JPH0351520Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is an electric motorized method for winding up and unwinding the screen cloth by attaching the upper end of the screen cloth to a take-up roll and rotating the take-up roll in forward and reverse directions by a motor. This relates to mold roll screens.

An electric roll screen uses a motor to rotate the take-up roll by placing the motor on the side of the take-up roll and transmitting the rotation of the output shaft to the take-up roll. However, if such a motor is placed on the side of the take-up roll, the appearance is unfavorable and the overall size of the device increases.

Furthermore, in the case of a roll screen in which a motor is disposed within a take-up roll, the stator portion of the motor is generally fixed to a side plate, and the output shaft engages with the take-up roll to rotate the take-up roll. A large number of parts are required to provide a fixed shaft for fixing the stator section to the side plate and to fix the reduction gear to the take-up roll, and therefore the workability of the assembly work is also very poor. In addition, since two sliding contacts are provided between the take-up roll and the take-up roll support provided on the side of the take-up roll to supply power to the motor, contact failure may occur due to wear of the contacts. There is a high possibility that it will. In order to eliminate such drawbacks, the electric roll screen according to the present invention has a motor built into one end of the winding roll, a stator part of the motor being fixed inside the winding roll, and a motor-driven roll screen according to the present invention. The output shaft of the motor, which is provided coaxially with the take-up roll, is fixed to a side plate on the side of the roll screen. Therefore, when the motor is driven to raise and lower the screen cloth, the rotating shaft of the motor is held in a fixed position, and the stator section of the motor rotates around the rotating shaft, thereby rotating the take-up roll. to wind up or lower the screen.

According to this arrangement, the motor, its accompanying reduction gear, and other main parts are placed inside the take-up roll, resulting in an electric roll screen that has a small number of parts, is extremely compact overall, and has an excellent appearance. can get.

As mentioned above, the purpose of the present invention is to arrange the drive motor and its associated mechanism inside the take-up roll, fix the output shaft side of the motor to the side plate, and integrate the stator part with the take-up roll. The present invention provides an electric roll screen that is compact overall and has an excellent appearance by engaging the winding roll, and also improves the power supply circuit to the motor disposed in the take-up roll. Therefore, it is an object of the present invention to provide an electric roll screen in which poor contact and other causes of failure are minimized.

That is, the electric roll screen according to the present invention has a motor built into one end of the winding roll to which the upper end of the raw screen cloth is attached, and winds up the raw screen cloth by rotating the winding roll in forward and reverse directions. In an electric roll screen for winding and unloading, the stator of the motor is fixed to the take-up roll, and the output shaft of the motor, which is coaxial with the take-up roll, is fixed to a side plate on the side of the roll screen. The stator part of the motor can be rotated around the output shaft by the operation of the motor,
The limit switch on the lowering side of the screen cloth, the motor, and the reduction gear device connected thereto are installed as one unit in the take-up roll, the output shaft of which is fixed to the side plate, and the above motor is supplied with power. The power supply line is led out to the outside of the roll screen through the above-mentioned output shaft, and the other power supply line is led out to the outside of the roll screen through a sliding contact.

This will be explained below with reference to the drawings.

FIG. 1 is a front view showing an embodiment of the electric roll screen according to the present invention. In the figure, 1 is a raw screen cloth, 2 is a winding roll to which the upper end of the raw screen cloth is attached, and 3 and 4 are A side plate holding the take-up roll at both ends; 5 a drive section including a motor for driving the take-up roll; 6 an operation switch for controlling forward/reverse rotation and stop of the motor; In the illustrated example, a dry battery is built into the outer box of the switch 6, and the screen is operated by the dry battery.

FIG. 2 is a sectional view showing the internal structure of the drive section 5 including the motor shown in FIG. 1 and the relationship between this drive section and the side plate 3. As shown in FIG. In the figure, 7 is a motor;
Reference numeral 8 indicates a reduction gear device, and 9 indicates its output shaft. As shown in the figure, a reduction gear device 8 is provided between the motor 7 and the output shaft 9, forming a geared motor.

As shown in FIG. 1, the drive section 5 including the geared motor described above is built inside one end of the winding roll 2, and the outer frame 10 fixedly connected to the stator section of the geared motor is connected to the winding roll 2. fixed within the roll. Further, the output shaft 9, which is provided coaxially with the take-up roll, is received by a boss portion 11 made of an insulating material that is integrally provided with the side plate 3 placed on the side of the roll screen, and is fixed thereto. Ru.

Therefore, when the motor 7 is rotated in the forward or reverse direction in order to wind up and unwind the screen cloth onto the winding roll 2, the output shaft 9 of the motor is fixedly held on the side plate 3. Because
The stator section of the motor is rotated around the output shaft, thereby rotating the take-up roll 2 in the raw cloth winding direction or the raw cloth rewinding direction.

As described above, the motor 7 and the accompanying reduction gear 8 and other main parts are disposed within the take-up roll 2, making the entire roll screen extremely compact and providing a roll screen with excellent appearance.

In order to supply power to the above-mentioned motor, one of the motor power supply lines is connected from the switch 6 (see FIG. 1) through the ascending limit switch 13 to the lead wire 12,
The motor 7 is connected to a set screw 21 for connecting the motor 7 to the reduction gear device 8 through an output shaft 9 and a reduction gear device 8 made of a conductive material. This power supply line is further connected to one terminal of the motor 7 via the set screw 21 and the downward limit switch 14.

The other power supply line is connected from the switch 6 through a lead wire 17 to a cylindrical electrode 16 formed concentrically around the boss part 11 made of an insulating material, and connected to a carpon brush 15 provided in the drive part 5.
motor 7 by the lead wire through sliding contact with
connected to the other terminal of the

Among the limit switches 13 and 14,
The ascending limit switch 13 is opened at the upper limit position where the cloth is raised to stop the rotation of the motor, and the lower limit switch 14 is opened at the lower limit position where the cloth is lowered to stop the rotation of the motor. The circuit of the motor 7, limit switches 13, 14, and operation switch 6 is shown in FIG. 18 in Figure 3
and 19 indicate diodes which are connected in parallel with the limit switch to form a closed circuit in order to rotate the motor in the opposite direction when the limit switch is open.

In the figure, 20 is a motor support frame made of an insulating material, 21 is a set screw, and 22 is an extension of the side plate that supports the ascending limit switch.

As described above, according to the present invention, the drive section built into the take-up roll has a rotation transmission mechanism by fixing the stator part of the motor inside the take-up roll and fixing the motor output shaft to the side plate. It can be simplified and the number of components can be reduced, and by providing the lower limit switch in the drive section inside the take-up roll and the higher limit switch in the extension of the side plate, only the power supply line can be placed inside the side plate. Because the thickness of the side plate can be reduced, an electric roll screen that is overall extremely compact and good-looking can be obtained, and there is only one sliding contact to supply power to the motor built into the take-up roll. Therefore, there are fewer causes of poor contact and other failures due to wear, and maintenance and repair are easy.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing an embodiment of the electric roll screen according to the present invention, and FIG.
FIG. 3 is a sectional view showing the detailed structure of a motor used in the electric roll screen shown in the figure and its related parts, and FIG. 3 is a diagram showing its electric circuit. 1... Screen raw cloth, 2... Winding roll,
3, 4... side plate, 5... drive section, 6...
...Operation switch, 7...Motor, 8...Reduction gear device, 9...Output shaft, 10...Outer frame, 11...Boss, 12...Lead wire, 13...Limit switch, 14...Limit switch, 15... Carbon brush, 16... Cylindrical electrode, 17... Lead wire, 18, 19... Diode, 20... Motor support, 21... Stop screw, 22... Extension of side plate.

Claims (1)

[Scope of utility model registration request] An electric roll screen that has a motor built into one end of a take-up roll to which the upper end of the screen cloth is attached, and winds up and unwinds the screen cloth by rotating the take-up roll in forward and reverse directions. The stator part of the motor is fixed to the take-up roll, and the output shaft of the motor, which is provided coaxially with the take-up roll, is fixed to a side plate on the side of the roll screen, so that the stator part of the motor is fixed by the operation of the motor. is rotatable around the output shaft, and the lower limit switch of the screen cloth, the motor, and the reduction gear device connected to this are installed as one unit in the take-up roll, and the output shaft is attached to the side plate. The motor is fixed, and one power supply line that supplies power to the motor is led out to the outside of the roll screen through the output shaft, and the other power supply line is led out to the outside of the roll screen through a sliding contact. roll screen.