{
  "timeline": [
    {
      "date": "1971/4",
      "category": "会社設立",
      "region": "",
      "importance": 3,
      "event": "東邦精工株式会社を設立",
      "detail": "東京都目黒区で創業者寺町博が設立、工作機械部品・LMローラー・LMボールの販売を開始",
      "significance": "後の世界トップLMガイドメーカーTHKの源流",
      "source": "有価証券報告書"
    },
    {
      "date": "1972/4",
      "category": "新規事業|研究開発",
      "region": "",
      "importance": 3,
      "event": "LMガイド・ボールスプラインの販売を開始",
      "detail": "主力製品となる直動案内製品を投入",
      "significance": "直動案内分野で世界トップへの道を拓く製品群の出発点",
      "source": "有価証券報告書"
    },
    {
      "date": "1972/12",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "日新製作所を吸収合併",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1973/3",
      "category": "合弁設立",
      "region": "",
      "importance": 1,
      "event": "宮入バルブ製作所と共同出資でテーエチケーを設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1977/4",
      "category": "企業買収|設備投資",
      "region": "",
      "importance": 2,
      "event": "テーエチケーから製造部門を買収し甲府工場とする",
      "detail": "自社製造体制の本格構築",
      "significance": "自社一貫生産体制の起点",
      "source": "有価証券報告書"
    },
    {
      "date": "1979/9",
      "category": "新規事業",
      "region": "",
      "importance": 2,
      "event": "ボールねじ製造販売を開始",
      "detail": "",
      "significance": "直動部品ラインナップの拡充",
      "source": "有価証券報告書"
    },
    {
      "date": "1981/3",
      "category": "海外進出",
      "region": "米州",
      "importance": 3,
      "event": "米シカゴにTHK Americaを設立",
      "detail": "北米販売拠点の設立",
      "significance": "海外展開の起点・北米市場参入の足場",
      "source": "有価証券報告書"
    },
    {
      "date": "1982/7",
      "category": "新規事業",
      "region": "",
      "importance": 1,
      "event": "XYテーブル製造販売を開始",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1982/10",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "額面変更目的でテーエチケーに吸収合併",
      "detail": "1株500円から50円への変更目的、事業実体は継承",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1982/10",
      "category": "海外進出",
      "region": "欧州",
      "importance": 2,
      "event": "西独デュッセルドルフにTHK Europeを設立",
      "detail": "現THK GmbH",
      "significance": "欧州市場進出の起点",
      "source": "有価証券報告書"
    },
    {
      "date": "1984/1",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "商号をTHK株式会社に変更",
      "detail": "Toughness・High Quality・Knowhowを冠する社名",
      "significance": "LMガイド世界ブランドTHKの誕生",
      "source": "有価証券報告書"
    },
    {
      "date": "1984/2",
      "category": "企業買収|設備投資",
      "region": "",
      "importance": 2,
      "event": "大幸製作所を買収し岐阜工場とする",
      "detail": "生産拠点拡充",
      "significance": "生産能力の拡張",
      "source": "有価証券報告書"
    },
    {
      "date": "1985/4",
      "category": "組織再編|設備投資",
      "region": "",
      "importance": 2,
      "event": "東洋精工を吸収合併し三重工場・山口工場を新設",
      "detail": "LMガイド製造拠点の拡張",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1985/12",
      "category": "業務提携",
      "region": "",
      "importance": 1,
      "event": "大東製機（現THKインテックス）に資本参加し技術提携",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1987/6",
      "category": "新規事業|研究開発",
      "region": "",
      "importance": 2,
      "event": "インテリジェントアクチュエータ製造販売を開始",
      "detail": "メカトロ製品分野への参入",
      "significance": "直動部品からメカトロ一体化への展開",
      "source": "有価証券報告書"
    },
    {
      "date": "1988/1",
      "category": "合弁設立|設備投資",
      "region": "",
      "importance": 1,
      "event": "新潟県にTHK安田（現THK新潟）を共同出資で設立",
      "detail": "佐文工業所との合弁",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1988/4",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "THK販売を吸収合併",
      "detail": "販売体制の一本化",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1989/1",
      "category": "合弁設立|海外進出",
      "region": "中国",
      "importance": 2,
      "event": "台湾にTHK TAIWANを合弁設立",
      "detail": "恵祥有限公司との合弁、台湾市場開拓",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1989/5",
      "category": "海外進出",
      "region": "中国",
      "importance": 1,
      "event": "北京にCNTIC-THK SERVICE CENTERを開設",
      "detail": "中国側パートナーとの共同事業",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1989/11",
      "category": "株式上場",
      "region": "",
      "importance": 3,
      "event": "株式店頭公開",
      "detail": "",
      "significance": "公開企業化の最初の一歩",
      "source": "有価証券報告書"
    },
    {
      "date": "1991/4",
      "category": "業務提携",
      "region": "",
      "importance": 1,
      "event": "ベルデックスに資本参加",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1991/6",
      "category": "設備投資",
      "region": "",
      "importance": 2,
      "event": "山形工場を新設",
      "detail": "LMガイド・特殊軸受製造拠点",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1991/10",
      "category": "業務提携",
      "region": "その他",
      "importance": 1,
      "event": "韓国の三益工業に資本参加し技術提携",
      "detail": "現三益THK",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1992/8",
      "category": "企業買収|海外進出",
      "region": "欧州",
      "importance": 2,
      "event": "アイルランドのPGM Ballscrews（現THK Manufacturing of Ireland）を買収",
      "detail": "欧州生産拠点を獲得",
      "significance": "欧州ボールねじ生産の起点",
      "source": "有価証券報告書"
    },
    {
      "date": "1993/5",
      "category": "海外進出",
      "region": "欧州",
      "importance": 1,
      "event": "オランダにTHK Europe B.V.を設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1994/5",
      "category": "業務提携",
      "region": "",
      "importance": 1,
      "event": "東伝システム（現トークシステム）に資本参加",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1994/10",
      "category": "新規事業|研究開発",
      "region": "",
      "importance": 1,
      "event": "クロスLMガイド製造販売を開始",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1996/3",
      "category": "合弁設立|海外進出",
      "region": "中国",
      "importance": 2,
      "event": "中国・大連に大連THK瓦軸工業を合弁設立",
      "detail": "瓦房店軸承集団との合弁",
      "significance": "中国生産拠点の起点",
      "source": "有価証券報告書"
    },
    {
      "date": "1996/7",
      "category": "新規事業|研究開発",
      "region": "",
      "importance": 1,
      "event": "ボールリテーナ入りLMガイド製造販売を開始",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1997/8",
      "category": "海外進出|設備投資",
      "region": "米州",
      "importance": 3,
      "event": "米オハイオ州にTHK Manufacturing of Americaを設立",
      "detail": "北米生産拠点",
      "significance": "グローバル生産体制の本格化",
      "source": "有価証券報告書"
    },
    {
      "date": "1998/8",
      "category": "新規事業|研究開発",
      "region": "",
      "importance": 2,
      "event": "リニアモータ製造販売を開始",
      "detail": "リニアモータ事業への参入",
      "significance": "メカトロ製品群の主力化",
      "source": "有価証券報告書"
    },
    {
      "date": "2000/2",
      "category": "海外進出|設備投資",
      "region": "欧州",
      "importance": 2,
      "event": "仏エンジスハイムにTHK Manufacturing of Europeを設立",
      "detail": "欧州生産拠点",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2001/1",
      "category": "新規事業|研究開発",
      "region": "",
      "importance": 1,
      "event": "リテーナ入りローラーガイド製造販売を開始",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2001/2",
      "category": "株式上場",
      "region": "",
      "importance": 3,
      "event": "東証一部に株式を上場",
      "detail": "",
      "significance": "本格的な資本市場での地位確立",
      "source": "有価証券報告書"
    },
    {
      "date": "2002/10",
      "category": "海外進出",
      "region": "欧州",
      "importance": 1,
      "event": "仏ダーディリーにTHK Franceを設立",
      "detail": "販売子会社",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2003/8",
      "category": "海外進出",
      "region": "中国",
      "importance": 1,
      "event": "中国・上海にTHK上海国際貿易を設立",
      "detail": "中国販売拠点",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2004/3",
      "category": "海外進出|設備投資",
      "region": "中国",
      "importance": 2,
      "event": "中国・無錫にTHK無錫精密工業を設立",
      "detail": "中国第二の生産拠点",
      "significance": "中国生産能力の拡張",
      "source": "有価証券報告書"
    },
    {
      "date": "2004/11",
      "category": "企業買収",
      "region": "",
      "importance": 1,
      "event": "THKインテックスを株式交換で完全子会社化",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2005/2",
      "category": "海外進出|設備投資",
      "region": "中国",
      "importance": 1,
      "event": "中国・大連にTHK遼寧精密工業を設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2005/9",
      "category": "組織再編",
      "region": "中国",
      "importance": 2,
      "event": "中国・大連にTHK中国投資を設立",
      "detail": "中国統括会社",
      "significance": "中国事業のガバナンス強化",
      "source": "有価証券報告書"
    },
    {
      "date": "2006/12",
      "category": "海外進出",
      "region": "東南アジア",
      "importance": 1,
      "event": "シンガポールにTHK LM SYSTEMを設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2007/5",
      "category": "企業買収|新規事業",
      "region": "",
      "importance": 3,
      "event": "リズム（現THKリズム）を子会社化",
      "detail": "輸送機器事業への本格参入",
      "significance": "自動車部品事業の柱化、後のTRW事業譲受につながる起点",
      "source": "有価証券報告書"
    },
    {
      "date": "2007/7",
      "category": "海外進出|設備投資",
      "region": "東南アジア",
      "importance": 2,
      "event": "タイにTHK RHYTHM THAILANDを設立",
      "detail": "自動車部品の現地生産",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2008/9",
      "category": "海外進出|設備投資",
      "region": "東南アジア",
      "importance": 2,
      "event": "ベトナムにTHK MANUFACTURING OF VIETNAMを設立",
      "detail": "東南アジア生産拠点",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2009/7",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "ベルデックスの事業をTHKインテックスに統合",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2011/3",
      "category": "海外進出|設備投資",
      "region": "中国",
      "importance": 1,
      "event": "中国・常州にTHK常州汽車配件を設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2011/6",
      "category": "企業買収",
      "region": "東南アジア",
      "importance": 1,
      "event": "マレーシアのTHK RHYTHM MALAYSIA株式取得",
      "detail": "TRWマレーシアからの取得",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2012/2",
      "category": "海外進出|設備投資",
      "region": "米州",
      "importance": 2,
      "event": "メキシコにTHK RHYTHM MEXICANAを設立",
      "detail": "自動車部品の北米現地生産強化",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2012/3",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "ボールジョイント製造開発部門をTHKリズムに会社分割で統合",
      "detail": "",
      "significance": "輸送機器事業の集約",
      "source": "有価証券報告書"
    },
    {
      "date": "2012/11",
      "category": "海外進出",
      "region": "東南アジア",
      "importance": 2,
      "event": "インド・バンガロールにTHK Indiaを設立",
      "detail": "インド市場開拓",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2015/2",
      "category": "設備投資",
      "region": "中国",
      "importance": 1,
      "event": "大連THK互軸工業を移転・拡張",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2015/8",
      "category": "企業買収|海外進出",
      "region": "米州",
      "importance": 3,
      "event": "TRWからL&S事業を欧米で譲受",
      "detail": "米加独チェコ4拠点をTHK RHYTHM AUTOMOTIVE系で設立・買収",
      "significance": "自動車部品事業の世界規模拡大、輸送機器事業の柱化",
      "source": "有価証券報告書"
    },
    {
      "date": "2016/11",
      "category": "海外進出",
      "region": "欧州",
      "importance": 1,
      "event": "アイルランドにTHK CAPITAL等を設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2017/10",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "東京都港区にTRAホールディングスを設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2017/10",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "本社を東京都港区芝浦二丁目に移転",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/4",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "東証プライム市場へ移行",
      "detail": "市場区分見直し",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2024/5",
      "category": "企業買収",
      "region": "",
      "importance": 2,
      "event": "日本ベアリング桐生（現THK桐生）を完全子会社化",
      "detail": "直動部品事業の補完",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2025/10",
      "category": "海外進出|設備投資",
      "region": "東南アジア",
      "importance": 1,
      "event": "タイにTHK LM SYSTEM THAILANDを設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    }
  ]
}