JP2549959Y2 - Runner drive cord holder for curved curtain rail device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a curved curtain rail device suitable for use in a corner window or a U-shaped bay window, for example, so that the opening and closing operation of the curtain can be performed lightly without interruption. The present invention relates to a runner drive cord holder for a curtain rail.

[0002]

2. Description of the Related Art In a curved curtain rail, a runner driving code (hereinafter referred to as a code) for driving a leading runner is provided.
A plurality of runner drive cord holders (hereinafter referred to as cord holders) are stretched on the inner peripheral surface of the rail so as to be attracted to the curtain rail. However, since the cord is hung over the pulleys on the inside of both ends of the curtain rail and both ends are fixed to the leading runner, the cord is doubled, and one of the cords slacks and hangs down when opening and closing the curtain,
The cord drops off from the cord holder, causing a delay in opening and closing the curtain.

For this reason, the cord holder has been provided with a droop preventing piece for receiving the hanging cord. It has a shape protruding from the lower side of the guide roller for guiding the cord toward the curtain rail or upward. Due to the presence of the anti-drooping piece, the loosened cord does not come off the guide roller, and does not immediately fall off the cord holding tool.However, due to the looseness of the cord, the cord is about as thick as the cord near the curtain rail. After all, it sometimes dropped out of some gaps. Therefore, it is necessary to lengthen the droop prevention piece and bring it closer to the side of the curtain rail, but the cord to be guided by the guide roller has both ends fixed to the cord fixing part of the leading runner, so this cord fixing part and the droop prevention The lead runner cannot pass in front of the cord holder due to the collision with the pieces.

Conventionally, a solution disclosed in Japanese Utility Model Publication No. 1-39343 has been devised as a solution to this problem, in which a drooping prevention piece is pivotally supported below the cord holder, and a mounting portion for attaching the drooping prevention piece is provided. And a coil spring is interposed between them so that the droop preventing piece can be elastically rotated. In other words, this is a configuration in which the anti-drooping piece is fixed to one end of the coil spring in a natural state where no load is applied, and in a neutral position where the anti-drooping piece is not inclined to the left or right in the natural state, in other words, It was set to be located at the position. When the cord fixing portion of the leading runner comes into contact with the anti-drooping piece, the anti-drooping piece acts by rotating and displacing so as to avoid the load.

[0005]

However, in the case where the rotation displacement of the drooping prevention piece is constituted by a coil spring, the state when the drooping prevention piece is located at the drooping prevention position is unstable. There is a problem that a gap is easily formed between the side and the cord, and the cord falls off from this part.

[0006] That is, when in the drooping prevention position, the drooping prevention piece is similar to being fixed to one end of the coil spring in a zero load state, and is merely placed in the drooping prevention position by the coil spring. For this reason, the hanging prevention piece is easily rotated, for example, due to contact or friction with the cord guided by the guide roller while loosening, and an undesired gap is opened between the side and the curtain rail side. become.

[0007] In view of the above, in consideration of the points to be improved as described above, the present invention makes it possible to make the condition for applying a rotational displacement to the droop preventing piece constant and to stabilize the state of the droop preventing piece in the droop preventing position. To achieve a reliable droop prevention function,
An object of the present invention is to provide a runner drive cord holder for a curved curtain rail device.

[0008]

According to the present invention, a runner drive cord for driving a leading runner is wound around pulleys at both ends inside a curtain rail having curved portions, and the runner drive cord is connected to a curved inner peripheral surface of the curtain rail. The runner drive cord is fixed to a leading runner running in the curtain rail, and a runner drive cord holder for pulling the runner drive cord toward the curtain rail is attached to the curtain rail, A curved curtain rail device comprising a runner drive cord holder provided with a droop preventing piece protruding toward a curtain rail side in order to prevent the runner drive cord from drooping, wherein the droop preventing piece is fixed to a lead runner cord. The cam surface is integrally formed on the rotation peripheral surface of the drooping prevention piece, and is rotatably displaceable by contact of the portion. It is a runner drive cord holder for a curved curtain rail device in which an elastic body for elastically holding the lower prevention piece so that its posture can be displaceably elastically held in a state where the runner drive cord is prevented from hanging is abutted against the cam surface. And

[0009]

The runner drive cord holder of the curved curtain rail device according to the present invention normally holds the posture of the droop preventing piece positively at the droop preventing position by surface contact between the cam surface and the elastic body, and in a stable state, The hanging piece is brought close to the side surface of the curtain rail to prevent the runner drive cord from sagging when the curtain is opened and closed.

When the leading runner fixing both ends of the runner drive cord to the cord fixing portion passes through the runner drive cord holder, specifically, in front of the hanging prevention piece,
In response to the contact of the cord fixing portion, the droop preventing piece presses an elastic body such as a leaf spring on the cam surface of the integrally formed heart cam, for example, and turns from the droop preventing position to allow the leading runner to pass. After passing through the leading runner, the cam surface and the anti-drooping piece immediately respond to the elastic return of the elastic body, and the anti-drooping piece returns to the original anti-drooping position and continues to prevent the runner drive cord from drooping.

[0011]

As described above, according to the present invention, drooping is prevented by the surface contact between the cam surface formed on the rotating peripheral surface of the drooping preventing piece and the elastic body abutting against the cam surface. Since the posture of the piece is positively held, the posture in the hanging prevention position is given more stability than in the case of the coil spring structure, and the hanging of the cord can be reliably prevented.

[0012]

An embodiment of the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 2, the curved curtain rail device 1 stretches a runner drive cord 3 (hereinafter, referred to as a cord) on the curved inner peripheral surface side of the curtain rail 2 to give an action thereto. Lead runner 4 in curtain rail 2
Is to be run.

Pulley boxes 6 and 6 each having a built-in pulley 5 are attached to the inside of both ends of the curtain rail 2, and a predetermined number of runner drive cord holders 7 are provided on the inner peripheral surface side of the curved portion.
(Hereinafter referred to as a cord holder). The cord holders 7 for holding the cord 3 toward the curtain rail 2 are provided with two guide rollers 8a and 8b at the top and bottom, and both ends of the cord 3 to be stretched are fixed to the leading runner 4. The portion from to the respective pulleys 5 is guided by the lower guide roller 8b.

For this reason, the cord fixing portion 9 of the leading runner 4 for fixing both ends of the cord 3 moves between the curtain rail 2 and the cord holder 7 with both ends of the cord 3.

A more detailed description of the cord holder 7 (runner drive cord holder) will be given next with reference to FIG.

FIG. 3 is an exploded view of a main part of the cord holder 7 as viewed from below similarly to FIG.

A long upper plate 10 whose tip is bent downward.
From the end of the upper plate 10 via the side plate 11
The two guide rollers 8a and 8b described above are arranged between the guide roller 8a and the short lower plate 12 arranged in parallel, and a middle plate 13 is further provided between the guide rollers 8a and 8b. Two claw-shaped hanging prevention claws 14 projecting obliquely upward are formed at the end of the middle plate 13 to prevent the cord 3 guided by the upper guide roller 8a from hanging down during the curtain opening / closing operation. doing.

Similar to the hanging prevention claw 14, a structure for preventing the cord 3 from hanging down and dropping from the cord holder 7 is provided for the lower guide roller 8b.

A droop preventing member 16 having a droop preventing piece 15
Therefore, a heart-shaped cam 17 integrally formed at the end of the hanging prevention piece 15 and an elastic body 19 that is in surface contact with a cam surface 18 of the cam 17 are rotatably displaceable with respect to the lower surface of the lower plate 12. Mounting.

In the center of the cam 17, a shaft hole 21 corresponding to the shaft hole 20 of the lower plate 12 is formed, and guide rollers 8a and 8b are formed.
The shaft 23 can be supported together with the lower plate 12 and the lower guide roller 8 at the time of assembling by inserting a pin 23 from below the shaft hole 21 with a washer 22 interposed therebetween.
b, middle plate 13, upper guide roller 8a, and upper plate 10
The crimping is performed on the tip of the pin 23 which is inserted into the upper plate 10 and projects from the upper surface of the upper plate 10.

The elastic body 19 which is brought into surface contact with the cam surface 18 of the cam 17 is formed of a metal wire in an inverted concave shape, and when assembling, it is made to correspond to the lower plate 12, the middle plate 13 and the upper plate 10, respectively. The upper plate 10 is inserted into the two insertion holes 24a and 24b formed as described above, and fixed by bending a tip protruding from the upper surface of the upper plate 10. At the time of this fixing, care is taken so that the horizontal bar 19a of the elastic body 19 comes into surface contact with the cam surface 18.
One of the two insertion holes 24a and 24b is a long hole 2
4b, it is pushed and bent rearward in accordance with the rotation of the cam 17, so that a repulsive force for returning the position of the cam 17 to its original position can be stored.

As shown in FIG. 4, even if the curtain rail 2 is fixed to the curtain rail fixing portion 10a at the tip of the upper plate 10, its tip does not contact the curtain rail 2, as shown in FIG. , So as not to leave a gap through which the cord 3 passes.

The shape of the cam 17 of the anti-droop member 16 will be additionally described in relation to the length of the anti-droop piece 15. When the leading runner 4 traveling in the curtain rail 2 shown in FIG. 4 travels in front of the cord holder 7 for the purpose of the rotational displacement of the sag preventing member 16, the sag 15 of the cord holder 7 In order not to hinder the passage of the cord fixing portion 9, the rotation preventing member 15 is rotated left and right within a range in which the cord fixing portion 9 can pass, and the drooping prevention piece 15 is The cam surface 18 of the cam 17 is formed in accordance with the length of the sag 15 so that it can return to the original position again.

The cord holders 7 having such a hanging prevention member 16 first fix the curtain rail by screwing a fixing screw 26 into the screw hole 25 of the curtain rail fixing portion 10a. As shown in FIG. 2, the cord 3 is stretched to form the curved curtain rail device 1.

In each of the cord holders 7,...
The anti-drooping piece 15 is located in a neutral position facing the curtain rail 2 straight, that is, in the anti-drooping position. At this time, the drooping prevention member 16 is positively held by the elastic body 19 that is in surface contact with the cam surface 18, and the pin 23
The rotation of the cam 17 around the shaft is suppressed.

The leading runner 4 is the curtain rail 2
When the vehicle runs inside the vehicle and approaches the cord holders 7, as shown in FIG. 4, the drooping prevention piece 15 hinders the traveling of the leading runner 4.

However, at this time, the kinetic energy of the leading runner 4 during traveling is transmitted to the drooping prevention piece 15, which rotates the cam 17. As shown in FIG. 1, the cam 17 rotates and the cam surface 18 applies pressure to the elastic body 19 which comes into surface contact therewith. The elastic body 19 pressed rearward slides a portion inserted into the other long insertion hole 24b around the portion inserted into the one insertion hole 24a of the lower plate 12 within the insertion hole 24b. Let it elastically deform and store the repulsive force.

When the leading runner 4 has passed and the pressure against the drooping prevention piece 15 has disappeared, the elastic body 19 is allowed to return elastically, and immediately presses the cam surface 18 with its surface to prevent the drooping prevention member 16 (the cam 17 and the drooping member) from returning. The posture of the prevention pieces 15) is returned to the original position, and the drooping prevention pieces 15 whose leading ends approach the side surfaces of the curtain rail 2 prevent the cord 3 from drooping and falling again.

Since such an operation is shown during the operation of opening and closing the curtain, the hanging member 16 is stable when the hanging member 15 is located at the neutral hanging position, and fulfills its function reliably. Also, the movement when returning to the original posture after the rotational displacement is performed quickly and accurately, and the opening and closing operation of the curtain can be performed lightly without any delay.

The above embodiment is one embodiment of the present invention, and other structures can be adopted.

For example, the elastic body 19 is formed of a leaf spring, and one end of the elastic body 19 is fixed to the lower plate 12 of the cord holder 7, and the cam surface 1 is fixed.
8 may be brought into surface contact.

The cam surface 18 may be provided at any position as long as it is a peripheral surface of the hanging piece 15.

[Brief description of the drawings]

FIG. 1 is a plan view showing an operation state of a main part.

FIG. 2 is a perspective view showing a curved curtain rail device.

FIG. 3 is an exploded perspective view showing a main part of a runner drive cord holder (cord holder).

FIG. 4 is a partial cross-sectional side view showing a relationship between a runner drive cord holder (cord holder) and a cord fixing portion of a leading runner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Curved curtain rail apparatus 2 ... Curtain rail 3 ... Runner drive cord (cord) 4 ... Leader runner 5 ... Pulley 7 ... Runner drive cord holder (cord holder) 9 ... Cord fixing part 15 ... Hanging prevention piece 16 ... Hanging Prevention member 18: Cam surface 19: Elastic body

Claims (1)

(57) [Scope of request for utility model registration] 1. A runner drive cord for driving a leading runner is wound around pulleys at both ends inside a curtain rail having a curved portion, and the runner drive cord is stretched over a curved inner peripheral surface of the curtain rail. Both ends of the runner drive cord are fixed to the leading runner running in the curtain rail, and a runner drive cord holder for pulling the runner drive cord to the curtain rail side is attached to the curtain rail. A curved curtain rail device provided with a droop preventing piece protruding toward a curtain rail side to prevent a runner drive cord from drooping, wherein the droop preventing piece can be rotated and displaced by contact of a cord fixing portion of a leading runner. The cam surface is integrally formed on the rotation peripheral surface of the droop preventing piece, and the droop preventing piece is attached to the runner drive cord. Runner driving cord retainer curved curtain rail apparatus oppositely arranged displaceably elastic member to elastically hold its attitude abuts against the cam surface in a drooping preventing state.