JPS6146885B2 - - Google Patents
Info
- Publication number
- JPS6146885B2 JPS6146885B2 JP10850177A JP10850177A JPS6146885B2 JP S6146885 B2 JPS6146885 B2 JP S6146885B2 JP 10850177 A JP10850177 A JP 10850177A JP 10850177 A JP10850177 A JP 10850177A JP S6146885 B2 JPS6146885 B2 JP S6146885B2
- Authority
- JP
- Japan
- Prior art keywords
- record
- alumina
- vibrations
- single crystal
- player
- 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
- 239000013078 crystal Substances 0.000 claims description 15
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
Description
【発明の詳細な説明】
本発明は、レコードプレイヤーに使用されるレ
コード針を支持するための、ヘツドシエルに関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a headshell for supporting a record stylus used in a record player.
プレイヤーに使用されるヘツドシエルは、一般
にアルミニウム合金等の金属製のものから成り、
カートリツヂを介してレコード針を保持すると同
時に、プラグ、アース線等を取りつけて、アーム
先端に固定するものである。 Head shells used by players are generally made of metal such as aluminum alloy.
The record stylus is held through a cartridge, and at the same time, a plug, ground wire, etc. are attached and fixed to the tip of the arm.
レコード溝内を滑るレコード針は機械的振動を
受け、これを電気的信号に変換し、更に音声に変
換するための重要な部品であり、サフアイア針の
保持金具によつて、カートリツヂに直接固定され
ている。かかる構造のプレイヤーにあつては、レ
コード溝内に記録されている必要な振動の他に、
レコードの回転によるもの等、他の部分から来る
雑振動を避けることができず、原音に忠実な再生
が困難なものとなつていた。このため従来から高
級品種のプレイヤーでは、モーター回転軸の摺動
等については、可能な限り、雑振動が発生しない
ように配慮されているが、溝内におけるレコード
針とレコード盤との摩擦による振動等は除き得な
いものとされていた。 The record stylus, which slides in the record groove, receives mechanical vibrations and is an important component for converting this into electrical signals and then into audio. ing. In a player with such a structure, in addition to the necessary vibrations recorded in the record groove,
It was impossible to avoid noise vibrations coming from other parts, such as those caused by the rotation of the record, making it difficult to reproduce faithful to the original sound. For this reason, in high-quality players, care has been taken to prevent noise vibrations from occurring as much as possible in the sliding movement of the motor rotating shaft, but vibrations caused by the friction between the record stylus and the record disc in the groove. etc. were considered to be irreversible.
本発明は従来のプレイヤーにあつては不可避と
されていた、これらの雑振動を著しく減少させ、
レコード溝内に記録されている振動のみを再生さ
せた音質のよいプレイヤーの製造方法に関するも
のである。 The present invention significantly reduces these noise vibrations that were considered unavoidable in conventional players,
This invention relates to a method for manufacturing a player with good sound quality that reproduces only vibrations recorded in record grooves.
即ち、アーム先端に取りつけられたヘツドシエ
ルを、アルミナ単結晶によつて構成するもので、
このアルミナ単結晶は従来の合金製等のものと比
べて、振動の伝播速度が著しく大きい。従つてヘ
ツドシエルの受ける雑振動を速やかにアームに伝
播させ、機械的振動を電気的信号に変換するため
のカートリツヂに雑振動が入らないようにしたも
のである。その結果、カートリツヂはレコード溝
内に記録された必要な振動のみを受けることがで
きるため、プレイヤーとしてきわめて原音に忠実
な再生が可能となつた。 In other words, the head shell attached to the tip of the arm is made of alumina single crystal.
This alumina single crystal has a vibration propagation speed that is significantly higher than that of conventional alloys. Therefore, the noise vibrations received by the head shell are quickly propagated to the arm, and the noise vibrations are prevented from entering the cartridge for converting mechanical vibrations into electrical signals. As a result, the cartridge can receive only the necessary vibrations recorded in the record groove, making it possible for the player to reproduce extremely faithful to the original sound.
本発明におけるアルミナ単結晶は、一般にバグ
ダサロフ方式と呼ばれる製造方法によつて作られ
たもので、耐熱金属容器内のアルミナ原料を真空
下で溶融し、これを徐冷して単結晶とし、これを
切断加工してヘツドシエルとしたものである。 The alumina single crystal in the present invention is produced by a manufacturing method generally called the Bagdasarov method, in which an alumina raw material in a heat-resistant metal container is melted under vacuum, and then slowly cooled to form a single crystal. It was cut into a head shell.
このようにして得られたアルミナ単結晶よりな
るヘツドシエルは、単なるアルミナ焼結体或いは
単結晶等とは異なり、すぐれた振動伝播特性を示
す。その詳細な理由は不明であるが、恐らく真空
下（10-5mmＨｇ程度）で処理するため、原料中の
不純物が揮散し易くまた耐熱金属容器内の溶融物
を熱源内を移動させて結晶化させるため、高純度
で気泡の混入もなく、かつ、結晶の原子配列も規
則的で最適な結晶を成長させることができるため
であると考えられる。 The headshell made of alumina single crystal thus obtained exhibits excellent vibration propagation characteristics, unlike a mere alumina sintered body or single crystal. The detailed reason for this is unknown, but it is probably because impurities in the raw materials easily volatilize because the process is carried out under vacuum (approximately 10 -5 mmHg), and the molten material in the heat-resistant metal container is moved through a heat source and crystallized. It is thought that this is because it is possible to grow an optimal crystal with high purity, no bubbles, and a regular atomic arrangement.
以下に本発明の実施例を説明する。 Examples of the present invention will be described below.
Mo製箱型容器に純度99.8％以上のアルミナを
充填し、これを10-5Hｇの真空系内において2100
℃で加熱溶融した。この溶融物に結晶方位のわか
つている種結晶を溶着させ、熱源から徐々に水平
方向に引き出すことによつて溶融物を結晶成長さ
せた。得られたアルミナ単結晶は種結晶と同じ方
位を示し、純度99.9％の透明なかつ気泡の存在が
認められないものとして得られた。 A box-shaped container made of Mo is filled with alumina with a purity of 99.8% or more, and it is heated to
It was heated and melted at ℃. A seed crystal with a known crystal orientation was welded to this melt, and the melt was grown as a crystal by gradually drawing it out horizontally from a heat source. The obtained alumina single crystal showed the same orientation as the seed crystal, was transparent with a purity of 99.9%, and had no air bubbles.
尚、本発明においては減圧下で処理するため、
従来のアルミナ単結晶を製造する方法で使用され
る原料の場合程、高純度原料であることが要求さ
れないため原料の入手が容易である。 In addition, in the present invention, since the treatment is carried out under reduced pressure,
The raw materials are not required to be as high in purity as the raw materials used in conventional methods for producing alumina single crystals, so the raw materials are easy to obtain.
また、ヘツドシエルとしての商品価値を高める
ため遷移金属酸化物を混入して赤、青、黄等の気
泡のない透明着色体とすることもできる。 Further, in order to increase the commercial value as a head shell, transition metal oxides can be mixed to produce bubble-free transparent colored bodies such as red, blue, and yellow.
このようにして得られたアルミナ単結晶を適当
に切断加工したヘツドシエルをプレイヤーに使用
したところ、驚く程雑音の少ない、原音にきわめ
て忠実な音声が得られた。 When the thus obtained head shell, which was made by appropriately cutting the alumina single crystal, was used in a player, it was possible to obtain audio that was extremely faithful to the original sound with surprisingly little noise.
Claims (1)
以下の真空下で溶融結晶化させたアルミナ単結晶
を切断加工してなるプレイヤー用ヘツドシエルの
製造方法。1 Alumina raw material in a heat-resistant metal container is heated to 10 -5 mmHg.
A method for producing a head shell for a player by cutting a single alumina crystal melted and crystallized in a vacuum as described below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10850177A JPS5441702A (en) | 1977-09-09 | 1977-09-09 | Head shell for player |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10850177A JPS5441702A (en) | 1977-09-09 | 1977-09-09 | Head shell for player |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5441702A JPS5441702A (en) | 1979-04-03 |
| JPS6146885B2 true JPS6146885B2 (en) | 1986-10-16 |
Family
ID=14486369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10850177A Granted JPS5441702A (en) | 1977-09-09 | 1977-09-09 | Head shell for player |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5441702A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58124917U (en) * | 1982-02-17 | 1983-08-25 | オリンパス光学工業株式会社 | Laminated printed coil |
-
1977
- 1977-09-09 JP JP10850177A patent/JPS5441702A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5441702A (en) | 1979-04-03 |
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