JP7055374B2 - Horizontal screen device - Google Patents

Description

The present invention includes a slide rail that holds and guides the lower end of a screen that opens and closes by horizontal pulling, and the slide rail moves from the lower end of one side frame of the screen frame into the side frame according to the opening and closing of the screen. It is a barrier-free type having a structure for entering and exiting, and relates to a horizontal pulling screen device that facilitates attachment / detachment for assembling an internal unit and maintenance thereof with respect to a screen frame installed at a building opening.

In a screen device in which the screen is alternately folded back in the opposite direction to allow it to be extended and opened and closed by lateral pulling, a slide rail that guides the lower end of the screen according to the opening and closing of the screen is provided on the screen. For example, a patent document in which the lower end of the stile material arranged on at least one end side in the opening / closing direction is moved in and out of the stile material so as to be led in and out along the lower end of the screen in the stretched state. It has already been disclosed in 1 and Patent Document 2. Such a screen device has the convenience that the slide rail is also stored in the frame material from the screen tensioning position when the screen is stored, whereby the installation position of the screen device is made barrier-free when the screen is stored. Because of this, it is often used in various buildings.

Therefore, the screen device equipped with this kind of slide rail not only makes it easy and inexpensive to install it in the opening of the building, but also simplifies the structure of each part in order to improve its maintainability. Before that, it is necessary to assemble the screen frame that forms the outer frame of the screen device, various internal units to be housed in the screen frame, and remove the internal unit for maintenance of them. However, the current situation is that it is not always proposed as a satisfactory configuration.

In particular, in the above-mentioned known screen device, the internal unit including the slide rail or the like housed in the screen frame is relatively relative to the screen frame directly installed in the opening of the building as the screen is opened and closed. Due to the complex displacement, the internal unit including the slide rail guides the lower end of the screen without interfering with various parts, and the internal unit for maintenance of the screen device is taken out and their It is desirable to configure it so that it is easy and easy to assemble. Further, in adopting such a configuration, it is desired to suppress an increase in the found size of the screen frame by using auxiliary parts or the like.

Japanese Unexamined Patent Publication No. 2005-23578 Japanese Unexamined Patent Publication No. 2005-36518

A technical object of the present invention is to provide a product that solves the above-mentioned problems in the above-mentioned horizontal pulling screen device provided with a slide rail that holds and guides the lower end portion of the screen that opens and closes by horizontal pulling. More specifically, in the horizontal pulling screen device, the internal unit including the slide rail or the like to be housed in the screen frame interferes with other parts with respect to the screen frame fixedly installed in the opening of the building. It is an object of the present invention to provide a horizontal pulling screen device that can be easily assembled and stably operated in such a manner that there is no such thing, and that can be easily disassembled for their maintenance.

In order to solve the above problems, according to the present invention, a screen frame forming an outer frame of a screen device to be installed in a building opening and a screen frame assembled to the screen frame and horizontally pulled and opened and closed by an operation frame are formed. A horizontal pull screen device composed of a stretchable screen and an internal unit having a slide rail that holds the lower end of the screen and guides the stretch, and has the following characteristic configurations. Equipment is provided.
Such a configuration, particularly, the horizontal pulling screen device according to the present invention has a screen frame forming an outer frame of the screen device, a screen assembled to the screen frame and opened and closed by horizontal pulling by an operation frame, and a lower end of the screen. It is an effective basic configuration for solving the above-mentioned problems that it is mainly composed of two elements, that is, an internal unit provided with a slide rail for guiding the portion.

One of the characteristic configurations in the present invention is, first, a support member in which the screen is arranged on the screen frame along the upper frame of the upper side thereof so as to face the side frame arranged at one end of the upper frame. The support member, which is stretched between the operation stile and the operation stile so as to be openable and closable by laterally pulling the operation stile, and the support member facing the side frame can be detachably engaged and fixed to the side frame, and they can be engaged and fixed. A guide accommodating space for accommodating the slide rail of the internal unit so as to be able to be taken out from the lower part is formed between the two.

In addition, the slide rail that holds the lower end of the screen and guides its extension in the present invention has a large number of short groove-shaped guide pieces that receive the lower end of the screen, and the connecting portions of the adjacent guide pieces are connected to each other. It is configured in a long groove shape by being rotatably connected, but as a characteristic configuration of the present invention, one end of the slide rail is connected to the lower end of the operation frame, and the other end is supported by the side frame and the support. The guide housing space between the members is curved upward from the lower end so as to be insertable, and guide protrusions are provided on both sides of the guide piece, and the guide protrusions are provided in the guide storage space. A guide surface is formed in which the guide protrusion is slidably contacted and the guide piece is led out and inserted into the guide accommodating space along a required path.

Further, in the present invention, the internal unit in a state where the slide rail is inserted to the inner end of the guide accommodating space along the guide surface of the support member and the support member, the screen and the operation frame are assembled to each other is provided. They are formed in a size that can be removed from the screen frame attached to the opening of the building.

In a preferred embodiment of the horizontal pulling screen device according to the present invention, when the side frame and the support member with which the support member in the screen frame abuts are abutted and fixed to each other, the side thereof. It is configured to have a contact surface that positions the space between the frame and the support member to be the required guide accommodating space for inserting the slide rail.

In another preferred embodiment of the horizontal pulling screen device according to the present invention, the lower end surface of the operation stile and the lower surface of the guide piece of the slide rail connected to the lower end of the operation stile slide with the opening and closing of the screen. A thin strip-shaped lower rail that guides the sliding of the operation stile and the guide piece of the slide rail is laid on the lower frame of the building opening, and straddles the lower rail on the lower end surface of the operation stile and the lower surface of the guide piece. A concave groove is provided for riding and sliding.

Further, in another preferred embodiment of the horizontal pulling screen device according to the present invention, the operation rail is laid on the lower frame of the building opening in a range from the storage position of the screen to the position where the screen starts to be expanded. The lower rail is the first rail portion, and the lower rail in the range from the portion beyond the first rail portion to the extension position of the screen is the second rail portion. In the 1 rail portion, except for the range in which the guide piece moves along the guide surface of the guide accommodating space, a hook-shaped engaging ridge is projected from the upper portion of the side surface of the thin band-shaped rail body, and the guide accommodating space is provided. By engaging the hook-shaped protrusions provided on both sides of the lower surface of the guide piece led out below the guide piece with the hook-shaped engaging ridge, the operation frame and the guide piece on the first rail portion are said to be the same. It is configured so that it does not separate from the first rail portion.

Further, in the second rail portion, a hook-shaped weakly engaged ridge is projected from the upper part of the side surface of the thin band-shaped rail body, and the hook-shaped weakly engaged ridge is the hook-shaped on the lower end surface of the operation frame. There is not enough protrusion to securely engage the protrusion, and the operating stile can be disengaged from the second rail portion due to the displacement of the engagement position. It is difficult for them to separate from the second rail part when a large number of them are connected, but if only a small number of hook-shaped protrusions of the guide piece are engaged with the second rail part, the second is due to lateral displacement of the guide piece in the traveling direction. It is configured to be detachable from the rail portion, which constitutes a detachment prevention mechanism that prevents the internal unit in the state where the support member, the screen and the operation frame are assembled from each other from the above screen frame assembled to the building opening. Will be done.

When installing the horizontal pulling screen device having the above configuration in the building opening, a screen frame forming the outer frame of the screen device is attached to the building opening in which the horizontal pulling screen device is to be installed in advance. Subsequently, a screen that can be opened and closed by laterally pulling the operation stile is stretched between the support member arranged to face the side frame arranged at one end of the upper frame and the operation stile, and the screen is stretched. By sliding the slide rail that guides the extension of the lower end of the screen connected to the lower end of the operation stile to the guide surface provided on the support member with the guide protrusions protruding from both sides of the guide piece. An internal unit including a screen, an operation frame, a slide rail, and the like is assembled to the support member, and the internal unit is held in a state of being ready for assembly with respect to the screen frame.

In the pre-assembly state of the internal unit, the internal unit is formed in a size that can be attached to the screen frame assembled to the building opening, and therefore, the internal unit is attached to the screen frame previously attached to the building opening. Can be easily attached. Further, in this state, the support member of the internal unit fitted in the screen frame is brought into contact with the side frame attached to one end of the upper frame of the screen frame and fixed to the internal unit. It is positioned and locked to the screen frame, whereby a predetermined guide accommodating space for inserting the slide rail is formed between the support member and the side frame of the screen frame.

When the internal unit is attached to the screen frame of the opening of the building in this way, the screen can be freely opened and closed by operating the operation frame. Further, when some abnormality occurs in the horizontal pulling screen device installed in this way and maintenance is required, the internal unit is temporarily moved to the storage position by operating the operation rail, that is, the internal unit is ready for assembly. In that state, the support member of the internal unit fitted in the screen frame is separated from the side frame of the screen frame, and then the operation frame and slide rail of the internal unit are attached to the second rail portion of the screen frame. When positioned above, the operation frame and slide rail can be easily detached from the second rail portion of the lower rail, so that the internal unit can be easily detached from the lower rail, and the slide rail is in this state. Can be easily maintained, inspected, or repaired in each part of the internal unit by pulling out the guide accommodating space.

According to the horizontal pulling screen device of the present invention described in detail above, the above-mentioned problem is solved in the above-mentioned horizontal pulling screen device provided with a slide rail that holds and guides the lower end portion of the screen that opens and closes by horizontal pulling. In order to provide a product, more specifically, in the above-mentioned horizontal pulling screen device, an internal unit including a slide rail or the like to be housed in the screen frame is provided with respect to a screen frame fixedly installed in a building opening. , It can be easily assembled and operated stably so as not to interfere with other parts, and it can be easily disassembled for their maintenance.

It is a front view schematically showing the structure of the screen storage state in the Example of the horizontal pulling screen apparatus which concerns on this invention. It is a horizontal sectional view schematically showing the same structure. It is a front view schematically showing the semi-extended state of the screen in the same Example. It is a vertical sectional view schematically showing the structure of the screen apparatus in the state of FIG. It is a schematic explanatory drawing which shows the mode of incorporating an internal unit into a screen frame. It is a schematic explanatory drawing which shows the state which completed the assembly of the internal unit in the aspect shown in FIG. (A) is a perspective view showing a state in which assembly of the slide guide is started with respect to the support member, and (b) is a perspective view in a state in which the assembly is further advanced. It is a partially broken perspective view of the lower rail. (A) to (d) are cross-sectional views showing the mode of engagement between the lower rail installed on the lower side of the building opening, the lower end surface of the operation stile moving above the lower rail, and the concave groove on the lower surface of the guide piece. (A) is the engagement relationship between the first rail portion of the lower rail and the concave groove of the operation stile, and (b) is the engagement relationship between the first rail portion and the concave groove of the guide piece. Shows the engagement relationship between the second rail portion and the concave groove of the operation stile, and (d) shows the engagement relationship between the second rail portion and the concave groove of the guide piece.

1 to 4 show an outline of an embodiment of a horizontal pulling screen device according to the present invention, and FIGS. 5 and 6 show a process of mounting an internal unit 5 described later on the screen frame 1.
This horizontal pulling screen device basically includes a slide rail 12 that holds and guides the lower end portion of the screen 8 that opens and closes by horizontal pulling, and is as shown in FIG. 2 in the illustrated embodiment. The case where the screen 8 which is alternately folded back in the opposite direction with a constant width and made expandable is used, but the screen is suitable for this kind of horizontal pulling screen device, and is not necessarily limited to that. not.

Explaining the specific components of the illustrated embodiment, the horizontal screen device has, as a main component, a screen frame 1 forming an outer frame of the screen device for installation in a building opening (not shown). An internal unit 5 provided with a stretchable screen 8 which is assembled to the screen frame and can be opened and closed by horizontal pulling by an operation frame 10, and a slide rail 12 which holds the lower end of the screen and guides the stretch. It has two elements.

The screen frame 1 guides the lateral movement of the upper end of the operation frame 10 attached to one end of the screen 8 by the downward concave groove 2a shown in FIG. 4, and is above the upper side that can accommodate the upper end of the screen 8. A screen 8 in a stretched state at a position facing the side frame 3 and one side frame 3 that holds the frame 2 and the screen 8 stored in the folded state via the support member 9 (FIG. 2). It is provided with a receiving frame 4 for receiving the operation frame 10 of the above, and is not provided with a lower frame facing the upper frame 2 in the illustrated embodiment, but it can be provided as needed.
If the screen frame 1 itself does not have a lower frame, the building opening frame located at the lower part of the screen frame 1 itself functions as the lower frame, or the lower rail 20 described later has the same. It can also have a function as a lower frame.

On the other hand, the screen unit 7, which constitutes a part of the internal unit 5 to be assembled to the screen frame 1, has a support member 9 arranged to face the side frame 3 arranged at one end of the upper frame 2 and an operation frame 10. The screen 8 can be stretched between them so as to sandwich the screen 8 from both sides, and the support member 9 and the operation stile 10 are connected to both ends of the screen 8 so that the screen 8 is sandwiched between the screen 8 and the screen 8. Is formed so that it can be opened and closed by pulling it sideways. The screen unit 7 is connected to the lower end of the operation frame 10 and extends along the lower end of the screen 8, and a slide rail is arranged so as to hold the lower end of the screen and guide its extension. It has twelve. The slide rail 12 is led out along the lower end portion of the screen 8 in the stretched state, and is also effective for suppressing the shaking of the lower end portion of the screen 8 due to an external force such as wind.

As shown in FIGS. 1, 3, 6 and 7, the slide rail 12 has a large number of short groove-shaped guide pieces 13 that receive the lower end of the screen 8 and is connected to the upper portion 13a of the adjacent guide pieces. The adjacent guide pieces 13 in the connecting portion 13a may be connected so that the connecting portion can be bent upward in a concave shape. For example, as shown in FIG. 7, a series of flexible wires 15 are inserted into the insertion holes 13c formed along the upper ends of the pair of side walls 13b and 13b facing each other on both sides of each guide piece 13. Then, the contact surface of the adjacent guide piece 13 is made a contact surface orthogonal to the insertion hole 13c, or the adjacent guide piece 13 is connected to the upper part of the side wall of the adjacent guide piece 13 by a pin or the like so as to be able to bend. Such a configuration can be adopted.

The slide rail 12 configured by connecting the guide pieces 13 is connected to the lower end of the operation frame 10 at one end thereof, and the other ends are connected to the side frame 3 by the bendable connection of the guide pieces 13. In the guide accommodating space 16 formed between the support member 9 and the support member 9, the guide accommodating space 16 is curved upward from the lower end thereof so as to be insertable. Smooth movement of the slide rail 12 is desirable. Therefore, as shown in FIG. 7, the guide piece 13 is provided with guide protrusions 13d at the upper ends of the side walls 13b and 13b on both sides thereof. On the other hand, the support member 9 is provided with a guide surface 17 in which the guide protrusion 13d is slidably contacted and the guide piece 13 is smoothly led out and inserted along a required path in the guide accommodating space 16. ..

In such a structure of the slide rail 12, since the guide protrusions 13d of a large number of guide pieces 13 come into contact with the guide surface 17 at multiple points, each guide protrusion 13d has a uniform contact force to the guide surface 17. Since a part of the guide protrusions 13d does not strongly come into contact with the guide surface 17, the movement of the guide piece 13 along the guide surface is facilitated.
Further, the support member 9 provided with the guide surface 17 is configured by joining the upper member 18a formed of a mold material and the lower member 18b formed of a molded product having a curved surface, but they are integrated. It can also be configured as.

The support member 9 facing the side frame 3 of the screen frame 1 has its surface on the receiving frame 4 side as a fixed surface for fixing one end of the screen 8 and at the same time as a storage area when the screen 8 is folded. The back surface side of the support member 9 is detachably abutted and fixed to the side frame 3 by engagement or other appropriate means, and the slide rail 12 of the internal unit 5 is placed between them. A guide accommodating space 16 is formed so as to be admitted and accommodated from the lower part. Therefore, between the side frame 3 for forming the guide accommodating space 16 and the support member 9, a contact surface for positioning the support member 9 with respect to the side frame 3 is appropriately provided, and the support member is provided. It is necessary to provide contact surfaces 3a and 9a for holding the 9 in its positioning position. As a result, the required guide accommodating space 16 for inserting the slide rail 12 between them is formed between the side frame 3 and the support member 9 when they are abutted and fixed to each other. Positioning is configured to be performed, and at the same time, their fixation is stable and at the same time easily detachable.

As described above, the slide rail 12 is inserted to the inner end of the guide accommodating space 16 along the guide surface 17 of the support member 9, and at the same time, the support member 9, the screen 8 and the operation frame 10 are assembled to each other. The internal unit 5 needs to be assembled in the screen frame 1 installed in the opening of the building, and the assembly is such that the internal unit 5 is tilted with respect to the screen frame 1 as shown in FIG. In addition, considering that there is a downward concave groove 2a for guiding the upper end of the operation frame 10 in the upper frame 2 of the screen frame 1, the internal unit 5 is in that state. It is clear that it can be formed in the screen frame 1 in a size that can be removed. In particular, the configuration in which the slide rail 12 is accommodated in the guide accommodating space 16 along the guide surface 17 of the support member 9 is very effective for facilitating the handling at the time of assembling the internal unit 5.

Further, in the above-mentioned horizontal pulling screen device, since the slide rail 12 has a barrier-free configuration in which the slide rail 12 enters and exits the side frame from the lower end portion of the side frame 3 of the screen frame 1 according to the opening and closing of the screen 8. For a stable opening / closing operation of the screen 8 by the operation stile 10, it is desired to add a configuration in which the extension of the screen is guided by some means to open / close in a substantially constant path. In such a configuration, the lower end surface of the operation stile 10 and the lower surface of the guide piece 13 of the slide rail 12 connected to the lower end of the operation stile slide with the opening and closing of the screen 8 as the lower frame of the building opening. A lower rail 20 having a height similar to that of the threshold for guiding the sliding of the guide piece 13 of the operation stile 10 and the slide rail 12 is laid on the lower rail 20 (see FIGS. 1 and 8), and below the operation stile 10. If the recessed grooves 11 and 24 for sliding on the lower rail 20 as shown in FIG. 9 are provided on the end surface and the lower surface of the guide piece 13, the screen 8 can be guided stably. If not, some guidance can be done.

However, if the guide mechanism of the operation stile 10 and the guide piece 13 as described below with reference to FIG. 9 is adopted, the operation stile 10 can be opened and closed more stably.
To specifically explain the configuration with reference to FIGS. 8 and 9 (a) to 9 (d), first, the lower rail 20 installed on the lower frame of the building opening has the operation frame 10 and FIG. The lower rail laid in the range from the storage position of the screen 8 shown in the above to the position where the expansion of the screen starts slightly is referred to as the first rail portion 21 described below, and from the portion beyond the first rail portion. The lower rail in the range until the operation frame 10 reaches the extension position of the screen 8 needs to be the second rail portion 22 described below.

Explaining the difference between the first rail portion 21 and the second rail portion 22 in relation to the operation frame and the guide piece, as shown in FIGS. 7 and 8, in the side frame 3, the guide piece 13 is used. It is in a state of moving from the state of moving along the guide surface 17 of the upper guide accommodating space 16 to the state of moving onto the rail body 23 of the lower rail 20, and since the operation stile 10 does not enter the side frame 3, the operation is performed. It is not necessary to consider the relationship between the stile and the rail body, but as shown in FIG. 1, when the operation stile 10 is in contact with the side frame 3, the operation stile is as shown in FIG. 9A. It is effective to stably hold the operation stile by engaging the hook-shaped protrusions 11a provided on both sides of the lower end of the 10 with the hook-shaped engaging protrusions 21a provided on the upper side surface of the rail body 23. ..

Further, the guide piece 13 that has moved downward along the guide surface 17 of the guide accommodating space 16 by moving the operation frame 10 from the storage position of the screen straddles the rail body 23 of the lower rail 20 and the side frame 3 At the stage of exiting from the inside, the pair of hook-shaped protrusions 24a provided on both sides of the lower surface of the guide piece 13 are engaged with the lower portion of the hook-shaped engaging protrusions 21a protruding from the upper side surface of the rail body 23. As a result, the guide piece 13 led out on the lower rail 20 is prevented from being separated from the first rail portion 21. Therefore, except for the starting end portion 25 of the first rail portion 21 in which the guide piece 13 straddles the rail main body 23 in the side frame 3, the first rail portion 21 is hooked on the upper side surface of the rail main body 23. The ridge 21a is projected.

On the other hand, the second rail portion 22 has a hook-shaped weakly engaged ridge 22a protruding from the upper portions of both side surfaces of the rail body 23, and the hook-shaped weakly engaged ridge 22a is on the lower end surface of the operating stile 10. There is not enough protrusion to securely engage the hook-shaped protrusion 11a, and the operating frame 10 can be detached from the second rail portion due to the displacement of the engaging position [see (c) in FIG. 9]. Further, in the hook-shaped weakly engaged ridge 22a, it is difficult for them to separate from the second rail portion 22 when a large number of guide pieces 13 are connected, but only the hook-shaped protrusion 24a of a small number of guide pieces is the second. If it is not engaged with the rail portion 22, it is configured so that it can be detached from the second rail portion 22 due to lateral displacement of the guide piece 13 in the traveling direction [see (d) in FIG. 9].
As a result, a detachment prevention mechanism is configured to prevent the internal unit 5 in a state where the support member 9, the screen 8 and the operation frame 10 are assembled to each other from the screen frame 1 assembled to the opening of the building.

In addition, reference numeral 27 shown in FIGS. 1 and 3 is parallel to the operation frame hung between the screen frame 1 and the operation frame 10 in order to translate the operation frame 10 with respect to the side frame 3. Shows a wire for movement.

1 Screen frame 2 Upper frame 3 Side frame 5 Internal unit 8 Screen 9 Support member 9a Contact surface 10 Operation frame 12 Slide rail 13 Guide piece 13d Guide protrusion 16 Guide accommodation space 17 Guide surface

Claims (4)

It holds a screen frame that forms the outer frame of the screen device to be installed in the opening of the building, a stretchable screen that is assembled to the screen frame and can be opened and closed by horizontal pulling with an operation rail, and the lower end of the screen. A horizontal pulling screen device composed of an internal unit equipped with a slide rail that guides the extension.
In the screen frame, along the upper frame of the upper side thereof, the screen is placed next to the operation stile between the support member arranged to face the side frame arranged at one end of the upper frame and the operation stile. The support member, which is stretched so that it can be opened and closed by pulling, is detachably engaged and fixed to the side frame, and the slide rail of the internal unit is led out from the lower part between them. Form a guide storage space to accommodate the entrance,
On the other hand, the slide rail that holds the lower end of the screen and guides the extension allows a large number of short groove-shaped guide pieces that receive the lower end of the screen to rotate with each other at the connecting portion of the adjacent guide pieces. It is formed in a long groove shape by being connected, and one end of the slide rail is connected to the lower end of the operation stile, and the other end is connected to the guide accommodating space between the side frame and the support member, above the lower end. The guide piece is formed so that it can be inserted into the guide piece, and guide protrusions are provided on both sides of the guide piece. A guide surface is formed to allow the guide surface to be led in and out of the guide accommodation space along the required route.
An internal unit in which the slide rail is inserted to the inner end of the guide accommodating space along the guide surface of the support member and the support member, the screen, and the operation frame are assembled to each other is assembled to the opening of the building. The above screen frame is formed in a size that can be removed.
A horizontal screen device characterized by that. In the horizontal pulling screen device according to claim 1,
When the side frame and the support member that bring the support member into contact with each other in the screen frame are in contact with each other and fixed to each other, the space between the side frame and the support member inserts the slide rail. It is configured to have a contact surface that is positioned to provide the required guide accommodation space for the subject.
A horizontal screen device characterized by that. In the horizontal pulling screen device according to claim 1 or 2.
The guide of the operation stile and the slide rail is on the lower frame of the building opening where the lower end surface of the operation stile and the lower surface of the guide piece of the slide rail connected to the lower end of the operation stile slide with the opening and closing of the screen. A thin strip-shaped lower rail that guides the sliding of the piece is laid, and a concave groove for sliding on the lower rail is provided on the lower end surface of the operation frame and the lower surface of the guide piece.
A horizontal screen device characterized by that. In the horizontal pulling screen device according to claim 3,
On the lower frame of the building opening, the lower rail laid in the range from the storage position of the screen to the position where the screen starts to expand is used as the first rail portion, and the first rail portion is used as the first rail portion. The lower rail in the range from the crossed part to the extension position of the screen is used as the second rail part.
In the first rail portion, the hook-shaped engaging ridge is projected from the upper part of the side surface of the thin strip-shaped rail body except for the range in which the guide piece moves along the guide surface of the guide accommodating space, and the guide accommodating. By engaging the hook-shaped protrusions provided on both sides of the lower surface of the guide piece derived from the space below the guide piece with the hook-shaped engaging ridge, the operation frame and the guide piece on the first rail portion thereof. Does not separate from the first rail portion,
On the other hand, in the second rail portion, a hook-shaped weakly engaged ridge is projected from the upper part of the side surface of the thin band-shaped rail body, and the hook-shaped weakly engaged ridge is the hook-shaped on the lower end surface of the operation frame. There is not enough protrusion to securely engage the protrusion, and the operating stile can be disengaged from the second rail portion due to the displacement of the engagement position. It is difficult for them to separate from the second rail part when a large number of them are connected, but if only a small number of hook-shaped protrusions of the guide piece are engaged with the second rail part, the second is due to lateral displacement of the guide piece in the traveling direction. It is configured to be removable from the rail part,
As a result, a detachment prevention mechanism is configured to prevent the internal unit in a state where the support member, the screen and the operation frame are assembled from each other from the above-mentioned screen frame assembled to the opening of the building.
A horizontal screen device characterized by that.

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