JPH042426Y2 - - Google Patents
Info
- Publication number
- JPH042426Y2 JPH042426Y2 JP15807784U JP15807784U JPH042426Y2 JP H042426 Y2 JPH042426 Y2 JP H042426Y2 JP 15807784 U JP15807784 U JP 15807784U JP 15807784 U JP15807784 U JP 15807784U JP H042426 Y2 JPH042426 Y2 JP H042426Y2
- Authority
- JP
- Japan
- Prior art keywords
- gear
- lever
- fast
- forwarding
- reel
- 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
Links
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 description 14
- 238000007906 compression Methods 0.000 description 14
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009194 climbing Effects 0.000 description 1
Landscapes
- Gear Transmission (AREA)
- Transmission Devices (AREA)
- Structure Of Transmissions (AREA)
Description
【考案の詳細な説明】
(産業上の利用分野)
本考案はテープレコーダに係り、特に、テープ
レコーダの早送りおよび巻戻し時において、リー
ル台を回転駆動する歯車の円滑な回転を行なうよ
うにした歯車伝達機構に関する。[Detailed description of the invention] (Field of industrial application) The present invention relates to a tape recorder, and in particular, the present invention is designed to smoothly rotate a gear that rotationally drives a reel stand during fast forwarding and rewinding of the tape recorder. Related to gear transmission mechanism.
(従来の技術)
一般に、テープレコーダの駆動系は、多数の歯
車から成る一連の歯車群によつて構成されてお
り、例えば、記録・再生時には、モータによつて
常時回転駆動されている駆動歯車と、走行方向変
換手段によつてこの歯車と選択的に噛合する被駆
動歯車との組み合わせによつて、一対のリール台
が正転および逆転駆動され、キヤプスタンとピン
チローラとによつて送り出される磁気テープをリ
ール台を介してテープカセツトのテープリールに
巻き取るように構成されていることは周知のこと
である。(Prior Art) Generally, the drive system of a tape recorder is composed of a series of gears consisting of a large number of gears. For example, during recording and playback, a drive gear is constantly driven to rotate by a motor. and a driven gear that selectively meshes with this gear by the running direction converting means, the pair of reel stands are driven in forward and reverse rotation, and the magnetic field is fed out by the capstan and the pinch roller. It is well known that the tape is wound onto a tape reel of a tape cassette via a reel stand.
また、早送りおよび巻戻し時も同様に、歯車群
の一の歯車が操作部によつて適宜選択駆動される
ことにより、それぞれのリール台を回転駆動する
ものである。 Similarly, during fast forwarding and rewinding, one of the gears in the gear group is appropriately selected and driven by the operating section, thereby rotating each reel stand.
(考案が解決しようとする問題点)
しかしながら、この種、従来のテープレコーダ
の駆動系の歯車機構は、早送り時および巻戻し時
の歯車伝達おいて、回転方向を食い込みにする例
が多くなつて、どうしても歯車の歯数が多くなる
傾向があつた。従つて、最小限の歯数の歯車でリ
ール台を回転駆動する場合、歯車の回転方向が逃
げ方向になつてしまうきらいがある。しかるに、
歯車に作用する負荷が多い場合には、従動側の歯
車がロツクしたり、あるいは駆動歯車がリール台
を駆動する被駆動歯車と適切に噛合うことなくこ
れが逃げてしまつて、両歯車の歯先だけが接触す
ることによつて係合時のノイズが発生するなど、
リール台の円滑な回転を望むことができぬばかり
か、両歯車が摩耗したりするなど機器に及ぼす影
響が大となる欠点があつた。(Problem to be solved by the invention) However, in the gear mechanism of the drive system of this type of conventional tape recorder, there are many cases in which the rotation direction bites in the gear transmission during fast forwarding and rewinding. However, there was a tendency for the number of gear teeth to increase. Therefore, when the reel stand is rotationally driven by a gear with a minimum number of teeth, the rotational direction of the gear tends to be in the escape direction. However,
If there is a large load acting on the gears, the driven gear may lock up, or the drive gear may escape without properly meshing with the driven gear that drives the reel base, causing the tips of the teeth on both gears to become damaged. Noise may occur during engagement due to contact between only the two parts.
Not only could the reel stand not rotate smoothly, but it also had the disadvantage of causing both gears to wear out, which had a large effect on the equipment.
(問題点を解決するための手段)
本考案は上記従来の欠点に鑑みなされたもので
あり、一対のリール台15,16をそれぞれ回転
駆動する一対の早送りリール歯車13および巻戻
しリール歯車14と、
第1の弾性手段9にて回動力が付勢されてお
り、一対のカム部7d,7eを有すると共に前記
巻戻しリール歯車14と選択的に噛合可能な駆動
歯車8を備え、一端部に操作部材12の操作力と
協働して前記第1の弾性手段に抗して回動力を付
勢する第2の弾性手段10を備えた巻戻しレバー
7と、
前記駆動歯車8を回転駆動する駆動機構5と、
第3の弾性手段18にて回動力が付勢されてお
り、前記巻戻しレバー7のカム部7d,7eをそ
れぞれ選択的に係止可能とする一対の係止部17
c,17dを備えると共に前記駆動歯車8および
早送りリール歯車13と噛合可能な早送り歯車2
0を備え、且つ一端部に操作部材24の操作力と
協働して前記第3の弾性手段に抗して回動力を付
勢する第4の弾性手段22を備えた早送りレバー
17とを有してなり、
前記一方の操作部材12による巻戻し時、前記
巻戻しレバー7の前記第1の弾性手段に抗した所
定量の回動によりその他方のカム部7eと前記巻
戻しレバー17の他方の係止部17bとの当接に
より回動力が蓄積され、引続きの操作力により前
記係止部17bが前記カム部7eを乗越えて両者
の当接が解除されることにより、前記蓄積された
回動力により巻戻しレバー7の回動変位に伴なう
駆動歯車8の変位によつて駆動歯車8が前記巻戻
しリール歯車14と噛合する一方、
前記他方の操作部材24の操作による早送り
時、前記早送りレバー17の前記第3の弾性手段
に抗した所定量の回動によりその一方の係止部1
7cと前記カム部7dとの当接により回動力が蓄
積され、引続きの操作力により前記係止部17c
が前記カム部7dを乗越えて両者の当接が解除さ
れることにより、前記蓄積された回動力により早
送りレバー17上の早送り歯車20が早送りリー
ル歯車13および駆動歯車8と同時噛合してなる
ことを特徴とするテープレコーダを提供するもの
である。(Means for Solving the Problems) The present invention was devised in view of the above-mentioned drawbacks of the conventional art, and includes a pair of fast-forwarding reel gears 13 and a rewinding reel gear 14 that rotationally drive the pair of reel stands 15 and 16, respectively. The rotating force is applied by the first elastic means 9, and the drive gear 8 has a pair of cam parts 7d and 7e and can be selectively engaged with the rewind reel gear 14, and has a drive gear 8 at one end. a rewinding lever 7 including a second elastic means 10 that cooperates with the operating force of the operating member 12 to urge rotational force against the first elastic means; and a rewinding lever 7 that rotationally drives the drive gear 8. A pair of locking portions 17 which are biased by a driving mechanism 5 and a third elastic means 18 to selectively lock the cam portions 7d and 7e of the rewinding lever 7, respectively.
c, 17d, and is capable of meshing with the drive gear 8 and the fast-feeding reel gear 13.
0, and a fast-forwarding lever 17 having a fourth elastic means 22 at one end that cooperates with the operating force of the operating member 24 to urge rotational force against the third elastic means. When rewinding by the one operation member 12, the other cam portion 7e and the other rewind lever 17 are rotated by a predetermined amount of rotation of the rewind lever 7 against the first elastic means. Rotation force is accumulated by the contact with the locking part 17b, and the locking part 17b overcomes the cam part 7e by the subsequent operation force, and the contact between the two is released, so that the accumulated rotation is The drive gear 8 meshes with the rewind reel gear 14 due to the displacement of the drive gear 8 accompanying the rotational displacement of the rewind lever 7 due to power; One of the locking portions 1 is rotated by a predetermined amount of rotation of the fast-forwarding lever 17 against the third elastic means.
7c and the cam portion 7d, a rotational force is accumulated, and a subsequent operating force causes the locking portion 17c to close.
crosses the cam portion 7d and the contact between the two is released, so that the fast-forwarding gear 20 on the fast-forwarding lever 17 meshes with the fast-forwarding reel gear 13 and the drive gear 8 simultaneously due to the accumulated rotational force. The present invention provides a tape recorder characterized by the following.
(実施例)
第1図は本考案になるテープレコーダの特徴を
最も良く表わす歯車機構の平面図であり、同図A
は停止時、同図Bは早送り時、同図Cは巻戻し時
の状態をそれぞれ示すものである。(Example) Figure 1 is a plan view of a gear mechanism that best represents the features of the tape recorder of the present invention.
shows the state when stopped, B shows the state when fast forwarding, and C shows the state when rewinding.
同図Aにおいて、1,2はキヤプスタン3,4
をそれぞれ備えたフライホイール歯車であり、こ
れらは図示せぬモータによつて、駆動ベルトを介
して常時正転(反時計方向)および逆転(時計方
向)回転駆動されている。また、これらのフライ
ホイール歯車1,2は図示せぬ走行方向変換手段
と協働して、記録および再生時、適宜選択的に噛
合される一対の歯車(図示せぬ)を介して後述す
る一対のリール台駆動歯車と適宜噛合して、リー
ル台を定速正転および定速逆転するように構成さ
れている。 In the same figure A, 1 and 2 are capstans 3 and 4.
These flywheel gears are constantly driven to rotate forward (counterclockwise) and reversely (clockwise) by a motor (not shown) via a drive belt. In addition, these flywheel gears 1 and 2 cooperate with a running direction changing means (not shown), and are connected to a pair of gears (not shown), which will be described later, through a pair of gears (not shown) that are selectively engaged with each other during recording and reproduction. The reel stand is configured to mesh with the reel stand drive gear as appropriate to rotate the reel stand at a constant speed forward and at a constant speed reversely.
正転用のフライホイール歯車1は、中間歯車構
体(駆動機構)5の大径の歯車6と噛合してこれ
を減速駆動する。また、歯車6は後述する回動自
在な巻戻しレバー7に回転自在に支持されている
巻戻し歯車(駆動歯車)8と常時噛合している。 The flywheel gear 1 for forward rotation meshes with a large-diameter gear 6 of an intermediate gear structure (drive mechanism) 5 to drive the gear at a reduced speed. Further, the gear 6 is always meshed with a rewind gear (drive gear) 8 rotatably supported by a rotatable rewind lever 7, which will be described later.
7は基部7aおよびこの基部7aより上下に延
在する一対の腕部7b,7cとによつて略コ字状
に一体形成された本考案の要部の一部を構成する
巻戻しレバーであり、これは基部7aと下側の腕
部7cとの連結部にて上記中間歯車構体5の回転
軸5aに回動自在に枢支されると共に、下部の腕
部7cに張架された第10弾性手段であるコイルば
ね(復帰スプリング)9によつて回転軸5aに関
して時計方向へ回動力が付勢されている。また、
巻戻しレバー7の基部7aには上記巻戻し歯車8
が回転自在に支持され、この基部7aの腕部7
b,7c側内方には略三角状の突起部(カム部)
7dが突出形成され、また、上方の腕部7bの端
部には下方に突出した突起部7e(カム部)が一
体形成されている。 Reference numeral 7 denotes a rewinding lever which is integrally formed in a substantially U-shape by a base 7a and a pair of arm parts 7b and 7c extending up and down from the base 7a, and constitutes a part of the main part of the present invention. , which is rotatably supported on the rotating shaft 5a of the intermediate gear structure 5 at the connecting portion between the base 7a and the lower arm 7c, and the 10th gear which is stretched over the lower arm 7c. A rotational force is applied clockwise with respect to the rotation shaft 5a by a coil spring (return spring) 9, which is an elastic means. Also,
The rewind gear 8 is attached to the base 7a of the rewind lever 7.
is rotatably supported, and the arm portion 7 of this base portion 7a
There is a roughly triangular protrusion (cam part) inward on the b and 7c sides.
7d is formed to protrude, and a protrusion 7e (cam part) protruding downward is integrally formed at the end of the upper arm 7b.
10はα状に巻回された第2の弾性手段である
圧着ばねで、これは巻戻しレバー7の腕部7cの
端部に植設されたピン11に嵌挿されており、一
端係止部10aが巻戻しレバー7に植設されたピ
ンに係止されると共に、他端係止部10bは機器
の操作部に連結された操作部材である巻戻しバー
12に係止されている。従つて、巻戻しレバー7
は第1図Aに示す如く、通常はコイルばね9の弾
性復帰力によつて時計方向へ回動力が付勢されて
いるものの、圧着ばね10の他端係止部10bが
巻戻しバー12に当接してその回動位置が規制さ
れて静止状態が維持されている。 Reference numeral 10 denotes a compression spring which is a second elastic means wound in an α shape, and this is fitted into a pin 11 implanted in the end of the arm 7c of the rewinding lever 7, and one end is locked. The portion 10a is locked to a pin implanted in the rewind lever 7, and the other end locking portion 10b is locked to a rewind bar 12, which is an operating member connected to an operating section of the device. Therefore, the rewind lever 7
As shown in FIG. 1A, normally the rotational force is applied in the clockwise direction by the elastic return force of the coil spring 9, but when the other end locking portion 10b of the compression spring 10 is pressed against the unwinding bar 12. When they come into contact with each other, their rotational position is restricted and a stationary state is maintained.
13,14はテープカセツトのリールハブ(図
示せぬ)を回転駆動する一対のリール台15,1
6をそれぞれ駆動する早送りリール歯車および巻
戻しリール歯車であり、一方の早送りリール歯車
13は後述する早送りレバー17の早送り歯車2
0と噛合可能となつており、また、他方の巻戻し
リール歯車14は上記中間歯車構体5の大径の歯
車6上を添接噛合する巻戻し歯車8と噛合可能と
なつている。 Reference numerals 13 and 14 denote a pair of reel stands 15 and 1 for rotationally driving a reel hub (not shown) of a tape cassette.
A fast-forwarding reel gear 13 and a rewinding reel gear drive the fast-forwarding reel gear 6, respectively, and one fast-forwarding reel gear 13 drives the fast-forwarding gear 2 of the fast-forwarding lever 17, which will be described later.
0, and the other rewind reel gear 14 is also capable of meshing with the rewind gear 8 which is in contact engagement with the large diameter gear 6 of the intermediate gear structure 5.
17は基部17aとこれの一端より上下に延在
する係止部である一対の腕部17b,17cとに
より略T字状に一体的に形成された早送りレバー
であり、一方の腕部17bの端部は、後述する台
3の弾性手段であるコイルばね18の回動力によ
つて上記巻戻しレバー7の突起部7eに係止され
ていると共に、他方の腕部17cの端部はコイル
ばね9の回動力により巻戻しレバー7の他端の突
起部(カム部)7dに係止されている。また、基
部17aと一対の腕部17b,17cとの連結部
には軸19に支持された早送り歯車20が設けら
れている。基部17aの略中央部は軸21に回動
自在に枢支されると共に、コイルばね18によつ
て時計方向への回動力が付勢されている。 Reference numeral 17 denotes a fast-forwarding lever that is integrally formed in a substantially T-shape by a base 17a and a pair of arm portions 17b and 17c, which are locking portions extending vertically from one end of the base portion 17a. The end portion is locked to the protrusion 7e of the rewinding lever 7 by the rotational force of a coil spring 18, which is an elastic means of the table 3, which will be described later, and the end portion of the other arm portion 17c is held by a coil spring. It is locked to a protrusion (cam part) 7d at the other end of the rewind lever 7 by the rotational force of the rewind lever 7. Further, a fast-forwarding gear 20 supported by a shaft 19 is provided at a connecting portion between the base portion 17a and the pair of arm portions 17b and 17c. A substantially central portion of the base portion 17a is rotatably supported by a shaft 21, and a clockwise rotational force is applied by a coil spring 18.
22はα状に巻回された第4の弾性手段である
圧着ばねであり、これは早送りレバー17の基部
17aの他端部に植設されたピン23に嵌挿さ
れ、この一端部22aは早送りレバー17の基部
17aに植設されたピンに係止されると共に、他
端部22bは機器の操作部に連結された早送りバ
ー24に係止されている。従つて、早送りレバー
17は第1図Aに示す如く、通常はコイルばね1
8の弾性復帰力によつて時計方向へ回動力が付勢
されているものの、圧着ばね22の他端係止部2
2bが早送りバー24に当接してその回動位置が
規制されて静止状態が維持されている。早送りモ
ード時、早送りレバー17が反時計方向に回動し
た際には、早送り歯車20が巻戻し歯車8および
早送りリール歯車13と同時に噛合してフライホ
イール歯車1の回転によつてこれが反時計方向に
回転してリール台15を高速で回転させることに
なる。なお、上記巻戻しレバー7および早送りレ
バー17にそれぞれ支持された圧着ばね10,2
2のばね定数はそれぞれの巻戻し、早送りバー1
2,24にて押圧されて所定の角度だけ撓んだ時
に、各レバーに張架されたコイルばね9,18の
弾性復帰力に打ち勝つようにバネ定数が適宜設定
されている。 Reference numeral 22 denotes a compression spring which is a fourth elastic means wound in an α-shape, and this is fitted into a pin 23 implanted in the other end of the base 17a of the fast-forwarding lever 17. It is locked to a pin implanted in the base 17a of the fast-forwarding lever 17, and the other end 22b is locked to a fast-forwarding bar 24 connected to an operating section of the device. Therefore, as shown in FIG.
Although the rotation force is applied clockwise by the elastic return force of 8, the other end locking portion 2 of the compression spring 22
2b comes into contact with the fast-forwarding bar 24 to restrict its rotational position and maintain a stationary state. In the fast-forward mode, when the fast-forward lever 17 rotates counterclockwise, the fast-forward gear 20 meshes with the rewind gear 8 and the fast-forward reel gear 13 at the same time, and the rotation of the flywheel gear 1 causes the fast-forward gear 20 to rotate counterclockwise. This causes the reel stand 15 to rotate at high speed. Note that pressure springs 10 and 2 supported by the rewind lever 7 and the fast forward lever 17, respectively,
2 spring constants for each rewind and fast forward bar 1
The spring constant is appropriately set so as to overcome the elastic return force of the coil springs 9, 18 stretched over each lever when the levers are pressed by the levers 2 and 24 and bent by a predetermined angle.
なお、25は偏心カム部25aを備えて中間歯
車構体5の小歯車5bと噛合するオートストツプ
歯車であり、これは図示せぬオートストツプレバ
ーと協働して機器を停止させたり、或いは磁気ヘ
ツドを反転させる機能を有するものである。また
26は一部を欠歯したヘツド反転歯車であつて、
この歯車26の回転によつて磁気ヘツドを搭載し
た図示せぬヘツドベースが、カム26aの作用に
よつて記録および再生位置より後退すると同時
に、図示せぬヘツド反転機器が磁気ヘツドを反転
させるものである。また、27,28はリール台
15,16と同軸上に支持され、記録・再生時に
おいて定速操行用として用いられる歯車である。 Note that 25 is an auto-stop gear that has an eccentric cam portion 25a and meshes with the small gear 5b of the intermediate gear structure 5. This gear cooperates with an auto-stop lever (not shown) to stop the equipment or to stop the magnetic head. It has a reversing function. 26 is a head reversing gear with some teeth missing,
As the gear 26 rotates, the head base (not shown) on which the magnetic head is mounted is moved back from the recording and reproducing position by the action of the cam 26a, and at the same time, a head reversing device (not shown) reverses the magnetic head. . Further, 27 and 28 are gears supported coaxially with the reel stands 15 and 16 and used for constant speed operation during recording and reproduction.
ここで本考案になるテープレコーダの歯車機構
の具体的な動作について各図に沿つて説明する。 Here, the specific operation of the gear mechanism of the tape recorder according to the present invention will be explained with reference to each figure.
(1) 早送りモード時
第1図Aに示す状態より、機器の操作部と連結
された早送りバー24を上方に押圧すると、同図
Bに示すように、圧着ばね22が撓むことによ
り、早送りレバー17に張架されたコイルばね1
8の弾性力に抗して早送りレバー17を軸21に
関してこれを若干反時計方向に回動するものの、
腕部17cが突起部7dによつてこれ以上の回動
を阻止される。更に、早送りバー24が押圧され
最終位置まで達すると、圧着バネ22の弾性力が
コイルばね18の弾性力に航しつつ腕部17cが
突起部7d上を徐々に乗り上げて弾性力が蓄積さ
れる。ここで、圧着ばね22の弾性力が早送りレ
バー17に張架されたコイルばね18の弾性力に
打つ勝つて早送りレバー17の腕部17cが突起
部7dの頂点を乗り越えると、早送りレバー17
の腕部17cによる圧着ばね22に対する蓄積弾
性力が一気に解除され、これによつて早送りレバ
ー17が瞬時に回動する。従つて、この早送りレ
バー17の瞬間的な回動力によつて、この早送り
レバー17に支持された早送り歯車20は一気に
巻戻し歯車8および早送りリール歯車13と同時
に噛合して、駆動力は、駆動源となるフライホイ
ール歯車1、中間歯車構体5の歯車6、巻戻し歯
車8、早送り歯車20を介して早送りリール歯車
13に伝達され、リール台15を高速に回転駆動
することになる。(1) In fast-forward mode When the fast-forward bar 24 connected to the operating section of the device is pressed upward from the state shown in FIG. 1A, the compression spring 22 is bent as shown in FIG. Coil spring 1 stretched over lever 17
Although the fast forwarding lever 17 is rotated slightly counterclockwise about the shaft 21 against the elastic force of 8,
Further rotation of the arm portion 17c is prevented by the projection portion 7d. Furthermore, when the fast-forwarding bar 24 is pressed and reaches the final position, the elastic force of the compression spring 22 transfers to the elastic force of the coil spring 18, and the arm portion 17c gradually rides on the protrusion 7d, accumulating elastic force. . Here, when the elastic force of the compression spring 22 overcomes the elastic force of the coil spring 18 stretched over the fast-forward lever 17 and the arm portion 17c of the fast-forward lever 17 climbs over the top of the projection 7d, the fast-forward lever 17
The elastic force accumulated on the compression spring 22 by the arm portion 17c is released all at once, and the fast-forward lever 17 instantly rotates. Therefore, due to the instantaneous rotational force of the fast-forwarding lever 17, the fast-forwarding gear 20 supported by the fast-forwarding lever 17 is simultaneously engaged with the rewinding gear 8 and the fast-forwarding reel gear 13, and the driving force is The signal is transmitted to the fast-forwarding reel gear 13 via the flywheel gear 1, the gear 6 of the intermediate gear assembly 5, the rewinding gear 8, and the fast-forwarding gear 20, and drives the reel stand 15 to rotate at high speed.
このように、早送りバー24の押圧操作時、巻
戻しレバー7の突起部7dと協働する早送りバー
17の腕部17cによつて蓄積された圧着ばね2
2の弾性力によつて、早送り歯車20が瞬時に早
送りリール歯車13および巻戻し歯車8と噛合す
るので、両歯車相互間での歯車先だけの接触する
時間が極端に少なくなつて、歯先相互の接触時に
生じるノイズが小となると共に、両歯車の摩耗を
も軽減できることになる。 In this way, when the fast forward bar 24 is pressed, the pressure spring 2 accumulated by the arm 17c of the fast forward bar 17 that cooperates with the protrusion 7d of the rewind lever 7 is
Due to the elastic force of 2, the fast forwarding gear 20 instantly meshes with the fast forwarding reel gear 13 and the rewinding gear 8, so the time during which only the tips of the gears are in contact with each other is extremely reduced, and the tips of the teeth are Not only does the noise generated when the gears make contact with each other become smaller, but also the wear of both gears can be reduced.
(2) 巻戻しモード時
第1図Aの状態より巻戻しモードにするには、
同図Cに示す如く、今度は機器の操作部と連結さ
れた巻戻しバー12を図中上方に押圧移動させる
ことによつて行なわれる。(2) In rewind mode To change to rewind mode from the state shown in Figure 1A,
As shown in Figure C, this is done by pressing and moving the rewinding bar 12 connected to the operating section of the device upward in the figure.
巻戻しバー12の押圧操作によつて、これに係
止されている圧着ばね10が所定角度撓んで、こ
れに張架されているコイルばね9に抗して巻戻し
レバー7を軸5aに関してこれに反時計方向に回
動力を付与するものの、上記した如く、巻戻しレ
バー7の一方の腕部7bの突起部7eがが同図C
中二点鎖線で示すように、早送りレバー17の上
側の腕部17bに係止されているためこれ以上の
回動が阻止される。 By pressing the unwinding bar 12, the compression spring 10 locked thereto is bent by a predetermined angle, and the unwinding lever 7 is rotated about the shaft 5a against the coil spring 9 stretched thereon. As mentioned above, the protrusion 7e of one arm 7b of the rewind lever 7 is
As shown by the middle two-dot chain line, the fast-forwarding lever 17 is locked to the upper arm portion 17b, so that further rotation is prevented.
ここで、更に巻戻しバー12を最終的な操作位
置まで押圧すると、この押圧過程で圧着バネ10
の弾性力がコイルばね9の弾性力に抗しつつ腕部
7bの突起部7eが早送りレバー17の腕部17
bの端部上を徐々に乗り上げることにより、巻戻
しレバー7には圧着ばね10の弾性力が蓄積され
る。 Here, when the unwinding bar 12 is further pressed to the final operating position, the compression spring 10 is
While the elastic force of the coil spring 9 resists the elastic force of the coil spring 9, the protrusion 7e of the arm 7b moves the arm 17 of the fast forward lever 17.
The elastic force of the compression spring 10 is accumulated in the rewinding lever 7 by gradually climbing up on the end of the rewinding lever 7.
そこで、巻戻しレバー7に蓄積された上記圧着
バネ10の弾性的回動力が巻戻しレバー7に張架
されたコイルばね9の弾性力に打ち勝つて、巻戻
しレバー7の腕部7bの突起部7eが早送りレバ
ー17の腕部17bの端部を乗り越えると、巻戻
しレバー7の突起部7eによる圧着ばね10に対
する蓄積弾性力が一気に解除され、これによつて
巻戻しレバー7が軸5aに関して瞬時に時計方向
に回動する。この巻戻しレバー7の瞬間的な回動
によつて、これに支持されている巻戻し歯車8
は、駆動歯車と噛合連結されている歯車6上を反
時計方向に添接しながら巻戻しリール歯車14と
瞬時に噛合する。 Therefore, the elastic turning force of the compression spring 10 accumulated in the rewinding lever 7 overcomes the elastic force of the coil spring 9 stretched on the rewinding lever 7, and the protrusion of the arm 7b of the rewinding lever 7 7e gets over the end of the arm 17b of the fast-forwarding lever 17, the elastic force accumulated by the protrusion 7e of the rewinding lever 7 on the compression spring 10 is released all at once, and the rewinding lever 7 is instantaneously moved with respect to the shaft 5a. rotate clockwise. This instantaneous rotation of the rewind lever 7 causes the rewind gear 8 supported by the rewind lever 7 to
The rewinding reel gear 14 instantly meshes with the rewind reel gear 14 while being applied in a counterclockwise direction on the gear 6 which is meshed with the drive gear.
従つて、この巻戻しモード時においても上記早
送りモード時と同様に、巻戻しレバー7と協働す
る早送りレバー17によつて、巻戻しバー12の
押圧操作時、巻戻しレバー7に蓄積された圧着ば
ね10の弾性力によつて、巻戻し歯車8が瞬時に
巻戻しリール歯車14と噛合するので、両歯車相
互間での歯車先だけの接触する時間が極端に少な
くなつて、歯先相互の接触時に生じるノイズが小
となると共に、両歯車の摩耗をも軽減できること
になる。この巻戻しレバー7の瞬間的な回動力に
よつて、巻戻しレバー7に支持された巻戻し歯車
8は、駆動源となるフライホイール歯車1、中間
歯車構体5の歯車6、巻戻し歯車8を介して巻戻
しリール歯車14に伝達され、リール台16を高
速に逆転駆動することになる。 Therefore, in this rewind mode, similarly to the above-mentioned fast forward mode, the fast forward lever 17 that cooperates with the rewind lever 7 allows the rewind bar 12 to be pressed while the rewind bar 12 is pressed. Because the rewinding gear 8 instantly meshes with the rewinding reel gear 14 due to the elastic force of the compression spring 10, the time during which only the tips of the two gears are in contact with each other is extremely reduced. The noise generated when the two gears contact each other is reduced, and the wear of both gears can also be reduced. This instantaneous rotational force of the rewind lever 7 causes the rewind gear 8 supported by the rewind lever 7 to move between the flywheel gear 1 serving as a driving source, the gear 6 of the intermediate gear structure 5, and the rewind gear 8. The signal is transmitted to the unwinding reel gear 14 via the rewinding reel gear 14, and the reel stand 16 is driven reversely at high speed.
(考案の効果)
以上の如く、本考案になるテープレコーダにあ
つては、リール台の早送り時および巻戻し操作時
には、早送りレバーおよび巻戻しレバーに弾性的
な回動力を蓄積させ、これを一気に解除すること
によりそれぞれの駆動歯車が所望の被駆動歯車と
瞬間的に噛合して各歯車相互間に噛合時に生じる
ノイズを極端に軽減すると共に、歯車の相互の摩
耗を防止し、且つリール台の円滑な回転を許容す
るなどの実用的な利点がある。(Effects of the invention) As described above, in the tape recorder according to the invention, when the reel stand is fast-forwarding or rewinding, elastic rotational force is accumulated in the fast-forwarding lever and the rewinding lever, and the elastic rotational force is transferred all at once. By releasing the gears, each drive gear instantly meshes with the desired driven gear, which dramatically reduces the noise generated when the gears mesh with each other, prevents mutual wear of the gears, and improves the reel stand. It has practical advantages such as allowing smooth rotation.
第1図は本考案になるテープレコーダの特徴を
最も良く表わす歯車機構の平面図であり、同図A
は停止時、同図Bは早送り時、同図Cは巻戻し時
の状態をそれぞれ示すものである。
1,2……リール歯車、5……中間歯車構体、
7……巻戻しレバー、8……巻戻し歯車、9,1
8……コイルばね、10,22……圧着ばね、1
3……巻戻しリール歯車、14……早送りリール
歯車、17……早送りレバー。
Figure 1 is a plan view of the gear mechanism that best represents the features of the tape recorder of the present invention;
shows the state when stopped, B shows the state when fast forwarding, and C shows the state when rewinding. 1, 2... Reel gear, 5... Intermediate gear structure,
7...Rewind lever, 8...Rewind gear, 9,1
8...Coil spring, 10, 22...Crimp spring, 1
3...Rewind reel gear, 14...Fast forward reel gear, 17...Fast forward lever.
Claims (1)
する一対の早送りリール歯車13および巻戻しリ
ール歯車14と、 第1の弾性手段9にて回動力が付勢されてお
り、一対のカム部7d,7eを有すると共に前記
巻戻しリール歯車14と選択的に噛合可能な駆動
歯車8を備え、一端部に操作部材12の操作力と
協働して前記第1の弾性手段に抗して回動力を付
勢する第2の弾性手段10を備えた巻戻しレバー
7と、 前記駆動歯車8を回転駆動する駆動機構5と、 第3の弾性手段18にて回動力が付勢されてお
り、前記巻戻しレバー7のカム部7d,7eをそ
れぞれ選択的に係止可能とする一対の係止部17
c,17dを備えると共に前記駆動歯車8および
早送りリール歯車13と噛合可能な早送り歯車2
0を備え、且つ一端部に操作部材24の操作力と
協働して前記第3の弾性手段に抗して回動力を付
勢する第4の弾性手段22を備えた早送りレバー
17とを有してなり、 前記一方の操作部材12による巻戻し時、前記
巻戻しレバー7の前記第1の弾性手段に抗した所
定量の回動によりその他方のカム部7eと前記巻
戻しレバー17の他方の係止部17bとの当接に
より回動力が蓄積され、引続きの操作力により前
記係止部17bが前記カム部7eを乗越えて両者
の当接が解除されることにより、前記蓄積された
回動力により巻戻しレバー7の回動変位に伴なう
駆動歯車8の変位によつて駆動歯車8が前記巻戻
しリール歯車14と噛合する一方、 前記他方の操作部材24の操作による早送り
時、前記早送りレバー17の前記第3の弾性手段
に抗した所定量の回動によりその一方の係止部1
7cと前記カム部7dとの当接により回動力が蓄
積され、引続きの操作力により前記係止部17c
が前記カム部7dを乗越えて両者の当接が解除さ
れることにより、前記蓄積された回動力により早
送りレバー17上の早送り歯車20が早送りリー
ル歯車13および駆動歯車8と同時噛合してなる
テープレコーダ。[Claims for Utility Model Registration] A rotational force is applied by a pair of fast-forwarding reel gears 13 and a rewinding reel gear 14 that rotationally drive a pair of reel stands 15 and 16, respectively, and a first elastic means 9. , a driving gear 8 which has a pair of cam parts 7d and 7e and can selectively mesh with the rewinding reel gear 14, and has one end that cooperates with the operating force of the operating member 12 to provide the first elastic means. The rewinding lever 7 includes a second elastic means 10 that biases rotational force against the rotational force, the drive mechanism 5 rotates the drive gear 8, and the third elastic means 18 applies rotational force. a pair of locking portions 17 that are biased and capable of selectively locking the cam portions 7d and 7e of the rewinding lever 7;
c, 17d, and is capable of meshing with the drive gear 8 and the fast-feeding reel gear 13.
0, and a fast-forwarding lever 17 having a fourth elastic means 22 at one end that cooperates with the operating force of the operating member 24 to urge rotational force against the third elastic means. When rewinding by the one operation member 12, the other cam portion 7e and the other rewind lever 17 are rotated by a predetermined amount of rotation of the rewind lever 7 against the first elastic means. Rotation force is accumulated by the contact with the locking part 17b, and the locking part 17b overcomes the cam part 7e by the subsequent operation force, and the contact between the two is released, so that the accumulated rotation is The drive gear 8 meshes with the rewind reel gear 14 due to the displacement of the drive gear 8 accompanying the rotational displacement of the rewind lever 7 due to power; One of the locking portions 1 is rotated by a predetermined amount of rotation of the fast-forwarding lever 17 against the third elastic means.
7c and the cam portion 7d, a rotational force is accumulated, and a subsequent operating force causes the locking portion 17c to close.
crosses the cam portion 7d and the contact between the two is released, and the accumulated rotational force causes the fast-forwarding gear 20 on the fast-forwarding lever 17 to simultaneously mesh with the fast-forwarding reel gear 13 and the drive gear 8, thereby producing a tape. recorder.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15807784U JPH042426Y2 (en) | 1984-10-19 | 1984-10-19 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15807784U JPH042426Y2 (en) | 1984-10-19 | 1984-10-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6172745U JPS6172745U (en) | 1986-05-17 |
JPH042426Y2 true JPH042426Y2 (en) | 1992-01-28 |
Family
ID=30716061
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15807784U Expired JPH042426Y2 (en) | 1984-10-19 | 1984-10-19 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH042426Y2 (en) |
-
1984
- 1984-10-19 JP JP15807784U patent/JPH042426Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6172745U (en) | 1986-05-17 |
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