JPH059886Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electric curtain opening/closing device. More specifically, the present invention relates to a device for electrically opening and closing curtains, and in particular, to a curtain opening and closing device that allows the curtain to be opened and closed either electrically or manually.

[Prior Art] Conventionally, curtain opening/closing means using an electric opening/closing device using a motor has been performed as follows.
That is, a one-wheel pulley and a two-wheel pulley are attached to both ends of a curtain rail, and an endless wire is hung between these pulleys and a drive pulley driven by a motor having a reduction gear, and the endless wire is A leading curtain runner on which the opening/closing end of the curtain is hung is connected to the part, and the endless wire is operated by stopping the motor, and the leading curtain runner is stopped to open and close the curtain. was.

[Problems to be solved by the invention] As mentioned above, in the conventional electric opening/closing device, even if the motor stops when the curtain is finished opening/closing, the reduction gear and drive pulley attached to the motor output shaft remain connected. Therefore, even if you try to open or close the curtains manually, there is a problem such as the braking resistance of the motor, the resistance of reversely operating the reduction gear, and the frictional resistance of the wires and pulleys, making it impossible to open and close the curtains manually. In particular, it is inconvenient not to be able to open and close the curtains manually during power outages, etc., and in the past, in hotels, etc., people suddenly manually open and close curtains without knowing that they are electric curtain opening/closing devices and mistaking them for general manual curtain opening/closing devices. There were also problems with the curtains opening and closing and damaging the curtains.

An object of the present invention is to solve the above-mentioned problems and provide an electric curtain opening/closing device that can easily open and close curtains either electrically or manually.

[Means for Solving the Problems] In order to solve the above problems and achieve the purpose of the invention, the present invention is characterized by the following configuration. That is, two timing pulleys, a timing belt stretched between the two timing pulleys, a motor having a reduction gear for rotating one of the timing pulleys, and the two timing pulleys. a gear disposed between them and connected to a curtain driving pulley; an arm disposed with a roller that can press the timing belt against and release it from the gear; It is characterized by comprising a cam driven by a solenoid to press the belt against the gear.

[Example] The present invention will be explained in detail below using an example shown in the drawings.

FIG. 1 is a front view for explaining the main parts, FIG. 2 is a right side view of the same, and FIG. 3 is a plan view of the same. Here, 1
a, 1b are timing pulleys, 2 is a frame, 3
is the timing belt, 4 is the motor, 5 is the gear, 6
1 is a curtain driving pulley, 7 is a roller, 8 is an arm, 9 is a shaft, 10 is a pin, 11 is a cam, and 12 is a solenoid.

The two timing pulleys 1a, 1b are rotatably supported by a frame 2, and the timing belt 3 is stretched between the two timing pulleys 1a, 1b. It fits the teeth. Further, one of the timing pulleys 1a is connected to a motor 4 having a reduction gear for rotating the timing pulley. Therefore, when a switch (not shown) is opened or closed, the motor starts and stops, and the timing pulley 1a connected to the motor 4 and the timing belt 3 meshing with the timing pulley 1a also start and stop.

A gear 5 that can mesh with the timing belt 3 is disposed between the two timing pulleys 1a and 1b, and the gear 5 is connected to a curtain driving pulley 6. Note that the gear 5 is rotatably supported by the frame 2. A roller 7 is disposed near the gear 5 and is capable of bringing the timing belt 3 into contact with and separating from the gear 5. The roller 7 is rotatably supported by an arm 8 made of two plates. There is. One end of the arm 8 is rotatably supported on the frame 2 by a shaft 9, and the other end of the arm 8 is fixed by a pin 10, which extends outside the frame 2 and engages with a cam 11. . Cam 11 is driven by solenoid 12. And it is driven by the solenoid 12. The solenoid 12 operates in the direction of pulling up the cam 11 in FIGS. 1 and 2 only when the motor 4 is activated. In addition, in the figure, 13 is a stopper, which prevents the cam 11 from going too far downward. Reference numeral 14 denotes a spring that pulls the arm 8 outward when the cam 11 is not operated in the direction to pull it up, and positions the roller 7 so that the timing belt 3 does not come into pressure contact with the gear 5. Furthermore, in this embodiment, the roller 7, arm 8, etc. are shown only on the left side in FIG. It is formed in such a way that it can be conveyed.

FIG. 4 is an explanatory diagram of the double curtain opening/closing mechanism. A single pulley 2 is installed at both ends of the curtain rail 20.
1 and two wheel pulleys 22 are installed, and these pulleys 2
1 and 22 and a drive pulley 6 driven by a motor 4 having a reduction gear, an endless wire 23 is hung at a predetermined portion of the endless wire 23.
The opening/closing end 24a of the curtain 24 is connected to the hooked leading curtain runner 25, the motor 4 is stopped, the endless wire 23 is operated, the leading curtain runner 25 is stopped, and the curtain 24 is opened/closed. Do this.

Since the electric curtain opening/closing device according to the present invention is configured as described above, when the switch is turned on and the motor 4 is operated, the cam 11 is moved upward by the solenoid 12, and the pin engaged with the cam 11 is moved upward by the solenoid 12. Move 10 inward. As the pin 10 moves inward, the arm 8 rotates inward about the shaft 9, and the roller 7 disposed on the arm 8 pushes the timing belt 3 inward, causing the timing belt 3 to connect to the gear 5. Apply pressure. Since the gear 5 is connected to the curtain driving pulley 6, when the motor 4 is operated, the curtain driving pulley 6 is operated, and the curtain can be opened and closed.

Also, when the switch is turned off to stop the operation of the motor 4, the cam 11 moves downward and the spring 14
pulls the arm 8 outward, the roller 7 disposed on the arm 8 moves outward, and the timing belt 3
is removed from gear 5. Since the gear 5 is connected to the curtain driving pulley 6, when the motor 4 stops, the curtain driving pulley 6 is stopped, and opening/closing of the curtain can be stopped. Since the present invention is configured as described above,
Even if the curtain is opened and closed manually, the gear 5 rotates, but the timing belt 3, roller 7, and timing pulleys 1a and 1b do not rotate, so the curtain can be easily opened and closed manually.

[Effects of the invention] Since the present invention is configured as described above, it has the following effects.

In conventional electric opening/closing devices, even if the motor stops when the curtain has finished opening/closing, the reduction gear and drive pulley attached to the motor output shaft remain connected, so even if you try to manually open/close the curtain, the motor will stop working. There are problems such as braking resistance, resistance to reverse operation of the reduction gear, and frictional resistance of the wires and pulleys, making it impossible to open and close manually.In particular, it is inconvenient to be unable to open and close manually during power outages. In addition, there have been problems in hotels etc. in the past when people accidentally opened and closed the curtains manually, not knowing that it was an electric curtain opening/closing device, and mistaking it for a general manual curtain opening/closing device, resulting in damage to the curtains. The electric curtain opening/closing device according to the present invention is useful because it has the effect of being able to easily open and close the curtain either electrically or manually.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a front view for explaining the main parts, FIG. 2 is a right side view of the same,
FIG. 3 is a plan view of the same, and FIG. 4 is an explanatory diagram of the curtain opening/closing mechanism. 1a, 1b...timing pulley, 2...frame, 3...timing belt, 4...motor,
5...Gear, 6...Curtain driving pulley, 7...
...Roller, 8...Arm, 9...Shaft, 10...Pin, 11...Cam, 12...Solenoid.

Claims (1)

[Scope of utility model registration request] two timing pulleys, a timing belt stretched between the two timing pulleys, a motor having a reduction gear for rotating one of the timing pulleys, and between the two timing pulleys. a gear disposed on the shaft and connected to a curtain driving pulley; an arm disposed with a roller that can press the timing belt against and release it from the gear; An electric curtain opening/closing device characterized by comprising a cam driven by a solenoid for pressure contact with a gear.