JPH1150769A - Switching device for motor-driven switching door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a motor-driven switching door from being forcibly wound and causing noises or colliding against a frame by providing a clutch means between the electric motor and winding drum of the door, providing the winding drum with a balance spring whose energy in an opening direction is stored as the door is operated for closing, and causing the door to be automatically opened or closed by the release of the clutch. SOLUTION: A first clutch 11 connected to an electric motor is provided with a brake member 14, and an oil retaining groove 14a retaining grease 15 is formed in the outer peripheral surface of the brake member 14. The brake member 14 is fitted into a casing 10 which rotates integral with a winding drum, and the grease 15 supplied between the outer peripheral surface of the brake member 14 and the inner peripheral surface of the casing 10 produces sliding resistance between them.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a motor-operated door opening / closing device provided at an opening such as a window or an entrance of a house.

[0002]

2. Description of the Related Art Generally, in such an electric door, a door is connected to a winding means such as a winding drum, and the winding means is rotated forward and reverse based on driving of an electric motor. The body (shutter curtain) is opened and closed. In such a device, the electric motor and the wrapping means are provided so that the door can be manually opened and closed even when the electric motor is inoperative due to a power failure, an electric motor, or a failure in the opening and closing control circuit. In some cases, a clutch means is provided in the power transmission path between the two. In this case, even if the clutch means is simply disengaged, the door body does not move, and a manual opening / closing operation is required. However, in some cases where the clutch means is disengaged, there is a case where an emergency escape such as opening a fully closed door body in an emergency such as a fire occurs.
If the door is closed and does not move even if the clutch is disengaged, forgetting to manually open the door, the evacuee psychology that this door will not open will work and get involved in a disaster It is possible that. For this reason, as shown in JP-A-3-180686,
The winding drum is provided with an energy storage device that stores energy in the direction of opening the shutter curtain, and the shutter curtain in the fully closed state is stored by the storage force of the energy storage device in accordance with disengaging the clutch means. An emergency automatic opening has been proposed.

[0003]

In the case of the above-mentioned publication, the take-up drum in which the clutch means is disengaged to be in a free state opens the shutter curtain. By the way, since the accumulating force is maximum when the shutter is fully closed, the shutter curtain receives a large accumulating force at first and performs a violent opening operation. In such a case, there is a problem that the seat plate violently hits the magsa to induce further noise and damage these members. In addition, if the shutter curtain is constructed by interlocking a plurality of slats, the interlock will be deformed due to the load applied to the interlock when the shutter is opened by receiving a large initial energy as described above. There is a problem that it may be damaged or damaged, and if it receives a large accumulating force at the beginning of opening, the opening speed will accelerate and the so-called backlash phenomenon that exceeds the winding speed of the winding drum will occur. In this case, there is a problem that the winding posture of the shutter curtain is distorted due to looseness or deviation, and there is also a problem to be solved by the present invention.

[0004]

SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, the present invention has been made with the object of solving these problems. In an electric opening / closing door configured to rotate to open and close a door body, a clutch means for intermittently transmitting power from the electric motor to the winding means, and the power is stored in the door body opening direction and is fully closed. Energy storage means for urgently opening the door in the state when the clutch means is disengaged, and deceleration means for decelerating by giving resistance to the urgent opening of the door receiving the energy stored by the energy storage means Are provided. By doing so, the emergency opening of the door body is performed in a decelerated state, so that the winding posture is not disturbed, and it is possible to prevent noise due to collision of members and damage to the members.
In this device, the urging force of the energy storage means of the present invention can be set to open the door to a half-open state, and in this way, the door is urgently opened to a half-open state, It is possible to prevent generation of noise and damage of members due to collision of comrades. Further, in this device, the clutch means includes a first clutch body interlockingly connected to the electric motor, a second clutch body detachably engaged with the first clutch body, and a free rotation of the first clutch body. And a clutch casing internally provided with these clutch bodies so as to rotate integrally with the second clutch body, and further provided with a clutch casing connected to the winding means so as to rotate integrally therewith. It can be constituted by a sliding resistance portion that gives resistance to relative rotation between the body and the clutch casing.

[0005]

FIG. 1 shows an embodiment of the present invention.
Explanation will be made based on the drawings of FIG. In the drawings, reference numeral 1 denotes a window sash attached to an opening of a house. The window sash 1 includes an aluminum window frame member 1a and a pair of right and left windows formed by a glass plate surrounded by an aluminum frame. Glass door 1
and b. And window sash 1
Is set so that the shutter curtain 2 of the window shutter, which is an electric door that implements the present invention, is opened and closed on the outdoor side. The shutter curtain 2 is provided on the skeleton side above the opening. The winding device 4 is wound around a winding device (winding means) 4 which is rotatably supported in the winding device 3. The winding device 4 is rotated based on the driving force of the electric motor 5 to wind and unwind. The opening and closing operation is performed between an opening position for opening the opening and a closing position for closing the opening, and all of these basic configurations are set to conventional ones. On the other hand, reference numeral 6 denotes a pair of left and right base frames which are attached in a state of protruding outward from both side portions of the frame opening, and a guide rail portion 7 is integrally attached to an outwardly projecting end of the base frame 6, The guide rail 7 guides the movement of the left and right edges of the shutter curtain 2.

[0006] A base end of a cylindrical pipe-shaped fixed shaft 4a constituting the winding device 4 is integrally supported on one of the left and right side plates 3a of the shutter case 3, and the other side plate 3b. The base end of the electric motor 5 is integrally supported with the output shaft 5a coaxial with the fixed shaft 4a, and the distal end of the fixed shaft 4a and the distal end of the electric motor 5 face each other. It is arranged in. And the fixed shaft 4a
A pipe support 4b is provided at the base end and the tip end of the pipe support 4b so as to be rotatable forward and backward, respectively. An inner circumference of a winding drum 4c on which the shutter curtain 2 is wound is integrally connected to an outer circumference of the pipe support 4b. Thereby, the winding drum 4c is rotatably disposed with respect to the shutter case side plates 3a, 3b.
The other end is extended to the base end of the electric motor 5 so as to fit the electric motor 5 therein. On the other hand, reference numeral 8 denotes a balance armature (energy accumulator). One end of the balance armature 8 is fixed to the fixed shaft 4a, and the other end is fixed to the pipe support 4b on the tip side of the fixed shaft 4a. Take drum 4
The setting is made such that the energy is accumulated as c rotates in the closing direction of the shutter curtain 2. In the balance armature 8 of the present embodiment, the shutter curtain 2 is in a half-open state (halfway open state) with the shutter curtain 2 fully closed.
It is set to be a force that naturally opens up to you.
Here, the electric motor 5 is unitized as a switchgear provided with a power control device such as a speed reducer and a brake device as necessary, and is controlled by each device from the motor output shaft 5a. It is set to output the driving force.

The output shaft 5a of the electric motor 5
Protrudes toward the fixed shaft 4a via the adapter 5b, and the output shaft 5a and the winding drum 4c
And a clutch means 9 for transmitting the power so as to be able to freely switch between ON and OFF. Here, the clutch means 9 includes first and second clutch bodies 11 and 12 on a cylindrical casing 10.
A biasing press 13 for biasing the second clutch body 12 toward the first clutch body 11 is provided adjacent to the first clutch body 11 in the axial direction. That is, the output shaft 5a is fitted into the first clutch body 11 located on the side of the electric motor 5 in a detent shape so as to rotate integrally (for example, key fitting, spline fitting, chamfer fitting, etc.). A drive-side shaft portion 11a;
An engagement portion 11c is formed, which has a diameter larger than a and protrudes three engagement protrusions 11b toward the second clutch body 12 in the axial direction. Further, a braking member 14 constituting the deceleration means of the present invention is fitted around the outer periphery of the driving side shaft portion 11b in a state of being integrally rotated around the axis. A plurality of ring-shaped oil sump grooves 14a for accumulating an oil / fat material 15 described later are formed. On the other hand, the second clutch body 12 is formed with a base 12a having an outer diameter substantially similar to that of the first clutch body engaging portion 11c, and the base 12a has a first clutch body side engaging projection 11b. Three engaging projections 12 protruding so as to be freely engaged and disengaged in a state of inconsistency.
b is formed. Further, the large-diameter convex ridges 1 extend from the outer periphery of the engaging projections 12b to the outer periphery of the base 12a.
2c is formed, and the fixed shaft 4a of the base 12a is formed.
On the side, a concave hole 12 into which one end of the biasing bullet 13 is fitted.
d is formed.

On the other hand, on the outer peripheral surface of the casing 10, an engagement ridge 10a long in the axial direction is formed.
0a is an engaging groove 4 formed on the inner peripheral surface of the winding drum 4c.
By engaging with d, the casing 10 is set to rotate integrally with the winding drum 4c. The casing 10 is divided into two chambers by a partition wall 10b protruding toward the inner diameter in a state where the shaft center portion is communicated with each other. One of the clutch chambers 10c is provided with the first clutch body engaging portion 11c. , A second clutch body 12, and a biasing ammunition 13 are housed therein, and the braking member 14 in which the driving side shaft portion 11a is fitted in a detent shape is provided in a deceleration chamber 10d which is the other chamber in an axial direction. It is slidably fitted inside. The braking member 14 and the casing 10 are connected to the braking member 14
Are set to rotate relative to each other in a state in which sliding resistance (viscous resistance) is given by the oil or fat material 15 supplied between the outer peripheral surface of the deceleration chamber 10d and the inner peripheral surface of the deceleration chamber 10d. Incidentally, the movement of the first clutch body 11 toward the electric motor 5 is restricted by the stepped surface between the engaging portion 11c and the drive-side shaft portion 11a abutting on the partition wall 10b. The movement is restricted by contacting a closing plate 10e provided to close the opening end of the deceleration chamber 10d.

On the other hand, the second clutch body 12 is formed such that the ridge 12c on the outer peripheral surface is engaged with the engaging concave portion 10f formed on the inner peripheral surface of the clutch chamber 10c, so that the second clutch body 12 is rotated in the axial direction with respect to the clutch chamber 10c. And is integrally rotated with the casing 10, but is set so as to be free to move in the axial direction. Further, the urging bullet 13 is disposed between the second clutch body concave hole 12d and a closing plate 10g provided to close the opening end of the clutch chamber 10c of the casing 10, and the second clutch body 12 is disposed. It is urged toward the side engaged with the first clutch body 11. Reference numeral 16 denotes a release rod that penetrates a through hole 12e formed in a shaft core of the second clutch body 12, and a distal end portion 16a of the release rod 16 rotates the release rod 16 relative to the second clutch body 12. It is set so as not to be disturbed and bent out of the through hole 12e.

Thus, in the normal state in which the shutter curtain 2 is performing opening and closing operations based on the driving force of the electric motor 5, the clutch means 9 is provided with the first and second engaging projections 11b, 1b.
2b are engaged with each other while receiving the urging force of the urging bullet 13, and the clutch is engaged, and the driving force from the motor output shaft 5a is transmitted by the first clutch 11 and the second clutch 1
2. Power is transmitted to the winding drum 4c via the casing 10. On the other hand, when the release rod 16 is pulled against the urging bullet 13 to bring the first and second engagement projections 11b and 12b into engagement with each other, the clutch is disconnected. The two-clutch body 12 is free from the first clutch body 11 and the electric motor output shaft 5
The power transmission state with the a side is released, and free rotation of the second clutch body 12 is permitted regardless of the electric motor 5, whereby the rotation of the casing 10 and the winding drum 4c is set to be free. ing. In this clutch disengaged state, if the shutter curtain 2 is in the fully closed state, an attempt is made to automatically open by receiving the accumulating force of the balance elastic machine 8. Picking drum 4c side (second clutch body 12 side)
Is connected to the braking member 14 with respect to the fixed electric motor 5 side.
The winding operation is performed in a state where the sliding resistance acts between the motor and the deceleration chamber 10d, so that the rotation speed is set to be reduced.

On the other hand, the release rod 16 is connected to a second release rod 17 via a joint plate 16b, and the second release rod 17 is moved from inside the cylinder of the fixed shaft 4a to one side plate 3a side of the shutter case 3. The side plate 3a is pulled out and connected to the inner wire 18a. The inner wire 18a pulled out from the side plate 3a is set as a wire member 18 covered by the outer wire 18b so as to be drawn into the left or right guide rail portion 7. That is, the guide rail portion 7 includes a pair of front and rear guide surface portions 7a facing left and right so as to fit and guide both side edges of the shutter curtain 2, and a pair of bent portions formed to be attached to the base frame 6 from these guide surface portions 7a. The wire member 18 is inserted from the upper side of the gap S formed between the mounting sides 7b. The distal end of the wire member 18 is incorporated into the gap S through a mounting hole 7c formed by cutting out an appropriate portion of the mounting side 7b on the inner side (opening side) of the one guide rail 7 in the left-right direction. It is connected to the release operation tool 19.

The release operation tool 19 is a case body 20.
The outer half of the case body 20 in the left-right direction is inserted into the gap S, and the upper and lower sides 20a, 20b of the case body 20 are provided.
Are fixed to the guide rail portion mounting side 7b by using screws 7d, but the inner side 20d of the case body 20 is fixed to the mounting side in this assembled state. 7b so as to protrude inward and become substantially parallel to the guide portion 7a.
Reference numeral 9 is provided on the guide rail portion 7 which is easy to operate immediately after the window sash 1 is opened, so that it can be easily operated even in an emergency in an emergency.

Reference numeral 21 denotes a release lever arranged along the inner side edge 20d of the case body. The release lever 21 is rotatably supported by a pin shaft 20e whose intermediate portion is supported by the front and rear sides of the case body 20. And the lever operating section 21 on the distal end side.
By swinging a about 180 degrees downward with the pin shaft 20e as a fulcrum, the lever operating portion 21a swings from the normal position at the upper position to the release position at the lower position. Here, the case body inner side 20d has a concave portion 20f formed inside the case body 20, and is set so as to be easily operated when gripping the lever operation portion 21a. On the other hand, reference numeral 22 denotes a slide arm, and the lower end of the slide arm 22 is provided with a pin shaft 20e of the release lever 21.
, And is supported by a base 21b located closer to the base end side than the shaft supporting portion, and receives upward swing of the base 21b accompanying downward swing of the lever operating portion 21a, and the bearing 22 with the base 21b.
“a” is set so as to perform upward swinging around a circular arc having the pin shaft 20e as a fulcrum. The upper end of the slide arm 22 is connected to the end of the case 20 of the inner wire 18a connected to the release rod 16, and the direction of the inner wire 18a is changed by the pulley 20g. . Further, the slide arm 22 receives a biasing force from the outside to the inside by the spring 23, and thereby the release lever base 21b
Swinging of the slide arm 22 due to the inward and outward displacement of the bearing portion 22a of the slide arm 22 and the connecting portion with the inner wire 18a is restricted, and the release lever 21 swings. The slide arm 22 is configured to slide upward without swinging outward.

When the release lever 21 is in the normal posture and the slide arm 22 is located at the lower position, the inner wire 18a is adjusted so as to pull the clutch means 9 into the clutch engaged state. When the slide arm 22 is slid upward by swinging downward, the inner wire 18a is moved to the second clutch body 12 via the second release rod 17 and the release rod 16.
Is released from the engagement with the first clutch body 11, and the clutch means 9 is switched to the above-mentioned clutch disengaged state. Here, the sliding operation of the slide arm 22 based on the operation of the release lever 21 involves exceeding the fulcrum of the spring 23 by the movement of the bearing 22a in an arc shape.
The release lever 21 is urged to hold either the normal posture or the release posture of the release lever 21.
Consideration has been given to the dual use of the posture holding member.

The slide arm 22 is provided with an adjusting device 24 for finely adjusting the length of the inner wire 18a, thereby coping with the temporal change of the release rods 16, 17 and the wire member 18. Consideration is given so that the adjustment can be performed in a place where the guide rail portion 7 can be easily operated. That is, the adjusting device 24 includes a nut 24 a fixed to the slide arm 22 side,
a screw 24b screwed into the nut 24a.
Is set so that the length of the inner wire 18a can be adjusted by adjusting the screwing of the inner wire 18a. On the other hand, the screw 2 of the slide arm 22 when the release lever 21 is in the release position is provided on the inner side 20d of the case constituting the release operation tool 19.
A through hole 20h is formed opposite to the hole 4b so that a screw can be adjusted by inserting a tool through the through hole 20h. Further, in fixing the case body 20 to the guide rail portion 7, the upper and lower screwing spans are set in the same manner as the screwing span performed when the guide rail portion 7 is attached to the base frame 6.

In the embodiment of the present invention constructed as described above, the shutter curtain 2 is driven in normal and reverse directions by the electric motor 5 based on the operation of an operation switch (not shown) in a normal use state without a power failure or the like. The opening / closing operation is performed, but when it is desired to perform an emergency opening due to a power failure or an emergency, as described above, the operation lever 21 of the release operation tool 19 provided near the guide rail portion 7 is lowered 180 degrees from the upper position. When the clutch means 9 is disengaged by swinging, the winding drum 4c becomes free from the electric motor 5 side, and in this state, receives the urging force of the balance elastic machine 8 mounted on the winding drum 4c. The take-up drum 4c takes up the shutter curtain 2 and automatically opens it. In this case, the winding drum 4 receives the sliding resistance between the casing 10 on the rotating side and the braking member 14 on the fixed side.
In c, the winding speed is reduced. As a result, the clutch means 9 is in the clutch disengaged state, and the rotation of the winding drum 4c which is to be instantaneously released by receiving the initial large urging force of the balance elastic machine 8 is decelerated, without causing large noise. It is not permitted that the shutter curtain 2 can be opened, and the occurrence of a backlash phenomenon caused by vigorously opening can be prevented, so that the winding posture of the shutter curtain 2 is not disturbed.

Further, in this case, since the balance elastic machine 8 is balanced with the urging force for bringing the shutter curtain 2 into the half-open state, even if the shutter means 2 is automatically released with the clutch means 9 in the clutch disengaged state, the shutter curtain is not opened. (2) The lowermost seat plate is prevented from contacting the magsa above the opening of the skeleton, and these members are not damaged. And in this case,
Since the urging force of the balance elastic machine 8 is balanced to be smaller than the own weight of the shutter curtain 2, the electric motor 5 is used to open and close the shutter curtain 2.
Is driven in a state in which the shortage is compensated for, and the biasing force of the balance armature 8 is balanced to a force larger than the own weight of the shutter curtain 2 so that the motor is driven in the opposite direction to the opening / closing operation. Thus, the load on the electric motor 5 can be reduced.

Furthermore, in this case, since the release operation tool 19 for switching the clutch means 9 on and off can maintain the clutch disengagement and connection states as described above, the clutch disengagement state is maintained during the power failure. Switching can be performed, and manual operation can be performed during this time. Further, when the clutch is switched from the disengaged state to the continuous state, since the second clutch body 12 is urged toward the first clutch body 11, the electric motor 5 starts driving and the first clutch body 11 rotates. Thus, the first and second clutch bodies 11 and 12 can be automatically engaged with each other to return to the clutch continuous state, and the operability is excellent.

The present invention is, of course, not limited to the above embodiment. In the above embodiment, the speed reducing means is provided between the first clutch body and the casing constituting the clutch means. The means can be provided in an appropriate power electric path, such as between the first clutch body and the second clutch body, between the first clutch body and the winding drum. Further, in the above-described embodiment, the balance elasticity is used as the energy storage means for automatically opening the shutter curtain in the fully closed state. At the time of normal opening and closing operation in the continuous state, it does not exert the accumulating force in the winding direction,
It may be configured such that the clutch means is charged in the winding direction in conjunction with the power-off state of the clutch means.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a window.

FIG. 2 is a plan sectional view of a window.

FIG. 3 is an exploded perspective view of a window shutter.

FIG. 4 is a front view illustrating a winding device.

FIG. 5 is a cross-sectional view showing a clutch continuation state of the clutch means.

FIG. 6 is a sectional view showing a clutch disengaged state of the clutch means.

FIGS. 7A and 7B are a sectional view of FIG. 5A-A and a sectional view of BB, respectively.

FIG. 8 is an exploded perspective view of first and second clutch bodies.

FIG. 9 is a front view illustrating a release operation tool.

FIG. 10 is a perspective view illustrating a linked state of the winding device and the release device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Window sash 2 Shutter curtain 3 Shutter case 4 Winding device 4a Fixed shaft 4c Winding drum 5 Electric motor 7 Guide rail 8 Balance elastic machine 9 Clutch means 10 Casing 10d Deceleration chamber 11 First clutch body 11a Driving shaft 11b Mating projection 12 second clutch 12b engagement projection 13 biasing machine 14 braking member 15 grease material 16 release rod 18 wire member 19 release operating tool 20 case body 21 release lever 22 slide arm 23 spring 24 adjusting device

Claims (3)

[Claims] 1. An electric door which is configured to open and close a door body by rotating a winding means in a forward / reverse direction with driving of an electric motor, wherein power transmission from the electric motor to the winding means is intermittently performed. A clutch means, an energy storing means which is energized in a door body opening direction, and urgently opens the fully closed door body when the clutch means is disconnected, and receives an energy stored by the energy storing means. And a deceleration means for decelerating the emergency opening of the door body by giving resistance to the emergency opening of the door body. 2. The electric door opening and closing device according to claim 1, wherein the urging force of the energy storage means is set to open the door body to a half-open state. 3. The clutch device according to claim 1, wherein the clutch means includes: a first clutch body interlocked with the electric motor;
A second clutch body that is removably engaged with the first clutch body, the first clutch body is freely rotated, and the clutch bodies are housed in a state of being integrally rotated with the second clutch body. A clutch casing connected to the winding means so as to rotate integrally with the winding means, and the speed reduction means is constituted by a sliding resistance portion which gives resistance to relative rotation between the first clutch body and the clutch casing. The opening and closing device of the electric door.