JPH0446477Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a lifting device for a Venetian blind built into a double-glazed window.

[Prior Art] The conventional method for raising and lowering a Venetian blind built into a double-glazed window is to pull out a lifting cord whose lower end is fixed to a bottom rail through a locking mechanism, similar to ordinary Venetian blinds. Either the lifting cord is pulled to raise the blind, the locking mechanism is activated to stop the blind, and the locking mechanism is loosened to lower the blind by its own weight, or the method disclosed in Japanese Utility Model Application No. 60-37595 As shown in the figure, rotating shafts are installed at the top and bottom of the double-glazed window, and the upper and lower belt pulleys are fixed to the upper and lower rotating shafts, and belts are hung on the upper and lower belt pulleys, and one end of the lifting cord is fixed to the belt. However, a handle was provided to rotate the upper rotating shaft, and the blind was raised and lowered by rotating the handle.

[Problems to be solved by the invention] The method of pulling out the lifting cord has the problem that the lifting cord that has been pulled out for a long time gets tangled and makes the appearance bad. The system in which a lifting cord is fixed to a belt and the belt is run using a handle requires a belt mechanism, resulting in a complicated structure and high cost.

This invention was made to solve the above problem, and its purpose is to pull the lifting cord out of the double-glazed window, and to install a belt mechanism inside the double-paned window. To provide a blind lifting/lowering operating device that does not require

[Means for Solving the Problems] In order to achieve the above object, the features of the present invention are as shown in FIG.
A vertical groove 16 is provided in the vertical frame 14 of the slider, and a slider 40 is fitted into the vertical groove so as to be vertically slidable but not horizontally movable.A lifting cord 34 is hooked onto the slider so as to be able to be pulled, and a vertical groove 16 is provided at the bottom of the slider. A key 46 is provided with a recess 44, a cylindrical or spherical rolling element 50 is placed inside the recess, and the rolling element can be pushed up to a portion above the recess where the width in the horizontal direction is larger than the diameter of the rolling element. This is because we have established

[Function] The load of the bottom rail 30 is always applied to the slider 40 via the lifting cord 34, and exerts a lifting force on the slider 40. If the key 46 is not in the position to push up the rolling element 50, the rolling element 50 will enter the wedge-shaped cavity formed between the recess 44 of the slider 40 and the inner surface of the vertical groove 16, preventing the slider 40 from rising. The bottom rail 30 stops without descending.

When the key 46 is in the position to push the rolling element upward, there is nothing to prevent the slider 40 from rising, so the slider 40 rises and the bottom rail 30 descends under its own weight.

When the slider 40 is lowered by hand against the load of the bottom rail 30, regardless of the position of the key 46,
Since the rolling element 50 moves above the wide concave portion 44, the slider 40 descends and the bottom rail 30 rises.

In this way, by changing the position of the key 46, the blind is lowered and stopped, and by lowering the slider 40, the blind is raised.

[Example] The apparatus of the present invention will be described in detail based on an example shown in the drawings.

As shown in FIGS. 1 and 2, a head box 20 of a veneer blind built into a double-glazed window 10 is fixed to an upper frame 12 via a bracket 22. As shown in FIGS.

A rotating shaft 24 is rotatably supported by the head box 20, and a drum 26 is fixed to the rotating shaft. The upper end of a ladder cord 28 is hung around the drum 26, the ladder cord 28 hangs down from the head box 20, and the lower end is fixed to the bottom rail 30. The ladder cord 28 supports the slats 32 in a stepped manner.

A lifting cord 34 hangs down from the head box 20, passes through the slat 32, and its lower end is fixed to the bottom rail 30. The upper end of the lifting cord 34 is pulled out into the vertical groove 16 of the vertical frame 14 through the guide roll 25 in the head box 20, and then hung on the pulley 42 of the slider 40 disposed in the vertical groove 16 before being pulled out into the head box 20 or the upper part. Frame 12
It is fixed to.

The vertical groove 16 of the vertical frame 14 has a U-shape in cross section,
The front opening becomes narrower with both ends bent inward. The slider 40 is fitted into the vertical groove 16 so that it is vertically slidable but substantially horizontally immovable. The pulley 42 is rotatably attached to the groove 41 in the upper center of the slider 40 via a pin 43. A trapezoidal recess 44 tapering downward is provided on the back surface of the slider 40, and a rolling element 50 such as a roll or ball is placed in the recess 44. The distance between the recess 44 and the inner surface of the vertical groove 16 is larger than the diameter of the rolling element 50 in the upper half of the recess 44, but smaller in the lower half.

A stepped hole 45 is drilled from the front of the slider 40 into the lower half of the recess 44, and a key 46 in the form of a headed pin is inserted into the hole. The key 46 is always pushed toward the front by a spring 47 inserted into the stepped hole 45. As shown in FIG.
When pushed in against the spring 47, its tip pushes the rolling element 50 up into the upper half of the recess 44, as shown by the arrow. The slider 40 is provided with a knob 48 that projects from the front opening of the vertical frame 14.

Next, the operation of raising and lowering the blind using the apparatus of the present invention will be explained.

When the knob 48 is manually depressed, the slider 40 descends along the vertical groove 16. Since the lifting cord 34 is hung on the pulley 42 of the slider 40,
The bottom rail 30 rises twice as far as the slider descends. Therefore, the vertical groove 16 of the vertical frame 14
The length of the window can be half the vertical distance of the blind.

When the knob 48 is released, the slider 40 receives a lifting force due to the load of the bottom rail 30, but the rolling element 50 enters the lower half of the recess 44.
Since the slider 40 is prevented from rising, the bottom rail 30 stops at that position.

When the head of the key 46 is continued to be pressed, the rolling element 50 is pushed up into the upper half of the recess 44 by the tip of the key 46, so the slider 40 can move up and down freely, the bottom rail 30 descends under its own weight, and the slider 40 It is pulled up by the lifting cord 34. When the hand is released from the head of the key 46, the key 46 is returned by the spring 47, and the rolling element 50 again enters the narrow lower half of the recess 44 to prevent the slider 40 from rising.
0 will stop at that position.

In this way, by simply operating the knob 48 and key 46, the Venetian blind built into the double-glazed window can be raised and lowered and stopped at any desired position.

As an example, the lifting cord is hung on the pulley of the slider and fixed to the head box or upper frame. However, if the length of the vertical groove of the slider is the same as the lifting distance of the blind, the upper end of the lifting cord can be fixed to the head box or upper frame. It is also possible to attach it to the slider.

[Effects of the invention] As mentioned above, the device of the present invention eliminates the need to pull the lifting cord out from the double-paned window for a long time, unlike conventional devices, and also provides a belt mechanism inside the double-paned window. Since it is not necessary, there is no risk of the appearance becoming unsightly, and the structure is simple, the cost is low, and the operation is simple.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an apparatus according to an embodiment of the present invention. For ease of understanding, the vertical frame portions are shown in vertical cross sections perpendicular to the glass surface, and the other portions are shown in cross sections parallel to the glass surface. show. FIG. 2 is a partially cutaway front view showing a main part of a double-glazed window equipped with the device shown in FIG. 1, and FIG. 3 is a sectional view showing the first movement of the slider shown in FIG. In the figure, reference numeral 10 is a double glass window, 12 is an upper frame, 14 is a vertical frame, 16 is a vertical groove, 20 is a head box, 30 is a bottom rail, 34 is a lifting cord, 40 is a slider, 42 is a pulley, and 44 is a recess,
46 represents a key, and 50 represents a rolling element.

Claims (1)

[Claims for Utility Model Registration] 1. A headbox attached to the upper frame of the double-glazed window, a bottom rail suspended from a lifting cord hanging from the headbox, and a vertical frame on the side of the double-glazed window. A device comprising a vertical groove provided in the vertical groove and a slider fitted into the vertical groove so as to be vertically slidable but not movable in the horizontal direction, the slider pulling the lifting cord to raise and lower the bottom rail, A trapezoidal recess that tapers downward when viewed from the side of the slider is formed on the back surface of the slider, and the space between the recess and the inner surface of the vertical groove is formed in a horizontal direction when viewed from the side of the slider. A cylindrical or spherical rolling element having an outer diameter larger than the minimum width and smaller than the maximum width is inserted, and a key penetrating the recess from the front of the slider is provided so as to be adjustable in displacement between an entry position and an exit position. When the key is in the entry position, the rolling element is pushed up into the air above the recess, which is wider than its outer diameter, and when the key is in the exit position, the rolling element is pushed up into the air above the recess, which is narrower than its outer diameter. A lifting/lowering operating device for a blind built into a double-glazed window, which is characterized by shifting to the sky below the recess. 2. The lifting/lowering operation device for a blind with a built-in double glass window as claimed in claim 1, characterized in that a spring is provided for pressing the key to the exit position. 3. The scope of the utility model registration claim characterized in that the upper end of the lifting cord is hung on a pulley rotatably attached to a slider and then fixed to a head box or a part of a double-glazed window. The lifting/lowering operation device for a blind with a built-in double-glazed window according to item 2. 4. The lifting/lowering operation device for a blind with a built-in double-glazed window as set forth in claim 1 or 2 of the utility model registration claim, characterized in that the upper end of the lifting cord is directly fixed to the slider.