JP6510386B2 - Automotive electronics - Google Patents
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- JP6510386B2 JP6510386B2 JP2015223306A JP2015223306A JP6510386B2 JP 6510386 B2 JP6510386 B2 JP 6510386B2 JP 2015223306 A JP2015223306 A JP 2015223306A JP 2015223306 A JP2015223306 A JP 2015223306A JP 6510386 B2 JP6510386 B2 JP 6510386B2
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Description
本発明は、表示パネル等を有する機器本体がガイドシャフトに沿って昇降動作する車載用電子機器に関するものである。 The present invention relates to an on-vehicle electronic device in which an apparatus main body having a display panel or the like moves up and down along a guide shaft.
自動車の車室内に装備される車載用電子機器として、表示パネルが搭載された機器本体を一対のガイドシャフトに沿って往復動可能とし、この機器本体がダッシュボードやインストルメントパネルの内部に収納された収納姿勢から外部に露出する突出姿勢へ向かって移動するものがある。 As an on-vehicle electronic device installed in a vehicle compartment of an automobile, a device body equipped with a display panel can be reciprocated along a pair of guide shafts, and the device body is housed inside a dashboard or an instrument panel There is one that moves from the storage position to the protruding position exposed to the outside.
このような車載用電子機器において、機器本体をガタ付きなくスムーズに上下動させるために、機器本体の左右両側に設けられた軸受け部のうち、片側の軸受け部の内部に２つのメタル含油軸受を固定し、これらメタル含油軸受に一方のガイドシャフトを摺動自在に挿通させると共に、反対側の軸受け部に軸受け孔を開設し、この軸受孔を他方のガイドシャフトに挿通させたものが知られている（例えば、特許文献１参照）。 In such an on-vehicle electronic device, two metal oil-impregnated bearings are provided inside one of the bearing portions provided on the left and right sides of the device body in order to move the device body up and down smoothly without rattling. It is known that one guide shaft is slidably inserted into these metal oil-impregnated bearings, and a bearing hole is made in the opposite bearing portion, and this bearing hole is inserted into the other guide shaft. (See, for example, Patent Document 1).
特許文献１に開示された車載用電子機器では、モータを駆動源とする駆動機構を作動させると、機器本体は片側２つのメタル含油軸受とガイドシャフトとの摺動部分を基準として上下動し、反対側の軸受け孔がガイドシャフトを最少の隙間で摺動するため、機器本体をガイドシャフトに沿ってスムーズに昇降動作させることができる。 In the on-vehicle electronic device disclosed in Patent Document 1, when the drive mechanism using the motor as a drive source is operated, the device body vertically moves on the basis of the sliding portion between the two metal oil-impregnated bearings on one side and the guide shaft, Since the opposite bearing hole slides the guide shaft with a minimum clearance, the device body can be moved up and down smoothly along the guide shaft.
しかしながら、ガイドシャフトに沿って機器本体が上下動する車載用電子機器においては、軸受とガイドシャフトとの間に若干のクリアランスを必要とするため、機器本体が上昇位置で突出姿勢に保持されているときに走行中の自動車から外部振動等が作用すると、機器本体が上記クリアランスに起因してガイドシャフトのラジアル方向（軸線と直交する方向）へ振動し、ラットルノイズと呼ばれる異音を生じる虞があった。特に、機器本体に質量の大きい表示パネルが搭載されている場合、ガイドシャフトの上方位置に重量物を保持した状態で自動車が走行することになるため、軸受とガイドシャフト間の僅かなクリアランスによってラットルノイズが発生しやすくなる。 However, in the case of an on-vehicle electronic device in which the device body vertically moves along the guide shaft, the device body is held in the projecting posture at the raised position because a slight clearance is required between the bearing and the guide shaft. When an external vibration or the like is applied from a traveling automobile, the device body vibrates in the radial direction (direction orthogonal to the axis) of the guide shaft due to the clearance, which may cause abnormal noise called rattle noise. The In particular, when a display panel with a large mass is mounted on the device main body, the vehicle travels with a heavy object held at the upper position of the guide shaft, so a slight clearance between the bearing and the guide shaft Noise is likely to occur.
なお、ガイドシャフトの上端付近に形成したストッパ部にゴム製の緩衝部材を取り付け、ガイドシャフトに沿って上昇する軸受け部をこの緩衝部材の下面に押し当てて停止させることにより、突出姿勢にある機器本体を弾性的に保持するという手段が考えられる。しかし、このような緩衝部材には停止時の衝突音を吸収する機能も必要であり、比較的柔らかいゴム材料を使用しなければならないため、機器本体の振動に追従して緩衝部材がガイドシャフトのラジアル方向へ変形しやすくなり、ラットルノイズの発生を確実に防止することは困難である。 A rubber shock absorber is attached to the stopper formed near the upper end of the guide shaft, and the bearing in the raised posture is stopped by pressing the bearing rising along the guide shaft against the bottom of the shock absorber. A means of resiliently holding the body is conceivable. However, such a shock absorbing member is also required to have a function to absorb collision noise at the time of stopping, and a relatively soft rubber material has to be used. It becomes easy to deform in the radial direction, and it is difficult to prevent rattle noise reliably.
本発明は、このような従来技術の実情に鑑みてなされたもので、その目的は、上昇位置にある機器本体を安定的に保持してラットルノイズの発生を抑制することができる車載用電子機器を提供することにある。 The present invention has been made in view of the circumstances of the prior art as described above, and its object is to provide an on-vehicle electronic device capable of stably holding the device main body at the elevated position to suppress the generation of rattle noise. To provide.
上記の目的を達成するために、本発明の車載用電子機器は、シャーシと、前記シャーシに支持されて上下方向へ延びるガイドシャフトと、前記ガイドシャフトに摺動自在に挿通された筒状軸受部を有する機器本体と、前記機器本体を前記ガイドシャフトに沿って昇降動作させる駆動機構とを備えた車載用電子機器において、前記シャーシに設けられたストッパ部に前記ガイドシャフトの上端部を包囲するように環状の弾性部材が取り付けられており、前記弾性部材は前記ガイドシャフトを包囲して下方へ突出する環状受部を有し、前記環状受部と前記筒状軸受部との少なくとも一方に、前記駆動機構から前記筒状軸受部に付与される上向きの駆動力を前記環状受部が前記ガイドシャフトの外周面に圧接される方向の付勢力に変換する環状傾斜面が形成されている構成とした。 In order to achieve the above object, an on-vehicle electronic device according to the present invention includes a chassis, a guide shaft supported by the chassis and extending in the vertical direction, and a cylindrical bearing portion slidably inserted in the guide shaft. And a drive mechanism for moving the device body up and down along the guide shaft, wherein the upper end portion of the guide shaft is surrounded by the stopper portion provided on the chassis. An annular elastic member is attached to the ring, and the elastic member has an annular receiving portion that protrudes downward surrounding the guide shaft, and at least one of the annular receiving portion and the cylindrical bearing portion An annular inclination for converting an upward driving force applied from the driving mechanism to the cylindrical bearing portion to a biasing force in a direction in which the annular receiving portion is in pressure contact with the outer peripheral surface of the guide shaft There was a structure is formed.
このように構成された車載用電子機器では、機器本体の上昇に伴って筒状軸受部がガイドシャフトの上端部に設けられた弾性部材の環状受部に圧接されると、駆動機構から筒状軸受部に付与される上向きの駆動力が環状傾斜部でガイドシャフトの中心方向への分力に変換され、その反力が筒状軸受部に対してラジアル方向の荷重として加わる。その結果、弾性部材が筒状軸受部とガイドシャフトの間に挟まれた状態となるため、弾性部材は柔らかい材料であるのにも関わらず機器本体の振動に追従して変形することが抑えられる。これにより、筒状軸受部の軸ガタが弾性部材によって吸収されるため、上昇位置に保持された機器本体に外部振動が作用したとしても、ラットルノイズの発生を効果的に抑制することができる。 In the vehicle-mounted electronic device configured as described above, when the cylindrical bearing portion is brought into pressure contact with the annular receiving portion of the elastic member provided at the upper end portion of the guide shaft as the device body rises, The upward driving force applied to the bearing portion is converted into a component force toward the center of the guide shaft at the annular inclined portion, and the reaction force is applied as a load in the radial direction to the cylindrical bearing portion. As a result, since the elastic member is sandwiched between the cylindrical bearing portion and the guide shaft, it is possible to suppress deformation following the vibration of the device body despite the soft member being a soft material. . Thereby, since the backlash of the cylindrical bearing portion is absorbed by the elastic member, the generation of rattle noise can be effectively suppressed even if the external vibration acts on the device main body held at the raised position.
上記の構成において、環状傾斜面は環状受部と筒状軸受部のいずれか一方のみに形成されていても良いが、弾性部材の環状受部に下方に向かって径寸法を小さくする凸状傾斜面が形成されていると共に、機器本体の筒状軸受部に凸状傾斜面と当接可能であって下方に向かって径寸法を小さくする凹状傾斜面が形成されていると、筒状軸受部に付与される上向きの駆動力を両方の環状傾斜面（凹状傾斜面と凸状傾斜面）の接触面を介して環状受部に効率良く伝達することができる。 In the above configuration, the annular inclined surface may be formed only on either one of the annular receiving portion and the cylindrical bearing portion, but a convex inclination for decreasing the diameter toward the lower side of the annular receiving portion of the elastic member When the surface is formed and a concave inclined surface capable of coming into contact with the convex inclined surface and decreasing in diameter downward is formed on the cylindrical bearing of the device body, the cylindrical bearing is formed. The upward driving force applied to can be efficiently transmitted to the annular receiving portion through the contact surface of both annular inclined surfaces (concave inclined surface and convex inclined surface).
また、上記の構成において、駆動機構は、筒状軸受部が環状受部に当接した後も機器本体に対して上向きの駆動力を継続的に付与するものであると、弾性部材は筒状軸受部とガイドシャフトの間に挟まれた状態となり、弾性部材は柔らかい材料であるのにも関わらず硬い材料と同じような特性となるため、機器本体を上昇位置により安定的に保持することができて好ましい。 Further, in the above configuration, the elastic member has a cylindrical shape in which the drive mechanism continuously applies an upward driving force to the device body even after the cylindrical bearing portion abuts on the annular receiving portion. Since the elastic member is sandwiched between the bearing portion and the guide shaft, and the elastic member has the same characteristics as the hard material despite being a soft material, the device body can be stably held in the raised position. Possible and preferred.
また、上記の構成において、ガイドシャフトの両端部をネジ止めやカシメ等の手段を用いてシャーシに固定するようにしても良いが、少なくともガイドシャフトの上端部がブッシュを介してシャーシに取り付けられていると、ガイドシャフトを安価なブッシュを用いて簡単に取り付けることができると共に、ガイドシャフトとブッシュとの間のクリアランスに起因するラットルノイズの発生を抑制することができる。 In the above configuration, both end portions of the guide shaft may be fixed to the chassis by means of screws or caulking, but at least the upper end portion of the guide shaft is attached to the chassis through the bush. Accordingly, the guide shaft can be easily attached using an inexpensive bush, and the generation of rattle noise due to the clearance between the guide shaft and the bush can be suppressed.
また、上記の構成において、機器本体はシャーシに対して出入可能な表示パネルを備えており、筒状軸受部が環状受部に圧接されているとき、表示パネルはシャーシから突出した姿勢に保持されるようになっていると、質量の大きな表示パネルを突出姿勢にガタ付きなく安定的に保持することができる。 Further, in the above configuration, the device body includes the display panel capable of entering and exiting the chassis, and when the cylindrical bearing portion is in pressure contact with the annular receiving portion, the display panel is held in a posture projecting from the chassis The display panel with a large mass can be stably held in the protruding position without rattling.
本発明の車載用電子機器によれば、上昇位置にある機器本体を安定的に保持してラットルノイズの発生を抑制することができる。 According to the on-vehicle electronic device of the present invention, it is possible to stably hold the device body at the raised position to suppress the generation of rattle noise.
発明の実施の形態について図面を参照して説明すると、本発明の実施形態例に係る車載用電子機器は、ダッシュボード（図示せず）等の内部に設置されるシャーシ１と、シャーシ１の左右両側に支持されて上下方向へ延びる一対のガイドシャフト２，３と、図示せぬ表示パネルが搭載された機器本体４と、機器本体４をガイドシャフト２，３に沿って上下方向に往復移動させる駆動機構５等を備えている。 An embodiment of the invention will be described with reference to the drawings. The on-vehicle electronic device according to the embodiment of the invention includes a chassis 1 installed inside a dashboard (not shown) or the like, and left and right of the chassis 1 A pair of guide shafts 2 and 3 supported on both sides and extending in the vertical direction, the device body 4 on which a display panel (not shown) is mounted, and the device body 4 are reciprocated in the vertical direction along the guide shafts 2 and 3 The drive mechanism 5 and the like are provided.
シャーシ１は上面に細長形状の開口部１ａを有しており、図３に示すように、非使用時に機器本体４はシャーシ１の内部に格納された収納姿勢にあるが、図１，２に示すように、使用時に機器本体４は開口部１ａを通って車室内に露出する突出姿勢となる。 The chassis 1 has an elongated opening 1a on the upper surface, and as shown in FIG. 3, the device body 4 is in the storage posture stored inside the chassis 1 when not in use. As shown, in use, the device body 4 is in a projecting posture in which it is exposed to the vehicle interior through the opening 1a.
一対のガイドシャフト２，３は断面円形の金属棒であり、これらガイドシャフト２，３の下端部はＤカット形状に加工されており、当該部分をネジ止めすることによってガイドシャフト２，３の下端部はシャーシ１の底面部に固定されている。また、図５，６に示すように、ガイドシャフト２，３の上端部は合成樹脂製のブッシュ６を介してシャーシ１の天面部に取り付けられており、このようなブッシュ６を用いた取付構造を採用することにより、ガイドシャフト２，３の上端部を安価に且つ簡単な作業でシャーシ１に取り付けることができる。ただし、ガイドシャフト２，３の下端部と同じように、ガイドシャフト２，３の上端部をネジ止めによってシャーシ１に固定するようにしても良い。 The pair of guide shafts 2 and 3 are metal rods having a circular cross section, and the lower ends of the guide shafts 2 and 3 are processed into a D-cut shape, and the lower ends of the guide shafts 2 and 3 are screwed by screwing the portions. The unit is fixed to the bottom of the chassis 1. Further, as shown in FIGS. 5 and 6, the upper end portions of the guide shafts 2 and 3 are attached to the top surface portion of the chassis 1 via the synthetic resin bush 6, and the attachment structure using such a bush 6 The upper end portions of the guide shafts 2 and 3 can be attached to the chassis 1 inexpensively and with simple operations. However, like the lower ends of the guide shafts 2 and 3, the upper ends of the guide shafts 2 and 3 may be fixed to the chassis 1 by screwing.
機器本体４の外殻はアルミダイカストや高強度樹脂等の軽量で剛性が高い材料からなり、この機器本体４の下部両側には垂下片７，８が設けられている。一方の垂下片７には上側筒状軸受部７ａと下側筒状軸受部７ｂが上下方向に所定間隔をおいて突設されており、一方のガイドシャフト２は各筒状軸受部７ａ，７ｂに穿設された貫通孔を挿通して上下方向へ延びている。これら貫通孔の内径はガイドシャフト２の直径に比べて大きめに設定されており、図５，６に示すように、上側筒状軸受部７ａの貫通孔７ｃにはステンレス等からなる筒状の軸受９が圧入・固定されている。この軸受９は一方のガイドシャフト２に摺動自在に嵌合されているが、良好な摺動性を維持するために両者２，９の間には若干のクリアランスが確保されている。 The outer shell of the device body 4 is made of a lightweight and highly rigid material such as aluminum die-casting or high-strength resin, and the drooping pieces 7 and 8 are provided on the lower sides of the device body 4. An upper cylindrical bearing portion 7a and a lower cylindrical bearing portion 7b are provided on the one hanging piece 7 so as to protrude in the vertical direction at a predetermined distance, and one guide shaft 2 is provided for each of the cylindrical bearing portions 7a and 7b. It penetrates the through-hole drilled in and extends in the vertical direction. The inner diameters of these through holes are set larger than the diameter of the guide shaft 2, and as shown in FIGS. 5 and 6, cylindrical bearings made of stainless steel or the like are provided in the through holes 7c of the upper cylindrical bearing portion 7a. 9 is press fit and fixed. The bearing 9 is slidably fitted on one of the guide shafts 2, but a slight clearance is secured between the two 2 and 9 in order to maintain good slidability.
他方の垂下片８にも上側筒状軸受部８ａと下側筒状軸受部８ｂが上下方向に所定間隔をおいて突設されており、他方のガイドシャフト３は各筒状軸受部８ａ，８ｂに穿設された貫通孔を挿通して上下方向へ延びている。図示省略されているが、これら筒状軸受部８ａ，８ｂは前述した一方の垂下片７の各筒状軸受部７ａ，７ｂと同様な構成となっている。すなわち、上側筒状軸受部８ａの貫通孔にはステンレス等からなる筒状の軸受が圧入・固定されており、この軸受は他方のガイドシャフト３に摺動自在に嵌合されているが、両者の間には若干のクリアランスが確保されている。 An upper cylindrical bearing portion 8a and a lower cylindrical bearing portion 8b are also provided on the other hanging piece 8 at predetermined intervals in the vertical direction, and the other guide shaft 3 is provided with the respective cylindrical bearing portions 8a and 8b. It penetrates the through-hole drilled in and extends in the vertical direction. Although not shown, these cylindrical bearings 8a and 8b have the same configuration as the cylindrical bearings 7a and 7b of the one hanging piece 7 described above. That is, a cylindrical bearing made of stainless steel or the like is press-fitted and fixed in the through hole of the upper cylindrical bearing portion 8a, and this bearing is slidably fitted on the other guide shaft 3, but both There is some clearance between the
図１〜図３に示すように、駆動機構５は、Ｘ状に交差する一対のリンクレバー１０，１１と、これら両リンクレバー１０，１１を駆動する図示せぬモータ等によって構成されており、このモータを駆動源として両リンクレバー１０，１１の交差角度が変化すると、機器本体４がガイドシャフト２，３に沿って上下方向に往復移動するようになっている。 As shown in FIGS. 1 to 3, the drive mechanism 5 is configured by a pair of link levers 10 and 11 intersecting in an X shape, and a motor (not shown) for driving both link levers 10 and 11, When the crossing angle of the link levers 10 and 11 changes with the motor as a drive source, the device body 4 reciprocates in the vertical direction along the guide shafts 2 and 3.
図４〜図６に示すように、図示左側のシャーシ１の天面近傍にはストッパ部１ｂが設けられており、このストッパ部１ｂにゴム材料からなる環状の弾性部材１２が取り付けられている。図７に示すように、弾性部材１２は、ガイドシャフト２に挿通される挿通孔１２ａと、挿通孔１２ａの下端側を包囲する円錐形状の環状受部１２ｂと、ストッパ部１ｂに嵌め込まれる取付溝１２ｃとを有しており、環状受部１２ｂは下方に向かって径寸法を小さくする凸状傾斜面となっている。詳細な構成は図示省略されているが、他方のガイドシャフト３の上端部にも同様の弾性部材１３が配設されており、この弾性部材１３は図示右側のシャーシ１の天面近傍に設けられたストッパ部に取り付けられている。 As shown in FIGS. 4 to 6, a stopper portion 1b is provided in the vicinity of the top surface of the chassis 1 on the left side in the figure, and an annular elastic member 12 made of a rubber material is attached to the stopper portion 1b. As shown in FIG. 7, the elastic member 12 has an insertion hole 12a inserted into the guide shaft 2, a conical annular receiving portion 12b surrounding the lower end side of the insertion hole 12a, and an attachment groove fitted in the stopper portion 1b. 12c, and the annular receiving portion 12b is in the form of a convex inclined surface which decreases in diameter toward the lower side. Although the detailed configuration is not shown, the same elastic member 13 is disposed at the upper end portion of the other guide shaft 3, and this elastic member 13 is provided in the vicinity of the top surface of the chassis 1 on the right side in the drawing. It is attached to the stopper part.
次に、本実施形態例に係る車載用電子機器の動作について簡単に説明すると、図３に示すように、機器本体４がシャーシ１の内部に格納された収納姿勢にあるとき、左右の垂下片７，８はそれぞれガイドシャフト２，３の下端側に位置しており、図示せぬが、駆動機構５の両リンクレバー１０，１１は交差角度を最大にした姿勢で停止している。 Next, the operation of the on-vehicle electronic device according to this embodiment will be briefly described. As shown in FIG. 3, when the device body 4 is in the storage posture stored inside the chassis 1, the left and right hanging pieces 7 and 8 are respectively located on the lower end side of the guide shafts 2 and 3. Although not shown, both link levers 10 and 11 of the drive mechanism 5 are stopped in a posture in which the crossing angle is maximized.
この状態で図示せぬモータを一方向に回転すると、両リンクレバー１０，１１が互いの交差角度を狭めるように回動し、それに伴って図示左側の垂下片７に設けられた上側筒状軸受部７ａと下側筒状軸受部７ｂが一方のガイドシャフト２に沿って上方へ移動すると共に、図示右側の垂下片８に設けられた上側筒状軸受部８ａと下側筒状軸受部８ｂが他方のガイドシャフト３に沿って上方へ移動する。そして、左右の上側筒状軸受部７ａ，８ａがガイドシャフト２，３の上端側まで移動すると、これら上側筒状軸受部７ａ，８ａが駆動機構５からの上向きの駆動力を受けて弾性部材１２，１３に圧接され、この時点でモータを停止することにより、図１，２に示すように、機器本体４は開口部１ａを通ってシャーシ１の上方へ突出する突出姿勢に保持される。 In this state, when the motor (not shown) is rotated in one direction, the link levers 10 and 11 rotate so as to narrow the crossing angle with each other, and the upper cylindrical bearing provided on the hanging piece 7 on the left side accordingly. While the portion 7a and the lower cylindrical bearing 7b move upward along one guide shaft 2, the upper cylindrical bearing 8a and the lower cylindrical bearing 8b provided on the hanging piece 8 on the right side of the figure It moves upward along the other guide shaft 3. Then, when the left and right upper cylindrical bearings 7a and 8a move to the upper end side of the guide shafts 2 and 3, the upper cylindrical bearings 7a and 8a receive an upward driving force from the drive mechanism 5, and the elastic member 12 is moved. , 13 and by stopping the motor at this time, the device main body 4 is held in a projecting posture projecting upward of the chassis 1 through the opening 1a as shown in FIGS.
このとき、図５に示すように、上側筒状軸受部７ａの貫通孔７ｃの上端開口縁が弾性部材１２の凸状傾斜面（環状受部）１２ｂに突き当たってＦｖという力を発生させ、この力Ｆｖが凸状傾斜面１２ｂの傾斜角に応じてＦｈという分力に変換されるため、その反力が上側筒状軸受部７ａに対してラジアル方向の荷重として加わる。その結果、弾性部材１２は上側筒状軸受部７ａとガイドシャフト２の間に挟まれた状態となり、弾性部材１２は柔らかい材料であるのにも関わらず機器本体４の振動に追従して変形することが抑えられるため、軸受９とガイドシャフト２間のクリアランスに基づく軸ガタが吸収される。図示省略されているが、下側筒状軸受部８ｂの貫通孔の上端開口縁が弾性部材１３の凸状傾斜面に突き当たることにより、他方のガイドシャフト３の上端部においても同様に軸ガタが吸収される。したがって、突出姿勢に保持された機器本体４に外部振動が作用したとしても、上側筒状軸受部７ａ，８ａとガイドシャフト２，３との間でラットルノイズが発生することを防止できる。 At this time, as shown in FIG. 5, the upper end opening edge of the through hole 7c of the upper cylindrical bearing portion 7a abuts against the convex inclined surface (annular receiving portion) 12b of the elastic member 12 to generate a force of Fv. Since the force Fv is converted into a component force Fh according to the inclination angle of the convex inclined surface 12b, the reaction force is applied to the upper cylindrical bearing portion 7a as a load in the radial direction. As a result, the elastic member 12 is sandwiched between the upper cylindrical bearing portion 7a and the guide shaft 2, and the elastic member 12 deforms following the vibration of the device body 4 despite being a soft material. As a result, the backlash due to the clearance between the bearing 9 and the guide shaft 2 is absorbed. Although not shown, when the upper end opening edge of the through hole of the lower cylindrical bearing portion 8b abuts against the convex inclined surface of the elastic member 13, the shaft rattle is similarly generated at the upper end portion of the other guide shaft 3 as well. Absorbed Therefore, even if external vibration acts on the device main body 4 held in the projecting posture, rattle noise can be prevented from being generated between the upper cylindrical bearing portions 7a and 8a and the guide shafts 2 and 3.
ここで、駆動機構５の駆動源であるモータは、弾性部材１２の凸状傾斜面１２ｂが確実に変形したタイミングで停止するように制御されている。すなわち、上側筒状軸受部７ａの貫通孔７ｃの上端開口縁が弾性部材１２の凸状傾斜面１２ｂに当接した後も、モータを直ちに停止させずに所定量だけ回転を続行することにより、上側筒状軸受部７ａが弾性部材１２の凸状傾斜面１２ｂに確実に圧接されるようになっており、上側筒状軸受部８ａと弾性部材１３についても同様である。これにより、上記したＦｖという力を確実に発生させることができるため、機器本体４が突出姿勢に安定的に保持されてラットルノイズの発生を効果的に抑制することができる。 Here, the motor which is the drive source of the drive mechanism 5 is controlled to stop at the timing when the convex inclined surface 12b of the elastic member 12 is reliably deformed. That is, even after the upper end opening edge of the through hole 7c of the upper cylindrical bearing portion 7a abuts on the convex inclined surface 12b of the elastic member 12, the motor is not stopped immediately but rotation is continued by a predetermined amount. The upper cylindrical bearing portion 7a is securely pressed against the convex inclined surface 12b of the elastic member 12, and the same applies to the upper cylindrical bearing portion 8a and the elastic member 13. As a result, the force Fv can be reliably generated, so that the device body 4 can be stably held in the projecting posture, and the generation of rattle noise can be effectively suppressed.
なお、本実施形態例では、シャーシ１に対してガイドシャフト２，３を安価な構造で簡単に取り付け可能とするために、ガイドシャフト２，３の上端部が合成樹脂製のブッシュ６を介してシャーシ１の天面部に取り付けられているが、ブッシュ６の経年的な摩耗や寸法誤差等により、ガイドシャフト２，３とブッシュ６との間に僅かなクリアランスを生じることがある。そのような場合においても、上側筒状軸受部７ａ，８ａが弾性部材１２，１３に圧接された時点で、図５に示すＦｈという分力が弾性部材１２の凸状傾斜面１２ｂを押し潰し、その圧力が挿通孔１２ａの中心に向かってガイドシャフト２の全周に作用することにより、弾性部材１２の内径寸法が縮小してガイドシャフト２に密着嵌合した状態になるため、ガイドシャフト２，３とブッシュ６との間のクリアランスに起因するラットルノイズの発生を抑制することができる。 In the present embodiment, the upper end portions of the guide shafts 2 and 3 are made via the synthetic resin bush 6 so that the guide shafts 2 and 3 can be easily attached to the chassis 1 with an inexpensive structure. Although attached to the top surface portion of the chassis 1, a slight clearance may be generated between the guide shafts 2 and 3 and the bush 6 due to age-related wear of the bush 6, dimensional error or the like. Even in such a case, when the upper cylindrical bearing portions 7a and 8a are pressed against the elastic members 12 and 13, the component force Fh shown in FIG. 5 crushes the convex inclined surface 12b of the elastic member 12, When the pressure acts on the entire circumference of the guide shaft 2 toward the center of the insertion hole 12a, the inside diameter of the elastic member 12 is reduced and closely fitted to the guide shaft 2, the guide shaft 2, It is possible to suppress the occurrence of rattle noise due to the clearance between 3 and the bush 6.
また、機器本体４がシャーシ１の開口部１ａから上方へ突出した突出姿勢にあるとき、前記モータを他方向に回転すると、駆動機構５の両リンクレバー１０，１１が互いの交差角度を拡げるように回動するため、垂下片７，８の上側筒状軸受部７ａ，８ａと下側筒状軸受部７ｂ，８ｂはガイドシャフト２，３に沿って下方へ移動し、機器本体４はシャーシ１の内部に格納された収納姿勢に戻る。 When the motor is rotated in the other direction when the device main body 4 is in the projecting posture projecting upward from the opening 1a of the chassis 1, both link levers 10 and 11 of the drive mechanism 5 expand the crossing angle with each other. The upper cylindrical bearings 7a and 8a and the lower cylindrical bearings 7b and 8b of the hanging pieces 7 and 8 move downward along the guide shafts 2 and 3, and the device body 4 is Return to the stored posture stored inside the.
以上説明したように、本実施形態例に係る車載用電子機器では、シャーシ１のストッパ部１ｂに凸状傾斜面（環状受部）１２ｂを有する弾性部材１２，１３が取り付けられており、機器本体４の上昇に伴って上側筒状軸受部７ａが凸状傾斜面（環状受部）１２ｂに圧接されると、駆動機構５から上側筒状軸受部７ａに付与される上向きの駆動力Ｆｖが凸状傾斜面１２ｂの傾斜角に応じてＦｈという分力に変換され、その反力が上側筒状軸受部７ａに対してラジアル方向の荷重として加わるため、弾性部材１２は上側筒状軸受部７ａとガイドシャフト２の間に挟まれた状態となり、弾性部材１２は柔らかい材料であるのにも関わらず機器本体４の振動に追従して変形することが抑えられ、上側筒状軸受部７ａの軸ガタを弾性部材１２によって吸収することができる。これにより、シャーシ１から突出する突出姿勢に保持された機器本体４に外部振動が作用したとしても、ラットルノイズの発生を効果的に抑制することができる。 As described above, in the on-vehicle electronic device according to this embodiment, the elastic members 12 and 13 having the convex inclined surface (annular receiving portion) 12b are attached to the stopper portion 1b of the chassis 1, and the device body When the upper cylindrical bearing portion 7a is brought into pressure contact with the convex inclined surface (annular receiving portion) 12b with the rise of 4, the upward driving force Fv applied from the drive mechanism 5 to the upper cylindrical bearing portion 7a is convex In accordance with the inclination angle of the inclined surface 12b, it is converted into a component force of Fh, and the reaction force is applied as a load in the radial direction to the upper cylindrical bearing 7a, so the elastic member 12 and the upper cylindrical bearing 7a In the state of being sandwiched between the guide shafts 2, the elastic member 12 is suppressed from following the vibration of the device body 4 despite being a soft material, and deformation is suppressed, and the shaft rattle of the upper cylindrical bearing portion 7a By the elastic member 12 It can be. As a result, even if the external vibration acts on the device body 4 held in the projecting posture projecting from the chassis 1, the generation of rattle noise can be effectively suppressed.
なお、上記実施形態例では、弾性部材１２の環状受部に下方に向かって径寸法を小さくする凸状傾斜面１２ｂを形成し、上側筒状軸受部７ａの貫通孔７ｃの上端開口縁（角部）をこの凸状傾斜面１２ｂに突き当てるようにしているが、図８に示すように、上側筒状軸受部７ａの貫通孔７ｃの上端部に下方に向かって径寸法を小さくする凹状傾斜面７ｄを形成し、この凹状傾斜面７ｄを弾性部材１２の凸状傾斜面１２ｂに圧接させるようにしても良い。 In the above embodiment, a convex inclined surface 12b is formed in the annular receiving portion of the elastic member 12 so as to decrease the diameter downward, and the upper end opening edge (a corner of the through hole 7c of the upper cylindrical bearing 7a) Section) is abutted against the convex inclined surface 12b, but as shown in FIG. 8, a concave inclination in which the diameter is reduced downward toward the upper end of the through hole 7c of the upper cylindrical bearing 7a. The surface 7 d may be formed, and the concave inclined surface 7 d may be in pressure contact with the convex inclined surface 12 b of the elastic member 12.
このように構成すると、図８（ａ）に示すように、上側筒状軸受部７ａがガイドシャフト２に沿って上昇して弾性部材１２に近付いていき、上側筒状軸受部７ａが弾性部材１２に当接した後も上向きの駆動力を継続的に付与することにより、図８（ｂ）に示すように、凹状傾斜面７ｄと凸状傾斜面１２ｂの接触面どうしが密着するだけでなく、上側筒状軸受部７ａの上面と弾性部材１２の下面が密着した状態となる。その結果、上側筒状軸受部７ａに付与された上向きの駆動力が凹状傾斜面７ｄと凸状傾斜面１２ｂの接触面を介してラジアル方向の分力に効率良く変換されると共に、凸状傾斜面１２ｂを含む弾性部材１２の下面全体が上側筒状軸受部７ａに密着して締め付けられた状態となるため、より効果的にラットルノイズの発生を抑制することができる。なお、上向きの駆動力を継続的に付与すると、弾性部材１２は上側筒状軸受部７ａとガイドシャフト２の間で圧縮された状態となり、弾性部材１２は柔らかい材料であるのにも関わらず硬い材料と同じような特性となるため、機器本体４の振動への追従をさらに抑制することができる。 With this configuration, as shown in FIG. 8A, the upper cylindrical bearing 7a rises along the guide shaft 2 and approaches the elastic member 12, and the upper cylindrical bearing 7a becomes the elastic member 12. As shown in FIG. 8 (b), the contact surfaces of the concave inclined surface 7d and the convex inclined surface 12b are not only in close contact with each other by continuously applying an upward driving force even after contact with the The upper surface of the upper cylindrical bearing portion 7a is in close contact with the lower surface of the elastic member 12. As a result, the upward driving force applied to the upper cylindrical bearing portion 7a is efficiently converted into a component force in the radial direction through the contact surface of the concave inclined surface 7d and the convex inclined surface 12b, and the convex inclination Since the entire lower surface of the elastic member 12 including the surface 12 b is in close contact with the upper cylindrical bearing portion 7 a and tightened, generation of rattle noise can be suppressed more effectively. When the upward driving force is continuously applied, the elastic member 12 is compressed between the upper cylindrical bearing portion 7a and the guide shaft 2, and the elastic member 12 is hard despite being a soft material. Since the characteristic is the same as that of the material, the follow-up to the vibration of the device body 4 can be further suppressed.
あるいは、弾性部材１２の環状受部１２ｂを円筒状に形成して凸状傾斜面を省略し、この環状受部１２ｂの下部外周縁（角部）に上側筒状軸受部７ａに形成した凹状傾斜面７ｄを当接させるようにしても良く、要は、弾性部材１２の環状受部１２ｂと上側筒状軸受部７ａとの少なくとも一方に、駆動機構５から上側筒状軸受部７ａに付与される上向きの駆動力をガイドシャフト２の中心に向かうラジアル方向の分力に変換する環状傾斜面（凸状傾斜面１２ｂまたは凹状傾斜面７ｄ）が形成されていれば良い。 Alternatively, the annular receiving portion 12b of the elastic member 12 is formed in a cylindrical shape, and the convex inclined surface is omitted, and the concave inclination formed on the lower outer peripheral edge (corner portion) of the annular receiving portion 12b in the upper cylindrical bearing portion 7a The surface 7d may be in contact, and the point is that the drive mechanism 5 applies the upper cylindrical bearing portion 7a to at least one of the annular receiving portion 12b of the elastic member 12 and the upper cylindrical bearing portion 7a. An annular inclined surface (convex inclined surface 12 b or concave inclined surface 7 d) may be formed to convert the upward driving force into a component force in the radial direction toward the center of the guide shaft 2.
また、上記実施形態例では、機器本体４に表示パネルが搭載された車載用電子機器について説明したが、機器本体に各種メディアの再生装置や操作部材等が搭載されたものであっても良い。 In the embodiment described above, the on-vehicle electronic device in which the display panel is mounted on the device main body 4 has been described. However, the device main body may be mounted with a reproduction device of various media, an operation member, and the like.
なお、特許請求の範囲の記載において、「上下方向」や「昇降動作」という文言を用いているが、これらは重力の方向との関連を示すものではなく、機器本体を水平方向や傾斜方向に沿って設置したものや、機器本体を上下逆に設置したものも本発明に含まれることは言うまでもない。 Although the terms “vertical direction” and “raising and lowering operation” are used in the description of the claims, they do not indicate the relationship with the direction of gravity, and the device main body is horizontally or inclined. It is needless to say that the one installed along with the one installed upside down of the device body is included in the present invention.
１ シャーシ
１ａ 開口部
１ｂ ストッパ部
２，３ ガイドシャフト
４ 機器本体
５ 駆動機構
６ ブッシュ
７，８ 垂下片
７ａ，８ａ 上側筒状軸受部
７ｂ，８ｂ 下側筒状軸受部
７ｃ 貫通孔
７ｄ 凹状傾斜面
９ 軸受
１０，１１ リンクレバー
１２ 弾性部材
１２ａ 挿通孔
１２ｂ 環状受部（凸状傾斜面）
１２ｃ 取付溝
１３ 弾性部材
DESCRIPTION OF SYMBOLS 1 chassis 1a opening part 1b stopper part 2, 3 guide shaft 4 apparatus main body 5 drive mechanism 6 bush 7, 8 hanging piece 7a, 8a upper side cylindrical bearing 7b, 8b lower side cylindrical bearing 7c through hole 7d concave slope 9 Bearing 10, 11 Link lever 12 Elastic member 12a Insertion hole 12b Annular receiving portion (convex inclined surface)
12c mounting groove 13 elastic member
Claims (5)
前記シャーシに設けられたストッパ部に前記ガイドシャフトの上端部を包囲するように環状の弾性部材が取り付けられており、前記弾性部材は前記ガイドシャフトを包囲して下方へ突出する環状受部を有し、前記環状受部と前記筒状軸受部との少なくとも一方に、前記駆動機構から前記筒状軸受部に付与される上向きの駆動力を前記環状受部が前記ガイドシャフトの外周面に圧接される方向の付勢力に変換する環状傾斜面が形成されていることを特徴とする車載用電子機器。 A device body having a chassis, a guide shaft supported by the chassis and extending in the vertical direction, and a cylindrical bearing portion slidably inserted in the guide shaft, and the device body moving up and down along the guide shaft An on-vehicle electronic device having a driving mechanism
An annular elastic member is attached to a stopper portion provided on the chassis so as to surround an upper end portion of the guide shaft, and the elastic member has an annular receiving portion which protrudes downward while surrounding the guide shaft. The annular receiving portion is pressed against the outer peripheral surface of the guide shaft by an upward driving force applied from the driving mechanism to the cylindrical bearing portion on at least one of the annular receiving portion and the cylindrical bearing portion. An on-vehicle electronic device characterized in that an annular inclined surface is formed to be converted into a biasing force in a vertical direction.
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| JP2015223306A JP6510386B2 (en) | 2015-11-13 | 2015-11-13 | Automotive electronics |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2015223306A JP6510386B2 (en) | 2015-11-13 | 2015-11-13 | Automotive electronics |
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| Publication Number | Publication Date |
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| JP2017088070A JP2017088070A (en) | 2017-05-25 |
| JP6510386B2 true JP6510386B2 (en) | 2019-05-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4312900B2 (en) * | 1999-10-19 | 2009-08-12 | 富士通テン株式会社 | In-vehicle display device |
| JP2005067240A (en) * | 2003-08-26 | 2005-03-17 | Fujitsu Ten Ltd | Supporting structure for turning member |
| JP5950779B2 (en) * | 2012-09-27 | 2016-07-13 | アルパイン株式会社 | Automotive electronics |
| JP2014177235A (en) * | 2013-03-15 | 2014-09-25 | Aisin Aw Co Ltd | On-vehicle electronic equipment |
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