JP6017307B2 - Joining structure and joinery - Google Patents

Description

  The present invention relates to a joint structure and joinery in which two members made of synthetic resin are welded by abutting each other.

  As a joint structure in which two members made of synthetic resin are welded by abutting each other members, for example, in the cross-sectional shape, an inclined notch portion at the end of the same shape portion having a housing mounting portion with each other A connecting structure for a sash frame member is known in which each of the inclined notches is welded by being brought into contact with each other and integrally joined (see, for example, Patent Document 1). Since the sash frame material joined in this way is formed only of a synthetic resin frame material, for example, when it is heated by being exposed to a flame by a fire or the like, the frame material is melted and partitioned by the sash. There is a possibility that a gap passing through the two spaces may be generated. For this reason, it is known that each frame member is provided with a reinforcing member such as iron to improve fire resistance.

Japanese Utility Model Publication No. 3-12152

  When the end portions are butted and welded, for example, a heater is brought into contact between the two butted portions of the two members to be welded to melt the joining portion, and then the melted end portions are butted and joined. For this reason, since the reinforcement member cannot be protruded outside the joint portion between the two members, the ends of the reinforcement members cannot be matched with the ends of the two members to be melted. Even if joined, there is a portion where the reinforcing member does not exist in the joined portion, and when exposed to a flame or the like and heated, there is a through hole through which the flame penetrates at the joined portion where the reinforcing member does not exist. There is a problem that it may occur.

  This invention is made | formed in view of this subject, The place made into the objective is to provide the joining structure and joinery which a through-hole does not produce easily even if it heats.

  In order to achieve this object, in the joining structure of the present invention, two members made of synthetic resin having a hollow portion are provided with a nonflammable or flame-retardant reinforcing member in each of the hollow portions, and the members are mutually A joining structure characterized in that a thermally expandable refractory material foamed across the two members when heated is provided on at least one of the two members. is there.

  According to such a joining structure, when heated, the thermally expandable refractory material foams between the two members provided with the incombustible or flame retardant reinforcing member, and therefore the two members are joined. Filled with foamed refractory material. For this reason, it is possible to prevent the formation of a through-hole at the joint between the two members as well as the two members provided with the nonflammable or flame-retardant reinforcing member.

In this joining structure, the reinforcing member has a portion having an intersecting surface intersecting the longitudinal direction at an end in the longitudinal direction of the reinforcing member, and the thermally expandable refractory material is the reinforcing member It is desirable to be provided on the intersecting surface so as to foam in a direction protruding from the member in the longitudinal direction.

  According to such a joining structure, the heat-expandable refractory material is provided at a portion having an intersecting surface intersecting the longitudinal direction at the end of the reinforcing member in the longitudinal direction, and protrudes in the longitudinal direction from the reinforcing member. Therefore, it is possible to foam the heat-expandable refractory material more reliably between the two members.

  In this joining structure, the thermally expandable refractory material is provided on one of the reinforcing members of the two members, and is provided so as to foam toward the other reinforcing member. It is desirable that

  According to such a joining structure, the thermally expandable refractory material provided on one of the reinforcing members each of the two members is foamed toward the other reinforcing member by being heated. It is possible to more reliably fill the foamed refractory material at the joint between the two members.

  In the joining structure, it is preferable that the two reinforcing members respectively included in the two members have facing portions facing each other, and the thermally expandable refractory material is provided on the facing portions. .

  According to such a joining structure, the thermally expandable refractory material is provided on the two facing portions of the two reinforcing members that the two members respectively have, so that the heated and foamed refractory material faces each other. It is possible to make a nonflammable or flame retardant member continue between two members by filling between the portions. For this reason, it is possible to provide higher fire resistance.

In the foregoing joining structure before Symbol reinforcing member is provided in a region not in contact with the heater for welding the reinforcing member, it is preferable that the thermally expandable fireproof material is provided over the entire area.

  According to such a joining structure, since the reinforcing member is provided in a region that does not contact the heater that is heated when welding, it is possible to reliably weld the two members. Moreover, when heated from the outside, the foamed refractory material is filled in the hollow portions of the two members provided with the reinforcing member, so that the through holes are less likely to be generated in the two members. For this reason, it is possible to provide higher fire resistance.

In the foregoing joining structure, the reinforcing member, the is formed of a plate-like metal having a longitudinal direction along the plane, the intersection surface are becoming electromotive bending portion that forms a plane along the longitudinal direction It is desirable.

  According to such a joining structure, since the reinforcing member is formed of a plate-like metal, it is possible to realize a lightweight and inexpensive reinforcing member while being a nonflammable metal. Further, since the intersecting surface is formed by bending a portion that forms a plane along the longitudinal direction, it is possible to easily form the intersecting surface that intersects the longitudinal direction.

  In this joining structure, the two members are joined to a portion where a side portion of one member is cut out by abutting an end portion of the other member, and provided in the one member. It is desirable that the member is cut away so as not to contact the other member.

  According to such a joining structure, when the end of the other member is abutted and joined to a portion where the side of one of the two members is cut away, the joining is provided on one of the members. Since the reinforcing member is notched so as not to contact the other member, a heater is arranged between the notched portion of one member and the end of the other member without contacting the reinforcing member. It is possible to melt and weld more reliably.

  Moreover, it is the fitting provided with the frame or the housing | casing joined by the said joining structure. According to such a joinery, it is possible to provide a joinery having a high fire resistance without being easily formed with a through-hole even when heated by being exposed to a flame due to a fire or the like.

  ADVANTAGE OF THE INVENTION According to this invention, it is possible to provide the joining structure and joinery which are hard to produce a through-hole even if heated.

It is the external appearance figure which looked at the fitting which concerns on this embodiment from the indoor side. It is AA sectional drawing in FIG. It is BB sectional drawing in FIG. It is a front view which shows the junction part of a fence and a middle rail. It is a perspective view which shows the junction part of a fence and a middle rail. It is an image figure which shows the refractory material foamed in the junction part of a fence material and a middle crosspiece. It is a figure which shows the 1st modification of the joining structure of a saddle material and an intermediate | middle crosspiece. It is a figure which shows the 2nd modification of the junction structure of a brazing material and an intermediate | middle crosspiece. FIG. 9A is a diagram showing a first modification of the heat-expandable refractory material provided at the reinforcing member and the end of the reinforcing member, and FIG. 9B is a diagram showing the reinforcing member and the end of the reinforcing member. It is a figure which shows the 2nd modification of the thermally expansible refractory material provided, FIG.9 (c) is a figure which shows the 3rd modification of the thermally expansible refractory material provided in the edge part of a reinforcement member and a reinforcement member. is there. It is a front view which shows the junction part of brazing materials. It is a front view which shows the 1st modification of the junction part of brazing materials. It is a front view which shows the 2nd modification of the junction part of brazing materials.

  Hereinafter, a joint structure and a fitting according to an embodiment of the present invention will be described with reference to the drawings.

  In the present embodiment, description will be given by taking as an example a fitting 1 provided with a door that is provided at the boundary between the room and the outdoors and that can be opened and closed as shown in FIG.

  The joinery 1 of the present embodiment includes a frame 10 in which four frame members 11 having hollow portions 11a penetrating in the longitudinal direction are framed four times, and four ridges having hollow portions 22a and 22b penetrating in the longitudinal direction. And a door 20 having a casing 21 in which a material 22 is framed on four sides. The frame body 10 is fixed to a housing such as a building, and the door 20 is rotatably supported by the frame body 10 so as to be able to open and close an opening that is formed by the frame body 10 and communicates indoors and outdoors.

  In the following description, when the fitting 1 is viewed from the indoor side, the vertical direction is the vertical direction, the horizontal direction is the horizontal direction or finding direction, and the depth direction that is the indoor / outdoor direction is the prospective direction. Moreover, about each member which comprises the fitting 1, the center side in the surface direction of the frame 10 and the housing 21 is shown as an inner peripheral side, and the outer side of the frame 10 and the housing 21 is shown as an outer peripheral side.

  The frame 10 is composed of four frame members 11 made of synthetic resin and having the same cross-sectional shape, each having a predetermined length, cut at 45 degrees, and abutted against each other and welded together. Yes. The casing 21 includes four casings 22 made of synthetic resin extruded members having the same cross-sectional shape, each having a predetermined length, cut at an end of 45 degrees, abutted against each other, and welded. Yes. An intermediate rail 23 is provided in the casing 21 so as to be spanned to substantially the center in the vertical direction between a door-end fence made of a rod material 22 arranged in the vertical direction and a suspension fence. For this reason, the area surrounded by the housing 21 is divided into two upper and lower areas by the middle rail 23, and each of the divided areas is closed by the multilayer glass 3. The intermediate rail 23 is also an extruded member made of synthetic resin, and the cross-sectional shape thereof has the same portion as the cross-sectional shape of the brazing material 22.

  In this embodiment, in the frame body 10 and the frame body 21 which the synthetic resin joinery 1 having high fire resistance has, the frame materials 11, the frame materials 22, the frame material 22 and the intermediate beam 23, This joining structure will be described by taking the joining portion between the brazing material 22 and the intermediate rail 23 as an example.

  As shown in FIG. 2, the saddle member 22 includes a saddle body 22c having an inner hollow portion 22a and an outer hollow portion 22b formed side by side inside and outside, and an outer periphery of the saddle member 21 on the outdoor side of the saddle body 22c. The frame abutting portion 22d that projects to the side and abuts against the frame 10 and the inner peripheral side of the casing 21 on the indoor side of the casing main body 22c and accommodates the outer peripheral end of the laminated glass 3 An inner peripheral protruding portion 22f forming the accommodating portion 22e, a fitting recess 22g into which the pressing edge 4 forming the accommodating portion 22e together with the flange main body 22c and the inner peripheral protruding portion 22f is fitted on the outdoor side of the flange main body 22c; have. Since the inner peripheral protruding portion 22f that forms the housing portion 22e protrudes on the inner peripheral side of the inner hollow portion 22a, the laminated glass 3 is disposed on the inner peripheral side of the outer hollow portion 22b, and the surface on the indoor side is While being in contact with the inner peripheral protruding portion 22f, it is held by the pressing edge 4 fitted to the fitting recess 22g on the outdoor side.

  Since the laminated glass 3 is provided on the upper and lower sides of the middle rail 23, the shape is such that the outer peripheral end of the laminated glass 3 is accommodated, and the accommodating portions 22 e similar to the brazing material 22 are provided on the upper side and the lower side, respectively. There is no.

  Specifically, as shown in FIG. 3, the intermediate rail 23 includes an intermediate rail main body 23 c having an inner rail hollow portion 23 a and an intermediate rail outer hollow portion 23 b formed side by side, and an intermediate rail main body 23 c. The inner rail side inner peripheral protrusion that protrudes upward and downward from the middle rail 23 to form the upper laminated glass 3 and the middle rail side accommodation portion 23d that accommodates the outer peripheral edge of the lower laminated glass 3 The upper and lower middle rail side fitting in which the pressing edge 4 that forms the middle rail side housing portion 23d together with the middle rail main body 23c and the middle rail side inner peripheral protruding portion 23e is fitted on the outer side of the middle rail main body 23c. And a recess 23f. At this time, the cross-sectional shape of the middle rail 23 is such that the middle rail-side inner circumferential protruding portion 23e and a part of the middle rail main body 23c including the middle rail-side fitting recess 23f, the inner circumferential protruding portion 22f of the saddle member 22, In addition, a part of the bag main body 22c including the fitting recess 22g has the same shape.

  Reinforcing members that are formed of a plate-like metal, such as an iron plate, in the outer hollow portion 22b along the longitudinal direction of the brazing material 22 and have a U-shaped cross section in each of the brazing materials 22 constituting the housing 21. 30 is provided. The reinforcing member 30 has a U-shaped cross section at a pair of opposed surface portions 31 arranged so as to face each other with a space therebetween and a connecting portion 32 that connects one end of the pair of opposed surface portions 31. It is formed as follows.

  As shown in FIG. 2 and FIG. 4, the reinforcing member 30 provided in the outer hollow portion 22 b of each brazing member 22 has a hook partition wall portion in which the connecting portion 32 partitions the inner hollow portion 22 a and the outer hollow portion 22 b. The thermal expansion graphite 38 as the thermal expansion refractory material is provided over the entire length of the reinforcing member 30 on both surfaces of the connecting portion 32.

  The intermediate beam 23 is provided with a reinforcing member 33 formed of a plate-like metal, for example, an iron plate, along the longitudinal direction of the intermediate beam 23 and having a U-shaped cross section along the longitudinal direction of the intermediate beam 23. . The reinforcing member 33 is connected to a pair of facing surface portions 34 arranged so as to face each other at an interval, and one end portion of the pair of facing surface portions 34, and to a connecting portion 35 that forms a plane along the longitudinal direction. The cross section is formed in a U shape. Further, as shown in FIG. 5, the reinforcing member 33 includes a bent portion 36 in which the connecting portion 35 extends from both ends in the longitudinal direction and is bent toward the facing surface portion 34. It is provided so as to block. Here, the surface facing the outside of the bent portion 36 forms an intersecting surface 36a.

  The reinforcing member 33 provided in the middle rail outer hollow portion 23b of the middle rail 23 also has the connecting portion 35 along the middle rail partition wall portion 23g that partitions between the middle rail inner hollow portion 23a and the middle rail outer hollow portion 23b. As shown in FIGS. 3 and 4, thermally expandable graphite 38 is provided over the entire length of the reinforcing member 33 on both surfaces of the connecting portion 35. Further, as shown in FIGS. 4 and 5, the reinforcing member 33 provided on the intermediate rail 23 is provided with thermally expandable graphite 38 on the intersecting surface 36 a facing the outside of the bent portion 36.

  Since the joining structure of the saddle member 22 and the intermediate crosspiece 23 is the same at both ends of the intermediate crosspiece 23, here, the joining structure of the saddle member 22 and the intermediate crosspiece 23 on the doorside side will be described.

  As shown in FIG. 4 and FIG. 5, the joint part of the door rod member 22 and the middle rail 23 is inclined 45 degrees so that the upper side of the end portion becomes lower toward the tip end. The crosspiece cut so as to have the same cross section as the cross section of the middle crosspiece 23 cut so as to have an inclination of 45 degrees so that the lower side becomes higher toward the tip and the middle crosspiece 23 cut with the inclination. The material 22 is joined by abutting the cross sections 22i and 23h of each other. At this time, the saddle member 22 is located in a portion where the cross-sectional shape coincides with the middle rail 23, that is, in a portion from the inner peripheral side of the saddle member 22 forming the door toe to the vicinity of the center in the direction of finding the outer hollow portion 22b. It is cut so as to have the same inclination as the tip of the crosspiece 23.

  As shown in FIG. 4, the reinforcing member 30 provided in the outer hollow portion 22b of the saddle member 22 is also notched so that it does not protrude outward from the notch portion 22j in which the saddle member 22 is cut out. The reinforcing member cutout portion 30a is provided. Specifically, the reinforcing member notch portion 30a is formed to be connected to the inner peripheral side facing surface portion 31 and the connecting portion 32, and the inner peripheral side portion is substantially half the width of the connecting portion 32 in the finding direction. The edge is cut out horizontally so that the edge does not reach the inclination of the notch 22j above the upper inclination or below the lower inclination. That is, the edge of the reinforcing member notch 30a of the reinforcing member 30 provided in the bar 22 is located inside the edge of the bar notch 22j of the bar 22 and the reinforcing member 33 provided in the middle rail 23. The edge of is located inside the edge of the middle rail 23. For this reason, when the cross section 23h of the intermediate rail 23 and the cross section 22i of the saddle member 22 are abutted, the reinforcing member 30 provided in the saddle member 22 does not enter the intermediate rail 23 side. The reinforcing member 33 provided in the crosspiece 23 does not enter the brazing material 22 side. That is, the reinforcing member 30 provided on the brazing material 22 as one member has a reinforcing member cutout portion 30a cut out so as not to come into contact with the middle rail 23 as the other member.

  By arranging the reinforcing member 30 in the bar 22 and the reinforcing member 33 in the intermediate bar 23 so as not to protrude from the bar 22 and the intermediate bar 23, the bar 22 and the intermediate bar 23 are welded. In doing so, the reinforcing members 30 and 33 do not come into contact with a heater (not shown) interposed between the brazing material 22 and the intermediate rail 23 in the welded portion. As a result, the heater is reliably brought into contact with the cross section to be joined to the brazing material 22 and the intermediate rail 23 and melted, thereby being firmly welded. At this time, since the reinforcing members 30 and 33 made of iron do not come into contact with the heater, the heat of the heater does not escape from the reinforcing members 30 and 33, and the entire area of the cross section of the bar material 22 and the intermediate rail 23 is melted. .

  Then, after joining the brazing member 22 and the intermediate crosspiece 23, the heat provided in the bent portion 36 of the reinforcing member 33 at the end of the intermediate crosspiece 23 at the joint portion between the brazing material 22 and the intermediate crosspiece 23. The expansive graphite 38 is disposed so as to face the reinforcing member 30 provided on the bar material 22 forming the door end wall with a space therebetween. Then, when the joint portion between the brazing material 22 and the intermediate rail 23 is heated, the thermally expandable graphite 38 of the bent portion 36 reaches the reinforcing member 30 of the brazing material 22 as shown in FIG. And foam so as to straddle the middle rail 23. In FIG. 6, the thermally expandable graphite 38 provided in the connecting portions 32 and 35 of the reinforcing members 30 and 33 is omitted.

  According to the joining structure of the present embodiment, when the door 20 is heated, the thermally expandable graphite 38 provided in the bent portion 36 of the reinforcing member 33 of the intermediate rail 23 is an incombustible iron reinforcing member. Since foaming is carried out between the saddle member 22 provided with 30 and 33 and the intermediate rail 23, the foamed graphite is filled in the joint portion between the saddle member 22 and the intermediate rail 23. For this reason, not only the brazing member 22 and the middle rail 23 provided with the iron reinforcing members 30 and 33 but also the joint portion between the saddle material 22 and the middle rail 23 has a through-hole that penetrates the interior and the exterior. It is possible to prevent.

  Further, the thermally expandable graphite 38 is provided at a bent portion 36 having an intersecting surface 36 a intersecting the longitudinal direction at an end portion in the longitudinal direction of the reinforcing member 33, and protrudes from the reinforcing member 33 in the longitudinal direction. Since the foam expands in the direction, it is possible to foam the heat-expandable graphite 38 more securely between the saddle member 22 and the intermediate rail 23.

  Further, since the thermally expandable graphite 38 provided on the reinforcing member 33 of the intermediate rail 23 is provided so as to foam toward the reinforcing member 30 of the brazing material 22, It is possible to more reliably fill the joined portion between the material 22 and the middle rail 23 with the expanded graphite.

  Further, since the reinforcing members 30 and 33 are provided in a region that does not come into contact with the heater for heating used for welding, the heater can be reliably brought into contact with the brazing material 22 and the intermediate rail 23 for welding. Is possible. Further, when heated by being exposed to a flame or the like, the reinforcing members 30 and 33 are provided, and the inside of the outer hollow portion 22b of the brazing material 22 and the intermediate beam 23 and the inside of the intermediate beam outer hollow portion 23b are also foamed. Since the filled graphite is filled, a through-hole that penetrates the interior and exterior of the brazing material 22 and the intermediate rail 23 is less likely to be generated. For this reason, it is possible to provide higher fire resistance.

  Moreover, according to the joinery 1 of this embodiment, even if it is exposed to a flame by a fire or the like and heated, a through hole hardly occurs, and it is possible to have high fire resistance.

  As in the present embodiment, when the end of the middle rail 23 is abutted and joined to the collar notch 22j in which the side portion of the collar 22 of the collar 22 and the middle rail 23 is cut out, The reinforcing member 30 provided on the bar 22 is notched and provided with a reinforcing member notch 30a and does not come into contact with the end of the middle bar 23, so that the bar notch 22j of the bar 22 and the middle bar 23 It is possible to dispose the heater between the end portions and melt them so that the brazing material 22 and the intermediate rail 23 can be more reliably welded.

  In addition, since the reinforcing members 30 and 33 are formed of an iron plate, it is possible to realize the lightweight and inexpensive reinforcing members 30 and 33 while being a nonflammable metal. Further, since the intersecting surface 36a is a bent portion 36 formed by bending the connecting portion 35 that forms a plane along the longitudinal direction of the reinforcing member 33, the intersecting surface 36a that intersects the longitudinal direction is easily formed. It is possible. At this time, the intersecting surface may be formed by bending from the facing surface portion 34 that forms a plane along the longitudinal direction.

  In the above-described embodiment, foaming toward the reinforcing member notch 30a of the reinforcing member 30 of the reinforcing member 30 occurs in the bent portion 36 of the reinforcing member 33 of the intermediate member 23 at the joint between the reinforcing member 22 and the intermediate member 23. As described above, the example in which the thermally expandable graphite 38 is provided has been described, but the present invention is not limited thereto. For example, as shown in FIG. 7, in the reinforcing member notch 30 a of the reinforcing member 30 of the saddle member 22, the connecting portion 32 of the reinforcing member 30 faces the bent portion 36 of the reinforcing member 33 of the intermediate rail 23. The facing portion 32a may be provided, and the thermally expansive graphite 38 may be provided on the facing portion 32a and the bent portion 36 of the reinforcing member 30 of the saddle member 22 and the reinforcing member 33 of the intermediate rail 23 that face each other. In this case, the graphite that is heated and foamed from both sides can be filled between the facing portion 32a and the bent portion 36, so that the graphite can be reliably connected between the bar 22 and the intermediate rail 23. It is possible to provide higher fire resistance.

  Further, as shown in FIG. 8, in the reinforcing member cutout portion 30 a of the reinforcing member 30 of the saddle member 22, the upper end portion and the lower end portion of the connecting portion 32 of the reinforcing member 30 that are notched are bent. Alternatively, the mutual facing portions 32b facing each other may be provided, and the thermally expandable graphite 38 may be provided on each of the mutual facing portions 32b. In this case, when heated, the thermally expansive graphite 38 is foamed from the three directions at the joint portion between the brazing material 22 and the middle rail 23, so at the joint portion between the brazing material 22 and the middle rail 23. It is possible to connect graphite more reliably and to have higher fire resistance.

  In the above embodiment, the reinforcing members 30 and 33 are made of iron. However, the present invention is not limited to this. For example, the non-flammable reinforcing member such as a metal such as stainless steel, or the non-flammable material is first exposed to fire. A flame retardant reinforcing member 40 such as MDF, wood, or the like may be provided, which can delay the carbonization of the carbonized material and delay the internal combustion due to the heat insulating effect of the carbonized surface. In this case, as shown in FIG. 9A, it is possible to directly provide the heat-expandable graphite 38 at the small edge of the reinforcing member 40 such as MDF.

  Further, the thermally expandable graphite 38 is nonflammable that is screwed to the end portion of the nonflammable reinforcing member 41 having a U-shaped cross section or a square pipe shape as shown in FIGS. 9B and 9C. It may be attached to the metal piece 42 or the flame-retardant block member 43, or attached to the end of the non-flammable reinforcing member via an aluminum tape (not shown) or the like.

  Moreover, in the said embodiment, although the junction part of the eaves member 22 and the middle crosspiece 23 was demonstrated, in the case of the joining structure of eaves member 22 to comprise the enclosure 21, as shown in FIG. Each of the brazing materials 22 is cut at a predetermined length and the end is cut at 45 degrees, and the cross sections thereof are butted and welded. Also in this case, in the reinforcing member 30 provided in the outer hollow portion 22 b and provided with the heat-expandable graphite 38, the heat-expandable graphite 38 is disposed inside the edge of the brazing material 22. Further, as shown in the drawing, bent portions 36 are provided at the end portions of the reinforcing members 30 provided on the respective brazing members 22, and thermally expandable graphite 38 is provided on the intersecting surfaces 36 a of the respective bent portions 36. Thus, when heated, the thermally expandable graphite 38 provided in the bent portion 36 of the reinforcing member 30 of each brazing material 22 at the joint between the brazing materials 22 faces each other toward the other brazing material 22. Therefore, it is possible to connect the joint portions of the brazing materials 22 with the expanded graphite. At this time, the heat-expandable graphite 38 provided in the bent portion 36 of each brazing material 22 foams so as to reach the reinforcing member 30 provided in the other brazing material 22. It can be said that each is foaming. Further, at this time, the bendable portion 36 may be provided on only one of the reinforcing members 30 provided on the respective brazing members 22 and the thermally expandable graphite 38 may be provided. In this case, for example, as shown in FIG. 11, the end 30b of the reinforcing member 30 provided on the other saddle member 22 is cut at 45 degrees in the same manner as the saddle member 22, or as shown in FIG. It is desirable to provide the extended portion 30c by extending the facing surface portion 31 located on the outer peripheral side of the reinforcing member 30 provided on the brazing material 22. As described above, when the reinforcing member 30 of the other brazing material 22 is formed so as to face the thermally expandable graphite 38 provided in the bent portion 36 of the reinforcing member 30 of the one brazing material 22, foaming is performed. Since the one reinforcing member 30 and the other reinforcing member can be connected with the graphite, it is possible to have high fire resistance.

  In the said embodiment, although the joinery provided with the door 20 was mentioned as an example and demonstrated, it is not restricted to this, What is necessary is just a joinery which has the member which butt | matches and joins the members made from a synthetic resin.

  In the above-described embodiment, the example in which the two members to be joined, that is, the saddle member 22 and the intermediate rail 23 both have a hollow portion penetrating in the longitudinal direction has been described, but the present invention is not limited thereto. For example, if it is a member which has the hollow part by which the site | part side joined mutually is open | released, the hollow part does not necessarily need to penetrate the longitudinal direction.

  In addition, a part of the hollow part of the two members to be joined is closed by a closed part or a closed member that is more easily melted than other parts, and when heated, the closed part melts or is packed. The closed member that has been contracted may be communicated between the two members, and the thermally expandable graphite may be foamed between the two members. In this case, it is desirable that a portion serving as a welding allowance is provided on the joint portion side from the closing portion and the closing member.

  In the above embodiment, the heat-expandable refractory material is the heat-expandable graphite 38. However, the heat-expandable graphite 38 is not limited to the heat-expandable graphite 38 as long as it is heated and expands.

  In the said embodiment, although the example which was set as the laminated glass 3 which formed two glass plates facing each other with a space | interval and was integrally formed was demonstrated in the said embodiment, a glass material space | intervals three or more plate glass mutually. It may be formed integrally by facing each other. Further, the combination of plate glasses constituting the glass material is not limited to the low reflection glass and the netted glass, and may include a float glass.

  In addition, the said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. The present invention can be changed and improved without departing from the gist thereof, and it is needless to say that the present invention includes equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Joinery, 10 frame, 11 frame material, 11a hollow part, 20 door, 21 housing,
22 Fence, 22b Outer hollow part, 22i Cross section of Fence, 23 Middle rail,
23b hollow part outside the middle rail, 30 reinforcing member, 32a facing part,
32b mutual facing part, 33 reinforcing member, 36 bent part, 36a crossing surface,
38 Thermally expandable graphite

Claims (8)

Two members made of synthetic resin having a hollow portion are provided with a nonflammable or flame retardant reinforcing member in each of the hollow portions, and the members are abutted and welded to each other,
At least one of the two members is provided with a thermally expandable refractory material that foams across the two members when heated. The joint structure according to claim 1,
The reinforcing member has a portion having an intersecting surface intersecting the longitudinal direction at an end in the longitudinal direction of the reinforcing member ,
The joint structure according to claim 1, wherein the thermally expandable refractory material is provided on the intersecting surface so as to foam in a direction protruding in the longitudinal direction from the reinforcing member. The joint structure according to claim 1 or 2,
The thermally expandable refractory material is provided on one of the reinforcing members of the two members, and is provided so as to foam toward the other reinforcing member. To join structure. The joint structure according to any one of claims 1 to 3,
The two reinforcing members of each of the two members each have facing portions facing each other, and the thermally expandable refractory material is provided on the facing portions. The joint structure according to any one of claims 1 to 4 ,
Before SL reinforcing member is provided in a region not in contact with the heater for welding,
The joining structure, wherein the reinforcing member is provided with the thermally expandable refractory material over the entire area. The joint structure according to claim 2 ,
Junction structure wherein the reinforcing member, the is formed of a plate-like metal having a longitudinal direction along the plane, the intersection surface, characterized in that the portion forming a plane along the longitudinal direction it has caused bending . The joint structure according to any one of claims 1 to 6,
The two members are joined to the portion where the side portion of one member is cut out by abutting the end portion of the other member,
The joining structure, wherein the reinforcing member provided in the one member is cut out so as not to contact the other member.   A joinery comprising a frame or a frame joined by the joining structure according to any one of claims 1 to 7.

Images