JP2018098354A - Housing case for electronic control device - Google Patents

Housing case for electronic control device Download PDF

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JP2018098354A
JP2018098354A JP2016241425A JP2016241425A JP2018098354A JP 2018098354 A JP2018098354 A JP 2018098354A JP 2016241425 A JP2016241425 A JP 2016241425A JP 2016241425 A JP2016241425 A JP 2016241425A JP 2018098354 A JP2018098354 A JP 2018098354A
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storage case
resin material
convex portion
housing case
electronic control
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JP6767855B2 (en
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敬法 佐脇
Takanori Sawaki
敬法 佐脇
孝龍 顧
Xiaolo Gu
孝龍 顧
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Keihin Corp
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Keihin Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a housing case capable of suppressing weight increase while securing the quantity of a resin material that fills a projection protruding outsides even if the housing case includes the projection on an outer surface.SOLUTION: A housing case 20 includes a projection 30 and comprises an inward projection 35 which protrudes from an inner surface 33a of a back sidewall 33 insides (to a center of the housing case 20). The back sidewall 33 is thickened substantially twice as much as an upper face 24 locally. When a resin material is injected from a gate 36, a branched upward flow successively forms an inclined part 28, the upper face 24, the back sidewall 33 and a ceiling part 32. Since the inward projection 35 is additionally provided on the back sidewall 33, a channel area of the back sidewall 33 can be enlarged, and the flow of the resin material on the back sidewall 33 is promoted. As a result, the outward projection 30 is sufficiently filled with the resin material. Since the inward projection 35 is small-sized, weight increase of the housing case 20 can be suppressed.SELECTED DRAWING: Figure 2

Description

本発明は、車両、特に二輪車に搭載され、エンジンの制御を行う回路基板を収納する電子制御装置用の収納ケースに関する。   The present invention relates to a storage case for an electronic control device that is mounted on a vehicle, particularly a two-wheeled vehicle, and stores a circuit board that controls an engine.

回路基板に対する防水や防塵を図ることができ、回路基板を健全な状態に保つことができるため、回路基板は収納ケースに収納される。収納ケースを含む電子制御装置は各種の形態のものが実用化されてきた（例えば、特許文献１（図１、図３）参照）。   Since the circuit board can be waterproofed and dust-proof and the circuit board can be kept in a healthy state, the circuit board is stored in a storage case. Various types of electronic control devices including a storage case have been put into practical use (see, for example, Patent Document 1 (FIGS. 1 and 3)).

特許文献１の図１に示されるように、電子制御装置（１０）（括弧付き数字は、特許文献１に記載された符号を示す。以下同様）は、回路基板（３０）と、封筒型の収納ケース（４０）と、封入材料（特許文献１図３、符号（６０））とからなる。   As shown in FIG. 1 of Patent Document 1, the electronic control device (10) (the numbers in parentheses indicate the reference numerals described in Patent Document 1. The same applies hereinafter) includes a circuit board (30) and an envelope type. It consists of a storage case (40) and an encapsulating material (Patent Document 1, FIG. 3, reference numeral (60)).

回路基板（３０）は、収納ケース（４０）の開放部（４１）から挿入される。
封入材料は、流動性に富む樹脂であり、回路基板（３０）が収納ケース（４０）に挿入された後に、開放部（４１）から収納ケース（４０）内に充填され、硬化される。硬化した封入材料で回路基板（３０）が水や塵から保護される。 The circuit board (30) is inserted from the opening (41) of the storage case (40).
The encapsulating material is a resin having high fluidity, and after the circuit board (30) is inserted into the storage case (40), it is filled into the storage case (40) from the open portion (41) and cured. The hardened encapsulant protects the circuit board (30) from water and dust.

収納ケース（４０）に着目すると、上面に外方へ突出する凸部を備えている。この凸部は、低頂壁部（４２ａ、４２ｂ）から外方へ延びる一対の接続壁部（４３、４３）と、一対の接続壁部（４３、４３）の先端同士を繋ぐ高頂壁部（４９）とからなる。このような凸部は、基板（３０）に実装された背高部品（２３）を収納することを目的に設けられる（特許文献１図３）。   When attention is paid to the storage case (40), the upper surface is provided with a convex portion protruding outward. The convex portions are a pair of connecting wall portions (43, 43) extending outward from the low top wall portions (42a, 42b) and a high top wall portion connecting the tips of the pair of connecting wall portions (43, 43). (49). Such a convex part is provided for the purpose of accommodating the tall component (23) mounted on the substrate (30) (FIG. 3 of Patent Document 1).

収納ケース（４０）は、開放部（４１）を有する封筒型ケースであって、底板部（４５）と、低頂壁部（４２ａ、４２ｂ）と、３面の側壁部（４８、４８、４８）とで囲われている。
一般に、樹脂材料を射出するゲートは、開放部（４１）から離れた側壁部（４８）、すなわち開放部（４１）とは反対側の側壁部（４８）側に配置される。ゲートから射出された樹脂材料は、上下左右に分流しつつ開放部（４１）へ流れ、結果、底板部（４５）と、低頂壁部（４２ａ、４２ｂ）と、３面の側壁部（４８、４８、４８）とが形成される。 The storage case (40) is an envelope-type case having an open portion (41), and includes a bottom plate portion (45), low top wall portions (42a, 42b), and three side wall portions (48, 48, 48). ).
Generally, the gate for injecting the resin material is disposed on the side wall (48) away from the opening (41), that is, on the side of the side wall (48) opposite to the opening (41). The resin material injected from the gate flows to the open portion (41) while being divided vertically and horizontally, and as a result, the bottom plate portion (45), the low top wall portions (42a, 42b), and the three side wall portions (48). , 48, 48).

このとき、低頂壁部（４２ａ、４２ｂ）と比較すると、接続壁部（４３、４３）及び高頂壁部（４９）からなる凸部へは、樹脂材料が流れ難くなる。結果、樹脂材料の充填量が不足し、凸部に成形不良が発生しやすくなる。
対策として、低頂壁部（４２ａ、４２ｂ）の厚さを増大して、凸部への樹脂材料の流れを促すことが考えられる。しかし、この対策では、樹脂材料の所要量が増加して加工費用が増加する上に、収納ケース（４０）の重量増加を招く。 At this time, compared with the low top wall portions (42a, 42b), it is difficult for the resin material to flow to the convex portions including the connection wall portions (43, 43) and the high top wall portion (49). As a result, the filling amount of the resin material is insufficient, and molding defects are likely to occur at the convex portions.
As a countermeasure, it is conceivable to increase the thickness of the low top wall portions (42a, 42b) to promote the flow of the resin material to the convex portions. However, this measure increases the required amount of the resin material and increases the processing cost, and increases the weight of the storage case (40).

車両の軽量化が求められる中、外表面に外側へ突出する凸部を有する収納ケースであっても、凸部への樹脂材料の充填量を確保しつつ、重量増加を抑えることができる構造の収納ケースが望まれる。   While a reduction in weight of a vehicle is required, even a storage case having a convex portion protruding outward on the outer surface has a structure that can suppress an increase in weight while ensuring the amount of resin material filling the convex portion. A storage case is desired.

特開２０１５−４７９３１号公報JP 2015-47931 A

本発明は、外表面に外側へ突出する凸部を有する収納ケースであっても、凸部への樹脂材料の充填量を確保しつつ、重量増加を抑えることができる収納ケースを提供することを課題とする。   The present invention provides a storage case capable of suppressing an increase in weight while securing a filling amount of a resin material in the convex portion even in a storage case having a convex portion protruding outward on the outer surface. Let it be an issue.

請求項１に係る発明は、少なくとも一端に開口部を備え回路基板を収納する封筒型で且つ樹脂製の電子制御装置用の収納ケースであって、
この収納ケースは、外表面に外側へ突出する外方凸部を有し、この外方凸部に対応した内方凸部を内表面に内側へ突出するように有していることを特徴とする。 The invention according to claim 1 is an envelope-type storage case for an electronic control device made of resin and having an opening at least at one end and storing a circuit board,
The storage case has an outer convex portion projecting outward on the outer surface, and an inner convex portion corresponding to the outer convex portion so as to project inward on the inner surface. To do.

請求項２に係る発明では、収納ケースは、射出成形品であって、内方凸部は、ゲートから射出された樹脂材料の流れに沿って配置される縦壁状のリブであることを特徴とする。   In the invention according to claim 2, the storage case is an injection-molded product, and the inward convex portion is a vertical wall-shaped rib arranged along the flow of the resin material injected from the gate. And

請求項３に係る発明では、樹脂材料は、樹脂にガラスの短繊維が混ぜられていることを特徴とする。   In the invention according to claim 3, the resin material is characterized in that a glass short fiber is mixed with the resin.

請求項１に係る発明では、収納ケースの内方面に内側へ突出する内方凸部を設けた。この内方凸部は外方凸部に対応して設けられているため、樹脂材料が流れやすい内方凸部を通って外方凸部へ供給される。よって、外方凸部への樹脂材料の充填量が確保される。
内方凸部は、収納ケースに局部的に設けられるため、収納ケースの重量増加を抑えることができる。加えて、内方凸部は外から見えないため、収納ケースの外観性は良好となる。
結果、請求項１により、外方凸部への樹脂材料の充填量を確保しつつ、重量増加を抑えることができる収納ケースが提供される。 In the invention which concerns on Claim 1, the inward convex part which protrudes inside is provided in the inner surface of the storage case. Since the inward convex portion is provided corresponding to the outward convex portion, the resin material is supplied to the outward convex portion through the inward convex portion where the resin material easily flows. Therefore, the filling amount of the resin material to the outward convex portion is ensured.
Since the inward convex portion is locally provided in the storage case, an increase in the weight of the storage case can be suppressed. In addition, since the inward convex portion is not visible from the outside, the appearance of the storage case is good.
As a result, according to the first aspect of the present invention, there is provided a storage case capable of suppressing an increase in weight while ensuring a filling amount of the resin material in the outward convex portion.

請求項２に係る発明では、収納ケースは、射出成形品であって、内方凸部は、ゲートから射出された樹脂材料の流れに沿って配置される縦壁状のリブである。
内方凸部が縦壁状のリブであるため、内方凸部は十分にコンパクトになり、重量増加を一層抑えることができる。 In the invention according to claim 2, the storage case is an injection-molded product, and the inward convex portion is a vertical wall-shaped rib arranged along the flow of the resin material injected from the gate.
Since the inward convex portion is a rib having a vertical wall shape, the inward convex portion is sufficiently compact, and an increase in weight can be further suppressed.

請求項３に係る発明では、樹脂材料は、樹脂にガラスの短繊維が混ぜられている。
ガラスの短繊維は強化材料である。このようなガラスの短繊維を樹脂に混ぜたので、収納ケースの剛性を一層高めることができる。 In the invention which concerns on Claim 3, the short fiber of glass is mixed with resin in the resin material.
Glass short fiber is a reinforcing material. Since such glass short fibers are mixed with the resin, the rigidity of the storage case can be further increased.

本発明に係る収納ケースを含む電子制御装置の分解斜視図である。It is a disassembled perspective view of the electronic control apparatus containing the storage case which concerns on this invention. 本発明に係る収納ケースの平面図及び断面図である。It is the top view and sectional drawing of the storage case which concern on this invention. 変更例を示す収納ケースの平面図及び断面図である。It is the top view and sectional drawing of the storage case which show the example of a change. 更なる変更例を示す収納ケースの平面図及び断面図である。It is the top view and sectional drawing of a storage case which show the further example of a change.

本発明の実施の形態を添付図に基づいて以下に説明する。なお、図面は符号の向きに見るものとする。   Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.

図１に示すように、電子制御装置１０は、コネクター１１Ｌ、１１Ｒ（Ｌは左を示す添え字であり、Ｒは右を示す添え字である。以下同じ）が取付けられると共に一般電子部品１２及びこの一般電子部品１２より背が高い背高電子部品１３が実装されている回路基板１４と、コネクター１１Ｌ、１１Ｒの一部が突出した状態で回路基板１４を収納する電子制御装置用の収納ケース２０（以下、単に収納ケース２０と記す。）と、回路基板１４が収納された状態で収納ケース２０内に封入される封入材料４０とを備えている。   As shown in FIG. 1, the electronic control device 10 has connectors 11L and 11R (L is a subscript indicating the left, R is a subscript indicating the right, and so on) and the general electronic component 12 and A circuit board 14 on which a tall electronic component 13 that is taller than the general electronic component 12 is mounted, and a storage case 20 for an electronic control device that stores the circuit board 14 in a state where some of the connectors 11L and 11R protrude. (Hereinafter simply referred to as a storage case 20) and an encapsulating material 40 enclosed in the storage case 20 in a state in which the circuit board 14 is stored.

封入材料４０は便宜的に小判形状として描いたが、不定形材料であるため、この形状にとらわれるものではない。また、回路基板１４上に構成される回路は省略した。そして、コネクター１１Ｌ、１１Ｒ及び一般電子部品１２及び背高電子部品１３の数や形状や配置位置は実施例に限定されるものではない。   The encapsulating material 40 is drawn as an oval shape for convenience, but is not limited to this shape because it is an indeterminate material. Further, the circuit configured on the circuit board 14 is omitted. And the number, shape, and arrangement position of the connectors 11L and 11R, the general electronic component 12 and the tall electronic component 13 are not limited to the embodiments.

回路基板１４は、例えば、銅箔付きガラスエポキシ樹脂板１５と、この樹脂板１５の上面に実装された一般電子部品１２及び背高電子部品１３と、樹脂板１５の一端に取付けられたコネクター１１Ｌ、１１Ｒとからなる。   The circuit board 14 includes, for example, a glass epoxy resin plate 15 with copper foil, a general electronic component 12 and a tall electronic component 13 mounted on the upper surface of the resin plate 15, and a connector 11L attached to one end of the resin plate 15. , 11R.

収納ケース２０は、封筒型形状を呈し、コネクター１１Ｌ、１１Ｒが貫通する開口状の正面２１と、この正面２１に対面する背面２２と、この背面２２と正面２１とを繋ぐ左右の側面２３Ｌ、２３Ｒと、正面２１、背面２２、左右の側面２３Ｌ、２３Ｒで囲われる上面２４及び底面２５とからなる６面を有する。左右の側面２３Ｌ、２３Ｒに各々ステー２６Ｌ、２６Ｒを備えている。ステー２６Ｌ、２６Ｒを介して電子制御装置１０を車体に締結することができる。   The storage case 20 has an envelope shape, and has an open front surface 21 through which the connectors 11L and 11R penetrate, a rear surface 22 facing the front surface 21, and left and right side surfaces 23L and 23R connecting the rear surface 22 and the front surface 21. And six surfaces including a front surface 21, a rear surface 22, and upper and lower surfaces 24 and 25 surrounded by left and right side surfaces 23L and 23R. Stays 26L and 26R are provided on the left and right side surfaces 23L and 23R, respectively. The electronic control device 10 can be fastened to the vehicle body via the stays 26L and 26R.

背面２２にゲート跡２７、２７が残っている。なお、ゲート跡２７は、中央一箇所であってもよい。また、実施例では、正面２１に開口部を有するが、開口部は複数箇所に設けてもよい。すなわち、収納ケース２０は、少なくとも一端に開口部を備えたケースであればよい。   Gate marks 27 and 27 remain on the back surface 22. Note that the gate mark 27 may be at one central location. In the embodiment, the front surface 21 has openings, but the openings may be provided at a plurality of locations. That is, the storage case 20 may be a case having an opening at at least one end.

上面２４は、背面２２と上面２４とを繋ぐ傾斜部２８と、外側に突出する外方凸部３０を備えている。この外方凸部３０に、背高電子部品１３を収納することができる。
外方凸部３０は、上面２４から起立する左右一対の起立壁３１Ｌ、３１Ｒと、一対の起立壁３１Ｌ、３１Ｒの上端同士を繋ぐ天井部３２と、この天井部３２の背面２２側端から上面２４に下がる背面側壁３３とを備えている。 The upper surface 24 includes an inclined portion 28 that connects the rear surface 22 and the upper surface 24, and an outward convex portion 30 that protrudes outward. The tall electronic component 13 can be accommodated in the outward projection 30.
The outward convex portion 30 includes a pair of left and right standing walls 31L and 31R that rises from the upper surface 24, a ceiling portion 32 that connects the upper ends of the pair of standing walls 31L and 31R, and an upper surface from the rear 22 side end of the ceiling portion 32. 24 and a rear side wall 33 that goes down to 24.

このような複雑な形状とされた収納ケース２０の平面図及び断面図を、図２に基づいて説明する。
図２（ａ）のｂ−ｂ線断面図である図２（ｂ）に示すように、この断面では、収納ケース２０は、開口部を兼ねる正面２１と、この正面２１の下端から延びる底面２５と、正面２１の上端から延びる天井部３２と、この天井部３２から下がる背面側壁３３と、この背面側壁３３から延びる上面２４の一部と、この上面２４から斜め下へ延びる傾斜部２８と、この傾斜部２８の先端と底面２５の端部を繋ぐ背面２２とを備えている。 A plan view and a cross-sectional view of the storage case 20 having such a complicated shape will be described with reference to FIG.
As shown in FIG. 2B, which is a cross-sectional view taken along the line bb of FIG. 2A, in this cross section, the storage case 20 has a front surface 21 that also serves as an opening, and a bottom surface 25 that extends from the lower end of the front surface 21. A ceiling portion 32 extending from the upper end of the front surface 21, a rear side wall 33 descending from the ceiling portion 32, a part of the upper surface 24 extending from the rear side wall 33, and an inclined portion 28 extending obliquely downward from the upper surface 24; The back surface 22 which connects the front-end | tip of this inclination part 28 and the edge part of the bottom face 25 is provided.

背面側壁３３は、傾斜してはいるものの、傾斜部２８よりは起立している。
そして、この実施例では、背面側壁３３の内表面３３ａから内側（収納ケース２０の中心）へ突出する内方凸部３５を備えている。したがって、見かけ上、背面側壁３３は、局部的ではあるが、上面２４より２倍程度厚くなっている。 Although the back side wall 33 is inclined, it stands up from the inclined portion 28.
In this embodiment, an inward convex portion 35 that protrudes inward (center of the storage case 20) from the inner surface 33a of the back side wall 33 is provided. Therefore, the rear side wall 33 is apparently about twice as thick as the upper surface 24 although it is localized.

想像線で示すゲート３６から樹脂材料を射出すると、樹脂材料は、上下に分流しつつ背面２２を形成し、下向きの流れは底面２５を形成する。底面２５は比較的単純な形状であるため、樹脂材料の流れは円滑になる。   When the resin material is injected from the gate 36 indicated by an imaginary line, the resin material forms the back surface 22 while being divided up and down, and the downward flow forms the bottom surface 25. Since the bottom surface 25 has a relatively simple shape, the flow of the resin material becomes smooth.

一方、背面２２から分岐した上向き流れは、傾斜部２８、上面２４、背面側壁３３、天井部３２を順次形成するが、流れ方向が複雑に変化するため、特に、背面側壁３３での樹脂の流れが心配になる。
しかし、内方凸部３５を背面側壁３３に付設したため、背面側壁３３の流路面積が拡大でき、背面側壁３３での樹脂材料の流れが促される。結果、外方凸部３０への樹脂材料の充填が十分になる。 On the other hand, the upward flow branched from the rear surface 22 forms the inclined portion 28, the upper surface 24, the rear side wall 33, and the ceiling portion 32 in order, but the flow direction changes in a complicated manner. Worries.
However, since the inward convex portion 35 is attached to the back side wall 33, the flow path area of the back side wall 33 can be enlarged, and the flow of the resin material on the back side wall 33 is promoted. As a result, the outer convex portion 30 is sufficiently filled with the resin material.

内方凸部３５は、外方凸部３０に対応していればよく、形状や配置位置は任意である。
好ましい形状や配置位置を、図面に基づいて以下に説明する。
図２（ａ）に示すように、内方凸部３５は、樹脂材料の流れに沿って配置される縦壁状のリブ３５Ａが推奨される。この例ではリブ３５Ａの総数は４個であるが、個数やピッチは任意である。リブ３５Ａであれば、内方凸部３５は十分にコンパクトになり、収納ケース２０の重量増加を抑えることができる。 The inward convex part 35 should just respond | correspond to the outward convex part 30, and a shape and an arrangement position are arbitrary.
Preferred shapes and arrangement positions will be described below based on the drawings.
As shown in FIG. 2A, it is recommended that the inward protruding portion 35 be a vertical wall-shaped rib 35A arranged along the flow of the resin material. In this example, the total number of ribs 35A is four, but the number and pitch are arbitrary. If it is rib 35A, the inward convex part 35 becomes fully compact, and the weight increase of the storage case 20 can be suppressed.

樹脂材料は、樹脂のみの他、樹脂にガラス繊維を混合してもよい。ガラス繊維は補強作用を発揮する。ガラス繊維は短繊維と長繊維とがあるが、短繊維を採用する。
ガラスの短繊維３８は、径が数μｍで長さが数百μｍであって、十分に小さいため、射出機で樹脂と混練し、樹脂に混ぜた状態でノズルから射出される。 In addition to the resin, the resin material may be mixed with glass fiber. Glass fiber exhibits a reinforcing action. Glass fibers include short fibers and long fibers, but short fibers are used.
Since the short glass fiber 38 has a diameter of several μm and a length of several hundred μm and is sufficiently small, it is kneaded with a resin by an injection machine and injected from the nozzle in a state mixed with the resin.

次に、内方凸部３５の変更例を図面に基づいて説明する。なお、図３及び図４において、図２と共通する要素には、図２と同じ符号を付し、共通要素の詳しい説明は省略する。   Next, a modified example of the inward convex portion 35 will be described based on the drawings. 3 and 4, elements common to those in FIG. 2 are denoted by the same reference numerals as those in FIG. 2, and detailed description of the common elements is omitted.

図３（ａ）に示すように、背面２２の左右方向中央付近にゲート３６を設けた場合に、このゲート３６から放射状にリブ３５Ｂ、３５Ｃを配置してもよい。リブ３５Ｂ、３５Ｃの全てを同じ厚さ（リブ厚）にしてもよいが、外方凸部３０に直接向かう中央のリブ３５Ｂを、他のリブ３５Ｃより厚くすることが推奨される。より多量の樹脂材料を外方凸部３０に向かわせることができるからである。   As shown in FIG. 3A, ribs 35 </ b> B and 35 </ b> C may be arranged radially from the gate 36 when the gate 36 is provided near the center of the back surface 22 in the left-right direction. Although all of the ribs 35B and 35C may have the same thickness (rib thickness), it is recommended that the central rib 35B directly toward the outward convex portion 30 be thicker than the other ribs 35C. This is because a larger amount of the resin material can be directed to the outward convex portion 30.

図３（ａ）のｂ−ｂ線断面図である図３（ｂ）に示すように、樹脂材料が比較的流れ難い傾斜部２８の内表面から内側へ突出するように内方凸部３５としてのリブ３５Ｂが設けられている。ゲート３６から射出された樹脂材料の一部は、リブ３５Ｂで流路面積が拡張された傾斜部２８を円滑に流れ、比較的高い流速で背面側壁３３に流入するため、外方凸部３０への充填が十分になる。   As shown in FIG. 3B, which is a cross-sectional view taken along the line bb of FIG. 3A, the inward convex portion 35 is formed so that the resin material protrudes inward from the inner surface of the inclined portion 28 that is relatively difficult to flow. The rib 35B is provided. A part of the resin material injected from the gate 36 flows smoothly through the inclined portion 28 whose flow path area is expanded by the rib 35B and flows into the rear side wall 33 at a relatively high flow rate. The filling will be sufficient.

なお、リブ３５Ｂを設けた上で、図２に示すリブ３５Ａを付加することは差し支えない。リブ３５Ａとリブ３５Ｂとにより、樹脂材料の流れを更に促すことができるからである。   In addition, after providing the rib 35B, it does not interfere with adding the rib 35A shown in FIG. This is because the flow of the resin material can be further promoted by the ribs 35A and the ribs 35B.

また、図４（ａ）に示すように、内方凸部３５は、傾斜部２８の下縁に沿って延びるヘッダー状のリブ３５Ｄと、このリブ３５Ｄから上面２４に向かって分岐するリブ３５Ｅ、３５Ｆで構成してもよい。ゲート３６から射出された樹脂材料はリブ３５Ｄで左右に分配され、次にリブ３５Ｅを通って外方凸部３０に向かうと共に複数のリブ３５Ｆと通って上面２４に向かう。   Further, as shown in FIG. 4A, the inward convex portion 35 includes a header-like rib 35D extending along the lower edge of the inclined portion 28, and a rib 35E branched from the rib 35D toward the upper surface 24. You may comprise by 35F. The resin material injected from the gate 36 is distributed to the left and right by the ribs 35D, and then passes through the ribs 35E toward the outward projection 30 and through the plurality of ribs 35F toward the upper surface 24.

図４（ａ）のｂ−ｂ線断面図である図４（ｂ）に示すように、樹脂材料が比較的流れ難い傾斜部２８の内表面から内側へ突出するように内方凸部３５としてのリブ３５Ｄ、３５Ｅが設けられている。ゲート３６から射出された樹脂材料の一部は、リブ３５Ｅで流路面積が拡張された傾斜部２８を円滑に流れ、比較的高い流速で背面側壁３３に流入するため、外方凸部３０への充填が十分になる。   As shown in FIG. 4B, which is a cross-sectional view taken along the line bb of FIG. 4A, the inward convex portion 35 is formed so that the resin material protrudes inward from the inner surface of the inclined portion 28 that is relatively difficult to flow. The ribs 35D and 35E are provided. A part of the resin material injected from the gate 36 flows smoothly through the inclined portion 28 whose flow path area is expanded by the rib 35E and flows into the rear side wall 33 at a relatively high flow rate. The filling will be sufficient.

なお、リブ３５Ｄ、３５Ｅ、３５Ｆを設けた上で、図２に示すリブ３５Ａを付加することは差し支えない。リブ３５Ａとリブ３５Ｄ、３５Ｅ、３５Ｆとにより、樹脂材料の流れを更に促すことができるからである。
図４（ａ）において、リブ３５Ｅを、その他のリブ３５Ｆより厚くして、樹脂材料を優先的に外方凸部３０へ導くようにすることは好ましいことである。 In addition, after providing the ribs 35D, 35E, and 35F, the rib 35A shown in FIG. 2 may be added. This is because the flow of the resin material can be further promoted by the ribs 35A and the ribs 35D, 35E, and 35F.
In FIG. 4A, it is preferable to make the rib 35E thicker than the other ribs 35F so that the resin material is preferentially guided to the outward convex portion 30.

本発明は、車両に搭載される電子制御装置に好適である。   The present invention is suitable for an electronic control device mounted on a vehicle.

１０...電子制御装置、１４...回路基板、２０...電子制御装置用の収納ケース、２１...開口部を兼ねる正面、３０...外方凸部、３５...内方凸部、３８...ガラスの短繊維。   DESCRIPTION OF SYMBOLS 10 ... Electronic control device, 14 ... Circuit board, 20 ... Storage case for electronic control devices, 21 ... Front which also serves as an opening part, 30 ... Outward convex part, 35 ... Inward convex part, 38 ... short glass fiber.

Claims (3)

少なくとも一端に開口部を備え回路基板を収納する封筒型で且つ樹脂製の電子制御装置用の収納ケースであって、
この収納ケースは、外表面に外側へ突出する外方凸部を有し、この外方凸部に対応した内方凸部を内表面に内側へ突出するように有していることを特徴とする電子制御装置用の収納ケース。 It is an envelope-type and resin-made storage case for an electronic control device that has an opening at least at one end and stores a circuit board,
The storage case has an outer convex portion projecting outward on the outer surface, and an inner convex portion corresponding to the outer convex portion so as to project inward on the inner surface. A storage case for an electronic control device. 前記収納ケースは、射出成形品であって、前記内方凸部は、ゲートから射出された樹脂材料の流れに沿って配置される縦壁状のリブであることを特徴とする請求項１記載の電子制御装置用の収納ケース。   2. The storage case according to claim 1, wherein the storage case is an injection-molded product, and the inward convex portion is a rib having a vertical wall disposed along the flow of the resin material injected from the gate. A storage case for electronic control devices. 前記樹脂材料は、樹脂にガラスの短繊維が混ぜられていることを特徴とする請求項２記載の電子制御装置用の収納ケース。   The storage case for an electronic control device according to claim 2, wherein the resin material is made of resin mixed with short glass fibers.
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JPH11284366A (en) * 1998-03-27 1999-10-15 Toshiba Corp Cabinet equipment, its molding method, metal molding equipment and portable equipment
JP2000280303A (en) * 1999-03-29 2000-10-10 Seiko Epson Corp Injection-molded case
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