JPS5843089Y2 - Friction wheel for rotating tone arm in record player - Google Patents
Friction wheel for rotating tone arm in record playerInfo
- Publication number
- JPS5843089Y2 JPS5843089Y2 JP1977123507U JP12350777U JPS5843089Y2 JP S5843089 Y2 JPS5843089 Y2 JP S5843089Y2 JP 1977123507 U JP1977123507 U JP 1977123507U JP 12350777 U JP12350777 U JP 12350777U JP S5843089 Y2 JPS5843089 Y2 JP S5843089Y2
- Authority
- JP
- Japan
- Prior art keywords
- friction wheel
- arm lever
- arm
- record player
- tone 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.)
- Expired
Links
Landscapes
- Pulleys (AREA)
- Transmission Devices (AREA)
Description
【考案の詳細な説明】
本考案は、レコードプレーヤにおけるトーンアーム回転
用摩擦車の改良に関する。[Detailed Description of the Invention] The present invention relates to an improvement of a friction wheel for rotating a tone arm in a record player.
摩擦車にてトーンアームを回転させるオートリターン機
構として、第１図に示すものが提案されている。As an auto-return mechanism that rotates the tone arm using a friction wheel, the one shown in FIG. 1 has been proposed.
これは、トーンアーム１の軸に取り付けられたアームレ
バー２円弧部に、部分的に突部を有する摩擦車３のその
突部を当接させて接触回転させるものである。In this case, a protrusion of a friction wheel 3 having a partially protruding portion is brought into contact with the circular arc portion of the arm lever 2 attached to the shaft of the tone arm 1, and the friction wheel 3 is caused to contact and rotate.
しかしながら、摩擦車３の材質を一般のゴム材等にした
場合、摩擦車３の軸とアームレバー２の軸との間の誤差
により、その実部において、アームレバー２と当接しな
かったり、あるいは逆に過大な圧力がアームレバー、す
なわちアームに加わったりして、アームに悪影響を及ぼ
す可能性がある。However, when the material of the friction wheel 3 is made of a general rubber material, etc., due to an error between the axis of the friction wheel 3 and the axis of the arm lever 2, the real part may not come into contact with the arm lever 2, or vice versa. Excessive pressure may be applied to the arm lever, that is, the arm, which may adversely affect the arm.
また、フオームラバー等の柔らかい材料を用いた場合に
は、さきの欠点は改善されるが、同時に回転方向にも柔
らかさをもつために、アームの動きが円滑でなくなる。Furthermore, if a soft material such as foam rubber is used, the above drawbacks can be improved, but at the same time, the arm will not move smoothly because it is also soft in the direction of rotation.
このようなところから、一般に摩擦車には、アームレバ
ーとの取付ピッチ誤差を吸収するために、押しつけ方向
にはある程度柔らかく、またアームの動きを円滑にする
ために回転方向にはある程度の硬さが要求される。For this reason, friction wheels are generally made to have a certain degree of softness in the pressing direction to absorb mounting pitch errors with the arm lever, and a certain degree of hardness in the rotational direction to ensure smooth arm movement. is required.
そこで本考案にむいては、アームレバーに当接する突部
の回転方向後端にクサビ状切欠部を形成し、当該突部が
回転方向と反対方向にたわむようにして、前記した問題
点を解決した、トーンアーム回転用摩擦車を提供するこ
とを目的とするものである。Therefore, in the present invention, a wedge-shaped notch is formed at the rear end in the rotational direction of the protrusion that contacts the arm lever, and the protrusion is bent in the opposite direction to the rotational direction, thereby solving the above-mentioned problems. The object of the present invention is to provide a friction wheel for rotating a tone arm.
以下、第２図以降を参照して一実施例を説明すると、摩
擦車４は、その回転矢印方向と反対方向に傾斜して放射
状に３本のステー４ａが形成され、このステー４ａによ
って、アームレバー２への円弧状の当接部４ｂが一体形
成されている。Hereinafter, one embodiment will be described with reference to FIG. An arcuate contact portion 4b that contacts the lever 2 is integrally formed.
従って、全体形状としては、突部の回転方向後端にクサ
ビ状切欠部４ｃが形成された形状となる。Therefore, the overall shape is such that a wedge-shaped notch 4c is formed at the rear end of the protrusion in the rotational direction.
従って、矢印方向の回転により、摩擦車４がアームレバ
ー２０周端に当接すると、その摩擦車４は第３図に示す
ように、たわみながら、アームレバー２を回転させるよ
うになる。Therefore, when the friction wheel 4 comes into contact with the peripheral end of the arm lever 20 due to rotation in the direction of the arrow, the friction wheel 4 rotates the arm lever 2 while being deflected, as shown in FIG.
このとき、ステー４ａは、たわみ方向へは曲げの作用を
し、回転方向には引張の作用をする。At this time, the stay 4a exerts a bending action in the deflection direction and a tension action in the rotation direction.
本考案は上述したように、回転方向と反対の方向に傾斜
して放射状に形成された少なくとも３本のステーにより
円弧状の当接部の両端部と中間部を支持させているため
、当接部がアームレバーと当接してアームレバーを接触
回転する際、ステーに曲げと回転方向への引張の作用が
加わっても、当接部はその円弧状態を保ち、しかも回転
方向への逃げも僅かとなり、アームレバーを円滑に回転
駆動することができる。As mentioned above, the present invention supports both ends and the middle part of the arc-shaped abutment part by at least three stays formed radially and inclined in the direction opposite to the rotation direction, so that the abutment When the arm lever comes into contact with the arm lever and the arm lever is rotated, the contact part maintains its arc even if the stay is subjected to bending and tension in the direction of rotation, and there is little escape in the direction of rotation. Therefore, the arm lever can be rotated smoothly.
第１図は従来の摩擦車を使用した機構の説明図、第２図
は本実施例に係る摩擦車の説明図、第３図はその摩擦車
の作用説明図である。
４・・・摩擦車、４ａ・・・ステー ４ｂ・・・当接部
。FIG. 1 is an explanatory diagram of a mechanism using a conventional friction wheel, FIG. 2 is an explanatory diagram of a friction wheel according to this embodiment, and FIG. 3 is an explanatory diagram of the operation of the friction wheel. 4... Friction wheel, 4a... Stay 4b... Contact part.
Claims (1)
に傾斜して放射状に形成された少なくとも３本のステー
と、アームレバーの円弧部に当接してアームレバーを接
触回転する円弧状の当接部とを備え、前記円弧状の当接
部の両端部と中間部を前記ステーで支持するように前記
当接部と前記ステーを一体形成したことを特徴とするレ
コードプレーヤにおけるトーンブー４回転用摩擦車。At least three stays formed radially and inclined in a direction opposite to the direction of rotation when rotating the arm lever, and an arc-shaped contact that contacts the arc portion of the arm lever to contact and rotate the arm lever. 4-rotation friction in a record player, characterized in that the contact portion and the stay are integrally formed so that both ends and intermediate portions of the arcuate contact portion are supported by the stay. car.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977123507U JPS5843089Y2 (en) | 1977-09-16 | 1977-09-16 | Friction wheel for rotating tone arm in record player |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977123507U JPS5843089Y2 (en) | 1977-09-16 | 1977-09-16 | Friction wheel for rotating tone arm in record player |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5450515U JPS5450515U (en) | 1979-04-07 |
| JPS5843089Y2 true JPS5843089Y2 (en) | 1983-09-29 |
Family
ID=29082673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1977123507U Expired JPS5843089Y2 (en) | 1977-09-16 | 1977-09-16 | Friction wheel for rotating tone arm in record player |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5843089Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5031596U (en) * | 1973-07-17 | 1975-04-07 |
-
1977
- 1977-09-16 JP JP1977123507U patent/JPS5843089Y2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5031596U (en) * | 1973-07-17 | 1975-04-07 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5450515U (en) | 1979-04-07 |
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