JPS6386135A - Tape driving mechanism - Google Patents
Tape driving mechanismInfo
- Publication number
- JPS6386135A JPS6386135A JP61231753A JP23175386A JPS6386135A JP S6386135 A JPS6386135 A JP S6386135A JP 61231753 A JP61231753 A JP 61231753A JP 23175386 A JP23175386 A JP 23175386A JP S6386135 A JPS6386135 A JP S6386135A
- Authority
- JP
- Japan
- Prior art keywords
- gear
- tape
- high speed
- output gear
- driving
- 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.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 description 9
- 230000001360 synchronised effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
この発明はテープレコーダやビデオチープレレコーダ（
ＶＴＲ）等の磁気記録再生装置に係り、特にそのテープ
駆ａ ［構の改良に関する。[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) This invention is applicable to tape recorders and video cheap recorders (
The present invention relates to magnetic recording and reproducing devices such as VTRs, and particularly to improvements in the tape drive structure thereof.
（従来の技術）
一般に、ＶＴＲにおいては、そのテープ再生及び記録時
の定速走行モードと早送り及び巻戻し時等の高速走行モ
ードに応じてテープ走行系がテープ定速及び高速走行状
態に切換ｔＩＩＩＩＩｌされる。そして、このようなテ
ープ走行系の切換手段としては、通常クラッチ機構を用
いてテープ定速及び高速走行状態に切換制御されるテー
プ駆動改構が備えられている。(Prior Art) Generally, in a VTR, the tape running system switches between a constant speed tape running state and a high speed running state depending on the constant speed running mode during tape playback and recording and the high speed running mode such as fast forwarding and rewinding. be done. As a switching means for such a tape running system, a modified tape drive mechanism is usually provided which uses a clutch mechanism to control switching between a constant tape speed and a high speed tape running state.
第２図はこのようなテープ駆動１構を示すもので、図中
１０はメインシャーシである。このメインシャーシ１０
の中央上部には図示しない回転ヘッドの搭載されるシリ
ンダ１１が配設され、シリンダ１１にはカセット収容部
に収容されたカセット１２に巻装された磁気テープが図
示しないローディングｔｉ構によりテープローディング
されて装架される。また、メインシャーシ１０の略中央
部には一対のリール台１３．１４が軸１３ａ。FIG. 2 shows one structure of such a tape drive, and numeral 10 in the figure is a main chassis. This main chassis 10
A cylinder 11 on which a rotating head (not shown) is mounted is disposed at the upper center of the cylinder 11, and a magnetic tape wound around a cassette 12 housed in a cassette storage section is loaded onto the cylinder 11 by a loading mechanism (not shown). It will be mounted on the mount. Furthermore, a pair of reel stands 13, 14 are mounted on shafts 13a approximately in the center of the main chassis 10.
１４ａを介して回転自在に配設され、これらリール台１
３．１４にはそれぞれ歯車１５，１６が−体向に形成さ
れる。そして、これらリール台１３゜１４の中間部には
いずれか一方の歯車１５（１６）に歯合される伝達歯車
１７が配置される。この伝達歯車１７は連結部材１８の
一端に回転自在に支持され、この連結部材１８の他端は
第３図に示すようにサブシャーシ２０に植設された軸１
９に対して回動自在に支持される。なお、図示しないが
サブシャーシ２０はその両端がメインシャーシ１０方向
に折曲され、各先端がメインシャーシ１０に固定されて
いる。また、この軸１９にはテープ走行切換駆動用の原
動歯車１が回転自在に支持される。この原動歯車１は例
えば第４図に示すようにその一端部に歯付きプーリ２１
が一体的に形成され、その他端部にはばね部材２２を介
してクラッチ板２３．フェルト等の摩擦部材２４．出力
歯車２．フェルト等の摩擦部材２５が取付は部材２６を
用いて順に積重して取着されてクラッチ機構が構成され
る。そして、このうち出力歯１１２には上記伝達歯車１
７が噛合され、原動歯車１の歯付きプーリ２１には例え
ば歯付きベルト２７の一端が巻掛けられる。そして、上
記原動歯車１及び出力歯車２にはクラッチ切換制御用の
同期歯車２８が接離自在に配設される。この同期歯車２
８はレバー２９の一端に軸２８ａを介して回動自在に支
持され、このレバー２９は図示しないモード切換機構に
連動して矢印Ａ、Ｂ方向に回動付勢されて上記原動歯車
１及び出力歯車２に接離される。These reel stands 1
3.14, gears 15 and 16 are formed in the negative direction, respectively. A transmission gear 17 meshed with one of the gears 15 (16) is arranged in the middle of the reel stands 13 and 14. This transmission gear 17 is rotatably supported by one end of a connecting member 18, and the other end of this connecting member 18 is connected to a shaft 1 installed in a sub-chassis 20 as shown in FIG.
It is rotatably supported with respect to 9. Although not shown, both ends of the sub-chassis 20 are bent toward the main chassis 10, and each tip is fixed to the main chassis 10. Further, a driving gear 1 for driving tape running switching is rotatably supported on this shaft 19. For example, as shown in FIG. 4, this driving gear 1 has a toothed pulley 21 at one end thereof.
are integrally formed, and a clutch plate 23 . is connected to the other end via a spring member 22 . Friction member 24, such as felt. Output gear 2. Friction members 25 such as felt are attached using members 26 in a stacked manner to form a clutch mechanism. Of these, the output tooth 112 has the above-mentioned transmission gear 1.
7 are meshed with each other, and one end of a toothed belt 27, for example, is wound around the toothed pulley 21 of the driving gear 1. A synchronizing gear 28 for clutch switching control is disposed on the driving gear 1 and the output gear 2 so as to be able to come into contact with and separate from the driving gear 1 and the output gear 2. This synchronous gear 2
8 is rotatably supported at one end of a lever 29 via a shaft 28a, and this lever 29 is rotatably biased in the directions of arrows A and B in conjunction with a mode switching mechanism (not shown) to switch between the driving gear 1 and the output. The gear 2 is brought into contact with and separated from the gear 2.
また、上記メインシャーシ１０にはシリンダ１１の出口
側のテープバス上にキャプスタン３０がピンチローラ３
１に対応して配設され、その基部には図示しない駆動源
から駆動力が伝達されるフライホイール３２が同軸的に
形成される。そして、このフライホイール３２には同軸
的に駆動歯車３３が形成され、この駆動歯車３３には中
継歯車３４が噛合される。この中継歯車３４には例えば
歯付きプーリ３５が形成され、この歯付きプーリ３５に
は上記原動歯車１の歯付きプーリ２１に巻掛けられた歯
付きベルト２７の他端が巻掛けられる。Further, in the main chassis 10, a capstan 30 is mounted on the tape bus on the outlet side of the cylinder 11, and a pinch roller 3 is mounted on the main chassis 10.
1, and a flywheel 32 is coaxially formed at its base to which a driving force is transmitted from a driving source (not shown). A drive gear 33 is coaxially formed on the flywheel 32, and a relay gear 34 is meshed with the drive gear 33. For example, a toothed pulley 35 is formed on the relay gear 34, and the other end of the toothed belt 27, which is wound around the toothed pulley 21 of the drive gear 1, is wound around the toothed pulley 35.
上記構成により、テープ定速走行時にはモード切換ｄ構
（図示せず）によりレバーが矢印Ｂ方向に回動付勢され
て同期歯車２８が原動歯車１及び出力歯車２から離間さ
れる。これにより、駆動歯車３３の回転力は中継歯車３
４．歯付きベルト１７を介して原動歯車１に伝達された
後、クラッチ機構を介して出力歯車２に伝達され、その
回転方向に応じて伝達歯車１７を図中時計あるいは反時
計方向に定速で回転駆動させる。すると、この伝達歯車
１７はその回転に連動して、首撮り部材２０により連結
部材１８とともに図中時計あるいは反時計方向に回動さ
れてリール台１３．１４の歯車１５．１６の一方に噛合
され、リール台１３゜１４の一方を定速で回転駆動して
テープ定速走行を行ないせしめる。With the above configuration, when the tape is traveling at a constant speed, the mode switching mechanism (not shown) rotates the lever in the direction of arrow B, and the synchronizing gear 28 is separated from the driving gear 1 and the output gear 2. As a result, the rotational force of the drive gear 33 is transferred to the relay gear 3.
4. After being transmitted to the driving gear 1 via the toothed belt 17, it is transmitted to the output gear 2 via the clutch mechanism, and depending on the rotation direction, the transmission gear 17 is rotated at a constant speed clockwise or counterclockwise in the figure. drive. Then, in conjunction with the rotation, the transmission gear 17 is rotated clockwise or counterclockwise in the drawing together with the connecting member 18 by the head capture member 20, and meshed with one of the gears 15.16 of the reel stand 13.14. , one of the reel stands 13 and 14 is driven to rotate at a constant speed to cause the tape to travel at a constant speed.
また、テープ高速走行時には上記モード切換機構（図示
せず）が作動されてテープ走行系が高速走行状態に切換
られると、該モード切換機構（図示せず）によりレバー
２９が矢印入方向に回動付勢されて同期歯車２８が原動
歯車１及び出力歯車２に噛合される。これにより、駆動
歯車３３の回転力は中継歯車３４．歯付きベルト２７を
介して原動歯車１及び出力歯車２に伝達され、その回転
方向に応じて伝達歯車１７を直接的に図中時計あるいは
反時計方向に高速で回転駆動させる。すると、この伝達
歯車１７はその回転に連動して、首娠り部材２０により
連結部材１８とともに図中時計あるいは反時計方向に回
動されてリール台１３゜１４の歯車１５．１６の一方に
噛合され、リール台１３．１４の一方を高速で回転駆動
してテープ高速走行を行ないせしめる。When the tape is running at high speed, when the mode switching mechanism (not shown) is activated and the tape running system is switched to a high speed running state, the lever 29 is rotated in the direction of the arrow by the mode switching mechanism (not shown). The synchronous gear 28 is energized and meshes with the driving gear 1 and the output gear 2. As a result, the rotational force of the drive gear 33 is transferred to the relay gear 34. It is transmitted to the drive gear 1 and the output gear 2 via the toothed belt 27, and depending on the rotation direction thereof, the transmission gear 17 is directly driven to rotate clockwise or counterclockwise in the figure at high speed. Then, in conjunction with the rotation, the transmission gear 17 is rotated clockwise or counterclockwise in the drawing together with the connecting member 18 by the neck member 20, and meshes with one of the gears 15 and 16 of the reel base 13 and 14. Then, one of the reel stands 13 and 14 is driven to rotate at high speed to cause the tape to run at high speed.
ところが、上記テープ駆動機構では、その構成上、原動
歯車１及び出力歯Ｉｉ２に対して同期歯車２８が噛合さ
れる際に、同期歯車２８の歯先と原動歯１１１及び出力
歯車２の各歯先が衝突していわゆるロックされたりして
、スムーズに噛合わないために、モード切換動作がスム
ーズに行われず、正確にして迅速なモード切換制御に支
障を来たすという不具合あった。However, in the above tape drive mechanism, due to its configuration, when the synchronous gear 28 is meshed with the driving gear 1 and the output tooth Ii2, the tooth tips of the synchronous gear 28 and the tips of each of the driving teeth 111 and the output gear 2 This causes a problem in that the mode switching operation cannot be performed smoothly and accurate and quick mode switching control is hindered because the two do not mesh smoothly due to collision and so-called locking.
（発明が解決しようとする問題点）
この発明は上記の正確な噛合動作が行われない点を解決
するためになされたもので、簡易な構成で、しかも正確
な噛合動作を行ない（ｑるようにして、モード切換動作
の確実化を図り１ｑるようにしたテープ駆動機構を提供
することを目的とする。(Problems to be Solved by the Invention) This invention was made in order to solve the above-mentioned problem that the accurate meshing operation is not performed. It is an object of the present invention to provide a tape drive mechanism in which the mode switching operation is ensured.
［発明の構成］
（問題点を解決するため手段）
この発明はクラッチ機構を介して同軸的に設けられたモ
ジュール及び歯数が同じで歯たけの異なる第１及び第２
の歯車と、この第１及び第２の歯車の一方を回転駆動す
る駆動手段と、前記第１及び第２の歯車の他方に噛合さ
れ一対のリール台の一方を選択的に回転駆動してテープ
走行せしめる第３の歯車と、前記第１及び第２の歯車に
対して選択的に噛合して前記第３の歯車を高速で回転駆
動させる第４の歯車とを備えることを特徴とするもので
ある。[Structure of the Invention] (Means for Solving the Problems) This invention provides a first and a second module coaxially provided via a clutch mechanism, and first and second modules having the same number of teeth but different tooth depths.
a gear, a driving means for rotationally driving one of the first and second gears, and selectively driving one of the pair of reel stands meshed with the other of the first and second gears to rotate the tape. It is characterized by comprising a third gear that causes the gear to travel, and a fourth gear that selectively meshes with the first and second gears and drives the third gear to rotate at high speed. be.
（作用）
上記構成により、第１及び第２の歯車に対して第４の歯
車を所定の間隔を有して噛合されるようにして歯先の衝
突を確実に防止して、スムーズな噛合を可能せしめたも
のである。(Function) With the above configuration, the fourth gear is meshed with the first and second gears with a predetermined interval, thereby reliably preventing collision of the tooth tips and ensuring smooth meshing. It made it possible.
（実施例）
以下、この発明の実施例について、図面を参照して詳細
に説明する。(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
第１図はこの発明に係るテープ駆動機構の原動歯１４０
及び出力歯車４１を示すもので、その他の部分について
は前述した第２図乃至第４図と同様に構成されるが、原
動歯車４０と出力歯車４１の噛合動作に時間的差をもた
せる構造としたことに特徴を有する。すなわち、原動歯
車４０及び出力歯車４１はその歯数及びモジュールが同
じに形成され、その歯だけだけが例えば原動歯車４０の
歯たけｈｌに比して出力歯車４１の歯たけｈ２が６６寸
法だけ短く形成される。FIG. 1 shows a driving tooth 140 of a tape drive mechanism according to the present invention.
and an output gear 41, and the other parts are constructed in the same manner as in FIGS. 2 to 4 described above, but the structure is such that a time difference is created between the meshing operations of the driving gear 40 and the output gear 41. It has particular characteristics. That is, the driving gear 40 and the output gear 41 are formed to have the same number of teeth and the same module, and only those teeth have a tooth height h2 of the output gear 41 that is shorter by 66 dimensions than the tooth height hl of the driving gear 40. It is formed.
しかして、上記テープ駆動機構はテープ高速走行に切換
られる際、同期歯車２８がレバー２９を介して矢印へ方
向に回動されると、先ず原動歯車４０に噛合された後、
若干の時間を経て出力歯車４１に噛合され、該原動歯車
４０と出力歯車４１を直結する。これにより、出力歯車
４１は前述したように伝達歯車１７を高速で回転駆動し
てリール台１３．１４の一方を高速で回転駆動してテー
プ高速走行を行ないせしめる。Therefore, when the tape drive mechanism is switched to high-speed tape running, when the synchronizing gear 28 is rotated in the direction of the arrow via the lever 29, it is first engaged with the driving gear 40, and then
After some time, it meshes with the output gear 41, and the driving gear 40 and the output gear 41 are directly connected. As a result, the output gear 41 rotates the transmission gear 17 at high speed, as described above, and drives one of the reel stands 13 and 14 to rotate at high speed, thereby causing the tape to run at high speed.
また、上記同期歯車２８は上述したテープ高速走行位置
からレバー２９を介して矢印Ｂ方向に回動されると、先
ず上述した噛合動作と略逆に出力歯車４１より離脱した
後、若干の時間を経て原動歯車４０からＩｌ！１！１５
２される。Furthermore, when the synchronizing gear 28 is rotated in the direction of arrow B via the lever 29 from the above-mentioned high-speed tape running position, it first disengages from the output gear 41 in substantially the opposite manner to the above-mentioned meshing operation, and then takes some time. Then from the driving gear 40 to Il! 1!15
2 will be given.
このように、上記テープ駆動機構は原動歯車４０及び出
力歯車４１に対して同期歯車２８が所定の時間差を有し
て同時噛合するように構成したので、一対の原動歯車４
０及び出力歯車４１に対する噛合が極めてスムーズに行
われることで、可及的に迅速にして正確なモード切換動
作が可能となる。In this way, the tape drive mechanism is configured such that the synchronizing gear 28 meshes with the driving gear 40 and the output gear 41 at the same time with a predetermined time difference.
Since the meshing with the output gear 41 and the output gear 41 is extremely smooth, mode switching operations can be performed as quickly and accurately as possible.
なお、この発明は上記実施例では、原動歯車４０の歯た
けｈｌに比して出力歯車４１の歯たけｈ２を△ｄ寸法だ
け短くして噛合に時間差をもたせるように構成した場合
で説明したが、これに限ることなく、原ａ歯車４０の歯
たけｈｌを出力歯車４１の歯たけｈ２に比して短く形成
することも可能である。In the above embodiment, this invention has been described in a case where the tooth height h2 of the output gear 41 is shortened by the dimension Δd compared to the tooth height hl of the driving gear 40 to provide a time difference in meshing. However, the present invention is not limited to this, and it is also possible to form the tooth height hl of the original A gear 40 to be shorter than the tooth height h2 of the output gear 41.
［発明の構成］
以上詳述したように、この発明によれば、簡易な構成で
、しかも正確な噛合動作を行ない得るようにして、モー
ド切換動作の確実化を図り得るようにしたテープ駆動機
構を提供することができる。[Structure of the Invention] As described in detail above, according to the present invention, there is provided a tape drive mechanism which has a simple structure and is capable of performing accurate meshing operation to ensure reliable mode switching operation. can be provided.
第１図はこの発明の一実施例に係るテープ駆動機構の要
部を示す構成説明図、第７図乃至第４図はそれぞれ従来
のテープ駆ｖＪ殿構を説明するために示した構成図であ
る。
１０・・・メインシャーシ、１１・・・シリンダ、１２
・・・カセット、１３．１４・・・リール台、１５．１
６・・・歯車、１７・・・伝達歯車、１８・・・連結部
材、１９・・・軸、２ｏ・・・・・・首振り部材、２１
・・・歯付きプーリ、２２・・・ばね部材、２３・・・
クラッチ板、２４．２５・・・摩擦部材、２６・・・取
付は部材、２７・・・歯付きベルト、２８・・・同期歯
車、２９・・・レバー、３０・・・キャプスタン、３１
・・・ピンチローラ、３２・・・フライホイール、３３
・・・駆動歯車、３４・・・中継歯車、３５・・・歯付
きプーリ、４ｏ・・・原動歯車、４１・・・出力歯車。FIG. 1 is a configuration explanatory diagram showing the main parts of a tape drive mechanism according to an embodiment of the present invention, and FIGS. 7 to 4 are configuration diagrams shown to explain the conventional tape drive mechanism. be. 10... Main chassis, 11... Cylinder, 12
...Cassette, 13.14...Reel stand, 15.1
6... Gear, 17... Transmission gear, 18... Connecting member, 19... Shaft, 2o... Oscillating member, 21
...Toothed pulley, 22...Spring member, 23...
Clutch plate, 24.25...Friction member, 26...Mounting member, 27...Toothed belt, 28...Synchronous gear, 29...Lever, 30...Capstan, 31
... Pinch roller, 32 ... Flywheel, 33
... Drive gear, 34... Relay gear, 35... Toothed pulley, 4o... Driving gear, 41... Output gear.
Claims (1)
び歯数が同じで歯たけの異なる第１及び第２の歯車と、
この第１及び第２の歯車の一方を回転駆動する駆動手段
と、前記第１及び第２の歯車の他方に噛合され一対のリ
ール台の一方を選択的に回転駆動してテープ走行せしめ
る第３の歯車と、前記第１及び第２の歯車に対して選択
的に噛合して前記第３の歯車を高速で回転駆動させる第
４の歯車とを具備したことを特徴とするテープ駆動機構
。A module coaxially provided via a clutch mechanism, and first and second gears having the same number of teeth and different tooth depths;
A third drive means that rotationally drives one of the first and second gears, and a third drive means that is meshed with the other of the first and second gears and selectively drives one of the pair of reel stands to rotate the tape. and a fourth gear that selectively meshes with the first and second gears to rotate the third gear at high speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61231753A JPS6386135A (en) | 1986-09-30 | 1986-09-30 | Tape driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61231753A JPS6386135A (en) | 1986-09-30 | 1986-09-30 | Tape driving mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6386135A true JPS6386135A (en) | 1988-04-16 |
Family
ID=16928494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61231753A Pending JPS6386135A (en) | 1986-09-30 | 1986-09-30 | Tape driving mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6386135A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0638017U (en) * | 1992-10-28 | 1994-05-20 | 船井電機株式会社 | Clutch mounting structure for magnetic recording / reproducing device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6056936B2 (en) * | 1977-05-10 | 1985-12-12 | 日本発条株式会社 | non-contact spiral spring |
| JPS61199259A (en) * | 1985-02-28 | 1986-09-03 | Olympus Optical Co Ltd | Reel shaft driving mechanism |
-
1986
- 1986-09-30 JP JP61231753A patent/JPS6386135A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6056936B2 (en) * | 1977-05-10 | 1985-12-12 | 日本発条株式会社 | non-contact spiral spring |
| JPS61199259A (en) * | 1985-02-28 | 1986-09-03 | Olympus Optical Co Ltd | Reel shaft driving mechanism |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0638017U (en) * | 1992-10-28 | 1994-05-20 | 船井電機株式会社 | Clutch mounting structure for magnetic recording / reproducing device |
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