JPH0354549Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a device for tilting the slats of a Venetian blind.

[Prior art] The slats of a Venetian blind are supported by a ladder cord, and the two upper ends of the ladder cord are locked to a tilting frame that is rotatably held on a tilting shaft, and the slats are tilted by rotation of the tilting shaft. .
The tilting axis is as disclosed in Utility Model Publication No. 56-46466,
By a cord through a pulley or
As disclosed in No. 27399, it was rotatably driven by a rod via gears or the like. Both cords and rods are useful when the headbox is in a high position that is difficult to reach, but cords and rods are not necessarily convenient for operation when the headbox is in a low position that is easily accessible. In fact, I was starting to feel anxious.

[Problems to be solved by the invention] The present invention has been made in view of the above, and its purpose is to provide a slat tilting device that does not require a cord or rod to hang down from a head box. .

[Means for Solving the Problems] In order to achieve the above object, the feature of the present invention is to attach a cylindrical body with a diagonal groove carved on the surface to the tilting shaft, and to provide a projection that fits into the diagonal groove. The lever is provided so that it can be slid from the outside in the longitudinal direction of the head box. It is desirable that the cylindrical body be supported by a bearing body, that the bearing body be provided with a window projecting outward from the opening on the front surface of the headbox, and that the lever be slidably attached to the window in the longitudinal direction of the headbox.

[Operation] When the protrusion fitted in the diagonal groove of the cylindrical body fixed to the tilting shaft is slid in the longitudinal direction of the head box, that is, in the axial direction of the tilting shaft, the tilting shaft rotates, so that the tilting frame held on the tilting shaft rotates. The slope changes, and the ladder cord hanging from the tilting frame shifts in the front and back direction.
The slats supported by the ladder cord tilt. Therefore, the slat can be tilted by sliding the rubber provided with the protrusion. Since there are no cords or rods hanging down from the head box for tilting the slats, the appearance is very clean.

[Example] The apparatus of the present invention will be explained based on an example shown in the drawings. As shown in FIGS. 1 and 2, a longitudinally extending tilting shaft 12 is supported within the headbox 10. As shown in FIGS. A tilting frame 1 is attached to the tilting shaft 12.
4 is held so as to be integrally rotatable, and the front and rear upper ends of the ladder cord 16 are locked to the tilting frame. The ladder cord 16 passes through the bottom hole of the head box 10 and hangs down. The ladder cord 16 supports each slat 20, and its lower end is locked to the bottom rail 22. The lower end of the lift cord 24 is locked to the bottom rail 22, and the lift cord 24 passes through each slat 20, enters the head box 10, passes through the cord lock 26, and is pulled out to the outside of the head box 10 again. The lift cord 24 is operated to raise and lower the blind, that is, to open and close it.

An opening 30 is formed in the front of one side of the head box 10, a window 34 of a bearing body 32 is seen through the opening, and a lever 36 projects from the window. A cylindrical body 40 fixed to the tilting shaft 12 is rotatably supported on the bearing body 32, and a diagonal groove 42 is carved on the circumferential surface of the cylindrical body. The protrusion of the lever 36 fits into the oblique groove 42. The bearing body 32 is malely fixed to the headbox 10.

As shown in FIG. 3, the diagonal groove 42 on the circumferential surface of the cylindrical body 40 fixed to the tilting shaft 12 has a spiral shape, and the lever 36 provided with the protrusion 38 is provided with sliders 44 on the upper and lower sides. A cylindrical body 40 is attached to the bearing body 32.
Before inserting the lever 36, the lever 36 is inserted into the hollow part 48 of the bearing body 32, and the slider 44 of the lever is pushed into the upper and lower grooves 46 of the bearing body using elastic deformation. When pushed in, the lever 36 protrudes from the window 34 of the bearing body 32 and slides freely in the longitudinal direction. Next, the cylindrical body 40 is inserted into the hollow part 48 of the bearing body 32, and the protrusion 38 of the lever 36 is fitted into the oblique groove 42 of the cylindrical body 40. Diagonal groove 42
Since the protrusion 38 engages with the cam and the cam groove, when the lever 36 is slid from side to side, the cylindrical body 40 and the tilting shaft 12 integrated therewith rotate. Therefore, the slat can be tilted by sliding the lever.

The tilting frame and ladder cord are set so that when the lever 36 is at the center of the window 34, as shown in FIG. 4a, the slat 20 is horizontal, as shown in FIG. 4b. When the lever 36 is moved to the left and right sides of the window 34 as shown in FIGS. 5a and 6b, the slat 20 is tilted forward or backward to its maximum extent, as shown in FIGS. 5b and 6b.

[Effects of the invention] As mentioned above, the device of the present invention can easily adjust the tilting of the slats by simply sliding the lever seen through the window on the front of the head box from side to side. Since the cords and rods for tilting the slats do not hang down from the head box, a special effect of a very clean appearance can be obtained. Therefore, it can be said that it is particularly suitable for Venetian blinds that are installed at a height that the head box can reach.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a part of a Venetian blind equipped with a device according to an embodiment of the present invention, Fig. 2 is a front view of the blind shown in Fig. 1, and Fig. 3 is an exploded perspective view of the main parts. Figures 4a, b to 6a,
b is a schematic diagram showing the relationship between the inclination of the lever and the slat. In the figure, numeral 10 is a head box, 12
is a tilting shaft, 20 is a slat, 30 is an opening, 32 is a bearing body, 34 is a window, 36 is a lever, 38 is a protrusion,
40 is a cylindrical body, 42 is a diagonal groove, 44 is a slider, 4
6 indicates a groove, respectively.

Claims (1)

[Claims for Utility Model Registration] 1. A Venetian blind in which the slats are tilted by rotating a tilting shaft supported on a head box, including a cylindrical body rotatably attached to the tilting shaft, and a cylindrical body engraved on the circumferential surface of the cylindrical body. a spiral diagonal groove; a bearing body fixed to the head box and bearing the cylindrical body; and a protrusion that is slidably attached to the bearing body in the axial direction of the cylindrical body and engages with the diagonal groove. A slat tilting device for a Venetian blind, characterized by comprising a lever and a lever. 2. The Venetian blind according to claim 1, wherein the bearing body is provided with a window that can be seen from the front opening of the head box, and the lever is slidably attached to the window and protrudes to the outside. Slut tilting device. 3. The bearing body is provided with upper and lower grooves on the inside of the window, and the lever is provided with a slider that is slidably fitted into the groove,
3. The slat tilting device for a Venetian blind according to claim 2, wherein the slider is inserted into the groove using elasticity change.