JP7665857B2 - Sliding door in interior window device - Google Patents

Description

The present invention relates to a sliding door made of a frame panel made of synthetic resin that constitutes an interior window device for insulation, etc.

The applicant previously proposed a sliding door for interior windows in which a panel is fitted into a frame member made of a synthetic resin molding (Patent Document 1).

Patent No. 5322189

The sliding door proposed by the applicant according to the prior art is explained with reference to Figures 1 to 3.

As shown in Figure 1, an existing window 2 fitted into a rectangular frame 1 has sliding doors 3, 3, which are formed, for example, by fitting glass panels into an aluminum sash frame, and the window is opened and closed by moving the sliding doors 3, 3 along rail members installed on the upper and lower frames 1a, 1b.

In contrast, the insulating inner window 4 is provided at hardware stores and the like as a DIY kit consisting of a synthetic resin molding and panel, and is configured so that the user can simply assemble the frame panels at home to create the sliding door 5 without needing adhesives or fastening means such as screws. The manufactured sliding doors 5, 5 are then positioned on the inside (room side) of the existing window 2, and are mounted so as to be freely opened and closed along the upper rail 6a and lower rail 6b that are laid on the upper and lower frames 1a, 1b with double-sided adhesive tape or the like.

As shown in FIG. 2, the sliding door 5 is constructed by fitting a panel 10 into the space within a frame body formed by left and right vertical frames 7, 7, upper horizontal frame 8, and lower horizontal frame 9, each of which is made of synthetic resin molding.

The vertical frame 7, upper horizontal frame 8, and lower horizontal frame 9 are made of the same molding material. Therefore, identical components are indicated with the same reference numerals. As shown in the figure, the vertical frame 7, upper horizontal frame 8, and lower horizontal frame 9 are integrally formed with an inner frame portion 12 having a retaining groove 11 into which the panel 10 is inserted from an opening facing the space within the frame, and an outer frame portion 13 that forms the groove bottom wall of the retaining groove 11. The inner frame portion 12 has guide ribs 12a that are located near the groove bottom of the retaining groove 11 and protrude in opposing directions from both groove walls.

Opposing elastic lips 14 are integrally protruding from both groove walls located on the groove opening side of the retaining groove 11, so that the panel 10 is elastically clamped and held by the elastic lips 14, 14 with its edge inserted into the retaining groove 11. That is, both side edges of the panel 10 are inserted into the retaining grooves 11 of the left and right vertical frames 7, 7 and held by the elastic lips 14, the upper edge of the panel 10 is inserted into the retaining groove 11 of the upper horizontal frame 8 and held by the elastic lips 14, and similarly, the lower edge of the panel 10 is inserted into the retaining groove 11 of the lower horizontal frame 9 and held by the elastic lips 14.

The lower horizontal frame 9 is integrally formed with an inner frame portion 16 having a retaining groove 15 into which the panel 10 is inserted through an opening facing the space within the frame, and an outer frame portion 17 that forms the bottom wall of the retaining groove 15. In this respect, the configuration is the same as that of the vertical frame 7 and upper horizontal frame 8.

The panel 10 is composed of a hollow synthetic resin plate that is integrated with a pair of sheet plates 15 facing each other with a gap between them and multiple web plates 16 interposed in parallel.

At this time, the panel 10 is inserted into the space within the frame formed by the vertical frames 7, 7 and the upper and lower horizontal frames 8 and 9 with the web plate 16 in a horizontal position.

However, conventional sliding doors have problems as shown in Figure 3.

As described above, the inner window 4 is installed on the indoor side of the existing window 2 and receives sunlight through the existing window 2. Therefore, the space between the existing window 2 and the inner window 4 becomes extremely hot. And, the outer wall portion 9A of the lower horizontal frame 9 facing the outdoor side receives direct sunlight, so the sliding door 5 heats up more than other parts.

As a result, it was discovered that, among the vertical frames 7, 7 and the upper and lower horizontal frames 8 and 9 that make up the framework of the sliding door 5, the outer wall portion 9A of the lower horizontal frame 9 in particular expands, causing the lower horizontal frame 9 to bend significantly in a bow shape toward the outside of the room. Incidentally, according to the inventor's knowledge, this type of bow shape bending is not observed in the upper horizontal frame 8, and it was confirmed that this phenomenon is unique to the lower horizontal frame 9 alone.

Then, a problem was discovered in which the underside of the sliding door 5 did not slide well against the lower rail member 6b, and did not slide properly.

The objective of the present invention is to provide a sliding door for an interior window device that solves the above problems.

The means of this invention are sliding doors in an insulating interior window device that is installed inside an existing window, and are formed by fitting a panel into the space within a frame body that is framed by a synthetic resin molding, and are configured to be slidably fitted between an upper rail and a lower rail. The frame body has a sliding member (18) at the lower end (17b) of the left and right vertical frames (7)(7) that fit and hold the left and right edges of the panel, and the sliding member (18) is brought into slidable contact with the lower rail (6b), so that the bottom surface (17) of the sliding door is raised so as not to come into contact with the lower rail (6b).

The panel (10) is made of a hollow synthetic resin plate that is integrated with a pair of spaced apart sheet plates (15)(15) and multiple web plates (16) that are interposed in parallel between them, and is fitted and held in the frame with the web plates facing up and down.

The vertical frame (7) is composed of an inner frame portion (12) with a retaining groove (11) into which the panel is inserted from an opening facing the space inside the frame, and an outer frame portion (13) with a hollow portion (13a) extending from the bottom wall of the retaining groove, which is formed as an integral part of a synthetic resin molding. The slide member (18) is composed of a plate material (19) that is placed on the lower end surfaces of the left and right vertical frames (7), and is fixed by inserting a fixing piece (20) provided on the plate material into the retaining groove (11).

The slide member (18) is fixed by inserting an insert piece (21) provided on the plate material (19) into the hollow portion (13a).

Preferably, the slide member (18) has a fixed piece (20) and an insert piece (21) on a plate material (19), and is fixed by fitting the fixed piece (20) into the retaining groove (11) and fitting the insert piece (21) into the hollow portion (13a).

The sliding door 5 of the present invention is formed by fitting a panel into the space within a frame body framed by a synthetic resin molding, and is configured to be slidably fitted between an upper rail and a lower rail. A slide member 18 is provided at the lower end 17b of the left and right vertical frames 7, 7 that fit and hold the left and right edges of the panel, and the slide member 18 is brought into slidable contact with the lower rail 6b, so that the lower surface 17 of the sliding door is raised so as not to come into contact with the lower rail 6b, which has the effect of allowing the sliding door 5 to be opened and closed smoothly.

FIG. 1 is a perspective view showing the state before an inner window is attached to an existing window according to the prior art. This shows a conventional technology sliding door that constitutes an interior window, where (A) is an oblique view showing the whole, (B) is a cross-sectional view of the upper horizontal frame, (C) is a cross-sectional view of the lower horizontal frame, and (D) is a cross-sectional view of the vertical frame. 1A and 1B show a deformed state of an inner window of the prior art, where (A) is a perspective view and (B) is a cross-sectional view taken along line A-A. FIG. 1 is a perspective view showing a sliding door according to an embodiment of the present invention. FIG. 1A is an oblique view showing the relationship between the lower rail and the underside of the sliding door according to an embodiment of the present invention; FIG. 1B is an oblique view showing the plate material that constitutes the slide member; FIG. 1C is an oblique view showing the state in which the plate material is fixed to the lower end surface of the vertical frame; and FIG. 1D is a cross-sectional view showing the state in which the fixed piece of the plate material is inserted into the retaining groove of the vertical frame.

Below, a preferred embodiment of the present invention will be described in detail with reference to Figs. 5 and 5.

(Basic structure of sliding door)
The sliding door 5 is formed by fitting a panel 10 into the space within a frame body formed into a gate shape by left and right vertical frames 7, 7 and an upper horizontal frame 8.

The vertical frames 7, 7 and upper horizontal frame 8 have the same configuration as the conventional technology shown in Figure 2, and the respective components are indicated by the same reference numerals. That is, the vertical frame 7 and upper horizontal frame 8 are integrally formed with an inner frame portion 12 having a retaining groove 11 into which the panel 10 is inserted from an opening facing the frame space, and an outer frame portion 13 that forms the groove bottom wall of the retaining groove 11, and are provided with protruding guide ribs 12a located near the groove bottom of the retaining groove 11 and protruding in opposing directions from both groove walls, and are provided with protruding elastic lips 14 located on the groove opening side and protruding in opposing directions from both groove walls.

As a result, the left and right vertical frames 7, 7 are fixed in a state where they fit over the left and right edges of the panel 10, and the upper horizontal frame 8 is fixed in a state where it fits over the upper edge of the panel 10, and the vertical frames 7, 7 and the upper horizontal frame 8 form a gate-shaped frame body that is open downwards, via the panel 10.

In this case, the panel 10 is composed of a hollow plate made of synthetic resin with multiple web plates 16 integrated in a parallel arrangement between a pair of sheet plates 15, 15, which is similar to the conventional technology described above, but whereas in the conventional technology the web plates 16 are inserted into the space within the frame in a horizontal position, in the embodiment of the present invention the web plates 16 are inserted into the space within the frame in a vertical position.

In the illustrated example, the bottom surface 17 of the sliding door 5 is formed by the lower edge 17a of the panel 10 and the lower ends 17b of the left and right vertical frames 7, 7.

The sliding door 5, like the conventional technology (see Figure 1), is located on the inside (room side) of the existing window 2 and is mounted so that it can be opened and closed freely along an upper rail 6a and a lower rail 6b that are attached to the upper and lower frames 1a, 1b with double-sided adhesive tape or the like, forming an inner window 4 on the room side of the existing window 2. As described above, when the space between the existing window 2 and the inner window 4 becomes extremely hot due to exposure to sunlight, in the conventional technology, there is a problem that the lower horizontal frame 9 bends into a bow shape due to thermal expansion, whereas in the case of the sliding door 5 in the example, no such problem occurs.

As described above, the panel 10 has a cross-sectional shape with horizontally arranged squares by arranging the web plate 16 in a vertical position, so that the structure suppresses thermal expansion in the horizontal direction.

The underside 17 of the sliding door 5, including the lower edge 17a of the panel 10 and the lower ends 17b of the left and right vertical frames 7, 7, has a slide member 18 fixed at a predetermined location on the underside that slidably contacts the lower rail 6b. As a result, when the sliding door 5 is slidably fitted between the upper rail 6a and the lower rail 6b, the slide member 18 causes the underside 17 to float so that it does not come into contact with the lower rail 6b. Therefore, when the sliding door 5 is opened or closed, the slide member 18 comes into contact with and slides on the lower rail 6b, allowing for smooth opening and closing.

(Embodiment of Slide Member)
4 and 5, the slide member 18 is composed of a plate material 19 disposed on the lower end surfaces of the left and right vertical frames 7, 7. The plate material 19 has a pair of fixing pieces 20, 20 that are fitted into the holding grooves 11 of the inner frame portion 12 of the vertical frame 7, and an insertion piece 21 that is fitted into the hollow portion 13a of the outer frame portion 13, protruding upward.

The fixing pieces 20, 20 are positioned on both sides of the panel 10 that is fitted and held in the holding groove 11, and are fitted tightly between the groove bottom wall 11a of the holding groove 11 and the guide rib 12a.

In this way, the slide member 18 is fixed to the lower end of the vertical frame 7 by fitting the fixing pieces 20, 20 into the retaining grooves 11 and the insertion piece 21 into the hollow portion 13a, and the plate material 19 is superimposed on the lower end surface of the vertical frame 7.

As shown in FIG. 5(C), the plate material 19 has a predetermined thickness t1, so that when the sliding door 5 is mounted on the lower rail 6b, the lower surface 17 of the sliding door 5 is raised so as not to come into contact with the lower rail 6b. In other words, when the sliding door 5 is opened or closed, only the plate material 19 slides in contact with the lower rail 6b.

This allows the sliding door 5 to open and close smoothly.

1 Frame 1a Upper horizontal frame 1b Lower horizontal frame 1c Vertical frame 2 Existing window 3 Sliding door 4 Inner window 5 Sliding door 6a Upper rail 6b Lower rail 7 Vertical frame 8 Upper horizontal frame 9 Lower horizontal frame 9A Outer wall portion 10 Panel 11 Retaining groove 11a Groove bottom wall 12 Inner frame portion 12a Guide rib 13 Outer frame portion 14 Elastic lip 15 Sheet plate 16 Web plate 17 Lower surface of sliding door 17a Lower edge portion of panel 17b Lower end of vertical frame 18 Slide member 19 Plate material 20 Fixing piece 21 Insertion piece

Claims (4)

This is a sliding door in an insulating inner window device that is installed inside an existing window, and is formed by fitting a panel into the space within a frame body that is framed by a synthetic resin molding, and is configured to be slidably fitted between an upper rail and a lower rail.
The panel (10) is made of a hollow synthetic resin plate having a number of web plates (16) interposed in parallel between a pair of sheet plates (15) (15) facing each other with a gap therebetween, and is fitted and held in the frame with the web plates oriented vertically .
The frame body is a sliding door in an interior window device, characterized in that a sliding member (18) is provided at the lower ends (17b) of the left and right vertical frames (7)(7) which fit and hold the left and right edges of the panel, and the sliding member (18) is brought into slidable contact with the lower rail (6b), thereby raising the underside (17) of the sliding door so that it does not come into contact with the lower rail (6b). This is a sliding door in an insulating inner window device that is installed inside an existing window, and is formed by fitting a panel into the space within a frame body that is framed by a synthetic resin molding, and is configured to be slidably fitted between an upper rail and a lower rail .
The frame body is configured such that a slide member (18) is provided at the lower ends (17b) of the left and right vertical frames (7), (7) which fit and hold the left and right edges of the panel, and the slide member (18) is brought into slidable contact with the lower rail (6b), thereby lifting the lower surface (17) of the sliding door so as not to come into contact with the lower rail (6b);
The vertical frame (7) is constructed from a synthetic resin molded material integrally formed with an inner frame portion (12) having a retaining groove (11) into which the panel is inserted from an opening facing the frame space, and an outer frame portion (13) having a hollow portion (13a) extending from a bottom wall of the retaining groove,
The sliding member (18) is composed of a plate material (19) that is placed on the lower end surfaces of the left and right vertical frames (7), and is fixed in place by inserting a fixing piece (20) provided on the plate material into the retaining groove (11). This is a sliding door in an insulating inner window device that is installed inside an existing window, and is formed by fitting a panel into the space within a frame body that is framed by a synthetic resin molding, and is configured to be slidably fitted between an upper rail and a lower rail .
The frame body is configured such that a slide member (18) is provided at the lower ends (17b) of the left and right vertical frames (7), (7) which fit and hold the left and right edges of the panel, and the slide member (18) is brought into slidable contact with the lower rail (6b), thereby lifting the lower surface (17) of the sliding door so as not to come into contact with the lower rail (6b);
The vertical frame (7) is constructed from a synthetic resin molded material integrally formed with an inner frame portion (12) having a retaining groove (11) into which the panel is inserted from an opening facing the frame space, and an outer frame portion (13) having a hollow portion (13a) extending from a bottom wall of the retaining groove,
The sliding member (18) is composed of a plate material (19) that is placed on the lower end surfaces of the left and right vertical frames (7), and is fixed in place by inserting an insertion piece (21) provided on the plate material into the hollow portion (13a). This is a sliding door in an insulating inner window device that is installed inside an existing window, and is formed by fitting a panel into the space within a frame body that is framed by a synthetic resin molding, and is configured to be slidably fitted between an upper rail and a lower rail .
The frame body is configured such that a slide member (18) is provided at the lower ends (17b) of the left and right vertical frames (7), (7) which fit and hold the left and right edges of the panel, and the slide member (18) is brought into slidable contact with the lower rail (6b), thereby lifting the lower surface (17) of the sliding door so as not to come into contact with the lower rail (6b);
The vertical frame (7) is constructed from a synthetic resin molded material integrally formed with an inner frame portion (12) having a retaining groove (11) into which the panel is inserted from an opening facing the frame space, and an outer frame portion (13) having a hollow portion (13a) extending from a bottom wall of the retaining groove,
The sliding member (18) is composed of a plate material (19) that is placed on the lower end surfaces of the left and right vertical frames (7), and the plate material is provided with a fixing piece (20) and an insertion piece (21). The sliding door in an interior window device is characterized in that the sliding member (18) is fixed by fitting the fixing piece (20) into the retaining groove (11) and fitting the insertion piece (21) into the hollow portion (13a).

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