JPH028402B2

JPH028402B2 -

Info

Publication number: JPH028402B2
Application number: JP58192560A
Authority: JP
Inventors: Masao Naruge
Original assignee: Nissan Motor Co Ltd
Current assignee: Nissan Motor Co Ltd
Priority date: 1983-10-17
Filing date: 1983-10-17
Publication date: 1990-02-23
Also published as: JPS6084705A

Description

【発明の詳細な説明】 (a) 発明の技術分野本発明は、光源バルブを収納したハウジング開
口周縁部とレンズの周縁部とを接着固定するよう
にした自動車用灯具に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to an automotive lamp in which the periphery of a housing opening containing a light source bulb and the periphery of a lens are adhesively fixed.

(b) 従来技術と問題点第１図に示すような前照灯１等の自動車用灯具
では、光源バルブを収納したハウジング開口周縁
部とレンズの周縁部とを接着固定するようにした
構造が一般的（例えば実開昭58−10305号）であ
るが、このようなハウジングとレンズとをその周
縁端にて接着した具体的な前照灯１として従来第
２図乃至第４図に示すようなものがある。尚、第
２図は前照灯の正面図、第３図は第２図における
−断面図、第４図は第２図における−断
面図を示す。(b) Prior Art and Problems Automobile lamps such as headlamps 1 as shown in Figure 1 have a structure in which the periphery of the housing opening that houses the light source bulb and the periphery of the lens are fixed with adhesive. Although it is common (for example, Utility Model Application No. 58-10305), a concrete headlamp 1 in which such a housing and a lens are bonded at their peripheral edges is conventionally shown in FIGS. 2 to 4. There is something. 2 is a front view of the headlamp, FIG. 3 is a cross-sectional view taken in FIG. 2, and FIG. 4 is a cross-sectional view taken in FIG. 2.

ここで、１０はハウジングであり、ハウジング
１０内には第３図に示すようにリフレクタ１１が
設けられ、このリフレクタ１１内に光源バルブ１
２ａ及びシエード１２ｂ等でなる光源ユニツト１
２が収納され、更にこの光源ユニツト１２はハウ
ジング１０に支持固定される構造となつている。
そして、ハウジング１０は基本的に第４図に示す
ように、その開口周縁に沿つて光源バルブ１２ａ
の照射方向に開口する溝部１４が形成され、この
溝部１４を形成したハウジング１０の外側部は、
当該前照灯における上下各２ヵ所で第３図に示す
ように位置決め片１５が突出するようになつてい
る。 Here, 10 is a housing, and a reflector 11 is provided in the housing 10 as shown in FIG.
Light source unit 1 consisting of shade 2a, shade 12b, etc.
The light source unit 12 is supported and fixed to the housing 10.
As shown in FIG. 4, the housing 10 basically has a light source bulb 12a along its opening periphery.
A groove 14 that opens in the irradiation direction is formed, and the outer part of the housing 10 in which this groove 14 is formed is
As shown in FIG. 3, positioning pieces 15 are designed to protrude from two positions on each of the upper and lower sides of the headlamp.

一方、２０はガラス等でなるレンズであり、こ
のレンズ２０は基本的に第４図に示すように、そ
の周縁に、外方に延びると共にハウジング１０の
開口外周縁に当接すべき鍔部２１とハウジング１
０に形成した溝部１４に挿入すべき脚部２２とが
形成されており、特に鍔部２１には、第２図に示
すようにハウジング１０の位置決め片１５と対応
する部分に切欠き部２３が設けられている。 On the other hand, 20 is a lens made of glass or the like, and as shown in FIG. and housing 1
A leg portion 22 is formed to be inserted into the groove portion 14 formed at 0. In particular, the collar portion 21 has a notch portion 23 at a portion corresponding to the positioning piece 15 of the housing 10, as shown in FIG. It is provided.

そして、ハウジング１０の溝部１４に接着剤Ｂ
を充填し、レンズ２０の切欠き部２３と位置決め
片１５とを合わせると共に、レンズ２０の脚部２
２を、鍔部２１がハウジング１０の開口外周縁に
当接するまで挿入することにより、ハウジング１
０とレンズ２０とを接着固定するようにしてい
る。 Then, adhesive B is applied to the groove 14 of the housing 10.
The notch portion 23 of the lens 20 and the positioning piece 15 are aligned, and the leg portion 2 of the lens 20 is filled with
2 until the flange 21 abuts the outer periphery of the opening of the housing 10.
0 and the lens 20 are fixed by adhesive.

尚、２４はハウジング１０とレンズ２０との接
合を強固するために、ハウジング１０の周縁部と
レンズ２０の鍔部２１とを挾持するクリツプであ
り、このクリツプ２４によつて挾持される鍔部２
１は厚肉構造となつている。また、１３はシール
用ゴムカバー、３０はフード、３１は前照灯１の
下端部分を覆う目隠し用のサイトシールドであ
る。 Incidentally, reference numeral 24 denotes a clip that clamps the peripheral edge of the housing 10 and the flange 21 of the lens 20 in order to strengthen the bond between the housing 10 and the lens 20, and the flange 2 held by this clip 24
1 has a thick wall structure. Further, 13 is a rubber cover for sealing, 30 is a hood, and 31 is a sight shield for covering the lower end of the headlamp 1.

ところで、このような前照灯１にあつては、ハ
ウジング１０の位置決め片１５によつてレンズ２
０の上下位置が、またレンズ２０の鍔部２１によ
つてその前後位置が確実に規制できると共に、ハ
ウジング１０の周縁に沿つて設けた溝部１４に充
填された接着剤Ｂによつてハウジング１０とレン
ズ２０とが確実に固定されたものとなる。 By the way, in such a headlamp 1, the lens 2 is fixed by the positioning piece 15 of the housing 10.
0 can be reliably regulated by the flange 21 of the lens 20, and by the adhesive B filled in the groove 14 provided along the periphery of the housing 10. The lens 20 is securely fixed.

しかしながら、ハウジング１０とレンズ２０と
の圧接時にハウジング１０の周縁部とレンズ２０
の鍔部２１との当接部から接着剤Ｂが外部に食み
出し易く、このため食み出した接着剤Ｂを隠すた
めのサイトシールド３１等が必要となり、レンズ
２０の全面を露出する構造がとれない等の造型上
の自由度が制限され、また特に、レンズ２０の上
部から食み出した接着剤Ｂが長時間高温となる外
気に晒されると、当該接着剤Ｂが流れ出して前照
灯１の前面美観を損う恐れがあつた。更にまた、
レンズ２０の周縁での強度保持及びレンズ２０の
前後位置規制を行なう鍔部２１の必要性から、そ
の上下位置規制は、鍔部２１から適宜切欠き部２
３を設け、この切欠き部２３とハウジング１０の
外周縁に切欠き部２３と対応して設けた位置決め
片１５とによつて行なうようにしているが、この
切欠き部２３に位置規制による応力が集中してレ
ンズ２０が破損する恐れがあるため、切欠き部２
３の周辺を特に厚肉にしなければならず、その結
果、当該前照灯１に使用するレンズ２０の成型が
しにくい等の不具合があつた。 However, when the housing 10 and the lens 20 are pressed together, the peripheral edge of the housing 10 and the lens 20
The adhesive B tends to ooze out from the contact area with the flange 21 of the lens 20, and therefore a sight shield 31 or the like is required to hide the oozed out adhesive B, which exposes the entire surface of the lens 20. The degree of freedom in shaping is limited, such as not being able to remove the adhesive, and in particular, if the adhesive B that protrudes from the top of the lens 20 is exposed to high-temperature outside air for a long time, the adhesive B will flow out and cause the headlight to deteriorate. There was a risk that the front appearance of Light 1 would be damaged. Furthermore,
Due to the need for the flange 21 to maintain strength at the periphery of the lens 20 and to regulate the front and back position of the lens 20, the vertical position of the lens 20 can be controlled by cutting the notch 2 as appropriate from the flange 21.
3, and this notch 23 and a positioning piece 15 provided on the outer circumferential edge of the housing 10 in correspondence with the notch 23 are used. The notch 2 may concentrate and damage the lens 20.
3 had to be particularly thick, which resulted in problems such as difficulty in molding the lens 20 used in the headlamp 1.

(c) 発明の目的本発明は上記に鑑みてなされたもので、ハウジ
ング開口周縁部とレンズ周縁部との当接部からの
接着剤の食み出しを防止すると共に、当該接着時
のレンズにおける応力集中をできるだけ少なくし
た自動車用灯具を提供することを目的としてい
る。(c) Purpose of the Invention The present invention has been made in view of the above, and it prevents the adhesive from protruding from the contact area between the housing opening periphery and the lens periphery, and also prevents adhesive from protruding from the contact area between the housing opening periphery and the lens periphery. The object of the present invention is to provide an automobile lamp in which stress concentration is reduced as much as possible.

(d) 発明の構成そして、上記目的を達成するため、本発明は、
光源バルブを収納したハウジングの開口周縁に沿
つて溝部を設ける一方、ハウジングの開口部を覆
うレンズの外周縁には上記溝部に挿入される脚部
と、該溝部の外周壁に当接する鍔部とを形成し、
接着剤が充填された上記溝部内に鍔部が溝部の外
周壁に当接するまでレンズの脚部を挿入して両者
を接着固定するようにした自動車用灯具に於い
て、上記レンズの脚部と鍔部とのの間に、溝部の
外周壁の内面に当接する階段状の突出部を設ける
ようにしたものである。(d) Structure of the invention In order to achieve the above object, the present invention has the following features:
A groove is provided along the periphery of the opening of the housing housing the light source bulb, and a leg portion inserted into the groove is provided on the outer periphery of the lens that covers the opening of the housing, and a flange portion abuts against the outer peripheral wall of the groove. form,
In an automobile lamp, the leg of the lens is inserted into the groove filled with adhesive until the flange comes into contact with the outer peripheral wall of the groove, and the two are fixed by adhesive. A stepped protrusion that abuts the inner surface of the outer peripheral wall of the groove is provided between the groove and the flange.

(e) 発明の実施例以下、本発明の実施例を図面に基づいて説明す
る。第５図及び第６図は本発明に係る前照灯の一
実施例を示す断面図である。第５図において、ハ
ウジング１０には従来と同様にリフレクタ１１が
設けられ、このリフレクタ１１内に光源バルブ１
２ａ及びシエード１２ｂ等でなる光源ユニツト１
２が収納されると共に、この光源ユニツト１がハ
ウジング１０に支持固定されており、更にハウジ
ング１０の開口周縁にもまた従来の基本構造と同
様に溝部１４が形成されている。一方、レンズ２
０は、その周縁に、外方に延びると共に上記溝部
１４の外周壁にに当接すべき鍔部２５とハウジン
グ１０に形成した溝部１４に挿入すべき脚部２６
とが形成され、更に鍔部２５と脚部２６との間に
は、溝部１４の外周壁の内面に当接する階段状の
突出部２７が形成されている。尚、１３，３０及
び３１は従来同様、シール用ゴムカバー、フード
及びサイトシールドである。(e) Embodiments of the invention Hereinafter, embodiments of the invention will be described based on the drawings. 5 and 6 are cross-sectional views showing one embodiment of the headlamp according to the present invention. In FIG. 5, a reflector 11 is provided in the housing 10 as in the conventional case, and a light source bulb 1 is placed inside the reflector 11.
Light source unit 1 consisting of shade 2a, shade 12b, etc.
The light source unit 1 is supported and fixed to the housing 10, and a groove 14 is also formed at the periphery of the opening of the housing 10, similar to the conventional basic structure. On the other hand, lens 2
0 has a flange 25 on its periphery that extends outward and should come into contact with the outer peripheral wall of the groove 14, and a leg 26 that should be inserted into the groove 14 formed in the housing 10.
Further, between the collar portion 25 and the leg portion 26, a stepped protrusion portion 27 is formed which abuts the inner surface of the outer peripheral wall of the groove portion 14. Note that 13, 30, and 31 are a sealing rubber cover, a hood, and a sight shield, as in the conventional case.

そして、上記のような構造となるハウジング１
０とレンズ２０との接合は、まず、溝部１４に接
着剤Ｂを充填し、レンズ１０の突出部２７外周端
をハウジング１０の外方周縁部における溝部１４
の外周壁の内面に沿わせながら、レンズ１０の脚
部２６を、鍔部２５がハウジング１０の外周縁に
当接するまで挿入することにより行なわれる。 Then, the housing 1 having the structure as described above is constructed.
0 and the lens 20, first, the groove 14 is filled with adhesive B, and the outer peripheral end of the protrusion 27 of the lens 10 is bonded to the groove 14 on the outer peripheral edge of the housing 10.
This is done by inserting the leg portion 26 of the lens 10 along the inner surface of the outer peripheral wall of the housing 10 until the flange portion 25 abuts against the outer peripheral edge of the housing 10.

このようにハウジング１０とレンズ２０とをそ
の端部で接合するようにすれば、レンズ２０の上
下取付位置の規制は、突出部２７外周端と当該溝
部１４の外周壁の内面との当接によつて確実に行
なえると共に、第６図の当該接合部の詳細断面図
に示すように、突出部２７のダム効果によつて接
着剤Ｂがハウジング１０とレンズ２０との当接部
から外部に食み出すことを防止することができ
る。 If the housing 10 and the lens 20 are joined at their ends in this way, the upper and lower mounting positions of the lens 20 can be restricted by the contact between the outer peripheral end of the protrusion 27 and the inner surface of the outer peripheral wall of the groove 14. As shown in the detailed cross-sectional view of the joint in FIG. It is possible to prevent it from sticking out.

第７図は、本発明の他の実施例におけるハウジ
ング１０とレンズ２０の接合端を詳細に示す断面
図である。この実施例は、ハウジング１０の外方
周縁端部における溝部１４内壁に段部１６を形成
し、レンズ２０における脚部２６の基端外側部に
形成する突出部２７を当該段部１６に当接するよ
うにしたものである。このような接合構造にする
と、ハウジング１０とレンズ２０の当接面が増加
することになり、更に接着剤Ｂの外部への食み出
し防止効果を高めることができる。 FIG. 7 is a sectional view showing in detail the joining end of the housing 10 and the lens 20 in another embodiment of the present invention. In this embodiment, a step 16 is formed on the inner wall of the groove 14 at the outer peripheral end of the housing 10, and a protrusion 27 formed at the outer proximal end of the leg 26 of the lens 20 is brought into contact with the step 16. This is how it was done. With such a joining structure, the contact surface between the housing 10 and the lens 20 increases, and the effect of preventing the adhesive B from protruding to the outside can be further enhanced.

(f) 発明の効果以上説明したように、本発明によれば、レンズ
周縁に設けた鍔部と脚部との間に階段状の突出部
を形成し、これをハウジングの開口周縁に形成し
た溝部の外周壁内面に当接するようにしたため、
当該突出部によつてレンズの上下位置を確実に規
制することができると共に、ハウジング１０とレ
ンズ２０の当接部からの接着剤の食み出しを突出
部と鍔部とで二重に防止することができる。した
がつて、当該自動車用灯具に使用するレンズで
は、従来のような上下位置決め用の切欠き部及び
その周辺の厚肉部を形成する必要がなく、その成
型が容易なものとなり、また、美観を損うことな
くレンズ全面を露出することが可能になる等その
造型上の自由度を更に増すことができる。(f) Effects of the Invention As explained above, according to the present invention, a stepped protrusion is formed between the flange and the leg provided at the periphery of the lens, and this is formed at the periphery of the opening of the housing. Because it comes into contact with the inner surface of the outer peripheral wall of the groove,
The vertical position of the lens can be reliably regulated by the protruding part, and the protruding part and the flange doubly prevent the adhesive from protruding from the abutting part between the housing 10 and the lens 20. be able to. Therefore, in the lens used in the automobile lamp, there is no need to form a notch for vertical positioning and a thick wall part around it, which is required in the past, and the molding becomes easy, and the aesthetic appearance is improved. The degree of freedom in shaping the lens can be further increased, such as by making it possible to expose the entire surface of the lens without damaging the lens.

[Brief explanation of drawings]

第１図は、自動車用灯具の一例となる前照灯を
示す説明斜視図、第２図は従来の前照灯の構造を
示す正面図、第３図は第２図における−断面
図、第４図は第２図における−断面図、第５
図は本発明に係る前照灯の一実施例を示す第３図
と同様の断面図、第６図は第５図におけるハウジ
ングとレンズとの接合部の詳細を示す拡大断面
図、第７図は本発明の他の実施例におけるハウジ
ングとレンズとの接合部の詳細を示す拡大断面図
である。１…前照灯、１０…ハウジング、１１…リフレ
クタ、１２…光源ユニツト、１４……溝部、２０
…レンズ、２５…鍔部、２６…脚部、２７…突出
部、Ｂ…接着剤。 Fig. 1 is an explanatory perspective view showing a headlamp that is an example of an automotive lighting device, Fig. 2 is a front view showing the structure of a conventional headlamp, and Fig. 3 is a cross-sectional view of Fig. 2; Figure 4 is a cross-sectional view of Figure 2;
The figure is a sectional view similar to FIG. 3 showing an embodiment of the headlamp according to the present invention, FIG. 6 is an enlarged sectional view showing details of the joint between the housing and the lens in FIG. 5, and FIG. 7 FIG. 3 is an enlarged cross-sectional view showing details of a joint between a housing and a lens in another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Headlamp, 10... Housing, 11... Reflector, 12... Light source unit, 14... Groove, 20
... Lens, 25... Flange, 26... Leg, 27... Projection, B... Adhesive.

Claims

[Scope of Claims] 1. A groove is provided along the periphery of the opening of the housing housing the light source bulb, and a leg portion to be inserted into the groove is provided on the outer periphery of the lens that covers the opening of the housing, and a leg portion is provided on the outer periphery of the groove. and a flange that abuts against a wall, and the leg portion of the lens is inserted into the groove filled with adhesive until the flange abuts the outer circumferential wall of the groove, and the two are adhesively fixed. 1. A lighting device for an automobile, characterized in that a step-shaped protrusion is provided between the leg portion of the lens and the flange portion, the step-shaped protrusion portion coming into contact with the inner surface of the outer circumferential wall of the groove portion.