JPH0426640Y2 - - Google Patents

Description

[Detailed explanation of the idea] 【Technical field】

The present invention relates to a shutter-type shutter device used for windows of houses, etc., and relates to a technique for accurately controlling the amount of extension and winding of the shutter.

[Background technology]

In this type of motor-driven shutter type shutter device, when the shutter 2 is moved out or rolled up by driving the motor 11, the shutter 2 is
It is necessary to automatically stop the motor 11 when the winding is completely closed or winding is completed. Conventionally, this method involved detecting the position of the shutter 2 and controlling the stop of the motor 11.
is a flexible connection of vanes 1, and due to its flexible nature, it hangs down from its normal position (broken line) as shown in Figure 6, making it difficult to accurately detect the position and making it difficult to precisely control the motor stop. Nakatsuta.

[Purpose of invention]

The present invention was developed in view of the above-mentioned technical background, and its purpose is to accurately control the stop of the motor during shutter feeding and winding, and to provide a mechanism that To provide a shutter type storm door device which is compact and can accurately control the stop of a motor by preventing the shutter from sagging especially when the shutter is extended.

[Disclosure of the invention] The shutter type storm door device of the present invention has a plurality of blade plates 1 flexibly connected to form a shutter 2, and the shutter 2 is rotated by a motor 11 on the circumferential surface of a winding shaft 3. In a shutter-type storm door device that is retractably attached to a motor, a pair of limit switches 25 and 26 are mounted on a support bar 14 whose base end is fixed to a fixed plate 13 on the side of the motor.
At the same time, an operating element 22 is attached so as to be movable left and right along a screw shaft 21 arranged parallel to the support bar 14, and the operating element 22 turns on and off the pair of limit switches 25 and 26. A motor control mechanism configured to turn off the motor 11 and stop the motor 11 is provided in the winding shaft 3 in which the shaft 6 at one end is rotatably supported by a bearing 7 together with the motor 11, In addition, the tip of the rod 4, which is urged to protrude to the outer circumference by a spring 5 and is slidably inserted between the inner circumference side and the outer circumference side of the winding shaft 3, is attached to the attachment side of the shutter 2. The shutter 2 is pushed up toward the outer periphery of the winding shaft 3 by elastically protruding toward the lower surface at the end, and by detecting the rotational speed of the motor 11, 11, the control operation can be performed with high precision without being affected by the properties of the shutter 1, and the motor 11 and motor control mechanism A can be housed within the winding shaft 3. This allows for a mechanically compact configuration. Moreover, by making the tip of the rod 4 elastically protrude toward the lower surface of the attachment side end of the shutter 2, the shutter 2 is pushed up toward the outer circumferential side of the winding shaft 3. When unrolling,
This prevents the shutter 2 from hanging down, so that the extended position of the shutter 2 can be detected accurately and the motor can be stopped with high precision. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The winding shaft 3 is drum-shaped and is usually arranged inside a frame or inside a wall above an opening such as a window. Shutter 2 for covering openings such as windows, etc.
Engaging pawls 8 and engaging grooves 9 are provided on the upper and lower edges of the horizontally long blade plate 1, respectively, and the engagement of the engaging pawls 8 and the engaging grooves 9 allows the plurality of blade plates 1 to be connected to each other. It is formed into a plate shape that can be flexibly connected and rolled up. The upper end of the shutter 2 is attached to the circumferential surface of the winding shaft 3, and the lower end thereof is arranged to pass through the shutter outlet 10. As shown in FIG. 2, a shaft 6 at one end of the winding shaft 3 is rotatably supported by a bearing 7, and a rod 4 is attached to the winding shaft 3 at this end on the inner peripheral side. The rod 4 is slidably inserted through the outer circumferential side, and the rod 4 is urged to protrude toward the outer circumferential side by a spring 5. The tip of the rod 4 elastically protrudes toward the lower surface of the attachment side end of the shutter 2, so that the rod 4 can push the shutter 2 toward the outer circumference. As shown in FIG. 3, when the shutter 2 is wound around the outer periphery of the winding shaft 3, the rod 4 is pushed in elastically by the force with which the shutter 2 is wound, and the shutter 2 is It is rolled up small. On the other hand, as shown in Fig. 1, when the shutter 2 is extended, the shutter 2 is free, so the rod 4 protrudes as before, and its elastic force pushes up the attachment side end of the shutter 2. , which prevents the shutter 2 from drooping. FIG. 4 shows a motor control mechanism for detecting when the shutter 2 is completely closed or when winding is completed and stopping the motor 11. That is, the rotation speed of the motor 11 is detected and the rotation speed of the motor 11 is determined based on the rotation speed when the shutter 2 is closed.
This is a method to stop the At the opposite end of the winding shaft 3 to the above-mentioned end, the end of the winding shaft 3 is rotatably supported by a stationary plate 13 via a bearing 12. From the center of this fixed platen 13 is the winding shaft 3.
A support bar 14 is made to protrude inward,
A fixing plate 15 is provided at the tip of the support bar 14. A motor 11 is fixed to the fixed plate 15, and a clutch 17 fixed to the inner circumference of the winding shaft 3 is connected to a rotating shaft 16 of the motor 11. By rotating the motor 11, the winding shaft is rotated. 3 can be rotated. Further, an internal gear 18 is fixed to the inner periphery of the winding shaft 3.
Shaft 1 projected from fixed platen 13 into take-up shaft 3
9 holds a long gear 20 rotatably,
This elongated gear 20 is long in the direction of the shaft 19, and its end meshes with the internal gear 18. On the other hand, a screw shaft 21 is projected from the fixed plate 15 in parallel with the elongated gear 20, and a female thread 23 provided on the inner circumference of the actuator 22 is screwed into this screw shaft 21. When the actuator 22 rotates, the operating element 22 moves in the thrust direction on the screw shaft 21 as the actuator 22 rotates. Moreover, a gear 24 is formed on the outer periphery of the actuator 22, and this gear 24
4 meshes with the elongated gear 20, but the meshing direction is only in the rotational direction and is free in the axial direction of the screw shaft 21, so that they can slide against each other. Therefore, when the motor 11 is driven to rotate the winding shaft 3, the elongated gear 20 rotates due to engagement with the internal gear 18, and the operating element 22 rotates due to engagement between the elongated gear 20 and the gear 24. When the actuator 22 is rotated, the actuator 22 moves on the screw shaft 21 because the female thread 23 is screwed into the screw shaft 21. The moving distance of the actuator 22 is exactly proportional to the rotation speed of the motor 11. A pair of limit switches 2 are provided on the upper surface of the support bar 14 in correspondence with the movement space of the actuator 22.
5 and 26 are attached, and when the actuator 22 moves, it hits the limit switch 25 or 26, and the rotation speed of the motor 11 can be detected via the position of the actuator 22. That is, when the shutter 2 is extended, when the motor 11 rotates a predetermined number of revolutions necessary to completely close the shutter 2, one limit switch 25 is turned on by the moving actuator 22, and the motor 11 is stopped. . At this time, since the shutter 2 is reliably prevented from drooping as described above, there is no deviation between the predetermined rotational speed of the motor 11 and the fully closed state of the shutter 2, allowing accurate operation. This is possible. Conversely, when winding up the shutter 2, when the motor 11 is reversely rotated, the shutter 2 is wound around the winding shaft 3, and at the same time the actuator 22 moves to the opposite side, and the other limit switch 26 moves to the opposite side. 2
2, the motor 11 is stopped. Therefore, when the shutter 2 is wound, the winding shaft 3 is positioned at a predetermined angle, and the shutter 2 is
There is no possibility of misalignment when the blade is fed out. The limit switches 25, 26 and the motor 11 are connected as shown in FIG. 5, and the limit switches 25, 26 control forward rotation, reverse rotation, or stop of the motor 11. BL is the brake coil. The limit switches 25 and 26 can be adjusted in position in the axial direction of the support bar 14. This is because it is necessary to adjust the positions of the limit switches 25 and 26 depending on the installation location and construction variations.

[Effect of the idea]

The present invention is configured as described above and has the following effects. That is, since the horizontal movement distance on the screw shaft of the actuator for operating the pair of limit switches mounted on the support bar to stop the motor is proportional to the rotational speed of the motor, depending on the movement distance, It is possible to detect the rotational speed of the motor during the feeding and winding operations of the shutter, and the motor control mechanism that controls the motor operation is rotatably supported along with the motor by a bearing at one end. Providing it within the take-up shaft has the advantage that it is possible to perform stop control operations of the motor with high precision, and also to have a mechanically compact configuration. By making the tip of the rod elastically protrude toward the lower surface of the attachment end of the shutter, the shutter is pushed up toward the outer periphery of the winding shaft. This prevents the shutter from hanging down, and therefore, when closing the shutter, the shutter may not be completely closed and a gap may occur, or the motor may not operate even though the shutter has already been extended. There is no risk of a failure in which the system does not stop. Furthermore, the fact that the tip of the rod pushes up the shutter toward the outer periphery of the winding shaft prevents the shutter from sagging and allows the motor control mechanism to control the motor with precision, thereby improving the winding operation of the shutter. Since the take-up shaft can be stopped accurately even when the shutter is unwinding, the take-up shaft can be stopped accurately at a predetermined rotation angle, and the initial position can be set reliably when the shutter is unwinding. It has excellent features. Furthermore, since the motor control mechanism is installed in the winding shaft along with the motor, it can be installed simply by securing a space between the winding shaft and the shutter that winds the winding material around the winding shaft. Since the installation space is small, there are few restrictions on the installation location.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the present invention when the shutter is unrolled, Fig. 2 is a partially broken sectional view of the same winding shaft as above, Fig. 3 is a side view when the shutter is being wound up, and Fig. 4 The figure is a partially broken sectional view of the winding shaft same as above, FIG. 5 is a circuit diagram showing a control method of the motor 11 same as above, and FIG.
is a blade plate, 2 is a shutter, 3 is a winding shaft, 4 is a rod, 5 is a spring, 6 is a shaft, 7 is a bearing, 11 is a motor, 14 is a support bar, 15 is a fixed plate, 21 is a screw shaft, 22 1 is an operating element, 25 and 26 are micro switches, and 1 is a motor control mechanism.

Claims (1)

[Scope of utility model registration request] In a shutter-type shutter device in which a plurality of blade plates are flexibly connected to form a shutter, and the shutter is attached to the circumferential surface of a winding shaft that is rotationally driven by a motor so as to be able to be wound up, the motor Attach a pair of limit switches to the side fixing plate on the support bar whose proximal end is fixed, and
An operating element is mounted so as to be movable left and right along a screw shaft parallel to the support bar, and the operating element turns on and off the pair of limit switches to stop the motor. A motor control mechanism configured as shown in FIG. The shutter can be fixed by elastically protruding the tip of a rod that is slidably inserted between the side and the outer peripheral side toward the lower surface of the attachment side end of the shutter. A shutter type shutter device that is pushed up toward the outer periphery of the take-up shaft.