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The present invention relates to double fabric blinds and, more particularly, to a device for adjusting a fabric angle of the double fabric blinds, which is capable of finely adjusting an degree of openness of a front sheet, wherein a plurality of balls are sequentially held in a holding groove, e.g

The present invention relates to double fabric blinds and, more particularly, to a device for adjusting a fabric angle of the double fabric blinds, which is capable of finely adjusting an degree of openness of a front sheet, wherein a plurality of balls are sequentially held in a holding groove, e.g., as four or eight balls, inserted into an insertion groove of a rotation component, wherein the plurality of balls are rotated in a guide groove of a stopper by approximately 90 degrees or 45 degrees, thereby improving safety and omitting the use of a conventional string.

대표청구항 ▼

1. An angle-adjustable double panel shading assembly, comprising: a rotation component having an axial aperture, the axial aperture defining an inner circumferential surface about a hollow interior of the rotation component, wherein the inner circumferential surface of the rotation component include

1. An angle-adjustable double panel shading assembly, comprising: a rotation component having an axial aperture, the axial aperture defining an inner circumferential surface about a hollow interior of the rotation component, wherein the inner circumferential surface of the rotation component includes at least one axial groove for holding a ball therein;a stopper positioned within the hollow interior of the rotation component and including an axial shaft insertion hole therein, the stopper including an outer circumferential surface having a groove therein, wherein the groove is configured to cooperatively hold the ball in the at least one axial groove of the rotation component and includes a circumferential path with a locking position therein, and wherein the locking position prevents circumferential motion of the ball about the outer circumferential surface of the stopper;a spring clutch including: a fixing shaft extending through the axial shaft insertion hole of the stopper and the axial aperture of the rotation component, anda spring disposed about the fixing shaft and including a projection engaging a retaining fixture of the stopper; anda cover disposed about the rotation component and operably rotatably engaging one of a pair of panels wound thereon, wherein the rotation component is configured to move the ball through the groove of the stopper into the locking position therein, thereby rotating and engaging the rotation component with the stopper to expandingly twist the spring of the spring clutch about the fixing shaft, wherein expanding movement of the spring about the fixing shaft allows adjustment of an angle of engagement between the fixing shaft and the rotation component to adjust a light transmission through the double panel shading assembly. 2. The angle-adjustable double panel shading assembly of claim 1, wherein the axial groove of the rotation component comprises one of a plurality of axial grooves disposed about the inner circumferential surface of the rotation component. 3. The angle-adjustable double panel shading assembly of claim 1, further comprising at least one bottom rail coupled to an end of the double panel shading assembly, the bottom rail being operable to move the one panel of the double panel shading assembly to move the ball through the groove of the stopper to the locking position therein and expandingly twist the spring of the spring clutch. 4. The angle-adjustable double panel shading assembly of claim 1, wherein the cover further includes a winding drum disposed about an outer surface of the cover, wherein the one panel of the double panel shading assembly rotatably engages the cover and the rotation component through the winding drum. 5. The angle-adjustable double panel shading assembly of claim 1, wherein the retaining fixture of the stopper comprises an axial coupling groove for receiving the projection of the spring. 6. The angle-adjustable double panel shading assembly of claim 1, further comprising a plurality of connection vanes disposed between and coupling each panel of the double panel shading assembly, wherein a displacement of the spring relative to the stopper and the angular position of spring adjusts an angular orientation of the plurality of connection vanes and thereby allows adjustment of the light transmission through the double panel shading assembly. 7. The angle-adjustable double panel shading assembly of claim 1, wherein the groove of the stopper permits circumferential movement of the ball therein, into and out of the locking position, to selectively permit retraction of the double panel shading assembly onto the cover. 8. The angle-adjustable double panel shading assembly of claim 1, wherein the axial groove of the rotation component extends substantially axially along a rotation axis of the stopper and the rotation component. 9. The angle-adjustable double panel shading assembly of claim 1, further comprising a protrusion disposed on one of an inner circumferential surface of the cover and an outer circumferential surface of the rotation component, wherein the protrusion engages a recess disposed on the other of the inner circumferential surface of the cover and the outer circumferential surface of the rotation component to operably couple the cover to the rotation component. 10. The angle-adjustable double panel shading assembly of claim 9, further comprising a clip coupled to an axial end of the fixing shaft and contacting the protrusion of the fixing shaft. 11. A variable transparency blind assembly, comprising: a rotation component having an axial aperture, the axial aperture defining an inner circumferential surface about a hollow interior of the rotation component, wherein the inner circumferential surface of the rotation component includes at least one axial groove for holding a ball therein;a stopper positioned within the hollow interior of the rotation component and including an axial shaft insertion hole therein, the stopper including an outer circumferential surface having a groove therein, wherein the groove is configured to cooperatively hold the ball in the at least one axial groove of the rotation component and includes a circumferential path with a locking position therein, and wherein the locking position prevents circumferential motion of the ball about the outer circumferential surface of the stopper;a spring clutch including: a fixing shaft extending through the axial shaft insertion hole of the stopper and the axial aperture of the rotation component, anda spring disposed about the fixing shaft and including a projection engaging a retaining fixture of the inner circumferential surface of the stopper; anda double panel assembly operably rotatably engaging the rotation component through a cover disposed about the rotation component, wherein the double panel assembly further includes: a first sheet wound about an outer circumferential surface of the cover,a second sheet adjacent to the first sheet and coupled to the first sheet through a plurality of connection vanes, anda rail coupled to an end of the first sheet, wherein movement of the ball through the groove of the stopper to the locking position rotates the stopper to expandingly twist the spring of the spring clutch, thereby adjusting an angle of engagement between the stopper and the rotation component, an angle of engagement between the fixing shaft and the rotation component, and an angle of the vanes. 12. The variable transparency blind assembly of claim 11, further comprising a clip coupled to a second axial end of the fixing shaft and contacting the protrusion thereof. 13. The variable transparency blind assembly of claim 11, wherein the shaft further includes a coupling groove for receiving a coupling protrusion of a bracket. 14. The variable transparency blind assembly of claim 11, further comprising a protrusion disposed on one of an inner circumferential surface of the cover and an outer circumferential surface of the rotation component, wherein the protrusion engages a recess disposed on the other of the inner circumferential surface of the cover and the outer circumferential surface of the rotation component. 15. The variable transparency blind assembly of claim 14, wherein the groove of the stopper permits circumferential movement of the ball therein, into and out of the locking position, to selectively permit retraction of the pair of sheets onto the cover. 16. An angle-adjustable double panel shading assembly, comprising: a fixing member;an intermediate hub including an axial insertion hole for receiving the fixing member therein, and further including a ratcheting element on an outer surface thereof;a clutch including a spring disposed about the fixing member, wherein the spring further includes a tang for matingly engaging the intermediate hub; andan external hub disposed about the intermediate hub and operably rotatably engaging one of a pair of sheets wound thereon, wherein the external hub is configured to move the ratcheting element of the intermediate hub into a rotational locking position, thereby engaging the external hub with the intermediate hub to permit expanding rotation of the spring of the clutch about the fixing member, wherein the expanding rotation of the clutch about the fixing member allows adjustment of an angle of engagement between the fixing member and the external hub and a light transmission through the double panel shading assembly, through operable rotatable engagement between the external hub and the pair of sheets wound thereon. 17. The angle-adjustable double panel shading assembly of claim 16, further comprising a retractor spring operatively coupled to the external hub through the clutch, wherein the ratcheting element further includes an opposing locking position for preventing retraction of the pair of sheets onto the external hub by engaging the retractor spring in a tightened position, and wherein the ratcheting element of the intermediate hub in the opposing locking position permits retraction of the pair of sheets onto the external hub.