JP2007280506A - Optical pickup - Google Patents

Optical pickup Download PDF

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JP2007280506A
JP2007280506A JP2006105089A JP2006105089A JP2007280506A JP 2007280506 A JP2007280506 A JP 2007280506A JP 2006105089 A JP2006105089 A JP 2006105089A JP 2006105089 A JP2006105089 A JP 2006105089A JP 2007280506 A JP2007280506 A JP 2007280506A
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sliding
attachment
moving base
optical pickup
pickup device
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JP4467538B2 (en
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Masato Iwai
正人 岩井
Masahito Obara
雅人 小原
Tatsu Uchiyama
龍 内山
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Alpine Electronics Inc
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Alpine Electronics Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical pickup which can build a sliding section between the moving base and the guide shaft by using minimum components and precisely position the guide shaft and the sliding section. <P>SOLUTION: A slide fitting 20 is attached to the moving base 11. The mounting base part 21 of the slide fitting 20 is inserted between a mounting part 13 and a sadwiching part 14, and the fixing section 25 of the slide fitting 20 is pressed to the upper surface 13b of the mounting part 13 with a screw 29. A slide projection 23 is pushed by the elasticity and positioned on the lower side 13a of the mounting part 13. An elastic arm 22c is formed and unitized with the slide fitting 20, and the guide shaft 3 is supported by the elastic projection 24 formed on the elastic arm 22c and the slide projection 23. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、ディスクに対して情報の記録や再生を行う光ピックアップ装置に関する。   The present invention relates to an optical pickup device that records and reproduces information on a disc.

下記の特許文献１には、光記録ディスクに対する情報の再生や情報の記録を行う光ピックアップ装置が開示されている。   Patent Document 1 below discloses an optical pickup device that reproduces information from or records information on an optical recording disk.

この光ピックアップ装置では、ベースに対物レンズやその他の光学部材が搭載されている。また、ベースをディスクの記録面に沿って移動させるための、スクリューシャフトとガイド面とが平行に配置されている。   In this optical pickup device, an objective lens and other optical members are mounted on a base. Further, a screw shaft and a guide surface for moving the base along the recording surface of the disk are arranged in parallel.

ベースの一方の側部２箇所が、スクリューシャフトに最小の隙間を介して挿通され、スクリューシャフトの送り力により、ベースはスクリューシャフトを基準として直線的に移動する。また、ベースの他方の側部に設けられた受け部がガイド部材を摺動することにより、ベースが直線的に移動できるように構成されている。   Two portions on one side of the base are inserted through the screw shaft through a minimum gap, and the base moves linearly with reference to the screw shaft by the feed force of the screw shaft. In addition, the base is configured to move linearly when a receiving portion provided on the other side of the base slides on the guide member.

ベースの側部に設けられた受け部には、ガイド部材と直交する向きに配置されて、ガイド部材と摺動する金属ピンが固定されている。さらに、前記受け部では、金属ピンに対向する板ばねがベースに固定されており、金属ピンと板ばねとがガイド部材を挟み、金属ピンと板ばねの双方がガイド部材と摺動するように構成されている。   A metal pin that is arranged in a direction orthogonal to the guide member and slides on the guide member is fixed to the receiving portion provided on the side portion of the base. Further, the receiving part is configured such that a plate spring facing the metal pin is fixed to the base, the metal pin and the plate spring sandwich the guide member, and both the metal pin and the plate spring slide with the guide member. ing.

光ピックアップ装置がディスクの径方向に移動する間、対物レンズからディスクの記録面に検知光が照射され、ディスクの記録面からの戻り光が対物レンズを介して受光されて、ディスクの記録面に記録されたディジタル情報が読み取られる。あるいは、対物レンズからディスクの記録面に集光される記録光のエネルギーによって、ディスクの記録面にディジタル情報が記録される。
特開２００１−２７３７３２号公報 While the optical pickup device moves in the radial direction of the disc, detection light is irradiated from the objective lens to the recording surface of the disc, and return light from the recording surface of the disc is received through the objective lens and is applied to the recording surface of the disc. The recorded digital information is read. Alternatively, digital information is recorded on the recording surface of the disk by the energy of the recording light condensed on the recording surface of the disk from the objective lens.
JP 2001-273732 A

引用文献１に記載の発明は、前記受け部に設けられた金属ピンとガイド部材を摺動させることで、前記受け部とガイド部材との摺動摩擦力を低減できる効果を奏する。その反面、金属ピンと板ばねが別部材としてベースに固定されているため、部品数が多くなる。また、金属ピンをベースの受け部に埋設しているため、金属ピンをベースに取り付ける作業が煩雑であり、固定力が弱すぎる場合には、金属ピンがベースから離脱するおそれもある。   The invention described in the cited document 1 has an effect that the sliding frictional force between the receiving part and the guide member can be reduced by sliding the metal pin provided on the receiving part and the guide member. On the other hand, since the metal pin and the leaf spring are fixed to the base as separate members, the number of parts increases. In addition, since the metal pin is embedded in the receiving part of the base, the work of attaching the metal pin to the base is complicated, and if the fixing force is too weak, the metal pin may be detached from the base.

本発明は上記従来の課題を解決するものであり、最小の部品数で構成でき、組立作業が容易であり、しかも、対物レンズを搭載したベースを高精度に直線移動させることができる光ピックアップ装置を提供することを目的としている。   The present invention solves the above-described conventional problems, and can be configured with a minimum number of parts, can be easily assembled, and can linearly move a base on which an objective lens is mounted with high accuracy. The purpose is to provide.

本発明は、直線状に延びるガイド部材と、前記ガイド部材に案内されて情報が記録されたディスクの面に沿って移動する移動ベースと、前記移動ベースに搭載されてディスクに光束を集光させる対物レンズとを有する光ピックアップ装置において、
前記移動ベースには金属板製の摺動金具が固定されており、前記摺動金具には、前記ガイド部材を摺動する摺動部と、前記摺動部と逆の側から前記ガイド部材に弾性力を有して圧接する弾性腕部とが一体に形成されていることを特徴とするものである。 The present invention relates to a linearly extending guide member, a moving base that moves along the surface of the disk on which information is recorded by being guided by the guide member, and a light beam that is mounted on the moving base and focuses the light beam on the disk. In an optical pickup device having an objective lens,
A metal plate sliding metal fitting is fixed to the moving base. The sliding metal fitting includes a sliding portion that slides the guide member, and a guide member from the side opposite to the sliding portion. The elastic arm portion that is brought into pressure contact with the elastic force is integrally formed.

本発明の光ピックアップ装置では、ガイド部材を挟んで、このガイド部材を摺動する摺動部および弾性腕部が金属板で一体に形成されているため、ガイド部材と摺動する部分の部品点数を削減できる。また、摺動部と弾性腕部とは一体に形成されているため、摺動部と弾性腕部との対向間隔を適正に設定でき、摺動部および弾性腕部の、ガイド部材に対する摺動摩擦力を最適に設定できる。   In the optical pickup device of the present invention, since the sliding portion and the elastic arm portion sliding on the guide member are integrally formed of a metal plate with the guide member interposed therebetween, the number of parts of the portion sliding on the guide member is reduced. Can be reduced. Further, since the sliding portion and the elastic arm portion are integrally formed, the facing distance between the sliding portion and the elastic arm portion can be set appropriately, and the sliding friction of the sliding portion and the elastic arm portion with respect to the guide member The force can be set optimally.

本発明は、前記摺動金具には、その一部が前記摺動部となる取付け基準部と、前記弾性腕部と逆の側で前記取付け基準部に間隔を空けて対向する固定部と、前記取付け基準部と前記固定部とを連結する連結部とを有し、前記弾性腕部は、前記連結部から離れた位置で前記取付け基準部から折り曲げられて、前記取付け基準部に対向しており、
前記移動ベースには、前記摺動金具が取り付けられる取付け部が形成され、前記固定部が前記取付け部の上面に設置され、前記取付け基準部が前記取付け部の下面に設置されて、前記固定部が前記取付け部の上面に固定されているものとして構成できる。 According to the present invention, the sliding bracket includes an attachment reference portion, a part of which is the sliding portion, and a fixing portion that is opposed to the attachment reference portion at a side opposite to the elastic arm portion, A connecting portion that connects the attachment reference portion and the fixing portion, and the elastic arm portion is bent from the attachment reference portion at a position away from the connection portion, and faces the attachment reference portion. And
The moving base is formed with an attachment portion to which the sliding metal fitting is attached, the fixing portion is installed on the upper surface of the attachment portion, the attachment reference portion is installed on the lower surface of the attachment portion, and the fixing portion Is fixed to the upper surface of the mounting portion.

上記構成の光ピックアップ装置では、固定部と取付け基準部とで、移動ベースの一部である取付け部を挟むようにして、この摺動金具をベースに取り付けることができる。よって、摺動金具をベースに取り付ける際の作業が容易である。   In the optical pickup device having the above configuration, the sliding bracket can be attached to the base so that the fixing portion and the attachment reference portion sandwich the attachment portion that is a part of the moving base. Therefore, the operation | work at the time of attaching a sliding metal fitting to a base is easy.

また本発明は、前記移動ベースには、前記取付け部の下面に間隔を空けて対向する挟持部が設けられ、前記取付け基準部が、前記取付け部と前記挟持部の間に挟みこまれていることが好ましい。   According to the present invention, the moving base is provided with a holding portion facing the lower surface of the mounting portion with a space therebetween, and the mounting reference portion is sandwiched between the mounting portion and the holding portion. It is preferable.

前記取付け基準部を、ベースに設けられた取付け部と挟持部との間に差し込むことにより、その一部が摺動部となる取付け基準部を、ベースの取付け部の下面に位置決めして設置できる。   By inserting the attachment reference portion between the attachment portion provided on the base and the clamping portion, the attachment reference portion, a part of which becomes a sliding portion, can be positioned and installed on the lower surface of the base attachment portion. .

さらに本発明は、前記摺動金具が前記移動ベースに取り付けられていない自由状態において、前記固定部は、前記連結部から離れるにしたがって前記取付け基準部から遠ざかるように傾斜しており、前記固定部が、前記連結部から離れた位置で前記移動シャーシの前記取付け部に固定されて、前記取付け基準部が、前記取付け部の下面に当接させられているものが好ましい。   Furthermore, the present invention is such that, in a free state where the sliding metal fitting is not attached to the moving base, the fixing portion is inclined so as to move away from the attachment reference portion as the distance from the connection portion increases. However, it is preferable that the mounting reference portion is fixed to the mounting portion of the movable chassis at a position away from the connecting portion, and the mounting reference portion is brought into contact with the lower surface of the mounting portion.

上記構成の光ピックアップ装置では、固定部を、ベースの取付け部の上面にねじ止めなどで固定すると、固定部を取付け部の上面に押し付ける力の反力で、取付け基準部が取付け部の下面に密着しやすくなる。そのため、取付け基準部に設けられる摺動部をベースに高精度に位置決めできる。   In the optical pickup device having the above configuration, when the fixing portion is fixed to the upper surface of the mounting portion of the base by screwing or the like, a reaction force of pressing the fixing portion against the upper surface of the mounting portion causes the mounting reference portion to be on the lower surface of the mounting portion. It becomes easy to adhere. Therefore, the sliding portion provided in the attachment reference portion can be positioned with high accuracy based on the base.

また、本発明は、前記摺動金具は、前記固定部と前記連結部との境界部の断面積が、前記取付け基準部と前記連結部との境界部の断面積よりも小さく形成されていることが好ましい。   Further, in the present invention, the sliding metal fitting is formed such that a cross-sectional area of a boundary portion between the fixed portion and the connecting portion is smaller than a cross-sectional area of the boundary portion between the attachment reference portion and the connecting portion. It is preferable.

このようにすると、固定部と連結部との境界部で、摺動金具が折り曲がりやすくなり、摺動金具の固定部をベースの取付け部の上面に固定する際、その反力で、取付け基準部が取付け部の下面からわずかに離れるような現象を防止でき、取付け基準部を常に取付け部の下面に密着させやすくなる。   In this way, the sliding bracket is easily bent at the boundary between the fixed portion and the connecting portion, and when the fixed portion of the sliding bracket is fixed to the upper surface of the mounting portion of the base, the reaction force causes the mounting reference. It is possible to prevent a phenomenon in which the portion is slightly separated from the lower surface of the mounting portion, and the mounting reference portion can always be in close contact with the lower surface of the mounting portion.

また、本発明では、前記取付け基準部の一部に、前記弾性腕に向けて突出する凸部が形成され、この凸部が前記摺動部とされていることが好ましい。   In the present invention, it is preferable that a convex portion protruding toward the elastic arm is formed on a part of the attachment reference portion, and the convex portion is the sliding portion.

前記凸部を摺動部とすることにより、摺動部とガイド部材との摺動摩擦力を低減できる。   By making the convex portion a sliding portion, the sliding frictional force between the sliding portion and the guide member can be reduced.

また、本発明は、前記移動ベースには、前記対物レンズを搭載したピックアップ本体が搭載されており、前記摺動金具には、前記ピックアップ本体を前記移動ベースに押圧する押圧部が一体に形成されているものである。   In the present invention, the moving base includes a pickup body on which the objective lens is mounted, and the sliding bracket is integrally formed with a pressing portion that presses the pickup body against the moving base. It is what.

また、本発明は、前記移動ベースには、前記押圧部による押圧側と逆側から挿入されて前記ピックアップ本体に螺着された調整ねじが設けられており、前記調整ねじのねじ込み量を可変することで、前記対物レンズの光軸の倒れ調整が可能とされているものである。   In the present invention, the moving base is provided with an adjusting screw inserted from the side opposite to the pressing side by the pressing portion and screwed to the pickup body, and the screwing amount of the adjusting screw is variable. Thus, the tilt adjustment of the optical axis of the objective lens can be adjusted.

上記構成の光ピックアップ装置では、摺動金具に、摺動部と弾性腕部のみならず、ピックアップ本体をベースに設置するために押圧部が一体に形成されているため、光ピックアップ装置を構成する部品数をさらに削減することができる。   In the optical pickup device having the above-described configuration, not only the sliding portion and the elastic arm portion but also the pressing portion for integrally installing the pickup body on the base is formed on the sliding metal fitting, so that the optical pickup device is configured. The number of parts can be further reduced.

本発明の光ピックアップ装置では、対物レンズが搭載された移動ベースと、ガイド部材との摺動部分の部品点数を削減でき、製造コストを低減することができる。また、ガイド部材との摺動部分の組み立て作業も容易になる。さらに、ガイド部材と摺動する摺動部を、ベースに高精度に位置決めして取り付けることも容易である。   In the optical pickup device of the present invention, the number of parts of the sliding portion between the moving base on which the objective lens is mounted and the guide member can be reduced, and the manufacturing cost can be reduced. Moreover, the assembly work of the sliding part with the guide member is also facilitated. Furthermore, it is easy to position and attach the sliding portion sliding with the guide member to the base with high accuracy.

図１（Ａ）は、本発明の実施の形態の光ピックアップ装置を示す斜視図、図１（Ｂ）は、前記光ピックアップ装置の主要部である移動ベースと摺動金具とを分離して示す分解斜視図、図２は、前記光ピックアップ装置の平面図、図３は、前記摺動金具を示す斜視図である。図４は、移動ベースへの摺動金具の取付け構造を示す図１（Ａ）（Ｂ）のＩＶ矢視の部分側面図であり、図４（Ａ）は摺動金具を移動ベースに差し込んだ状態を示し、図４（Ｂ）は、摺動金具をねじで固定した状態を示す。図５は、図４（Ｂ）のＶ矢視の部分端面図である。図６は、移動ベースからピックアップ本体を取り除いた状態を示す平面図、図７は、移動ベース上に設けられたピックアップ本体の光軸調整機構を示す断面図である。   FIG. 1A is a perspective view showing an optical pickup device according to an embodiment of the present invention, and FIG. 1B shows a movable base and a sliding bracket, which are main parts of the optical pickup device, separately. FIG. 2 is an exploded perspective view, FIG. 2 is a plan view of the optical pickup device, and FIG. 3 is a perspective view showing the sliding metal fitting. FIG. 4 is a partial side view taken along the arrow IV in FIGS. 1A and 1B showing the mounting structure of the sliding bracket on the moving base. FIG. 4A shows the sliding bracket inserted into the moving base. A state is shown and FIG. 4 (B) shows the state which fixed the sliding metal fitting with the screw. FIG. 5 is a partial end view taken along the arrow V in FIG. FIG. 6 is a plan view showing a state in which the pickup main body is removed from the moving base, and FIG. 7 is a cross-sectional view showing an optical axis adjusting mechanism of the pickup main body provided on the moving base.

図１（Ａ）と図２に示す光ピックアップ装置１は、ＣＤプレーヤやＤＶＤプレーヤなどの光ディスク装置に用いられる。光ピックアップ装置１は、移動部１０を有し、さらに、この移動部１０を光ディスクの記録面に沿って案内するとともに、移動部１０に移動力を与えるスクリュー軸２と、移動部１０を前記移動方向へ案内するガイド軸（ガイド部材）３とを有している。スクリュー軸２とガイド軸３は互いに平行に延びている。スクリュー軸２は、スレッドモータ（図示せず）によって回転駆動される。   The optical pickup device 1 shown in FIGS. 1A and 2 is used for an optical disk device such as a CD player or a DVD player. The optical pickup device 1 has a moving unit 10, and further guides the moving unit 10 along the recording surface of the optical disc and gives a moving force to the moving unit 10, and the moving unit 10 moves the moving unit 10. A guide shaft (guide member) 3 for guiding in the direction is provided. The screw shaft 2 and the guide shaft 3 extend in parallel to each other. The screw shaft 2 is rotationally driven by a thread motor (not shown).

移動部１０は、移動ベース１１と、移動ベース１１に搭載されたピックアップ本体３０を有している。移動ベース１１は合成樹脂材料またはアルミニウム合金などで形成されている。ピックアップ本体３０には、光ディスクの記録面に対向する対物レンズ３１が設けられている。また、ピックアップ本体３０の内部には、発光素子と受光素子とが設けられ、発光素子から発せられた光束が対物レンズ３１によって光ディスクの記録面に集光される。また、光ディスクの記録面から反射された戻り光束が、対物レンズ３１を経てピックアップ本体３０内に戻り、前記受光素子で受光される。   The moving unit 10 includes a moving base 11 and a pickup main body 30 mounted on the moving base 11. The moving base 11 is made of a synthetic resin material or an aluminum alloy. The pickup body 30 is provided with an objective lens 31 that faces the recording surface of the optical disk. In addition, a light emitting element and a light receiving element are provided inside the pickup body 30, and a light beam emitted from the light emitting element is condensed on the recording surface of the optical disk by the objective lens 31. The return light beam reflected from the recording surface of the optical disk returns to the pickup body 30 through the objective lens 31 and is received by the light receiving element.

移動ベース１１の一方の側部（Ｘ１側の側部）には、基準軸受部１２が一体に形成されている。基準軸受部１２には、一対の軸受穴１２ａ，１２ｂが形成されている。この軸受穴１２ａ，１２ｂが、スクリュー軸２の外周に最小の隙間を介して挿通されており、移動ベース１１は、スクリュー軸２の軸中心線を移動基準として直線的に移動する。基準軸受部１２では、軸受穴１２ａと軸受穴１２ｂとの中間に、係止部材（図示せず）が設けられ、この係止部材がばねの付勢力を介して、スクリュー軸２の螺旋溝に係合している。そして、スクリュー軸２の回転動力が前記係止部材に直線移動力を与え、移動部１０が前後に直線移動できる。   A reference bearing 12 is integrally formed on one side (X1 side) of the moving base 11. The reference bearing portion 12 is formed with a pair of bearing holes 12a and 12b. The bearing holes 12a and 12b are inserted through the outer periphery of the screw shaft 2 through a minimum gap, and the moving base 11 moves linearly with the axial center line of the screw shaft 2 as a movement reference. In the reference bearing portion 12, a locking member (not shown) is provided in the middle between the bearing hole 12a and the bearing hole 12b, and this locking member is formed in the spiral groove of the screw shaft 2 through the biasing force of the spring. Is engaged. And the rotational power of the screw shaft 2 gives a linear moving force to the locking member, and the moving part 10 can move linearly back and forth.

移動ベース１１の他方の側部（Ｘ２側の側部）には受け部１８が設けられ、この受け部１８がガイド軸３を摺動する。受け部１８は、ガイド軸３の上部（Ｚ１側）と下部（Ｚ２側）を摺動し、これにより、移動ベース１１は、スクリュー軸２の軸中心線を移動基準として移動する。   A receiving portion 18 is provided on the other side (X2 side) of the moving base 11, and this receiving portion 18 slides on the guide shaft 3. The receiving part 18 slides on the upper part (Z1 side) and the lower part (Z2 side) of the guide shaft 3, whereby the movement base 11 moves with the axial center line of the screw shaft 2 as a movement reference.

図４（Ａ）（Ｂ）および図５に詳しく示されるように、受け部１８では、移動ベース１１に取付け部１３が一体に形成されており、取付け部１３に摺動金具２０が取り付けられている。取付け部１３は、摺動金具２０の取付け基準面となる下面１３ａと、摺動金具２０を固定する固定面となる上面１３ｂと、下面１３ａと上面１３ｂの双方に直交する垂直面である端面１３ｃを有しており、上面１３ｂと端面１３ｃとの角部には、面取り部１３ｄが形成されている。   As shown in detail in FIGS. 4A and 4B and FIG. 5, in the receiving portion 18, the mounting portion 13 is formed integrally with the moving base 11, and the sliding bracket 20 is attached to the mounting portion 13. Yes. The mounting portion 13 includes a lower surface 13a serving as a mounting reference surface of the sliding metal fitting 20, an upper surface 13b serving as a fixing surface for fixing the sliding metal fitting 20, and an end surface 13c that is a vertical surface orthogonal to both the lower surface 13a and the upper surface 13b. A chamfered portion 13d is formed at the corner between the upper surface 13b and the end surface 13c.

図５に示すように、移動ベース１１には、Ｙ２側に挟持部１４が、Ｙ１側に挟持部１５が設けられ、挟持部１４と挟持部１５との間には、可動空間１６が形成されている。図４（Ａ）（Ｂ）に示すように、挟持部１４と挟持部１５は、取付け部１３の端面１３ｃよりもＸ１側に後退した位置に形成されている。挟持部１４の上面である挟持面１４ａと、挟持部１５の上面である挟持面１５ａは、互いに同一面上に位置する平面であり、取付け部１３の下面１３ａと、挟持面１４ａ，１５ａとの隙間の間隔は、摺動金具２０を構成する金属板の板厚寸法と同じか、それよりもやや広く形成されている。また、可動空間１６は、取付け部１３の下面１３ａの下方に延びる空間である。   As shown in FIG. 5, the moving base 11 is provided with a clamping part 14 on the Y2 side and a clamping part 15 on the Y1 side, and a movable space 16 is formed between the clamping part 14 and the clamping part 15. ing. As shown in FIGS. 4 (A) and 4 (B), the sandwiching portion 14 and the sandwiching portion 15 are formed at a position retracted further toward the X1 side than the end surface 13c of the attachment portion 13. The clamping surface 14a that is the upper surface of the clamping unit 14 and the clamping surface 15a that is the upper surface of the clamping unit 15 are planes that are located on the same plane, and are the lower surface 13a of the mounting unit 13 and the clamping surfaces 14a and 15a. The gap is formed so as to be the same as or slightly wider than the thickness of the metal plate constituting the sliding metal fitting 20. The movable space 16 is a space extending below the lower surface 13 a of the attachment portion 13.

図３に示すように、摺動金具２０は、ステンレスやリン青銅板などの板ばねとして機能できる弾性を発揮する金属板で形成されている。摺動金具２０は、ほぼ矩形状の取付け基準部２１を有している。取付け基準部２１のＸ１側の端部２１ａからは、変形部２２が一体に延びている。変形部２２のＹ方向の幅寸法は、取付け基準部２１の同方向の幅寸法よりも細く形成されている。変形部２２は、取付け基準部２１の端部２１ａから一体にＸ１方向に延びる延出部２２ａと、延出部２２ａのＸ１側でＵ字形状に曲げられた湾曲部２２ｂと、湾曲部２２ｂに連続してＸ２方向に延びる弾性腕部２２ｃとを有しており、弾性腕部２２ｃは、Ｚ２側において、取付け基準部２１の下面に対向している。   As shown in FIG. 3, the sliding metal fitting 20 is formed of a metal plate exhibiting elasticity that can function as a leaf spring such as stainless steel or phosphor bronze plate. The sliding metal fitting 20 has a substantially rectangular attachment reference portion 21. From the end portion 21a on the X1 side of the attachment reference portion 21, a deformable portion 22 extends integrally. The width dimension of the deformation part 22 in the Y direction is formed to be narrower than the width dimension of the attachment reference part 21 in the same direction. The deformable portion 22 includes an extended portion 22a that integrally extends from the end portion 21a of the attachment reference portion 21 in the X1 direction, a curved portion 22b that is bent in a U shape on the X1 side of the extended portion 22a, and a curved portion 22b. The elastic arm portion 22c continuously extends in the X2 direction, and the elastic arm portion 22c faces the lower surface of the attachment reference portion 21 on the Z2 side.

取付け基準部２１のＸ２側の端部には、Ｚ２方向へ***形成された１つの摺動凸部２３が一体に形成されている。また、弾性腕部２２ｃのＸ２側の端部には、Ｚ１方向へ***形成された１つの弾圧凸部２４が一体に形成されている。摺動凸部２３と弾圧凸部２４は、Ｚ方向において互いに対向している。摺動金具２０に外力が作用していない自由状態において、摺動凸部２３の下面と弾圧凸部２４の上面との対向間隔は、ガイド軸３の直径寸法よりも狭くなるように設定されている。   At the end portion on the X2 side of the attachment reference portion 21, one sliding convex portion 23 that is raised in the Z2 direction is integrally formed. In addition, one elastic convex portion 24 that is raised in the Z1 direction is formed integrally with the end portion on the X2 side of the elastic arm portion 22c. The sliding convex portion 23 and the elastic convex portion 24 face each other in the Z direction. In a free state where no external force is applied to the sliding metal fitting 20, the facing distance between the lower surface of the sliding convex portion 23 and the upper surface of the elastic convex portion 24 is set to be narrower than the diameter dimension of the guide shaft 3. Yes.

摺動金具２０には、取付け基準部２１のＺ１側、すなわち弾性腕部２２ｃと逆の側に対向する固定部２５が一体に形成されている。摺動金具２０のＸ２側の端部には、取付け基準部２１と固定部２５とを連結する連結部２６，２６が一体に形成されている。連結部２６，２６は、Ｙ方向に間隔を空けて設けられ、取付け基準部２１から直角に立ち上がるように折り曲げられている。   The sliding bracket 20 is integrally formed with a fixing portion 25 facing the Z1 side of the mounting reference portion 21, that is, the side opposite to the elastic arm portion 22c. At the end of the sliding bracket 20 on the X2 side, connecting portions 26 and 26 for connecting the attachment reference portion 21 and the fixing portion 25 are integrally formed. The connecting portions 26, 26 are provided with an interval in the Y direction, and are bent so as to rise perpendicularly from the attachment reference portion 21.

図３に示すように、連結部２６，２６の幅寸法はＷ２である。固定部２５のＸ２側の端部には、連結部２６，２６と連続する幅細部２５ａ，２５ａが形成されており、この幅細部２５ａ，２５ａの幅寸法は、連結部２６，２６の幅寸法と同じＷ２である。また、連結部２６，２６と幅細部２５ａ，２５ａとの折り曲げ境界部には凹部２７，２７が形成されており、前記折り曲げ境界部での断面積が、連結部２６，２６の断面積および幅細部２５ａ，２５ａの断面積よりも小さくなっている。なお、前記折り曲げ境界部において、板厚を他の部分よりも局部的に薄くすることにより、この折り曲げ境界部での断面積を、連結部２６，２６の断面積および幅細部２５ａ，２５ａの断面積よりも小さくしてもよい。   As shown in FIG. 3, the width dimension of the connection parts 26 and 26 is W2. The end portions on the X2 side of the fixed portion 25 are formed with width details 25a and 25a continuous with the connecting portions 26 and 26. The width dimensions of the width details 25a and 25a are the width dimensions of the connecting portions 26 and 26, respectively. Is the same W2. Further, concave portions 27 are formed at the bending boundary portions between the connecting portions 26, 26 and the width details 25a, 25a, and the cross-sectional area at the bending boundary portions is the cross-sectional area and the width of the connecting portions 26, 26. It is smaller than the cross-sectional area of the details 25a, 25a. In addition, by making the plate thickness locally smaller than the other portions at the folding boundary portion, the sectional area at the bending boundary portion is reduced to the sectional area of the connecting portions 26 and 26 and the width details 25a and 25a. It may be smaller than the area.

図４（Ａ）は、摺動金具２０の固定部２５に外力が作用していない自由状態を示しているが、このとき、連結部２６，２６と固定部２５の内角は９０度を超える角度で開いており、固定部２５は、連結部２６，２６から離れるにしたがって取付け基準部２１から離れるように傾斜している。   FIG. 4A shows a free state in which an external force is not acting on the fixed portion 25 of the sliding metal fitting 20. At this time, the internal angle of the connecting portions 26, 26 and the fixed portion 25 exceeds 90 degrees. The fixing portion 25 is inclined so as to move away from the attachment reference portion 21 as it moves away from the connecting portions 26, 26.

摺動金具２０では、固定部２５に、Ｚ２方向へ窪む固定凹部２５ｂが形成されて、固定凹部２５ｂに取付け穴２５ｃが形成されている。図１（Ａ）（Ｂ）および図４に示すように、取付け穴２５ｃに挿通される取付けねじ２９が、移動ベース１１の取付け部１３に螺着されることで、摺動金具２０が移動ベース１１に固定される。   In the sliding metal fitting 20, a fixed recess 25b that is recessed in the Z2 direction is formed in the fixed portion 25, and an attachment hole 25c is formed in the fixed recess 25b. As shown in FIGS. 1A and 1B and FIG. 4, the mounting screw 29 inserted through the mounting hole 25 c is screwed to the mounting portion 13 of the moving base 11, so that the sliding bracket 20 is moved to the moving base. 11 is fixed.

図３に示すように、摺動金具２０には、固定部２５からさらにＸ１方向へ延長された上方弾性腕部２８が一体に形成されており、上方弾性腕部２８の先部に、図１（Ａ）（Ｂ）および図２に示すように、ピックアップ本体３０を上方からＺ２方向へ押圧する押圧部２８ａが一体に形成されている。摺動金具２０は、連結部２６，２６から、取付け穴２５ｃまでの範囲が前記固定部２５であり、それよりもＸ１方向に延びる部分が上方弾性腕部２８である。   As shown in FIG. 3, the sliding metal fitting 20 is integrally formed with an upper elastic arm portion 28 that is further extended from the fixed portion 25 in the X1 direction. As shown in FIGS. 2A and 2B, a pressing portion 28a that presses the pickup body 30 in the Z2 direction from above is integrally formed. In the sliding metal fitting 20, the range from the connecting portions 26, 26 to the mounting hole 25 c is the fixing portion 25, and the portion extending in the X1 direction is the upper elastic arm portion 28.

図６および図７に示すように、移動ベース１１の内部で且つ底部には、３箇所に調整凹部４１，４１，４１が一体に形成されている。図７に示すように、調整凹部４１，４１，４１は部分曲面形状であり、調整凹部４１，４１，４１は、同一の仮想球面Ｑの一部の周面に一致している。設計上は、仮想球面Ｑの中心が、対物レンズ３１の主点Ｌ０に一致している。   As shown in FIGS. 6 and 7, adjustment recesses 41, 41, 41 are integrally formed at three locations inside the movement base 11 and at the bottom. As shown in FIG. 7, the adjustment recesses 41, 41, 41 have a partially curved shape, and the adjustment recesses 41, 41, 41 coincide with a part of the peripheral surface of the same phantom spherical surface Q. In design, the center of the phantom spherical surface Q coincides with the principal point L0 of the objective lens 31.

図７に示すように、対物レンズ３１が搭載されているピックアップ本体３０には調整突起４２が３箇所に設けられており、それぞれの調整突起４２は調整凹部４１，４１，４１に摺動自在に当接している。   As shown in FIG. 7, the pickup main body 30 on which the objective lens 31 is mounted is provided with adjustment protrusions 42 at three locations, and the adjustment protrusions 42 are slidable in the adjustment recesses 41, 41, 41. It is in contact.

図６と図７に示すように、移動ベース１１のＸ１側の側部には、下側からタンゼンシャル調整ねじ４３が挿通され、タンゼンシャル調整ねじ４３が、ピックアップ本体３０に形成された雌ねじ穴に螺着されている。図６に示すように、移動ベース１１のＹ１側の側部にはラジアル調整ねじ４４が挿通されており、ラジアル調整ねじ４４が、ピックアップ本体３０に形成された雌ねじ穴に螺着されている。   As shown in FIGS. 6 and 7, a tangential adjustment screw 43 is inserted into the side portion on the X1 side of the moving base 11 from below, and the tangential adjustment screw 43 is screwed into a female screw hole formed in the pickup body 30. It is worn. As shown in FIG. 6, a radial adjustment screw 44 is inserted through the Y1 side of the moving base 11, and the radial adjustment screw 44 is screwed into a female screw hole formed in the pickup body 30.

図２に示すように、ピックアップ本体３０のＸ２側で且つＹ２側の角部は、摺動金具２０と一体に形成された押圧部２８ａによって上方から押圧され、この押圧力によって、それぞれの調整突起４２が調整凹部４１に押圧されている。この状態で、タンゼンシャル調整ねじ４３のねじ込み量を調整することで、対物レンズ３１の光軸Ｌ１のタンゼンシャル方向の傾き調整を行うことができ、ラジアル調整ねじ４４のねじ込み量を調整することで、光軸Ｌ１のラジアル方向の傾き調整を行うことができる。   As shown in FIG. 2, the corners on the X2 side and the Y2 side of the pickup main body 30 are pressed from above by a pressing portion 28a formed integrally with the sliding metal fitting 20, and each adjustment projection is caused by this pressing force. 42 is pressed by the adjustment recess 41. In this state, by adjusting the screwing amount of the tangential adjustment screw 43, the inclination of the optical axis L1 of the objective lens 31 in the tangential direction can be adjusted, and by adjusting the screwing amount of the radial adjustment screw 44, light can be adjusted. The inclination of the axis L1 in the radial direction can be adjusted.

次に、摺動金具２０の取付け方法を説明する。
図１（Ｂ）に示すように、摺動金具２０は、移動ベース１１の取付け部１３に対して、Ｘ１方向へ差し込むことで取り付けることができる。図４（Ａ）に示すように、摺動金具２０の取付け基準部２１を、取付け部１３の下面１３ａと、挟持部１４，１５の挟持面１４ａ，１５ａとの間に差込み、２つの連結部２６，２６が、取付け部１３の端面１３ｃに当たるまで、摺動金具２０をＸ１方向へ押し込む。この取付け作業で、取付け基準部２１が、取付け部１３の下面１３ａに設置されるとともに、Ｕ字形状に曲げられた変形部２２が、移動ベース１１に形成された可動空間１６内に位置する。 Next, the attachment method of the sliding metal fitting 20 is demonstrated.
As shown in FIG. 1B, the sliding metal fitting 20 can be attached to the attachment portion 13 of the moving base 11 by being inserted in the X1 direction. As shown in FIG. 4A, the mounting reference portion 21 of the sliding metal fitting 20 is inserted between the lower surface 13a of the mounting portion 13 and the clamping surfaces 14a and 15a of the clamping portions 14 and 15, and the two connecting portions. The sliding bracket 20 is pushed in the X1 direction until 26 and 26 contact the end surface 13c of the attachment portion 13. With this attachment operation, the attachment reference portion 21 is installed on the lower surface 13 a of the attachment portion 13, and the deformed portion 22 bent into a U shape is located in the movable space 16 formed in the moving base 11.

このとき、図４（Ａ）に示すように、摺動金具２０の固定部２５は、取付け部１３の上面１３ｂから浮き上がっている。固定部２５の固定凹部２５ｂ内に形成された取付け穴２５ｃに取付けねじ２９を挿入して、この取付けねじ２９を、取付け部１３に形成された雌ねじ穴に螺着すると、取付けねじ２９の頭部で、摺動金具２０の固定部２５が取付け部１３の上面１３ｂに押し付けられる。   At this time, as shown in FIG. 4A, the fixing portion 25 of the sliding metal fitting 20 is lifted from the upper surface 13 b of the mounting portion 13. When the mounting screw 29 is inserted into the mounting hole 25 c formed in the fixing recess 25 b of the fixing portion 25 and this mounting screw 29 is screwed into the female screw hole formed in the mounting portion 13, the head of the mounting screw 29 Thus, the fixed portion 25 of the sliding metal fitting 20 is pressed against the upper surface 13b of the mounting portion 13.

摺動金具２０の固定部２５が取付け部１３の上面１３ｂに押し付けられると、固定部２５のＸ２側の側部に設けられた幅細部２５ａ，２５ａと連結部２６，２６との境界に位置する折り曲げ境界部が、ほぼ直角になるように弾性変形する。このとき、取付け基準部２１は、そのＸ１側の端部が、取付け部１３の下面１３ａと挟持部１４，１５の挟持面１４ａ，１５ａとの間に挟まれている。そのため、前記弾性変形により、取付け基準部２１は、そのＸ１側の基部が挟持面１４ａ，１５ａに支えられた状態で、摺動凸部２３を有するＸ２側の先部が、取付け部１３の下面１３ａに押し付けられる。   When the fixed portion 25 of the sliding metal fitting 20 is pressed against the upper surface 13b of the mounting portion 13, it is positioned at the boundary between the width details 25a, 25a provided on the X2 side of the fixed portion 25 and the connecting portions 26, 26. The bending boundary part is elastically deformed so as to be substantially perpendicular. At this time, the X1 side end of the attachment reference portion 21 is sandwiched between the lower surface 13a of the attachment portion 13 and the clamping surfaces 14a and 15a of the clamping portions 14 and 15. Therefore, due to the elastic deformation, the attachment reference portion 21 has the X1 side base portion supported by the sandwiching surfaces 14 a and 15 a, and the X2 side tip portion having the sliding protrusion 23 is the lower surface of the attachment portion 13. Pressed against 13a.

なお、図３に示すように、摺動金具２０における幅細部２５ａ，２５ａと連結部２６，２６との境界に位置する折り曲げ境界部の断面積が、取付け基準部２１と連結部２６，２６との折り曲げ境界部の断面積よりも小さくなっている。そのため、取付けねじ２９が締め付けられたときに、幅細部２５ａ，２５ａと連結部２６，２６との境界に位置する折り曲げ境界部で、摺動金具２０が折り曲がりやすくなり、取付け基準部２１の摺動凸部２３が形成されている部分が、取付け部１３の下面１３ａから離れる現象が生じにくくなる。   As shown in FIG. 3, the cross-sectional area of the bending boundary portion located at the boundary between the width details 25 a, 25 a and the connecting portions 26, 26 in the sliding metal fitting 20 is the attachment reference portion 21 and the connecting portions 26, 26. It is smaller than the cross-sectional area of the bending boundary part. For this reason, when the mounting screw 29 is tightened, the sliding metal fitting 20 is easily bent at the bending boundary portion located at the boundary between the width details 25a and 25a and the connecting portions 26 and 26, and the sliding of the mounting reference portion 21 is facilitated. A phenomenon in which the portion where the moving convex portion 23 is formed is less likely to be separated from the lower surface 13a of the attachment portion 13 is caused.

よって、取付け基準部２１の摺動凸部２３が形成されている部分が、取付け部１３の下面１３ａに密着し、移動ベース１１上での摺動凸部２３の位置を、常に高精度に決めることが可能となる。   Therefore, the portion of the mounting reference portion 21 where the sliding convex portion 23 is formed is in close contact with the lower surface 13a of the mounting portion 13, and the position of the sliding convex portion 23 on the moving base 11 is always determined with high accuracy. It becomes possible.

また、摺動金具２０が移動ベース１１に取り付けられた状態で、摺動金具２０に形成されている変形部２２は、移動ベース１１に形成された可動空間１６内において自由に弾性変形できるようになる。   Further, in a state where the sliding bracket 20 is attached to the moving base 11, the deformation portion 22 formed on the sliding bracket 20 can be freely elastically deformed in the movable space 16 formed on the moving base 11. Become.

また、摺動金具２０が移動ベース１１に取り付けられる際、摺動金具２０の上方弾性腕部２８の先部に設けられた押圧部２８ａが、ピックアップ本体３０の上面に当接させられ、この状態で、固定部２５が取付けねじ２９によって、取付け部１３の上面１３ｂに押し付けられる。よって、上方弾性腕部２８が弾性変形し、この変形による弾性力により、押圧部２８ａがピックアップ本体３０を上方から押圧する。   Further, when the sliding bracket 20 is attached to the moving base 11, the pressing portion 28a provided at the tip of the upper elastic arm portion 28 of the sliding bracket 20 is brought into contact with the upper surface of the pickup body 30, and this state Thus, the fixing portion 25 is pressed against the upper surface 13 b of the mounting portion 13 by the mounting screw 29. Therefore, the upper elastic arm portion 28 is elastically deformed, and the pressing portion 28a presses the pickup body 30 from above by the elastic force due to the deformation.

この光ピックアップ装置１では、移動ベース１１の一方の側部において２箇所に設けられた軸受穴１２ａ，１２ｂが、スクリュー軸２の外周面に最小の隙間で挿通される。移動ベース１１の他方の側部に設けられた受け部１８では、摺動金具２０に形成された摺動凸部２３が、ガイド軸３のＺ１側に向く上面に当接し、可動空間１６内で弾性変形可能な弾性腕部２２ｃに形成された弾圧凸部２４が、ガイド軸３のＺ２側に向く下面に弾圧される。その結果、受け部１８では、摺動凸部２３とガイド軸３とが確実に当接し、スクリュー軸２の回転力によって、移動ベース１１に送り力が作用するときに、摺動凸部２３とガイド軸３とが摺動する。同様に、弾圧凸部２４とガイド軸３とが摺動する。   In this optical pickup device 1, bearing holes 12 a and 12 b provided at two locations on one side of the moving base 11 are inserted into the outer peripheral surface of the screw shaft 2 with a minimum clearance. In the receiving portion 18 provided on the other side portion of the movable base 11, the sliding convex portion 23 formed on the sliding bracket 20 abuts on the upper surface of the guide shaft 3 facing the Z <b> 1 side, and within the movable space 16. The elastic convex portion 24 formed on the elastically deformable elastic arm portion 22c is elastically pressed to the lower surface of the guide shaft 3 facing the Z2 side. As a result, in the receiving portion 18, when the sliding convex portion 23 and the guide shaft 3 are reliably in contact with each other and the feed force acts on the moving base 11 by the rotational force of the screw shaft 2, The guide shaft 3 slides. Similarly, the elastic convex part 24 and the guide shaft 3 slide.

この実施の形態の光ピックアップ装置１では、移動ベース１１に摺動金具２０を差込み、摺動金具２０の一箇所を取付けねじ２９で固定するだけで、摺動金具２０を移動ベース１１に位置決めして固定することができる。また、取付けねじ２９を締め付けることで、摺動凸部２３を、取付け部１３の下面１３ａに密着させることができるため、ガイド軸３との摺動部を、移動ベース１１上で常に同じ位置に位置決めできるようになる。よって、移動ベース１１のスクリュー軸２を中心とする回転方向での姿勢のばらつきの発生を抑制できる。   In the optical pickup device 1 of this embodiment, the sliding bracket 20 is positioned on the moving base 11 simply by inserting the sliding bracket 20 into the moving base 11 and fixing one position of the sliding bracket 20 with the mounting screw 29. Can be fixed. Also, by tightening the mounting screw 29, the sliding convex portion 23 can be brought into close contact with the lower surface 13a of the mounting portion 13, so that the sliding portion with the guide shaft 3 is always at the same position on the moving base 11. It becomes possible to position. Accordingly, it is possible to suppress the occurrence of variation in posture in the rotation direction around the screw shaft 2 of the moving base 11.

さらに、弾性腕部２２ｃを別の部材として取り付ける必要がなく、さらに、ピックアップ本体３０を上方から押圧する押圧部も別の部材として取り付ける必要がないため、部品点数を削減することができる。   Furthermore, there is no need to attach the elastic arm portion 22c as a separate member, and there is no need to attach a pressing portion that presses the pickup body 30 from above as another member, so that the number of parts can be reduced.

（Ａ）は本発明の実施の形態の光ピックアップ装置を示す斜視図、（Ｂ）は前記実施の形態の光ピックアップ装置の移動ベースと摺動金具を分離して示す分解斜視図、(A) is a perspective view showing an optical pickup device according to an embodiment of the present invention, (B) is an exploded perspective view showing a moving base and a sliding bracket of the optical pickup device according to the embodiment separately, 図１の光ピックアップ装置の平面図、FIG. 1 is a plan view of the optical pickup device of FIG. 摺動金具を示す斜視図、A perspective view showing a sliding bracket, 移動ベースへの摺動金具の取付け構造を示す図１（Ａ）（Ｂ）のＩＶ矢視の部分側面図であり、（Ａ）は摺動金具を移動ベースに差し込んだ状態を示し、（Ｂ）は摺動金具を取付けねじで固定した状態を示す、FIGS. 1A and 1B are partial side views showing the attachment structure of the sliding bracket to the moving base, as viewed in the direction of arrow IV in FIGS. 1A and 1B, and FIG. ) Shows the state where the sliding bracket is fixed with mounting screws. 図４（Ｂ）のＶ矢視の部分端面図、FIG. 4B is a partial end view taken along the arrow V in FIG. ピックアップ本体を取り外した移動ベースを示す平面図、A plan view showing the moving base with the pickup body removed, 光ピックアップ装置の部分断面図であり、ピックアップ本体の光軸調整機構を示す断面図It is a fragmentary sectional view of an optical pickup device, and is a sectional view showing an optical axis adjustment mechanism of a pickup body

符号の説明Explanation of symbols

１ 光ピックアップ装置
１０ 移動部
１１ 移動ベース
１２ 基準軸受部
１２ａ，１２ｂ 軸受穴
１３ 取付け部
１４，１５ 挟持部
１８ 受け部
２０ 摺動金具
２１ 取付け基準部
２２ 変形部
２２ｃ 弾性腕部
２３ 摺動凸部
２４ 弾圧凸部
２５ 固定部
２６ 連結部
２７ 凹部
２８ 上方弾性腕部
２８ａ 押圧部
３０ ピックアップ本体
３１ 対物レンズ
４１ 調整凹部
４２ 調整突起
４３ タンゼンシャル調整ねじ
４４ ラジアル調整ねじ DESCRIPTION OF SYMBOLS 1 Optical pick-up apparatus 10 Moving part 11 Moving base 12 Reference bearing part 12a, 12b Bearing hole 13 Attaching part 14, 15 Holding part 18 Receiving part 20 Sliding metal fitting 21 Mounting reference part 22 Deformation part 22c Elastic arm part 23 Sliding convex part 24 elastic convex part 25 fixing part 26 connecting part 27 concave part 28 upper elastic arm part 28a pressing part 30 pickup body 31 objective lens 41 adjusting concave part 42 adjusting projection 43 tangential adjusting screw 44 radial adjusting screw

Claims (8)

直線状に延びるガイド部材と、前記ガイド部材に案内されて情報が記録されたディスクの面に沿って移動する移動ベースと、前記移動ベースに搭載されてディスクに光束を集光させる対物レンズとを有する光ピックアップ装置において、
前記移動ベースには金属板製の摺動金具が固定されており、前記摺動金具には、前記ガイド部材を摺動する摺動部と、前記摺動部と逆の側から前記ガイド部材に弾性力を有して圧接する弾性腕部とが一体に形成されていることを特徴とする光ピックアップ装置。 A linearly extending guide member; a moving base that moves along the surface of the disc on which information is recorded by being guided by the guide member; and an objective lens that is mounted on the moving base and focuses the light beam on the disc. In an optical pickup device having
A metal plate sliding metal fitting is fixed to the moving base. The sliding metal fitting includes a sliding portion that slides the guide member, and a guide member from the side opposite to the sliding portion. An optical pickup device characterized in that an elastic arm portion that has elastic force and press-contacts is integrally formed. 前記摺動金具には、その一部が前記摺動部となる取付け基準部と、前記弾性腕部と逆の側で前記取付け基準部に間隔を空けて対向する固定部と、前記取付け基準部と前記固定部とを連結する連結部とを有し、前記弾性腕部は、前記連結部から離れた位置で前記取付け基準部から折り曲げられて、前記取付け基準部に対向しており、
前記移動ベースには、前記摺動金具が取り付けられる取付け部が形成され、前記固定部が前記取付け部の上面に設置され、前記取付け基準部が前記取付け部の下面に設置されて、前記固定部が前記取付け部の上面に固定されている請求項１記載の光ピックアップ装置。 The sliding bracket includes an attachment reference portion, a part of which is the sliding portion, a fixed portion facing the attachment reference portion on the opposite side to the elastic arm portion, and the attachment reference portion. And a connecting portion that connects the fixed portion, and the elastic arm portion is bent from the mounting reference portion at a position away from the connecting portion, and faces the mounting reference portion.
The moving base is formed with an attachment portion to which the sliding metal fitting is attached, the fixing portion is installed on the upper surface of the attachment portion, the attachment reference portion is installed on the lower surface of the attachment portion, and the fixing portion 2. The optical pickup device according to claim 1, wherein is fixed to an upper surface of the mounting portion. 前記移動ベースには、前記取付け部の下面に間隔を空けて対向する挟持部が設けられ、前記取付け基準部が、前記取付け部と前記挟持部の間に挟みこまれている請求項２記載の光ピックアップ装置。   3. The moving base is provided with a holding portion that is opposed to the lower surface of the mounting portion with a space therebetween, and the mounting reference portion is sandwiched between the mounting portion and the holding portion. Optical pickup device. 前記摺動金具が前記移動ベースに取り付けられていない自由状態において、前記固定部は、前記連結部から離れるにしたがって前記取付け基準部から遠ざかるように傾斜しており、前記固定部が、前記連結部から離れた位置で前記移動シャーシの前記取付け部に固定されて、前記取付け基準部が、前記取付け部の下面に当接させられている請求項３記載の光ピックアップ装置。   In a free state where the sliding metal fitting is not attached to the moving base, the fixing portion is inclined so as to move away from the attachment reference portion as the distance from the connecting portion increases, and the fixing portion is connected to the connecting portion. The optical pickup device according to claim 3, wherein the attachment reference portion is fixed to the attachment portion of the movable chassis at a position away from the attachment portion, and the attachment reference portion is brought into contact with a lower surface of the attachment portion. 前記摺動金具は、前記固定部と前記連結部との境界部の断面積が、前記取付け基準部と前記連結部との境界部の断面積よりも小さく形成されている請求項３または４記載の光ピックアップ装置。   5. The slide fitting is formed such that a cross-sectional area of a boundary portion between the fixed portion and the connecting portion is smaller than a cross-sectional area of a boundary portion between the attachment reference portion and the connecting portion. Optical pickup device. 前記取付け基準部の一部に、前記弾性腕に向けて突出する凸部が形成され、この凸部が前記摺動部とされている請求項２ないし５のいずれかに記載の光ピックアップ装置。   6. The optical pickup device according to claim 2, wherein a convex portion projecting toward the elastic arm is formed on a part of the attachment reference portion, and the convex portion serves as the sliding portion. 前記移動ベースには、前記対物レンズを搭載したピックアップ本体が搭載されており、前記摺動金具には、前記ピックアップ本体を前記移動ベースに押圧する押圧部が一体に形成されている請求項１ないし６のいずれかに記載の光ピックアップ装置。   The pick-up main body carrying the objective lens is mounted on the moving base, and a pressing portion for pressing the pick-up main body against the moving base is integrally formed on the sliding metal fitting. The optical pickup device according to claim 6. 前記移動ベースには、前記押圧部による押圧側と逆側から挿入されて前記ピックアップ本体に螺着された調整ねじが設けられており、前記調整ねじのねじ込み量を可変することで、前記対物レンズの光軸の倒れ調整が可能とされている請求項７記載の光ピックアップ装置。   The moving base is provided with an adjusting screw inserted from the side opposite to the pressing side by the pressing portion and screwed to the pickup body, and the objective lens can be changed by varying the screwing amount of the adjusting screw. The optical pickup device according to claim 7, wherein the tilt of the optical axis can be adjusted.
JP2006105089A 2006-04-06 2006-04-06 Optical pickup device Active JP4467538B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009163821A (en) * 2008-01-07 2009-07-23 Funai Electric Co Ltd Disk device
WO2017051491A1 (en) * 2015-09-24 2017-03-30 ソニー株式会社 Optical pickup unit and optical disc drive

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009163821A (en) * 2008-01-07 2009-07-23 Funai Electric Co Ltd Disk device
WO2017051491A1 (en) * 2015-09-24 2017-03-30 ソニー株式会社 Optical pickup unit and optical disc drive

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