JP3969481B2

JP3969481B2 - Camera device having rotation support mechanism

Info

Publication number: JP3969481B2
Application number: JP2002163265A
Authority: JP
Inventors: 敏也久保田
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2002-06-04
Filing date: 2002-06-04
Publication date: 2007-09-05
Anticipated expiration: 2022-06-04
Also published as: JP2004015223A

Description

【０００１】
【発明の属する技術分野】
この発明は、回転支持機構を有するカメラ装置に係り、特に監視用カメラやＴＶカメラ等を任意の方向に向ける機構を持った回転支持機構を有するカメラ装置において照明灯やスピーカなどカメラと一体に回転される被支持機器を取付ける回転支持機構を改良した回転支持機構を有するカメラ装置に関する。
【０００２】
【従来の技術】
図７は従来の監視用カメラの外観図、図８は監視用カメラの部分斜視図、図９は図８の部分断面図である。図７において、１は照明灯、２は水平回転部、３はカメラ部、４は固定部である。図８、９において、５は減速機、３５は垂直回転軸、１１は水平回転部２とカメラ部３の間の配線であり、垂直回転軸３５の側面の配線用穴３５ａを通って垂直回転軸３５に入り、カメラ部３まで到達している。
垂直回転軸３５は、減速機５の出力軸に固定され、減速機５の中心の穴を通って照明灯１側に伸びている。
【０００３】
１５はモータ、１６は減速機５の入力軸に取り付けられたタイミングベルトプーリ、１７はモータ１５の出力軸に取付けたタイミングベルトプーリ、１８はタイミングベルトプーリ１６、１７の間を結びモータ１４の動力を減速機５に伝えるタイミングベルトである。１２は垂直回転軸３５に取り付けられたはね、１３、１４は、はね１２のエッジを検出し垂直動作範囲及び動作原点を検出するためのフォトセンサである。
【０００４】
この構成において水平回転部２が固定部４に対して水平に回転し、カメラ部３が水平回転部２に対して垂直に回転することでカメラ部３を任意の方向に向けることができる。また、照明灯１は、水平回転部２を貫通する垂直回転軸３５によってカメラ部３と連結されており、カメラ部３と同じ方向を向く。
【０００５】
【発明が解決しようとする課題】
一般に監視用カメラ装置は、照明灯１が水平回転部２を貫通する垂直回転軸３５によってカメラ部３と連結されており、水平回転部２とカメラ部３を結ぶ配線１１を垂直回転軸３５の内側に通す配線用穴３５ａが必要である。そして、カメラ部３や照明灯１の受ける風荷重等の外力に耐え、カメラ部３の動きにあわせて照明灯１を高速に垂直方向に動作させることや、垂直回転軸３５の端に照明灯１を取り付けることから、照明灯１が受ける外力によって垂直回転軸３５がねじられるため、垂直回転軸３５は十分な剛性と強度が必要となる。
【０００６】
従って、垂直回転軸３５の外径はできるだけ大きく、内径は出来るだけ小さいことが望ましいが、上記の従来の監視用カメラ装置では、減速機５の中心の穴を通す必要があるため、外径は減速機５の穴の径によって制約され、内径は内部を通る配線１１の直径によって制限され、さらに、側面に配線用穴３５ａをあけるため、垂直回転軸３５に十分な強度と剛性をもたせることは難しいという問題があった。
【０００７】
また、垂直回転軸３５に取付けられたはね１２のエッジをフォトセンサ１３および１４で検出することで垂直動作範囲及び動作原点を検出しているので、中空回転軸３５が変形したり（損傷）すると、垂直動作範囲及び動作原点の検出精度が低下したり、検出できなくなる可能性があるという問題があった。
【０００８】
この発明は、上述のような課題を解決するためになされたもので、第一の目的は、十分な剛性と強度をもった回転支持機構を有するカメラ装置を提供するものである。
【０００９】
第二の目的は、照明灯等の被支持機器が過大な外力を受けた場合にも、変形や損傷を防止した信頼性のある回転支持機構を有するカメラ装置を提供するものである。
【００１０】
【課題を解決するための手段】
この発明に係る回転支持機構を有するカメラ装置は、カメラと被支持機器を連結し、前記カメラと前記被支持機器を一体に回転駆動する回転支持機構を有するカメラ装置において、
前記回転支持機構は、一端に設けられた摩擦結合部及び側面に配線用穴を有する中空で肉厚の中継軸と、前記摩擦結合部により前記中継軸に結合される中空回転軸と、を備えたものである。
【００１１】
また、カメラと被支持機器を連結し、前記カメラと前記被支持機器を一体に回転駆動する回転支持機構を有するカメラ装置において、前記回転支持機構は、配線用穴を有する摩擦結合部を一端に設けた中継軸と、前記摩擦結合部により前記中継軸に結合される中空回転軸と、を備えたものである。
【００１２】
また、カメラと被支持機器を連結し、前記カメラと前記被支持機器を一体に回転駆動する回転支持機構を有するカメラ装置において、前記回転支持機構は、中継軸と、中空回転軸と、前記中継軸と前記中空回転軸とを摩擦結合するとともに配線用穴を有する摩擦結合部と、を備えたものである。
【００１３】
【発明の実施の形態】
実施の形態１．
図１はこの発明の実施の形態１を示す監視用カメラの外観図、図２は監視用カメラの断面図、図３は監視用カメラの要部斜視図、図４は図３の部分断面図である。図１、図２において、１は被支持機器である照明灯、２は水平回転部、３はカメラ部、４は固定部、５は減速機、２０は垂直回転軸であり、中空回転軸６と中継軸７から構成される。８は照明灯取付フランジ、９は垂直軸部フレーム、１０はカバーである。
【００１４】
図２、図３、図４において、７ａは中継軸の側面に設けられた配線用穴であり、中継軸７の一端からこの配線用穴７ａまで中空部となっている。
２１は中継軸７の中空部側の端部に設けられ、中空回転軸６を結合する摩擦結合部であり、フランジ７ｂ、スリ割部７ｃ、スリ割部７ｃに設けられた穴（図示せず）を介してネジ穴２２に螺合するボルト２１から構成される。
中空回転軸６の外形は従来のと同様に減速機５の穴の径以下のものであるが、中継軸７の外形は減速機５の穴の径に制限されないので中空回転軸６の外形より大きくし、内径は従来と同様に配線１１の外径に合わせたものとして、肉厚を中空回転軸６より厚くしている。
１１は水平回転部２とカメラ部３の間の配線であり、中継軸７の側面の配線用穴７ａを通って中空回転軸６に入り、カメラ部３まで到達している。中空回転軸６は、減速機５の出力軸に固定され、減速機５の中心の穴を通って照明灯側に伸びている。
【００１５】
１５はモータ、１６は減速機５の入力軸に取り付けられたタイミングベルトプーリ、１７はモータ１５の出力軸に取付けたタイミングベルトプーリ、１８はタイミングベルトプーリ１６、１７の間を結びモータ１４の動力を減速機５に伝えるタイミングベルトである。１２は垂直回転軸３５に取り付けられたはね、１３、１４は、はね１２のエッジを検出し垂直動作範囲及び動作原点を検出するためのフォトセンサである。
【００１６】
次に、図１〜４により動作を説明する。まず、垂直回転軸２０関連の組み立ては、垂直回転軸２０の中空回転軸６の一端を減速機５の出力軸に固定し、中継軸７の摩擦結合部２３に中空回転軸６の他端を挿入し、ボルト２１をスリ割部７ｃのネジ穴２２に螺合して締めることにより、中空回転軸６と中継軸７を結合する。このとき、摩擦結合力が中空回転軸６の許容強度以下となるように、ボルト２１の締め付けトルクをあらかじめ定めておく。
【００１７】
次に、中継軸７をカバー１０を貫通する照明灯取り付けフランジ８とボルトによって結合することにより、照明灯１が垂直回転軸２０によりカメラ部３と連結される。
【００１８】
次に、監視用カメラの駆動は、電源を入れるとモータ１５が回転し、モータ１５の出力軸に取付けたタイミングベルトプーリ１７と減速機５の入力軸のタイミングベルトプーリ１６の間を結ぶタイミングベルト１８によってモータ１４の動力が減速機５に伝えられる。そして、垂直回転軸２０が回転する。
一方水平回転部２は水平回転部用モータで駆動され、固定部４に対して水平に回転し、カメラ部３が水平回転部２に対して垂直に回転することでカメラ部３を任意の方向に向けることができる。また、照明灯１は、水平回転部２を貫通する垂平回転軸２０によってカメラ部３と連結されており、カメラ部３と同じ方向を向く。
【００１９】
また、中空回転軸６には、はね１２が取付けてあり、はねのエッジをフォトセンサ１３および１４で検出することで垂直動作範囲及び動作原点を検出する。
【００２０】
このように監視カメラ装置が作動中には、カメラ部３の動きに合わせて照明灯１を高速に垂直方向に動作させるため、また、照明灯１に風荷重等の外力がかかることもあり、垂直回転軸２０を構成する中空回転軸６と中継軸７には大きな力が加わる。しかし、中継軸７の外径が中空回転軸６に比べ大きくし、肉厚としており（例えば、中空回転軸６の厚さ２ｍｍ、中継軸７の厚さ７ｍｍ）配線用穴７ａがあっても十分な剛性と強度を持たせることができる。
【００２１】
また、中空回転軸６は、従来のもより外径を大きくできないので厚さも従来のものと同じであるが、配線穴がなく、長さが従来のものより短いので十分な剛性と強度を持たせることができる。
万一、照明灯１に過大な外力が加わった場合、中空回転軸６に非常に大きな力が加わり許容応力を越えそうになっても、摩擦結合部７ｂにより中空回転軸６と中継軸７との結合が緩み間が滑るので、加わった力を逃がすので、変形や損傷を防ぐことができる。
従って、中空回転軸６に取付けられたばね１２のエッジをフォトセンサ１３、１４で検出することで垂直動作範囲及び動作原点を検出する検出精度が低下したり、検出できなくなるのを防ぐことができる。
【００２２】
以上のように、中継軸７の外径を十分大きく取ることで、側面に配線穴７ａを、あけても十分な強度と剛性を確保することができる。
また、中空回転軸６は、配線穴がなく、長さが従来のものより短いので十分な剛性と強度を持たせることができる。
また、中空回転軸６に非常に大きな力が加わり許容応力を越えるときは、摩擦結合部２３により中空回転軸６と中継軸７との結合が緩み間が滑るので、加わった力を逃がすので、変形や損傷を防ぐことができる。
また、垂直動作範囲及び動作原点を検出する検出精度の信頼性を向上することができる。
【００２３】
なお、本実施の形態では、監視用カメラ装置としてカメラ部３に連結された照明灯１をを示したが、カメラ装置はＴＶカメラでもよく、照明灯１はスピーカーでもよい。
【００２４】
実施の形態２．
図５はこの発明の実施の形態２を示す監視用カメラの垂直回転軸の構成図であり、同図（ａ）は斜視図、同図（ｂ）は断面図である。
図５（ａ）、（ｂ）において、２０は垂直回転軸であり、中空回転軸６と中継軸２５から構成される。
２４は中継軸２５の中空部側の端部に設けられ、中空回転軸６を結合する摩擦結合部である。摩擦結合部２４において、２５ｂはフランジｂ、２５ｄは中空回転軸６が挿入される底付きの挿入穴、２５ａは挿入穴２５ｄに沿って溝を設けて形成し、側面が挿入口２５ｄに沿って開口した配線穴であり、挿入穴２５ｄに中空回転軸６を挿入したときに、フランジ２５ｂの軸方向に開口し、中空回転軸６の内部に連通するようにしている。２５ｃはスリ割部、２６はスリ割部７ｃに設けられた穴（図示せず）を介してネジ穴２７に螺合するボルトである。
【００２５】
中空回転軸６の外形は従来のと同様に減速機５の穴の径以下のものであるが、中継軸２５の摩擦結合部２４は中空回転軸６の外形より大きく、内径はフランジ２５ｂの部分のみ中空の挿入穴２５ｄとし、摩擦結合部２５ｂでないところは、中空回転軸６と同じ程度である。
【００２６】
このような構成において、垂直回転軸２０の組み立ては、中継軸２５の摩擦結合部２５ｂの挿入穴２５ｄに中空回転軸６を挿入穴２５ｄの底部の手前まで挿入し、ボルト２６をスリ割部２５ｃのネジ穴２７に螺合して締めることにより、中空回転軸６と中継軸２５を結合する。このとき、摩擦結合力が中空回転軸６の許容強度以下となるように、ボルト２１の締め付けトルクをあらかじめ定めておく。配線は図示してないが、摩擦結合部２４のフランジ２５ｂの軸方向の面の配線用穴７ａを通って、挿入穴２５ｄの底部から折曲げられ中空軸６の端部から内部に挿入される。
なお、他の組み立て及び動作は実施の形態１と同じであり説明を省略する。
【００２７】
以上のように、中継軸２５の摩擦結合部２４の外径を大きくして、配線用穴２５ａを設けたので、十分な剛性と強度を持たせることができる。
また、中空回転軸６は、配線穴がなく、長さが従来のものより短いので十分な剛性と強度を持たせることができる。
また、中空回転軸６に非常に大きな力が加わり許容応力を越えるときは、摩擦結合部２４により中空回転軸６と中継軸２５との結合が緩み間が滑るので、加わった力を逃がすので、変形や損傷を防ぐことができる。
また、垂直動作範囲及び動作原点を検出する検出精度の信頼性を向上することができる。
【００２８】
なお、本実施の形態では配線用穴２５ａを摩擦結合部２４のフランジ２５ｂの軸方向面に設けたが、フランジ２５ｂの側面に挿入穴２５ｄの底部に連通するように設けてもよい。
【００２９】
実施の形態３．
図６はこの発明の実施の形態３を示す監視用カメラの垂直回転軸の斜視図である。図６において、２０は垂直回転軸であり、中空回転軸６と中継軸３１及び中空回転軸６と中継軸３１を摩擦結合で結合する摩擦結合部３２から構成される。摩擦結合部３２において、３２ｂは結合部３２の側面に設けられたスリ割部、３２ａはスリ割部に沿って設けられた配線用穴、３３はスリ割部３２ｂに設けられた穴（図示せず）に挿入され、スリ割部３２ｂを締めるボルトである。
【００３０】
中空回転軸６の外形は従来のと同様あり、中継軸３１も中空回転軸６と同じ程度である。摩擦結合部３２は中空回転軸６の外形より大きい。
【００３１】
このような構成において、垂直回転軸２０の組み立ては、中継回転軸６と中継軸３１を摩擦結合部３２の両側から配線用穴３２ａを塞がないように挿入し、ボルト３３によりスリ割部３２ｂ締めることにより、中空回転軸６と中継軸３１を結合する。このとき、摩擦結合力が中空回転軸６と中継軸３１の許容強度以下となるように、ボルト３３の締め付けトルクをあらかじめ定めておく。配線は図示してないが、摩擦結合部３２の配線用穴３２ａを通って、中空軸６の内部に挿入される。
なお、他の組み立て及び動作は実施の形態１と同じであり説明を省略する。
【００３２】
以上のように、中空回転軸６及び中空軸３１より外径の大きい摩擦結合部３２に配線用穴３２ａを設けたので、十分な剛性と強度を持たせることができる。
また、中空回転軸６は、配線穴がなく、長さが従来のものより短いので十分な剛性と強度を持たせることができる。
また、中空回転軸６に非常に大きな力が加わり許容応力を越えるときは、摩擦結合部３２により中空回転軸６と中継軸３１との結合が緩み間が滑るので、加わった力を逃がすので、変形や損傷を防ぐことができる。
また、垂直動作範囲及び動作原点を検出する検出精度の信頼性を向上することができる。
【００３３】
なお、本実施の形態では配線用穴３２ａを摩擦結合部２４のスリ割部３２ｂに沿って設けたが、スリ割部３２ｂから離れた部分の側面に設けてもよい。
【００３４】
【発明の効果】
以上のように、この発明によれば、カメラと被支持機器を連結し、前記カメラと前記被支持機器を一体に回転駆動する回転支持機構を有するカメラ装置において、前記回転支持機構は、一端に設けられた摩擦結合部及び側面に配線用穴を有する中空で肉厚の中継軸と、前記摩擦結合部により前記中継軸に結合される中空回転軸と、を備えたので、照明灯支持機構に配線穴をあけても十分な強度と剛性を確保することができ、非常に大きな力が加わっても、変形や損傷を防ぐことができ、信頼性を向上させることができる。
【００３５】
また、カメラと被支持機器を連結し、前記カメラと前記被支持機器を一体に回転駆動する回転支持機構を有するカメラ装置において、前記回転支持機構は、配線用穴を有する摩擦結合部を一端に設けた中継軸と、前記摩擦結合部により前記中継軸に結合される中空回転軸と、を備えたので、照明灯支持機構に配線穴をあけても十分な強度と剛性を確保することができ、非常に大きな力が加わっても、変形や損傷を防ぐことができ、信頼性を向上させることができる。
【００３６】
また、カメラと被支持機器を連結し、前記カメラと前記被支持機器を一体に回転駆動する回転支持機構を有するカメラ装置において、前記回転支持機構は、中継軸と、中空回転軸と、前記中継軸と前記中空回転軸とを摩擦結合するとともに配線用穴を有する摩擦結合部と、を備えたので、照明灯支持機構に配線穴をあけても十分な強度と剛性を確保することができ、非常に大きな力が加わっても、変形や損傷を防ぐことができ、信頼性を向上させることができる。
【図面の簡単な説明】
【図１】この発明の実施の形態１を示す回転支持機構を有するカメラ装置の外観図である。
【図２】この発明の実施の形態１を示す回転支持機構を有するカメラ装置の断面図である。
【図３】この発明の実施の形態１を示す回転支持機構を有するカメラ装置の要部斜視図である。
【図４】図３の部分断面図である。
【図５】この発明の実施の形態２を示す回転支持機構を有するカメラ装置の要部構成図である。
【図６】この発明の実施の形態３を示す回転支持機構を有するカメラ装置の要部斜視図である。
【図７】従来の回転支持機構を有するカメラ装置の外観図である。
【図８】従来の回転支持機構を有するカメラ装置の要部斜視図である。
【図９】図８の部分断面図である。
【符号の説明】
１照明灯、２水平回転部、３カメラ部、６中空回転軸、２０垂直回転軸、７中継軸、１１配線、７ａ、２５ａ、３２ａ配線用穴、２１、２４、３２摩擦結合部、７ｂ、２５ｂフランジ、７ｃ、２５ｃ、３２ｂスリ割部、２１、２６、３３ボルト。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a camera device having a rotation support mechanism, and in particular, in a camera device having a rotation support mechanism having a mechanism for directing a surveillance camera, a TV camera, or the like in an arbitrary direction, it rotates together with a camera such as an illumination lamp or a speaker. The present invention relates to a camera apparatus having a rotation support mechanism in which a rotation support mechanism for mounting a supported device is improved.
[0002]
[Prior art]
7 is an external view of a conventional surveillance camera, FIG. 8 is a partial perspective view of the surveillance camera, and FIG. 9 is a partial sectional view of FIG. In FIG. 7, 1 is an illumination lamp, 2 is a horizontal rotating part, 3 is a camera part, and 4 is a fixed part. 8 and 9, 5 is a speed reducer, 35 is a vertical rotating shaft, 11 is a wiring between the horizontal rotating portion 2 and the camera portion 3, and rotates vertically through a wiring hole 35 a on the side surface of the vertical rotating shaft 35. It enters the axis 35 and reaches the camera unit 3.
The vertical rotation shaft 35 is fixed to the output shaft of the speed reducer 5 and extends toward the illuminating lamp 1 through the hole in the center of the speed reducer 5.
[0003]
15 is a motor, 16 is a timing belt pulley attached to the input shaft of the speed reducer 5, 17 is a timing belt pulley attached to the output shaft of the motor 15, and 18 is a timing belt pulley 16, 17 that connects the power of the motor 14. Is a timing belt for transmitting the signal to the speed reducer 5. Reference numeral 12 denotes a spring attached to the vertical rotation shaft 35, and reference numerals 13 and 14 denote photosensors for detecting the edge of the splash 12 and detecting the vertical operation range and the operation origin.
[0004]
In this configuration, the horizontal rotating unit 2 rotates horizontally with respect to the fixed unit 4, and the camera unit 3 rotates vertically with respect to the horizontal rotating unit 2, whereby the camera unit 3 can be directed in an arbitrary direction. Further, the illuminating lamp 1 is connected to the camera unit 3 by a vertical rotation shaft 35 penetrating the horizontal rotation unit 2 and faces the same direction as the camera unit 3.
[0005]
[Problems to be solved by the invention]
In general, in the monitoring camera device, the illuminating lamp 1 is connected to the camera unit 3 by a vertical rotation shaft 35 penetrating the horizontal rotation unit 2, and the wiring 11 connecting the horizontal rotation unit 2 and the camera unit 3 is connected to the vertical rotation shaft 35. Wiring holes 35a that pass through the inside are necessary. It can withstand external forces such as wind loads received by the camera unit 3 and the illuminating lamp 1, operates the illuminating lamp 1 in the vertical direction at high speed in accordance with the movement of the camera unit 3, and illuminates at the end of the vertical rotation shaft 35. Since the vertical rotation shaft 35 is twisted by the external force received by the illuminating lamp 1, the vertical rotation shaft 35 needs to have sufficient rigidity and strength.
[0006]
Therefore, it is desirable that the outer diameter of the vertical rotation shaft 35 be as large as possible and the inner diameter be as small as possible. However, in the conventional surveillance camera device described above, since the center hole of the speed reducer 5 needs to be passed, the outer diameter is It is constrained by the diameter of the hole of the speed reducer 5, the inner diameter is limited by the diameter of the wiring 11 passing through the inside, and the wiring hole 35a is formed on the side surface, so that the vertical rotating shaft 35 has sufficient strength and rigidity. There was a problem that it was difficult.
[0007]
Further, since the vertical movement range and the movement origin are detected by detecting the edge of the splash 12 attached to the vertical rotation shaft 35 by the photosensors 13 and 14, the hollow rotation shaft 35 is deformed (damaged). Then, there is a problem that the detection accuracy of the vertical operation range and the operation origin may be lowered or may not be detected.
[0008]
The present invention has been made to solve the above-described problems, and a first object is to provide a camera apparatus having a rotation support mechanism having sufficient rigidity and strength.
[0009]
A second object is to provide a camera device having a reliable rotation support mechanism that prevents deformation and damage even when a supported device such as an illumination lamp receives an excessive external force.
[0010]
[Means for Solving the Problems]
A camera device having a rotation support mechanism according to the present invention is a camera device having a rotation support mechanism that connects a camera and a supported device and rotationally drives the camera and the supported device together.
The rotation support mechanism includes a friction coupling portion provided at one end, a hollow thick relay shaft having a wiring hole on a side surface, and a hollow rotation shaft coupled to the relay shaft by the friction coupling portion. It is a thing.
[0011]
Further, in the camera device having a rotation support mechanism that connects the camera and the supported device and rotationally drives the camera and the supported device integrally, the rotation support mechanism has a friction coupling portion having a wiring hole at one end. A relay shaft provided; and a hollow rotary shaft coupled to the relay shaft by the frictional coupling portion.
[0012]
In addition, in the camera device having a rotation support mechanism that connects the camera and the supported device and rotationally drives the camera and the supported device integrally, the rotation support mechanism includes a relay shaft, a hollow rotation shaft, and the relay. And a friction coupling portion that frictionally couples the shaft and the hollow rotary shaft and has a wiring hole.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
1 is an external view of a surveillance camera showing Embodiment 1 of the present invention, FIG. 2 is a sectional view of the surveillance camera, FIG. 3 is a perspective view of essential parts of the surveillance camera, and FIG. 4 is a partial sectional view of FIG. It is. 1 and 2, reference numeral 1 denotes an illuminating lamp which is a supported device, 2 denotes a horizontal rotating unit, 3 denotes a camera unit, 4 denotes a fixing unit, 5 denotes a speed reducer, 20 denotes a vertical rotating shaft, and a hollow rotating shaft 6 And the relay shaft 7. Reference numeral 8 denotes an illumination lamp mounting flange, 9 denotes a vertical shaft frame, and 10 denotes a cover.
[0014]
2, 3, and 4, reference numeral 7 a denotes a wiring hole provided on the side surface of the relay shaft, and a hollow portion extends from one end of the relay shaft 7 to the wiring hole 7 a.
Reference numeral 21 denotes a friction coupling portion that is provided at the end of the relay shaft 7 on the hollow portion side and couples the hollow rotary shaft 6, and includes holes (not shown) provided in the flange 7 b, the slot portion 7 c, and the slot portion 7 c. ), And the bolt 21 that is screwed into the screw hole 22.
The outer shape of the hollow rotary shaft 6 is equal to or smaller than the diameter of the hole of the speed reducer 5 as in the prior art, but the outer shape of the relay shaft 7 is not limited to the diameter of the hole of the speed reducer 5, so The inner diameter is made to match the outer diameter of the wiring 11 as in the prior art, and the wall thickness is made thicker than the hollow rotary shaft 6.
Reference numeral 11 denotes wiring between the horizontal rotating unit 2 and the camera unit 3, which enters the hollow rotating shaft 6 through the wiring hole 7 a on the side surface of the relay shaft 7 and reaches the camera unit 3. The hollow rotary shaft 6 is fixed to the output shaft of the speed reducer 5 and extends toward the illuminating lamp through the center hole of the speed reducer 5.
[0015]
15 is a motor, 16 is a timing belt pulley attached to the input shaft of the speed reducer 5, 17 is a timing belt pulley attached to the output shaft of the motor 15, and 18 is a timing belt pulley 16, 17 that connects the power of the motor 14. Is a timing belt for transmitting the signal to the speed reducer 5. Reference numeral 12 denotes a spring attached to the vertical rotation shaft 35, and reference numerals 13 and 14 denote photosensors for detecting the edge of the splash 12 and detecting the vertical operation range and the operation origin.
[0016]
Next, the operation will be described with reference to FIGS. First, in the assembly related to the vertical rotating shaft 20, one end of the hollow rotating shaft 6 of the vertical rotating shaft 20 is fixed to the output shaft of the speed reducer 5, and the other end of the hollow rotating shaft 6 is connected to the friction coupling portion 23 of the relay shaft 7. The hollow rotary shaft 6 and the relay shaft 7 are joined by inserting and fastening the bolt 21 into the screw hole 22 of the slit portion 7c. At this time, the tightening torque of the bolt 21 is determined in advance so that the frictional coupling force is less than the allowable strength of the hollow rotary shaft 6.
[0017]
Next, the illuminating lamp 1 is connected to the camera unit 3 by the vertical rotation shaft 20 by connecting the relay shaft 7 with the illuminating lamp mounting flange 8 penetrating the cover 10 and a bolt.
[0018]
Next, the monitoring camera is driven by the timing belt connecting the timing belt pulley 17 attached to the output shaft of the motor 15 and the timing belt pulley 16 of the input shaft of the speed reducer 5 when the power is turned on. The power of the motor 14 is transmitted to the speed reducer 5 by 18. Then, the vertical rotation shaft 20 rotates.
On the other hand, the horizontal rotation unit 2 is driven by a horizontal rotation unit motor, rotates horizontally with respect to the fixed unit 4, and the camera unit 3 rotates perpendicularly with respect to the horizontal rotation unit 2, thereby moving the camera unit 3 in an arbitrary direction. Can be directed to. Further, the illuminating lamp 1 is connected to the camera unit 3 by a vertical rotation shaft 20 that penetrates the horizontal rotation unit 2, and faces the same direction as the camera unit 3.
[0019]
Further, a splash 12 is attached to the hollow rotary shaft 6, and the vertical motion range and the motion origin are detected by detecting the splash edge with the photosensors 13 and 14.
[0020]
As described above, during operation of the monitoring camera device, the illumination lamp 1 is moved in the vertical direction at high speed in accordance with the movement of the camera unit 3, and an external force such as wind load may be applied to the illumination lamp 1. A large force is applied to the hollow rotary shaft 6 and the relay shaft 7 constituting the vertical rotary shaft 20. However, the outer diameter of the relay shaft 7 is larger than that of the hollow rotary shaft 6 and is thick (for example, the thickness of the hollow rotary shaft 6 is 2 mm and the thickness of the relay shaft 7 is 7 mm). Sufficient rigidity and strength can be provided.
[0021]
Further, the hollow rotary shaft 6 has the same thickness as the conventional one because the outer diameter cannot be increased more than the conventional one, but has sufficient rigidity and strength because there is no wiring hole and the length is shorter than the conventional one. Can be made.
If an excessive external force is applied to the illuminating lamp 1, even if a very large force is applied to the hollow rotating shaft 6 and the allowable stress is likely to be exceeded, the friction rotating portion 7b causes the hollow rotating shaft 6 and the relay shaft 7 to Since the coupling between the two is loose, the applied force is released, so that deformation and damage can be prevented.
Therefore, by detecting the edge of the spring 12 attached to the hollow rotary shaft 6 with the photosensors 13 and 14, it is possible to prevent the detection accuracy for detecting the vertical operation range and the operation origin from being lowered or not detected.
[0022]
As described above, by taking the outer diameter of the relay shaft 7 sufficiently large, sufficient strength and rigidity can be ensured even if the wiring hole 7a is formed in the side surface.
Moreover, since the hollow rotating shaft 6 has no wiring hole and is shorter than the conventional one, it can have sufficient rigidity and strength.
In addition, when a very large force is applied to the hollow rotating shaft 6 and exceeds the allowable stress, the coupling between the hollow rotating shaft 6 and the relay shaft 7 is slipped loosely by the friction coupling portion 23, so that the applied force is released. Deformation and damage can be prevented.
Further, it is possible to improve the reliability of detection accuracy for detecting the vertical operation range and the operation origin.
[0023]
In the present embodiment, the illumination lamp 1 connected to the camera unit 3 is shown as the monitoring camera apparatus. However, the camera apparatus may be a TV camera, and the illumination lamp 1 may be a speaker.
[0024]
Embodiment 2. FIG.
5A and 5B are configuration diagrams of a vertical rotation shaft of a surveillance camera according to Embodiment 2 of the present invention. FIG. 5A is a perspective view and FIG. 5B is a cross-sectional view.
In FIGS. 5A and 5B, reference numeral 20 denotes a vertical rotating shaft, which includes a hollow rotating shaft 6 and a relay shaft 25.
Reference numeral 24 denotes a friction coupling portion that is provided at an end of the relay shaft 25 on the hollow portion side and couples the hollow rotary shaft 6. In the friction coupling portion 24, 25b is a flange b, 25d is an insertion hole with a bottom into which the hollow rotary shaft 6 is inserted, 25a is formed by providing a groove along the insertion hole 25d, and a side surface is formed along the insertion port 25d. The open wiring hole is opened in the axial direction of the flange 25b when the hollow rotary shaft 6 is inserted into the insertion hole 25d, and communicates with the inside of the hollow rotary shaft 6. 25c is a slot part, and 26 is a bolt that is screwed into the screw hole 27 via a hole (not shown) provided in the slot part 7c.
[0025]
The outer diameter of the hollow rotary shaft 6 is smaller than the diameter of the hole of the speed reducer 5 as in the prior art, but the friction coupling portion 24 of the relay shaft 25 is larger than the outer shape of the hollow rotary shaft 6 and the inner diameter is a portion of the flange 25b. Only the hollow insertion hole 25d and not the friction coupling portion 25b are the same as the hollow rotary shaft 6.
[0026]
In such a configuration, the vertical rotary shaft 20 is assembled by inserting the hollow rotary shaft 6 into the insertion hole 25d of the friction coupling portion 25b of the relay shaft 25 to the front of the bottom of the insertion hole 25d, and the bolt 26 with the slit 25c. The hollow rotary shaft 6 and the relay shaft 25 are coupled by being screwed into the screw holes 27 and tightened. At this time, the tightening torque of the bolt 21 is determined in advance so that the frictional coupling force is less than the allowable strength of the hollow rotary shaft 6. Although the wiring is not shown, it is bent from the bottom of the insertion hole 25d through the wiring hole 7a on the axial surface of the flange 25b of the friction coupling portion 24 and inserted into the inside from the end of the hollow shaft 6. .
Other assembly and operation are the same as those in the first embodiment, and a description thereof will be omitted.
[0027]
As described above, since the outer diameter of the friction coupling portion 24 of the relay shaft 25 is increased and the wiring hole 25a is provided, sufficient rigidity and strength can be provided.
Moreover, since the hollow rotating shaft 6 has no wiring hole and is shorter than the conventional one, it can have sufficient rigidity and strength.
In addition, when a very large force is applied to the hollow rotating shaft 6 and exceeds the allowable stress, the coupling between the hollow rotating shaft 6 and the relay shaft 25 is loosened by the frictional coupling portion 24, so that the applied force is released. Deformation and damage can be prevented.
Further, it is possible to improve the reliability of detection accuracy for detecting the vertical operation range and the operation origin.
[0028]
In the present embodiment, the wiring hole 25a is provided on the axial direction surface of the flange 25b of the friction coupling portion 24. However, the wiring hole 25a may be provided on the side surface of the flange 25b so as to communicate with the bottom portion of the insertion hole 25d.
[0029]
Embodiment 3 FIG.
FIG. 6 is a perspective view of the vertical rotation axis of the surveillance camera according to Embodiment 3 of the present invention. In FIG. 6, reference numeral 20 denotes a vertical rotation shaft, which includes a hollow rotation shaft 6 and a relay shaft 31, and a friction coupling portion 32 that couples the hollow rotation shaft 6 and the relay shaft 31 by friction coupling. In the frictional coupling portion 32, 32b is a slit portion provided on the side surface of the coupling portion 32, 32a is a wiring hole provided along the slit portion, and 33 is a hole provided in the slit portion 32b (not shown). And a bolt for fastening the slit portion 32b.
[0030]
The outer shape of the hollow rotary shaft 6 is the same as the conventional one, and the relay shaft 31 is also the same as the hollow rotary shaft 6. The friction coupling portion 32 is larger than the outer shape of the hollow rotary shaft 6.
[0031]
In such a configuration, the vertical rotary shaft 20 is assembled by inserting the relay rotary shaft 6 and the relay shaft 31 from both sides of the friction coupling portion 32 so as not to block the wiring hole 32a, and then using the bolt 33 to form the slit portion 32b. By tightening, the hollow rotary shaft 6 and the relay shaft 31 are coupled. At this time, the tightening torque of the bolt 33 is determined in advance so that the frictional coupling force is less than the allowable strength of the hollow rotary shaft 6 and the relay shaft 31. Although the wiring is not shown, the wiring is inserted into the hollow shaft 6 through the wiring hole 32 a of the friction coupling portion 32.
Other assembly and operation are the same as those in the first embodiment, and a description thereof will be omitted.
[0032]
As described above, since the wiring hole 32a is provided in the friction coupling portion 32 having a larger outer diameter than the hollow rotating shaft 6 and the hollow shaft 31, sufficient rigidity and strength can be provided.
Moreover, since the hollow rotating shaft 6 has no wiring hole and is shorter than the conventional one, it can have sufficient rigidity and strength.
In addition, when a very large force is applied to the hollow rotating shaft 6 and exceeds the allowable stress, the coupling between the hollow rotating shaft 6 and the relay shaft 31 is slipped loosely by the friction coupling portion 32, so that the applied force is released. Deformation and damage can be prevented.
Further, it is possible to improve the reliability of detection accuracy for detecting the vertical operation range and the operation origin.
[0033]
In the present embodiment, the wiring hole 32a is provided along the slit portion 32b of the frictional coupling portion 24. However, the wiring hole 32a may be provided on the side surface of the portion away from the slit portion 32b.
[0034]
【The invention's effect】
As described above, according to the present invention, in the camera device having the rotation support mechanism that connects the camera and the supported device and rotationally drives the camera and the supported device together, the rotation support mechanism is at one end. Since it includes a provided friction coupling portion and a hollow and thick relay shaft having a wiring hole on a side surface and a hollow rotary shaft coupled to the relay shaft by the friction coupling portion, the illumination lamp support mechanism Even if a wiring hole is made, sufficient strength and rigidity can be secured, and even when a very large force is applied, deformation and damage can be prevented, and reliability can be improved.
[0035]
Further, in the camera device having a rotation support mechanism that connects the camera and the supported device and rotationally drives the camera and the supported device integrally, the rotation support mechanism has a friction coupling portion having a wiring hole at one end. Since the relay shaft provided and the hollow rotary shaft coupled to the relay shaft by the friction coupling portion, sufficient strength and rigidity can be secured even if a wiring hole is made in the illumination lamp support mechanism. Even when a very large force is applied, deformation and damage can be prevented, and reliability can be improved.
[0036]
In addition, in the camera device having a rotation support mechanism that connects the camera and the supported device and rotationally drives the camera and the supported device integrally, the rotation support mechanism includes a relay shaft, a hollow rotation shaft, and the relay. Since the shaft and the hollow rotating shaft are frictionally coupled and a friction coupling portion having a wiring hole, sufficient strength and rigidity can be ensured even if a wiring hole is formed in the illumination lamp support mechanism, Even if a very large force is applied, deformation and damage can be prevented, and reliability can be improved.
[Brief description of the drawings]
FIG. 1 is an external view of a camera apparatus having a rotation support mechanism according to Embodiment 1 of the present invention.
FIG. 2 is a cross-sectional view of a camera apparatus having a rotation support mechanism according to Embodiment 1 of the present invention.
FIG. 3 is a perspective view of a main part of a camera device having a rotation support mechanism according to Embodiment 1 of the present invention.
4 is a partial cross-sectional view of FIG. 3;
FIG. 5 is a main part configuration diagram of a camera apparatus having a rotation support mechanism according to a second embodiment of the present invention.
6 is a perspective view of a main part of a camera apparatus having a rotation support mechanism according to Embodiment 3 of the present invention. FIG.
FIG. 7 is an external view of a camera device having a conventional rotation support mechanism.
FIG. 8 is a perspective view of a main part of a camera device having a conventional rotation support mechanism.
FIG. 9 is a partial cross-sectional view of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Illumination lamp, 2 Horizontal rotation part, 3 Camera part, 6 Hollow rotation axis, 20 Vertical rotation axis, 7 Relay axis, 11 Wiring, 7a, 25a, 32a Wiring hole, 21, 24, 32 Friction coupling part, 7b, 25b Flange, 7c, 25c, 32b Slotted part, 21, 26, 33 Bolt.

Claims

In a camera device having a rotation support mechanism for connecting a camera and a supported device and driving the camera and the supported device to rotate together,
The rotation support mechanism is
A hollow and thick relay shaft having a friction coupling portion provided at one end and a wiring hole on a side surface;
A hollow rotary shaft coupled to the relay shaft by the friction coupling portion;
A camera apparatus having a rotation support mechanism.

In a camera device having a rotation support mechanism for connecting a camera and a supported device and driving the camera and the supported device to rotate together,
The rotation support mechanism is
A relay shaft provided at one end with a friction coupling portion having a wiring hole;
A hollow rotary shaft coupled to the relay shaft by the friction coupling portion;
A camera apparatus having a rotation support mechanism.

In a camera device having a rotation support mechanism for connecting a camera and a supported device and driving the camera and the supported device to rotate together,
The rotation support mechanism is
A relay shaft,
A hollow rotating shaft;
A friction coupling portion that frictionally couples the relay shaft and the hollow rotary shaft and has a wiring hole;
A camera apparatus having a rotation support mechanism.