JPH0586787A - Roll screen elevating device - Google Patents

Abstract

PURPOSE:To enhance the quietness of rotation of a wind-up pipe during upward and downward movement of a roll screen, and to stably carry out the upward and downward movement thereof. CONSTITUTION:A rotary drive part 5 is secured at a predetermined position in a cylindrical fixing part 16 in a wind-up pipe 22. The rotary drive part 5 is surrounded by a resin buffer material 8 charged in a cavity 6 between the inner surface of the cylindrical fixing part 26 and the rotary drive part 5. With this arrangement, it is possible to enhance the quietness of rotation of the wind-up pipe and to stably move the roll screen up and down.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll screen lifting device and, more particularly, to a roll screen lifting device for enhancing quietness when rotating a take-up pipe and performing stable lifting operation.

[0002]

2. Description of the Related Art Generally, a window for a building or the like is provided with a blind for blocking direct sunlight, and is opened and closed by an operation chain or the like. In addition, when there are many window surfaces, there is an electric blind that can open and close the blinds of each window all at once. As a kind of the blind, a so-called electric roll screen has been adopted in which a flexible sheet-shaped screen is wound around a pipe or the like or is unwound to raise and lower the screen.

FIG. 2 shows an example of a conventional roll screen lifting device. The roll screen lifting device 20 includes a storage box 21 formed in a ceiling portion near a window.
It is composed of a winding pipe 22 mounted inside, and a flexible sheet-shaped screen 23 wound around the winding pipe 22. One end of the screen 23 on the base side is fixed to the take-up pipe 22, and a weight bar 24 is horizontally attached to the other end to be suspended. A disk-shaped collar 25 having shoulder portions formed on the outer peripheral portion is loosely fitted to both ends of the winding pipe 22. Also,
A support shaft 25a is provided at the center of the outer surface of the collar 25. The support shaft 25a is fitted and held on the opposing wall surfaces of the storage box 21, and horizontally supports the winding pipe 22. In addition, the winding pipe 2
2 is rotatably held by a shoulder portion 25b of the collar 25, and a material having a low frictional resistance is used at the end portion of the shoulder portion 25b and the winding pipe 22 so that the winding pipe 22 can smoothly rotate. .. A tubular fixing portion 26 having a diameter smaller than the inner diameter of the winding pipe 22 is fixed to the inner surface of one of the collars 25. The tubular fixing portion 26 is fixed to the inner surface of the collar 25 in a cantilever structure, and is made by processing a metal pipe having high rigidity so that twisting and bending bending of the tip of the tube are reduced. A drive motor 27 and a gear head 29 that is connected to a rotation shaft (not shown) of the drive motor 27 and transmits a drive force are housed inside the cylinder. This gear head 29
Is fixed at a predetermined position in the cylinder with a screw 30, and a gear train (not shown) for reducing the rotation of the motor 27 is built therein. The output shaft 31 of this gear train extends from the end of the tubular fixing portion 26, and a coupling 32 is fitted to the tip thereof. The coupling 32 plays a role of transmitting the rotation of the output shaft 31 to the winding pipe 22. Therefore, the operator can set the forward / reverse rotation of the drive motor 27 by controlling the raising / lowering of the roll screen with an operation panel (not shown) and control the rotation direction of the winding pipe 22. This allows the roll screen to be wound and unwound. A lead wire 33 is connected to an end of the drive motor 27 to drive the drive motor 27. Power is supplied from a drive circuit (not shown) via the lead wire 33. At this time, the operating noise generated from the drive motor 27 and the gear head 29 resonates in the cylindrical portion of the cylindrical fixed portion to generate noise. Therefore, in order to reduce this noise, a rubber sheet is provided on the outer periphery of the drive motor 27 and the gear head 29. The sound absorbing material 34 made of is wound around.

[0004]

However, in the roll screen lifting device having the above-mentioned rotation drive unit around which the sound absorbing material is wound, the sound absorbing material of the rubber sheet also blocks the heat radiation generated during the operation of the drive motor. As a result, the temperature of the drive motor rises. Therefore, stable rated speed rotation can be maintained only for a short time, and there is a problem that the winding pipe for winding the roll screen cannot be operated smoothly.

Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art, to provide quietness when the winding pipe is rotated, and to provide a roll screen lifting device capable of performing a stable lifting operation of the roll screen. To do.

[0006]

In order to achieve the above object, the present invention accommodates a rotary drive unit inside a winding member whose ends are rotatably supported, and is transmitted from the rotary drive unit. In the roll screen lifting device for rotating the winding member by a rotating force to wind up the roll screen, the rotation drive unit is fixed at a predetermined position inside the tubular fixing unit inside the winding member. The peripheral portion thereof is surrounded by a resin buffer filled between the inner surface of the cylindrical fixing portion and the rotation driving portion.

In this case, the winding member is preferably in the shape of a pipe, and it is preferable to appropriately provide an inlet and an air outlet for filling the resin buffer with the peripheral surface of the pipe.

[0008]

According to the present invention, the rotary drive unit is fixed at a predetermined position inside the tubular fixing unit inside the winding member, and the periphery thereof is located between the inner surface of the tubular fixing unit and the rotary drive unit. Since it is surrounded by the filled resin buffer, it is possible to reliably absorb the operating noise generated from the rotation drive unit and prevent it from resonating in the cylinder, and at the same time, heat generated by the motor through the resin buffer is fixed to the cylindrical fixing unit. Also, heat can be radiated to the outside, and the temperature rise of the motor can be suppressed.

Further, a pipe is used as the winding member, and an injection port and an air vent for filling the resin buffer are provided on the peripheral surface of the pipe, so that the resin is reliably filled in the cylindrical fixing portion. can do.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a roll screen lifting device according to the present invention will be described below with reference to FIG. In FIG. 1, the same components as those of the conventional lifting device are shown in FIG.
The same reference numerals as those used in FIG.
Reference numerals 1 and 2 indicate a drive motor and a gear head, and the drive motor 1 and the gear head 2 are integrally connected via a rotary shaft (not shown). The outer diameter of the drive motor is formed slightly smaller than the inner diameter of the tubular fixing portion, and a flange 3 that is in close contact with the inner surface of the tubular fixing portion is formed at the end. On the other hand, the gear head 2 is also finished to have the same outer diameter as the outer diameter of the drive motor 1, and a fixing flange 4 is formed at the end thereof. The cylindrical fixing portion 26, the gear head 2 and the drive motor 1 are screwed and fixed by using the mounting holes 26a provided at predetermined positions on the peripheral surface of the fixing flange 4.

At this time, the end portion between the outer peripheral portion of the rotary drive portion 5 composed of the drive motor 1 and the gear head 2 and the inner surface of the tubular fixing portion 26 is of a cylindrical shape defined by the flanges 3 and 4. A cavity 6 is formed. The entire cavity 6 is filled with silicone resin through the injection port 7 formed in the cylindrical fixing portion 26. The silicone resin exhibits a predetermined elasticity after being filled and is cured to form the resin buffer body 8.

Since the silicone resin is in a fluid state when it is filled, the flanges 3 and 4 prevent the resin from flowing out of the cavity 6. In addition, at this time, in order to ensure smooth and reliable filling, it is preferable to form an air vent having a small diameter in addition to the inlet 7.

As described above, since the resin buffer 8 elastically surrounds and holds the rotary drive unit 5, it reliably absorbs vibrations and operating noises generated in the rotary drive unit 5 and also has a high thermal conductivity, so that the resin drive body 8 rotates. The heat generated from the drive unit 5 can be radiated to the cylindrical fixing unit 26, and the temperature rise of the lifting device can be reduced.

Further, the resin buffer 8 may be filled with another resin such as a bubble entraining resin as long as it has elasticity and good thermal conductivity.

[0015]

As is apparent from the above description, according to the present invention, the rotary drive unit is fixed at a predetermined position inside the cylindrical fixing unit in the winding member, and the periphery thereof is formed by the cylindrical fixing unit. By enclosing the resin buffer between the inner surface and the rotation drive unit, it is possible to achieve quietness during operation of the take-up pipe from the rotation drive unit and to smoothly perform the lifting and lowering operation of the roll screen. Play.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a roll screen lifting device according to the present invention.

FIG. 2 is a vertical cross-sectional view showing an example of a conventional roll screen lifting device.

[Explanation of symbols]

 1 Drive Motor 2 Gear Heads 3 and 4 Flange 5 Rotation Drive 8 Resin Buffer

Claims (3)

[Claims] 1. A winding driving member is housed inside a winding member whose end portion is rotatably supported, and the winding member is rotated by a rotational force transmitted from the rotation driving unit to wind up a roll screen. In the roll screen lifting device, the rotation driving unit is fixed at a predetermined position inside the tubular fixing unit inside the winding member, and the periphery thereof is the inner surface of the cylindrical fixing unit and the rotation driving unit. A roll screen lifting device surrounded by a resin buffer filled between the roll screen and the roll screen lifting device. 2. The roll screen lifting / lowering device according to claim 1, wherein the winding member is formed of a pipe, and an injection port for filling the resin buffer is formed in a part of a peripheral surface of the pipe. apparatus. 3. The roll screen lifting device according to claim 2, wherein an air vent is formed at a position opposite to the inlet on the peripheral surface of the pipe.