JPS6163901A - Arm driver - Google Patents

Arm driver

Info

Publication number
JPS6163901A
JPS6163901A JP18672684A JP18672684A JPS6163901A JP S6163901 A JPS6163901 A JP S6163901A JP 18672684 A JP18672684 A JP 18672684A JP 18672684 A JP18672684 A JP 18672684A JP S6163901 A JPS6163901 A JP S6163901A
Authority
JP
Japan
Prior art keywords
magnet
arm
winding
turning
pickup arm
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
Application number
JP18672684A
Other languages
Japanese (ja)
Inventor
Seizo Miyoshi
清三 三好
Tetsuo Maeda
哲男 前田
Kazuya Okabe
和也 岡部
Hiroyuki Takayama
浩之 高山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP18672684A priority Critical patent/JPS6163901A/en
Publication of JPS6163901A publication Critical patent/JPS6163901A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/02—Arrangements of heads
    • G11B3/08—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers
    • G11B3/085—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers using automatic means
    • G11B3/08503—Control of drive of the head
    • G11B3/08506—Control of drive of the head for pivoting pick-up arms
    • G11B3/08516—Control of drive of the head for pivoting pick-up arms using magnetic detecting means

Abstract

PURPOSE:To move up and down and turn a pickup arm with a simple constitution by combining an annular up-down coil and an oval turning coil opposite in terms of plane to a discoid magnet which is N-S magnetized on a plane. CONSTITUTION:When a turning drive winding 17 is energized, a magnet 14 turns while receiving the speed control from a turning speed detecting winding 18. While a pickup arm 1 turns by an angle theta in the a-b direction centering on a vertical shaft 2. When an up-down drive winding 19 is energized, the magnet 14 moves up and down while receiving the speed control from an up-down speed detecting winding 20. Therefore an arm part 22a of a lift plate 22 is moved up and down in the c-d direction along the lower side surface of the arm 1. Thus the arm 1 can be moved up and down and turned with a simple constitution.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、レコードプレヤーのアーム駆動装置に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an arm drive device for a record player.

従来例の構成とその問題点 近年、レコードプレヤーのアーム駆動装置はコイルとマ
グネットの組合せによる電子式のものが各くなってきた
。この電子式のアーム駆動装置としてはピックアップア
ームを外陣方向に駆動する手段と、旋回方向に駆動する
手段が別々に構成されているため、コスト高なものとな
っていた。Conventional configurations and their problems In recent years, arm drive devices for record players have come to be of electronic type using a combination of coils and magnets. This electronic arm driving device is expensive because means for driving the pickup arm in the outer direction and means for driving it in the turning direction are separately constructed.

以下に従来のアーム駆動装置について説明する。A conventional arm drive device will be described below.

第１図は従来のアーム駆動装置を示す。第１図において
、ピンクアップアーム１は既知の様に、レコード盤を演
奏するために垂直軸２を中・しにイー口方向に旋回し、
水平軸３を中心にハーニ方向に昇降する必要がある。こ
のため、イー口方向の旋回は垂直軸２の下部に設けられ
た磁石４とコイル５の組合せによって既知の方法で行な
う様に構成されており、ハーニ方向の昇降はソレノイド
６によってリフ１−アーム７を昇降させて行なう様に構
成されていた。この様にアームの昇降と旋回を別別の手
段によって行なうため、複雑で高価な構造になっていた
。FIG. 1 shows a conventional arm drive device. In FIG. 1, the pink-up arm 1 rotates in the direction of the e-mouth around the vertical axis 2 in order to play a record, as is known.
It is necessary to move up and down in the direction of the harness around the horizontal axis 3. For this reason, turning in the E-mouth direction is performed by a known method using a combination of a magnet 4 and a coil 5 provided at the bottom of the vertical shaft 2, and lifting and lowering in the Harney direction is performed by a solenoid 6 between the lift 1 and the arm. It was configured to be carried out by raising and lowering 7. Since the arm is raised and lowered and rotated by separate means, the structure is complicated and expensive.

発明の目的 本発明は、坐−一対のマグネットとコイルの組合せによ
ってピックアップアームを昇降旋回のいずれの方向にも
駆動させることの出来る、アーム駆動装置を提供するこ
とを目的とする。OBJECTS OF THE INVENTION An object of the present invention is to provide an arm driving device that can drive a pickup arm in any direction of vertical rotation using a combination of a pair of magnets and a coil.

発明の構成 本発明のアーム駆動装置は、ピンクアップアームの垂直
）紬の延長線上に回転中心を有するように円盤状のマグ
ネットを設け、このマグネットの下面に上記マグネット
の回転中心と同心状となるようにリング状の昇降用駆動
巻線を面対向させ、上記マグネ７）の回転中心から外れ
た位置において上記昇降用駆動巻線上に重ねて配置した
上記ピックアップアームの旋回角に対応した径を有する
旋回用駆動巻線を上記マグネット下面のＮ−Ｓの着磁部
分にまたがるように面対向させ、かつ上記マグネットの
上面に設けたリフト板を上記ピックアップアームの水平
軸に平行な軸によって上記ピックアップアームの旋回台
に結合するように構成したことを特徴とするものである
。Composition of the Invention The arm driving device of the present invention is provided with a disk-shaped magnet so that the center of rotation is on an extension of the vertical line of the pink-up arm, and the lower surface of the magnet is concentric with the center of rotation of the magnet. The ring-shaped driving winding for lifting is arranged face to face with each other, and has a diameter corresponding to the turning angle of the pickup arm, which is placed over the driving winding for lifting at a position away from the center of rotation of the magnet 7). The drive winding for rotation is arranged face-to-face so as to straddle the N-S magnetized portion on the lower surface of the magnet, and a lift plate provided on the upper surface of the magnet is attached to the pickup arm by an axis parallel to the horizontal axis of the pickup arm. The invention is characterized in that it is configured to be coupled to a swivel base.

実施例の説明 第２図〜第４図に本発明のアーム駆動装置の一実施例を
示す。ピックアップアーム１は既知の様にレコード盤を
演奏するために垂直軸２を中心にイー口方向に旋回し、
水平軸３を中心にハーニ方向に昇降するように構成され
ている。１４は昇降旋回用のマグネットであり、円盤状
に形成されている。このマグネット１４はその平面にＮ
−３の２極着磁がほどこされており、Ｎ−５の境が水平
軸３と平行となり、中心が垂直軸２の中心になる様に配
置されている。１６はマグネット１４の上面に設けられ
た円盤状のマグネットヨークである。DESCRIPTION OF EMBODIMENTS FIGS. 2 to 4 show an embodiment of the arm driving device of the present invention. The pickup arm 1 pivots in the direction of the e-mouth around a vertical axis 2 in order to play a record in a known manner.
It is configured to move up and down in the harney direction around the horizontal axis 3. 14 is a magnet for lifting and turning, and is formed in a disk shape. This magnet 14 is N
-3 bipolar magnetization is applied, and the N-5 border is parallel to the horizontal axis 3 and the center is arranged to be the center of the vertical axis 2. 16 is a disc-shaped magnet yoke provided on the upper surface of the magnet 14.

１６はマグネット１４の下部でかつコイルが入るギャッ
プをもつように配設されたバックヨークでアリ、このバ
ックヨーク１６の中心に設けた軸１６＆によってマグネ
ットヨーク１６に結合されている。１了は旋回用駆動巻
線であり、マグネット１４の回転中・むから外れた位置
においてマグネット１４のＮ−３着磁部１４ａ　、　１
４ｂを横切るように面対向で設けられている。１８は旋
回用速度検出巻線であり、駆動巻線１７と線対称の位置
に駆動巻線１７と同様に設けられている。これらの巻線
１７．１８はピックアップアーム１の旋回角θに対応し
た径を有する。１９は昇降用駆動巻線であり、垂直軸２
を中心に旋回用の各巻線１７゜１８の内側にリング状に
形成され、各巻線１７゜１８に重ねられている。２ｏは
昇降用速度検出巻線であり、４・降用駆動巻線１９の外
側に同・０円状に形成され、各巻線１了、１８に重ねら
れている。Reference numeral 16 denotes a back yoke disposed below the magnet 14 with a gap for the coil to enter, and is coupled to the magnet yoke 16 by a shaft 16 & provided at the center of the back yoke 16. 1 is a driving winding for turning, and the N-3 magnetized portion 14a, 1 of the magnet 14 is in a position away from the magnet 14 while it is rotating.
They are provided face to face across 4b. Reference numeral 18 denotes a turning speed detection winding, which is provided in a position symmetrical to the drive winding 17 in the same way as the drive winding 17. These windings 17, 18 have a diameter corresponding to the rotation angle θ of the pickup arm 1. 19 is a drive winding for lifting and lowering, and the vertical axis 2
It is formed in a ring shape inside each winding 17° 18 for turning around the center, and is overlapped with each winding 17° 18. Reference numeral 2o denotes a speed detection winding for ascending and descending, which is formed in the same circular shape on the outside of the drive winding 4 and descending drive winding 19, and is overlapped with each winding 1 and 18.

各巻線１７，１８，１９，２０は共に固定された基板２
１の上に設けられている。２２はリフト板であり、マグ
ネｙ）ヨーク１６上に取付けられている。このリフト板
２２はピックアップアーム１の旋回台２３の下部におい
て水平軸２と平行な取付軸２４によって結合されている
。２２＆はリフト板２２に形成されたピックアップアー
ム１を昇降させるだめのアーム部である。Each winding 17, 18, 19, 20 is connected to a substrate 2 fixed together.
It is placed on top of 1. 22 is a lift plate, which is attached to the magnetic yoke 16. The lift plate 22 is connected to the lower part of the swivel base 23 of the pickup arm 1 by a mounting shaft 24 parallel to the horizontal shaft 2. 22& is an arm portion formed on the lift plate 22 for raising and lowering the pickup arm 1.

このような構成において、駆動巻線１７に通電すると、
マグネット１４が既知の方法で検出巻線１８によって速
度コントロールされながら旋回し、駆動巻線１９に通電
すると検出巻線２ｏによって既知の方法で速度コントロ
ールされながらマグネット１４が昇降する。したがって
、リフト板２２のアーム部２２２Ｌがピックアップアー
ム１の下面を昇降させる。以上によってピックアップア
ーム１を昇降、旋回させることが出来る。In such a configuration, when the drive winding 17 is energized,
The magnet 14 rotates while its speed is controlled by the detection winding 18 in a known manner, and when the drive winding 19 is energized, the magnet 14 moves up and down while its speed is controlled in a known manner by the detection winding 2o. Therefore, the arm portion 222L of the lift plate 22 raises and lowers the lower surface of the pickup arm 1. With the above steps, the pickup arm 1 can be raised, lowered, and rotated.

発明の効果 以上の様に本発明によれば、平面にＮ−３着磁された円
盤状のマグネットに面対向でリング状の昇降コイル及び
長円状の旋回コイルを組合せたので、簡単な構成にした
ピックアップアームを昇降旋回させることが出来るもの
である。しかも、旋回用巻線を昇降用巻線上に積重ねて
いるため、旋回駆動力を向上させることが出来る。Effects of the Invention As described above, according to the present invention, a ring-shaped lifting coil and an elliptical turning coil are combined face-to-face with a disk-shaped magnet that is N-3 magnetized on a plane, resulting in a simple configuration. The pickup arm can be raised and lowered. Moreover, since the turning winding is stacked on the lifting winding, the turning driving force can be improved.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来のアーム駆動装置の斜視図、第２図は本発
明のアーム駆動装置の一実施例を示す斜視図、第３図は
同装置の一部断面した側面図、第４図は同装置のマグネ
ットとコイルの組立斜視図である。 １・・・・・・ピックアップアーム、２・・・・・・垂
直１踊、３・・・・・・水平軸、１４・・・・・・外陣
旋回用マグネット、１５・・・・・マクネットヨーク、
１６・・・・・・バックヨーク、１７・・・・・・旋回
用駆動巻線、１８・・・・・・旋回用速度検出巻線、１
９・・・・・・昇降用駆動巻線、２ｏ・・・・・・昇降
用速度検出巻線、２１・・・・・・基板、２２・・・・
・・取付板、２３・・・・・・旋回台、２４・・・・・
・取付軸。Fig. 1 is a perspective view of a conventional arm drive device, Fig. 2 is a perspective view showing an embodiment of the arm drive device of the present invention, Fig. 3 is a partially sectional side view of the same device, and Fig. 4 is a perspective view of a conventional arm drive device. It is an assembled perspective view of the magnet and coil of the same device. 1...Pickup arm, 2...Vertical 1st movement, 3...Horizontal axis, 14...Magnet for outer circle rotation, 15...Mac net yoke,
16... Back yoke, 17... Turning drive winding, 18... Turning speed detection winding, 1
9... Lifting drive winding, 2o... Lifting speed detection winding, 21... Board, 22...
...Mounting plate, 23...Swivel base, 24...
・Mounting shaft.

Claims (1)

【特許請求の範囲】[Claims] ピックアップアームの垂直軸の延長線上に回転中心を有
するように円盤状のマグネットを設け、このマグネット
の下面に上記マグネットの回転中心と同心状となるよう
にリング状の昇降用駆動巻線を面対向させ、上記マグネ
ットの回転中心から外れた位置において上記昇降用駆動
巻線上に重ね配置した上記ピックアップアームの旋回角
に対応した径を有する旋回用駆動巻線を上記マグネット
の下面のＮ−Ｓの着磁部分にまたがるように面対向させ
、かつ上記マグネットの上面に設けたリフト板を上記ピ
ックアップアームの水平軸に平行な軸によって上記ピッ
クアップアームの旋回台に結合するように構成したこと
を特徴とするアーム駆動装置。A disk-shaped magnet is provided so that its rotation center is on an extension of the vertical axis of the pickup arm, and a ring-shaped lifting drive winding is placed on the bottom surface of the magnet so that it is concentric with the rotation center of the magnet. A swing drive winding having a diameter corresponding to the swing angle of the pickup arm, which is placed over the lifting drive winding at a position away from the rotation center of the magnet, is attached to the N-S on the bottom surface of the magnet. A lift plate provided on the upper surface of the magnet and facing the magnetic portion so as to span the same is configured to be connected to the swivel base of the pickup arm by an axis parallel to the horizontal axis of the pickup arm. Arm drive device.
JP18672684A 1984-09-06 1984-09-06 Arm driver Pending JPS6163901A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18672684A JPS6163901A (en) 1984-09-06 1984-09-06 Arm driver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18672684A JPS6163901A (en) 1984-09-06 1984-09-06 Arm driver

Publications (1)

Publication Number Publication Date
JPS6163901A true JPS6163901A (en) 1986-04-02

Family

ID=16193558

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18672684A Pending JPS6163901A (en) 1984-09-06 1984-09-06 Arm driver

Country Status (1)

Country Link
JP (1) JPS6163901A (en)

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