JP3102791U - Venetian blind slats - Google Patents

Abstract

An object of the present invention is to provide a blind which is resistant to bending impact and does not generate a gap when light is shielded.
A slat (1), which is curved in the width direction and formed in a strip shape, has an insertion hole (3) through which an elevating cord (2) is inserted, and ladder codes for inclining the slat are arranged on both side edges of the insertion hole in the width direction. In a venetian blind in which several other slats are stacked and the slats can be raised and lowered and the inclination angle in the width direction can be changed by operating the lifting and lowering cord, the insertion hole 3 of the lifting and lowering cord 2 is located at the center position in the width direction of the slat. From the rear end of the insertion hole 3 to the rear end edge of the slat, and a recess 4 having a predetermined size is formed from the vicinity of the rear end of the insertion hole 3 to the front end of the insertion hole 3. In this configuration, a reinforcing rib 5 having a predetermined length is formed between the front end of the slat and the longitudinal direction of the slat.
[Selection diagram] Fig. 1

Description

  This invention relates to a slat of a venetian blind characterized by the shape of the slat constituting the venetian blind used for awning in a window or the like.

In general venetian blinds, insertion holes for lifting cords are drilled near the left and right ends of slats made of arc-shaped thin plates stacked in parallel in multiple stages, many slats are stacked, and the bottom plate is arranged at the bottom end, Ladder cords are arranged at the front and rear edges in the width direction of the slat insertion holes. The ladder cord is operated with the bottom plate and slat lowered by its own weight to adjust the tilt angle before and after the slat.
A thin plate slat having such an insertion hole is often bent or broken at the time of assembling the blind or other handling. Therefore, it is known to form a reinforcing rib near the insertion hole along the longitudinal direction for reinforcement (see Patent Document 1).
Since this slat was formed thinly, it was easily bent, and especially near the insertion hole was easily broken. For this purpose, there has been known a rib provided with a large number of protrusions over the entire length of the slat as reinforcement (Patent Document 2).

FIG. 1 of Japanese Utility Model Laid-Open No. 57-129899 Japanese Unexamined Utility Model Publication No. Sho 62-131096. FIG. 2 discloses a tape insertion hole 2 for inserting a lifting cord for operating a slat up and down in a rectangular shape at the center in the width direction, and the tape insertion hole 2 and the slat. A reinforcing rib is arranged between the edge and the edge. In such a slat, there is a gap between the slats when the slat is tilted due to the insertion hole 2 in the center, and light leaks. Further, in Patent Document 2, several ribs having the same length as the slat are formed in parallel with the longitudinal direction of the slat, and the insertion hole of the elevating cord is formed to be elongated, but the position of the insertion hole is the center position of the slat. In addition to this, not only a sufficient effect cannot be obtained, but also the formation of such a long rib has a problem in light-shielding properties, and affects light reflection.

As described above, it is an object of the present invention to solve many problems of the blind slats. In the conventional blind, a gap is formed between the slats, so that it is impossible to completely shield the slats. Therefore, there has been a demand for a slat that is inclined when the blind is in a light-shielded state and does not have a gap in the overlapping portion of the front and rear ends.
It is an object of the present invention to provide a venetian blind slat which has a simple structure, is durable against bending impact, and has improved light blocking properties of the blind.
Another object of the present invention is to provide a venetian blind in which a gap does not occur in an overlapping portion of an adjacent slat when the slat is vertically inclined in a light-shielded state.

The present invention has the following configuration to achieve the above object.
Curved in the width direction, in the slats of venetian blinds having insertion holes near the left and right ends near the left and right ends for inserting a lifting cord into a thin plate formed in a strip shape,
An insertion hole for inserting the lifting cord is formed in a narrow width direction at a position deviated to one side from the center position in the width direction of the thin plate, and has a predetermined size from near a rear end of the thin insertion hole to a rear end edge of the thin plate. And a slat of a venetian blind formed by forming a reinforcing rib having a predetermined length along a longitudinal direction between a front end of the insertion hole and a front end edge of the thin plate.

  The problem of the present invention is that an insertion hole through which the lifting cord is inserted is elongated from the position of 2/5 to 5/10 of the width of the thin plate toward the rear edge of the thin plate. A recess of a predetermined size is formed from the vicinity of the end to the rear edge of the thin plate, and a line-shaped reinforcement of about 5 mm along the longitudinal direction near the midpoint of the distance between the front end of the insertion hole and the front edge of the thin plate. This can be achieved by a slat of a venetian blind having a configuration in which a rib is formed and a configuration in which the insertion hole is formed to have a length of 10 to 12 mm and a width of 2 to 3 mm.

  The problem of the present invention is that the insertion hole, which is bent in the width direction and passes through the elevating cords formed near the left and right ends of the thin plate formed in the shape of a strip, is biased to one side from near the center in the width direction of the thin plate. It is perforated to be narrow in the width direction, and a recess of a predetermined size is formed from near the rear end of the elongated insertion hole to the rear end edge of the thin plate, and at the middle of the distance between the front end of the insertion hole and the front edge of the thin plate. A slat having a reinforcing rib of a predetermined length is formed in the vicinity along the longitudinal direction, a number of these slats are stacked, a top plate is arranged at the top and a bottom plate is arranged at the bottom, and a bottom plate is arranged on the bottom plate. The lifting cord with the fixed end is connected to the operating rod via the fixed frame through the insertion hole of each slat and the insertion hole of the top plate, and this operating rod is operated to descend to the bottom due to the weight of the bottom plate and slat group The back end of each slat upward. Overlap the front and rear ends of each slat when shading is inclined slats by location can be achieved by venetian blinds according to the configuration so as not to cause a gap between adjacent slats.

    In the slat of the venetian blind of the present invention, the hole through which the lifting cord penetrates is formed to be elongated to one side from the center position in the width direction of the slat, so the front edge of the slat is on the lower side and the rear edge is on the upper side. When sloping, the slats overlap at the ends, creating no gap. It is almost straight vertically. In particular, since the concave portion is formed at the rear end edge, the thickness of the lifting cord is absorbed, and no bulging occurs.

Further, since a concave portion is formed at the rear end edge of the slat, the slat is not easily broken even when a bending force is applied thereto. In addition, the reinforcing rib having a predetermined length provided in the vicinity of the front end edge of the slat can prevent breakage against bending impact. Even if the area of the insertion hole of the lifting cord is larger than before, there is no fear of bending.
As described above, the slat of the present invention is provided with a reinforcing rib near the insertion hole, and has an elongated insertion hole and a concave portion formed at the rear end edge. In addition, when the stacked slats are inclined, there is no gap in the overlap of the front and rear ends of the slats.

  The slat of the present invention can be manufactured at a low cost because the recess, the insertion hole and the rib can be simultaneously formed in the manufacturing process when the slat is formed.

Hereinafter, an embodiment of a slat of a venetian blind according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a partially cutaway plan view of a slat according to the present invention. FIG. 2 is an enlarged explanatory view of a main part of FIG. FIG. 3 is a sectional view taken along line AA and line BB in FIG. FIG. 4 is a view showing the use state of the blind using the slat of the present invention. FIG. 5 is a side view of the venetian blind of the present invention in a light-shielded state.

  As shown in FIG. 1, the slat 1 of the present invention has a thin plate shape formed of a metal such as an aluminum alloy. In the vicinity of the left and right ends of the slat 1, insertion holes 3, 3 for inserting a blind lifting cord 2 are formed. The insertion hole 3 is formed to be elongated in the width direction of the slat 1 from the central portion of the length to the rear edge 1b. In the embodiment shown in the drawings, the position of the insertion hole 3 is 2/5 to 5/10 of the width of the slat 1, and when the slat width is 25 mm, the length is about 11 mm from the position of 11 mm from the front edge 1a. Perforated to 3 mm.

A recess 4 is formed in the rear end 1b of the slat 1 from near the rear end of the insertion hole 3 of the slat 1. The size of the recess 4 is not particularly limited, but may be any depth as long as the thickness of the lifting cord 2 can be absorbed. It is formed to reinforce the slat 1. In the embodiment shown in the figures, this recess 4 is approximately 3 mm × 17 mm.
A strip-shaped rib 5 having a predetermined length is formed along the longitudinal direction between the front end of the insertion hole 3 of the slat 1 and the front end 1a of the slat 1 formed as described above. In the embodiment shown in the drawings, the slat is formed so as to protrude upward, but may be formed so as to protrude from the back side. The shape is not specified, and may be a triangle or an arc.

As shown in FIG. 4, the slats 1 of the present invention are stacked to form a venetian blind.
The top plate 7 penetrating the lifting cords 2 is arranged on the bracket 10 of the fixed frame attached to the upper end of the window frame. The lifting cord 2 is inserted into the insertion hole 3 of each slat 1, 1,. Ladder cords 6 are arranged on the front and rear edges of the slats 1 so that the inclination angle of each slat 1 can be adjusted. An operating rod 9 for operating the ladder code 6 and the elevating cord 2 is provided at one end of the bracket 10.

When the end of the lifting cord 2 penetrating through the operating rod 9 is pulled out and the bottom plate 8 is pulled up, the slats 1 are collected close to the bracket 10. When the stopper (not shown) of the lifting cord 2 is opened by operating the operating rod 9, the slat 1 and the bottom plate 8 are lowered. When the operating rod 9 is rotated, the ladder cords 6 arranged on the front and rear edges of the slat 1 act to tilt the slat 1. At this time, the lifting cord 2 slides in the elongated insertion hole 3 of the slat 1, and the slat 1 becomes substantially parallel to the lifting cord 2. At this time, the thickness of the lifting cord 2 enters the recess 4 of the slat 1.
Therefore, the front and rear ends of the slat 1 overlap the front and rear ends of the adjacent slats 1 and are formed substantially linearly.

FIG. 3 is a plan view of the slat according to the present invention, partially cut away. FIG. 2 is an enlarged explanatory view of a main part of FIG. 1. FIG. 3 shows a sectional view of the slat of FIG. 2. (A) is a sectional view taken along line AA, (b) is a sectional view taken along line BB. FIG. 3 is a view showing a use state of the embodiment of the blind using the slat of the present invention. FIG. 5 is a side view of the blind in FIG. 4 in a light-shielded state.

Explanation of reference numerals

Reference Signs List 1 slat 1a front edge 1b rear edge 2 lifting cord 3 insertion hole 4 recess 5 rib 6 ladder cord 7 top plate 8 bottom plate
9 Operating rod 10 Bracket

Claims (4)

Curved in the width direction, in the slats of venetian blinds having insertion holes near the left and right ends near the left and right ends for inserting a lifting cord into a thin plate formed in a strip shape,
An insertion hole for inserting the lifting cord is formed in a narrow width direction at a position deviated to one side from the center position in the width direction of the thin plate, and has a predetermined size from near a rear end of the thin insertion hole to a rear end edge of the thin plate. A slat of a venetian blind, wherein a reinforcing rib having a predetermined length is formed along a longitudinal direction between a front end of the insertion hole and a front end edge of the thin plate. Curved in the width direction, in the slats of venetian blinds having insertion holes near the left and right ends near the left and right ends for inserting a lifting cord into a thin plate formed in a strip shape,
An insertion hole through which the lifting cord is inserted is elongated from the position of 2/5 to 5/10 of the width of the thin plate toward the rear edge of the thin plate, and the rear end of the thin plate is inserted from near the rear end of the elongated insertion hole. A recess having a predetermined size is formed over the edge, and a reinforcement rib having a length of about 5 mm is formed along the longitudinal direction near a middle point of a distance between the front end of the insertion hole and the front edge of the thin plate. Venetian blind slats characterized by: The slat of a venetian blind according to claim 1 or 2, wherein the insertion hole is formed to have a length of 10 to 12 mm and a width of 2 to 3 mm. Curved in the width direction, the insertion holes for inserting the lifting cords drilled near the left and right ends of the thin plate formed in the shape of a strip are perforated in a narrow width direction at a position deviated to one side from near the center in the width direction of this thin plate. A recess of a predetermined size is formed from near the rear end of the elongated insertion hole to the rear edge of the thin plate, and along the longitudinal direction near the middle of the distance between the front end of the insertion hole and the front edge of the thin plate. A slat having a reinforcing rib of a predetermined length is formed, a large number of the slats are stacked, a top plate is arranged at the top and a bottom plate is arranged at the bottom, and a lifting cord with an end fixed to this bottom plate is provided. It is connected to the operating rod via a fixed frame through the insertion hole of each slat and the insertion hole of the top plate, and this operating rod is operated to lower the bottom plate and the slat group to the lowest position by their own weight, and the rear end of each slat With the slats on top Overlap the front and rear ends of each slat when shading by obliquely, venetian blinds, characterized in that so as not to cause a gap between adjacent slats.

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