JPH048239Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to slats used in blind curtains installed at windows, entrances, etc. of buildings.

[Prior Art] Conventionally, slats used in blind curtains are known, for example, as shown in FIGS. 8 and 9.

In the above structure, a plurality of strip-shaped slats 1 are connected in the vertical direction with their outer surfaces 1a in a horizontally open state or vertically closed state.

Each slat 1 has U-shaped slat pieces 2 attached to both ends thereof, for example, by rivets.

One end portion 3a of a crank pin 3 is provided on this slot piece 2 in a protruding manner.

The other end 3b of the crank pin 3 is connected to a link mechanism 4.
It is pivoted to the link plate 5 and its tip protrudes from the link plate 5. This link mechanism 4 has upper and lower link plates 5 and 6 rotatably connected to form one link unit 7, and a plurality of link units 7 are connected vertically to the crank pin 3 to form a plurality of link units 7. The slats 1 are connected to each other.

Further, a base 8a of a crank arm 8 is fixed to the tip of the other end 3b of the crank pin 3, and this crank arm 8 is attached to the outer surface of the slat 1.
It is arranged so as to be inclined at a predetermined angle with respect to a.

An engagement protrusion 9 is provided at the tip 8b of the crank arm 8, and this engagement protrusion 9 is connected to the opening/closing guide 1.
It is slidably engaged with the guide groove 11 of 0.

Further, an elevating plate 12 is attached to the crank pin 3 attached to the lowest slat 1, and an elevating mechanism such as a chain (not shown) is attached to this elevating plate 12.

Then, by the operation of the elevating mechanism, the elevating plate 12,
The link mechanism 4 and the crank arm 8 are raised and lowered, and each crank pin 3 is raised and lowered through the raising and lowering of the link mechanism 4 and the crank arm 8, and each slat 1 is raised and lowered.

Furthermore, each crank pin 3 is rotated by the lateral movement of the opening/closing guide 10, and each slat 1 is rotated from a horizontal state to a vertical state.

[Problems to be Solved by the Invention] However, in the slat for a blind curtain having the above structure, since one end 3a of the crank pin 3 is fixed to the slat piece 2, the length cannot be adjusted.

On the other hand, some dimensional tolerances are allowed for windows, doorways, etc., and these tolerances are usually absorbed and adjusted during installation work.

However, in the above case, since the length of the crank pin 3 cannot be adjusted, work is required to absorb and adjust the allowable tolerance.

For this reason, there was a problem that the installation work was not only complicated but also time-consuming.

[Purpose of the invention] The invention was made in order to solve the above problems, and its purpose is to make it possible to adjust the length by slidably attaching the crank pin to the slat piece. To provide a slat for a blind curtain that can easily and reliably be installed by absorbing tolerances.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a slat for a blind curtain having crank pins protruding from both ends of the slat, in which the crank pins are integrally attached to both ends of the slat. It is characterized by being attached so that it can rotate and be slidable in the lateral direction.

[Operation] Therefore, even if there is a slight dimensional tolerance in the installation location, this tolerance can be easily absorbed by sliding the crank pin.

[Example] Hereinafter, the present invention will be explained with reference to the drawings.

An embodiment of the present invention is shown in FIGS. 1 to 8.

In this embodiment, the same or equivalent members and parts as in the above conventional example are given the same reference numerals, and the explanation thereof will be omitted.

In the slat for a blind curtain according to the present invention, as shown in FIGS. 1, 2, and 3, a plurality of strip-shaped slats 20 are arranged with their outer surfaces 21 parallel to each other and in a horizontal or vertical state. arranged vertically.

At the upper and lower sides of the inner surface 22 of each slat 20, there are a pair of projecting edges 23a that extend completely along the longitudinal direction of the slats 20.
23a is provided, and each projecting edge 23a is L-shaped to form a space 24 between it and the inner surface 22 to form a protrusion 23. Engaging portions 31 along the upper and lower edges of the slat piece 30 are inserted into the space 24 of the guide portion 23 .

The slat piece 30 includes a rectangular plate-shaped substrate and edge plates 32b, 3 which are L-shaped plates integrally protruding along the upper and lower edges 32a, 32a of the substrate.
2b, and side edges 32a, 32a are formed as rectangular plates having a width and thickness that can be freely inserted into the spaces 24, 24.

This slot piece 30 is provided with grooves 33, 33 formed by side edges 32a and L-shaped edge plates 32b in the engaging portions 31 on both sides thereof.

A U-shaped notch 34 is provided at approximately the middle of the engaging portion 31, and the slat piece 30 is fixed to the slat 20 by caulking the protruding edge 23a located at the notch 34. It is set as follows. Due to this fixation, an insertion space for the cap 50 is formed in the groove 33 between the inner surface of the L-shaped edge plate 32b and the outer surface of the protruding edge 23a, as shown in FIG. 2A.

In addition, the L-shaped edge plate 32 near the inner end of each groove 33
A substantially semicircular notch locking portion 35 is provided at the outer edge of b.

A recess 36 is formed between the L-shaped edge plates 32b, 32b on the inner surface of the slat piece 30, and a rectangular cylindrical projection 37 is integrally protruded from the center of the recess 36.

A mounting plate 41 provided at one end 40a of the crank pin 40 is slidably mounted in the recess 36, as shown in FIG.

The mounting plate 41 is formed as a rectangular plate, as shown in FIG. 5, and has a square hole 42 bored inside thereof.

When the mounting plate 41 slides, the square holes 42 come into contact with the left and right sides 37a and 37b of the protrusion 37, as shown by the solid line or the two-dot chain line in FIG. 4, and stop the mounting plate 41 from sliding. is formed. At this time,
Tolerances existing in the window, doorway, etc. are absorbed by the mounting plate 41, so that the length of the crank pin 40 is adjusted to a size that accommodates the window, doorway, etc.

The other end 40b of the crank pin 40 passes through the link plates 5 and 6 and is fixed to the base 8a of the crank arm 8, as shown in FIG.

As shown in FIG.
A cap 50 made of, for example, synthetic resin is engaged with the groove 33.

As shown in FIGS. 6A, B, and C, this cap 50 is generally constructed of a rectangular top plate 51 and a pair of L-shaped side plates 52 provided on both sides of the top plate 51.

The upper plate 51 has a slat piece 3 at one end thereof.
An abutting portion 53 is provided upright to abut the end portion of the semicircular notch 35 side.

The projecting edge portion 52 is formed in an L shape that forms a space 54 between it and the upper plate 51.
The L-shaped plate 32 of the groove portion 33 of the slat piece 30 is set to be engaged with the groove portion 33 of the slot piece 30.

A small gap 55 is provided between the tip of the projecting edge 52 and the contact portion 53, and this gap 55
The cap 50 is fixed to the L-shaped plate 32 with its tip facing the semicircular notch 35.

An inclined guide portion 56 is provided on the tip side of the projecting edge portion 52 to make it easier for the tip portion of the semicircular notch portion 35 to face the gap portion 55.

Next, the operation of the configuration described above will be explained.

With the above configuration, the mounting plate 41 of the crank pin 40 can slide in the left-right direction within the recess 36 of the slot piece 30.

Therefore, the length of the crank pin 40 can be adjusted in accordance with the dimensional tolerances present in windows, doorways, etc.

Moreover, since the mounting plate 41 of the crank pin 40 is integrated with the slot piece 30 by the cap 50, the mounting plate 41 will not come off from the slot piece 30.

FIG. 7 shows another embodiment, in which a flat rectangular cylindrical slat piece 13 is attached to the inner surface of the slat 20.
0 is fixed by adhesive or welding, etc., and a mounting plate 141 made of a square plate at the base end of the crank pin 40 is inserted into this slot piece 130.
It has a shape in which stoppers 141a protrude from the left and right outer peripheries that protrude from the slat piece 130 by a predetermined length.

In this embodiment as well, the mounting plate 141 can slide within the slat piece 130 by a predetermined width in the lateral direction to accommodate the above-mentioned dimensional tolerance.

Further, the spline shaft of the crank pin base may be inserted into a spline cylinder fixed to the slat 20 side, and the stopper may be provided only at the inner end of the crank pin base.

Note that FIG. 8 shows a blind curtain 18 constructed using slats with the above-mentioned mounting structure, and this blind curtain 18 is constructed using a pair of box-shaped side frames 13 attached to the side edges of a window entrance, etc. (not shown). , 13.

In other words, the opening/closing guide 10 shown in FIG. 1 is installed in each side frame 13, and the crank arm 8 is slidably engaged in the guide groove 11, and the crank pin is integrated with the crank arm 8. Each slat 20 is guided and held in the side frames 13, 13 via 40.

The upper parts of the side frames 13, 13 are bridged by a case 14 that houses a motor M as a drive source, and the motor M is interlocked and connected to a drive shaft 15, and sprockets 16, 16 are provided at both ends of the drive shaft 15. It is being The upper end of a chain 17 is hung on each sprocket 16, and the lower end thereof is connected to the lifting plate 12.

When the chain 17 is moved up and down via the drive shaft 15 and sprocket 14 by driving the motor M, each slat 20 moves up and down while extending and contracting the link mechanism 17 via the elevating plate 12, and also moves the opening/closing guide 10 laterally. , the crank arm 8 rotates and the slat 20 rotates,
The space between the upper and lower slats is opened and closed.

[Effects of the invention] As explained above, according to the invention, the crank pin is attached to the slat so that it can slide in the left and right directions, so even if there are dimensional tolerances for windows, doorways, etc. Tolerances are taken up by the sliding movement of the mounting plate.

Therefore, the length of the crank pin can be easily and automatically adjusted to a length that corresponds to the allowable tolerance, and adjustment work can be performed easily and reliably on site. Therefore, the installation work of the blind curtain is simplified and the time required is significantly shortened.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of a slat for a blind curtain according to the present invention, and FIGS. 2A and B
1 is a cross-sectional view taken along the - arrow in FIG. 1, and an exploded view, FIG. 3 is an inner view of the slat, FIG.
The figures are a perspective view of the crank pin mounting plate, Fig. 6A is a front view of the cap, Fig. 6B is a side view of Fig. 6A, Fig. 6C is a back view of Fig. 6A, and Fig. 7 is an inner view of a slat showing another embodiment, FIG. 8 is a perspective view of a blind curtain using the slat according to the present invention, FIG. 9 is a perspective view of a conventional example, and FIG.
It is an enlarged view of the main part of the figure. 20...Slat, 30,130...Slat piece, 40...Crank pin, 41,141...
...Mounting plate.

Claims (1)

[Claims for Utility Model Registration] A slat for a blind curtain having crank pins protruding from both ends of the slat, wherein the crank pins are attached so as to rotate integrally with both ends of the slat and to be slidable in the lateral direction. A slat for blind curtains characterized by: