JPH0536070Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to an improvement of a vertical blind in which each slat, which is vertically supported at a predetermined interval on a horizontal guide rail, is opened and closed in a foldable manner in conjunction with each other. It is.

[Prior art and its problems]

Figure 3 is a perspective view of a conventional vertical blind;
FIG. 4 is a cross-sectional view taken along the line 1, in which the guide rails 1U and 1D are arranged horizontally on the upper and lower sides, respectively.
Each slat 2 is connected to a guide rail by a plurality of slats 2, 2, . A link mechanism is formed along 1U and 1D to enable folding and interlocking.

At the upper and lower ends of each slat 2, a pin insertion hole 4 is formed at the center and left end, respectively, for fixing a connecting rod attachment pin P that goes around the connecting rod 3 and is attached in pairs, and a guide hole 4 is formed at the right end. The roller 5 running on the rail 1U is the guide rail 1
A roller (not shown) running along D is attached.

As each pin P, as shown in FIG. 4, a tap screw 6 is used which is screwed into the inner peripheral surface of the pin insertion hole 4 while being threaded, and the connecting rod 3 and the slat 2 attached by the tap screw 6 are used. A slight clearance C is provided between the upper end or the lower end of.

A vertical blind constructed in this manner had the problem that when it was in the closed state and received wind from the direction of the arrow _F1 shown in Figure 3, each slat 2 would rotate in the direction of the arrow _F2 around the right end portion supported by the guide rails 1U and 1D as a fulcrum, and would open by itself to the position shown in Figure 3 due to the influence of the wind.

For this reason, conventionally, each slat 2,
2. Using a nail-shaped stopper fitting 7 that presses and fixes a specific slat 2X from the inside, when the blind is closed, the stopper fitting 7 fixed to the slat 2X is attached to the guide rail 1D. It is dropped into a through hole 8 bored in the upper surface.

However, in this case, in order to allow the stopper fitting 7 to fall into the through hole 8 reliably while allowing for some positional deviation, the through hole 8 is made horizontally long along the longitudinal direction of the guide rail 1D. slats 2X and 2,
2... vibrates due to the wind, the stopper metal fitting 7 vibrates within the through hole 8 in response to this, resulting in a problem in that it generates a harsh noise.

Further, the stopper fitting 7 was exposed inside the blind in the closed state, resulting in a very unsightly appearance.

Furthermore, since the stopper fitting 7 is dropped into the through hole 8 drilled at a predetermined position to fix the slat 2X, the blind can be fixed in the fully closed state, but it can be fixed in the half-open state. It has the disadvantage that it cannot be fixed in position.

[Purpose of invention]

Therefore, the present invention allows each slat to be held in the fully closed state without using the stopper fitting 7, etc., which generates a harsh noise when the slats held in the closed state vibrate due to the wind, and also has an unsightly appearance. To provide a vertical blind that can be securely held and fixed not only in a half-open state but also in any state such as half-open.

[Structure of the idea]

To achieve this objective, the present invention proposes a vertical blind in which a plurality of slats vertically supported at predetermined intervals on a horizontal guide rail are connected by connecting rods forming a rage-tongue linkage. A connecting rod attachment pin that rotatably attaches the connecting rod to the lower end of the slat has a male threaded portion inserted into a pin insertion hole formed in the longitudinal direction from the lower end of the slat, and a head that supports the connecting rod. A nut screwed into the bolt is rotatably fitted into a notch formed by cutting out a part of the slat.

[Effect of invention]

In the vertical blind according to the present invention, for example, when the nut is rotated in the direction of tightening the bolt in the closed state, there is no clearance between the connecting rod attached to the slat by the bolt and the lower end of the slat. The connecting rod is fixed integrally with the slat and cannot rotate.

As a result, all the slats that are interlocked by a link mechanism consisting of connecting rods and slats are held and fixed in the closed state, and the blind will not open by itself even if each slat is exposed to wind. Unlike conventional blinds, even if the blinds vibrate in response to vibrations, they do not produce harsh noises and do not spoil the appearance of the entire blind. Furthermore, the blind can be fixed at any position not only in a fully closed state but also in a half open state.

Next, when the nut is fixed in the direction of loosening the bolt in this state, a clearance is again formed between the connecting rod and the slat, and the connecting rod is free to rotate, allowing all the slats to be connected by the link mechanism. The blinds can be opened by folding each slat in conjunction with each other.

〔Example〕

Hereinafter, embodiments of the present invention will be specifically described based on the drawings.

FIG. 1 is a perspective view of essential parts of an example of a vertical blind according to the present invention, and FIG. 2 is a sectional view thereof.

Note that parts common to FIGS. 3 and 4 are denoted by the same reference numerals, and detailed description thereof will be omitted.

The vertical blind according to the present invention has a pin insertion hole 4 formed at the lower end of the slat 2X, as shown in FIG.
A bolt 10 into which the male threaded portion 10a can be loosely inserted in a vertically movable manner is used, and a part of the slat 2X is cut out along with a part of the pin insertion hole 4 into which the bolt 10 is loosely inserted. Pin insertion hole 4
A nut 12 is rotatably interposed therein to be screwed into the male threaded portion 10a of the bolt 10 inserted therein.

The connecting rod 3 is formed into a flat plate shape as shown in FIGS. 1 and 2, and has a through hole 13 at its tip, through which the male threaded portion 10a of the bolt 10 is inserted.

The bolt 10 connects the male threaded portion 10a to the connecting rod 3.
The connecting rod 3 is inserted into the through hole 13 of the slat 2X and supported by the head 10b, and the male threaded portion 10a inserted into the pin insertion hole 4 is inserted into the notch 11 of the slat 2X.
The connecting rod 3 is coupled to the lower end of the slat 2X by being screwed into a nut 12 inserted therein.

A non-slip knurling 14 is formed on the circumferential surface of the nut 12, and a flat bearing 15 or the like is provided on the entrance side of the pin insertion hole 4 to support the bolt 10 vertically, as required.

The above is an example of the configuration of a vertical blind according to the present invention, and the operation and effects thereof will be explained next.

Normally, as shown in FIG. 2, a small clearance C is provided between the connecting rod 3, which is supported by the head 10b of the bolt 10 and attached to the lower end of the slat 2X, and the lower end of the slat 2X. Leave the connecting rod 3 free to rotate.

When the blind is fully closed, if you put your finger on the knurl 14 formed on the circumferential surface of the nut 12 and rotate the nut 12 in the direction of tightening the bolt 10, the connecting rod 3 and the lower end of the slat 2X There is no clearance C between them, and the connecting rod 3 is pressed against the lower end of the slat 2X by the head 10b of the bolt 10 and is fixed in a non-rotatable state.

As a result, the connecting rod 3 and the slats 2, 2X
All the slats 2, 2..., which are interlocked by a link mechanism consisting of the following, are held and fixed in a closed state, and the slats 2, 2... are locked so that the blind will not open by itself due to the wind. .

In addition, even if the slats 2, 2... vibrate due to the wind in this state, the stopper fitting 7 (as shown in Figure 3)
Unlike conventional blinds that use blinds, they do not produce harsh noises. Moreover, since only the nut 12 inserted in the notch 11 is exposed on the surface of the slat 2X, the appearance of the entire blind is not spoiled.

Next, when opening the blind from this state, rotate the nut 12 in the direction of loosening the bolt 10 to again form a clearance C between the lower end of the slat 2X and the connecting rod 3, and then open the connecting rod 3. By simply allowing the slats to rotate freely, all the slats 2, 2, . . . are interlocked by a link mechanism, and the blind can be opened while folding each slat.

At this time, by stopping the blind at an arbitrary position and tightening the bolt 10 with the nut 12 again, the blind can be held and fixed in a half-open state.

[Effect of idea]

As described above, according to the present invention, by tightening the nut screwed onto the bolt of the connecting rod mounting pin, the connecting rod and the slat attached to the slat with the bolt are integrally fixed. All the slats interlocked by a link mechanism consisting of connecting rods and slats are held and fixed, and each slat can be fixed in a fully closed state without making noise even if the slats vibrate due to the wind. Further, it has an excellent effect that has never been seen before in that it can be reliably held and fixed in any position not only in a fully closed state but also in a half open state.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of essential parts of an example of a vertical blind according to the present invention, Fig. 2 is a cross-sectional view thereof, Fig. 3 is a perspective view showing a conventional blind, and Fig. 4 is a cross-sectional view taken along the - line. be. Explanation of symbols, 1U, 1D...Guide rail, 2
... Slut, 2X... Specific Slut, 3...
Connecting rod, P... Connecting rod mounting pin, 4...
...Pin insertion hole, 10...Bolt, 10a...Male thread, 10b...Head, 11...Notch, 12...
...Natsuto.

Claims (1)

[Scope of utility model registration request] In a vertical blind in which a plurality of slats 2 vertically supported at predetermined intervals on a horizontal guide rail are connected by a connecting rod 3 forming a rage tongue type link mechanism, the connecting rod 3 is connected to the lower end of any slat. A connecting rod attachment pin P that is rotatably attached has a male threaded portion 10a that is inserted into a pin insertion hole 4 formed in the longitudinal direction from the lower end of the slat, and a head 10b that supports the connecting rod 3. A vertical blind consisting of a bolt 10, characterized in that a nut 12 screwed into the bolt 10 is rotatably fitted into a notch 11 formed by cutting out a part of a slat.