JP2024073334A - Opening device - Google Patents

Abstract

[Problem] To prevent sagging of a shoji screen and improve its durability for an opening device placed in an opening of a building. [Solution] A shoji screen is provided with a lower frame and a shoji screen, and the lower frame of the shoji screen has a rotatable sagging prevention member, which has a support part and an abutment part, and when the shoji screen is in an open state, the abutment part abuts against the visible part of the lower frame and rotates, and when the shoji screen is in a closed state, the support part abuts against or faces the upper wall part of the lower frame to prevent sagging. [Selected drawing] Figure 5

Description

The present invention relates to an opening device that is placed in a building opening.

Conventionally, opening devices that are placed in openings in buildings are known.

JP 2015-48617 A

There is a demand for improving the durability of opening devices that are placed in openings in buildings.
The present invention aims to prevent sagging of a paper screen and improve the durability of an opening device placed at an opening of a building.

The opening device of one embodiment includes a lower frame and a screen, the lower frame of the screen having a rotatable drip-stop member, the drip-stop member having a support portion and an abutment portion, which rotates upward when the screen is open, the abutment portion abuts against the visible portion of the lower frame and rotates when the screen is closed, and the support portion abuts against or faces the upper wall portion of the lower frame to stop the drip when the screen is closed.

According to this embodiment, it is possible to prevent the sliding screen from sagging and improve the durability of the opening device placed at the opening of a building.

FIG. 2 is a longitudinal sectional view of an opening device according to an embodiment. 1 is a cross-sectional view of an embodiment of an opening device. 1A and 1B are diagrams of an embodiment of a drip stopper device and an opening device with the drip stopper device installed, where (a) is an exploded view of the drip stopper device, (b) and (c) are diagrams of the drip stopper device, and (d) is a view of the lower frame of the opening device with the drip stopper device installed. 1A and 1B are diagrams of an opening device equipped with a drip prevention device according to one embodiment, showing the area around the bottom frame during the process of closing the shoji screen. 1A and 1B are diagrams of an opening device equipped with a drip prevention device of one embodiment, in which (a) is a diagram of the area around the bottom frame during the process of closing the shoji screen, and (b) is a diagram of the area around the bottom frame when the shoji screen is in a closed state. FIG. 2 is a plan view of an opening device to which a drip prevention device according to one embodiment is attached.

An opening device according to one embodiment will be described using a vertical sliding window as an example with reference to the drawings.
The opening device of this embodiment is a vertical sliding window in which a shoji screen 20 having a panel body 25 such as double-glazed glass fitted into the inner periphery of a frame body 10 formed by an upper frame 11, a lower frame 12, and left and right vertical frames 13, 13 assembled all around it, is arranged so that it can be opened and closed freely by sliding vertically.

As shown in FIG. 1, the upper frame 11 constituting the frame body 10 has an upper frame body 111 made of a metal material such as an aluminum alloy, and a resin upper frame 112 attached to the indoor side inner circumference of the upper frame body 111.

The upper frame body 111 has an upper frame body portion 111a having a hollow portion facing the outer peripheral surface (top surface) of the upper frame 21 of the shoji screen 20, an indoor side projecting wall portion 111b that is continuous with the indoor side of the upper frame body portion 111a, and a visible wall portion 111c that extends inward from the inner peripheral surface of the indoor side projecting wall portion 111b.

The upper frame body 111 has an airtight material mounting section on the outdoor side of the upper frame body section 111a, and an airtight material s112 that abuts against the upper frame 21 of the shoji screen 20 is attached.

The resin upper frame 112 has an upper resin upper frame 113 attached to the inner periphery of the indoor side projecting wall portion 111b of the upper frame main body 111, and a lower resin upper frame 114 attached to the inner periphery of the upper resin upper frame 113, forming multiple hollow portions on the indoor side of the upper frame 11 and forming a hidden frame structure that covers the indoor side of the upper frame 21 of the shoji screen 20.
The resin top frame 112 has an airtight material mounting portion provided on the outdoor side of the upper resin top frame 113, and an airtight material s111 that abuts against the upper frame 21 of the shoji screen 20 is attached.

As shown in FIG. 1, the lower frame 12 constituting the frame body 10 has a lower frame body 121 made of a metal material such as an aluminum alloy, and a resin lower frame 122 attached to the indoor side inner circumference of the lower frame body 121.

The lower frame body 121 has a lower frame body portion 121a with a hollow portion facing the outer peripheral surface (lower surface) of the lower frame 22 of the shoji screen 20, and an indoor side concealed wall portion 121b that is continuous with the indoor side of the lower frame body portion 121a.

The lower frame main body 121 is formed so that the indoor side upper wall portion of the lower frame main body portion 121a is higher than the outdoor side upper wall portion, and a connecting portion 121e is formed between the higher indoor side upper wall portion 121c and the lower outdoor side upper wall portion 121d, connecting both upper wall portions 121c, 121d.
In the present embodiment, the lower frame body 121 has a protruding portion 121f that extends beyond the facing portion 121e toward the outdoor side of the indoor side upper wall portion 121c. The shape of the facing portion 121e is not limited in any way.

The resin lower frame 122 has a lower resin lower frame 123 attached to the inner periphery of the indoor side projecting wall portion 121b of the lower frame main body 121, and an upper resin lower frame 124 attached to the inner periphery of the lower resin lower frame 123, forming multiple hollow portions on the indoor side of the lower frame 12 and forming a hidden frame structure that covers the indoor side of the lower frame 22 of the shoji screen 20.
The resin sill 122 has an airtight material mounting portion on the outdoor side of the lower resin sill 123, and an airtight material s121 that abuts against the bottom frame 22 of the shoji screen 20 is attached.

The left and right vertical frames 13, 13 that make up the frame body 10 have the same configuration on the left and right, and as shown in Figure 2, have a vertical frame body 131 made of a metal material such as an aluminum alloy, and a resin vertical frame 132 that is attached to the indoor side inner circumference of the vertical frame body 131.

The vertical frame body 131 has a projected wall portion 131a that faces the outer peripheral surface of the vertical frame 23 of the shoji screen 20, and an airtight material attachment piece 131c that protrudes inward from the inner peripheral surface of the projected wall portion 131a, and an airtight material s132 that abuts against the vertical frame 23 of the shoji screen 20 is attached to the airtight material attachment piece 131c.

The resin vertical frame 132 has an outer peripheral resin vertical frame 133 attached to the inner peripheral side of the indoor side of the projected wall portion 131a of the vertical frame main body 131, and an inner peripheral resin vertical frame 134 attached to the inner peripheral side of the outer peripheral resin vertical frame 133, forming multiple hollow portions on the indoor side of the vertical frame 13 and forming a hidden frame structure that covers the indoor side of the vertical frame 23 of the shoji screen 20.
The resin vertical frame 132 has an airtight material mounting portion provided on the outdoor side of the outer peripheral resin vertical frame 133, and an airtight material s131 that abuts against the vertical frame 23 of the shoji screen 20 is attached.

As shown in FIG. 1, the upper frame 21 that constitutes the shoji screen 20 has an upper frame body 211 made of a metal material such as an aluminum alloy, and a resin upper frame 212 that is attached to the indoor side of the upper frame body 211 to form the panel opening, and holds the panel body 25 via a sealing material such as a glazing channel.

The lower frame 22 that constitutes the shoji screen 20, like the upper frame 21, has a lower frame body 221 made of a metal material such as an aluminum alloy, and a resin lower frame 222 that is attached to the indoor side of the lower frame body 221 to form the panel opening, as shown in Figure 1, and holds the panel body 25 via a sealing material such as a glazing channel.

Opening and closing mechanisms 51, 52 each having a link arm or the like are provided between the inner peripheral surface of the upper frame 11 and the outer peripheral surface of the upper frame 21, and between the inner peripheral surface of the lower frame 12 and the outer peripheral surface of the lower frame 22, and the frame body 10 supports the shoji screen 20 so that it can be opened and closed freely.

The left and right vertical frames 23, 23 that make up the shoji screen 20 have the same structure on the left and right, and as shown in Figure 2, have a vertical frame body 231 made of a metal material such as an aluminum alloy, and a resin vertical frame 232 that is attached to the indoor side of the vertical frame body 231 to form the panel opening, and holds the panel body 25 via a sealing material such as a glazing channel.

A warp prevention part 61 is attached between the inner surface of the left vertical frame 13 and the outer surface of the left vertical frame 23 of the shoji screen 20, and a locking device 62 is attached between the inner surface of the right vertical frame 13 and the outer surface of the right vertical frame 23 of the shoji screen 20.
In addition, an opening/closing handle 63 is rotatably attached to the indoor side of the right vertical frame 23 of the shoji screen 20, and the shoji screen 20 can be kept closed by rotating the opening/closing handle 63 to engage the locking portion 63a with a handle receiver (not shown) provided on the right vertical frame 13.

- Anti-sagging parts -
In this embodiment of the vertical sliding window, the opening/closing handle 63 provided on the right vertical frame 23 of the shoji screen 20 is rotated to release the locking portion 63a and pushed out to the outdoors, whereby the opening/closing mechanisms 51, 52 slide the left vertical frame 23 inward along the frame body 10 while rotating the right vertical frame 23 to the outdoors, thereby allowing the shoji screen 20 to be opened wide.

Here, in a vertical sliding window, the hanging side of the shoji screen 20 is supported by opening and closing mechanisms 51, 52 that utilize link arms or the like, and the door edge side of the shoji screen 20 is supported by the engagement between the opening and closing handle 63 and the handle receiver, so the door edge side of the shoji screen 20 tends to sag due to the weight of the shoji screen 20.
Therefore, in the vertical sliding window of this embodiment, a sagging prevention member is provided between the shoji screen 20 and the frame 10 to prevent the shoji screen 20 from sagging.
Below, we will explain the sagging prevention member that prevents the shoji screen 20 from sagging.

As shown in FIG. 3(d), the drip-stop member 71 of this embodiment is supported by a mounting base member 72 fixed to the underside of the bottom frame 22 of the shoji screen 20, and together with the biasing member 73 described below, constitutes the drip-stop device 7.

The sagging prevention member 71 is a block-shaped member made of a resin material, and as shown in FIG. 3(a), one side has an axial hole 71a penetrating in the left-right direction, and the other side has a support part 71b that protrudes away from the axial hole 71a, and an abutment part 71c that is adjacent to the outdoor side of the support part 71b and protrudes further away from the axial hole 71a than the support part 71b.

The mounting base member 72 that constitutes the drip stopper device 7 is made of a metal material such as steel, and has a fixing part 72a that is fixed to the underside of the bottom frame 22 of the shoji screen 20, and a pair of drip stopper member mounting parts 72b that extend downward from both the left and right sides of the fixing part 72a, and a shaft hole 72c is provided in the drip stopper member mounting part 72b to rotatably support the drip stopper member 71.

The biasing member 73 constituting the sagging prevention device 7 is formed of a torsion spring, and has a one-side abutment portion 73 a that abuts against the mounting base member 72 and a other-side abutment portion 73 b that abuts against the sagging prevention member 71 .
The biasing member 73 constituting the sagging prevention device 7 is not limited to a torsion spring.

As shown in FIG. 3(b), the drip stopper device 7 has a drip stopper member 71 disposed between a pair of drip stopper member mounting portions 72b of a mounting base member 72, and the shaft hole 72c of the mounting base member 72 and the shaft hole 71a of the drip stopper member 71 are rotatably supported by a metallic pivot shaft 74.

The drip stop device 7 has a biasing member 73 supported on a pivot 74 that supports the drip stop member 71, with one side abutment 73a abutting against the mounting base member 72 and the other side abutment 73b abutting (holding) against the drip stop member 71, so that the drip stop member 71 is maintained in a standby state with the support part 71b and the abutment part 71c rotated a predetermined angle toward the interior of the room around the pivot (rotation fulcrum) 74.

When the drip stopper device 7 is in a standby state, an external force acting toward the outdoors acts on the contact portion 71c of the drip stopper member 71, causing the drip stopper member 71 to rotate toward the outdoors against the biasing force of the biasing member 73, and the support portion 71b and contact portion 71c of the drip stopper member 71 can transition to a drip stop state (Figure 3(c)) in which they hang down almost vertically from the mounting base member 72.

The standby state of the sagging stopper member 71 may be set by the angular relationship between the abutment portion 73a on one side and the abutment portion 73b on the other side of the biasing member 73, which is made of a torsion spring. However, the rotation of the sagging stopper member 71 may be limited to a predetermined angle range by providing a stopper such as a pin that restricts the rotation of the sagging stopper member 71 on the mounting base member 72 or the sagging stopper member 71, and the configuration for maintaining the standby state of the sagging stopper member 71 is not limited.

As shown in FIG. 3(d), the drip prevention device 7 is attached to the bottom frame 22 of the shoji screen 20 by fastening the fixing portion 72a of the mounting base member 72 to the underside of the bottom frame body 221 of the bottom frame 22 by means of screws or the like.

It is preferable that the position in the forward direction at which the drip-stop device 7 is fixed on the lower frame 22 is a position at which, when the shoji screen 20 is closed, the abutment portion 71c of the drip-stop member 71 abuts against the lower frame 12 and is maintained in a vertically downward drip-stop state.
In addition, the position in the front direction at which the drip-stop device 7 is fixed to the bottom frame 22 is not particularly limited, but as shown in Figure 6, it is preferable that the drip-stop device 7 be installed at least near the edge of the bottom frame 22 of the shoji screen 20, and it is further preferable that it be installed in multiple locations.

As shown in FIG. 3(d), when the sliding screen 20 of a vertical window is open, the weight of the screen 20 causes it to lower, particularly at the leading edge, and the leading edge portion is lowered by an amount x1 compared to the bottom surface position X0 of the bottom frame 22 when the screen 20 is closed.

At this time, the drip stopper member 71 of the drip stopper device 7 fixed to the underside of the lower frame 22 is in a standby state, and the support portion 71b of the drip stopper member 71 rotated indoors is positioned above the top surface of the indoor side upper wall portion 121c of the lower frame 12, and the abutment portion 71c is positioned below the indoor side upper wall portion 121c of the lower frame 12 and maintained in a state facing the outdoor side of the visible portion 121e.

When the shoji screen 20 is closed from the open state shown in Figure 3 (d), first, as shown in Figure 4 (a), the abutment portion 71c of the sagging prevention member 71 abuts against the visible portion 121e of the lower frame main body 121 of the lower frame 12 before the shoji screen 20 is completely closed.
At this time, the support portion 71b of the sagging prevention member 71 reaches a position above the protrusion portion 121f of the indoor side upper wall portion 121c without abutting the visible portion 121e of the lower frame main body 121.

When the shoji screen 20 is further closed from the state shown in Figure 4(a), the abutment portion 71c of the drip prevention member 71 is pressed against the lower frame main body 121, and as shown in Figure 4(b), the support portion 71b rides up onto the upper surface of the indoor side upper wall portion 121c of the lower frame main body 121 while rotating toward the outdoors around the pivot axis (rotating support axis) 74 against the biasing force of the biasing member 73, pushing the shoji screen 20 upward.
At this time, since the indoor side upper wall portion 121c of the lower frame main body 121 has a protrusion 121f, the drip prevention member 71 can smoothly climb up, but the protrusion 121f does not necessarily have to be provided.

When the screen 20 is further closed from the state shown in FIG. 4(b), the drip prevention member 71 rotates further toward the outdoors around the pivot 74 as shown in FIG. 5(a), and the tip of the support part 71b is pressed against the upper surface of the indoor side upper wall part 121c of the lower frame body 121, pushing the screen 20 further upward.

When the shoji screen 20 is in a completely closed state, as shown in Figure 5 (b), the sagging prevention member 71 is positioned approximately vertically downward around the pivot axis 74, and the tip of the support portion 71b abuts against the upper surface of the indoor side upper wall portion 121c, thereby forming a sagging prevention state in which it supports the load of the shoji screen 20.
When the shoji screen 20 is closed, it is supported by the sagging prevention member 71, which prevents the door edge from sagging when it is open, and keeps the underside of the bottom frame 22 at its natural underside position X0.

When the screen is closed, the position at which the support portion 71b abuts against the indoor side upper wall portion 121c of the drip prevention member 71 is located inside the room relative to the pivot axis (pivot center) 74.
This reduces the rotational resistance when rotating the drip-stopping member 71 in the drip-stopping state in the release direction when opening the shoji screen 20, allowing for smooth opening.

--Effects of the opening device of the embodiment--
In the vertical sliding window of this embodiment, a sagging prevention member is provided between the bottom frame and the bottom frame of the screen to prevent the screen from sagging, which prevents the screen from sagging when closed and maintains it in the appropriate position, preventing deformation and improving durability.

In the vertical sliding window of this embodiment, the drip-stop member is fixed to the underside of the bottom frame of the shoji screen, so that the drip-stop member is not exposed on the upper surface of the bottom frame when the shoji screen is opened, which prevents the user's clothes, etc. from getting caught, and also prevents the design from being impaired.
It can also be retrofitted to existing windows.

-Other embodiments-
In the vertical sliding window of this embodiment, the drip stopper member 71 is attached to the mounting base member 72 and formed as part of the drip stopper device 7, but it may also be provided directly on the bottom frame of the shoji screen without going through the mounting base member 72.
Furthermore, the materials of the anti-sagging member and the mounting base member are not limited.

In the vertical sliding window of this embodiment, in the process of closing the shoji screen, the drip-stop member 71 abuts against the upper wall of the lower frame and gradually pushes up the shoji screen, but the timing at which the drip-stop member abuts against the upper wall of the lower frame is not limited, and the drip-stop member may be configured to abut against the upper wall of the lower frame when the shoji screen is closed.

In the vertical sliding window of this embodiment, the sagging prevention member 71 is in a supported state by abutting against the upper wall of the lower frame when the screen is closed, but the sagging prevention member may be maintained facing the upper wall of the lower frame without abutting against it when the screen is closed, or may be configured to abut against the upper wall when a downward external force is applied to the screen to prevent the screen from sagging.

In the vertical sliding window of this embodiment, the drip-stop member is provided between the bottom frame of the frame body and the bottom stile of the shoji screen, but depending on the cross-sectional shape of the frame material and stile material, it may be provided between the top frame and the top stile, or between the vertical frame and the vertical stile.

The opening device is not limited to a vertical sliding window, but may be any window equipped with a sliding screen, such as a casement window.
It goes without saying that the above embodiments do not limit the invention described in the claims, but are to be treated as examples.

12: Lower frame 121c: Indoor side upper wall portion 121e: Facing portion 22: Lower frame 7: Drip prevention device 71: Drip prevention member 71a: Shaft hole 71b: Support portion 71c: Contact portion 72: Mounting base member 73: Pressing member 74: Rotating shaft

Claims (1)

It has a bottom frame and a sliding screen.
The bottom frame of the shoji screen has a rotatable stopper member.
The drip-prevention member has a support part and an abutment part, and rotates upward when the screen is open. When the screen is closed, the abutment part rotates and abuts against the visible part of the lower frame, and when the screen is closed, the support part abuts or faces the upper wall part of the lower frame, forming a drip-prevention state. This is an opening device.

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