11 is supported by a link shaft base 11D whose mounting position can be adjusted so as to be swingable via a link shaft 11S, and a rack 15 is attached so as to hang from the tip of the link 11. The link base end side is provided with a stopper 12 that prevents the link 11 from swinging back through the shaft 11b, and the intermediate part is a push-up link that swings the link 11 in the push-up direction by the movement of the sliding door D. 13 is attached.
In the second embodiment, the spring for returning the swing of the link 11 is a kick spring 14S, which is disposed between the bracket B and the tip of the link, and the link 11 is always moved downward by the action of the kick spring 14S. Press down.

Further, the lower end shape and length of the stopper 12 are formed in an arc shape so as to be in sliding contact with the top surface of the rail piece GR in the same manner as in the first embodiment, and when the stopper 12 is in contact with the top surface of the rail piece GR. In this case, the sliding door D is tilted in accordance with the opening operation.
At the lower end of the push-up link 13, a freely rotating roller 13R is supported, and when the upper surface of the cam 5 attached to the side surface of the suspension guide rail G is slidably moved, the push-up link 13 is interposed, as in the first embodiment. Thus, the link 11 is swung.
Further, the rack 15 supported on the link tip via the shaft 11e and the link tip are disposed so as to be inserted into the gear device 4A that temporarily maintains the sliding door D in the open state. The pinion stored in the gear device 4A is rotated during the movement.

As shown in FIGS. 8 to 9, the gear device 4A in the second embodiment is disposed and fixed in the bracket B and meshes with the rack 15 inserted in the main body case 40 of the gear device 4A. The pinion 42, the one-way clutch 43, the speed increasing gear group, and the one-frame feed mechanism are configured.
A pinion 42 that is rotatably supported by a shaft 44 supports a gear 45 coaxially with the pinion 42 via a one-way clutch 43, and is supported by a shaft 47 so as to increase the speed relative to the gear 45. A ratchet gear 49 for the frame feed mechanism is provided. A one-frame feed cam 50 is disposed on the ratchet gear 49.
As a result, the ratchet gear 49 to be rotated at a high speed is reliably fed one tooth at a time so as to prevent the ratchet gear 49 from rotating at a speed higher than the set speed.
A roller or bearing 41 is provided on the back surface of the rack 15 so that the meshing state with the pinion 42 is always maintained even if the rack 15 moves in accordance with the swing of the link 11.

Next, the operation in the second embodiment will be described.
Also in the second embodiment, the operations of the self-closing device 2 and the speed reduction device 3 are the same as those in the first embodiment, and thus detailed description thereof is omitted.
When the sliding door D moves in the opening direction, the push-up link 13 attached to the link 11 is pushed up via the cam 5 and the link 11 swings, and the rack 15 rotates the pinion 42.
In this case, even if the pinion 42 rotates, the rotational power to the gear 45 is not transmitted by the action of the one-way clutch 43. For this reason, the sliding door D moves lightly and smoothly to the side to open by rewinding the rope W of the self-closing device 2.

When the sliding door is opened to a predetermined position and stopped, the sliding door D starts to close as in the first embodiment. When the sliding door D passes the position of the cam 5, the link 11 returns by the action of the kick spring 14 </ b> S, and the pinion 42 that meshes with the rack 15 attached to the tip of the link is rotated.
As the sliding door D moves in the closing direction, the ratchet gear 49 of the one-frame feed mechanism rotates through the gear 45 by the action of the one-way clutch 43. At this time, since the one-frame feed cam 50 is disposed in the ratchet gear 49, the ratchet gear 49 rotates intermittently by one tooth, that is, one frame at a time, and the speed is automatically regulated. Then, the closing force of the sliding door D is temporarily stopped until the link 11 returns.
The time during which the sliding door is stopped in the open state is until the link 11 returns to the original position. Usually, it is set to about 5 to 10 seconds.

  When the link 11 returns to the original position, the sliding door D is closed at the speed set by the self-closing device 2 as in the first embodiment.

  As mentioned above, although the temporary open state maintenance apparatus in the automatic door closing apparatus of this invention was demonstrated based on several Example, this invention is not limited to the structure described in the said Example, Each Example The configuration can be appropriately changed within a range not departing from the gist, such as appropriately combining the configurations described in 1.

  The temporary opening state maintaining device in the automatic closing device of the present invention maintains the opening state only within a preset time period that allows a person to enter and exit safely and a luggage to be taken in and out after the opening, and the set time has elapsed. After that, it has the characteristic that it can automatically close the sliding door, so it can be suitably used in facilities where automatic closing devices such as hospitals and elderly care facilities are applied, and other automatic closings. It can be widely used for door devices.

DESCRIPTION OF SYMBOLS A Temporary open state maintenance apparatus D Sliding door G Hanging guide rail 1 Opening door maintenance mechanism 11 Link 12 Stopper 13 Push-up link 14 Pulling spring 14S Kick spring 15 Rack 2 Self-closing device 3 Deceleration device 4 Gear device 4A Gear device 40 Main body case 42 Pinion 43 One-way clutch 45 Gear 46 Gear 48 Gear 49 Ratchet gear of single-frame feed mechanism 50 Single-frame feed cam 5 Cam

Claims (4)

  After the door is opened, the sliding door automatically moves in the closing direction, and in the automatic door closing device, the door is temporarily opened by a stopper that operates with a time delay on the sliding door side. A temporary open state maintaining device in an automatic closing device, wherein the open door maintaining mechanism is attached.   After the door is opened, the sliding door automatically moves in the closing direction, and in the automatic door closing device, the door is temporarily opened by a stopper that operates with a time delay on the sliding door side. The open door maintenance mechanism and a speed reducer configured to operate lightly in the opening direction of the sliding door and decelerate by a one-way clutch and a gear train in the closing direction are attached. Temporary open state maintenance device in automatic closing device.   The open door maintenance mechanism is composed of a link that swings by opening / closing operation of the sliding door, a one-way clutch that temporarily stops the operation of the sliding door in the closing direction by swinging of the link, and a gear device comprising a gear train. The temporarily opened state maintenance apparatus in the automatic door closing apparatus of Claim 1 or 2.   The open door maintenance mechanism is composed of a link that swings when the sliding door is opened and closed, and a gear device that includes a one-way clutch that temporarily stops the operation of the sliding door in the closing direction by swinging the link and a one-frame feed mechanism. The temporary opening state maintenance apparatus in the automatic closing apparatus of Claim 1 or 2 characterized by these.

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