JPH0622498U - Electric shutter - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] To allow the electric shutter to be pulled up manually. [Structure] A transmission path is formed between the output shaft 18 of the motor 14 capable of rotating in the forward and reverse directions and the winding drum 12 of the shutter 10 via two one-way clutches on the winding side and the winding side. The clutch is provided with a release mechanism that disconnects the transmission path from the passive side.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric shutter that can be manually pulled up even when a power failure occurs.

[0002]

[Prior art]

 The electric shutter does not work in the event of a power failure, so if you try to lift it during a power failure, you must hold the shutter by hand and pull it up. However, since a motor is connected to the shutter via a speed reduction mechanism, it requires a very large force to pull it up by hand. Also, in the case of a coaxial motor in which the rotor shaft and the stator housing are cylindrically coaxial, the structure is such that mechanical braking works when stopped, so that it cannot be pulled up by hand. . Since it is not possible to evacuate in the event of an emergency such as a fire accompanied by a power failure, an auxiliary power source such as a battery is provided so that the motor can be driven to pull it up, or the handle can be manually turned from inside to rotate the drive shaft. I am trying to raise it.

[0003]

[Problems to be solved by the device]

 However, in the case of an auxiliary power supply system using a battery, it takes time and effort to implement, the equipment cost increases, and the battery capacity, wiring condition, etc. must be constantly managed. Also, if a manual handle is provided, it is necessary to make a hole in the wall for the handle to pass through to the drive shaft, and the handle must be placed in a location where it can be taken out of the room immediately. The present invention solves such a problem, and in short, in an emergency, the transmission path from the shutter to the motor can be cut off.

[0004]

[Means for Solving the Problems]

 Under the above problems, the present invention configures a transmission path between the output shaft of the motor that can rotate forward and backward and the winding drum of the shutter via two one-way clutches on the winding side and the winding side. The releasing one-way clutch is provided with a release mechanism for cutting off the power transmission path from the passive side.

[0005]

[Action]

 By taking the above measures, if this release mechanism is activated in an emergency, etc., the power transmission path from the shutter to the motor, which is the power transmission from the passive side of the one-way clutch on the lowering side, is cut off. Since the transmission from the passive side of the one-way clutch on the winding side is originally cut off, it is possible to hold the shutter by hand and pull it up.

[0006]

【Example】

 FIG. 1 is a vertical cross-sectional view of a drum 12 that raises and lowers a slat 11 that constitutes the shutter 10. A motor (coaxial motor) 14 and a drive unit 16 are respectively provided at both ends inside the drum 12 that connects the upper ends of the slat 11 to each other. , And the output shaft 18 of the motor 14 and the drive unit 16 are connected by a connecting rod 20. As a result, when the motor 14 is driven, the power of the output shaft 18 is transmitted to the output sleeve 22 constituting the outer peripheral member of the drive unit 16 via the connecting rod 20, and is fixedly fitted on the outer periphery of the output sleeve 22. The slat 11 is moved up and down by turning 12. The drum 12 is supported at a predetermined position by a fixed shaft 24 of the motor 14 and a supporting shaft 26 of the drive unit 16 which project to the outside. Further, since the motor 14 can rotate in the forward and reverse directions, the slat 11 is raised or lowered. By housing the motor 14 and the drive unit 16 inside the drum 12 in this way, these devices can be waterproof and dustproof, and in appearance they are box-shaped with a small storage space, similar to a manual shutter. Yes, the design can be unified. Further, since the motor 14 is a coaxial motor, the brake is applied when the motor 14 is stopped and no locking is required. By the way, the ascending / descending stroke of the slat 11 is detected by a limit switch provided in the motor 14, but since these are not the gist of the present invention, detailed description thereof is omitted here.

On the other hand, the coil spring 32 is wound between the output sleeve 22 of the drive unit 16 and the guide bracket 30 that supports the stator 28 of the motor 14 in the drum 12, and the coil spring 32 is wound around the coil spring 32. Has a structure in which the output sleeve 22 is tightened when it is rotated in the direction in which the slat 11 is unwound (in order to generate a rewinding force), and is balanced with the weight of the slat 11. With such a configuration, as the weight of the slat 11 becomes heavier and the unwinding amount becomes larger, the rewinding force of the coil spring 32 becomes larger, and thus the weightless state can be achieved over the entire lifting range and the motor 14 The capacity will be reduced, and the weight will be reduced during the manual pull-up described later.

FIG. 2 is an exploded perspective view of the drive unit 16, FIG. 3 is a sectional view of the drive unit 16, and FIGS. 4 to 8 are AA (winding one-way clutch portion) and BB (of FIG. 3), respectively. It is a cross-sectional view of one-way clutch section on the lowering side), CC (engagement block section), DD (connecting rig section), and EE (release block section). In short, driving of the connecting rod 20 The shaft 34 and the output sleeve 22 are connected via two one-way clutches 36, 38 on the winding side and the winding side, which are installed in opposite directions. Here, with a one-way clutch, rotational force in one direction from the driving side is transmitted to the passive side, but rotational force in the opposite direction is blocked, and rotational force in the forward direction from the passive side is blocked. Rotational force in the opposite direction is of a structure that transmits power.

The winding one-way clutch 36 is one in which an input disk 40 to which the drive shaft 34 of the connecting rod 20 is dynamically connected is loosely fitted in the output sleeve 22. The input disk 40 and the output sleeve The following hooks 42 are provided between the hooks 22 and 22. That is, the hook 42 protrudes from the outer circumference of the input disk 40 at a certain angle with respect to the shaft center, and the protruding portion is spring-loaded by the spring 45 into the engaging notch 44 formed on the inner circumference of the output sleeve 22. It has been created and entered (Fig. 4). As a result, when the input disc 40 rotates clockwise, the hook 42 enters the engaging notch 44 due to the angle of the hook 42, and the rotational force of the input disc 40 is transmitted to the output sleeve 22 by the hook 42. When the input disk 40 rotates counterclockwise, the hook 42 is pushed by the engaging notch 44, that is, the output sleeve 22 to be retracted into the input disk 40, and the input disk 40 idles in the output sleeve 22. .

The winding-down one-way clutch 38 is provided adjacent to the outside of the winding one-way clutch 36 (in the direction toward the support shaft 26 of the drive unit 16; the same applies below), and its structure is the winding one-way clutch. Similar to 36, it is composed of an input disk 46, a hook 48, a spring 50, etc., except that it is loosely fitted in an intermediate sleeve 52 which is loosely fitted in the output sleeve 22 and the hook 48. The point is that they are provided at opposite angles (Fig. 5). As a result, when the input disk 46 rotates counterclockwise, the rotational force is transmitted to the intermediate sleeve 52, but when the input disk 46 rotates clockwise, it rotates idly.

Inside the intermediate sleeve 52, an engagement block 56 is projected by an outer periphery at a certain angle with respect to the shaft center and fitted into an engagement notch 54 formed in the inner periphery of the output sleeve 22 by a spring 58. It is provided so as to be biased in the protruding direction (FIG. 6). This angle is a direction in which the output sleeve 22 is rotated when the intermediate sleeve 52 is rotated counterclockwise, but is idle when the intermediate sleeve 52 is rotated clockwise. A pin 60 projects axially from the outer end of the engaging block 56.

A release drum 62, a part of which protrudes from the output sleeve 22, is loosely fitted side by side with the intermediate sleeve 52. The pin 60 of the engaging block 56 is inserted into the release drum 62. A connecting ring 66 having a hole 64 formed therein is loosely fitted (FIG. 7). Further, inside the release drum 62, a release block 68 projecting to the outer periphery at a certain angle with respect to the shaft center (it may be the same angle as the engagement block 56) is provided by a spring 70 so as to be biased in the projecting direction. (FIG. 8), the pin 72 also protrudes from the inner end of the release block 68, and the pin 72 enters the hole 64 of the connecting ring 66.

As described above, when the release block 68 is pushed in the radial direction and retracted inward, the coupling ring 66 is rotated to retract the engagement block 56 of the one-way clutch 38 on the lowering side into the intermediate sleeve 52. 52 and the output sleeve 22 are disengaged. On the other hand, the one-way clutch 36 on the winding side is free from rotation in the same direction from the passive side (the output sleeve 22 side). Therefore, when the output sleeve 22 is turned by hand, it is at least free to turn clockwise, and the slat 11 can be pulled up by hand. From these things, the structure of the release drum 62 and the release block 68 becomes the release mechanism 74 that disconnects the transmission path from the passive side of the one-way clutch 38 on the lowering side even when the motor 14 does not move due to a power failure. Of.

FIG. 9 is a side view in which the shutter 10 having the above-described structure is applied to a shutter, but a shutter box 80 is installed above a sash 78 in which a glass screen 76 or the like is fitted, and the slat 11 is wound therein. The drum 12 that has been received is accommodated. The slats 11 unwound from the drum 12 are guided by the shutter rails 82 on both sides to move up and down. By the way, regarding the operation of the release mechanism 74 described above, in addition to winding the belt 84 fixed to the shutter box 80 and the like on the outer periphery of the release drum 62, the wire 86 is connected to the end of the belt 84 and this wire 86 is connected. It is conceivable that the sash 78 or the like is allowed to look into the room from the release mechanism operating portion 88 attached at a position where it can be reached. FIG. 10 is a sectional view of the release mechanism operating portion 88. When the shutter 10 is to be raised in the event of a power failure, the operating ring 90 attached to the end of the wire 86 is pulled by hand. Then, the belt 84 is tightened and the release block 68 is pushed to release the one-way clutch 38 on the lowering side, so that the slat 11 is pulled up by hand. At this time, a method of pushing the block 94 with the knob bolt 92 and tightening the wire 86 with the wall of the release mechanism operating portion 88 and the block 94 so that the wire 86 once pulled does not loosen may be fixed. Conceivable.

[0015]

[Effect of device]

 As described above, since the present invention is as described above, even if the electric shutter is configured, it can be manually lifted in the same way as the manual shutter by activating the release mechanism in case of emergency such as fire. Therefore, there is no need for an auxiliary power source such as a battery, nor is it necessary to form a through hole in the wall surface or install a handle in the room to enable manual pulling. As a result, there is naturally no need for waterproofing of the through holes or loss of aesthetics. Furthermore, the drive unit, motor, etc. are housed inside the drum, so they are dustproof and waterproof, and a compact box of the same size as the manual type can be used, so the design can be unified.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a drum showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a drive unit showing an embodiment of the present invention.

FIG. 3 is a vertical sectional view of a drive unit showing an embodiment of the present invention.

4 is a cross-sectional view taken along the line AA of FIG.

5 is a sectional view taken along line BB of FIG.

6 is a cross-sectional view taken along line CC of FIG.

7 is a cross-sectional view taken along the line DD of FIG.

8 is a cross-sectional view taken along line EE of FIG.

FIG. 9 is a side sectional view of the shutter mounting showing the embodiment of the present invention.

FIG. 10 is a side sectional view of a release mechanism operating portion showing an embodiment of the present invention.

[Explanation of symbols]

 10 shutter 12 drum 14 motor 18 motor output shaft 36 winding upper one-way clutch 38 winding lower one-way clutch 74 release mechanism

Front Page Continuation (72) Inventor Nose Hajime 27-1 Ima Okayama City Om Equipment Co., Ltd. Okayama Main Company (72) Inventor Tokuzo Kobayashi 2-7 Ima Oma Equipment Co. Okayama Corporation Head office

Claims (1)

[Scope of utility model registration request] 1. A winding drum (12) of a shutter (10) from an output shaft (18) of a motor (14) capable of rotating in the forward and reverse directions.
A transmission path through two winding one-way clutches (36) and (38) between the winding side and the winding side, and disconnecting the transmission path from the passive side to the winding side one-way clutch (38). An electric shutter equipped with a release mechanism (74) that allows manual pulling.