KR-20260065350-A - Lower bar to reduce the rotational friction of double fabric

Abstract

The present invention relates to a bottom bar that reduces rotational friction of a double fabric, and more specifically, to a bottom bar having a long axis in which a Teflon tape, which serves as a friction coefficient blocking member, is inserted and installed at the portion where the outer surface of the double fabric contacts the inner surface of the bottom bar, thereby allowing the double fabric to rotate without friction while in contact with the friction coefficient blocking member during rotation. This is characterized by: a bottom bar having a double fabric wound thereon inserted and installed in an internal space, with a stopper formed on the upper and lower inner surfaces; a friction coefficient blocking member using a synthetic resin Teflon tape having the same shape as the inner surface of the bottom bar, which is inserted and fixed to the stopper formed on the upper and lower surfaces of the bottom bar; and, when the double fabric rotates, the outer surface of the double fabric comes into contact with the friction coefficient blocking member, thereby enabling up-and-down operation while offsetting the frictional force of the double fabric.

Inventors

• 곽재석
• 곽우진
• 곽민준

Assignees

• 곽재석
• 곽우진
• 곽민준

Dates

Publication Date

20260508

Application Date

20241101

Claims (2)

1. A bottom bar with a double fabric wound around it inserted and installed in the internal space, and a bottom bar with catches formed on the upper and lower surfaces of the interior; A friction coefficient blocking member using a synthetic resin Teflon tape that is inserted and fixed into a locking projection formed on the upper and lower surfaces of the bottom bar and has the same shape as the inner surface of the bottom bar; and A bottom bar that reduces the rotational friction of a double fabric, wherein when the double fabric rotates, the outer surface of the double fabric comes into contact with a friction coefficient blocking member, thereby enabling up-and-down operation while offsetting the frictional force of the double fabric.
2. In paragraph 1 The above friction coefficient blocking member further comprises a bottom bar for reducing rotational friction of a double fabric, wherein the member is formed from Teflon and an ultra-high molecular weight PE-UHMWPE material using a tape having a thickness of 0.2 mm to 3 mm.

Description

Lower bar to reduce the rotational friction of double fabric The present invention relates to a bottom bar that reduces rotational friction of a double fabric, and more specifically, to a bottom bar having a long axis in which a friction coefficient blocking member is inserted and installed at the portion where the outer surface of the double fabric contacts the inner surface of the bottom bar, thereby allowing the double fabric to rotate without friction while in contact with the friction coefficient blocking member during rotation. Generally, curtains and Venetian blinds are used to control window lighting. Among these, curtains regulate light by selectively covering specific parts of the window using light-blocking fabric; however, since only the light from the specific parts covered by the fabric is blocked, there was a problem in that it was difficult to control the lighting of the entire window. To compensate for the problems of such curtains, zebra blinds or combi blinds are used to control light by adjusting the angle and position of a shielding member installed horizontally or vertically in the window. These zebra and combi blinds use ball chains or cords to adjust the angle and position of the shielding members. However, since the cords hang down externally, they are aesthetically unpleasing. Furthermore, accidents occur when young children wrap the ball chains or cords around their necks while playing, and in severe cases, they can be life-threatening. In order to solve the problems of zebra or combi blinds for aesthetic and safety reasons, Korean Utility Model Publication No. 20-2010-0007482, a 'weight bar for roller blinds', has been disclosed. The weight bar for the above-mentioned roll blind is installed between the blind sheets (7) and the blind sheets (7) at the bottom of the blind sheet (7) as shown in the attached drawing 1, so as to be able to spread the blind sheet (7) taut, and is composed of a support shaft (10), a case (20) that accommodates the support shaft (10), and fixing pins (30) that are inserted into both ends of the case (20) to fix the case (20) and the support shaft (10). When the case (20) combined with the support shaft (10) installed at the bottom of the blind sheet (7) is held and pulled downward, the blind sheet (7) and the support shaft (10) rotate and come down to the bottom of the blind sheet (7). However, due to the load of pulling the case (20), as shown in the attached drawing Fig. 2, the rotating support shaft bends downward and the blind sheet bends together. There was a problem where the bending of the blind paper occurred continuously, causing one side to stretch or, in severe cases, tearing the blind paper to render it unusable. To solve the above problem, my previously registered patent No. 10-2257535, "Device for preventing bending of fabric and bottom rotating rod of cordless double blind," has been registered. As shown in the attached drawings FIGS. 3 to 4, the structure of the prior registered patent is a cordless double blind fabric and a lower rotating rod bending prevention device (200) having a lower case (210), a lower rod (230) installed at the bottom of the double fabric (240), and end caps (220) installed at both ends of the lower case (210). The invention is characterized by a lower case (210) having connecting protrusions (211) formed on both upper sides, a handle portion (250) having a roller housing (256) formed to be connected to the outer surface of the lower case (210) and to which a roller (260) is connected, two rollers (260) forming a pair that are inserted and installed in the roller housing (256), and when the lower case (210) is connected to the outer surface of the handle portion (250), the roller (260) rotates while in close contact with the outer surface of the double fabric (240). The previously registered patent had the disadvantage that the handle part (250) was installed in the middle part of the lower case (210), so marks from the roller (260) remained on the surface of the double fabric (240) for a long time, which was aesthetically unpleasing. In addition, it had the disadvantage of having a complex structure, not being easy to install, and having a high manufacturing cost. FIGS. 1 and 2 are a perspective view and a cross-sectional view showing the configuration of a conventional patent. FIGS. 3 and 4 are an enlarged cross-sectional view and an exploded perspective view showing the configuration of the author's previously registered patent. FIG. 5 is a perspective view showing the configuration of the present invention. FIG. 6 is an enlarged cross-sectional view showing the configuration of the present invention. FIG. 7 is a perspective view showing the configuration of the bottom bar of the present invention. FIG. 8 is a perspective view showing the configuration of the friction coefficient blocking member of the present invention. FIG. 9 is a drawing showing the combined state of the present invention. FIG. 10 is an enl