JP4764650B2 - Balance weight of vertical blind - Google Patents

Description

  The present invention relates to a balance weight that is suspended and supported by a lower end of a slat of a vertical blind.

  In the vertical blind, a large number of slats are suspended and supported from the hanger rail, and each slat can be moved along the hanger rail by the operation of the operating device, and can be rotated.

  Balance weights are attached to the lower end portions of the slats, and the balance weights are connected to each other with a bottom cord at equal intervals. Such balance weights and bottom cords prevent unnecessary swinging of each slat.

Patent Documents 1 and 2 disclose a configuration in which a balance weight of a vertical blind is connected by a bottom cord.
No. 1-317759 Japanese Patent No. 03037571

  In the configuration described in Patent Document 1, a hook portion that opens upward is formed at both ends of the balance weight, and a bottom cord is hooked on the hook portion via a connecting ring. In such a configuration, when the resident accidentally steps on the bottom cord, there is a problem that the buttocks or the bottom cord is damaged.

  Moreover, in the structure described in patent document 2, when a bottom cord is stepped on, since a connection tool will remove | deviate from a balance weight, damage to a connection part is prevented. However, since it is necessary to integrally mold the connector to the bottom cord, and it is necessary to integrally mold the fitting for fitting the connector to the balance weight, the bottom cord is balanced to the balance weight via the coupling ring. There is a problem that the cost is increased as compared with the normal configuration attached to the.

  An object of the present invention is to provide a balance weight for a vertical blind that can prevent damage to the connection portion with the balance weight when the bottom cord is stepped on while the bottom cord is connected to the balance weight via a connection ring. It is to provide.

  In claim 1, the first and second claws are integrally formed on the balance weight case attached to the lower end of the slat, and the bottom cord is formed in the support hole formed by the first and second claws. In the vertical blind in which the attached connection ring is inserted and the balance weight is connected by the bottom cord, the case has a first claw extending downward and a second claw extending toward the first claw. The claw is formed to form the support hole, the gap between the tip of the second claw and the first claw is made smaller than the diameter of the coupling ring, and the first claw is formed on the upper surface of the second claw. When the downward force is applied to the connecting ring supported on the upper surface of the second claw, the inclined surface rising toward the claw, the inclination of the case causes the connecting ring to move away from the second claw. The first claw can be moved to the first claw, and the first claw can act on the connecting ring. Based on the power of the, with a flexible to fall off the coupling ring from the gap.

In Claim 2, said 1st and 2nd nail | claw was provided above the up-down direction center part of the said case.
In Claim 3, the horizontal part was provided in the upper surface of the base end part of said 2nd nail | claw, and the said slope part was provided in the front-end | tip part upper surface.

According to a fourth aspect of the present invention, the slope portion rises at an angle in a range of 20 degrees to 40 degrees with respect to the horizontal portion.
The balance weight according to claim 5, wherein the balance weight includes an insertion hole through which the slat can be inserted in an upper edge portion of the case, covers an outer surface of the case with the slat inserted through the insertion hole, and a lower end of the slat is disposed in the case. It can be sandwiched between them.

  According to the present invention, the balance weight of the vertical blind that can prevent damage to the connection portion with the balance weight when the bottom cord is stepped on while the bottom cord is connected to the balance weight via the connection ring. Can be provided.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the vertical blind shown in FIG. 1, a large number of runners 2 are supported in a hanger rail 1 so as to be movable, and slats 3 are supported from the runners 2 in a rotatable manner.

  Operation cords 4 and 5 are suspended from one end of the hanger rail 1. The spiral shaft 6 in the hanger rail 1 is rotated based on the operation of the operation cord 4 so that the leading runner 2a moves in the hanger rail 1. Then, with the movement of the leading runner 2a, the subsequent runner 2 moves, and the drawing operation or the folding operation of each slat 3 is performed.

  Further, the angle adjusting shaft in the hanger rail 1 is rotated based on the operation of the operation cord 5, and the angle of each slat 3 is adjusted in the same phase via the worm mechanism in each runner 2.

  Balance weights 7 are attached to the lower ends of the slats 3, and the balance weights 7 are connected at equal intervals by bottom cords 8. As shown in FIG. 2, the balance weight 7 is formed so that the case 9 can be folded with the lower end portion as a rotation fulcrum, and a weight plate is accommodated in the case 9. The case 9 is formed of synthetic resin, and an insertion hole 10 for inserting the slat 3 is formed at the upper end portion thereof.

  The balance weight 7 is held at the lower end of the slat 3 by covering the outer surface of the case 9 with the slat 3 inserted through the insertion hole 10 and sandwiching the end of the slat 3 in the case.

  The upper edge portion of the case 9 is formed to be slightly wider than the width of the slat 3, and the bottom cord 8 is attached to both sides of the wide portion 11. As shown in FIGS. 3 and 4, the wide portion 11 is formed with a first claw 12 extending downward, and the tip of the first claw 12 projects obliquely toward the side edge of the case 9. ing.

  A second claw 13 extending obliquely upward toward the first claw 12 is formed on the side edge of the case 9 at a position corresponding to the middle portion of the first claw 12. The upper surface of the second claw 13 extends in the horizontal direction and then extends obliquely upward at an angle of about 30 degrees.

  A connecting ring 14 formed by bending a metal wire is attached to the bottom cord 8, and the connecting ring 14 extends from the gap between the first claw 12 and the second claw 13 to the claw 12, 13 and the case 9. It is inserted into a support hole 15 formed between them, and is always supported suspended by the second claw 13.

  The gap between the first claw 12 and the second claw 13 is formed to be slightly narrower than the diameter of the connection ring 14, and the connection ring 14 is pushed in while the first claw 12 is bent outward. The connecting ring 14 can be inserted into the support hole 15.

  Therefore, the bottom cord 8 is suspended and supported by the balance weight 7 by pushing the connecting ring 14 into the support hole 15 and hooking it on the second claw 13. At this time, the connecting ring 14 is positioned on the horizontal portion 16 on the upper surface of the second claw 13 and slightly contacts the slope portion 17. The hanging position of the connecting ring 14 is a position that is lowered from the upper edge of the case 9 by about 1/3 of the height dimension of the case 9.

  In the vertical blind provided with the balance weight 7 to which the bottom cord 8 is connected in this manner, when the bottom cord 8 is stepped on by the occupant, the connecting ring 14 is pulled downward. Thus, the balance weight 7 is inclined, and the connecting ring 14 moves from the second claw 13 onto the first claw 12. Then, as shown in FIG. 6, the first claw 12 is bent, the gap between the first claw 12 and the second claw 13 is enlarged, and the connecting ring 14 is dropped from the support hole 15.

Further, when the connecting ring 14 dropped from the support hole 15 is reinserted into the support hole 15, the balance weight 7 is connected again by the bottom cord 8.
With the balance weight of the vertical blind configured as described above, the following operational effects can be obtained.
(1) When the occupant steps on the bottom cord 8, the connecting ring 14 falls off from the case 9 of the balance weight 7, so that the connecting portion between the bottom cord 8 and the case 9 can be prevented from being damaged.
(2) The first and second claws 12 and 13 can be formed integrally with the case 9. Further, the bottom cord 8 and the connecting ring 14 can be the same as the conventional products. Therefore, the manufacturing cost is not increased.
(3) By providing the horizontal part 16 and the slope part 17 on the upper surface of the second claw 13, the connecting ring 14 is normally held by the horizontal part 16 to prevent the connecting ring 14 from being dropped unnecessarily. be able to.
(4) When the bottom cord 8 is stepped on and the case 9 is tilted as shown in FIG. 5, the inclined ring portion 17 guides the connecting ring 14 to the gap portion between the first claw 12 and the second claw 13. Can do. Therefore, when the bottom cord 8 is stepped on, the first claw 12 can be bent to reliably drop the connecting ring 14.
(5) When the case 9 is tilted, the slat 3 is twisted with respect to the case 9, but when the case 9 is tilted, the bottom cord 8 is dropped, so the twist of the slat 3 is slight and easily returns to the original position. Can be made.
(6) Since the second claw 13 is provided above the central portion of the case 9 in the vertical direction, the case 9 can be reliably tilted when a downward force is applied to the bottom cord 8.

You may implement the said embodiment in the following aspects.
-It can also be applied to a balance weight that supports the suspension of the slat by holding the slat at the lower end of the case without wrapping the slat around the balance weight case.
-The slope part 17 of the 2nd nail | claw 13 is good also as a slope which stands | starts up in the range of 20 to 40 degree | times with respect to the horizontal part 16. FIG.
-The upper surface of the 2nd nail | claw 13 is good also as only a slope part.

It is a front view which shows a vertical blind. It is a perspective view which shows a balance weight. It is a front view which shows the connection part of a case and a bottom cord. It is a front view which shows the connection part in the state where the case inclined. It is a front view which shows the state in which the balance weight inclined. It is a front view which shows the state which the bottom cord fell from the case.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hanger rail 2 Runner 3 Slat 5 Tilt axis 7 Balance weight 8 Bottom cord 9 Case 12 First claw 13 Second claw 14 Connection ring 16 Horizontal part 17 Slope part

Claims (5)

First and second claws are integrally formed on the balance weight case attached to the lower end of the slat, and the connecting ring is attached to the bottom cord in the support hole formed by the first and second claws. In a vertical blind in which the balance weight is connected by the bottom cord,
A first nail extending downward and a second nail extending toward the first nail are formed in the case to form the support hole, and the tip of the second nail and the first nail A connecting ring supported on the upper surface of the second claw, and having a slope portion that rises toward the first claw on the upper surface of the second claw. When a downward force acts on the connecting ring, the connecting ring can be moved from the second claw to the first claw by the inclination of the case, and the first claw acts on the connecting ring. Based on the above, the vertical blind balance weight is provided with flexibility to drop the connecting ring from the gap.   The balance weight of the vertical blind according to claim 1, wherein the first and second claws are provided above a central portion in the vertical direction of the case.   The balance weight of the vertical blind according to claim 1 or 2, wherein a horizontal portion is provided on the upper surface of the base end portion of the second claw and the slope portion is provided on the upper surface of the distal end portion.   The balance weight of the vertical blind according to claim 3, wherein the slope portion rises at an angle in a range of 20 to 40 degrees with respect to the horizontal portion.   The balance weight has an insertion hole through which the slat can be inserted at the upper edge of the case, covers the outer surface of the case with the slat inserted through the insertion hole, and the lower end of the slat can be sandwiched between the cases The balance weight of the vertical blind according to any one of claims 1 to 4, wherein the balance weight is a vertical blind.

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