JP2016113770A - Fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fitting that mitigates deformation of a frame member while suppressing increase in cost and weight.SOLUTION: A lower frame member 32b of a fitting 10 has the following elements formed thereon: an opening groove 62 extending in a longer-side direction of the lower frame member 32b, the opening groove having a rail 26 inserted therein and coming in contact with a sash roller 70; and a pair of protruded pieces 71a, 71b protruding from opposing wall surfaces of a pair of wall parts 62a, 62b, which form side walls of the opening groove 62, in an opposite direction, at a location above a position where the rail 26 comes in contact with the sash roller 70, the protruded pieces extending in the longer-side direction of the lower frame member 32b for holding a thermally expansive member 65 on a top surface thereof. The pair of protruded pieces 71a, 71b has a gap D1 formed between their opposing tips, for having the rail 26 inserted therein. The gap D1 is formed to be smaller than a gap D2 between the opposing wall surfaces of the pair of wall parts 62a, 62b.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a joinery in which a shoji is slidable with respect to an opening frame by a door wheel provided on a lower arm.

  Conventionally, a door is provided on the lower arm of a shoji that holds a face material such as a glass plate or a resin plate, and the shoji is moved with respect to the opening frame by rolling the door along a rail protruding upward from the lower frame. Joiners that are slidable are widely used.

  For example, Patent Document 1 discloses a fitting having a configuration in which an opening groove extending in the longitudinal direction is provided in the lower arm of a shoji, and a rail of a lower frame and a resin door are brought into contact with the inside of the opening groove. It is disclosed. In this joinery, a heat-expandable member is provided inside the opening groove of the lower roof for fire prevention measures when the joinery receives a flame such as a fire or heat.

JP 2012-225149 A

  By the way, in the structure of the said patent document 1, since the thermally expansible member is stuck inside the opening groove | channel of the lower eyelid opened toward the downward direction, a thermally expansible member may peel off. Furthermore, since it is necessary to stick a thermally expansible member over the full length of a lower arm, labor and cost become large.

  Moreover, the resin door roller provided in the joinery of the said patent document 1 may burn out at the time of a fire. As a result, the shoji will sink down as much as there is no door wheel, and the bottom surface of the opening groove of the lower arm will be directly on the rail. As a result, when the lower arm is directly subjected to heat from the lower frame in addition to heat from the flame, the lower arm itself is severely damaged, causing deformation of the member, and the entire shoji is greatly warped in the expected direction. There are also concerns that arise. In addition, although the gap between the heel and the frame is closed by the thermally expandable member, if excessive member warp occurs, a new gap may be formed, which may impair the flame shielding performance between the heel and the frame. There is. Further, the excessively warped member may cause the attached thermally expandable member to peel off from the ridge. In order to reduce the amount of warp of the lower arm, it is conceivable to increase the thickness of the lower arm or arrange a reinforcing material such as steel extending in the longitudinal direction inside the lower arm. There is a problem that the cost and weight increase.

  The present invention has been made in consideration of the above-described problems of the prior art, and an object of the present invention is to provide a joinery that can reduce deformation of the heel while suppressing an increase in cost and weight.

  In the fitting according to the present invention, the sliding door is made to contact the rail protruding upward from the lower frame of the opening frame so that the resin door wheel provided on the lower arm of the sliding screen can roll, so that the sliding frame is brought into contact with the opening frame. The lower arm is extending along the longitudinal direction of the lower arm, and an opening groove in which the rail is inserted to contact the door wheel, the rail and the door wheel Projecting in opposite directions from the opposing wall surfaces of the pair of wall portions serving as the side walls of the opening groove, and extending along the longitudinal direction of the lower collar, A pair of projecting pieces for holding a thermally expandable member on an upper surface, and the pair of projecting pieces is provided with a gap into which the rail can be inserted between the tips facing each other, and the gap between the tips is the pair. Smaller than the gap between the opposing wall surfaces of the wall And said that no.

  According to such a structure, a thermally expansible member is hold | maintained by a pair of protrusion piece provided in the inner side of the opening groove | channel of the lower collar. Thereby, since a thermally expansible member can be arrange | positioned only by mounting a thermally expansible member on the upper surface of these protrusion pieces, compared with the case where a thermally expansible member is stuck with an adhesive etc. Can save time and money. Furthermore, since the heat-expandable member can be reliably held inside the opening groove by the protruding piece, the heat-expandable member does not peel off. In addition, if the resin door roller burns down and the shoji board sinks down when the joinery receives heat from a fire or the like, the thermally expandable member is sandwiched between the lower and lower frames. Direct heat transfer to the ham is hindered, and damage to the lower arm can be suppressed. And since the thermally expansible member expand | swells in the state pinched | interposed between the lower eyelid and the lower frame, the clearance gap between an eyelid and a frame can be block | closed reliably. Furthermore, the rail which protruded upwards from the lower frame when the shoji screen sinks down is squeezed between the pair of protruding pieces. As a result, even if the shoji is warped and deformed in the expected direction due to heat, the protruding piece having an opening width narrower than the opening of the opening groove abuts on the rail, and further warping is restricted. The amount can be reduced. In addition, when the wall of the opening groove or the protruding piece is deformed by the expansion force of the thermally expandable member, the amount of the rail squeezed by the protruding piece increases. Warp deformation of the heel can be more reliably suppressed.

  In the joinery according to the present invention, when the thermally expandable member is disposed at the bottom of the opening groove by being held by the pair of projecting pieces, the gap between the lower heel and the lower frame is further expanded during expansion. It can be surely closed, and damage to the lower arm can be further suppressed.

  In the fitting according to the present invention, another thermally expandable member may be provided on at least the wall surface of the wall portion on the indoor side of the pair of wall portions serving as the side walls of the opening groove. If it does so, it will become possible to block | close the clearance gap between a lower cage | basket and a lower frame by this another thermally expansible member without a leak further. In addition, since the wall portion of the opening groove is deformed also by the expansion force of the other thermally expandable member, the amount of the rail squeezed by the protruding piece is further increased, and the warp deformation of the lower heel can be further suppressed.

  According to the present invention, since the heat-expandable member is held by the pair of projecting pieces provided inside the opening groove of the lower arm, it is possible to suppress labor and cost required for the installation, and prevent the heat-expandable member from peeling off. it can. Furthermore, when the door is made of fire and the resin door is burnt down and the shoji screen sinks down, a thermally expansible member is sandwiched between the lower arm and the lower frame. Damage can be suppressed. Further, when the shoji is sunk down, the rail projecting upward from the lower frame is squeezed between the pair of projecting pieces and interferes with each other, so that the amount of warping in the expected direction of the shoji can be reduced.

Drawing 1 is a front view which looked at the fitting concerning one embodiment of the present invention from the indoor side. FIG. 2 is a longitudinal sectional view of the joinery shown in FIG. FIG. 3 is a cross-sectional view of the joinery shown in FIG. FIG. 4 is an enlarged vertical sectional view of a main part showing the structure of the lower arm, FIG. 4 (A) is a diagram showing a normal state, and FIG. 4 (B) is a thermal expansion provided in the opening groove. It is a figure which shows the state which the sex member expanded at the time of a fire. FIG. 5 is an explanatory plan view schematically showing warp deformation of the lower arm, and FIG. 5A is a diagram illustrating the amount of warpage in a structure in which no protruding piece is provided in the opening groove. (B) is a figure which illustrates the amount of curvature in the structure which provided the projection piece in the opening groove.

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

  FIG. 1 is a front view of a joinery 10 according to an embodiment of the present invention viewed from the indoor side. 2 is a longitudinal sectional view of the joinery 10 shown in FIG. 1, and FIG. 3 is a cross-sectional view of the joinery 10 shown in FIG.

  As shown in FIGS. 1 to 3, the joinery 10 includes an opening frame 12 that is fixed to a building opening of a building, and a pair of left and right shojis 14 and 15 that are slidably disposed inside the opening frame 12. Prepare. In the present embodiment, a sliding window joinery 10 that can open and close the inner opening of the opening frame 12 by sliding the shojis 14 and 15 is illustrated. The shojis 14 and 15 may be configured such that one of the shojis 14 is killed by the opening frame 12 and only the other slides, and the number of shojis installed can be changed as appropriate.

  The opening frame 12 is a rectangular opening formed by quadrangling an upper frame 12a, a lower frame 12b, and left and right vertical frames 12c and 12d. In the present embodiment, as the opening frame 12, a frame having a composite structure in which a metal frame 18 disposed on the outdoor side and a resin frame 20 disposed on the indoor side are combined is used (FIGS. 2 and 3). reference). The metal frame 18 is a metal extruded shape such as aluminum. The resin frame 20 is an extruded shape of a resin such as vinyl chloride resin (PVC).

  The upper frame 12 a is obtained by assembling the upper frame portion 20 a of the resin frame 20 to the upper frame portion 18 a of the metal frame 18. The lower frame 12 b is obtained by assembling the lower frame portion 20 b of the resin frame 20 to the lower frame portion 18 b of the metal frame 18. The vertical frames 12c and 12d are obtained by assembling the vertical frame portions 20c and 20d of the resin frame 20 to the vertical frame portions 18c and 18d of the metal frame 18, respectively. The opening frame 12 is fixed to the building frame using a fixing screw 21.

  As shown in FIG. 2, on the prospective surface of the upper frame 12a, a rail 22 for slidably guiding an outdoor shoji 14 serving as an external shoji and a indoor shoji 15 serving as an internal shoji are slidably guided. The rail 23 is formed so as to protrude in the indoor / outdoor direction. The rails 22 and 23 extend over the entire length of the upper frame 12a. A windbreak plate 24 is provided at a position between the rails 22 and 23 of the upper frame 12a and corresponding to the summing part of the shojis 14 and 15 to maintain airtightness inside and outside the room. On the prospective surface of the upper frame 12a, the thermally expandable members 25 are provided at two locations along the longitudinal direction. The thermally expandable member 25 is a heated foam material such as graphite that expands when heated, for example.

  As shown in FIG. 2, a rail 26 for slidably guiding the shoji 14 and a rail 27 for slidably guiding the shoji 15 are formed on the prospective surface of the lower frame 12b so as to be aligned in the indoor / outdoor direction. ing. The rails 26 and 27 extend over the entire length of the lower frame 12b. The windshield plate 24 and the thermally expandable member 25 are also provided on the lower frame 12b.

  As shown in FIG. 3, a fin portion 29 protrudes from the prospective surface of the vertical frame 12 c at a position corresponding to the closed shoji 14. On the prospective surface of the vertical frame 12d, a fin portion 30 is formed to project at a position corresponding to the closed shoji 15. The fin parts 29 and 30 extend over the entire length of the vertical frames 12c and 12d.

  As shown in FIG. 1 to FIG. 3, the shoji 14 on the outdoor side has an upper face 32a, a lower face 32b, a door end face 32c, and a summoning face 32d that form a box 32 that surrounds the four sides, and a surface disposed on the inside. The material 34 is assembled and assembled.

  The face material 34 is a double-layer glass in which a pair of glass plates 36 and 37 are arranged to face each other with a space therebetween via a spacer 35. In the case of this embodiment, the glass plate 36 arranged on the outdoor side is a thick plate glass with a net, and the glass plate 37 arranged on the indoor side is a thin float glass.

  As shown in FIGS. 2 and 3, the casing 32 is configured by combining a metal casing 38 disposed on the outdoor side and a resin casing 40 disposed on the indoor side. The metal rod 38 is an extruded shape of a metal such as aluminum. The resin basket 40 is an extruded shape of a resin such as vinyl chloride resin (PVC).

  The upper collar 32a is obtained by mounting the upper collar 40a of the resin collar 40 on the indoor-side finding surface of the upper collar 38a of the metal collar 38, and the upper edge of the face member 34 between the upper collars 38a, 40a. Holding. The lower collar 32b is obtained by mounting the lower collar 40b of the resin collar 40 on the indoor-side finding surface of the lower collar 38b of the metal collar 38, and the lower edge of the face member 34 between the lower collars 38b and 40b. Holding. The door end fence 32c is obtained by mounting the door end flange 40c of the resin fence 40 on the indoor-side finding surface of the door edge flange 38c of the metal fence 38, and the face material 34 between the door tip flanges 38c and 40c. The edge of the door side is held. The summoning bar 32d is obtained by mounting the summing bar 40d of the resin bar 40 on the indoor side of the summing bar 38d of the metal bar 38, and the face material 34 between the summing bar 38d and 40d. Holding the side edge of the summons.

  As shown in FIG. 2, the upper flange 32a has an opening groove 42 into which the rail 22 is slidably inserted in the upper prospective surface, and a face material arrangement groove 44 in which the face material 34 is arranged on the lower side. Have prospects. The opening groove 42 and the face material arrangement groove 44 extend over the entire length of the upper collar 32a, and a hollow portion 46 is formed between them. The opening groove 42 and the hollow part 46 are formed in the upper collar part 38 a of the metal collar 38. The face material arrangement groove 44 includes an upper flange portion 38 a of the metal rod 38 and an upper flange portion 40 a of the resin rod 40. The face material 34 is adhered to the upper collar portion 38a by the adhesive 47 in the face material arrangement groove 44, and is sandwiched and held between the upper collar portion 38a and the upper collar portion 40a.

  Thermally expandable members 25 are provided at the bottom of the opening groove 42 facing the tip of the rail 22 and at the bottom of the face material arrangement groove 44 facing the upper edge of the face material 34.

  The upper collar portion 40a of the resin collar 40 is engaged and fixed to the indoor-side finding surface of the upper collar section 38a of the metal collar 38. A drop prevention metal fitting 54 is attached by screws 56 to the upper collar portion 38a of the metal collar 38 that is inside the upper collar portion 40a of the resin collar 40. The drop-off prevention metal fitting 54 is a stepped part formed by bending and deforming a metal plate such as stainless steel or steel, and is a metal fitting for preventing the face material 34 from dropping off from the upper rod 32a in the event of a fire.

  As shown in FIG. 2, the lower rod 32 b has an opening groove 62 into which the rail 26 is inserted in the lower prospective surface, and a face material arrangement groove 64 in which the face material 34 is arranged in the upper prospective surface. . The opening groove 62 and the face material arrangement groove 64 extend over the entire length of the lower collar 32b, and a hollow portion 66 is formed between them. The opening groove 62 and the hollow portion 66 are formed in the lower flange portion 38 b of the metal rod 38. The face material arrangement groove 64 includes a lower flange portion 38b of the metal rod 38 and a lower flange portion 40b of the resin rod 40. The face material 34 is adhered to the lower collar part 38b with the adhesive 47 in the face material arrangement groove 64, and is sandwiched and held between the lower collar part 38b and the lower collar part 40b.

  A heat-expandable member 65 is provided at the bottom of the opening groove 62 facing the front end surface of the rail 26, and a heat-expandable member 67 is provided at the indoor side of the opening groove 62. In addition, the thermally expandable member 25 is provided at the bottom of the face material arrangement groove 64 facing the lower edge of the face material 34, and the thermally expandable member 25 is also disposed on the outdoor wall surface of the hollow portion 66. Yes. The thermally expandable members 65 and 67 are the same as the thermally expandable member 25, and are, for example, a heated foam material such as graphite that expands when heated.

  The lower flange portion 40b of the resin rod 40 is engaged and fixed to the indoor-side finding surface of the lower flange portion 38b of the metal rod 38. A drop-off prevention metal fitting 54 is attached to the lower collar portion 38b of the metal collar 38 that is inside the lower collar portion 40b of the resin collar 40. The drop-off prevention metal fitting 54 has the same structure as that attached to the upper collar 32a except that it has a vertically symmetrical structure.

  A setting block 68 that supports the end surface of the lower edge of the face material 34 is disposed in the face material arrangement groove 64. The setting block 68 is obtained by providing a heated foam material such as graphite on the surface of a metal block such as aluminum.

  A resin door wheel 70 is disposed on the lower collar 38 b of the metal cage 38. The door pulley 70 is a roller that smoothly slides the shoji 14 with respect to the opening frame 12 by rolling on the front end surface of the rail 26. Most of the door wheel 70 is disposed in the hollow portion 66, while its lower outer peripheral edge portion is disposed in the opening groove 62 through a notch formed in the lower wall 66 a of the hollow portion 66. It abuts on the front end surface of the rail 26 inserted into the groove 62 so as to be able to roll.

  FIG. 4 is an enlarged vertical cross-sectional view of the main part showing the structure of the lower rod 32b, FIG. 4 (A) is a diagram showing a normal state not affected by a fire, and FIG. It is a figure which shows the state which the thermally expansible members 65 and 67 provided in the opening groove | channel 62 expanded at the time of a fire.

  As shown in FIGS. 2 and 4A, inside the opening groove 62, a pair of projecting pieces 71a projecting in opposite directions from the mutually opposing inner wall surfaces of the pair of wall portions 62a, 62b serving as the side walls thereof. , 71b. The protruding pieces 71a and 71b are horizontal rail-shaped fins extending along the longitudinal direction of the lower collar 32b. Of the walls 62a and 62b, the wall 62a on the outdoor side is configured to be thicker than the wall 62b in order to ensure sufficient rigidity to withstand, for example, a fire on the outdoor side.

  The protruding pieces 71a and 71b are provided at positions above the contact position between the rail 26 and the door wheel 70 at the normal time shown in FIG. The projecting pieces 71a and 71b are provided, for example, between the lower wall 66a of the hollow portion 66 serving as the bottom surface of the opening groove 62 with a height H1. The distance D1 between the tips of the projecting pieces 71a and 71b facing each other is set to a dimension that is smaller than the minimum distance D2 between the walls 62a and 62b of the opening groove 62 and into which the rail 26 can be inserted. . Since the projecting pieces 71a and 71b are above the contact position between the rail 26 and the door wheel 70, the position of the shoji 14 in the height direction is changed by the door wheel 70 during normal use without being affected by heat such as fire. Because it is regulated, it does not affect its opening and closing.

  A flat pocket-shaped space (hereinafter referred to as “pocket P”) along the longitudinal direction of the lower collar 32b is formed at the bottom of the opening groove 62 by the protruding pieces 71a and 71b and the lower wall 66a. The thermally expandable member 65 disposed at the bottom of the opening groove 62 is disposed in the pocket P. That is, the thermally expandable member 65 is inserted into the pocket P from one end side in the longitudinal direction of the lower collar 32b to the other end side, and is held across the upper surfaces of the projecting pieces 71a and 71b. Thereby, the thermally expansible member 65 is arrange | positioned in the bottom part of the opening groove | channel 62 in the state in which the downward fall was prevented reliably. Moreover, since it is not necessary to stick the thermally expansible member 65 with respect to the lower wall 66a which comprises the bottom part of the opening groove | channel 62, the installation operation | work is easy.

  As shown in FIG. 3, the door toe bar 32 c has an opening groove 72 in the prospective surface on the door tip side, and has a face material arrangement groove 74 in which the face material 34 is arranged on the prospective surface on the summing side. The opening groove 72 and the face material arrangement groove 74 extend over the entire length of the door rod 32c, and a hollow portion 76 is formed therebetween. The opening groove 72 and the hollow portion 76 are formed in the door-end flange portion 38 c of the metal rod 38. The face material arrangement groove 74 is configured by a door-end flange portion 38 c of the metal rod 38 and a door-end flange portion 40 c of the resin rod 40. The face material 34 is bonded to the door end collar 38c with the adhesive 47 in the face material arrangement groove 74, and is sandwiched and held between the door tip collar 38c and the door end collar 40c. . The opening groove 72 is a portion into which the fin portion 29 of the vertical frame 12c is inserted in a state in which the shoji 14 is closed.

  One or a plurality of thermally expandable members 25 are disposed inside the opening groove 72, the face material arrangement groove 74, and the hollow portion 76, respectively.

  The door end flange 40c of the resin rod 40 is engaged and fixed to the indoor-side finding surface of the door tip flange 38c of the metal rod 38. A drop-off prevention metal fitting 54 is attached to the door-end flange portion 38c of the metal rod 38 that is inside the door-end flange portion 40c of the resin rod 40. The drop-off prevention metal fitting 54 has a substantially similar structure to that attached to the upper collar 32a.

  As shown in FIG. 3, the summoning bowl 32d has a face material arrangement groove 84 in which the face material 34 is arranged on the prospective surface on the door-end side. The face material arrangement groove 84 extends over the entire length of the summoning bowl 32d, and a hollow portion 86 is formed on the side thereof. The hollow portion 86 is formed in the summoning collar portion 38 d of the metal collar 38. The face material arrangement groove 84 includes a summing collar portion 38d of the metal collar 38 and a summing collar portion 40d of the resin collar 40. The face material 34 is adhered to the summoning collar portion 38d by the adhesive 47 in the face material arranging groove 84, and is sandwiched and held between the summing collar portion 38d and the summing collar portion 40d. .

  One or a plurality of thermally expandable members 25 are disposed inside the face material arrangement groove 84 and the hollow portion 86, respectively. In the hollow part 86, the thermally expansible member 25 is arrange | positioned also in the outer surface. The summing collar portion 40d of the resin collar 40 is engaged and fixed to the indoor-side finding surface of the summing collar portion 38d of the metal collar 38.

  As shown in FIGS. 2 and 3, the indoor shoji 15 is slidable relative to the outdoor shoji 14 between the rail 23 of the upper frame 12a and the rail 27 of the lower frame 12b. The configuration is almost the same as that of the shoji 14. Therefore, for the shoji 15, the same reference numerals are given to the constituent elements corresponding to the constituent elements of the shoji 14 described above, and detailed description thereof is omitted.

  It should be noted that the summoning rod 32d of the shoji 15 and the summoning rod 32d of the shoji 14 can be locked by the crescent 88, whereby the shoji 14 and 15 are held in the closed state. The opening groove 72 of the door rod 32c is a portion into which the fin portion 30 of the vertical frame 12d is inserted in a state where the shoji 15 is closed.

  Next, the effect | action of the fitting 10 comprised as mentioned above is demonstrated.

  As shown in FIG. 4 (A), when the door wheel 70 provided on the lower arm 32b of the shoji 14 (15) is placed on the front end surface of the rail 26 (27), for example, When the joinery 10 receives heat, the resin door roller 70 provided on the lower roof 32b may be melted or burnt down. Then, the shoji 14 sinks downward as shown in FIG. 4B because the door wheel 70 is eliminated, and the tip of the rail 26 is swallowed into the pocket P at the bottom of the opening groove 62 formed by the protruding pieces 71a and 71b. .

  Accordingly, in the case of a structure in which the protruding pieces 71a and 71b are not provided on the lower collar 32b, when the lower collar 32b is warped and deformed in the expected direction by heat as shown in FIG. For example, when the warp amount W1 is warped, the wall portion 62b of the opening groove 62 comes into contact with the rail 26, and its deformation is restricted. The rail 26 (lower frame 12b) is not deformed because it is fixed to the housing, and therefore the rail 26 can receive the warp of the lower rod 32b. On the other hand, in the case of the structure of the present embodiment, as shown in FIG. 5B, when the lower collar 32b warps and deforms in the expected direction due to heat, the lower collar 32b warps, for example, smaller than the warpage amount W1. The protruding piece 71b protruding from the wall portion 62b of the opening groove 62 when it is warped to the amount W2 comes into contact with the rail 26 and its deformation is restricted. Thus, in the fitting 10, by providing the projecting pieces 71a and 71b, the amount of warp of the lower rod 32b can be reduced. 5A and 5B, the lower eyelid 32b before warping deformation is illustrated by a two-dot chain line, and the lower eyelid 32b after warping deformation is illustrated by a solid line.

  Further, when the door roller 70 is burnt down and the shoji 14 sinks down, the thermally expandable member 65 disposed in the pocket P is sandwiched between the lower rod 32b and the lower frame 12b (rail 26) ( (See FIG. 4B). At this time, in the joinery 10 according to the present embodiment, the thermally expandable members 65 and 67 disposed in the opening groove 62 are expanded at the timing before and after the door wheel 70 is burnt out (reference numeral in FIG. 4B). (See the thermally expandable members shown at 65a and 67a). The thermally expandable member 65 expands while being sandwiched between the lower collar 32b and the lower frame 12b (rail 26). Thereby, the inside of the opening groove | channel 62 is obstruct | occluded by the thermally expansible member 65a, 67a which expanded. At the same time, among the wall portions 62a and 62b forming the opening groove 62 by the expansion pressure of the thermally expandable members 65 and 67, the wall portion 62b on the indoor side of the thin structure receives a pressing force from the inside, and FIG. As shown, it is deformed so as to be pushed outward.

  Then, the protruding piece 71b protruding inward from the inner wall surface of the wall portion 62b is deformed so that the tip thereof faces downward. At the same time, since the protruding pieces 71a and 71b themselves receive the expansion force of the thermally expandable member 65, the protruding piece 71b protruding inward from the inner wall surface of the wall portion 62a is also deformed so that the tip thereof faces downward. As a result, the height from the lower wall 66a of the hollow portion 66 serving as the bottom surface of the opening groove 62 to the projecting pieces 71a and 71b becomes a height H2 larger than the normal height H1. That is, because the wall portion 62b of the opening groove 62 and the projecting pieces 71a and 71b are deformed by the thermally expandable members 65 and 67, the pocket P that can swallow the rail 26 by the height H1 before the deformation is deformed. Later, the rail 26 has a shape that can be swollen by a height H2 larger than the height H1. Thereby, since the insertion amount (approach amount) to the pocket P (projection piece 71a, 71b) of the rail 26 becomes large, the rail 26 can be more reliably pressed down by the projection piece 71a, 71b.

  As described above, in the joinery 10 according to the present embodiment, the lower barb 32b extends along the longitudinal direction thereof, the opening groove 62 into which the rail 26 (27) is inserted and comes into contact with the door wheel 70, and the rail 26 (27 ) And the door wheel 70 at a position above the abutment position of the door groove 70, the pair of wall portions 62 a and 62 b that serve as the side walls of the opening groove 62 protrude in opposite directions from the opposing wall surfaces, and in the longitudinal direction of the lower collar 32 b. By extending along the upper surface, a pair of projecting pieces 71a and 71b for holding the thermally expandable member 65 is provided on the upper surface thereof. Here, the pair of projecting pieces 71a and 71b is provided with a gap D1 into which the rail 26 (27) can be inserted between the opposed tips, and the gap D1 is a wall surface of the pair of wall portions 62a and 62b facing each other. The gap is smaller than the gap D2.

  Thus, in the joinery 10, the heat-expandable member 65 is held by the pair of protruding pieces 71a and 71b provided inside the opening groove 62 of the lower rod 32b. Accordingly, the thermal expansion member 65 can be disposed in the opening groove 62 that opens downward by simply disposing the thermal expansion member 65 between the upper surfaces of the pair of projecting pieces 71a and 71b. Compared with the case where the thermally expansible member 65 is stuck, etc., effort and cost can be suppressed. Furthermore, in the joinery 10, since the heat-expandable member 65 can be reliably held at the bottom of the opening groove 62 by the protruding pieces 71a and 71b, the heat-expandable member 65 is not peeled off. Further, when the resin door wheel 70 is burned down when the joinery 10 receives heat such as a fire and the shojis 14 and 15 sink down, the thermally expandable member 65 is moved to the lower frame 32b and the lower frame 12b (rails 26 and 26). 27), the movement of the amount of heat directly from the lower frame 12b to the lower rod 32b is hindered, and damage to the lower rod 32b can be suppressed. In addition, since the thermally expandable member 65 expands in a state of being sandwiched between the lower collar 32b and the lower frame 12b, the gap between the lower collar 32b and the lower frame 12b can be reliably closed.

  When the resin door is burnt down and the shoji 14 (15) sinks down, the rail 26 (27) protruding upward from the lower frame 12b is swallowed between the pair of protruding pieces 71a and 71b. As a result, when the shoji 14 (15) is warped and deformed in the expected direction due to heat, the projecting pieces 71a and 71b having an interval D1 having an opening width narrower than the interval D2 of the opening groove 62 are applied to the rail 26 (27). Since the warpage beyond that in contact is restricted, the amount of warpage can be reduced as compared with the case where the protruding pieces 71a and 71b are not provided. At this time, in the joinery 10, the wall portion 62b of the opening groove 62 and the protruding pieces 71a and 71b are deformed by the expansion force of the thermally expandable member 65, and the amount of stagnation of the rail 26 (27) by the protruding pieces 71a and 71b increases. . For this reason, the applied amount of the rail 26 (27) to the protruding pieces 71a and 71b is increased, and the warp deformation of the lower rod 32b can be more reliably suppressed.

  In the joinery 10, since the amount of warping of the member can be reduced by the abutting action between the projecting pieces 71a and 71b and the rail 26 (27), it is not necessary to arrange a reinforcing material such as steel inside the lower barb 32b. Since it is not necessary to increase the thickness of the lower collar 32b, the cost and weight can be reduced. Moreover, since it is not necessary to provide the thermally expansible member 65 in the lower frame 12b side, it does not affect the drainage property in the lower frame 12b.

  By the way, the lower wall 66a which becomes the bottom of the opening groove 62 is provided with a notch for passing the door wheel 70 through the portion corresponding to the door wheel 70 as described above. For this reason, the thermally expandable member 65 disposed at the bottom of the opening 62 needs to be disposed avoiding this notch. In other words, the heat-expandable member 65 cannot be provided at the bottom of the opening groove 62 in the portion where the door wheel 70 is disposed, and the lower arm 32b and the lower frame in the portion where the heat-expandable member 65 cannot be disposed in the event of a fire. There is a concern that the gap with 12b cannot be sufficiently closed. Therefore, in the joinery 10, by providing the thermally expandable member 67 on the inner wall surface of the indoor wall portion 62b of the opening groove 62, it is possible to reliably prevent the occurrence of the gap even when the door wheel 70 is melted. It has become a structure. The thermally expandable member 67 may be provided on the inner wall surface of the wall portion 62a that is the outdoor side portion of the opening groove 62, or may be provided on both the wall portions 62a and 62b. Further, since the wall 62b of the opening groove 62 is also deformed by the expansion force of the thermally expansible member 67, the amount of squeezing of the rail by the protruding pieces 71a and 71b further increases, and the warp deformation of the lower rib 32b is further suppressed. it can.

  It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that the present invention can be freely changed without departing from the gist of the present invention.

  For example, in the above-described embodiment, the composite sash in which the opening frame 12 and the housing 32 are made of a composite structure of aluminum and resin is illustrated. However, the joinery 10 may be applied to an aluminum sash having the opening frame 12 and the housing 32 made of aluminum. Applicable.

  In the above-described embodiment, the configuration in which the pair of projecting pieces 71a and 71b are projected from the inner wall surfaces of the pair of wall portions 62a and 62b that form the opening groove 62, and the thermally expandable member 65 is held by these. However, in addition to this configuration, for example, the upper holding piece 62c (see FIG. 4) that forms the tight groove for holding the tight material formed on the inner wall surface of the outdoor wall portion 62a is the opposite protruding piece 71a. In this case, the heat-expandable member 65 may be held using the holding piece 62c instead of the one protruding piece 72a. In other words, in the case of this configuration, the thermally expandable member 65 is held at the bottom of the opening groove 62 by the holding piece 62c and the protruding piece 72b serving as a pair of protruding pieces.

  DESCRIPTION OF SYMBOLS 10 Joinery, 12 Opening frame, 12a Upper frame, 12b Lower frame, 12c, 12d Vertical frame, 14, 15 Shoji, 18 Metal frame, 20 Resin frame, 22, 23, 26, 27 Rail, 25, 65, 65a, 67 , 67a Thermal expansion member, 32 housing, 32a upper housing, 32b lower housing, 32c door-end housing, 32d summoning housing, 34 face plate, 38 metal housing, 40 resin housing, 42, 62, 72 opening groove, 44 , 64, 74, 84 Face material arrangement groove, 62a, 62b wall portion, 66a lower wall, 70 door wheel, 71a, 71b protruding piece, P pocket

Claims (3)

The sliding door is slidably arranged with respect to the opening frame by bringing a resin door wheel provided on the lower arm of the sliding screen into contact with the rail protruding upward from the lower frame of the opening frame so as to be able to roll. It is a joinery that has been set up,
The lower arm extends along the longitudinal direction of the lower arm, and an opening groove into which the rail is inserted and abuts on the door wheel,
At the position above the contact position between the rail and the door wheel, the pair of wall portions serving as the side walls of the opening groove protrude in opposite directions from the opposing wall surfaces, and along the longitudinal direction of the lower arm A pair of protruding pieces for holding the thermally expandable member on the upper surface thereof by extending,
The pair of projecting pieces is provided with a gap into which the rail can be inserted between the tips facing each other, and the gap between the tips is smaller than the gap between the opposing wall surfaces of the pair of wall portions. Joinery. The joinery according to claim 1,
The said thermally expansible member is arrange | positioned at the bottom part of the said opening groove | channel by hold | maintaining with a pair of said protrusion piece, The fitting characterized by the above-mentioned. In the joinery of claim 2,
A joinery characterized in that another thermally expandable member is provided on at least the wall surface of the wall portion on the indoor side of the pair of wall portions serving as the side walls of the opening groove.

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