JPH02256784A - Louver screen - Google Patents

Abstract

PURPOSE: To surely provide a synchronous rotation by installing each one end of several blades to a first frame material, adjustably installing the other end to a second frame material, and holding intermediate blades in such a state as freely rotating about a longitudinal shaft by a support tension of a fixing tool. CONSTITUTION: A louver screen 2 is provided with an upper frame part 4 covered with a cover member 6, a lower frame material 8 covered with a cover member 10, a lateral frame material 12 covered with a lateral cover member 14, and a plurality of blades 16 arranged in parallel to each other. A control rod 20 is provided one end or the both ends of a screen device and attached to the frame material rotatably about a shaft center and respective ends of cross wires 24 are fixed to the tips of tabs 22 provided to the rod 20 spaced at constant intervals. The respective cross wires 24 are connected to the all of the blades 16 so that the screen is opened/closed by the simultaneous rotational movement of the blades 16 following to the movement of the control rod 20. By this constitution, the blades can firmly be fixed.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is a louver screen for sunshades, which is a mechanism that can be attached to the outside or inside of a room to partition a room, such as a window or skylight. In particular, the present invention relates to an improvement of a louver screen, which is a blind with movable louvers. More specifically, the present invention is a louver screen for sunshades that uses rotary louvers, and by assembling the units, the applications of the screen can be expanded as a blind. More specifically, the blind of the present invention has a number of blades, that is, louvers, which rotate on a vertical axis, connected in parallel. For example, a vertical Venetian blind is an example of its application. In particular, an application called a mini-blind is a popular form of the invention.

(Prior Art) When a conventional louver screen is attached to a window, etc., it effectively blocks solar heat when set to the "closed" position, and allows sunlight to pass through when set to the "open" position.

Therefore, the amount of light passing through can be adjusted by changing the angle of the louver.

In the case of conventional louvered screens, even when fully open, there is a significant amount of blocked or shaded area, so the amount of solar heat passing through and The problem lies in the fact that the maximum amount of sunlight is reduced. This problem is particularly noticeable in the case of wide or thick louvers. This problem can be solved by using very thin louvers, which are almost invisible when fully open, and the maximum amount of radiant heat that passes between them is extremely small. Only a small amount is reduced.

(Problem to be solved by the invention) Therefore, the efficiency of this mini louver is very good.

However, such a mini louver has a relatively light structure and is therefore vulnerable to vibrations caused by wind or the like.

For example, due to strong winds, mini louvers are often bent or dislodged, which can cause damage. Therefore, there is a need to provide a compact louver that is strong in itself and has a securely fixed support.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a sturdy, tension-secured mini-louvered screen.

(Means for Solving the Problems) One of the features of the present invention is that it includes at least one connecting means that can simultaneously open and close blades arranged in parallel. Each blade is fastened to the frame at one end by a fastener and at the other end by an adjustable and sufficiently resilient fastener, but the blade is free to rotate along its longitudinal axis under the action of the coupling means. It is supposed to be done.

However, since a predetermined tension is maintained along the longitudinal direction, deformation from parallel lines is less likely.

Another feature of the invention is that the first frame member and the second frame member are provided with a plurality of parallel elongated blades spaced therebetween, and the first frame member and the second frame member are spaced apart. the blades are parallel to each other and perpendicular to the axis of the blades, and further include a connecting means for connecting a plurality of blades for simultaneous operation of each blade, and connecting means for connecting each blade simultaneously about its longitudinal axis. A louver screen is provided having a control mechanism for controlling the operation of the coupling means to rotate the screen. Each blade is secured to the frame member by a fixture that applies constant tension to the blade in the direction of its longitudinal axis so that the blade is under tension in use.

A blind or screen that is adjustable such that a plurality of blades rotate between fully closed and open positions is typical. The blade is usually made of metal, preferably stainless steel. However, the blade may be made of any suitable material, such as aluminum or plastic, and may have a variety of finishes.

A typical blade configuration is a "sandwich" structure, with a middle layer of rubber and both outer layers made of metal. In this case, the metal layer is glued to the rubber layer with an adhesive. The blade may be mounted centrally or off-center, for example.

The connecting means usually consists of wire or an elongated metal strip. The wire is wound into a spiral, and openings are provided at regular intervals in the axial direction. The elongated metal strip has a circular cross-section and is provided with openings at regular intervals along its axis. An opening is provided in the flattened portion of the wire. Whatever the construction, the coupling means are usually located behind the screen so that they are completely or partially hidden in the blade.

Typically, the blades are so thin that their ends overlap so that they are nearly invisible when open and completely occluded when closed. The blade is usually 15 cm wide and 12 to 1 cm wide.
Mainly around 3m. A screen or blind according to the invention is mounted on the outside of a window.

(Example) The present invention will be explained below based on examples.

In FIG. 1, the louver screen 2 of the present invention includes an upper frame member 4 covered with an upper decorative band member or cover member 6, and a lower decorative band member or cover member 10 covered with a lower frame member 4. The lower frame member 8 covered by the horizontal cover member 14, the horizontal frame member 12 covered by the horizontal cover member 14, and the upper frame member 4 so as to constitute a set of armor plates.
, and a plurality of blades 16 arranged in parallel with each other with the lower frame member 8 as a horizontal axis. Horizontal frame material 12
Although only one side of the cover member 14 is shown in FIG. 1, a horizontal frame member and a cover member of similar construction are provided on the opposite side. In FIG. 1, the configuration on the opposite side is omitted to show the operation of an example of the control means. An example of the control means is the control rod 2o.

The control rod 20 is provided at one end or both ends of the screen device of the present invention, and is rotatably attached to the frame member. The control rod 20 is provided with suitable means (not shown) for controlling the control rod 20 so as to rotate about its axis, as indicated by arrow A in FIG. The control rod 20 has
For example, three tabs 22 are provided at regular intervals, and a cross wire 24 is attached to the tip of each tab 22.
One end of is fixed. Although only three sets of tabs 22 and cross wires 24 are shown in this embodiment, the screen device of the present invention may include any number of tabs, controls, and wires. Each cross wire 2
4 is connected to all of the plurality of blades 16, and each blade 16 is rotated in unison by the operation of the cross wire 24 according to the operation of the control rod 20, and as a result, the screen is opened or closed.

Other embodiments of control rod 20 are shown in FIGS. 5 and 6. In the embodiment shown in FIG. 5, the distal end of the cross wire 24a is wrapped around the control rod 20a several times. In the embodiment shown in FIG.
A plurality of axially spaced holes are provided in the blade-shaped control rod 20t) to hold the distal end of the wire 24b.

The distal ends of the cross wires 24b are attached by suitable attachment means such as ferrules, collets, or the like. At both ends of the blade-shaped control rod 24b are provided shafts 28a and 28b, each shaft Ha and 21 being inserted into mutually aligned holes in the upper and lower frame members 4 and 8.
1b is fitted, and the blade-shaped control rod 20b is rotated.

The method for installing the blade 16 will be described below. Three embodiments of blade 16 are shown in FIGS. 2-4. In the embodiment shown in FIG. 2, the blades 16a are connected at upper and lower ends by collars 30a and 30b provided at positions offset from the central axis.

Each collar 30a and 30b has a support
Wires 32a and 32b are tightly attached. The upper support wire 32a is connected to the blade 16
is held through an opening 34a in the lower surface of the frame member 4 in order to fix the upper end of the frame member 4 in place. Attached to the upper end of the support wire 32a is a ferrule 36a and a washer 38a, with the washer 38a providing a bearing and attachment for the end of the wire 32a.

Therefore, the wire 32a is firmly fixed to the upper frame member 4 by the ferrule 36a and the washer 38a, and forms a support pivot for the blade 16a, allowing it to rotate freely.

Support wire 32b is provided at the lower end of blade 16a, and one end is attached to the lower end of blade 16a by collar 30b. Hole 3 in lower frame material 8
The other end of the wire 32b that passed through the ferrule 3
6b and washer 38b, it has a helical compression spring 40. The helical compression spring 40 is more or less
held in a compressed state. As a result, the blade 16a
is stretched between the upper and lower frame members by constant tension due to the force of a helical compression spring 40. compression spring 4
The tension applied by 0 is adjusted by adjusting the position of the ferrule 36b and washer 38b to be coaxial with the support wire 32t). Cross wire retaining clips 42 are positioned at regular intervals along the axis of blade 16 for coupling to cross wires 24 . The clip 42 may have an appropriate shape. Its typical shape is detailed below.

Other embodiments of blade 16 are shown in FIGS. 3 and 4. The method of fixing the blade 16b shown in FIG. 3 to the upper frame member 4 and the lower frame member 8 is the same as that of the blade 15a of the embodiment shown in FIG.

However, the blade 15b of this embodiment is narrowed at the upper and lower ends, and in this way the ferrule 46a
, 46b are each surrounded by a conical shape.

The conical end of blade 16b is crimped or otherwise secured to the ferrule.

In the embodiment shown in FIG. 4, blade 16c is provided with flanges 50a and 50b at each end. Each flange end of the blade 16c has a
Keyholes 52a and 52t) are provided.

The ferrules 54 a and 54 b provided at the respective ends of the support wires 32 a and 32 b are
They are held through the circular openings of the keyholes 52a and 52b, respectively, and are locked in the elongated holes of the keyholes 52a and 52t, respectively. A ferrule 36b1 and an optional washer are provided at the lower end of the lower support wire 32b to securely fix the support wire 32b in place.

The blade 16c is attached to the upper frame member 4 at its upper end.
Adjustably or resiliently attached. The upper end of the support wire 32a is held in a hole 56 extending transversely through a hoist 58, and as the hoist 58 rotates, the blade 1
The tension applied to 6c is adjusted. The hoist 58 is installed within the upper frame member 4 in any suitable or conventional manner.

7 and 8, the blade 16C1 flange 50
, the keyhole 52, and these features for tightly integrating the support wire and the blade are shown in more detail. The ferrule 54 is inserted into the circular opening of the keyhole 52 so as to be perpendicular to the vertical long plate of the blade 16c, and is rotated 90 degrees as it is moved in the longitudinal direction of the long hole 52. , is locked in the use position parallel to the blade 16c.

9, 10, and 11, retaining clip 42
An example of this is indicated by the number 42a. The retaining clip 42a is comprised of a hook portion 60 and a helical compression spring portion 62. Hook portion 60 extends from blade 16c in use, and spring portion 62 pinches the end of blade 16. The spring portion 62 may be held by a compressive force, such as in the embodiment according to FIG. This may be maintained by providing indentations 64 at appropriate locations on the ends of the blades 16 to ensure that the blades 16 are in the same position as possible. The position of the clip 42a is determined by placing the recess 64 in the hole of the spring portion 62.

In FIG. 12, another example of the clip 42 is shown as clip 42b. The first knob 42b is composed of a hook portion 66 and a shaft portion 68.

A hook 66 extends from the end of the blade 16 to be connected to the cross wire 42, and the shank portion 68 is retained in the aligned cuts 70. Each notch 70 is used to hold the clip in place on the shaft portion 6.
A hole is formed in each blade 16 so as to form a pair of spaced apart holding means for tightening or holding the circumference of the blade 16 .

Two embodiments of the cross wire 24 are shown in FIGS. 13 and 14. The cross wire 24a shown in FIG. 13 is constituted by an elongated wire having openings 72 provided at regular intervals in the axial direction. The spacing of the openings 72 corresponds to the spacing of the hook portions of the clip 42, and the spacing of the clip 42 corresponds to the spacing of the hook portions of the clip 42 such that the blades 16 rotate in unison when the wire 24 is actuated in use.
is held in the opening 72.

An opening 72 is made in a flattened portion 75 of wire 24a.

Another embodiment of cross wire 24 is shown in FIG. 14 as wire 24b comprised of two wires 74, 76 twisted together.

The open lower portion 8, which is formed by the wires 74 and 76 and is provided at a predetermined interval, is formed so that the wires are spaced slightly apart from each other than in the tightly twisted portion. The hook portion of the clip 42 is fitted into the opening lower part 8 so that the blades work together when the cross wire 24 is operated.

Figure 15 shows the controls for the louvers or blades.
Another embodiment of a clip 80 for securing to a wire is shown. The clip 80 is formed from a flat thin metal plate. The clip 80 has peripheral arms 82.8 arranged in a rectangular manner defining an aperture 90.
4.86.88. Arm 88 is angled in relation to the other arms according to one embodiment, with a gap 92 provided between arms 88 and 82. A control wire or the like is inserted through the gap 92 into the rectangular opening 90 in use.

Arm 88 moves to close gap 92 to securely secure the center wire to clip 80. As shown in FIG. 15, the clip 80 is spot welded to the arm 86 and the end of the louver.

FIG. 16 shows a wave spring 100, which is another method of tensioning the louver. The wave spring 1
00 includes a plurality of parallel cuts 10 spaced apart to hold the ends of the tension caples 104 connected to the louvers.
2 is provided. In the second stage of the wave spring 100, a plurality of second cuts 106 are also cut at regular intervals in order to hold the tension caples 104. The spring 100 is firmly fixed to the frame portion of the screen.

Although the present invention will be described with particular reference to a solar screen having a plurality of narrow rotating blades or louvers that can be assembled to form a screen or blind, it is limited only to the arrangement described herein. It should also be noted that there are various other mechanisms not specified herein that are within the scope of the invention. Furthermore, the present invention is applicable to other types of screens and products to which they are applied.

(Effects of the Invention) As described above, in the louver clean of the present invention, each blade is firmly fixed, and all blades are reliably rotated in synchronization.

FIG. 1 is a partially cutaway perspective view showing an example of a louver screen according to the present invention.

FIG. 2 is a longitudinal sectional view showing an example of a louver screen according to the present invention.

FIG. 3 is a longitudinal sectional view of another embodiment of the louver screen according to the present invention.

FIG. 4 is a longitudinal sectional view of another embodiment of the louver screen according to the present invention.

FIG. 5 is a perspective view of an example of the control means according to the present invention.

FIG. 6 is a perspective view of another embodiment of the control means according to the invention.

FIG. 7 is a perspective view of one end of an example of a louver screen according to the present invention.

FIG. 8 is a sectional view of the specific example of FIG. 7.

FIG. 9 is a perspective view of an example of a clip according to the present invention.

10 and 11 are cross-sectional views showing different embodiments of the clip shown in FIG. 9.

FIG. 12 is a perspective view of yet another embodiment of the clip.

13 and 14 are perspective views of different embodiments of the cross wire according to the present invention.

FIG. 15 is a side view of yet another embodiment of the clip according to the present invention.

FIG. 16 is a perspective view of still another embodiment in which the louvers are attached by tension in the louver screen of the present invention.

4... Upper frame material, 8... Lower frame material, 15.16a,
16b, 16c...Blade, 2G, 20a,
20b - control rod, 24.24a, 24b - cross wire, 32a, 32b... support wire.

that's all

Claims (1)

Claims: 1. A louver screen having a plurality of substantially parallel spaced blades interconnected by at least one interconnection means for coordinated control of its operation. one end of each of the plurality of blades is attached to the first frame member by a fixing device;
and the other end is attached to the second frame member by means of adjustable or resiliently mounted fasteners, and the blade is placed between the respective fasteners, the blade is connected to the corresponding one of the connecting means. the blades are free to rotate about their longitudinal axes in response to movement of the blades, such that each of said blades resists undesirable deflection from its parallel position in a rotatable condition; A louvered screen maintained under a predetermined tension in its longitudinal direction by tension supported by said adjustable or resiliently mounted fixtures. 2. When a plurality of blades are in a parallel relationship, the edges of adjacent blades are spaced apart from each other in a fully open position and the edges of adjacent blades partially overlap;
2. The louvered screen of claim 1, wherein the louvered screen is movable between a fully closed position and a fully closed position. 3. Louvered screen according to any of the preceding claims, wherein the blades are made of metal, preferably stainless steel, plastic material, aluminum, rubber or a combination of these materials. 4. The louver screen of claim 3, wherein the blades are of sandwich construction with a metal outer layer on either side of a rubber intermediate layer, said outer metal layer adhesively bonded to said rubber layer. 5. Is each blade rotatable around its axis?
or a louvered screen according to any of the preceding claims, which is rotated off-axis to one side of the blade. 6. There is at least one, preferably two or more, interconnecting means, each interconnecting means being a crossed wire or thin strip of metal, each wire or strip being regularly spaced over its entire length. A louvered screen according to any of the preceding claims, wherein a plurality of apertures are arranged in the louvered screen. 7. The louver screen according to claim 6, wherein the cross wire is formed by twisting or braiding at least two wires that are spirally wound around each other. 8. A louvered screen according to any of the preceding claims, wherein the first frame member and the second frame member are each arranged substantially transversely to the longitudinal direction of the blade. 9. A louver according to any of the preceding claims, having control means in the form of a control rod rotatable about its longitudinal axis and a side frame extending transversely between the upper and lower frames. screen. 10. A fixing device is constituted by a collar formed by combining with one end of the blade and a support wire extending from the collar, and the frame member has an opening for holding one end of the support wire, The support wire, after passing through the opening, is held in place by a ferrule that is frictionally tightened around the support wire, thereby keeping the end of the blade fixed in place. A louvered screen according to any of the claims. 11. Louvered screen according to any of the preceding claims, wherein the adjustable or resiliently mounted fastening device consists at least in part of spring means, preferably compression spring means or wave spring means. 12. at least one end of the blade is bent over itself to define a substantially circular opening;
A louvered screen according to any of the preceding claims, wherein a collar is placed in the opening to receive a support wire, the support wire being tightened to secure the ends of the blades. 13. A flange is provided at one end of the blade, and a keyhole slot is provided at or near the flange, the keyhole slot being a support wire having a retaining means for fixing the end of the blade. A louvered screen according to any of the preceding claims, wherein the louvered screen retains a through the keyhole slot. 14. A retaining clip is provided on each blade for connecting the blade to the connecting means in order to coordinate the movement of the blade in response to movement of the connecting means, said retaining clip being provided in the connecting means. a hook-like protrusion at its distal end for engagement with one of the apertures in the blade; and a fixed mounting means.
Louvered screen according to any of the preceding claims. 15. The attachment means is a helical or spiral spring means, the first portion of the spring means being mounted on one side of the blade such that the spring means straddles and frictionally engages the blade; and a second portion of the spring means is located on the other side of the blade.
The louver screen described in 4. 16. Any of the preceding claims, wherein means for additionally cooperating with the spring means of the retaining clip are provided on each of the plurality of blades to securely position and retain the clip on the blade. Louver screen as described in. 17. Louvered screen according to any of the preceding claims, wherein each of the blades is provided with one or more clippable tab-shaped cooperating means for firmly fixing the retaining clip to the blade. 18. According to any of the preceding claims, wherein the spacing of the apertures of the coupling means is such that the hook portion of the retaining clip is retained in the aperture to coordinate the movement of each blade in response to movement of the coupling means. Louvered screen as described. 19. The adjustable or resiliently mounted fastening means is a wave spring means extending substantially across the blade, the spring means being provided with means for supporting one end of the blade; Louvered screen according to any of the preceding claims. 20, comprising a first frame member, a second frame member, and a plurality of elongate blades extending between the first frame member and the second frame member in substantially side-by-side parallel relationship with each other; a louvered screen, the first frame member and the second frame member each substantially transverse the longitudinal axis of the blades, and the first frame member and the second frame member each extend substantially transversely to a longitudinal axis of the blades, and each of the plurality of blades mutually coupling means for coupling to and for causing the blades to rotate in unison about their respective longitudinal axes;
control means for controlling movement of the coupling means, each of the plurality of blades having a predetermined length in the longitudinal direction of the blade to maintain the blades in a substantially parallel position during use. A louvered screen that is attached to one of the first frame member or the second frame member by a fixture that applies a defined tension to the plate.