JPH0431994Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial fields of application This invention is applicable to blinds with multiple slats, accordion curtains with bellows-shaped sheets, and shields for window openings such as rollable blinds and flexible screen doors. The invention also relates to a stopping device for a shield such as an awning, which allows sheets to be taken in and out by bending or extending the arm.

Prior art Utility Model Publication No. 52-7716 as a stop device for conventional blinds that can be rolled up using a motor.
The invention described in the publication is disclosed. This invention wraps the lifting rope by the rotation of the motor,
Alternatively, it has a mechanism that raises and lowers the blind by feeding it out, and also detects the upper and lower limits and stops the rotation of the motor to prevent damage to parts.

The detection mechanism includes a male screw threaded around the outer periphery of a shaft rotated by a motor, a movable element that is screwed onto the outer periphery of the male thread and moves back and forth in the axial direction, and limit switches placed on the left and right sides of the shaft in the longitudinal direction. The motor stops rotating when the child comes into contact with it.

Problems to be solved by this invention The problem with the above-mentioned invention is that because the limit switches are placed on the left and right sides in the longitudinal direction of the shaft, the lifting device itself has to become larger in the axial direction. With this configuration, there is no problem if the blind is wrapped around the lifting cable, but if it is wrapped over almost the entire length of the winding shaft, such as a bamboo blind, the location of the limit switch may be difficult. This poses a problem, and it may become impossible to store it, for example, in the case of storing it inside a shoji frame or window frame.

Means for Solving the Problems The shield stopping device according to this invention includes a motor consisting of a horizontally fixed support shaft and a rotatable motor body having a threaded portion on its circumference; A movable body that engages with the threaded portion and is movable in the axial direction of the support shaft along the rail bar 35, the tip of which moves together with the movable body is bent horizontally in a direction intersecting the axis of the support shaft. a guide bar, a rocking arm whose base end is pivotally supported on a support shaft and can swing left and right while being guided by the guide bar, a detector that detects displacement of the rocking arm, and a winding that rotates together with the motor body. Consists of an axis.

The rotation of the motor body moves the guide bar together with the movable body, and the guide bar brings the swinging arms into contact with the left and right detectors.

This contact controls the motor to stop rotating.

The amount of rotation of the motor body is converted into the swinging of the swing arm in the width direction, and is detected by detectors placed on the left and right sides of the support shaft in the width direction, making the device compact.

Embodiment Hereinafter, this invention will be explained in detail based on an embodiment shown in the drawings.

The example is a case where a lifting device for an opening shield is implemented on a shoji B which has a built-in blind A as a shield.

Figures 3 and 4 are longitudinal sectional views of a window equipped with a shoji B with a built-in blind A, respectively.
FIG. In the figure, C is a window frame, and an upper frame 1, left and right vertical frames 2, 2, and a lower frame 3 are framed in a rectangular shape. Two rails 4, 4 are bored in parallel to the upper and lower frames 1, 3 of this window frame C, respectively, and indoor and outdoor shoji screens B, B are attached to these rails 4, 4 so as to be able to slide in different directions.

The shoji B has an upper stile 5, left and right vertical stile 6, 6, and a lower stile 7 assembled into a rectangular shape. A rail fitting groove 8 is formed in the longitudinal direction on the upper surface of the upper stile 5, and a panel frame fitting groove 9 is formed on the lower surface on the indoor side in the viewing direction, and a panel fitting groove 10 is formed on the outdoor side at a predetermined interval. There is. A rail fitting groove 8 is provided on the bottom surface of the lower stile 7 in the longitudinal direction.
is formed, and the door wheel 11 is rotatably arranged. On the upper surface of the lower stile 7, a panel frame fitting groove 9 is formed on the indoor side in the viewing direction, and a panel fitting groove 10 is formed on the outdoor side at a predetermined interval. A panel fitting groove 10 is formed on the outdoor side of the vertical stile 6 in the perspective direction, and on the indoor side, an abutment piece 12 is provided slightly protruding toward the outdoor side from the indoor side end. Upper stile 5, left and right stile 6, 6 and lower stile 7
A panel-shaped glass plate 14 whose peripheral edge is held by a gasket 13 is fitted into each panel fitting groove 10 . In addition, a panel frame 16, which is a glass plate 14 which is a panel and is surrounded by a frame 15, is mounted in the panel frame fitting grooves 9, 9 of the upper and lower frames 5, 7 in a sliding manner. The left and right vertical frames 15, 15 of the panel frame 16 are the contact pieces 12, 12 of the left and right vertical frames 6, 6.
It is located on the side of the room.

A blind A is attached so as to be movable up and down between the panel frame 16 and the glass plate 14 which are arranged in parallel inside and outside the room of the shoji B as described above. A blind case 17 is attached to the lower surface of the upper stile 5 between the panel frame fitting grooves 10. The blind A has lifting cables 20, 2 on the left and right sides of a plurality of slats 19.
0 is inserted, and a weight frame 21 is connected to the lower ends of the lifting cables 20, 20. Lifting cables 20, 20
passes through the lower surface of the case 17 and is connected to a lifting device D housed inside the case 17.

The lifting device D includes a motor 21, a moving body 22, a guide bar 23, a swinging arm 24, a detector 25, and a winding shaft 26.

The motor 21 includes a support shaft 27 fixed horizontally across left and right brackets 18, 18 fixed apart from each other in the longitudinal direction of the lower surface of the upper stile 5, and a motor body rotatable around the outer circumference of the support shaft 27. It consists of 28 pieces. A male thread, which is a threaded portion 29, is threaded in the circumferential direction on the outer peripheral surface of the motor body 28. A cylindrical protrusion 30 is provided on the outer periphery of the support shaft 27 at the end of the motor body 28 on the threaded portion 29 side, and a male thread 31 is threaded on the outer periphery of the protrusion 30 .

The movable body 22 has a concave arcuate surface 32, and a plurality of parallel grooves 33 are recessed in the concave arcuate surface 32 in a substantially circumferential direction of the arcuate surface 32. The groove 32
can be engaged with the threaded portion 29 of the motor body 28. Further, a hole 34 is penetrated through the movable body 22 in a direction perpendicular to the circumferential direction of the circular arc surface 32, and a rail bar 35 extending from the bracket 18 in parallel with the axial direction of the support shaft 27 is inserted therethrough. Furthermore, moving body 2
A guide bar 23 is provided protruding from the side surface of the second bracket 18. The base end of the guide bar 23 is a support shaft 27
is parallel to the axial direction, but the tip is bent horizontally in a direction intersecting the axial direction. When the motor body 28 is rotated, the movable body 22 meshed with the threaded portion 29 can move forward and backward along the rail bar 35 in the axial direction of the support shaft 27 together with the guide bar 23.

The swing arm 24 has a base end supported by a support shaft 27 so as to be rotatable, and a U-shaped engagement portion 37 is formed at the distal end, and the guide bar 23 is engaged with the swing arm 24 . A gear 38 is rotatably attached to the intermediate portion of the swinging arm 24 on the side of the motor body 28 and meshes with the male thread 31 of the protrusion 30 . Since the tip of the guide bar 23 is bent horizontally, the swing arm 24 swings in the width direction of the upper stile 5 as the guide bar 23 moves back and forth. The gear 38 meshes with the male thread 31 of the protrusion 30 and stabilizes the swinging of the swinging arm 24.

The detectors 25, 25 are arranged on the left and right sides of the swinging arm 24. a stationary arm 39 bent toward the motor body 28 so that its tips are located on the left and right sides of the swing arm 24;
39 is rotatably attached to the bracket 18 side of the swinging arm 24 with its base end being pivotally supported by the support shaft 27. Incidentally, it is preferable that the stationary arms 29, 29 are biased by a spring in the direction of moving away from each other. 40 is a spacer for accurately positioning the swinging arm 24 and the stationary arms 39, 39. The detectors 25, 25 are attached to the tips of the stationary arms 39, 39, and the swinging arms 24
placed on the left and right. Screws 41 are screwed into the interior and exterior walls 17a and 17b of the case 17, respectively.
The tip is in contact with the tip of the stationary arm 39. Screw 41
The position of the stationary arm 39 can be finely adjusted by changing the screwing length of the stationary arm 39.

The winding shaft 26 is integral with the motor body 28 and can rotate around the outer periphery of the support shaft 27, and the lifting cables 20, 20 are connected to the winding shaft 26 and can be wound thereon.

A control box 42 is housed inside the vertical stile 6, and a switch 43 is attached to the side of the room. The control box 42 controls the motor body 28 to stop rotating when the detector 25 and the swinging arm 24 come into contact.

The operating state of the lifting device D having the above configuration will be explained.

First, confirm the position of the swinging arm 24 when the winding of the lifting cables 20, 20 is completed and when the feeding is completed, and prepare by moving the screws 41, 41 so that it contacts the detectors 25, 25 at that position. .

The switch 43 is pressed to rotate the motor body 28 and wrap the lifting cables 20, 20 around it. Alternatively, send it out and raise/lower blind A. As the motor body 28 rotates, the movable body 22 moves in the axial direction of the support shaft 27. The guide bar 23 that moves together with the movable body 22 has a horizontally bent tip, and as the guide bar 23 moves, the swing arm 24 swings in a direction perpendicular to the support shaft 27. The moment when the swinging arm 24 swings and contacts the detector 25, that is, the lifting cable 2
The control box 42 stops the rotation of the motor body 28 when the winding of 0 and 20 is completed or when the feeding is completed.

This invention is not limited to the embodiments described above, but various other embodiments can be considered.

In the above embodiment, the blind A, which is a shield, is housed in the shoji B, but it can be mounted directly on a window frame, or can be applied to a wide range of other types of windows.

In addition, the shielding body may be anything that protrudes to block light, or blocks openings such as windows to prevent insects, dust, and light; blinds with slats,
Possible examples include accordion curtains made of bellows-shaped sheets, shields that cover window openings such as roll-up blinds and flexible screen doors, and awnings that allow sheets to be taken in and out by bending or extending their arms.

Further, as shown in FIG. 8, the threaded portion 29 of the motor body 28 may be threaded on the inner circumferential surface and meshed with the movable body 22 having a groove formed in the convex arcuate surface.

Effects of the invention This invention has the above-mentioned configuration, and includes a movable body that can be moved in the axial direction of the support shaft along the rail bar by rotation of the motor body, and a movable body whose tip is bent horizontally in a direction intersecting the axis. The guide bar is integrally movable, and a detector detects the swing arm swinging by the guide bar to stop the rotation of the motor, and the following effects are obtained. be able to.

B. The shield can be automatically rolled up by the rotation of the motor, making the work easy.

(b) The motor is automatically stopped by the upper and lower limits of the shield due to contact between the swinging arm and the detector, so no parts are damaged.

C. The amount of rotation of the motor body is changed to swing in the direction perpendicular to the support axis of the swing arm, and the displacement of the swing arm is detected by a detector, making the device compact and suitable for use on shoji frames and window frames. Easy to store. Furthermore, even with a type such as Yoshizu, which wraps around the entire length of the winding shaft, the winding can be done without the detector or the like getting in the way.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the essential parts of an embodiment of the shield stop device according to this invention, Figure 2 is a front view of a shoji shoji implementing this invention, and Figure 3 is a view of a shoji equipped with this invention. FIG. 4 is a vertical cross-sectional view of the window, FIG. 4 is a cross-sectional view thereof, FIG. 5 is a partial vertical cross-sectional view of the elevating device, FIG. 6 is a plan view thereof, FIG. 7 is a view along the - line in FIG. FIG. 8 is a longitudinal sectional view of another embodiment. A...Blinds, B...Shoji, C...Window frames,
D... Lifting device, 5... Upper stile, 6... Vertical stile, 7...
... lower stile, 17 ... blind case, 19 ... slat, 20 ... lifting cable, 21 ... motor, 2
2... Moving body, 23... Guide bar, 24... Rocking arm, 25... Detector, 26... Winding shaft, 27
... Support shaft, 28 ... Motor body, 29 ... Threaded part, 30 ... Protrusion, 31 ... Male thread, 32 ... Arc surface, 33 ... Groove, 34 ... Hole, 35 ... Rail bar, 37 ...Engagement part, 38...Gear, 39...
Stationary arm, 40... Spacer, 41... Screw, 42
...Control box, 43...Switch.

Claims (1)

[Scope of utility model registration request] A horizontally fixed support shaft 27 and a threaded portion 29 on the circumferential surface
The motor 21 consists of a rotatable motor body 28 having a screw threaded thereon, which engages with the threaded portion 29 of the motor body 28, and extends along the rail bar 35 with the support shaft 27.
A movable body 22 movable in the axial direction of the movable body 2
A guide bar 23 whose distal end is bent in a direction intersecting the axis of the support shaft 27, and whose base end is pivoted on the support shaft 27 and can swing left and right while being guided by the guide bar 23. Swinging arm, the swinging arm 24
, and a winding shaft 26 that rotates together with the motor body 28, and the rotation of the motor 21 is stopped upon detection by the detector 25. Shield stop device.