EP2921632B1

EP2921632B1 - Sash

Info

Publication number: EP2921632B1
Application number: EP14192934.9A
Authority: EP
Inventors: Tomohiko Shirahama
Original assignee: YKK AP Inc
Current assignee: YKK AP Inc
Priority date: 2014-03-18
Filing date: 2014-11-13
Publication date: 2019-03-20
Anticipated expiration: 2034-11-13
Also published as: EP2921632A1; JP6393051B2; CN104929488A; JP2015178700A

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a sash and a fitting, and in particular, to a sash and a fitting including three or more planar materials.

2. Description of the Related Art

In order to improve heat insulating properties between the indoor space and the outdoor space, fittings installed in positions dividing the indoor space from the outdoor space have conventionally been provided with a multi-layered planar material composed of a plurality of planar materials. In this type of fittings, a heat-insulating space is formed between glass plates, so that entrance and exit of heat through the planar material portion can be reduced. Recently, to further improve the heat insulating properties, fittings have been provided that use three or more sheets of glass as the planar material of a sash. Such fittings have a plurality of layers of heat-insulating spaces interposed between the indoor space and the outdoor space, and thereby have a more marked effect of reducing the entrance and exit of heat through the planar material portion (refer to German Patent Application No. 102009012202 and Japanese Laid-open Patent Publication No. 2002-061459 , for example).
The planar material of the sash needs to be provided with rail and stile members at four peripheral sides to be supported by an opening frame. The rail and stile members are formed of a metal, such as aluminum, or a resin, and are portions that are disposed such as to face both the indoor and the outdoor spaces. As a result, the rail and stile members could act as heat bridges to affect the heat insulating properties even when multi-layered glass is used as the planar material in a fitting. German Patent Application No. 102009012202 and Japanese Laid-open Patent Publication No. 2002-061459 mentioned above also disclose examples in which a glass pane located on the outdoor side covers a thickness-direction-facing surface of the rail and stile members facing the outdoor side. However, also in such fittings, heat is transferred between the glass pane and the rail and stile members, so that the glass pane and the rail and stile members result in heat bridges, and thus, the effect is not enough to improve the heat insulating properties.
The above-described problem can be solved by providing the rail and stile members on a surface located on the indoor side of the planar material. However, providing the rail and stile members on the surface of the planar material that is multi-layered glass results in a significant increase in the dimension of the sash along the thickness direction thereof. In particular, the rail and stile members located at the head end are often provided with a part, such as a handle or a locking device. This often causes the rail and stile members located at the head end to be set to have a large dimension along the thickness direction thereof, thus being a factor of the increase in the dimension of the sash along the thickness direction.
FR 74 440 E discloses a sash with all the features of the preamble of claim 1. NZ 546 256 A discloses another sash with offset panes and a profile attached to the surfaces of the panes.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide a sash and a fitting that can further improve the heat insulating properties without greatly increasing the dimensions of the sash and the fitting along the thickness direction thereof.
According to one aspect of the present invention, there is provided a sash including: a first planar material and a second planar material that have rectangular shapes having identical outside dimensions to each other, and are bonded to each other with a heat-insulating space held therebetween by interposing a spacer member between peripheral ends of the first and the second planar materials; and a third planar material that has a rectangular shape having smaller outside dimensions than those of the first planar material, and is bonded to the first planar material with a heat-insulating space held between the third planar material and the first planar material by interposing a spacer member at peripheral ends of the third planar material with an end of at least one side thereof lying on an identical plane to that of the first planar material, wherein rail and stile members are bonded to a surface of the first planar material at peripheral ends where end faces of the first planar material project more than end faces of the third planar material, and a rail or stile member is bonded to a surface of the third planar material at a peripheral end where an end face of the first planar material aligns with an end face of the third planar material.
According to this aspect of the present invention, the heat-insulating spaces are provided on the surfaces of the rail and stile members, so that entrance and exit of heat through the rail and stile members can be reduced, and thus, the heat insulating properties can be improved. In addition, rail and stile members are provided on the surface of the first planar material at the peripheral ends where the end faces of the first planar material project more than the end faces of the third planar material, so that the dimension along the thickness direction can be reduced by a thickness given by the heat-insulating space provided between the first and the third planar materials, and hence, the dimension of the sash along the thickness direction thereof can be kept from increasing.
According to another aspect of the present invention, in the above-described sash, the first planar material is bonded so that an end face located at a head end thereof projects more than that of the third planar material.
According to this aspect of the present invention, the dimension along the thickness direction can be reduced by the thickness given by the heat-insulating space provided between the first and the third planar materials at least at the head end of the sash.
According to still another aspect of the present invention, in the above-described sash, the first planar material has a rectangular shape having larger vertical and transverse dimensions than those of the third planar material, and is bonded so that both an end face located at a head end thereof and two end faces adjacent to the head end project more than those of the third planar material.
According to this aspect of the present invention, the rail and stile members are bonded to the surface of the first planar material at peripheral ends on three sides except the tail end, so that dimensions along the thickness direction at the respective peripheral ends can be reduced by the thickness given by the heat-insulating space provided between the first and the third planar materials.
According to yet another aspect of the present invention, a fitting includes the above-described sash.
According also to this aspect of the present invention, the heat-insulating spaces are provided on the surfaces of the rail and stile members, so that entrance and exit of heat through the rail and stile members can be reduced, and thus, the heat insulating properties can be improved. In addition, a rail or stile member is provided on the surface of the first planar material at least at the head end of the sash, so that the dimension along the thickness direction can be reduced by the thickness given by the heat-insulating space provided between the first and the third planar materials, and hence, the dimension of the sash along the thickness direction thereof can be kept from increasing.
The above and other objects, features, advantages and technical and industrial significance of this invention will be better understood by reading the following detailed description of presently preferred embodiments of the invention, when considered in connection with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a fitting as an embodiment of the present invention, as viewed from the indoor side;
FIG. 2 is a transverse sectional view when a sash is closed in the fitting illustrated in FIG. 1;
FIG. 3 is a transverse sectional view when the sash is slightly opened in the fitting illustrated in FIG. 1;
FIG. 4 is a transverse sectional view of a state in which the sash is moved toward the outdoor side in the closed state in the fitting illustrated in FIG. 1;
FIG. 5 is a vertical sectional view of a portion of a slidable sash in the fitting illustrated in FIG. 1;
FIG. 6 is a vertical sectional view of a state in which the slidable sash is moved toward the outdoor side in the fitting illustrated in FIG. 1;
FIG. 7 is a vertical sectional view of a portion of a non-slidable sash in the fitting illustrated in FIG. 1;
FIG. 8 is an enlarged sectional view of an operating handle used on the sash of the fitting illustrated in FIG. 1;
FIG. 9 is an enlarged plan view of a guide member used on the sash of the fitting illustrated in FIG. 1;
FIG. 10 is a sectional view of the guide member illustrated in FIG. 9;
FIG. 11 is a perspective view when the guide member illustrated in FIG. 9 is in a projecting attitude;
FIG. 12 is a perspective view when the guide member illustrated in FIG. 9 is in a retracted attitude;
FIG. 13 is a plan view when the guide member illustrated in FIG. 9 is in the retracted attitude;
FIG. 14 is a vertical sectional view of an essential part when the guide member illustrated in FIG. 9 is in the retracted attitude;
FIG. 15 is a plan view of a state in which the guide member illustrated in FIG. 9 is moved toward the outdoor side relative to the sash in the projecting attitude;
FIG. 16 is a plan view of a state in which the guide member illustrated in FIG. 9 is moved toward the indoor side relative to the sash in the projecting attitude;
FIG. 17 is a transparent perspective view of the sash of the fitting illustrated in FIG. 1, as viewed from below;
FIG. 18 is a perspective view of a pulling mechanism used in the fitting illustrated in FIG. 1, as viewed from below;
FIG. 19 is a perspective view of a state in which the pulling mechanism illustrated in FIG. 18 has operated, as viewed from below;
FIGS. 20A to 20D are plan views for sequentially illustrating the operation of the pulling mechanism illustrated in FIG. 18;
FIG. 21 is an enlarged sectional view of an essential part of an orthogonal pulling mechanism on the tail end side used in the fitting illustrated in FIG. 1;
FIG. 22 is an enlarged sectional view of the essential part of a state in which the orthogonal pulling mechanism illustrated in FIG. 21 has operated;
FIG. 23 is an enlarged view of an essential part of an orthogonal pulling mechanism on the head end side used in the fitting illustrated in FIG. 1;
FIG. 24 is an enlarged view of the essential part of a state in which the orthogonal pulling mechanism illustrated in FIG. 23 has operated;
FIG. 25 is a transverse sectional view illustrating a modification of the fitting illustrated in FIG. 1; and
FIG. 26 is a vertical sectional view of the fitting illustrated in FIG. 25.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

The following describes a preferred embodiment of a sash and a fitting according to the present invention, with reference to the accompanying drawings.
FIG. 1 illustrates the fitting in which the sash is used as an embodiment of the present invention. A illustrated in FIGS. 1 to 7, the fitting illustrated here is what is called a single sliding window that includes a fixed sash 20 fixed to an opening frame 10 and a movable sash 30 provided so as to slide right and left relative to the opening frame 10. The opening frame 10 is made by framing a top frame member 11, a bottom frame member 12, and a pair of vertical frame members 13 and 14 into four peripheral sides. The present embodiment uses the opening frame 10 in which each of the frame members 11, 12, 13, and 14 is, in particular, made of wood. The fixed sash 20 is made by bonding a fixed top rail (rail or stile member) 22, a fixed bottom rail (rail or stile member) 23, a fixed head end stile (rail or stile member) 24, and a fixed tail end stile (rail or stile member) 25 to respective peripheral ends of a fixed multi-layered planar material 21 having a rectangular outer shape. The movable sash 30 is made by bonding a movable top rail (rail or stile member) 32, a movable bottom rail (rail or stile member) 33, a movable head end stile (rail or stile member) 34, and a movable tail end stile (rail or stile member) 35 to respective peripheral ends of a movable multi-layered planar material 31 having a rectangular outer shape. As understood from FIG. 1, the fixed sash 20 is formed to have a larger right-left width than that of the movable sash 30, and is positioned at a place to the left of the opening frame 10 when viewed from the indoor side. The movable sash 30 is positioned at a place on the indoor side of the fixed sash 20 so as to open and close an inner opening 15 formed by the opening frame 10 and the fixed sash 20. In the description below, when the vertical frame members of the opening frame 10 need to be distinguished from each other, the vertical frame member located on the left side in FIG. 1 will be called the "fixed vertical frame 13", and the vertical frame member located on the right side in FIG. 1 will be called the "head end vertical frame 14".

Configuration of Fixed Sash 20

As illustrated in FIGS. 2 and 7, the fixed multi-layered planar material 21 of the fixed sash 20 is made by bonding together three fixed glass plates 211, 212, and 213. The three fixed glass plates 211, 212, and 213 have each a rectangular shape, two of them having the same outside dimensions as each other, and the remaining one being formed to have smaller vertical and transverse dimensions than those of the other two. In the description below, for convenience, the fixed glass plates having larger outside dimensions will be called the "first fixed glass plate (first planar material) 211" and the "second fixed glass plate (second planar material) 212", and the fixed glass plate having smaller outside dimensions will be called the "third fixed glass plate (third planar material) 213".
The first and the second fixed glass plates 211 and 212 are bonded to each other with a spacer member 214 interposed between peripheral ends of the respective glass plates, and have a heat-insulating space 215 formed therebetween. The third fixed glass plate 213 is bonded to a surface of the first fixed glass plate 211 with a spacer member 216 interposed between peripheral ends of the respective glass plates, and have a heat-insulating space 217 formed between the first and the third fixed glass plates 211 and 213. As understood from FIG. 2, the first fixed glass plate 211 is positioned such that an end face thereof serving as the tail end with respect to the third fixed glass plate 213 (end face on the right side in FIG. 2) lies on the same plane as that of the third fixed glass plate 213, and the other end faces serving as the head end (on the left side in FIG. 2), the top end, and the bottom end are in a projecting state from respective end faces of the third fixed glass plate 213.
Peripheral ends of the fixed multi-layered planar material 21 serving as the head end, the top end, and the bottom end are provided with cover members 218 and an end cover 219. The cover members 218 cover portions extending from a surface of the first fixed glass plate 211 to end faces of the first fixed glass plate 211 and end faces of the second fixed glass plate 212. The cover members 218 used in the present embodiment are formed of a metal, such as an aluminum alloy, and are bonded to the surface of the first fixed glass plate 211 with adhesive so as to cover the end faces of the first fixed glass plate 211 and the end faces of the second fixed glass plate 212. Respective spaces between the cover members 218 and the end faces of the first fixed glass plate 211 and the end faces of the second fixed glass plate 212 are filled with a sealing material 220. The end cover 219 covers a portion extending from a surface of the second fixed glass plate 212 to the end faces of the first fixed glass plate 211 and the end faces of the second fixed glass plate 212 with the cover members 218 interposed between the end cover 219 and the end faces. The end cover 219 is also formed of a metal, such as an aluminum alloy, and is provided at ends of the fixed multi-layered planar material 21 by being bonded to the cover members 218 with adhesive.
The fixed top rail 22, the fixed bottom rail 23, and the fixed head end stile 24 are provided on the fixed multi-layered planar material 21 so as to cover surfaces at the respective peripheral ends of the third fixed glass plate 213 and the surface of the first fixed glass plate 211 projecting from the third fixed glass plate 213. The fixed tail end stile 25 is provided so as to cover the surface of the third fixed glass plate 213. These fixed rails and stiles 22, 23, 24, and 25 are formed of wood or a resin material.
The fixed top rail 22, the fixed bottom rail 23, and the fixed head end stile 24 are formed to have approximately the same dimension as one another along the thickness direction thereof, and are bonded to the surface of the first fixed glass plate 211 in the state of partially covering the cover members 218. Each of the fixed top rail 22, the fixed bottom rail 23, and the fixed head end stile 24 is bonded such that outer peripheral end faces thereof are located in positions receding from the end faces of the first fixed glass plate 211. In other words, the first fixed glass plate 211 projects higher than the end face of each of the fixed top rail 22, the fixed bottom rail 23, and the fixed head end stile 24, and is in a state of fully covering thickness-direction-facing surfaces 22a, 23a, and 24a on one side of the fixed top rail 22, the fixed bottom rail 23, and the fixed head end stile 24.
The fixed tail end stile 25 is formed in a step-like manner so as to have a dimension along the thickness direction larger on the outer peripheral side than on the inner peripheral side, and a fixed side facing surface 25a is formed between the outer and the inner peripheral sides. The dimension along the thickness direction of the portion on the inner peripheral side of the fixed tail end stile 25 is set so that the amount of projection from the third fixed glass plate 213 is approximately equal to those of the fixed rails 22 and 23 and the other fixed stile 24. A meeting part cover member 221 is provided at an outer peripheral end of the fixed tail end stile 25. The meeting part cover member 221 covers an end face of the fixed tail end stile 25 and end faces of the three fixed glass plates 211, 212, and 213, and is formed of a metal, such as an aluminum alloy.
The fixed sash 20 configured as described above is mounted on the opening frame 10 with the fixed head end stile 24 and the fixed top and bottom rails 22 and 23 interposed therebetween in the state in which the second fixed glass plate 212 is disposed on the outdoor side. More specifically, support frame members 16 formed of a metal, such as an aluminum alloy, are provided on the thickness direction surfaces of portions of the respective frame members 11, 12, and 13, except the head end vertical frame 14, where the fixed sash 20 is to be mounted, and the fixed sash 20 is mounted onto the opening frame 10 by fixing thereto the frame members 11, 12, and 13 corresponding to the individual support frame members 16. Between the support frame members 16 and the fixed sash 20, fixed tight materials 17 provided at the respective support frame members 16 are pressed into contact with the cover members 218 of the fixed sash 20, whereby desired air tightness and water tightness are ensured.

Configuration of Movable Sash 30

As illustrated in FIGS. 2 and 5, in the same manner as in the case of the fixed multi-layered planar material 21 of the fixed sash 20, the movable multi-layered planar material 31 of the movable sash 30 is made by bonding together three movable glass plates 311, 312, and 313. The three movable glass plates 311, 312, and 313 have each a rectangular shape, two of them having the same outside dimensions as each other, and the remaining one being formed to have smaller vertical and transverse dimensions than those of the other two. In the description below, for convenience, the movable glass plates having larger outside dimensions will be called the "first movable glass plate (first planar material) 311" and the "second movable glass plate (second planar material) 312", and the movable glass plate having smaller outside dimensions will be called the "third movable glass plate (third planar material) 313".
While having a different right-left width from that of the fixed multi-layered planar material 21 of the fixed sash 20, the movable multi-layered planar material 31 has the following points in common with the fixed multi-layered planar material 21 of the fixed sash 20. That is, the first and the second movable glass plates 311 and 312 have the same outside dimensions as each other, and have a heat-insulating space 315 formed therebetween by being bonded to each other with a spacer member 314 interposed therebetween; the third movable glass plate 313 has smaller vertical and transverse dimensions than those of the first movable glass plate 311, and has a heat-insulating space 317 formed between the first movable glass plate 311 and the first movable glass plate 311 by being bonded to each other with a spacer member 316 interposed therebetween; and the first movable glass plate 311 is positioned such that an end face thereof serving as the tail end with respect to the third movable glass plate 313 (end face on the right side in FIG. 2) lies on the same plane as that of the third movable glass plate 313, and the other end faces serving as the head end (on the left side in FIG. 2), the top end, and the bottom end are in a projecting state from respective end faces of the third movable glass plate 313.
Peripheral ends of the movable multi-layered planar material 31 serving as the head end, the top end, and the bottom end are provided with cover members 318. The cover members 318 are formed of a metal, such as an aluminum alloy, and are bonded with adhesive to a surface of the first movable glass plate 311 so as to cover a portion extending from the surface of the first movable glass plate 311 to end faces of the first movable glass plate 311 and end faces of the second movable glass plate 312. Respective spaces between the cover members 318 and the end faces of the first movable glass plate 311 and the end faces of the second movable glass plate 312 are filled with a sealing material 320.
The movable top rail 32, the movable bottom rail 33, and the movable head end stile 34 are provided on the movable multi-layered planar material 31 so as to cover surfaces at respective peripheral ends of the third movable glass plate 313 and the surface of the first movable glass plate 311 projecting from the third movable glass plate 313. The movable tail end stile 35 is provided so as to cover a surface at a peripheral end of the third movable glass plate 313 and end faces of the three movable glass plates 311, 312, and 313. These movable rails and stiles 32, 33, 34, and 35 are formed of wood or a resin material in the same manner as in the case of the fixed rails and stiles 22, 23, 24, and 25.
The movable top rail 32, the movable bottom rail 33, and the movable head end stile 34 are formed to have approximately the same dimension as one another along the thickness direction thereof, and are bonded to the surface of the first movable glass plate 311 in the state of partially covering the cover members 318. Each of the movable top rail 32, the movable bottom rail 33, and the movable head end stile 34 is bonded such that outer peripheral end faces thereof are located in positions receding from the end faces of the first movable glass plate 311. In other words, the first movable glass plate 311 projects higher than the end face of each of the movable top rail 32, the movable bottom rail 33, and the movable head end stile 34, and is in a state of fully covering thickness-direction-facing surfaces 32a, 33a, and 34a on one side of the movable top rail 32, the movable bottom rail 33, and the movable head end stile 34.
In the movable tail end stile 35, the portion covering the surface at the peripheral end of the third movable glass plate 313 is made such that the amount of projection from the third movable glass plate 313 is approximately equal to those of the movable rails 32 and 33 and the other movable stile 34. In the movable tail end stile 35, the portion covering the end faces of the three movable glass plates 311, 312, and 313 is made such that the thickness-direction-facing surface thereof on the side of the second movable glass plate 312 has a stepped shape. Specifically, in the movable tail end stile 35, the thickness-direction-facing surface located on the side of the second movable glass plate 312 is made to lie, at the inner peripheral portion thereof, on approximately the same plane as a surface of the second movable glass plate 312, and to project, at the outer peripheral portion thereof, higher than the surface of the second movable glass plate 312, and a movable side facing surface 35a is formed between the inner and the outer peripheral portions.
As illustrated in FIGS. 5 and 17, the movable sash 30 is provided with a plurality of sash rollers 36 at the movable bottom rail 33. The sash rollers 36 are provided such that the lower peripheral surface of each thereof projects downward from the lower surface of the movable bottom rail 33, and when placed on a guide surface along the horizontal direction, allow the movable sash 30 to slide along the longitudinal direction of the movable bottom rail 33 by appropriately rolling. As understood from FIG. 5, in the present embodiment, the lower peripheral surface of each of the sash roller 36 lies above an end face of the first movable glass plate 311 and an end face of the second movable glass plate 312.

Configurations of Slide Members 40 and Operating Handle 50 Provided at Movable Sash 30

As illustrated in FIGS. 2, 5 and 8, slide grooves 32b, 33b, 34b, and 35b are formed on the movable top rail 32, the movable bottom rail 33, the movable head end stile 34, and the movable tail end stile 35, respectively, of the movable sash 30, and the movable tail end stile 35 is provided with an operating handle 50.
The slide grooves 32b, 33b, 34b, and 35b are empty spaces formed along the longitudinal direction of the movable rails and stiles 32, 33, 34, and 35, respectively. The slide grooves 32b, 33b, and 34b are formed on the movable top rail 32, the movable bottom rail 33, and the movable head end stile 34, respectively, so as to be open on the thickness direction surface and so as to be located at a common position along the thickness direction. In the present embodiment, the slide grooves 32b, 33b, and 34b are formed so that the cover members 318 provided on respective side faces of the first movable glass plate 311 are exposed. At the movable tail end stile 35, the slide groove 35b is formed at a place located on the outer peripheral side of the end faces of the three movable glass plates 311, 312, and 313 but on the inner peripheral side of the movable side facing surface 35a so as to be open on both upper and lower end faces. The position of the slide groove 35b along the thickness direction is common with those of the slide grooves 32b, 33b, and 34b formed on the movable rails 32 and 33 and the other movable stile 34.
The respective slide grooves 32b, 33b, 34b, and 35b are provided with the respective slide members 40. The slide members 40 are long members housed in the slide grooves 32b, 33b, 34b, and 35b so as to be slidable only along the longitudinal direction of the movable rails and stiles 32, 33, 34, and 35, respectively. slide members 40 provided on the movable top rail 32, the movable head end stile 34, and the movable tail end stile 35 are each obtained by integrally forming a base 41 having a narrow flat-plate shape with a pair of ribs 42 projecting from both ends of the base 41 in the orthogonal direction thereto. The bases 41 are housed in the slide grooves 32b, 34b, and 35b approximately parallel to the thickness direction surfaces of the movable rail 32 and the movable stiles 34 and 35. A slide member 40 used in the movable bottom rail 33 has a flat-plate shape, and is housed in the slide groove 33b approximately orthogonally to the lower surface of the movable bottom rail 33. At the movable top rail 32, the movable bottom rail 33, and the movable head end stile 34, the cover members 318 exposed to the respective slide grooves 32b, 33b, and 34b abut on the slide members 40, thus restricting the movement of the slide members 40 in the direction of moving closer to the first movable glass plate 311. While not explicitly illustrated in any of FIGS. 2, 5 and 8, the slide members 40 provided at the movable rails and stiles 32, 33, 34, and 35 are connected together between respective ends thereof by flexible power transmission members so as to slide in a mutually coupled manner. In the description below, when the slide members 40 need to be distinguished from one another, a slide member of the movable top rail 32 will be called a "top slide member 40A"; a slide member of the movable bottom rail 33 will be called a "bottom slide member 40B"; a slide member of the movable head end stile 34 will be called a "head end slide member 40C"; and a slide member of the movable tail end stile 35 will be called a "tail end slide member 40D".
As illustrated in FIG. 8, the operating handle 50 is rotatably installed in a housing depression 35c provided on the tail end face of the movable tail end stile 35, and can move from a state of being housed in the housing depression 35c of the movable tail end stile 35, as indicated by a solid line in FIG. 8, to a state of projecting from the housing depression 35c of the movable tail end stile 35, as indicated in FIG. 1 and by chain double-dashed lines in FIG. 8. The operating handle 50 is linked to the tail end slide member 40D provided at the movable tail end stile 35, and can slide all the slide members 40 via the tail end slide member 40D by being operated so as to rotate around the shaft center of a support shaft 51. The present embodiment is configured such that operating the operating handle 50 in the direction of housing it in the housing depression 35c causes the tail end slide member 40D to slide upward, which in turn causes the top slide member 40A to slide toward the head end, the head end slide member 40C to slide downward, and the bottom slide member 40B to slide toward the tail end. In contrast, operating the operating handle 50 in the direction of projecting it from the housing depression 35c causes the tail end slide member 40D to slide downward, which in turn causes the top slide member 40A to slide toward the tail end, the head end slide member 40C to slide upward, and the bottom slide member 40B to slide toward the head end.
While not explicitly illustrated in FIG. 8, an urging unit that urges the operating handle 50 toward the state of projecting from the housing depression 35c is interposed between the operating handle 50 and the movable tail end stile 35. Housing the operating handle 50 in the housing depression 35c against an urging force of the urging unit (not illustrated) can engage the operating handle 50 with a latch 52 provided in the housing depression 35c so as to place the operating handle 50 in the state of being housed in the housing depression 35c. Releasing the latch 52 causes the urging force of the urging unit (not illustrated) to project the operating handle 50 from the housing depression 35c to place the operating handle 50 in an operable state.

Configurations of Guide Member 60 and Shift Mechanism Provided at Movable Sash 30

As illustrated in FIGS. 5, 9, and 10, a guide member 60 is provided at a place located approximately at the longitudinal center of the movable top rail 32 on the movable sash 30. The guide member 60 includes a guide arm 61 and guide rollers 62 provided at both ends of the guide arm 61. The guide arm 61 is a narrow plate-like member that is long enough to be capable of projecting both ends thereof from the respective thickness-direction-facing surfaces of the movable sash 30. The guide arm 61 has a support pin 63 in a position located approximately at the longitudinal center thereof, and is rotatably supported at the tip of a support arm 64 via the support pin 63. The support arm 64 is a long sheet member provided in a space surrounded by the base 41 and the pair of ribs 42 of the top slide member 40A in the slide groove 32b formed on the movable top rail 32, and is supported, via the base end thereof, on the upper surface of the movable top rail 32 by a mounting screw 65. The support arm 64 is formed to have a smaller width than the interdistance between the pair of ribs 42, and the tip thereof can move between the pair of ribs 42 around the mounting screw 65 serving as an axial center of the tip.
The guide arm 61 is supported at the tip of the support arm 64 in a state of being exposed out of the top slide member 40A by inserting the support pin 63 through an upper cam hole 43 formed in the base 41 of the top slide member 40A. The upper cam hole 43 includes two positioning hole portions 43a and 43b along the longitudinal direction of the top slide member 40A and a connecting hole portion 43c that connects the positioning hole portions 43a and 43b to each other. The two positioning hole portions 43a and 43b and the connecting hole portion 43c are formed to have a width approximately equal to the outside diameter of the support pin 63. As illustrated in FIG. 9, the two positioning hole portions 43a and 43b are formed in positions displaced from each other in the thickness direction of the movable sash 30, and the connecting hole portion 43c is formed in a slanting manner relative to the longitudinal direction of the top slide member 40A so as to connect ends of the two positioning hole portions 43a and 43b to each other. Sliding the top slide member 40A along the longitudinal direction of the movable top rail 32 changes the position of the support pin 63 between the two positioning hole portions 43a and 43b with respect to the upper cam hole 43. This moves the guide arm 61 supported at the tip of the support arm 64 via the support pin 63 between a position nearer to the second movable glass plate 312 of the movable multi-layered planar material 31 and a position nearer to the third movable glass plate 313 of the movable multi-layered planar material 31. In the present embodiment, as illustrated in FIG. 9, the upper cam hole 43 is formed such that the positioning hole portion 43a located on the head end side of the top slide member 40A is positioned nearer to the second movable glass plate 312 of the movable multi-layered planar material 31 than the positioning hole portion 43b located on the tail end side of the top slide member 40A, and thereby, moving the top slide member 40A toward the head end moves the guide arm 61 nearer to the third movable glass plate 313 of the movable multi-layered planar material 31 with respect to the movable sash 30.
The guide rollers 62 are provided at both ends of the guide arm 61 in a state in which the circumferential surface of each of the guide rollers 62 projects from the guide arm 61, with a roller shaft 62a interposed between the guide roller 62 and the guide arm 61. Each of the guide rollers 62 can rotate around the roller shaft 62a disposed parallel to the support pin 63.

Configuration for Changing Attitude of Guide Member 60 Between Projecting Attitude and Retracted Attitude

An end of the guide arm 61 is linked to an end of a regulating arm 66. As illustrated in FIGS. 11 and 12, the regulating arm 66 is rotatably supported, via the base end thereof, at the tip of an operating arm 67. The operating arm 67 is a long member provided on the upper surface of the movable top rail 32, and is supported on the upper surface of the movable top rail 32 via two sliding guides 68 so as to be slidable only along the longitudinal direction of the movable top rail 32. The operating arm 67 is formed long enough so that the base end thereof can be projecting from the head end surface of the movable head end stile 34 by sliding the operating arm 67 toward the head end.
As illustrated in FIGS. 9 and 11, when the operating arm 67 slides toward the tail end, the regulating arm 66 functions to rotate the guide arm 61 so that the guide arm 61 becomes approximately orthogonal to the top slide member 40A and is placed in an attitude (projecting attitude) in which both ends of the guide arm 61 project from the respective thickness-direction-facing surfaces of the movable sash 30. In this state, the base end surface of the operating arm 67 approximately coincides with the head end surface of the movable head end stile 34, and both ends of the guide arm 61 can be kept projecting from the thickness-direction-facing surfaces of the movable sash 30 by locking the base end of the operating arm 67 on a locking member 69 provided at the top end of the movable head end stile 34.
When the locking state between the base end of the operating arm 67 and the locking member 69 is released and the operating arm 67 slides toward the head end as illustrated in FIGS. 12 and 13, the guide arm 61 rotates so that the joint between the guide arm 61 and the regulating arm 66 is pulled toward the operating arm 67. When the operating arm 67 has slid until the base end projects from the head end surface of the movable head end stile 34 as illustrated in FIG. 12, the guide arm 61 and the pair of guide rollers 62 are placed in an attitude (retracted attitude) in which both the guide arm 61 and the pair of guide rollers 62 are disposed within a width along the thickness direction of the movable sash 30, as illustrated in FIGS. 13 and 14.

Configuration of Pulling Mechanism 70

As illustrated in FIGS. 17 to 19, the movable bottom rail 33 of the movable sash 30 is provided with a pulling mechanism 70. The pulling mechanism 70 includes a base block 71 and a pulling member 72. The base block 71 is installed in a housing cutout 33c formed on the lower surface of the movable bottom rail 33. The housing cutout 33c is formed so as to communicate with the slide groove 33b formed on the movable bottom rail 33. The base block 71 is connected to the bottom slide member 40B, and is supported so as to be slidable along the longitudinal direction of the movable bottom rail 33 by screwing slide screws 73 into the movable bottom rail 33 through respective elongated holes 71a formed at both ends of the base block 71. The pulling member 72 is a flat plate-like member provided on the lower surface of the base block 71, and is fastened, through the base end thereof, together with the base block 71 by one of the slide screws 73 that is screwed on the tail end side of the movable bottom rail 33. The pulling member 72 is provided with a lower cam hole 74 and an abutting piece 75. As illustrated in FIGS. 20A to 20D, the lower cam hole 74 approximately linearly extends from the base end side toward the tip side of the pulling member 72, then slopes in a direction gradually departing from the bottom slide member 40B, and further, approximately linearly extends toward the tip. A cam pin 76 extends through the lower cam hole 74. The cam pin 76 is a cylindrical member provided at the base block 71, and is formed to have an outside diameter that can be slidably inserted in the lower cam hole 74. As illustrated in FIGS. 5 and 6, the abutting piece 75 is a flat plate portion that projects downward from an end of the tip of the pulling member 72 nearer to the movable glass plate 311. As understood from FIGS. 5 and 6, the abutting piece 75 is formed so that the position of the projecting lower end face thereof projects slightly below the lower peripheral surface of the sash rollers 36.
As illustrated in FIGS. 18 and 20A, when the base block 71 lies nearest to the head end, the pulling member 72 is disposed such that the cam pin 76 is positioned on the tip side of the lower cam hole 74, and the abutting piece 75 is disposed in a state of abutting on a cover member 318 of the first movable glass plate 311. From this state, as illustrated in FIGS. 19 and 20B to 20D, sliding the base block 71 toward the tail end gradually moves the cam pin 76 toward the base end of the pulling member 72 relative to the lower cam hole 74, which in turn rotates the pulling member 72 around one of the slide screws 73 serving as an axial center of the pulling member 72, and moves the tip of the pulling member 72 along the thickness direction of the movable bottom rail 33 in a direction departing from the cover member 318 of the first movable glass plate 311.

Configuration of Opening Frame 10 for Slidably Supporting Movable Sash 30

As illustrated in FIGS. 2 and 5, the opening frame 10 that slidably supports the movable sash 30 is provided with a guide rail 100 and a slide housing groove 110 on the bottom frame member 12, and provided with a guide groove 120 and a housing portion 130 on the top frame member 11.
The guide rail 100 is a long member provided on the upper surface of the bottom frame member 12 along the longitudinal direction of the bottom frame member 12, and has a bottom guide surface 101 on the upper surface thereof. The bottom guide surface 101 is a flat surface along the upper surface of the bottom frame member 12, and is formed wide enough so that the sash rollers 36 can be placed thereon. Both side portions of the bottom guide surface 101 are provided with inclined surfaces 102 that are mildly inclined upward in a gradual manner. The inclined surfaces 102 function so that the sash rollers 36 of the movable sash 30 abut on the bottom guide surface 101. A pulling abutment surface 103 for abutting against the abutting piece 75 of the pulling member 72 is formed on a portion located on the outdoor side of the guide rail 100.
The slide housing groove 110 is a depression formed at a place on the upper surface of the bottom frame member 12 on the outdoor side of the guide rail 100, and is formed along the longitudinal direction of the bottom frame member 12. The slide housing groove 110 is used for avoiding the end of the first movable glass plate 311 and the end of the second movable glass plate 312 that project below the movable bottom rail 33 from interfering with the bottom frame member 12 when the sash rollers 36 of the movable sash 30 are placed on the bottom guide surface 101 of the guide rail 100. The slide housing groove 110 is formed to have a larger width than the dimension along the thickness direction of the first and the second movable glass plates 311 and 312.
The guide groove 120 is a depression formed on the lower surface of the top frame member 11 along the longitudinal direction of the top frame member 11, and has a pair of top guide surfaces 121 along the sash width direction. The top guide surfaces 121 are formed to have a space therebetween that allows the circumferential surfaces of the guide rollers 62 provided at the respective ends of the guide arm 61 of the guide member 60 to abut on the top guide surfaces 121 when the guide arm 61 is placed in the projecting attitude.
The housing portion 130 is a depression formed in the upper surface of the guide groove 120. The housing portion 130 is formed to have a size that can accommodate the two sliding guides 68, the regulating arm 66, and the operating arm 67 together with the guide arm 61 and the guide rollers 62 only when the guide arm 61 and the guide rollers 62 of the guide member 60 are placed in the retracted attitude.
A head end housing groove 140 is formed in the thickness direction surface of the head end vertical frame 14 of the opening frame 10. The head end housing groove 140 is a depression formed along the longitudinal direction of the head end vertical frame 14, and is formed wide enough to be capable of accommodating the head end of the movable sash 30. A side face located on the outdoor side of the head end housing groove 140 is located on the same plane as that of a thickness-direction-facing surface facing the indoor side on the fixed tail end stile 25 of the fixed sash 20.

Operation When Mounting Movable Sash 30 to Opening Frame 10

To support the movable sash 30 on the opening frame 10 configured as described above, the operating arm 67 is first slid toward the head end, and the operating handle 50 is kept projecting from the housing depression 35c. In this state, the guide member 60 is kept in the retracted attitude, so that the movable top rail 32 can be accommodated in the guide groove 120 of the top frame member 11, and the guide member 60 can be accommodated in the housing portion 130. The abutting piece 75 of the pulling member 72 is placed in the state of abutting on the cover member 318 of the first movable glass plate 311, so that the first and the second movable glass plates 311 and 312 of the movable sash 30 can be easily accommodated in the slide housing groove 110 of the bottom frame member 12.
From this state, the movable top rail 32 of the movable sash 30 is first disposed in the guide groove 120 of the top frame member 11, and then, the movable sash 30 is moved up while keeping the state in which the guide member 60 in the retracted attitude is housed in the housing portion 130. Thereafter, the movable sash 30 is moved so that the movable bottom rail 33 comes close to the bottom frame member 12; the end of the first movable glass plate 311 and the end of the second movable glass plate 312 are positioned to face the slide housing groove 110, and the sash rollers 36 provided at the movable bottom rail 33 are positioned to face the bottom guide surface 101 of the guide rail 100; and the movable sash 30 is moved downward to place the sash rollers 36 on the bottom guide surface 101. Lastly, the operating arm 67 projecting from the head end only needs to be slid toward the tail end to lock the base end of the operating arm 67 on the locking member 69 of the movable head end stile 34.
In this state, the guide arm 61 of the guide member 60 provided at the movable top rail 32 is in the projecting attitude. As a result, the guide rollers 62 abut on respective guide surfaces of the guide groove 120 provided on the top frame member 11, so that the movable top rail 32 is supported on the top frame member 11 so as to be slidable along the longitudinal direction thereof. The sash rollers 36 provided at the movable bottom rail 33 abut on the bottom guide surface 101 of the guide rail 100 provided on the bottom frame member 12, so that the movable bottom rail 33 is supported on the bottom frame member 12 so as to be slidable along the longitudinal direction thereof. As a result, as illustrated in FIGS. 2 and 3, the inner opening 15 of the opening frame 10 can be opened and closed by sliding the movable sash 30 relative to the opening frame 10.
Closing the movable sash 30 relative to the opening frame 10 arranges the fixed tail end stile 25 of the fixed sash 20 and the movable tail end stile 35 of the movable sash 30 side by side along the thickness direction, as illustrated in FIG. 2. At this time, in the fitting, the fixed side facing surface 25a provided on the fixed tail end stile 25 and the movable side facing surface 35a provided on the movable tail end stile 35 are arranged facing each other in close positions with a gap held between the surfaces.
As understood from FIGS. 2 and 5, movable tight materials 150 are provided at portions on the top frame member 11, the bottom frame member 12, and the head end vertical frame 14 that face peripheral ends of the second movable glass plate 312 when the movable sash 30 is closed, and a movable tight material 150 is provided at a portion on the fixed tail end stile 25 of the fixed sash 20 that faces a peripheral end of the second movable glass plate 312 when the movable sash 30 is closed. When the operating handle 50 is projecting from the housing depression 35c, each of these movable tight materials 150 are disposed in a state of being apart from the surface of the second movable glass plate 312.

Configuration of Tail End Orthogonal Pulling Mechanism 80 Provided Between Fixed Tail End Stile 25 and Movable Tail End Stile 35

As illustrated in FIGS. 2, 3, 21 and 22, a tail end orthogonal pulling mechanism 80 provided between the fixed tail end stile 25 and the movable tail end stile 35 includes a tail end engaging pin 81 on the fixed tail end stile 25 and a pulling plate 82 on the movable tail end stile 35. As illustrated in FIG. 3, the tail end engaging pin 81 has a head 81b having a larger outside diameter at the tip of a shank 81a having a cylindrical shape, and is installed in a projecting manner from the fixed side facing surface 25a of the fixed tail end stile 25 through the shank 81a. The shank 81a of the tail end engaging pin 81 is provided with a collar member 83 so as to cover the outer circumference of the shank 81a. As illustrated in FIGS. 2 and 3, the head 81b of the tail end engaging pin 81 is provided so as to be offset from the shank 81a toward the indoor side, so that only a portion located on the indoor side of the circumferential surface of the collar member 83 projects in a radial direction. While not explicitly illustrated in either of FIGS. 2 and 3, the tail end engaging pin 81 is provided in two positions at an upper portion and a lower portion of the fixed tail end stile 25. As illustrated in FIG. 2, the shank 81a of the tail end engaging pin 81 is formed to have a larger length than that of the gap held between the fixed side facing surface 25a and the movable side facing surface 35a of the movable tail end stile 35 that faces the fixed side facing surface 25a when the movable sash 30 is closed.
As illustrated in FIGS. 2, 3, 21 and 22, the pulling plate 82 is a sheet-like member provided so as to project from a plate housing groove 35d of the movable tail end stile 35 and so as to cover the movable side facing surface 35a of the movable tail end stile 35. While not explicitly illustrated in any of FIGS. 2, 3, 21 and 22, the pulling plate 82 is provided in two positions at an upper portion and a lower portion corresponding to the tail end engaging pins 81 of the fixed tail end stile 25. The plate housing groove 35d is an opening formed so as to communicate with the slide groove 35b from each thickness-direction-facing surface in the movable tail end stile 35 facing the fixed tail end stile 25. Each of the pulling plates 82 is connected, at the base end thereof, to the tail end slide member 40D, and moves up and down relative to the movable tail end stile 35 by being coupled with the sliding of the tail end slide member 40D.
Each of the pulling plates 82 is provided with a pair of slide rollers 84 and a tail end cam hole 85. The slide rollers 84 are provided at upper and lower portions of a part of the pulling plate 82 located in the plate housing groove 35d, and can each rotate around the shaft center orthogonal to the movable side facing surface 35a. The slide rollers 84 abut, at respective circumferential surfaces thereof, on a slide plate 86 provided so as to cover the plate housing groove 35d, and thereby restrict the pulling plate 82 and the tail end slide member 40D from moving toward the outdoor side relative to the movable tail end stile 35.
As illustrated in FIGS. 21 and 22, the tail end cam hole 85 is a special-shaped hole formed at a portion of the pulling plate 82 projecting from the plate housing groove 35d, and has a tail end pin insertion hole portion 85a at an upper part and a tail end pin engaging hole portion 85b at a lower part thereof. The tail end pin insertion hole portion 85a is an opening formed to have a width that allows the head 81b of the tail end engaging pin 81 provided on the fixed tail end stile 25 to be inserted therethrough. The tail end pin insertion hole portion 85a is formed at a position that faces the tail end engaging pin 81 of the fixed tail end stile 25 when the tail end slide member 40D has moved down by projecting the operating handle 50 from the housing depression 35c. The tail end pin engaging hole portion 85b is an opening formed to have a width that allows the collar member 83 of the tail end engaging pin 81 to be inserted, and prevents the head 81b from being inserted therethrough. A tail end inclined guide surface 85c is provided at a portion located between the tail end pin insertion hole portion 85a and the tail end pin engaging hole portion 85b on an inner wall surface located on the outdoor side of the tail end cam hole 85. The tail end inclined guide surface 85c is inclined gradually toward the outdoor side as the position thereof shifts from the tail end pin engaging hole portion 85b toward the tail end pin insertion hole portion 85a. A portion on a movable facing surface of the movable tail end stile 35 facing the tail end engaging pin 81 is provided with a tail end depression 35e for accommodating the head 81b of the tail end engaging pin 81 when the movable sash 30 is closed.

Configuration of Head End Orthogonal Pulling Mechanism 90 Provided Between Head End Vertical Frame 14 and Movable Head End Stile 34

As illustrated in FIGS. 2, 3, 23, and 24, a head end orthogonal pulling mechanism 90 provided between the head end vertical frame 14 and the movable head end stile 34 includes a head end engaging pin 91 at a place in the head end housing groove 140 of the head end vertical frame 14 facing the head end slide member 40C, and has a head end cam hole 92 at the head end slide member 40C of the movable head end stile 34. In the same manner as the tail end engaging pin 81, the head end engaging pin 91 includes a collar member 93 on the outer circumference of a shank 91a having a cylindrical shape, and has a head 91b having a larger outside diameter at the tip of the shank 91a in a position offset therefrom toward the indoor side. Such head end engaging pins 91 are installed in a projecting manner from an upper portion and a lower portion of the head end housing groove 140 through-the shank 91a. As illustrated in FIG. 2, the shank 91a of the head end engaging pin 91 is formed to have a larger length than that of the gap held between the thickness direction surface of the head end housing groove 140 and the head end surface of the movable head end stile 34 when the movable sash 30 is closed.
As illustrated in FIGS. 23 and 24, the head end cam hole 92 is a special-shaped hole formed in the head end slide member 40C, and has a head end pin insertion hole portion 92a at a lower part and a head end pin engaging hole portion 92b at an upper part thereof. The head end pin insertion hole portion 92a is an opening formed to have a width that allows the head 91b of the head end engaging pin 91 provided on the head end vertical frame 14 to be inserted therethrough. The head end pin insertion hole portion 92a is formed at a position that faces the head end engaging pin 91 of the head end vertical frame 14 when the head end slide member 40C has moved up by projecting the operating handle 50 from the housing depression 35c. The head end pin insertion hole portion 92a is an opening formed to have a width that allows the collar member 93 of the head end engaging pin 91 to be inserted, and prevents the head 91b from being inserted therethrough. A head end inclined guide surface 92c is provided at a portion located between the head end pin insertion hole portion 92a and the head end pin engaging hole portion 92b on an inner wall surface located on the outdoor side of the head end cam hole 92. The head end inclined guide surface 92c is inclined gradually toward the outdoor side as the position thereof shifts from the head end pin engaging hole portion 92b toward the head end pin insertion hole portion 92a. A portion on the head end surface of the movable tail end stile 34 facing the head end engaging pin 91 is provided with a head end depression 34e for accommodating the head 91b of the head end engaging pin 91 when the movable sash 30 is closed. At portions above and below the head end cam hole 92 in the head end slide member 40C, elongated holes 45 are formed along the longitudinal direction of the head end slide member 40C, and guide screws 44 are screwed in the respective elongated holes 45. The guide screws 44 are used for preventing the head end slide member 40C from moving in the thickness direction of the movable head end stile 34.

Operation of Operating Handle 50 When Operated

As described above, while the operating handle 50 is projecting from the housing depression 35c, the movable tight materials 150 provided on the top and the bottom frame members 11 and 12 and the head end vertical frame 14 and the movable tight material 150 provided on the fixed tail end stile 25 of the fixed sash 20 are all apart from the second movable glass plate 312 of the movable sash 30, as illustrated in FIGS. 2 and 5. As a result, this fitting can reduce the operating force for sliding the movable sash 30 in order to open or close the inner opening 15 of the opening frame 10.
While the movable sash 30 is closed, housing the operating handle 50 in the housing depression 35c causes each of the tail end slide member 40D, the top slide member 40A, the head end slide member 40C, and the bottom slide member 40B to slide, and, as a result, presses the movable tight materials 150 into contact with the four peripheral sides of the second movable glass plate 312 of the movable sash 30.
Specifically, operating the operating handle 50 in the direction of housing it in the housing depression 35c causes the tail end slide member 40D to slide upward, and thereby brings the tail end orthogonal pulling mechanism 80 from the state illustrated in FIG. 21 into the state illustrated in FIG. 22; thus, the collar member 83 of the tail end engaging pin 81 abuts on the tail end inclined guide surface 85c, whereby the movable tail end stile 35 moves toward the outdoor side relative to the opening frame 10. This brings the movable tight material 150 provided on the fixed tail end stile 25 into the state of being pressed into contact with the peripheral end of the second movable glass plate 312 located on the tail end side thereof, as illustrated in FIG. 4.
In the same manner, operating the operating handle 50 in the direction of housing it in the housing depression 35c causes the head end slide member 40C to slide downward, and thereby brings the head end orthogonal pulling mechanism 90 from the state illustrated in FIG. 23 into the state illustrated in FIG. 24; thus, the collar member 93 of the head end engaging pin 91 abuts on the head end inclined guide surface 92c, whereby the movable head end stile 34 moves toward the outdoor side relative to the opening frame 10. This brings the movable tight material 150 provided on the head end vertical frame 14 into the state of being pressed into contact with the peripheral end of the second movable glass plate 312 located on the head end side thereof, as illustrated in FIG. 4.
In addition, while the operating handle 50 is housed in the housing depression 35c, the head 81b of the tail end engaging pin 81 is positioned in the tail end pin engaging hole portion 85b at the tail end orthogonal pulling mechanism 80, and the head 91b of the head end engaging pin 91 is positioned in the head end pin engaging hole portion 92b at the head end orthogonal pulling mechanism 90. As a result, sliding the movable sash 30 relative to the opening frame 10 in the opening direction thereof causes the head 81b of the tail end engaging pin 81 to engage with the pulling plate 82, and the head 91b of the head end engaging pin 91 to engage with the head end slide member 40C. This can bring the movable sash 30 into a locked state of being restricted from sliding.
Moreover, operating the operating handle 50 in the direction of housing it in the housing depression 35c causes the top slide member 40A to slide toward the head end, and thereby brings the relation between movable top rail 32 and the top frame member 11 from the state illustrated in FIG. 15 into the state illustrated in FIG. 16; thus, the guide member 60 moves toward the indoor side relative to the movable top rail 32.
In the guide member 60 of the movable top rail 32, both ends of the guide arm 61 are in the state of abutting on the top guide surfaces 121 of the guide groove 120 through the guide rollers 62, thus not being movable in the thickness direction relative to the top frame member 11. As a result, moving the guide member 60 toward the indoor side relative to the movable top rail 32 causes the movable top rail 32 to move toward the outdoor side relative to the top frame member 11. This brings the movable tight material 150 provided on the top frame member 11 into the state of being pressed into contact with the peripheral end of the second movable glass plate 312 located at the top thereof, as illustrated in FIG. 6.
Furthermore, operating the operating handle 50 in the direction of housing it in the housing depression 35c causes the bottom slide member 40B to slide toward the tail end, and thereby brings the relation between the movable bottom rail 33 and the bottom frame member 12 from the state illustrated in FIG. 20A into the state illustrated in FIG. 20D, thus, gradually moving the tip of the pulling member 72 away from the cover member 318 of the first movable glass plate 311.
Until the abutting piece 75 provided at the tip of the pulling member 72 abuts against the pulling abutment surface 103 of the guide rail 100, the tip of the pulling member 72 moves toward the indoor side around one of the slide screws 73 serving as an axial center of the pulling member 72, as illustrated from FIG. 20A to FIG. 20B. During this movement, no external force acts on the movable sash 30, so that the movable sash 30 does not move relative to the opening frame 10. However, the pulling member 72 is prevented from rotating toward the indoor side after the abutting piece 75 has abutted against the pulling abutment surface 103 of the guide rail 100. As a result, further rotation of the pulling member 72 around the slide screw 73 causes the movable bottom rail 33 to relatively move toward the outdoor side around a contact point between the pulling abutment surface 103 and the abutting piece 75 of the pulling member 72 serving as an axial center of the movable bottom rail 33. This brings the movable tight material 150 provided on the bottom frame member 12 into the state of being pressed into contact with the peripheral end of the second movable glass plate 312 located at the bottom thereof, as illustrated in FIG. 6.
As a result of the above-described operations, operating the operating handle 50 in the direction of housing it in the housing depression 35c brings all the four peripheral sides of the movable sash 30 into the state of being pressed into contact with the movable tight materials 150 provided on the opening frame 10 and the fixed sash 20. Thus, the water tightness, heat insulating properties, and sound insulating properties can be improved. As described above, the movable sash 30 is pressed into contact with the movable tight materials 150 by operating the operating handle 50 in the direction of housing it in the housing depression 35c without involving the sliding of the movable sash 30. This eliminates the risk of wear of the movable tight materials 150.
When the movable sash 30 is to be slid again, moving the operating handle 50 in the direction of projecting from the housing depression 35c moves the movable rails and stiles 32, 33, 34, and 35 of the movable sash 30 toward the indoor side, thus bringing the movable tight materials 150 into the state of being apart from the second movable glass plate 312. Moving the operating handle 50 also positions the tail end engaging pin 81 in the tail end pin insertion hole portion 85a of the tail end cam hole 85 formed in the pulling plate 82, and positions the head end engaging pin 91 in the head end pin insertion hole portion 92a of the head end cam hole 92 formed in the head end slide member 40C. This enables sliding of the movable sash 30 without applying a large operating force.
During the operation described above, the movement of the movable sash 30 toward the outdoor side relative to the opening frame 10 causes a reaction force thereof to be applied to the respective slide members 40, the guide member 60, and the sash rollers 36. However, according to the above-described fitting, the cover members 318 are provided at places located on the outdoor sides of the top, the bottom, and the head end slide members 40A, 40B, and 40C. As a result, the cover members 318 prevent the top, the bottom, and the head end slide members 40A, 40B, and 40C from moving toward the outdoor side. For the tail end slide member 40D, the slide rollers 84 are provided on the pulling plate 82 connected to the tail end slide member 40D, and abut on the slide plate 86 provided on the movable tail end stile 35. As a result, the pulling plate 82, the slide rollers 84, and the slide plate 86 cooperate to prevent the tail end slide member 40D from moving toward the outdoor side. As a result of these arrangements, the movement of the movable sash 30 toward the outdoor side does not cause a problem such as the slide members 40 being pressed into contact with the slide grooves 32b, 33b, 34b, and 35b, and the operating handle 50 can be operated without requiring a large operating force.
The guide member 60 is made such that both ends of the guide arm 61 are provided with the two respective guide rollers 62, which in turn abut on the respective top guide surfaces 121 of the guide groove 120 provided on the top frame member 11. This allows the guide member 60 to resist the above-mentioned reaction force without causing a problem in the sliding of the movable sash 30. Furthermore, the sash rollers 36 are directly supported by the movable bottom rail 33, and the guide rail 100 having the inclined surfaces 102 is used. As a result, the sash rollers 36 and the movable sash 30 move toward the outdoor side while slightly moving upward along one of the inclined surfaces 102, and hence need not resist the above-mentioned reaction force. This allows the movable sash 30 to smoothly slide without causing a problem of applying a large reaction force to axles of the sash rollers 36.
In addition, in the fitting described above, the fixed multi-layered planar material 21 having the two layers of heat-insulating spaces 215 and 217 is used in the fixed sash 20, and the movable multi-layered planar material 31 having the two layers of heat-insulating spaces 315 and 317 is used in the movable sash 30. Moreover, as illustrated in FIGS. 4 and 6, the first glass plates 211 and 311 cover the thickness-direction-facing surfaces located on the outdoor sides of the head end stiles 24 and 34, the top rails 22 and 32, and the bottom rails 23 and 24 of the sashes 20 and 30, respectively. As a result, the heat-insulating spaces 215 and 315 lie between the second glass plates 212 and 312, respectively, and the thickness-direction-facing surfaces. This prevents the head end stiles 24 and 34, the top rails 22 and 32, and the bottom rails 23 and 24 from acting as heat bridges between the outdoor space and the indoor space, which is very advantageous in terms of the heat insulating properties. Furthermore, the third glass plates 213 and 313 located on the indoor side are formed to have smaller vertical and transverse dimensions than those of the first glass plates 211 and 311. This can prevent a problem of increase in the dimension in the thickness direction when the first glass plates 211 and 311 and the second glass plates 212 and 312 cover the thickness-direction-facing surfaces on the outdoor side. While the meeting part cover member 221 is provided at the outer peripheral end of the fixed tail end stile 25 so as to cover the end face of the fixed tail end stile 25 and the end faces of the three fixed glass plates 211, 212, and 213, the meeting part cover member 221 is unlikely to act as a heat bridge to impair the heat insulating properties because the movable tail end stile 35 of the movable sash 30 is disposed on the indoor side. While a stile having a portion covering the end faces of the three movable glass plates 311, 312, and 313 is used as the movable tail end stile 35, the movable tail end stile 35 is unlikely to act as a heat bridge to impair the heat insulating properties because the fixed tail end stile 25 of the fixed sash 20 is disposed on the outdoor side.

Modification

While the embodiment described above illustrates the single sliding window as the fitting, the present invention is not limited to this, but can configure the fitting to serve as a hinged window, as represented, for example, in a modification illustrated in FIGS. 25 and 26. Specifically, in the modification, the hinged window includes a sash 420 similar to the fixed sash 20 used in the embodiment, by supporting a tail end stile 425 on a vertical frame member 414 of an opening frame 410 with a hinge 450, and by providing a handle 451 for opening and closing the window on the thickness-direction-facing surface of a head end stile 424 facing the indoor side. A multi-layered planar material 421 includes a first glass plate 4211, a second glass plate 4212, and a third glass plate 4213. The third glass plate 4213 is formed to have smaller vertical and transverse dimensions than those of the first and the second glass plates 4211 and 4212.
The first and the second glass plates 4211 and 4212 are bonded to each other with a spacer member 4214 interposed between peripheral ends of the respective glass plates, and have a heat-insulating space 4215 formed therebetween. The third glass plate 4213 is bonded to a surface of the first glass plate 4211 with a spacer member 4216 interposed between peripheral ends of the respective glass plates, and have a heat-insulating space 4217 formed between the first and the third glass plates 4211 and 4213. The first glass plate 4211 is positioned such that an end face thereof serving as the tail end with respect to the third glass plate 4213 (end face on the right side in FIG. 25) lies on the same plane as that of the third glass plate 4213, and the other end faces serving as the head end (on the left side in FIG. 25), the top end, and the bottom end are in a projecting state from respective end faces of the third glass plate 4213.
A top rail 422, a bottom rail 423, and the head end stile 424 are provided on the multi-layered planar material 421 so as to cover surfaces at respective peripheral ends of the third glass plate 4213 and the surface of the first glass plate 4211 projecting from the third glass plate 4213. The tail end stile 425 is provided so as to cover the surface of the third glass plate 4213. These rails and stiles 422, 423, 424, and 425 are formed of wood or a resin material. A meeting part cover member 4221 is provided at an outer peripheral end of the tail end stile 425. The meeting part cover member 4221 covers an end face of the tail end stile 425 and end faces of the three glass plates 4211, 4212, and 4213, and is formed of a metal, such as an aluminum alloy.
According to this fitting, the first glass plate 4211 covers the thickness-direction-facing surfaces located on the respective outdoor sides of the head end stile 424 and the top and the bottom rails 422 and 423. As a result, the heat-insulating space 4215 lies between the second glass plate 4212 and the thickness-direction-facing surfaces. This prevents the head end stile 424 and the top and the bottom rails 422 and 423 from acting as heat bridges between the outdoor space and the indoor space, which is very advantageous in terms of the heat insulating properties. Furthermore, the third glass plate 4213 located on the indoor side is formed to have smaller vertical and transverse dimensions than those of the first glass plate 4211. This allows the handle 451 to be mounted without causing a problem of increase in the dimension in the thickness direction when the first and the second glass plates 4211 and 4212 cover the thickness-direction-facing surfaces on the outdoor side. While the meeting part cover member 4221 is provided at the outer peripheral end of the tail end stile 425 so as to cover the end face of the tail end stile 425 and the end faces of the three glass plates, the meeting part cover member 4221 is unlikely to act as a heat bridge because a portion thereof located on the indoor side abuts on a thickness-direction-facing surface of the vertical frame member 414 facing the outdoor side and thus is not directly exposed to the indoor side.
At end faces of the multi-layered planar material located at places other than the tail end thereof, that is, at the end face located at the head end and the two end faces adjacent to the head end, the glass plates are bonded to each other so that the first glass plate projects more than the third glass plate. However, in the present invention, the first glass plate only needs to project more than the third glass plate at only one end face.
According to the embodiment of the present invention, the heat-insulating spaces are provided on the surfaces of the rail and stile members, so that entrance and exit of heat through the rail and stile members can be reduced, and thus, the heat insulating properties can be improved. In addition, a rail or stile member is provided on a surface of the first planar material at least at the head end of the sash, so that the dimension along the thickness direction can be reduced by a thickness given by the heat-insulating space provided between the first and the third planar materials, and hence, the dimension of the sash along the thickness direction thereof can be kept from increasing. Moreover, the end faces of the tail ends of the first, the second, and the third planar materials are located on the same plane, so that the sash can be easily assembled with respect to the end faces in the manufacturing process.
Although the invention has been described with respect to specific embodiments for a complete and clear disclosure, the appended claims are not to be thus limited but are to be construed as embodying all modifications and alternative constructions that may occur to one skilled in the art that fairly fall within the scope of the appended claims.

Claims

A sash comprising:
a first planar material (211, 311; 4211) and a second planar material (212, 312; 4212) that have rectangular shapes having identical outside dimensions to each other, and are bonded to each other with a heat-insulating space (215, 315; 4215) held therebetween by interposing a spacer member (214, 314; 4214) between peripheral ends of the first and the second planar materials; and

a third planar material (213, 313; 4213) that has a rectangular shape having smaller outside dimensions than those of the first planar material (211, 311; 4211), and is bonded to the first planar material (211, 311; 4211) with a heat-insulating space (217, 317; 4217) held between the third planar material (213, 313; 4213) and the first planar material (211, 311; 4211) by interposing a spacer member (216, 316; 4216) at peripheral ends of the third planar material (213, 313; 4213), characterized in that

an end of at least one side of the third planar material (213, 313, 4213) lying on an identical plane to that of the first planar material (211, 311, 4211), and that rail and stile members (22, 23, 24, 32, 33, 34, 422, 423, 424) are bonded to a surface of the first planar material (211, 311; 4211) at peripheral ends where end faces of the first planar material (211, 311; 4211) project more than end faces of the third planar material (213, 313; 4213), and that a rail or stile member (25, 35, 425) is bonded to a surface of the third planar material (213, 313; 4213) at said peripheral end where the end face of the first planar material (211, 311; 4211) aligns with an end face of the third planar material (213, 313; 4213).
The sash according to claim 1, wherein the first planar material (211, 311; 4211) is bonded so that an end face located at a head end thereof projects more than that of the third planar material (213, 313; 4213).
The sash according to claim 1, wherein the first planar material (211, 311; 4211) has a rectangular shape having larger vertical and transverse dimensions than those of the third planar material (213, 313; 4213), and is bonded so that both an end face located at a head end thereof and two end faces adjacent to the head end project more than those of the third planar material (213, 313; 4213).
A fitting comprising the sash according to any one of claims 1 to 3.