Dual-use pole for non-cord window blind assembly and blind slat lift mechanism using same

Abstract

A dual-use pole used in a non-cord window blind assembly is provided to have a pole shank and a pole head. The pole head has a flange and a driving block. The flange has an end surface located at an end of the pole shank. The driving block is located at an opposing end surface of the flange and it is used to connect and drive a blind slat tilt adjuster to further adjust the tilt angle of the blind slats.

Claims

1. A blind slat lift mechanism used in a non-cord window blind assembly comprising a blind slat tilt adjuster, said blind slat tilt adjuster comprising an adjustment member, the blind slat lift mechanism, comprising: a bottom rail comprising a first through hole and a second through hole in communication with said first through hole, said first through hole having an opening size smaller than said second through hole; and a dual-use pole comprising: a pole shank; and a pole head comprising a flange and a driving block, said flange having an end surface located at an end of said pole shank, said driving block being located at an opposing end surface of said flange and detachably connectable to said adjustment member of said blind slat tilt adjuster, said flange of said dual-use pole having a diameter larger than the opening size of said first through hole of said bottom rail but smaller than the opening size of said second through hole; when said dual-use pole is set in a first operating position, said flange of said pole head is abutted against a bottom surface of said bottom rail and said driving block of said pole head is inserted through said first through hole of said bottom rail into an inside of said bottom rail so that said dual-use pole is capable of lifting said bottom rail; when said dual-use pole is set in a second operating position, said flange of said pole head is supported by said bottom rail, and said pole shank protrudes out of the said bottom rail through said first through hole, so that said dual-use pole is capable of pulling said bottom rail downwards.

2. The blind slat lift mechanism as claimed in claim 1, wherein said pole shank comprises an axial hole and a transverse locating hole located at one end thereof radially in communication with said axial hole; said pole head further comprises an extension arm extended from the end surface of said flange of said pole shank; said extension arm further comprises a positioning peg located at an end of said extension arm, and said positioning peg is detachably engaged with said transverse locating hole of said pole shank.

3. The blind slat lift mechanism as claimed in claim 2, wherein said pole head further comprises a resilient arm extended from said end surface of said flange facing said pole shank and inserted into said axial hole of said pole shank to abut against an inside wall of said pole shank.

4. The blind slat lift mechanism as claimed in claim 1, wherein said adjustment member of said blind slat tilt adjuster comprises a hook; said driving block has a hook hole and said hook hole is detachably connected to said hook.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is an oblique elevational view of a dual-use pole in accordance with the present invention.

(2) FIG. 2 is an exploded view of the dual-use pole in accordance with the present invention.

(3) FIG. 3 is an oblique elevational view of the present invention, illustrating the dual-use pole coupled to a blind slat tilt adjuster of a non-cord window blind assembly in accordance with the present invention.

(4) FIG. 4 is an exploded view of a window blind lift mechanism in accordance with the present invention.

(5) FIG. 5 is an oblique elevational view of the blind slat lift mechanism, illustrating the dual-use pole in a first operating position.

(6) FIG. 6 is an oblique elevational view of the blind slat lift mechanism, illustrating the dual-use pole in a second operating position.

DETAILED DESCRIPTION OF THE INVENTION

(7) Referring to FIG. 3, a non-cord window blind assembly 10 is shown. The non-cord window blind assembly 10 comprises a headrail 11, a bottom rail 12, a set of blind slats 13 arranged between the headrail 10 and the bottom rail 12, and a blind slat tilt adjuster 14 mounted in the headrail 11. The blind slat tilt adjuster 14 comprises an adjustment member 15. When rotating the adjustment member 15, the blind slat tilt adjuster 14 is driven to adjust the tilting angle of the blind slats 13. As the blind slat tilt adjuster 14 is of the known art, to save space, the structural details and functioning of the blind slat tilt adjuster 14 will not be repeated here.

(8) Referring to FIGS. 1 and 2, a dual-use pole 20 in accordance with the present invention comprises a pole shank 30 and a pole head 40.

(9) The pole shank 30 defines an axial hole 31 and a transverse locating hole 32. The transverse locating hole 32 is located near one end of the pole shank 30 and radially disposed in communication with the axial hole 31.

(10) The pole head 40 comprises a flange 41, an extension arm 42, and a resilient arm extended from one end surface of the flange 41. The extension arm 42 is inserted into the axial hole 31 of the pole shank 30 and has a positioning peg 44 at an end of the extension arm 42. The positioning peg 44 is resiliently engaged with the transverse locating hole 32 of the pole shank 30. The resilient arm 43 is inserted into the axial hole 31 of the pole shank 30 to abut against an inside wall of the pole shank 30. Thus, the pole head 40 is detachably fastened to the top end of the pole shank 30, and can be detached from the pole shank 30 for replacement in case of damage.

(11) The pole head 40 further comprises a driving block 45 extended from an opposite end surface of the flange 41 and adapted for driving the adjustment member 15 of the blind slat tilt adjuster 14, as shown in FIG. 3. Further, the driving block 45 has a hook hole 46. The adjustment member 15 has a hook 16, which is detachably connected to the hook hole 46. Thus, the dual-use pole 20 is operable to drive the blind slat tilt adjuster 14.

(12) In order to mate with the dual-use pole 20, as shown in FIG. 4, the bottom rail 12 is configured to provide a first through hole 17 and a second through hole 18 in communication with the first through hole 17. The size of the first through hole 17 is smaller than the size of the second through hole 18. Further, the diameter of the flange 41 of the dual-use pole 20 is larger than the size of the first through hole 17 but smaller than the size of the second through hole 18.

(13) Thus, when the dual-use pole 20 is set in a first operating position P1, as shown in FIG. 5, the flange 41 of the pole head 40 is directly abutted against the bottom surface of the bottom rail 12 and the driving block 45 of the pole head 40 is inserted through the first through hole 17 into the inside of the bottom rail 12. So, the pole head 40 is capable of lifting the bottom rail 12 to receive the blind slats 13. Alternatively, when the dual-use pole 20 is set in a second operating position P2, as shown in FIG. 6, the flange 41 of the pole head 40 is inserted through the second through hole 18 into the inside of the bottom rail 12. Then, the pole head 40 can be moved to a place above the first through hole 17 to make the flange 41 of the pole head 40 be supported on the bottom rail 12. At this time, the pole shank 30 protrudes out of the bottom rail 12 through the first the first through hole 17. So that, the dual-use pole 20 is capable of being used to pull the bottom rail 12 downwards so as to extend out (lower) the blind slats 13.

(14) In general, the dual-use pole 20 can be used for driving the blind slat tilt adjuster 14 to adjust the tilt angle of the blind slats 13, and can also be coupled to the bottom rail 12 to constitute a blind slat lift mechanism 50 for lifting or lowering the blind slats 13, achieving the object of use convenience.