JPH0361659U

JPH0361659U -

Info

Publication number: JPH0361659U
Application number: JP12294089U
Authority: JP
Priority date: 1989-10-20
Filing date: 1989-10-20
Publication date: 1991-06-17
Anticipated expiration: 2004-10-20
Also published as: JP2549055Y2

Description

[Brief explanation of the drawing]

第１図は本考案に係る光学ピツクアツプ装置の
支持機構の構成を一部を破断して示す正面図であ
り、第２図は上記支持機構の構成を示す平面図で
あり、第３図は上記支持機構の構成を示す斜視図
である。第４図は上記支持機構の要部となる予圧
用板バネ及び予圧用回転ローラの構成を示す拡大
斜視図であり、第５図は上記支持機構の要部とな
るローラ支持部材の構成を示す拡大分解斜視図で
ある。第６図は上記支持機構の要部となる予圧用
板バネ及び予圧用回転ローラの構成の他の例を示
す拡大斜視図であり、第７図は上記支持機構の要
部となる予圧用板バネ及び予圧用回転ローラの構
成のさらに他の例を示す拡大斜視図である。第８
図は上記支持機構の要部となるローラ支持部材の
構成の他の例を示す拡大分解斜視図である。第９
図は従来の光学ピツクアツプ装置の支持機構の構
成を示す平面図であり、第１０図は従来の光学ピ
ツクアツプ装置の支持機構の構成を一部を破断し
て示す側面図である。１……基準シヤフト、２……支持シヤフト、４
……光学ブロツク、５……光ビーム射出部、６，
７……ローラ支持部材、８，９，１０，１１……
位置決め用回転ローラ、１２……支持用回転ロー
ラ、１３……予圧用板バネ、１５……予圧用回転
ローラ。 FIG. 1 is a partially cutaway front view showing the structure of the support mechanism of the optical pickup device according to the present invention, FIG. 2 is a plan view showing the structure of the support mechanism, and FIG. FIG. 3 is a perspective view showing the configuration of a support mechanism. FIG. 4 is an enlarged perspective view showing the configuration of a preload leaf spring and a preload rotating roller, which are the main parts of the support mechanism, and FIG. 5 is a diagram showing the structure of a roller support member, which is the main part of the support mechanism. FIG. 3 is an enlarged exploded perspective view. FIG. 6 is an enlarged perspective view showing another example of the configuration of a preload plate spring and a preload rotating roller, which are the main parts of the support mechanism, and FIG. 7 is a preload plate, which is the main part of the support mechanism. It is an enlarged perspective view showing still another example of composition of a spring and a rotation roller for preload. 8th
The figure is an enlarged exploded perspective view showing another example of the configuration of a roller support member that is a main part of the support mechanism. 9th
1 is a plan view showing the structure of a support mechanism of a conventional optical pickup device, and FIG. 10 is a partially cutaway side view showing the structure of a support mechanism of a conventional optical pickup device. 1...Reference shaft, 2...Support shaft, 4
...Optical block, 5...Light beam emission section, 6,
7...Roller support member, 8, 9, 10, 11...
Positioning rotating roller, 12... Supporting rotating roller, 13... Preloading plate spring, 15... Preloading rotating roller.

Claims

[Claims for Utility Model Registration] (1) A reference shaft and at least an objective lens are attached, and are in contact with the reference shaft and are movable only in the direction around the axis of this reference shaft and in the axial direction of this reference shaft. an optical block of an optical pickup device whose position is regulated in such a way; a support shaft disposed parallel to the reference shaft; and a support shaft rotatably attached to the optical block and whose circumferential surface is brought into contact with the reference shaft side of the support shaft. A rotary supporting roller is brought into contact with the optical block, and a preload leaf spring whose proximal end is supported by the optical block is rotatably attached to the distal end side of the preloading leaf spring, and the rotating shaft is inclined with respect to the rotating axis of the rotating supporting roller. and a preload rotary roller whose circumferential surface abuts the support shaft on the reference shaft side of the support shaft so as to cooperate with and clamp the support shaft, and the preload plate The spring is elastically deformed so that its tip end approaches the optical block, and presses the preload rotating roller against the support shaft, thereby elastically biasing the optical block toward the reference shaft. Support mechanism. (2) a reference shaft, an optical block of an optical pickup device to which at least an objective lens is attached, each rotatably attached to the optical block via a first roller support member, and with their rotational axes inclined relative to each other; , a pair of positioning rollers whose peripheral surfaces abut against the optical block side of the reference shaft so as to sandwich the reference shaft; and a pair of positioning rollers each rotatably attached to the optical block via a second roller support member. a pair of positioning rollers that bring the circumferential surface into contact with the optical block side of the reference shaft so as to sandwich the reference shaft with their rotational axes tilted to each other; and the optical block is placed on the reference shaft side. and a preload member that elastically biases each roller support member, at least one of which is
A support mechanism for an optical pickup device, which is attached to the optical block so as to be adjustable in movement in a direction substantially orthogonal to the axial direction of the reference shaft.