JPH053108Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a Roman shade that allows variations in the way the screen opens.

[Prior Art] A Roman shield whose screen can be opened in various ways is known from Utility Model Application No. 126882/1982. The Roman shade consists of a head rail, a screen suspended from the head rail, tapes attached vertically at regular intervals in the width direction of the screen, and tapes attached vertically at regular intervals to each tape. It consists of a fixed loop, a cord whose lower end is fixed to the lower edge of the screen, and a cord lock provided at one end of the head rail. It extended horizontally and then operably depending through a cord lock. Variations in how the screen opened were created by changing the way each cord was pulled, that is, the length of the pull.

[Problems to be solved by the invention] The above-mentioned Roman shade is troublesome because each code must be operated separately every time the screen is opened, except for the opening method in which the lower edge of the screen is leveled with a line. There was a problem.
This invention was devised to solve this problem, and its purpose is that no matter how the screen is opened, once it is set, the screen can be opened in that way with a single operation. Our goal is to provide Roman shades that can be opened in different ways.

[Means for Solving the Problems] In order to achieve the above object, the features of the present invention include: as shown in the embodiment of FIG. 1, the shaft 12 is rotatably supported on the head rail;
A sleeve 18 is attached to the shaft so that its fixed position can be adjusted, and a screw 1 is attached to a part of the outer circumference of the sleeve.
9, and a drum 14 on which the lifting cord 15 is wound.
The female thread 17 provided in the shaft hole is fitted into the male thread 19. A thread 19 is formed in the center of the sleeve 18, and the outer diameter of the tip side of the male thread is equal to or smaller than the root diameter of the male thread 19, and the outer diameter of the opposite root side is equal to or smaller than the crest diameter of the male thread 19. It is desirable to make it larger than .

[Operation] When the shaft 12 is rotated in the direction to wind up the lifting cord 15 as shown by the arrow in FIG.
After the shaft 9 has advanced to the root side to the limit, the shaft 12
Since it rotates together with the winding cord 15,
By adjusting the initial position of each drum 14, that is, the position of each drum 14 on the male screw 19 when the screen is closed, the winding length of the lifting cord 15 of each drum 14 can be changed. Therefore, by setting the initial position of each drum 14 according to the desired screen shape, it is possible to open the screen in the desired manner simply by rotating the shaft 12. Next, when the shaft 12 is reversed to close the screen, the drum 14
At first, it rotates together with the shaft 12 and the lifting cord 1
5, but when you finish rewinding the lifting cord 15,
Since it cannot be rotated any further, it moves on the male screw 19 toward its tip and returns to its starting position. Thus, whenever the shaft 12 is turned in one direction, the screen opens to a predetermined shape, and then, when rotated in the opposite direction, the screen closes and its lower edge is aligned.

[Example] The Roman shade of the present invention will be explained in more detail based on the example shown in the drawings.

As shown in FIG. 2, a Roman shade head rail 10 is fixedly supported on a part of a building via a bracket, and the upper edge of a screen 20 is attached to the front surface of the head rail. A bearing 11 is attached to the head rail 10, and the shaft 1 is attached to the bearing.
2 is rotatably supported. A pulley 26 is fixed to one end of the shaft 12, and an operating cord 25 is hung on the pulley. Tape 22 is attached vertically to the back surface of the screen 20 at regular intervals in the horizontal direction, and loops 24 are attached to the tape at regular intervals in the vertical direction. A sleeve 18 is fixed at a position on the shaft 12 corresponding to each tape 24, and the drum 1 is mounted on the sleeve 18.
4 is fitted externally. A lifting cord 15 is wound around the drum, and the lifting cord 15 passes through each loop 24 of the tape 22, and its lower end is fixed to the lower edge or the lowest loop of the screen 20.

As shown in FIG. 1, a thread 19 (right-hand thread) is provided in the center of the sleeve 18, and on the right side, that is, on the base side of the male thread 19, a large diameter portion 31 equal to the thread diameter of the male thread, and a large diameter portion 31 at the opposite tip. A small diameter portion 32 equal to the root diameter of the male thread is provided on each side. A locking screw 13 is provided on the large diameter portion 31 to fix the sleeve 18 to the shaft 12. A male thread 17 that fits into a male thread 19 is provided in the shaft hole of the drum 14, and the drum 14 is attached to the sleeve 18 by fitting the female thread 17 into the male thread 19.

As shown in FIG. 2, when the screen 20 is closed, the lower edge of the screen 20 is aligned. At this time, the initial position of each drum 14 is set such that the center one is closest to the root side of the male thread 19, and the drum becomes farther from the root side of the male thread 19 as it moves left and right from the center. Next, pull the operating cord 25 hooked to the pulley 26 to release the shaft 12.
When the lifting cord 15 is turned in the direction of winding up the lifting cord 15, the center drum winds up the lifting cord the longest, and the length of the lifting cord wound by the drum becomes shorter as it goes to the left and right. Open into the shape shown.

When the screen 20 is opened, all of the drums 14 are located on the base side of the external thread 19 of the sleeve 18, as shown in FIG. Therefore, when the shaft 12 is reversed by pulling the opposite side of the operating cord 25, the drum 14 rotates in reverse together with the shaft 12 and rewinds the lifting cord 15. However, once the lifting cord 15 is completely unwound, it cannot rotate, so the male screw 19 toward the distal end side and return to the initial position shown in FIG. By adjusting the initial position of each drum 14, it is possible to set the opening of the screen 20 to any shape. Once set, the screen 20 can be opened to the set shape by simply rotating the shaft 12. can be opened and the screen 20 can be closed in a shape where the lower edges are level.

[Effects of the invention] As mentioned above, the Roman shade of the present invention differs from the conventional system in which each lifting cord is operated separately each time the screen is opened to vary the opening method. Once the initial position is set according to the shape of the screen to be opened, the screen can be opened into the desired shape simply by rotating the shaft, which is an excellent effect.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the main parts of a Roman shade according to an embodiment of the present invention, Figures 2 and 3 are rear views of the Roman shade shown in Figure 1, and Figure 2 is a state in which the screen is closed. FIG. 3 shows the screen in an open state. FIG. 4 is a perspective view of the screen of FIG. 3 seen from the front. In the figure, numeral 10 is a head rail, 12 is a shaft, 14 is a drum, 15 is a lifting cord, 1
7 is female thread, 18 is sleeve, 19 is male thread, 2
0 indicates a screen, respectively.

Claims (1)

[Scope of utility model registration request] a head rail, a shaft rotatably supported by the head rail, a drum attached to the shaft, a screen having an upper end attached to the front surface of the head rail, and a rear surface of the screen spaced apart at a constant interval in the horizontal direction. a tape attached vertically to the tape, and loops attached vertically at regular intervals to the tape;
A Roman shade made of a lifting cord that is wound around the drum and passes through the loop and whose lower end is fixed to the lower end of the loop or the lower end of the screen, and a sleeve is provided on the shaft at a position corresponding to the tape. The sleeve is mounted so that its fixed position can be adjusted, a thread is provided on a part of the outer periphery of the sleeve, a female thread provided in the shaft hole of the drum is fitted into the male thread, and a portion of the sleeve from the male thread to the base side is connected to the external thread. A Roman shade that can be opened in a variable manner, characterized in that a large diameter part is formed to be equal to the thread diameter of the male thread, and a small diameter part is formed on the tip side from the male thread to be equal to the root diameter of the male thread.