JP2012186075A - Light emitting diode unit waterproof structure - Google Patents

Light emitting diode unit waterproof structure Download PDF

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Publication number
JP2012186075A
JP2012186075A JP2011049259A JP2011049259A JP2012186075A JP 2012186075 A JP2012186075 A JP 2012186075A JP 2011049259 A JP2011049259 A JP 2011049259A JP 2011049259 A JP2011049259 A JP 2011049259A JP 2012186075 A JP2012186075 A JP 2012186075A
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Prior art keywords
housing
packing
emitting diode
holder
opening
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Japanese (ja)
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Kosuke Yoshida
耕輔 吉田
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Yazaki Corp
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Yazaki Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a waterproof structure capable of securing waterproofness by preventing a packing from being turned up during fitting.SOLUTION: A waterproof structure of a light emitting diode unit 10 comprises: a light emitting diode chip 32; a housing 20, in which the light emitting diode chip 32 is built, and which has a mounting opening 20T; a holder 40 mounted to the opening 20T; and a packing 50 mounted on an outer periphery of the holder 40 and sealing between an inner wall of the housing 20 and an outer periphery of the holder 40. The housing 20 has an inclined part 20E, at which an inside diameter of the opening gets gradually larger as it approaches to an outlet of the opening 20T. The packing 50 is inclined so that it gets thicker from the tip to a rear end in a fitting direction, and plural ring-like ribs are formed on an outer periphery of the packing 50. A ridge line across respective top parts of the plural ribs is approximately identical to the inclination of an internal inclined face of the inclined part 20E of the housing 20.

Description

本発明は、発光ダイオードを内蔵したハウジングと、このハウジングに嵌合されるホルダーとの間の防水構造に関するもので、特に、両者の間にパッキンを介在させて成る発光ダイオードユニット防水構造に関する。   The present invention relates to a waterproof structure between a housing incorporating a light emitting diode and a holder fitted in the housing, and more particularly to a waterproof structure of a light emitting diode unit in which a packing is interposed therebetween.

防水を必要とするハウジングとこのハウジングの開口部に嵌合されるホルダーとからなる防水構造において、パッキンをホルダーの外周に嵌合して、ホルダーをハウジングに嵌合させることで、自動的にハウジングの内壁とホルダー外周との間をシールするようにした防水構造のものは公知である(例えば、特許文献1参照)。   In a waterproof structure consisting of a housing that requires waterproofing and a holder that fits into the opening of the housing, the housing is automatically fitted by fitting the packing to the outer periphery of the holder and fitting the holder into the housing. The thing of the waterproof structure which sealed between the inner wall of this and the holder outer periphery is well-known (for example, refer patent document 1).

〈特許文献1記載の防水構造〉
特許文献1記載の防水構造は、具体的にはコネクタの実施例であり、ハウジング本体の内部に収容した雌端子金具の後端の開口部をシールユニットでシールする防水構造のものである。図6は、雌端子金具などを省略して特許文献1記載の防水構造の部分だけを図示した縦断面図で、図6(A)はハウジング本体とシールユニットとの嵌合前、図6(B)はハウジング本体とシールユニットとの嵌合時のパッキン部分の拡大断面図で、(1)は接触した瞬間、(2)はその直後である。
図6において、コネクタ100は、雌端子金具(図示省略)を内部に収容したハウジング本体200と、ハウジング本体200の後方開口部に嵌合されてハウジング本体200の後方開口部を塞ぐシールユニット400とから構成されている。
ハウジング本体200は、図示していないが内部に複数のキャビティが雌端子金具の嵌合方向に沿って貫通し、各キャビティ内における前端部の底面には、端子金具に係止して端子金具を抜け止め状態に保持するランスが形成されている。各キャビティ内には雌端子金具が挿入される。ハウジング本体200は略直方体形状に形成され、その後部にはシールユニット400を組み込むための組付け凹部200Tが形成されている。
シールユニット400は合成樹脂製ハウジングであり、シールユニット400の外周縁にゴム材よりなるパッキン機能を有するシールリング500が設けられている。シールユニット400の大きさはハウジング本体200の組付け凹部200Tに適合して嵌め入れ可能な大きさに形成されている。
シールリング500は外周縁にリブが全周に沿ってかつ前後方向に三条が突出形成されている。
そこで、シールユニット400が組付け凹部200T内に組み付けられた状態では、各シールリング500は組付け凹部200Tの内壁面に密着してハウジング本体200とシールユニット400との間の水密性が保持されるようになる。
<Waterproof structure described in Patent Document 1>
The waterproof structure described in Patent Document 1 is specifically an example of a connector, and has a waterproof structure in which the opening at the rear end of the female terminal fitting housed inside the housing body is sealed with a seal unit. 6 is a longitudinal sectional view showing only the waterproof structure portion described in Patent Document 1 with the female terminal fitting omitted, and FIG. 6 (A) shows the state before fitting the housing body and the seal unit. B) is an enlarged cross-sectional view of the packing portion when the housing body and the seal unit are fitted, (1) is the moment of contact and (2) is immediately after that.
In FIG. 6, the connector 100 includes a housing main body 200 in which a female terminal fitting (not shown) is housed, and a seal unit 400 that is fitted in the rear opening of the housing main body 200 and closes the rear opening of the housing main body 200. It is composed of
Although not shown, the housing body 200 has a plurality of cavities penetrating along the fitting direction of the female terminal fitting, and the bottom of the front end portion in each cavity is locked to the terminal fitting to hold the terminal fitting. A lance is formed to hold the stopper. A female terminal fitting is inserted into each cavity. The housing body 200 is formed in a substantially rectangular parallelepiped shape, and an assembly recess 200T for incorporating the seal unit 400 is formed in the rear part thereof.
The seal unit 400 is a synthetic resin housing, and a seal ring 500 having a packing function made of a rubber material is provided on the outer peripheral edge of the seal unit 400. The size of the seal unit 400 is formed so as to fit into the assembly recess 200T of the housing body 200 and can be fitted.
In the seal ring 500, ribs are formed on the outer periphery along the entire circumference, and three protrusions are formed in the front-rear direction.
Therefore, in a state where the seal unit 400 is assembled in the assembly recess 200T, each seal ring 500 is in close contact with the inner wall surface of the assembly recess 200T and the watertightness between the housing body 200 and the seal unit 400 is maintained. Become so.

特開2009−110685号公報JP 2009-110585 A

〈特許文献1記載の防水構造の問題点〉
特許文献1記載の防水構造によれば、それまでの防水構造と比べて、コネクタをハウジング本体とシールハウジングとから構成し、キャビティの後部側をハウジング本体とは別途成形するようにしている。したがって、シールハウジングの各筒状路はキャビティのランスに対する金型の抜き取りを考慮した大きさを確保する必要がなくなる。このため、従来に比較して筒状路の内径を小さくすることができ、結果としてコネクタ全体を小型化することができる、という効果がある。
しかしながら、図6(B)(1)に図示するように、ハウジング本体200の組付け凹部200Tが、最初にシールリング500のリブの山に当接して、押し進むため、図6(B)(2)に図示するように、シールリング500が捲(めく)れ上がる恐れがありシールリング500が捲れ上がると防水性の確保が困難となった。
また、組付け凹部200Tがシールリング500のリブの山に当接しても、シールリング500が捲れ上がらないようにするには、シールユニット400とシールリング500の結合力を強くするための工夫、例えば、強力な接着剤の使用とか、一体成型などが必要となり、これは製造工程の増加、熟練作業者の確保、製造時間の増加を必要とし、コストアップとなった。
<Problem of waterproof structure described in Patent Document 1>
According to the waterproof structure described in Patent Document 1, the connector is composed of a housing main body and a seal housing, and the rear side of the cavity is formed separately from the housing main body, as compared with the conventional waterproof structure. Therefore, it is not necessary to secure the size of each cylindrical path of the seal housing in consideration of the extraction of the mold with respect to the lance of the cavity. For this reason, there is an effect that the inner diameter of the cylindrical path can be reduced as compared with the conventional case, and as a result, the entire connector can be reduced in size.
However, as shown in FIGS. 6B and 1, the assembly recess 200 </ b> T of the housing main body 200 first comes into contact with the rib crest of the seal ring 500 and pushes forward. As shown in FIG. 2), there is a possibility that the seal ring 500 may be rolled up. When the seal ring 500 is rolled up, it becomes difficult to ensure waterproofness.
In order to prevent the seal ring 500 from rolling up even when the assembly recess 200T abuts against the rib crest of the seal ring 500, a device for increasing the coupling force between the seal unit 400 and the seal ring 500; For example, the use of a strong adhesive or integral molding is required, which requires an increase in manufacturing processes, securing skilled workers, and an increase in manufacturing time, resulting in an increase in cost.

本発明は上記課題を解決するためになされたもので、接着剤の使用や一体成型などをしなくても、パッキンが捲れ上がらないようにし、したがってまた、防水性が充分に確保される防水構造を提供することを目的としている。   The present invention has been made in order to solve the above-described problems, and prevents the packing from being rolled up without using an adhesive or integral molding, and therefore has a waterproof structure in which sufficient waterproofness is ensured. The purpose is to provide.

上記の目的を達成するため、本願第1発明は、発光ダイオードユニット防水構造に係るもので、リード線を備えた発光ダイオードチップと、前記発光ダイオードチップを内蔵し、装着用の開口部を有する透光性のハウジングと、前記ハウジングの前記開口部に装着され、前記発光ダイオードチップの前記リード線を内部に通す導出部を備えたホルダーと、前記ホルダーの外周に装着されて、前記ハウジングの内壁と前記ホルダー外周との間をシールするパッキンと、で構成される発光ダイオードユニット防水構造であって、前記ハウジングは、前記開口部に近づくにつれて前記開口の内径が徐々に大きくなるような内部傾斜面を有しており、前記パッキンは、嵌合方向の先端より後端に向かって徐々に肉厚となる傾斜状をし、かつ、外周にリング状のリブが複数個形成されており、前記複数のリブの各頂部を繋ぐ稜線が前記ハウジングの前記内部傾斜面の傾斜とほぼ等しいことを特徴としている。   In order to achieve the above object, the first invention of the present application relates to a light-emitting diode unit waterproof structure, and includes a light-emitting diode chip having a lead wire, a light-transmitting diode chip built-in, and a transparent opening having a mounting opening. An optical housing; a holder that is attached to the opening of the housing and includes a lead-out portion that passes the lead wire of the light-emitting diode chip; and an inner wall of the housing that is attached to an outer periphery of the holder A waterproof structure for a light-emitting diode unit comprising a seal that seals between the outer periphery of the holder, and the housing has an internal inclined surface that gradually increases in inner diameter of the opening as it approaches the opening. The packing has an inclined shape that gradually increases in thickness from the front end to the rear end in the fitting direction, and is repositioned on the outer periphery. Grayed-shaped ribs are formed in plural, the ridgeline of each top of the plurality of ribs are characterized by substantially equal to the inclination of the inner inclined surface of the housing.

また、本願第2発明は、第1発明の発光ダイオードユニット防水構造において、前記複数のリブのうち嵌合方向後端のリブから順次前記ハウジングの前記内部傾斜面と接触していき、前記ホルダーが前記ハウジングと嵌合した状態で、各リブの圧縮率が同一であることを特徴としている。   The second invention of the present application is the light-emitting diode unit waterproof structure according to the first invention, wherein the plurality of ribs sequentially come into contact with the inner inclined surface of the housing from the rib at the rear end in the fitting direction, and the holder The ribs have the same compressibility when fitted to the housing.

さらに、本願第3発明は、第2発明の発光ダイオードユニット防水構造において、前記パッキンの後端部と前記ホルダーの前記パッキンの後端部と対向する面との間に空隙を設けたことを特徴としている。   Further, the third invention of the present application is characterized in that in the light emitting diode unit waterproof structure of the second invention, a gap is provided between a rear end portion of the packing and a surface of the holder facing the rear end portion of the packing. It is said.

<第1発明の効果>
本願第1発明によれば、複数のリブの各頂部を繋ぐ稜線の傾斜がハウジングの傾斜部の内部傾斜面の傾斜とほぼ等しいため、ハウジングの傾斜部の内部傾斜面に複数のリブの各頂部がほぼ同時に当たるようになり、したがってパッキンの先端が捲れ上がることがない。
<第2発明の効果>
本願第2発明によれば、複数のリブのうち嵌合方向後端のリブから順次前記ハウジングの前記内部傾斜面と接触していくので、パッキンの先端捲れ上がりがいっそう防止される。
また、ホルダーがハウジングと嵌合した状態で、各リブの圧縮率が同一であるので、パッキンの局部的な疲弊が生じることがない。
<第3発明の効果>
本願第3発明によれば、パッキンの後端部と、ホルダーのパッキンの後端部と対向する面と、の間に空隙を設けたので、この空隙がパッキンの逃げ部となり、嵌合時の従来の挿入力の増加を防止することができ、嵌合が容易となる。
<Effect of the first invention>
According to the first invention of this application, since the slope of the ridge line connecting the tops of the plurality of ribs is substantially equal to the slope of the internal slope of the slope of the housing, each top of the plurality of ribs is formed on the internal slope of the slope of the housing. Are hit almost simultaneously, so that the tip of the packing does not squeeze up.
<Effect of the second invention>
According to the second aspect of the present invention, since the ribs at the rear end in the fitting direction sequentially contact the inner inclined surface of the housing among the plurality of ribs, the tip end of the packing is further prevented from rising.
Moreover, since the compression rate of each rib is the same in a state in which the holder is fitted with the housing, local exhaustion of the packing does not occur.
<Effect of the third invention>
According to the third invention of the present application, since a gap is provided between the rear end portion of the packing and the surface facing the rear end portion of the packing of the holder, this gap becomes a relief portion of the packing, An increase in conventional insertion force can be prevented, and fitting becomes easy.

図1は本発明に係る防水構造が適用された発光ダイオードユニットを説明する図で、図1(A)は発光ダイオードユニットの斜視図、図1(B)は発光ダイオードユニットの正面図である。FIG. 1 is a diagram for explaining a light emitting diode unit to which a waterproof structure according to the present invention is applied. FIG. 1 (A) is a perspective view of the light emitting diode unit, and FIG. 1 (B) is a front view of the light emitting diode unit. 図2は図1(B)の発光ダイオードユニットのA−A断面矢視図である。FIG. 2 is a cross-sectional view of the light-emitting diode unit of FIG. 図3はハウジングの縦断面図である。FIG. 3 is a longitudinal sectional view of the housing. 図4はパッキン付きホルダーの縦断面図である。FIG. 4 is a longitudinal sectional view of a holder with packing. 図5は図2の発光ダイオードユニットのハウジングにホルダーが嵌合する寸前の断面図である。FIG. 5 is a cross-sectional view just before the holder fits into the housing of the light emitting diode unit of FIG. 図6は特許文献1記載の防水構造の部分を概略図示した縦断面図で、図6(A)はハウジング本体とシールユニットとの嵌合前、図6(B)はハウジング本体とシールユニットとの嵌合時のパッキン部分の拡大断面図で、(1)は接触した瞬間、(2)はその直後である。6 is a longitudinal sectional view schematically showing a waterproof structure portion described in Patent Document 1. FIG. 6 (A) is before the housing body and the seal unit are fitted, and FIG. 6 (B) is the housing body and the seal unit. (1) is the moment of contact and (2) is immediately after that.

以下、接着剤の使用や一体成型などをしなくても、パッキンが捲れ上がらないようにできる本発明に係る発光ダイオードユニット防水構造について、図1〜図5に基づいて説明する。   Hereinafter, a light-emitting diode unit waterproof structure according to the present invention, which can prevent the packing from being rolled up without using an adhesive or integral molding, will be described with reference to FIGS.

〈実施の形態1〉
図1は本発明に係る防水構造が適用された発光ダイオードユニットを説明する図で、図1(A)は発光ダイオードユニットの斜視図、図1(B)は発光ダイオードユニットの正面図である。図2は図1(B)の発光ダイオードユニットのA−A断面矢視図である。図3はハウジングの縦断面図である。
図1および図2において、発光ダイオードユニット10は、ハウジング20、基板アセンブリ30、ホルダー40、およびホルダー40に組み付くパッキン50で構成されている。
以下、ハウジング20、基板アセンブリ30、ホルダー40、およびパッキン50について説明する。
<Embodiment 1>
FIG. 1 is a diagram for explaining a light emitting diode unit to which a waterproof structure according to the present invention is applied. FIG. 1 (A) is a perspective view of the light emitting diode unit, and FIG. 1 (B) is a front view of the light emitting diode unit. FIG. 2 is a cross-sectional view of the light-emitting diode unit of FIG. FIG. 3 is a longitudinal sectional view of the housing.
1 and 2, the light emitting diode unit 10 includes a housing 20, a board assembly 30, a holder 40, and a packing 50 that is assembled to the holder 40.
Hereinafter, the housing 20, the substrate assembly 30, the holder 40, and the packing 50 will be described.

〈ハウジング20〉
ハウジング20は透明材でできており、収容空間20Hのある直方体部20Cと、直方体部20Cよりも体積の大きいホルダー40(図2)が嵌合される開口部20Tと、直方体部20Cと開口部20Tとを連結する傾斜部20Eとで構成される。
<Housing 20>
The housing 20 is made of a transparent material, and includes a rectangular parallelepiped portion 20C having an accommodation space 20H, an opening 20T into which a holder 40 (FIG. 2) having a larger volume than the rectangular parallelepiped portion 20C is fitted, and the rectangular parallelepiped portion 20C and the opening. It is comprised with the inclination part 20E which connects 20T.

《直方体部20C》
直方体部20Cの収容空間20Hを形成する左右両側壁に、基板支持部材30R、30Rが取り付けられている。各基板支持部材30Rは断面コ字状をした長尺体で、対向する基板支持部材30R、30Rのコ字状の溝間に基板アセンブリ30の基板31がスライド収納されることで、直方体部20Cの収容空間20Hに基板アセンブリ30が収容され、基板アセンブリ30の発光ダイオードからの発光は透明材のハウジング20を透過して外部に拡散される。
直方体部20Cと傾斜部20Eとの境が嵌合面となっており、その内径はDH(図3)である。
<< Cuboid 20C >>
Substrate support members 30R and 30R are attached to the left and right side walls forming the accommodation space 20H of the rectangular parallelepiped portion 20C. Each of the substrate support members 30R is a long body having a U-shaped cross section, and the substrate 31 of the substrate assembly 30 is slidably accommodated between the U-shaped grooves of the opposing substrate support members 30R, 30R. The substrate assembly 30 is accommodated in the accommodating space 20H, and light emitted from the light emitting diodes of the substrate assembly 30 is transmitted through the transparent material housing 20 and diffused to the outside.
The boundary between the rectangular parallelepiped portion 20C and the inclined portion 20E is a fitting surface, and the inner diameter thereof is DH (FIG. 3).

《開口部20T》
ホルダー40の係止突起40K(図4)が係合する係止孔20Kが開口部20Tに形成されている。そこで、ホルダー40がハウジング20の開口部20Tに挿入されると、ホルダー40の係止突起40Kのテーパ部が開口部20Tの縁部に当接し、開口部20Tが外方へ押圧されるようになる。外方へ押圧されると、ハウジング20はその樹脂材料の持つ弾性により開口部20Tが開口を拡げる方向に反(そ)るため、ホルダー40の係止突起40Kは開口部20Tの縁部から内部に進むことができる。そして、最終的にハウジング20とホルダー40が嵌合すると、ホルダー40の係止突起40Kも開口部20Tの係止孔20Kに係合して、これ以降、ハウジング20とホルダー40の抜け防止機能を奏する。開口部20Tの内径はDS(図3)である。
<< Opening 20T >>
A locking hole 20K that engages with the locking protrusion 40K (FIG. 4) of the holder 40 is formed in the opening 20T. Therefore, when the holder 40 is inserted into the opening 20T of the housing 20, the tapered portion of the locking projection 40K of the holder 40 comes into contact with the edge of the opening 20T, and the opening 20T is pressed outward. Become. When pressed outward, the housing 20 is warped in the direction in which the opening 20T expands the opening due to the elasticity of the resin material, so that the locking projection 40K of the holder 40 is moved from the edge of the opening 20T to the inside. You can proceed to. When the housing 20 and the holder 40 are finally fitted, the locking protrusion 40K of the holder 40 is also engaged with the locking hole 20K of the opening 20T, and thereafter, the function of preventing the housing 20 and the holder 40 from coming off is provided. Play. The inner diameter of the opening 20T is DS (FIG. 3).

《傾斜部20E》
ホルダー40の傾斜部20Eの内側のシール面は、ホルダー40との嵌合方向に対し角度θの傾斜角となっている。直方体部20Cと傾斜部20Eの境界に形成された嵌合面の内径をDH(図3)とし、開口部20Tの内径を(図3)DSとし、傾斜部20Eの嵌合方向の長さをLSとすると、
tanθ1=(DS−DH)/(2×LS) ・・・(1)
となる。
この角度θ1は成形要件である型抜きテーパの角度よりも大きい。
<< Inclined part 20E >>
The seal surface inside the inclined portion 20E of the holder 40 has an inclination angle of an angle θ with respect to the fitting direction with the holder 40. The inner diameter of the fitting surface formed at the boundary between the rectangular parallelepiped portion 20C and the inclined portion 20E is DH (FIG. 3), the inner diameter of the opening 20T is (DS) DS, and the length of the inclined portion 20E in the fitting direction is LS,
tan θ1 = (DS−DH) / (2 × LS) (1)
It becomes.
This angle θ1 is larger than the angle of the die cutting taper that is a molding requirement.

〈基板アセンブリ30〉
図1および図2において、基板アセンブリ30は基板31、発光ダイオードチップ32、リード線Wで構成される。基板31はプリント回路を備え、プリント回路上に発光ダイオードチップ32が電気的に接続されかつ機械的に固定されている。基板31の端部のプリント回路に端子WTが設けられ、端子WTにリード線Wの先端が接続されている。リード線Wは端子WTからホルダー40を軸方向に貫通する導出部40H(図2)を通ってホルダー40の外部へ導出されている。リード線Wと導出部40Hとの間のシールはゴム栓40Gが機能している。
<Substrate assembly 30>
1 and 2, the substrate assembly 30 includes a substrate 31, a light emitting diode chip 32, and lead wires W. The substrate 31 includes a printed circuit, and the light emitting diode chip 32 is electrically connected and mechanically fixed on the printed circuit. A terminal WT is provided in the printed circuit at the end of the substrate 31, and the tip of the lead wire W is connected to the terminal WT. The lead wire W is led out of the holder 40 from the terminal WT through a lead-out portion 40H (FIG. 2) penetrating the holder 40 in the axial direction. A rubber plug 40G functions as a seal between the lead wire W and the lead-out portion 40H.

〈ホルダー40〉
図4はパッキン付きホルダーの縦断面図である。図4において、ホルダー40は図4で見て左側(嵌合方向先端側)から右(嵌合方向後端側)に、嵌合部40J、パッキン取付部40P、開口係合部40Tから構成される合成樹脂から成る部品である。
<Holder 40>
FIG. 4 is a longitudinal sectional view of a holder with packing. 4, the holder 40 includes a fitting portion 40J, a packing mounting portion 40P, and an opening engaging portion 40T from the left side (fitting direction front end side) to the right (fitting direction rear end side) as viewed in FIG. Parts made of synthetic resin.

《嵌合部40J》
嵌合部40Jはハウジング20の直方体部20C(図2)の内部空間に嵌合される部位で、パッキン取付部40Pよりも外径が大きくしてある。これによってこの部位で嵌合時にハウジング20の直方体部20C(図2)の内部空間に嵌合されると共に、嵌合離脱時にパッキン50の嵌合方向前方への抜け防止をしている。また、軸方向に貫通する導出部40Hが形成されている。
<< Fitting part 40J >>
The fitting portion 40J is a portion that is fitted into the internal space of the rectangular parallelepiped portion 20C (FIG. 2) of the housing 20, and has an outer diameter larger than that of the packing mounting portion 40P. Thus, at this portion, it is fitted into the internal space of the rectangular parallelepiped portion 20C (FIG. 2) of the housing 20 at the time of fitting, and the packing 50 is prevented from being pulled forward in the fitting direction when the fitting is released. Further, a lead-out portion 40H penetrating in the axial direction is formed.

《パッキン取付部40P》
パッキン取付部40Pは、嵌合部40Jに続く円筒状体で、その軸方向に貫通する導出部40Hが嵌合部40Jから続いて形成されている。円筒状体の外周にパッキン50が嵌合され、パッキン50によってハウジング20の内壁とホルダー40の外周との間がシールされる。
<< Packing mounting part 40P >>
The packing attachment portion 40P is a cylindrical body following the fitting portion 40J, and a lead-out portion 40H penetrating in the axial direction is formed following the fitting portion 40J. A packing 50 is fitted on the outer periphery of the cylindrical body, and the gap between the inner wall of the housing 20 and the outer periphery of the holder 40 is sealed by the packing 50.

《開口係合部40T》
開口係合部40Tはハウジング20の開口部20T(図2)に嵌合される部位で、パッキン取付部40Pに続き、パッキン取付部40Pの外径よりも大きくなっている。また、その軸方向にパッキン取付部40Pから続く導出部40Hが形成されている。導出部40Hを通った発光ダイオードチップ32からのリード線Wはこの導出部40Hからホルダー40の外に導出される。開口係合部40Tの外周に係止突起40Kが形成され、ハウジング20とホルダー40が嵌合したとき、この係止突起40Kが開口部20Tの係止孔20Kに係合し、これ以降、ハウジング20とホルダー40は簡単には抜けなくなる。
<< Opening engagement portion 40T >>
The opening engaging portion 40T is a portion fitted to the opening 20T (FIG. 2) of the housing 20, and is larger than the outer diameter of the packing mounting portion 40P following the packing mounting portion 40P. In addition, a lead-out portion 40H continuing from the packing mounting portion 40P is formed in the axial direction. The lead wire W from the light emitting diode chip 32 that has passed through the lead-out portion 40H is led out of the holder 40 from the lead-out portion 40H. A locking projection 40K is formed on the outer periphery of the opening engaging portion 40T, and when the housing 20 and the holder 40 are fitted, the locking projection 40K engages with the locking hole 20K of the opening 20T. 20 and the holder 40 cannot be easily removed.

〈パッキン50〉
パッキン50はホルダー40のパッキン取付部40Pに取り付けられるもので、その形状は、嵌合方向の先端より後端に向かって徐々に肉厚となる円錐台状をし、その円錐側面の外周にリング状の断面山形リブが複数個(図では3個)形成されており、嵌合方向に対し山形状頂点を結んだ稜線と角度θが設けられている。すなわち、3個の断面山形リブのうち、最小外径のリブの頂点と最大外径のリブの頂点との水平距離をLabとし、最小外径のリブの頂点の高さ(肉厚)をaとし、最大外径のリブの頂点の高さ(肉厚)をbとすると、
tanθ2=(b−a)/Lab ・・・(2)
となる。
<Packing 50>
The packing 50 is attached to the packing mounting portion 40P of the holder 40. The shape of the packing 50 is a truncated cone shape that gradually becomes thicker from the front end to the rear end in the fitting direction, and a ring is formed on the outer periphery of the conical side surface. A plurality of (in the figure, three) ribs having a cross-sectional shape are formed, and a ridge line connecting the mountain-shaped vertices with respect to the fitting direction and an angle θ are provided. That is, among the three cross-section angle ribs, the horizontal distance between the apex of the rib with the smallest outer diameter and the apex of the rib with the largest outer diameter is Lab, and the height (wall thickness) of the apex of the rib with the smallest outer diameter is a. And the height (wall thickness) of the apex of the rib with the maximum outer diameter is b,
tan θ2 = (ba) / Lab (2)
It becomes.

《実施例1:第1発明》
本発明の実施例1によれば、式(1)のθ1と式(2)のθ2をθ1≒θ2としているのが特徴である。
したがって、
(DS−DH)/(2×LS)≒(b−a)/Lab
とすればよい。
このようにすることで、複数のリブの頂点を結んだ稜線の傾斜とハウジング20の傾斜部20Eの内部傾斜面の傾斜とがほぼ等しいため、嵌合の直前を表す図5において、嵌合までの距離が僅かTであっても、複数のリブの各頂部はいずれも傾斜部20Eの内部傾斜面に接触せず、そして図2の嵌合時に複数のリブの各頂部がほぼ同時に傾斜部20Eの内部傾斜面に当たるようになり、したがってパッキン50の先端が捲れ上がることがない。
なお、パッキン50の先端が捲れ上がらないようにしてしかも複数のリブの圧縮率を同一にしてするには、複数のリブの肉厚を同じにして、代わりにパッキン取付部40Pの傾斜をθとしても良い。
Example 1: First Invention
The first embodiment of the present invention is characterized in that θ1 in equation (1) and θ2 in equation (2) are θ1≈θ2.
Therefore,
(DS-DH) / (2 × LS) ≈ (ba) / Lab
And it is sufficient.
By doing in this way, since the inclination of the ridge line connecting the vertices of the plurality of ribs and the inclination of the internal inclined surface of the inclined portion 20E of the housing 20 are substantially equal, in FIG. Even if the distance is a little T, each of the tops of the plurality of ribs does not contact the inner inclined surface of the inclined portion 20E, and the tops of the plurality of ribs are almost simultaneously inclined when the fitting shown in FIG. Thus, the tip of the packing 50 does not squeeze up.
In order to prevent the tip of the packing 50 from rolling up and to make the compression rates of the plurality of ribs the same, the thickness of the plurality of ribs is made the same, and instead the inclination of the packing mounting portion 40P is set to θ. Also good.

《実施例2:第2発明》
また、本発明の実施例2によれば、式(1)のθ1と式(2)のθ2を若干だけ、θ1<θ2としているのが特徴である。したがって、
(DS−DH)/(2×LS)<(b−a)/Lab
とすればよい。
このようにすることで、複数のリブの頂点を結んだ稜線の傾斜θ2の方がハウジング20の傾斜部20Eの内部傾斜面の傾斜θ1よりも若干大きいため、ハウジング20の傾斜部20Eの内部傾斜面に、複数のリブのうち嵌合方向後端のリブから接触していくので、パッキンの先端捲れ上がりがいっそう防止される。
<< Example 2: Second invention >>
The second embodiment of the present invention is characterized in that θ1 <θ2 in the expression (1) and θ2 in the expression (2) are set to a slight degree. Therefore,
(DS-DH) / (2 × LS) <(ba) / Lab
And it is sufficient.
By doing so, the inclination θ2 of the ridge line connecting the vertices of the plurality of ribs is slightly larger than the inclination θ1 of the internal inclined surface of the inclined portion 20E of the housing 20, so that the internal inclination of the inclined portion 20E of the housing 20 is increased. Since the surface comes into contact with the rib at the rear end in the fitting direction among the plurality of ribs, the tip end of the packing is further prevented from rising.

《実施例3:第3発明》
実施例2によれば後端のリブの方が先端のリブよりも早くハウジング20の傾斜部20Eの内部傾斜面に圧縮開始されるので、後端のリブの方が先端のリブよりも大きく圧縮変形するようになる。しかしながら、非圧縮時のパッキンを示す実施例4と圧縮時のパッキンを示す実施例2とにおいて、図4(非圧縮時)のパッキン50の先端のリブの厚みをaとし、図2(圧縮時)のパッキン50の先端のリブの厚みをa’とし、また、図4(非圧縮時)のパッキン50の後端のリブの厚みをbとし、図2(圧縮時)のパッキン50の後端のリブの厚みをb’としたとき、a’/a=b’/bとなるようにa’、a、b’、bをそれぞれを決定すれば圧縮率を同一にでき、これによってパッキン50の局部的な疲弊が生じなくなり、パッキンの寿命が長くなる。そのためには、最小外径のリブの頂点と最大外径のリブの頂点との水平距離をLabとし、最小外径のリブの圧縮時の頂点の高さ(肉厚)をa’とし、最大外径のリブの圧縮時の頂点の高さ(肉厚)をb’とすると、
tanθ3=(b’−a’)/Lab ・・・(3)
となるようにθ3の傾斜を持つ内部傾斜面のハウジング20を用いればよい。
<< Example 3: Third invention >>
According to the second embodiment, the rear end rib starts to be compressed to the inner inclined surface of the inclined portion 20E of the housing 20 earlier than the front end rib, so the rear end rib is compressed more than the front end rib. Deformed. However, in Example 4 showing the packing at the time of non-compression and Example 2 showing the packing at the time of compression, the thickness of the rib at the tip of the packing 50 in FIG. ) Is the thickness of the rib at the tip of the packing 50, and b is the thickness of the rib at the rear end of the packing 50 in FIG. 4 (when not compressed), and the rear end of the packing 50 in FIG. When the thickness of the rib is b ′, a ′, a, b ′, b are determined so that a ′ / a = b ′ / b, so that the compression rate can be made the same. No local exhaustion occurs and the life of the packing is extended. To do so, let Lab be the horizontal distance between the apex of the rib with the smallest outer diameter and the apex of the rib with the largest outer diameter, and let a 'be the height (wall thickness) of the apex when the rib with the smallest outer diameter is compressed. When b ′ is the height (wall thickness) of the apex when the outer diameter rib is compressed,
tan θ3 = (b′−a ′) / Lab (3)
The housing 20 having an internal inclined surface having an inclination of θ3 may be used.

《実施例4:第4発明》
図4において、パッキン50の後端部50Eとホルダー40のパッキン50の後端部50Eと対向する面50Fとの間に空隙Gを設けたのが特徴である。
一方、図6のシールリング500の場合、シールリング500の後端部500Eとシールユニット400の端面400Fとの間に空隙がなく、シールリング500の後端部500Eとシールユニット400の端面400Fとが当接した状態である。したがって、シールユニット400が矢印方向F1に組付け凹部200Tの中へ組み付けられていくと、シールリング500は矢印F2の方向にしわ寄せが進み、シールリングの端面400Fに進行が阻止されるため次第に肉厚が膨らみ、それが反力となって嵌合時の挿入力が大きくなってしまった。
実施例4によれば、嵌合時にパッキン50に後方へのしわ寄せが進んでも、空隙Gがパッキン50のしわ寄せの逃げ部となるため挿入力の増大が生じなく、嵌合が容易となる。
Example 4: Fourth Invention
In FIG. 4, the gap G is provided between the rear end portion 50E of the packing 50 and the surface 50F facing the rear end portion 50E of the packing 50 of the holder 40.
On the other hand, in the case of the seal ring 500 of FIG. 6, there is no gap between the rear end portion 500E of the seal ring 500 and the end surface 400F of the seal unit 400, and the rear end portion 500E of the seal ring 500 and the end surface 400F of the seal unit 400 Are in contact with each other. Therefore, when the seal unit 400 is assembled into the assembly recess 200T in the direction of the arrow F1, the seal ring 500 gradually moves toward the direction of the arrow F2 and is prevented from progressing to the end surface 400F of the seal ring, so that the thickness gradually increases. Thickness swelled, and it became a reaction force, and the insertion force at the time of fitting became large.
According to the fourth embodiment, even when the packing 50 is further wrinkled toward the back during fitting, the gap G becomes a wrinkling escape portion of the packing 50, so that the insertion force does not increase and the fitting becomes easy.

〈まとめ〉
1)θ1≒θ2とすることで、ハウジングの開口部の内部傾斜面に複数のリブの各頂部がほぼ同時に当たようになり、パッキンの先端が捲れ上がることがない。
2)さらに、θ1<θ2とすることで、複数のリブの後端のリブから順次ハウジングの内部傾斜面と接触するようになり、パッキンの先端捲れ上がりがいっそう防止される。
3)パッキンを円錐台状にすることで、嵌合方向の先端と後端のパッキンの肉厚が変わるため、ホルダーがハウジングと嵌合した状態で、各リブの圧縮率が同一になるように肉厚を選ぶことができ、これによりパッキンの局部的な疲弊が生じることがなく、したがって長寿命の発光ダイオードユニットが得られる。
4)パッキンの後端とホルダーのパッキンの後端と対向する面との間に空隙を設けることで、この空隙がパッキンの逃げ部となり、嵌合時の挿入力を下げることができ、嵌合が容易となる。
<Summary>
1) By setting θ1≈θ2, the tops of the plurality of ribs come into contact with the inner inclined surface of the opening of the housing almost simultaneously, and the tip of the packing does not swell.
2) Further, by satisfying θ1 <θ2, the ribs at the rear end of the plurality of ribs come into contact with the inner inclined surface of the housing in order, and the tip end of the packing is further prevented from rising.
3) By making the packing into a truncated cone shape, the thickness of the packing at the front and rear ends in the fitting direction changes, so that the compression rate of each rib is the same when the holder is fitted with the housing. The wall thickness can be selected, so that local exhaustion of the packing does not occur, and thus a long-life light emitting diode unit can be obtained.
4) By providing a space between the back end of the packing and the surface of the holder facing the back end of the packing, this space becomes a clearance for the packing, and the insertion force during fitting can be reduced. Becomes easy.

10 発光ダイオードユニット
20 ハウジング
20C 直方体部
20E 傾斜部
20H 収容空間
20K 係止孔
20T 開口部
30 基板アセンブリ
30R 基板支持部材
31 基板
32 発光ダイオードチップ
40 ホルダー
40G ゴム栓
40H 導出部
40J 嵌合部
40K 係止突起
40P パッキン取付部
40T 開口係合部
50 パッキン
50E 後端部
50F 対向面
WT 端子
W リード線
G 空隙
DESCRIPTION OF SYMBOLS 10 Light emitting diode unit 20 Housing 20C Rectangular body part 20E Inclined part 20H Accommodating space 20K Locking hole 20T Opening part 30 Substrate assembly 30R Substrate support member 31 Substrate 32 Light emitting diode chip 40 Holder 40G Rubber plug 40H Deriving part 40J Fitting part 40K Locking Protrusion 40P Packing mounting portion 40T Opening engagement portion 50 Packing 50E Rear end portion 50F Opposing surface WT Terminal W Lead wire G Gap

Claims (3)

リード線を備えた発光ダイオードチップと、
前記発光ダイオードチップを内蔵し、装着用の開口部を有する透光性のハウジングと、
前記ハウジングの前記開口部に装着され、前記発光ダイオードチップの前記リード線を内部に通す導出部を備えたホルダーと、
前記ホルダーの外周に装着されて、前記ハウジングの内壁と前記ホルダー外周との間をシールするパッキンと、
で構成される発光ダイオードユニット防水構造であって、
前記ハウジングは、前記開口部に近づくにつれて前記開口の内径が徐々に大きくなるような内部傾斜面を有しており、
前記パッキンは、嵌合方向の先端より後端に向かって徐々に肉厚となる傾斜状をし、かつ、外周にリング状のリブが複数個形成されており、前記複数のリブの各頂部を繋ぐ稜線は前記ハウジングの前記内部傾斜面の傾斜とほぼ等しいことを特徴とする発光ダイオードユニット防水構造。
A light emitting diode chip with leads; and
A light-transmitting housing containing the light-emitting diode chip and having an opening for mounting;
A holder that is attached to the opening of the housing and includes a lead-out portion through which the lead wire of the light-emitting diode chip passes;
A packing that is attached to the outer periphery of the holder and seals between the inner wall of the housing and the outer periphery of the holder;
Light-emitting diode unit waterproof structure composed of
The housing has an internal inclined surface such that the inner diameter of the opening gradually increases as approaching the opening,
The packing has an inclined shape that gradually increases in thickness from the front end to the rear end in the fitting direction, and a plurality of ring-shaped ribs are formed on the outer periphery. The waterproof structure for a light emitting diode unit, wherein a connecting ridge line is substantially equal to an inclination of the inner inclined surface of the housing.
前記複数のリブのうち嵌合方向後端のリブから順次前記ハウジングの前記内部傾斜面と接触していき、前記ホルダーが前記ハウジングと嵌合した状態で、各リブの圧縮率が同一であることを特徴とする請求項1記載の発光ダイオードユニット防水構造。   Of the plurality of ribs, the ribs are in contact with the inner inclined surface of the housing sequentially from the rear end rib in the fitting direction, and the compression rate of each rib is the same in a state where the holder is fitted with the housing. The light-emitting diode unit waterproof structure according to claim 1. 前記パッキンの後端部と前記ホルダーの前記パッキンの後端部と対向する面との間に空隙を設けたことを特徴とする請求項2記載の発光ダイオードユニット防水構造。   The waterproof structure for a light emitting diode unit according to claim 2, wherein a gap is provided between a rear end portion of the packing and a surface of the holder facing the rear end portion of the packing.
JP2011049259A 2011-03-07 2011-03-07 Light emitting diode unit waterproof structure Withdrawn JP2012186075A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015201331A (en) * 2014-04-08 2015-11-12 住友電装株式会社 waterproof connector
JP2019041580A (en) * 2015-02-13 2019-03-14 株式会社マキタ Light emission display part
CN113451834A (en) * 2020-03-27 2021-09-28 Aptiv技术有限公司 Sealed electrical connector

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015201331A (en) * 2014-04-08 2015-11-12 住友電装株式会社 waterproof connector
JP2019041580A (en) * 2015-02-13 2019-03-14 株式会社マキタ Light emission display part
CN113451834A (en) * 2020-03-27 2021-09-28 Aptiv技术有限公司 Sealed electrical connector
EP3886264A1 (en) * 2020-03-27 2021-09-29 Aptiv Technologies Limited Sealed electrical connector
US11652314B2 (en) 2020-03-27 2023-05-16 Aptiv Technologies Limited Sealed electrical connector
CN113451834B (en) * 2020-03-27 2023-09-29 Aptiv技术有限公司 sealed electrical connector

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