JPH0446629Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of an electric hanger suitable for displaying relatively heavy bulletin items, such as picture frames and tapestries.

[Prior art] A conventional electric hanger is the same as an electric hoist, and consists of a runner that is movably attached to a hanger rail, a hanger case supported by the runner, and an electromagnetic motor with a speed gear that is attached to the hanger case. It was equipped with a take-up pulley fixed to the output shaft of the electromagnetic motor, and a hook having an upper end fixed to the take-up pulley and a lower end for hanging a notice.

[Problem that the invention aims to solve] Since the electric hanger using an electromagnetic motor with a speed reducer is large in shape and weight, the hanger rail must also be large and sturdy, making it unsuitable for display areas such as picture frames and tapestries. I stopped talking. Therefore, in exhibition spaces for picture frames, tapestries, etc., instead of using electric hangers, the displayed items were manually lifted and hung on manual hangers, but since this required considerable labor and time, there was a demand for compact electric hangers. Ta.

The present invention was made in response to this demand, and its purpose is to provide an electric hanger that is compact in shape.

[Means for solving the problem] In order to achieve the above object, the means adopted by the present invention is a hanger rail 10 as shown in FIG.
The hanger rail is provided with a runner 12 that can run freely within the hanger rail, a hanger case 14 supported by the runner, a pulley 18 that is rotatably supported by the hanger case, and a pulley 19 that is supported by the pulley 18.
In a hanger consisting of a lifting cord having one end attached to the hanger rail 8 and the other end provided with a means for hanging a poster 30, an ultrasonic motor 16 is attached to the hanger case 14, and a pulley 18 is fixed to the output shaft of the ultrasonic motor. The axle of the runner 12 may be supported in the hanger case, an axle that runs on the hanger rail may be fixed to the rotating shaft of the axle, and a second ultrasonic motor may be provided in the hanger body for rotating and driving the axle.

[Function] The ultrasonic motor used in the electric hanger of the present invention is smaller in size than an electromagnetic motor, and has low speed and high torque, so no reduction gear is required. Furthermore, since the holding torque of the ultrasonic motor is always greater than the starting torque, an object lifted during operation can be held as is when stopped, and no special self-locking mechanism is required.

Because ultrasonic motors are compact, it is possible to install two of them in a hanger case, and by using one motor to raise and lower a bulletin board and the other to rotate the runner wheels, you can move the bulletin board without touching it. Not only can the bulletin board be raised and lowered, but it can also be moved left and right along the hanger rail.

When hanging a bulletin board with two or three lifting cords,
It is preferable to use a separate motorized hanger for each lifting cord. Since ultrasonic motors have good responsiveness, it is possible to control each motor with high precision, and even when hanging a bulletin board with two or three lifting strings, the position can be adjusted accurately. I can do it.

[Example] The electric hanger of the present invention will be described based on an example shown in the drawings.

As shown in Figures 1 and 2, the first embodiment of the electric hanger is a hanger rail 1 installed on the ceiling of a building.
0 is fixed, and two sets of runners 12 are installed inside the hanger rail via wheels 13 so as to be freely movable. The runner 12 and the hanger case 14 are integrally formed, and an ultrasonic motor 16 is attached to the hanger case.
is installed. A pulley 18 is fixed to the output shaft of the ultrasonic motor 16, and the upper end of a wire 20 serving as a lifting string is fixed to the pulley. A hook 22 is attached to the lower end of the wire, and the hook is hung on a ring 24 attached to the upper end of the bulletin board 30. A drawstring 32 that guides the runner 12 in the longitudinal direction is passed through the hanger rail 10, and although not shown, the drawstring 3 is attached at the end of the hanger rail.
2 to move the runner 12. Although not shown, power supply lead wires for each ultrasonic motor are wired from the motor case to the switch box.

The bulletin board 30 is initially placed on the floor. When you press the lower switch on the electric hanger switch box,
Since the ultrasonic motor 16 rotates in a direction to lower the wire 20, the wire 20 is lowered. Therefore,
Press the stop switch to stop the rotation, and then remove the wire 20.
After hanging the hook 22 at the lower end of the holder on the ring 24 of the bulletin board 30, press the up switch. The ultrasonic motor 16 rotates in reverse and winds up the wire 20, causing the hook 22 to rise and the bulletin board to be lifted. Once it reaches the desired position, press the stop switch to stop the rotation, check the left and right balance, and operate the up or down switch on the switch box on either of the electric hangers to accurately place the bulletin board. .

As shown in FIGS. 3 and 4, two racks 11 are arranged on the inner bottom of the hanger rail 10. An axle 15 is supported on the runner 12, a pinion 13 meshing with the rack 11 is provided as a wheel on the axle, and a driven gear 19 is fixed to the axle 15. Two ultrasonic motors 16 and 1 are installed in the hanger case 14.
A pulley 18 is fixed to the output shaft of one ultrasonic motor 16 in the same manner as in the previous embodiment, and a wire 20 is wound around the pulley. A drive gear 21 is fixed to the output shaft of the other ultrasonic motor 17. A transmission gear 23 is supported on the hanger case 14 and the rotation of the drive gear 21 is transmitted to the driven gear 19. Although not shown, the switch box of this electric hanger is provided with a raise, stop, and lower switch for one ultrasonic motor as well as a forward, stop, and retract switch for the other ultrasonic motor. The operations using the up, stop, and down switches are the same as in the previous embodiment, but when the forward switch is pressed, the electric hanger moves forward on the hanger rail in one direction, and when the backward switch is pressed, it moves in the opposite direction. Therefore, the bulletin board can be carried to a predetermined position and lifted by simply operating a switch.

Although an embodiment is not shown, it is also possible to use a friction wheel in place of the pinion 13 and a friction material in place of the rack 11.

[Effects of the invention] As mentioned above, the electric hanger using the ultrasonic motor of the present invention is more compact than the conventional one using an electromagnetic motor, so it is suitable for displaying picture frames, tapestries, etc. There is. Also, when hanging a bulletin board with two or more strings, highly accurate position adjustment is possible. Furthermore, with the use of two ultrasonic motors, it is possible to not only raise and lower the bulletin board but also move it forward and backward along the hanger rail with just a switch.

[Brief explanation of the drawing]

Figures 1 and 2 are side and front views of an electric hanger according to one embodiment of the present invention, and Figures 3 and 4 are views corresponding to Figures 1 and 2 of another embodiment. . In the figure, 10 is a hanger rail, 12 is a runner, 13 is a wheel, 14 is a hanger case, 15
is an axle, 16 and 17 are ultrasonic motors, 18 is a pulley, 19 is a driven gear, 20 is a wire (lifting string),
Reference numeral 21 indicates a drive gear, and 30 indicates a bulletin board.

Claims (1)

[Claims for Utility Model Registration] 1. A hanger rail, a runner attached to the hanger rail so that it can run along its longitudinal direction, a hanger case supported by the runner, and a motor attached to the hanger case. and an electric hanger comprising a pulley fixed to the output shaft of the motor, and a lifting cord having an upper end fixed to the pulley and a means for attaching and detaching a notice at the lower end, the motor being an ultrasonic hanger. An electric hanger that uses an ultrasonic motor. 2. The runner is equipped with wheels that roll within the hanger rail and an axle fixed to the wheels, and the hanger case is equipped with a second ultrasonic motor,
A drive gear is fixed to the output shaft of the second ultrasonic motor, and the drive gear engages with a driven gear fixed to the axle.
An electric hanger using an ultrasonic motor as described in .