JP2514280Y2 - Video camera reel drive - Google Patents
Video camera reel driveInfo
- Publication number
- JP2514280Y2 JP2514280Y2 JP6683691U JP6683691U JP2514280Y2 JP 2514280 Y2 JP2514280 Y2 JP 2514280Y2 JP 6683691 U JP6683691 U JP 6683691U JP 6683691 U JP6683691 U JP 6683691U JP 2514280 Y2 JP2514280 Y2 JP 2514280Y2
- Authority
- JP
- Japan
- Prior art keywords
- gear
- reel
- take
- tape
- video camera
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
- G11B15/43—Control or regulation of mechanical tension of record carrier, e.g. tape tension
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
- G11B15/44—Speed-changing arrangements; Reversing arrangements; Drive transfer means therefor
Landscapes
- Gear Transmission (AREA)
- Transmission Devices (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Description
【0001】[0001]
【産業上の利用分野】本考案は、テープの正方向進行
中、瞬間的にしばしば逆方向進行される小型ビデオカメ
ラのリール駆動装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reel driving device for a small video camera in which a tape is often moved backward in a forward direction during forward movement.
【0002】[0002]
【従来の技術】従来、小型ビデオカメラのリール駆動装
置は、図3及び図4に示す形態であって、テープを巻く
か或いは解く駆動部は、図3に示すように、モーター
(図示せず)より動力を伝えるベルト(1)によって回
転するベルトプーリ(2)と、該ベルトプーリ(2)の
ギヤと噛み合って回転するアイドラギヤ(3)が1つの
支持板(4)に設けられ、この支持板(4)はベルトプ
ーリ(2)の中心軸(5)を回転中心として、両側の供
給リールギヤ(6)と巻き取りリールギヤ(7)との間
を移動するようになっている。2. Description of the Related Art Conventionally, a reel driving device of a small video camera has a form shown in FIGS. 3 and 4, and a driving unit for winding or unwinding a tape is a motor (not shown) as shown in FIG. ) A belt pulley (2) that rotates by a belt (1) that transmits power, and an idler gear (3) that rotates by meshing with the gear of the belt pulley (2) are provided on one support plate (4). The plate (4) is configured to move between the supply reel gear (6) and the take-up reel gear (7) on both sides with the central axis (5) of the belt pulley (2) as the center of rotation.
【0003】従って、支持板(4)が図3の左側に回転
移動して支持板(4)のアイドラギヤ(3)が供給リー
ルギヤ(6)と噛み合う場合は、ベルトプーリ(2)の
動力はベルトプーリギヤ(2)とアイドラギヤ(3)と
供給リールギヤ(6)を通じて供給リール(6)に伝わ
って、供給リール(6)が回転し、一方、支持板(4)
が図3の右側に回転移動した場合は、ベルトプーリのギ
ヤ(2)とアイドラギヤ(3)と巻き取りリールギヤ
(7)を通じて巻き取りリール(7)が回転して、供給
リールと巻き取りリールとの間のテープ(図示せず)を
解くか、或いは巻く。Therefore, when the support plate (4) rotationally moves to the left side in FIG. 3 and the idler gear (3) of the support plate (4) meshes with the supply reel gear (6), the power of the belt pulley (2) is the belt. The supply reel (6) is rotated by being transmitted to the supply reel (6) through the pulley gear (2), the idler gear (3) and the supply reel gear (6), while the support plate (4) is being rotated.
3 rotates to the right side of FIG. 3, the take-up reel (7) rotates through the belt pulley gear (2), the idler gear (3), and the take-up reel gear (7), and the supply reel and the take-up reel are rotated. Unroll or wind the tape (not shown) between them.
【0004】又、小型ビデオカメラは一般のVCR(ビ
デオカセットレコーダ)と違って、巻き取りリールの回
転の制御の為に、巻き取りリールギヤ(7)に、一方向
に回転する回転ギヤ(8)を有する回転ギヤ組立体
(9)を設けて、巻き取りリールギヤ(7)の回転方向
に応じて巻き取りリールの回転の制御を行うようにされ
ている。このように、小型ビデオカメラに回転ギヤ組立
体を設けて巻き取りリールの回転を制御する理由は次の
通りである。Further, unlike a general VCR (video cassette recorder), a small video camera has a take-up reel gear (7) and a rotating gear (8) that rotates in one direction, in order to control the rotation of the take-up reel. Is provided to control the rotation of the take-up reel according to the direction of rotation of the take-up reel gear (7). The reason why the rotation gear assembly is provided in the small video camera to control the rotation of the take-up reel is as follows.
【0005】一般的に、小型ビデオカメラは、使用の特
性のために、継続して撮影の進行又は停止動作を反復遂
行すべきで、その都度、テープが正方向進行と逆方向進
行を反復遂行する。従って、テープの正方向進行と逆方
向進行中、特に、正方向進行中一瞬間逆方向に進行する
とき、即ち、録画進行モードで録画一時停止モードに切
り替わるとき、テープの正方向進行中、一時停止した後
逆方向に僅かに進行して停止状態を維持する場合、テー
プの弾性力が一時無くなった後再び生じるので、逆方向
進行のために供給リールが巻くテープの長さ程巻き取り
リールがテープを解かなくなって、一時的に巻き取りリ
ールがもっと回転して巻くテープの長さより長いテープ
が解かれてテープが緩む。このとき、回転を制御しなが
ら巻き取りリールテープに張力を加える。In general, a small-sized video camera should be continuously and repeatedly photographed or stopped due to its characteristics of use, and the tape is repeatedly forward-moved and backward-moved each time. To do. Therefore, when the tape advances in the forward direction and in the reverse direction, particularly when moving in the reverse direction for a moment during the forward direction, that is, when the recording progress mode is switched to the recording pause mode, the tape progresses in the forward direction and is temporarily stopped. If the tape slightly advances in the reverse direction after it has stopped and remains stopped, the elastic force of the tape temporarily disappears and then reappears. The tape cannot be unwound, and the take-up reel is temporarily rotated more and the tape that is longer than the length of the wound tape is unwound and the tape becomes loose. At this time, tension is applied to the take-up reel tape while controlling the rotation.
【0006】このように、一時的に巻き取りリールがも
っと回転してテープが緩むことを防ぐための回転ギヤ組
立体の構成及び作動について説明する。図4に示すよう
に、回転ギヤ組立体(9)の回転ギヤと巻き取りリール
ギヤ(7)とが噛み合うようにし、回転ギヤ組立体
(9)の円周上の3個所にテーパ孔(10)を形成して
各テーパ孔(10)に円筒型ベアリング(11)を配置
すると共に、テーパ孔(10)の1個所に、ベアリング
(11)に弾性力を加える圧縮スプリング(12)を挾
む。従って、アイドラギヤ(3)が巻き取りリールギヤ
(7)と噛み合うビデオカメラの録画進行モード又はプ
レーモードの場合は、巻き取りリールギヤ(7)が右回
りに回転することによってベアリング(11)はテーパ
孔(10)の広い幅側に移動するので、一方向回転ギヤ
(8)は妨げられなく回転して巻き取りリールギヤ
(7)も回転する。The structure and operation of the rotary gear assembly for temporarily preventing the take-up reel from further rotating and loosening the tape will be described below. As shown in FIG. 4, the rotary gear of the rotary gear assembly (9) and the take-up reel gear (7) are engaged with each other, and taper holes (10) are provided at three locations on the circumference of the rotary gear assembly (9). And a cylindrical bearing (11) is arranged in each tapered hole (10), and a compression spring (12) that applies an elastic force to the bearing (11) is sandwiched at one position of the tapered hole (10). Therefore, when the idler gear (3) meshes with the take-up reel gear (7) in the recording progress mode or play mode of the video camera, the take-up reel gear (7) rotates clockwise to cause the bearing (11) to have a tapered hole ( Since it moves to the wider side of 10), the one-way rotating gear (8) rotates unhindered and the winding reel gear (7) also rotates.
【0007】この状態で、逆方向進行モードであるリビ
ュー(review)モード又は録画一時停止のための
わずかの逆方向進行モードを行う場合は、アイドラギヤ
(3)が供給リールギヤ(6)と噛み合って供給リール
を左回りに回転させ、これによってカセットタブ(図示
せず)を経て巻き取りリールを左回りに回転させるが、
回転ギヤ組立体(9)の一方向回転ギヤ(8)は巻き取
りリールの回転方向の逆方向である右回りに回転しよう
とすることによってベアリング(11)がテーパ孔(1
0)の狭い幅側に移動するので、回転ギヤ(8)の回転
を妨げる。従って、回転ギヤ(8)と噛み合っている巻
き取りリールギヤ(7)も回転せず、巻き取りリール
(14)のみが回転しながら巻き取りリール(14)と
巻き取りリールギヤ(7)との間に設けられた摩擦クラ
ッチ(13)によって摩擦力を受けて巻き取りリール
(14)に掛けられたテープが張り切ってテープの緩み
を防ぐ。In this state, when the review mode, which is the reverse traveling mode, or the slight reverse traveling mode for temporarily stopping the recording, is performed, the idler gear (3) meshes with the supply reel gear (6) to supply. Rotate the reel counterclockwise, which causes the take-up reel to rotate counterclockwise through the cassette tab (not shown),
The unidirectional rotary gear (8) of the rotary gear assembly (9) tries to rotate in the clockwise direction, which is the opposite direction of the rotation direction of the take-up reel, so that the bearing (11) is tapered.
Since it moves to the narrow side of 0), the rotation of the rotary gear (8) is hindered. Therefore, the take-up reel gear (7) meshing with the rotating gear (8) also does not rotate, and only the take-up reel (14) rotates while the take-up reel (14) is between the take-up reel (14) and the take-up reel gear (7). By the friction clutch (13) provided, the tape wound on the take-up reel (14) is stretched by receiving frictional force to prevent the tape from loosening.
【0008】[0008]
【考案が解決しようとする課題】しかし、前述したよう
な従来の装置は、回転ギヤ組立体の構造が複雑であるか
ら多数の部品が必要になって、製造コストの上昇と製品
の重量化の問題があった。本考案は、このような従来の
問題点を解決するために、リール駆動装置の構造を改善
して、テープの走行方向の変更時簡単な構成部品で従来
の回転ギヤ組立体のようにテープの緩みを防ぐ機能を有
効に行うことを目的とする。However, in the conventional device as described above, since the structure of the rotary gear assembly is complicated, a large number of parts are required, which increases the manufacturing cost and increases the weight of the product. There was a problem. In order to solve the above-mentioned conventional problems, the present invention improves the structure of the reel driving device so that when changing the running direction of the tape, the tape can be formed with simple components like the conventional rotary gear assembly. The purpose is to effectively perform the function of preventing loosening.
【0009】[0009]
【課題を解決するための手段】上記の目的を達成するた
めの本考案の装置は、アイドラギヤが供給リールギヤと
巻き取りリールギヤとの間で移動しながら前記供給リー
ルギヤと巻き取りリールギヤへの動力伝達を断続するビ
デオカメラのリール駆動装置において、前記巻き取りリ
ールギヤと噛み合う一方向回転ギヤを設け、前記アイド
ラギヤ側の支持板にストッパを突設して、テープの逆方
向進行時前記ストッパが前記回転ギヤと噛み合って前記
巻き取りギヤの回転を停止させるようにしたものであ
る。SUMMARY OF THE INVENTION In order to achieve the above object, the device of the present invention transmits power to the supply reel gear and the take-up reel gear while the idler gear moves between the supply reel gear and the take-up reel gear. In a reel driving device of an intermittent video camera, a one-way rotating gear that meshes with the take-up reel gear is provided, and a stopper is provided on a support plate on the idler gear side so that the stopper is the rotating gear when the tape moves in the reverse direction. The rotation of the winding gear is stopped by meshing with each other.
【0010】[0010]
【実 施 例】次に、本考案のビデオカメラのリール駆
動装置を添付図面に基づいて説明する。図1は本考案の
リール駆動装置を示す平面図であり、動力を伝達するベ
ルト(1)によって、ベルトプーリ(2)のギヤが回転
し、これによって、ベルトプーリ(2)のギヤと噛み合
っているアイドラギヤが設けられた支持板(4)の移動
によってアイドラギヤ(3)が供給リールギヤ(6)又
は巻き取りリールギヤ(7)と噛み合って供給リール又
は巻き取りリールを回転させてテープを巻くか或いは解
く基本的な作動は従来と同じであるが、本考案において
は、支持板(4)の下端部に、端末部が突起(20a)
の形状を有するストッパ(20)を突設して、アイドラ
ギヤ(3)が供給リールギヤ又は巻き取りリールギヤ
(7)と噛み合うようにするために支持板(4)の移動
と共にストッパ(20)も支持板(4)の回転方向に回
転することになる。併せて、ストッパ(20)と巻き取
りリールギヤ(7)との間に巻き取りリールギヤ(7)
と噛み合う一方向ギヤ(21)を設ける。EXAMPLES Next, a reel driving device for a video camera of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a plan view showing a reel driving device of the present invention, in which a belt (1) for transmitting power rotates a gear of a belt pulley (2), which meshes with a gear of the belt pulley (2). By moving the support plate (4) provided with an idler gear, the idler gear (3) meshes with the supply reel gear (6) or the take-up reel gear (7) to rotate the supply reel or the take-up reel to wind or unwind the tape. Although the basic operation is the same as the conventional one, in the present invention, the end portion is a protrusion (20a) at the lower end of the support plate (4).
A stopper (20) having the shape of the above is provided so that the idler gear (3) is engaged with the supply reel gear or the take-up reel gear (7) so that the stopper (20) also moves along with the movement of the support plate (4). It rotates in the rotation direction of (4). At the same time, the take-up reel gear (7) is provided between the stopper (20) and the take-up reel gear (7).
A one-way gear (21) that meshes with is provided.
【0011】[0011]
【考案の作用】従って、図1に示すように、支持板
(4)の停止状態、即ち、アイドラギヤ(3)が供給リ
ールギヤ(6)と巻き取りリールギヤ(7)とのいずれ
とも噛み合わない状態で、ストッパ(20)は一方向ギ
ヤから離れており、この状態からプレー状態になって、
アイドラギヤ(3)が巻き取りリールギヤ(7)側に移
動すればストッパ(20)は一方向ギヤ(21)からも
っと離れることによって一方向ギヤ(21)と巻き取り
リールギヤ(7)は自由に回転する。Therefore, as shown in FIG. 1, when the support plate (4) is stopped, that is, when the idler gear (3) does not mesh with either the supply reel gear (6) or the take-up reel gear (7). , The stopper (20) is separated from the one-way gear, and from this state, it becomes the play state,
When the idler gear (3) moves to the take-up reel gear (7) side, the stopper (20) moves further away from the one-way gear (21), so that the one-way gear (21) and the take-up reel gear (7) rotate freely. .
【0012】一方、リビュー状態になって、アイドラギ
ヤ(3)が図1の左側に回転移動しして供給リールギヤ
(6)と噛み合えば、図1に2点鎖線で示すように、ス
トッパ(20)は図面の右側に移動してストッパ(2
0)の突起(20a)が一方向回転ギヤ(21)の歯と
噛み合って一方向回転ギヤ(21)の回転を防ぐので、
巻き取りリールギヤ(7)も回転せず、図2に示すよう
に巻き取りリール(14)のみが摩擦クラッチ(13)
によって摩擦力を受けてテープに張力を加えてテープの
緩みを防ぎながら回転することになる。On the other hand, when the idler gear (3) is rotationally moved to the left side in FIG. 1 and meshes with the supply reel gear (6) in the review state, as shown by a two-dot chain line in FIG. ) Moves to the right side of the drawing and stops (2
The protrusion (20a) of (0) meshes with the teeth of the unidirectional rotary gear (21) to prevent the unidirectional rotary gear (21) from rotating,
The take-up reel gear (7) also does not rotate, and as shown in FIG. 2, only the take-up reel (14) has a friction clutch (13).
As a result, the tape is rotated by receiving frictional force and applying tension to the tape to prevent the tape from loosening.
【0013】[0013]
【考案の効果】このように、本考案は供給リールと巻き
取りリールに動力を伝えるアイドラギヤの移動方向と逆
方向に移動するストッパによって巻き取りリールギヤと
噛み合って回転する一方向ギヤの回転を制御するから、
テープの走行方向変更時、一時的にテープが緩むことを
防ぐので、従来の装置と比べて部品数の減少と部品の軽
量化によって製造コストの節減と製品の軽量化が達成出
来る。As described above, according to the present invention, the rotation of the one-way gear that meshes with the take-up reel gear is controlled by the stopper that moves in the direction opposite to the moving direction of the idler gear that transmits power to the supply reel and the take-up reel. From
When changing the running direction of the tape, the tape is prevented from loosening temporarily, so that the number of parts can be reduced and the weight of the parts can be reduced as compared with the conventional device, thereby reducing the manufacturing cost and the weight of the product.
【図1】本考案のリール駆動装置を示す平面図である。FIG. 1 is a plan view showing a reel driving device of the present invention.
【図2】本考案の作動状態を示す断面図である。FIG. 2 is a sectional view showing an operating state of the present invention.
【図3】従来のリール駆動装置を示す平面図である。FIG. 3 is a plan view showing a conventional reel driving device.
【図4】図3の線A−Aについての断面図及び回転ギヤ
組立体の平面図である。4 is a cross-sectional view taken along the line AA of FIG. 3 and a plan view of the rotary gear assembly.
3 アイドラギヤ、4 支持板、6 供給リールギヤ、
7 巻き取りリールギヤ、20 ストッパ、21 一方
向ギヤ。3 idler gears, 4 support plates, 6 supply reel gears,
7 Take-up reel gear, 20 Stopper, 21 Unidirectional gear.
Claims (1)
ドラギヤが供給リールギヤと巻き取りリールギヤとの間
で移動しながら供給リールギヤと巻き取りリールギヤへ
の動力伝達を断続するビデオカメラのリール駆動装置に
おいて、前記巻き取りリールギヤと噛み合う一方向回転
ギヤを設け、前記アイドラギヤの支持板にストッパを突
設して、テープの逆方向進行時、前記ストッパが前記一
方向回転ギヤと噛み合って前記巻き取りリールギヤの回
転を防ぐことを特徴とするビデオカメラのリール駆動装
置。1. A reel drive device for a video camera, wherein an idler gear which receives power from a motor to rotate rotates intermittently while transmitting power to the supply reel gear and the take-up reel gear while moving between the supply reel gear and the take-up reel gear. the one-way rotary gear provided meshing with the take-up reel gear, and projecting the stopper supporting plate of the idler gear, the reverse traveling of the tape, the rotation of the take-up reel gear the stopper is engaged with said one-way rotation gear A reel drive device for a video camera, which is characterized by preventing
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1990U11213 | 1990-07-30 | ||
KR2019900011213U KR930000487Y1 (en) | 1990-07-30 | 1990-07-30 | Reel driving method for camcorder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0490029U JPH0490029U (en) | 1992-08-06 |
JP2514280Y2 true JP2514280Y2 (en) | 1996-10-16 |
Family
ID=19301598
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6683691U Expired - Fee Related JP2514280Y2 (en) | 1990-07-30 | 1991-07-30 | Video camera reel drive |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP2514280Y2 (en) |
KR (1) | KR930000487Y1 (en) |
DE (1) | DE4125081C2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0913676A (en) * | 1995-06-30 | 1997-01-14 | Max Co Ltd | Driving gear switching mechanism in reinforcement binding machine |
-
1990
- 1990-07-30 KR KR2019900011213U patent/KR930000487Y1/en not_active IP Right Cessation
-
1991
- 1991-07-29 DE DE19914125081 patent/DE4125081C2/en not_active Expired - Fee Related
- 1991-07-30 JP JP6683691U patent/JP2514280Y2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR930000487Y1 (en) | 1993-02-05 |
JPH0490029U (en) | 1992-08-06 |
DE4125081A1 (en) | 1992-03-05 |
DE4125081C2 (en) | 1995-01-05 |
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