JPH1064030A - Magnetic head adjustment mechanism for magnetic recording/reproducing device - Google Patents
Magnetic head adjustment mechanism for magnetic recording/reproducing deviceInfo
- Publication number
- JPH1064030A JPH1064030A JP22240596A JP22240596A JPH1064030A JP H1064030 A JPH1064030 A JP H1064030A JP 22240596 A JP22240596 A JP 22240596A JP 22240596 A JP22240596 A JP 22240596A JP H1064030 A JPH1064030 A JP H1064030A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic head
- magnetic
- upper plate
- plane
- adjusting
- 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.)
- Pending
Links
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ビデオテープレコ
ーダ等の磁気記録再生装置に於けるオーディオ・コント
ロールヘッドの取り付け調整機構に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for adjusting the mounting of an audio control head in a magnetic recording / reproducing apparatus such as a video tape recorder.
【０００２】[0002]
【従来の技術】この種磁気ヘッドの取り付け調整機構と
しては、例えば公開特許公報 特開平４―６９８１０号
（Ｇ１１Ｂ ５/５６）が挙げられる。該当の公報で開
示された技術は、図６に示すようにベース下板１とベー
ス上板２とを板バネ機能を持つ連結部１'で一体に形成
された台板３のベース上板２に磁気ヘッド４を取り付
け、あおり調整ネジ５をベース上板２にねじ込み、その
先端をベース下板１に当接させ、磁気テープ６に対する
磁気ヘッド４の前後方向の傾き調整を行う。ベース上板
２は、ピボット支点７を中心に上下に可動する。磁気ヘ
ッド４の左右の傾き調整、即ちアジマス調整は、ベース
上板２を貫通してベース下板１にねじ込まれるアジマス
調整ネジ８により行われる。何れの調整時に於ける調整
ネジ３、８のねじ込み、或いは反ねじ込みによるベース
上板２の傾き作用も、連結部１'の板バネ機能により、
吸収され、ネジ３、８のゆるみは生じない。尚、９はシ
ャーシ１０に対して台板３を上下させるための磁気ヘッ
ド４の高さ調整用折曲片である。2. Description of the Related Art An example of a mounting adjustment mechanism for a magnetic head of this type is disclosed in Japanese Patent Laid-Open No. 4-69810 (G11B 5/56). The technique disclosed in the publication discloses a base upper plate 2 of a base plate 3 in which a base lower plate 1 and a base upper plate 2 are integrally formed by a connecting portion 1 'having a leaf spring function as shown in FIG. Then, a tilt adjustment screw 5 is screwed into the base upper plate 2, and the tip of the screw is brought into contact with the base lower plate 1 to adjust the inclination of the magnetic head 4 with respect to the magnetic tape 6 in the front-rear direction. The base upper plate 2 is movable up and down around the pivot fulcrum 7. The right and left inclination adjustment of the magnetic head 4, that is, the azimuth adjustment, is performed by an azimuth adjustment screw 8 which passes through the upper base plate 2 and is screwed into the lower base plate 1. The screwing of the adjusting screws 3 and 8 in any adjustment or the tilting action of the base upper plate 2 due to the counter screwing is performed by the leaf spring function of the connecting portion 1 '.
It is absorbed and the screws 3 and 8 do not come loose. Reference numeral 9 denotes a bent piece for adjusting the height of the magnetic head 4 for moving the base plate 3 up and down with respect to the chassis 10.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上述の
構成では、ベース下板１にピボット支点７を設け、ベー
ス上板２に当接されているので、磁気テープ６に対する
磁気ヘッド４の高さ調整を行う場合、該当公開公報の第
１図に示され、明細書中では記述されていないが、図６
に示す図番９が磁気ヘッド高さ調整用の折曲片であり、
この折曲片９と別途調整ネジ（図示せず）を必要とす
る。又、連結部１'に板バネ機能を持たせるためのプレ
ス加工が施されている点、又バネ力を上下板を密着させ
る方向へ常時働かせるための曲げ金型を必要とし、金型
加工が複雑になる点、及びピボット７に対するベース上
板２の孔を位置合わせために曲げ金型の精度が要求され
ると云った課題がある。However, in the above configuration, the pivot fulcrum 7 is provided on the base lower plate 1 and is in contact with the base upper plate 2, so that the height of the magnetic head 4 with respect to the magnetic tape 6 can be adjusted. In the case of performing the above, it is shown in FIG. 1 of the relevant publication and is not described in the specification.
FIG. 9 shows a bent piece for adjusting the height of the magnetic head.
This bending piece 9 and an adjusting screw (not shown) are separately required. In addition, a press working for imparting a leaf spring function to the connecting portion 1 'is required, and a bending mold for constantly applying a spring force in a direction in which the upper and lower plates are brought into close contact with each other is required. There is a problem that it becomes complicated and that the precision of the bending mold is required to align the hole of the base upper plate 2 with the pivot 7.
【０００４】本発明は、高さ調整用の折曲片９を必要と
せず、プレス加工性の良い、安価な磁気ヘッド調整機構
を提供することを目的とする。An object of the present invention is to provide an inexpensive magnetic head adjustment mechanism which does not require the bent piece 9 for height adjustment and has good press workability.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記課題を解
決するために、上板と下板と連結部からなる断面コ字状
の台板と、上板に取着される磁気ヘッドと、該磁気ヘッ
ドの姿勢を調整する２本の調整ネジとで構成し、上板と
下板は互いに開く方向に弾性力を備えた構成とする。
又、連結部を磁気テープが磁気ヘッドに摺接走行する側
に配備する。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a base plate having a U-shaped cross section composed of an upper plate, a lower plate, and a connecting portion, and a magnetic head attached to the upper plate. And two adjusting screws for adjusting the attitude of the magnetic head, and the upper plate and the lower plate have elasticity in the direction in which they open.
The connecting portion is provided on the side where the magnetic tape slides and runs on the magnetic head.
【０００６】更に、２本の調整ネジの内の一方のネジ
は、磁気テープ走行平面に直交する磁気ヘッドの磁気ギ
ャップを含む略垂直平面内に配備され、該一方のネジと
他方のネジとのそれぞれの中心を含む面が前記垂直平面
に直交する面内位置するうに配備する。又、連結部の幅
方向の中心と、一方の調整ネジの中心を結ぶ略垂直面内
に磁気ギャップが配備されている構成とする。又、一方
の調整ネジは磁気ヘッドのあおり（前後の傾き）調整ネ
ジであり、他方の調整ネジは磁気ヘッドのアジマス（左
右の傾き）調整ネジである構成とする。上板の平面は、
下板の平面に対して少許傾斜した傾斜面に形成する。従
って、上板の平面は磁気テープの走行する仮想平面に対
して少許傾いた傾斜平面に形成された構成とする。Further, one of the two adjusting screws is provided in a substantially vertical plane including a magnetic gap of the magnetic head orthogonal to the magnetic tape running plane, and is provided between the one screw and the other screw. The plane including the respective centers is disposed so as to be located in a plane orthogonal to the vertical plane. Also, the magnetic gap is provided in a substantially vertical plane connecting the center of the connecting portion in the width direction and the center of one of the adjusting screws. Further, one of the adjusting screws is a tilt (front-back tilt) adjusting screw of the magnetic head, and the other adjusting screw is an azimuth (left-right tilt) adjusting screw of the magnetic head. The plane of the upper plate is
It is formed on an inclined surface slightly inclined with respect to the plane of the lower plate. Therefore, the plane of the upper plate is formed as an inclined plane slightly inclined with respect to the virtual plane on which the magnetic tape runs.
【０００７】[0007]
【発明の実施の形態】以下図面に従い、本発明の実施の
形態について説明する。図１は外観分解斜視図、図２は
平面図、図３は正面図、図４及び図５は側面図である。
図において、従来例と同一部分には同一番号を付し、そ
の説明を省略する。図１において、ベース下板１には、
ネジ孔１a、透孔１b、１c、（図では２ヶ所）及びＸ値
（回転シリンダ出口から磁気ヘッドギャップまでの磁気
テープパスの長さ）調整用の軸孔１dが削切され、ベー
ス上板２にはネジ孔２aと透孔２b、２cが設けられ、両
ベース板１,２は連結部１１で一体に形成され、両ベー
ス板１,２間の角度は、図示のようにθ＞９０゜に設定
して開き気味に曲げ加工している。該連結部１１は、特
別な加工は成されず、ベース板１,２と同一の板厚に形
成される。４aは磁気ヘッド４の磁気ギャップである。
１０aはシャーシ１０上の台板３の取り付け用ボス、１
０bはＸ値調整用の回転軸、１２は台板３取り付け用ネ
ジである。以下、本発明の磁気ヘッド調整機構について
説明する。先ず、磁気ヘッド４をベース上板２の透孔２
cにネジ（図示せず）等で固着し、台板３をボス１０a、
１０a及び回転軸１０bに当てがって、ネジ１２、１２に
て固定する。その場合、上述のＸ値の調整を行う。次に
あおり調整ネジ５を透孔２bに貫挿し、ベース下板１の
ネジ孔１aにねじ込む。上述のように、ベース上板２の
開こうとする反力を利用してベース下板１に対するベー
ス上板２の位置関係を保持することが出来、連結部１１
を基準とした磁気ヘッド４の高さ調整が可能となる。こ
の時、台板３の連結部１１には特別な加工は施されてお
らず、ベース下板１とベース上板２とが開き気味に形成
しているので、金型加工も容易に出来る。図４及び図５
を参照しながら、磁気ヘッド４のあおり調整について説
明する。図４に示すように、調整ネジ５を矢印Ａ（反時
計）方向へ回すと、ネジ５はゆるみ方向になるので、ベ
ース上板２は連結片１１を支点にして自由端側が持ち上
げられる。従って、磁気ヘッド４は前方へ傾きながらベ
ース下板１に対して矢印Ｂ方向へ上昇する。このこと
は、磁気テープ６の上端側で磁気ヘッド４の磁気テープ
６に対する当たりが増加するので、磁気テープ６は磁気
ヘッド４に対して相対的に矢印Ｃ方向へ下降することに
なる。図５に示すように逆に調整ネジ５を矢印Ｄ（時
計）方向に回すと、磁気ヘッド４は矢印方向へ下降す
る。即ち、磁気ヘッド４は後方へ傾きながら下降する。
従って、磁気テープ６の下端側が緊張し、該磁気テープ
６はせり上がり現象を生じ、磁気ヘッド４に対して相対
的に矢印Ｃ方向へ上昇することになる。斯くて、磁気テ
ープ６に対する磁気ヘッド４のあおり調整は、少ない調
整量で容易に行うことを可能としている。尚、調整ネジ
５の位置は、図２に示すように、磁気ヘッド４の磁気ギ
ャップ４aと調整ネジ５との中心を結ぶ線を磁気テープ
６の走行面に対して直交する仮想垂直平面１３内に近似
する位置に配備する。該仮想垂直平面１３内に連結部１
１の幅方向の略中心が位置するように台板３を形成する
のがベターである（図２参照）。磁気ヘッド４のアジマ
ス調整は、ベース上板２にねじ込まれたアジマス調整ネ
ジ８の先端をベース下板１の上面に当接させ、該調整ネ
ジ８により行う。台板３のプレス加工時、ベース上板２
のネジ孔２a側を透孔２b側より下降気味に、即ち、左方
向に傾くように傾向付けて形成し、未調整時は図３に示
すように、磁気ヘッド４が左傾した状態にしておく。こ
の状態における上板２の平面は、磁気テープ６の走行方
向仮想水平面に対して少許傾いた傾斜平面になってい
る。調整ネジ８を締め付ける方向（時計方向）に回すと
ベース上板２が持ち上げられ、磁気ヘッド４は図面右方
向へ傾斜する。調整ネジ８を緩める方向（反時計方向）
へ回すと、磁気ヘッド４は左方向へ傾き、磁気テープ６
に対する磁気ギャップ４aの姿勢調整が可能である。こ
の時、ベース上板２はベース下板１に対してあおり調整
ネジ５により固定されているので、アジマス調整ネジ８
の調整による磁気ヘッド４の高さ、及びあおりには何ら
の影響も与えない。尚、調整ネジ８と調整ネジ５との中
心を結ぶ線１４が、仮想垂直平面１３に直交する垂直平
面内に略近似する位置に調整ネジ８を配備するのがベタ
ーであるが、これに限定されることはない。Embodiments of the present invention will be described below with reference to the drawings. 1 is an exploded perspective view, FIG. 2 is a plan view, FIG. 3 is a front view, and FIGS. 4 and 5 are side views.
In the figure, the same parts as those of the conventional example are denoted by the same reference numerals, and description thereof will be omitted. In FIG. 1, a base lower plate 1 includes
The screw hole 1a, the through holes 1b, 1c (two locations in the figure) and the shaft hole 1d for adjusting the X value (the length of the magnetic tape path from the rotary cylinder outlet to the magnetic head gap) are cut off, and the base upper plate is cut off. 2 is provided with a screw hole 2a and a through hole 2b, 2c, the two base plates 1, 2 are integrally formed at the connecting portion 11, and the angle between the two base plates 1, 2 is θ> 90 as shown in the figure. Set to ゜ and bend slightly to open. The connecting portion 11 is formed with the same thickness as the base plates 1 and 2 without special processing. 4a is a magnetic gap of the magnetic head 4.
10a is a boss for mounting the base plate 3 on the chassis 10, 1
0b is a rotation axis for adjusting the X value, and 12 is a screw for attaching the base plate 3. Hereinafter, the magnetic head adjustment mechanism of the present invention will be described. First, the magnetic head 4 is inserted into the through hole 2 of the base upper plate 2.
c, with screws (not shown) or the like.
10a and the rotating shaft 10b, and fixed by screws 12,12. In that case, the adjustment of the X value is performed. Next, the tilt adjusting screw 5 is inserted into the through hole 2b and screwed into the screw hole 1a of the base lower plate 1. As described above, the positional relationship of the base upper plate 2 with respect to the base lower plate 1 can be maintained by utilizing the reaction force of the base upper plate 2 to be opened.
, The height of the magnetic head 4 can be adjusted. At this time, no special processing is applied to the connecting portion 11 of the base plate 3, and the base lower plate 1 and the base upper plate 2 are formed to be slightly open, so that die processing can be easily performed. 4 and 5
The tilt adjustment of the magnetic head 4 will be described with reference to FIG. As shown in FIG. 4, when the adjusting screw 5 is turned in the direction of the arrow A (counterclockwise), the screw 5 is loosened, so that the free end of the base upper plate 2 is lifted with the connecting piece 11 as a fulcrum. Accordingly, the magnetic head 4 rises in the direction of arrow B with respect to the base lower plate 1 while tilting forward. This means that the contact of the magnetic head 4 with the magnetic tape 6 at the upper end side of the magnetic tape 6 increases, so that the magnetic tape 6 descends relative to the magnetic head 4 in the direction of arrow C. When the adjusting screw 5 is turned in the direction of the arrow D (clockwise) as shown in FIG. 5, the magnetic head 4 is lowered in the direction of the arrow. That is, the magnetic head 4 descends while tilting backward.
Accordingly, the lower end side of the magnetic tape 6 is tensioned, and the magnetic tape 6 rises and rises in the direction of arrow C relative to the magnetic head 4. Thus, the tilt adjustment of the magnetic head 4 with respect to the magnetic tape 6 can be easily performed with a small adjustment amount. The position of the adjusting screw 5 is, as shown in FIG. 2, a line connecting the center of the magnetic gap 4 a of the magnetic head 4 and the adjusting screw 5 within an imaginary vertical plane 13 orthogonal to the running surface of the magnetic tape 6. Deploy at a location similar to. The connecting portion 1 in the virtual vertical plane 13
It is better to form the base plate 3 such that the center of the base plate 1 is positioned substantially in the width direction (see FIG. 2). The azimuth adjustment of the magnetic head 4 is performed by bringing the tip of an azimuth adjustment screw 8 screwed into the base upper plate 2 into contact with the upper surface of the base lower plate 1 and using the adjustment screw 8. When pressing the base plate 3, the base upper plate 2
The screw head 2a is formed so as to be inclined downward from the through hole 2b, that is, inclined to the left, and the magnetic head 4 is left inclined as shown in FIG. 3 when not adjusted. . The plane of the upper plate 2 in this state is an inclined plane slightly inclined with respect to the virtual horizontal plane in the running direction of the magnetic tape 6. When the adjusting screw 8 is turned in the tightening direction (clockwise), the base upper plate 2 is lifted, and the magnetic head 4 is inclined rightward in the drawing. Loosening adjustment screw 8 (counterclockwise)
The magnetic head 4 tilts to the left, and the magnetic tape 6
Of the magnetic gap 4a can be adjusted. At this time, since the base upper plate 2 is fixed to the base lower plate 1 by the tilt adjustment screw 5, the azimuth adjustment screw 8
Does not affect the height and tilt of the magnetic head 4 due to the adjustment. It is better to dispose the adjusting screw 8 at a position where a line 14 connecting the centers of the adjusting screw 8 and the adjusting screw 5 is approximately similar to a vertical plane orthogonal to the virtual vertical plane 13, but is not limited thereto. It will not be done.
【０００８】[0008]
【発明の効果】本発明によれば、従来必要とされた磁気
ヘッドの高さ調整用の特殊な部材を必要とせず、磁気ヘ
ッド取り付け用の台板を曲げ加工による板金の曲げ弾性
力を利用することにより、圧縮バネを不要とし、僅か２
本の調整ネジにより磁気ヘッドのあおり及びアジマス調
整及び磁気ヘッドの高さ調整も可能となり、部品点数の
削減、組立作業工数の削減が図られ、その効果は大であ
る。According to the present invention, there is no need for a special member for adjusting the height of a magnetic head, which has been conventionally required, and the bending elastic force of a sheet metal obtained by bending a base plate for mounting a magnetic head is used. This eliminates the need for a compression spring,
The adjustment screw of the book also enables the adjustment of the tilt and azimuth of the magnetic head and the height of the magnetic head, thereby reducing the number of parts and the number of assembling work steps, and the effect is great.
【図１】外観分解斜視図である。FIG. 1 is an external exploded perspective view.
【図２】平面図である。FIG. 2 is a plan view.
【図３】正面図である。FIG. 3 is a front view.
【図４】側面図である。FIG. 4 is a side view.
【図５】側面図である。FIG. 5 is a side view.
【図６】従来例の外観斜視図である。FIG. 6 is an external perspective view of a conventional example.
１ ベース下板 ２ ベース上板 ３ 台板 ４ 磁気ヘッド ５ あおり調整ネジ ８ アジマス調整ネジ １１ 連結部 １３ 仮想垂直平面 １４ 仮想垂直平面 DESCRIPTION OF SYMBOLS 1 Base lower plate 2 Base upper plate 3 Base plate 4 Magnetic head 5 Tilt adjustment screw 8 Azimuth adjustment screw 11 Connecting part 13 Virtual vertical plane 14 Virtual vertical plane
Claims (7)
の台板と、前記上板に取着される磁気ヘッドと、該磁気
ヘッドの姿勢を調整する２本の調整ネジとからなり、前
記上板と下板は互いに開く方向に弾性力を備えているこ
とを特徴とする磁気記録再生装置の磁気ヘッド調整機
構。1. A base plate having a U-shaped cross section including an upper plate, a lower plate, and a connecting portion, a magnetic head attached to the upper plate, and two adjusting screws for adjusting a posture of the magnetic head. A magnetic head adjusting mechanism for a magnetic recording and reproducing apparatus, wherein the upper plate and the lower plate have an elastic force in a direction in which they are opened from each other.
する側に前記台板の前記連結部を配備することを特徴と
する請求項１の磁気記録再生装置の磁気ヘッド調整機
構。2. The magnetic head adjusting mechanism according to claim 1, wherein the connecting portion of the base plate is provided on a side where the magnetic tape slides and runs on the magnetic head.
磁気テープ走行平面に直交する前記磁気ヘッドの磁気ギ
ャップを含む略垂直平面内に配備され、前記一方のネジ
と他方のネジとのそれぞれの中心を含む面が前記垂直平
面に直交する面内に配備されていることを特徴とする請
求項１乃至２に記載の磁気記録再生装置の磁気ヘッド調
整機構。3. One of the two adjustment screws is provided in a substantially vertical plane including a magnetic gap of the magnetic head orthogonal to a magnetic tape running plane, and the one screw and the other screw are arranged in a substantially vertical plane. 3. A magnetic head adjusting mechanism for a magnetic recording and reproducing apparatus according to claim 1, wherein a plane including respective centers of the magnetic recording and reproducing apparatuses is arranged in a plane orthogonal to the vertical plane.
の調整ネジの中心を結ぶ略垂直面内に前記磁気ギャップ
が配備されていることを特徴とする請求項３に記載の磁
気記録再生装置の磁気ヘッド調整機構。4. The magnetic recording according to claim 3, wherein the magnetic gap is provided in a substantially vertical plane connecting a center in a width direction of the connecting portion and a center of the one adjusting screw. A magnetic head adjustment mechanism for the playback device.
あおり（前後の傾き）調整ネジであり、前記他方の調整
ネジは前記磁気ヘッドのアジマス（左右の傾き）調整ネ
ジであることを特徴とする請求項１乃至４に記載の磁気
記録再生装置の磁気ヘッド調整機構。5. The magnetic head according to claim 1, wherein the one adjusting screw is a tilt (front-back tilt) adjusting screw of the magnetic head, and the other adjusting screw is an azimuth (left-right tilt) adjusting screw of the magnetic head. A magnetic head adjusting mechanism for a magnetic recording / reproducing apparatus according to any one of claims 1 to 4.
傾斜させた平面に形成されていることを特徴とする請求
項１乃至５に記載の磁気記録再生装置の磁気ヘッド調整
機構。6. A magnetic head adjusting mechanism according to claim 1, wherein said upper plate is formed on a plane slightly inclined with respect to a plane of said lower plate.
面に直交する水平面に対して少許傾斜した傾斜面に形成
されていることを特徴とする請求項６に記載の磁気記録
再生装置の磁気ヘッド調整機構。7. The magnetic recording / reproducing apparatus according to claim 6, wherein a plane of the upper plate is formed as an inclined surface slightly inclined with respect to a horizontal plane orthogonal to the magnetic tape running surface. Magnetic head adjustment mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22240596A JPH1064030A (en) | 1996-08-23 | 1996-08-23 | Magnetic head adjustment mechanism for magnetic recording/reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22240596A JPH1064030A (en) | 1996-08-23 | 1996-08-23 | Magnetic head adjustment mechanism for magnetic recording/reproducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1064030A true JPH1064030A (en) | 1998-03-06 |
Family
ID=16781870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22240596A Pending JPH1064030A (en) | 1996-08-23 | 1996-08-23 | Magnetic head adjustment mechanism for magnetic recording/reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1064030A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6885524B2 (en) * | 2001-09-18 | 2005-04-26 | Lg Electronics Inc. | Audio/control head assembly of magnetic recording and reproducing device |
| JP2009238272A (en) * | 2008-03-26 | 2009-10-15 | Kenwood Corp | Mounting structure of disk device |
| JP2015045673A (en) * | 2013-08-27 | 2015-03-12 | カシオ計算機株式会社 | Light guide unit and projector |
| JP2017211671A (en) * | 2017-08-23 | 2017-11-30 | カシオ計算機株式会社 | Light guide unit and projector |
-
1996
- 1996-08-23 JP JP22240596A patent/JPH1064030A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6885524B2 (en) * | 2001-09-18 | 2005-04-26 | Lg Electronics Inc. | Audio/control head assembly of magnetic recording and reproducing device |
| JP2009238272A (en) * | 2008-03-26 | 2009-10-15 | Kenwood Corp | Mounting structure of disk device |
| JP2015045673A (en) * | 2013-08-27 | 2015-03-12 | カシオ計算機株式会社 | Light guide unit and projector |
| JP2017211671A (en) * | 2017-08-23 | 2017-11-30 | カシオ計算機株式会社 | Light guide unit and projector |
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