JP3567514B2

JP3567514B2 - Lid opening and closing device

Info

Publication number: JP3567514B2
Application number: JP00843395A
Authority: JP
Inventors: 伸彦林; 毅彦井手
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 1995-01-23
Filing date: 1995-01-23
Publication date: 2004-09-22
Anticipated expiration: 2019-09-22
Also published as: JPH08198294A

Description

【０００１】
【産業上の利用分野】
本発明は、ＣＤ−ＲＯＭ再生装置、ＣＤプレイヤー、電子手帳等の電子機器等に用いられる蓋開閉装置、特に、一端がハウジングに装着されその装着部を支点として上下方向に開閉自在にハウジングと嵌合する蓋開閉装置に関するものである。
【０００２】
【従来の技術】
近年、ＣＤ−ＲＯＭ、ＣＤ等の記録媒体を出し入れしたり、携帯用のキーボード等を保護する蓋が種々の電子装置に用いられている。これらの電子機器は価格競争が厳しいので耐久性等の製品特性と同時に生産効率量産性等の製造特性の向上が要求されている。
【０００３】
以下に従来の蓋開閉装置について説明する。
図５は従来の蓋開閉装置の斜視図であり、図６（ａ）は蓋を閉じた場合の従来の蓋開閉装置の要部断面側面図であり、図６（ｂ）は蓋を開いた場合の従来の蓋開閉装置の要部断面側面図である。図５、図６（ａ）、及び、図６（ｂ）において、５０は従来の蓋開閉装置、５１はハウジングの底部を形成する直方体状の下ケース、５２はハウジングの上部の一端部を形成し下部が下ケース５１と一体に成形された上ケース、５３は上ケース５２の端部に開閉自在に装設された蓋部、Ａはハウジング上面に配設され装置を制御するボタン、５４は上ケース５２に固定され凹部を有する嵌合部、５５は嵌合部５４の凹部に上下自在に挿着した棒状の支持部、５６は支持部５５に外挿され支持部５５を上方に付勢するスプリング、５７は蓋部５３に固定され上ケース５２と回動自在に軸支される軸部、５８は支持部５５に当接され蓋部５３と一体に成形された凸部、５９は蓋部５３の下面に配設された基板、６０は基板５９の上面に装設された装置を制御するスイッチ、６１は蓋部５３から下方に直立して設けられスイッチ６０に当接されるボス、６２は蓋部５３の先端部に対向して設けられ下ケース５１に形成された挿入孔、６３は挿入孔６２に左右自在に挿着され先端部に向かって下降する傾斜した斜面を有する両端部に突起状部を有する棒状のロックレバー、６４はロックレバー６３に外挿されロックレバー６３の先端部方向に付勢するスプリング、６５はロックレバー６３の斜面に当接され押すことによりロックレバー６３を挿入孔６２の方向に移動させるオープンボタン、６６は蓋部５３のロックレバー６３に対向する先端部に設けられロックレバー６３の先端部が係止された係止部である。
【０００４】
以上のように構成された蓋開閉装置について、以下その動作を説明する。
蓋が閉じている場合は図６（ａ）に示すようにロックレバー６３の先端部がスプリング６４の付勢により係止部６６に挿入され蓋部５３が上ケース５２及び下ケース５１に係止されている。この時スイッチ６０はボス６１が当接されスイッチが押された状態にある。
【０００５】
次に、蓋を開ける場合は図６（ｂ）に示すようにオープンボタン６５を押すことによりロックレバー６３の斜面をオープンボタン６５の底面が摺動しつつ押し下げる。これにつれロックレバー６３が挿入孔６２側に押し出され先端部が係止部６６から外れる。この時、スプリング５６が支持部５６を上方に付勢しているので凸部５８が押し上げられ蓋部５３が開く。ボス６１は蓋部５３と一体になって開かれるので、スイッチ６０は切り換えられる。
【０００６】
【発明が解決しようとする課題】
しかしながら上記従来の蓋開閉装置では、スイッチに当接される細長の柱状のボスを蓋部に設けなければならないので蓋部を開いた時外観が悪く、また成形が困難であり生産性が劣るという問題点を有していた。ロックレバーと係止部が正確に対向して位置しない場合は蓋部に不必要な力がかかり端部がひずんで係止部と反対側の端部が浮くので外観上劣る。従って、各部品の加工精度や組み立て精度を上げなければならず生産性が劣り製造歩留りが低くなるという問題点を有していた。組み立て時に蓋部に力が加わる可能性が高いので蓋部の肉厚を大きくし剛性の高い材料が必要であり蓋部に使用する材料の量が多く用いなければならないという問題点を有していた。
【０００７】
本発明は上記従来の問題点を解決するもので、構造が簡単であり量産性が高く蓋部の浮きが少なく外観に優れた蓋開閉装置を提供することを目的とする。
【０００８】
【課題を解決するための手段】
この目的を達成するために本発明の請求項１に記載の蓋開閉装置は、ハウジングと、ハウジングに一端が開閉自在に装設された蓋部と、ハウジングに所定の間隔で配設され軸孔が穿孔された軸受部と、蓋部に固着され軸孔に回動自在に挿入された軸部と、軸部に軸支されカムの突起部が軸部の回転軸の位置から蓋部の内側に所定の間隔でオフセットされ蓋部を閉じた時突起部が下方に位置するカム部と、ハウジングに固定されオフセットされた位置から下方に挿入孔を有する支持部と、カム部に当接され挿入孔にスプリングを介して上下動自在に挿着された棒状の伝達部と、伝達部の下端に当接されたスイッチと、を有する蓋開閉装置であって、軸部が回転軸方向が同一の２つの回転軸に分離され、かつ、分離された軸部の一方の軸孔のクリアランスを所定の間隔で大きくする構成からなる。
【００１０】
ここで、伝達部に外挿されたスプリングは支持部の底面に固定されても良いし、スイッチまで延設されても良い。伝達部にはスプリングを係止する幅広の係止部が設けられている。カム部の突起部のオフセット量が大きくなると蓋部を開閉した場合の伝達部の移動量が小さくなり、突起部を大きくすると蓋部を開閉した場合の伝達部の移動量が大きくなる。
【００１１】
【作用】
この構成によって、蓋部を開くとカム部の突起部が横方向に回転するにつれスプリングの付勢力を与えられた伝達部が上方に移動することができる。この場合でもカム部と伝達部はスプリングの付勢力を加えられた状態で当接されているのでカム部は伝達部に支持され蓋部全体を開いたまま保持することができる。また、伝達部が持ち上げられることによりスイッチの状態を変更させることができる。蓋部を閉じるとカム部の突起部が下方に回転し伝達部を下方に押し下げスイッチの状態を変更することができる。
【００１２】
２つに分離した軸部の一方の軸孔のクリアランスを他方の軸部の軸孔のクリアランスより大きくしたので、クリアランスを大きくした軸部を伝達部が上方に押し上げこの軸部を有する側の蓋部が浮き上がる。その結果、カム部及び伝達部を支点として押し上げられた蓋部と反対側に位置する蓋部の先端部が押し下げられ蓋部の先端部がハウジングから浮き上がることがない。
【００１３】
【実施例】
以下一実施例について、図面を参照しながら説明する。
【００１４】
（実施例１）
図１は本発明の第１実施例における蓋開閉装置の斜視図であり、図２（ａ）は蓋部を閉じた場合の第１実施例における蓋開閉装置の断面側面図であり、図２（ｂ）は蓋部を開いた場合の第１実施例における蓋開閉装置の断面側面図である。図１、図２（ａ）、及び、図２（ｂ）において、１は第１実施例における蓋開閉装置、２は装置の外枠を形成する合成樹脂等からなるハウジング、３はハウジング２に一端を開閉自在に装設された合成樹脂等からなる蓋部、４は蓋部３の内面に装設されＣＤ等から情報を取り出すピックアップモジュール、５はピックアップモジュール４の中央部に軸部が装設されたＣＤ等を回転するターンテーブル、６はピックアップモジュール４内を径方向に移動しＣＤ等にレーザ光を発射し情報を含んだ反射光を受光するピックアップ、７はハウジング２の上面に配設され装置に動作の指示をするプレイボタン、８はハウジング２の上面に配設され装置の動作状況を表示する液晶ディスプレイ、９はハウジング２の前面に装設され装置に動作の指示をするボタン、１０ａ、１０ｂ、１０ｃ、１０ｄはハウジング２と一体に成形され軸孔１０ｅが穿孔され所定の間隔で４つ設けられた軸受部、１１ａ、１１ｂは軸孔１０ｅに回動自在に挿着され端部が蓋部３に固着された炭素鋼からなる軸部、１２は軸部１１ａ、１１ｂに軸支され蓋部３と一体に成形されカムの突起部１２ａが軸部１１ａ、１１ｂの回転軸から所定の間隔だけ蓋部３の内側にオフセットして設けられ蓋部３を閉じた時突起部１２ａが下方に位置するカム部、１３は突起部１２ａがオフセットされた位置の下方に凹部を有しこの凹部の底面に穿孔された挿入孔１３ａを有しハウジング２に固定された支持部、１４は挿入孔１３ａに挿着され上端部をカム部１２に当接されカム部１２の回転により上下動自在に移動する合成樹脂等からなる棒状の伝達部、１５は伝達部１４に外挿され伝達部１４を上方に付勢するスプリング、１６はハウジング２内の底面に配設された基板、１７は基板１６面上に装設され伝達部１４の下端に当接され伝達部１４の上下動によりＯＮあるいはＯＦＦされるスイッチ、である。
【００１５】
以上のように構成された蓋開閉装置について、以下図面を用いてその動作を説明する。蓋部３が閉じている場合は、図２（ａ）に示すようにカム部１２の突起部１２ａは下方に位置しておりスプリング１５で付勢された伝達部１４を下方に押し下げスイッチ１７を押している。蓋部３を開いた場合は、図２（ｂ）に示すようにカム部１２が蓋部３と一体になって回転し突起部１２ａが内側に移動する。突起部１２ａの押しつけから開放された伝達部１４はスプリング１５の付勢力により上方に移動する。カム部１２は蓋部３を開いた状態でも伝達部１４に当接された状態であり伝達部１４により支持されるので蓋部３全体も開いた状態で保持される。伝達部１４が上方に移動するとスイッチ１７は押し上げられ切り換えられる。
【００１６】
以上のように本実施例によれば、突起部を有する蓋部と一体に軸部に軸支されたカム部と、カム部に上端部が当接されスプリングにより付勢された伝達部と、伝達部の下端部に当接されたスイッチと、を設けたので、構造が簡便であるので製造歩留りが高く生産性に優れると同時に蓋開閉の信頼性が高く、かつ、外観に秀でる。
【００１７】
（実施例２）
図３は本発明の第２実施例における蓋開閉装置を用いた電子機器の斜視図であり、図４（ａ）は第１実施例における蓋開閉装置のＡ−Ａ′線断面側面図であり、図４（ｂ）は第２実施例における蓋開閉装置のＡ−Ａ′線断面側面図である。図３及び、図４（ｂ）において、第２実施例における蓋開閉装置は軸受部１０ｃ、１０ｄの軸孔１０ｅのクリアランスが軸受部１０ａ、１０ｂの軸孔１０ｅのクリアランスより大きく設定されている。第２実施例の他の構成は第１実施例と同様であり同一の符号を付けて説明を省略する。
【００１８】
以上のように構成された蓋開閉装置について、以下図面を用いてその動作を説明する。軸受部１０ｃ、１０ｄの軸孔１０ｅのクリアランスが大きいので、カム部１２を支点として軸受部１０ｃ、１０ｄを有する蓋部３がクリアランスの大きい分だけ浮き上がり他方の蓋部３の先端部がその分下方に沈むことになる。軸受部１０ｃ、１０ｄはハウジング２が掩覆しているので浮き上がった部分は外見上は目立たず、沈んだ先端部はハウジング２と密着させることがきる。図４（ａ）に示すように軸孔１０ｅのクリアランスが同じ場合はカム部１２が支点となり先端部は浮く傾向となり外観上好ましくない。
【００１９】
以上のように本実施例によれば、一方の軸受け部の軸孔のクリアランスを他方の軸孔のクリアランスより大きく設定したので、第１実施例に挙げた効果の他に蓋部の先端部が沈む傾向となりハウジングと密着して蓋部を閉じることができる。
【００２０】
【発明の効果】
以上のように本発明は、軸部に軸支されカムの突起部が軸部の回転軸の位置から蓋部の内側に所定の間隔でオフセットされ蓋部を閉じた時突起部が下方に位置するカム部と、カム部に先端部を当接されスプリングにより上方に付勢された伝達部と、伝達部の下端部に当接されたスイッチと、を設け、また、一方の軸受部の軸孔のクリアランスを他方の軸受部の軸孔のクリアランスより大きく設定したので、蓋部にボス等の突起物がなく外観に秀で、また、成形が容易なので製造歩留りが高く量産性に優れる。蓋部とハウジングとの間で軸部以外には嵌合部がないので、組み立て精度が要求されず生産性が高い。嵌合による蓋部へのひずみも発生しないので、蓋部の先端部が浮き上がることがなく外観に秀でる、また、蓋部の剛性を高めるために肉厚を厚くする必要もなく蓋部を薄肉にでき使用原料が少なくてすむ。一方の軸孔のクリアランスを大きくしたので、蓋部の先端部が沈む傾向となり蓋部とハウジングとの密着性が向上し成形時に歪みがあっても外観に秀でた優れた蓋開閉装置を実現することができる。
【図面の簡単な説明】
【図１】本発明の第１実施例における蓋開閉装置の斜視図
【図２】（ａ）蓋部を閉じた場合の第１実施例における蓋開閉装置の断面側面図
（ｂ）蓋部を開いた場合の第１実施例における蓋開閉装置の断面側面図
【図３】本発明の第２実施例における蓋開閉装置を用いた電子機器の斜視図
【図４】（ａ）第１実施例における蓋開閉装置のＡ−Ａ′線断面側面図
（ｂ）第２実施例における蓋開閉装置のＡ−Ａ′線断面側面図
【図５】従来の蓋開閉装置の斜視図
【図６】（ａ）蓋を閉じた場合の従来の蓋開閉装置の要部断面側面図
（ｂ）蓋を開いた場合の従来の蓋開閉装置の要部断面側面図
【符号の説明】
１第１実施例における蓋開閉装置
２ハウジング
３蓋部
４ピックアップモジュール
５ターンテーブル
６ピックアップ
７プレイボタン
８液晶ディスプレイ
９ボタン
１０ａ、１０ｂ、１０ｃ、１０ｄ軸受部
１０ｅ軸孔
１１ａ、１１ｂ軸部
１２カム部
１２ａ突起部
１３支持孔
１３ａ挿入孔
１４伝達部
１５スプリング
１６基板
１７スイッチ
５０従来の蓋開閉装置
５１下ケース
５２上ケース
５３蓋部
Ａボタン
５４嵌合部
５５支持部
５６スプリング
５７軸部
５８凸部
５９基板
６０スイッチ
６１ボス
６２挿入孔
６３ロックレバー
６４スプリング
６５オープンボタン
６６係止部[0001]
[Industrial applications]
The present invention relates to a lid opening / closing device used for an electronic device such as a CD-ROM reproducing device, a CD player, and an electronic organizer, and more particularly, one end is mounted on the housing, and the opening / closing portion is fitted to the housing so that the mounting portion can be opened and closed in the vertical direction. The present invention relates to a lid opening / closing device to be combined.
[0002]
[Prior art]
2. Description of the Related Art In recent years, lids for inserting and removing recording media such as CD-ROMs and CDs, and for protecting portable keyboards and the like have been used in various electronic devices. Since price competition of these electronic devices is severe, it is required to improve not only product characteristics such as durability but also manufacturing characteristics such as production efficiency and mass productivity.
[0003]
Hereinafter, a conventional lid opening and closing device will be described.
FIG. 5 is a perspective view of a conventional lid opening / closing device, FIG. 6 (a) is a sectional side view of a main part of the conventional lid opening / closing device when the lid is closed, and FIG. It is a principal part sectional side view of the conventional lid opening / closing device in the case. 5, 6 (a) and 6 (b), 50 is a conventional lid opening / closing device, 51 is a rectangular parallelepiped lower case forming the bottom of the housing, and 52 is forming one end of the upper portion of the housing. The lower case is formed integrally with the lower case 51, the upper case 53 is a lid part which is provided at the end of the upper case 52 so as to be openable and closable, the A is a button arranged on the upper surface of the housing to control the apparatus, and the numeral 54 is A fitting portion fixed to the upper case 52 and having a concave portion, 55 is a rod-shaped support portion inserted vertically into the concave portion of the fitting portion 54, and 56 is externally inserted into the support portion 55 to urge the support portion 55 upward. A spring 57 fixed to the lid 53 and rotatably supported by the upper case 52; a projection 58 abutting against the support 55 and integrally formed with the lid 53; The substrate disposed on the lower surface of the portion 53, and the substrate 60 is disposed on the upper surface of the substrate 59. A switch 61 for controlling the position, 61 is a boss provided upright from the lid 53 and abutted against the switch 60, and 62 is an insertion provided on the lower case 51 provided opposite the tip of the lid 53. The hole 63 is a rod-shaped lock lever having protrusions at both ends having an inclined slope which is inserted into the insertion hole 62 so as to be freely left and right and descends toward the distal end, and 64 is a lock lever externally inserted into the lock lever 63. A spring that urges the distal end portion of the lock 63, an open button 65 abuts against the slope of the lock lever 63 to move the lock lever 63 in the direction of the insertion hole 62 by pressing, and a 66 is a lock lever 63 of the lid 53. The locking portion is provided at an opposite end portion and the end portion of the lock lever 63 is locked.
[0004]
The operation of the lid opening / closing device configured as described above will be described below.
When the lid is closed, the distal end of the lock lever 63 is inserted into the locking portion 66 by the bias of the spring 64 and the lid 53 is locked to the upper case 52 and the lower case 51 as shown in FIG. Have been. At this time, the switch 60 is in a state where the boss 61 is abutted and the switch is pressed.
[0005]
Next, when the lid is opened, the slope of the lock lever 63 is pushed down by sliding the bottom surface of the open button 65 by pressing the open button 65 as shown in FIG. 6B. As a result, the lock lever 63 is pushed out toward the insertion hole 62, and the distal end portion comes off the locking portion 66. At this time, since the spring 56 urges the support portion 56 upward, the convex portion 58 is pushed up and the lid portion 53 is opened. Since the boss 61 is opened integrally with the lid 53, the switch 60 is switched.
[0006]
[Problems to be solved by the invention]
However, in the above-mentioned conventional lid opening / closing device, an elongated columnar boss to be brought into contact with the switch must be provided on the lid, so that the appearance is poor when the lid is opened, and molding is difficult and productivity is poor. Had problems. If the lock lever and the locking portion are not positioned exactly opposite each other, an unnecessary force is applied to the lid portion, the end portion is distorted, and the end portion opposite to the locking portion floats, resulting in poor appearance. Therefore, there has been a problem that the processing accuracy and the assembly accuracy of each part must be increased, and the productivity is inferior, and the production yield is low. Since there is a high possibility that force will be applied to the lid during assembly, there is a problem that the thickness of the lid must be increased and a material having high rigidity is required, and a large amount of material must be used for the lid. Was.
[0007]
SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a lid opening / closing device which has a simple structure, has high mass productivity, has little lifting of a lid portion, and has an excellent appearance.
[0008]
[Means for Solving the Problems]
In order to achieve this object, a lid opening and closing device according to claim 1 of the present invention comprises a housing, a lid having one end openably and closably mounted on the housing, and a shaft hole disposed at a predetermined interval in the housing. , A shaft portion fixed to the lid portion and rotatably inserted into the shaft hole, and a projection of the cam supported by the shaft portion and the cam protruding from the position of the rotation shaft of the shaft portion to the inside of the lid portion. A cam portion which is offset at a predetermined interval and the projection portion is located below when the lid portion is closed, a support portion which is fixed to the housing and has an insertion hole below the offset position, and which is brought into contact with the cam portion and inserted. a cover opening and closing device that Yusuke and transmitting portion of the vertically movably inserted is rod-shaped, a switch is in contact with the lower end of the transmitting portion, a via a spring into the hole, the shank is rotated axis The two rotating shafts are separated from each other, and the shaft hole of one of the separated shaft portions is cleared. It consists configured to increase the lance at predetermined intervals.
[0010]
Here, the spring extrapolated to the transmission unit may be fixed to the bottom surface of the support unit, or may extend to the switch. The transmission portion is provided with a wide locking portion for locking the spring. When the amount of offset of the protrusion of the cam part is large, the amount of movement of the transmission part when the lid is opened and closed is small, and when the amount of protrusion is large, the amount of movement of the transmission part when the lid is opened and closed is large.
[0011]
[Action]
With this configuration, when the lid is opened, the transmitting portion, to which the biasing force of the spring is applied, can move upward as the protrusion of the cam rotates in the lateral direction. Even in this case, since the cam portion and the transmission portion are in contact with each other with the biasing force of the spring applied thereto, the cam portion is supported by the transmission portion, and the entire lid can be held open. In addition, the state of the switch can be changed by lifting the transmission unit. When the lid is closed, the projection of the cam rotates downward, and the transmission is pushed downward to change the state of the switch.
[0012]
Since the clearance of one shaft hole of the two shaft portions is made larger than the clearance of the shaft hole of the other shaft portion, the transmission portion pushes the shaft portion having the increased clearance upward, and the lid on the side having this shaft portion. The part rises. As a result, the tip of the lid located on the side opposite to the lid pushed up with the cam and the transmission as the fulcrum is pressed down and the tip of the lid does not rise from the housing.
[0013]
【Example】
Hereinafter, an embodiment will be described with reference to the drawings.
[0014]
(Example 1)
FIG. 1 is a perspective view of the lid opening / closing device according to the first embodiment of the present invention, and FIG. 2A is a cross-sectional side view of the lid opening / closing device according to the first embodiment when the lid is closed. (B) is a sectional side view of the lid opening and closing device in the first embodiment when the lid is opened. 1, 2 (a) and 2 (b), reference numeral 1 denotes a lid opening / closing device in the first embodiment, 2 denotes a housing made of a synthetic resin or the like forming an outer frame of the device, and 3 denotes a housing 2. A lid 4 made of a synthetic resin or the like, one end of which is openable and closable, 4 is a pickup module mounted on the inner surface of the lid 3 for extracting information from a CD or the like, and 5 is a shaft mounted at the center of the pickup module 4. A turntable 6 for rotating a CD or the like provided therein, 6 is a pickup that moves in the pickup module 4 in the radial direction, emits laser light to the CD or the like, and receives reflected light containing information, and 7 is disposed on the upper surface of the housing 2. A play button provided on the upper surface of the housing 2 for indicating operation of the apparatus; 8 a liquid crystal display for displaying the operation state of the apparatus; 9 a front panel of the housing 2 for instructing the apparatus to operate. The buttons 10a, 10b, 10c, and 10d are formed integrally with the housing 2 and are provided with four bearing portions 11a and 11b provided at predetermined intervals with a shaft hole 10e formed therein. The shaft portions 10a and 11b are rotatably inserted into the shaft hole 10e. A shaft portion 12 made of carbon steel having an end fixed to the lid portion 3, a shaft 12 supported by the shaft portions 11 a and 11 b and integrally formed with the lid portion 3, and a cam projection 12 a serving as a rotation axis of the shaft portions 11 a and 11 b. The cam portion 13 is provided offset from the inside of the lid portion 3 by a predetermined distance, and the projection portion 12a is located below when the lid portion 3 is closed. The cam portion 13 has a concave portion below the position where the projection portion 12a is offset. A support portion 14 having an insertion hole 13a formed in the bottom surface of the concave portion and fixed to the housing 2 is inserted into the insertion hole 13a, and an upper end portion thereof is brought into contact with the cam portion 12, and is vertically moved by rotation of the cam portion 12. Is it a synthetic resin that can move freely? A bar-shaped transmitting portion 15 is a spring that is externally inserted into the transmitting portion 14 and urges the transmitting portion 14 upward, 16 is a substrate disposed on the bottom surface in the housing 2, and 17 is mounted on the surface of the substrate 16. A switch which is brought into contact with the lower end of the transmission unit 14 and is turned ON or OFF by the vertical movement of the transmission unit 14.
[0015]
The operation of the lid opening / closing device configured as described above will be described below with reference to the drawings. When the lid 3 is closed, as shown in FIG. 2A, the projection 12 a of the cam 12 is located below, and the transmission unit 14 urged by the spring 15 is pushed down to push the switch 17 down. Pressing. When the lid 3 is opened, as shown in FIG. 2B, the cam 12 rotates integrally with the lid 3 and the protrusion 12a moves inward. The transmission part 14 released from the pressing of the projection part 12a moves upward by the urging force of the spring 15. The cam portion 12 is in contact with the transmission portion 14 even when the lid portion 3 is opened and is supported by the transmission portion 14, so that the entire lid portion 3 is held in an open state. When the transmission unit 14 moves upward, the switch 17 is pushed up and switched.
[0016]
As described above, according to the present embodiment, the cam portion supported by the shaft portion integrally with the lid portion having the projection portion, the transmission portion biased by the spring with the upper end portion abutting on the cam portion, Since the switch abutting on the lower end of the transmission unit is provided, the structure is simple, so that the production yield is high and the productivity is excellent, the reliability of opening and closing the lid is high, and the appearance is excellent.
[0017]
(Example 2)
FIG. 3 is a perspective view of an electronic apparatus using the lid opening / closing device according to the second embodiment of the present invention, and FIG. 4A is a cross-sectional side view of the lid opening / closing device taken along line AA ′ in the first embodiment. FIG. 4B is a cross-sectional side view taken along line AA ′ of the lid opening / closing device according to the second embodiment. 3 and 4B, in the lid opening / closing device in the second embodiment, the clearance of the shaft holes 10e of the bearing portions 10c and 10d is set to be larger than the clearance of the shaft holes 10e of the bearing portions 10a and 10b. Other configurations of the second embodiment are the same as those of the first embodiment, and the same reference numerals are given and the description is omitted.
[0018]
The operation of the lid opening / closing device configured as described above will be described below with reference to the drawings. Since the clearance of the shaft holes 10e of the bearing portions 10c and 10d is large, the lid portion 3 having the bearing portions 10c and 10d is lifted up by the large clearance with the cam portion 12 as a fulcrum, and the tip end of the other lid portion 3 is lowered accordingly. Will sink. Since the housings 2 cover the bearings 10c and 10d, the raised portions are inconspicuous in appearance, and the sunk tips can be brought into close contact with the housing 2. As shown in FIG. 4A, when the clearance of the shaft hole 10e is the same, the cam portion 12 becomes a fulcrum and the tip portion tends to float, which is not preferable in appearance.
[0019]
As described above, according to the present embodiment, the clearance of the shaft hole of one bearing portion is set to be larger than the clearance of the other shaft hole. It tends to sink and the lid can be closed in close contact with the housing.
[0020]
【The invention's effect】
As described above, according to the present invention, the protrusion of the cam is supported by the shaft, the protrusion of the cam is offset from the position of the rotation shaft of the shaft at a predetermined interval inside the cover, and the protrusion is positioned downward when the cover is closed. A transmission portion, the tip of which is in contact with the cam portion, and which is urged upward by a spring; and a switch which is in contact with the lower end of the transmission portion. Since the clearance of the hole is set to be larger than the clearance of the shaft hole of the other bearing portion, there is no protrusion such as a boss on the lid portion, and the appearance is excellent. Also, since the molding is easy, the production yield is high and the mass productivity is excellent. Since there is no fitting portion other than the shaft portion between the lid portion and the housing, assembly accuracy is not required and productivity is high. The lid does not distort due to the fitting, so the tip of the lid does not rise and the appearance is excellent, and the lid does not need to be thickened to increase the rigidity of the lid, making the lid thin It requires less raw materials. Because the clearance of one shaft hole is increased, the tip of the lid tends to sink, improving the adhesion between the lid and the housing, and realizing an excellent lid opening and closing device with excellent appearance even if there is distortion during molding can do.
[Brief description of the drawings]
FIG. 1 is a perspective view of a lid opening / closing device according to a first embodiment of the present invention; FIG. 2 (a) is a sectional side view of the lid opening / closing device according to the first embodiment when the lid is closed; FIG. 3 is a sectional side view of the lid opening / closing device in the first embodiment when opened. FIG. 3 is a perspective view of an electronic apparatus using the lid opening / closing device in the second embodiment of the present invention. (B) AA 'line section side view of the lid opening / closing device in (b) AA' line section side view of the lid opening / closing device in the second embodiment [FIG. 5] A perspective view of a conventional lid opening / closing device [FIG. a) Cross-sectional side view of main part of conventional lid opening and closing device when lid is closed (b) Cross-sectional side view of main part of conventional lid opening and closing device when lid is opened
DESCRIPTION OF SYMBOLS 1 Cover opening / closing apparatus 2 in the first embodiment 2 Housing 3 Cover 4 Pickup module 5 Turntable 6 Pickup 7 Play button 8 Liquid crystal display 9 Buttons 10a, 10b, 10c, 10d Bearing 10e Shaft holes 11a, 11b Shaft 12 Cam 12a Projection 13 Support hole 13a Insertion hole 14 Transmission part 15 Spring 16 Board 17 Switch 50 Conventional lid opening and closing device 51 Lower case 52 Upper case 53 Lid A button 54 Fitting part 55 Support part 56 Spring 57 Shaft part 58 Convex part 59 board 60 switch 61 boss 62 insertion hole 63 lock lever 64 spring 65 open button 66 locking part

Claims

ハウジングと、前記ハウジングに一端が開閉自在に装設された蓋部と、前記ハウジングに所定の間隔で配設され軸孔が穿孔された軸受部と、前記蓋部に固着され前記軸孔に回動自在に挿入された軸部と、前記軸部に軸支されカムの突起部が前記軸部の回転軸の位置から前記蓋部の内側に所定の間隔でオフセットされ前記蓋部を閉じた時前記突起部が下方に位置するカム部と、前記ハウジングに固定されオフセットされた位置から下方に挿入孔を有する支持部と、前記カム部に当接され前記挿入孔にスプリングを介して上下動自在に挿着された棒状の伝達部と、前記伝達部の下端に当接されたスイッチと、を有する蓋開閉装置であって、前記軸部が回転軸方向が同一の２つの回転軸に分離され、かつ、分離された前記軸部の一方の前記軸孔のクリアランスを所定の間隔で大きくすることを特徴とする蓋開閉装置。A housing, a lid having one end mounted on the housing so as to be openable and closable, a bearing disposed at a predetermined interval in the housing and having a shaft hole formed therein, and a shaft fixed to the lid and turned around the shaft hole. When the shaft portion movably inserted and the projection of the cam that is pivotally supported by the shaft portion are offset at a predetermined interval from the position of the rotation axis of the shaft portion to the inside of the lid portion and the lid portion is closed. A cam having the protrusion positioned below, a support having an insertion hole below the offset position fixed to the housing, and being vertically contactable with the cam and vertically movable via a spring in the insertion hole; to the transmitting portion of the inserted are rod-like, a cover opening and closing device that having a, a switch is in contact with the lower end of the transmission portion, the shank has two rotation axis direction by the same rotation shaft The shaft hole of one of the separated shaft portions is separated and clogged. Cover opening and closing device, characterized in that to increase the Aransu at predetermined intervals.