JPS6051891B2 - Installation structure of electric motor for opening and closing curtains - Google Patents

Description

Detailed Description of the Invention Technical Field and Purpose This invention relates to a mounting structure for an electric motor that drives an electric curtain, and its purpose is to easily hang a curtain drive wire on the output shaft of the electric motor, and to attach the curtain to the electric curtain. An object of the present invention is to provide a motor mounting structure capable of always maintaining a drive wire at an optimal tension.

Embodiment Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings. Reference numeral 1 is a curtain rail fixed to a window frame or ceiling, etc., and a number of curtain runners (Fig. (not shown).

Reference numeral 2 denotes a stopper that is fitted and fixed to one end of the curtain rail 1, and a through hole 4 is provided in the center of the side of the mounting piece 3 that projects from the curtain rail 1 in an L shape.

Reference numeral 5 denotes a square rod-shaped female threaded body fixed to the mounting piece 3 of the stopper 2, with a screw hole 6 passing through the center thereof and communicating with the through hole 4.

Reference numeral 7 denotes a motor support member fitted to one end of the curtain rail 1. A pair of motor mounting pieces 9 extending downward are formed at the lower edge of the one end, and a pair of motor mounting pieces 9 are formed at the center of the motor mounting pieces 9. A through hole 11 is provided respectively.

Further, a screw hole 12 is provided on the upper surface of one end of the motor support member 7 by burring. j13 is a pulley support member whose upper part is bent horizontally and is screwed into the screw hole 12 of the motor support member 7, and a pair of pulleys protrudes in the direction of the curtain rail 1 from both side edges of the central part of the pulley support member. Two pulleys 15 and 16 are rotatably supported on the support piece 14.

A through hole 17 is provided in the center of the lower part of the pulley support member 13, and both lower side edges 18 extend to both sides and abut against the other end of the motor support member 7. Reference numeral 19 is a threaded rod whose diameter is reduced so that the base end 20 can be inserted into the through hole 17 of the pulley support member 13, and as shown in FIG. Female thread body 5
An operation knob 21 is attached to a base end portion 20 that is screwed into the screw hole 6 of the pulley support member 13 and protrudes outward from the through hole 17 of the pulley support member 13.

Then, by rotating the operating knob 21 to the right and screwing the threaded rod 19 into the female threaded body 5, the threaded lever 19 and the operating knob 21 are moved relative to the female threaded body 5 in the direction of arrow A in FIG. When pushed by the operating knob 21, the pulley support member 13 and the motor support member 7 are moved relative to the ten rail 1 in the same direction. Further, if the operating knob 21 is rotated to the left, the threaded rod 19 and the operating knob 21 are moved in the direction of arrow B in the figure with respect to the female threaded body 5, and the pulley support member 1
3 is pushed by a screw rod 19, so that the motor support member 7 moves relative to the curtain rail 1 in the same direction.
22 is a support shaft fitted into the pair of motor mounting pieces 9 of the motor support member 7; 23 is a motor support bracket formed by bending a rectangular plate at right angles near the center;
Support pieces 24 projecting upward from both side edges near the bent portion are rotatably supported by the support shaft 22 .

The top end of the motor support bracket 23 is the third
As shown in the figure, a pair of protruding pieces 25 are formed on both sides,
The upper part of the support plate 26 is fitted and fixed to the protruding piece 25. 27 is an adjustment button inserted into the protruding piece 25 from below. A nut 29 having a rectangular plate-shaped rotation stopper 28 fixed thereto is screwed onto the upper part of the protruding piece 25.
Then, with the rotation stopper 28 in contact with the outer surface of the motor support member 7, the adjustment bolt 27 is rotated in the direction of screwing into the nut 29, and the nut 29 rotates with respect to the motor support member 7. Since this is not possible, the adjustment bolt 27 is adapted to move upward relative to the motor support member 7. Reference numeral 30 denotes a coil spring as a biasing means that is inserted between the rotation stopper 28 and the protruding piece 25 so as to be wound around the adjustment bolt 27, and the curtain support bracket 23 is connected with the rotation stopper 28 as a fulcrum. It is designed to force the tip of the holder downward.

31 is a side piece of the motor support bracket 23 and the support plate 2;
An electric motor (hereinafter referred to as the motor) is attached between the output shaft 33 and 6 via a vibration-proof rubber 32, and is capable of forward and reverse rotation with an operation switch (not shown), and is equipped with a deceleration mechanism. passes through the support plate 26.

34 is a pulley fixed to the tip of the output shaft 33; 35 is a tilting lever rotatably supported on the output shaft 33 between the pulley 34 and the support plate 26; Auxiliary pulleys 36 and 37 are rotatably supported.

Further, the lower end of the tilting lever 35 is bent in the horizontal direction, and its tip is bent downward into a bifurcated shape to provide an engagement recess 35a. Reference numeral 38 denotes curtain drive wires (hereinafter referred to as wires) for opening and closing the curtain, and two wires 38 are stretched in parallel inside the curtain rail 1. At one end of the curtain rail 1, as shown in FIGS. As shown, it is suspended downward via pulleys 15 and 16, and its endless edge is hung on the pulley IJ34, and the same pulley 3
4 and are hung inside auxiliary pulleys 36 and 37, respectively.

The endless edge of the wire 38 is hung on a pulley (not shown) at the other end of the curtain rail 1, and the leading runner of a large number of runners supported on the curtain rail 1 is attached to the control switch. When the motor 31 is operated to rotate forward or backward, it is driven by a pulley 34 to draw out or fold the curtain. 39 is a snap switch attached to the lower end of the support plate 26, and the tip of the lever 40 projects into the engagement recess 35a of the tilting lever 35.

When the lever 40 is pressed and tilted in the direction of arrow C, the motor 3 rotates the pulley 34 in the direction of arrow E.
1 is cut off in priority to the operation switch operation, and when the pulley 34 is pressed and tilted in the direction of arrow D, the power supply to the motor 31 that rotates the pulley 34 in the downward direction of the arrow is given priority to the operation switch operation. It's becoming more and more severe. Numeral 41 is a regulating member for regulating the maximum tilting amount of the tilting lever 35, and both ends thereof are fixed to the support plate 26 by a shaft 42 with the tilting lever 35 being sandwiched between it and the support plate 26.

Next, a procedure for hanging the wire 38 on the pulley 34 in the motor mounting structure configured as described above will be explained.

When no wire is hung on the pulley 34, the motor 31 is rotated downward about the support shaft 22 due to its own weight and suspended diagonally.

In this state, first, rotate the operating knob 21 to screw the threaded rod 19 into the female threaded body 5 to the maximum extent, so that the motor support member 7 is moved most relative to the curtain rail 1 in the direction of arrow A. .

Next, after the two adjustment bolts 27 are unscrewed from the nut 29 to their maximum extent, the motor 31 is lifted upward to bring the upper ends of the adjustment bolts 27 into contact with the pulley support member 13 . At this time, the rotation stopper 28 of the nut 29 is in contact with the outer surface of the motor support member 7. Then, in this state, as shown in FIG. 3, the wire 38 is hung around the pulley 34 and the auxiliary pulley 1J36. Then, the motor 31 is suspended and supported by the support shaft 22 and the wire 38, and the wire 38 is tensioned by the weight of the motor 31. In order to further tension the wire 38 from this state, first screw the adjustment bolt 27 into the nut 29 and bring its upper end into contact with the pulley support member 13 as shown in FIG. Positioned in the vertical direction. At this time, a gap S is ensured between the lower end neck of the adjustment bolt 27 and the protruding piece 25, as shown in the figure. Next, rotate the operation knob 21 to the left to remove the motor support member 7 and the pulley support member 1.
3 is moved relative to the curtain rail 1 in the direction of arrow B in FIG. Then, the pulleys 15 and 16 move to the curtain rail 1.
In order to move away from the pulley 34, the wire 38 pulls up the protruding piece 25, and the coil spring 30 is compressed between the protruding piece 25 and the rotation stopper 28, forcing the protruding piece 25 downward. Ru. In this way, if the operating knob 21 is rotated until the biasing pressure of the coil spring 30 reaches a predetermined pressure, the wire 3
The hanging work in step 8 is completed. Therefore, in the motor mounting structure configured in this manner, the nut 29 and its rotation stopper 28 move up and down as the motor 31 moves up and down, and are movable relative to the motor support member 7. If the adjustment bolt 27 is unscrewed to the maximum extent with respect to 29, the motor 31 can be rotated significantly upward, and in this state, the wire 38 can be easily hung around the pulley 34 and the auxiliary pulleys 36 and 37. I can do it.

Then, from the state where the tip of the adjustment bolt 27 is in contact with the pulley support member 13, the adjustment bolt 27 is further tightened to the nut 29.
By adjusting the vertical position of the nut 29 by screwing it into the coil spring 30, the coil spring 30 can apply an arbitrary biasing force to the protruding piece 25 of the motor support bracket 23. The wire 38 can be set to an optimal tension. Further, if the wire 38 has slightly elongated due to aging, the motor 31 can automatically absorb the elongation by rotating downward about the support shaft 22 due to its own weight. Similarly, the biasing force of the coil spring 30 is applied to the wire 38.
can maintain the tension level almost constant.

The wire 38 extends further and the output shaft 33 side of the motor 31 tilts downward, causing the coil spring 30 to move against the protruding piece 25.
When the biasing force becomes weak, rotating the operating knob 21 to the left will move the motor support member 7 in the direction of arrow B in FIG. be done.

As a result, the coil spring 30 can be compressed again and its biasing force can be restored. Next, the operation of the automatic opening/closing curtain to which the motor 31 is attached with the above structure will be explained.

When pulling out the curtain from the folded state, press the corresponding operation switch to turn on the power to the motor 31 and drive the pulley 1J34 to rotate in the direction of arrow E in FIG. The curtain is pulled out by the wire 38. When the curtain is pulled out to the maximum extent and the leading runner comes into contact with the stopper, or when the movement of the runner is blocked by some obstacle, the movement of the wire 38 in the same direction is stopped, so the auxiliary pulley 36 parts of wire 38 are poofuri 34
The tilting lever 35 is tensioned by the torque of
rotated in the direction. Then, the lever 40 of the snap switch 39 is pressed and tilted in the direction of the arrow C in the figure, and the power to the motor 31 that rotates the pulley 34 in the direction of the arrow E is immediately cut off regardless of the operation of the operation switch. If you want to move the curtain in the same direction again after removing the obstacle, momentarily press the operation switch for folding the curtain and slightly rotate the pulley 34 in the direction of arrow F. The tilt lever 35 is rotated back to its original position, and the lever 40 of the snap switch 39 is also returned to its original position. After this, by pressing the operation switch, pulley 3
4 again in the direction of arrow E to pull out the curtain. Further, when folding the curtain, the pulley 34 is rotated in the direction of arrow F in FIG. 3 by pressing the operation switch, and the curtain is folded by the wire 38 driven accordingly.

When the curtain is completely folded or when there is an obstacle, the tilting lever 35 is rotated in the direction of arrow H in the figure, and the power to the motor 31 that rotates the pulley 34 in the direction of arrow F is turned on. Cut off. In this manner, in the embodiment of the motor mounting structure as described above, when the movement of the wire 38 is prevented, the motor 31 is operated in priority to the operation of the operation switch.
Since the power supplied to the motor 31 is automatically cut off, burnout of the motor 31 can be prevented.

Furthermore, in the embodiment described above, the wire 38 is tensioned by the weight of the motor 31 and the biasing force of the coil spring 30, so that the wire 38 is suddenly prevented from moving.
If the tension of the wire 3 suddenly increases, the shock is absorbed by the coil spring 30, so the wire 3
8 can reduce fatigue and extend lifespan.

Effects As detailed above, by making the nut 29, which serves as the fulcrum of the coil spring 30 that biases the support bracket 23 of the electric motor 31 of the present invention downward, movable up and down with respect to the curtain rail 1, the curtain drive wire 38 can be easily hung on the pulley 34, and by bringing the tip of the adjustment bolt 27 into contact with one end of the curtain rail 1 and adjusting the vertical position of the nut 29 as appropriate, the curtain drive wire 38 can always be kept at the optimal tension level. can be held.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing the mounting structure of a curtain opening/closing electric motor embodying the present invention, FIG. 2 is a side view of its main parts, and FIG. 3 is a side view thereof.

Claims (1)

[Claims] 1. An electric motor 31 is attached to one end of the curtain rail 1 so as to be able to rotate up and down using its base end as a fulcrum, and is suspended from one end of the curtain rail 1 via pulleys 15 and 16. In the mounting structure of a curtain opening/closing motor in which a curtain drive wire 33 is hung on an output shaft 33 at the tip of the motor 31 via a pulley 34, the motor 31 is attached to the curtain rail 1 via a support bracket 23, and the motor 31 is attached to the curtain rail 1 via a support bracket 23. A bolt 27 is inserted from below into the tip of the support bracket 23 located above, and the tip of the bolt 27 is provided so as to be able to come into contact with one end of the curtain rail 1. A nut 29 is screwed onto the adjustment bolt 27. A coil spring 30 serves as a fulcrum and urges the tip of the support bracket 23 downward.
A mounting structure for an electric motor for opening and closing curtains, characterized by being provided with. 2. The mounting structure for a curtain opening/closing motor according to claim 1, wherein the nut 29 has a rotation stopper 28 with respect to the curtain rail 1.