JP2588918Y2 - Rotation transmission device - Google Patents
Rotation transmission deviceInfo
- Publication number
- JP2588918Y2 JP2588918Y2 JP1991070561U JP7056191U JP2588918Y2 JP 2588918 Y2 JP2588918 Y2 JP 2588918Y2 JP 1991070561 U JP1991070561 U JP 1991070561U JP 7056191 U JP7056191 U JP 7056191U JP 2588918 Y2 JP2588918 Y2 JP 2588918Y2
- Authority
- JP
- Japan
- Prior art keywords
- gear
- intermediate gear
- drive gear
- rotation
- lever
- 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.)
- Expired - Fee Related
Links
Landscapes
- Gear Transmission (AREA)
- Transmission Devices (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案はオートリバース式テープ
レコーダ等に適用されるものであって、駆動ギヤと作動
ギヤとの間に選択的に介装される中間ギヤが、前記駆動
ギヤと作動ギヤとに確実に噛合して、前記駆動ギヤの回
転力が前記中間ギヤを介して前記作動ギヤに確実に伝達
される回転伝達装置に関する。BACKGROUND OF THE INVENTION The present invention is applied to an auto-reverse type tape recorder or the like, and an intermediate gear selectively interposed between a driving gear and an operating gear is provided with the driving gear and the operating gear. The present invention relates to a rotation transmitting device that surely meshes with a gear so that the rotational force of the drive gear is reliably transmitted to the operating gear via the intermediate gear.
【０００２】[0002]
【従来の技術】従来、オートリバース式テープレコーダ
に適用される回転伝達装置として図７に示すものが公知
である。この装置は、左右のキャプスタンギヤ（駆動ギ
ヤ）１ａ，１ｂと、左右のリールギヤ（作動ギヤ）２
ａ，２ｂと、これらのリールギヤ２ａ，２ｂ相互間に位
置して基端側が軸３により回動自在に支持された回動レ
バー４と、この回動レバー４の先端側（回動端側）に回
転自在に軸支された中間ギヤ５とを有する。2. Description of the Related Art Conventionally, there is known a rotation transmitting device shown in FIG. 7 applied to an automatic reverse type tape recorder. This device includes left and right capstan gears (drive gears) 1a and 1b, and left and right reel gears (operation gears) 2a.
a, 2b, a rotary lever 4 located between the reel gears 2a, 2b and having a base end rotatably supported by a shaft 3, and a distal end side (a rotary end side) of the rotary lever 4. And an intermediate gear 5 that is rotatably supported by the motor.
【０００３】そして、図中、実線で示す如く回動レバー
４が左側に回動して、中間ギヤ５が左方のキャプスタン
ギヤ１ａと左方のリールギヤ２ａとに噛合した状態で
は、図示しないモータにより回転駆動される左方のキャ
プスタンギヤ１ａの回転力が中間ギヤ５を介して左方の
リールギヤ２ａに伝達される。[0003] In the state where the rotating lever 4 is rotated to the left as shown by the solid line in the figure, and the intermediate gear 5 meshes with the left capstan gear 1a and the left reel gear 2a, it is not shown. The rotational force of the left capstan gear 1a driven to rotate by the motor is transmitted to the left reel gear 2a via the intermediate gear 5.
【０００４】また、図中、２点鎖線で示す如く回動レバ
ー４が右側に回動して、中間ギヤ５が右方のキャプスタ
ンギヤ１ｂと右方のリールギヤ２ｂとに噛合した状態で
は、前記モータにより回転駆動される右方のキャプスタ
ンギヤ１ｂの回転力が中間ギヤ５を介して右方のリール
ギヤ２ｂに伝達される。In the state where the rotating lever 4 is rotated to the right as shown by a two-dot chain line in the figure, and the intermediate gear 5 meshes with the right capstan gear 1b and the right reel gear 2b, The rotational force of the right capstan gear 1b, which is rotationally driven by the motor, is transmitted to the right reel gear 2b via the intermediate gear 5.
【０００５】ところで、左方のキャプスタンギヤ１ａは
図中、反時計回り方向に、且つ右方のキャプスタンギヤ
１ｂは図中、時計回り方向にそれぞれ回転駆動される。The left capstan gear 1a is driven to rotate counterclockwise in the drawing, and the right capstan gear 1b is driven to rotate clockwise in the drawing.
【０００６】しかして、中間ギヤ５は、左方のキャプス
タンギヤ１ａとリールギヤ２ａに対して図中、右側から
噛合し、また、右方のキャプスタンギヤ１ｂとリールギ
ヤ２ｂに対して図中、左側から噛合する。このような向
きからのキャプスタンギヤ１ａ，１ｂに対する中間ギヤ
５の噛合は、その噛合部位においてキャプスタンギヤ１
ａ，１ｂの回転の向きと逆である（逃げの向きであ
る。）。この為、キャプスタンギヤ１ａ，１ｂの回転に
より中間ギヤ５を外側（噛合が外れる向き）に押し出そ
うとする力が作用し、その噛合状態が浅くなる。これに
起因して、例えば、回転伝達効率が悪くなったり、噛合
のガタツキによる騒音が発生し易くなる等の不具合があ
る。Thus, the intermediate gear 5 meshes with the left capstan gear 1a and the reel gear 2a from the right side in the drawing, and also interlocks with the right capstan gear 1b and the reel gear 2b in the drawing. Mesh from left side. The meshing of the intermediate gear 5 with the capstan gears 1a, 1b from such an orientation causes the capstan gear 1a at the meshing portion.
a, 1b is opposite to the direction of rotation (the direction of escape). Therefore, the rotation of the capstan gears 1a and 1b exerts a force to push the intermediate gear 5 outward (in a direction in which the meshing is released), and the meshing state becomes shallow. As a result, for example, there are disadvantages such as a decrease in rotation transmission efficiency and an increase in noise due to rattling of the mesh.
【０００７】このような不具合を解消するべく、上述し
たギヤ間の噛合が深くなる向きに、ばねを用いて回動レ
バー４を付勢することが考えられている。しかし、この
為には大きなバネ力を必要とすると云う問題が生じる。In order to solve such a problem, it has been considered to urge the rotating lever 4 by using a spring in a direction in which the meshing between the gears is deepened. However, this causes a problem that a large spring force is required.
【０００８】尚、左方のキャプスタンギヤ１ａとリール
ギヤ２ａに対して図中、左側から中間ギヤを噛合させ、
また、右方のキャプスタンギヤ１ｂとリールギヤ２ｂに
対して図中、右側から中間ギヤを噛合させることで、上
述した不具合を回避することも考えられる。しかし、２
枚の中間ギヤを必要とし、これらを連係させて位置制御
する必要があり、その構成が徒に複雑化すると云う別の
問題がある。An intermediate gear meshes with the left capstan gear 1a and the reel gear 2a from the left side in the figure.
It is also conceivable to avoid the above-mentioned problem by meshing the intermediate gear with the right capstan gear 1b and the reel gear 2b from the right side in the drawing. However, 2
Another problem is that it requires a plurality of intermediate gears, which must be coordinated to control the position, which complicates the configuration.
【０００９】このような問題は、左右のキャプスタンギ
ヤ１ａ，１ｂとリールギヤ２ａ，２ｂとの間に中間ギヤ
５を選択的に噛合させる構成の回転伝達装置のみなら
ず、一般的に駆動ギヤと作動ギヤとの間に、駆動ギアの
回転の向きと逆側から中間ギアを噛合させる場合にも同
様に生じる。Such a problem is caused not only by the rotation transmitting device having a structure in which the intermediate gear 5 is selectively meshed between the left and right capstan gears 1a, 1b and the reel gears 2a, 2b, but also generally by the driving gear. This also occurs when the intermediate gear meshes with the operation gear from the side opposite to the direction of rotation of the drive gear.
【００１０】[0010]
【考案が解決しようとする課題】このように駆動ギヤの
回転により、噛合から外れようとする向きから中間ギア
を噛合させるような従来の回転伝達装置にあっては、大
きなバネ力を作用させて中間ギアを駆動ギヤ側に押し付
ける等の工夫が必要であった。しかも、このようにする
と中間ギアを支持した回動レバーの操作力が増大する等
の不具合があった。As described above, in a conventional rotation transmission device in which the intermediate gear is engaged from the direction in which the intermediate gear is disengaged by the rotation of the drive gear, a large spring force is applied. It was necessary to take measures such as pressing the intermediate gear against the drive gear. In addition, there is a problem that the operation force of the rotating lever supporting the intermediate gear is increased.
【００１１】このような問題は、左右のキャプスタンギ
ヤ１ａ，１ｂとリールギヤ２ａ，２ｂとの間に中間ギヤ
５を選択的に噛合させる構成の回転伝達装置のみなら
ず、一般的に駆動ギヤと作動ギヤとの間に、駆動ギアの
回転の向きと逆側から中間ギアを噛合させる場合にも同
様に生じる。Such a problem is caused not only by a rotation transmission device having a structure in which the intermediate gear 5 is selectively meshed between the left and right capstan gears 1a, 1b and the reel gears 2a, 2b, but also generally by a drive gear. This also occurs when the intermediate gear meshes with the operation gear from the side opposite to the direction of rotation of the drive gear.
【００１２】本考案は上記事情に鑑みてなされたもの
で、ばね力の大きいばねを用いることなく、中間ギヤと
作動ギヤとの噛合状態が浅くなるのを確実に防止し、し
かも、回動レバーを回動するための力も小さくて済む回
転伝達装置を提供することを目的としている。The present invention has been made in view of the above circumstances, and reliably prevents the state of engagement between an intermediate gear and an operating gear from becoming shallow without using a spring having a large spring force. It is an object of the present invention to provide a rotation transmitting device that requires only a small force for rotating the shaft.
【００１３】[0013]
【課題を解決するための手段】斯かる目的を達成するた
め本考案の回転伝達装置は、駆動ギヤと作動ギヤとの間
にこれら両ギヤと接離自在に介装されて前記駆動ギヤの
回転力を前記作動ギヤに伝達する中間ギヤと、この中間
ギヤを回動端側に支持し且つ該中間ギヤを前記駆動ギヤ
の回転により押し出されようとする向き側から前記駆動
ギヤに噛合させる回動レバーと、この回動レバーに回動
中心に向かう分力と前記中間ギヤを前記駆動ギヤに噛合
させる向きへの分力とを作用させるバネと、前記中間ギ
ヤが前記駆動ギヤと噛合する位置での前記中間ギヤの中
心と前記回動レバーの回動軸とを結ぶ線と交差する方向
に前記回動レバーの回動軸を移動自在に支持する軸受手
段と、前記回動レバーに設けられた係合部を摺動自在に
係合して前記中間ギヤの移動軌跡を設定するガイド部と
を具備し、特に前記ガイド部に、前記中間ギヤが前記駆
動ギヤに噛合する状態における前記係合部と接触する接
線の方向が当該位置での前記回動レバーの回動軸を中心
とする円の接線方向に対して傾きをなし且つ前記係合部
を前記バネの弾性力にて前記中間ギヤが前記駆動ギヤに
噛合する方向に押圧する向きの分力を生起する傾斜部を
設けたことを特徴とするものである。In order to achieve the above object, a rotation transmission device according to the present invention is provided between a drive gear and an operation gear so as to freely contact and separate these two gears, and rotates the drive gear. An intermediate gear for transmitting a force to the operation gear, and a rotation for supporting the intermediate gear on a rotation end side and meshing the intermediate gear with the drive gear from a direction in which the intermediate gear is about to be pushed out by the rotation of the drive gear. A lever, a spring for applying a component force toward the rotation center to the rotation lever and a component force in a direction for meshing the intermediate gear with the drive gear, and at a position where the intermediate gear meshes with the drive gear. Bearing means for movably supporting the rotation axis of the rotation lever in a direction intersecting a line connecting the center of the intermediate gear and the rotation axis of the rotation lever; The engaging portion is slidably engaged with the intermediate portion. And a guide part for setting a movement locus of the gear, and in particular, in the guide part, a direction of a tangent line contacting the engagement part in a state where the intermediate gear meshes with the drive gear is the rotation at the position. A component force that is inclined with respect to the tangential direction of a circle about the rotation axis of the lever and presses the engagement portion in a direction in which the intermediate gear meshes with the drive gear by the elastic force of the spring. Characterized in that an inclined portion which causes the above is provided.
【００１４】[0014]
【作用】ガイド部の傾斜部により生起される分力によ
り、回動レバーを、中間ギヤが駆動ギヤと噛合する方向
に付勢して、中間ギヤと駆動ギヤとの噛合状態が浅くな
るのを抑制する。The rotation lever is urged in the direction in which the intermediate gear meshes with the drive gear by the component force generated by the inclined portion of the guide portion, so that the meshing state between the intermediate gear and the drive gear becomes shallower. Suppress.
【００１５】[0015]
【実施例】以下、本考案の実施例を図１乃至図６に基づ
き説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
【００１６】図１は、オートリバース式テープレコーダ
に適用した第１実施例に係る回転伝達装置を基板の底面
側より見た図、図２は回動レバーの回動状態の底面図で
ある。両図中、１０はテープレコーダの基板で、その下
面には互いに回転方向が異なる第１，第２駆動ギヤ（キ
ャプスタンギヤ）１１ａ，１１ｂ、及びこれら第１，第
２駆動ギヤ１１ａ，１１ｂとそれぞれ対をなす第１，第
２作動ギヤ（リールギヤ）１２ａ，１２ｂが回転自在に
軸支されている。これら第１，第２駆動ギヤ１１ａ，１
１ｂは図示しないモータにより矢印方向に回転駆動され
る。FIG. 1 is a view of a rotation transmitting device according to a first embodiment applied to an auto-reverse type tape recorder as viewed from the bottom side of a substrate, and FIG. 2 is a bottom view of a rotation state of a rotation lever. In both figures, reference numeral 10 denotes a substrate of the tape recorder, on its lower surface, first and second drive gears (capstan gears) 11a and 11b having different rotation directions, and these first and second drive gears 11a and 11b. A pair of first and second operation gears (reel gears) 12a and 12b are rotatably supported on a pair. These first and second drive gears 11a, 1
1b is driven to rotate in the direction of the arrow by a motor (not shown).
【００１７】基板１０の第１，第２駆動ギヤ１１ａ，１
１ｂと第１，第２作動ギヤ１２ａ，１２ｂとにより囲ま
れる中央部位には、円形の孔１３と、略扇形の開口部１
４と、円弧状の係合孔１５と、円弧状のガイド孔（ガイ
ド部）１６とが設けられている。基板１０の孔１３と開
口部１４との間に位置する部分１７は、段部１７ａ，１
７ｂを介して基板１０の上面より１段低くなっている。
この低い部分１７には一端が開放する軸受用長孔（軸受
手段）１８が図中、上下方向に沿って設けられている。The first and second drive gears 11a, 1 of the substrate 10
1b and a central portion surrounded by the first and second operating gears 12a and 12b, a circular hole 13 and a substantially fan-shaped opening 1 are provided.
4, an arcuate engagement hole 15 and an arcuate guide hole (guide portion) 16 are provided. The portion 17 of the substrate 10 located between the hole 13 and the opening 14 is a step 17a, 1
It is one step lower than the upper surface of the substrate 10 via 7b.
The lower portion 17 is provided with a bearing long hole (bearing means) 18 having one end open along the vertical direction in the figure.
【００１８】基板１０の下面の、前記中央部位には、回
動レバー１９が左右方向（図２中、矢印Ａ，Ｂ方向）に
回動自在に装着されている。この回動レバー１９は基端
部と略中間部に第１，第２係合片２０，２１を有してい
る。これら第１，第２係合片２０，２１の下面は、段部
２０ａ，２１ａを介して回動レバー１９の上面より１段
高くなっている（図３，図４参照：図３，図４は下側を
上面として表わしてある。）。基端部側に位置する第１
係合片２０の下面略中央部には回動軸２２が突設されて
いる。また、回動レバー１９の先端側（回動端側）下面
には、中間ギヤ２３が回転自在に軸支されている。更
に、回動レバー１９の先端側上面には、ガイドローラ２
４が中間ギヤ２３と同軸に回転自在に軸支されている。A rotation lever 19 is mounted on the lower surface of the substrate 10 at the central portion so as to be rotatable in the left-right direction (the directions of arrows A and B in FIG. 2). The rotating lever 19 has first and second engaging pieces 20 and 21 at a base end and a substantially middle part. The lower surfaces of the first and second engagement pieces 20 and 21 are one step higher than the upper surface of the rotary lever 19 via the step portions 20a and 21a (see FIGS. 3 and 4: FIGS. 3 and 4). Indicates the lower side as the upper surface.) The first located on the base end side
A rotation shaft 22 protrudes from a substantially central portion of the lower surface of the engagement piece 20. An intermediate gear 23 is rotatably supported on the lower surface of the distal end side (rotating end side) of the rotating lever 19. Further, the guide roller 2 is provided on the upper surface on the tip side of the rotation lever 19.
4 is rotatably supported coaxially with the intermediate gear 23.
【００１９】そして、回動レバー１９は、図１に示す如
く中立位置においてのみ、基板１０に対して着脱可能に
設けられている。即ち、回動レバー１９は、回動軸２２
が軸受用長孔１８内に回動自在に係合され、且つ、第１
係合片２０の下面が低い部分１７の上面に摺動自在に重
合され、第２係合片２１の下面が係合孔１５内を介して
基板１０の上面に摺動自在に重合され、更に、ガイドロ
ーラ２４がガイド孔１６の内周縁部１６ａに沿って移動
自在に係合された状態で、基板１０の下面に回動軸２２
を中心に回動自在に装着されている。この回動レバー１
９は、中間ギヤ２３を第１駆動ギヤ１１ａ、または、第
２駆動ギヤ１１ｂの回転により押し出されようとする向
き側から第１駆動ギヤ１１ａ、または第２駆動ギヤ１１
ｂに噛合させるものである。The pivot lever 19 is detachably attached to the substrate 10 only at the neutral position as shown in FIG. That is, the rotation lever 19 is
Are rotatably engaged in the long hole 18 for the bearing, and the first
The lower surface of the engagement piece 20 is slidably overlapped with the upper surface of the lower portion 17, and the lower surface of the second engagement piece 21 is slidably overlapped with the upper surface of the substrate 10 through the engagement hole 15. In a state where the guide roller 24 is movably engaged along the inner peripheral edge portion 16 a of the guide hole 16, the rotation shaft 22 is attached to the lower surface of the substrate 10.
It is mounted so that it can rotate around the center. This rotating lever 1
Reference numeral 9 denotes the first drive gear 11a or the second drive gear 11 from the side where the intermediate gear 23 is to be pushed out by the rotation of the first drive gear 11a or the second drive gear 11b.
b.
【００２０】回動レバー１９と基板１０との間には、回
動レバー１９の回動中心を挾んで反転バネとして機能さ
せるバネ２５が介装されている。このバネ２５により、
回動レバー１９に回動中心に向かう分力Ｆ1′（図５
（Ｂ）参照）と、中間ギヤ２３を第１駆動ギヤ１１ａ、
または、第２駆動ギヤ１１ｂに噛合させる向きへの分力
Ｆ2′（図５（Ｂ）参照）とが作用する。バネ２５によ
る分力Ｆ2により回動レバー１９は、中立位置の両側に
択一的に偏倚される。そして、中間ギヤ２３は、第１駆
動ギヤ１１ａと第１作動ギヤ１２ａ、または、第２駆動
ギヤ１１ｂと第２作動ギヤ１２ｂに択一的に噛合するも
のである。尚、開口部１４の先端縁部１４ａ，係合孔１
５の内外周縁部１５ａ，１５ｂ、及びガイド孔１６の内
外周縁部１６ａ，１６ｂは、ここでは中立位置における
回動レバー１９の回動軸２２の位置を中心とする同心円
弧を主体とする形状となっている。A spring 25 functioning as a reversing spring is interposed between the rotation lever 19 and the substrate 10 with the rotation center of the rotation lever 19 interposed therebetween. With this spring 25,
A component F 1 ′ (FIG. 5)
(B)) and the intermediate gear 23 is connected to the first drive gear 11a,
Alternatively, a component force F 2 ′ (see FIG. 5B) acts in a direction in which it meshes with the second drive gear 11b. Rotating lever 19 by the component force F 2 by the spring 25 is alternatively biased to either side of the neutral position. The intermediate gear 23 meshes alternatively with the first drive gear 11a and the first operation gear 12a or with the second drive gear 11b and the second operation gear 12b. In addition, the front edge 14a of the opening 14 and the engagement hole 1
Here, the inner and outer peripheral edges 15a and 15b of the guide hole 16 and the inner and outer peripheral edges 16a and 16b of the guide hole 16 have a shape mainly composed of concentric arcs centered on the position of the rotation shaft 22 of the rotation lever 19 at the neutral position. Has become.
【００２１】ガイド孔１６は、ガイドローラ２４の移動
軌跡を規定して中間ギヤ２３の移動軌跡を設定するもの
である。ガイド孔１６の内周縁部１６ａの両端側には、
傾斜部２６が設けられている。これら傾斜部２６は、中
間ギヤ２３が第１駆動ギヤ１１ａ、または、第２駆動ギ
ヤ１１ｂに噛合する状態において、ガイドローラ２４と
接触する部位の接線の方向が当該位置での回動レバー１
９の回動軸２２を中心とする円の接線方向に対して傾き
をなす。この傾斜部２６はガイドローラ２４（回動レバ
ー１９）をバネ２５の弾性力にて中間ギヤ２３を第１駆
動ギヤ１１ａ、または、第２駆動ギヤ１１ｂに噛合させ
る方向に押圧する向きの大きな分力Ｆ2を生起するもの
である。The guide hole 16 defines the movement locus of the guide roller 24 and sets the movement locus of the intermediate gear 23. At both ends of the inner peripheral edge 16a of the guide hole 16,
An inclined portion 26 is provided. When the intermediate gear 23 meshes with the first drive gear 11a or the second drive gear 11b, the direction of the tangential line of the portion that comes into contact with the guide roller 24 is set at the inclined portion 26 at the position.
9 is inclined with respect to the tangential direction of a circle centered on the rotation shaft 22. This inclined portion 26 has a large direction in which the guide roller 24 (rotating lever 19) is pressed by the elastic force of the spring 25 in the direction in which the intermediate gear 23 meshes with the first drive gear 11a or the second drive gear 11b. it is to occur the force F 2.
【００２２】なお、回動レバー１９の第１係合片２０と
第２係合片２１との間には、上方に向けて係合突起２７
が突設されている。この係合突起２７は、図４に示す如
く基板１０の上面に矢印Ｃ，Ｄ方向に往復動自在に装着
されたヘッドパネル２８の左右の係止溝２８ａ，２８ｂ
内に択一的に離脱自在に係合する。そして、ヘッドパネ
ル２８が停止位置にあるとき、その係止溝２８ａ，２８
ｂに回動レバー１９の係合突起２７が係合することによ
り、回動レバー１９が中立位置以外の回動位置に固定さ
れる。ヘッドパネル２８には、これが再生位置にあると
き基板１０の開口部１４と係合孔１５とに略対応合致す
る開口部２９が設けられている。Note that between the first engagement piece 20 and the second engagement piece 21 of the rotating lever 19, an engagement projection 27 is provided.
Is protruding. The engagement projections 27 are, as shown in FIG. 4, provided on the upper surface of the substrate 10 in left and right locking grooves 28a, 28b of a head panel 28 mounted to be reciprocally movable in directions of arrows C and D.
Alternatively releasably engages inside. When the head panel 28 is at the stop position, the locking grooves 28a, 28
The rotation lever 19 is fixed to a rotation position other than the neutral position by engaging the engagement protrusion 27 of the rotation lever 19 with b. The head panel 28 is provided with an opening 29 substantially corresponding to the opening 14 of the substrate 10 and the engaging hole 15 when the head panel 28 is at the reproducing position.
【００２３】次に、上記構成の回転伝達装置の動作を説
明する。Next, the operation of the rotation transmitting device having the above configuration will be described.
【００２４】図示しないモータにより、第１，第２駆動
ギヤ１１ａ，１１ｂは図１、及び図２中、矢印方向に示
すように互いに逆向きに回転駆動される。回動レバー１
９は、図示しない操作部材の操作に伴って図２中、矢印
Ａ，Ｂ方向に切換回動する。この回動は、回動レバー１
９を中立位置を越えて左右のいずれかへ偏倚させること
により、バネ２５の作用を受けてなされる。そして、回
動レバー１９が矢印Ａ方向に回動することにより、図２
中、実線で示す如く中間ギヤ２３が第１駆動ギヤ１１ａ
と第１作動ギヤ１２ａとに噛合する。この結果、第１駆
動ギヤ１１ａの回転力は、中間ギヤ２３を介して第１作
動ギヤ１２ａに伝達されて、この第１作動ギヤ１２ａが
回転する。また、回動レバー１９が矢印Ｂ方向に回動す
ることにより、図２中、２点鎖線で示す如く中間ギヤ２
３が第２駆動ギヤ１１ｂと第２作動ギヤ１２ｂとに噛合
する。この結果、第２駆動ギヤ１１ｂの回転力は、中間
ギヤ２３を介して第２作動ギヤ１２ｂに伝達されて、こ
の第２作動ギヤ１２ｂが回転する。The first and second drive gears 11a and 11b are rotationally driven in opposite directions by a motor (not shown) as shown by the arrows in FIGS. Rotating lever 1
Reference numeral 9 switches and rotates in the directions of arrows A and B in FIG. 2 in accordance with the operation of an operation member (not shown). This rotation is performed by the rotation lever 1
9 is deflected to either the left or right beyond the neutral position, by the action of the spring 25. 2 by rotating the rotation lever 19 in the direction of arrow A.
As shown by the middle and solid lines, the intermediate gear 23 is the first drive gear 11a.
And the first operating gear 12a. As a result, the torque of the first drive gear 11a is transmitted to the first operating gear 12a via the intermediate gear 23, and the first operating gear 12a rotates. The rotation of the rotation lever 19 in the direction of arrow B causes the intermediate gear 2 to rotate as shown by a two-dot chain line in FIG.
3 meshes with the second drive gear 11b and the second operating gear 12b. As a result, the torque of the second drive gear 11b is transmitted to the second operation gear 12b via the intermediate gear 23, and the second operation gear 12b rotates.
【００２５】ところで、中間ギヤ２３は、第１駆動ギヤ
１１ａ、または、第２駆動ギヤ１１ｂの矢印方向への回
転により押し出されようとする向き側から第１駆動ギヤ
１１ａ、または、第２駆動ギヤ１１ｂに噛合することに
なる。このため、第１駆動ギヤ１１ａ、または、第２駆
動ギヤ１１ｂの矢印方向への回転力により中間ギヤ２３
には第１駆動ギヤ１１ａ、または、第２駆動ギヤ１１ｂ
との噛合から外れようとする力が作用する。The intermediate gear 23 is driven by the first drive gear 11a or the second drive gear 11b in the direction of the arrow to be pushed out from the first drive gear 11a or the second drive gear 11a. 11b. Therefore, the rotation of the first drive gear 11a or the second drive gear 11b in the direction of the arrow causes the intermediate gear 23 to rotate.
The first drive gear 11a or the second drive gear 11b
A force is exerted to disengage from the engagement.
【００２６】しかしながら、中間ギア２３が第１駆動ギ
ヤ１１ａ、または、第２駆動ギヤ１１ｂに噛合した状態
においては、前述したように中間ギア２３を第１駆動ギ
ヤ１１ａ、または、第２駆動ギヤ１１ｂに噛合させよう
とする向きの分力Ｆ2′が作用しており、更には、前記
傾斜部２６における作用により大きな分力Ｆ2が働く。
この分力Ｆ2，Ｆ2′により、回動レバー１９は、中間ギ
ヤ２３が第１駆動ギヤ１１ａ、または、第２駆動ギヤ１
１ｂに噛合する方向に付勢される。この結果、中間ギヤ
２３と第１駆動ギヤ１１ａ、または、第２駆動ギヤ１１
ｂとの噛合状態が浅くならない。However, when the intermediate gear 23 is engaged with the first drive gear 11a or the second drive gear 11b, as described above, the intermediate gear 23 is connected to the first drive gear 11a or the second drive gear 11b. A component force F 2 ′ acting in the direction to be meshed with is applied, and a large component force F 2 is exerted by the action of the inclined portion 26.
Due to the component forces F 2 and F 2 ′, the rotation lever 19 causes the intermediate gear 23 to move to the first drive gear 11 a or the second drive gear 1.
1b. As a result, the intermediate gear 23 and the first drive gear 11a or the second drive gear 11a
The meshing state with b does not become shallow.
【００２７】即ち、回動レバー１９には、その回動中心
を跨いで基板１０との間にバネ２５が掛け渡されてお
り、中間ギア２３が第１駆動ギヤ１１ａ、または、第２
駆動ギヤ１１ｂに噛合した状態、つまり、回動レバー１
９が中立位置から偏倚した状態では、前記バネ２５の引
張り力は図５（Ｂ）に示すように回動レバー１９の回転
中心から外れた向き（孔１３のバネ２５が係止した位置
に向けて）に作用する。そして、この力は、ガイドロー
ラ２４をガイド孔１６の内周縁部１６ａに押し付ける分
力Ｆ1′と、ガイドローラ２４をガイド孔１６の端部に
移動させようとする分力Ｆ2′として作用する。この分
力Ｆ2′が第１駆動ギヤ１１ａ、または、第２駆動ギヤ
１１ｂの回転に抗して中間ギア２３を第１駆動ギヤ１１
ａ、または、第２駆動ギヤ１１ｂに噛合させる向きに作
用する。That is, a spring 25 is suspended between the rotation lever 19 and the substrate 10 across the center of rotation, and the intermediate gear 23 is connected to the first drive gear 11a or the second drive gear 11a.
In a state of being meshed with the drive gear 11b,
In the state in which the spring 9 is deviated from the neutral position, the tension of the spring 25 is directed away from the rotation center of the rotation lever 19 as shown in FIG. Act). This force acts as a component force F 1 ′ for pressing the guide roller 24 against the inner peripheral edge 16 a of the guide hole 16 and a component force F 2 ′ for moving the guide roller 24 to the end of the guide hole 16. I do. This component F 2 ′ causes the intermediate gear 23 to rotate the first drive gear 11 a against the rotation of the first drive gear 11 a or the second drive gear 11 b.
a, or acts in a direction to mesh with the second drive gear 11b.
【００２８】これに加えて本実施例では、ガイド孔１６
の両端が傾斜部２６として形成されている。これ故、図
５（Ａ）に示すように、バネ２５によりガイドローラ２
４に作用する力のガイド孔１６の内周縁部１６ａ（傾斜
部２６）に沿って作用する分力Ｆ2は、その傾きの分だ
け強くなる。この結果、この大きな分力Ｆ2にて中間ギ
ア２３が第１駆動ギヤ１１ａ、または、第２駆動ギヤ１
１ｂに押し付けられるので、第１駆動ギヤ１１ａ、また
は、第２駆動ギヤ１１ｂの回転によって中間ギア２３を
外側に向けて逃がそうとする力が効果的に相殺され、そ
の噛合状態が確実化される。In addition, in this embodiment, the guide hole 16
Are formed as inclined portions 26. For this reason, as shown in FIG.
4 component force F 2 acting along the inner peripheral edge portion 16a of the force of the guide hole 16 which acts (the inclined portion 26), the stronger by the amount of the inclination. As a result, the intermediate gear 23 at the large component force F 2 is the first drive gear 11a or the second driving gear 1
1b, the rotation of the first drive gear 11a or the second drive gear 11b effectively cancels the force that attempts to escape the intermediate gear 23 outward, thereby ensuring the meshing state. You.
【００２９】故に上述した構成によれば、バネ２５の力
を効果的に作用させて中間ギア２３を第１駆動ギヤ１１
ａ、または、第２駆動ギヤ１１ｂに安定・確実に噛合さ
せることが可能となる。Therefore, according to the above-described structure, the intermediate gear 23 is moved to the first drive gear 11 by effectively applying the force of the spring 25.
a or the second drive gear 11b can be stably and reliably meshed.
【００３０】なお、上記実施例においては、ガイド孔１
６の内周縁部１６ａを、回動レバー１９の回動軸２２を
中心とする円弧状とし、その内周縁部１６ａの両端部に
直線状の傾斜部２６を設けたが、これに限られることは
ない。In the above embodiment, the guide hole 1
6, the inner peripheral edge 16a is formed in an arc shape centering on the rotating shaft 22 of the rotating lever 19, and the linear inclined portions 26 are provided at both ends of the inner peripheral edge 16a. However, the present invention is not limited to this. There is no.
【００３１】例えば、図６に示すようにガイド孔１６の
内周縁部１６ａを、両端側に向かうに従い、急傾斜とな
る楕円の円弧状とし、内周縁部１６ａの両端部を回動レ
バー１９の回動中心に向かう方向に対して実質的に傾く
傾斜部２６としても良い。For example, as shown in FIG. 6, the inner peripheral edge 16a of the guide hole 16 is formed into an elliptical arc shape that is steeply inclined toward both ends, and both ends of the inner peripheral edge 16a are The inclined portion 26 may be substantially inclined with respect to the direction toward the rotation center.
【００３２】また、ガイド孔１６の内周縁部１６ａを、
回動レバー１９の回動軸２２とガイドローラ２４との距
離よりも短い半径の円弧を為す形状としても良く、要
は、ガイド孔１６の内周縁部１６ａの両端部を、回動レ
バー１９の回動軸を中心とする接線方向に対して傾きを
為すようにすれば良い。The inner peripheral edge 16a of the guide hole 16 is
It may have a shape that forms an arc having a radius shorter than the distance between the rotation shaft 22 of the rotation lever 19 and the guide roller 24. In short, both ends of the inner peripheral edge 16 a of the guide hole 16 are What is necessary is just to incline with respect to the tangential direction centering on a rotation axis.
【００３３】また、上記実施例においては、オートリバ
ース式テープレコーダに適用したが、これに限られるこ
となく、他の機器の回転伝達系にも幅広く適用可能であ
る。In the above embodiment, the present invention is applied to an auto-reverse tape recorder. However, the present invention is not limited to this, and can be widely applied to a rotation transmission system of another device.
【００３４】即ち、ここでは、互いに逆向きに回転する
駆動ギヤ１１ａ，１１ｂに対して中間ギア２３を選択的
に噛合させて、その回転を作動ギヤ１２ａ，１２ｂに伝
達する回転伝達系について例示したが、一組の駆動ギヤ
と作動ギヤとの間に、選択的に中間ギアを介挿するだけ
の回転伝達系についても同様に適用可能なことは云うま
でもない。That is, the rotation transmission system in which the intermediate gear 23 is selectively meshed with the drive gears 11a and 11b rotating in opposite directions to transmit the rotation to the operation gears 12a and 12b has been exemplified. However, it goes without saying that the present invention can be similarly applied to a rotation transmission system in which an intermediate gear is selectively interposed between a set of drive gears and an operation gear.
【００３５】[0035]
【考案の効果】以上の如く本考案の回転伝達装置によれ
ば、ガイド部の傾斜部により生起される分力により、中
間ギヤと駆動ギヤとの噛合状態が浅くなるのを抑制する
から、ばね力の大きいばねを用いることなく、中間ギヤ
と駆動ギヤとの噛合状態が浅くなるのを確実に防止で
き、しかも、回動レバーを左右に切り換えるための力も
小さくて済むものである。As described above, according to the rotation transmitting device of the present invention, the engagement between the intermediate gear and the drive gear is prevented from becoming shallow due to the component force generated by the inclined portion of the guide portion. Without using a spring having a large force, the meshing state between the intermediate gear and the drive gear can be reliably prevented from becoming shallow, and the force for switching the rotating lever between left and right can be reduced.
【図１】本考案の一実施例に係る回転伝達装置を示す中
立状態の底面図である。FIG. 1 is a bottom view of a neutral state showing a rotation transmission device according to an embodiment of the present invention.
【図２】同回動状態の底面図である。FIG. 2 is a bottom view in the rotating state.
【図３】図１のIII-III線に沿う断面図である。FIG. 3 is a sectional view taken along line III-III in FIG.
【図４】図１に示す回転伝達装置の分解斜視図である。FIG. 4 is an exploded perspective view of the rotation transmitting device shown in FIG.
【図５】図１に示す回転伝達装置と傾斜部を有さない場
合の分力比較図である。5 is a component force comparison diagram when the rotation transmitting device shown in FIG. 1 has no inclined portion.
【図６】本考案の他の実施例を示す図である。FIG. 6 is a view showing another embodiment of the present invention.
【図７】従来の回転伝達装置の回動状態の底面図であ
る。FIG. 7 is a bottom view of a conventional rotation transmitting device in a rotating state.
１１ａ 第１駆動ギヤ １１ｂ 第２駆動ギヤ １２ａ 第１作動ギヤ １２ｂ 第２作動ギヤ １６ ガイド孔（ガイド部） １８ 軸受用長孔（軸受手段） １９ 回動レバー ２２ 回動軸 ２３ 中間ギヤ ２５ バネ ２６ 傾斜部 11a 1st drive gear 11b 2nd drive gear 12a 1st operation gear 12b 2nd operation gear 16 Guide hole (guide part) 18 Bearing long hole (bearing means) 19 Rotating lever 22 Rotating shaft 23 Intermediate gear 25 Spring 26 Inclined part
Claims (3)
ギヤに伝達する回転伝達装置であって、中間ギヤは回動
レバーに支持され、駆動ギヤは中間ギヤを押し退ける向
きに回転し、回動レバーにバネの弾力を作用させて中間
ギヤと駆動ギヤとの噛合状態を維持するようしたものに
おいて、 前記回動レバーの支点位置を一定の方向に移動自在と
し、 中間ギヤが駆動ギヤに噛合した状態において回動レバー
に係合する噛合状態保持部を設け、この噛合状態保持部
と前記バネとの協働により、中間ギヤを駆動ギヤに押し
付ける向きの力を生じさせることを特徴とする回転伝達
装置。 A drive gear is rotated via an intermediate gear.
A rotation transmission device for transmitting to gears, wherein the intermediate gear rotates.
Lever supported, drive gears push away intermediate gears
And rotate the lever to apply the elastic force of the spring to the middle
To maintain the meshing state of the gear and drive gear
In this case, the fulcrum position of the rotating lever can be moved in a certain direction.
When the intermediate gear meshes with the drive gear,
The meshing state holding portion is provided to engage with the meshing state holding portion.
And the spring cooperate to push the intermediate gear to the drive gear.
Rotational transmission characterized by producing a force in the direction of application
apparatus.
軸を係合させることを特徴とする請求項１記載の回転伝
達装置。 2. The meshing state maintaining section includes:
The rotary transmission according to claim 1, wherein the shaft is engaged.
Device.
維持部を２組、前記回動レバー、中間ギヤおよびバネに
対して対称配置し、回動レバーが各組の中間位置を通過
するとき前記バネが反転動作し、該バネが各組の噛合状
態維持部と協働して、中間ギヤをいずれの組の駆動ギヤ
にも選択的に押し付けることを特徴とする請求項１記載
の回転伝達装置。 3. The driving gear, the operating gear and the meshing state.
Two sets of holding parts, the rotating lever, intermediate gear and spring
Symmetrical arrangement with respect to each other, with the rotating lever passing through the middle position of each set
When the springs are turned over, the springs
In cooperation with the state maintaining unit, the intermediate gear
2. The method according to claim 1, wherein the pressing is selectively performed also on the pressing member.
Rotation transmission device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991070561U JP2588918Y2 (en) | 1991-08-08 | 1991-08-08 | Rotation transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991070561U JP2588918Y2 (en) | 1991-08-08 | 1991-08-08 | Rotation transmission device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0514703U JPH0514703U (en) | 1993-02-26 |
| JP2588918Y2 true JP2588918Y2 (en) | 1999-01-20 |
Family
ID=13435071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991070561U Expired - Fee Related JP2588918Y2 (en) | 1991-08-08 | 1991-08-08 | Rotation transmission device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2588918Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4693579B2 (en) * | 2005-10-03 | 2011-06-01 | アルパイン株式会社 | Disk unit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2842284A1 (en) * | 1978-09-28 | 1980-04-17 | Bayer Ag | N-DIAZOLYLALKYL HALOGEN ACETANILIDES, METHOD FOR THE PRODUCTION THEREOF AND THEIR USE AS HERBICIDES |
| JPS6115303A (en) * | 1984-06-30 | 1986-01-23 | 株式会社東芝 | Method of producing oxide voltage nonlinear resistor |
-
1991
- 1991-08-08 JP JP1991070561U patent/JP2588918Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0514703U (en) | 1993-02-26 |
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