JPH0559701U - Optical axis adjustment device for headlight - Google Patents
Optical axis adjustment device for headlightInfo
- Publication number
- JPH0559701U JPH0559701U JP466492U JP466492U JPH0559701U JP H0559701 U JPH0559701 U JP H0559701U JP 466492 U JP466492 U JP 466492U JP 466492 U JP466492 U JP 466492U JP H0559701 U JPH0559701 U JP H0559701U
- Authority
- JP
- Japan
- Prior art keywords
- optical axis
- level
- case
- reflector
- leaf spring
- 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.)
- Granted
Links
Abstract
(57)【要約】
【目的】 水準器を用いて前照灯の正しい光軸調整状態
を再現する方式の光軸調整装置を改良して、上記方式の
長所（別段の特殊工具を要せず容易に調整できること）
を損うことなく、構成部品点数を減少させ、構造を簡単
にする。
【構成】 水準器３′のケース３ｂを、弾性を有する合
成樹脂材料を用いて、板バネ部材３ｃと一体成形して、
上記ケース３ｂの底壁と板バネ部材３ｃとをＵ字状に連
結する。上記Ｕ字状のバネの撓みを変化させて水準器
３′を傾動させるように調整ネジ１１を設ける。
(57) [Summary] [Purpose] The optical axis adjusting device that uses a level to reproduce the correct optical axis adjusting state of the headlight has been improved, and the advantages of the above method (without the need for special tools) Easy to adjust)
The number of components is reduced and the structure is simplified without compromising the structure. [Structure] A case 3b of a spirit level 3'is integrally molded with a leaf spring member 3c using an elastic synthetic resin material,
The bottom wall of the case 3b and the leaf spring member 3c are connected in a U shape. An adjusting screw 11 is provided so as to tilt the level 3'by changing the bending of the U-shaped spring.
Description
【０００１】[0001]
本考案は、例えば自動車用前照灯の如く、車両に装備される照明用灯具の光軸 方向を調整する装置に関するものである。更に詳しくは、光軸を略水平に設置さ れている車両用灯具の、該光軸を上下に傾動せしめるように調整する装置に関す るものである。 The present invention relates to a device for adjusting the optical axis direction of a lighting fixture mounted on a vehicle, such as a vehicle headlamp. More specifically, the present invention relates to a device for adjusting the optical axis of a vehicle lamp whose optical axis is installed substantially horizontally so that the optical axis can be vertically tilted.
【０００２】[0002]
自動車用の前照灯は、上向き過ぎであると対向車に眩惑を与えるので危険であ る。そうかと言って下向き過ぎであると走行方向前方の路上が旨く照明されない ので運転し難い。そこで自動車用前照灯は、これを車体に装着した状態で、その 光軸を若干上向き・下向きに調節する装置を設ける必要が有る。 前照灯は一般にランプハウジング内に凹面反射鏡を設けるとともに、該凹面反 射鏡の焦点付近に光源バルブを位置せしめた構造であり、前照灯の光軸とは前記 凹面反射鏡の対称軸の意である。 従って、光軸を調整するには、 （イ）ランプハウジングと凹面反射鏡との関係位置を一定に保った侭で、該ラン プハウジングを上下に傾動させるか、 （ロ）ランプハウジングを車体に取り付けた侭で動かさず、凹面反射鏡を上下に 傾動させるか、 二つの方法が有る。 Headlights for automobiles are dangerous because they dazzle oncoming vehicles if they are facing upwards too much. On the other hand, if it is facing down too much, the road ahead in the direction of travel will not be illuminated well and it will be difficult to drive. Therefore, it is necessary to provide a vehicle headlamp with a device for adjusting the optical axis of the vehicle headlamp slightly upward and downward with the headlamp mounted on the vehicle body. A headlamp generally has a structure in which a concave reflecting mirror is provided in the lamp housing and a light source bulb is located near the focal point of the concave reflecting mirror. The optical axis of the headlamp is the symmetry axis of the concave reflecting mirror. It means Therefore, in order to adjust the optical axis, (a) tilt the lamp housing up and down while keeping the relative position of the lamp housing and the concave reflecting mirror constant, or (b) mount the lamp housing on the vehicle body. There are two methods of tilting the concave reflecting mirror up and down without moving it with the attached windshield.
【０００３】 図４は車体に固定されたランプハウジング１の中にリフレクタ２を傾動調節可 能に支持した方式の光軸調整装置（上記の（ロ）に属し、リフレクタ可動形と呼 ばれる）の１例を示す断面図である。上記リフレクタ２が上下，左右に傾動せし められると、該リフレクタの対称軸である光軸Ｚが上下，左右に傾動する。 上記光軸Ｚの方向は交通法規によって規制されているので厳密な調整を必要と するが、専門設備と専門技術者によらねば容易に調整できない。そこで自動車製 造工場から出荷される前、および専門整備工場で設備される際は専門技術者が専 用の調整設備によって光軸方向を調整する。ところが、光軸方向調整済みの自動 車車台に架装を施したり、積荷状態が著しく変わったりすると該自動車の懸架ス プリングの撓みが変化して光軸調整が狂ってしまうので再調整が必要になる。 この場合の再調整は、全然基準の無い状態から出発するのではなく、既に一度 正確な調整が行われているので、その調整状態を再現させるという方法をとれば 専門の設備や技術者によらなくても実施することができる。こうした考え方に基 づく光軸調整装置（詳しくは、光軸調整済み状態の再現装置）が種々案出されて 実用されている。例えばリフレクタ上面の特定個所（図示せず）を基準面と定め ておいて、専門の設備，技術者による光軸調整を完了した状態で上記の基準面を 水平に仕上げておいたならば、該基準面が水平となるように再調整すれば元の調 整状態を再現することができる。 図４に示した従来例は、上述の考え方を改良したもので、リフレクタ２に対し て水準器３を取り付けてある。専門設備，技術者による光軸調整を終えた後、該 水準器の気泡３ａが中央基準線に位置するように該水準器３をリフレクタ２に対 して固定しておくと、車体の架装や積荷によって光軸Ｚの方向が狂った後、リフ レクタ２の傾動調節手段（図示省略）を操作して気泡３ａが中央基準線位置とな るように調節すれば正しい光軸方向が再現される。このような機能を持たせるた め、本従来例の水準器式の光軸調整装置（光軸調整状態の再現装置）は、リフレ クタ２の後方にブラケット４を取付ネジ５で固定し、このブラケット４に対して バネ手段６を介して水準器３を取り付け、調整ネジ７によって水準器３を若干傾 動調整できるようにしてある。上記のようにバネ手段６と調整ネジ７とによって 傾動調整できるようにした従来例の他、シム調節可能なように構成した従来例も 有る。このようにしてランプハウジング内のリフレクタ２に取り付けられた水準 器３は、該ランプハウジング１の水準器取付用の開口１ａから後方に突出し、透 明キャップ８で覆われている。 上記のように構成された従来例の装置（図４）においては、専門設備，技術者 による光軸調整を終えたとき、透明キャップ８を取り外して水準器３の気泡３ａ が中央基準線と一致するように調整ネジ７を操作し、透明キャップ８を取りつけ ておく。その後、架装や積荷などの関係で光軸方向を狂わせたおそれが有ると考 えられたときは、当該自動車を水平な床面上に停止させた状態で、透明キャップ ８の外側から水準器３の気泡３ａの位置を視認する。このとき気泡３ａが中央基 準線に一致していなければ、透明キャップ８を取り外すことなくその外側から気 泡３ａの動きを目視しつつ、該気泡３ａが中央基準線と一致するようにリフレク タ２を傾動調節すれば良い。この操作によって光軸Ｚの上下方向は、正確に調整 された元の状態に復元する。 図５は上記従来例を部分的に破断して描いた平面図であって、ランプハウジン グ１，水準器３，ブラケット４は先に説明した部材である。上記のブラケット４ は取付ネジ５によってリフレクタ（本図６において図示省略）に固着されている 。調整ネジ７，透明キャップ８，リフレクタ傾動調整ネジ９，キャップ取付ネジ １０は先に説明した部材である。本図６は透明キャップ８の先端部を破断して描 いてあるので水準器３の気泡３ａが実線で表わされているが、このキャップ８は 透明であるから破断しなくても気泡３ａの状態は本図のように視認することがで きる。FIG. 4 shows an optical axis adjusting device of a system in which a reflector 2 is supported in a lamp housing 1 fixed to a vehicle body so that tilting can be adjusted (which belongs to the above (b) and is called a movable reflector type). It is sectional drawing which shows an example. When the reflector 2 is tilted vertically and horizontally, the optical axis Z which is the axis of symmetry of the reflector tilts vertically and horizontally. Since the direction of the optical axis Z is regulated by the traffic regulations, it requires strict adjustment, but it cannot be easily adjusted unless it is done by specialized equipment and a specialized engineer. Therefore, before being shipped from the automobile manufacturing factory, and when the equipment is installed in a specialized maintenance factory, a specialist engineer adjusts the optical axis direction with a dedicated adjustment facility. However, if the vehicle chassis that has been adjusted in the optical axis direction is mounted on the chassis, or if the load condition changes significantly, the bending of the suspension sprue of the car will change and the optical axis adjustment will go wrong, so readjustment is necessary. Become. In this case, the readjustment does not start from the state where there is no standard at all, but the accurate adjustment has already been performed once.Therefore, if a method of reproducing the adjusted state is taken, it will not be possible for specialized equipment or engineers to do so. It can be implemented without. Based on this concept, various optical axis adjusting devices (more specifically, devices for reproducing the optical axis adjusted state) have been devised and put into practical use. For example, if a specific part (not shown) on the upper surface of the reflector is defined as a reference surface and the above-mentioned reference surface is finished horizontally with specialized equipment and technicians completing the optical axis adjustment, If the readjustment is performed so that the reference plane becomes horizontal, the original adjustment state can be reproduced. The conventional example shown in FIG. 4 is an improved version of the above-mentioned idea, in which a level 3 is attached to a reflector 2. After finishing the optical axis adjustment by specialized equipment and technicians, if the level 3 is fixed to the reflector 2 so that the bubble 3a of the level is located at the central reference line, the bodywork of After the direction of the optical axis Z is changed due to a load or a load, the correct optical axis direction can be reproduced by operating the tilt adjusting means (not shown) of the reflector 2 to adjust the bubble 3a to the central reference line position. It In order to have such a function, the level adjusting type optical axis adjusting device (reproducing device of the optical axis adjusting state) of this conventional example fixes the bracket 4 to the rear of the reflector 2 with the mounting screw 5, and The level 3 is attached to the bracket 4 via the spring means 6, and the level 3 can be slightly tilted and adjusted by the adjusting screw 7. In addition to the conventional example in which the tilt can be adjusted by the spring means 6 and the adjusting screw 7 as described above, there is a conventional example in which the shim can be adjusted. The level 3 attached to the reflector 2 in the lamp housing in this manner projects rearward from the level mounting opening 1a of the lamp housing 1 and is covered with the transparent cap 8. In the conventional apparatus (FIG. 4) configured as described above, the transparent cap 8 is removed and the bubble 3a of the level 3 coincides with the central reference line when the optical axis adjustment by the specialized equipment and engineer is completed. Operate the adjusting screw 7 to attach it and attach the transparent cap 8. After that, if it is considered that the optical axis may have been misaligned due to the bodywork or cargo, the level of the car should be stopped from the outside of the transparent cap 8 with the car stopped on a horizontal floor. The position of the bubble 3a of 3 is visually recognized. At this time, if the bubble 3a does not coincide with the center reference line, the movement of the bubble 3a is visually observed from the outside without removing the transparent cap 8 and the reflector 3 is adjusted so that the bubble 3a coincides with the center reference line. Adjust the tilt of 2. By this operation, the vertical direction of the optical axis Z is restored to the original state which has been adjusted accurately. FIG. 5 is a plan view in which the above-mentioned conventional example is partially broken and drawn, and the lamp housing 1, the level 3 and the bracket 4 are the members described above. The bracket 4 is fixed to a reflector (not shown in FIG. 6) by a mounting screw 5. The adjusting screw 7, the transparent cap 8, the reflector tilt adjusting screw 9, and the cap mounting screw 10 are the members described above. The bubble 3a of the level 3 is shown by a solid line in FIG. 6 because the tip of the transparent cap 8 is drawn in a broken manner. However, since the cap 8 is transparent, the bubble 3a is not broken even if it is not broken. The condition can be visually confirmed as shown in this figure.
【０００４】[0004]
前記従来例の光軸調整装置は構造複雑で構成部品点数が多く、コスト高である 。本考案は上記の不具合を解消するために為されたものであって、別段の特殊工 具を必要とせず容易に光軸の調整状態を再現し得るという水準器式調整装置の長 所を損なうことなく改良し、部品点数が少なく製造コストの安い、自動車用前照 灯の光軸調整装置（詳しくは、正しく調整された光軸方向を再現する装置）を提 供することを目的とする。 The optical axis adjusting device of the conventional example has a complicated structure, a large number of constituent parts, and a high cost. The present invention has been made to solve the above-mentioned problems, and impairs the advantage of a leveling type adjusting device that can easily reproduce the adjustment state of the optical axis without the need for a special tool. It is an object of the present invention to provide an optical axis adjusting device for an automobile headlamp (specifically, a device that reproduces a correctly adjusted optical axis direction), which is improved without any modification and has a low number of parts and a low manufacturing cost.
【０００５】[0005]
上記の目的を達成するために創作した本考案の基本的原理を略述すると、 水準器のケースと一体に成形されたＵ字形の板バネ状部材によって、該ケース を支持するとともに、該Ｕ字形の板バネ部材を撓ませて水準器ケースを傾動せし めるように構成する。ただし、本考案においてＵ字状とは、機構学的にＵ字状板 バネと等価な構成部分の総てを含み、例えばコの字状も含まれる。 上記の原理に基づく具体的構成として本考案に係る前照灯用光軸調整装置は、 ランプハウジング内にリフレクタが傾動可能に支承され、該リフレクタの光軸方 向を上下に調節する手段を具備しており、かつ、上記リフレクタの後方にブラケ ットが固定されていて該ブラケットによって支持された水準器が、前記ランプハ ウジングに設けられた水準器のぞき窓の付近に位置している自動車用前照灯の光 軸調整装置において、 断面Ｕ字状の板バネ部材が設けられるとともに、上記Ｕ字状の平行２辺の片方 の辺に相当する部分が水準器のケースに対して一体的に固着され、かつ、上記平 行２辺の他方に相当する部分の端部が前記のブラケットに取り付けられており、 さらに、上記Ｕ字状板バネを撓ませて水準器ケースを傾動せしめる構造の調整ネ ジが設けられていることを特徴とする。ただし前記ののぞき窓とは、ランプハウ ジングの外側から水準器を目視し得るように構成された部分の総称である。 The basic principle of the present invention, which was created to achieve the above object, will be briefly described. The U-shaped plate spring-like member integrally formed with the level case supports the case and the U-shaped case. The level spring case is bent so that the level case can be tilted. However, in the present invention, the U-shape includes all the structural parts that are mechanically equivalent to a U-shaped leaf spring, and also includes, for example, a U-shape. As a specific configuration based on the above principle, an optical axis adjusting device for a headlight according to the present invention comprises a means for tiltably supporting a reflector in a lamp housing, and means for vertically adjusting the optical axis direction of the reflector. In addition, the front of the vehicle, in which a bracket is fixed to the rear of the reflector and the level supported by the bracket is located near the level window of the level provided in the lamp housing. In the optical axis adjusting device of the lamp, a leaf spring member having a U-shaped cross section is provided, and a portion corresponding to one of the two parallel sides of the U-shape is integrally fixed to the level case. In addition, the end of the portion corresponding to the other of the two sides of the horizontal direction is attached to the bracket, and the U-shaped leaf spring is flexed to tilt the level case. Characterized in that screws are provided. However, the above-mentioned sight glass is a general term for the part configured so that the electronic level can be viewed from the outside of the lamp housing.
【０００６】[0006]
上記の構成によれば、水準器ケースと一体的に固着されたＵ字状の板バネ部材 によって該水準器ケースが支承され、かつ、該Ｕ字状の板バネ部材を調整ネジで 撓ませると（若しくは撓みを開放すると）水準器ケースが傾動する。このように して、水準器ケースと一体化されたＵ字状の板バネ部材が該水準器の支持機能と 調整機能とを併せ持つので、構成部品点数が少なくて構造が簡単である。従って 製造コストか安価である。 According to the above structure, the level case is supported by the U-shaped plate spring member integrally fixed to the level case, and the U-shaped plate spring member is bent by the adjusting screw. (Or when the flexure is released) The spirit level case tilts. In this way, since the U-shaped leaf spring member integrated with the level case has both the supporting function and the adjusting function of the level, the number of constituent parts is small and the structure is simple. Therefore, the manufacturing cost is low.
【０００７】[0007]
図１（Ａ）は本考案に係る前照灯用光軸調整装置の１実施例を示す断面図であ る。この実施例は先に図４について説明した従来例に本考案を適用して改良した ものであって、図４におけると同一の図面参照符号にダッシを付して示したラン プハウジング１′，リフレクタ２′，および水準器３′は、それぞれ上記従来例 における構成部材に対応する類似の構成部材である。 図１（Ａ）に示した実施例の要部分解斜視図を図２に示し、次に図１，図２を 参照しつつその構成を説明する。水準器３′のケース３ｂに対して板バネ部材３ ｃが、弾力性を有する合成樹脂材料によって一体に射出成形されている。そして 、上記のケース３ｂの底面に対して板バネ３ｃがほぼ平行をなし、両者がＵ字状 に連結されている。本考案を実施する場合、このＵ字状とはコの字状であっても よく、Ｖ字形に近いものであっても良い。また、本考案において板バネ部材の片 方の辺が水準器のケースに対して一体的に固着されるとは、本例のように一体成 形しても良く、別体に構成した板バネをケースに固定しても良い。要は、構成さ れた結果の部材が一体的に連結され、ケースを板バネで支持し得る構造であれば 良い。 上記板バネ部材３ｃの先端に係合突起３ｄが一体成形されている。一方、これ に対応してリフレクタ２′の背面に設けられているブラケット２ａに、上記係合 突起３ｄと係合する係合孔２ａが設けられていて、この係合孔２ａに前記係合突 起３ｄが係合されている。これにより板バネ部材３ｃの先端（詳しくは自由端） がリフレクタのブラケット２ａに対して固定的に係着され、水準器のケース３ｂ はリフレクタ２′に対して板バネ部材３ｃを介して傾動可能に支承される。 前記水準器のケース３ｂと、板バネ部材３ｃの自由端との間に、両者の間隔を 加減し得るように調整ネジ１１を設ける。この調整ネジ１１を回すと前記の板バ ネ部材３ｃの撓み量が変化して水準器ケース３ｂが傾動せしめられ、これに伴っ て水準器３′の本体（液入りガラス管）が傾動せしめられる。上記の傾動によっ て生じる気泡３ａの移動を目視し得るように、ランプハウジング１′にはのぞき 窓用の開口１ｂ（図１（Ａ）参照）が設けられ、のぞき窓用の透明蓋１２が着脱 可能に取り付けられている。気泡３ａの位置を見るだけの場合は透明蓋１２の上 から見ることができ、調整ネジ１１を回す場合には上記の透明蓋１２を取り外し て調整ネジ１１を回した後、該透明蓋１２を元のように装着して開口１ｂを水密 に覆っておく。図１に示した１３は、上記透明蓋１２とランプハウジング開口１ ｂとの間をシールしているＯリングである。 FIG. 1A is a sectional view showing an embodiment of an optical axis adjusting device for a headlight according to the present invention. This embodiment is an improvement in which the present invention is applied to the conventional example described with reference to FIG. 4, and the same reference numeral as that in FIG. The reflector 2'and the level 3'are similar components corresponding to the components in the above-mentioned conventional example. FIG. 2 shows an exploded perspective view of the essential parts of the embodiment shown in FIG. 1A, and the structure thereof will be described with reference to FIGS. The leaf spring member 3c is integrally injection-molded with the case 3b of the spirit level 3'by a synthetic resin material having elasticity. The leaf spring 3c is substantially parallel to the bottom surface of the case 3b, and both are connected in a U shape. When the present invention is implemented, the U-shape may be a U-shape or a V-shape. Further, in the present invention, the fact that one side of the leaf spring member is integrally fixed to the case of the spirit level means that the leaf spring member may be integrally formed as in this example, or the leaf spring is constructed separately. May be fixed to the case. The point is that the resulting members are integrally connected and the case can be supported by a leaf spring. An engaging projection 3d is integrally formed on the tip of the leaf spring member 3c. On the other hand, correspondingly, the bracket 2a provided on the rear surface of the reflector 2'is provided with an engaging hole 2a for engaging with the engaging protrusion 3d, and the engaging hole 2a is provided with the engaging protrusion 2a. The origin 3d is engaged. As a result, the tip (specifically, the free end) of the leaf spring member 3c is fixedly attached to the reflector bracket 2a, and the level case 3b can be tilted with respect to the reflector 2'via the leaf spring member 3c. Supported by. An adjusting screw 11 is provided between the case 3b of the electronic level and the free end of the leaf spring member 3c so that the distance between the two can be adjusted. When the adjusting screw 11 is turned, the bending amount of the plate panel member 3c is changed and the level case 3b is tilted, and the main body of the level 3 '(glass tube with liquid) is tilted accordingly. .. The lamp housing 1'is provided with a peep window opening 1b (see FIG. 1A) so that the movement of the bubbles 3a caused by the tilting can be visually observed, and a transparent lid 12 for the peep window is provided. It is detachably attached. When only looking at the position of the bubble 3a, it can be seen from above the transparent lid 12. When turning the adjusting screw 11, after removing the transparent lid 12 and turning the adjusting screw 11, the transparent lid 12 is turned on. Attach it as before and cover the opening 1b in a watertight manner. Reference numeral 13 shown in FIG. 1 is an O-ring that seals between the transparent lid 12 and the lamp housing opening 1b.
【０００８】 図１（Ｂ）は前記と異なる実施例を示す。この（Ｂ）図の実施例が前記実施例 と異なるところは、Ｕ字状をなしている板バネ部材３ｃとケース３ｂの底面との 間に、該Ｕ字状の内側にバネ鋼製のＵ字形板バネ１４を挟みつけて装着したこと である。このように構成するとバネ鋼製のＵ字形板バネ１４が合成樹脂製の板バ ネ部材３ｃのＵ字形を押し開く方向に付勢し、該板バネ部材３ｃの見かけのバネ 定数を増加させる。このため調整ネジ１１に掛かるテンションが大きくなり、水 準器ケース３ｂの調整済み状態の維持が確実になる。 図３（Ａ）は、さらに異なる実施例の要部を描いた斜視図である。１５は水準 器を示し、１５ａは気泡、１５ｂは弾性を有する合成樹脂で成形されたケースで ある。上記ケース１５ｂと一体に、その底壁を共有してＵ字形をなす形の板バネ 部材１５ｃが一体に成形されている。上記板バネ部材１５ｃがケース１５ｂと連 設されている部分１５ｃ1の反対側の端（自由端）に、取付孔１５ｅを有する取 付ブラケット１５ｄが一体に連設して成形されている。この取付孔１５ｅに取付 ネジ１６を挿通して、上記の取付ブラケット１５ｄを図外のリフレクタに固着す ると、水準器１５のケース１５ｂは該リフレクタに対して板バネ部材１５ｃを介 し弾性的に支承された状態となる。上記のケース１５ｂと板バネ部材１５ｃとの 間に、Ｕ字形の開口部に掛け渡した形に調整ネジ１７を配設する。この調整ネジ １７は前記実施例（図１，図２）における調整ネジ１１に対応する類似の構成部 材である。この調整ネジ１７を捩じこみ若しくは捩じ戻すと、板バネ部材１５ｃ の撓み状態が変化して水準器ケース１５ｂが傾動せしめられる。 上記のようにケース１５ｂを傾動させて光軸方向を調節した後、その調節状態 を保持するため、前記の水準器ケース１５ｂに固定用ブラケット１５ｆが一体成 形されるとともに、該固定用ブラケット１５ｆに長孔１５ｇが設けられている。 前記調整ネジ１７による調整を終えた後、上記の長孔１５ｇに固定用ネジ１８を 挿通して図外のリフレクタに対して固定用ブラケット１５ｆを固定すると、調整 済みの状態が安定して維持され、温度変化を受けたり振動を受けたりしても調整 状態が変わらない。 上記の固定用ネジ１８を締めつける際、該固定用ネジ１８と固定用ブラケット １５ｆとの間に働く摩擦力のために該固定用ブラケット１５ｆが捩り力を受けて 水準器ケース１５ｂの姿勢を狂わせるおそれが有る。これを防止するため、前記 の長孔１５ｇの平行な２辺の内の片方に段差１５ｇ1を設けてある。この部分の Ｂ−Ｂ断面拡大図を図３（Ｂ）に示す。このような段差を設けておくと、長孔１ ５ｇの平行な２辺の内の一方だけしか摩擦力を受けないので、該摩擦力による回 転モーメントが発生しない。このため、固定用ネジ１８の締めつけによって水準 器ケース１５ｂが捩り力を受けるおそれが無く、固定用ブラケット１５ｆが固定 用ネジ１８により圧接固定されて、水準器ケース１５ｂが調整ネジ１７によって 調整された正しい姿勢がそのままで固定される。FIG. 1B shows an embodiment different from the above. The difference between the embodiment shown in FIG. 7B and the above-mentioned embodiment is that a U-shaped U-shaped spring steel is provided between the leaf spring member 3c and the bottom surface of the case 3b. That is, the character-shaped leaf spring 14 was sandwiched and attached. With this structure, the U-shaped plate spring 14 made of spring steel urges the U-shape of the synthetic resin plate panel member 3c in a direction to push it open, thereby increasing the apparent spring constant of the plate spring member 3c. Therefore, the tension applied to the adjusting screw 11 is increased, and the adjusted state of the water level case 3b is reliably maintained. FIG. 3A is a perspective view showing a main part of still another embodiment. Reference numeral 15 indicates a level, 15a is a bubble, and 15b is a case made of elastic synthetic resin. A U-shaped leaf spring member 15c is formed integrally with the case 15b so as to share the bottom wall thereof. A mounting bracket 15d having a mounting hole 15e is integrally formed at the opposite end (free end) of the portion 15c 1 where the leaf spring member 15c is connected to the case 15b. When the mounting screw 16 is inserted into the mounting hole 15e and the mounting bracket 15d is fixed to a reflector (not shown), the case 15b of the electronic level 15 is elastically attached to the reflector through a leaf spring member 15c. Will be in a state of being supported by. An adjusting screw 17 is arranged between the case 15b and the leaf spring member 15c so as to extend over the U-shaped opening. The adjusting screw 17 is a similar component corresponding to the adjusting screw 11 in the above-described embodiment (FIGS. 1 and 2). When the adjusting screw 17 is screwed in or unscrewed, the bending state of the leaf spring member 15c changes and the level case 15b is tilted. After the case 15b is tilted as described above to adjust the optical axis direction, in order to maintain the adjusted state, the level bracket case 15b is integrally formed with the fixing bracket 15f and the fixing bracket 15f. An elongated hole 15g is provided in the. After the adjustment screw 17 has been adjusted, the fixing screw 18 is inserted into the elongated hole 15g and the fixing bracket 15f is fixed to the reflector (not shown), so that the adjusted state is stably maintained. , The adjustment status does not change even if it is subject to temperature changes or vibration. When the fixing screw 18 is tightened, the fixing bracket 15f may receive a twisting force due to a frictional force acting between the fixing screw 18 and the fixing bracket 15f, and the attitude of the level case 15b may be changed. There is. In order to prevent this, a step 15g 1 is provided on one of the two parallel sides of the elongated hole 15g. FIG. 3 (B) is an enlarged view of a cross section taken along the line BB of this portion. When such a step is provided, only one of the two parallel sides of the long hole 15g receives the frictional force, so that the rotation moment due to the frictional force does not occur. Therefore, there is no fear that the level case 15b will be twisted by tightening the fixing screw 18, and the fixing bracket 15f is pressed and fixed by the fixing screw 18, and the level case 15b is adjusted by the adjusting screw 17. The correct posture is fixed as it is.
【０００９】[0009]
以上に実施例を挙げて説明したように、本考案に係る前照灯用光軸調整装置に よれば、別段の特殊工具を必要とすることなく容易に光軸の調整状態を再現し得 るという水準器式調整装置の長所を損なうことなく構成部品点数を減少せしめ、 製造コストの低減を図ることができる。 As described above with reference to the embodiments, the optical axis adjusting device for a headlight according to the present invention can easily reproduce the optical axis adjusting state without the need for a special tool. It is possible to reduce the number of components without lowering the advantage of the electronic level adjusting device and to reduce the manufacturing cost.
【図１】（Ａ）は本考案に係る前照灯用光軸調整装置の
１実施例の断面図、（Ｂ）は上記と異なる実施例の要部
断面図である。FIG. 1A is a sectional view of an embodiment of an optical axis adjusting device for a headlight according to the present invention, and FIG. 1B is a sectional view of essential parts of an embodiment different from the above.
【図２】前掲の図１（Ａ）に示した実施例の要部分解斜
視図である。FIG. 2 is an exploded perspective view of essential parts of the embodiment shown in FIG. 1 (A) described above.
【図３】前記２つの実施例とさらに異なる実施例を示
し、（Ａ）は要部斜視図、（Ｂ）はそのＢ−Ｂ断面図で
ある。3A and 3B show an embodiment different from the above two embodiments, FIG. 3A is a perspective view of a main part, and FIG.
【図４】光軸調整装置の従来例を示す側面断面図であ
る。FIG. 4 is a side sectional view showing a conventional example of an optical axis adjusting device.
【図５】上記従来例の部分破断平面図である。FIG. 5 is a partially cutaway plan view of the conventional example.
１，１′…ランプハウジング、２，２′…リフレクタ、
２ａ…ブラケット、２ｂ…係合孔、３，３′…水準器、
３ａ…気泡、３ｂ…ケース、３ｃ…板バネ部材、３ｄ…
係合突起、１５…水準器、１５ｂ…ケース、１５ｃ…板
バネ部材、１５ｄ…取付ブラケット、１５ｅ…取付ネジ
孔、１５ｆ…固定用ブラケット、１５ｇ…長孔、１５ｇ
1，１６…取付ネジ、１７…調整ネジ、１８…固定用ネ
ジ。1, 1 '... Lamp housing, 2, 2' ... Reflector,
2a ... Bracket, 2b ... Engagement hole, 3, 3 '... Level,
3a ... Bubbles, 3b ... Case, 3c ... Leaf spring member, 3d ...
Engagement protrusion, 15 ... Level, 15b ... Case, 15c ... Leaf spring member, 15d ... Mounting bracket, 15e ... Mounting screw hole, 15f ... Fixing bracket, 15g ... Long hole, 15g
1 , 16 ... Mounting screw, 17 ... Adjusting screw, 18 ... Fixing screw.
Claims (1)
可能に支承され、該リフレクタの光軸方向を上下に調節
する手段を具備しており、かつ、上記リフレクタの後方
にブラケットが固定されていて該ブラケットによって支
持された水準器が、前記ランプハウジングに設けられた
水準器のぞき窓の付近に位置している自動車用前照灯の
光軸調整装置において、 断面Ｕ字状の板バネ部材が設けられるとともに、上記Ｕ
字状の平行２辺の片方の辺に相当する部分が水準器のケ
ースに対して一体的に固着され、かつ、上記平行２辺の
他方に相当する部分の端部が前記のブラケットに取り付
けられており、さらに、上記Ｕ字状板バネを撓ませて水
準器ケースを傾動せしめる構造の調整ネジが設けられて
いることを特徴とする、前照灯用光軸調整装置。1. A reflector is tiltably supported in a lamp housing, and means for vertically adjusting the optical axis direction of the reflector is provided, and a bracket is fixed to the rear of the reflector. In the optical axis adjusting device for a vehicle headlamp, wherein the level supported by is located near the leveling window of the level provided in the lamp housing, and a leaf spring member having a U-shaped cross section is provided. , Above U
A portion corresponding to one of the two parallel sides of the character is integrally fixed to the case of the spirit level, and an end portion of the portion corresponding to the other of the two parallel sides is attached to the bracket. An optical axis adjusting device for a headlight, further comprising: an adjusting screw having a structure for bending the U-shaped leaf spring to tilt the level case.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP466492U JP2553830Y2 (en) | 1991-11-21 | 1992-02-07 | Optical axis adjustment device for headlight |
| US08/039,441 US5500790A (en) | 1991-11-21 | 1992-11-20 | Device for confirming optical-axis adjustment of automotive headlamp |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9561991 | 1991-11-21 | ||
| JP3-95619 | 1991-11-21 | ||
| JP466492U JP2553830Y2 (en) | 1991-11-21 | 1992-02-07 | Optical axis adjustment device for headlight |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0559701U true JPH0559701U (en) | 1993-08-06 |
| JP2553830Y2 JP2553830Y2 (en) | 1997-11-12 |
Family
ID=26338470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP466492U Expired - Lifetime JP2553830Y2 (en) | 1991-11-21 | 1992-02-07 | Optical axis adjustment device for headlight |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2553830Y2 (en) |
-
1992
- 1992-02-07 JP JP466492U patent/JP2553830Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2553830Y2 (en) | 1997-11-12 |
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