JP2916530B2 - Runner with cable tensioning function and curtain opening and closing device using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable rail mounted on a guide rail used for opening and closing a curtain such as a motor-operated curtain. The curtain is held by the guide rail and is arranged in a loop along the guide rail. TECHNICAL FIELD The present invention relates to a runner with a rope tensioning function for connecting to a preformed rope and a curtain opening / closing device using the same.

[0002]

2. Description of the Related Art On a guide rail used for an electric opening / closing type curtain or the like, a rope serving as a rope for opening / closing the curtain is wound around pulleys arranged at both ends of the guide rail and stretched in a loop shape. Of the motor connected to the pulley
The string is configured to be moved forward and backward by the reverse drive to open and close a curtain connected to the string. By the way, when such a curtain is used repeatedly, it is inevitable that the string is stretched due to the operation of the string, changes in the temperature and humidity of the surrounding environment, and the slack is generated. If the string becomes slack, the curtain open / close switch is turned on. Even if the motor is driven, slippage occurs between the pulley and the string connected to the motor, the pulley idles, and the curtain cannot be opened or closed, or Even if it can be opened and closed, there is a time lag between the time when the opening and closing water is turned on and the time when the curtain actually starts opening and closing.

[0003] As a countermeasure, a tensioning function for the string is provided by connecting a string for opening and closing the curtain and the curtain, and by providing a runner for holding the curtain on the guide rail, especially a so-called leading runner for holding the leading end of the curtain. (Japanese Unexamined Utility Model Publication No. 2-6584 and Japanese Unexamined Utility Model Publication No. 3-112799) have been proposed. In the leading runner disclosed in the above publication, an adjusting bolt and a bracket that moves forward and backward by rotation of the adjusting bolt are provided on a side portion of the leading runner, and both ends of the string are connected to the bracket, whereby the slack of the string is reduced. In the case of occurrence of the above, the adjustment bolt is manually rotated by the driver to move the bracket backward,
The structure which absorbs the slack of the string is adopted.

[0004]

By the way, the conventional leading runner as described above has a structure in which the adjusting bolt is manually rotated by a driver to remove the slack every time the string is slackened. , That the work is cumbersome,
In addition, there is a problem that not only the brackets and the adjustment bolts for connecting the strings are required but also bulky, but also the number of parts of the leading runner is increased, so that an increase in cost cannot be avoided.

The present invention has been made in view of such circumstances, and a purpose thereof is to provide a cable for opening and closing a curtain,
An object of the present invention is to provide a small and inexpensive runner having a rope tensioning function capable of automatically maintaining a tensioned state, and a curtain opening / closing device using the same.

[0006]

A runner with a rope tensioning function according to the first invention is connected to a curtain-opening / closing rope stretched in a loop shape, and holds the rope in a tensioned state. In a runner with a tensioning function, a pair of stopper members are provided so as to be opposed to each other at a predetermined interval in a moving direction of the rope, and a movement area thereof is restricted between the stopper members, and one end of the runner has the rope. An elastic member connected to one end of the strip and the other end connected to the other end of the cord and held in an extended state is provided.

According to the first aspect of the present invention, the elastic member disposed on the runner is connected to the cable in a state where the elastic member is extended, so that the elastic member is provided even if the cable is slackened. Can be automatically absorbed by the contracting action of the cable, and the rope can be maintained in a tensioned state at all times.

A curtain opening / closing apparatus according to a second aspect of the present invention is a curtain opening / closing apparatus which has a pulley provided at one end of a guide rail for moving a curtain, a winch provided at the other end, and a loop extending and extending over these. And a leading runner that is interposed on a part of the rope and is movably disposed on the guide rail and supports a leading end of the curtain. The lead runner is wound around the winch for two or more turns, and the leading runner is positioned between stopper members that are opposed to each other with a predetermined distance therebetween in the moving direction, and its movement area is regulated. And an elastic member which is connected to the other end of the cord and the other end of the cord and held in an extended state.

According to the second invention, in addition to the functions and effects of the first invention, a pulley is provided at one end of the guide rail for opening and closing the curtain, and a winch is provided at the other end, and a cable is provided. It is stretched in a loop shape over the pulley and the winch, but is wrapped around the winch for two or more turns to prevent the rope from slipping even when a slight slack occurs in the rope. , The spinning of the winch can be prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings showing the embodiments. FIG. 1 is a perspective view showing a configuration of an electric curtain opening / closing device to which a runner according to the present invention and a curtain opening / closing device using the same are applied, and FIG. 2 is an enlarged perspective view of a leading runner. , A guide string for ropes, 3, 4 a leading runner, 5 a curtain, M a motor, and C an operation unit.

The guide rail 1 is formed in a substantially C-shape with a downward cross section, has a guide groove 1a along the center of the lower surface as shown in FIG. 2, and has caps 11 and 14 at both ends to cover the respective open ends. Reference numeral 12 is externally fitted and fixed, and is erected along, for example, an upper frame of a window. In the guide rail 1,
A string 2 serving as a cable is provided between the two caps 11 and 12 in a loop shape, and is interposed on the guide rail 1 in the middle of the string 2 and further connected to the head of the curtain 5. Two leading runners 3, 4 are slidably loosely fitted.

A winch 13 having a U-shaped groove is supported in the cap 11, and a pulley 14 having a V-shaped groove is supported in the other cap 12 with their axes perpendicular to each other. The string 2 is stretched in a loop shape across the winch 13 and the pulley 14. The winch 13 is made of urethane rubber, and has a configuration capable of fulfilling the function of preventing the string 2 from slipping. The pulley 14 is made of resin or metal such as aluminum. The string 2 is formed using a material having as small an elasticity as possible, such as Kevlar fiber or wire, and the lead 2 is inserted through two leading runners 3 and 4 interposed at approximately 1/2 length. The cord 2 is formed in a loop as a whole, and the string 2 is wound around the winch 13 two or more turns, and the pulley 14 is wound one turn.

The winch 13 is integrally provided with a large-diameter gear 13a coaxially on one side thereof.
A timing belt 13c is stretched between a and a small-diameter gear 13b pivotally supported in the cap 11 in parallel with the winch 13. An output shaft of a motor M is connected to the gear 13b, and the motor M can be rotated forward or backward by an operation unit C or stopped at an arbitrary position.

Since each of the leading runners 3 and 4 is substantially the same in structure, the leading runner 3 on one side will be specifically described. FIG. 3 is an enlarged sectional view taken along line III-III in FIG.
FIG. 4 is an enlarged front view and an enlarged left side view of the leading runner. The leading runner 3 is integrally formed of a synthetic resin having excellent wear resistance, and is elongated in plan view as shown in FIGS. A pair of stopper pieces 32a and 32b are erected on opposite sides of the upper surface of the upper guide piece 31 in the form of a rectangular plate, and are opposed to one side of the same side. A pair of guide rods 33a, 33b are vertically suspended at a predetermined interval in the front-rear direction in a region on the front end half thereof, and lower guide pieces 34 are provided at lower ends of both guide rods 33a, 33b in parallel with the upper guide piece 31. A runner body is formed by hanging a mounting piece 35 on the lower surface of the lower guide piece 34 so as to form a T-shape with the lower guide piece 34. A coil spring 36 is provided between the stopper pieces 32a and 32b in the runner body. And, also to the mounting piece 35 is constructed by fixing a hanging hanging rod 37 of the curtain 5.

The length of the coil spring 36 when no tension or compression force is applied is equal to the length of the two stopper pieces 32.
a, shorter than the length between 32a and 32b.
Stop rings 36a and 36b are provided to connect the ends of the string 2 to the stopper rings 32a and 32b through holes 32c of the stopper pieces 32a and 32b.

When the string 2 is connected to the coil spring 36, the coil spring 36 is in a state of being extended by a predetermined length, and when the string 2 is pulled in any direction, the stopper rings 36a and 36b are connected to the stopper pieces 32a. , 32b
, The movement area thereof is restricted, and the relative movement between the string 2 and the leading runner 3 is prevented. It is needless to say that an elastic member such as rubber can be used instead of the coil spring 36.

The hanging rod 37 is made of metal and is shown in FIG.
As shown in FIG. 4, it is bent at a predetermined interval at two points in the intermediate portion, and both ends are formed so as to extend in opposite directions and parallel to each other. The base end portion is fixed to the mounting piece 35 with a set screw 37b in a state where the hole 3
The hanging member 5a of the curtain 5 is locked to 7a as shown in FIG.

As shown in FIG. 3, the leading runner 3 has an upper guide piece 31 and stopper pieces 32a, 32 at both ends.
b is located inside the guide rail 1, the lower guide piece 34, the mounting piece 35 and the hanging rod 37 are located outside the guide rail 1, and the guide rods 33 a and 33 b are located inside the guide groove 1 a of the guide rail 1. And is slidably fitted on the guide rail 1. As the leading runner 3 moves along the guide rail 1,
A and 33b mainly regulate left and right swings with respect to the guide rail 1, and upper and lower guide pieces 31 and 34 mainly regulate upward and downward swings with respect to the guide rail 1, respectively.

The operation of such an embodiment is shown in FIG.
The operation will be described with reference to the operation explanatory diagrams shown in FIGS. When the motor M is not driven, that is, when the curtain 5 is in a stationary state, the coil springs 36 provided on each of the leading runners 3 and 4 usually have the coil springs 36 as shown in FIGS. Both stopper pieces 32a, 32
b, both retaining rings 36a, 36b are maintained in a non-contact state with the stopper pieces 32a, 32b.

Now, as shown in FIG. 5A, the motor M is driven while the curtain 5 is closed, and the winch 1 is turned on.
At the moment when the string 2 starts to be rotated in the direction of the arrow by the rotation of 3, the string 2 is pulled on one side of the winch 13 by the rotation of the winch 13 and slightly relaxed on the other side. 4, the coil springs 36 are extended, and the retaining ring 36 b is
It moves to the position where it abuts on b, and at that position, it starts to move integrally with the leading runners 3 and 4, and the curtain 5 is opened.

On the other hand, when closing the curtain 5 as shown in FIG. 5 (b), the motor M is driven, and the string 2 is rotated by the rotation of the winch 13.
As a result, the coil springs 36 are extended in the leading runners 3 and 4, respectively, and the stop ring 36a moves to a position where the stopper ring 32a comes into contact with the stopper piece 32a. Then, the movement starts integrally with the leading runners 3 and 4, and the curtain is closed.

That is, at the moment when the motor M is driven, the coil spring 36 expands and the impact applied to the string 2 is reduced, and the life of the string 2 can be extended. Further, while the curtain 5 is closed and opened, the slack is absorbed by the contraction force of the coil spring 36 and the string 2 is maintained in a tensioned state. Moreover, the string 2 is wound around the winch 13 for at least two turns, and the string 2 itself is also formed of a material having extremely low elasticity such as a wire or Kevlar fiber, so that there is little slack that occurs over time and both coils are formed. By setting the length of expansion and contraction of the spring 36 appropriately, the tension can be maintained without slack for a long time.

In the above-described embodiment, a case has been described in which both the leading runners 3 and 4 are provided with a tensioning function for the cords. However, only one of the leading runners may be provided. A tension function may be provided. Further, in the embodiment, the case where the present invention is applied to a curtain opening / closing device is shown, but it is needless to say that the present invention can be applied to a curtain opening / closing device for a theater, for example. Furthermore, in the embodiment, the double-opening curtain opening and closing device has been described,
The present invention can be applied to a device having a structure that can be opened and closed independently on the left and right, and a curtain opening and closing device for a curved window or a skylight.

[0024]

According to the first aspect of the present invention, since the elastic member in the extended state connected to both ends of the cable is disposed between the stopper members opposed to each other, the cable is constantly tensioned by the contraction force. The curtain can not be opened and closed due to the idle rotation of the drive source accompanying the loosening of the cable with inexpensive parts,
In addition, the present invention has excellent effects such as inconvenience such as occurrence of a time lag between the operation of the driving source and the opening and closing operation of the curtain can be eliminated, and the impact caused by the rapid rotation of the driving source can be reduced.

According to the second invention, in addition to the effect of the first invention, the winch and the rope are hardly slipped by winding the rope around the winch for two or more turns. In combination with the fact that the rope is always kept in a tensioned state, inconveniences such as inability to open or close the curtain due to idle rotation of the winch or delay in opening and closing operation of the curtain when the winch is driven are resolved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of an electric curtain opening / closing device to which a runner according to the present invention and a curtain opening / closing device using the same are applied.

FIG. 2 is an enlarged perspective view of a leading runner.

FIG. 3 is an enlarged sectional view taken along line III-III of FIG. 2;

FIG. 4 is an enlarged front view and an enlarged left side view of a leading runner.

FIG. 5 is an operation explanatory diagram showing a relationship between a leading runner and a string when the curtain is opened and closed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide rail 2 String 3, 4 Lead runner 5 Curtain 11, 12 Cap 13 Winch 14 Pulley 31 Upper guide piece 32a, 32b Stopper piece 33a, 33b Guide rod 34 Lower guide piece 36 Coil spring 37 Hanging rod M Motor C operation part

Claims (2)

(57) [Claims] 1. A runner with a rope tensioning function which is connected to a rope for opening and closing a curtain stretched in a loop and holds the rope in a tensioned state, wherein the runner has a predetermined interval in a moving direction of the rope. A pair of stopper members that are opposed to each other and are located between the stopper members, the movement area thereof is regulated, one end is connected to one end of the cable, and the other end is connected to the other end of the cable. A runner with a cord tensioning function, comprising an elastic member connected and held in an extended state. 2. A pulley arranged at one end of a guide rail for moving a curtain, a winch arranged at the other end, a rope for opening and closing the curtain stretched in a loop shape over the pulley, and the rope. And a leading runner supporting the leading end of the curtain, the rope being wound around the winch for at least two turns. Further, the leading runner is located between the stopper members that stand upright at a predetermined interval in the moving direction, and the movement area is regulated between the stopper members, and one end of the leading runner is connected to one end of the cable. A curtain opening / closing device comprising an elastic member having an end connected to the other end of the cable and held in an extended state.