JPH087037Y2 - Blind slats - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a blind without a ladder tape that supports the middle portion of a slat, and more particularly to a blind slat suitable for adjusting the amount of light such as a skylight.

[Prior Art] Conventionally, the most common blind is a suspension type that uses thin aluminum slats. Both ends of the slats are free ends, and the middle part of the slats is for preventing bending. It has been supported by the ladder tape.

[Problems to be Solved by the Invention] However, the functions required for a recent blind have been diversified, and the hanging blinds using the conventional thin-walled aluminum slats cannot meet the demand.

For example, the ladder tape obstructs the field of view when the blind with the slats in a horizontal position is fully opened, and thus a blind without the ladder is required. Further, in recent houses, skylights are often provided along the roof, and in addition to hanging blinds that cannot be attached to skylights, blinds that can be attached to skylights are desired. Furthermore, instead of the conventional thin-walled aluminum slats that completely block outside light when the blinds are fully closed, they allow a soft transmitted light and a certain amount of see-through even when the blinds are fully closed, giving a bright and open feeling. There is also a strong need for blinds using translucent synthetic resin slats.

In order to make a blind without a ladder tape in response to the above-mentioned demand, it is necessary to devise a device that prevents the slats from bending without the ladder tape. Also, in order to be able to attach to the skylight, it is necessary to prevent the slats from bending even when attached to an inclined portion or a horizontal portion. Furthermore,
In order to make a synthetic resin slat, since a synthetic resin slat is more liable to bend than a thin aluminum slat, it is necessary to more carefully devise this deflection.

[Means for Solving the Problems] The present invention is intended to solve the above problems and meet the above demands. To explain the means taken for the present invention with reference to FIG. It is a blind slat 1 made of synthetic resin of 1 mm, and the cross-sectional shape is two flat portions A and B located adjacent to each other in different steps, and a central connecting portion E connecting both flat portions A and B, The protrusions C and D formed at the outer ends of the flat portions A and B form a U-shaped cross section of forward and reverse in series in a concavo-convex shape as a whole, and the flat portions A and B and the protrusion C are formed. The angle α formed by is 100-150 °, and the inclination angle β of the connecting portion E is 10-
The means for making the slat 1 for blinds at 30 ° is taken.

[Operation] FIG. 4 (a) shows the slat 1 in a state in which the slat 1 is most easily deflected when the blind is fully opened. The flat portions A and B play a large part in maintaining the rigidity of the slat 1 in this state, and the second moment of area is larger than the other portions. Further, when the slat 1 is made of a material having a certain degree of transparency, such as a smoke-like material, the flat portions A and B serve to make it easier to see the outside scenery from the room in the blind fully closed state (c). In other words, it works to secure visibility.

That is, the flat portions A and B have a function of maintaining rigidity when the blind is fully opened and a function of ensuring a field of view when the blind is fully closed when a material having a certain degree of transparency is used.

The protruding portions C, D and the connecting portion E reinforce the flat portions A, B to increase the rigidity of the slat 1 in a state where the blind is fully opened (a) to a state where the blind is slightly closed (b) and each state of the transitional period. It acts to hold. The protrusions C and D are the protrusions of the upper and lower slats 1 in the blind fully closed state (c).
The combination of C and D works to effectively seal the direct sunlight.

The predetermined angles α and β in the present invention are for obtaining sufficient rigidity by the projecting portions C, D and the connecting portion E without deteriorating the workability, the appearance and the direct-sealing property of external light.

[Example] As shown in Fig. 1, the left and right frames 3 are provided with slat holders 2 facing each other in the left-right direction and vertically rotatable at regular intervals.

The slat holder 2 is composed of a holder body 5, a mounting portion 6 and a square rod 7.

The holder main body 5 is rotatably housed in the frame 3 with one end protruding toward the inner peripheral side of the frame 3.

The square rod 7 is slidable with respect to the holder main body 5 through a square hole provided at an inner end portion of the holder main body 5 but protrudes toward the inner peripheral side of the frame 3 in a non-rotatable state. The mounting portion 6 is provided at the tip.
The rectangular rod 7 is pressed outward by a spring 8 housed in the holder body 5.

The mounting portion 6 provided at the tip of the square rod 7 is for mounting the end portion of the slat 1 by the slat mounting pin 6a as shown in FIG.
The shape follows the shape of the slat 1.

Inside the frame 3, a large number of slats 1 are provided at equal intervals in the vertical direction. The slats 1 are fixed by mounting the end portions on the mounting portions 6 facing each other on the left and right sides. In addition, as described above, the rectangular rod 7 has the spring 8
As a result, the slat 1 is under tension because it is pressed outwards by. The pressing force of the spring 8 is preferably 300 to 800 g, particularly about 500 g.

The spring 8 has a wide blind (for example, 1 m
It has an auxiliary function of preventing the slat 1 from bending when the width is set to the above. It also has a function of providing a clearance when the slat 1 is attached to the slat holder 2.

The opening / closing means 4 in the blind includes a holder gear 4a formed on the peripheral surface of each holder body 5 and a toothed belt 4b meshing with the holder gear 4a.
The left and right toothed belts 4b are provided with the interlocking gear 9 and the interlocking shaft 10.
It is linked by.

This blind is opened and closed by a motor, etc.
It can be performed by rotating the normal and reverse directions. That is, when the interlocking shaft 10 rotates, the left and right toothed belts 4b also rotate, and the toothed belt 4b and the holder gear 4a mesh with each other, so that the holder body 5 and the mounting portion 6 also rotate,
The angle of the slat 1 will change and it will be opened and closed.

As shown in FIG. 3, the slat 1 of the blind is composed of two flat portions A and B which are adjacent to each other in different steps, a central connecting portion E which connects both flat portions, and outer ends of both flat portions. From the projections C and D formed in the above, as a whole, it has a regular and reverse U-shaped cross section that is connected in series in an uneven shape.

Explaining the size of each part, first, the flat part A, B and the protruding part
The angle α formed by C and D is required to be 100 to 150 ° from the viewpoints of rigidity, appearance and direct sunlight sealing property, and preferably
It is 120 to 135 °.

The inclination β of the connecting portion E is ideally 0 ° from the viewpoint of the rigidity of the slat 1, but in consideration of the workability in the post-processing, etc.
It must be 10-30 °.

In the figure, h is preferably as small as possible because it causes visual field loss when the blind is fully open, but if it is too small, the rigidity of the slat is lost, so 3-5 mm is preferable.

The dimensions of the flat portions A and B, the protruding portions C and D, and the connecting portion E are determined by the functions such as rigidity and the size of the field of view and the product image, but the ratio of the cross-sectional area of A + B and the cross-sectional area of C + D. Is 5 to 1.
It is preferably 5: 1. Particularly preferred is 3 to 1.8: 1. Moreover, the ratio of the cross-sectional area of A + B and the cross-sectional area of E is 10 to
It is preferably 3: 1. Particularly preferably, it is 6 to 4: 1.

The material used for the slat 1 of the present invention is a synthetic resin, but a synthetic resin having a relatively small elastic modulus can be used particularly effectively. Examples of the synthetic resin include methacrylic resin (PMMA), polycarbonate (PC), vinyl chloride resin (PVC), polyester (PET), polyoxymethylene (POM), nylon (Ny6, Ny66) and the like.

When a brittle material such as methacrylic resin and polyester are used, it is preferable to use a material whose physical properties are enhanced by stretching.

The slat 1 is produced by molding a synthetic resin thin plate material. The plate thickness of the material used must be 0.05 to 1.0 mm in order to obtain the required rigidity and to obtain soft transmitted light and a certain degree of transparency even in the fully closed state,
It is preferably 0.2 to 0.6 mm.

FIG. 5 shows a second embodiment of the opening / closing means. The opening / closing means of FIG. 5 includes an arm 4d having a long groove 4c and a long groove 4c.
The opening / closing lever 4f is provided with a pin 4e that slides in 4c.

The arm 4d is fixed to one end of the holder body 5,
When the opening / closing lever 4f slides in the vertical direction, the pin 4e pushes the arm 4d while sliding in the long groove 4c, whereby the slat holder 2 is rotated.

FIG. 6 shows a third embodiment of the opening / closing means. The opening / closing means of FIG. 6 includes a projecting portion 4g provided at one end of the holder body 5 and fixed to both sides of the projecting portion 4g. In addition, it is composed of an opening / closing string 4i fixed by being hung on the opening / closing roller 4h.

In the case of this opening / closing means, when the opening / closing roller 4h is rotated in the forward and reverse directions, one side of the projecting portion 4g is pulled up, whereby the slat holder 2 is rotated.

[Effects of the Invention] The present invention is as described above and has the following effects.

According to the present invention, rigidity is imparted by the cross-sectional shape of the thin synthetic resin slat 1 without sacrificing its appearance, workability, and direct sunlight sealing performance, so that it is possible to prevent the thin slat 1 from bending. Therefore, by using this slat 1, it is possible to provide a bright and open blind that allows soft transmitted light and a certain amount of see-through even in the blind fully closed state.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a blind using a slat according to the present invention, FIG. 2 is a perspective view showing a mounting state of the slat, FIG. 3 is an enlarged sectional view of the slat, and FIG.
FIGS. 5A to 5C are explanatory views of the action based on the sectional shape of the slats, and FIGS. 5 and 6 are views showing other embodiments of the opening / closing means. A, B: flat part, C, D: protruding part, E: connecting part, 1: slat.

Continuation of the front page (72) Inventor Nobuo Iwata 4061-6 Nakatsu, Aikawa-cho, Aiko-gun, Kanagawa Prefecture Nichibei Development Co., Ltd. (56) Bibliography Sho 49-88542 (JP, U)

Claims (2)

[Scope of utility model registration request] 1. A blind slat made of synthetic resin having a thickness of 0.05 to 1 mm, the cross-sectional shape being two flat portions positioned adjacent to each other in a stepwise manner, and a central connecting portion connecting both flat portions. From the protrusions formed on the outer ends of both flat portions, as a whole, a forward and reverse U-shaped cross-sectional shape is formed in a concavo-convex shape, and the angle α formed by the flat portion and the protrusions is 100 to 150 °, The blind slat, wherein the inclination angle β of the connecting portion is 10 to 30 °. 2. The ratio of the total sectional area of both flat portions to the total sectional area of both protruding portions is 5 to 1.5: 1, and the ratio of the total sectional area of both flat portions to the connecting portion is 10 to 3: 1. The blind slat according to claim 1, wherein