JP2013065504A - Light distribution control mechanism for impact-driving movable optical component - Google Patents

Light distribution control mechanism for impact-driving movable optical component Download PDF

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Publication number
JP2013065504A
JP2013065504A JP2011204371A JP2011204371A JP2013065504A JP 2013065504 A JP2013065504 A JP 2013065504A JP 2011204371 A JP2011204371 A JP 2011204371A JP 2011204371 A JP2011204371 A JP 2011204371A JP 2013065504 A JP2013065504 A JP 2013065504A
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Prior art keywords
actuator
light distribution
optical component
movable optical
shade
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JP2011204371A
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Japanese (ja)
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Mitsuyuki Mochizuki
光之 望月
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Koito Manufacturing Co Ltd
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Koito Manufacturing Co Ltd
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Priority to JP2011204371A priority Critical patent/JP2013065504A/en
Priority to PCT/JP2012/073978 priority patent/WO2013042697A1/en
Publication of JP2013065504A publication Critical patent/JP2013065504A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
    • B60Q1/076—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle by electrical means including means to transmit the movements, e.g. shafts or joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
    • F21S41/689—Flaps, i.e. screens pivoting around one of their edges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
    • F21S41/698—Shaft-shaped screens rotating along its longitudinal axis

Abstract

PROBLEM TO BE SOLVED: To attain: power saving by dispensing with a power transmission member between an output part of an actuator and an input part of a movable optical component; downsizing of a whole structure; and stopping and holding of the movable optical component by a friction force at stoppage of power.SOLUTION: For a headlight for vehicle 1 turnably provided with a shade 5 between an LED-array light source 3 and a lens 4, an input plate 8 is firmly fixed to arm parts 7 of the shade 5. An actuator 12 is provided with a rod-like or a spherical output part 13 welded to the input plate 8 and a drive part 14 driving the output part 13. During energization of the actuator 12, the drive part 14 gives the output part 13 vibration of sawtooth waveforms, and the output part 13 impact-drives the shade 5 counteracting a preload between itself and the input plate 8. At stoppage of the energization, the output part 13 retains the shade 5 at a stop position by a frictional force based on the preload.

Description

本発明は、照明装置の配光を変えるための可動光学部品と、可動光学部品を駆動するアクチュエータとを備えた配光可変機構に関する。   The present invention relates to a variable light distribution mechanism including a movable optical component for changing the light distribution of an illumination device and an actuator for driving the movable optical component.

従来、車両用前照灯において、レンズ、シェード、反射鏡などの可動光学部品を駆動し、車両前方の配光を変化させる配光可変機構が知られている。例えば、図８に示す車両用前照灯１は光源３とレンズ４との間にシェード５を回動可能に備え、配光可変機構５１がシェード５をステッピングモータ５２によりギヤ列５３を介して駆動するように構成されている。   Conventionally, in a vehicle headlamp, a variable light distribution mechanism that drives movable optical components such as a lens, a shade, and a reflecting mirror to change the light distribution in front of the vehicle is known. For example, the vehicle headlamp 1 shown in FIG. 8 includes a shade 5 that can rotate between the light source 3 and the lens 4, and the light distribution variable mechanism 51 uses a stepping motor 52 to drive the shade 5 through a gear train 53. It is configured to drive.

なお、特許文献１には、ロービームおよびハイビームの配光パターンを形成する複数のシェードをモータによりリンクを介して駆動する配光可変機構が記載されている。特許文献２には、シェード駆動用モータに加え、光軸を水平方向に旋回するスイブル用アクチュエータと、光軸を垂直方向に調整するレベリング用アクチュエータとを備えた配光可変機構が記載されている。   Patent Document 1 describes a variable light distribution mechanism that drives a plurality of shades forming low beam and high beam light distribution patterns via a link by a motor. Patent Document 2 describes a variable light distribution mechanism that includes a swivel actuator that rotates an optical axis in a horizontal direction and a leveling actuator that adjusts the optical axis in a vertical direction in addition to a shade driving motor. .

特開２０１０−２５７９０９号公報JP 2010-257909 A 特開２０１１−０６３０７０号公報JP 2011-063070 A

ところが、従来の配光可変機構によると、アクチュエータの動力を可動光学部品に伝えるためにギヤやリンク等の動力伝達部材が必要になり、配光可変機構の全体が大型化する不都合があった。また、光源を点灯させているときには、可動光学部品の停止中でも、その位置を保持するためにアクチュエータを通電状態にしておく必要があり、電力消費量が嵩むという問題点もあった。   However, according to the conventional variable light distribution mechanism, a power transmission member such as a gear and a link is required to transmit the power of the actuator to the movable optical component, and there is a disadvantage that the entire variable light distribution mechanism becomes large. Further, when the light source is turned on, even when the movable optical component is stopped, it is necessary to keep the actuator energized in order to maintain the position of the movable optical component, resulting in a problem that power consumption increases.

そこで、本発明の目的は、小型化および省電力化を達成できる配光可変機構を提供することにある。   Therefore, an object of the present invention is to provide a variable light distribution mechanism that can achieve miniaturization and power saving.

上記課題を解決するために、本発明は、次のような配光可変機構を提供する。
（１）照明装置の配光を変えるための可動光学部品と、可動光学部品を駆動するアクチュエータとを備え、アクチュエータが可動光学部品の入力部に圧接する出力部と、通電時に出力部と入力部との間の予圧に抗して出力部を変位させる駆動部とを含み、駆動部への通電が停止したときに、出力部が予圧に基づく摩擦力で可動光学部品を停止位置に保持することを特徴とする配光可変機構。 In order to solve the above problems, the present invention provides the following light distribution variable mechanism.
(1) An output unit that includes a movable optical component for changing the light distribution of the illumination device and an actuator that drives the movable optical component, the actuator being pressed against the input unit of the movable optical component, and the output unit and the input unit when energized A drive unit that displaces the output unit against the preload between the output unit, and when the energization to the drive unit is stopped, the output unit holds the movable optical component at the stop position by a frictional force based on the preload. A variable light distribution mechanism.

（２）アクチュエータの駆動部が、通電時にノコギリ波形の振動を出力部に与える振動素子を含むことを特徴とする（１）に記載の配光可変機構。 (2) The variable light distribution mechanism according to (1), wherein the actuator drive unit includes a vibrating element that applies a sawtooth vibration to the output unit when energized.

（３）アクチュエータの駆動部が、出力部の変位方向へ直列に接合された少なくとも２つの振動素子を含むことを特徴とする（２）に記載の配光可変機構。 (3) The variable light distribution mechanism according to (2), wherein the actuator drive unit includes at least two vibration elements joined in series in the displacement direction of the output unit.

（４）可動光学部品の入力部が、アクチュエータの出力部に弾性接触する部材を含むことを特徴とする（１），（２）または（３）に記載の配光可変機構。 (4) The variable light distribution mechanism according to (1), (2), or (3), wherein the input unit of the movable optical component includes a member that elastically contacts the output unit of the actuator.

（５）弾性接触する部材が、アクチュエータの出力部を挟持する一対の板バネを含むことを特徴とする（４）に記載の配光可変機構。 (5) The variable light distribution mechanism according to (4), wherein the elastic contact member includes a pair of leaf springs that sandwich the output portion of the actuator.

本発明の配光可変機構によれば、アクチュエータの出力部を可動光学部品の入力部に接触させたので、出力部と入力部との間の動力伝達部材を省き、全体を小型に構成できる。また、出力部が入力部に予圧をかけた状態で接触しているため、アクチュエータへの通電を停止したときに、出力部と入力部との摩擦力で可動光学部品を停止位置に保持でき、この間の電力を節約できるという効果もある。   According to the variable light distribution mechanism of the present invention, since the output part of the actuator is brought into contact with the input part of the movable optical component, the power transmission member between the output part and the input part can be omitted, and the whole can be configured in a small size. In addition, since the output unit is in contact with the input unit with a preload applied, when the energization to the actuator is stopped, the movable optical component can be held at the stop position by the frictional force between the output unit and the input unit. There is also an effect that power can be saved during this time.

本発明の実施例１を示す車両用前照灯の斜視図である。It is a perspective view of the vehicle headlamp which shows Example 1 of this invention. 図１の前照灯の配光可変機構を示す立面図である。It is an elevation view which shows the light distribution variable mechanism of the headlamp of FIG. 図２の配光可変機構におけるアクチュエータの出力を示す波形図である。It is a wave form diagram which shows the output of the actuator in the light distribution variable mechanism of FIG. アクチュエータの変更例を示す斜視図である。It is a perspective view which shows the example of a change of an actuator. アクチュエータの別の変更例を示す斜視図である。It is a perspective view which shows another example of a change of an actuator. 本発明の実施例２を示す車両用前照灯の斜視図である。It is a perspective view of the vehicle headlamp which shows Example 2 of this invention. 図６の前照灯の配光可変機構を示す立面図である。It is an elevation view which shows the light distribution variable mechanism of the headlamp of FIG. 従来の配光可変機構を示す車両用前照灯の斜視図である。It is a perspective view of the vehicle headlamp which shows the conventional light distribution variable mechanism.

以下、本発明を照明装置としての車両用前照灯に具体化した実施例を図面に基づいて説明する。図１〜図５に示す実施例１の配光可変機構１１は、前照灯１のシェード５をアクチュエータ１１の棒状出力部１３によって駆動している。図６、図７に示す実施例２の配光可変機構２１は、シェード５をアクチュエータ２２の球状出力部２３によって駆動している。各図において、同一の符号は同一または類似する構成要素を示す。   DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments in which the present invention is embodied in a vehicle headlamp as a lighting device will be described below with reference to the drawings. In the variable light distribution mechanism 11 according to the first embodiment shown in FIGS. 1 to 5, the shade 5 of the headlamp 1 is driven by the rod-shaped output portion 13 of the actuator 11. In the variable light distribution mechanism 21 of the second embodiment shown in FIGS. 6 and 7, the shade 5 is driven by the spherical output portion 23 of the actuator 22. In each drawing, the same reference numerals indicate the same or similar components.

図１に示す車両用前照灯１は、灯具ハウジング（図示略）の内側にベース２を備え、ベース２の前面に複数のＬＥＤを左右に配列したアレイ光源３が装着されている。アレイ光源３とレンズ４との間にはシェード５が配置され、水平軸６により上下に回動可能に支持されている。そして、シェード５の一端側にアクチュエータ１２が設置され、アクチュエータ１２とシェード５により車両用前照灯１の配光可変機構１１が構成されている。   A vehicle headlamp 1 shown in FIG. 1 includes a base 2 inside a lamp housing (not shown), and an array light source 3 in which a plurality of LEDs are arranged on the left and right are mounted on the front surface of the base 2. A shade 5 is disposed between the array light source 3 and the lens 4 and is supported by a horizontal shaft 6 so as to be rotatable up and down. And the actuator 12 is installed in the one end side of the shade 5, and the light distribution variable mechanism 11 of the vehicle headlamp 1 is comprised by the actuator 12 and the shade 5. FIG.

シェード５は、車両前方の配光パターンを変える可動光学部品であり、アレイ光源３に沿って左右に長く形成されている。シェード５の両端には、水平軸６が貫通する腕部７が形成され、一方の腕部７の外面に入力板８が固着されている。アクチュエータ１２は、入力板８に圧接する棒状出力部１３と、棒状出力部１３をその軸線方向へ変位させる駆動部１４とを備え、駆動部１４が取付板１５（図２参照）によって灯具ハウジングに取り付けられている。   The shade 5 is a movable optical component that changes the light distribution pattern in front of the vehicle, and is formed long along the array light source 3 from side to side. At both ends of the shade 5, arm portions 7 through which the horizontal shaft 6 passes are formed, and an input plate 8 is fixed to the outer surface of one arm portion 7. The actuator 12 includes a rod-like output portion 13 that is pressed against the input plate 8 and a drive portion 14 that displaces the rod-like output portion 13 in the axial direction thereof. The drive portion 14 is attached to the lamp housing by a mounting plate 15 (see FIG. 2). It is attached.

図２に示すように、シェード５の腕部７は板バネ材料で形成され、シェード５にアクチュエータ１２を組み付けた状態で、腕部７が弾性変形して入力板８と棒状出力部１３との間に所定量の予圧Ｐを発生させる。アクチュエータ１２の棒状出力部１３はＣＦＲＰ（炭素繊維強化プラスチック）等の軽量な耐摩耗性材料で形成され、棒状出力部１３の基端が駆動部１４の端面に結合されている。   As shown in FIG. 2, the arm portion 7 of the shade 5 is formed of a leaf spring material. With the actuator 12 assembled to the shade 5, the arm portion 7 is elastically deformed and the input plate 8 and the rod-shaped output portion 13 In the meantime, a predetermined amount of preload P is generated. The rod-like output portion 13 of the actuator 12 is formed of a lightweight wear-resistant material such as CFRP (carbon fiber reinforced plastic), and the base end of the rod-like output portion 13 is coupled to the end surface of the drive portion 14.

アクチュエータ１２の駆動部１４は、圧電素子や磁歪素子からなる大小２つの振動素子１４Ａ，１４Ｂを棒状出力部１３の軸線方向へ直列に接合させて構成されている。そして、アクチュエータ１２の通電時に、駆動部１４が棒状出力部１３を入力板７との間の予圧Ｐに抗して変位させ、アクチュエータ１２への通電が停止したときに、棒状出力部１３が予圧Ｐに基づく摩擦力でシェード５を停止位置に保持するようになっている。   The drive unit 14 of the actuator 12 is configured by joining two large and small vibration elements 14 </ b> A and 14 </ b> B made of a piezoelectric element or a magnetostrictive element in series in the axial direction of the rod-shaped output unit 13. When the actuator 12 is energized, the drive unit 14 displaces the rod-shaped output unit 13 against the preload P between the input plate 7 and the rod-shaped output unit 13 is preloaded when the energization to the actuator 12 is stopped. The shade 5 is held at the stop position by the frictional force based on P.

図２に示すアクチュエータ１２では、通電時に大型振動素子１４Ａが小型振動素子１４Ｂよりも大きな変位量で振動し、駆動部１４がノコギリ波形の振動を棒状出力部１３に付与する。例えば、図３（ａ）に示すように、振動素子Ａ，Ｂ共にｓｉｎ波の駆動信号を入力し、入力波形の周期と振幅をそれぞれ素子Ａが素子Ｂの２倍となるように設定した場合、素子Ａ，Ｂの合成変位量は図に太線で示すようなノコギリ波形を形成する。   In the actuator 12 shown in FIG. 2, the large vibration element 14 </ b> A vibrates with a larger displacement than the small vibration element 14 </ b> B when energized, and the drive unit 14 imparts a sawtooth waveform vibration to the rod-shaped output unit 13. For example, as shown in FIG. 3A, when a sinusoidal drive signal is input to both the vibration elements A and B, the period and amplitude of the input waveform are set so that the element A is twice that of the element B, respectively. The combined displacement amounts of the elements A and B form a sawtooth waveform as shown by a thick line in the figure.

従って、駆動部１４はノコギリ波形の振動を棒状出力部１３に与え、棒状出力部１３と入力板８との摩擦力並びにシェード５の慣性を利用し、可動光学部品であるシェード５をインパクト駆動することができる。また、図３（ｂ）に示すように、振動素子Ｂの入力波形の位相をずらすことにより、駆動部１４が発生するノコギリ波形を逆転させ、シェード５を逆方向に回動することもできる。   Accordingly, the drive unit 14 applies a sawtooth waveform vibration to the rod-like output unit 13 and uses the frictional force between the rod-like output unit 13 and the input plate 8 and the inertia of the shade 5 to drive the shade 5 which is a movable optical component. be able to. Further, as shown in FIG. 3B, by shifting the phase of the input waveform of the vibration element B, the sawtooth waveform generated by the drive unit 14 can be reversed and the shade 5 can be rotated in the reverse direction.

図４に示すアクチュエータ１２では、駆動部１４の全体が一つの振動素子で構成されている。駆動部１４の下部１４ａおよび上部１４ｂには、表面と裏面に電極１６Ａ，１６Ｂ（裏面側は図示略）が設けられている。そして、各電極１６Ａ，１６Ｂに位相を例えば９０°ずらした駆動信号が入力され、駆動部１４の下部１４ａと上部１４ｂがそれぞれ異なる波形で変位し、全体としてノコギリ波形の振動を棒状出力部１３に付与して、シェード５をインパクト駆動できるようになっている。   In the actuator 12 shown in FIG. 4, the entire drive unit 14 is composed of one vibration element. The lower portion 14a and the upper portion 14b of the drive unit 14 are provided with electrodes 16A and 16B (the back side is not shown) on the front and back surfaces. Then, a drive signal having a phase shifted by 90 °, for example, is input to each of the electrodes 16A and 16B, and the lower portion 14a and the upper portion 14b of the drive unit 14 are displaced with different waveforms, respectively. The shade 5 can be driven by impact.

図５に示すアクチュエータ１２では、棒状出力部１３および駆動部１４の取付手段として錘１７が用いられている。錘１７は、駆動部１４の振動素子１４Ａ，１４Ｂと比較して質量が十分に大きく、棒状出力部１３の振動を安定させる作用を発揮する。なお、錘１７として磁石を使用することも可能である。   In the actuator 12 shown in FIG. 5, a weight 17 is used as a mounting means for the rod-shaped output portion 13 and the drive portion 14. The weight 17 has a sufficiently large mass as compared with the vibration elements 14 </ b> A and 14 </ b> B of the drive unit 14, and exhibits the action of stabilizing the vibration of the rod-shaped output unit 13. A magnet can be used as the weight 17.

次に、本発明の実施例２を図６、図７に基づいて説明する。実施例２の配光可変機構２１は、実施例１と同様、車両用前照灯１のシェード５と、シェード５を水平軸６の周りで駆動するアクチュエータ２２とから構成されている。水平軸６には、挟持板２６がシェード５の腕部７に外側から対向するように支持され、腕部７と挟持板２６との間にアクチュエータ２２の球状出力部２３が挟持されている。   Next, a second embodiment of the present invention will be described with reference to FIGS. Similar to the first embodiment, the variable light distribution mechanism 21 according to the second embodiment includes a shade 5 of the vehicle headlamp 1 and an actuator 22 that drives the shade 5 around a horizontal axis 6. A holding plate 26 is supported on the horizontal shaft 6 so as to face the arm portion 7 of the shade 5 from the outside, and the spherical output portion 23 of the actuator 22 is held between the arm portion 7 and the holding plate 26.

腕部７および挟持板２６は、共に板バネ材料で形成され、シェード５の入力部として機能する。アクチュエータ１２の組付状態では、腕部７と挟持板２６がそれぞれ弾性変形し、球状出力部２３との間に所定量の予圧Ｐを発生させる。アクチュエータ２２は、球状出力部２３を予圧Ｐの作用方向と直角の方向へ変位させる駆動部２４を備え、駆動部２４が取付板２５または錘によって灯具ハウジングに取り付けられている。   The arm portion 7 and the sandwiching plate 26 are both formed of a leaf spring material and function as an input portion of the shade 5. In the assembled state of the actuator 12, the arm portion 7 and the clamping plate 26 are elastically deformed to generate a predetermined amount of preload P between the spherical output portion 23. The actuator 22 includes a drive unit 24 that displaces the spherical output unit 23 in a direction perpendicular to the direction in which the preload P acts, and the drive unit 24 is attached to the lamp housing by a mounting plate 25 or a weight.

そして、実施例１と同様、アクチュエータ２２の通電時に、駆動部２４がノコギリ波形の振動を球状出力部２３に付与し、球状出力部２３が腕部７および挟持板２６による予圧Ｐに抗して変位し、シェード５をインパクト駆動する。また、アクチュエータ２２への通電が停止したときには、球状出力部２３が予圧Ｐに基づく摩擦力でシェード５を停止位置に保持する。従って、前照灯１の配光可変機構２１を小型かつ省電力に構成することができる。   As in the first embodiment, when the actuator 22 is energized, the drive unit 24 applies a sawtooth waveform vibration to the spherical output unit 23, and the spherical output unit 23 resists the preload P by the arm unit 7 and the sandwiching plate 26. Displacement and impact drive the shade 5. When the energization of the actuator 22 is stopped, the spherical output unit 23 holds the shade 5 at the stop position with the frictional force based on the preload P. Therefore, the variable light distribution mechanism 21 of the headlamp 1 can be configured to be small and save power.

なお、上記実施例では、車両用前照灯１のシェード５を例示したが、シェード以外の可動光学部品、例えば、ＬＥＤ光源基板、リフレクタ、レンズ等に本発明を適用することができ、また、前照灯以外の照明装置、例えば、尾灯、標識灯、警告灯等に本発明を適用することもできる。その他、本発明は、上記実施例に限定されるものではなく、発明の趣旨を逸脱しない範囲で、各部の形状や構成を適宜に変更して実施することも可能である。   In the above embodiment, the shade 5 of the vehicle headlamp 1 is illustrated, but the present invention can be applied to movable optical components other than the shade, such as an LED light source substrate, a reflector, and a lens. The present invention can also be applied to lighting devices other than headlamps, such as tail lights, marker lights, warning lights, and the like. In addition, the present invention is not limited to the above-described embodiments, and can be implemented by appropriately changing the shape and configuration of each part without departing from the spirit of the invention.

１ 車両用前照灯
５ 可動光学部品としてのシェード
７ シェードの腕部
８ シェードの入力板
１１ 配光可変機構（実施例１）
１２ アクチュエータ
１３ 棒状出力部
１４ 駆動部
２１ 配光可変機構（実施例２）
２２ アクチュエータ
２３ 球状出力部
２４ 駆動部
２６ 挟持板 DESCRIPTION OF SYMBOLS 1 Vehicle headlamp 5 Shade as movable optical component 7 Shade arm part 8 Shade input board 11 Light distribution variable mechanism (Example 1)
12 Actuator 13 Bar-shaped Output Unit 14 Drive Unit 21 Light Distribution Variable Mechanism (Embodiment 2)
22 Actuator 23 Spherical output unit 24 Drive unit 26 Nipping plate

Claims (5)

照明装置の配光を変えるための可動光学部品と、可動光学部品を駆動するアクチュエータとを備え、アクチュエータが可動光学部品の入力部に圧接する出力部と、通電時に出力部と入力部との間の予圧に抗して出力部を変位させる駆動部とを含み、駆動部への通電が停止したときに、出力部が前記予圧に基づく摩擦力で可動光学部品を停止位置に保持することを特徴とする配光可変機構。   A movable optical component for changing the light distribution of the illuminating device and an actuator for driving the movable optical component, and an output unit where the actuator is pressed against the input unit of the movable optical component, and between the output unit and the input unit when energized And a drive unit that displaces the output unit against the preload, and when the energization to the drive unit is stopped, the output unit holds the movable optical component at the stop position by the frictional force based on the preload. Variable light distribution mechanism. 前記アクチュエータの駆動部が、通電時にノコギリ波形の振動を出力部に与える振動素子を含む請求項１記載の配光可変機構。   The variable light distribution mechanism according to claim 1, wherein the actuator drive unit includes a vibration element that applies a sawtooth vibration to the output unit when energized. 前記アクチュエータの駆動部が、出力部の変位方向へ直列に接合された少なくとも２つの振動素子を含む請求項２記載の配光可変機構。   The light distribution variable mechanism according to claim 2, wherein the actuator drive unit includes at least two vibration elements joined in series in a displacement direction of the output unit. 前記可動光学部品の入力部が、アクチュエータの出力部に弾性接触する部材を含む請求項１，２または３記載の配光可変機構。   The light distribution variable mechanism according to claim 1, wherein the input portion of the movable optical component includes a member that elastically contacts the output portion of the actuator. 前記部材が、アクチュエータの出力部を挟持する一対の板バネを含む請求項４記載の配光可変機構。   The light distribution variable mechanism according to claim 4, wherein the member includes a pair of leaf springs that sandwich the output portion of the actuator.
JP2011204371A 2011-09-20 2011-09-20 Light distribution control mechanism for impact-driving movable optical component Pending JP2013065504A (en)

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KR101786291B1 (en) 2016-01-08 2017-10-17 현대자동차주식회사 Shield drive device for head lamp
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CN107234373A (en) * 2017-06-30 2017-10-10 惠州市柯帝士科技有限公司 Plate body welder
CN107234373B (en) * 2017-06-30 2019-04-23 新昌县城关宾立机械厂 Plate body welder

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