JPH0349349B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a winding device for automatically opening and closing shutters, blinds, roll curtains, screens, etc.

Prior Art The inventors have developed winding devices for automatic opening and closing of shutters, blinds, roll curtains, scrubbers, etc., but conventional devices have a small-diameter outer rotor type motor drive unit on the winding shaft of the shutter, etc. The drive shafts were connected via a predetermined reduction gear to control the drive.

Problems to be Solved by the Invention In this conventional motor, the outer diameter of the motor remains the same and the width of the core is appropriately widened to make the motor slender, thereby making it easy to create a drive unit with a desired output. This is preferable because it allows the winding device such as the shutter to be kept small. However, as the mass of the rotor increases, the inertia of the motor increases, causing the shutter to stop suddenly or to move at a certain position. This made stop control difficult.

Means for Solving the Problems In order to solve the above technical problems, the present invention has the following features:
A drive section for winding up shutters, screens, etc. is formed by an outer rotor type motor, and an exterior body of a cylindrical winding pipe for winding up shutters, screens, etc. is pivotally attached to the outer periphery of the drive section. The drive gear of the first stage sun gear of the planetary gear transmission is connected to the output side of the drive section of the outer rotor type motor, and the final stage internal gear of the planetary gear transmission is connected to the exterior body, A locking and disconnecting device for connecting and disconnecting the driving portion and the exterior body is disposed on the opposite output side of the driving portion of the outer rotor type motor, and when the driving portion is stopped, the locking and disconnecting device is actuated to open the driving portion. It is an object of the present invention to provide a winding device such as a shutter, characterized in that a locking and disengaging device is formed so as to be freely engageable so as to transmit rotation of an output rotor to an exterior body rotating in a direction opposite to that of the rotor.

Example Hereinafter, the present invention will be explained based on examples.

The figure shows one embodiment of the invention. Winding device 1
This is formed by installing a drive unit 3 such as an AC motor inside an exterior body 2 of an elongated pipe-shaped winding drum that is pivotally supported at both ends. The drive section 3, such as an AC motor, is of a slightly elongated outer rotor type, with a predetermined induction coil 5 wound around an inner stator 4 and an outer rotor 6 that can be freely controlled. The rotor 6 has a thin cylindrical frame 7 fixed to its outer periphery, and a narrow cylindrical fixed shaft 8 passing through the center of the stator 4 has bearings 9 and 10 fixed to both sides of the stator 4. Bracket 11,1
It is pivotally connected via 2. A motor control line 13 and the like is inserted through the fixed shaft 8, and an induction coil 5 is passed through an appropriately provided opening 14 through a terminal block 15.
is connected to. Further, a drive gear 16 for output driving is attached to the bracket 11 on the output side (left side in the figure) of the rotor 6, and this drive gear 16 is used as a first stage sun gear to connect a plurality of planetary gear transmission devices. 17, and the final group of internal gears (not shown) of the planetary gear transmission 17 are fixed to the inner peripheral part of the exterior body 2, so that the exterior body 2 is rotationally driven at a predetermined deceleration speed, A shutter (not shown) can be freely wound onto an exterior body 2, which is a winding cylinder, so that it can be opened and closed. In a planetary gear mechanism, the central sun gear and the carrier fixed arm rotate in the same direction, and the planet gears rotate in the opposite direction. Therefore, when the driving gear 16 of the sun gear rotates, the carrier arm is fixed at the final stage and the rotation is transmitted from the planetary gear to the outer internal gear, and since the sun gear of the planetary gear rotates in the opposite direction, it is integrated with the internal gear. The exterior body 2 rotates in the opposite direction to the drive gear 16. On the other hand, the outer side surface of the bracket 12 on the non-output side of the rotor 6 (the right side in the figure) has been subjected to abrasion-resistant surface treatment such as carburizing and quenching. A locking abutment part 20 like a brake shoe is provided with a locking/disengaging device 18 fixedly disposed on the fixed shaft 8 and an engaging member 19 like a clutch gear pivotally connected to the fixed shaft 8 is provided around the side surface. Through this, a pressing member 21 such as a predetermined elastic coil spring is pressed against the abrasion resistant surface of the bracket 12 so as to come into contact with it and achieve frictional engagement. Pressing material 2
1 is attached to the inner peripheral part of the locking/disengaging device 18 with one end in contact with a thrust bearing 22, and acts to press and bias the engaging member 19 at all times. When the 18 electromagnetic coils 23 are actuated, the engaging member 19 is attracted to the engagement/disengagement device 18 by the electromagnetic force of the electromagnetic coil 23, thereby contracting. An engaging portion 24 in the shape of a spur gear is bored in the outer circumferential portion of the engaging member 19, and the engaging portion 24, which is shaped like an internal gear, is bored into the outer periphery of the engaging member 19. When freely engaged and the engagement member 19 is frictionally engaged with the bracket 12 of the rotor 6,
The rotation of the rotor 6 can be transmitted to the exterior body 2 even on the non-output side. 26 is a control line for exciting the electromagnetic coil.

Function: The electromagnetic coil 23 of the locking/disengaging device 18 is energized and excited, and the drive circuit of the drive unit 3 is energized to drive the shutter to the exterior body 2 and stop the shutter, which has been raised and lowered, at a predetermined position. , cut off the above drive circuit,
The electromagnetic coil 23 is de-energized. Then, the magnetic force of the electromagnetic coil 23 disappears, the engaging member 19 is pushed toward the driving part by the pressing member 21, and the locking abutment part 20 on the side circumference is brought into contact with the predetermined side of the bracket 12 of the rotor 6. The outer body 2 is brought into contact with the circumferential surface and frictionally engaged, and the rotation of the exterior body 2 is transmitted by the drive unit 3 in the opposite direction to the output side on the non-output side of the drive unit 3 by the above-mentioned sun gear transmission mechanism. be. Therefore, the inertial energy held by the drive unit is dissipated into the exterior body and the drive unit stops. In particular, when the engaging member is engaged with the rotor, rotation is transmitted to the exterior body in the opposite direction to the rotation direction that was previously driven on the output side, so the exterior body is suddenly braked. It can be stopped. Therefore,
Even if the drive part is elongated to increase the output and the inertia becomes large, the inertia energy can be dissipated by canceling it as described above when stopping, making it possible to suddenly stop the shutter or perform desired stop control. This also prevents twisting of the fixed shaft that passes through the stator and has low rigidity.

In addition, since the engaging member is frictionally engaged with the bracket, rotation can be transmitted to the exterior body through an appropriate slip, and it can be stopped smoothly without impact.

In addition, as mentioned above, the problem can be solved by using the outer casing of the drive section, which is the winding drum of the shutter, without increasing the size of the device. Savings can also be made.

In the above embodiment, the gear-shaped engagement member is used to freely engage and disengage the transmission, but it is also possible to use a differential gear device using a planetary gear mechanism, other clutch mechanisms, engagement mechanisms, etc. It is also possible.

In the embodiments, shutters have been described, but the present invention can also be applied to blinds, roll curtains, screens, etc.

Effects of the Invention As described above, according to the present invention, a winding device such as a shutter can be made small in diameter, and
The output can be increased by making the drive section of the winding device elongated. When the drive section of the outer rotor type motor is driven, the exterior body of the take-up pipe can be rotated in a direction opposite to the rotation of the rotor of the drive section via the planetary gear transmission device. Then, when the drive unit is stopped, the rotation due to the inertial force of the rotor of the drive unit is transmitted to the exterior body via the locking and disengaging device on the side opposite to the rotor, and the inertia energy held by the drive unit is absorbed by the exterior body. This makes it possible to suddenly stop the shutter, etc., and to quickly and accurately position the shutter when it is stopped.

[Brief explanation of drawings]

The figure is a partially omitted cross-sectional view of one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Winding device, 2... Exterior body, 3... Drive part, 6... Rotor, 18... Engagement/disengagement device, 19...
Engagement member.

Claims (1)

[Claims] 1. A drive section for winding up the shutter, screen, etc. is formed by an outer rotor type motor, and a cylindrical winding pipe for winding up the shutter, screen, etc. is attached to the outer periphery of the drive section. The exterior body is pivotally mounted to connect the drive gear of the first stage sun gear of the planetary gear transmission to the output side of the drive section of the outer rotor type motor, and the internal gear of the final stage of the planetary gear transmission is connected to the output side of the drive section of the outer rotor type motor. A locking/disengaging device is connected to the exterior body and disposed on the opposite output side of the drive portion of the outer rotor type motor to engage/disengage the drive portion and the exterior body, and when the drive portion is stopped, the locking/disengaging device is disposed. 1. A winding device for a shutter or the like, characterized in that an engaging/disengaging device is formed so as to be freely engageable so as to operate and transmit the rotation of the rotor, which is the output of a drive section, to an exterior body rotating in the opposite direction to the rotor.