JPH1181828A - Roll blind - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently bond and fix a screen on a winding pipe and a plate without using an auxiliary material such as a pressure sensitive adhesive double coated tape by providing the screen and the winding pipe made of a steel pipe covered with thermoplastic resin and welding an upper fringe part of the screen on the winding pipe. SOLUTION: An upper fringe part of a screen 1 is applied along a generating line of an outer peripheral face of a winding pipe 3 made of a steel pipe covered with polyvinyl chloride, and a head of a high frequency welding device is arranged on the screen 1 at one end of the winding pipe 3. Either of the winding pipe 3 and the head of the high frequency welding device is moved in the axial direction, and high frequencies are intermittently applied on the high frequency welding device to melt the covered resin of the winding pipe 3 to bond it on the upper fringe part of the screen 1. Consequently, welded parts 2 on which the winding pipe 3 is fixed are arranged in a row at a fixed interval in the direction of screen width in the upper fringe part of the screen 1 attached to the winding pipe 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll blind screen, a take-up pipe for bonding and fixing an upper edge of the screen, and a plate for bonding and fixing a lower edge of the screen to be mounted on a weight bar. It is.

[0002]

2. Description of the Related Art Conventionally, the upper edge of a screen of a roll blind has been adhesively fixed to a winding pipe via a double-sided adhesive tape, and the lower edge of the screen has also been adhesively fixed to a plate via a double-sided adhesive tape.

[0003]

The operation of bonding a screen having a long width to a winding pipe or plate with a double-sided adhesive tape requires a lot of skill and labor, and the expense of the double-sided adhesive tape which is an auxiliary material is overlapped. This was a factor in increasing blind costs. The present invention has been made to solve this problem, and an object thereof is to efficiently adhere and fix a screen to a winding pipe and a plate without using auxiliary materials such as a double-sided adhesive tape. Is to make it possible.

[0004]

In order to achieve the above object, the present invention adopts a method in which a winding pipe is made of a steel pipe having a thermoplastic resin coating on a surface, a plate is made of a thermoplastic resin, and a plate is made of a thermoplastic resin. That is, the edge was welded to the winding pipe and the plate was welded to the lower edge of the screen by local heating. Local heating can be performed using a high-frequency welding device, an ultrasonic welding device, a spot heating welding device, or the like. The equipment is selected according to the coating resin and the material of the screen.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described based on a first embodiment shown in the drawings. The winding pipe 3 shown in FIG. 1 is made of a polyvinyl chloride coated steel pipe. The upper edge of the screen 1 is applied along the generatrix on the outer peripheral surface of the winding pipe 3. At one end of the winding pipe, the head of the high frequency welding device is arranged on the screen. Then, one of the winding pipe and the head of the high-frequency welding device is moved in the axial direction, and high-frequency is applied intermittently. The high-frequency application portion of the steel pipe winding pipe instantly rises in temperature, and the resin that coats it melts and adheres to the upper edge of the screen. When the application of the high frequency is stopped, the molten resin adhered to the screen is cooled and adheres to the winding pipe. At the upper edge of the screen, a welded portion to be adhesively fixed to the winding pipe is sequentially formed in the width direction. When the head of the high-frequency welding device reaches the other end of the winding pipe, the attachment of the screen to the winding pipe ends.

[0006] Screen 1 attached to winding pipe 3
The welded portions 2 to which the take-up pipes 3 are fixed are arranged in a row at regular intervals in the screen width direction on the upper edge portion. Attaching the screen to the take-up pipe is a simple operation of intermittently applying heat while moving the head of the high-frequency welding device along the upper edge of the screen 1 applied to the take-up pipe 3. It can be implemented efficiently. Further, since no auxiliary material such as a double-sided tape is required, the cost of attaching the screen to the winding pipe is reduced.

[0007]

A second embodiment of the present invention will be described. FIG.
The plate 4 is made of a thermoplastic resin. As shown in FIG. 2A, the plate 4 is applied to the lower edge of the screen 1. When the head of the high-frequency welding device is moved from one end of the plate applied to the screen to the other end, and the high-frequency heating is intermittently applied to the plate, the portion of the plate applied by the high-frequency heating is heated and melted, and cooled again. Adhesively fix to the screen.

As shown in FIG. 2A, the welded portions 2 for bonding and fixing the plate 4 are arranged in a row at the lower edge of the screen 1 in the width direction. As shown in FIG. 2B, the lower edge of the screen 1 is welded and fixed to the plate 4 and then wound around the plate. Next, as shown in FIG. 2C, the plate 4 around which the screen 1 is wound is inserted into the weight bar 5.

The work of welding and fixing the plate 4 to the screen 1 is easy and can be carried out efficiently.
Further, since no auxiliary material such as a double-sided adhesive tape is used, the cost of attaching the plate 4 to the screen 1 is reduced.

[0010]

As described above, according to the present invention, the upper edge of the screen is partially welded and connected to the winding pipe via the coating resin provided on the surface of the winding pipe, and the screen is made of a thermoplastic resin. Since the plate is also partially welded to the lower edge of the screen and connected to the weight bar, auxiliary material costs are not required and work is also required for the head of the welding device, compared to conventional ones using double-sided adhesive tape. Since it is simple enough to be moved in the width direction of the screen, it is possible to carry out the operation efficiently without skill, and an excellent effect that the assembly cost of the roll blind can be reduced can be achieved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of a roll blind according to a first embodiment of the present invention.

FIG. 2 is a schematic view showing a step of welding a plate to a screen of a roll blind and incorporating the plate into a weight bar according to a second embodiment of the present invention. (A) shows a step of welding the plate to the screen, (b) shows a step of winding the screen around the plate, and (c) shows a step of attaching the plate around which the screen is wound to the weight bar.

[Explanation of symbols]

 1: Screen 2: Welding part 3: Winding pipe 4: Plate 5: Weight bar

Claims (2)

[Claims] A screen (1) and a winding pipe (3) made of a thermoplastic resin-coated steel pipe, wherein an upper edge of the screen is at least partially welded to the winding pipe. And roll blinds. 2. A screen (1) wound around a winding pipe (3), a plate (4) made of a thermoplastic resin, and a weight bar (5). A roll blind, wherein the plate, which is at least partially welded and welded to the screen, is detachably mounted on the weight bar.