Window blind assembly having an outer frame

Abstract

A window blind assembly includes an outer frame, a blind unit, and a control device. The outer frame includes a head rail defining a first receiving space, and two opposite vertical rails one of which defines a second receiving space in spatial communication with the first receiving space. The blind unit includes a plurality of slats and a slat ladder supporting the slats. The control device includes a lift cord connected to the slats, and a control member having an operating portion that extends outwardly from the second receiving space and that is operable to slide the control member relative to the outer frame so as to raise or lower the slats.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The invention relates to a window blind, more particularly to a window blind assembly that is framed and that is easy to operate.[0003]2. Description of the Related Art[0004]Referring to FIG. 1, a conventional window blind includes a head rail 1, a bottom rail 2 opposite to the head rail 1, a plurality of horizontal slats 3 connected between the head rail 1 and the bottom rail 2, a rotary shaft 4 mounted in the head rail 1, two spaced-apart drums 5 mounted on the rotary shaft 4, two slat ladders 6 each connected between one of the drums 5 and the bottom rail 2, a slat angle adjustment rod 7 connected to the head rail 1 for rotating the rotary shaft 4, a cord-pressing seat 8 provided in the head rail 1, and a lift cord 9. The lift cord 9 has a loop portion extending through the cord-pressing seat 8, and two opposite ends connected to the bottom rail 2.[0005]By operating the slat angle adjustment rod 7 so as to rotate sim...

AI Technical Summary

Benefits of technology

[0009]Therefore, the object of the present invention is to provide a window blind assembly that is capable of overcoming the aforementioned drawbacks of the prior art.

[0010]According to one aspect of this invention, a window blind assembly is adapted to be sandwiched between front and rear transparent plates. The window blind assembly comprises an outer frame, a blind unit, and a control device. The outer frame is adapted to be placed between the front and rear transparent plates, and includes a head rail, a bottom rail, and two opposite vertical rails one of which is connected to right ends of the head and bottom rails and the other one of which is connected to left ends of the head and bottom rails. The head rail defines a horizontally extending first receiving space. One of the vertical rails defines a vertically extending second receiving space in spatial communication with the first receiving space. The blind unit is disposed within the outer frame, and includes a plurality of slats, and a slat ladder supporting the slats. The control device includes a lift cord connected to the slats and extending into the first and second receiving spaces, and a control member mounted on said one of the vertical rails and having an interior sliding portion disposed within the second receiving space and connected to the lift cord, and an operating portion connected to the interior sliding portion and extending outwardly from the second receiving space. The operating portion is operable to slide the control member relative to said one of the vertical rails so as to raise or lower the slats.

[0011]According to another aspect of this invention, a window blind assembly is adapted to be sandwiched between front and rear transparent plates. The window blind assembly comprises an outer frame, a blind unit, and a control device. The outer frame is adapted to be placed between the front and rear transparent plates, and includes a head rail, a bottom rail, and two opposite vertical rails one of which is connected to right ends of the head and bottom rails and the other one of which is connected to left ends of the head and bottom rails. The head rail defines a horizontally extending first receiving space. One of the vertical rails defines a second receiving space in spatial communication with the first receiving space. The blind unit is disposed within the outer frame, and includes a plurality of slats, and a slat ladder supporting the slats. The control device includes a rotary shaft disposed within the head rail and connected to the slat ladder, a turning cord unit extending within the second receiving space and associated with the rotary shaft so as to turn the slats through the rotary shaft, a control member disposed in the second receiving space and connected to the turning cord unit and operable to slide upward and downward along the second receiving space so as to rotate the rotary shaft through the turning cord unit, and a limiting seat for limiting the rotary shaft to turn only within a predetermined angle.

[0012]According to still another aspect of this invention, a window blind assembly is adapted to be sandwiched between front and rear transparent plates. The window blind assembly comprises an outer frame, a blind unit, and a control device. The outer frame is adapted to be placed between the front and rear transparent plates, and includes ahead rail, a bottom rail, and two opposite vertical rails one of which is connected to right ends of the head and bottom rails and the other one of which is connected to left ends of the head and bottom rails. The head rail defines a horizontally extending first receiving space. One of the vertical rails defines a vertically extending second receiving space in spatial communication with the first receiving space. The blind unit is disposed within the outer frame, and includes a plurality of slats, and a slat ladder supporting the slats. The control device includes a lift cord for raising and lowering the slats, a turning cord unit for turning the slats, and a control member connected to both of the lift cord and the turning cord unit. The control member is operable to slide upward and downward along the second receiving space so as to control both of the lift cord and the turning cord unit, and has an interior sliding portion disposed slidably within the second receiving space, and an operating portion projecting outwardly from said one of the vertical rails.

Problems solved by technology

1. The user has to operate separately the slat angle adjustment rod 7 and the lift cord 9 to accomplish adjusting the angular position of the slats 3 and the raising or lowering of the slats 3, respectively. This renders the conventional window blind inconvenient to use.

2. The slats 3 are exposed and unsecured so that they are not only easily covered with dust and dirt, but also, together with the bottom rail 2, are easily blown by the wind and bump into a window frame.

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