JPH01128229U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１〜４図は本考案によるカメラの自動焦点・
露出作動装置の第１実施例を示す図であり、第１
図はその初期状態を示す正面図、第２図はその側
面図、第３図は一方クラツチのカラ回り状態を示
す部分側面図、第４図は駆動リングの回転量、レ
ンズ部の移動量、および露出量と、時間との関係
を示す特性図、第５〜７図は本考案の第２実施例
を示す図であり、第５図はその初期状態を示す正
面図、第６図はその作動状態を示し距離リングが
最大回転角度θ_ｍ回転したときの正面図、第７図
は駆動リングの回転量、レンズ部の移動量、およ
び露出量と、時間との関係を示す特性図、第８図
は従来のカメラの自動焦点・露出作動装置におけ
るレンズ部の移動量および露出量と時間との関係
を示す特性図である。 １……ステツプモータ、２……歯車、３……中
間歯車、４……駆動リング（駆動部材）、４ａ…
…係合片、４ｂ……歯部、５，１６……距離リン
グ（距離部材）、５ａ……係合ピン、５ｂ……カ
ム部、５ｃ，１６ｂ……ラチエツト歯、６，２０
……ラチエツト爪、６ａ，２０ａ……爪部、７，
１１，１３，１５，１７，２２，２５……バネ、
８，１０，２１，２４……固定軸、９……一方ク
ラツチ、９ａ……ピニオン部、９ｂ……ケリ枠部
、９ｃ……駆動ピン、１２，１９，２３ｂ，２６
……係合ピン、１４……レンズ部、１６ａ，１６
ｃ……腕部、１８……駆動ピン、２０ｂ……係合
部、２３……ラチエツトレバー、２３ａ……爪部
、３０……カム従動ピン。 Figures 1 to 4 show the automatic focus of the camera according to the present invention.
FIG. 2 is a diagram showing a first embodiment of an exposure actuating device;
The figure is a front view showing the initial state, FIG. 2 is a side view, FIG. 3 is a partial side view showing one clutch rotating freely, and FIG. 4 shows the amount of rotation of the drive ring, the amount of movement of the lens part, 5 to 7 are diagrams showing the second embodiment of the present invention, FIG. 5 is a front view showing its initial state, and FIG. 6 is a characteristic diagram showing the relationship between exposure amount and time. Fig. 7 is a front view showing the operating state when the distance ring has been rotated by the maximum rotation angle θ _m ; FIG. 8 is a characteristic diagram showing the relationship between the amount of movement of the lens section, the amount of exposure, and time in a conventional autofocus/exposure operating device of a camera. DESCRIPTION OF SYMBOLS 1...Step motor, 2...Gear, 3...Intermediate gear, 4...Drive ring (drive member), 4a...
...Engagement piece, 4b...Tooth portion, 5, 16...Distance ring (distance member), 5a...Engagement pin, 5b...Cam portion, 5c, 16b...Ratchet tooth, 6,20
...Ratchet claw, 6a, 20a...Claw part, 7,
11, 13, 15, 17, 22, 25... spring,
8, 10, 21, 24... Fixed shaft, 9... One clutch, 9a... Pinion part, 9b... Button frame part, 9c... Drive pin, 12, 19, 23b, 26
...Engaging pin, 14...Lens portion, 16a, 16
c...Arm portion, 18...Drive pin, 20b...Engagement portion, 23...Ratchet lever, 23a...Claw portion, 30...Cam follower pin.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 制御回路により回転制御されるモータにより駆
動されこの回転方向によりレンズ焦点機構および
開閉羽根機構を駆動可能な駆動部材と、周部にラ
チエツト歯が形成され前記駆動部材とともに動く
ことにより前記レンズ焦点機構を駆動する距離部
材と、前記ラチエツト歯に係止して前記距離部材
の駆動後の逆移動を阻止する方向に常に付勢され
る係止爪と、前記駆動部材と開閉羽根機構との間
に介装され駆動部材が前記レンズ焦点機構を駆動
する方向に動くときは空回りし駆動部材がこの逆
方向に動くときは開閉羽根機構に駆動部材の駆動
力を伝達する一方向クラツチとを備え、カメラの
レンズ焦点作動が完了したら直ちに露出作動に移
行できるようにしたことを特徴とするカメラの自
動焦点・露出作動装置。 A driving member is driven by a motor whose rotation is controlled by a control circuit and can drive a lens focusing mechanism and an opening/closing blade mechanism in accordance with the rotational direction of the motor, and ratchet teeth are formed on the periphery and move together with the driving member to drive the lens focusing mechanism. A distance member to be driven, a locking pawl that is always biased in a direction that locks onto the ratchet teeth and prevents reverse movement of the distance member after being driven, and an intermediary between the drive member and the opening/closing blade mechanism. The camera is equipped with a one-way clutch that idles when the driving member moves in the direction of driving the lens focusing mechanism and transmits the driving force of the driving member to the opening/closing blade mechanism when the driving member moves in the opposite direction. An automatic focus/exposure operating device for a camera, characterized in that it can shift to exposure operation immediately after lens focus operation is completed.