JPS62142727U

JPS62142727U -

Info

Publication number: JPS62142727U
Application number: JP2831986U
Authority: JP
Priority date: 1986-02-28
Filing date: 1986-02-28
Publication date: 1987-09-09

Description

[Brief explanation of drawings]

第１図はこの考案の光ピツクアツプ装置に適用
されるダンパー取付用シヤフトの正面図、第２図
はその側面図、第３図はその平面図、第４図はこ
の考案の一実施例による光ピツクアツプ装置を示
す平面図、第５図はその正面図であり、要部シヤ
フトは断面図で示しており、第６図は従来の光ピ
ツクアツプ装置を示す平面図、第７図はその縦正
面図であり、要部シヤフトは断面図で示したもの
である。図において、１はベース、２は支軸、３はホル
ダー、４は対物レンズ、５はダンパー、６ａ，６
ｂはシヤフト、７ａ，７ｂは穴、８ａ，８ｂは圧
入細径部、９は削りかす逃げ凹部、１０は空気逃
げ穴である。なお、図中、同一符号は同一又は相
当部分を示す。 Fig. 1 is a front view of a damper mounting shaft applied to an optical pickup device of this invention, Fig. 2 is a side view thereof, Fig. 3 is a plan view thereof, and Fig. 4 is an optical system according to an embodiment of this invention. FIG. 5 is a plan view showing a pick-up device, FIG. 5 is a front view thereof, and the main shaft is shown in a sectional view. FIG. 6 is a plan view showing a conventional optical pick-up device, and FIG. 7 is a vertical front view thereof. The main shaft is shown in cross-section. In the figure, 1 is a base, 2 is a support shaft, 3 is a holder, 4 is an objective lens, 5 is a damper, 6a, 6
b is a shaft, 7a and 7b are holes, 8a and 8b are press-fit narrow diameter portions, 9 is a swarf escape recess, and 10 is an air escape hole. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

A cylindrical movable shaft that is fitted onto a support shaft mounted on a base and is rotatable and movable in the axial direction, and a lens that is fixed to this movable shaft and has an optical axis parallel to the axial direction of the support shaft. A light spot track includes a damper that is attached to the holder and controls the drive of the holder, and a shaft that is erected on the base that holds the damper, and that focuses light onto the disk via the lens. In an optical pickup device that controls deviation and focal point deviation by driving the holder, a press-fit small diameter part is provided at the end of the shaft holding the damper to be press-fitted into the hole in the base, and a base of the press-fit small diameter part is provided. An optical pickup device characterized in that the shaft is provided with a shavings escape recess for storing shavings produced during press-fitting, and the shaft is provided with an escape hole for air during press-fitting.