JP5704042B2

JP5704042B2 - Electronic control unit

Info

Publication number: JP5704042B2
Application number: JP2011223339A
Authority: JP
Inventors: 亮金田; 章義小島
Original assignee: Denso Corp
Current assignee: Denso Corp
Priority date: 2011-10-07
Filing date: 2011-10-07
Publication date: 2015-04-22
Anticipated expiration: 2031-10-07
Also published as: JP2013084745A

Description

本発明は、車両などの制御を行うための、回路基板を筐体内部に収容した電子制御装置に関するものである。 The present invention relates to an electronic control device in which a circuit board is accommodated in a housing for controlling a vehicle or the like.

従来の電子制御装置として、例えば特許文献１に開示されたものが知られている。この電子制御装置は、電子部品を実装した回路基板を内部に収容した筐体を備えている。筐体は、下ケースおよび上ケースに分割されており、これらは、鉄やアルミなどの金属、または樹脂で構成されている。 As a conventional electronic control device, for example, one disclosed in Patent Document 1 is known. The electronic control device includes a housing that houses therein a circuit board on which electronic components are mounted. The housing is divided into a lower case and an upper case, which are made of a metal such as iron or aluminum, or a resin.

四角板状に形成された下ケースの隅（主に２箇所）には、台座部がそれぞれ設けられており、回路基板は台座部に載置されている。また、上ケースの天井面の隅には、下ケース側に突出する細長い突起がそれぞれ形成されており、各突起には、ゴム材で構成された弾性部材が取り付けられている。弾性部材は円柱状に形成されており、この弾性部材には、その軸線に沿って延びるとともに弾性部材を貫通する突起挿入孔が設けられている。弾性部材は、突起挿入孔に上ケースの突起が挿入されることにより、上ケースに容易に取り付けられ、上ケースに固定された状態で保持されている。 A pedestal portion is provided at each corner (mainly two places) of the lower case formed in a square plate shape, and the circuit board is placed on the pedestal portion. In addition, elongated protrusions that protrude toward the lower case are formed at corners of the ceiling surface of the upper case, and an elastic member made of a rubber material is attached to each protrusion. The elastic member is formed in a columnar shape, and the elastic member is provided with a protrusion insertion hole extending along the axis and penetrating the elastic member. The elastic member is easily attached to the upper case when the protrusion of the upper case is inserted into the protrusion insertion hole, and is held in a state of being fixed to the upper case.

また、弾性部材および回路基板は、上ケースの天井面と下ケースの台座部によって狭持されており、その結果、弾性部材は、弾性変形しながら回路基板を台座部側へ押圧する。このような弾性部材の弾性変形によって、筐体や回路基板の成形公差や組付け公差が吸収された状態で回路基板が押圧されるので、回路基板と筐体との間の間隔が一定に保持される。 The elastic member and the circuit board are held between the ceiling surface of the upper case and the pedestal portion of the lower case. As a result, the elastic member presses the circuit board toward the pedestal portion side while being elastically deformed. Due to such elastic deformation of the elastic member, the circuit board is pressed in a state where the molding tolerance and assembly tolerance of the casing and the circuit board are absorbed, so that the distance between the circuit board and the casing is kept constant. Is done.

また、上ケースおよび下ケースをねじにより接合する場合に、ねじを締め付けることによってねじを取り付けたねじ締め部をプレス変形させることによって、上記の成形公差や組付け公差を吸収する例もある。 Moreover, when joining an upper case and a lower case with a screw, there also exists an example which absorbs said shaping | molding tolerance and assembly tolerance by carrying out the press deformation | transformation of the screw fastening part which attached the screw by tightening a screw.

特許第４１９６９０４号公報Japanese Patent No. 4196904

上述した上ケースの突起のような細長い形状のものを筐体と一体に成形するには、通常、樹脂やダイカストで筐体を構成する。しかし、電子制御装置の筐体として樹脂を用いた場合、低価格で軽量な電子制御装置を得られるものの、優れた放熱性や耐ノイズ性を確保するには、表面処理などの追加加工が必要となり、その場合、低価格で実現することが困難である。また、ダイカストの筐体を用いた場合、製造コストが比較的、高くなるとともに重量の増大を招きやすく、より軽量で低価格の電子制御装置を得ることは困難である。 In order to form an elongated shape like the projection of the upper case as described above integrally with the casing, the casing is usually made of resin or die casting. However, when resin is used as the housing of the electronic control unit, a low-priced and lightweight electronic control unit can be obtained, but additional processing such as surface treatment is required to ensure excellent heat dissipation and noise resistance. In this case, it is difficult to realize at a low price. When a die-cast housing is used, the manufacturing cost is relatively high and the weight is likely to increase, and it is difficult to obtain a lighter and lower-priced electronic control device.

このような問題を回避するために、例えば金属をプレス成形することによってケースを構成することが考えられるが、プレス成形では微細加工性に劣るため、上述した上ケースの突起のような細長い突起物を成形することは困難であり、成形できたとしても、加工コストの増大を招いてしまう。また、ねじ締め部のプレス変形を利用して成形公差や組付け公差を吸収する場合、変形がねじ締め部だけに止まらず、他の部位も変形させてしまうおそれがあり、その場合、防水性を要するＥＣＵでは防水性を確保できないおそれがある。 In order to avoid such a problem, it is conceivable to form the case by, for example, press-molding a metal. However, the press-molding is inferior in fine workability. Is difficult to form, and even if it can be formed, the processing cost increases. Also, if press tolerance of the screw tightening part is used to absorb the forming tolerance or assembly tolerance, the deformation may not only stop at the screw tightening part, but other parts may also be deformed. There is a possibility that waterproofness cannot be ensured in an ECU that requires.

本発明は、以上のような課題を解決するためになされたものであり、放熱性や耐ノイズ性などの要求される性能を確保しながら、製造コストを抑制することができる電子制御装置を提供することを目的としている。 The present invention has been made to solve the above-described problems, and provides an electronic control device capable of suppressing manufacturing costs while ensuring required performance such as heat dissipation and noise resistance. The purpose is to do.

上記の目的を達成するために、特許請求の範囲に記載の請求項１に係る電子制御装置は、板状の回路基板と、回路基板の一方の面側に配置され、回路基板が接触するように取り付けられた第１ケースと、回路基板の他方の面側に配置され、第１ケースに接合された第２ケースと、を有し、第１および第２ケースの間に回路基板４を収容した筐体と、第２ケースに設けられた押圧部材取付け部と、押圧部材取付け部に取り付けられ、第２ケースが第１ケースに接合された状態で、回路基板とともに第１および第２ケースに狭持されることによって、回路基板を第１ケース側に押圧する押圧部材と、押圧部材を第２ケースに取り付けるときに、押圧部材取付け部との間の空気を排気するための排気手段と、を備え、押圧部材には、排気手段として、押圧部材側排気通路が設けられ、押圧部材取付け部は、第１ケース側に開放する円筒状の凹部を有し、押圧部材は、円柱状に形成され、凹部に嵌合しており、押圧部材側排気通路は、押圧部材が凹部に嵌合するときに、凹部の内側と外側とを連通することを特徴とする。 In order to achieve the above object, an electronic control device according to claim 1 of the claims is arranged on a plate-like circuit board and one surface side of the circuit board so that the circuit board comes into contact therewith. And a second case disposed on the other surface side of the circuit board and joined to the first case, and the circuit board 4 is accommodated between the first and second cases. The first case and the second case together with the circuit board in a state where the second case is joined to the first case. A pressure member that presses the circuit board toward the first case by being sandwiched; and an exhaust means for exhausting air between the pressure member attachment portion when the pressure member is attached to the second case; the provided, the pressing member is, as the exhaust means A pressing member side exhaust passage is provided, the pressing member mounting portion has a cylindrical recess that opens to the first case side, the pressing member is formed in a columnar shape, and is fitted in the recess, and the pressing member side exhaust passage, the pressing member when fitted into the recess, characterized Rukoto through communication between the inside and the outside of the recess.

この電子制御装置によれば、回路基板の一方の面側および他方の面側にそれぞれ配置された第１および第２ケースが互いに接合され、両ケースの間に回路基板が収容される。回路基板は、第１ケースに接触するように取り付けられており、この回路基板は、第２ケースの押圧部材取付け部に取り付けられた押圧部材とともに第１および第２ケースに狭持されている。それにより、回路基板は押圧部材によって第１ケース側に押圧されている。また、押圧部材を取り付ける際には、押圧部材取付け部との間に存在する空気が排気手段によって排気される。 According to this electronic control device, the first and second cases disposed on one surface side and the other surface side of the circuit board are joined to each other, and the circuit board is accommodated between the cases. The circuit board is attached so as to be in contact with the first case, and this circuit board is held between the first and second cases together with the pressing member attached to the pressing member attaching portion of the second case. Thereby, the circuit board is pressed to the first case side by the pressing member. Moreover, when attaching a pressing member, the air which exists between pressing member attachment parts is exhausted by the exhaust means.

以上のように、回路基板は押圧部材によって第１ケース側に押圧されるので、回路基板を第１ケースに確実に接触させること、または成形公差や組付け公差の影響を受けずに両者の間隔を一定に保つことができる。それにより、例えば金属製の第１ケースを用いることによって、回路基板に生じた熱を第１ケースに直接または熱伝導材を経由して伝達させ、第１ケースから効果的に放熱させることができる。 As described above, since the circuit board is pressed toward the first case by the pressing member, the circuit board is reliably brought into contact with the first case, or the distance between the two is not affected by the molding tolerance or the assembly tolerance. Can be kept constant. Thereby, for example, by using the first case made of metal, the heat generated in the circuit board can be transferred to the first case directly or via the heat conductive material, and can be effectively radiated from the first case. .

また、従来の電子制御装置のように突起物を用いることなく、押圧部材を取り付けられるので、少なくとも第２ケースをダイカスト以外で構成することが可能になる。例えば、第２ケースを金属のプレス加工により成形することによって、耐ノイズ性や放熱性を確保しながら、電子制御装置の製造コストを抑制することができる。また、押圧部材と押圧部材取付け部との間の空気が排気手段によって排気されるので、第２ケースに確実に接触した状態で、押圧部材を安定して取り付けることができ、それにより、押圧部材によって押圧された回路基板と第１ケースとの接触を確実に維持することができる。 In addition, since the pressing member can be attached without using a projection as in the conventional electronic control device, it is possible to configure at least the second case other than die casting. For example, by forming the second case by metal pressing, the manufacturing cost of the electronic control device can be suppressed while ensuring noise resistance and heat dissipation. Further, since the air between the pressing member and the pressing member mounting portion is exhausted by the exhaust means, the pressing member can be stably mounted in a state where it is securely in contact with the second case. The contact between the circuit board pressed by the first case and the first case can be reliably maintained.

この電子制御装置によれば、押圧部材側に設けられた押圧部材側排気通路によって、押圧部材を第２ケースに取り付ける際に、第２ケースとの間の空気が排気される。それにより、押圧部材が取り付けられる押圧部材取付け部側の構成を簡素化でき、第２ケースの製造コストを削減することができる。 According to this electronic control device, when the pressing member is attached to the second case, the air between the second case is exhausted by the pressing member side exhaust passage provided on the pressing member side. Thereby, the structure by the side of the press member attachment part to which a press member is attached can be simplified, and the manufacturing cost of a 2nd case can be reduced.

この電子制御装置によれば、円柱状の押圧部材が、押圧部材取付け部の第１ケース側に開放する円筒状の凹部に嵌合することによって、第２ケースに取り付けられている。また、押圧部材を凹部に嵌合させる際、凹部内の空気は、凹部の内側と外側とを連通する押圧部材側排気通路を通過して、凹部から外方に排気される。 According to this electronic control device, the columnar pressing member is attached to the second case by fitting into a cylindrical recess that opens to the first case side of the pressing member mounting portion. Further, when the pressing member is fitted into the recess, the air in the recess passes through the pressing member-side exhaust passage that communicates the inside and the outside of the recess and is exhausted outward from the recess.

このように、円筒状の凹部に円柱状の凹部が嵌合しているので、両者の接触面積をより大きくでき、また、押圧部材側排気通路から凹部との間の空気が排気されるので、押圧部材を隙間なく第２ケースに取り付けることができる。したがって、押圧部材を第２ケースに十分な取付け強度で取り付けることができる。 Thus, since the cylindrical recess is fitted to the cylindrical recess, the contact area between the two can be increased, and the air between the recess from the pressing member side exhaust passage is exhausted, The pressing member can be attached to the second case without a gap. Therefore, the pressing member can be attached to the second case with sufficient attachment strength.

請求項２に係る発明は、請求項１に記載の電子制御装置において、第２ケースの周縁部には、第１ケースと接合するための第１ケースに向かって延びる周壁が形成され、凹部は、周壁よりも第２ケースの内側において周壁に隣接して配置され、凹部の内周面は、周壁の壁面から連続して延びていることを特徴とする。 The invention according to claim 2, the electronic control device according to claim 1, in a peripheral edge portion of the second case, a peripheral wall extending toward the first case for joining the first case is formed, the recess The inner peripheral surface of the recess is disposed adjacent to the peripheral wall inside the second case with respect to the peripheral wall, and extends continuously from the wall surface of the peripheral wall.

この電子制御装置によれば、第２ケースの周縁部に設けられた周壁から内周面が連続して延びるように、円筒状の凹部が周壁に隣接して周壁よりも内側に配置されており、この凹部に押圧部材が嵌合している。周壁は、第１ケースに向かって延びており、それにより、押圧部材を凹部に嵌合させると、押圧部材の外周面を周壁に接触させることができる。したがって、凹部だけでなく、第２ケースの周壁によって押圧部材を支持することができ、押圧部材を第２ケースにより確実に固定することができる。 According to this electronic control device, the cylindrical recess is disposed adjacent to the peripheral wall and inside the peripheral wall so that the inner peripheral surface continuously extends from the peripheral wall provided at the peripheral edge of the second case. The pressing member is fitted in the recess. The peripheral wall extends toward the first case. Thus, when the pressing member is fitted into the recess, the outer peripheral surface of the pressing member can be brought into contact with the peripheral wall. Therefore, the pressing member can be supported not only by the concave portion but also by the peripheral wall of the second case, and the pressing member can be reliably fixed by the second case.

請求項３に係る発明は、請求項１または２に記載の電子制御装置において、押圧部材取付け部は、第２ケースの第１ケースと反対側に切欠き状の段差部を有し、段差部と第２ケースの段差部以外の部分は、第２ケースの外縁間を直線状に延びる境界面によって区分されており、凹部は段差部の第１ケース側に設けられていることを特徴とする。 According to a third aspect of the present invention, in the electronic control device according to the first or second aspect , the pressing member mounting portion has a notch-shaped step portion on the opposite side to the first case of the second case, and the step portion And the second case other than the step portion is divided by a boundary surface extending linearly between the outer edges of the second case, and the concave portion is provided on the first case side of the step portion. .

この電子制御装置によれば、第２ケースの第１ケースと反対側に切欠き状の段差部が設けられている。この段差部と第２ケースの他の部分は、第２ケースの外縁間を直線状に延びる境界面によって区分されており、この切欠き部の第１ケース側に凹部が設けられている。 According to this electronic control device, the notch-shaped step portion is provided on the opposite side of the second case to the first case. The step and the other part of the second case are separated by a boundary surface extending linearly between the outer edges of the second case, and a recess is provided on the first case side of the notch.

この電子制御装置によれば、押圧部材取付け部の段差部と第２ケースの他の部分との境界面が直線状に延びているので、押圧部材取付け部が例えば水などの液体にさらされても、液体は、第２ケースの外縁間を延びる直線状の境界面に沿って外縁まで流動し、外縁から流れ落ちる。したがって、押圧部材取付け部に水などが滞留するのを防止でき、その結果、筐体の腐食を抑制することができ、電子制御装置の耐久性を向上させることができる。 According to this electronic control device, since the boundary surface between the step portion of the pressing member mounting portion and the other part of the second case extends linearly, the pressing member mounting portion is exposed to a liquid such as water. However, the liquid flows to the outer edge along the linear boundary surface extending between the outer edges of the second case, and flows down from the outer edge. Therefore, it is possible to prevent water or the like from staying in the pressing member mounting portion, and as a result, corrosion of the housing can be suppressed, and durability of the electronic control device can be improved.

本発明の第１実施形態に係る電子制御装置を示す（Ａ）平面図、（Ｂ）背面図および（Ｃ）下面図である。1A is a plan view, FIG. 1B is a rear view, and FIG. 1C is a bottom view illustrating the electronic control device according to the first embodiment of the present invention. 図１の電子制御装置の下ケースおよび回路基板を示す平面図である。It is a top view which shows the lower case and circuit board of the electronic control apparatus of FIG. 図１の電子制御装置の（Ａ）押圧部材取付け部付近を示す斜視図および図１（Ａ）の線Ａ−Ａに沿う部分断面図である。It is the perspective view which shows (A) press member attachment part vicinity of the electronic controller of FIG. 1, and the fragmentary sectional view which follows the line AA of FIG. 1 (A). 押圧部材取付け部への押圧部材の（Ａ）取付け前および（Ｂ）取付け後をそれぞれ示す説明図である。It is explanatory drawing which shows each before (A) attachment of the press member to a press member attaching part, and (B) after attachment. 押圧部材の第１の変形例をそれぞれ示す（Ａ）平面図および（Ｂ）正面図と、（Ｃ）第１の変形例の押圧部材を取り付けた状態を示す説明図である。It is explanatory drawing which shows the state which attached the (A) top view and (B) front view which respectively show the 1st modification of a press member, and (C) the press member of the 1st modification. 押圧部材の第２の変形例をそれぞれ示す（Ａ）平面図および（Ｂ）正面図である。It is (A) top view and (B) front view which show the 2nd modification of a pressing member, respectively. 第１実施形態に係る電子制御装置の第１の変形例を示す部分断面図である。It is a fragmentary sectional view showing the 1st modification of an electronic control unit concerning a 1st embodiment. 第１実施形態に係る電子制御装置の第２の変形例をそれぞれ示す（Ａ）部分平面図、（Ｂ）線Ｂ−Ｂに沿う部分断面図、および（Ｃ）線Ｃ−Ｃに沿う部分断面図である。(A) Partial plan view, (B) Partial sectional view taken along line BB, and (C) Partial sectional view taken along line CC, respectively, showing a second modification of the electronic control device according to the first embodiment. FIG. 第２実施形態に係る電子制御装置をそれぞれ示す（Ａ）部分平面図および（Ｂ）線Ｄ−Ｄに沿う部分断面図である。It is the (A) partial top view which shows the electronic control apparatus which concerns on 2nd Embodiment, respectively, and (B) The fragmentary sectional view which follows the line DD. 第３実施形態に係る電子制御装置をそれぞれ示す（Ａ）部分平面図、（Ｂ）線Ｅ−Ｅに沿う部分断面図、および（Ｃ）線Ｆ−Ｆに沿う部分断面図である。It is the (A) partial top view which each shows the electronic control apparatus which concerns on 3rd Embodiment, (B) The fragmentary sectional view which follows the line EE, and (C) The fragmentary sectional view which follows the line FF. 第４実施形態に係る電子制御装置を示す平面図である。It is a top view which shows the electronic control apparatus which concerns on 4th Embodiment. 第４実施形態に係る電子制御装置をそれぞれ示す（Ａ）部分平面図、（Ｂ）線Ｇ−Ｇに沿う部分断面図、および（Ｃ）線Ｈ−Ｈに沿う部分断面図である。(A) Partial top view which respectively shows the electronic control apparatus which concerns on 4th Embodiment, (B) Partial sectional drawing which follows the line GG, (C) Partial sectional drawing which follows the line HH. 第５実施形態に係る電子制御装置をそれぞれ示す（Ａ）部分平面図、（Ｂ）線Ｉ−Ｉに沿う部分断面図、および（Ｃ）線Ｊ−Ｊに沿う部分断面図である。(A) Partial top view which respectively shows the electronic control apparatus which concerns on 5th Embodiment, (B) Partial sectional drawing which follows the line II, (C) Partial sectional drawing which follows the line JJ. 第６実施形態に係る電子制御装置をそれぞれ示す（Ａ）部分平面図、（Ｂ）線Ｋ−Ｋに沿う部分断面図、および（Ｃ）線Ｌ−Ｌに沿う部分断面図である。It is the (A) partial top view which each shows the electronic control apparatus which concerns on 6th Embodiment, (B) The fragmentary sectional view in alignment with line KK, and (C) The fragmentary sectional view in alignment with line LL. 第７実施形態に係る電子制御装置を示す（Ａ）部分平面図、（Ｂ）押圧部材を示す正面図、および（Ｃ）線Ｍ−Ｍに沿う部分断面図である。It is the (A) partial top view which shows the electronic control apparatus which concerns on 7th Embodiment, (B) The front view which shows a press member, and (C) The fragmentary sectional view which follows the line MM. 第８実施形態に係る電子制御装置の（Ａ）押圧部材取付け部付近を示す部分断面図と、（Ｂ）第８実施形態に係る電子制御装置の変形例を示す部分断面図である。It is the fragmentary sectional view which shows the (A) press member attachment part vicinity of the electronic control apparatus which concerns on 8th Embodiment, and (B) the modification of the electronic control apparatus which concerns on 8th Embodiment. 第９実施形態に係る電子制御装置の（Ａ）押圧部材取付け部付近を示す部分断面図と、（Ｂ）第９実施形態に係る電子制御装置の変形例を示す部分断面図である。It is the fragmentary sectional view which shows the (A) press member attachment part vicinity of the electronic control apparatus which concerns on 9th Embodiment, and (B) the partial sectional view which shows the modification of the electronic control apparatus which concerns on 9th Embodiment.

以下、本発明の第１実施形態に係る電子制御装置１について、図面を参照しながら説明する。この電子制御装置１は、例えば車両（図示せず）のエンジンルームに配置され、運転者による運転操作などに応じて、エンジン（図示せず）の制御を実行するものである。 Hereinafter, an electronic control device 1 according to a first embodiment of the present invention will be described with reference to the drawings. The electronic control device 1 is disposed, for example, in an engine room of a vehicle (not shown), and executes control of an engine (not shown) according to a driving operation by a driver.

図１に示すように、電子制御装置１は、筐体Ｈと、コネクタ４ａを有する回路基板４を備えている。筐体Ｈは、回路基板４の厚さ方向（上下方向）に分割された下ケース２（第１ケース）および上ケース３（第２ケース）によって構成されており、回路基板４のほぼ全体が、上ケース３および下ケース２によって取り囲まれたスペースに収容されている。なお、便宜上、図１（Ａ）の上側を電子制御装置１の「前」、下側を「後」として、また、右側を電子制御装置１の「右」、左側を「左」として、以下の説明を行う。 As shown in FIG. 1, the electronic control device 1 includes a housing H and a circuit board 4 having a connector 4a. The housing H is composed of a lower case 2 (first case) and an upper case 3 (second case) which are divided in the thickness direction (vertical direction) of the circuit board 4, and almost the entire circuit board 4 is formed. The space is enclosed by the upper case 3 and the lower case 2. For convenience, the upper side of FIG. 1A is “front”, the lower side is “rear”, the right side is “right”, and the left side is “left”. Will be explained.

図２に示すように、回路基板４は、矩形の板状に形成されており、コネクタ４ａは回路基板４の前端部に取り付けられている。この回路基板４の両面には、多数の電子部品（図示せず）が実装されている。コネクタ４ａは、回路基板４の各種の電子部品や回路を駆動させるための電力を供給するとともに、各種の信号の送受信を行うために、外部コネクタ（図示せず）を接続するためのものである。また、回路基板４の後側の左右の隅部には、接地用ランド４ｂ、４ｂがそれぞれ設けられている。各接地用ランド４ｂは、回路基板４の下ケース２側に形成されており、回路基板４に設けられた配線と同じ銅などの導体で構成されていて、回路基板４の各種の回路に接続されている。 As shown in FIG. 2, the circuit board 4 is formed in a rectangular plate shape, and the connector 4 a is attached to the front end portion of the circuit board 4. A large number of electronic components (not shown) are mounted on both surfaces of the circuit board 4. The connector 4a supplies power for driving various electronic components and circuits on the circuit board 4 and connects an external connector (not shown) in order to transmit and receive various signals. . Further, ground lands 4b and 4b are provided at the left and right corners on the rear side of the circuit board 4, respectively. Each grounding land 4 b is formed on the lower case 2 side of the circuit board 4, is composed of the same conductor as copper and the like provided on the circuit board 4, and is connected to various circuits on the circuit board 4. Has been.

下ケース２は、アルミダイカストで一体に形成されており、底板２ａと、この底板２ａの外周縁のうち、コネクタ４ａが露出する前側の一縁を除いた外周縁に設けられたフランジ部２ｂを有している。フランジ部２ｂは、底板２ａから外方に延びており、図３（Ｂ）に示すように、上ケース側に開放し、底板２ａの外周縁に沿って延びる溝２ｄを有している。また、フランジ部２ｂよりも内側の底板２ａの左右の隅部には、回路基板４を下方から支持するための２つの台座２ｃ、２ｃがそれぞれ設けられており、各台座２ｃは、底板２ａの他の部位よりも厚く形成され、その上面と底板２ａとの間に段差が生じている。 The lower case 2 is integrally formed by aluminum die casting, and includes a bottom plate 2a and a flange portion 2b provided on an outer peripheral edge of the outer peripheral edge of the bottom plate 2a except for one edge on the front side where the connector 4a is exposed. Have. The flange portion 2b extends outward from the bottom plate 2a, and has a groove 2d that opens to the upper case side and extends along the outer peripheral edge of the bottom plate 2a, as shown in FIG. 3B. In addition, two pedestals 2c and 2c for supporting the circuit board 4 from below are provided at the left and right corners of the bottom plate 2a inside the flange portion 2b, and each pedestal 2c is provided on the bottom plate 2a. It is formed thicker than other parts, and a step is generated between its upper surface and the bottom plate 2a.

上ケース３は、例えば鋼板をプレス成形することで形成されており、ほぼ矩形状の天板３ｄと、コネクタ４ａが露出する前側の一縁を除いて、天板３ｄの外縁から下ケース２に向かって延びる周壁３ａとを有している。周壁３ａの隅部の壁面は、湾曲して延びる曲面になっており、また、周壁３ａの下端部には、外方に延びるフランジ部３ｂが設けられている。周壁３ａの屈曲した下端部は下ケース２の溝２ｄに進入しており、上下のフランジ部３ｂ、２ｂ同士が当接した状態で、フランジ部３ｂ、２ｂに螺合する計４つのねじ３ｅによって、上ケース３および下ケース２が互いに接合されている。 The upper case 3 is formed, for example, by pressing a steel plate. The upper case 3 is formed from the outer edge of the top plate 3d to the lower case 2 except for a substantially rectangular top plate 3d and one edge on the front side where the connector 4a is exposed. And a peripheral wall 3a extending toward the front. The wall surface at the corner of the peripheral wall 3a is a curved surface extending in a curved manner, and a flange portion 3b extending outward is provided at the lower end of the peripheral wall 3a. The bent lower end portion of the peripheral wall 3a has entered the groove 2d of the lower case 2, and the upper and lower flange portions 3b, 2b are in contact with each other by a total of four screws 3e screwed to the flange portions 3b, 2b. The upper case 3 and the lower case 2 are joined to each other.

上ケース３の周壁３ａよりも内側の左右の隅部には、押圧部材取付け部１０、１０がそれぞれ設けられている。図３（Ａ）は、押圧部材取付け部１０およびその近傍を、上下反転させて示しており、同図に示すように、押圧部材取付け部１０は、天板３ｄとの間に段差を設けて、より下ケース２に近い高さ位置に形成された段差部１１を有している。この段差部１１によって、押圧部材取付け部１０は、上ケース３の上方から見て、天板３ｄの隅部に切欠き状に構成されている。 At the left and right corners on the inner side of the peripheral wall 3a of the upper case 3, pressing member mounting portions 10 and 10 are provided, respectively. FIG. 3A shows the pressing member mounting portion 10 and its vicinity upside down. As shown in FIG. 3, the pressing member mounting portion 10 has a step between the top plate 3d. The step portion 11 is formed at a height position closer to the lower case 2. By this step portion 11, the pressing member mounting portion 10 is formed in a notch shape at the corner of the top plate 3 d when viewed from above the upper case 3.

また、段差部１１の中央には、下方の下ケース２側に開口する凹部１２が形成されている。上述したように、上ケース３はプレス成型されているので、凹部１２は、上方から見たときには段差部１１から突出している。また、凹部１２は、所定の径および深さを有する円筒状に形成されており、この凹部１２には、押圧部材５が嵌合している。 A recess 12 is formed at the center of the step 11 so as to open to the lower case 2 side. As described above, since the upper case 3 is press-molded, the concave portion 12 protrudes from the step portion 11 when viewed from above. The recess 12 is formed in a cylindrical shape having a predetermined diameter and depth, and the pressing member 5 is fitted in the recess 12.

押圧部材５は、ゴムなどの弾性体で円柱状に構成されており、凹部１２の径よりも若干、大きな径を有している。また、この押圧部材５には、断面円形の排気孔５ａ（排気手段、押圧部材側排気通路）が形成されている。この排気孔５ａは、押圧部材５の軸線に沿って延びるとともに押圧部材５を貫通している。 The pressing member 5 is formed in a cylindrical shape with an elastic body such as rubber, and has a diameter slightly larger than the diameter of the recess 12. The pressing member 5 has an exhaust hole 5a (exhaust means, pressing member side exhaust passage) having a circular cross section. The exhaust hole 5 a extends along the axis of the pressing member 5 and penetrates the pressing member 5.

図４（Ａ）に示すように、押圧部材５を押圧部材取付け部１０に取り付けるときには、押圧部材５の一方の端部を凹部１２に向かって押圧する。それにより、押圧部材５の他方の端部が、弾性を有することにより若干、圧縮された状態で凹部１２に嵌合する。その際、凹部１２の内側と外側とは、押圧部材５の排気孔５ａによって連通しているので、押圧部材５と凹部１２の間に存在する空気は、押圧部材５が凹部１２に進入するに従って、同図（Ｂ）に矢印で示すように、排気孔５ａを通過して凹部１２の外に排出される。それにより、押圧部材５は、凹部１２の天井面との間に隙間を生じることなく、凹部１２に密着した状態で取り付けられる。 As shown in FIG. 4A, when the pressing member 5 is attached to the pressing member mounting portion 10, one end of the pressing member 5 is pressed toward the recess 12. As a result, the other end of the pressing member 5 is fitted into the recess 12 in a slightly compressed state due to its elasticity. At that time, since the inside and the outside of the recess 12 communicate with each other through the exhaust hole 5 a of the pressing member 5, the air existing between the pressing member 5 and the recess 12 moves as the pressing member 5 enters the recess 12. As shown by the arrow in FIG. 5B, the air passes through the exhaust hole 5a and is discharged out of the recess 12. Thereby, the pressing member 5 is attached in a state of being in close contact with the recess 12 without causing a gap between the pressing member 5 and the ceiling surface of the recess 12.

上ケース３は、左右の押圧部材取付け部１０、１０に押圧部材５、５をそれぞれ取り付けた後、下ケース２に接合される。また、上述した回路基板４は、上ケース３と下ケース２の間に構成された空間に収容されており、回路基板４に取り付けられたコネクタ４ａは、上ケース３および下ケース２によって狭持された状態で、筐体Ｈの前端部の開口から露出している。 The upper case 3 is joined to the lower case 2 after the pressing members 5 and 5 are respectively attached to the left and right pressing member attaching portions 10 and 10. The circuit board 4 described above is housed in a space formed between the upper case 3 and the lower case 2, and the connector 4 a attached to the circuit board 4 is held between the upper case 3 and the lower case 2. In this state, it is exposed from the opening at the front end of the housing H.

図３（Ｂ）に示すように、回路基板４は、下ケース２の台座２ｃと上ケース３に取り付けられた押圧部材５によって狭持されている。具体的には、回路基板４の前述した左右の接地用ランド４ｂ、４ｂが、下ケース２の左右の台座２ｃ、２ｃにそれぞれ接触するとともに、回路基板４の接地用ランド４ｂと反対側の面に押圧部材５が接触しており、回路基板４は、接地用ランド４ｂを介して、押圧部材５によって台座２ｃに押圧されている。これにより、回路基板４の各種の回路の接地が図られている。 As shown in FIG. 3B, the circuit board 4 is sandwiched between the base 2 c of the lower case 2 and the pressing member 5 attached to the upper case 3. Specifically, the left and right ground lands 4b and 4b of the circuit board 4 are in contact with the left and right pedestals 2c and 2c of the lower case 2, respectively, and the surface of the circuit board 4 opposite to the ground lands 4b. The circuit board 4 is pressed against the pedestal 2c by the pressing member 5 through the grounding land 4b. As a result, various circuits on the circuit board 4 are grounded.

また、回路基板４と底板２ａの間には、熱伝導材Ｃが設けられている。この熱伝導材Ｃは、例えば放熱ゲルや放熱グリスなどで構成されており、回路基板４の発熱量の大きな部位、および底板２ａの双方に接触するように充填されている。回路基板４の各種の回路が駆動されるのに伴って生じた熱は、熱伝導材Ｃによって底板２ａに、ひいては下ケース２全体に伝達されることによって、回路基板４からの放熱が行われる。 Further, a heat conductive material C is provided between the circuit board 4 and the bottom plate 2a. The heat conductive material C is made of, for example, heat radiating gel or heat radiating grease, and is filled so as to be in contact with both the portion of the circuit board 4 where the heat generation amount is large and the bottom plate 2a. The heat generated as the various circuits on the circuit board 4 are driven is transferred to the bottom plate 2a by the heat conductive material C, and eventually to the entire lower case 2, whereby heat is radiated from the circuit board 4. .

以上のように、第１実施形態に係る電子制御装置１によれば、ダイカスト成形により下ケース２が形成され、鋼板のプレス成型により上ケース３が形成されているので、双方をダイカスト成形する場合と比較して、耐ノイズ性や放熱性を確保しながら、電子制御装置１の製造コストを削減することができる。 As described above, according to the electronic control device 1 according to the first embodiment, the lower case 2 is formed by die casting, and the upper case 3 is formed by press forming of a steel plate. As compared with the above, the manufacturing cost of the electronic control device 1 can be reduced while ensuring noise resistance and heat dissipation.

また、押圧部材５の取付けの際、凹部１２との間の空気が排気孔５ａから排気されるので、上ケース３に隙間なく確実に接触した状態で、押圧部材５を安定して取り付けることができ、それにより、押圧部材５によって押圧された回路基板４と下ケース２との接触を確実に維持することができる。したがって、回路基板４と底板２ａの間の間隔が一定に保持され、回路基板４の熱伝導材Ｃを介した底板２ａとの接触が維持される。その結果、熱伝導材Ｃによる底板２ａへの熱の伝達を安定して行うことができ、下ケース２から効果的に放熱させることができるので、回路基板４の各種の回路を安定して駆動することができる。 Further, when the pressing member 5 is attached, the air between the concave portion 12 is exhausted from the exhaust hole 5a, so that the pressing member 5 can be stably attached in a state where it is reliably in contact with the upper case 3 without a gap. Thus, contact between the circuit board 4 pressed by the pressing member 5 and the lower case 2 can be reliably maintained. Therefore, the space | interval between the circuit board 4 and the baseplate 2a is kept constant, and the contact with the baseplate 2a through the heat conductive material C of the circuit board 4 is maintained. As a result, heat transfer to the bottom plate 2a by the heat conductive material C can be performed stably, and heat can be effectively radiated from the lower case 2, so that various circuits on the circuit board 4 can be driven stably. can do.

また、押圧部材５側に排気孔５ａが設けられていることにより、押圧部材取付け部１０には単純に凹部１２を設けるだけよいので、上ケース３の構成を簡素化でき、上ケース３をプレス成形で容易に形成することができる。 Further, since the exhaust hole 5a is provided on the pressing member 5 side, the pressing member mounting portion 10 can be simply provided with the recess 12, so that the configuration of the upper case 3 can be simplified and the upper case 3 is pressed. It can be easily formed by molding.

図５は、前述した押圧部材５の第１の変形例を示している。同図に示すように、この第１の変形例による押圧部材６は、押圧部材５と同様に、全体として円筒状に形成されている。また、この押圧部材６には、押圧部材５の排気孔５ａに代えて排気溝６ａが形成されている。この排気溝６ａは、断面が扇形に構成され、押圧部材６の長さ方向の中央から一方の端面まで延びており、一方の端面に開放している。また、排気溝６ａの長さＨは、押圧部材取付け部１０の凹部１２の深さｈよりも大きく設定されている。 FIG. 5 shows a first modification of the pressing member 5 described above. As shown in the figure, the pressing member 6 according to the first modification is formed in a cylindrical shape as a whole, like the pressing member 5. The pressing member 6 is formed with an exhaust groove 6 a instead of the exhaust hole 5 a of the pressing member 5. The exhaust groove 6a has a fan-shaped cross section, extends from the center in the length direction of the pressing member 6 to one end surface, and is open to one end surface. Further, the length H of the exhaust groove 6 a is set to be greater than the depth h of the recess 12 of the pressing member mounting portion 10.

このような第１の変形例による押圧部材６を押圧部材取付け部１０に取り付けるときには、前述した押圧部材５と同様に、一方の端部を凹部１２に向かって押圧することにより、排気溝６ａが開口する側の端部を凹部１２に嵌合させる。その際、凹部１２との間の空気が、排気溝６ａを通過して凹部１２の外に排気されることによって、押圧部材６は、凹部１２との間に隙間を生じることなく、凹部１２に取り付けられる。上述したように、排気溝６ａの長さＨは凹部１２の深さｈよりも大きいので、両者１２，６の間の空気は、凹部１２の外に支障なく排出される。 When the pressing member 6 according to the first modified example is attached to the pressing member mounting portion 10, the exhaust groove 6a is formed by pressing one end portion toward the concave portion 12 in the same manner as the pressing member 5 described above. The end on the opening side is fitted into the recess 12. At that time, the air between the concave portion 12 passes through the exhaust groove 6 a and is exhausted to the outside of the concave portion 12, so that the pressing member 6 does not create a gap between the concave portion 12 and the concave portion 12. It is attached. As described above, since the length H of the exhaust groove 6a is larger than the depth h of the recess 12, the air between the both 12 and 6 is discharged out of the recess 12 without any trouble.

図６は、押圧部材５の第２の変形例を示している。同図に示すように、この第２の変形例による押圧部材７は、押圧部材５と同様に、全体として円筒状に形成されており、押圧部材５の排気孔５ａに代えて、排気溝７ａを有している。この排気溝７ａは、第１の変形例の排気溝６ａと同様、扇形の断面形状を有しており、押圧部材５の長さ方向にわたって延びていて、両端面に開放している。以上のような押圧部材７を凹部１２に取り付ける際には、上述した押圧部材５，６と同様に、一端部を凹部１２に向かって押圧することにより他端部を凹部１２に嵌合させ、その際、凹部１２との間の空気が、排気溝７ａを通して外に排気される。それにより、押圧部材７は、凹部１２に密着して押圧部材取付け部１０に取り付けられる。 FIG. 6 shows a second modification of the pressing member 5. As shown in the figure, the pressing member 7 according to the second modified example is formed in a cylindrical shape as a whole like the pressing member 5, and is replaced with an exhaust groove 7 a instead of the exhaust hole 5 a of the pressing member 5. have. This exhaust groove 7a has a fan-like cross-sectional shape, like the exhaust groove 6a of the first modification, extends in the length direction of the pressing member 5, and is open to both end faces. When attaching the pressing member 7 as described above to the recess 12, like the pressing members 5 and 6 described above, the other end is fitted into the recess 12 by pressing one end toward the recess 12, At that time, the air between the recess 12 is exhausted to the outside through the exhaust groove 7a. As a result, the pressing member 7 is attached to the pressing member mounting portion 10 in close contact with the recess 12.

以上のように、排気溝６ａおよび７ａをそれぞれ形成しただけの、単純な形状を有する押圧部材６または７を用いた場合でも、上述した第１実施形態と同様の効果を得ることができる。 As described above, even when the pressing member 6 or 7 having a simple shape in which the exhaust grooves 6a and 7a are formed, the same effects as those in the first embodiment described above can be obtained.

図７は、前述した第１実施．形態に係る電子制御装置１の第１の変形例に係る電子制御装置１ａを示している。この電子制御装置１ａは、電子制御装置１と比較して、押圧部材取付け部の構成が主に異なっている。以下、第１の変形例に係る電子制御装置１ａについて、電子制御装置１と共通する構成要素については共通の符号を用い、電子制御装置１との差異を中心として説明する。 FIG. 7 shows the first embodiment described above. The electronic control apparatus 1a which concerns on the 1st modification of the electronic control apparatus 1 which concerns on a form is shown. The electronic control device 1a is mainly different from the electronic control device 1 in the configuration of the pressing member mounting portion. Hereinafter, the electronic control device 1a according to the first modified example will be described focusing on differences from the electronic control device 1 using common reference numerals for components common to the electronic control device 1.

同図に示すように、本変形例による電子制御装置は、押圧部材取付け部１０に代えて押圧部材取付け部２０を有している。この押圧部材取付け部２０では、その段差部２１が、第１実施形態の段差部１１と比較して、より低い高さ位置に、すなわち下ケース２により近い位置に設けられており、段差部２１と下ケース２の台座２ｃとの間の間隔が、より狭くなっている。また、この狭くなった間隔に応じて、排気孔５ｃを有し、押圧部材５よりも短い押圧部材５ｂが用いられている。また、段差部２１がより低い高さ位置に配置されたことに伴い、凹部２２は天板３ｄよりも低い高さ位置に配置されている。他の構成は、前述した第１実施形態に係る電子制御装置１と同様である。 As shown in the figure, the electronic control apparatus according to this modification has a pressing member mounting portion 20 instead of the pressing member mounting portion 10. In the pressing member mounting portion 20, the step portion 21 is provided at a lower height position than the step portion 11 of the first embodiment, that is, a position closer to the lower case 2. And the base 2c of the lower case 2 are narrower. Further, a pressing member 5 b having an exhaust hole 5 c and shorter than the pressing member 5 is used according to the narrowed interval. Moreover, the recessed part 22 is arrange | positioned in the height position lower than the top plate 3d with the step part 21 being arrange | positioned in a lower height position. Other configurations are the same as those of the electronic control device 1 according to the first embodiment described above.

以上のように、本変形例による電子制御装置１ａによれば、凹部２２が天板３ｄよりも低い高さ位置に配置されている。したがって、例えば上ケース３側を平坦な面に接地するように電子制御装置１ａを配置した場合、平坦な接地面と凹部２２との間に間隙が生じるので、接地面の振動などが押圧部材５ｂへ直接、伝達されることを回避できる。その結果、押圧部材５ｂの変形や凹部２２からの脱落の発生を抑制でき、回路基板４を下ケース２側に確実に押圧することができる。 As described above, according to the electronic control device 1a according to the present modification, the recess 22 is disposed at a lower height than the top plate 3d. Therefore, for example, when the electronic control device 1a is arranged so that the upper case 3 side is grounded to a flat surface, a gap is generated between the flat ground surface and the recess 22, so that the vibration of the ground surface is caused by the pressing member 5b. It is possible to avoid being transmitted directly to. As a result, it is possible to suppress the deformation of the pressing member 5b and the drop-off from the recess 22, and the circuit board 4 can be reliably pressed to the lower case 2 side.

図８は、第１実施形態に係る電子制御装置１の第２の変形例を示している。この電子制御装置１ｂもまた、第１実施形態に係る電子制御装置１と比較して、押圧部材取付け部の構成が主に異なっている。以下、本変形例に係る電子制御装置１ｂについて、電子制御装置１と共通する構成要素については共通の符号を用い、電子制御装置１との差異を中心として説明する。 FIG. 8 shows a second modification of the electronic control device 1 according to the first embodiment. The electronic control device 1b is also mainly different from the electronic control device 1 according to the first embodiment in the configuration of the pressing member mounting portion. Hereinafter, the electronic control device 1b according to the present modification will be described focusing on differences from the electronic control device 1 using common reference numerals for components common to the electronic control device 1.

同図に示すように、本変形例による電子制御装置１ｂは、押圧部材取付け部３０を有している。前述した第１実施形態の押圧部材取付け部１０では、段差部１１の中央に凹部１２が設けられていたのに対し、本変形例では、同図（Ａ）に示すように、段差部３１の中央から外方にずらして周壁３ａの湾曲する隅部に隣接するように、凹部３２が設けられている。これにより、同図（Ｃ）に示すように、周壁３ａの曲面状の壁面と、凹部３２の周壁３ａに隣接する部位（以下、「隣接部位」という）の内周面とが、上下方向に連続して延びている。これにより、隣接部位の近傍において、押圧部材５は、他の部位よりも上下方向により長い範囲で、凹部３２および周壁３ａの双方に接触している。他の構成は、前述した第１実施形態に係る電子制御装置１と同様である。 As shown in the figure, the electronic control device 1b according to this modification has a pressing member mounting portion 30. In the pressing member mounting portion 10 of the first embodiment described above, the concave portion 12 is provided in the center of the step portion 11, whereas in this modification, as shown in FIG. A recess 32 is provided so as to be shifted outward from the center and adjacent to a curved corner of the peripheral wall 3a. As a result, as shown in FIG. 5C, the curved wall surface of the peripheral wall 3a and the inner peripheral surface of the portion adjacent to the peripheral wall 3a of the recess 32 (hereinafter referred to as “adjacent portion”) are vertically aligned. It extends continuously. Thereby, in the vicinity of an adjacent site | part, the press member 5 is contacting both the recessed part 32 and the surrounding wall 3a in the range longer than the other site | part in the up-down direction. Other configurations are the same as those of the electronic control device 1 according to the first embodiment described above.

以上のように、本変形例による電子制御装置１ｂによれば、押圧部材５は、凹部３２の内周面および周壁３ａの壁面の双方に接触しているので、特に、筐体Ｈの中央から外方に向かって押圧部材５に作用する応力に対し、押圧部材５を、凹部３２の内周面および周壁３ａの壁面によって確実に支持して固定することができる。 As described above, according to the electronic control device 1b according to this modification, the pressing member 5 is in contact with both the inner peripheral surface of the recess 32 and the wall surface of the peripheral wall 3a. With respect to the stress acting on the pressing member 5 toward the outside, the pressing member 5 can be reliably supported and fixed by the inner peripheral surface of the recess 32 and the wall surface of the peripheral wall 3a.

図９は、第２実施形態に係る電子制御装置１ｃを示している。この電子制御装置１ｃもまた、第１実施形態に係る電子制御装置１と比較して、押圧部材取付け部の構成が主に異なっている。以下、第２実施形態に係る電子制御装置１ｃについて、電子制御装置１と共通する構成要素については共通の符号を用い、電子制御装置１との差異を中心として説明する。 FIG. 9 shows an electronic control device 1c according to the second embodiment. This electronic control device 1c is also mainly different from the electronic control device 1 according to the first embodiment in the configuration of the pressing member mounting portion. Hereinafter, the electronic control device 1c according to the second embodiment will be described using the same reference numerals for components common to the electronic control device 1 and focusing on differences from the electronic control device 1.

同図に示すように、本実施形態による電子制御装置１ｃは、押圧部材取付け部４０を有している。この押圧部材取付け部４０では、同図（Ａ）に示すように、上述した第２の変形例と同様、上ケース３の周壁３ａに隣接して凹部４２が設けられている。これにより、同図（Ｂ）に示すように、凹部４２の隣接部位近傍では、押圧部材５は、他の部位よりも上下方向により長い範囲で、凹部４２および周壁３ａに接触している。 As shown in the figure, the electronic control device 1 c according to the present embodiment has a pressing member mounting portion 40. In the pressing member mounting portion 40, as shown in FIG. 5A, a recess 42 is provided adjacent to the peripheral wall 3a of the upper case 3 as in the second modification described above. As a result, as shown in FIG. 5B, in the vicinity of the adjacent portion of the recess 42, the pressing member 5 is in contact with the recess 42 and the peripheral wall 3a in a range longer than the other portions in the vertical direction.

また、段差部４１と天板３ｄとの境界面４３が直線状に延びており、この境界面４３は、天板３ｄの後側の外縁と右または左側の外縁との間にわたって斜めに延びている。他の構成は、前述した第１実施形態に係る電子制御装置１と同様である。 In addition, a boundary surface 43 between the step portion 41 and the top plate 3d extends linearly, and this boundary surface 43 extends obliquely between the rear outer edge of the top plate 3d and the right or left outer edge. Yes. Other configurations are the same as those of the electronic control device 1 according to the first embodiment described above.

以上のように、第２実施形態に係る電子制御装置１ｃによれば、押圧部材取付け部４０と第２ケース３の天板３ｄとの境界面４３が直線状に延びているので、押圧部材取付け部４０が例えば水などにさらされても、水は、境界面４３に沿って天板３ｄの外縁まで流動し、外縁から流れ落ちるので、押圧部材取付け部４０に水などが滞留するのを防止することができる。その結果、筐体Ｈの腐食を抑制できるので、電子制御装置１ｃの耐久性を向上させることができる。 As described above, according to the electronic control device 1c according to the second embodiment, the boundary surface 43 between the pressing member mounting portion 40 and the top plate 3d of the second case 3 extends in a straight line. Even if the portion 40 is exposed to water, for example, the water flows along the boundary surface 43 to the outer edge of the top plate 3d and flows down from the outer edge, so that water or the like is prevented from staying in the pressing member mounting portion 40. be able to. As a result, since corrosion of the housing | casing H can be suppressed, durability of the electronic control apparatus 1c can be improved.

図１０は、第３実施形態に係る電子制御装置１ｄを示している。この電子制御装置１ｄもまた、第１実施形態に係る電子制御装置１と比較して、押圧部材取付け部の構成が主に異なっている。以下、第３実施形態に係る電子制御装置１ｄについて、電子制御装置１と共通する構成要素については共通の符号を用い、電子制御装置１との差異を中心として説明する。 FIG. 10 shows an electronic control apparatus 1d according to the third embodiment. This electronic control device 1d also differs from the electronic control device 1 according to the first embodiment mainly in the configuration of the pressing member mounting portion. Hereinafter, the electronic control device 1d according to the third embodiment will be described using the same reference numerals for components common to the electronic control device 1 and focusing on differences from the electronic control device 1.

同図に示すように、本実施形態に係る電子制御装置１ｄは、押圧部材取付け部１０および押圧部材５に代えて押圧部材取付け部５０および押圧部材８を有している。本実施形態の凹部５２は、同図（Ａ）に示すように、上述した第２の変形例と同様、上ケース３の周壁３ａに隣接して設けられている。これにより、同図（Ｃ）に示すように、凹部５２の隣接部位近傍では、押圧部材８は、他の部位よりも上下方向により長い範囲で、凹部５２および周壁３ａに接触している。 As shown in the figure, the electronic control device 1 d according to the present embodiment includes a pressing member mounting portion 50 and a pressing member 8 instead of the pressing member mounting portion 10 and the pressing member 5. The recessed part 52 of this embodiment is provided adjacent to the surrounding wall 3a of the upper case 3 like the 2nd modification mentioned above, as shown to the same figure (A). As a result, as shown in FIG. 5C, in the vicinity of the adjacent portion of the recess 52, the pressing member 8 is in contact with the recess 52 and the peripheral wall 3a in a range longer than the other portions in the vertical direction.

また、凹部５２の隣接部位と反対側の部位が開放されており、これにより、段差部５１は２つに分割されており、凹部５２の天井面と天板３ｄの下面とが連続して延びている。また、押圧部材８は、このような凹部５２に取り付けられており、第１実施形態の押圧部材５と同様、ゴム材によって構成され、押圧部材５と異なり、中実の円柱状に形成されている。 Moreover, the site | part on the opposite side to the adjacent site | part of the recessed part 52 is open | released, Thereby, the level | step-difference part 51 is divided | segmented into two, and the ceiling surface of the recessed part 52 and the lower surface of the top plate 3d extend continuously. ing. Moreover, the pressing member 8 is attached to such a recessed part 52, is comprised with a rubber material like the pressing member 5 of 1st Embodiment, and unlike the pressing member 5, it is formed in the solid column shape. Yes.

押圧部材８は、第１実施形態と同様、凹部５２に向かって押圧されることにより、一端部が凹部５２に挿入され、凹部５２に嵌合した状態で取り付けられる。その際、押圧部材８と凹部５２との間の空気は、分割された段差部５１、５１の間の間隙を通過して排気される。すなわち、この間隙が上ケース３側の排気通路として用いられるので、押圧部材８は、凹部５２に隙間なく取り付けられる。他の構成は、前述した第１実施形態に係る電子制御装置１と同様である。 As in the first embodiment, the pressing member 8 is attached in a state where one end is inserted into the recess 52 and fitted into the recess 52 by being pressed toward the recess 52. At that time, the air between the pressing member 8 and the recess 52 passes through the gap between the divided step portions 51 and 51 and is exhausted. That is, since this gap is used as an exhaust passage on the upper case 3 side, the pressing member 8 is attached to the recess 52 without any gap. Other configurations are the same as those of the electronic control device 1 according to the first embodiment described above.

以上のように、第３実施形態に係る電子制御装置１ｄによれば、上ケース３側の段差部５１，５１の間の間隙が、ケース側排気通路として機能し、押圧部材８を第２ケースに取り付ける際に、第２ケース３との間の空気が排気される。したがって、単純な円柱状の押圧部材８を用いることができ、押圧部材８の製造コストを削減することができる。 As described above, according to the electronic control unit 1d according to the third embodiment, the gap between the step portions 51, 51 on the upper case 3 side functions as a case-side exhaust passage, and the pressing member 8 is connected to the second case. When being attached to, the air between the second case 3 is exhausted. Therefore, a simple cylindrical pressing member 8 can be used, and the manufacturing cost of the pressing member 8 can be reduced.

図１１および図１２は、第４実施形態に係る電子制御装置１ｅを示している。この電子制御装置１ｅもまた、第１実施形態に係る電子制御装置１と比較して、押圧部材取付け部の構成が主に異なっている。以下、第４実施形態に係る電子制御装置について、電子制御装置１と共通する構成要素については共通の符号を用い、電子制御装置１との差異を中心として説明する。 11 and 12 show an electronic control device 1e according to the fourth embodiment. The electronic control device 1e is also mainly different from the electronic control device 1 according to the first embodiment in the configuration of the pressing member mounting portion. Hereinafter, the electronic control device according to the fourth embodiment will be described using the same reference numerals for components common to the electronic control device 1 and focusing on differences from the electronic control device 1.

図１１に示すように、上ケース３の天板３ｄの後部には、表示用凹部３ｃが形成されている。この表示用凹部３ｃは、例えば、電子制御装置１ｅの名称や仕様など、他の電子制御装置と識別するための情報を表記したラベルＬなどを貼り付けて表示するために設けられており、天板３ｄの左右方向のほぼ全体にわたって延びている。また、表示用凹部３ｃの後側の左右の隅部では、凹部３ｃと天板３ｄとの境界が斜めに延びている。 As shown in FIG. 11, a display recess 3 c is formed in the rear part of the top plate 3 d of the upper case 3. The display recess 3c is provided, for example, for attaching and displaying a label L indicating information for identifying the electronic control device 1e such as the name and specification of the electronic control device 1e. It extends over substantially the entire left-right direction of the plate 3d. In addition, at the left and right corners on the rear side of the display recess 3c, the boundary between the recess 3c and the top plate 3d extends obliquely.

また、本実施形態の電子制御装置１ｅは、押圧部材取付け部６０を備えている。図１２（Ａ）〜（Ｃ）に示すように、押圧部材取付部６０は、凹部３ｃと天板３ｄの境界の一部を構成する境界壁６１を有しており、この境界壁６１は、周壁３ａの隅部と対向するように斜めに延びている。押圧部材８は、この境界壁６１と周壁３ａの間に取り付けられている。 In addition, the electronic control device 1e of the present embodiment includes a pressing member mounting portion 60. As shown in FIGS. 12A to 12C, the pressing member mounting portion 60 has a boundary wall 61 that constitutes a part of the boundary between the recess 3c and the top plate 3d. It extends diagonally so as to face the corner of the peripheral wall 3a. The pressing member 8 is attached between the boundary wall 61 and the peripheral wall 3a.

具体的には、表示用凹部３ｃを設けたことにより構成された境界壁６１と周壁３ａの湾曲した隅部との間の溝６２に、押圧部材８の一端部が係合し、境界壁６１および周壁３ａによって狭持されている。すなわち、周壁３ａ、境界壁６１および隅部付近の天板３ｄと、これらによって構成された溝６２によって、押圧部材取付け部６０が構成されている。他の構成は、前述した第１実施形態に係る電子制御装置１と同様である。 Specifically, one end of the pressing member 8 is engaged with a groove 62 between the boundary wall 61 formed by providing the display recess 3c and the curved corner of the peripheral wall 3a. And it is pinched by the surrounding wall 3a. That is, the pressing member mounting portion 60 is configured by the peripheral wall 3a, the boundary wall 61, the top plate 3d near the corner, and the groove 62 formed by these. Other configurations are the same as those of the electronic control device 1 according to the first embodiment described above.

以上のように、第４実施形態による電子制御装置１ｅによれば、ラベルＬを表示するための表示用凹部３ｃを利用し、これを周壁３ａとの間に押圧部材８を狭持するのに用いることで、より簡素な構成の押圧部材取付け部６０によって、押圧部材８を取り付けることができる。 As described above, according to the electronic control unit 1e according to the fourth embodiment, the display recess 3c for displaying the label L is used, and the pressing member 8 is sandwiched between the display recess 3c and the peripheral wall 3a. By using it, the pressing member 8 can be attached by the pressing member mounting portion 60 having a simpler configuration.

図１３は、第５実施形態に係る電子制御装置１ｆを示している。この電子制御装置１ｆもまた、第１実施形態に係る電子制御装置１と比較して、押圧部材取付け部の構成が主に異なっている。以下、第３実施形態に係る電子制御装置について、電子制御装置１と共通する構成要素については共通の符号を用い、電子制御装置１との差異を中心として説明する。 FIG. 13 shows an electronic control device 1f according to the fifth embodiment. This electronic control device 1f is also mainly different from the electronic control device 1 according to the first embodiment in the configuration of the pressing member mounting portion. Hereinafter, the electronic control device according to the third embodiment will be described using the same reference numerals for components common to the electronic control device 1 and focusing on differences from the electronic control device 1.

同図に示すように、本実施形態に係る電子制御装置１ｆは、押圧部材取付け部７０を有している。第１実施形態では、段差部１１の中央に凹部１２が設けられていたのに対し、本実施形態の押圧部材取付け部７０は、同図（Ａ）および（Ｂ）に示すように、上ケース３の下方から見て、円筒状の２つの凸部７１、７１を有している。各凸部７１は、押圧部材８よりも若干、小さな径を有している。また、一方の凸部７１は、左側または右側の周壁３ａとの間に所定の間隔を隔てて、また、他方の凸部７１は、後側の周壁３ａと同じく所定の間隔を隔てて、配置されている。また、両凸部７１、７１の間の間隔は、押圧部材８の径よりも小さくなるように設定されている。 As shown in the figure, the electronic control device 1 f according to the present embodiment has a pressing member mounting portion 70. In the first embodiment, the concave portion 12 is provided at the center of the stepped portion 11, whereas the pressing member mounting portion 70 of the present embodiment has an upper case as shown in FIGS. 3 has two cylindrical convex portions 71, 71 as viewed from below 3. Each convex portion 71 has a slightly smaller diameter than the pressing member 8. Further, one convex portion 71 is arranged with a predetermined interval between the left or right peripheral wall 3a, and the other convex portion 71 is disposed with a predetermined interval like the rear peripheral wall 3a. Has been. Further, the interval between the convex portions 71 and 71 is set to be smaller than the diameter of the pressing member 8.

また、本実施形態では、上記の凸部７１，７１および上ケース３の周壁３ａの間に、押圧部材８が取り付けられている。具体的には、凸部７１，７１と周壁３ａの間の領域に向かって、押圧部材８の一端部を押圧することにより、これら３者３ａ，７１，７１の間に他端部が係合し、押圧部材８は、３者３ａ，７１，７１によって狭持された状態で取り付けられる。また、取付けの際、押圧部材８と天板３ｄの間に存在する空気は、凸部７１，７１の間の間隙および凸部７１と周壁３ａの間の間隙から排気され、押圧部材８は、天板３ｄとの間に隙間なく密着した状態で、押圧部材取付け部７０に固定される。他の構成は、前述した第１実施形態に係る電子制御装置１と同様である。 In the present embodiment, the pressing member 8 is attached between the convex portions 71, 71 and the peripheral wall 3 a of the upper case 3. Specifically, the other end is engaged between the three members 3a, 71, 71 by pressing one end of the pressing member 8 toward the region between the convex portions 71, 71 and the peripheral wall 3a. And the pressing member 8 is attached in the state clamped by the three persons 3a, 71, 71. In addition, during installation, the air existing between the pressing member 8 and the top plate 3d is exhausted from the gap between the convex portions 71 and 71 and the gap between the convex portion 71 and the peripheral wall 3a. It is fixed to the pressing member mounting portion 70 in a state of being in close contact with the top plate 3d without any gap. Other configurations are the same as those of the electronic control device 1 according to the first embodiment described above.

以上のように、第５実施形態に係る電子制御装置１ｆによれば、周壁３ａで押圧部材８を支持することができ、押圧部材８をより確実に第２ケースに固定することができる。また、押圧部材８は、それぞれ独立した凸部７１，７１によって取り付けられるので、周壁３ａとの間に狭持することが可能であれば、凸部７１および押圧部材８を任意の形状およびサイズに変更することができる。したがって、電子制御装置の種類に応じて、より適した形状およびサイズの押圧部材や凸部を用いることができるので、押圧部材取付け部７０の構成をより簡素化することができる。 As described above, according to the electronic control device 1f according to the fifth embodiment, the pressing member 8 can be supported by the peripheral wall 3a, and the pressing member 8 can be more reliably fixed to the second case. Moreover, since the pressing member 8 is attached by the independent convex parts 71 and 71, if it can be pinched between the surrounding walls 3a, the convex part 71 and the pressing member 8 are made into arbitrary shapes and sizes. Can be changed. Therefore, a pressing member or a convex portion having a more suitable shape and size can be used according to the type of the electronic control device, so that the configuration of the pressing member mounting portion 70 can be further simplified.

図１４は、第６実施形態に係る電子制御装置１ｇを示している。この電子制御装置１ｇもまた、第１実施形態に係る電子制御装置１と比較して、押圧部材取付け部の構成が主に異なっている。以下、第６実施形態に係る電子制御装置について、電子制御装置１と共通する構成要素については共通の符号を用い、電子制御装置１との差異を中心として説明する。 FIG. 14 shows an electronic control unit 1g according to the sixth embodiment. This electronic control device 1g is also mainly different from the electronic control device 1 according to the first embodiment in the configuration of the pressing member mounting portion. Hereinafter, the electronic control device according to the sixth embodiment will be described using the same reference numerals for components common to the electronic control device 1 and focusing on differences from the electronic control device 1.

同図に示すように、本実施形態に係る電子制御装置１ｇは、押圧部材取付け部８０を有している。第１実施形態では、段差部１１の中央に凹部１２が設けられていたのに対し、本実施形態の押圧部材取付け部７０は、同図（Ａ）および（Ｃ）に示すように、天板３ｄから下方にそれぞれ突出する第１の凸部８１および２つの凸部８２、８２を有している。これら３者８１，８２，８２は、いずれも押圧部材８よりも若干、小さな径を有しており、押圧部材８を取り囲むように配置されている。 As shown in the figure, the electronic control device 1g according to the present embodiment has a pressing member mounting portion 80. In the first embodiment, the concave portion 12 is provided in the center of the stepped portion 11, whereas the pressing member mounting portion 70 of the present embodiment has a top plate as shown in FIGS. It has the 1st convex part 81 and the two convex parts 82 and 82 which protrude below from 3d, respectively. These three members 81, 82, 82 all have a slightly smaller diameter than the pressing member 8, and are arranged so as to surround the pressing member 8.

具体的には、凸部８１は、押圧部材８を間に存して、周壁３ａの隅部と反対側に配置されている。また、一方の凸部８２は、左側または右側の周壁３ａとの間に所定の間隔を隔てて、また、他方の凸部８２は、後側の側部３ａと同じく所定の間隔を隔てて、それぞれ配置されている。また、両凸部８２、８２の間の間隔は、押圧部材８の径よりも若干、小さくなるように設定され、両凸部８２、８２と凸部８１の間の間隔は、押圧部材８の径よりも小さくなるように設定されている。 Specifically, the convex portion 81 is disposed on the opposite side of the corner portion of the peripheral wall 3a with the pressing member 8 therebetween. Further, one convex portion 82 is spaced apart from the left or right peripheral wall 3a by a predetermined distance, and the other convex portion 82 is spaced apart from the rear side portion 3a by a predetermined distance, Each is arranged. In addition, the interval between the two convex portions 82 and 82 is set to be slightly smaller than the diameter of the pressing member 8, and the interval between the both convex portions 82 and 82 and the convex portion 81 is the same as that of the pressing member 8. It is set to be smaller than the diameter.

押圧部材８は、以上のような凸部８１および凸部８２，８２によって取り囲まれた領域に取り付けられている。具体的には、この領域に向かって、押圧部材８の一端部を押圧することにより、これら３者８１，８２，８２の間に他端部が係合し、押圧部材８は、３者８１，８２，８２によって狭持された状態で取り付けられる。その際、押圧部材８と天板３ｄの間に存在する空気は、凸部８１、８２の間、および凸部８２，８２の間の間隙から排気され、押圧部材８は、天板３ｄとの間に隙間なく密着した状態で、押圧部材取付け部８０に固定される。他の構成は、前述した第１実施形態に係る電子制御装置１と同様である。 The pressing member 8 is attached to a region surrounded by the convex portion 81 and the convex portions 82 and 82 as described above. Specifically, by pressing one end of the pressing member 8 toward this region, the other end is engaged between the three members 81, 82, 82, and the pressing member 8 is connected to the three members 81. , 82 and 82 are attached in a sandwiched state. At that time, the air existing between the pressing member 8 and the top plate 3d is exhausted between the convex portions 81 and 82 and the gap between the convex portions 82 and 82, and the pressing member 8 is connected to the top plate 3d. It is fixed to the pressing member mounting portion 80 in a state where it is in close contact with no gap. Other configurations are the same as those of the electronic control device 1 according to the first embodiment described above.

以上のように第６実施形態に係る電子制御装置１ｇによれば、前述した第５実施形態と同様、凸部８１，８２，８２および押圧部材８を任意の形状およびサイズに変更することができ、電子制御装置の種類に応じてより適した押圧部材や凸部を用いて、押圧部材取付け部８０の構成をより簡素化することができる。また、押圧部材８は、凸部８１，８２，８２のみによって狭持されるので、これらを天板３ｄの任意の位置に配置することができる。 As described above, according to the electronic control device 1g according to the sixth embodiment, the convex portions 81, 82, 82 and the pressing member 8 can be changed to any shape and size, as in the fifth embodiment described above. The configuration of the pressing member mounting portion 80 can be further simplified by using a pressing member and a convex portion that are more suitable for the type of the electronic control device. Moreover, since the pressing member 8 is pinched only by the convex parts 81, 82, 82, these can be arrange | positioned in the arbitrary positions of the top plate 3d.

図１５は、第７実施形態による電子制御装置１ｈを示している。この電子制御装置１ｈもまた、第１実施形態に係る電子制御装置１と比較して、押圧部材取付け部の構成が主に異なっている。以下、第７実施形態に係る電子制御装置１ｈについて、電子制御装置１と共通する構成要素については共通の符号を用い、電子制御装置１との差異を中心として説明する。 FIG. 15 shows an electronic control unit 1h according to the seventh embodiment. This electronic control device 1h also differs from the electronic control device 1 according to the first embodiment mainly in the configuration of the pressing member mounting portion. Hereinafter, the electronic control device 1h according to the seventh embodiment will be described with a focus on differences from the electronic control device 1 using common reference numerals for components common to the electronic control device 1.

同図に示すように、本実施形態に係る電子制御装置１ｈは、押圧部材取付け部１０に代えて押圧部材取付け部９０を有している。第１実施形態では、段差部１１の中央に設けた凹部１２に、押圧部材５が嵌合しているのに対し、本実施形態の押圧部材取付け部９０は、同図（Ａ）および（Ｃ）に示すように、段差部９１の中央に円形の貫通孔９２が形成されている。 As shown in the figure, the electronic control device 1 h according to the present embodiment has a pressing member mounting portion 90 instead of the pressing member mounting portion 10. In the first embodiment, the pressing member 5 is fitted in the recess 12 provided in the center of the step portion 11, whereas the pressing member mounting portion 90 of the present embodiment is shown in FIGS. ), A circular through hole 92 is formed in the center of the stepped portion 91.

また、本実施形態の押圧部材９は、この貫通孔９２に取り付けられている。同図（Ｂ）に示すように、押圧部材９は、第１実施形態の押圧部材５と同じくゴム材で構成され、中実の円柱状に形成されており、その一端部に係合溝９ａ（係合部）を有している。この係合溝９ａは、押圧部材９の周方向にわたって延びており、したがって、押圧部材９の係合溝９ａが形成された部位の径は、他の部位よりも小さくなっており、この部位の径は、上述した貫通孔９２の径とほぼ同じ、または若干、大きくなるように、係合溝９ａの深さが設定されている。 Further, the pressing member 9 of this embodiment is attached to the through hole 92. As shown in FIG. 5B, the pressing member 9 is made of a rubber material, like the pressing member 5 of the first embodiment, and is formed in a solid cylindrical shape, and has an engagement groove 9a at one end thereof. (Engagement part). The engagement groove 9a extends in the circumferential direction of the pressing member 9. Therefore, the diameter of the portion of the pressing member 9 where the engagement groove 9a is formed is smaller than the other portions. The depth of the engagement groove 9a is set so that the diameter is substantially the same as or slightly larger than the diameter of the through hole 92 described above.

押圧部材９を貫通孔９２に取り付けるときには、その係合溝９ａが形成された側の端部を、上ケース３の下方から貫通孔９２に向かって押圧することにより、押圧部材８を変形させながら、貫通孔９２に挿入する。そして、係合溝９ａに段差部９１が係合することによって、押圧部材９は、上下方向および基板４の平面方向のいずれの方向への移動も阻止された状態で押圧部材取付け部９０に取り付けられる。他の構成は、前述した第１実施形態と同様である。 When attaching the pressing member 9 to the through hole 92, the end on the side where the engaging groove 9 a is formed is pressed toward the through hole 92 from below the upper case 3, thereby deforming the pressing member 8. , Inserted into the through hole 92. Then, when the step portion 91 is engaged with the engagement groove 9a, the pressing member 9 is attached to the pressing member mounting portion 90 in a state in which movement in either the vertical direction or the planar direction of the substrate 4 is prevented. It is done. Other configurations are the same as those of the first embodiment described above.

以上のように第７実施形態に係る電子制御装置１ｈによれば、前述した各実施形態と同様、回路基板４は押圧部材９によって第１ケース２に押圧されるので、回路基板４を第１ケースに接触した状態に確実に維持することができる。それにより、回路基板４に生じた熱を、第１ケース２から効果的に放熱させることができる。また、押圧部材９の取付けのための構成として、第２ケース３には貫通孔９２が形成されるだけなので、第２ケース３の構成をより簡素化でき、電子制御装置１ｈの製造コストを抑制することができる。 As described above, according to the electronic control device 1h according to the seventh embodiment, the circuit board 4 is pressed against the first case 2 by the pressing member 9 as in the above-described embodiments. It can be reliably maintained in a state in contact with the case. Thereby, the heat generated in the circuit board 4 can be effectively radiated from the first case 2. Further, as a configuration for attaching the pressing member 9, only the through hole 92 is formed in the second case 3, so that the configuration of the second case 3 can be further simplified and the manufacturing cost of the electronic control device 1h is suppressed. can do.

図１６（Ａ）は、第８実施形態による電子制御装置１ｉを示している。この電子制御装置１ｉもまた、電子制御装置１と比較して、押圧部材取付け部の構成が主に異なっている。以下、第８実施形態に係る電子制御装置１ｉについて、電子制御装置１と共通する構成要素については共通の符号を用い、電子制御装置１との差異を中心として説明する。 FIG. 16A shows an electronic control device 1 i according to the eighth embodiment. The electronic control device 1 i is also mainly different from the electronic control device 1 in the configuration of the pressing member mounting portion. Hereinafter, the electronic control apparatus 1 i according to the eighth embodiment will be described using the same reference numerals for components common to the electronic control apparatus 1, and focusing on differences from the electronic control apparatus 1.

同図に示すように、本実施形態の電子制御装置１ｉは、下ケース２の台座２ｃに設けられ、押圧部材５を取り付けるための押圧部材取付け部１００を有している。この押圧部材取付け部１００は、台座２ｃの中央から上方の上ケース３側に突出するように細長く形成されており、押圧部材５の排気孔５ａとほぼ同じ所定の径を有する円柱状に形成されている。このような押圧部材取付け部１００は、下ケース２をダイカスト成型する際に、台座２ｃなどとともに一体に形成される。 As shown in the figure, the electronic control device 1 i of the present embodiment includes a pressing member mounting portion 100 that is provided on the base 2 c of the lower case 2 and for mounting the pressing member 5. The pressing member mounting portion 100 is formed in an elongated shape so as to protrude from the center of the base 2c to the upper case 3 side, and is formed in a columnar shape having a predetermined diameter substantially the same as the exhaust hole 5a of the pressing member 5. ing. Such a pressing member mounting portion 100 is integrally formed with the base 2c and the like when the lower case 2 is die-cast.

また、回路基板４の接地用ランド４ｂが形成された部位には、回路基板４を貫通する貫通孔４ｃが形成されており、この貫通孔４ｃは、押圧部材取付け部１００よりも大きな径を有している。 Further, a through hole 4c that penetrates the circuit board 4 is formed at a portion of the circuit board 4 where the grounding land 4b is formed. The through hole 4c has a diameter larger than that of the pressing member mounting portion 100. doing.

押圧部材５は、上述した押圧部材取付け部１００に取り付けられている。すなわち、回路基板４の貫通孔４ｃに押圧部材取付け部１００を挿入した状態で、押圧部材５の排気孔５ａに押圧部材取付け部１００が挿入されるように、押圧部材５を下ケース２側に押圧し、その端面を回路基板４に接触させる。そして、そのような状態で上ケース３を下ケース２に接合させることによって、押圧部材５および回路基板４は、上ケース３の天板３ｄと下ケース２の台座２ｃによって狭持される。それにより、回路基板４は、押圧部材５によって台座２ｃに押圧された状態で、下ケース２に固定される。 The pressing member 5 is attached to the pressing member attaching portion 100 described above. That is, in a state where the pressing member mounting portion 100 is inserted into the through hole 4 c of the circuit board 4, the pressing member 5 is moved to the lower case 2 side so that the pressing member mounting portion 100 is inserted into the exhaust hole 5 a of the pressing member 5. The end surface is pressed and brought into contact with the circuit board 4. Then, by pressing the upper case 3 to the lower case 2 in such a state, the pressing member 5 and the circuit board 4 are sandwiched between the top plate 3d of the upper case 3 and the base 2c of the lower case 2. Thereby, the circuit board 4 is fixed to the lower case 2 while being pressed against the pedestal 2 c by the pressing member 5.

以上のように、第８実施形態に係る電子制御装置１ｉによれば、押圧部材５の排気孔５ａを利用し、これに押圧部材取付け部１００を挿入することによって、押圧部材５が下ケース２に取り付けられる。したがって、押圧部材取付１００によって、押圧部材５の回路基板４の平面方向への移動が阻止されるので、押圧部材５を下ケース２に安定して取り付けることができ、押圧部材５によって、回路基板４を下ケース２に安定して押圧することができる。 As described above, according to the electronic control unit 1i according to the eighth embodiment, the pressing member 5 is inserted into the pressing member mounting portion 100 by using the exhaust hole 5a of the pressing member 5, and the pressing member 5 is thus attached to the lower case 2. Attached to. Therefore, since the movement of the pressing member 5 in the plane direction of the circuit board 4 is prevented by the pressing member attachment 100, the pressing member 5 can be stably attached to the lower case 2, and the circuit board is provided by the pressing member 5. 4 can be stably pressed against the lower case 2.

図１６（Ｂ）は、上述した第８実施形態に係る電子制御装置１ｉの変形例を示している。この変形例に係る電子制御装置１ｊの押圧部材取付け部１００は、電子制御装置１ｉの押圧部材取付け部１００と基本的に同じ構成を有しており、台座２ｃに設けられた押圧部材取付け部１００の根本付近に、補強部１０１を設けた点のみが異なっている。補強部１０１は、押圧部材取付け部１００と同軸上に配置されており、回路基板４の貫通孔４ｃの深さよりも若干、高さの小さな円柱状に形成されている。また、補強部１０１の径は、押圧部材取付け部１００の径よりも大きく、且つ回路基板４の貫通孔４ｃの径よりも小さく設定されている。 FIG. 16B shows a modification of the electronic control device 1i according to the eighth embodiment described above. The pressing member mounting portion 100 of the electronic control device 1j according to this modification has basically the same configuration as the pressing member mounting portion 100 of the electronic control device 1i, and the pressing member mounting portion 100 provided on the base 2c. The only difference is that a reinforcing portion 101 is provided in the vicinity of the root of the. The reinforcing portion 101 is disposed coaxially with the pressing member mounting portion 100 and is formed in a columnar shape that is slightly smaller in height than the depth of the through hole 4 c of the circuit board 4. The diameter of the reinforcing portion 101 is set to be larger than the diameter of the pressing member mounting portion 100 and smaller than the diameter of the through hole 4 c of the circuit board 4.

以上のように本変形例に係る電子制御装置１ｊによれば、補強部１０１が設けられていることにより、押圧部材５を介して押圧部材取付け部１００により大きな応力が作用しても、押圧部材取付け部１００の変形を防止でき、押圧部材５を下ケース２に確実に固定することができる。 As described above, according to the electronic control device 1j according to the present modification example, the reinforcing member 101 is provided, so that even if a large stress acts on the pressing member mounting portion 100 via the pressing member 5, the pressing member The deformation of the attachment portion 100 can be prevented, and the pressing member 5 can be securely fixed to the lower case 2.

図１７は、第９実施形態に係る電子制御装置１ｋを示している。この電子制御装置１ｋもまた、第１実施形態と比較して、押圧部材取付け部の構成が主に異なっている。以下、第８実施形態に係る電子制御装置について、電子制御装置１と共通する構成要素については共通の符号を用い、電子制御装置１との差異を中心として説明する。 FIG. 17 shows an electronic control unit 1k according to the ninth embodiment. This electronic control device 1k also differs from the first embodiment mainly in the configuration of the pressing member mounting portion. Hereinafter, the electronic control device according to the eighth embodiment will be described focusing on differences from the electronic control device 1 using common reference numerals for components common to the electronic control device 1.

同図（Ａ）に示すように、本実施形態の押圧部材取付け部１１０は、段差部１１１および押圧部材Ｓを有している。上ケース３の押圧部材取付け部１１０付近の周壁３ａは、他の部位よりも内側に配置されており、段差部１１１は、この周壁３ａの下端部とフランジ部３ｂとの間に延びている。また、下ケース２の台座２ｃは省略されており、台座２ｃに代えて押圧部材Ｓが設けられている。この押圧部材Ｓは、導体で構成されたバネであり、押圧部材Ｓの一方の端部が下ケースの底板２ａに、他方の端部が回路基板４の接地用ランド４ｂに接触している。 As shown in FIG. 4A, the pressing member mounting portion 110 of this embodiment includes a step portion 111 and a pressing member S. The peripheral wall 3a in the vicinity of the pressing member mounting portion 110 of the upper case 3 is disposed on the inner side than other portions, and the stepped portion 111 extends between the lower end portion of the peripheral wall 3a and the flange portion 3b. Further, the base 2c of the lower case 2 is omitted, and a pressing member S is provided instead of the base 2c. The pressing member S is a spring made of a conductor, and one end of the pressing member S is in contact with the bottom plate 2 a of the lower case, and the other end is in contact with the grounding land 4 b of the circuit board 4.

回路基板４は、以上のような段差部１１１と押圧部材Ｓによって狭持されており、押圧部材Ｓによって段差部１１１に押圧されている。他の構成は、前述した第１実施形態による電子制御装置１と同様である。 The circuit board 4 is held between the stepped portion 111 and the pressing member S as described above, and is pressed against the stepped portion 111 by the pressing member S. Other configurations are the same as those of the electronic control apparatus 1 according to the first embodiment described above.

以上のように、第９実施形態による電子制御装置１ｋによれば、押圧部材Ｓによって、回路基板４の押圧による固定、および下ケース２への接地の双方を行うことができる。なお、上述した押圧部材Ｓは、回路基板４に実装してもよく、または下ケース２に固定してもよい。 As described above, according to the electronic control device 1k according to the ninth embodiment, the pressing member S can both fix the circuit board 4 by pressing and ground the lower case 2. The pressing member S described above may be mounted on the circuit board 4 or fixed to the lower case 2.

図１７（Ｂ）は、上述した第９実施形態に係る電子制御装置１ｋの変形例を示している。この変形例に係る電子制御装置１ｌの押圧部材取付け部１２０は、電子制御装置１ｋと比較して、下ケース２に形成された凹部１２２およびその底面に形成された凸部１２３をさらに有している。 FIG. 17B shows a modification of the electronic control device 1k according to the ninth embodiment described above. Compared with the electronic control device 1k, the pressing member mounting portion 120 of the electronic control device 11 according to this modification further includes a concave portion 122 formed in the lower case 2 and a convex portion 123 formed on the bottom surface thereof. Yes.

凹部１２２は、上ケース３の段差部１２１に向かって開口するように配置され、押圧部材５ｂよりも大きな径を有する円筒形に形成されている。また、凸部１２３は、押圧部材５ｂの排気孔５ａとほぼ同じ径を有する円柱状に形成されている。押圧部材５ｂは、その排気孔５ｃに凸部１２３が挿入された状態で、凹部１２２に取り付けられている。 The concave portion 122 is disposed so as to open toward the stepped portion 121 of the upper case 3, and is formed in a cylindrical shape having a larger diameter than the pressing member 5b. Moreover, the convex part 123 is formed in the column shape which has a diameter substantially the same as the exhaust hole 5a of the press member 5b. The pressing member 5b is attached to the concave portion 122 in a state where the convex portion 123 is inserted into the exhaust hole 5c.

押圧部材５ｂを凹部１２２に取り付けるときには、押圧部材５ｂと凹部１２２との間の空気は、凹部１２２の内周面と、押圧部材５ｂの外周面との間の隙間を通過して凹部１２２の外に排気され、それにより、押圧部材５ｂは、その一方の端面と凹部１２２の底面との間に隙間を生じることなく、凹部１２２に取り付けられている。また、押圧部材５ｂの他方の端面は、回路基板４の端部に接触しており、回路基板４は、段差部１２１と押圧部材５ｂによって狭持されている。 When the pressing member 5b is attached to the concave portion 122, the air between the pressing member 5b and the concave portion 122 passes through the gap between the inner peripheral surface of the concave portion 122 and the outer peripheral surface of the pressing member 5b, and is outside the concave portion 122. Thus, the pressing member 5b is attached to the recess 122 without generating a gap between one end surface thereof and the bottom surface of the recess 122. The other end surface of the pressing member 5b is in contact with the end of the circuit board 4, and the circuit board 4 is held between the stepped portion 121 and the pressing member 5b.

また、本変形例では、凹部１２２および押圧部材５ｂを設けたことにより、回路基板４の接地用ランド４ｂ、および接地用ランド４ｂを介して回路基板４を上ケース３側に押圧する押圧部材Ｓが、筐体Ｈのより内側に配置されている。他の構成は、前述した第１実施形態に係る電子制御装置１と同様である。 Further, in this modification, by providing the recess 122 and the pressing member 5b, the grounding land 4b of the circuit board 4 and the pressing member S that presses the circuit board 4 toward the upper case 3 via the grounding land 4b. Is arranged inside the housing H. Other configurations are the same as those of the electronic control device 1 according to the first embodiment described above.

以上のように、本変形例に係る電子制御装置１ｌによれば、回路基板４は、押圧部材Ｓだけでなく、ゴム材で構成された押圧部材５ｂからも押圧されているので、回路基板４をより確実に固定することができる。また、押圧部材５ｂを例えば導電性を有するゴム材で構成することにより、押圧部材５ｂおよび押圧部材Ｓの双方で、回路基板４を下ケース２により確実に接地させることができる。 As described above, according to the electronic control device 11 according to this modification, the circuit board 4 is pressed not only from the pressing member S but also from the pressing member 5b made of a rubber material. Can be fixed more reliably. Moreover, the circuit board 4 can be reliably earth | grounded by the lower case 2 by both the press member 5b and the press member S by comprising the press member 5b with the rubber material which has electroconductivity, for example.

なお、上述した各実施形態および変形例では、筐体Ｈの後側の左右の隅部に押圧部材を取り付けた例を説明したが、これに限定されることなく、回路基板４の形状、サイズ、および回路基板４に設けられた電子部品や回路の配置に応じて、筐体Ｈの任意の位置に、任意の数の押圧部材取付け部を設けて押圧部材を取り付けてもよい。 In each of the above-described embodiments and modifications, the example in which the pressing members are attached to the left and right corners on the rear side of the housing H has been described. However, the shape and size of the circuit board 4 are not limited thereto. Depending on the arrangement of electronic components and circuits provided on the circuit board 4, an arbitrary number of pressing member attaching portions may be provided at arbitrary positions of the housing H to attach the pressing members.

また、上述した第１実施形態などでは、円筒形の凹部に円柱状の押圧部材を嵌合させた例を説明したが、これに限定されることなく、任意の形状の凹部および押圧部材を設けて、例えば、断面が多角形状の凹部を設けて、これに円柱状の押圧部材を嵌合させてもよい。それにより、凹部の内壁面と押圧部材の外周面との間に隙間が確保されるので、この隙間を排気通路として用いることが可能になる。また、断面が多角形状の押圧部材を用いてもよい。その他、本発明の趣旨の範囲内で、細部の構成を適宜、変更することが可能である。 In the first embodiment and the like described above, the example in which the columnar pressing member is fitted to the cylindrical recess has been described. However, the present invention is not limited to this, and an arbitrarily shaped recess and pressing member are provided. For example, a concave portion having a polygonal cross section may be provided, and a cylindrical pressing member may be fitted thereto. Thereby, a gap is secured between the inner wall surface of the recess and the outer peripheral surface of the pressing member, and this gap can be used as an exhaust passage. A pressing member having a polygonal cross section may be used. In addition, it is possible to appropriately change the detailed configuration within the scope of the gist of the present invention.

１電子制御装置
１ａ〜１ｌ電子制御装置
２下ケース（第１ケース）
３上ケース（第２ケース）
３ａ周壁
３ｃ表示用凹部
４回路基板
５押圧部材
５ａ排気孔（排気手段、押圧部材側排気通路）
５ｂ押圧部材
５ｃ排気孔（排気手段、押圧部材側排気通路）
６押圧部材
６ｂ排気溝（排気手段、押圧部材側排気通路）
７押圧部材
７ｂ排気溝（排気手段、押圧部材側排気通路）
８，９押圧部材
９ａ係合溝（係合部）
１０押圧部材取付け部
１１段差部
１２凹部
２０押圧部材取付け部
２１段差部
２２凹部
３０押圧部材取付け部
３１段差部
３２凹部
４０押圧部材取付け部
４１段差部
４２凹部
４３境界面
５０押圧部材取付け部
５１段差部
５２凹部
６０押圧部材取付け部
７０押圧部材取付け部
７１凸部
８０押圧部材取付け部
８１，８２凸部
９０押圧部材取付け部
９２貫通孔
１００押圧部材取付け部
１１０押圧部材取付け部
１２０押圧部材取付け部
Ｈ筐体
Ｓ押圧部材 DESCRIPTION OF SYMBOLS 1 Electronic control apparatus 1a-1l Electronic control apparatus 2 Lower case (1st case)
3 Upper case (second case)
3a Perimeter wall 3c Display recess 4 Circuit board 5 Press member 5a Exhaust hole (exhaust means, press member side exhaust passage)
5b Press member 5c Exhaust hole (exhaust means, press member side exhaust passage)
6 Pressing member 6b Exhaust groove (exhaust means, pressing member side exhaust passage)
7 Pressing member 7b Exhaust groove (exhaust means, pressing member side exhaust passage)
8, 9 Pressing member 9a Engaging groove (engaging part)
DESCRIPTION OF SYMBOLS 10 Press member attachment part 11 Step part 12 Recess 20 Press member attachment part 21 Step part 22 Recess 30 Press member attachment part 31 Step part 32 Recess 40 Press member attachment part 41 Step part 42 Concave part 43 Boundary surface 50 Press member attachment part 51 Step Portion 52 Recessed portion 60 Pressing member mounting portion 70 Pressing member mounting portion 71 Protruding portion 80 Pressing member mounting portion 81, 82 Convex portion 90 Pressing member mounting portion 92 Through hole 100 Pressing member mounting portion 110 Pressing member mounting portion 120 Pressing member mounting portion H Housing S Pressing member

Claims

A plate-like circuit board;
A first case disposed on one surface side of the circuit board and attached so that the circuit board contacts, and a second case disposed on the other surface side of the circuit board and joined to the first case. A case, and a housing that houses the circuit board between the first and second cases,
A pressing member mounting portion provided in the second case;
The circuit board is held by the first and second cases together with the circuit board in a state where the circuit board is attached to the pressing member attaching portion and the second case is joined to the first case. A pressing member that presses one case side;
When attaching the pressing member to the pressing member mounting portion, an exhaust means for exhausting air between the pressing member mounting portion,
Equipped with a,
The pressing member is provided with a pressing member side exhaust passage as the exhaust means,
The pressing member mounting portion has a cylindrical recess that opens to the first case side,
The pressing member is formed in a cylindrical shape and is fitted in the recess,
The pressing member side exhaust passage, when the pressing member is fitted into the recess, the electronic control device according to claim Rukoto through communication between the inside and outside of the concave portion.

A peripheral wall extending toward the first case for joining to the first case is formed on a peripheral portion of the second case,
The concave portion is disposed adjacent to the peripheral wall inside the second case with respect to the peripheral wall, and an inner peripheral surface of the concave portion extends continuously from a wall surface of the peripheral wall. The electronic control device according to 1.

The pressing member mounting portion has a notch-shaped step portion on the side opposite to the first case of the second case ,
Portions other than the step portion of the step and the second case are separated by a boundary surface extending linearly between the outer edges of the second case,
The electronic control device according to any one of claims 1 or 2, wherein the recess is characterized that you have provided on the first casing side of the step portion.