Fitting

Abstract

To provide a fitting capable of more surely preventing a gap from generating between a frame body and a sash when being heated.SOLUTION: A fitting includes: a frame body for forming an opening by frame materials being framed; and a sash which has a stile body where stile materials are assembled in stile and which can close the opening. At one member out of the frame material and the stile material opposed to each other and paired up in the in-plane direction of the sash, an engagement part is provided at a portion opposing to each other in the in-plane direction, and the other member out of the frame material and the stile material being paired up includes a small linear expansion part whose linear expansion coefficient is smaller than the one member. A part to be engaged which is engaged with the engagement part when the one member expands linearly is mounted on the small linear expansion part, and is provided at the portion opposing to each other in the in-plane direction.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a fitting having a frame body that forms an opening and a screen that can close the opening. [Background technology]

[0002] Conventionally, fittings that support a shoji screen relative to a frame (frame body) so that it can be opened and closed freely have been known (see, for example, Patent Document 1). In this fitting, a locking member is provided on the outer peripheral surface of an aluminum vertical frame on the shoji screen door end side, and a receiver is provided on the inner peripheral surface of the aluminum vertical frame, and when the vertical frame expands due to heat, the locked part of the locking member that protrudes toward the vertical frame is locked to the receiving part that protrudes toward the inner peripheral side of the receiver. Therefore, in the event of a fire, the heat of the fire causes the vertical frame to expand and the locking member is locked to the receiver, preventing the door end of the shoji screen from moving away from the frame to the outside of the room, or the shoji screen from warping, thereby preventing a gap from occurring between the shoji screen and the frame, and preventing flames from escaping. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-9495 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned building fixtures, the vertical frame, which is provided with a locking member that is said to lock when the vertical frame expands due to heat, and the vertical frame, which is provided with the receiver, are both made of aluminum, and the locking member and the receiver are located close to each other.Therefore, when the vertical frame expands due to heat such as a flame, the vertical frame is similarly heated and expands, so there is a problem that even if the vertical frame expands, there is a risk that the locking member will not lock into the receiver.

[0005] The present invention has been made in consideration of such problems, and its purpose is to provide a fitting that can more reliably prevent gaps from occurring between the frame and the shoji screen when heated. [Means for solving the problem]

[0006] The main invention for achieving this objective is a fitting comprising a frame body in which a frame material is framed to form an opening, and a screen having a frame body made of frame materials assembled into a frame, capable of closing the opening, wherein one of the frame material and the frame material which form a pair opposite each other in the in-plane direction of the screen is provided with an engaging portion at a position facing each other in the in-plane direction, and the other of the frame material and the frame material which form the pair has a small linear expansion portion which has a linear expansion coefficient smaller than that of the one of the members, and an engaged portion which engages with the engaging portion when the one of the members linearly expands is attached to the small linear expansion portion and is provided at a position facing each other in the in-plane direction. Other features of the present invention will become apparent from the following detailed description of the present invention and the accompanying drawings. Effect of the Invention

[0007] According to the present invention, it is possible to provide a fitting that can more reliably prevent gaps from occurring between the frame and the shoji screen when heated. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is an interior view of the fitting for a sliding window according to the present embodiment. [Diagram 2] FIG. 2 is a cross-sectional view of the left side portion of the fitting according to the present embodiment. [Diagram 3] FIG. 3(a) is a view of the engaging member as seen from the inside of the room, and FIG. 3(b) is a view of the engaging member as seen from the shoji side. [Figure 4] FIG. 4(a) is a view of the engaged member seen from the left vertical frame side, and FIG. 4(b) is a view of the engaged member seen from above. [Diagram 5]13 is a diagram showing a state in which an engaging member and an engaged member are attached. FIG. [Figure 6] FIG. 6(a) is a diagram showing the arrangement of the engaging member and the engaged member in a normal state, and FIG. 6(b) is a diagram showing the arrangement of the engaging member and the engaged member when thermal elongation occurs. [Figure 7] This is an interior view showing a fixture for a vertical sliding window provided with an engaging member and an engaged member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, a fitting according to one embodiment of the present invention will be described with reference to the drawings. As an example of a fitting according to this embodiment, a fitting 1 for a sliding window as shown in Fig. 1 will be described. The fitting 1 has a frame 2 that is attached to the building framework to form an opening 2a, and an outer screen 3 and an inner screen 4 that are slidably supported by the frame 2 and can close the opening 2a.

[0010] In the following explanation, when the fitting 1 installed in the building is viewed from inside the room, the up and down direction is referred to as the up and down direction, the left and right direction is referred to as the left and right direction, and the depth direction is referred to as the prospective direction. In addition, even when each part of the fitting 1 or each component that composes the fitting 1 is in a separate state, the directions are specified and explained in terms of the up and down direction, left and right direction, and prospective direction when the fitting 1 is installed.

[0011] As shown in Figure 1, the frame body 2 is made up of four frame members, the upper frame 20, the lower frame 21, the left vertical frame 22, and the right vertical frame 23, which are arranged in a rectangular shape to form the opening 2a. The outer screen 3 and the inner screen 4 each have a rectangular glass 5 and a rectangular frame body 30, 40 that houses the peripheral end of the glass 5. The frame bodies 30, 40 of the outer screen 3 and the inner screen 4 are each formed by assembling four frame members, the upper frame 31, 41, the lower frame 32, 42, the door end frame 33, 43, and the joint frame 34, 44, in a rectangular shape.

[0012] Each of the frame members 20, 21, 22, and 23 is a composite member in which a metal frame portion made of an aluminum extrusion and a resin frame portion made of a synthetic resin extrusion are engaged with each other. Each of the frame members 31, 32, 33, 34, 41, 42, 43, and 44 has a frame member main body portion made of a synthetic resin extrusion with a hollow portion passing through in the longitudinal direction, and a steel reinforcing member provided along the longitudinal direction within the hollow portion.

[0013] When the opening 2a formed by the frame 2 of the door fixture 1 is closed by the outer screen 3 and the inner screen 4, the upper frame 20 and each upper stile 31, 41, the lower frame 21 and each lower stile 32, 42, the left vertical frame 22 and the end frame 33 of the outer screen 3, and the right vertical frame 23 and the end frame 43 of the inner screen 4 each form a pair and face each other in the in-plane direction of the screens 3, 4 (hereinafter simply referred to as the in-plane direction).

[0014] In the fitting 1, an engaging member 6 forming an engaging portion that engages when heated by fire or the like and an engaged member 7 forming an engaged portion are provided on the upper side of the fitting 1 between the left vertical frame 22 and the end frame 33 of the outer door 3, and between the right vertical frame 23 and the end frame 43 of the inner door 4. The engaging members 6 and engaged members 7 are provided between the left vertical frame 22 and the end frame 33 of the outer door 3, and between the right vertical frame 23 and the end frame 43 of the inner door 4, in the same configuration, but are provided in a reversed left-right state. Here, the engaging member 6 and engaged member 7 provided between the left vertical frame 22 and the end frame 33 of the outer door 3 will be explained as an example.

[0015] As shown in FIG. 2, the left vertical frame 22 has a metal frame portion 221 made of aluminum and a resin frame portion 222 made of synthetic resin. The metal frame portion 221 has a projection plate portion 221a along the projection direction, an exterior appearance plate portion 221b provided at the outside end of the projection plate portion 221a along the left-right direction, an interior appearance plate portion 221c provided at the inside end of the projection plate portion 221a along the left-right direction, and a framework fixing plate portion 221d that protrudes from a position on the inside of the room from the center in the projection direction of the projection plate portion 221a to the outer periphery side of the frame body 2 (hereinafter simply referred to as the outer periphery side) and is fixed to the framework. The framework fixing plate portion 221d is fixed in a state facing the exterior appearance surface of the framework. For this reason, the framework 2 is provided so that the portion provided on the outside of the framework fixing plate portion 221d protrudes from the building.

[0016] The projection plate portion 221a is provided with a metal inner periphery protruding portion 221e which protrudes toward the inner periphery (hereinafter simply referred to as the inner periphery) of the frame body 2 from a position outside the room from the center in the projection direction, and a metal protrusion 221f which is provided between the body fixing plate portion 221d and the metal inner periphery protruding portion 221e in the projection plate portion 221a and protrudes toward the inner periphery.

[0017] The metal inner peripheral protrusion 221e is provided on the outer periphery of the door end frame 33 of the outer periphery of the outer periphery of the door when the outer periphery of the door is closed, and is inserted into the groove 331c described later. The metal inner peripheral protrusion 221e has a tip end projection wall 221g that extends to the inside of the room and forms a projection surface at the tip end of the metal inner peripheral protrusion 221e. The metal tip end locking part 221h that locks with the resin tip locking part 222e of the resin frame part 222 described later is provided at the end of the tip end projection wall 221g on the inside of the room.

[0018] The portion of the metal inner peripheral protrusion 221e on the side of the projection plate portion 221a, together with the inner peripheral portion of the interior projection plate portion 221c and the metal protrusion 221f, constitutes a resin frame engaging portion for engaging and holding the resin frame portion 222.

[0019] A steel engaging member 6 is provided on the inner periphery side of the tip end wall portion 221g of the metal inner periphery protruding portion 221e, that is, on the side facing the door end frame 33 in the in-plane direction. The engaging member 6 will be described in detail later.

[0020] The resin frame part 222 has a resin protrusion 222a that is engaged with the metal protrusion 221f, an outdoor abutment plate part 222b that faces and abuts against the inner surface of the projection plate part 221a on the outdoor side of the resin protrusion 222a, and an indoor abutment plate part 222c that faces and abuts against the inner surface of the projection plate part 221a on the indoor side of the resin protrusion 222a. The resin frame part 222 is attached to the metal frame part 221 by engaging the metal protrusion 221f and the resin protrusion 222a with each other, and by engaging the outdoor side end of the outdoor side abutment plate part 222b with the metal inner peripheral protrusion part 221e and the indoor side end of the indoor side abutment plate part 222c with the interior projection plate part 221c.

[0021] The exterior abutment plate portion 222b is provided with a resin inner peripheral protrusion portion 222d that protrudes inward and is inserted into the groove portion 331c of the door end frame 33 of the exterior sash 3 together with the metal inner peripheral protrusion portion 221e. The resin inner peripheral protrusion portion 222d is provided with a resin tip locking portion 222e at its tip protruding inward, which locks with the metal tip locking portion 221h.

[0022] The frame body 331 in the door frame 33 of the outer sash 3 has a hollow 331a that penetrates in the longitudinal direction, i.e., the vertical direction, and has a generally rectangular shape, and on the outer periphery of the hollow 331a, a groove 331c is provided that is recessed inward and opens on the left vertical frame 22 side facing in the in-plane direction through an outer periphery wall 331b that forms the outer periphery wall of the hollow 331a. On the inner periphery of the hollow 331a, the end of the glass 5 is accommodated in a glass accommodation section 331e formed by an inner periphery extension section 331d located on the indoor side and extended to the inner periphery, and a push edge 333 that fits to the outdoor side.

[0023] A steel door end reinforcement member 332 is provided in the hollow portion 331a of the frame body 331 along the longitudinal direction, over almost the entire length of the frame body 331. The door end reinforcement member 332 has two opposing plate portions 332a that face each other with a gap in the in-plane direction, and the outdoor-side ends of the opposing plate portions 332a are connected by a connecting plate portion 332b that faces along the viewing direction, and the horizontal cross section is U-shaped.

[0024] The facing plate 332a located on the outer periphery of the door end reinforcement 332 has a steel engaged member 7 protruding from an opening in the outer periphery wall 331b toward the groove 331c on the outer periphery, i.e., on the side facing the left vertical frame 22 in the in-plane direction. The engaged member 7 will be described in detail later.

[0025] The engagement member 6 attached to the leading end wall portion 221g of the left vertical frame 22 is formed, for example, from a steel flat plate material as shown in Fig. 3, and has a frame fixing plate portion 6a that is screwed in by a countersunk screw 8 while facing the leading end wall portion 221g, and an engagement main body portion 6b that is bent up so as to be almost perpendicular to the frame fixing plate portion 6a. The frame fixing plate portion 6a is almost rectangular, and is provided with countersunk holes 6c at the upper and lower end sides, through which the countersunk screws 8 are inserted.

[0026] The engaging body 6b is provided between the two countersunk kneading holes 6c. The engaging body 6b has an engaging extension 6d extending toward the opposing door end frame 33 in the in-plane direction, and an upward extension 6e extending upward from the tip of the engaging extension 6d.

[0027] The engaged member 7 attached to the facing plate portion 332a on the outer periphery of the door end reinforcement member 332 is made of, for example, a flat steel plate material as shown in Fig. 4, and has a stile fixing plate portion 7a that is screwed in with screws 9 while facing the facing plate portion 332a, and an engaged main body portion 7b that is bent up so as to be almost perpendicular to the stile fixing plate portion 7a. The stile fixing plate portion 7a is almost rectangular, and has insertion holes 7c at the upper and lower end sides through which the screws 9 are inserted.

[0028] The engaged main body portion 7b is provided between the two insertion holes 7c. The engaged main body portion 7b has an engaged extension portion 7d extending toward the opposing left vertical frame 22 side in the in-plane direction, an inner extension portion 7e whose tip extends toward the indoor side, and an opposing extension portion 7f whose tip extends toward the inner periphery side and faces the engaged extension portion 7d with a gap in the projection direction.

[0029] When the fitting 1 is installed and the outer screen 3 is closed, the upper end of the upward extension portion 6e of the engaging member 6 is located lower than the lower end of the engaged main body portion 7b of the engaged member 7, as shown in Figure 5, and the lower end of the engaged main body portion 7b and the upper end of the upward extension portion 6e are each attached with a gap between them.

[0030] The upward extension portion 6e of the engaging member 6 is positioned below the engaged main body portion 7b, approximately in the center between the engaged extension portion 7d and the opposing extension portion 7f, and is positioned so that the outer peripheral edge 6f of the upward extension portion 6e is located more inward than the inner extension portion 7e of the engaged main body portion 7b.

[0031] 5, the door end reinforcement 332 to which the engaged member 7 is attached is connected by a steel connecting metal fitting 30a to a lower reinforcement 32b to which a door roller 32a provided on the lower frame 32 is fixed. The door roller 32a is supported on a lower rail 21a provided on a lower frame 21 which is joined to the left vertical frame 22 to which the engaging member 6 is attached and forms the frame body 2.

[0032] For this reason, the vertical position of the outer screen 3 relative to the frame body 2 is determined by the lower rail 21a, and the relative vertical displacement between the door end frame 33 and the left vertical frame 22 when heated and thermally expands is based on the point of contact between the door roller 32a and the lower rail 21a.

[0033] As shown in Fig. 6(a), the fitting 1 has an engaging member 6 fixed to the leading edge wall portion 221g of the aluminum left vertical frame 22, and an engaged member 7 fixed to a steel door end reinforcement material 332 that has a smaller linear expansion coefficient than aluminum and is included in the door end frame 33 of the outer door screen 3. For this reason, when the fitting 1 is heated by a fire or the like, the engaging member 6 fixed to the aluminum left vertical frame 22, which has a larger linear expansion coefficient, moves due to thermal expansion farther away from the contact point between the reference door roller 32a and the lower rail 21a than the engaged member 7 fixed to the steel door end reinforcement material 332.

[0034] As a result, the engaging member 6, which was located below the engaged member 7, moves upward as shown in FIG. 6(b), and the upward extension 6e of the engaging member 6 is inserted between the engaged extension 7d and the opposing extension 7f of the engaged member 7. That is, during normal use of the fitting 1, the upper end of the upward extension 6e of the engaging member 6 is disposed below and away from the lower end of the engaged main body 7b of the engaged member 7, and when heated by fire or the like, the engaging member 6 and the engaged member 7 are disposed at a position such that the upper end of the upward extension 6e of the engaging member 6 is above the lower end of the engaged main body 7b of the engaged member 7 due to thermal expansion. At this time, the engaged member 7 is disposed farther away from the end of the contact point between the reference door roller 32a and the lower rail 21a than the engaging member 6 in the longitudinal direction of the left vertical frame 22 and the door end frame 33.

[0035] The engaging member 6 and the engaged member 7 are provided at a position farther away from the reference point between the roller 32a and the lower rail 21a, i.e., at the upper end in the longitudinal direction of the left vertical frame 22 and the door end frame 33, so that the difference in the amount of relative movement between the engaging member 6 and the engaged member 7 due to thermal expansion becomes larger.

[0036] According to the fitting 1 of this embodiment, an engaging member 6 forming an engaging portion is provided on the left vertical frame 22 which is opposed to each other in the in-plane direction of the shoji screens 3, 4, and an engaged member 7 is provided on the door end frame 33 of the outer shoji screen 3 as an engaged portion which engages with the engaging member 6 when the left vertical frame 22 linearly expands. Therefore, when the fitting 1 is heated by a flame or the like, the engaging member 6 and the engaged member 7 engage with each other, making it possible to prevent the opposing left vertical frame 22 and door end frame 33 from separating.

[0037] In this case, the engaged member 7 is provided on the door end reinforcement member 332, which forms a small linear expansion portion in the door end frame 33 with a smaller linear expansion coefficient than the aluminum left vertical frame 22 on which the engaging member 6 is provided, so that the engaging member 6 provided on the left vertical frame 22 moves by a larger amount due to thermal expansion than the engaged member 7 provided on the door end reinforcement member 332.

[0038] For this reason, under normal circumstances, the engaging member 6 and the engaged member 7 can be positioned apart so as not to interfere with the opening and closing of the outer door screen 3, and when heated by a flame or the like, the engaging member 6 and the engaged member 7 can be engaged by utilizing the difference in the amount of elongation between the left vertical frame 22 and the door end reinforcement material 332. In other words, under normal circumstances, smooth opening and closing of the outer door screen 3 can be ensured, but when heated by a flame or the like, the engaging member 6 and the engaged member 7 can be engaged more reliably.

[0039] Furthermore, when heated, the engaging member 6 and the engaged member 7 engage with each other, making it difficult for the left vertical frame 22 and the door end frame 33 to separate, making it possible to more reliably prevent gaps from occurring between the frame body 2 and the outer shoji 3.

[0040] Furthermore, the left vertical frame 22 on which the engaging member 6 is provided and the door end frame 33 on which the engaged member 7 is provided are restricted in their relative longitudinal movement at the lower side along the up-down direction, so when heated by a flame or the like, thermal expansion occurs toward the unrestricted upper side. And because the engaging member 6 and the engaged member 7 are provided on the upper side of the fitting 1, opposite the restricted lower side, the difference in the amount of expansion when heated becomes even greater.

[0041] This increases the difference in the amount of movement due to heat between the engaging member 6 provided on the left vertical frame 22 and the engaged member 7 provided on the door end reinforcement 332 of the door end frame 33, making it possible to leave a larger gap between the engaging member 6 and the engaged member 7 under normal conditions while still allowing the engaging member 6 and the engaged member 7 to engage when heated. This makes it possible to more reliably maintain smooth opening and closing of the outer door screen 3 under normal conditions while also allowing the engaging member 6 and the engaged member 7 to reliably engage when heated by a flame or the like.

[0042] Furthermore, by being heated by a flame or the like and engaging the engaging member 6 and the engaged member 7, the upward extension 6e of the engaging member 6 is disposed between the engaged extension 7d and the opposing extension 7f of the engaged member 7. As a result, when the outer screen 3 moves in the out-of-plane direction relative to the frame body 2, the engaged extension 7d or the opposing extension 7f comes into contact with the upward extension 6e and restricts the movement, thereby making it possible to prevent a gap from occurring between the frame body 2 and the outer screen 3. Here, the engaged extension 7d and the opposing extension 7f of the engaged member 7 correspond to the out-of-plane direction restricting portion that restricts the out-of-plane movement of the engaging portion.

[0043] Furthermore, by being heated by a flame or the like and engaging the engaging member 6 and the engaged member 7, the upward extension 6e of the engaging member 6 faces the inner extension 7e of the engaged member 7 in the left-right direction on the side of the stile 33 closer to the stile 33 than the inner extension 7e. Therefore, when the stile 33 moves in a direction in which the gap between the left vertical frame 22 and the stile 33 widens, the inner extension 7e comes into contact with the upward extension 6e to restrict the movement of the stile 33, making it possible to prevent the gap between the left vertical frame 22 and the stile 33 from widening and creating a gap. Here, the inner extension 7e of the engaged member 7 corresponds to an in-plane direction restricting movement of the engaging portion in a direction in which the gap between the frame material and the stile widens.

[0044] In addition, when the engaging member 6 and the engaged member 7 are heated by a flame or the like and engage with each other, the engaging member 6 moves upward, narrowing the gap between the engaging extension 6d and the inner extension 7e of the engaged member 7, or the engaging extension 6d and the inner extension 7e come into contact with each other. Therefore, even if the outer screen 3 heated by a flame or the like comes off the lower rail 21a, the inner extension 7e comes into contact with the engaging extension 6d, and the outer screen 3 is supported by the left vertical frame 22, so that it is possible to prevent the outer screen 3 from falling off the frame body 2. Here, the engaging extension 6d of the engaging member 6 and the engaged main body 7b of the engaged member 7 correspond to the vertical direction regulating portion that regulates the vertical movement of each other.

[0045] In the above embodiment, an example was described in which the left vertical frame 22 on which the engaging member 6 is provided is made of aluminum, and the door end reinforcement member 332 of the door end frame 33, which forms a small linear expansion portion with a smaller linear expansion coefficient than the left vertical frame 22, is made of steel. However, the material is not limited to this as long as the portion where the engaging member is provided has a larger linear expansion coefficient than the portion where the engaged member is provided.

[0046] In the above embodiment, an example was described in which the engaged member 7 is made of a separate member from the door end reinforcement material 332, but the engaged member and the door end reinforcement material may be formed integrally, and the frame main body may be provided with the engaged member and formed of steel.

[0047] In the above embodiment, an example has been described in which the engaging member 6 is fixed to the left vertical frame 22, and the engaged member 7 is fixed to the door end reinforcement 332 of the door end stile 33, but the present invention is not limited to this. For example, the left vertical frame 22 may include a steel reinforcement, the engaged member may be fixed to the reinforcement, and the engaging member may be fixed to a member of the door end stile that has a larger linear expansion coefficient than steel.

[0048] In the above embodiment, the member having the upward extension 6e is described as the engaging member 6, and the member having the engaged main body 7b with which the upward extension 6e engages is described as the engaged member 7, but this is not limited thereto. That is, the member fixed to the member with a large linear expansion coefficient is the engaging member, and the member fixed to the member with a small linear expansion coefficient is the engaged member, and for example, the engaging member 6 may be fixed to the door end reinforcement material 332, the engaged member 7 is fixed to the left vertical frame 22, and the engaged member 7 that has moved further upward due to thermal expansion engages with the engaging member 6 located above.

[0049] The above-mentioned action and effect of this embodiment has been explained in terms of the engaging member 6 and engaged member 7 provided on the left side of the building fixture 1, but the engaging member 6 and engaged member 7 are similarly provided on the right side of the building fixture 1, so that the same is true between the right vertical frame 23 and the door edge frame 43 of the inner shoji 4.

[0050] In the above embodiment, the fitting 1 for a sliding shoji screen has been described as an example, but the present invention is not limited to this. For example, a fitting 10 for a vertical sliding window as shown in FIG. 7 may be used. In such a fitting 10, for example, if a link mechanism 12 for opening and closing is provided above and below the left side of the shoji screen 11 on the left side of the fitting 10, the link mechanism 12 becomes the reference for the thermal elongation of the upper frame 13 and upper stile 11a. For this reason, it is desirable to provide the engaging member 6 and the engaged member 7 on the right side in the longitudinal direction of the upper frame 13 and upper stile 11a.

[0051] The above-mentioned embodiment is for the purpose of facilitating understanding of the present invention, and is not intended to limit the present invention. The present invention can be modified or improved without departing from the spirit of the present invention, and it goes without saying that the present invention includes equivalents thereof.

[0052] The present embodiment includes at least the following inventions. Mode 1: A fitting comprising a frame body in which frame materials are framed to form an opening, and a screen having a frame body made of frame materials assembled thereto and capable of closing said opening, wherein one of the frame material and the frame material which form a pair opposite each other in the in-plane direction of the screen is provided with an engaging portion at a position facing each other in the in-plane direction, and the other of the frame material and the frame material which form the pair has a small linear expansion portion which has a linear expansion coefficient smaller than that of the one of the members, and an engaged portion which engages with the engaging portion when the one of the members linearly expands is attached to the small linear expansion portion and is provided at a position facing each other in the in-plane direction.

[0053] According to the fitting of the first aspect, one of the pair of frame and stile members facing each other in the in-plane direction of the shoji screen is provided with an engaging portion, and the other member is provided with an engaged portion that engages with the engaging portion when the one member linearly expands, so that when the fitting is heated by a flame or the like, the engaging portion and the engaged portion engage with each other, making it possible to prevent the opposing frame and stile members from separating. At this time, the engaged portion is provided in a small linear expansion portion of the other member that has a smaller linear expansion coefficient than the one member in which the engaging portion is provided, so that the engaging portion provided on the one member moves a greater amount due to thermal expansion than the engaged portion provided on the small linear expansion portion.

[0054] For this reason, when not heated by flames or the like, the engaging portion and the engaged portion are positioned apart so as not to interfere with the opening and closing of the screen, and when heated by flames or the like, the engaging portion and the engaged portion can be engaged by utilizing the difference in the amount of expansion between one of the members and the small linear expansion portion. In other words, while the engaging portion and the engaged portion can be more reliably engaged when heated by flames or the like, the screen can be opened and closed smoothly under normal circumstances. Furthermore, when heated, the engaging portion and the engaged portion engage with each other, making it difficult for the frame material and the frame material to separate, so it is possible to more reliably prevent gaps from occurring between the frame body and the screen.

[0055] Aspect 2: The building fixture described in Aspect 1, characterized in that the relative movement of the frame body and the frame body in the longitudinal direction is restricted at one end side of the pair of the frame material and the frame material in the longitudinal direction, and the engaging portion and the engaged portion are provided at the other end side in the longitudinal direction.

[0056] According to the fitting of the second aspect, the frame and stile on which the engaging or engaged part is provided are restricted in their relative movement in the longitudinal direction at one end of the paired frame and stile, so when heated by a flame or the like, they stretch toward the other end where they are not restricted. And because the engaging or engaged part is provided at the other end opposite the one end in the longitudinal direction, the amount of stretch when heated is greater than that at the one end.

[0057] As a result, the difference in the amount of thermal expansion between the engaging portion and the engaged portion provided on one member and the small linear expansion portion becomes larger, so even if the distance between the engaging portion and the engaged portion is wider under normal conditions, it becomes possible for the engaging portion and the engaged portion to engage when heated. Therefore, while the configuration allows the engaging portion and the engaged portion to be more reliably engaged when heated by a flame or the like, it also makes it possible to more reliably achieve smooth opening and closing of the sliding door under normal conditions.

[0058] Aspect 3: A fixture according to aspect 1 or 2, wherein the engaged portion has an out-of-plane direction restricting portion that restricts movement of the engaging portion in the out-of-plane direction of the screen.

[0059] According to the fitting of aspect 3, when heated by a flame or the like, the engaging portion and the engaged portion engage with each other, which makes it possible to prevent the screen from moving out of the plane relative to the frame and creating a gap.

[0060] Aspect 4: A fixture described in any of Aspects 1 to 3, characterized in that the engaged portion has an in-plane direction regulating portion that regulates movement of the engaging portion in a direction that widens the gap between the frame material and the frame material in the in-plane direction.

[0061] According to the fitting of aspect 4, when heated by a flame or the like, the engaging portion and the engaged portion engage with each other, which makes it possible to prevent the distance between the frame material and the frame material from widening in the in-plane direction and creating a gap.

[0062] Aspect 5: The fitting according to any one of Aspects 1 to 4, wherein the engaging portion and the engaged portion have a vertical direction regulating portion that regulates their movement in the vertical direction.

[0063] According to the fitting of aspect 5, when heated by a flame or the like, the engaging portion and the engaged portion engage with each other, restricting their movement in the vertical direction, thereby making it possible to prevent the shoji screen from falling off the frame.

[0064] Aspect 6: A fixture according to any one of Aspects 1 to 5, characterized in that the one component is an aluminum component, and the small linear expansion portion is a steel component provided on the other component.

[0065] According to the fixture of embodiment 6, the engaging portion is provided on an aluminum member and the engaged portion is provided on a steel member, so that the aluminum member on which the engaging portion is provided, which has a higher linear expansion coefficient than steel, can stretch more than the steel member on which the engaged portion is provided, thereby enabling the engaging portion and the engaged portion to engage more securely. [Explanation of symbols]

[0066] 1 Door and window, 2 Frame, 2a Opening, 3 Outside door (Shoji), 6 engagement member (engagement portion), 6d engagement extension portion (vertical direction regulation portion), 7 Engaged member (engaged part), 7b Engaged main body part (vertical direction regulating part), 7d Engaged extension part (out-of-plane direction regulation part), 7e Inward extension part (in-plane direction regulation part), 7f opposing extension part (out-of-plane direction control part), 10 fittings, 11 shoji screen, 11a upper frame (frame material), 13 upper frame (frame material), 22 left vertical frame (frame material), 30 Frame, 33 Door end frame (frame material), 332 Door end reinforcement material (small linear expansion part),

Claims

1. A fitting having a frame body in which a frame material is framed to form an opening, and a sash having a frame body in which a sash material is framed and capable of closing the opening, One of the frame material and the stile material that are opposed to each other in the in-plane direction of the shoji screen is provided with an engagement portion at a portion that faces each other in the in-plane direction, the other member of the pair of the frame material and the frame member has a small linear expansion portion having a linear expansion coefficient smaller than that of the one member, A fixture characterized in that an engaged portion that engages with the engaging portion when the one of the components undergoes linear expansion is attached to the small linear expansion portion and is provided at locations facing each other in the in-plane direction.

2. The fitting according to claim 1, The frame body and the frame body are restricted in their relative movement in the longitudinal direction at one end side of the pair of the frame material and the frame material, A fixture characterized in that the engaging portion and the engaged portion are provided on the other end side in the longitudinal direction.

3. The fitting according to claim 1 or 2, The engaging portion is characterized in that it has an out-of-plane direction restricting portion that restricts the movement of the engaging portion in the out-of-plane direction of the shoji screen.

4. The fitting according to claim 1 or 2, The engaging portion is characterized in that it has an in-plane direction restricting portion that restricts movement of the engaging portion in a direction that widens the gap between the frame material and the frame material in the in-plane direction.

5. The fitting according to claim 1 or 2, A fixture characterized in that the engaging portion and the engaged portion have an up-down direction regulating portion that regulates their movement relative to each other in the up-down direction.

6. The fitting according to claim 1 or 2, A fixture characterized in that the one member is an aluminum member, and the small linear expansion portion is a steel member provided on the other member.

Images