JP3940809B2

JP3940809B2 - Clamp mechanism

Info

Publication number: JP3940809B2
Application number: JP2002217212A
Authority: JP
Inventors: 篤小檜山; 貴弘斉藤; 克有卯都木
Original assignee: Twinbird Corp
Current assignee: Twinbird Corp
Priority date: 2002-07-25
Filing date: 2002-07-25
Publication date: 2007-07-04
Anticipated expiration: 2022-07-25
Also published as: JP2004060706A

Description

【０００１】
【発明が属する技術分野】
本発明は、電気スタンドや電話台等を机の天板等に固定するためのクランプ機構に関するものである。
【０００２】
【発明が解決しようとする課題】
従来、この種のクランプ機構としては、例えば実開平６−２８９３１号公報等に記載されているものが知られている。これは、アーム式電気スタンドを机等に固定するための支持具であり、コ字状の支持体の上部に保持体を取り付け、この保持体と対向する支持体の下部に締付金具が取り付けられた螺杆を設けたものであり、螺杆を操作することで締付金具と保持体とで机の縁等を挟持してこの机の縁等に取り付けられ、更に前記保持部に対してアーム式電気スタンド等の支柱を差し込むことで、この支柱を保持するものである。そして、これらのクランプ機構は、邪魔にならないように、机天板等の後縁側に取り付けられることが多い。しかしながら、これらのクランプ機構においては、クランプ機構が邪魔にならないように机天板等の後縁側に取り付けた場合、このクランプ機構の着脱操作が面倒になってしまうという問題があった。これは、クランプ機構の着脱のために操作する螺杆が支持体の下方、即ち机天板等の下方に位置してしまうためである。
【０００３】
そして、この問題点を解決するものとして、例えば実開平１−１６６１０７号公報等に記載されているものが知られている。これは、棒状スタンド立てクランプであり、略コ字形に形成された台座の上部に、上方に締め付けツマミを設けた締め付け用凸ネジ部を回動自在に螺合させたものである。そして、机天板を前記台座の下部と締め付け用凸ネジ部の下端に設けた押し当て部とで挟み、締め付けツマミを回動させることで、前記押し当て部が下降して前記台座の下部との間で机天板を締め付け、これによって机天板にクランプが固着される。そして、前記締め付け用凸ネジ部には上方が開放した取付穴が形成されており、この取付穴に電気スタンド等の下端部を差し込んでいる。そして、このようにクランプを構成することで、締め付けツマミが机天板の上方に位置することになり、クランプの着脱操作が行いやすいという利点がある。
【０００４】
これらのクランプ機構においては、その構造上、締付用凸ネジ部と台座上部の螺合部分が机天板よりも高い位置になってしまう。これは、クランプをあらゆる厚さの机天板に取り付けることができるようにするためであり、例えば厚い机天板に取り付けられるように余裕をもった寸法の台座が用いられている場合、薄い机天板に取り付けたときに螺合部分が机天板の上面よりもかなり高い位置になってしまう。しかしながら、このように螺合部分が高い位置になってしまう場合、クランプに取り付けられた電気スタンド等が揺れた時にクランプに対して大きな力が加わってしまうという問題があった。これは、揺れが機器に加わった場合、螺合部分が低い場合に比べて螺合部分が高い場合の方が、締め付け凸ネジ部の押し当て部から螺合部分までの長さが長いため、締め付け凸ネジ部が揺れやすいためである。また、電気スタンド等を取付穴に取り付けた状態でクランプの着脱操作を行うことができないという欠点があった。更に、上記クランプ機構においては、電気スタンド等の下端部を取付穴に差し込むことで、電気スタンド等をクランプに取り付けているため、電気スタンド等がぐらつきやすいという問題もあった。
【０００５】
本発明は以上の問題点を解決し、クランプに対して過大な力が加わらず、机天板等に対して着脱しやすく、安定して固定することができるクランプ機構を提供することを目的とする。
【０００６】
【課題を解決するための手段】
本発明の請求項１記載のクランプ機構は、雄ネジ部（２０）及びこの雄ネジ部（２０）の上部を覆う短円筒状の第一カバー体（２１）が形成された軸柱（２）と、この軸柱（２）の下方に固定された下挟持体（３２）と、前記軸柱（２）に沿って上下方向に移動可能な上挟持体（２６）と、前記雄ネジ部（２０）と螺合する雌ネジ部（２２）を有し上部に前記第一カバー体（２１）の外面を覆うことができる環状の凹部（２４）が形成されると共に前記上挟持体（２６）と当接してこの上挟持体（２６）を下挟持体（３２）側に移動させる締付体（２３）よりなり、前記締付体（２３）及び上挟持体（２６）が最下位にあっても、前記第一カバー体（２１）の下端が前記締付体（２３）の凹部（２４）から外れないように、前記凹部（２４）の深さ（Ｙ）が前記上挟持体（２６）の可動距離（Ｘ）よりも大きく形成されていると共に、前記軸柱（２）に対して機器（１４）が直接取り付けられているものである。
【０００７】
本発明は以上のように構成することにより、前記軸柱（２）に沿って上下方向に移動可能な前記上挟持体（２６）と前記軸柱（２）の下方に固定された前記下挟持体（３２）との間に机天板等が挟まれるようにし、前記締付体（２３）を締め付けることで、これらの上挟持体（２６）と下挟持体（３２）とで机天板等を締め付け、これによって前記クランプ機構が机天板等に固定される。また、前記締付体（２３）及び上挟持体（２６）が最下位にある状態であっても、前記第一カバー体（２１）の下端が前記締付体（２３）の凹部（２４）から外れないので、前記雄ネジ部（２０）が前記第一カバー体（２１）と締付体（２３）の間から露出しない。更に、前記機器（１４）が直接取り付けられた前記軸柱（２）に取り付けられた前記締付体（２３）を操作することで、前記軸柱（２）に固定された前記下挟持体（３２）と前記軸柱（２）に沿って上下に可動な前記上挟持体（２６）の間で机天板等が挟まれ、締め付けられる。
【０００８】
また、本発明の請求項２に記載のクランプ機構は、請求項１において、前記上挟持体（２６）の下部に、前記雄ネジ部（２０）を覆う第二カバー体（３１）が一体に形成され、前記下挟持体（３２）の上部に、前記雄ネジ部（２０）を覆い且つ前記第二カバー体（３１）によって覆われる第三カバー体（３６）が一体に形成されていると共に、前記締付体（２３）及び上挟持体（２６）が最上位にあっても、前記第二カバー体（３１）の下部と前記第三カバー体（３６）の上部が重なるように、前記第三カバー体（３６）の長さ（Ｚ）が、前記締付体（２３）及び上挟持体（２６）の可動距離（Ｘ）よりも長く形成されているものである。
【０００９】
本発明は以上のように構成することにより、前記締付体（２３）及び上挟持体（２６）が最上位にある状態であっても、前記第二カバー体（３１）の下部と前記第三カバー体（３６）の上部が重なるので、前記雄ネジ部（２０）が前記第二カバー体（３１）と第三カバー体（３６）との間から露出しない。
【００１０】
【発明の実施形態】
以下、本発明の実施形態について、図１乃至図４に基づいて説明する。なお、図１は右側面図であり、この図において左が前方、右が後方となる。１は照明装置である。この照明装置１は、軸柱２と、この軸柱２の下方に設けられたクランプ機構３と、前記上端に設けられた第一関節部４と、この第一関節部４を介して前記軸柱２の上方に取り付けられた腕部５と、この腕部５の上端に取り付けられた第二関節部６と、この第二関節部６を介して前記腕部５の上方に取り付けられた灯具７とで構成されている。前記第一関節部４は、左右方向に軸が形成されており、締付ネジ８を緩めることで前記腕部５が前記軸柱２に対して揺動可能となると共に、前記締付ネジ８を締めることで前記腕部５が固定される。また、前記腕部５は、その中間部に図示しないフレキシブルシャフトを有しており、このフレキシブルシャフトの外部を覆うように蛇腹部９が設けられている。また、前記第二関節部６は、その軸が前記第一関節部４と平行となるように形成されており、締付ネジ１０を緩めることで前記灯具７が前記腕部５に対して揺動可能となると共に、前記締付ネジ１０を締めることで前記灯具７が固定される。更に、前記灯具７は、前記第二関節部６に接続された第一支持部１１と、この第一支持部１１の前方に接続された第二支持部１２と、この第二支持部１２の上方に接続された灯具本体１３とで構成されている。そして、前記第一支持部１１に対して、前記第二支持部１２は、前記第二関節部６の軸方向と直交し且つ図１の状態において前後方向に形成された軸回りに回動自在となるように接続されている。更に、前記第二支持部１２に対して、前記灯具本体１３は、前記第二関節部６の軸方向及び前記第一支持部１１の軸方向と直交し且つ図１の状態において上下方向に形成された軸回りに回動自在となるように接続されている。従って、３つのそれぞれ直交する軸によって、前記灯具本体１３はあらゆる方向に向けられることになる。そして、前記第一関節部４、腕部５、第二関節部６及び灯具７によって、前記照明装置１における機器たる照明装置本体１４が構成される。
【００１１】
前記軸柱２及びクランプ機構３について詳述する。前記軸柱２は、雄ネジ部２０と、この雄ネジ部２０の上部を覆う短円筒状の第一カバー体２１とで構成されている。そして、前記雄ネジ部２０と螺合する雌ネジ部２２を有する締付体２３が、前記雄ネジ部２０に対して上下に昇降自在に取り付けられている。前記締付体２３は、その上部に前記第一カバー体２１の外面を覆うことができる環状の凹部２４が形成されていると共に、その下部に下方に突出した環状の凸部２５が形成されている。そして、前記締付体２３の下部に当接して、上挟持体２６が設けられている。この上挟持体２６は、前記軸柱２に沿って上下に移動可能であると共に、その前方に机の天板Ａ等を挟持する挟持部２７が一体に形成されている。また、この挟持部２７の下面には、棒状のものを挟持するための挟持凹部２８が形成されたゴム製の滑り止め２９が取り付けられている。また、前記上挟持体２６の上部には、前記締付体２３の凸部２５を受ける環状の凹部３０が形成されている。なお、この凹部３０の深さＶは前記凸部２５の高さＷよりもやや浅く形成されている。更に、前記上挟持体２６の下部には、前記雄ネジ部２０及び後述する第三カバー体３６を覆う第二カバー体３１が一体に形成されている。なお、この第二カバー体３１は、前側が平面状の、断面Ｄ字型の筒状に形成されている。更に、前記軸柱２の雄ネジ部２０の下端には、前記上挟持体２６に対向して下挟持体３２が設けられている。この下挟持体３２は、ナット等によって固定されていると共に、その前方に机の天板Ａ等を挟持する挟持部３３が一体に形成されている。また、この挟持部３３の上面には、棒状のものを挟持するための挟持凹部３４が形成されたゴム製の滑り止め３５が取り付けられている。更に、前記下挟持体３２の上部には、前記雄ネジ部２０を覆う第三カバー体３６が一体に形成されている。なお、この第三カバー体３６は、前記第二カバー体３１と同様に、前側が平面状の、断面Ｄ字型の筒状に形成されている。そして、前記締付体２３及び上挟持体２６が最上位にある状態、即ち前記締付体２３の凹部２４の底に前記第一カバー体２１の下端が当接し、この状態の締付体２３に上挟持体２６が当接した状態において、前記上挟持体２６の第二カバー体３１の下端から前記下挟持体３２の上面までの距離Ｘが前記上挟持体２６の可動範囲となる。また、前記締付体２３の凹部２４の深さＹは、前記上挟持体２６の可動距離Ｘよりも大きく形成されている。従って、前記締付体２３及び上挟持体２６が最下位にある状態であっても、前記第一カバー体２１の下端は前記締付体２３の凹部２４から外れることがなく、従って前記雄ネジ部２０が前記第一カバー体２１と締付体２３との間から露出するということがない。更に、前記下挟持体３２の第三カバー体３６の長さＺは、前記締付体２３及び上挟持体２６の可動距離Ｘよりも長く形成されている。従って、前記締付体２３及び上挟持体２６が最上位にある状態であっても、前記第二カバー体３１の下部と前記第三カバー体３６の上部が重なるため、前記雄ネジ部２０が前記第二カバー体３１と第三カバー体３６との間から露出するということがない。このように、前記クランプ機構３は、前記雄ネジ部２０、締付体２３、上挟持体２６、下挟持体３２から構成されている。
【００１２】
次に、本実施形態の作用について説明する。まず、前記クランプ機構３を机の天板Ａに取り付ける場合について説明する。使用者は、まず前記照明装置１の下部に設けられた前記クランプ機構３の締付体２３を前記雄ネジ部２０に対して緩めることで、前記締付体２３を前記軸柱２に沿って上昇させると共に、前記上挟持体２６を前記軸柱２に沿って上昇させることで、前記上挟持体２６と下挟持体３２との間隔を拡げる。そして、前記照明装置本体１４ごと前記照明装置１を把持し、前記上挟持体２６と下挟持体３２の挟持部２７，３３で机の天板Ａを挟むと共に、前記締付体２３を前記雄ネジ部２０に対して締め付けることで、前記締付体２３を前記軸柱２に沿って下降させる。これによって、前記上挟持体２６は前記締付体２３によって押され、前記軸柱２に沿って下降する。このとき、前記締付体２３が前記上挟持体２６に当接した状態において、前記雄ネジ部２０と雌ネジ部２２の螺合部分は、前記上挟持体２６と略同じ高さに位置することになる。そして、このまま前記締付体２３を締め付けることで、前記上挟持体２６と下挟持体３２の挟持部２７，３３によって、机の天板Ａが挟持されることになり、これによって机の天板Ａに前記クランプ機構３が固定されることになる。そして、前述したとおり、前記雄ネジ部２０と雌ネジ部２２の螺合部分が前記上挟持体２６と略同じ高さであるので、前記クランプ機構３は机の天板Ａを強固に挟持することになり、前記照明装置１が揺れたとしても、前記クランプ機構３に過大な力が加わらない。また、前記照明装置本体１４が前記第一関節部４によって前記軸柱２に直接取り付けられているので、この軸柱２より上の前記照明装置本体１４をぐらつきにくくすることができるばかりでなく、この照明装置本体１４ごと机の天板Ａに取り付けることで、取付操作を容易にできる。また、前述したとおり、前記締付体２３を締め付けて前記上挟持体２６を最下位まで下降させたとしても、前記第一カバー体２１と締付体２３の間に隙間が空かず、従って前記雄ネジ部２０が露出してしまうことがない。更に、前記第二及び第三カバー体３１，３６は、共に正面側が平面の断面Ｄ字型の筒状に形成されているため、前記上挟持体２６が下降する際に回り止めされることになる。
【００１３】
次に、前記クランプ機構３を机の天板Ａから取り外す場合について説明する。使用者は、前記締付体２３を前記雄ネジ部２０に対して緩めることで、前記締付体２３を前記軸柱２に沿って上昇させると共に、前記上挟持体２６を前記軸柱２に沿って上昇させることで、前記上挟持体２６と下挟持体３２との間隔を拡げる。そして、この拡がった上挟持体２６と下挟持体３２の挟持部２７，３３の間から、机の天板Ａを外す。このとき、前述したとおり、前記照明装置本体１４が前記第一関節部４によって前記軸柱２に直接取り付けられているので、前記照明装置本体１４ごと机の天板Ａから取り外すことで、取り外し操作を容易にできる。また、前記第二及び第三カバー体３１，３６によって前記雄ネジ部２０が覆われており、前記上挟持体２６が最上位にあっても前記第二及び第三カバー体３１，３６が重なっているため、これらの第二及び第三カバー体３１，３６の間において前記雄ネジ部２０が露出することがない。即ち、前記第二カバー体３１は、前記上挟持体２６の可動範囲を制限する作用を有するばかりでなく、前記第二及び第三カバー体３１，３６によって前記雄ネジ部２０を隠して外観をすっきりと見せる作用も有している。なお、前記照明装置本体１４については、それらの作用の説明を省略する。
【００１４】
以上のように本発明は、雄ネジ部２０が形成された軸柱２の下端部に下挟持体３２を固定し、この下挟持体３２に対向して上挟持体２６を前記軸柱２に沿って上下に移動可能とし、更に前記軸柱２の雄ネジ部２０と螺合する雌ネジ部２２を有する締付体２３を前記軸柱２に対して上下に昇降自在に取り付けたことで、前記締付体２３を締め付けることで前記上挟持体２６を前記下挟持体３２側に押し付け、これら上挟持体２６と下挟持体３２とで机の天板Ａ等を挟持するものであり、この際、前記締付体２３の雌ネジ部２２と雄ネジ部２０の螺合部分が前記上挟持体２６に対して比較的近くできることで、机の天板Ａ等は強固に挟持されることになり、また、機器たる照明装置本体１４を含む照明装置１が揺れたとしてもクランプ機構３に過大な力が加わらないようにできる。また、前記締付体２３の凹部２４の深さＹが前記上挟持体２６の可動距離Ｘよりも大きく形成されていることで、前記締付体２３及び上挟持体２６が最下位にあっても、前記軸柱２の第一カバー体２１の下端が前記凹部２４から外れず、これによって、前記雄ネジ部２０が前記第一カバー体２１と締付体２３の間から露出しないようにできる。
【００１５】
また、本発明は、機器たる前記照明装置本体１４が第一関節部４によって前記軸柱２に対して直接取り付けられているので、前記クランプ機構３を操作することで、前記照明装置本体１４ごと前記照明装置１を机の天板Ａに対して着脱することができる。
【００１６】
なお、本発明は以上の実施形態に限定されるものではなく、発明の要旨の範囲内で種々の変形が可能である。例えば、本実施形態では、機器として照明装置を用いて説明したが、これ以外の機器、例えば電話台や原稿台等に用いても良い。
【００１７】
【発明の効果】
本発明の請求項１記載のクランプ機構は、雄ネジ部（２０）及びこの雄ネジ部（２０）の上部を覆う短円筒状の第一カバー体（２１）が形成された軸柱（２）と、この軸柱（２）の下方に固定された下挟持体（３２）と、前記軸柱（２）に沿って上下方向に移動可能な上挟持体（２６）と、前記雄ネジ部（２０）と螺合する雌ネジ部（２２）を有し上部に前記第一カバー体（２１）の外面を覆うことができる環状の凹部（２４）が形成されると共に前記上挟持体（２６）と当接してこの上挟持体（２６）を下挟持体（３２）側に移動させる締付体（２３）よりなり、前記締付体（２３）及び上挟持体（２６）が最下位にあっても、前記第一カバー体（２１）の下端が前記締付体（２３）の凹部（２４）から外れないように、前記凹部（２４）の深さ（Ｙ）が前記上挟持体（２６）の可動距離（Ｘ）よりも大きく形成されていると共に、前記軸柱（２）に対して機器（１４）が直接取り付けられているものであり、前記軸柱（２）に沿って上下方向に移動可能な前記上挟持体（２６）と前記軸柱（２）の下方に固定された前記下挟持体（３２）との間に机天板等が挟まれるようにし、前記締付体（２３）を締め付けることで、これらの上挟持体（２６）と下挟持体（３２）とで机天板等を締め付け、これによって前記クランプ機構が机天板等に固定されるので、螺合部分が机天板等に対して比較的低い位置となり、クランプに取り付けられた機器（１４）が揺れた時に前記クランプに対して加わる力を比較的小さくすることができる。また、前記締付体（２３）及び上挟持体（２６）が最下位にある状態であっても、前記第一カバー体（２１）の下端が前記締付体（２３）の凹部（２４）から外れないので、前記雄ネジ部（２０）を前記第一カバー体（２１）と締付体（２３）の間から露出させないようにすることができる。更に、前記機器（１４）が直接取り付けられた前記軸柱（２）に取り付けられた前記締付体（２３）を操作することで、前記軸柱（２）に固定された前記下挟持体（３２）と前記軸柱（２）に沿って上下に可動な前記上挟持体（２６）の間で机天板等が挟まれ、締め付けられるので、前記クランプ機構に対して前記機器（１４）をぐらつきにくくすることができる。
【００１８】
また、本発明の請求項２に記載のクランプ機構は、請求項１において、前記上挟持体（２６）の下部に、前記雄ネジ部（２０）を覆う第二カバー体（３１）が一体に形成され、前記下挟持体（３２）の上部に、前記雄ネジ部（２０）を覆い且つ前記第二カバー体（３１）によって覆われる第三カバー体（３６）が一体に形成されていると共に、前記締付体（２３）及び上挟持体（２６）が最上位にあっても、前記第二カバー体（３１）の下部と前記第三カバー体（３６）の上部が重なるように、前記第三カバー体（３６）の長さ（Ｚ）が、前記締付体（２３）及び上挟持体（２６）の可動距離（Ｘ）よりも長く形成されているものであり、前記締付体（２３）及び上挟持体（２６）が最上位にある状態であっても、前記第二カバー体（３１）の下部と前記第三カバー体（３６）の上部が重なるので、前記雄ネジ部（２０）を前記第二カバー体（３１）と第三カバー体（３６）との間から露出させず、外観をすっきりと見せることができる。
【図面の簡単な説明】
【図１】本発明の一実施形態を示すクランプ機構の右側面図である。
【図２】同上、使用状態を示す側面図である。
【図３】同上、上挟持体を最上位まで上昇させた状態における要部の断面図である。
【図４】同上、上挟持体を最下位まで下降させた状態における要部の断面図である。
【符号の説明】
２軸柱
３クランプ機構
１４照明装置本体（機器）
２０雄ネジ部
２１第一カバー体
２２雌ネジ部
２３締付体
２４凹部
２６上挟持体
３１第二カバー体
３２下挟持体
３６第三カバー体
Ａ机の天板
Ｘ上挟持体の可動距離
Ｙ凹部の深さ
Ｚ第三カバー体の長さ [0001]
[Technical field to which the invention belongs]
The present invention relates to a clamp mechanism for fixing a desk lamp, a telephone stand or the like to a table top or the like.
[0002]
[Problems to be solved by the invention]
Conventionally, as this type of clamping mechanism, for example, one described in Japanese Utility Model Laid-Open No. 6-28931 is known. This is a support for fixing the arm-type desk lamp to a desk or the like. A holding body is attached to the upper part of the U-shaped support body, and a fastening bracket is attached to the lower part of the support body facing this holding body. And is attached to the edge of the desk by holding the edge of the desk between the fastening bracket and the holding body by operating the screw, and is further arm-type with respect to the holding portion. The column is held by inserting a column such as a desk lamp. These clamping mechanisms are often attached to the rear edge side of a tabletop so as not to get in the way. However, in these clamp mechanisms, there is a problem that the attaching / detaching operation of the clamp mechanism becomes troublesome when it is attached to the rear edge side of the table top plate or the like so as not to obstruct the clamp mechanism. This is because the screw that is operated for attaching and detaching the clamp mechanism is positioned below the support, that is, below the tabletop or the like.
[0003]
In order to solve this problem, for example, what is described in Japanese Utility Model Laid-Open No. 1-166107 is known. This is a bar-shaped stand stand clamp, in which a tightening convex screw portion provided with a tightening knob on the upper side is rotatably screwed onto an upper portion of a pedestal formed in a substantially U shape. Then, the tabletop is sandwiched between the lower part of the pedestal and the pressing part provided at the lower end of the convex screw part for tightening, and by rotating the tightening knob, the pressing part is lowered and the lower part of the pedestal is The desk top plate is tightened between the two, thereby fixing the clamp to the table top plate. A mounting hole having an open top is formed in the tightening convex screw portion, and a lower end portion of a table lamp or the like is inserted into the mounting hole. And by comprising a clamp in this way, a fastening knob will be located above a table top board, and there exists an advantage that the attachment or detachment operation of a clamp is easy to perform.
[0004]
In these clamp mechanisms, due to the structure, the screwing portion between the tightening convex screw portion and the upper portion of the base is positioned higher than the table top plate. This is so that the clamp can be attached to a desk top plate of any thickness. For example, when a pedestal with a margin is used so that it can be attached to a thick desk top plate, a thin desk is used. When attached to the top plate, the screwed portion will be at a position considerably higher than the top surface of the table top plate. However, when the screwed portion is at a high position as described above, there is a problem that a large force is applied to the clamp when the desk lamp or the like attached to the clamp is shaken. This is because when the vibration is applied to the device, the length from the pressing part of the tightening convex thread part to the threaded part is longer when the threaded part is higher than when the threaded part is low, This is because the tightening convex thread portion is easily shaken. In addition, there is a disadvantage that the clamp cannot be attached / detached with the desk lamp or the like attached to the attachment hole. Furthermore, in the above-mentioned clamp mechanism, since the desk lamp or the like is attached to the clamp by inserting the lower end portion of the desk lamp or the like into the mounting hole, there is also a problem that the desk lamp or the like is easily wobbled.
[0005]
An object of the present invention is to solve the above-described problems, and to provide a clamp mechanism that is easy to attach and detach to and from a tabletop plate and that can be stably fixed without applying excessive force to the clamp. To do.
[0006]
[Means for Solving the Problems]
The clamp mechanism according to claim 1 of the present invention is a shaft column (2) in which a male screw part (20) and a short cylindrical first cover body (21) covering the upper part of the male screw part (20) are formed. A lower holding body (32) fixed below the shaft column (2) , an upper holding body (26) movable in the vertical direction along the shaft column (2) , and the male screw portion ( 20) and screwed to the female screw portion (the chromatic and the top 22) the first cover member (annular recess can cover the outer surface of 21) (24) is formed Rutotomoni the upper holding member (26) and abuts the Uekyo bearing member (26) Shitakyo bearing member (32) side Ri name from the clamping member for moving (23), the body said clamping (23) and Uekyo bearing member (26) is the lowest Even if it exists, said recessed part (24) so that the lower end of said 1st cover body (21) may not remove | deviate from the recessed part (24) of said clamping body (23). Depth (Y) together with is formed larger than the movable distance (X) of the upper holding member (26), the device (14) is one that is directly attached to the shaft pillar (2) .
[0007]
By the present invention the configuration described above, the lower holding fixed below the shaft column (2) movable vertically along a said Uekyo bearing member (26) and said shaft pillar (2) as Tsukueten plate or the like is interposed between the body (32), by tightening body said clamping (23), de holding member on of these (26) Shitakyo bearing member (32) tighten the desk top plate or the like, whereby the clamping mechanism is fixed to a desk top plate. Even if the tightening body (23) and the upper clamping body (26) are in the lowest position, the lower end of the first cover body (21) is the recess (24) of the tightening body (23). Therefore, the male screw part (20) is not exposed from between the first cover body (21) and the tightening body (23). Further, by operating the fastening body (23) attached to the shaft column (2) to which the device (14) is directly attached, the lower clamping body (fixed to the shaft column (2) ( 32) and the upper clamp body (26) movable up and down along the shaft column (2), a table top plate or the like is sandwiched and tightened.
[0008]
According to a second aspect of the present invention, there is provided the clamping mechanism according to the first aspect, wherein the second cover body (31) covering the male screw portion (20) is integrally formed with the lower portion of the upper holding body (26). A third cover body (36) is formed integrally with the lower clamping body (32) so as to cover the male screw portion (20) and to be covered by the second cover body (31). The lower part of the second cover body (31) and the upper part of the third cover body (36) are overlapped even when the fastening body (23) and the upper clamping body (26) are at the uppermost position. The length (Z 1 ) of the third cover body (36) is longer than the movable distance (X) of the tightening body (23) and the upper clamping body (26) .
[0009]
By configuring the present invention as described above, even if the tightening body (23) and the upper clamping body (26) are in the uppermost position, the lower portion of the second cover body (31) and the first Since the upper parts of the three cover bodies (36) overlap, the male screw part (20) is not exposed from between the second cover body (31) and the third cover body (36).
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 4. FIG. 1 is a right side view, in which the left is the front and the right is the rear. Reference numeral 1 denotes a lighting device. The lighting device 1 includes a shaft column 2, a clamp mechanism 3 provided below the shaft column 2, a first joint portion 4 provided at the upper end, and the shaft via the first joint portion 4. An arm part 5 attached above the column 2, a second joint part 6 attached to the upper end of the arm part 5, and a lamp attached above the arm part 5 via the second joint part 6 7. The first joint portion 4 has the axis is formed in the lateral direction, with the arms 5 by loosening the tightening screw 8 is swingable with respect to the shaft column 2, screw the tightening 8 The arm 5 is fixed by tightening. Moreover, the said arm part 5 has the flexible shaft which is not illustrated in the intermediate part, and the bellows part 9 is provided so that the exterior of this flexible shaft may be covered. Further, the second joint portion 6, the shaft is formed so as to be parallel with the first joint portion 4, the lamp 7 by loosening the tightening screw 10 is oscillating with respect to the arms 5 with a rotatably, the lamp 7 is fixed by tightening the tightening screw 10. Further, the lamp 7 includes a first support portion 11 connected to the second joint portion 6, a second support portion 12 connected in front of the first support portion 11, and the second support portion 12. It is comprised with the lamp main body 13 connected upwards. And with respect to said 1st support part 11, said 2nd support part 12 is free to rotate around the axis | shaft orthogonal to the axial direction of said 2nd joint part 6, and formed in the front-back direction in the state of FIG. It is connected to become. Furthermore, with respect to the second support portion 12, the lamp body 13, formed in the vertical direction axially perpendicular to and in the state of FIG. 1 in the axial direction and the first support portion 11 of the second joint portion 6 It is connected so as to be rotatable around the axis. Accordingly, the lamp body 13 is directed in all directions by three orthogonal axes. Then, the first joint portion 4, the arms 5, by a second joint 6 and the lamp 7, the lighting device equipment serving the lighting apparatus main body 14 in 1 is constructed.
[0011]
The shaft column 2 and the clamp mechanism 3 will be described in detail. The shaft column 2 includes a male screw part 20 and a short cylindrical first cover body 21 covering the upper part of the male screw part 20. A fastening body 23 having a female screw portion 22 screwed with the male screw portion 20 is attached to the male screw portion 20 so as to be movable up and down. The tightening body 23 is formed with an annular recess 24 capable of covering the outer surface of the first cover body 21 at an upper portion thereof, and an annular projection 25 protruding downward at a lower portion thereof. Yes. An upper clamping body 26 is provided in contact with the lower portion of the fastening body 23. The upper sandwiching body 26 can move up and down along the shaft column 2, and a sandwiching portion 27 that sandwiches the table top A of the desk is integrally formed in front of the upper sandwiching body 26. Further, on the lower surface of the sandwiching portion 27, a rubber non-slip 29 having a sandwiching recess 28 for sandwiching a rod-like member is attached. Further, an annular recess 30 for receiving the projection 25 of the tightening body 23 is formed on the upper clamping body 26. The depth V of the concave portion 30 is slightly shallower than the height W of the convex portion 25. Further, a second cover body 31 that covers the male screw portion 20 and a third cover body 36 to be described later is formed integrally with the lower portion of the upper holding body 26. In addition, this 2nd cover body 31 is formed in the cylinder shape of a D-shaped cross section with the front side planar. Further, a lower clamping body 32 is provided at the lower end of the male screw portion 20 of the shaft column 2 so as to face the upper clamping body 26. The lower clamping body 32 is fixed by a nut or the like, and a clamping portion 33 for clamping the table top A or the like is integrally formed in front of the lower clamping body 32. Further, a rubber anti-slip 35 having a holding recess 34 for holding a rod-shaped object is attached to the upper surface of the holding portion 33. Further, a third cover body 36 that covers the male screw portion 20 is integrally formed on the upper portion of the lower clamping body 32. As with the second cover body 31, the third cover body 36 is formed in a cylindrical shape having a D-shaped cross section with a flat front side. The lower end of the first cover body 21 is in contact with the bottom of the recess 24 of the tightening body 23, that is, the tightening body 23 and the upper clamping body 26 are in the uppermost position. When the upper holding body 26 is in contact with the upper holding body 26, the distance X from the lower end of the second cover body 31 of the upper holding body 26 to the upper surface of the lower holding body 32 becomes the movable range of the upper holding body 26. Further, the depth Y of the recess 24 of the tightening body 23 is formed larger than the movable distance X of the upper holding body 26. Therefore, even the fastening member 23 and Uekyo bearing member 26 is a state in which the lowest, a lower end of the first cover member 21 without departing from the recess 24 of the fastening member 23, thus the male screw part 20 is never that is exposed from between the first cover member 21 and the clamping member 23. Further, the length Z of the third cover body 36 of the lower holding body 32 is formed longer than the movable distance X of the tightening body 23 and the upper holding body 26. Therefore, the fastening member 23 and Uekyo bearing member 26 even in a state at the top, since the upper portion of the lower and the third cover member 36 of the second cover member 31 are overlapped, the male screw portion 20 is It is not that is exposed from between the second cover member 31 and the third cover member 36. Thus, the clamp mechanism 3, the male threaded portion 20, fastening body 23, Uekyo bearing member 26, and a lower holding member 32.
[0012]
Next, the operation of this embodiment will be described. First, the case where the said clamp mechanism 3 is attached to the top plate A of a desk is demonstrated. The user, by first loosening the fastening member 23 of the clamping mechanism 3 provided in the lower part of the lighting device 1 relative to the male threaded portion 20, along the fastening member 23 to the shaft column 2 While raising, the said upper clamping body 26 is raised along the said axial pillar 2, and the space | interval of the said upper clamping body 26 and the lower clamping body 32 is expanded. Then, gripping the illumination device main body 14 each of the lighting device 1, the sandwich top plate A desk in a sandwich portion 27, 33 of the upper holding member 26 and Shitakyo bearing member 32, the male and the fastening member 23 by tightening the screw portion 20 is lowered along the fastening member 23 to the shaft column 2. Thereby, the upper holding member 26 is pushed by the fastening member 23 descends along the shaft column 2. At this time, in a state where the tightening body 23 is in contact with the upper holding body 26, the threaded portion of the male screw portion 20 and the female screw portion 22 is positioned at substantially the same height as the upper holding body 26. It will be. Then, by tightening the clamping body 23 as it is, the table top A is clamped by the clamping portions 27 and 33 of the upper clamping body 26 and the lower clamping body 32, and thereby the table top plate is clamped. the clamping mechanism 3 is to be fixed to the a. As described above, since the screwed portion of the male screw portion 20 and the female screw portion 22 is substantially the same height as the upper holding body 26, the clamp mechanism 3 firmly holds the top plate A of the desk. will be the even illumination device 1 shook, excessive force is not applied to the clamping mechanism 3. Further, since the lighting device main body 14 is attached directly to the shaft column 2 by the first joint portion 4, not only it can be made less wobble of the lighting device main body 14 above the shaft column 2, By attaching the illuminating device main body 14 together to the top plate A of the desk, the mounting operation can be facilitated. Further, as described above, even the Uekyo bearing member 26 by tightening the clamping member 23 is lowered to the lowest, no empty gap between the first cover member 21 and the clamping member 23, thus the The male screw portion 20 is not exposed. Furthermore, since both the second and third cover bodies 31 and 36 are formed in a cylindrical shape having a D-shaped cross section with a flat front side, they are prevented from rotating when the upper holding body 26 is lowered. Become.
[0013]
Next, the case where the said clamp mechanism 3 is removed from the top plate A of a desk is demonstrated. The user, by loosening the fastening member 23 to the male screw portion 20, the clamping member 23 together with the raising along the shaft pillar 2, the Uekyo bearing member 26 to the shaft column 2 By raising along, the space | interval of the said upper clamping body 26 and the lower clamping body 32 is expanded. Then, the table top A of the desk is removed from between the sandwiched portions 27 and 33 of the expanded upper sandwiching body 26 and the lower sandwiching body 32. At this time, as described above, since the lighting device main body 14 is attached directly to the shaft column 2 by the first joint portion 4, by removing from the top plate A desk each of the lighting apparatus main body 14, removal operation Can be easily done. Further, the male screw portion 20 is covered, the upper holding member 26 is the even the uppermost second and third cover members 31 and 36 overlapped by said second and third cover members 31 and 36 and for that, the male screw portion 20 between the of these second and third cover members 31 and 36 is not exposed. That is, the second cover member 31, the Uekyo bearing member not only has the effect of limiting the movable range of the 26 appearance hides the male screw portion 20 by the second and third cover members 31 and 36 It also has a clear effect. In addition, about the said illuminating device main body 14, description of those effect | actions is abbreviate | omitted.
[0014]
The present invention as described above, the Shitakyo bearing member 32 is fixed to the lower end of the shaft column 2 male thread portion 20 is formed, the upper holding member 26 to the shaft column 2 to face the lower holding member 32 A fastening body 23 that is movable up and down along the shaft column 2 and has a female screw portion 22 that is screwed with the male screw portion 20 of the shaft column 2 is attached to the shaft column 2 so as to be movable up and down. wherein said Uekyo bearing member 26 by tightening the clamping member 23 pressed against the lower holding member 32 side, which sandwich the top plate a and the like of the desk these on the holding member 26 and Shitakyo bearing member 32, the time, by a female screw portion 22 of the fastening member 23 is screwed portion of the externally threaded portion 20 can be relatively close to the Uekyo bearing member 26, the top plate a and the like of the desk to be firmly clamped In addition, even if the lighting device 1 including the lighting device main body 14 as a device is shaken, the clamp mechanism 3 is excessively moved. It can be as a force is not applied. Further, since the depth Y of the recess 24 of the tightening body 23 is formed to be larger than the movable distance X of the upper holding body 26, the tightening body 23 and the upper holding body 26 are at the lowest position. However, the lower end of the first cover body 21 of the shaft column 2 does not come off from the concave portion 24, thereby preventing the male screw portion 20 from being exposed from between the first cover body 21 and the tightening body 23. .
[0015]
Moreover, since the said illuminating device main body 14 which is an apparatus is directly attached with respect to the said axial column 2 by the 1st joint part 4, the said lighting device main body 14 is operated by operating the said clamp mechanism 3. The said illuminating device 1 can be attached or detached with respect to the top plate A of a desk.
[0016]
In addition, this invention is not limited to the above embodiment, A various deformation | transformation is possible within the range of the summary of invention. For example, in the present embodiment, the lighting device is used as the device. However, other devices such as a telephone stand and a document table may be used.
[0017]
【The invention's effect】
The clamp mechanism according to claim 1 of the present invention is a shaft column (2) in which a male screw part (20) and a short cylindrical first cover body (21) covering the upper part of the male screw part (20) are formed. A lower holding body (32) fixed below the shaft column (2) , an upper holding body (26) movable in the vertical direction along the shaft column (2) , and the male screw portion ( 20) and screwed to the female screw portion (the chromatic and the top 22) the first cover member (annular recess can cover the outer surface of 21) (24) is formed Rutotomoni the upper holding member (26) and abuts the Uekyo bearing member (26) Shitakyo bearing member (32) side Ri name from the clamping member for moving (23), the body said clamping (23) and Uekyo bearing member (26) is the lowest Even if it exists, said recessed part (24) so that the lower end of said 1st cover body (21) may not remove | deviate from the recessed part (24) of said clamping body (23). Depth (Y) together with is formed larger than the movable distance (X) of the upper holding member (26), said shaft pillar (2) to the device (14) are those that are attached directly , Tsukuetenban between the shaft pillar the lower holding member which is fixed below the shaft pillars and movable vertically along the (2) the Uekyo bearing member (26) (2) (32) so like is sandwiched, wherein by tightening clamping body (23), on of these holding member (26) and tighten the desk top plate or the like out with Shitakyo bearing member (32), whereby said clamp since mechanism is fixed to a desk top plate or the like, it is a relatively low position engaged portion relative to the desk top plate or the like, the force applied to the clamp when the device attached to the clamp (14) shook It can be made relatively small. Even if the tightening body (23) and the upper clamping body (26) are in the lowest position, the lower end of the first cover body (21) is the recess (24) of the tightening body (23). because without departing from the can so as not to expose from between the male threaded portion and the (20) the first cover member (21) and the clamping member (23). Further, by operating the fastening body (23) attached to the shaft column (2) to which the device (14) is directly attached, the lower clamping body (fixed to the shaft column (2) ( 32) and the upper clamp body (26) movable up and down along the shaft column (2), and a table top plate is sandwiched and tightened, so that the device (14) is attached to the clamp mechanism. It can be made difficult to wobble.
[0018]
According to a second aspect of the present invention, there is provided the clamping mechanism according to the first aspect, wherein the second cover body (31) covering the male screw portion (20) is integrally formed with the lower portion of the upper holding body (26). A third cover body (36) is formed integrally on the lower clamping body (32) and covers the male screw portion (20) and is covered by the second cover body (31). The lower part of the second cover body (31) and the upper part of the third cover body (36) are overlapped even when the fastening body (23) and the upper clamping body (26) are at the uppermost position. The length (Z) of the third cover body (36) is longer than the movable distance (X) of the fastening body (23) and the upper clamping body (26) , and the fastening body Even if (23) and the upper clamping body (26) are in the uppermost position, the second cover body (31) Since the lower portion and the upper portion of the third cover body (36) overlap, the external thread portion (20) is not exposed between the second cover body (31) and the third cover body (36), and the appearance is improved. You can show it clearly.
[Brief description of the drawings]
FIG. 1 is a right side view of a clamp mechanism showing an embodiment of the present invention.
FIG. 2 is a side view showing the usage state of the above.
FIG. 3 is a cross-sectional view of the main part in a state where the upper sandwiching body is raised to the uppermost position.
FIG. 4 is a cross-sectional view of the main part in a state where the upper sandwiching body is lowered to the lowest position.
[Explanation of symbols]
2 Axis column 3 Clamp mechanism 14 Illumination device body (equipment)
20 Male thread
21 First cover body 22 Female thread portion 23 Fastening body
24 Concave part 26 Upper clamping body
31 Second cover body 32 Lower clamping body
36 Third cover body A Desk top plate
X Moving distance of upper clamp
Y Depth of recess
Z Length of the third cover body

Claims

A shaft column (2) on which a male cylindrical portion (20) and a short cylindrical first cover body (21) covering the upper portion of the male screw portion (20) are formed, and fixed below the shaft column (2). The lower clamping body (32) thus formed, the upper clamping body ( 26) movable in the vertical direction along the axial column (2) , and the female screw part (22) screwed into the male screw part (20 ) and chromatic above the upper first cover member (21) an annular recess can cover the outer surface (24) is formed of Rutotomoni the upper holding member (26) abuts the Uekyo bearing member (26) lower holding member (32) side Ri name from the clamping member for moving (23) in the clamping body (23) and Uekyo also bearing member (26) is in the lowest, the first cover member (21) The depth (Y) of the recess (24) is such that the upper clamping body (26) can be moved so that the lower end of the recess does not come off from the recess (24) of the tightening body (23). Distance with is larger than (X), the clamping mechanism you, characterized in that the device (14) is attached directly to the shaft pillar (2).

A second cover body (31) that covers the male screw part (20) is integrally formed at the lower part of the upper holding body (26), and the male screw part (20) at the upper part of the lower holding body (32). ) And the third cover body (36) covered by the second cover body (31) is integrally formed, and the fastening body (23) and the upper clamping body (26) are at the uppermost position. Even so, the length (Z) of the third cover body (36) is such that the lower part of the second cover body (31) and the upper part of the third cover body (36) overlap each other. 23. The clamp mechanism according to claim 1, wherein the clamp mechanism is longer than a movable distance (X) of the upper holding member (23) and the upper holding member (26) .