JPH0211897Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an improvement of a curtain wire tensioning device for adjusting and maintaining the tension of an endless curtain wire.

When an endless curtain wire is circulated through a curtain winding device, unless the curtain wire is kept taut, the curtain wire cannot be smoothly circulated.

Therefore, as a curtain wire tensioning device for adjusting and maintaining the tension of an endless curtain wire, a structure in which one corner of the curtain wire is suspended and a weight suspended from a pulley is engaged with the end is known. ing.

In the above conventional configuration, the weight of the weight is used, so
When a large tension force is required, it is necessary to use a heavy weight, which makes it cumbersome to attach the weight and carries the risk of falling, so safety measures (fall prevention means) must be taken.

Therefore, instead of using weights, it may be possible to use the tip of a spring that is fixed to the floor to be fixed to the corner of the curtain wire, but this is cumbersome to attach and difficult to set the appropriate tension depending on the loose state. be.

In addition, as a configuration that uses the elastic repulsion force of a Coril spring instead of a weight, for example,
A tensioning device for a curtain runner belt is known from No. 37673.

In this device, a pair of front and rear lugs are integrally formed on a support body that pivotally supports a pulley, and are fitted onto a bolt, and a nut is screwed onto the bolt, and the bolt is inserted between the nut and the one lug. A spring is fitted externally.

This pulley support can adjust the tension of the belt.

However, since the biasing force of the coil spring always acts on the pulley support, when installing the curtain runner belt, the curtain runner belt must be attached against the biasing force, which is a troublesome work.

This invention was devised as a result of intensive research in view of the above circumstances, and its main purpose is to make it possible to lock the frame supporting the pulley in order to facilitate the installation of curtain wires and curtains. To provide a curtain wire tensioning device capable of fixing a pulley at a fixed position without tensioning a coil spring during work.

In order to achieve the above object, this invention is a device that tensions a suspended endless curtain wire using the elastic force of a coil spring. A frame body, a housing that fits the frame body on its side without any gaps and is slidable in the front and back direction, one end of which is connected to the rear surface of the frame body, and the other end of which is connected to the rear inner surface of the housing. and a coil spring biased in the contraction direction, and a locking means for releasably locking the frame to the casing at the front of the casing. do.

Hereinafter, preferred embodiments of this invention will be described based on the drawings.

FIGS. 1 and 2 show the overall mechanism of a curtain opening/closing device using a conventional curtain wire tensioning device, and exemplify a so-called pull type and a single pull type.

FIG. 3a is a schematic diagram illustrating the overall mechanism of the curtain opening/closing device in relation to an endless curtain wire, in which the corner of the endless curtain wire 1 stretched in the horizontal direction is connected to a pair of pulleys. A curtain wire winding mechanism 3 and a curtain wire tensioning device 4 are provided to be guided vertically through 2 and engage the corners thereof.

FIG. 3b is a schematic diagram illustrating the overall mechanism of the curtain opening/closing device of this invention in relation to an endless curtain wire. A parent runner 5 and a large number of small runners 6, 6... are attached,
By rotating the curtain wire 1 with the winding mechanism 3, the parent runners 5 and 5 can approach or separate from each other to open and close the curtain.

Moreover, in the case of a single-pull type, it is sufficient to provide only one parent runner 5, and the other configurations are the same.

Although an automatic or manual curtain winding device is used to circulate and drive such an endless curtain wire 1, the curtain wire tensioning device according to this invention can use any type of curtain winding device. It may be used.

The curtain wire tensioning device 4 of this invention has a fourth
As shown in FIGS. 6 to 6, there is a frame 21 that is slidably moved within an elongated casing 20, and a frame 21 that is rotatably supported within the frame 21 and that has a curtain on its circumferential surface. Pulley 2 having an annular groove 22a that engages with the wire
2, and a coil spring 23 whose one end is locked to a part of the frame 21 and the other end is locked to the bar 25 at the end of the housing 20, and which is always biased in a direction to keep the curtain wire tensioned. It is made up of

In the figure, 24 is a screw as an example of an engagement means for temporarily fixing the frame 21, and is removably screwed into a matching screw hole provided in the housing 20 and the frame 21. The frame body 24 is fixed in a standby position within the housing 20.

Therefore, when one corner of the endless curtain wire is hooked to the annular groove 22a of the pulley 22 and the screw 24 is removed to release the lock, the frame 2
1 is pulled in the wire tensioning direction by the biasing force of the coil spring 23, thereby tensioning the curtain wire.

This locking means 24 is not limited to the above-mentioned screw fastening structure, and may be replaced with any known engaging means as appropriate.

Therefore, for example, an elongated hole is provided in the housing 24 and a locking shaft is provided protruding from the tip side of the elongated hole, while a handle that is tiltably provided on the frame is provided protruding from the frame 21. If you make it stick out from the long hole above,
When the coil spring is in the expanded state, it can be engaged with the locking shaft by tilting the handle and set in the locked state.

Therefore, after locking the curtain wire, tilt the handle in the opposite direction to release the locked state.
The curtain wire can be tensioned by the biasing force of the coil spring.

Next, if you want to return to the locked state again,
By returning the handle and tilting the handle in the same way as when the handle was locked, it becomes possible to resist the elastic force of the coil spring 23 and reset the frame 21 to the standby position.

Note that 26 is an indoor hole for the curtain wire, and serves as an insertion port for the curtain wire wound around the pulley 22 together with the opening 20' of the housing 20.

Further, 27 is a fixed hook receiver on which the hook of the curtain can be hung, and the hook on the fixed end side of the curtain can be engaged with it.

In the illustrated example, the curtain wire tensioning device configured as described above is installed on an extension of the curtain rail, so the pulley 22 is arranged in a horizontal position, and one end of the endless curtain wire is suspended. It can be installed and set in a horizontal position without having to do anything.

This mounting position is not particularly limited in this invention, and may be any other suitable mounting position.

As described above, in this invention, the frame body is locked at the front position of the housing using the locking means, the curtain wire is attached with the pulley fixed at a fixed position, and installation work such as attaching the curtain to the runner is performed. As a result, the curtain wire is not displaced by the action of the coil spring due to the load applied during work, and work efficiency can be improved.

[Brief explanation of drawings]

1 and 2 are perspective views of a curtain opening/closing device using the curtain rolling device of the present invention, and FIG. 3 is a schematic diagram illustrating the mechanism of the curtain opening/closing device in relation to a curtain wire. For example,
b is the case of this invention, FIG. 4 is a plan view of a curtain wire tensioning device according to an embodiment of the invention, and FIG.
The figure is a side sectional view, and FIG. 6 is a front view thereof. 1... Endless curtain wire, 2... Pulley, 3...
...Curtain wire winding device, 4...Tensioning means,
20... Housing, 21... Frame, 23... Spring, 24... Locking means.

Claims (1)

[Claim for Utility Model Registration] A device for tensioning a suspended endless curtain wire using the elastic force of a coil spring, comprising: a frame body with a channel-shaped cross section that pivotally supports a pulley that latches the corner of the curtain wire; , a housing in which the frame is fitted without any gaps on its sides and is slidable in the front-rear direction, and one end is connected to the rear surface of the frame and the other end is connected to the rear inner surface of the housing to reduce the size. 1. A curtain wire tensioning device comprising: a coil spring biased in the direction of the curtain wire; and locking means for releasably locking the frame body to the housing in front of the housing.