JP2002061473A - Blind - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blind which can more minutely adjust its height dimension than a conventional blind through simple operation. SOLUTION: According to the blind, a holder 30 is attached to a bottom rail, and an adjusting drum 32 is axially supported by the holder 30 in a manner being rotatable in the same. The adjusting drum 32 has a gear portion 32c formed on the periphery thereof, and the holder 30 has a receiving portion 30b1 formed therein for pinching the ladder cord 14 between the gear portion 32c and the receiving portion 30b1 per se. Then, by virtue of the pinching of the ladder cord 14 by the gear portion 32c and the receiving portion 30b1, the ladder cord 14 is connected to the bottom rail 24, and further rotation of the adjusting drum 32 leads to movement of a location at which the ladder cord 14 is pinched.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blind, and more particularly, to a blind having improved connection of a ladder cord to a bottom rail.

[0002]

2. Description of the Related Art In a conventional horizontal blind, FIG.
As shown in the figure, at the lower end of the ladder cord 14 that supports the slats 16 in the aligned state, the bottom rail 24 is attached to the middle cord 14a of the ladder cord 14 at the lowest stage.
Is supported. Then, the lower middle cord 14a
The front and rear vertical cords 14b, 14b below the
A tape holder 100 that is housed in a through hole 24a formed at the bottom of the bottom rail 24 and covers the through hole 24a
Is locked to the bottom rail 24 (FIG. 6B), and the ladder code 1 is fixed between the tape holder 100 and the bottom rail 24.
The ladder cord 14 and the bottom rail 24 are connected to each other by sandwiching 4.

[0003]

Normally, the height of the blind is manufactured in units of about 1 cm. However, depending on the mounting place, when the blind is completely lowered, the lower surface of the bottom rail 24 is positioned below the window frame. Or contact the floor surface, use it without worrying about contact, or operate the stopper at the bottom of the window frame or just before touching the floor surface,
It must be operated so that the blinds do not descend further. However, unless careful attention is paid to lowering the blinds, it is not preferable because the bottom rail 24 generates a collision sound when it comes into contact with the lower part of the window frame or the floor surface.

It is conceivable to remove the tape holder 100 from the bottom rail 24 and adjust the position where the ladder cord 14 is clamped. However, the tape holder 100 securely clamps the ladder cord 14 with the bottom rail 24. Therefore, since it is firmly locked to the bottom rail 24,
Once the tape holder 100 is attached, the bottom rail 24
It takes time and effort to remove the ladder cord 14, and it is difficult to finely adjust the position where the ladder cord 14 is clamped.

Alternatively, one of the lowermost slats 16 is pulled out and the bottom rail 24 is placed thereon, and the bottom rail 2
The middle code 14a of the ladder code 14 holding
By moving up the pitch, the height of the blind can be reduced, but even in this case, there is a problem that fine adjustment of one pitch (normally, 20 mm per pitch) or less cannot be performed. If the blinds become too short due to over-adjustment, light leakage may occur from the lower part of the window.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a blind capable of finely adjusting the height of a blind more finely than a conventional example with a simple operation.

[0007]

In order to achieve the above-mentioned object, a blind according to the first aspect of the present invention supports a large number of slats in an aligned state by a ladder cord suspended from a head box. The upper end of the ladder cord is connected to the ladder cord support device provided in the head box, and the lower end of the ladder cord is connected to the bottom rail arranged below the slat row, a holder is attached to the bottom rail, and the holder is attached to the holder. The adjusting drum is rotatably supported with respect to the adjusting drum, and a gear portion is formed on the peripheral surface of the adjusting drum, and a receiving portion for holding a ladder cord between the adjusting drum and the gear portion is formed on the holder, The ladder cord is connected to the bottom rail by clamping the gear portion and the receiving portion, and the ladder cord is clamped by the rotation of the adjustment drum. Characterized by a movable position.

[0008] By rotating the adjusting drum, a portion where the ladder code is sandwiched between the holder and the holder is moved, and the ladder code exposed to the outside is pulled into the holder.
Or conversely, by sending the ladder code to the outside, the exposed length of the ladder code, that is, the height from the bottom rail to the head box can be changed, and the height of the blind can be adjusted. it can. Since the portion to be clamped can be finely changed by turning the adjustment drum, fine adjustment of the height of the blind can be performed.

According to a second aspect of the present invention, the ladder cord is wound around the adjustment drum in the vicinity of the holder of the first aspect and in the vicinity of a portion sandwiched between the gear portion and the receiving portion. A guide portion for guiding the ladder cord away from the adjustment drum to prevent the occurrence of the ladder cord is formed. As a result, the ladder cord is securely pinched between the receiving portion of the holder and the gear portion of the adjustment drum without the ladder cord being wound around the adjustment drum and hindering the pinching with the rotation of the adjustment drum. Can be.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 are views showing an embodiment of a blind according to the present invention.

The horizontal blind 10 has a head box 12 attached to a wall or a ceiling via a bracket 11, and a ladder cord 14 suspended from a ladder cord support device 17 in the head box 12.
Thus, the multi-stage slats 16 are tiltably supported. The ladder cord supporting device 17 includes, for example, a shaft 18 that extends in the longitudinal direction and is rotatably supported in the head box 12, and a drum 20 to which the upper end of the ladder cord 14 is connected so as to be wound and unwound. Consists of The shaft 18 is connected via a rotation transmission mechanism (not shown)
It is connected to an operation rod 22 extending downward from the head box 12.

Below the slats 16, the bottom rail 2
4 are arranged. One end of an elevating cord 26 is connected to the bottom rail 24, and the other end of the elevating cord 26 is inserted into each slat 16, introduced into the head box 12, and guided to one end side in the width direction of the head box 12. It is derived from the headbox 12 and connected to the operation knob 27.

As shown in an enlarged manner in FIG. 2, the ladder code 14 includes front and rear vertical codes 14b and the vertical code 1b.
4b. In the bottom rail 24, through holes 24a and 24b are formed in the lower surface and the upper surface, respectively, corresponding to the width direction position of the blind in which the ladder cord 14 and the lifting cord 26 are arranged. One end 26a of the lifting cord 26 passes through the through hole 24b, and the knot 26 formed on the one end 26a is formed.
b is locked in the through hole 24 b in the bottom rail 24. In addition, the lower middle code 14 of the ladder code 14
The front and rear vertical cords 14b extending further below a
Are introduced into the bottom rail 24 by a tape holder 30 attached to a lower portion of the bottom rail 24.

More specifically, as shown in FIG. 3, an opening 30a is formed in the center of the tape holder 30, and four upwardly projecting wall portions 30b are formed around the opening 30a. Are formed apart from each other in the circumferential direction. A recess 30c is formed around the opening 30a except for the projection wall 30b. At the front and rear ends of the tape holder 30, a locking portion 30d bent slightly inward is formed, and the locking portion 30d is formed to protrude forward and backward at the lower end of the bottom rail 24. Locked part 24c
, The tape holder 30 is fixed to the lower portion of the bottom rail 24, and at the same time, the opening 30a is aligned with the through hole 24a of the bottom rail 24, and the protrusion wall portion 30b
Project into the through hole 24a. The notch 30e for inserting the vertical cords 14b, 14b before and after the ladder cord 14 is formed in the locking part 30d.

The opening 30a of the tape holder 30
, The adjustment drum 32 is fitted. Adjustment drum 32
The annular projection 32a is fitted into an annular groove 30f provided at the inner edge of the opening 30a, and a flange 32b provided at the tip is locked to the tip of the projection wall 30b. It is pivotally supported. A gear portion 32c is formed on the peripheral surface of the adjustment drum 32. Further, an adjustment groove 32d is formed on the lower surface of the adjustment drum 32 (FIG. 4), and an end of a driver or a coin can be inserted into the adjustment groove 32d.

The lower ends of the two vertical cords 14b, 14b, through which the cutouts 30e of the tape holder 30 are inserted, pass through the gap between the concave portion 30c of the tape holder 30 and the lower surface of the bottom rail 24, and further have a plurality of vertical cords. The gear portion 32c of the adjustment drum 32 and the projection wall portion 30 are located between the projection wall portions 30b.
b, and is introduced into the bottom rail 24. The ladder cord 14 is coupled to the bottom rail 24 by sandwiching the two vertical cords 14b, 14b between the gear portion 32c and the projection wall portion 30b. Two protruding wall portions 30b1 facing each other among the four protruding wall portions 30b
Function as receiving portions for holding the vertical cords 14b between the adjusting drum 32 and the remaining two projecting wall portions 30b2. It functions as a guiding unit for guiding the user to move away from the vehicle. The two vertical cords 1 are formed by the projection wall portion 30b2 functioning as the guiding portion.
The lower ends of the bottom rails 24 b and 14 b are separated from the adjustment drum 32 and separated from each other.
Has been introduced within. The two vertical cords 14b, 1
4b, the lower end is formed with a gear portion 32c and a projecting wall portion 3.
0b to prevent the clip 34 from coming off.
Are attached.

When the height of the bottom rail 24, that is, the height of the blind is to be adjusted by finely adjusting the exposed length of the ladder cord 14, the bottom rail 2 shown in FIG.
When the end of the screwdriver or the coin is inserted into the adjustment groove 32d of the adjustment drum 32 on the lower surface side of the adjustment drum 4 and the adjustment drum 32 is rotated in an appropriate direction, the gear portion 3 of the adjustment drum 32 is rotated.
The gear portion 32c moves each vertical code 14b of the ladder code 14 while the 2c maintains the vertical cords 14b of the ladder code 14 sandwiched between the projection wall portion 30b. For example, as shown in FIG.
When the adjustment drum 32 is rotated in a direction in which the b and 14b are fed into the bottom rail 24, the height of the bottom rail 24 is high, in other words, the length of the blind is short. Conversely, as shown in FIG. 5B, when the adjustment drum 32 is rotated in a direction in which the two vertical cords 14b, 14b are sent out of the bottom rail 24,
The height of the bottom rail 24 is low, in other words, the length of the blind is long. Thus, the height of the blind can be adjusted. Thus, as appropriate
Fine adjustment can be performed by rotating the adjustment drum 32 and adjusting the amount of rotation.

In this embodiment, in order to adjust the height of the blind, the tape holder 30 is attached to the bottom rail 2.
Since the adjustment drum 32 need not be removed from the device 4 but only needs to be rotated, the adjustment can be easily performed.

[0019]

As described above, according to the present invention, the adjustment drum is rotated to pull the ladder cord exposed to the outside into the holder, or the adjustment drum is rotated in the opposite direction, The height of the blind can be easily adjusted simply by sending the ladder code from the holder to the outside. It is not necessary to remove the holder from the bottom rail, and fine adjustment of the height of the blind can be easily performed by adjusting the rotation direction and the rotation amount of the adjustment drum.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing an example of a blind of the present invention.

FIG. 2 is an enlarged sectional view of a main part of the present invention.

FIG. 3 is a perspective view of a holder and an adjustment drum of the present invention.

FIG. 4 is a bottom view of a main part of the present invention.

FIG. 5 is a diagram illustrating the operation of the present invention.

6 (a) and 6 (b) are partial cross-sectional views illustrating an operation when connecting a conventional ladder cord to a bottom rail.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Blind 12 Head box 14 Ladder cord 14a Middle cord 14b Vertical cord 16 Slat 17 Ladder cord support device 24 Bottom rail 30 Tape holder (holder) 30b1 Projection wall (receiving part) 30b2 Projection wall (guiding part) 32 Adjustment drum 32c Gear section

Claims (2)

[Claims] A ladder cord (14) suspended from a head box (12) allows a number of slats (1) to be mounted.
6), the upper end of the ladder cord (14) is connected to a ladder cord support device (17) provided in the head box (12), and the bottom rail arranged below the row of slats (16). Ladder code (1)
In the blind connected to the lower end of 4), the holder (30) is attached to the bottom rail (24), and the adjusting drum (32) is pivotally supported on the holder (30) so as to be rotatable with respect to the holder (30). Then, a gear portion (32c) is formed on the peripheral surface of the adjustment drum (32), and the holder (3) is formed.
0), a ladder code (1) between the gear portion (32c).
4) to form a receiving portion (30b1) for holding the gear portion (3).
2c) and the receiving portion (30b1), the ladder cord (14) is connected to the bottom rail (24), and the adjustment drum (32) is rotated, so that the ladder cord (1) is rotated.
4) A blind characterized in that the portion to be clamped is movable. 2. An adjusting drum (3) for a ladder cord (14) in the vicinity of the holder (30) and in the vicinity of a portion sandwiched between the gear portion (32c) and the receiving portion (30b1).
2) Ladder cord (14) to prevent winding around
The guiding section (3) for guiding the separation of the
0b2) is formed.