JP6192218B2 - Vehicle lighting - Google Patents

Vehicle lighting Download PDF

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Publication number
JP6192218B2
JP6192218B2 JP2013211718A JP2013211718A JP6192218B2 JP 6192218 B2 JP6192218 B2 JP 6192218B2 JP 2013211718 A JP2013211718 A JP 2013211718A JP 2013211718 A JP2013211718 A JP 2013211718A JP 6192218 B2 JP6192218 B2 JP 6192218B2
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lamp
front cover
lamp body
vehicular lamp
pair
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JP2015074332A (en
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洋幸 原田
洋幸 原田
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Koito Manufacturing Co Ltd
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Koito Manufacturing Co Ltd
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Priority to JP2013211718A priority Critical patent/JP6192218B2/en
Priority to PCT/JP2014/075784 priority patent/WO2015053107A1/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
    • B60Q1/0408—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 built into the vehicle body, e.g. details concerning the mounting of the headlamps on the vehicle body
    • B60Q1/045—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 built into the vehicle body, e.g. details concerning the mounting of the headlamps on the vehicle body with provision for adjusting the alignment of the headlamp housing with respect to the vehicle body
    • 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
    • B60Q1/0408—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 built into the vehicle body, e.g. details concerning the mounting of the headlamps on the vehicle body
    • B60Q1/0425—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 built into the vehicle body, e.g. details concerning the mounting of the headlamps on the vehicle body the housing being swivel mounted on the vehicle body
    • 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
    • B60Q1/0408—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 built into the vehicle body, e.g. details concerning the mounting of the headlamps on the vehicle body
    • B60Q1/0433—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 built into the vehicle body, e.g. details concerning the mounting of the headlamps on the vehicle body the housing being fastened onto the vehicle body using screws
    • 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
    • B60Q1/0408—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 built into the vehicle body, e.g. details concerning the mounting of the headlamps on the vehicle body
    • B60Q1/0441—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 built into the vehicle body, e.g. details concerning the mounting of the headlamps on the vehicle body the housing being fastened onto the vehicle body using means other than screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J6/00—Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
    • B62J6/02—Headlights
    • B62J6/022—Headlights specially adapted for motorcycles or the like
    • B62J6/026—Headlights specially adapted for motorcycles or the like characterised by the structure, e.g. casings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J6/00—Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
    • B62J6/02—Headlights
    • B62J6/022—Headlights specially adapted for motorcycles or the like
    • B62J6/027—Supporting means therefor, e.g. mounting brackets

Description

車両の走行時における光軸の振動を低減させた車両用灯具の発明。   An invention of a vehicular lamp that reduces vibration of an optical axis during traveling of the vehicle.

特許文献１には、ケース（ランプボディ）とケースの前方に取り付けられたレンズ（前面レンズ）の内側に光源となるバルブを配置した、車両（自動二輪車用）のヘッドライトユニットが図４や明細書の［００２６］等に記載されている。   Patent Document 1 discloses a headlight unit for a vehicle (for a motorcycle) in which a bulb serving as a light source is arranged inside a case (lamp body) and a lens (front lens) attached in front of the case as shown in FIG. [0026] and the like.

特許文献１のヘッドライトユニットは、ケースに設けられた左右一対の支持軸によって車体のフロントカバーに回転自在に取り付けられる。   The headlight unit of Patent Document 1 is rotatably attached to the front cover of the vehicle body by a pair of left and right support shafts provided on the case.

特開２００７−１１８８７０号公報JP 2007-118870 A

特許文献１のヘッドライトユニットの回転中心となる一対の支持軸は、ヘッドライトユニットの後端部近傍に位置するケースに設けられているため、ヘッドライトユニットの重心は、支持軸から前方に離れた位置に発生する。従って、特許文献１のヘッドライトユニットは、走行時の振動によって支持軸周りに発生する回転モーメントが大きくなりやすいため、光軸が振動しやすくなる問題を有する。   Since the pair of support shafts serving as the center of rotation of the headlight unit of Patent Document 1 is provided in a case located near the rear end of the headlight unit, the center of gravity of the headlight unit is separated forward from the support shaft. Occurs at the position. Therefore, the headlight unit of Patent Document 1 has a problem that the optical axis is likely to vibrate because the rotational moment generated around the support shaft is likely to increase due to vibration during traveling.

本願発明は、上記課題に鑑みて、車両の走行時において光軸の振動を低減させた車両用灯具を提供するものである。   In view of the above problems, the present invention provides a vehicular lamp that reduces vibration of the optical axis during vehicle travel.

前記課題を解決するために、請求項１の車両用灯具は、光源と、ランプボディと、ランプボディに取り付けられてランプボディと共に灯具本体を形成する前面カバーと、灯具本体の左右両端部にそれぞれ設けられ、車両に回動可能に支持される一対の回動軸と、を有する車両用灯具において、前記一対の回動軸が、前面カバーに設けられるようにした。   In order to solve the above-mentioned problems, a vehicular lamp according to claim 1 includes a light source, a lamp body, a front cover attached to the lamp body and forming the lamp body together with the lamp body, and left and right ends of the lamp body. In the vehicular lamp having a pair of rotation shafts provided and rotatably supported by the vehicle, the pair of rotation shafts are provided on the front cover.

（作用）車両用灯具の回動軸がより重心に近い位置に設けられるため、車両用灯具の回動軸周りに発生する回転モーメントは、より小さくなる。その結果、車両用灯具は、走行時の振動を受けても回転しにくくなる。   (Operation) Since the rotation axis of the vehicle lamp is provided at a position closer to the center of gravity, the rotational moment generated around the rotation axis of the vehicle lamp is smaller. As a result, the vehicular lamp is less likely to rotate even when subjected to vibration during traveling.

請求項２は、請求項１に記載の車両用灯具であって、前記一対の回動軸を前面カバーに一体成形した。   A second aspect of the present invention is the vehicle lamp according to the first aspect, wherein the pair of rotating shafts are integrally formed with the front cover.

（作用）前面カバーに支持軸を別途設ける必要が無くなるため、部品点数が減少し、車両用灯具の構造が簡素になる。   (Operation) Since there is no need to separately provide a support shaft on the front cover, the number of parts is reduced and the structure of the vehicular lamp is simplified.

請求項３は、請求項１または２に記載の車両用灯具であって、前記前面カバーは、シール部を介して前記ランプボディに取り付けられ、前記一対の回動軸は、シール部の前方に設けられるようにした。   A third aspect of the present invention provides the vehicular lamp according to the first or second aspect, wherein the front cover is attached to the lamp body via a seal portion, and the pair of rotation shafts are disposed in front of the seal portion. It was set up.

（作用）一対の回動軸が、前面カバーをランプボディに取り付けるシール部に干渉しない。   (Operation) The pair of rotating shafts do not interfere with the seal portion for attaching the front cover to the lamp body.

請求項４は、請求項１から３のうちいずれかに記載の車両用灯具であって、前記前面カバーが、前方に向かって凸となる湾曲形状を有するようにした。   A fourth aspect of the present invention is the vehicular lamp according to any one of the first to third aspects, wherein the front cover has a curved shape that protrudes forward.

前面カバーが、前方に向かって凸となる湾曲形状を有するため、車両用灯具の重心は、より前方に発生する。   Since the front cover has a curved shape that protrudes forward, the center of gravity of the vehicular lamp is generated further forward.

（作用）しかし、一対の回動軸もまた、より重心近くに設けられるため、車両用灯具の回動軸周りに発生する回転モーメントは、より小さくなる。その結果、車両用灯具は、走行時の振動を受けても回転しにくくなる。   (Operation) However, since the pair of rotating shafts are also provided closer to the center of gravity, the rotational moment generated around the rotating shaft of the vehicular lamp is smaller. As a result, the vehicular lamp is less likely to rotate even when subjected to vibration during traveling.

請求項５は、請求項１から４のうちいずれかに記載の車両用灯具であって、前記ランプボディが、底部の左右方向の中央位置に光軸調整機構を有するようにした。   A fifth aspect of the present invention is the vehicular lamp according to any one of the first to fourth aspects, wherein the lamp body has an optical axis adjusting mechanism at a center position in the left-right direction of the bottom portion.

（作用）車両用灯具の光軸の方向が光軸調整機構によって変化する。   (Operation) The direction of the optical axis of the vehicular lamp is changed by the optical axis adjusting mechanism.

請求項１の車両用灯具によれば、車両用灯具が走行時の振動によって回転しにくくなるため、光軸が振動しにくい車両用灯具を得られる。   According to the vehicular lamp of the first aspect, since the vehicular lamp is less likely to rotate due to vibration during traveling, the vehicular lamp is less likely to vibrate the optical axis.

請求項２の車両用灯具によれば、構造が簡素で、光軸が振動しにくい車両用灯具を得られる。   According to the vehicular lamp of the second aspect, a vehicular lamp having a simple structure and a hard optical axis can be obtained.

請求項３の車両用灯具用によれば、一対の回動軸がシール部に干渉しないため、シール部を介して前面カバーをランプボディに取り付けやすくなる。   According to the vehicle lamp of the third aspect, since the pair of rotating shafts do not interfere with the seal portion, the front cover can be easily attached to the lamp body via the seal portion.

請求項４の車両用灯具によれば、車両用灯具の前寄りの位置に重心が発生しても、車両用灯具が走行時の振動によって回転しにくくなるため、光軸が振動しにくい車両用灯具を得られる。   According to the vehicle lamp of the fourth aspect, even if the center of gravity is generated at a position closer to the front of the vehicle lamp, the vehicle lamp is less likely to rotate due to vibration during travel, so that the optical axis is less likely to vibrate. A lamp can be obtained.

請求項５の車両用灯具によれば、光軸が所定の方向に向くよう調節される。   According to the vehicle lamp of the fifth aspect, the optical axis is adjusted so as to be directed in a predetermined direction.

実施例の車両用灯具を取り付けた自動二輪車のハンドル部分の正面図。The front view of the handle | steering-wheel part of the motorcycle which attached the vehicle lamp of the Example. 実施例の車両用灯具の正面図。The front view of the vehicle lamp of an Example. 実施例の車両用灯具の左側面図。The left view of the vehicle lamp of an Example. 実施例の車両用灯具の背面図。The rear view of the vehicle lamp of an Example. 実施例の車両用灯具の底面図。The bottom view of the vehicle lamp of an Example. 図４のＩ−Ｉ断面図。II sectional drawing of FIG. 図３の光軸調整機構を示す、図２のＩＩ−ＩＩ断面図。II-II sectional drawing of FIG. 2 which shows the optical axis adjustment mechanism of FIG.

実施例の車両用灯具１を図１から図８によって説明する。図１から図８においては、各図に示すように前面カバーとランプボディの相対的な配置方向を前後方向（符号Ｆｒ及びＲｅ方向）、灯具本体に設けられた一対の回動軸の突出方向を左右方向（符号Ｌｅ及びＲｉ方向）、スライド部と光軸調整部の相対的な配置方向を上下方向（符号Ｕｐ及びＬｏ方向）として説明する。   A vehicle lamp 1 according to an embodiment will be described with reference to FIGS. 1 to 8, the relative arrangement direction of the front cover and the lamp body is the front-rear direction (reference Fr and Re directions), and the protruding directions of the pair of rotating shafts provided in the lamp body are shown in each figure. Will be described as the left-right direction (reference Le and Ri directions), and the relative arrangement direction of the slide part and the optical axis adjustment part as the vertical direction (reference Up and Lo directions).

本実施例の車両用灯具は、スクーターを含む自動二輪車、３輪バギーを含む自動三輪車等の鞍乗型車両に好適な灯具である。実施例１の車両用灯具１は、自動二輪車（スクーター）用の前照灯であり、図１に示すように自動二輪車のハンドル１００に取り付けられている。ハンドル１００は、グリップ部（１０１ａ、１０１ｂ）を取り付けたフレーム１０２と、ハンドルカバー１０３と、を有する。車両用灯具１は、フレーム１０２によって上下に揺動自在に支持され、かつ前面カバー３を前方に露出させた状態でハンドルカバー１０３の内側に取り付けられる。   The vehicular lamp of the present embodiment is a lamp suitable for a straddle-type vehicle such as a motorcycle including a scooter and a tricycle including a three-wheel buggy. The vehicular lamp 1 according to the first embodiment is a headlamp for a motorcycle (scooter), and is attached to a handle 100 of the motorcycle as shown in FIG. The handle 100 includes a frame 102 to which grip portions (101a, 101b) are attached, and a handle cover 103. The vehicular lamp 1 is supported by a frame 102 so as to be swingable up and down, and is attached to the inside of the handle cover 103 with the front cover 3 exposed forward.

図２から図６に示す、車両用灯具１は、樹脂製のランプボディ２及び前面カバー３を有する灯具本体４と、光源となるバルブ５と、灯具本体４の左右両端部に設けられる一対の同軸（中心軸線Ｌ１）の回動軸（６，７）と、を有する。図３，図５、図６に示すように前面カバー３は、透明または半透明の樹脂等で形成され、上下方向または左右方向のいずれから見ても前方に向かって凸となる湾曲形状を有する。また、ランプボディ２は、後方に向かって凸となる回転放物面形状を有するリフレクター８と、リフレクター８の左右の両端部から後方に伸びるエクステンションリフレクター９によって構成されて、前面カバー３を後方から閉塞する。リフレクター８及びエクステンションリフレクター９は、ポリプロピレン（ＰＰ）やポリカーボネート（ＰＣ）等の材質で形成され、前面カバー３は、ポリカーボネート（ＰＣ）やアクリル（ＰＭＭＡ）等の材質で形成される。前面カバー３及びエクステンションリフレクター９は、共に同一材料（ＰＣ）で形成されてもよい。   A vehicle lamp 1 shown in FIGS. 2 to 6 includes a lamp body 4 having a resin lamp body 2 and a front cover 3, a bulb 5 serving as a light source, and a pair of left and right ends of the lamp body 4. And a rotation axis (6, 7) that is coaxial (center axis L1). As shown in FIGS. 3, 5, and 6, the front cover 3 is formed of a transparent or translucent resin or the like, and has a curved shape that protrudes forward when viewed from either the vertical direction or the horizontal direction. . The lamp body 2 includes a reflector 8 having a paraboloidal shape that protrudes rearward, and an extension reflector 9 that extends rearward from the left and right ends of the reflector 8, and the front cover 3 extends from the rear. Block. The reflector 8 and the extension reflector 9 are made of a material such as polypropylene (PP) or polycarbonate (PC), and the front cover 3 is made of a material such as polycarbonate (PC) or acrylic (PMMA). Both the front cover 3 and the extension reflector 9 may be formed of the same material (PC).

前面カバー３の周縁部の後端には、シール脚３ａ（図６参照）と、後述する一対の回動軸（６，７）の台座（６ａ，７ａ）を除く部分にリブ３ｂ（図２及び図３参照）が周設される。また、エクステンションリフレクター９の周縁部の後端には、前方に開口するシール溝９ａが周設され、シール溝９ａの内側には、シール溝９ａに沿ってゴム等の弾性部材からなるシール部材９ｂが設けられる。シール脚３ａ、シール溝９ａ、シール部材９ｂは、前面カバー３とランプボディ２との間に設けられて、後述する灯室Ｓを封止するシール部１１を形成する。また、灯具本体４は、ランプボディ２に形成されたスリット１０ａと前面カバー３に形成された凸部１０ｂからなる複数の凹凸ランス機構１０を有する。   A rib 3b (see FIG. 2) is provided at the rear end of the peripheral edge of the front cover 3 except for a seal leg 3a (see FIG. 6) and a base (6a, 7a) of a pair of rotating shafts (6, 7) described later. And FIG. 3). Further, a seal groove 9a opening forward is provided at the rear end of the peripheral edge of the extension reflector 9, and a seal member 9b made of an elastic member such as rubber along the seal groove 9a is provided inside the seal groove 9a. Is provided. The seal leg 3a, the seal groove 9a, and the seal member 9b are provided between the front cover 3 and the lamp body 2, and form a seal portion 11 that seals the lamp chamber S described later. The lamp body 4 includes a plurality of concave and convex lance mechanisms 10 including slits 10 a formed in the lamp body 2 and convex portions 10 b formed in the front cover 3.

図２から図６に示すように、ランプボディ２と前面カバー３は、凹凸ランス機構１０とシール部１１を介して一体化されることによって灯具本体４を構成する。具体的には、前面カバー３は、シール脚３ａをエクステンションリフレクター９のシール溝９ａ内のシール部材９ｂに押し付けた状態で、前面カバー３の複数の凸部１０ｂをランプボディ２の対応するスリット１０ａに係合（凹凸ランス係合）させることにより、ランプボディ２に取り付けられる。   As shown in FIGS. 2 to 6, the lamp body 2 and the front cover 3 constitute a lamp body 4 by being integrated via an uneven lance mechanism 10 and a seal portion 11. Specifically, the front cover 3 has the plurality of convex portions 10b of the front cover 3 corresponding to the slits 10a of the lamp body 2 in a state where the seal leg 3a is pressed against the seal member 9b in the seal groove 9a of the extension reflector 9. The lamp body 2 is attached to the lamp body 2 by engaging with the projection (concave concavo-convex lance).

図６に示すように、前面カバー３とランプボディ２の（リフレクター８の）内側には、シール部材９ｂによって封止された灯室Ｓが形成され、ランプボディ２のリフレクター８の中央には、灯室Ｓ内に発光部５ａを突出させるようにしてバルブ５が取り付けられる。   As shown in FIG. 6, a lamp chamber S sealed by a seal member 9b is formed inside the front cover 3 and the lamp body 2 (of the reflector 8), and at the center of the reflector 8 of the lamp body 2, The bulb 5 is attached so that the light emitting portion 5a protrudes into the lamp chamber S.

また、図２から図６に示すように、灯具本体４には、左右方向にそれぞれ突出する一対の回動軸（６，７）が設けられる。一対の回動軸（６，７）は、車両用灯具１の重心がシール溝９ａよりも前寄りの位置に発生しているためランプボディ２ではなく前面カバー３の左右両端部に設けられる。特許文献１の図５に示されるヘッドライトユニット３０のようにケース３２に設けられた支持軸３６は、ヘッドライトユニット３０の重心の後方に配置されるため、車両走行中の振動の影響を受け、ヘッドライトユニット３０の自重による大きな負荷を受ける。本願実施例の一対の回動軸（６，７）は、前面カバー３に設けられることで車両用灯具１の重心近傍に設けられるため、一対の回動軸（６，７）に負荷がかかりにくい。   Further, as shown in FIGS. 2 to 6, the lamp body 4 is provided with a pair of rotating shafts (6, 7) protruding in the left-right direction. The pair of pivot shafts (6, 7) are provided not at the lamp body 2 but at the left and right ends of the front cover 3 because the center of gravity of the vehicular lamp 1 is generated at a position closer to the front than the seal groove 9a. The support shaft 36 provided in the case 32 like the headlight unit 30 shown in FIG. 5 of Patent Document 1 is disposed behind the center of gravity of the headlight unit 30, and thus is affected by vibration during vehicle travel. The headlight unit 30 receives a large load due to its own weight. Since the pair of rotating shafts (6, 7) of the embodiment of the present application is provided near the center of gravity of the vehicular lamp 1 by being provided on the front cover 3, a load is applied to the pair of rotating shafts (6, 7). Hateful.

図２から６に示すように、一対の回動軸（６，７）は、前面カバー３に左右に一体形成された中空の台座（６ａ，７ａ）と、台座（６ａ，７ａ）に一体化された軸部（６ｂ、７ｂ）によって形成される。台座（６ａ，７ａ）は、有底筒状に形成されて、軸部（６ｂ、７ｂ）の強度を向上させる。軸部（６ｂ、７ｂ）は、スペーサーを取り付ける半円筒形状の取付部（６ｃ，７ｃ）とその先端に一体形成された、中空の半円錐部（６ｄ、７ｄ）によって形成される。取付部（６ｃ，７ｃ）と半円錐部（６ｄ，７ｄ）の内側は、図４に示すように、仕切り（６ｅ，７ｅ）を間に挟んで後方に開口する中空形状を有する。   As shown in FIGS. 2 to 6, the pair of rotating shafts (6, 7) are integrated with the hollow base (6 a, 7 a) integrally formed on the front cover 3 on the left and right and the base (6 a, 7 a). It is formed by the shaft part (6b, 7b) made. The bases (6a, 7a) are formed in a bottomed cylindrical shape, and improve the strength of the shaft portions (6b, 7b). The shaft portion (6b, 7b) is formed by a semi-cylindrical mounting portion (6c, 7c) to which the spacer is attached and a hollow semi-conical portion (6d, 7d) integrally formed at the tip thereof. As shown in FIG. 4, the insides of the attachment portions (6c, 7c) and the semiconical portions (6d, 7d) have a hollow shape that opens rearward with the partitions (6e, 7e) interposed therebetween.

尚、特許文献１の図５に示すヘッドライトユニット３０において、支持軸３６に作用する大きな負荷は、ケース３２を介してケース３２とレンズ３４の接合部に設けられるシール部材に作用し、シール部材の密着性を低下させる。シール部材の密着性が低下すると、ヘッドライトユニット３０の内側には、水や塵が侵入するため、特許文献１のヘッドライトユニット３０には、大きな負荷を受けてもケース３２とレンズ３４との間に設けたシール部材の密着性が低下しないように高価な素材をシール部材に採用したり、シール部材を厚手にする必要があった。   In the headlight unit 30 shown in FIG. 5 of Patent Document 1, a large load acting on the support shaft 36 acts on a seal member provided at a joint portion between the case 32 and the lens 34 via the case 32, and the seal member. Reduces the adhesion. When the adhesion of the seal member is lowered, water and dust enter the inside of the headlight unit 30, so that the headlight unit 30 of Patent Document 1 has a case 32 and a lens 34 that are subjected to a large load. It is necessary to use an expensive material for the seal member or to make the seal member thick so that the adhesion of the seal member provided therebetween does not deteriorate.

本実施例の車両用灯具１においては、元々重心位置近傍に配置された回動軸（６，７）に負荷がかかりにくいことに加え、中心軸線Ｌ１に沿って左右に張り出した台座（６ａ，７ａ）の仕切り（６ｅ，７ｅ）に軸部（６ｂ，７ｂ）を設けることにより、回動軸（６，７）の強度も向上させている。また、シール溝９ａに直接自重の負荷がかかることがない。従って、ランプボディ２と前面カバー３との間に設けたシール部材９ｂの密着性が低下しにくいため、高価な素材をシール部材９ｂに採用する必要がない。また、シール部材９ｂを薄手にしてシール部のサイズを小さくすることもできる。   In the vehicular lamp 1 according to the present embodiment, in addition to being difficult to apply a load to the rotary shafts (6, 7) originally arranged in the vicinity of the center of gravity, the pedestal (6a, By providing the shaft portions (6b, 7b) in the partitions (6e, 7e) of 7a), the strength of the rotating shafts (6, 7) is also improved. Further, the self-weight is not directly applied to the seal groove 9a. Therefore, the adhesiveness of the seal member 9b provided between the lamp body 2 and the front cover 3 is unlikely to be lowered, so that an expensive material need not be used for the seal member 9b. Further, the seal member 9b can be thinned to reduce the size of the seal portion.

尚、図２の仮想線は、車両のフレーム１０２とスペーサー１２を示すものであり、当該部分のみ図３のＩＩＩ−ＩＩＩ位置で切断した断面として記載している。軸部（６ｂ、７ｂ）には、樹脂やゴム等で形成された円筒形状のスペーサー１２が取り付けられる。スペーサー１２の外周には、周方向溝１２ａが形成され、スペーサー１２は、車両のフレーム１０２に形成された軸取付部１０２ａの先端の円孔１０２ｂに周方向溝１２ａを係合させることでフレーム１０２に取り付けられる。車両用灯具１は、回動軸（６，７）の取付部（６ｃ、７ｃ）をスペーサー１２の円孔１２ｂにそれぞれ挿入することにより、車両側のフレーム１０２に回動自在に取り付けられる。車両用灯具１は、後述する光軸調整機構によって、回動軸（６，７）の中心軸線Ｌ１周りに揺動する。   The phantom lines in FIG. 2 indicate the vehicle frame 102 and the spacers 12, and only the relevant portions are shown as cross sections cut at the position III-III in FIG. A cylindrical spacer 12 made of resin, rubber or the like is attached to the shaft portions (6b, 7b). A circumferential groove 12 a is formed on the outer periphery of the spacer 12, and the spacer 12 is engaged with the circumferential groove 12 a in a circular hole 102 b at the tip of a shaft mounting portion 102 a formed in the frame 102 of the vehicle. Attached to. The vehicular lamp 1 is rotatably mounted on the vehicle-side frame 102 by inserting the mounting portions (6c, 7c) of the rotating shafts (6, 7) into the circular holes 12b of the spacer 12, respectively. The vehicular lamp 1 is swung around the central axis L1 of the rotation shafts (6, 7) by an optical axis adjusting mechanism described later.

尚、本実施例においては、前面カバー３に雄部となる回動軸（６，７）を設け、かつ車両側のフレーム１０２にスペーサー１２を介して回動軸（６，７）を係合させる雌部となる軸取付部１０２ａを設けているが、車両用灯具１においては、前面カバー３に雌部となる軸取付部を設け、フレーム１０２に雄部となる回動軸を設けてもよい。   In this embodiment, the front cover 3 is provided with a rotating shaft (6, 7) which is a male part, and the rotating shaft (6, 7) is engaged with the frame 102 on the vehicle side via a spacer 12. However, in the vehicular lamp 1, the front cover 3 may be provided with a shaft attaching portion serving as a female portion, and the frame 102 may be provided with a rotating shaft serving as a male portion. Good.

本実施例の車両用灯具１は、前面レンズが前方に大きく突出した湾曲形状を有するため、重心が車両用灯具１の前寄りの位置に発生しやすくなる。しかし、一対の回動軸（６，７）は、前面カバー３に設けられることによって重心に近い位置に設けられる。その結果、例えば、図３における車両用灯具１の重心が符号Ｇ１の位置に発生すると仮定した場合、Ｇ１から中心軸線Ｌ１までの前後方向距離ｄ１がより短くなるため、車両用灯具１の回動軸（６，７）の中心軸線Ｌ１周りに発生する回転モーメントは、より小さくなる。その結果、車両用灯具は、走行時の振動を受けても回転しにくくなる。   Since the vehicular lamp 1 of the present embodiment has a curved shape in which the front lens protrudes greatly forward, the center of gravity is likely to be generated at a position closer to the front of the vehicular lamp 1. However, the pair of rotation shafts (6, 7) is provided at a position close to the center of gravity by being provided on the front cover 3. As a result, for example, when it is assumed that the center of gravity of the vehicular lamp 1 in FIG. 3 is generated at the position indicated by reference numeral G1, the distance d1 in the front-rear direction from G1 to the central axis L1 becomes shorter. The rotational moment generated around the central axis L1 of the axes (6, 7) becomes smaller. As a result, the vehicular lamp is less likely to rotate even when subjected to vibration during traveling.

尚、回動軸（６，７）は、中心軸線Ｌ１が車両用灯具１の重心の鉛直上方または下方に位置するか、重心と一致する位置に配置されるように前面カバー３に形成されることが望ましい。   The pivot shafts (6, 7) are formed on the front cover 3 so that the center axis L1 is located vertically above or below the center of gravity of the vehicular lamp 1 or at a position coincident with the center of gravity. It is desirable.

例えば、図３における車両用灯具１の重心が符号Ｇ２またはＧ３のいずれかの位置に発生すると仮定した場合、回動軸（６，７）は、図３に示すように中心軸線Ｌ１がＧ２の鉛直下方またはＧ３の鉛直上方に位置するように回動軸（６，７）を前面カバー３に形成することが望ましい。その場合、重心Ｇ２またはＧ３において鉛直下方に作用する車両用灯具１の自重は、中心軸線Ｌ１周りの回転モーメントを車両用灯具１に発生させないため、車両用灯具１は、走行時に振動を受けても回転しにくくなる。   For example, when it is assumed that the center of gravity of the vehicular lamp 1 in FIG. 3 is generated at the position of either G2 or G3, the rotation shafts (6, 7) have a center axis L1 of G2 as shown in FIG. It is desirable to form the rotation shafts (6, 7) on the front cover 3 so as to be positioned vertically below or vertically above G3. In that case, the weight of the vehicular lamp 1 acting vertically downward at the center of gravity G2 or G3 does not cause the vehicular lamp 1 to generate a rotational moment around the central axis L1, so that the vehicular lamp 1 receives vibration during traveling. Also difficult to rotate.

また、例えば、図３における車両用灯具１の重心が符号Ｇ４に発生すると仮定した場合において、回動軸（６，７）の中心軸線Ｌ１を重心Ｇ４の発生位置に配置した場合、重心Ｇ４において鉛直下方に作用する車両用灯具１の自重は、例え車両が前後方向に振動したとしても、中心軸線Ｌ１周りの回転モーメントを車両用灯具１に発生させない点でより望ましい。その場合、車両用灯具１は、走行時に前後方向の振動を受けても回転しにくくなる。   Further, for example, when it is assumed that the center of gravity of the vehicular lamp 1 in FIG. 3 is generated at G4, when the center axis L1 of the rotation shafts (6, 7) is arranged at the position where the center of gravity G4 is generated, The self-weight of the vehicular lamp 1 acting vertically downward is more preferable in that a rotating moment around the central axis L1 is not generated in the vehicular lamp 1 even if the vehicle vibrates in the front-rear direction. In that case, the vehicular lamp 1 is difficult to rotate even if it receives vibration in the front-rear direction during traveling.

また、図３及び図５に示す通り、前面カバー３の一対の回動軸（６，７）は、シール部１１の前方に設けられているため、前面カバー３をランプボディ２に取り付ける際にシール部１１に干渉しない。   Further, as shown in FIGS. 3 and 5, the pair of pivot shafts (6, 7) of the front cover 3 are provided in front of the seal portion 11, and therefore when the front cover 3 is attached to the lamp body 2. It does not interfere with the seal part 11.

尚、図２から図４に示す通り、ランプボディ２の頂部１３の左右方向の中央位置には、上方に突出した後、後方に伸びる板状のスライド部１５が設けられる。   As shown in FIGS. 2 to 4, a plate-like slide portion 15 that protrudes upward and then extends rearward is provided at the center position in the left-right direction of the top portion 13 of the lamp body 2.

また、図２から図４に示すランプボディ２の底部１４の左右方向中央位置には、図７の光軸調整機構１６が設けられる。   Moreover, the optical axis adjusting mechanism 16 of FIG. 7 is provided in the center position of the bottom part 14 of the lamp body 2 shown in FIGS. 2 to 4 in the left-right direction.

図２から図４に示すスライド部１５は、車両のフレーム１０２に設けられた、スライド部１５の先端部１５ａに対応した形状のスリット（図示せず）に挿入されることでフレーム１０２に保持される。   The slide portion 15 shown in FIGS. 2 to 4 is held by the frame 102 by being inserted into a slit (not shown) having a shape corresponding to the distal end portion 15a of the slide portion 15 provided on the frame 102 of the vehicle. The

光軸調整機構１６は、前後に伸びる上端部１７と、上端部１７から斜め後方に伸びる傾斜部１８と、中央に雌ねじ孔１９ａを有するナットのような雌ねじ部形成部材１９と、ボルト２０によって構成される（尚、図２から図５には、ボルトを記載していない）。上端部１７には、傾斜部１８との連続部１８ａ近傍から下方に突出する第１凸部１７ａと、後端部から第１凸部１７ａよりも長く下方に突出す第２凸部１７ｂが設けられる。第２凸部１７ｂと、傾斜部１８との間には、雌ねじ部形成部材１９の挿入口１８ｂが形成される。   The optical axis adjusting mechanism 16 includes an upper end portion 17 extending in the front-rear direction, an inclined portion 18 extending obliquely rearward from the upper end portion 17, an internal thread portion forming member 19 such as a nut having an internal thread hole 19a in the center, and a bolt 20. (The bolts are not shown in FIGS. 2 to 5). The upper end portion 17 is provided with a first convex portion 17a that protrudes downward from the vicinity of the continuous portion 18a with the inclined portion 18, and a second convex portion 17b that protrudes downward from the rear end portion longer than the first convex portion 17a. It is done. An insertion port 18 b of the female screw portion forming member 19 is formed between the second convex portion 17 b and the inclined portion 18.

図７に示すように、雌ねじ部形成部材１９は、挿入口１８ｂから傾斜部１８の上面１８ｃに沿って第１凸部１７ａと第２凸部１７ｂの双方に接触するまで挿入され、傾斜部１８へ接着されること等によって固定される。雌ねじ部形成部材１９の雌ねじ孔１９ａは、図５に示すように、傾斜部１８に設けられた孔１８ｄに対応した位置に配置される。尚、図７に示すように、傾斜部１８は、固定された雌ねじ部形成部材１９の雌ねじ孔１９ａの中心軸線Ｌ２が、回動軸（６，７）の中心軸線Ｌ１の後方に向かって斜め上方に傾斜するように形成される。   As shown in FIG. 7, the female thread portion forming member 19 is inserted from the insertion port 18b along the upper surface 18c of the inclined portion 18 until it contacts both the first convex portion 17a and the second convex portion 17b. It is fixed by being glued to the surface. As shown in FIG. 5, the female screw hole 19 a of the female screw part forming member 19 is disposed at a position corresponding to the hole 18 d provided in the inclined part 18. As shown in FIG. 7, the inclined portion 18 is formed so that the central axis L2 of the female screw hole 19a of the fixed female screw portion forming member 19 is inclined toward the rear of the central axis L1 of the rotating shaft (6, 7). It is formed so as to incline upward.

図７に示すように、ボルト２０は、雄ねじ部を形成していない軸の基端部２０ａをフレーム１０２側の挿通孔１０２ｃに挿入されることにより、挿通孔１０２ｃから抜け止めされつつフレーム１０２に回動可能に保持される。ボルト２０の雄ねじ部２０ｂは、傾斜部１８の孔１８ｄを介して雌ねじ部形成部材１９の雌ねじ孔１９ａにネジ止めされる。ボルト２０をＤ１方向に正回転させ、またはＤ２方向に逆回転させると、車両用灯具１の下端部は、雌ねじ部形成部材１９と共にフレーム１０２に対し、雌ねじ孔１９ａの中心軸線Ｌ２に沿ってＤ３方向に移動し、またはＤ４方向に移動する。その結果、車両用灯具１は、ボルト２０の回転方向に応じて回動軸（６，７）の中心軸線Ｌ１を中心としてＤ５方向またはＤ６方向のいずれかに揺動し、光軸の上下方向が微調整される。   As shown in FIG. 7, the bolt 20 is inserted into the insertion hole 102c on the frame 102 side by inserting the base end portion 20a of the shaft that does not form the male screw portion into the frame 102 while being prevented from coming off from the insertion hole 102c. It is held rotatably. The male screw portion 20 b of the bolt 20 is screwed into the female screw hole 19 a of the female screw portion forming member 19 through the hole 18 d of the inclined portion 18. When the bolt 20 is rotated forward in the D1 direction or reversely rotated in the D2 direction, the lower end portion of the vehicular lamp 1 is D3 along the central axis L2 of the female screw hole 19a with respect to the frame 102 together with the female screw portion forming member 19. Move in the direction, or move in the D4 direction. As a result, the vehicular lamp 1 swings in either the D5 direction or the D6 direction around the central axis L1 of the rotation shaft (6, 7) according to the rotation direction of the bolt 20, and the vertical direction of the optical axis Is fine-tuned.

１ 車両用灯具
２ ランプボディ
３ 前面カバー
４ 前照灯本体
５ バルブ（光源）
６，７ 一対の回動軸
１１ シール部
１４ ランプボディの底部
１６ 光軸調整機構
Ｆｒ 前方
Ｌｅ 左方
Ｒｉ 右方 DESCRIPTION OF SYMBOLS 1 Vehicle lamp 2 Lamp body 3 Front cover 4 Headlamp body 5 Bulb (light source)
6, 7 A pair of rotating shafts 11 Sealing part 14 Bottom part of lamp body 16 Optical axis adjusting mechanism Fr Front Le Left Ri Ri Right

Claims (5)

光源と、ランプボディと、ランプボディに取り付けられてランプボディと共に灯具本体を形成する前面カバーと、灯具本体の左右両端部にそれぞれ設けられ、車両に回動可能に支持される一対の回動軸と、を有する車両用灯具において、
前記一対の回動軸が、前面カバーに設けられたことを特徴とする、車両用灯具。 A light source, a lamp body, a front cover that is attached to the lamp body and forms a lamp body together with the lamp body, and a pair of pivot shafts that are respectively provided at the left and right ends of the lamp body and are rotatably supported by the vehicle In a vehicle lamp having
The vehicular lamp, wherein the pair of rotation shafts are provided on a front cover. 前記一対の回動軸は、前面カバーに一体成形されたことを特徴とする、請求項１に記載の車両用灯具。   The vehicular lamp according to claim 1, wherein the pair of rotation shafts are formed integrally with a front cover. 前記前面カバーは、シール部を介して前記ランプボディに取り付けられ、
前記一対の回動軸は、シール部の前方に設けられたことを特徴とする、請求項１または２に記載の車両用灯具。 The front cover is attached to the lamp body via a seal portion,
The vehicular lamp according to claim 1, wherein the pair of rotation shafts are provided in front of the seal portion. 前記前面カバーは、前方に向かって凸となる湾曲形状を有することを特徴とする、請求項１から３のうちいずれかに記載の車両用灯具。   4. The vehicular lamp according to claim 1, wherein the front cover has a curved shape that protrudes forward. 5. 前記ランプボディは、底部の左右方向の中央位置に光軸調整機構を有することを特徴とする、請求項１から４のうちいずれかに記載の車両用灯具。   The vehicular lamp according to any one of claims 1 to 4, wherein the lamp body has an optical axis adjustment mechanism at a center position in a left-right direction of a bottom portion.
JP2013211718A 2013-10-09 2013-10-09 Vehicle lighting Active JP6192218B2 (en)

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