JP2636109B2 - Electric roll screen - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric roll screen.

[0002]

2. Description of the Related Art A conventional electric roll screen is disclosed in Japanese Patent Application No. 2-256736 (Japanese Patent No. 2607745) previously filed by the present applicant. In this example, two signal lines are arranged along one side edge of the screen from the upper end to the lower end thereof. A screen stop is provided at the lower end of the screen. The screen stopper has a hole penetrating a position corresponding to the signal line. A weight bar is inserted and attached to the screen stop. On the lower surface of the weight bar, a limit switch for detecting an obstacle is provided. A signal connector from the limit switch is provided with a male connector passing through the hole. By mating the female connector with the male connector penetrating the hole, the signal line wired to the screen and the limit switch are electrically connected.

[0003]

However, in the above-described conventional electric roll screen, the connection between the signal line wired to the screen and the limit switch is performed by connecting the male connector at the end of the signal line drawn from the limit switch to the terminal. Since only the signal line is brought into contact with the signal line by penetrating the hole through which the signal line passes, contact between the pin of the connector and the signal line during use may be released. In addition, it takes time to assemble the male connector pins and the signal lines without fail during the assembling operation at the time of manufacture. Also, since it is necessary to provide an opening for taking out the signal line at the end of the screen stop, press working is required. Since two signal lines are attached to one side of the screen, the signal lines on one side of the screen need to be guided close to the signal lines on the other side, which is cumbersome to manufacture. Further, since the signal lines may come into contact with each other, it is necessary to insulate them.

[0004]

SUMMARY OF THE INVENTION The present invention provides a weight bar cap, a contact electrically connected to a conductive member electrically connected to a signal line of a screen, and a contact connected to the contact. The above object is achieved by providing a connector that can be connected to a connector for a signal line from a limit switch board. That is, the electric roll screen of the present invention has a screen whose upper end is connected to a winding pipe that is rotated and driven by a motor controlled by a control device, and that has a screen that can be wound and unwound by this. A signal line provided on both side edges to sew from the upper end to the lower end thereof and having one end connected to the control device, a screen stop attached to the lower end of the screen so as to sandwich it from both sides, a screen stop, A conductive member which is inserted between both ends of the screen and is electrically connected to and in contact with the signal line, and a portion of which is provided to protrude outside from the side end of the screen stopper; A weight bar that is attached to and has a lower surface opened in the longitudinal direction, An obstacle detection member whose lower end protrudes from the opening of the weight bar and can move up and down with respect to the weight bar, and is provided in the weight bar and operates by moving the obstacle detection member upward with respect to the weight bar. A limit switch board on which the limit switch is mounted, a signal line led out from both ends of the limit switch board and provided with a connector at each end, and a weight bar cap fitted to both ends of the weight bar. And the weight bar caps at both end portions are electrically connected to the conductive member when the weight bar cap is fitted to the weight bar, and are connected to the contacts. And a connector that can be connected to the signal line connector And it features.

[0005]

The connection between the signal line of the screen and the signal line of the limit switch board is performed by fitting the conductive member connected to the signal line of the screen into the contact, and connecting the signal line connector of the limit switch board to the weight bar cap. This is performed by fitting the connector. As a result, the two are securely connected, and the connection is not disconnected during use. Also, the assembly work does not take much time,
It can be done easily. Since the signal of the signal line of the screen is taken out by the conductive member inserted between the screen and the screen stopper, it is not necessary to process the screen stopper. Since the conductive members are attached one by one to both ends of the screen, it is not necessary to guide one signal line in the direction of the other signal line, and the manufacture is easy.
Further, since the two signal lines do not come into contact with each other, insulation failure after starting use is eliminated.

[0006]

FIG. 1 is a perspective view showing the vicinity of a weight bar of an electric roll screen according to the present invention. Signal lines 12 are attached along both side edges of the screen 10 from the upper end to the lower end thereof. The signal lines 12 are attached to the screen 10 by sewing them (see FIG. 3 described later). Therefore, uncoated signal lines are exposed on the surface of the screen 10. At the lower end of the screen 10, two screen stoppers 14 are attached by a double-sided adhesive tape and a stapler so as to sandwich the screen from both sides. At both ends of the screen stopper 14, a conductive clip 16 (conductive member) that is electrically connected to the signal line 12 disposed at the side edge of the lower end of the screen 10 is attached. The screen stopper 14 is inserted into a groove formed in the weight bar 18. The lower surface of the weight bar 18 is opened in the longitudinal direction over the entire surface, and the lower end of the obstacle detection member 20 is provided so as to protrude along the opening. The obstacle detection member 20 is provided so as to be able to move slightly up and down with respect to the weight bar 18. A limit switch board 22 on which a limit switch (not shown) that comes into contact with the upper surface of the obstacle detection member 20 when the obstacle detection member 20 moves upward with respect to the weight bar 18 is installed in the weight bar 18.
Is provided. Signal lines 24 are drawn out from both ends of the limit switch board 22, and a male connector 26 is provided at an end of each signal line 24. The connector 26 is fitted and connected to a female connector 30 provided on each of the weight bar caps 28 that are fitted to both side ends of the weight bar 18. The weight bar cap 28 has a clip 1
A contact 32 electrically connectable to the contact 6 is provided. The contact 32 is formed by connecting two ends of a copper plate 34 connected to the connector 30 and provided on the weight bar cap 28 in a two-sided U-shape. The projection 16 is vertically projected from the weight bar cap 28, and is electrically connected to the clip 16 between the facing projections. Contact 3
2 is supported by a contact cover 33 integrally formed with the weight bar cap 28. The weight bar cap 28 has a screw hole 35 penetrating therethrough. The weight bar cap 28 is formed by screwing a screw 36 through a screw hole 35 and into a screw groove 38 formed in the weight bar 18, thereby forming the weight bar 1.
8 attached.

FIG. 2 shows the clip 1 on the screen stopper 14.
6 shows a fitting method. As shown therein, the clip 16 is formed such that one side (longer piece) of the clip 16 comes into contact with the side surface of one screen stop 14 from the side end of the screen stop 14, and the other end of the clip 16. (The shorter piece) is mounted to be inserted between the screen 10 and the other screen stop 14. FIG. 3 is a sectional view taken along line 3-3 in FIG. The signal line 12 is attached to the screen 10 by sewing. Therefore, the signal lines 12 are exposed at predetermined intervals on both surfaces of the screen 10. Since one piece of the clip 16 is inserted between the one screen stop 14 and the screen 10, the clip 16 is in wide contact with the exposed signal line 12 and is pinched by the screen stop 14. Therefore, they do not move. This ensures that the clip 16 and the signal line 12 are electrically connected.

The operation of the embodiment will be described. When the screen 10 is rolled down to the lowermost level or comes into contact with an obstacle while being rolled down, the obstacle detection member 20 moves upward with respect to the weight bar 18. When the obstacle detection member 20 moves upward, it contacts a limit switch (not shown) and turns it on. This signal is sent to the signal line 24 by the limit switch board 22,
Connector 26, connector 30, plate 34, contact 3
2, the clip 16 and the signal line 12 are transmitted in this order and output to a control device (not shown). As a result, the rotation of the motor stops, and the unwinding of the screen 10 stops.

[0009]

According to the present invention, the contact plate and the connector connected to the contact plate are provided on the weight bar cap, and the signal of the signal line of the screen is taken out by the conductive member. The connection between the limit switch board and the signal line can be performed by fitting the conductive member into the contact plate and fitting the signal line connector of the limit switch board into the weight bar cap connector. As a result, the two are securely connected, and the connection is not disconnected during use. Further, the assembling work can be easily performed without requiring much time. Since the signal of the signal line of the screen is extracted by the conductive member inserted between the screen and the screen stopper, it is not necessary to process the screen stopper. Since the conductive members are attached one by one to both ends of the screen, it is not necessary to provide one signal line along the lower edge of the screen so as to guide one signal line in the direction of the other signal line. Also 2
Since the signal lines do not come into contact with each other, insulation failure after starting use is eliminated.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the vicinity of a weight bar of an electric roll screen according to the present invention.

FIG. 2 is a diagram showing a method of fitting a clip to a screen stop.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Screen 12, 24 Signal line 14 Screen stop 16 Clip (conductive member) 18 Weight bar 20 Obstacle detection member 22 Limit switch board 26, 30 Connector 28 Weight bar cap 32 Contact

Claims (1)

(57) [Claims] An electric roll screen having an upper end connected to a winding pipe rotatably driven by a motor controlled by a control device and having a screen that can be wound and unwound by the upper end thereof. A signal line which is provided so as to sew from the upper end to the lower end thereof and has one end connected to the control device, a screen stop which is attached to the lower end of the screen so as to sandwich it from both sides, a screen stop and both sides of the screen A conductive member that is inserted between the ends to be in contact with the signal lines and is electrically connected to the signal lines, and that is partially provided to protrude outside from the side end of the screen stop; and is attached to the screen stop. A weight bar, the bottom surface of which is open in the longitudinal direction, and a weight bar An obstacle detection member whose lower end protrudes from the opening and can move up and down with respect to the weight bar, and a limit switch provided in the weight bar and operated by moving the obstacle detection member upward with respect to the weight bar A limit switch board, a signal line led out from both ends of the limit switch board and provided with connectors at the ends thereof, and weight bar caps fitted to both side ends of the weight bar, The weight bar caps at both ends have contacts that are electrically connected to the conductive member when the weight bar caps are fitted to the weight bars, and signals that are connected to the contacts and connected to the contacts. And a connector that can be connected to the wire connector. Dynamic roll screen.