JP2540304Y2 - Moving device for shutter winding wheel axis - Google Patents

Description

[Detailed description of the invention] [Industrial application field] In the present invention, the shutter curtain is always unwound and wound at a fixed position regardless of the increase or decrease in the winding diameter of the shutter curtain accompanying the unwinding and winding of the shutter curtain. The present invention relates to a device for moving a winding wheel shaft of a shutter as described above.

[Problems to be solved by conventional techniques and devices]

In a conventional shutter, a take-up wheel shaft for winding up the shutter curtain is fixed at a fixed position. Therefore, the unwinding / winding position of the shutter curtain moves by increasing or decreasing the diameter of the shutter curtain as the shutter curtain opens and closes. In contrast, the shutter curtain unwinding opening of the shutter case that houses the take-up wheel axle is generally just below the outer circumference when the shutter curtain reaches the maximum winding diameter, so the shutter curtain is unwound and the winding diameter is reduced. As the number of the shutter curtains decreases, there is a problem that the shutter curtain rubs the opening of the shutter case to generate a sound or scratches the shutter curtain.

The present invention has been made in view of the above-described drawbacks of the conventional shutter, and has been made to solve the problem.The shutter curtain is always fixed at a fixed position regardless of the increase or decrease in the winding diameter due to the unwinding of the shutter curtain. It is an object of the present invention to provide a moving device for a take-up wheel shaft of a shutter which can be unwound and wound.

[Means for solving the problem]

In order to achieve the above object, the present invention engages a pinion gear driven forward and reverse by a motor with a horizontally movable rack gear rotatably supporting a take-up wheel shaft of a shutter curtain, and a shutter unwinding opening of a shutter case and a shutter. Feedback of the droop length from the unwinding opening of the shutter curtain detected by the distance measurement sensor provided on the curtain seat plate to the drive motor of the pinion gear, the winding diameter of the shutter curtain accompanying the unwinding and winding of the shutter curtain. By moving the take-up wheel axis horizontally back and forth in response to increase or decrease, the shutter take-up and take-up position of the shutter curtain is always at a fixed position. .

[Action]

As described above, if the diameter of the winding is reduced by unwinding the shutter curtain, the winding wheel shaft moves forward by that amount, and the shutter curtain is unwound from a fixed position. As it increases, the take-up wheel axle is retracted and the shutter curtain is similarly wound up from a fixed position. Therefore, the disadvantage that the shutter curtain rubs the unwinding opening of the shutter case to make a sound or scratches the shutter curtain is eliminated.

〔Example〕

Hereinafter, the present invention will be described in detail based on one embodiment shown in the drawings.

FIG. 1 is a side view showing the state of the device of the present invention when the shutter is fully opened, FIG. 2 is a side view showing the state of the device of the present invention when the shutter is fully closed, and FIG. FIG. 4 is a perspective view of the moving member.

In the figure, 1 is a shutter, 2 is a shutter case accommodating the shutter 1, 3 is a winding wheel having a plurality of winding wheels mounted on a winding wheel shaft 4, 5 is a winding wheel 3.
The end of the take-up wheel shaft 4 is pivotally supported by a bearing portion 7 of a moving member 6.

The moving member 6 is formed by integrally forming a guide portion 8 having long guide holes 8a, 8a symmetrically on both sides of the bearing portion 7 with a rack gear 9, and is implanted in a side plate 2a of the shutter case 2 and It is supported by two pins 10, 10 inserted into the guide holes 8a, 8a, and can be moved in the horizontal direction. The rack gear 9 is attached to the side plate 2a of the shutter case, and includes a driving motor 11 such as a stepping motor and a servo motor.
And meshed with a pinion gear 12 driven forward and reverse. The shutter curtain unwinding opening 13 of the shutter case 2
At the time, and on the seat plate 5a of the shutter curtain 5, infrared,
A pair of distance measurement sensors 14 and 14 ′ using ultrasonic waves or the like are provided, and a hanging length of the shutter curtain 5 hanging from the shutter curtain unwinding opening 13 is detected, and this detection value is sent to the drive motor 11 of the pinion gear 12. By feeding back and moving the rack gear 9 forward and backward, the take-up wheel shaft 4 is controlled to move forward and backward in the horizontal direction in accordance with the increase and decrease of the winding diameter of the shutter curtain 5 accompanying the unwinding and winding of the shutter curtain 5.
The unwinding position of the shutter curtain 5 is always located immediately above the shutter curtain unwinding opening 13.

In the above-described configuration, when the shutter curtain 5 is fully wound, the winding diameter of the shutter curtain 5 wound on the winding wheel shaft 4 is the maximum diameter, and at this time, the shutter curtain 5 droops from the unwinding opening 13. The length is 0, and thus the distance measured by the distance measuring sensors 14 and 14 'is 0, and the winding wheel shaft 4 is moved from the unwinding position A of the shutter curtain 5 immediately above the unwinding opening 13 of the shutter curtain 5. It has receded to the maximum diameter in the horizontal direction (FIG. 1). When the shutter curtain 5 is unwound to close, the distance measuring sensors 14 and 14 'detect an increase in the drooping length from the unwinding opening 13 of the shutter curtain 5 at any time, and this detected value is used as a pinion gear. The drive motor 11 is fed back to rotate the drive motor 11 to advance the rack gear 9 meshing with the pinion gear 12 in the unwinding position A of the shutter curtain 5 by an amount corresponding to the reduction in the winding diameter of the winding wheel 3. It compensates for the unwinding position A of the curtain 5 moving backward. When the shutter curtain 5 is completely closed and the winding diameter becomes the minimum diameter, the winding wheel shaft 4
Comes to a position where the shutter curtain 5 is advanced to the unwind-in position A (FIG. 2).

When the shutter curtain 5 is to be rewound from the entire unwinding position, contrary to the above, the distance measuring sensors 14 and 14 'sequentially detect a decrease in the droop length from the unwinding opening 13 of the shutter curtain 5, and this detection is performed. The value is fed back to the drive motor 11 of the pinion gear 12, the drive motor 11 is rotated in the reverse direction, and the rack gear 9 is retracted from the unwind-in position A of the shutter curtain 5 by an amount corresponding to the increase in the winding diameter of the winding wheel 3. When the curtain 5 is fully opened and the winding diameter of the winding wheel shaft 4 reaches the maximum diameter, the winding wheel shaft 4 is fully retracted from the unwinding and winding position A of the shutter curtain 5 as shown in FIG. Return to Therefore, regardless of the increase or decrease of the winding diameter of the shutter curtain 5 due to the unwinding and winding of the shutter curtain 5, the unwinding and winding position A of the shutter curtain 5 is adjusted to a fixed position, and the shutter of the shutter case 2 at the fixed position is adjusted. Exit of curtain 5
It is possible to prevent the shutter curtain 5 from rubbing the shutter curtain 13 and generating a sound, and prevent the shutter curtain 5 from being scratched.

[Effect of the invention]

As described above, according to the present invention, a pinion gear driven forward and reverse by a motor meshes with a horizontally movable rack gear that supports a take-up wheel shaft of a shutter curtain, and a shutter outlet of a shutter case and a shutter curtain. The length of droop from the unwinding opening of the shutter curtain detected by the distance measurement sensor provided on the seat plate is fed back to the drive motor of the pinion gear to increase or decrease the winding diameter of the shutter curtain accompanying the unwinding of the shutter curtain. By controlling the take-up wheel axis to move forward and backward in the horizontal direction corresponding to the above, the unwinding position of the shutter curtain is always maintained at a constant position regardless of the increase or decrease in the winding diameter of the shutter curtain. Rub the opening of the shutter case to make a sound, In which an effect that is inconvenient to give them abrasions coater curtain is eliminated.

[Brief description of the drawings]

The drawings show an embodiment of the present invention, FIG. 1 is a side view showing the state of the present invention device when the shutter is fully opened, and FIG. 2 is a side view showing the state of the present invention device when the shutter is fully closed. FIG. 3 is a front view of a main part of the device of the present invention, and FIG. 4 is a perspective view of a moving member. 1 ... shutter, 2 ... shutter case, 2a ... side plate, 3 ... winding wheel, 4 ... winding wheel shaft,
5 Shutter curtain, 5a Seat plate, 6 Moving member, 7 Bearing part, 8 Guide part, 8a Guide hole, 9 Rack gear, 10 Pin, 11 Pinion gear Drive motor, 12 Pinion gear, 13 Shutter curtain outlet, 14, 14 'Distance measuring sensor, A
... The unwinding position of the shutter curtain.

Claims (1)

(57) [Scope of request for utility model registration] A shutter gear is supported by a horizontally movable rack gear rotatably supporting a take-up wheel shaft. A pinion gear driven forward and reverse by a motor is meshed with the rack gear. Feedback length from the unwinding opening of the shutter curtain detected by the distance measurement sensor provided in the feedback to the drive motor of the pinion gear, corresponding to the increase or decrease of the winding diameter of the shutter curtain accompanying the unwinding of the shutter curtain. An apparatus for moving a take-up wheel shaft of a shutter, characterized in that the take-up / retract position of the shutter curtain is always kept constant by controlling the forward / backward movement of the take-up wheel shaft in the horizontal direction.