JP2003221985A - Open-close device for horizontally sliding screen - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an open-close device for a horizontally pulled screen capable of stably imparting the auxiliary force of an open-close operation to a stiles opening and closing the screen by a simple constitution. <P>SOLUTION: In the horizontally pulled screen in which a pair of the stiles 1 and 2 are connected by pantograph devices 7a and 7b while the screen is disposed between the stiles 1 and 2, the screen is extended and contracted and can be opened and closed by extending and contracting the pantograph devices 7a and 7b and open-close auxiliary equipment generating the auxiliary force of the open-close operation of the screen is installed to the pantograph devices 7a and 7b, both end sections of the first connecting shaft 8a constituting the pantograph devices 7a and 7b are composed of connecting members 14 conducting a connection through one end sections of the second connecting shafts 8b and urging means 15 imparting urging force urging both end sections of the first connecting shafts 8a in the pulling direction to the connecting members 14 in the open-close auxiliary equipment. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening / closing device for opening / closing a screen such as a horizontal pleated screen or an accordion curtain.

[0002]

2. Description of the Related Art In a folding door disclosed in Japanese Patent Publication No. 59-21438, a surface sheet is extensible between vertical frames and an extensible frame is arranged between the vertical frames. And
By moving one vertical frame along the rail,
The top sheet can be pulled out or folded.

One vertical frame is provided with a constant force spring for applying an assisting force when opening and closing the expandable frame. And
If the vertical frame is moved from the intermediate position in the direction of pulling out the top sheet, an auxiliary force in the direction of pulling out the top sheet acts on the vertical frame, and when the vertical frame is moved to the fully closed position, the same vertical frame Hold in that position.

When the vertical frame is moved from the intermediate position in the folding direction of the topsheet, an assisting force acts on the vertical frame in the folding direction of the topsheet to move the vertical frame to the fully open position. , Hold the vertical frame in its position.

[0005]

In the above-mentioned opening / closing device, the direction in which the assisting force is applied is changed by moving the slider, in which the biasing force of the constant force spring acts, within the guide groove. .

However, since the guide groove is formed only between the rotation fulcrum of the expandable frame and one end, the assisting force in the folding direction of the topsheet is smaller than the assisting force in the pulling direction.

Therefore, it is difficult to secure a stable assisting force in the pulling-out direction and the folding-in direction of the topsheet. Further, in order to smoothly move the slider in the guide groove, it is necessary to interpose a bearing between the slider and the guide groove, which causes a problem that the cost of parts is increased.

It is an object of the present invention to provide a horizontal screen opening / closing device with a simple structure, which can stably apply an assisting force for opening / closing operations to a frame for opening / closing the screen.

[0009]

According to a first aspect of the present invention, a pair of frames are connected by a pantograph device, a screen is disposed between the frames, and the pantograph device is expanded and contracted to expand and contract the screen. In a horizontal pull screen that is capable of opening and closing and the pantograph device includes an opening and closing assist device that generates an assisting force for the opening and closing operation of the screen, the opening and closing assist device includes both ends of a first connecting shaft that constitutes the pantograph device. A connecting member that connects the portion via one end of the second connecting shaft, and a biasing means that applies a biasing force to the connecting member in a direction to pull both ends of the first connecting shaft. Composed from.

According to a second aspect of the present invention, the connecting member is made of wire and the biasing means is made of a coil spring. In claim 3, one end of the wire is connected to one end of the first connecting shaft, the wire is hooked on an end of the second connecting shaft, and the other end of the wire is connected via the coil spring. And connected to the other end of the first connecting shaft.

In the present invention, one end of the wire is connected to one end of the first connecting shaft, and the wire is attached to the other end of the first connecting shaft through one end of the second connecting shaft. Then, the other end of the wire was connected to one end of the second connecting shaft via the coil spring.

According to a fifth aspect of the present invention, the frame is composed of a fixed frame and a movable frame, and the pantograph device includes a pair of pantograph devices including the first connecting shaft and the second connecting shaft as the fixed frame. A plurality of sets are connected to the movable frame, and the opening / closing auxiliary device is provided in a pantograph device connected to the fixed frame.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) In the horizontal pleat screen shown in FIGS. 1 and 2, two screens 3a and 3b are arranged between a fixed frame 1 and a movable frame 2. It
The moving frame 2 is movably supported along a hanger rail 4, and the screens 3a and 3b are formed to be expandable and contractable in a zigzag shape. Therefore, when the moving frame 2 is moved away from the fixed frame 1, the screens 3a and 3b are pulled out, and when the moving frame 2 is moved toward the fixed frame 1, the screens 3a and 3b are moved to both the frames 1 and 2. It is folded in between.

Between the screens 3a and 3b, four spacing members 5 are provided at predetermined intervals to prevent mutual spacing. Further, handles 6 are provided on the front and rear side surfaces of the moving frame 2.

Two sets of pantograph devices 7a and 7b are arranged between the fixed frame 1 and the movable frame 2 between the screens 3a and 3b. In the pantograph device 7a, two connecting shafts 8a and 8b are rotatably connected at an intermediate portion thereof.

One end of the connecting shaft 8a is rotatably supported by a bearing member 9 fixed to the upper portion of the fixed frame 1. One end of the connecting shaft 8b is rotatably supported by a bearing member 10 which is supported by a lower portion of the fixed frame 1 so as to be vertically movable.

In the pantograph device 7b, two connecting shafts 11a and 11b are rotatably connected at an intermediate portion thereof. One end of the connecting shaft 11a is rotatably connected to the other end of the connecting shaft 8b of the pantograph device 7a, and one end of the connecting shaft 11b is rotatable to the other end of the connecting shaft 8a of the pantograph device 7b. Are linked to.

The other end of the connecting shaft 11b has the moving frame 2 at its other end.
Is rotatably supported by a bearing member 12 fixed to the upper part of the. The other end of the connecting shaft 11a is rotatably supported by a bearing member 13 which is supported on the lower portion of the moving frame 2 so as to be vertically movable.

Therefore, when the movable frame 2 is moved toward the fixed frame 1, the bearing members 10 and 13 move downward along the fixed frame 1 and the movable frame 2 and, as shown in FIG. 6, a pantograph. The devices 7a, 7b are folded.

When the movable frame 2 is moved in the direction away from the fixed frame 1, the bearing members 10 and 13 move upward along the fixed frame 1 and the movable frame 2 as shown in FIG. ,
The pantograph devices 7a and 7b are expanded.

An opening / closing assisting device is attached to the pantograph device 7a. The opening / closing assisting device is a wire 1
4 and a coil spring 15. As shown in FIG. 3, one end of the wire 14 has the connecting shaft 8
It is fixed to the end of the connecting shaft 8b at the connecting portion between b and 11a. The other end of the wire 14 is hooked on a pulley 9a rotatably supported by the bearing member 9 and guided downward along the fixed frame 1 as shown in FIG. Is connected to the upper end of. The lower end of the coil spring 15 is connected to the bearing member 10 as shown in FIG.

The connecting shafts 8a, 8b, 11a, 11b and the wire 14 are inserted into the insertion holes 16 formed in the spacing member 5, respectively. Next, the operation of the horizontal pull pleat screen configured as described above will be described.

As shown in FIG. 1, the movable frame 2 is moved to a position separated from the fixed frame 1 by a predetermined distance, and the connecting shafts 8a, 8b and 11a, 11a of the pantograph devices 7a, 7b are moved.
When the included angle α of b becomes 90 °, the coil spring 1
5 is the most stretched state.

At this time, due to the urging force of the coil spring 15, the upper end of the connecting shaft 8b is pulled toward the fixed frame 1 in the direction of arrow A, and the lower end of the connecting shaft 8b is pulled upward in the direction of arrow B. To be

The force acting in the direction of arrow A and the force acting in the direction of arrow B are the same. Then, since the component force a of the force acting in the direction of the arrow A and the component force b of the force acting in the direction of the arrow B become equal, no rotational force acts on the connecting shaft 8b. Therefore, the connecting shafts 8a, 8b, 11a, 11b are maintained in this state.

From this state, when the movable frame 2 is moved toward the fixed frame 1, the coil spring 15 gradually contracts, as shown in FIG. 6, and the force acting in the arrow A direction and the direction acting in the arrow B direction. The force acting on is gradually reduced.

However, each connecting shaft 8a, 8b and 11
Due to the decrease in the included angle α between a and 11b, the component force a of the force acting in the direction of arrow A gradually becomes larger than the component force b of the force acting in the direction of arrow B.

As a result, a rotational force acts on the connecting shaft 8b in the direction of the component force a, and the moving frame 2 is connected with the connecting shafts 8a, 8b and 11.
An assisting force acts in a direction approaching the fixed frame 1 via a and 11b. Therefore, it becomes possible to move the movable frame 2 toward the fixed frame 1 with a slight operation force. After the movable frame 2 is moved to the vicinity of the fixed frame 1, the movable frame 2 is moved to the vicinity of the fixed frame by the auxiliary force. Held in.

At this time, the pantograph devices 7a and 7b and the screens 3a and 3b are folded between the fixed frame 1 and the movable frame 2. When the movable frame 2 is moved away from the fixed frame 1 from the state shown in FIG. 1, the coil spring 15 gradually contracts as shown in FIG. 7, and the force acting in the arrow A direction and the force acting in the arrow B direction. The force acting on is gradually reduced.

However, each connecting shaft 8a, 8b and 11
Due to the increase in the included angle α between a and 11b, the component force b of the force acting in the direction of the arrow B gradually becomes larger than the component force a of the force acting in the direction of the arrow A.

As a result, a rotational force acts on the connecting shaft 8b in the direction of the component force b, and the moving frame 2 has the connecting shafts 8a, 8b and 11b.
An assisting force acts in a direction away from the fixed frame 1 via a and 11b. Therefore, it becomes possible to move the movable frame 2 in a direction away from the fixed frame 1 with a slight operation force, and after the movable frame 2 is moved to the fully closed position of the pleated screen, the movable frame 2 is moved by the auxiliary force. Holds in the fully closed position.

With the horizontal pleated screen configured as described above, the following operational effects can be obtained. (1) Connecting shafts 8a, 8 of pantograph devices 7a, 7b
When the moving frame 2 is moved in the direction approaching the fixed frame 1 from the turning point where the included angle α of b, 11a, 11b is 90 °, the moving frame 2 is urged toward the fixed frame 1 by the opening / closing assist device. Auxiliary power can be generated. Therefore, the folding operation of the screens 3a and 3b can be performed with a slight operation force.

(2) When the movable frame 2 is moved in the direction away from the fixed frame 1 from the turning point at which the included angle α of the connecting shafts 8a, 8b, 11a, 11b of the pantograph devices 7a, 7b is 90 °, opening / closing The auxiliary device can generate an auxiliary force that urges the movable frame 2 in a direction away from the fixed frame 1. Therefore, the pull-out operation of the screens 3a and 3b can be performed with a slight operation force.

(3) The opening / closing assisting device can be realized with a simple structure including only the wire 14 and the coil spring 15. (Second Embodiment) FIG. 8 shows a second embodiment of a horizontal pleated screen embodying the present invention.

This embodiment differs from the first embodiment only in the construction of the opening / closing auxiliary device. The same components as those of the above-described embodiment are described with the same reference numerals. The opening / closing assisting device of this embodiment includes a wire 17, a coil spring 18, and an auxiliary coil spring 19. As shown in FIG. 9, the wire 17 has one end at the connecting portion between the connecting shafts 8b and 11a.
It is fixed to the end of b.

The other end of the wire 17 is hooked on the pulley 9a of the bearing member 9 and guided downward along the fixed frame 1 as shown in FIG. 10, and as shown in FIG. It is hooked on a pulley 10a of 10 and guided upward.

Then, it is connected to the lower end of the coil spring 18, and the upper end of the coil spring 18 is connected to the bearing member 9 via a wire 18a as shown in FIG.

As shown in FIG. 9, the auxiliary coil spring 19 has an upper end portion connected to the connecting shaft 8 via a wire 20a.
It is connected to the connecting shaft 21 of b and 11a, and the lower end is the wire 2
It is connected to the connecting shaft of the connecting shafts 8a and 11b via 0b.

In such an opening / closing assisting device, the wire 17
The pulley 10a of the bearing member 10 on which is mounted acts as a moving pulley. Therefore, based on the biasing force of the coil spring 18, the force FB acting on the lower end of the connecting shaft 8b in the direction of arrow B is twice the force FA acting on the upper end of the connecting shaft 8b in the direction of arrow A. Becomes

The angle α between the connecting shafts 8a and 8b and the force F
Component force f acting on both ends of the connecting shaft 8b by A and FB
The relationship between a and fb is shown in FIG. With the above configuration, at the turning point C of the component forces fa and fb, the included angle α of the connecting shafts 8a and 8b is around 45 °. Therefore, the included angle α of the connecting shafts 8a and 8b
It is possible to construct a horizontal pleated screen that is fully closed at about 90 °.

Further, the auxiliary coil spring 19 operates so as to compensate for the shortage of the auxiliary force for urging the movable frame 2 away from the fixed frame 1. With the horizontal pleated screen configured as described above, the following operational effects can be obtained.

(1) When moving the moving frame 2 in the direction approaching the fixed frame 1 from the turning point C at which the included angle α of the connecting shafts 8a, 8b, 11a, 11b of the pantograph devices 7a, 7b is 45 °, An assisting force that urges the movable frame 2 toward the fixed frame 1 can be applied. Therefore, screen 3
The convolution operation of a and 3b can be performed with a slight operation force.

(2) When moving the moving frame 2 away from the fixed frame 1 from the turning point C where the included angle α of the connecting shafts 8a, 8b, 11a, 11b of the pantograph devices 7a, 7b is 45 °, An assisting force that urges the movable frame 2 in the direction away from the fixed frame 1 can be applied. Therefore, the pull-out operation of the screens 3a and 3b can be performed with a slight operation force.

(3) When the movable frame 2 is moved from the turning point C in the direction away from the fixed frame 1, the component force fb is small and the auxiliary coil spring 1 does not have sufficient auxiliary force.
By 9, it is possible to compensate for the lack of auxiliary power.

(4) The opening / closing assisting device can be realized with a simple structure including only the wire 17, the coil spring 18, and the auxiliary coil spring 19. (5) Even if the screens 3a, 3b are pulled out to the fully closed state, the bearing member 12, which is supported by the moving frame 2, is set by setting the included angle α of the connecting shafts 8a, 8b and 11a, 11b to about 90 °. The interval of 13 can be made larger than that of the first embodiment. Therefore, compared to the first embodiment, when the screens 3a and 3b are fully closed, it becomes easier to keep the movable frame 2 parallel to the fixed frame 1.

The above embodiment can be modified as follows. As shown in FIG. 13, the wires 17 and the coil springs 18 of the second embodiment may be routed in the opposite directions in the vertical direction. The wire 17 and the coil spring 18 shown in FIG. 8 and the wire 17 and the coil spring 18 shown in FIG. 13 may both be provided. With such a structure, a large assisting force can be obtained. -In the second embodiment, the auxiliary coil spring 1
9 may be omitted. The pantograph device may be configured by connecting any number other than two sets. -The pantograph device may be provided in two stages in the vertical direction of the frame.

[0047]

As described above in detail, the present invention can provide a horizontal screen opening / closing device with a simple structure that can stably apply an assisting force for opening / closing operations to the frame for opening / closing the screen. .

[Brief description of drawings]

FIG. 1 is a front view showing a first embodiment.

FIG. 2 is a plan view showing a first embodiment.

FIG. 3 is a front view showing a connecting portion of a connecting shaft.

FIG. 4 is a front view showing a connecting portion between a bearing member and a connecting shaft.

FIG. 5 is a front view showing a connecting portion between the bearing member and the connecting shaft.

FIG. 6 is a front view showing the operation of the opening / closing device.

FIG. 7 is a front view showing the operation of the opening / closing device.

FIG. 8 is a front view showing a second embodiment.

FIG. 9 is a front view showing a connecting portion of a connecting shaft.

FIG. 10 is a front view showing a connecting portion between a bearing member and a connecting shaft.

FIG. 11 is a front view showing a connecting portion between the bearing member and the connecting shaft.

FIG. 12 is an explanatory diagram showing the relationship between the included angle and the component force.

FIG. 13 is a front view showing another example.

[Explanation of symbols]

1 frame (fixed frame) 2 frames (moving frame) 3 screen 7a Pantograph device 8a First connecting shaft 8b Second connecting shaft 14,17 Connecting member (wire) 15, 18 Biasing means (coil spring)

Claims (5)

[Claims] 1. A pair of frames are connected by a pantograph device, a screen is arranged between the frames, and the pantograph device is expanded / contracted so that the screen can be expanded / contracted and opened / closed. In a horizontal pulling screen provided with an opening / closing assisting device that generates an assisting force for the opening / closing operation of the screen, the opening / closing assisting device includes both end portions of a first connecting shaft that constitutes the pantograph device, and a second connecting shaft. It is characterized by comprising a connecting member for connecting via one end portion, and a biasing means for applying a biasing force for biasing both end portions of the first connecting shaft to the connecting member. Opening / closing device for pull screens. 2. The opening / closing device for a horizontal pulling screen according to claim 1, wherein the connecting member is made of a wire, and the biasing means is made of a coil spring. 3. One end of the wire is connected to one end of the first connecting shaft, the wire is hooked on an end of the second connecting shaft, and the other end of the wire is connected via the coil spring. The opening / closing device for a horizontal screen according to claim 2, wherein the opening / closing device is connected to the other end of the first connecting shaft. 4. One end of the wire is connected to one end of the first connecting shaft, and the wire is hung on the other end of the first connecting shaft through one end of the second connecting shaft, The opening / closing device for the horizontal screen according to claim 2, wherein the other end of the wire is connected to one end of the second connecting shaft via the coil spring. 5. The frame comprises a fixed frame and a movable frame,
The pantograph device is configured by connecting a plurality of sets of pantograph devices consisting of the first connecting shaft and the second connecting shaft between a fixed frame and a movable frame, and the opening / closing assisting device,
The opening / closing device for a horizontal screen according to claim 1, wherein the pantograph device is connected to the fixed frame.