JP6986975B2

JP6986975B2 - Glass door for showcase

Info

Publication number: JP6986975B2
Application number: JP2018002947A
Authority: JP
Inventors: 真二菊野; 昇悟高橋
Original assignee: フクシマガリレイ株式会社
Priority date: 2018-01-11
Filing date: 2018-01-11
Publication date: 2021-12-22
Anticipated expiration: 2038-01-11
Also published as: JP2019122418A

Description

本発明は、クローズド型ショーケースの前面開口を開閉するガラス扉に関し、とくにガラス板を含む扉本体の四周縁に固定される縁枠の組付け性の向上を図る技術に関する。 The present invention relates to a glass door that opens and closes the front opening of a closed type showcase, and more particularly to a technique for improving the assembling property of a frame frame fixed to the four peripheral edges of a door body including a glass plate.

本発明のショーケース用ガラス扉の縁枠は、樹脂製の内枠と金属製の外枠とで構成されるが、このような縁枠を備えるガラス扉は、特許文献１に開示されており公知である。特許文献１のショーケース用扉では、内枠（第一枠材）に撓み変形可能な第一係止片および第二係止片が設けられており、外枠（第二枠材）に前記第一および第二の係止片と係合可能な第一係止受部および第二係止受部が設けられている。第一および第二の係止片を撓み変形させつつ第一および第二の係止受部に係合させることにより、外枠を内枠に組付けることができる。 The edge frame of the glass door for a showcase of the present invention is composed of an inner frame made of resin and an outer frame made of metal, and a glass door provided with such an edge frame is disclosed in Patent Document 1. It is known. In the showcase door of Patent Document 1, the inner frame (first frame material) is provided with a flexible and deformable first locking piece and a second locking piece, and the outer frame (second frame material) is described above. A first locking receiving portion and a second locking receiving portion that can engage with the first and second locking pieces are provided. The outer frame can be assembled to the inner frame by engaging the first and second locking pieces with the first and second locking receiving portions while bending and deforming them.

特開２０１６−５９５８８号公報（図４）Japanese Unexamined Patent Publication No. 2016-59588 (Fig. 4)

特許文献１のショーケース用扉においては、撓み変形させながら係合させるだけの簡単な圧嵌係合操作で外枠を内枠に組付けることができる。しかし、第一および第二の係止片を撓み変形させるためには、ある程度強い力が必要であり、とくに扉の長辺部においてはより大きな力が必要になる。そのため、非力な作業者の場合には扉の長辺部における内枠に対する外枠の組付けが困難であった。 In the showcase door of Patent Document 1, the outer frame can be assembled to the inner frame by a simple pressure-fitting engagement operation in which the door is engaged while being bent and deformed. However, in order to bend and deform the first and second locking pieces, a certain amount of strong force is required, and a larger force is required especially on the long side of the door. Therefore, in the case of a weak worker, it is difficult to assemble the outer frame to the inner frame at the long side of the door.

本発明の目的は、外枠を内枠により簡便に組付けることが可能であり、従って縁枠の組付け性に優れたショーケース用ガラス扉を提供することにある。 An object of the present invention is to provide a glass door for a showcase in which an outer frame can be easily assembled by an inner frame, and therefore the edge frame is excellent in assembling property.

本発明は、ガラス板１０を含む扉本体７と、扉本体７の四周縁に固定される上下左右の枠１４・１５・１６・１７からなる縁枠８とを備えるショーケース用ガラス扉を対象とする。各枠１４・１５・１６・１７は、それぞれ扉本体７の周縁部に装着される樹脂製条材からなる内枠１８と、内枠１８の外面を覆う金属製条材からなる外枠１９とで構成されている。内枠１８は、扉本体７の周端面に正対する内枠ベース２２と、内枠ベース２２の前後にそれぞれ連設される前壁２３および後壁２４とを備えている。外枠１９は、内枠１８の外周面を覆う外周面壁４１と、外周面壁４１の前端に連設されて内枠１８の前面を覆う前面壁４２とでＬ字状に形成されている。外枠１９と内枠１８とは、両枠１８・１９の間に設けられる２組の枠連結構造５０を介して連結されている。枠連結構造５０は、互いに係合する係合リブ５１と係合溝５２とで構成されている。内枠１８の前壁２３および後壁２４に係合溝５２が凹み形成され、外枠１９の外周面壁４１および前面壁４２の内面に係合リブ５１が突設されて、前壁２３と前面壁４２との間、および後壁２４と外周面壁４１との間に、枠連結構造５０がそれぞれ設けられている。内枠１８に対して外枠１９を連結するときの枠連結構造５０の連結形態として、１組の枠連結構造５０の係合リブ５１と係合溝５２とを内枠１８の長手方向に仮係合させた状態で、枠連結構造５０を仮係合させた仮係合支点６４の回りに外枠１９を回動させることにより、残る枠連結構造５０の係合リブ５１と係合溝５２とが圧嵌係合される圧嵌連結形態と、各枠連結構造５０の係合リブ５１と係合溝５２とが互いに係合する状態で、内枠１８の一端から他端にわたって外枠１９をスライドさせることにより、各枠連結構造５０の係合リブ５１と係合溝５２とが差込み係合されるスライド連結形態とのいずれかを選択可能に構成されている。 The present invention is intended for a glass door for a showcase including a door body 7 including a glass plate 10 and an edge frame 8 composed of upper, lower, left and right frames 14, 15, 16 and 17 fixed to the four peripheral edges of the door body 7. And. Each of the frames 14, 15, 16 and 17 has an inner frame 18 made of a resin strip attached to the peripheral edge of the door body 7, and an outer frame 19 made of a metal strip covering the outer surface of the inner frame 18. It is composed of. The inner frame 18 includes an inner frame base 22 facing the peripheral end surface of the door body 7, and a front wall 23 and a rear wall 24 connected to the front and rear of the inner frame base 22, respectively. The outer frame 19 is formed in an L shape by an outer peripheral surface wall 41 that covers the outer peripheral surface of the inner frame 18 and a front wall 42 that is connected to the front end of the outer peripheral surface wall 41 and covers the front surface of the inner frame 18. And the inner frame 18 is an outer frame 19, are connected through the two sets of the frame connection structure 50 that is provided between the two frames 18, 19. Frame connecting structure 50, Ru Tei is constituted by the engaging rib 51 with the engaging groove 52 to be engaged with each other. Engagement grooves 52 are formed in the front wall 23 and the rear wall 24 of the inner frame 18, and engagement ribs 51 are projected from the outer peripheral surface wall 41 of the outer frame 19 and the inner surface of the front wall 42, so that the front wall 23 and the front surface thereof are formed. A frame connecting structure 50 is provided between the wall 42 and the rear wall 24 and the outer peripheral surface wall 41, respectively. As a connection form of the frame connecting structure 50 when the outer frame 19 is connected to the inner frame 18, the engaging rib 51 and the engaging groove 52 of one set of the frame connecting structure 50 are provisionally provided in the longitudinal direction of the inner frame 18. By rotating the outer frame 19 around the temporary engagement fulcrum 64 to which the frame connection structure 50 is temporarily engaged in the engaged state, the engagement rib 51 and the engagement groove 52 of the remaining frame connection structure 50 are rotated. The outer frame 19 extends from one end to the other end of the inner frame 18 in a state where the engagement rib 51 and the engagement groove 52 of each frame connection structure 50 are engaged with each other. by sliding the, that is selectably configured either the slide connection forms the engaging rib 51 with the engaging groove 52 of the frame coupling structure 50 is engaged bayonet engagement.

上下の枠１４・１５の外枠１９・１９、または基端および先端の枠１６・１７の外枠１９・１９のいずれか一方の前面壁４２の両端に、他方の前面壁４２が接合されるＬ字状の連結部５９がそれぞれ切欠き形成されている。連結部５９が形成された外枠１９・１９のうち、少なくとも片方の外枠１９の外周面壁４１の一端に、枠連結構造５０をスライド連結形態で連結させる際に、係合リブ５１が外周面壁４１に当接するのを回避するための逃げ切欠き部６０が設けられていることを特徴とする。 At both ends of either one of the front wall 42 of the outer frame 19, 19 of the outer frame 19, 19, or proximal and distal ends of the frame 16, 17, of the frame 14, 15 under the above, the other of the front wall 42 is joined Each of the L-shaped connecting portions 59 is formed with a notch. Of the outer frames 19 and 19 on which the connecting portion 59 is formed, when the frame connecting structure 50 is connected to one end of the outer peripheral surface wall 41 of at least one outer frame 19 in a slide connecting form, the engaging rib 51 is attached to the outer peripheral surface wall. It is characterized in that a relief notch 60 for avoiding contact with 41 is provided.

具体的には、扉本体７は上下に長い長方形状に形成されており、短辺側の上下の枠１４・１５の外枠１９・１９の前面壁４２の両端に、連結部５９がそれぞれ切欠き形成されており、下枠１５の外枠１９の外周面壁４１の一端に、逃げ切欠き部６０が設けられている。 Specifically, the door body 7 is formed in a rectangular shape that is long vertically, and the connecting portions 59 are cut at both ends of the front wall 42 of the outer frames 19 and 19 of the upper and lower frames 14 and 15 on the short side. A notch is formed, and an escape notch 60 is provided at one end of the outer peripheral surface wall 41 of the outer frame 19 of the lower frame 15.

内枠ベース２２は、扉本体７の各辺部における周端面に密着する第１ベース壁２５と、第１ベース壁２５の前端に扉本体７の周端面へ近づく向きに設けられる第２ベース壁２６と、第２ベース壁２６の連設端に前向きに設けられる第３ベース壁２７とでクランク状に形成されている。第３ベース壁２７の先端に扉本体７の周端面へ近づく向きに前壁２３が設けられ、第１ベース壁２５の先端に扉本体７の周端面から離れる向きに後壁２４が設けられて、前壁２３および後壁２４のそれぞれが、内枠ベース２２から片持ち状に突設されている形態を採ることができる。 The inner frame base 22 has a first base wall 25 that is in close contact with the peripheral end surface of each side of the door body 7, and a second base wall that is provided at the front end of the first base wall 25 so as to approach the peripheral end surface of the door body 7. The 26 and the third base wall 27 provided forward at the continuous end of the second base wall 26 are formed in a crank shape. A front wall 23 is provided at the tip of the third base wall 27 in a direction approaching the peripheral end surface of the door body 7, and a rear wall 24 is provided at the tip of the first base wall 25 in a direction away from the peripheral end surface of the door body 7. Each of the front wall 23 and the rear wall 24 can be cantilevered from the inner frame base 22.

扉本体７と内枠１８との間に、縁枠８内部への結露水の侵入を防ぐシール体３０が設けられている。内枠１８が、扉本体７の表裏を挟持する一対の前後の挟持壁２８・２９を備え、各挟持壁２８・２９にシール体３０が一体的に設けられている形態を採ることができる。 A seal body 30 is provided between the door body 7 and the inner frame 18 to prevent dew condensation from entering the inside of the edge frame 8. The inner frame 18 includes a pair of front and rear holding walls 28 and 29 that sandwich the front and back of the door body 7, and the sealing body 30 can be integrally provided on each holding wall 28 and 29.

内枠１８に設けたヒーター装着溝３６に、縁枠８表面の結露を防ぐ防露ヒーター３５が装着されている。外枠１９を内枠１８に連結した状態において、防露ヒーター３５の一部が外枠１９に接触している形態を採ることができる。 A dew-proof heater 35 for preventing dew condensation on the surface of the edge frame 8 is mounted on the heater mounting groove 36 provided in the inner frame 18. In a state where the outer frame 19 is connected to the inner frame 18, a form in which a part of the dew-proof heater 35 is in contact with the outer frame 19 can be adopted.

扉本体７の周端面から離れた側の後壁２４の端面に設けられたヒーター装着溝３６に、防露ヒーター３５が装着されていることが好ましい。 It is preferable that the dew-proof heater 35 is mounted in the heater mounting groove 36 provided on the end surface of the rear wall 24 on the side away from the peripheral end surface of the door body 7.

本発明のショーケース用ガラス扉においては、縁枠８の外枠１９と内枠１８は、両枠１８・１９の間に設けられる少なくとも２組の枠連結構造５０を介して連結した。内枠１８に対して外枠１９を連結するときの枠連結構造５０の連結形態として、圧嵌連結形態と、スライド連結形態とのいずれかを選択可能に構成した。こうしたガラス扉によれば、すべての枠１４・１５・１６・１７において圧嵌連結形態で連結できる作業者であれば、外枠１９を内枠１８に素早く簡便に組付けることができ、一部圧嵌連結形態での連結が困難な作業者であれば、当該部分をスライド連結形態で連結することで、外枠１９を内枠１８に簡便に組付けることができる。以上のように、本発明によれば、内枠１８に対する外枠１９の連結作業を行う作業者に応じて連結形態を選択して組付けを行うことができるので、外枠１９を内枠１８により簡便に組付けることが可能であり、従って縁枠８の組付け性に優れたショーケース用ガラス扉とすることができる。なお、すべての枠１４・１５・１６・１７においてスライド連結形態で連結することもでき、圧嵌係合を行わない分作業者の作業負担を軽減することもできる。 In the glass door for a showcase of the present invention, the outer frame 19 and the inner frame 18 of the edge frame 8 are connected via at least two sets of frame connecting structures 50 provided between the two frames 18 and 19. As the connection form of the frame connection structure 50 when the outer frame 19 is connected to the inner frame 18, either a pressure-fitting connection form or a slide connection form can be selected. According to such a glass door, a worker who can connect all the frames 14, 15, 16, and 17 in a pressure-fitting connection form can quickly and easily assemble the outer frame 19 to the inner frame 18, and some of them. A worker who has difficulty in connecting in the press-fitting connection form can easily assemble the outer frame 19 to the inner frame 18 by connecting the portions in the slide connection form. As described above, according to the present invention, the outer frame 19 can be assembled by selecting the connection form according to the worker who connects the outer frame 19 to the inner frame 18. Therefore, the glass door for a showcase having excellent assembling property of the edge frame 8 can be obtained. In addition, all the frames 14, 15, 16 and 17 can be connected in a slide connection form, and the work load of the operator can be reduced because the pressure fitting engagement is not performed.

この種のガラス扉の縁枠８の四隅部は、外枠１９・１９どうしが直角に突き合わされた部分に隙間が生じないよう各外枠１９の両端部が整形されている。しかし、３辺の外枠１９を内枠１８に連結した状態では、残る内枠１８の両端面が隣り合う辺部の内枠１８に連結された外枠１９の外周面壁４１で覆われて、係合リブ５１と係合溝５２とを互いに係合させることができないため、最後に連結する外枠１９は、スライド連結形態を選択することができない。そこで本発明のように、外周面壁４１が接合される連結部５９が形成された外枠１９・１９のうち、少なくとも片方の外枠１９の外周面壁４１の一端に、枠連結構造５０をスライド連結形態で連結させる際に、係合リブ５１が外周面壁４１に当接するのを回避するための逃げ切欠き部６０を設けると、逃げ切欠き部６０を介して係合リブ５１と係合溝５２とを互いに係合させることができ、また、外周面壁４１どうしが当接するのを連結壁５９で回避できる。そのため、逃げ切欠き部６０に臨む内枠１８の外枠１９を最後に連結することにより、最後に連結される外枠１９をスライド連結形態で内枠１８に連結させることができる。 At the four corners of the edge frame 8 of this type of glass door, both ends of each outer frame 19 are shaped so that there is no gap in the portion where the outer frames 19 and 19 are butted at right angles. However, in a state where the outer frames 19 on three sides are connected to the inner frame 18, both end faces of the remaining inner frame 18 are covered with the outer peripheral surface wall 41 of the outer frame 19 connected to the inner frames 18 of the adjacent side portions. Since the engaging rib 51 and the engaging groove 52 cannot be engaged with each other, the outer frame 19 to be connected last cannot select the slide connection form. Therefore, as in the present invention, the frame connecting structure 50 is slid-connected to at one end of the outer peripheral surface wall 41 of at least one of the outer frames 19 and 19 in which the connecting portion 59 to which the outer peripheral surface wall 41 is joined is formed. When the engagement rib 51 is provided in the form of a relief notch 60 for preventing the engagement rib 51 from coming into contact with the outer peripheral surface wall 41, the engagement rib 51 and the engagement groove 52 are provided via the relief notch 60. Can be engaged with each other, and the connecting wall 59 can prevent the outer peripheral surface walls 41 from coming into contact with each other. Therefore, by finally connecting the outer frame 19 of the inner frame 18 facing the escape cutout portion 60, the outer frame 19 finally connected can be connected to the inner frame 18 in a slide connection form.

短辺側の上下の枠１４・１５の外枠１９・１９の前面壁４２の両端に、連結部５９をそれぞれ切欠き形成し、下枠１５の外枠１９の外周面壁４１の一端に、逃げ切欠き部６０を設けると、圧嵌係合により強い力を必要とする長辺部側となる基端枠１６の外枠１９、あるいは先端枠１７の外枠１９を最後に連結する場合でも圧嵌連結形態とスライド連結形態のいずれかを選択でき、より組付け性に優れたショーケース用ガラス扉とすることができる。 Connecting portions 59 are notched at both ends of the front walls 42 of the outer frames 19 and 19 of the upper and lower frames 14 and 15 on the short side, and escape to one end of the outer peripheral surface wall 41 of the outer frame 19 of the lower frame 15. When the notch portion 60 is provided, pressure is applied even when the outer frame 19 of the base end frame 16 or the outer frame 19 of the tip frame 17 on the long side side, which requires a strong force due to pressure fitting engagement, is finally connected. Either a fitting connection form or a slide connection form can be selected, and a glass door for a showcase with better assembling property can be obtained.

内枠ベース２２を第１ベース壁２５、第２ベース壁２６、および第３ベース壁２７でクランク状に形成した。また、第３ベース壁２７の先端に扉本体７の周端面へ近づく向きに前壁２３を設け、第１ベース壁２５の先端に扉本体７の周端面から離れる向きに後壁２４を設けて、前壁２３および後壁２４のそれぞれを内枠ベース２２から片持ち状に突設した。こうした内枠１８によれば、圧嵌連結形態においては、枠連結構造５０が設けられる前壁２３および後壁２４を大きく撓み変形させることができるので、圧嵌係合に必要な力を軽減することができる。また、スライド連結形態においては、内枠１８に対して外枠１９を差込み係合する際に、係合リブ５１と係合溝５２と間に隙間ができるように前壁２３および後壁２４を僅かに撓み変形させることで、両者５１・５２が摺接することに起因する摩擦抵抗力を低減でき、摩擦抵抗力が最大となる係合終端付近においても外枠１９の差込み係合をスムーズに行える。以上のように、前壁２３および後壁２４を片持ち状に突設することにより、圧嵌連結形態およびスライド連結形態のいずれにおいても内枠１８に対する外枠１９の組付けを簡便化できる。 The inner frame base 22 is formed in a crank shape by the first base wall 25, the second base wall 26, and the third base wall 27. Further, a front wall 23 is provided at the tip of the third base wall 27 in a direction approaching the peripheral end surface of the door body 7, and a rear wall 24 is provided at the tip of the first base wall 25 in a direction away from the peripheral end surface of the door body 7. , Each of the front wall 23 and the rear wall 24 is cantilevered from the inner frame base 22. According to such an inner frame 18, in the press-fitting connection form, the front wall 23 and the rear wall 24 on which the frame connecting structure 50 is provided can be greatly flexed and deformed, so that the force required for press-fitting engagement is reduced. be able to. Further, in the slide connecting form, the front wall 23 and the rear wall 24 are provided so that a gap is formed between the engaging rib 51 and the engaging groove 52 when the outer frame 19 is inserted and engaged with the inner frame 18. By slightly bending and deforming, the frictional resistance force caused by the sliding contact between the two 51 and 52 can be reduced, and the insertion engagement of the outer frame 19 can be smoothly performed even near the engagement end where the frictional resistance force is maximized. .. As described above, by projecting the front wall 23 and the rear wall 24 in a cantilever shape, it is possible to simplify the assembly of the outer frame 19 to the inner frame 18 in both the pressure-fitting connection form and the slide connection form.

内枠１８は、扉本体７の表裏を挟持する一対の前後の挟持壁２８・２９を備え、各挟持壁２８・２９に縁枠８内部への結露水の侵入を防ぐシール体３０を一体的に設けた。これによれば、シール体３０を別部材として設ける場合に比べて、縁枠８を組付ける際の部品点数を減らすことができ、従って組付け作業の手間を軽減し、縁枠８の組付け性をさらに向上できる。 The inner frame 18 includes a pair of front and rear holding walls 28 and 29 that sandwich the front and back of the door body 7, and a sealing body 30 that prevents dew condensation from entering the inside of the edge frame 8 is integrated into each holding wall 28 and 29. It was installed in. According to this, the number of parts when assembling the edge frame 8 can be reduced as compared with the case where the seal body 30 is provided as a separate member, and therefore the labor of the assembling work is reduced and the edge frame 8 is assembled. The sex can be further improved.

内枠１８に設けたヒーター装着溝３６に、縁枠８表面の結露を防ぐ防露ヒーター３５を装着すると、防露ヒーター３５に電力を供給するリード線を内枠１８側に固定しておくことができるので、外枠１９の組付け時に防露ヒーター３５から伸びるリード線が邪魔にならず、内枠１８に対して外枠１９をより簡便に組付けることができる。逆に、外枠１９に防露ヒーター３５が装着されていると、リード線を保持しながら内枠１８に対して外枠１９を組付ける必要があり、その分組付けに手間を要する。加えて、外枠１９を内枠１８に連結した状態において、防露ヒーター３５の一部が外枠１９に接触していると、防露ヒーター３５の熱を外枠１９に確実に伝導でき、縁枠８表面に結露が発生するのをよく防止できる。 When the dew-proof heater 35 that prevents dew condensation on the surface of the edge frame 8 is mounted on the heater mounting groove 36 provided in the inner frame 18, the lead wire that supplies power to the dew-proof heater 35 is fixed to the inner frame 18 side. Therefore, the lead wire extending from the dew-proof heater 35 does not get in the way when the outer frame 19 is assembled, and the outer frame 19 can be more easily assembled to the inner frame 18. On the contrary, when the dew-proof heater 35 is attached to the outer frame 19, it is necessary to assemble the outer frame 19 to the inner frame 18 while holding the lead wire, and it takes time and effort to assemble the outer frame 19 by that amount. In addition, when the outer frame 19 is connected to the inner frame 18, if a part of the dew-proof heater 35 is in contact with the outer frame 19, the heat of the dew-proof heater 35 can be reliably conducted to the outer frame 19. It is possible to prevent dew condensation from forming on the surface of the edge frame 8.

扉本体７の周端面から離れた側の後壁２４の端面に設けられたヒーター装着溝３６に、防露ヒーター３５を装着すると、扉本体７から遠ざけた位置に防露ヒーター３５を配置できる。これにより、防露ヒーター３５の熱が扉本体７に伝導して庫内温度を上昇させる要因となるのを回避できる。 When the dew-proof heater 35 is mounted in the heater mounting groove 36 provided on the end surface of the rear wall 24 on the side away from the peripheral end surface of the door body 7, the dew-proof heater 35 can be arranged at a position away from the door body 7. As a result, it is possible to prevent the heat of the dew-proof heater 35 from being conducted to the door body 7 and causing an increase in the temperature inside the refrigerator.

本発明に係るショーケース用ガラス扉における縁枠の基端枠部分を示す横断平面図である。It is a cross-sectional plan view which shows the base end frame part of the edge frame in the glass door for a showcase which concerns on this invention. 本発明のガラス扉を適用したショーケースの正面図である。It is a front view of the showcase to which the glass door of this invention is applied. 上外枠、下外枠、基端外枠、先端外枠、および内枠の断面形状を説明するための断面図である。It is sectional drawing for demonstrating the cross-sectional shape of the upper outer frame, the lower outer frame, the base end outer frame, the tip outer frame, and the inner frame. ガラス扉の分解正面図である。It is an exploded front view of a glass door. 縁枠の先端枠部分を示す横断平面図である。It is a cross-sectional plan view which shows the tip frame part of the edge frame. 縁枠の上枠部分を示す縦断側面図である。It is a vertical sectional side view which shows the upper frame part of the edge frame. 縁枠の締結部分を示す縦断正面図である。It is a vertical sectional front view which shows the fastening part of the edge frame. 基端枠部分を圧嵌連結形態で連結する方法を示す説明図である。It is explanatory drawing which shows the method of connecting a base end frame part by a pressure fitting connection form. 圧嵌連結形態を選択した場合の組付け順序の一例を示す説明図である。It is explanatory drawing which shows an example of the assembling order when the press-fitting connection form is selected. スライド連結形態を選択した場合の組付け順序の一例を示す説明図である。It is explanatory drawing which shows an example of the assembly order when the slide connection form is selected. 圧嵌連結形態およびスライド連結形態の両方を選択した場合の組付け順序の一例を示す説明図である。It is explanatory drawing which shows an example of the assembling order when both the press-fitting connection form and the slide connection form are selected.

（実施例）図１から図１１は、本発明に係るショーケース用ガラス扉をクローズド型のショーケースに適用した実施例を示す。この実施例における前後、左右、上下とは、図１、図２、図５、および図６に示す交差矢印と、各矢印の近傍に表記した前後、左右、上下の表示に従う。図２においてショーケースは、前面開口を有する断熱箱体からなるケース本体１を備える。ケース本体１の内部は陳列室２とされており、陳列室２の前面は観音開き構造の左右一対のガラス扉３・３で開閉される。各ガラス扉３は、揺動基端側の上下に設けられる揺動軸４・４で前後揺動可能に支持されている。 (Examples) FIGS. 1 to 11 show examples in which the glass door for a showcase according to the present invention is applied to a closed type showcase. The front-back, left-right, and up-down in this embodiment follow the crossing arrows shown in FIGS. 1, 2, 5, and 6, and the front-back, left-right, and up-down indications shown in the vicinity of each arrow. In FIG. 2, the showcase includes a case body 1 made of a heat insulating box body having a front opening. The inside of the case body 1 is a display room 2, and the front surface of the display room 2 is opened and closed by a pair of left and right glass doors 3 and 3 having a double door structure. Each glass door 3 is supported so as to be swingable back and forth by swing shafts 4 and 4 provided above and below the swing base end side.

一対のガラス扉３・３は左右勝手違いの構造であり、以下ではショーケースの正面視において左側に配置されるガラス扉３について説明する。ガラス扉３は、扉本体７と、扉本体７の四周縁に固定される縁枠８と、ガラス扉３を開閉操作するためのハンドル９を備えている。扉本体７は、上下に長い長方形状の３枚のガラス板１０がスペーサ１１を介して一体に接合された複層ガラスで構成されており（図３参照）、複層ガラスを使用することによりガラス扉３の断熱性を向上させることができる。縁枠８は、扉本体７の上下に固定される上枠１４および下枠１５と、揺動基端側に固定される基端枠１６と、揺動先端側に固定される先端枠１７とで構成されている。なお、ショーケースの右側に配置されるガラス扉３においては、右枠が基端枠１６となり左枠が先端枠１７となる。 The pair of glass doors 3 and 3 have a structure in which the left and right sides are different from each other, and the glass doors 3 arranged on the left side in the front view of the showcase will be described below. The glass door 3 includes a door body 7, an edge frame 8 fixed to the four peripheral edges of the door body 7, and a handle 9 for opening and closing the glass door 3. The door body 7 is made of double glazing in which three vertically long rectangular glass plates 10 are integrally joined via a spacer 11 (see FIG. 3), and by using the double glazing. The heat insulating property of the glass door 3 can be improved. The edge frame 8 includes an upper frame 14 and a lower frame 15 fixed to the top and bottom of the door body 7, a base end frame 16 fixed to the swing base end side, and a tip frame 17 fixed to the swing tip side. It is composed of. In the glass door 3 arranged on the right side of the showcase, the right frame is the base end frame 16 and the left frame is the tip frame 17.

図１、図３および図４に示すように、上下、基端、および先端の各枠１４〜１７は、それぞれ扉本体７の周縁部に装着される内枠１８と、内枠１８の外面を覆う外枠１９とで構成されている。内枠１８は樹脂製条材からなり、各枠１４〜１７において同じ条材で構成されている。外枠１９はアルミニウム製（金属製）条材からなり、上枠１４に適用される上外枠１９Ａ（外枠１９）、下枠１５に適用される下外枠１９Ｂ（外枠１９）、基端枠１６に適用される基端外枠１９Ｃ（外枠１９）と、先端枠１７に適用される先端外枠１９Ｄ（外枠１９）の四種類がある。上外枠１９Ａと下外枠１９Ｂは同じ条材で構成される。 As shown in FIGS. 1, 3 and 4, the upper and lower, base end, and tip frames 14 to 17 each have an inner frame 18 mounted on the peripheral edge of the door body 7 and an outer surface of the inner frame 18. It is composed of an outer frame 19 to cover. The inner frame 18 is made of a resin strip, and each of the frames 14 to 17 is made of the same strip. The outer frame 19 is made of an aluminum (metal) strip, and has an upper outer frame 19A (outer frame 19) applied to the upper frame 14, a lower outer frame 19B (outer frame 19) applied to the lower frame 15, and a base. There are four types: a base end outer frame 19C (outer frame 19) applied to the end frame 16 and a tip outer frame 19D (outer frame 19) applied to the tip frame 17. The upper outer frame 19A and the lower outer frame 19B are made of the same material.

内枠１８は、扉本体７の各辺部における周端面に正対する内枠ベース２２と、内枠ベース２２の前後にそれぞれ連設される前壁２３および後壁２４とを備えている。内枠ベース２２は、扉本体７の各辺部における周端面に密着する第１ベース壁２５と、第１ベース壁２５の前端に扉本体７の周端面から離れる向きに設けられる第２ベース壁２６と、第２ベース壁２６の連設端から前向きに設けられる第３ベース壁２７とでクランク状に形成されている。前壁２３は第３ベース壁２７の前端（先端）に扉本体７の周端面へ近づく向きに設けられており、後壁２４は第１ベース壁２５の後端（先端）に扉本体７の周端面から離れる向きに設けられている。これにより、前壁２３および後壁２４のそれぞれは、内枠ベース２２から片持ち状に突設されている。第３ベース壁２７と前壁２３の接続部分は丸められている。 The inner frame 18 includes an inner frame base 22 facing the peripheral end surface of each side of the door body 7, and a front wall 23 and a rear wall 24 connected to the front and rear of the inner frame base 22, respectively. The inner frame base 22 has a first base wall 25 that is in close contact with the peripheral end surface of each side of the door body 7, and a second base wall that is provided at the front end of the first base wall 25 in a direction away from the peripheral end surface of the door body 7. The 26 and the third base wall 27 provided forward from the continuous end of the second base wall 26 are formed in a crank shape. The front wall 23 is provided at the front end (tip) of the third base wall 27 in a direction approaching the peripheral end surface of the door body 7, and the rear wall 24 is provided at the rear end (tip) of the door body 7 at the rear end (tip) of the first base wall 25. It is provided so as to be away from the peripheral end surface. As a result, each of the front wall 23 and the rear wall 24 is cantilevered from the inner frame base 22. The connecting portion between the third base wall 27 and the front wall 23 is rounded.

内枠１８が扉本体７に装着された状態において、前壁２３の先端面は、その後側過半部分が扉本体７の周端面に密着しており、残る前側部分が扉本体７の庫外側表面より前側に突出している。また、第１ベース壁２５の後端は扉本体７の庫内側表面より後側に突出している。これら前壁２３の前側突出部分と、第１ベース壁２５の後側突出部分のそれぞれには、扉本体７の表裏を挟持する前後一対の前挟持壁２８および後挟持壁２９が扉本体７側に向かって突設されている。 When the inner frame 18 is attached to the door body 7, the front end surface of the front wall 23 has a rear majority portion in close contact with the peripheral end surface of the door body 7, and the remaining front surface is the outer surface of the door body 7. It protrudes more forward. Further, the rear end of the first base wall 25 projects to the rear side from the inner surface of the door body 7. A pair of front and rear holding walls 28 and a rear holding wall 29 that sandwich the front and back of the door body 7 are on the door body 7 side in each of the front protruding portion of the front wall 23 and the rear protruding portion of the first base wall 25. It is thrust toward.

扉本体７と内枠１８との間に、縁枠８内部への結露水の侵入を防ぐシール体３０が設けられている。具体的には、前挟持壁２８が前側のシール体３０を兼ねており、後挟持壁２９の前面に、平行な２条のリブ状突起からなる後側のシール体３０が設けられている。内枠１８と前挟持壁２８と後側のシール体３０は、２色押出成形法によって異種樹脂材が一体的に形成されている。本実施例では、シール体３０部分は比較的軟質のＡＢＳ樹脂からなり、残る内枠１８部分は比較的硬質のＡＢＳ樹脂からなる。このように、内枠１８の各挟持壁２８・２９にシール体３０を一体的に設けると、シール体３０を別部材として設ける場合に比べて、縁枠８を組付ける際の部品点数を減らすことができ、従って組付け作業の手間を軽減し、縁枠８の組付け性を向上できる。装着状態における内枠１８は、前挟持枠２８（シール体３０）と後挟持壁２９のシール体３０とが扉本体７の表裏に密着している（図１参照）。 A seal body 30 is provided between the door body 7 and the inner frame 18 to prevent dew condensation from entering the inside of the edge frame 8. Specifically, the front holding wall 28 also serves as the front sealing body 30, and the rear sealing body 30 composed of two parallel rib-shaped protrusions is provided on the front surface of the rear holding wall 29. The inner frame 18, the front holding wall 28, and the seal body 30 on the rear side are integrally formed of different resin materials by a two-color extrusion molding method. In this embodiment, the 30 portion of the seal body is made of a relatively soft ABS resin, and the remaining 18 portion of the inner frame is made of a relatively hard ABS resin. In this way, if the seal body 30 is integrally provided on each of the holding walls 28 and 29 of the inner frame 18, the number of parts when assembling the edge frame 8 is reduced as compared with the case where the seal body 30 is provided as a separate member. Therefore, the labor of assembling work can be reduced and the assembling property of the edge frame 8 can be improved. In the inner frame 18 in the mounted state, the front holding frame 28 (seal body 30) and the sealing body 30 of the rear holding wall 29 are in close contact with the front and back of the door body 7 (see FIG. 1).

後壁２４の中途部にはパッキン装着溝３４が後向きに開口する状態で設けられており、同溝３４にマグネットパッキン３３が圧嵌装着されている。マグネットパッキン３３は、ケース本体１とガラス扉３との間をシールして冷気と外気を遮断し、さらにガラス扉３を閉鎖位置において位置保持するために設けられている。後壁２４の先端（突端）には、縁枠８に結露が生じるのを防止する防露ヒーター３５を装着するためのヒーター装着溝３６が外向きに開口する状態で設けられている。防露ヒーター３５は、シリコンゴムで被覆されたフレキシブルなコードヒーターで構成されており、同ヒーター３５の長さ寸法は、内枠１８と略同一長さに設定されている。防露ヒーター３５は、ヒーター装着溝３６に圧嵌装着される。外枠１９が内枠１８に装着された状態においては、防露ヒーター３５の周面の一部が外枠１９に接触しており、これにより、外枠１９と防露ヒーター３５とは線接触状に接触している。 A packing mounting groove 34 is provided in the middle of the rear wall 24 in a state of opening backward, and a magnet packing 33 is press-fitted and mounted in the groove 34. The magnet packing 33 is provided to seal between the case body 1 and the glass door 3 to block cold air and outside air, and to hold the glass door 3 in a closed position. At the tip (protrusion) of the rear wall 24, a heater mounting groove 36 for mounting a dew-proof heater 35 for preventing dew condensation from occurring on the edge frame 8 is provided in a state of opening outward. The dew-proof heater 35 is composed of a flexible cord heater coated with silicon rubber, and the length dimension of the heater 35 is set to be substantially the same as the inner frame 18. The dew-proof heater 35 is press-fitted and mounted in the heater mounting groove 36. When the outer frame 19 is attached to the inner frame 18, a part of the peripheral surface of the dew-proof heater 35 is in contact with the outer frame 19, whereby the outer frame 19 and the dew-proof heater 35 are in line contact with each other. It is in contact with the shape.

上記のように、内枠１８に設けたヒーター装着溝３６に防露ヒーター３５を装着すると、防露ヒーター３５に電力を供給するリード線を内枠１８側に配置することができるので、外枠１９の組付け時に防露ヒーター３５から伸びるリード線が邪魔にならず、内枠１８に対して外枠１９をより簡便に組付けることができる。逆に、外枠１９に防露ヒーター３５が装着されていると、リード線を保持しながら内枠１８に対して外枠１９を組付ける必要があり、その分組付けに手間を要する。加えて、外枠１９を内枠１８に連結した状態において、防露ヒーター３５の一部が外枠１９に接触していると、防露ヒーター３５の熱を外枠１９に確実に伝導でき、縁枠８表面に結露が発生するのをよく防止できる。
また、内枠１８の後壁２４を、内枠ベース２２の後端から外枠１９の外周面壁４１に向かって連設して、その突端に設けたヒーター装着溝３６に防露ヒーター３５を装着すると、扉本体７から遠ざけた位置に防露ヒーター３５を配置できる。これにより、防露ヒーター３５の熱が扉本体７に伝導して庫内温度を上昇させる要因となるのを回避できる。 As described above, when the dew-proof heater 35 is mounted on the heater mounting groove 36 provided in the inner frame 18, the lead wire for supplying electric power to the dew-proof heater 35 can be arranged on the inner frame 18 side, so that the outer frame can be arranged. The lead wire extending from the dew-proof heater 35 does not get in the way when the 19 is assembled, and the outer frame 19 can be more easily assembled to the inner frame 18. On the contrary, when the dew-proof heater 35 is attached to the outer frame 19, it is necessary to assemble the outer frame 19 to the inner frame 18 while holding the lead wire, and it takes time and effort to assemble the outer frame 19 by that amount. In addition, when the outer frame 19 is connected to the inner frame 18, if a part of the dew-proof heater 35 is in contact with the outer frame 19, the heat of the dew-proof heater 35 can be reliably conducted to the outer frame 19. It is possible to prevent dew condensation from forming on the surface of the edge frame 8.
Further, the rear wall 24 of the inner frame 18 is continuously provided from the rear end of the inner frame base 22 toward the outer peripheral surface wall 41 of the outer frame 19, and the dew-proof heater 35 is attached to the heater mounting groove 36 provided at the tip thereof. Then, the dew-proof heater 35 can be arranged at a position away from the door body 7. As a result, it is possible to prevent the heat of the dew-proof heater 35 from being conducted to the door body 7 and causing an increase in the temperature inside the refrigerator.

ヒーター装着溝３６の前側の溝壁３７は、薄肉壁で構成されて弾性変形可能となっている。このように、ヒーター装着溝３６を形成する一方の溝壁３７を弾性変形可能に形成すると、ヒーター装着部３６への防露ヒーター３５の圧嵌装着時に、溝壁３７が弾性変形して防露ヒーター３５の装着を容易に行うことができるので、縁枠８の組付け作業の手間を軽減できる。 The groove wall 37 on the front side of the heater mounting groove 36 is made of a thin wall and can be elastically deformed. In this way, if one of the groove walls 37 forming the heater mounting groove 36 is formed so as to be elastically deformable, the groove wall 37 is elastically deformed and dew-proof when the dew-proof heater 35 is press-fitted into the heater mounting portion 36. Since the heater 35 can be easily attached, the labor of assembling the edge frame 8 can be reduced.

図３に示すように、上外枠１９Ａ、下外枠１９Ｂ、基端外枠１９Ｃ、および先端外枠１９Ｄは、基本構成は同一であり、内枠１８の外周面を覆う外周面壁４１と、外周面壁４１の前端に連設されて内枠１８の前面を覆う前面壁４２とでＬ字状に形成されている。各外枠１９Ａ・１９Ｂ・１９Ｃ・１９Ｄにおいて外周面壁４１と前面壁４２との接続部分は、それぞれ丸められている。上下の外枠１９Ａ・１９Ｂの外周面壁４１には、その中途部内面に締結壁４３が外周面壁４１と直交する向きに突設されており、締結壁４３の先端には、後述するビス５６をねじ込むためのボス４４が一体に設けられている。基端外枠１９Ｃおよび先端外枠１９Ｄの外周面壁４１には、その中途部内面に規制壁４５が外周面壁４１と直交する向きに突設されている。さらに、先端外枠１９Ｄの規制壁４５の先端には、ハンドル９を締結固定する際の締結座となる座壁４６が設けられている。規制壁４５は、外枠１９を内枠１８に装着した状態において、第２ベース壁２６の外端の係合突起４７と係合している。これにより、規制壁４５と外周面壁４１が協同して外枠１９の前後方向のずれ動きを規制できる。 As shown in FIG. 3, the upper outer frame 19A, the lower outer frame 19B, the base end outer frame 19C, and the tip outer frame 19D have the same basic configuration, and the outer peripheral surface wall 41 covering the outer peripheral surface of the inner frame 18 and the outer peripheral surface wall 41. It is formed in an L shape with a front wall 42 that is connected to the front end of the outer peripheral wall 41 and covers the front surface of the inner frame 18. In each of the outer frames 19A, 19B, 19C, and 19D, the connection portion between the outer peripheral surface wall 41 and the front wall 42 is rounded. On the outer peripheral surface walls 41 of the upper and lower outer frames 19A and 19B, a fastening wall 43 is projected on the inner surface of the middle portion in a direction orthogonal to the outer peripheral surface wall 41, and a screw 56 described later is attached to the tip of the fastening wall 43. A boss 44 for screwing is integrally provided. On the outer peripheral surface wall 41 of the base end outer frame 19C and the tip outer frame 19D, a regulation wall 45 is projected on the inner surface of the middle portion in a direction orthogonal to the outer peripheral surface wall 41. Further, at the tip of the regulation wall 45 of the tip outer frame 19D, a seat wall 46 serving as a fastening seat for fastening and fixing the handle 9 is provided. The regulation wall 45 is engaged with the engagement protrusion 47 at the outer end of the second base wall 26 in a state where the outer frame 19 is attached to the inner frame 18. As a result, the regulation wall 45 and the outer peripheral surface wall 41 can cooperate to regulate the displacement movement of the outer frame 19 in the front-rear direction.

図１、図３、図５、および図６に示すように、上外枠１９Ａ、下外枠１９Ｂ、基端外枠１９Ｃ、および先端外枠１９Ｄ（外枠１９）は、内枠１８と各外枠１９Ａ・１９Ｂ・１９Ｃ・１９Ｄとの間に設けられる２組の枠連結構造５０で内枠１８に連結されている。枠連結構造５０は、互いに係合する係合リブ５１と係合溝５２とで構成されており、係合リブ５１が外枠１９に設けられ、係合溝５２が内枠１８に設けられている。なお、係合リブ５１が内枠１８に設けられ、係合溝５２が外枠１９に設けられている形態を採ることもできる。 As shown in FIGS. 1, 3, 5, and 6, the upper outer frame 19A, the lower outer frame 19B, the base end outer frame 19C, and the tip outer frame 19D (outer frame 19) are the inner frame 18 and each. It is connected to the inner frame 18 by two sets of frame connecting structures 50 provided between the outer frames 19A, 19B, 19C, and 19D. The frame connecting structure 50 is composed of an engaging rib 51 and an engaging groove 52 that engage with each other, the engaging rib 51 is provided in the outer frame 19, and the engaging groove 52 is provided in the inner frame 18. There is. It is also possible to adopt a form in which the engaging rib 51 is provided in the inner frame 18 and the engaging groove 52 is provided in the outer frame 19.

係合リブ５１は、前面壁４２、および外周面壁４１にそれぞれ設けられている。前面壁４２側の係合リブ５１はつの状に形成されており、同壁４２の中途部内面から後向きに突設されている。また、外周面壁４１側の係合リブ５１はＬ字状に形成されており、外周面壁４１の後端内面から扉本体７の周端面へ近づく向きに突設されている。係合溝５２は、前壁２３、および後壁２４にそれぞれ設けられている。前壁２３側の係合溝５２は、前壁２３の先端外面に前向きに開口するように凹み形成されており、つの状の係合リブ５１のつの先が接する側の溝内面がく字状に突出している。また、後壁２４側の係合溝５２は、後壁２４の先端外面に後向きに開口するように凹み形成されている。後壁２４の係合溝５２は、後壁２４の突端側の溝壁が一段浅くなっており、外枠１９を内枠１８に連結した状態において、後壁２４の後面と係合リブ５１の後面とが面一状になるように形成されている（図１参照）。図１および図５において、符号５３は、前側の係合リブ５１と協同して基端枠１６および先端枠１７の左右方向のずれ動きを規制する規制リブである。 The engaging ribs 51 are provided on the front wall 42 and the outer peripheral wall 41, respectively. The engaging rib 51 on the front wall 42 side is formed in a single shape, and is projected backward from the inner surface of the middle portion of the wall 42. Further, the engaging rib 51 on the outer peripheral surface wall 41 side is formed in an L shape, and is projected in a direction approaching the peripheral end surface of the door body 7 from the inner surface of the rear end of the outer peripheral surface wall 41. Engagement grooves 52 are provided in the front wall 23 and the rear wall 24, respectively. The engaging groove 52 on the front wall 23 side is formed as a recess so as to open forward to the outer surface of the tip of the front wall 23, and the inner surface of the groove on the side where the tip of the one-shaped engaging rib 51 comes into contact is shaped like a dogleg. It stands out. Further, the engaging groove 52 on the rear wall 24 side is formed as a recess so as to open backward on the outer surface of the tip of the rear wall 24. The engaging groove 52 of the rear wall 24 has a groove wall on the protruding end side of the rear wall 24 that is one step shallower, and in a state where the outer frame 19 is connected to the inner frame 18, the rear surface of the rear wall 24 and the engaging rib 51 It is formed so as to be flush with the rear surface (see FIG. 1). In FIGS. 1 and 5, reference numeral 53 is a regulating rib that regulates lateral displacement of the base end frame 16 and the tip end frame 17 in cooperation with the front engaging rib 51.

上記のように構成した枠連結構造５０においては、１組の枠連結構造５０の係合リブ５１と係合溝５２とを内枠１８の長手方向に仮係合させた状態で、枠連結構造５０を仮係合させた仮係合支点６４の回りに外枠１９を回動させることにより、残る枠連結構造５０の係合リブ５１と係合溝５２とが圧嵌係合される圧嵌連結形態で内枠１８に対して外枠１９を連結することができる。また、各枠連結構造５０の係合リブ５１と係合溝５２とが互いに係合する状態で、内枠１８の一端から他端にわたって外枠１９をスライドさせることにより、各枠連結構造５０の係合リブ５１と係合溝５２とが差込み係合されるスライド連結形態で内枠１８に対して外枠１９を連結することができる。このように、内枠１８に対して外枠１９を連結するときの枠連結構造５０の連結形態として、圧嵌連結構造と、スライド連結形態とのいずれかの連結形態を選択可能に構成されている。具体的な連結手順については後述する。 In the frame connecting structure 50 configured as described above, the frame connecting structure is in a state where the engaging rib 51 and the engaging groove 52 of the set of frame connecting structures 50 are temporarily engaged in the longitudinal direction of the inner frame 18. By rotating the outer frame 19 around the temporary engagement fulcrum 64 to which the 50 is temporarily engaged, the engagement rib 51 and the engagement groove 52 of the remaining frame connecting structure 50 are press-fitted and engaged. The outer frame 19 can be connected to the inner frame 18 in the connected form. Further, by sliding the outer frame 19 from one end to the other end of the inner frame 18 in a state where the engaging rib 51 and the engaging groove 52 of each frame connecting structure 50 are engaged with each other, the frame connecting structure 50 The outer frame 19 can be connected to the inner frame 18 in a slide connecting form in which the engaging rib 51 and the engaging groove 52 are inserted and engaged. As described above, as the connection form of the frame connection structure 50 when the outer frame 19 is connected to the inner frame 18, either the pressure-fitting connection structure or the slide connection form can be selected. There is. The specific connection procedure will be described later.

各内枠１８に装着された外枠１９は、ビス５６により互いに締結固定される。具体的には、図４および図７に示すように、基端枠１６および先端枠１７の外周面壁４１の上下端において、上下の枠１４・１５のボス４４に対応する位置にビス挿通用のビス孔５７が設けられており、外枠１９を内枠１８に連結したのち、各ビス孔５７にビス５６を挿通してボス４４にねじ込むことにより、上外枠１９Ａ、下外枠１９Ｂ、基端外枠１９Ｃ、および先端外枠１９Ｄが突き合わせ部分で締結固定され、縁枠８が扉本体７に分離不能に固定される。 The outer frames 19 mounted on the inner frames 18 are fastened and fixed to each other by screws 56. Specifically, as shown in FIGS. 4 and 7, screws are inserted at the upper and lower ends of the outer peripheral surface walls 41 of the base end frame 16 and the tip end frame 17 at positions corresponding to the bosses 44 of the upper and lower frames 14 and 15. A screw hole 57 is provided, and after connecting the outer frame 19 to the inner frame 18, the upper outer frame 19A, the lower outer frame 19B, and the base are formed by inserting the screw 56 into each screw hole 57 and screwing it into the boss 44. The end outer frame 19C and the tip outer frame 19D are fastened and fixed at the abutting portion, and the edge frame 8 is inseparably fixed to the door body 7.

ここで、扉本体７に対する縁枠８の組付けについて説明する。最初に扉本体７の四周縁に各枠１４〜１７の内枠１８を仮装着する。各枠１４〜１７の内枠１８は、条材を所定寸法に切断加工して得られる。図４に示すように、上下の枠１４・１５に対応する内枠１８の左右寸法は、扉本体７の左右寸法より僅かに大きく形成されており、基端および先端の枠１６・１７に対応する内枠１８の上下寸法は、扉本体７の上下寸法より僅かに大きく形成されている。内枠１８は、前後の挟持枠２８・２９で扉本体７の表裏を挟持するように四周縁に差込むことで仮装着できる。このとき、額縁状に仮装着された内枠１８の四隅の突き合わせ部分が隙間なく合致するように、前後の挟持枠２８・２９の両端部に斜めに切除した切除部５８が設けられている。なお、切除部５８は、突き合わせ部分のいずれか一方をＬ字状に切欠いた切除部５８であってもよい。内枠１８を仮装着したのち、ヒーター装着溝３６に防露ヒーター３５を圧嵌装着しておく。 Here, the assembly of the edge frame 8 to the door body 7 will be described. First, the inner frames 18 of the frames 14 to 17 are temporarily attached to the four peripheral edges of the door body 7. The inner frame 18 of each frame 14 to 17 is obtained by cutting a strip material to a predetermined size. As shown in FIG. 4, the left-right dimensions of the inner frame 18 corresponding to the upper and lower frames 14 and 15 are formed to be slightly larger than the left-right dimensions of the door body 7, and correspond to the base end and tip frames 16 and 17. The vertical dimension of the inner frame 18 is formed to be slightly larger than the vertical dimension of the door body 7. The inner frame 18 can be temporarily attached by inserting it into the four peripheral edges so as to sandwich the front and back of the door body 7 with the front and rear holding frames 28 and 29. At this time, diagonally cut cut portions 58 are provided at both ends of the front and rear holding frames 28 and 29 so that the butted portions of the four corners of the inner frame 18 temporarily attached in the shape of a frame match without gaps. The cut portion 58 may be a cut portion 58 in which one of the abutting portions is cut out in an L shape. After the inner frame 18 is temporarily mounted, the dew-proof heater 35 is press-fitted and mounted in the heater mounting groove 36.

各外枠１９Ａ・１９Ｂ・１９Ｃ・１９Ｄは、条材を所定寸法に切断加工して得られ、組付け時において各外枠１９Ａ・１９Ｂ・１９Ｃ・１９Ｄの突き合わせ部分が合致するようにプレス加工が施され整形されている。図４に示すように、上外枠１９Ａおよび下外枠１９Ｂは前面壁４２の左右端に、基端枠１６および先端枠１７の前面壁４２が接合されるＬ字状の連結部５９がそれぞれ切欠き形成されている。さらに、下枠１５の下外枠１９Ｂには外周面壁４１の右端部に、外枠１９を内枠１８に対してスライド連結形態で連結する際に、一対の係合リブ５１が当接するのを回避する逃げ切欠き部６０が、一対の係合リブ５１に対応する位置にそれぞれ切欠き形成されている。逃げ切欠き部６０の近傍の外周面壁４１には、規制壁４５、座壁４６、および規制リブ５３が当接するのを回避する逃げ切欠き部６１が、前記各部材に対応する位置にそれぞれ切欠き形成されている。基端外枠１９Ｃおよび先端外枠１９Ｄは、上外枠１９Ａおよび下外枠１９Ｂの外周面壁４１と干渉するのを回避するために、規制壁４５、座壁４６、一対の係合リブ５１、および規制リブ５３が外周面壁４１の厚み寸法分だけ切除されている。両外枠１９Ｂ・１９Ｃの上下端にはビス５６用のビス孔５７がそれぞれ開設されている。なお、符号６２は揺動軸４を軸支する軸受体（図示していない）が装着される軸受体用の装着孔である。 Each outer frame 19A, 19B, 19C, 19D is obtained by cutting a strip to a predetermined size, and is pressed so that the butt portions of the outer frames 19A, 19B, 19C, 19D match at the time of assembly. It has been given and shaped. As shown in FIG. 4, the upper outer frame 19A and the lower outer frame 19B have L-shaped connecting portions 59 to which the base end frame 16 and the front wall 42 of the tip frame 17 are joined to the left and right ends of the front wall 42, respectively. Notches are formed. Further, when the outer frame 19 is connected to the lower outer frame 19B of the lower frame 15 in a slide-connected form with the right end of the outer peripheral surface wall 41, a pair of engaging ribs 51 abut against each other. The escape cutout portion 60 to be avoided is formed at a position corresponding to the pair of engaging ribs 51, respectively. On the outer peripheral surface wall 41 in the vicinity of the clearance notch 60, the clearance cutout 61 for avoiding contact with the regulation wall 45, the seat wall 46, and the regulation rib 53 is cut at a position corresponding to each of the members. It is notched and formed. The base end outer frame 19C and the tip outer frame 19D have a regulating wall 45, a seat wall 46, and a pair of engaging ribs 51 in order to avoid interfering with the outer peripheral surface wall 41 of the upper outer frame 19A and the lower outer frame 19B. And the regulation rib 53 is cut off by the thickness dimension of the outer peripheral surface wall 41. Screw holes 57 for screws 56 are provided at the upper and lower ends of both outer frames 19B and 19C, respectively. Reference numeral 62 is a mounting hole for the bearing body to which the bearing body (not shown) that supports the swing shaft 4 is mounted.

先に説明したように本実施例においては、外枠１９は内枠１８に対して、圧嵌連結形態、またはスライド連結形態のどちらでも組付けることができるので、作業者はいずれかの連結形態を選択して縁枠８の組付け作業を行うことができる。先に圧嵌連結形態による内枠１８に対する外枠１９の連結方法を説明する。図８に示すように、後側の枠連結構造５０の係合溝５２に係合リブ５１を差し込むように係合させて、係合リブ５１と係合溝５２を内枠１８の長手方向に仮係合させる。この状態で仮係合させた枠連結構造５０を仮係合支点６４として、外枠１９を仮係合支点６４の回りに回動（先端外枠１９Ｄについては図８に向かって時計まわり）させて、前側の枠連結構造５０の係合リブ５１と係合溝５２を圧嵌係合させる。このとき、内枠ベース２２から片持ち状に突設された前壁２３および後壁２４は、大きく撓み変形させることができるので、圧嵌係合に必要な力を軽減することができる。 As described above, in the present embodiment, the outer frame 19 can be assembled to the inner frame 18 in either the press-fitting connection form or the slide connection form, so that the operator can attach either of the connection forms. Can be selected to perform the assembly work of the edge frame 8. First, a method of connecting the outer frame 19 to the inner frame 18 by the press-fitting connection form will be described. As shown in FIG. 8, the engaging rib 51 is engaged so as to be inserted into the engaging groove 52 of the rear frame connecting structure 50, and the engaging rib 51 and the engaging groove 52 are engaged in the longitudinal direction of the inner frame 18. Temporarily engage. The frame connecting structure 50 temporarily engaged in this state is used as the temporary engagement fulcrum 64, and the outer frame 19 is rotated around the temporary engagement fulcrum 64 (the tip outer frame 19D is clockwise toward FIG. 8). Then, the engaging rib 51 of the frame connecting structure 50 on the front side and the engaging groove 52 are press-fitted and engaged. At this time, since the front wall 23 and the rear wall 24 projecting from the inner frame base 22 in a cantilever shape can be greatly flexed and deformed, the force required for press-fitting engagement can be reduced.

図９に各外枠１９Ａ〜１９Ｄをすべて圧嵌連結形態で連結する際の組付け手順の一例について説明する。ここでは、まず先端外枠１９Ｄを連結し（図９（ａ））、次に基端外枠１９Ｃを連結し（図９（ｂ））、次に上外枠１９Ａを連結し（図９（ｃ））、最後に下外枠１９Ｂを連結して（図９（ｄ））、縁枠８を組付けた。すべての外枠１９Ａ〜１９Ｄを圧嵌連結形態で連結する場合には、とくに連結順序は限定されずどのような順序でも縁枠８を組付けることができる。 FIG. 9 describes an example of an assembling procedure when all the outer frames 19A to 19D are connected in a pressure-fitting connection form. Here, the tip outer frame 19D is first connected (FIG. 9 (a)), then the base end outer frame 19C is connected (FIG. 9 (b)), and then the upper outer frame 19A is connected (FIG. 9 (FIG. 9). c)), Finally, the lower outer frame 19B was connected (FIG. 9 (d)), and the edge frame 8 was assembled. When all the outer frames 19A to 19D are connected in a pressure-fitting connection form, the connection order is not particularly limited, and the edge frame 8 can be assembled in any order.

続いて、スライド連結形態による内枠１８に対する外枠１９の連結方法を説明する。上枠１４の内枠１８に上外枠１９Ａを連結するときは、図１０（ａ）に示すように、内枠１８の右端に上外枠１９Ａの左端を正対させ、２組の枠連結構造５０の係合リブ５１と係合溝５２が互いに係合するように位置合わせしたうえで、上外枠１９Ａを左側に向かってスライドさせ、係合溝５２に係合リブ５１を差込み係合させながら、上外枠１９Ａを右端（係合始端）から左端（係合終端）までスライドさせればよい。他の下外枠１９Ｂ、基端外枠１９Ｃ、先端外枠１９Ｄにおいても、内枠１８の端部に各外枠１９Ｂ・１９Ｃ・１９Ｄの端部を正対させ、係合リブ５１と係合溝５２を位置合わせしたうえで、係合先端から係合終端に向かってスライドさせればよい。 Subsequently, a method of connecting the outer frame 19 to the inner frame 18 by the slide connection form will be described. When connecting the upper outer frame 19A to the inner frame 18 of the upper frame 14, as shown in FIG. 10A, the left end of the upper outer frame 19A faces the right end of the inner frame 18 and two sets of frames are connected. After aligning the engaging rib 51 and the engaging groove 52 of the structure 50 so as to engage with each other, the upper outer frame 19A is slid toward the left side, and the engaging rib 51 is inserted into the engaging groove 52 and engaged. The upper outer frame 19A may be slid from the right end (engagement start end) to the left end (engagement end) while allowing the upper outer frame 19A to slide. Also in the other lower outer frame 19B, base end outer frame 19C, and tip outer frame 19D, the ends of the outer frames 19B, 19C, and 19D are made to face the end of the inner frame 18 and engaged with the engaging rib 51. After aligning the groove 52, it may be slid from the engagement tip toward the engagement end.

図１０に各外枠１９Ａ〜１９Ｄをすべてスライド連結形態で連結する際の組付け手順の一例について説明する。ここでは、まず上外枠１９Ａを連結し（図１０（ａ））、次に基端外枠１９Ｃを連結し（図１０（ｂ））、次に下外枠１９Ｂを連結し（図１０（ｃ））、最後に先端外枠１９Ｄを連結して（図１０（ｄ））、縁枠８を組付けた。なお、上外枠１９Ａと下外枠１９Ｂの連結順序は逆であってもよく、上外枠１９Ａと下外枠１９Ｂの連結の前に基端外枠１９Ｃを連結してあってもよい。 FIG. 10 will explain an example of an assembling procedure when all the outer frames 19A to 19D are connected in a slide connection form. Here, the upper outer frame 19A is first connected (FIG. 10 (a)), then the base end outer frame 19C is connected (FIG. 10 (b)), and then the lower outer frame 19B is connected (FIG. 10 (FIG. 10). c)) Finally, the tip outer frame 19D was connected (FIG. 10 (d)), and the edge frame 8 was assembled. The order of connecting the upper outer frame 19A and the lower outer frame 19B may be reversed, and the base end outer frame 19C may be connected before the connection of the upper outer frame 19A and the lower outer frame 19B.

スライド連結形態による連結時、枠連結構造５０は、前後に離れた前壁２３と後壁２４に設けられ、さらに、外枠１９は外周面壁４１と前面壁４２とで構成される簡素なＬ字状に形成されているので、２組の枠連結構造５０を目視しやすく、従って、差込み係合開始時の係合リブ５１と係合溝５２との位置合わせを容易に行える。また、前壁２３および後壁２４のそれぞれが内枠ベース２２から片持ち状に突設されているので、係合リブ５１と係合溝５２と間に隙間ができるように前壁２３および後壁２４を僅かに撓み変形させることで、両者５１・５２が摺接することに起因する摩擦抵抗力を低減できる。従って、摩擦抵抗力が最大となる係合終端付近においても上外枠１９Ａ（外枠１９）の差込み係合をスムーズに行える。 At the time of connection by the slide connection form, the frame connection structure 50 is provided on the front wall 23 and the rear wall 24 separated from each other in the front-rear direction, and the outer frame 19 is a simple L-shape composed of the outer peripheral surface wall 41 and the front wall 42. Since it is formed in a shape, it is easy to visually recognize the two sets of frame connecting structures 50, and therefore, the alignment of the engaging rib 51 and the engaging groove 52 at the start of the insertion engagement can be easily performed. Further, since each of the front wall 23 and the rear wall 24 is cantilevered from the inner frame base 22, the front wall 23 and the rear wall 23 and the rear wall 23 are provided with a gap between the engaging rib 51 and the engaging groove 52. By slightly bending and deforming the wall 24, the frictional resistance force caused by the sliding contact between the two 51 and 52 can be reduced. Therefore, the insertion engagement of the upper outer frame 19A (outer frame 19) can be smoothly performed even in the vicinity of the engagement end where the frictional resistance force is maximized.

本実施例においては、すべての外枠１９Ａ〜１９Ｄをスライド連結形態で連結する場合には、最後に先端外枠１９Ｄを連結する必要がある。これは、下外枠１９Ｂの外周面壁４１の右端に、逃げ切欠き部６０・６１を形成したためである。例えば、上、下、および先端の３辺の各外枠１９Ａ・１９Ｂ・１９Ｄを内枠１８に連結した状態では、残る基端枠１６の内枠１８の両端面が隣り合う上下の枠１４・１５の内枠１８に連結された上下の外枠１９Ａ・１９Ｂの外周面壁４１で覆われて、係合リブ５１と係合溝５２とを互いに係合させることができない。しかし、先端外枠１９Ｄを最後に連結させることで、逃げ切欠き部６０・６１を介して問題なく係合リブ５１と係合溝５２とを互いに係合させることができる。なお、下外枠１９Ｂの外周面壁４１の両端に逃げ切欠き部６０・６１を切欠き形成した場合には、基端外枠１９Ｃまたは先端外枠１９Ｄのいずれかを最後に連結すればよい。上外枠１９Ａの外周面壁４１の両端にも逃げ切欠き部６０・６１を切欠き形成することができる。 In this embodiment, when all the outer frames 19A to 19D are connected in the slide connection form, it is necessary to connect the tip outer frame 19D at the end. This is because the escape cutout portions 60 and 61 are formed at the right end of the outer peripheral surface wall 41 of the lower outer frame 19B. For example, in a state where the outer frames 19A, 19B, and 19D on the three sides of the upper, lower, and tip are connected to the inner frame 18, the upper and lower frames 14 in which both end faces of the inner frame 18 of the remaining base end frame 16 are adjacent to each other. The engaging rib 51 and the engaging groove 52 cannot be engaged with each other because they are covered with the outer peripheral surface walls 41 of the upper and lower outer frames 19A and 19B connected to the inner frame 18 of 15. However, by finally connecting the tip outer frame 19D, the engaging rib 51 and the engaging groove 52 can be engaged with each other without any problem via the escape cutout portions 60 and 61. When the escape cutout portions 60 and 61 are notched at both ends of the outer peripheral surface wall 41 of the lower outer frame 19B, either the base end outer frame 19C or the tip outer frame 19D may be connected last. Relief notches 60 and 61 can also be formed at both ends of the outer peripheral surface wall 41 of the upper outer frame 19A.

続いて、圧嵌係合に比較的強い力が必要な長辺側の基端外枠１９Ｃおよび先端外枠１９Ｄをスライド連結形態で連結し、残る上外枠１９Ａと下外枠１９Ｂを圧嵌連結形態で連結する際の組付け手順の一例について説明する。ここでは、まず先端外枠１９Ｃをスライド連結形態で連結し（図１１（ａ））、次に上外枠１９Ａを圧嵌連結形態で連結し（図１１（ｂ））、次に下外枠１９Ｂを圧嵌連結形態で連結し（図１１（ｃ））、最後に先端外枠１９Ｄをスライド連結形態で連結して（図１１（ｄ））、縁枠８を組付けた。なお、上外枠１９Ａと下外枠１９Ｂの連結順序は逆であってもよく、上外枠１９Ａと下外枠１９Ｂの連結の前に基端外枠１９Ｃを連結してあってもよい。最後に先端外枠１９Ｄを連結する理由は、上記と同様であるので省略する。 Subsequently, the base end outer frame 19C and the tip outer frame 19D on the long side, which require a relatively strong force for press-fitting engagement, are connected in a slide-connected form, and the remaining upper outer frame 19A and lower outer frame 19B are press-fitted. An example of the assembling procedure when connecting in the connecting form will be described. Here, the tip outer frame 19C is first connected in a slide connection form (FIG. 11 (a)), then the upper outer frame 19A is connected in a pressure-fitting connection form (FIG. 11 (b)), and then the lower outer frame is connected. 19B was connected in a pressure-fitting connection form (FIG. 11 (c)), and finally the tip outer frame 19D was connected in a slide connection form (FIG. 11 (d)), and the edge frame 8 was assembled. The order of connecting the upper outer frame 19A and the lower outer frame 19B may be reversed, and the base end outer frame 19C may be connected before the connection of the upper outer frame 19A and the lower outer frame 19B. Finally, the reason for connecting the tip outer frame 19D is the same as above, and is omitted.

上記のいずれかの手順で扉本体７に縁枠８を組付けたのちは、４箇所のビス５６をねじ込んで、各外枠１９Ａ・１９Ｂ・１９Ｃ・１９Ｄを互いに締結固定することにより、縁枠８の組付けが完了する。こののち、揺動軸４を軸支する上下の軸受体、ハンドル９、およびマグネットパッキン３３を固定して、ガラス扉３の組付けが完了する。 After assembling the edge frame 8 to the door body 7 by any of the above procedures, the edge frames are screwed in at four places and the outer frames 19A, 19B, 19C, and 19D are fastened and fixed to each other. Assembly of 8 is completed. After that, the upper and lower bearing bodies, the handle 9, and the magnet packing 33 that support the swing shaft 4 are fixed, and the assembly of the glass door 3 is completed.

以上のように、本実施例に係るショーケース用ガラス扉によれば、内枠１８に対して外枠１９を連結するときの枠連結構造５０の連結形態として、圧嵌連結形態と、スライド連結形態とのいずれかを選択可能に構成した。こうしたガラス扉によれば、すべての枠１４・１５・１６・１７において圧嵌連結形態で連結できる作業者であれば、外枠１９を内枠１８に素早く簡便に組付けることができ、一部圧嵌連結形態での連結が困難な作業者であれば、当該部分をスライド連結形態で連結することで、外枠１９を内枠１８に簡便に組付けることができる。以上のように、本実施例によれば、内枠１８に対する外枠１９の連結作業を行う作業者に適した連結形態を選択して組付けを行うことができるので、外枠１９を内枠１８により簡便に組付けることが可能であり、従って縁枠８の組付け性に優れたショーケース用ガラス扉とすることができる。 As described above, according to the glass door for the showcase according to the present embodiment, as the connection form of the frame connection structure 50 when the outer frame 19 is connected to the inner frame 18, a pressure fitting connection form and a slide connection form are used. It is configured so that either one of the forms can be selected. According to such a glass door, a worker who can connect all the frames 14, 15, 16, and 17 in a pressure-fitting connection form can quickly and easily assemble the outer frame 19 to the inner frame 18, and some of them. A worker who has difficulty in connecting in the press-fitting connection form can easily assemble the outer frame 19 to the inner frame 18 by connecting the portions in the slide connection form. As described above, according to the present embodiment, the outer frame 19 can be assembled by selecting a connection form suitable for the worker who connects the outer frame 19 to the inner frame 18. Since it can be easily assembled by 18, it is possible to obtain a glass door for a showcase having excellent assembling property of the edge frame 8.

上記の実施例以外に、連結部５９は基端外枠１９Ｃおよび先端外枠１９Ｄに形成することができる。この場合には、逃げ切欠き部６０・６１は基端外枠１９Ｃあるいは先端外枠１９Ｄに形成する。圧嵌連結形態、およびスライド連結形態による外枠１９の組付け順序は、上記実施例で説明した順序に限られない。内枠ベース２２はクランク状に形成したが、第１ベース壁２５と第３ベース壁２７が扉本体７の各辺部における周端面に密着するように両壁２５・２７を直線状に形成して、内枠１８を断面Ｅ字状に形成することもできる。扉本体７は３層の積層ガラスである必要はなく、２層あるいは４層以上の積層ガラスで構成できる。 In addition to the above embodiments, the connecting portion 59 can be formed on the base end outer frame 19C and the tip outer frame 19D. In this case, the escape cutout portions 60 and 61 are formed in the base end outer frame 19C or the tip outer frame 19D. The order of assembling the outer frame 19 by the press-fitting connection form and the slide connection form is not limited to the order described in the above embodiment. The inner frame base 22 is formed in a crank shape, but both walls 25 and 27 are formed in a straight line so that the first base wall 25 and the third base wall 27 are in close contact with the peripheral end faces at each side of the door body 7. The inner frame 18 can also be formed in an E-shaped cross section. The door body 7 does not have to be a three-layer laminated glass, and may be composed of two layers or four or more layers of laminated glass.

７扉本体
８縁枠
１０ガラス板
１４上枠
１５下枠
１６基端枠
１７先端枠
１８内枠
１９外枠
１９Ａ上外枠
１９Ｂ下外枠
２２内枠ベース
２３前壁
２４後壁
２５第１ベース壁
２６第２ベース壁
２７第３ベース壁
２８前挟持壁
２９後挟持壁
３０シール体
３５防露ヒーター
３６ヒーター装着溝
４１外周面壁
４２前面壁
５０枠連結構造
５１係合リブ
５２係合溝
５９連結部
６０逃げ切欠き部
６４仮係合支点 7 Door body 8 Edge frame 10 Glass plate 14 Upper frame 15 Lower frame 16 Base end frame 17 Tip frame 18 Inner frame 19 Outer frame 19A Upper outer frame 19B Lower outer frame 22 Inner frame base 23 Front wall 24 Rear wall 25 First base Wall 26 2nd base wall 27 3rd base wall 28 Front holding wall 29 Rear holding wall 30 Seal body 35 Dew-proof heater 36 Heater mounting groove 41 Outer peripheral wall 42 Front wall 50 Frame connection structure 51 Engagement rib 52 Engagement groove 59 Connection Part 60 Escape notch part 64 Temporary engagement fulcrum

Claims

The door body (7) including the glass plate (10), the upper frame (14), the lower frame (15), the base end frame (16), and the tip frame (17) fixed to the four peripheral edges of the door body (7). ) Is a swing-type showcase glass door provided with an edge frame (8).
Each frame (14, 15, 16, 17) is made of an inner frame (18) made of a resin strip material attached to the peripheral edge of the door body (7) and a metal covering the outer surface of the inner frame (18). It is composed of an outer frame (19) made of strips.
The inner frame (18) has an inner frame base (22) facing the peripheral end surface of the door body (7), and a front wall (23) and a rear wall (24) connected to the front and rear of the inner frame base (22), respectively. ) And
The outer frame (19) has an outer peripheral surface wall (41) that covers the outer peripheral surface of the inner frame (18) and a front wall (42) that is connected to the front end of the outer peripheral surface wall (41) and covers the front surface of the inner frame (18). It is formed in an L shape with and
And an inner frame (18) is an outer frame (19), are connected through two pairs of the frame connecting structure that is provided between the two frames (18, 19) (50),
Frame connection structure (50), Made up out with engagement ribs (51) which engage with each other with the engaging groove (52),
Engagement grooves (52) are formed in recesses in the front wall (23) and the rear wall (24) of the inner frame (18), and are engaged with the inner surfaces of the outer peripheral surface wall (41) and the front wall (42) of the outer frame (19). A joint rib (51) is projected to form a frame connecting structure (50) between the front wall (23) and the front wall (42) and between the rear wall (24) and the outer peripheral wall (41). Each is provided,
As a connection form of the frame connection structure (50) when the outer frame (19) is connected to the inner frame (18).
The frame connecting structure (50) is temporarily engaged in a state where the engaging rib (51) and the engaging groove (52) of the set of frame connecting structures (50) are temporarily engaged in the longitudinal direction of the inner frame (18). By rotating the outer frame (19) around the engaged temporary engagement fulcrum (64), the engaging rib (51) and the engaging groove (52) of the remaining frame connecting structure (50) are pressed against each other. Press-fitting connection form to be fitted and engaged, and
The outer frame (19) is slid from one end to the other end of the inner frame (18) in a state where the engaging rib (51) and the engaging groove (52) of each frame connecting structure (50) are engaged with each other. Therefore, it is possible to select either a slide connection form in which the engagement rib (51) and the engagement groove (52) of each frame connection structure (50) are inserted and engaged .
At both ends of the front wall (42) of either the outer frame (19.19) of the upper and lower frames (14.15) or the outer frame (19/19) of the base end and tip frames (16.17). , L-shaped connecting portions (59) to which the other front wall (42) is joined are formed by notches, respectively.
Of the outer frames (19 and 19) on which the connecting portion (59) is formed, the frame connecting structure (50) is connected to one end of the outer peripheral surface wall (41) of at least one of the outer frames (19) in a slide connecting form. A glass door for a showcase, characterized in that a relief notch (60) is provided to prevent the engaging rib (51) from coming into contact with the outer peripheral surface wall (41).

The door body (7) is formed in a rectangular shape that is long vertically.
Connecting portions (59) are notched at both ends of the front wall (42) of the outer frame (19A / 19B) of the upper and lower frames (14.15) on the short side.
The glass door for a showcase according to claim 1 , wherein an escape notch (60) is provided at one end of an outer peripheral surface wall (41) of the outer frame (19B) of the lower frame (15).

The inner frame base (22) has a first base wall (25) that is in close contact with the peripheral end surface of each side of the door body (7) and a peripheral end surface of the door body (7) at the front end of the first base wall (25). The second base wall (26) provided in the direction approaching the second base wall (26) and the third base wall (27) provided forward at the continuous end of the second base wall (26) are formed in a crank shape.
A front wall (23) is provided at the tip of the third base wall (27) in a direction approaching the peripheral end surface of the door body (7), and from the peripheral end surface of the door body (7) at the tip of the first base wall (25). According to claim 1 or 2, a rear wall (24) is provided so as to be separated from each other, and each of the front wall (23) and the rear wall (24) is cantilevered from the inner frame base (22). The listed glass door for the showcase.

A seal body (30) is provided between the door body (7) and the inner frame (18) to prevent dew condensation from entering the inside of the edge frame (8).
The inner frame (18) is provided with a pair of front and rear holding walls (28.29) that hold the front and back of the door body (7), and a sealing body (30) is integrally provided on each holding wall (28/29). The glass door for a showcase according to any one of claims 1 to 3.

A dew-proof heater (35) for preventing dew condensation on the surface of the edge frame (8) is mounted in the heater mounting groove (36) provided in the inner frame (18).
The show according to any one of claims 1 to 4, wherein a part of the dew-proof heater (35) is in contact with the outer frame (19) in a state where the outer frame (19) is connected to the inner frame (18). Glass door for the case.

The show according to claim 5 , wherein the dew-proof heater (35) is mounted in the heater mounting groove (36) provided on the end surface of the rear wall (24) on the side away from the peripheral end surface of the door body (7). Glass door for the case .