JP6449002B2 - Joinery - Google Patents

Description

  The present invention relates to a fire prevention measure for a joinery in which a shoji is disposed in a state of opening and closing in an out-of-plane direction with respect to an opening frame.

  In fittings such as casement windows and sliding windows where the shojis open and close in the out-of-plane direction with respect to the opening frame, when the fire becomes hot, the frame deforms along the indoor / outdoor direction, There is a risk that a flame through-hole may be formed between the shoji and the shoji. In particular, the above-described problem becomes more conspicuous between the lower arm of the shoji and the eyeless frame disposed opposite to the shoji because the eyeless frame is attached to the vertical hook only at both ends. .

  For this reason, in this type of joinery, a flame expansion opening is formed by disposing a heat expansion material on the surface of the frame that faces the saddle of the shoji and expanding the heat expansion material when it reaches a high temperature. The situation is prevented (see, for example, Patent Document 1).

JP 2014-109131 A (FIG. 4)

  By the way, in a fitting that disposes the shoji so that it can be opened and closed with respect to the opening frame, various parts necessary for opening and closing the shoji are provided, such as an opening and closing support mechanism for opening and closing the shoji on the surface of the frame. It is common. In such a joinery, the location where the heat-expandable material is disposed is limited, for example, by parts, and even when the heat-expandable material expands, the gap between the frame and the shoji screen is completely blocked. There is a risk that it will not be possible. Moreover, in the lower frame, not only the heat expansion material disposed on the finding surface is likely to be affected by rainwater, but also can be a factor for storing rainwater and dust on the upper surface of the frame.

  An object of this invention is to provide the fitting which can prevent more reliably the situation where the through-hole of a flame is formed between a frame and the saddle of a shoji in view of the said situation.

In order to achieve the above object, the joinery according to the present invention is a joinery in which a shoji is arranged in a state of opening and closing in an out-of-plane direction with respect to the opening frame . It comprises two frame elements, and is configured by interposing a heat insulating material in the heat transfer path of these two frame elements, and the frame is located in a portion adjacent to the heat insulating material in the indoor frame element. A shoji-facing surface is provided along the direction and facing the shoji finding surface, a heating expansion material is disposed on the shoji facing surface, and a heating expansion material is disposed below the heat insulating material. It is characterized by that.

  According to the present invention, since the heat expansion material is disposed on the shoji facing surface along the direction in which the frame is found, even when a part for opening and closing the shoji is provided on the face of the frame. It is possible to arrange a heat expansion material over the entire length. Moreover, even when applied to the lower frame, the shoji-facing surface becomes an upright surface, so that the heat expansion material is not likely to be affected by rainwater. As a result, when a high-temperature state occurs at the time of the occurrence of a fire, the heated expansion material surely expands over the entire length of the frame, and the situation where a flame through-hole is formed can be prevented more reliably. It becomes like this.

  Moreover, the present invention is characterized in that, in the joinery described above, a hollow portion is formed at least in a frame disposed to face the lower arm of the shoji, and a reinforcing material is disposed in the hollow portion.

  According to the present invention, the load of the shoji can be supported by the reinforcing material disposed in the hollow portion, and it is possible to prevent the frame from being deformed even when a high temperature state occurs in the event of a fire. Become.

  According to the present invention, even when the heat insulation material is burned out due to a high temperature at the time of a fire, the expanded heated expansion material closes the gap between the frame element on the indoor side and the frame element on the outdoor side. In addition, it is possible to prevent a situation where the heat-dissipated portion of the heat insulating material becomes a flame through-hole.

The present invention also provides have you to fittings described above, the said chamber inside of the frame element provided with a storage portion for storing the thermal insulation material, and locate surface formed around the accommodating portion in the frame element of the outdoor side An engagement member that covers the housing member in a non-contact state is disposed, and when the indoor frame element and the outdoor frame element move in a prospective direction, the engagement member is located on the finding surface of the housing portion. It is made to engage with.

  According to this invention, even when the thermal insulation material is burned down in the event of a fire and the connected state between the indoor frame element and the outdoor frame element is released, the engaging member remains in the housing portion. By engaging the finding surface, there is no possibility that the indoor side frame element and the outdoor side frame element move in a direction away from each other. Therefore, a situation where a flame through-hole is formed between the indoor side frame element and the outdoor side frame element due to the dropout of the outdoor side frame element with respect to the indoor side frame element is prevented. be able to.

In the joinery described above, the present invention is characterized in that the heating expansion material is disposed in a portion of the engagement member that faces the lower surface of the heat insulating material.

  According to the present invention, the expansion of the heat-expandable material can more reliably block the gap between the indoor side frame element and the outdoor side frame element.

  According to the present invention, since the heat expansion material is disposed on the shoji facing surface along the direction of finding the frame, even when a part for opening and closing the shoji is provided on the face of the frame. It is possible to arrange a heat expansion material over the entire length. Moreover, even when applied to the lower frame, the shoji-facing surface becomes an upright surface, so that the heat expansion material is not likely to be affected by rainwater. As a result, when a high-temperature state occurs at the time of the occurrence of a fire, the heated expansion material surely expands over the entire length of the frame, and the situation where a flame through-hole is formed can be prevented more reliably. It becomes like this.

FIG. 1 is a view of a joinery that is Embodiment 1 of the present invention as seen from the outdoor side. FIG. 2 is a longitudinal sectional view of the joinery shown in FIG. FIG. 3A is a perspective view of an end portion of a seamless frame applied to the joinery illustrated in FIG. 1 as viewed from the indoor side. FIG. 3-2 is a perspective view of an end portion of a seamless frame applied to the joinery illustrated in FIG. 1 as viewed from the outdoor side. FIG. 4 is a perspective view of a reinforcing material provided on the seamless frame of the joinery shown in FIG. FIG. 5 is a vertical cross-sectional view of a main part when the seamless frame of the joinery shown in FIG. 1 is in a high temperature state. FIG. 6 is a longitudinal sectional view of an essential part showing Modification 1 of the joinery shown in FIG. FIG. 7 is a longitudinal sectional view of an essential part showing a second modification of the joinery shown in FIG. FIG. 8 is a longitudinal sectional view of an essential part of a joinery that is Embodiment 2 of the present invention.

  Hereinafter, preferred embodiments of a fitting according to the present invention will be described in detail with reference to the accompanying drawings.

(Embodiment 1)
1 and 2 show a joinery that is Embodiment 1 of the present invention. The joinery illustrated here is a corrugated window in which two shojis 20 and 30 are vertically arranged inside the opening frame 10.

  The opening frame 10 forms a quadruple frame of the upper frame 11, the lower frame 12, and the left and right vertical frames 13, and further, an unframed frame (frame) 14 along the horizontal direction at a position intermediate between the upper frame 11 and the lower frame 12. It is comprised by arrange | positioning. The upper frame 11 and the lower frame 12 respectively have metal frame portions 11A and 12A made of extruded shapes formed of aluminum or aluminum alloy, and resin frame portions 11B and 12B made of extruded shapes formed of resin. It is composed. The metal frame portions 11A and 12A and the resin frame portions 11B and 12B are engaged with each other in a state of being arranged in parallel in the prospective direction, and the metal frame portions 11A and 12A are disposed on the outdoor side and attached to the housing B. Although not shown in the drawing, the vertical frame 13 of the opening frame 10 has the same configuration as the upper frame 11 and the lower frame 12.

  On the other hand, the seamless frame 14 has two seamless frame parts (frame elements) 140 and 240 made of extruded shapes formed of aluminum or aluminum alloy arranged in parallel in the prospective direction, and a heat insulating material between them. 340 is configured by connecting. The heat insulating material 340 is made of a hard resin such as urethane, and is accommodated in the accommodating portions 141 and 241 provided in the respective invisible frame portions 140 and 240 between the two invisible frame portions 140 and 240. Is intervening. As the heat insulating material 340, a preformed material may be accommodated in the accommodating portions 141 and 241 of the two seamless frame portions 140 and 240, or a resin material having curability may be accommodated in the two seamless frame portions 140. , 240 may be cured after filling over the accommodating parts 141, 241.

  The accommodating portions 141 and 241 are configured to have the entire length of the seamless frame 14 so as to face each other in the respective seamless frame portions 140 and 240, and a storage groove 141a for storing the heat insulating material 340 in a portion facing each other. , 241a. In an invisible frame portion (hereinafter referred to as “outer unframed frame portion 140” for distinction) arranged on the outdoor side, an outward finding wall portion 142 extending in the vertical direction is formed on a portion located on the indoor side. The housing portion 141 is configured by forming a housing groove 141 a along the horizontal direction at the upper edge portion of the outer finding wall portion 142. On the other hand, in an invisible frame portion (hereinafter referred to as “inner unlined frame portion 240” in the case of distinction) arranged on the indoor side, a prospective wall portion extending along a prospective direction in a lower portion. 242 is provided, and an inner finding wall portion 243 extending in the vertical direction is provided in a portion located on the outdoor side, and the edge portion located on the outermost side of the prospective wall portion 242 is along the finding direction. An accommodating portion 241 is configured to protrude downward. As shown in FIG. 1, the seamless frame 14 in which the accommodating portions 141 and 241 of the seamless frame portions 140 and 240 are connected by the heat insulating material 340 is the inner seamless frame portion 240 with respect to the external seamless frame portion 140. Has a cross-sectional shape projecting greatly upward.

  The two shojis 20 and 30 are configured by mounting upper rods 22 and 32, lower rods 23 and 33, and left and right vertical rods 24 and 34 on the four circumferences of rectangular glasses 21 and 31, respectively. As the glasses 21 and 31, multi-layer glass in which meshed glass or heat-resistant tempered glass 21a and 31a and float glass 21b and 31b are laminated is used. The upper rods 22, 32 and the lower rods 23, 33 are respectively a metal rod portion 22A, 32A, 23A, 33A made of an extruded shape formed of aluminum or an aluminum alloy, and a resin rod portion made of an extruded shape formed of a resin. 22B, 32B, 23B, 33B. The metal cage portions 22A, 32A, 23A, 33A and the resin cage portions 22B, 32B, 23B, 33B are engaged with each other in a state of being juxtaposed in the prospective direction, and the metal cage portions 22A, 32A, 23A, 33A are connected to the outdoor side. It arrange | positions to the cage | basket of each shoji 20,30. Although not clearly shown in the figure, the downpipe 24 of the shoji 20 and the downpipe 34 of the shoji 30 have the same configuration as the upper eaves 22 and 32 and the lower eaves 23 and 33.

  As shown in FIGS. 2, 3-1, and 3-2, the shoji disposed below the opening frame 10 (hereinafter referred to as “lower shoji 30”) is an opening frame divided by an invisible frame 14. 10 is fixed to the opening frame 10 via the flanges 32, 33 and 34 so that the lower opening of the 10 is always closed. A shoji disposed above the opening frame 10 (hereinafter, referred to as “upper shoji 20”) can be opened and closed via the opening / closing support mechanism 25 so as to open and close the upper opening of the opening frame 10 divided by the invisible frame 14. Is supported. Although not clearly shown in the figure, the opening / closing support mechanism 25 operates so that the upper shoji 20 is pushed open toward the outdoor side with respect to the opening frame 10. In the first embodiment, the opening / closing support mechanism 25 is configured so that the upper shoji 20 functions as a vertical sliding window when an operator handle 26 provided on the seamless frame 14 is operated. That is, in the first embodiment, one vertical rod 24 slides along the longitudinal direction of the upper rod 22 and the lower rod 23, and the other vertical rod 24 is centered on the longitudinal direction of the one vertical rod 24. An opening / closing support mechanism 25 is configured to open outward. The operator handle 26 is attached in a state in which the operator handle 26 protrudes from the finding surface of the inner seamless frame portion 240 to the indoor side in the seamless frame 14, and the opening / closing support mechanism 25 can be operated by rotating.

  On the other hand, the reinforcing frame 50 and the engaging member 60 are attached to the outer seamless frame portion 140 and the upper heating expansion material 70 is disposed on the inner seamless frame portion 240 of the seamless frame 14 of the fitting. is there. The reinforcing member 50 and the engaging member 60 are formed of stainless steel or a steel material having a melting point higher than that of aluminum or aluminum alloy, which is a material of the ridge or the frame, and are provided at portions extending over the entire length of the seamless frame 14.

  As shown in FIG. 4, the reinforcing member 50 includes a flat plate-shaped attachment long plate portion 51 and a pair of bent plates that extend from both side edges of the attachment long plate portion 51 in the same direction. The portion 52 and a pair of attachment plate portions 53 provided at both ends of the attachment long plate portion 51 are integrally formed. The attachment plate portion 53 is bent in the same direction as the bent plate portion 52 from both edge portions of the attachment long plate portion 51. The reinforcing member 50 is disposed so as to be accommodated in a hollow portion formed in the outer seamless frame portion 140, and is fixed to the outer seamless frame portion 140 via the attachment long plate portion 51. It is being fixed to the vertical frame 13 through the attachment plate part 53 of this. When the attachment long plate portion 51 is fixed to the outer seamless frame portion 140, the open / close support mechanism 25 may be fastened together with a screw for attaching to the outer seamless frame portion 140. As is clear from FIG. 2, the reinforcing member 50 is in contact with the upper and lower wall portions in the hollow portion of the outer seamless frame portion 140 and functions to improve the section modulus of the reinforcing member 50.

  As shown in FIGS. 2, 3-1, 3-2, the engaging member 60 has a flat mounting base 61 and a cover portion that is bent from one edge of the mounting base 61. 62, an engagement receiving portion 63 extending from the extending edge of the cover portion 62 so as to bend in the direction opposite to the mounting base 61, and a pair of mounting plate portions provided at both ends of the mounting base 61 64 is integrally formed. The engaging member 60 includes a cover portion 62 that covers a lower portion of the heat insulating material 340 exposed between the accommodating portions 141 and 241, and the engaging receiving portion 63 is provided in the inner frame portion 240. It is fixed by screwing a screw 65 to the outer finding wall 142 of the outer frame portion 140 via the mounting base 61 in a state of facing the finding surface located on the indoor side. Moreover, it fixes also to the metal frame part which is not shown in the vertical frame 13 by screwing a screw | thread with the finding surface of the vertical frame 13 (refer FIG. 1) via the attachment board part 64 provided in the both ends of the engaging member 60. FIG. It is.

  As is apparent from the figure, the engagement receiving portion 63 and the accommodating portion 241 of the inner seamless frame portion 240 are set so as to be close to each other while ensuring a gap. A gap larger than the gap with the engagement receiving portion 63 is secured between the cover portion 62 and the accommodating portion 241 of the inner frame portion 240, and a lower portion forming a strip shape on the upper surface of the cover portion 62 A heating expansion material 66 is provided. The lower heating expansion material 66 expands when it reaches a high temperature state of about 200 ° C., such as expanded graphite, and is a heat insulating material that connects the housing portions 141 and 241 of the two frameless frame portions 140 and 240. It is affixed on the part corresponding to the full length of the invisible frame 14 so that the lower surface of 340 may be opposed.

  The upper heating expansion material 70 is configured in a band shape having a constant width, similarly to the lower heating expansion material 66, and a finding surface that is directly above the housing portion 241 in the inner finding wall portion 243 of the inner frame portion 240. It is affixed to the sliding paper facing surface 243a. The inner finding wall portion 243 of the inner blind frame portion 240 stands up along the finding direction, and finds the outer fin portion 23a extending downward from a portion located on the outer side of the lower collar 23 of the upper shoji 20. It faces the surface 23b. Therefore, the upper heating expansion material 70 can be attached over the entire length of the seamless frame 14 without interfering with the opening / closing support mechanism 25 provided on the upper surface of the outer seamless frame portion 140. In addition, since the upper heating expansion material 70 affixed to the inner finding wall portion 243 is in an upright state, even if rainwater is applied, it does not gradually flow downward and stagnate, and expands at about 200 ° C. When the temperature is reached, it will surely expand.

  In the joinery configured as described above, the resin frame portions 11B and 12B are arranged on the indoor side of the upper frame 11, the lower frame 12, and the left and right vertical frames 13, and the upper collars 22 and 32 of the respective shojis 20 and 30, The resin cage portions 22B, 32B, 23B, and 33B are disposed on the indoor side of the lower rods 23 and 33 and the left and right vertical rods 24 and 34. Further, in the seamless frame 14, a heat insulating material 340 is interposed between the two seamless frame portions 140 and 240, and fixed to the metal frame portions (not shown) of the outer seamless frame portion 140 and the vertical frame 13. The engaging member 60 is not in contact with the inner frame portion 240. Therefore, according to this joinery, there is an advantage that heat transmission is suppressed indoors and outdoors, the air conditioning efficiency is increased, and the occurrence of condensation can be suppressed.

  Moreover, in this joinery, since the reinforcing member 50 and the engaging member 60 are fixed to the seamless frame 14, the seamless frame 14 extends along the indoor / outdoor direction even when a high temperature state occurs in the event of a fire. The situation where it deforms can be suppressed. Furthermore, in the stage before reaching the temperature at which the seamless frame 14 is deformed, as shown in FIG. 5, the upper heating expansion material 70 attached to the internal seamless frame portion 240 expands, The space with the lower arm 23 of the upper shoji 20 will be filled. As described above, the upper heating expansion material 70 is attached to the inner finding wall portion 243 of the standing inner seamless frame portion 240, and does not interfere with the opening / closing support mechanism 25, so that the full length of the seamless frame 14 is increased. It is pasted. Therefore, in the event of a fire, the gap between the blind frame 14 and the lower lid 23 of the upper shoji 20 is surely closed over the entire length, leading to a situation where a flame through hole is formed. There is no fear.

  Moreover, according to the above-mentioned joinery, when it becomes a high temperature state, the lower heating expansion material 66 attached to the upper surface of the engaging member 60 expands, and the engaging member 60 and the accommodating portion 241 of the inner frame portion 240 Will be filled in the gap. Furthermore, as described above, the upper region between the accommodating portion 141 of the outer seamless frame portion 140 and the accommodating portion 241 of the inner seamless frame portion 240 is blocked by the expanded upper heating expansion material 70. Become. Therefore, even if the heat insulating material 340 of the seamless frame 14 is burned out, there is no gap between any part between the external seamless frame portion 140 and the internal seamless frame portion 240, and between the room and the outdoor. There is no risk of flame penetration.

  In addition, since the engagement receiving portion 63 of the engagement member 60 is disposed close to the finding surface located on the indoor side of the accommodating portion 241 provided in the inner frame portion 240, the above-described configuration is further described. As described above, since the gap between the engaging member 60 and the accommodating portion 241 of the inner seamless frame portion 240 is filled by the expansion of the lower heating expansion material 66, the inner seamless frame portion 140 and the inner seamless frame portion 140 are burned out as the heat insulating material 340 is burned. Even when the state of connection with the eyeless frame portion 240 is released and moved away from each other, the engagement receiving portion 63 of the engagement member 60 is immediately placed on the finding surface located on the indoor side of the housing portion 241. Engage and subsequent movement will be blocked. Therefore, although the operator handle 26 protrudes from the finding surface located on the indoor side of the seamless frame 14, there is no risk of the internal seamless frame portion 240 dropping out to the indoor side, and the seamless frame 14 However, it is possible to prevent a situation where a flame through-hole is formed due to the separation into the outer seamless frame portion 140 and the inner seamless frame portion 240.

  In the first embodiment described above, since the reinforcing member 50 is disposed in the hollow portion formed in the outer seamless frame portion 140 of the seamless frame 14, the deformation of the seamless frame 14 is more reliably suppressed. It is possible to prevent the occurrence of a flame through-hole. However, in the present invention, it is not always necessary to provide the reinforcing material 50, and the frame may be configured by omitting the reinforcing material 50 as in Modification 1 shown in FIG.

  Further, in the first embodiment described above, the engagement receiving portion 63 is engaged with the outer seamless frame portion 140 so as to face the finding surface located on the indoor side of the accommodating portion 241 provided in the internal seamless frame portion 240. The member 60 is provided, and the lower heating expansion material 66 is provided on the engaging member 60 so as to oppose the lower surface of the heat insulating material 340 exposed from the accommodating portions 141 and 241 of the two invisible frame portions 140 and 240. Therefore, even when the heat insulating material 340 is burned out, it is possible to more reliably prevent a situation where a flame through-hole is formed. However, in the present invention, it is not always necessary to provide the engaging member 60 and the lower heating expansion material 66, and the frame may be configured by omitting the engaging member 60 as in the second modification shown in FIG. However, it is preferable to dispose the heat expansion material 145 in a portion of the outer seamless frame portion 140 that is below the heat insulating material 340. That is, if the heat expansion material 145 expands in a high temperature state, it is possible to prevent a situation where a flame through-hole is formed even when the heat insulating material 340 is burned out. Of course, in the second modification, the reinforcing member 50 may be disposed in the hollow portion of the outer seamless frame portion 140. Further, in the first and second modifications, the same reference numerals are given to the same configurations as those in the first embodiment.

(Embodiment 2)
FIG. 8 shows a joinery that is Embodiment 2 of the present invention. The joinery illustrated here is referred to as a stepped window in which two shojis 20 and 30 are vertically arranged inside the opening frame 10, and is different from the first embodiment only in the configuration of the invisible frame 80. ing. Hereinafter, parts different from the first embodiment will be mainly described, and parts common to the first embodiment will be denoted by the same reference numerals and detailed description thereof will be omitted.

  The seamless frame 80 used in the joinery of Embodiment 2 is a single member made of an extruded shape formed by aluminum or an aluminum alloy, and has a finding wall portion 81 on the upper surface of a portion located on the indoor side. ing. The finding wall portion 81 is a portion protruding upward from the edge portion located on the indoor side of the seamless frame 80, and has a shoji facing surface 81a on the surface located on the outdoor side. The shoji-facing surface 81a stands up along the finding direction, and faces the finding surface 23b of the outer fin portion 23a extending downward from a portion located on the outer side of the lower collar 23 of the upper shoji 20.

  A heating expansion material 90 is disposed over the entire length of the blind frame 80 on the shoji facing surface 81a. The heat-expandable material 90 expands when it reaches a high temperature of about 200 ° C., such as expanded graphite, and is configured in a band shape having a certain width. The heating expansion material 90 disposed on the shoji facing surface 81 a can be attached to the entire length of the seamless frame 80 without interfering with the opening / closing support mechanism 25 provided on the upper surface of the seamless frame 80. Moreover, since the heated expansion material 90 attached to the shoji facing surface 81a is in an upright state, even if rainwater is applied, it does not flow out gradually and does not stagnate, and reaches an expansion temperature of about 200 ° C. It will surely swell at that point.

  In the joinery configured as described above, even when a high temperature state occurs in the event of a fire, the heated expansion material 90 attached to the seamless frame 80 expands before reaching the temperature at which the seamless frame 80 is deformed. Then, the space between the blind frame 80 and the lower arm 23 of the upper shoji 20 is filled. As described above, the heating expansion material 90 is attached to the shoji-facing surface 81a of the standing frame 80, and is attached to the entire length of the frame 80 without interfering with the opening / closing support mechanism 25. is there. Therefore, in the event of a fire, the gap between the blind frame 80 and the lower lid 23 of the upper shoji 20 is reliably closed over the entire length, leading to a situation in which a flame through-hole is formed. There is no fear. In the second embodiment, the reinforcing material is not provided in the seamless frame 80, but the same reinforcing material 50 as in the first embodiment may be provided in the hollow portion of the seamless frame 80. Of course.

  In the first embodiment, the first modification, the second modification, and the second embodiment, the vertical sliding window is illustrated, but the present invention opens and closes the shoji in the out-of-plane direction with respect to the opening frame. If it does, it can be applied to other fittings such as a casement window or a side sliding window. Moreover, it is not always necessary to have two shoji screens. Further, although an example in which the heat expansion material 90 is disposed on the seamless frame 80 is illustrated, the seamless frame 80 is not necessarily required, and may be applied to other frames such as an upper frame and a lower frame. Absent.

  DESCRIPTION OF SYMBOLS 10 Opening frame, 14 Solid frame, 20 Shoji, 23b Finding surface, 50 Reinforcement material, 60 Engagement member, 66 Lower heating expansion material, 70 Upper heating expansion material, 80 Mud frame, 81a Shoji facing surface, 90 Heat expansion Material 140, 240 seamless frame part 141, 241 housing part 141a, 241a housing groove 243a finding surface 340 heat insulating material

Claims (4)

In a fitting with a shoji arranged in an out-of-plane direction with respect to the opening frame
The frame constituting the opening frame includes two frame elements arranged in parallel in the prospective direction, and is configured by interposing a heat insulating material in the heat transfer path of these two frame elements,
In a frame element on the indoor side, a portion adjacent to the heat insulating material is provided with a shoji facing surface along the direction of finding the frame and facing the finding surface of the shoji, and a heating expansion material is disposed on the shoji facing surface. ,
Furthermore, the joinery characterized by arrange | positioning the heat expansion material in the site | part used as the downward direction of the said heat insulating material .   The joinery according to claim 1, wherein a hollow portion is formed at least in a frame disposed to face the lower arm of the shoji, and a reinforcing material is disposed in the hollow portion. The said interior side of the frame element provided with a storage portion for storing the heat insulating material, and distributing an engagement member for covering the found surface formed around the accommodating portion in a non-contact state to the frame element of the outdoor side The engagement member is engaged with a finding surface of the housing portion when the indoor-side frame element and the outdoor-side frame element move in a prospective direction. Joinery as described in. The joinery according to claim 3 , wherein the heating expansion material is disposed in a portion of the engagement member that faces the lower surface of the heat insulating material.

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