JPS629323B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a mounting structure for an electric motor that drives an electric curtain.

PRIOR ART In the past, various mounting structures for electric motors that drive electric curtains have been proposed, and in Japanese Utility Model Publication No. 45-31340 and Japanese Utility Model Publication No. 46-18680, devices for mounting the electric motor on the floor or wall surface, etc. have been proposed. There is. However, such mounting devices require a space to be installed on the floor or wall, and require a complicated adjustment mechanism to keep the curtain drive wire at the optimal tension. Adjustments also had to be made manually.

Also, Publication No. 39-32146 and Publication No. 48-
Although Japanese Patent No. 13393 proposes a device for suspending and fixing an electric motor to one end of a curtain rail, it is necessary to manually adjust the tension of the curtain drive wire.

Purpose This invention was made in order to eliminate the drawbacks of the conventional motor mounting structure for automatic opening/closing curtains as described above, and its purpose is to attach the motor to one end of the curtain rail. Another object of the present invention is to provide a motor mounting structure that eliminates the need to secure a space for mounting the motor on a wall surface, etc., and that can automatically adjust the tension of the curtain drive wire to the optimum level at all times.

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 an attachment piece 3 that projects in an L shape from the curtain rail 1. 5 is stoppa 2
It is a rectangular rod-shaped female threaded body fixed to the mounting piece 3 of
It communicates with

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.

Reference numeral 13 denotes 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 from both side edges of the central part in the direction of the curtain rail 1. 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 denotes 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. An operation knob 21 is attached to a base end portion 20 that is screwed into the screw hole 6 of the female threaded body 5 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 curtain rail 1 in the same direction. In addition, the operation knob 21
If you rotate it to the left, the threaded rod 1 will be attached to the female threaded body 5.
9 and the operating knob 21 are moved in the direction of arrow B in the figure, the pulley support member 13 is pushed by the threaded rod 19, and the motor support member 7 is moved relative to the curtain rail 1 in the same direction.

Reference numeral 22 denotes a support shaft fitted into a pair of motor mounting pieces 9 of the motor support member 7, and 23 is a motor support bracket formed by bending a rectangular plate at a right angle near the center; Support pieces 24 projecting upward from both side edges near the support shaft 22
is rotatably supported. As shown in FIG. 3, a pair of protruding pieces 25 are formed on both sides of the upper end of the motor support bracket 23, and the upper part of a support plate 26 is fitted and fixed to the protruding pieces 25.

Reference numeral 27 is an adjustment bolt inserted through the protruding piece 25 from below, and a nut 29 having a square plate-shaped rotation stopper 28 fixed thereto is screwed into the upper position of the protruding piece 25. If the adjustment bolt 27 is rotated in the direction of screwing into the nut 29 with the rotation stopper 28 in contact with the outer surface of the motor support member 7, the nut 29 cannot rotate relative to the motor support member 7. Therefore, the adjustment bolt 27 is configured to move upward relative to the motor support member 7. Reference numeral 30 denotes a coil spring as a biasing means that is interposed between the detent 28 and the protruding piece 25 so as to be wound around the adjustment bolt 27, and the coil spring 30 rotates the motor support bracket 23 with the detent 28 as a fulcrum. The tip is biased downward.

Reference numeral 31 denotes an electric motor (hereinafter referred to as motor) attached between the side piece of the motor support bracket 23 and the support plate 26 via a vibration isolating rubber 32, and can be rotated forward or backward by an operation switch (not shown). In addition, a speed reduction mechanism is installed inside, and its output shaft 33 passes through the support plate 26. 34 is a pulley fixed to the tip of the output shaft 33, 35 is the pulley 34
It is a tilting lever rotatably supported by the output shaft 33 between the support plate 26 and the support plate 26, and a pair of auxiliary pulleys 36 and 37 are rotatably supported on the upper part of the tilting lever. 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,
Its endless edge is hung on a pulley 34 and above the pulley 34 and on the inside of auxiliary pulleys 36 and 37, respectively. And this wire 3
8 has its endless edge hung on a pulley (not shown) at the other end of the curtain rail 1,
The leading runner of a large number of runners is attached to the curtain rail 1, and when a motor 31 is rotated forward or reverse by operating an operating switch, it is driven by a pulley 34 to pull out or fold the curtain. .

Numeral 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 power to the motor 31 that rotates the pulley 34 in the direction of arrow E is cut off in priority to the operation of the operating switch, and the lever 40 is pressed in the direction of arrow D. When the pulley 34 is tilted, the power to the motor 31 that rotates the pulley 34 in the direction of arrow F is cut off in priority to the operation of the operating switch. 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 the support plate 26 and the tilting lever 35.

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 unscrewing the two adjustment bolts 27 to the nut 29 as much as possible, the motor 31
Lift upward to bring the upper end of the adjustment port 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. In this state, the wire 38 is connected to the pulley 34 and the auxiliary pulley 36 as shown in FIG.
Hang it on. Then, the motor 31
The motor 31 is suspended and supported by a 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, the operating knob 21 is rotated to the left to move the motor support member 7 and the pulley support member 13 relative to the curtain rail 1 in the direction of arrow B in FIG. Then, since the pulleys 15 and 16 move away from the curtain rail 1, the pulley 34 is pulled up by the wire 38 and the protruding piece 25 is moved upward.
The coil spring 30 is connected between the rotation stopper 28 and the
is compressed, and the protruding piece 25 is urged downward.
In this way, by rotating the operating knob 21 until the biasing pressure of the coil spring 30 reaches a predetermined pressure, the work of hanging the wire 38 is completed.

Therefore, in the motor mounting structure configured in this way, the nut 29 and its rotation stopper 2
8 moves up and down as the motor 31 moves up and down, and is freely movable with respect to the motor support member 7. Therefore, if the adjusting bolt 27 is unscrewed to the maximum extent from the nut 29, the motor 31 can be moved upward by a large amount. In this state, the wire 38 can be easily hung around the pulley 34 and the auxiliary pulleys 36 and 37. Then, when the tip of the adjustment bolt 27 is brought into contact with the pulley support member 13, the adjustment bolt 27 is further screwed into the nut 29 to adjust the vertical position of the nut 29. Since an arbitrary biasing force can be applied to the wire 25 by the coil spring 30, the tension of the wire 38 can be set to an optimal degree in conjunction with the weight of the motor 31.

Furthermore, if the wire 38 has slightly elongated due to aging, the motor 31 can automatically absorb the elongation by rotating downward around the support shaft 22 due to its own weight. The biasing force of the coil spring 30 similarly acts on the wire 38 to keep the tension approximately constant.

When the wire 38 stretches and the output shaft 33 side of the motor 31 tilts downward, and the biasing force of the coil spring 30 against the protruding piece 25 becomes weak,
When the operating knob 21 is rotated to the left, the motor support member 7 moves in the direction of arrow B in FIG. 2, so that the pulley 34 is pulled up by the wire 38 and the protruding piece 25 is moved upward. 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 move the pulley 34 to the third position.
The curtain is driven to rotate in the direction of arrow E in the figure, and the curtain is pulled out by the wire 38 that is driven accordingly. 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 of the wire 38 is tensioned by the torque of the pulley 34, and the tilting lever 35
is rotated in the direction of arrow G in FIG. Then, the lever 40 of the snap-on 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 operating switch. If you want to move the curtain in the same direction again after removing the obstacle, press the operation switch for folding the curtain momentarily and rotate the pulley 34 slightly in the direction of arrow F. The tilting 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, if the operation switch is pressed, the pulley 34 will be moved to the arrow E again.
You can pull out the curtain by rotating it.

Further, when folding the curtain, the pulley 34 is driven to rotate 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 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 momentarily cut off.

As described above, in the embodiment of the motor mounting structure as described above, when the movement of the wire 38 is blocked, the power supplied to the motor 31 is automatically cut off in priority to the operation of the operation switch. motor 3
1 can be prevented from burning out.

Further, in the embodiment described above, the wire 38 is connected to the motor 3.
Since the wire 38 is under tension due to its own weight and the biasing force of the coil spring 30, if the movement of the wire 38 is suddenly stopped and the tension of the wire 38 increases rapidly, the impact will be applied to the coil spring 3.
Since the wire 38 is absorbed by zero, fatigue of the wire 38 can be reduced and its life can be extended.

Effects As detailed above, in this invention, there is no need to secure a space for installing the electric motor 31 on the floor or wall surface, and by hanging the curtain drive wire 38 on the pulley 34, the electric motor 31 can be attached to the curtain rail 1. It can be easily attached to one end, and the curtain driving wire 38 can be kept at a substantially constant tension by using the weight of the electric motor 31, which is an excellent effect.

[Brief explanation of the drawing]

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 sectional view of its main parts, and FIG. 3 is a side view thereof. Curtain rail...1, pulley...15,16,
Biasing means...30, electric motor...31, output shaft...
33, Pulley...34, Curtain drive wire...
38.

Claims (1)

[Claims] 1 In an electric curtain that drives the curtain by driving the curtain drive wire with an electric motor, the electric motor 3
1 is supported vertically and rotatably at one end of the curtain rail 1 by a support shaft 22, and a curtain drive wire 38, which is suspended from one end of the curtain rail via pulleys 15 and 16, is connected to the end of the electric motor 31. Output shaft 3
3. A mounting structure for a curtain opening/closing electric motor, characterized in that it is hung on a pulley 34 fixed to a curtain.