JPH0238231B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for opening and closing a self-closing door body that is attached to an opening such as an emergency exit of a tunnel, a hotel, etc. or an entrance/exit of a hospital in a normally closed state, and a method for opening and closing the self-closing door body. This relates to opening/closing devices.

[Prior Art and Problems to be Solved by the Invention] In general, some door bodies attached to this type of opening are always in a closed position, and the door is opened manually and then automatically closed (self-closing). ). Conventionally, in such devices, a self-closing mechanism composed of a winding spring or the like is provided on the door body, and the door is opened manually, but the door is automatically closed. However, since the door body is always biased in the closing direction by the self-closing mechanism, the opening in the open state is always narrowed by the self-closing force of the door body. Therefore, if the door body is not kept open at all times, the passage of subsequent persons attempting to pass through the door will be obstructed, making it impossible to pass quickly and smoothly.

Therefore, if something like a clutch is installed to temporarily cut off the self-closing force and stop the door in the open position, the self-closing force will be insufficient if the door body is always biased in the closing direction. This is not practical because a separate complicated mechanism is required to prevent the biasing means, which is cut off and becomes free in the stored energy state, from returning to the no-load side by itself.

For this reason, a mechanism has been proposed in which the opened door body is held for a predetermined period of time by a holding mechanism, and then released to automatically close the door. It holds
Therefore, when the door opens only halfway, the holding mechanism does not work effectively, and it is not desirable to force evacuees or persons with disabilities to fully open the door. Since the door often opens only halfway, the long-awaited holding function cannot be used effectively. Furthermore, once held by the holding mechanism, the door will not close until a predetermined period of time has elapsed, so even if the evacuees finish early and want the door to close quickly, the holding mechanism will automatically release the door. There is a problem in that the holding mechanism must be released separately.

[Means for Solving the Problems] The present invention relates to an opening/closing method and an opening/closing device for a self-closing door body, which are devised in view of the above-mentioned actual circumstances and to eliminate these drawbacks. Regarding the method, when the door body moves relative to the actuation body in the door opening direction, An actuating body that is locked to the door body side, but is linked to the door body side so that it becomes free from the door body when the door body moves relative to the actuating body in the door closing direction, and follows the opening operation of the door body. The actuating wire is forcibly pulled out in conjunction with the movement of the actuating wire, while the automatic pull-back operation of the pulled-out actuating wire by the wire pull-back means is controlled by the timer time of the timer actuating means that receives the initial stage of the actuating wire being pulled out. The automatic closing operation of the door body by pulling back the actuating wire is restricted during the above-mentioned timer period by setting the wire pull-back restricting means equipped with a one-way rotation restricting mechanism to the restricting position. However, the feature is that the door can be opened and closed manually as desired.

In addition, the automatic door opening/closing device includes a wire pull-back means that forcibly pulls back the operating wire toward the closing direction of the door body, and a wire pull-back means that locks the operating body provided on the operating wire on the closing side of the door body. , when the door body moves in the opening direction, the actuation wire is forcibly pulled out,
An operating bracket provided on the door body so as to be free from the operating body during movement in the door closing direction, and a movable body connected to the wire pull-back means to receive movement in conjunction with the initial stage wire pull-out operation from the wire pull-back means. and a wire pull-back regulating means that is provided with a regulating body that regulates the wire pull-back operation by the wire pull-back means but does not regulate the wire pull-out operation. At the same time, the regulating body of the wire pullback regulating means and the timer actuating means are linked together so that the regulating body transforms into a posture for regulating the wire pullback based on the operation of the timer operating means, and during the timer period. The present invention is characterized in that the self-closing operation of the opened door by pulling back the operating wire is regulated while manual opening/closing of the door is permitted.

With this configuration, the present invention is a door body equipped with a self-closing mechanism that is always energized, but the door body can be stopped and held at any open position for a predetermined time at any time. It is designed so that it can be opened and closed manually without having to perform a holding/release operation.

[Example] The structure of the present invention will be explained based on the example shown in the drawings. 1 is a door body, and the door body 1 is fixed to the upper stile 1a of the door body 1 in this example. Hanging wheel 2
It consists of a hanging wheel type sliding door that opens and closes by running on a guide rail 3. An opening/closing device 5 incorporating a self-closing mechanism is attached to the door end side of the upper frame 4 integrated with the guide rail 3. In other words, an operating shaft 6 with one end protruding from the case 5a is rotatably attached to the case 5a that covers the opening/closing device 5, and one end of the operating wire is wound around the protruding end of the operating shaft 6. The pulled pulley 8 is fixed. A winding device 9 for the actuating wire 7, which includes a winding spring (not shown), is attached to the door end side (arrow A side) of the upper frame 4. When the actuating wire 7 is pulled out in this way, the drawn out actuating wire 7 is wound up and kept in a constant state of tension.

Reference numeral 10 denotes a pulley fixed to the operating shaft 6 within the case 5a;
A free end of a winding wire 11a extending from a winding device 11 (constituting the wire pulling means of the present invention) fixed to the inner wall of the wire is attached. The winding direction of the winding wire 11a around the pulley 10 is opposite to the winding direction of the operating wire 7 around the pulley 8, and the winding device 11 is further provided with an internal winding spring (not shown). ) is larger than that of the winding device 9, and when the rotation regulating action on the operating shaft 6, which will be described later, is released, the operating shaft 6 will be able to move the winding wire 11a to the winding device. 11, that is, the working wire 7 is forcibly rotated in the direction in which it is unwound from the winding device 9 and wound around the pulley 8.
The actuating body 12, which will be described later, is forcibly transferred in the door closing direction, and thus constitutes wire pulling back means for the actuating wire 7 in the present invention.

On the other hand, the above-mentioned actuating body 12 is fixed at an appropriate position in the middle of the actuating wire 7, and the actuating body 12 is attached to an actuating bracket 12a fixed to the upper stile 1a of the door body 1.
It is designed to abut and lock only on the door end side. When the door body 1 is opened manually, the actuating body 12 moves in the direction of the door end (in the direction of arrow A) together with the actuating wire 7 due to the movement of the actuating bracket 12a accompanying the door opening operation, and at this time, the winding The wire 11a is let out from the winding device 11 and wound around the pulley 10. On the other hand, in this state, the operating shaft 6
When the rotation restriction effect on the winding wire 1 is released, the winding wire 1
The actuating wire 7 accompanying the winding operation of the winding device 11 of 1a, in other words, the actuating body 12 in the door direction (opposite arrow A)
The actuating bracket 12a is pushed toward the door edge by the forceful movement in the direction (direction), and the door body 1 is automatically closed. In this way, the opening/closing device 5 of this embodiment includes the operating shaft 6, the operating wire 7, and the winding device 1, which together with the winding device 9 constitute a self-closing mechanism.
1. Member devices such as an operating body 12 are provided.

On the other hand, the operating shaft 6 is further provided with a pinion gear 13 and an operating gear 14. The pinion gear 13 rotates integrally with the operating shaft 6 when rotating in the door opening direction, but when rotating in the door closing direction, the pinion gear 13 rotates integrally with the operating shaft 6 when rotating in the door opening direction. The operating gear 14 rotates freely when moving in the door opening direction, and the operating gear 14 rotates integrally with the operating shaft 6 when rotating in the door opening direction.
For example, they are attached to the operating shaft 6 via boss portions 13a and 14a each containing a clutch mechanism such as a cam clutch or a roller clutch. A movable rack 15 meshes with the pinion gear 13.
As the pinion gear 13 rotates, the movable rack 15
The movable rack 15 has teeth notched at both ends. The pinion gear 13 meshes with the teeth of the movable rack 15 at appropriate positions when the door is closed, but the rotation of the pinion gear 13 accompanying the initial operation when the door is opened causes the movable rack 15 to
moves toward the door end, and when the door end side notch 15a of the movable rack 15 reaches the pinion gear 13, the pinion gear 13 idles and the movement of the movable rack 15 stops. On the other hand, when the door is closed, the pinion gear 13 is free to rotate the operating shaft 6 in the direction of closing the door, but the bullet 15b whose one end is fixed to the end on the notch 15a side of the movable rack 15 The movable rack 15 is always urged toward the return side by the urging force of the movable rack 15. Therefore, at the same time as the door closing operation starts, the pinion gear 13 moves the movable rack 1 toward the door edge side.
5, the movable rack 15 has returned to its original position.
Even if the pinion gear 13 stops in contact with the case 5a, the pinion gear 13 rotates freely with respect to the operating shaft 6 which continues to rotate, so the pinion gear 13 and the movable rack 15
There is no problem even if the two are engaged.

Reference numeral 16 denotes a timer actuating device (timer actuating means) incorporating a spiral spring or the like, and an actuating arm 17 fixed to the actuating shaft 16a of the timer actuating device 16.
An operating arm 17a is pivotally supported 17c at the bottom, and the operating arm 17 is free to rotate toward the door about a support shaft 17c by means of an arm stopper 17b fixed to the operating arm 17a. Rotation toward the door end side is restricted, and the timer actuating device 16 rotates together with the operating arm 17 about the operating shaft 16a as a fulcrum toward the door end side.
It is designed to start the process. On the other hand, a starting arm 18 is provided protruding from the end of the movable rack 15 on the door end side, and when the starting arm 18 and the movable rack 15 move together toward the door end side when the door is opened, the engine can be started. The arm 18 detects contact with the actuating arm 17a and rotates together with the actuating arm 17 toward the door end, thereby starting the timer actuating device 16. The starting arm 18 is screwed onto the movable rack 15, so that by adjusting the protruding length of the starting arm 18, the operating time of the timer operating device 16 can be freely adjusted.

Further, the operating gear 14 includes a claw gear 20 fixed to the shaft 19, a gear 19a fixed to the shaft 19,
It is interlocked and connected to the shaft 21 via fixed gears 21a and 21b in a decelerated state. On the other hand, pawl gear 2
The regulating body 22 for 0 swings up and down with the support shaft 22a as a fulcrum, but when the regulating body 22 moves downward, the regulating body 2
The claw gear 20 is prevented from rotating clockwise as shown in FIG. 3 by meshing the claw gear 20 with the claw feeding body 22b fixed to the claw gear 2, and thereby the operating shaft 6 is moved in the door closing direction. Rotation (also clockwise rotation) is now restricted. The upper edge of the actuating arm 17 is in contact with the lower edge of the distal end side of the regulating body 22 .
When the timer actuating device 16 is not activated, that is, when the actuating arm 17 is vertically erected, the regulating body 2
2 has moved upward and the engagement of the claw gear 20 of the feeding claw body 22b has been released, but the regulation body 22 has moved downward due to the fall rotation of the actuating arm 17 accompanying the door opening operation of the movable rack 15. The pawl feeding body 22b meshes with the pawl gear 20 to restrict the rotation of the pawl gear 20 in the door closing direction by the self-closing mechanism, that is, to restrict the winding of the actuating wire 7, in other words, to restrict the pullback. In this manner, the wire pullback regulating means of the present invention is constructed.

In addition, in the figure, 22c is a tension spring for the regulating body 22, 23 is a bearing for each shaft 6, 19, 21, 2
4 is a collar, and 25 is a steady rest member provided on the lower side of the door body 1.

Next, the operation of the present invention constructed as described above will be explained. First, when the door body 1 is fully closed, the movable rack 15 is located on the door edge side, and the operating arm 17 of the timer actuating device 16 stands vertically, and the pawl gear 20 and the pawl feeding body 22b are connected to each other. The mesh is released and is in an inoperative state. When an emergency situation such as a fire occurs and an evacuee opens the door 1, the actuating bracket 12a fixed to the door 1 and the actuating body 12 move together toward the end of the door. That is, when the actuating body 12 is moved in the direction of the door end by the actuating bracket 12a, the actuating wire 7
In this case, the pulley 8 rotates counterclockwise in FIG. 3 against the urging force of the winding device 11, and is forcibly pulled out from the pulley 8. The rotation of the pulley 8 also causes the pinion gear 13 to rotate, thereby moving the movable rack 15 located at the door end toward the door end. As a result, the starting arm 18 at the tip of the movable rack 15 comes into contact with the actuating arm 17a, causing the actuating arm 17 to rotate around the shaft 16a, and at the same time, the timer actuating device 16 is started, and the regulating body 22 is activated. Lower the pawl feeding body 22b to the pawl gear 2.
0, the clockwise rotation of the shaft 19 is restricted. Therefore, the actuating shaft 6 is subjected to a rotational movement in the door closing direction by the winding device 11 when the winding wire 11a is fed out from the winding device 11 when the door is opened. Claw body 22
Due to the one-way rotation restriction action of the shaft 19 caused by the meshing of the pawl gear 20 with the pawl gear 20, the rotation of the operating shaft 6 in the door closing direction is restricted for the timer time of the timer actuating device 16. During this timer time, even if the door is in a half-open state where it is only opened to a halfway position without being fully opened, the door will stop at the halfway position without being immediately subjected to the self-closing action of the winding device 11. become.

On the other hand, when an evacuee attempts to close the open door body 1, the evacuee can freely close the open door body 1. In other words, since the door body 1 opened to the arbitrary position is configured such that the actuation bracket 12a abuts and locks against the actuation body 12 from the door edge side, the door body 1 is completely unrelated to the actuation body 12 in the door closing direction. Therefore, manual closing of the door can be done at any time without the need to release the holding mechanism each time as in the past, and it can be used as an evacuation route in the event of an emergency such as a fire. By manually closing the door, it is possible to prevent smoke from entering the room at an early stage.

In addition, if the manual door closing operation is not performed, if a predetermined timer time has elapsed since the door opening operation, the door body 1 The door will close automatically. That is, in the timer actuating device 16, when a predetermined timer period elapses after the timer is started, the actuating arm 17 returns to standing up in the vertical direction to move the regulating body 22 upward, thereby causing the pawl gear 20 and the pawl feeding body 22b to move upward. release the mesh. As a result, the rotation restriction of the operating shaft 6 in the door closing direction is released, and the operating shaft 6 is rotated clockwise due to the wire winding action of the winding device 11, and the operating wire 7 is rotated clockwise.
is wound back onto the pulley 8, thereby automatically moving the operating body 12 toward the door. Therefore, the door body 1 which is open will automatically close when the actuating body 12 abuts and locks on the actuating bracket 12a.

Moreover, in this device, the wire winding regulation of the winding device 11 described above is a one-way rotation regulation of the shaft 19 due to the meshing of the claw feed body 22b and the pawl gear 20, that is, a rotation regulation in the wire winding direction. As for the feeding direction, the rotation is not restricted and is free. Therefore, when the door body 1 is opened halfway from the half-open position to the fully open direction and the actuating wire 7 is pulled in the door opening direction, the actuating wire 7 receives no regulating action from the winding mechanism 11. Since the door is pulled out without being hit, further opening operations can be performed freely after the door has stopped. As a result, the first evacuee opens the door only slightly, making it difficult for subsequent evacuees to evacuate, and further attempts to open the door are not blocked.

Then, when the timer time elapses and the regulating body 22 moves upward and the regulation is released, the winding device 11
The operating body 12 is forcibly moved in the door closing direction by the biasing force of , and the door body 1 closes automatically.
5 will return to its original state. Therefore, from then on, the door body 1 can be opened again to any position, not only after it is fully closed, but also in the middle of self-closing, and the door can be held open at that position again for the timer period. .

It goes without saying that the present invention is not only used as an evacuation door, but can also be installed in any opening as required.

It should be noted that the present invention is of course not limited to the above-mentioned embodiments, and may be implemented as each of the embodiments described below.

In other words, in the first embodiment, the pulling back of the operating wire 7 is not controlled by any electrical drive, so the advantage is that the opening/closing action described above can be performed regardless of power outages, battery consumption, etc. However, electrical wire pullback regulation may also be used. Various methods can be used for this purpose, such as one using an electromagnetic brake 26 as in the second embodiment shown in FIG. 4, or one using a solenoid mechanism 27 as in the third embodiment shown in FIG. Here, in the former case, the door opening rotation (fourth
One half of the electromagnetic brake 26 is connected to the electromagnetic brake 26 via a one-way rotating clutch (for example, a roller clutch) so that it is allowed to rotate freely when the door is rotated (counterclockwise in FIG. 26a is installed, and when the limit switch 28 is closed by the initial operation of the door body 1, the other half 26b of the electromagnetic brake 26 provided on the door frame side and the above-mentioned one half 26a come into pressure contact, the brake works, and the operating shaft The rotation of the door 6 in the door closing direction is restricted, and only the rotation in the door opening direction is allowed. By doing this, the door body 1 stops at an arbitrary opening position, and can be further manually opened/closed at this stopped position, and after a predetermined timer period has elapsed, the timer activation device 29 is activated. When the power to the electromagnetic brake 26 is cut off, the brake is released and the door body 1 closes itself. In addition, in such a case,
An electromagnetic clutch may be used instead of the electromagnetic brake 26. In this case, as in the case of the electromagnetic brake 26, the clutch, which is separated when the door is closed, may be engaged when the door is opened. When this occurs, the clutch may be disengaged, and the clutch may be engaged again in time for the automatic door closing time.

Further, in the third embodiment shown in FIG. 5, the pawl gear 30 is rotatable in one direction relative to the operating shaft 6 so as to freely rotate relative to the opening rotation of the operating shaft 6. When the limit switch 28 is closed when the door is installed and the door is opened, the solenoid mechanism 27 provided on the pawl feeding body 30a is activated, and the pawl feeding body 30a is engaged with the pawl gear 30, thereby allowing the pawl feeding body 30a to be opened to an arbitrary position. The closing rotation of the operating shaft 6 when the door is closed is restricted, and after a predetermined period of time, the solenoid mechanism 27 is deactivated by a command from the timer actuating device 29, and the engagement of the pawl feed body 30a with the pawl gear 30 is prevented. It is designed to self-close when released. In this case as well, as in the case of using an electromagnetic clutch, the pawl feed body 30a is always engaged with the pawl gear 30, and the solenoid mechanism 2
Of course, the engagement of the pawl feeding body 30a with the pawl gear 30 may be released at step 7.
Note that 30b is a return bullet.

As described above, in the present invention, even if the door closing rotation of the actuating shaft 6 is restricted when the door is opened to an arbitrary position, that is, the pulling back of the actuating wire 7 is restricted electrically, It may be performed by a mechanical device that does not use electricity, and in the case of a device that does not use electricity, in addition to the above embodiment, for example, the solenoid mechanism 27 described above may be used.
Instead, as shown in FIG. 6, the claw feeding body 30a may be vertically swung by the actuating arm 17 of the timer actuating device 16.

On the other hand, in each of the embodiments described above, the free end of the actuating wire 7 is connected to the winding device 9, so it is ensured that the actuating wire 7 paid out from the pulley 8 is always under tension and does not droop. However, the seventh
An actuation chain 31 may be used instead of the actuation wire 7 as in the fourth embodiment shown in the figure. In this case, the operating chain 31 may extend and sag due to long-term use, but there will be no problem if something such as a tight pulley is provided to prevent sagging.

Furthermore, in the above embodiment, the movable rack 15
A notch 15a is provided on the side of the door end, and the notch 15
Since the pinion gear 13 is made to idle when the pinion a reaches the position of the pinion gear 13, there is no need to make the movable rack 15 long, and there is an advantage that the entire device can be made compact. Moreover, since the movable rack 15 is pulled by the bullet 15b when the door is closed, the meshing of the movable rack 15 with the pinion gear 13 is ensured. In addition, the pinion gear 13
The movable rack 15 is integrally rotated in the door opening direction with respect to the operating shaft 6, but is freely rotated in the door closing direction. The bottom end of the door comes into contact with the case 5a before the door is completely closed, but the operating shaft 6
Even if the door rotates to close, the pinion gear 13 remains as it is and only the operating shaft 6 rotates, so there is no problem. When such a short movable rack is used, a special boss portion 13a is used considering that the pinion gear 13 and movable rack 15 are engaged when the door is closed. For example, a notch may be provided on the door end side so that the pinion gear 13 can idle relative to the movable rack 15 when the movable rack 15 returns. In this case, it is preferable to interpose a spring between the case 5a and the movable rack 15 so that the movable rack 15 always meshes with the pinion gear 13 when the door is opened.

Although the return of the movable rack 15 was carried out using the ammunition machine 15b in the above embodiment, it can also be carried out without using the ammunition machine, as in the embodiments shown in FIGS. 8 and 9, respectively. can.
That is, in the sixth embodiment shown in FIG. 8, in addition to the pinion gear 13, another auxiliary pinion gear 32 is provided on the operating shaft 6, and in the opposite direction to the pinion gear 13, the operating shaft 6 is rotated to close the door. It is attached via a boss portion 32a which is equipped with a one-way rotating clutch that rotates together. Further, a sub-movable rack 33 corresponding to the sub-pinion gear 32 is integrally fixed to the movable rack 15, but the sub-movable rack 33 has a notched tooth on the door end side, so that the movable rack 15 is the closest to the door. When the door is closed and moved to the forward side, this notch 33a is located at the sub pinion gear 32 position. When the operating shaft 6 rotates as the door opens, the notch 15 of the movable rack 15
a is located at the pinion gear 13 position and the pinion gear 13 is spinning idly, and the auxiliary pinion gear 3
2 meshes with the auxiliary movable rack 33. In this case, since the auxiliary pinion gear 32 is free to rotate the operating shaft 6 in the door opening direction, there is no problem even if the operating shaft 6 further rotates to open the door. On the other hand, when the door closes,
The operating shaft 6 and the auxiliary pinion gear 32 rotate together,
In order to transfer the auxiliary movable rack 33 to the door side, the movable rack 15 returns to the door side without providing a bomb as in the previous embodiment. When returning, the auxiliary pinion gear 32 idles in the notch 33a of the auxiliary movable rack 33, so there is no problem even if the operating shaft 6 further rotates to close the door.

On the other hand, in the seventh embodiment shown in FIG. 9, a single movable rack 15 is used without providing the sub movable rack 33 as in the above embodiment. That is, a spur gear 34 is attached to the operating shaft 6 via a boss portion 34a that includes a one-way rotating clutch similar to the auxiliary pinion gear 32, and the spur gear 34
A wide spur gear 3 that also meshes with the movable rack 15
5 through an intermediate gear 36. When the door is closed, the pinion gear 13 that freely rotates with respect to the operating shaft 6 is engaged with the movable rack 15, but the spur gear 3 that rotates integrally with the operating shaft 6 is in mesh with the movable rack 15.
5 is a notch 15 provided on the door end side of the movable rack 15.
When the door is opened, the pinion gear 13, which rotates integrally with the operating shaft 6, is located at the notch 15a provided on the front side of the movable rack 15 and rotates idly, but when the door is opened, it is not activated. A spur gear 35, which freely rotates about the shaft 6, is meshed with the movable rack 15. In this case as well, the movable rack 1
5 moves in response to the opening/closing operation of the door body 1 without using a bomb. In this way, the movement of the movable rack 15 can be performed by various mechanisms, and in short, these mechanisms are used to move the movable rack 15 for mechanically starting the timer actuating device.
Therefore, it is not necessarily necessary to use the electric type as described above, and the timer activation device may be configured to start when the limit switch is closed. It is also possible to have a structure in which the rack 15 is not necessary.

Furthermore, although the timer actuating device 16 is started by the starting arm 18, it may be started by a movable rack and pinion system as in the eighth embodiment shown in FIG. That is, in this case, a pinion gear 37 is attached to the shaft 16a of the timer actuating device 16 via a boss portion 37a, which is equipped with a one-way rotating clutch that is free for rotation in the door closing direction, and the pinion gear 37 is attached to the shaft 16a of the timer actuating device 16 via a boss portion 37a, which is free for rotation in the door closing direction. The movement of the rack 15 toward the door end may rotate the pinion gear 37 to start the timer, and the raised regulating body 22 may be moved downward to regulate the rotation of the operating shaft 6 to close the door. .
In this way, in the above-mentioned embodiment, the starting arm 18 that moved closer to the door than the operating arm 17 after starting the timer becomes the operating arm 17 (strictly speaking, the operating arm 17a).
the actuating arm 17 so as not to interfere with return due to
, the actuating arm 17 with the arm stopper 17b
a must be provided, but such consideration is completely unnecessary.

Furthermore, contrary to the pinion gear 13, the operating gear 14 is configured to rotate freely with respect to the operating shaft 6 when rotating in the door opening direction, and rotate integrally with the operating shaft 6 when rotating in the door closing direction. Since the operating gear 14 does not rotate even though the operating shaft 6 rotates,
The shaft 19 also does not rotate, and therefore, there is no meshing transition between the pawl gear 20 and the pawl feeding body 22b during the door opening operation, eliminating the generation of clicking noise and allowing quiet door opening.

Furthermore, although the winding device 11 is equipped with a spiral spring, the present invention is not limited to this, and the winding device 11 is not limited to this. A string 39 to which a cone 38 is attached.
The door body 1 is attached to the normally closed side, such as one in which the upper end side is wrapped so that the door body 1 automatically closes due to its own weight due to the cone 38 when the restriction on the closing rotation of the operating shaft 6 is released. Various materials can be used as long as they are effective.

Furthermore, in each of the above-mentioned embodiments, the timer starts when the door is first opened, but in the tenth embodiment shown in FIG. 12, the timer starts when the door is opened most recently. It is also designed to have useful effects.
That is, a boss portion 4 with a one-way rotating clutch is attached to the operating shaft 6 so as to rotate integrally with the door opening rotation of the operating shaft 6.
A gear 40 is attached to the shaft 16a of the timer actuating device 16 through a safety clutch 41, which rotates idly when the load exceeds a predetermined value. Both gears 40 and 42 are interlocked and connected via an intermediate gear 43.
3 is located below the imaginary line connecting the axes of both gears 40 and 42. Shaft 43a of intermediate gear 43
A long arc-shaped hole 43c centered on the axis of the actuating shaft 6 is bored in the bearing 43b that supports the actuating shaft 6. The gear 42 also has a notch 42b in which a tooth is notched.
is formed. In this embodiment configured in this way, when the gear 40 rotates counterclockwise when the door body 1 is opened, the intermediate gear 4 meshing with the gear 40 rotates counterclockwise.
3 moves upward through the elongated hole 43c while rotating clockwise and meshes with the gear 42, causing the gear 42 to rotate counterclockwise and starting the timer.
When the notch 42b of the gear 42 reaches the intermediate gear 43 position, the meshing of both gears 42 and 43 is released. When the opening of the door body 1 is stopped, the intermediate gear 43 is guided by the elongated hole 43c and falls downward.
Therefore, in this state, the gear 42 sequentially rotates clockwise due to the timer operation, and even if the teeth of the gear 42 correspond to the intermediate gear 43, the intermediate gear 43 does not mesh with the gear 42. For this reason, the operating shaft 6
Even if the timer shaft 16a and the timer shaft 16a are gear-connected, they can be completely unrelated when the timer is activated, and the operating gear 40 is not affected by the return rotation of the gear 42 accompanying the timer operation. do not have. On the other hand, when the door body 1 is further opened when the timer is activated, the intermediate gear 43 rises again as the gear 40 rotates, meshes with the gear 42, and winds up the timer actuating device 16. The timer is started from. In this case,
There is a risk that the timer actuating device 16 will be wound too much for more than the set time due to rewinding and be damaged, but in that case, the safety clutch 41 will be overloaded due to further rotation restriction of the shaft 16a. Since the gear 42 side rotates idly, there is no chance of damage.

Note that the door body 1 of the present invention may be not only a hanging wheel type sliding door, but also a door wheel type sliding door, or even a hinged door type.

[Operation and Effect] In summary, since the present invention is constructed as described above, when the door body is operated to open,
The actuating wire that is urged toward the door closing side is forcibly pulled out by the wire pull-back means, but based on the initial stage of the pull-out operation of the actuating wire, the wire pull-back restricting means is unidirectionally restricted during the timer period. This action restricts the wire pullback operation by the wire pullback means. As a result, the door body is stopped and held at the arbitrary door opening position during the timer period, even if it is in the middle of the temporary opening position.

Moreover, when the door body is held stopped as described above, when an attempt is made to manually open or close the door body, the manual operation in the direction of closing the door will result in only the door body being pulled out and not being followed by the actuating wire and the actuating body. It can be moved independently, and the manual operation in the door opening direction is not restricted by the wire pullback restriction means, and the operating wire is pulled out.
Manual opening and closing operations in either direction can be performed freely.

As a result, unlike when using a conventional holding mechanism, the door will not be held unless it is fully opened. This means that the door can be kept open temporarily. Moreover, in this state where the door is held open, the door can be opened and closed manually, eliminating the need for cumbersome operations such as releasing the holding mechanism, and allowing the door to be opened and closed in the same way as a normal door. .

[Brief explanation of drawings]

The drawings show an embodiment of the method for opening and closing a self-closing door body and an opening/closing device according to the present invention, and FIG. 1 is an overall front view of the first embodiment, and FIG. 2 is an overall horizontal cross-section of the opening/closing device. Figure 3 is a vertical cross-sectional view of the same as above, Figures 4A, B, and C are a plan view of the main part showing the second embodiment, a front view of the main part, and a circuit diagram, and Fig. 5 is a main part showing the third embodiment. Part plan view, main part front view, circuit diagram, Fig. 6 is a main part front view showing the fourth embodiment, Fig. 7 is a main part front view showing the fifth embodiment, Fig. 8 A, B, C 9A, B, and C are plan views of the main parts showing the seventh embodiment, explanatory diagrams of the action when the door is closed, and illustrations of the action when the door is open. Fig. 10 A, B, and C are plan views of the main parts showing the eighth embodiment; Fig. 11 is a diagram explaining the action when the door is closed; Fig. 11 is a diagram explaining the action when the door is opened; 12A, B, C, and D are plan views of essential parts showing the tenth embodiment, an explanatory diagram of the action when the door is closed, an explanatory diagram of the action when the door is opened, It is an explanatory diagram of the action when the door is opened. In the figure, 1 is the door body, 2 is the hanging wheel, 3 is the guide rail,
4 is an upper frame, 5 is an opening/closing device, 6 is an operating shaft, 7 is an operating wire, 8 is a pulley, 9 is a winding device, 10 is a pulley, 11 is a winding device, 12 is an operating body, 12a is an operating bracket, 13 is a pinion gear, 14 is an operating gear, 15 is a movable rack, 16 is a timer operating device, 17 is an operating arm, 17a is an operating arm, 18 is a starting shaft, 19 is a shaft, 20 is a pawl gear, 21 is a shaft, 2
2 is a regulator, 22a is a support shaft, 22b is a feeder, 2
3 is a bearing, 24 is a collar, 25 is a steady rest member, 26 is an electromagnetic brake, 27 is a solenoid mechanism, 28 is a millimeter switch, 29 is a timer operating device, 30 is a pawl gear, 30a is a pawl feeding body, 31 is an operating chain , 32 is an auxiliary pinion gear, 33 is an auxiliary movable rack, 34, 35 are spur gears, 36 is an intermediate gear, 37 is a pinion gear, 38 is a cone, 39 is a string, 40 is a gear, 41 is a safety clutch, 42 42a is a notch, 43 is an intermediate gear, 43a is a shaft, 43b is a bearing, and 43c is a long hole.

Claims (1)

[Scope of Claims] 1. An actuating body provided on an actuating wire pulled out from a wire pull-back means that urges the door body to pull back in the closing direction, the door body moves relative to the actuating body in the door opening direction. If the door body moves relative to the operating body in the door closing direction, it is linked to the door body side so that it can be freed from the door body and follows the opening operation of the door body. The actuating wire is forcibly pulled out in conjunction with the movement of the actuating body, and the automatic pull-back operation of the pulled-out actuating wire by the wire pull-back means is controlled by the timer actuating means that receives the initial pull-out operation of the actuating wire. By operating during the timer time, the wire pullback regulating means equipped with a one-way rotation regulating mechanism is placed in a regulating position, thereby regulating the automatic closing of the door body by pulling back the operating wire during the timer time. A method for opening and closing a self-closing door body, characterized in that the operation is regulated, but the door body can be opened and closed at will by manual operation. 2. A wire pull-back means for forcibly pulling back the actuating wire in the closing direction of the door body, and a wire pulling means that locks the actuating body provided on the actuating wire on the closing side of the door body to move the door body in the opening direction. In this case, the actuating wire is forcibly pulled out, but an actuating bracket provided on the door body so that it is free from the actuating body when moving in the door closing direction, and an actuating bracket connected to the wire pulling back means, and an initial stage wire pulling out operation from the wire pulling back means. a timer activation means that operates during the timer time started in response to the movement of the movable body in conjunction with the movement of the movable body, and a regulating body that regulates the wire pulling-back operation by the wire pulling-back means, but does not restrict the wire-pulling operation. and a wire pullback regulating means provided therein, and further linking the regulating body of the wire pulling back regulating means and the timer operating means so that the regulating body transforms into a posture for regulating wire pullback based on the operation of the timer operating means. At least during the timer period, the self-closing operation of the opened door by pulling back the operating wire is regulated while manual opening/closing of the door is permitted. Automatic door opening/closing device.