JP2004251037A - Roof fixing device, and fixing structure using the same - Google Patents

Roof fixing device, and fixing structure using the same Download PDF

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JP2004251037A
JP2004251037A JP2003043464A JP2003043464A JP2004251037A JP 2004251037 A JP2004251037 A JP 2004251037A JP 2003043464 A JP2003043464 A JP 2003043464A JP 2003043464 A JP2003043464 A JP 2003043464A JP 2004251037 A JP2004251037 A JP 2004251037A
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solar cell
roof
cell module
fixing
pressing member
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JP4099083B2 (en
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Hidenori Nakabayashi
秀則 中林
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Kyocera Corp
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Kyocera Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
    • F24S25/60—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules
    • F24S25/63—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules for fixing modules or their peripheral frames to supporting elements
    • F24S25/634—Clamps; Clips
    • F24S25/636—Clamps; Clips clamping by screw-threaded elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
    • F24S25/20—Peripheral frames for modules
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
    • F24S25/30—Arrangement of stationary mountings or supports for solar heat collector modules using elongate rigid mounting elements extending substantially along the supporting surface, e.g. for covering buildings with solar heat collectors
    • F24S25/33—Arrangement of stationary mountings or supports for solar heat collector modules using elongate rigid mounting elements extending substantially along the supporting surface, e.g. for covering buildings with solar heat collectors forming substantially planar assemblies, e.g. of coplanar or stacked profiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
    • F24S25/60—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules
    • F24S2025/6003—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules by clamping
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/10—Photovoltaic [PV]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/47—Mountings or tracking

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Photovoltaic Devices (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixing structure which firmly fixes solar battery modules to a roof without increasing the strength of a frame of each solar battery module in order to stand load imposed thereon, and positively and simply implements electric conduction between the solar battery modules. <P>SOLUTION: The fixing structure is formed of a base having linear rail grooves each having an engaging opening, a first pressing member for pressing a peripheral portion of the solar battery module arranged on the base and firmly abutting the former on the latter, a second pressing member for electrically conducting the peripheral portion of the solar battery module arranged on the base, and clamping members movable along the rail grooves, for fixing the first and second pressing members to the base while engaging with the engaging openings. Herein an abutting portion of the second pressing member, to abut on the solar battery module, is electrically connected to the peripheral portion of the solar battery module, to thereby achieve grounding. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、太陽電池モジュールを、住宅の屋根に設置する際に用いる屋根用固定装置及びそれを用いた固定構造に関するものである。
【０００２】
【従来の技術】
近年、地球環境問題への関心の高まりとともに、自然エネルギーを利用した新エネルギー技術のひとつとして、太陽光発電システムが注目され、その実用化が加速されてきている。太陽光発電システムは、その構成要素である太陽電池により太陽光エネルギーを電力に変換して利用するものである。
【０００３】
本出願人は、家屋等の屋根と一体的に多数の太陽電池モジュールを取りつける場合、係止用開口部を有した直線状のレール溝を設けた基台と該基台上に配置された前記太陽電池モジュールの周縁部を押圧して当接固定するための押圧部材と前記レール溝に沿って移動可能でかつ前記係止用開口部に係合させながら前記押圧部材を固定するための締結部材とを備えてなる屋根固定装置を提案している。
【０００４】
これは、図４（ｂ）に示すように、屋根上に固定装置Ｋ（Ｋ１〜Ｋ８）を多数配置して太陽電池モジュールＰ（Ｐ１〜Ｐ２）を屋根上に配する場合、図４（ａ）に示すように、屋根用固定装置Ｋの基台１上に配置された押圧部材４をボルト等で締め付けることにより、前記太陽電池モジュールＰのフレーム部材１６Ａ、１６Ｂを押圧して当接固定されるようにし、前記基台１のレール溝に沿って前記押圧部材を移動可能とすることで屋根用固定装置Ｋの設置位置の許容範囲が大きくなり、施工性が向上し、また、縦桟や横桟を不要として部材の削減を図るものである（特許文献１を参照）。
【０００５】
また、このような固定装置において、一つの係止部で２枚以上の太陽電池モジュールを系止すると同時に前記押圧部材で、太陽電池モジュールのフレームに施されているアルマイト皮膜やクリア塗装皮膜を破ることにより、屋根傾斜方向の太陽電池モジュールどうしを電気的に導通させることを提案した。
【０００６】
【特許文献１】
特願２００１−２９４０５１号
【０００７】
【発明が解決しようとする課題】
しかしながら、図６に示すように、太陽電池モジュールのフレーム部材１６Ａ、１６Ｂに施されているアルマイト皮膜やクリア塗装皮膜を破るために、押圧部材に鋭凸状の導通部４ｃが形成されており、当該導通部４ｃでフレーム部材１６Ａ、１６Ｂを押圧する構造上、フレーム部材１６Ａ、１６Ｂの押えが点接触となっている。このような状態で、太陽電池モジュールに一定以上の風荷重が掛かった場合、実験によれば風荷重が太陽電池モジュールＰを持ち上げる方向に作用すると、太陽電池モジュール本体１５を構成しているガラスが撓み、太陽電池モジュールのフレーム部材１６Ａ、１６Ｂが撓む。この時押圧部材４が導通部４ｃで点接触で押圧して当接固定しているため、フレーム部材が押圧部材から抜け出す方向に力が作用し、フレーム部材の撓みが増大しフレーム部材がガラス面から外れてしまうといった不具合の恐れがあり、このため、太陽電池モジュールを構成するフレーム部材の強度を上げねばならない。これは、大型化や重量増といった問題に繋がる。
【０００８】
また、太陽電池モジュールのフレームに施されているアルマイト皮膜やクリア塗装皮膜を破るために、押圧部材に導通部４ｃが形成されており、当該導通部４ｃでフレーム部材１６を上から押圧するため、雨水などが当該押圧部に溜まりやすく、アルマイト皮膜やクリア塗装皮膜を破った部分に滞留する恐れがあり、腐食の進行の懸念があった。
【０００９】
そこで、本発明は上述の諸事情に鑑みてなされたものであり、太陽電池モジュールに想定以上の風荷重が掛かり、風荷重が太陽電池モジュールを持ち上げる方向に作用した場合でも押圧部材で太陽電池フレームを確実に押圧して当接固定でき、フレームの強度を上げることなくフレームの撓みを最小限に押さえることができ、太陽電池モジュールどうしを電気的に導通させても雨水等の影響による腐食の進行の無い屋根用固定装置及びそれを用いた固定構造を提案することを目的とする。
【００１０】
【課題を解決するための手段】
上記目的を達成するために、請求項１の屋根用固定装置は、平板状の太陽電池モジュールを屋根の上に固定するための屋根用固定装置であって、係止用開口部を有した直線状のレール溝を設けた基台と、該基台上に配置された前記太陽電池モジュールの周縁部を上側から押圧して当接固定するための第１の押圧部材と、前記太陽電池モジュールの周縁部を下側から押圧して当接固定するための、導電性材料からなる第２の押圧部材と、前記レール溝に沿って移動可能でかつ前記係止用開口部に係合させながら前記第１および第２の押圧部材を固定するための締着部材を備えて成り、前記第２の押圧部材における前記太陽電池モジュールとの当接部位を、前記太陽電池モジュールの周縁部と電気的に接続させ接地できるように成したことを特徴とする。
【００１１】
また、請求項２の固定構造は、少なくとも２辺が互いに背になる関係にある平面角形状をなす１以上の太陽電池モジュールに対し、請求項１に記載の屋根用固定装置を４個以上用いて屋根の上に固定された固定構造であって、前記屋根に、前記屋根用固定装置を前記レール溝の長手方向に対し直交する方向に、所定間隔をおいて複数設けた固定装置群を複数条に配設するとともに、前記固定装置群どうしの間に前記太陽電池モジュールの互いに平行な２辺部分が押圧して当接固定されるように配設したことを特徴とする。
【００１２】
かかる本発明の構成によれば、太陽電池モジュールが複数の段差を有し傾斜して設けられる屋根材の上に設置される場合において、長尺部材を何ら使用することなく、太陽電池モジュールを屋根上に容易にかつ安定して作業性良好に設置でき、しかも太陽電池モジュールをすべて設置した状態の外観を良好にすることが可能となる。また、太陽電池本体の設置を、確実かつ簡便に行なうことが可能となる。
【００１３】
さらに、太陽電池モジュールを太陽電池モジュールに想定以上の風荷重が掛かり、風荷重が太陽電池モジュールを持ち上げる方向に作用した場合でも、上側の第１の押圧部材には導通部を形成せずに、太陽電池モジュールの周縁部を強く押さえ込むことができるので、押圧部材で太陽電池フレームを確実に押圧して当接固定でき、フレームの強度を上げることなくフレームの撓みを最小限に押さえることができ、さらに、下側の第２の押圧部材を設けて、この第２の押圧部材に、導通部を設けているので、太陽電池モジュールどうしを電気的に導通させても雨水等の影響による腐食の進行の無い。
【００１４】
【発明の実施の形態】
以下、平板状の屋根設置体である太陽電池モジュールを屋根上に配設する場合を例にとり、本発明の実施形態を、模式的に図示した図面に基づいて詳細に説明する。
【００１５】
図１（ａ）、（ｂ）に本発明の屋根固定装置Ｋの組立手順を示す斜視図を示す。図１（ｂ）に示すように、本発明の屋根用固定装置Ｋは、係止用開口部３を有した直線状のレール溝２を１以上設けた板状の基台１と、この基台１上に配置された後記する太陽電池モジュールの周縁部を押圧して当接固定するための板状をなす第１の押圧部材４と、前記太陽電池モジュールの周縁部を電気的に導通させるための板状をなす第２の押圧部材５と、レール溝２に沿って移動可能でかつ係止用開口部３に係合させながら押圧部材４を固定するための締着部材であるボルト６、ナット７を備えて成る。
【００１６】
ここで、基台１は例えばアルミニウム等の軽量で強度に優れた金属材料で構成される。また、図１（ａ）に示すように、この基台１の左右両端部１ａにはレール溝２が少なくとも１以上、直線状に設けられ、基台１の中央部１ｂは溝（または凹部）に形成されており、この溝（または凹部）には後記する屋根材に固定するための釘孔１ｃである貫通孔が複数設けられている。レール溝２は図示のように２本とするのが構造が簡単であり、しかも堅固に押圧部材４を取りつけることができ望ましい。
【００１７】
また、レール溝２はその最上部に溝幅が急に狭くなった係止用開口部３が形成されているが、必ずしもレール溝２の最上部でなくともよく、溝幅が狭く押圧部材４を固定するためのボルト６の頭部６ａを係合させることができればよく、その場所は特定されるものではない。また、第１の押圧部材４と第２の押圧部材５はこれらで押圧する部材より硬く例えばステンレス等の導電性を有し強度的にも優れた金属材料（導電性材料）から構成される。第１の押圧部材４の縦横方向には後記する太陽電池モジュールを押圧して当接固定するための押圧部４ｂが太陽電池モジュールのフレームの周縁部に設けられた突起上の額の形状にそって面接触する様に形成され、太陽電池モジュールの周縁部を押圧する。さらに、第２の押圧部材５は第１の押圧部材４の下側に配置され太陽電池モジュールの周縁部を押圧するための押圧片５ａが設けられ、さらに、第２の押圧部材５は第１の押圧部材４で太陽電池モジュールを押圧して当接固定した後、第１の押圧部材４にボルト、ナットで締着することにより、前記押圧片５ａが太陽電池モジュールの周縁部を押圧するようにしている。
【００１８】
ここで、前記第２の押圧部材における当接部には、鋭凸状の導通部５ｂが設けられ、前記太陽電池モジュールにおける周縁部の表面に形成されている絶縁性被膜を突き破ることができるようになっている。これにより、第２の押圧部材と太陽電池モジュールの周縁部とが電気的に接続され接地できるようになっている。電気的な接地は、地上からの接地用配線を別途設け、第２の押圧部または前記基台１とこの配線を結合することによって可能である。
【００１９】
また、ボルト６は押圧部材４の貫通孔４ｄに挿通されナット７で締付けることにより、溝幅が急に狭くなった係止用開口部３によりボルト６の頭部６ａが係合され、押圧部材４は基台１に堅固に固定される。
【００２０】
さらに、図２（ａ）〜（ｃ）に示すように、基台１にはその中央部１ｂにビス８や釘を挿入するための貫通孔１ｃが形成されており、基台１はスレートなどの屋根材１０、屋根構造材１１及び垂木１２にビス８や釘等が入り込むことにより固定される。この際に、ビス８や釘を挿入する孔の防水を行うため、基台１と屋根材１０との間に例えばＥＰＤＭ（エチレン・プロピレン・ジエン・ラバー）等の弾性部材であるシール材７を介在させるとよい。基台１の下面にこのシール材７を貼着させるが、このシール材７の接着面は中央部が窪んだ形状になっており、シール材７をこの面に貼り付け、ビス８などを屋根材１０及び屋根構造材１１等に打ち込んだ際に、その圧力により基台１の貫通孔１ｃにシール材７が入り込むことで防水性能をいっそう高めている。
【００２１】
図３に屋根上に敷設された屋根材１に、屋根用固定装置の多数を配設した様子と、屋根用固定装置Ｋ１の拡大斜視図を示す。図３に示すように、多数の屋根用固定装置Ｋ（例えば屋根用固定装置Ｋ１〜Ｋ８）をレール溝２の長手方向に対し直交する方向に所定間隔を置いて、複数設けた固定装置群（例えば、屋根用固定装置Ｋ１〜Ｋ４で構成されるＫＡや屋根用固定装置Ｋ５〜Ｋ８で構成されるＫＢ）を複数条に配設するとともに、前記固定装置群どうしの間に太陽電池モジュールの互いに平行な２辺の部分が押圧して当接固定されるように配設されている。
【００２２】
また、図５に示すように、太陽電池モジュールＰを電気的に導通させ接地させる際には、太陽電池モジュールＰを固定する第２の押圧部材５の押圧片５ａを利用して、太陽電池モジュールＰのフレーム部材１６Ａ、１６Ｂに施されているアルマイト皮膜やクリア塗装膜等を破ることにより、屋根の流れ方向の太陽電池モジュールＰどうしを電気的に導通させることができ、太陽電池モジュールが漏電した際にも安全性を確保できる。この際、図５の実施形態によれば、真ん中の屋根固定装置Ｋ５〜８は屋根の流れ方向の隣接する太陽電池モジュールＰどうしを電気的に導通させるので、屋根の流れ方向に並ぶ太陽電池モジュールＰを支持する屋根固定装置（例えば、Ｋ１，２，５，６の組とＫ３，４，７，８の組）の各組について、１個の屋根固定装置が前記接地用配線に接続されていればよい。また、横方向の化粧板を、屋根の流れ方向に垂直な横方向に設ける場合、この化粧板を横方向の電気的な導通に利用することで、例えば、屋根固定装置のＫ１，２，５，６の組とＫ３，４，７，８の組の両組に対して、１個の屋根固定装置が前記接地用配線に接続されていればよい。
【００２３】
また、第２の押圧部材５は太陽電池モジュールＰの周縁部を下側から押圧し、太陽電池モジュールＰのフレーム部材１６に施されているアルマイト皮膜やクリア塗装膜等を破ることにより、アルマイト皮膜やクリア塗装膜等の破れた部位に雨水等がかからず雨水等による腐食の進行を防ぐことができる。
【００２４】
なお、本発明は、上記実施形態に限定されるものでなく、本発明の要旨を逸脱しない範囲で適宜変更し実施が可能である。
【００２５】
【発明の効果】
以上説明したように、本発明によれば、係止用開口部を有した直線状のレール溝を設けた基台と、該基台上に配置された前記太陽電池モジュールの周縁部を上側から押圧して当接固定するための第１の押圧部材と、前記太陽電池モジュールの周縁部を下側から押圧して当接固定するための、導電性材料からなる第２の押圧部材と、前記レール溝に沿って移動可能でかつ前記係止用開口部に係合させながら前記第１および第２の押圧部材を固定するための締着部材を備えて成ることから、前記基台のレール溝に沿って前記押圧部材を移動可能とすることで屋根用固定装置の設置位置の許容範囲が大きくなり、施工性が向上するので、太陽電池モジュールが複数の段差を有し傾斜して設けられる屋根材の上に設置される場合において、長尺部材を何ら使用することなく、太陽電池モジュールを屋根上に容易にかつ安定して作業性良好に設置でき、しかも太陽電池モジュールをすべて設置した状態の外観を良好にすることが可能となる。また、太陽電池本体の設置を、確実かつ簡便に行なうことが可能となる。
【００２６】
さらに、太陽電池モジュールを太陽電池モジュールに想定以上の風荷重が掛かり、風荷重が太陽電池モジュールを持ち上げる方向に作用した場合でも、上側の第１の押圧部材には導通部を形成せずに、太陽電池モジュールの周縁部を強く押さえ込むことができるので、押圧部材で太陽電池フレームを確実に押圧して当接固定でき、フレームの強度を上げることなくフレームの撓みを最小限に押さえることができ、さらに、下側の第２の押圧部材を設けて、この第２の押圧部材の方のみに導通部を設けることができるので、太陽電池モジュールどうしを電気的に導通させても雨水等の影響による腐食の進行の無い。
【００２７】
以上により、太陽電池モジュールの特性や外観を損なうことのない優れた固定構造を提供できる。
【図面の簡単な説明】
【図１】本発明に係る屋根用固定装置の組立の様子を模式的に説明する図であり、（ａ）は分解斜視図、（ｂ）は斜視図である。
【図２】本発明に係る屋根用固定装置を屋根に取付ける際の様子を模式的に説明する図であり、（ａ）（ｂ）は分解断面図、（ｃ）は断面図である。
【図３】本発明に係る屋根固定装置を屋根に配置した様子を模式的に説明する斜視図である。
【図４】従来の屋根用固定装置に太陽電池モジュールを取付けた様子を模式的に説明する図であり、（ａ）は屋根固定装置に太陽電池モジュールを取付けた状態の断面図、（ｂ）は屋根固定装置に太陽電池モジュールを取付けた状態の斜視図である。
【図５】本発明に係る屋根用固定装置の組立の様子を模式的に説明する断面図である。
【図６】従来の屋根固定装置と太陽電池モジュールに荷重が作用した様子を模式的に説明する断面図である。
【符号の説明】
１： 基台
１ａ：端部
１ｂ：中央部
１ｃ：釘孔
２： レール溝
３： 係止用開口部
４： 第１の押圧部材
４ｂ：押圧部
４ｃ：角部
４ｄ：貫通孔
５： 第２の押圧部材
５ａ：押圧片
６： ボルト（締着部材）
６ａ：ボルト頭部
７： ナット（締着部材）
８： シール材
１０：屋根材
１１：屋根下地材
１２：垂木
１５：太陽電池本体
１６Ａ、１６Ｂ：フレーム部材
Ｐ、Ｐ１、Ｐ２、Ｐ３、Ｐ４：太陽電池モジュール
Ｋ、Ｋ１、Ｋ２、Ｋ３、Ｋ４、Ｋ５、Ｋ６、Ｋ７、Ｋ８：屋根用固定装置[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a roof fixing device used when a solar cell module is installed on a roof of a house, and a fixing structure using the same.
[0002]
[Prior art]
In recent years, with increasing interest in global environmental issues, a photovoltaic power generation system has been attracting attention as one of new energy technologies using natural energy, and its practical use has been accelerated. The photovoltaic power generation system converts solar energy into electric power using a solar cell which is a component of the photovoltaic power generation system.
[0003]
When mounting a large number of solar cell modules integrally with a roof of a house or the like, the present applicant has a base provided with a linear rail groove having a locking opening and the base arranged on the base. A pressing member for pressing and abutting and fixing a peripheral portion of the solar cell module, and a fastening member movable along the rail groove and fixing the pressing member while being engaged with the locking opening. And has been proposed.
[0004]
This is because, as shown in FIG. 4B, when a large number of fixing devices K (K1 to K8) are arranged on the roof and the solar cell modules P (P1 and P2) are arranged on the roof, FIG. ), The pressing members 4 arranged on the base 1 of the roof fixing device K are tightened with bolts or the like, so that the frame members 16A and 16B of the solar cell module P are pressed and abutted and fixed. By allowing the pressing member to move along the rail groove of the base 1, the allowable range of the installation position of the roof fixing device K is increased, workability is improved, and The number of members is reduced by eliminating the need for horizontal rails (see Patent Document 1).
[0005]
Moreover, in such a fixing device, one or more locking portions stop two or more solar cell modules, and at the same time, the pressing member breaks an alumite film or a clear coating film applied to a frame of the solar cell module. Thus, it has been proposed that the solar cell modules in the roof inclination direction be electrically connected to each other.
[0006]
[Patent Document 1]
Japanese Patent Application No. 2001-294051 [0007]
[Problems to be solved by the invention]
However, as shown in FIG. 6, in order to break the alumite film and the clear coating film applied to the frame members 16A and 16B of the solar cell module, the pressing member is formed with a sharply convex conductive portion 4c, Due to the structure in which the conductive portions 4c press the frame members 16A and 16B, the pressing of the frame members 16A and 16B is in point contact. In such a state, when a wind load of a certain level or more is applied to the solar cell module, according to an experiment, when the wind load acts in a direction to lift the solar cell module P, the glass constituting the solar cell module body 15 is changed. The flexure causes the frame members 16A and 16B of the solar cell module to flex. At this time, since the pressing member 4 is pressed by point contact with the conducting portion 4c and fixedly abutted, a force acts in a direction in which the frame member comes out of the pressing member, the bending of the frame member increases, and the frame member becomes a glass surface. Therefore, there is a possibility that the frame member may come off the frame, and therefore, the strength of the frame member constituting the solar cell module must be increased. This leads to problems such as an increase in size and weight.
[0008]
Further, in order to break the alumite film or the clear coating film applied to the frame of the solar cell module, a conductive portion 4c is formed on the pressing member, and the conductive portion 4c presses the frame member 16 from above. Rainwater or the like easily accumulates in the pressing portion, and may accumulate in a portion where the alumite film or the clear coating film is broken, and there is a concern that corrosion may progress.
[0009]
Therefore, the present invention has been made in view of the above-described circumstances, and a solar cell module is pressed by a pressing member even when a wind load is applied to the solar cell module more than expected and the wind load acts in a direction to lift the solar cell module. Can be securely pressed and fixed, the flexure of the frame can be minimized without increasing the strength of the frame, and even if the solar cell modules are electrically connected, the progress of corrosion due to rainwater etc. It is an object of the present invention to propose a fixing device for a roof without any and a fixing structure using the same.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, a roof fixing device according to claim 1 is a roof fixing device for fixing a flat solar cell module on a roof, the straight line having a locking opening. A base provided with an annular rail groove, a first pressing member for pressing the peripheral portion of the solar cell module disposed on the base from above to abut and fix the peripheral portion, A second pressing member made of a conductive material for pressing the peripheral portion from below to abut and fix the peripheral portion, the second pressing member being movable along the rail groove and being engaged with the locking opening; A fastening member for fixing the first and second pressing members, wherein a contact portion of the second pressing member with the solar cell module is electrically connected to a peripheral portion of the solar cell module. The feature is that it can be connected and grounded To.
[0011]
Further, the fixing structure according to claim 2 uses four or more roof fixing devices according to claim 1 with respect to at least one solar cell module having a planar angle shape in which at least two sides are opposite to each other. A fixing structure fixed on the roof by a plurality of fixing devices provided on the roof at predetermined intervals in a direction orthogonal to the longitudinal direction of the rail groove. The solar cell module is disposed between the fixing device groups so that two parallel sides of the solar cell module are pressed and abutted and fixed between the fixing device groups.
[0012]
According to the configuration of the present invention, when the solar cell module is installed on a roof material that is provided with a plurality of steps and that is inclined, the solar cell module can be mounted on the roof without using any long member. It is possible to easily and stably install the solar cell module with good workability, and it is possible to improve the appearance when all the solar cell modules are installed. In addition, the solar cell main body can be reliably and easily installed.
[0013]
Furthermore, even if the wind load is applied to the solar cell module more than expected, and the wind load acts in a direction to lift the solar cell module, the first pressing member on the upper side does not form a conductive portion, Since the peripheral portion of the solar cell module can be strongly pressed down, the pressing member can securely press and fix the solar cell frame, and the bending of the frame can be suppressed to a minimum without increasing the strength of the frame. Furthermore, since the second pressing member on the lower side is provided and the conducting portion is provided on the second pressing member, even if the solar cell modules are electrically connected to each other, the progress of corrosion due to the influence of rainwater or the like occurs. Without.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings schematically illustrating a case where a solar cell module which is a flat roof installation body is disposed on a roof as an example.
[0015]
1A and 1B are perspective views showing an assembling procedure of the roof fixing device K of the present invention. As shown in FIG. 1 (b), a roof fixing device K of the present invention includes a plate-shaped base 1 provided with at least one linear rail groove 2 having an opening 3 for locking; A first pressing member 4 in the form of a plate for pressing and abuttingly fixing a peripheral portion of a solar cell module described later disposed on the table 1 and the peripheral portion of the solar cell module are electrically connected. Pressing member 5 having a plate-like shape and a bolt 6 serving as a fastening member that is movable along the rail groove 2 and fixes the pressing member 4 while engaging with the opening 3 for locking. , Nut 7.
[0016]
Here, the base 1 is made of a lightweight and strong metal material such as aluminum. As shown in FIG. 1 (a), at least one or more rail grooves 2 are linearly provided at both left and right end portions 1a of the base 1, and a central portion 1b of the base 1 is a groove (or recess). The groove (or the concave portion) is provided with a plurality of through holes as nail holes 1c for fixing to a roof material described later. It is desirable that the number of the rail grooves 2 be two as shown in the figure because the structure is simple and the pressing member 4 can be firmly mounted.
[0017]
The rail groove 2 is formed with a locking opening 3 having a sharply narrow groove width at the uppermost part thereof, but is not necessarily the uppermost part of the rail groove 2 and has a narrow groove width and a pressing member 4. It is sufficient that the head 6a of the bolt 6 for fixing the head can be engaged, and the location is not specified. Further, the first pressing member 4 and the second pressing member 5 are made of a metal material (conductive material) which is harder than the member pressed by them and has conductivity such as stainless steel and has excellent strength. In the vertical and horizontal directions of the first pressing member 4, a pressing portion 4b for pressing and abutting and fixing a solar cell module described later conforms to the shape of a forehead on a projection provided on a peripheral portion of a frame of the solar cell module. And presses the periphery of the solar cell module. Further, the second pressing member 5 is provided below the first pressing member 4 and is provided with a pressing piece 5a for pressing the peripheral portion of the solar cell module. After pressing the solar cell module with the pressing member 4 and fixing the solar cell module to the first pressing member 4, the pressing piece 5 a presses the peripheral portion of the solar cell module by tightening the first pressing member 4 with a bolt and a nut. I have to.
[0018]
Here, an abutting portion of the second pressing member is provided with a sharply convex conductive portion 5b so that the insulating film formed on the surface of the peripheral portion of the solar cell module can be broken through. It has become. Thereby, the second pressing member and the peripheral portion of the solar cell module are electrically connected and can be grounded. Electrical grounding is possible by separately providing a grounding wire from the ground and connecting this wire to the second pressing portion or the base 1.
[0019]
The bolt 6 is inserted into the through hole 4d of the pressing member 4 and tightened by the nut 7, so that the head 6a of the bolt 6 is engaged with the locking opening 3 whose groove width is sharply reduced, and the pressing member is pressed. 4 is firmly fixed to the base 1.
[0020]
Further, as shown in FIGS. 2 (a) to 2 (c), the base 1 is formed with a through hole 1c for inserting a screw 8 or a nail in a central portion 1b thereof. The screws 8, nails, and the like enter the roofing material 10, the roof structural material 11, and the rafter 12. At this time, in order to waterproof the holes into which the screws 8 and the nails are inserted, a sealing material 7 such as an elastic member such as EPDM (ethylene propylene diene rubber) is provided between the base 1 and the roofing material 10. It is good to intervene. The sealing material 7 is adhered to the lower surface of the base 1. The adhesion surface of the sealing material 7 has a concave shape at the center, and the sealing material 7 is adhered to this surface, and screws 8 and the like are attached to the roof. When the sealing material 7 is driven into the material 10 and the roof structural material 11 and the like, the sealing material 7 penetrates into the through hole 1c of the base 1 by the pressure, thereby further improving the waterproof performance.
[0021]
FIG. 3 shows a state in which a large number of roof fixing devices are arranged on the roof material 1 laid on the roof, and an enlarged perspective view of the roof fixing device K1. As shown in FIG. 3, a plurality of fixing devices K (for example, roof fixing devices K <b> 1 to K <b> 8) are provided at predetermined intervals in a direction orthogonal to the longitudinal direction of the rail groove 2. For example, KA including roof fixing devices K1 to K4 and KB) including roof fixing devices K5 to K8 are arranged in a plurality of rows, and the solar cell modules are mutually connected between the fixing device groups. The two parallel sides are arranged so as to be pressed and abutted and fixed.
[0022]
As shown in FIG. 5, when the solar cell module P is electrically connected and grounded, the pressing piece 5a of the second pressing member 5 for fixing the solar cell module P is used to make the solar cell module P By breaking the alumite film or clear coating film applied to the P frame members 16A and 16B, the solar cell modules P in the flow direction of the roof can be electrically connected to each other, and the solar cell module has a short circuit. In this case, safety can be ensured. In this case, according to the embodiment of FIG. 5, the roof fixing devices K5 to K8 in the middle electrically connect the adjacent solar cell modules P in the flow direction of the roof, and thus the solar cell modules arranged in the flow direction of the roof. One roof fixing device is connected to the ground wiring for each set of roof fixing devices (for example, a set of K1,2,5,6 and a set of K3,4,7,8) supporting P. Just do it. Further, when the decorative panel in the horizontal direction is provided in the horizontal direction perpendicular to the flow direction of the roof, the decorative panel is used for electrical conduction in the horizontal direction, for example, by using K1, 2, 5 of the roof fixing device. , 6 and K3, 4, 7, 8 as long as one roof fixing device is connected to the ground wiring.
[0023]
Further, the second pressing member 5 presses the peripheral portion of the solar cell module P from below to break the alumite film or the clear coating film applied to the frame member 16 of the solar cell module P, thereby forming an alumite film. Rainwater or the like is not applied to a broken portion such as a clear coating film or the like, and the progress of corrosion due to rainwater or the like can be prevented.
[0024]
It should be noted that the present invention is not limited to the above embodiment, and can be appropriately modified and implemented without departing from the gist of the present invention.
[0025]
【The invention's effect】
As described above, according to the present invention, a base provided with a linear rail groove having an opening for locking, and a peripheral portion of the solar cell module disposed on the base are viewed from above. A first pressing member for pressing and abutting and fixing; a second pressing member made of a conductive material for pressing and abutting and fixing the peripheral portion of the solar cell module from below; A clamping member that is movable along the rail groove and fixes the first and second pressing members while engaging with the locking opening; and a rail groove of the base. By allowing the pressing member to move along, the allowable range of the installation position of the roof fixing device is increased, and the workability is improved. Therefore, the roof in which the solar cell module has a plurality of steps and is provided at an inclination When installed on wood, Without al use, the solar cell modules can easily and placed stably workability good on the roof, yet it is possible to improve the appearance of the installed state of all the solar cell modules. In addition, the solar cell main body can be reliably and easily installed.
[0026]
Furthermore, even if the wind load is applied to the solar cell module more than expected, and the wind load acts in a direction to lift the solar cell module, the first pressing member on the upper side does not form a conductive portion, Since the peripheral portion of the solar cell module can be strongly pressed down, the pressing member can securely press and fix the solar cell frame, and the bending of the frame can be suppressed to a minimum without increasing the strength of the frame. Furthermore, since the lower second pressing member is provided, and the conductive portion can be provided only on the second pressing member, even if the solar cell modules are electrically connected to each other, they may be affected by rainwater or the like. No corrosion progress.
[0027]
As described above, it is possible to provide an excellent fixing structure without impairing the characteristics and appearance of the solar cell module.
[Brief description of the drawings]
FIGS. 1A and 1B are diagrams schematically illustrating an assembling state of a roof fixing device according to the present invention, wherein FIG. 1A is an exploded perspective view and FIG. 1B is a perspective view.
FIGS. 2A and 2B are diagrams schematically illustrating a state in which the roof fixing device according to the present invention is mounted on a roof, wherein FIGS. 2A and 2B are exploded cross-sectional views, and FIG.
FIG. 3 is a perspective view schematically illustrating a state in which the roof fixing device according to the present invention is arranged on a roof.
4A and 4B are diagrams schematically illustrating a state in which a solar cell module is attached to a conventional roof fixing device, wherein FIG. 4A is a cross-sectional view illustrating a state in which the solar cell module is attached to the roof fixing device, and FIG. FIG. 3 is a perspective view of a state where a solar cell module is attached to a roof fixing device.
FIG. 5 is a cross-sectional view schematically illustrating the manner of assembling the roof fixing device according to the present invention.
FIG. 6 is a cross-sectional view schematically illustrating a state in which a load acts on a conventional roof fixing device and a solar cell module.
[Explanation of symbols]
1: base 1a: end 1b: center 1c: nail hole 2: rail groove 3: locking opening 4: first pressing member 4b: pressing portion 4c: corner 4d: through hole 5: second Pressing member 5a: pressing piece 6: bolt (fastening member)
6a: bolt head 7: nut (fastening member)
8: Seal material 10: Roof material 11: Roof base material 12: Rafter 15: Solar cell bodies 16A, 16B: Frame members P, P1, P2, P3, P4: Solar cell modules K, K1, K2, K3, K4, K5, K6, K7, K8: Roof fixing device

Claims (2)

平板状の太陽電池モジュールを屋根の上に固定するための屋根用固定装置であって、係止用開口部を有した直線状のレール溝を設けた基台と、該基台上に配置された前記太陽電池モジュールの周縁部を上側から押圧して当接固定するための第１の押圧部材と、前記太陽電池モジュールの周縁部を下側から押圧して当接固定するための、導電性材料からなる第２の押圧部材と、前記レール溝に沿って移動可能でかつ前記係止用開口部に係合させながら前記第１および第２の押圧部材を固定するための締着部材とを備えて成り、前記第２の押圧部材における前記太陽電池モジュールとの当接部位を、前記太陽電池モジュールの周縁部と電気的に接続させ接地できるように成したことを特徴とする屋根用固定装置。A roof fixing device for fixing a flat solar cell module on a roof, comprising: a base provided with a linear rail groove having a locking opening; and a base provided on the base. A first pressing member for pressing and fixing the peripheral portion of the solar cell module from above, and a conductive member for pressing and fixing the peripheral portion of the solar cell module from below. A second pressing member made of a material, and a fastening member movable along the rail groove and fixing the first and second pressing members while being engaged with the locking opening. A fixing portion for a roof, wherein a contact portion of the second pressing member with the solar cell module is electrically connected to a peripheral portion of the solar cell module to be grounded. . 少なくとも２辺が互いに背になる関係にある平面角形状をなす１以上の太陽電池モジュールに対し、請求項１に記載の屋根用固定装置を４個以上用いて屋根の上に固定された固定構造であって、前記屋根に、前記屋根用固定装置を前記レール溝の長手方向に対し直交する方向に、所定間隔をおいて複数設けた固定装置群を複数条に配設するとともに、前記固定装置群どうしの間に前記太陽電池モジュールの互いに平行な２辺部分が押圧して当接固定されるように配設したことを特徴とする固定構造。A fixing structure fixed to a roof using at least four roof fixing devices according to claim 1, for at least one solar cell module having a planar angular shape in which at least two sides are in a relationship of being opposite to each other. And a plurality of fixing device groups provided with a plurality of fixing devices for the roof at predetermined intervals in a direction perpendicular to a longitudinal direction of the rail groove on the roof, and the fixing device. A fixing structure, wherein two parallel sides of the solar cell module are pressed and abutted and fixed between the groups.
JP2003043464A 2003-02-21 2003-02-21 Roof fixing device and fixing structure using the same Expired - Fee Related JP4099083B2 (en)

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