JPH04300445A - Geneva mechanism - Google Patents
Geneva mechanismInfo
- Publication number
- JPH04300445A JPH04300445A JP3089758A JP8975891A JPH04300445A JP H04300445 A JPH04300445 A JP H04300445A JP 3089758 A JP3089758 A JP 3089758A JP 8975891 A JP8975891 A JP 8975891A JP H04300445 A JPH04300445 A JP H04300445A
- Authority
- JP
- Japan
- Prior art keywords
- driven
- driving
- rotational body
- tooth surface
- arc surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 19
- 210000000078 claw Anatomy 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000000284 resting effect Effects 0.000 claims 1
- 238000009751 slip forming Methods 0.000 claims 1
- 230000003068 static effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Transmission Devices (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、磁気ヘッド記録装置の
テープ引出し機構のために案出したゼネバ機構であるが
、駆動回転体が３６０゜以上回転する場合に於て、被駆
動回転体を必要角度だけ間欠回転させるための機構全般
に利用できる。[Field of Industrial Application] The present invention is a Geneva mechanism devised for a tape pull-out mechanism of a magnetic head recording device. It can be used for all mechanisms for intermittent rotation by the required angle.
【０００２】0002
【従来の技術及び課題】図８、図９は磁気記録再生装置
に於て、カセット（７）からテープ走行駆動用キャプス
タン（６６）にテープＴを引き出すためのテープ引出し
装置を示している。シャーシ（６）上に供給リール台（
６１）、巻取リール台（６２）、ヘッドシリンダ（６３
）及びキャプスタン（６６）が公知の如く配備され、カ
セット（７）のマウス（７１）に自由端を侵入させてテ
ープ引出しレバー（５）が回動可能に配備され、該テー
プ引出しレバー（５）に駆動レバー（６４）が連繋され
る。2. Description of the Related Art FIGS. 8 and 9 show a tape pull-out device for drawing out a tape T from a cassette (7) to a tape drive capstan (66) in a magnetic recording/reproducing apparatus. The supply reel stand (
61), take-up reel stand (62), head cylinder (63)
) and a capstan (66) are arranged in a known manner, and the tape pull-out lever (5) is rotatably arranged with its free end inserted into the mouth (71) of the cassette (7). ) is connected to a drive lever (64).
【０００３】駆動レバー（６４）が確動カム（６５）に
よって矢印Ａで示す時計方向に回転駆動されると、テー
プ引出しレバー（５）も自由端にテープを引っ掻けて時
計方向に回転し、テープをキャプスタン（６６）側に引
出す。When the drive lever (64) is rotated clockwise by the positive cam (65) as shown by arrow A, the tape pull-out lever (5) also catches the tape on its free end and rotates clockwise. , pull out the tape toward the capstan (66).
【０００４】この時、テープＴをキャプスタン（６６）
に押圧するためのピンチローラ（６７）は、ピンチロー
ラレバー（６８）に枢支され且つピンチローラ昇降駆動
用カム（３）によってテープの引出し移行路より上昇位
置に保持されており、テープの引出し終了後下降し、更
にキャプスタン（６６）側に移動してテープをキャプス
タン（６６）に押圧する。At this time, the tape T is attached to the capstan (66).
The pinch roller (67) for pressing the tape is pivotally supported by the pinch roller lever (68) and is held at a position higher than the tape drawer transition path by the pinch roller lifting/lowering driving cam (3). After finishing, it descends and further moves to the capstan (66) side to press the tape against the capstan (66).
【０００５】上記テープ引出し装置では、テープ引出し
レバー（５）を駆動するための駆動レバー（６４）及び
専用のカム（６５）必要となって構成が複雑となり、又
、カムの設計上スペース的に制約を受ける。[0005] The above-mentioned tape drawer requires a drive lever (64) and a dedicated cam (65) for driving the tape drawer lever (5), making the configuration complicated, and the design of the cam takes up space. subject to restrictions.
【０００６】出願人は、ピンチローラ昇降駆動用カム（
３）の回転を利用して、テープ引出しレバー（５）を回
転駆動することを試みたが、ピンチローラ昇降駆動用カ
ム（３）はピンチローラレバー（６８）を上昇及び回動
させるために３６０゜以上回転するため、カム（３）の
回転中に、所望のタイミングでテープ引出しレバー（５
）を回転させること、即ち、ピンチローラ昇降駆動用カ
ム（３）の回転に対し、テープ引出しレバー（５）を所
望のタイミングで間欠回転させることは出来なかった。
本発明は、上記問題を解決できるゼネバ機構を明らかに
するものである。[0006] The applicant has developed a pinch roller lifting/lowering drive cam (
An attempt was made to rotate the tape pull-out lever (5) by using the rotation of step 3), but the pinch roller lifting/lowering drive cam (3) had to be rotated by 360 degrees in order to lift and rotate the pinch roller lever (68). Since the tape pull-out lever (5) rotates more than
), that is, the tape pull-out lever (5) could not be rotated intermittently at a desired timing with respect to the rotation of the pinch roller lifting/lowering driving cam (3). The present invention reveals a Geneva mechanism that can solve the above problems.
【０００７】[0007]
【課題を解決する手段】本発明のゼネバ機構は、駆動回
転体（１）の外周面に駆動用歯面（１１）及び静止用円
弧面（１５）を形成し、被駆動回転体（２）の外周に駆
動用歯面（１１）に噛合する被駆動用歯面（２１）及び
該被駆動用歯面（２１）の両端に駆動回転体（１）の静
止用円弧面（１５）に摺接する２つの爪片（２５）（２
６）を形成し、駆動回転体（１）の歯面区間の途中まで
入り込み且つ静止用円弧面（１５）に連続して食込み静
止用円弧面（１６）（１７）を形成している。[Means for Solving the Problems] The Geneva mechanism of the present invention includes a drive tooth surface (11) and a stationary arc surface (15) formed on the outer circumferential surface of a drive rotor (1), and a driven rotor (2). A driven tooth surface (21) that meshes with the driving tooth surface (11) is provided on the outer periphery of the drive tooth surface (11), and a driven tooth surface (21) that slides on the stationary arc surface (15) of the drive rotating body (1) at both ends of the driven tooth surface (21). Two contacting claw pieces (25) (2
6), which penetrates halfway into the tooth flank section of the drive rotary body (1) and bites into the stationary circular arc surface (15) continuously to form stationary circular arc surfaces (16) and (17).
【０００８】[0008]
【作用及び効果】被駆動回転体（２）の下爪片（２５）
が、駆動回転体（１）の静止用円弧面（１５）に摺接し
ている間、被駆動回転体（２）は静止状態に保持される
。[Operation and Effect] Lower claw piece (25) of driven rotating body (2)
is in sliding contact with the static circular arc surface (15) of the driving rotary body (1), the driven rotary body (2) is held stationary.
【０００９】駆動用歯面（１１）が下爪片（２５）に近
づくと両回転体（１）（２）の歯面（１１）（２１）が
噛合し、被駆動回転体（２）が駆動回転体（１）とは逆
方向に回転する。When the driving tooth surface (11) approaches the lower claw piece (25), the tooth surfaces (11) and (21) of both rotating bodies (1) and (2) mesh with each other, and the driven rotating body (2) It rotates in the opposite direction to the driving rotor (1).
【００１０】歯面（１１）（２１）の噛み合いが終わる
と、被駆動回転体（２）の上爪片（２６）が駆動回転体
（１）の静止用円弧面（１５）に摺接し、再び被駆動回
転体（２）は静止する。
本発明では、駆動回転体（１）の歯面区間の途中ま
で入り込んで静止用円弧面（１６）（１７）が形成され
ているため、即ち、歯面の円弧角度と静止円弧面の角度
を合わせた角度を３６０゜以上とすることができる。こ
れによって駆動回転体（１）が３６０゜を越えて回転す
る場合でも、被駆動回転体（２）を間欠回転させること
ができる。When the tooth surfaces (11) and (21) have finished meshing, the upper claw piece (26) of the driven rotor (2) comes into sliding contact with the stationary arc surface (15) of the drive rotor (1), The driven rotating body (2) comes to rest again. In the present invention, since the static arc surfaces (16) and (17) are formed halfway into the tooth flank section of the driving rotor (1), that is, the arc angle of the tooth flank and the angle of the static arc surface are The combined angle can be 360° or more. As a result, even when the drive rotor (1) rotates over 360 degrees, the driven rotor (2) can be rotated intermittently.
【００１１】歯面（１１）（２１）の円弧角度によって
、被駆動回転体（２）の回転角度を任意に設定でき、又
、駆動回転体（１）の食込み静止用円弧面（１６）（１
７）の歯面区間に対する周方向に対する食込み長さによ
って、被駆動回転体（２）の間欠回転のタイミングを変
えることができる。The rotation angle of the driven rotor (2) can be arbitrarily set by the arc angle of the tooth surfaces (11) (21), and the arc surface (16) for stopping the drive rotor (1) can be set as desired. 1
The timing of the intermittent rotation of the driven rotating body (2) can be changed by the length of the bite in the circumferential direction of the tooth surface section (7).
【００１２】0012
【実施例】図１は、駆動回転体（１）と被駆動回転体（
２）の係合を外した状態のゼネバ機構の斜面図、図２は
両回転体（１）（２）の係合状態の平面図である。両回
転体（１）（２）は厚手の円板状に形成され、駆動回転
体（１）の外周面に駆動用歯面（１１）及び静止用円弧
面（１５）が同心に形成される。静止用円弧面（１５）
の曲率半径は、駆動用歯面（１１）の歯底を結ぶ仮想円
の半径に略等しい。[Example] Figure 1 shows a driving rotating body (1) and a driven rotating body (1).
2) is a perspective view of the Geneva mechanism in a disengaged state, and FIG. 2 is a plan view of both rotating bodies (1) and (2) in an engaged state. Both rotating bodies (1) and (2) are formed into thick disk shapes, and a driving tooth surface (11) and a stationary arc surface (15) are formed concentrically on the outer peripheral surface of the driving rotating body (1). . Stationary arc surface (15)
The radius of curvature of is approximately equal to the radius of the virtual circle connecting the bottoms of the drive tooth surface (11).
【００１３】駆動用歯面（１１）は歯先が駆動回転体（
１）の全幅に形成された全幅歯部（１３）、全幅歯部（
１３）から時計方向の下段に形成された下段歯部（１２
）及び全幅歯部（１３）から反時計方向の上段に形成さ
れた上段歯部（１４）からなる。The driving tooth surface (11) has a tooth tip that is connected to the driving rotating body (
1), the full-width tooth portion (13), the full-width tooth portion (
The lower tooth part (12) formed in the lower stage clockwise from 13)
) and an upper tooth portion (14) formed above the full-width tooth portion (13) in the counterclockwise direction.
【００１４】上段歯部（１４）の下部及び下段歯部（１
２）の上方は静止用円弧面（１５）に連続し該静止用円
弧面（１５）と同曲率で歯面区間に食い込む食込み静止
用円弧面（１６）（１７）となっている。[0014] The lower part of the upper tooth part (14) and the lower tooth part (1
The upper part of 2) is a stationary circular arc surface (16) (17) that continues to the static circular arc surface (15) and bites into the tooth flank section with the same curvature as the stationary circular arc surface (15).
【００１５】下段歯部（１２）の時計方向及び上段歯部
（１４）の反時計方向に隣接して、下段逃し部（１８）
及び上段逃し部（１９）が凹設されている。A lower relief portion (18) is adjacent to the lower tooth portion (12) in the clockwise direction and adjacent to the upper tooth portion (14) in the counterclockwise direction.
And an upper relief part (19) is recessed.
【００１６】上記逃し部（１８）（１９）は、後記する
被駆動回転体（２）が回転する際、爪片（２５）（２６
）の侵入を許容して爪片（２５）（２６）と駆動回転体
（１）との干渉を避けるためのものである。The relief portions (18) and (19) are provided with claw pieces (25) and (26) when the driven rotary body (2) (to be described later) rotates.
) to avoid interference between the claw pieces (25, 26) and the drive rotary body (1).
【００１７】被駆動回転体（２）の外周に、前記駆動回
転体（１）の駆動用歯面（１１）と対象的に下段歯部（
２２）、全幅歯部（２３）及び上段歯部（２４）とから
なる被駆動用歯面（２１）が形成されている。On the outer periphery of the driven rotating body (2), a lower tooth portion (
22), a driven tooth surface (21) consisting of a full-width tooth portion (23) and an upper tooth portion (24) is formed.
【００１８】下段歯部（２２）の反時計方向の終端に隣
接して下段爪片（２５）が、上段歯部（２４）の時計方
向の終端に隣接して上爪片（２６）が突設され、各爪片
（２５）（２６）の先端面は静止用円弧面（１５）に摺
接せる凹み円弧面（２５ａ）（２６ａ）に形成されてい
る。A lower claw piece (25) protrudes adjacent to the counterclockwise end of the lower tooth portion (22), and an upper claw piece (26) protrudes adjacent to the clockwise end of the upper tooth portion (24). The distal end surfaces of each of the claw pieces (25, 26) are formed into concave arcuate surfaces (25a, 26a) that can be slid into sliding contact with the stationary arcuate surface (15).
【００１９】然して、駆動回転体（１）が時計方向に回
転するとき、被駆動回転体（２）の下爪片（２５）が駆
動回転体（１）の静止用円弧面（１５）（１７）に摺接
している間、駆動回転体（１）の回転は被駆動回転体（
２）には伝わらず、被駆動回転体（２）は静止状態を保
持する。駆動回転体（１）の下段歯部（１２）が被駆動
回転体（２）の下段歯部（２２）に噛合し、両回転体（
１）（２）の上段歯部（１４）（２４）が噛み合いを終
えるまで、駆動回転体（１）の回転に追従して被駆動回
転体（２）が回転する。When the drive rotor (1) rotates clockwise, the lower claw piece (25) of the driven rotor (2) touches the stationary arc surface (15) (17) of the drive rotor (1). ), the rotation of the driving rotor (1) is caused by the rotation of the driven rotor (
2), and the driven rotating body (2) maintains a stationary state. The lower teeth (12) of the driving rotor (1) mesh with the lower teeth (22) of the driven rotor (2), and both rotors (
1) The driven rotor (2) rotates following the rotation of the drive rotor (1) until the upper tooth portions (14) and (24) of (2) finish meshing.
【００２０】被駆動回転体（２）の爪片（２６）が駆動
回転体（１）の静止用円弧面（１５）を摺接する際、再
び被駆動回転体（２）は静止状態に保持される。When the claw piece (26) of the driven rotating body (2) comes into sliding contact with the stationary arc surface (15) of the driving rotating body (1), the driven rotating body (2) is held stationary again. Ru.
【００２１】上記被駆動回転体（２）の回転角と角速度
の関係を図３のグラフに表す。Ｘにて示す区間は駆動回
転体（１）の静止用円弧面（１５）と被駆動回転体（２
）の下爪片（２５）が摺接している区間、Ｙにて示す区
間は駆動用歯面（１１）と被駆動用歯面（２１）が噛合
している区間、Ｚにて示す区間は静止用円弧面（１５）
と上爪片（２６）が摺接している区間である。The relationship between the rotation angle and the angular velocity of the driven rotating body (2) is shown in the graph of FIG. The section indicated by
) The section where the lower claw piece (25) is in sliding contact, the section indicated by Y is the section where the driving tooth surface (11) and the driven tooth surface (21) are engaged, and the section indicated by Z is the section where the driving tooth surface (11) and the driven tooth surface (21) are in mesh. Stationary arc surface (15)
This is the section where the upper claw piece (26) is in sliding contact.
【００２２】本発明では、駆動回転体（１）の歯面区間
の途中まで入り込んで静止用円弧面（１６）（１７）が
形成されているため、即ち、歯面の噛合区間角度と静止
円弧面の角度を合わせた角度を３６０゜以上とすること
ができる。
これによって回転体（１）が３６０゜を越えて回転する
場合でも、被駆動回転体（２）を間欠回転させることが
実現できる。In the present invention, since the static arc surfaces (16, 17) are formed halfway into the tooth flank section of the drive rotor (1), that is, the meshing section angle of the tooth flank and the static arc The combined angle of the surfaces can be 360° or more. As a result, even when the rotating body (1) rotates over 360 degrees, the driven rotating body (2) can be rotated intermittently.
【００２３】歯面（１１）（２１）の区間角度によって
、被駆動回転体（２）の回転角度を任意に設定でき、又
、駆動回転体（１）の食込み静止用円弧面（１６）（１
７）の歯面区間に対する周方向に対する食込み長さによ
って、被駆動回転体（２）の間欠回転のタイミングを変
えることができる。The rotation angle of the driven rotating body (2) can be arbitrarily set by the section angle of the tooth surfaces (11) (21), and the circular arc surface (16) for stopping the drive rotating body (1) 1
The timing of the intermittent rotation of the driven rotating body (2) can be changed by the length of the bite in the circumferential direction of the tooth surface section (7).
【００２４】図４は、上記ゼネバ機構を応用した磁気記
録再生装置のテープ引出し装置を示しており、前記駆動
回転体（１）と同心に、該駆動回転体（１）の上方にピ
ンチローラ昇降駆動用カム（３）、下方に動力伝達ギヤ
（４）を設け、被駆動回転体（２）にテープ引出しレバ
ー（５）を突設している。FIG. 4 shows a tape pull-out device of a magnetic recording and reproducing apparatus to which the Geneva mechanism is applied, in which a pinch roller is raised and lowered concentrically with the drive rotor (1) and above the drive rotor (1). A driving cam (3), a power transmission gear (4) provided below, and a tape pull-out lever (5) protruding from the driven rotating body (2).
【００２５】ピンチローラ昇降駆動用カム（３）を３６
０゜以上回転させる場合でも、テープ引出しレバー（５
）を所望のタイミングで間欠回転駆動できる。従来のテ
ープ引出し装置の様に、テープ引出しレバー（５）を駆
動するための専用カムは不要となる。[0025] The pinch roller lifting/lowering driving cam (3) is
Even when rotating the tape by more than 0°, the tape drawer lever (5
) can be driven to rotate intermittently at desired timing. Unlike conventional tape drawer devices, a dedicated cam for driving the tape drawer lever (5) is not required.
【００２６】図５は、駆動回転体（１）の駆動用歯面（
１１）が、時計方向に基準ピッチ曲率が小さくなる非円
形に形成され、被駆動回転体（２）は被駆動用歯面（２
１）は駆動用歯面（１１）に対応して、時計方向に基準
ピッチ曲率が非円形に形成されている。上記非円形ピッ
チ曲率の歯面の噛合の場合、図６のＹ区間に示す如く、
被駆動回転体（２）の回転速度を不等速にできる。FIG. 5 shows the driving tooth surface (
11) is formed into a non-circular shape whose reference pitch curvature decreases in the clockwise direction, and the driven rotating body (2) is formed with a driven tooth surface (2).
1) has a non-circular reference pitch curvature in the clockwise direction corresponding to the drive tooth surface (11). In the case of tooth flank meshing with the above-mentioned non-circular pitch curvature, as shown in the Y section of Fig. 6,
The rotational speed of the driven rotating body (2) can be made non-uniform.
【００２７】図７は、駆動回転体（１）の駆動用歯面（
１１）を高さ方向に斜めに配置し、該歯列の下降側歯部
の上方及び上昇側歯部の下方に、被駆動回転体（２）の
爪片（２５）（２６）が摺接する上段食込み静止用円弧
面（１６）及び下段食込み静止用円弧面（１７）を形成
した他の実施例を示している。この場合も、図１と同様
の効果を奏することができる。FIG. 7 shows the driving tooth surface (
11) are arranged obliquely in the height direction, and the claw pieces (25) and (26) of the driven rotating body (2) are in sliding contact with the upper part of the descending tooth part and the lower part of the ascending part of the tooth row. Another embodiment is shown in which an upper stage biting stationary circular arc surface (16) and a lower stage biting stationary circular arc surface (17) are formed. In this case as well, the same effects as in FIG. 1 can be achieved.
【００２８】本発明は、上記実施例の構成に限定される
ことはなく、特許請求の範囲に記載の範囲で種々の変形
が可能である。The present invention is not limited to the configuration of the above-described embodiment, and various modifications can be made within the scope of the claims.
【００２９】[0029]
【図１】ゼネバ機構の駆動回転体と被駆動回転体を離し
た状態の斜面図である。FIG. 1 is a perspective view of a Geneva mechanism in a state where a driving rotary body and a driven rotary body are separated from each other.
【図２】ゼネバ機構の平面図である。FIG. 2 is a plan view of the Geneva mechanism.
【図３】ゼネバ機構の回転角と角速度の関係を示すグラ
フである。FIG. 3 is a graph showing the relationship between rotation angle and angular velocity of the Geneva mechanism.
【図４】テープ引出し装置の斜面図である。FIG. 4 is a perspective view of the tape drawing device.
【図５】非円形ピッチの歯面を有すゼネバ機構の他の実
施例の斜面図である。FIG. 5 is a perspective view of another embodiment of a Geneva mechanism having tooth flanks with a non-circular pitch;
【図６】図５のゼネバ機構の回転角と角速度の関係を示
すグラフである。6 is a graph showing the relationship between rotation angle and angular velocity of the Geneva mechanism of FIG. 5. FIG.
【図７】ゼネバ機構の他の実施例の斜面図である。FIG. 7 is a perspective view of another embodiment of the Geneva mechanism.
【図８】磁気記録再生装置に於けるテープ引出し装置の
平面図である。FIG. 8 is a plan view of a tape drawer in the magnetic recording/reproducing device.
【図９】同上のテープ引出し状態の平面図である。FIG. 9 is a plan view of the tape drawn out state.
（１） 駆動回転体 （１１） 駆動用歯面 （１５） 静止用円弧面 （１６） 上段食込み静止用円弧面 （１７） 下段食込み静止用円弧面 （２） 被駆動回転体 （２１） 被駆動用歯面 （２５） 下爪片 （２６） 上爪片 (1) Driving rotating body (11) Driving tooth surface (15) Stationary arc surface (16) Upper stage biting stationary arc surface (17) Lower stage biting stationary arc surface (2) Driven rotating body (21) Driven tooth surface (25) Lower claw piece (26) Upper claw piece
Claims (3)
体（２）が間欠回転するゼネバ機構に於て、駆動回転体
（１）の外周面に駆動用歯面（１１）及び静止用円弧面
（１５）を形成し、被駆動回転体（２）の外周に駆動用
歯面（１１）に噛合する被駆動用歯面（２１）及び該被
駆動用歯面（２１）の両端に駆動回転体（１）の静止用
円弧面（１５）に摺接する爪片（２５）（２６）を形成
し、駆動回転体（１）の歯面区間の途中まで入り込み且
つ静止用円弧面（１５）に連続して食込み静止用円弧面
（１６）（１７）を形成していることを特徴とするゼネ
バ機構。Claim 1: In a Geneva mechanism in which a driven rotating body (2) intermittently rotates with respect to a driving rotating body (1), a driving tooth surface (11) and a stationary tooth surface are provided on the outer peripheral surface of the driving rotating body (1). A driven tooth surface (21) that forms an arcuate surface (15) and meshes with the driving tooth surface (11) on the outer periphery of the driven rotating body (2), and both ends of the driven tooth surface (21). Claw pieces (25) and (26) are formed in sliding contact with the stationary arc surface (15) of the drive rotor (1), and extend halfway into the tooth surface section of the drive rotor (1) and contact the stationary arc surface (15). 15) A Geneva mechanism characterized in that arcuate surfaces (16) and (17) for biting and resting are continuously formed.
（２１）を非円形として不等速回転せしめる請求項１に
記載のゼネバ機構。2. The Geneva mechanism according to claim 1, wherein the driving tooth surface (11) and the driven tooth surface (21) are non-circular and rotate at an inconstant speed.
面（１１）及び静止用円弧面（１５）を形成し、被駆動
回転体（２）の外周に駆動用歯面（１１）に噛合する被
駆動用歯面（２１）及び被駆動用歯面（２１）の両端に
駆動回転体（１）の静止用円弧面（１５）に摺接する２
つの爪片（２５）（２６）を形成し、駆動回転体（１）
の歯面区間の途中まで入り込み且つ静止用円弧面（１５
）に連続して食込み静止用円弧面（１６）（１７）を形
成してなるゼネバ機構の前記駆動回転体（１）と同心に
動力伝達ギヤ（４）及びピンチローラ昇降駆動用カム（
３）を駆動回転体（１）と一体回転可能に設け、被駆動
回転体（２）にテープ引出しレバー（５）を突設した磁
気記録再生装置のテープ引出し装置。3. A drive tooth surface (11) and a stationary arc surface (15) are formed on the outer circumference of the driving rotor (1), and a drive tooth surface (11) is formed on the outer circumference of the driven rotor (2). ) and 2 which are in sliding contact with the stationary arc surface (15) of the driving rotor (1) at both ends of the driven tooth surface (21) and the driven tooth surface (21) that meshes with the
Forming two claw pieces (25) (26), driving rotary body (1)
It enters the middle of the tooth surface section and has a stationary arc surface (15
) and a power transmission gear (4) and a pinch roller lifting/lowering driving cam (
3) is provided to be rotatable integrally with a driving rotary body (1), and a tape pull-out lever (5) is provided protruding from a driven rotary body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3089758A JP2858988B2 (en) | 1991-03-27 | 1991-03-27 | Geneva mechanism and tape pull-out device for magnetic recording / reproducing apparatus using the Geneva mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3089758A JP2858988B2 (en) | 1991-03-27 | 1991-03-27 | Geneva mechanism and tape pull-out device for magnetic recording / reproducing apparatus using the Geneva mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04300445A true JPH04300445A (en) | 1992-10-23 |
| JP2858988B2 JP2858988B2 (en) | 1999-02-17 |
Family
ID=13979621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3089758A Expired - Fee Related JP2858988B2 (en) | 1991-03-27 | 1991-03-27 | Geneva mechanism and tape pull-out device for magnetic recording / reproducing apparatus using the Geneva mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2858988B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999006741A1 (en) * | 1997-08-01 | 1999-02-11 | Hiromitsu Yamada | Intermittent transmission mechanism |
| US5971640A (en) * | 1997-08-28 | 1999-10-26 | International Business Machines Corporation | Method for cutting paper in a printer using a gear with a friction pad |
| JP2011052870A (en) * | 2009-08-31 | 2011-03-17 | Hitachi Appliances Inc | Damper device and refrigerator including the damper device |
| EP2216215A3 (en) * | 2009-02-06 | 2011-12-28 | Huf Hülsbeck & Fürst GmbH & Co. KG | Gear unit with a lag function |
| JP2016048312A (en) * | 2014-08-27 | 2016-04-07 | 京セラドキュメントソリューションズ株式会社 | Image forming apparatus |
| US20170248211A1 (en) * | 2016-02-26 | 2017-08-31 | Canon Kabushiki Kaisha | Drive transmission device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5314025A (en) * | 1976-07-23 | 1978-02-08 | Suwa Seikosha Kk | Device for intermittently driving compact printer |
-
1991
- 1991-03-27 JP JP3089758A patent/JP2858988B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5314025A (en) * | 1976-07-23 | 1978-02-08 | Suwa Seikosha Kk | Device for intermittently driving compact printer |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999006741A1 (en) * | 1997-08-01 | 1999-02-11 | Hiromitsu Yamada | Intermittent transmission mechanism |
| US6234047B1 (en) | 1997-08-01 | 2001-05-22 | Hiromitsu Yamada | Intermittent transmission mechanism |
| US5971640A (en) * | 1997-08-28 | 1999-10-26 | International Business Machines Corporation | Method for cutting paper in a printer using a gear with a friction pad |
| EP2216215A3 (en) * | 2009-02-06 | 2011-12-28 | Huf Hülsbeck & Fürst GmbH & Co. KG | Gear unit with a lag function |
| US8561495B2 (en) | 2009-02-06 | 2013-10-22 | Huf Hulsbeck & Furst Gmbh & Co., Kg | Gear unit with a lag function |
| JP2011052870A (en) * | 2009-08-31 | 2011-03-17 | Hitachi Appliances Inc | Damper device and refrigerator including the damper device |
| JP2016048312A (en) * | 2014-08-27 | 2016-04-07 | 京セラドキュメントソリューションズ株式会社 | Image forming apparatus |
| US20170248211A1 (en) * | 2016-02-26 | 2017-08-31 | Canon Kabushiki Kaisha | Drive transmission device |
| US10920863B2 (en) * | 2016-02-26 | 2021-02-16 | Canon Kabushiki Kaisha | Drive transmission device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2858988B2 (en) | 1999-02-17 |
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