WO2011045899A1 - 電子制御装置 - Google Patents
電子制御装置 Download PDFInfo
- Publication number
- WO2011045899A1 WO2011045899A1 PCT/JP2010/005783 JP2010005783W WO2011045899A1 WO 2011045899 A1 WO2011045899 A1 WO 2011045899A1 JP 2010005783 W JP2010005783 W JP 2010005783W WO 2011045899 A1 WO2011045899 A1 WO 2011045899A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electronic control
- control device
- lid
- liquid
- housing
- Prior art date
Links
- 239000007788 liquid Substances 0.000 claims description 97
- 239000000758 substrate Substances 0.000 claims description 40
- 238000002955 isolation Methods 0.000 claims description 33
- 230000002093 peripheral effect Effects 0.000 claims description 27
- 230000008878 coupling Effects 0.000 claims description 21
- 238000010168 coupling process Methods 0.000 claims description 21
- 238000005859 coupling reaction Methods 0.000 claims description 21
- 230000004308 accommodation Effects 0.000 claims description 9
- 210000000078 claw Anatomy 0.000 description 46
- 238000010586 diagram Methods 0.000 description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 230000000694 effects Effects 0.000 description 11
- 239000012466 permeate Substances 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/0026—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units
- H05K5/0047—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having a two-part housing enclosing a PCB
- H05K5/0056—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having a two-part housing enclosing a PCB characterized by features for protecting electronic components against vibration and moisture, e.g. potting, holders for relatively large capacitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0403—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by constructional features, e.g. common housing for motor and gear box
- B62D5/0406—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by constructional features, e.g. common housing for motor and gear box including housing for electronic control unit
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/0026—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units
- H05K5/0047—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having a two-part housing enclosing a PCB
- H05K5/0052—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having a two-part housing enclosing a PCB characterized by joining features of the housing parts
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0213—Venting apertures; Constructional details thereof
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0213—Venting apertures; Constructional details thereof
- H05K5/0214—Venting apertures; Constructional details thereof with means preventing penetration of rain water or dust
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1427—Housings
- H05K7/1432—Housings specially adapted for power drive units or power converters
- H05K7/14322—Housings specially adapted for power drive units or power converters wherein the control and power circuits of a power converter are arranged within the same casing
Definitions
- the present invention relates to an electronic control device.
- EPS electric power steering system
- This electronic control device is attached, for example, near the column shaft.
- liquids such as column dew condensation water and vehicle interior cleaning liquid may drip into the electronic control unit, and the liquid enters the electronic control unit from the gap between the lid and the storage unit. May occur.
- a sealing agent between a housing as a housing portion and a lid as a lid portion (for example, Japanese Patent Application Laid-Open No. 2007-273807). Gazette and corresponding US public relations 2007/0230137).
- the present disclosure has been made in view of the above problems, and an object of the present disclosure is to provide an electronic control device having a simple configuration and a high effect of suppressing liquid intrusion.
- the electronic control device forms a housing space between the housing portion as a case having an opening and a bottom portion and the housing portion by closing the opening of the housing portion.
- the lid portion or the lid portion or the coupling portion that fixes the lid portion to the accommodating portion, and the lid portion or the lid portion so as to extend outward from an abutting portion where the lid portion and an end surface of the peripheral edge of the opening abut.
- An extension part formed in the storage part and a control part provided in the storage space are provided.
- the extension part has a standing part that is erected toward the bottom part or the lid part and is formed so as to cover the contact part.
- a gap of a predetermined size is formed between the standing portion and the vicinity of the contact portion of the outer wall of the lid portion or the outer wall of the housing portion.
- FIG. 1 is a schematic diagram showing a mounting state of the electronic control device according to the first embodiment.
- FIG. 2 is a schematic diagram showing a perspective view of the electronic control device according to the first embodiment.
- FIG. 3 is a schematic diagram showing a plan view of the surface of the lid of the electronic control device according to the first embodiment.
- FIG. 4 is a schematic diagram showing a housing side plan view of the electronic control device according to the first embodiment.
- FIG. 5 is a schematic diagram showing a cross-sectional view taken along the line VV of the electronic control device of FIG. FIG.
- FIG. 6 is a schematic diagram illustrating a lid side plan view of the electronic control device according to the first embodiment.
- FIG. 7 is a schematic diagram showing a main part inclination view of the electronic control device according to the second embodiment.
- FIG. 8 is a schematic diagram illustrating a side view of the electronic control device according to the second embodiment.
- FIG. 9A is a schematic diagram illustrating a plan view of the housing portion side of the electronic control device of the second embodiment
- FIG. 9B is a schematic diagram illustrating a cross-sectional view of the electronic control device of FIG. 9A along the line IXB-IXB.
- FIG. 10 is a schematic diagram illustrating a side view of the electronic control device according to the third embodiment.
- FIG. 10 is a schematic diagram illustrating a side view of the electronic control device according to the third embodiment.
- FIG. 11 is a schematic diagram illustrating a lid side plan view of the electronic control device according to the third embodiment.
- FIG. 12 is a schematic diagram showing an essential part tilt view of the electronic control device according to the third embodiment.
- FIG. 13 is a schematic diagram illustrating a side view of the electronic control device according to the fourth embodiment.
- FIG. 14 is a schematic diagram illustrating a lid side plan view of the electronic control device according to the fourth embodiment.
- FIG. 15 is a schematic diagram illustrating a side view of the electronic control device according to the fifth embodiment.
- 16A-16C are schematic views showing a cross-sectional view of a relevant part of the electronic control device according to the sixth embodiment.
- 17A-17C are schematic views showing a cross-sectional view of a relevant part of the electronic control device according to the seventh embodiment.
- FIG. 18 is a schematic diagram showing a side view of a main part of the electronic control device according to the eighth embodiment.
- FIG. 19 is a schematic diagram illustrating a schematic diagram of a main
- the electronic control device of this embodiment is shown in FIGS.
- the electronic control device according to the present embodiment is used in, for example, EPS of a vehicle, and drives and controls a motor that generates steering assist force based on a steering torque signal and a vehicle speed signal.
- the electronic control unit 1 is provided below the column 91 connected to the handle 92. Moreover, the electronic control apparatus 1 is formed in a substantially rectangular shape, and is arranged so that all of the four sides are inclined with respect to a plane perpendicular to the vertical direction.
- the electronic control device 1 includes a housing part 10, a lid part 20, a claw part 11, and a control part 30.
- the accommodating portion 10 is formed of a metal such as stainless steel subjected to galvanization, and has a container shape having a substantially rectangular bottom portion 13 and side walls 12.
- the side wall 12 has a claw portion 11 on the opening peripheral edge opposite to the bottom portion 13.
- the claw part 11 fixes the lid part 20 to the housing part 10 by caulking the lid part 20.
- the control unit 30 is formed by mounting electronic components such as a MOS, an aluminum electrolytic capacitor, a coil, a relay, and a shunt resistor on a substrate.
- the substrate 31 is fixed to the lid 20 by passing screws through an area where there are no electronic components and assembling the screws 31 to the screw assembly.
- the lid portion 20 has a substantially rectangular plate shape as shown in FIGS. 2, 3 and 4, and is formed of a metal such as aluminum.
- the electronic control device 1 is arranged to be inclined with respect to the vertical direction, one corner 232 is located on the uppermost side in the vertical direction among the four corners 232 of the lid portion 20, and the corner 232. And the corner 232 which is in a diagonal relationship with the bottom is located on the lowermost side.
- the lid part 20 closes the opening of the accommodating part 10 to form an accommodating space 15 for accommodating the control part 30.
- the surface of the lid 20 on the side of the accommodating portion 10 is defined as the back surface, and the surface on the opposite side is defined as the surface.
- the lid portion 20 has a contact portion 230 on the back surface that contacts the end surface 14 of the opening periphery of the housing portion 10.
- a position closer to the center part of the lid part 20 than the contact part 230 is referred to as “inner side”
- a position farther from the center part than the contact part 230 is referred to as “outer side”.
- the lid portion 20 is formed as an extending portion that extends outward from the contact portion 230 in the planar direction including the surface, and is opposed to the corner portion 232 of the outer peripheral edge. It has 1st extension part 221,222,223,224. Moreover, the cover part 20 has the 2nd extension part 231 formed facing the edge part which connects the corner part 232 and the corner part 232 among an outer periphery as an extension part.
- the first extending portions 221, 222, 223, and 224 are formed to extend outward from the second extending portion 231.
- the second extending portion 231 is provided with a claw-shaped fixing portion 233 that extends outward from the second extending portion 231 and is bent toward the bottom 13 side of the housing portion 10.
- the claw-shaped fixing part 233 is formed on three sides of the four sides of the lid part 20 and fixes the accommodating part 10.
- the connector 40 is provided so as to face one side portion (a portion connecting adjacent corner portions 232) of the outer peripheral edge of the lid portion 20.
- the connector 40 is provided between the first extension part 223 and the first extension part 224, one end is electrically connected to the substrate 31, and the other end is exposed outside the housing part 10.
- a harness (not shown) is connected to the connector 40.
- the first extending portions 221 and 222 have a standing portion 234 that is erected toward the bottom 13 side of the accommodating portion 10 and is formed so as to cover the contact portion 230.
- the standing portion 234 is formed while being bent along the outer edge of the corner portion 232 so as to cover the corner portion 232.
- a gap of a predetermined size is formed between the standing portion 234 and the vicinity of the contact portion 230 in the outer wall of the accommodating portion 10 (side wall 12) (see FIGS. 4 and 5).
- the first extension parts 223 and 224 extend outward from the contact part 230 in the same manner as the first extension parts 221 and 222, but are different from the first extension parts 221 and 222.
- the part 234 is not formed.
- the first extending portions 221 and 222 formed at the two corner portions 232 separated from the connector 40 among the four corner portions 232 are the “first enlarged extending portions” in the claims.
- the 1st extension part 223,224 formed in the two corner parts 232 adjacent to the connector 40 among the four corner parts 232 respond
- first extension portions 223 and 224 are formed so that the end portion on the connector 40 side overlaps the connector 40.
- the 1st extension part 221,222 (1st expansion extension part) is formed so that it may extend outside the 1st extension part 223,224 (2nd expansion extension part).
- the lid portion 20 includes first extending portions 221, 222, 223, and 224 that extend beyond the abutting portion 230 toward the outside in the planar direction including the surface, and a second extending portion 231.
- first extending portions 221, 222, 223, and 224 that extend beyond the abutting portion 230 toward the outside in the planar direction including the surface, and a second extending portion 231.
- the first extending portions 221, 222, 223, and 224 that are formed to face the four corners 232 of the lid portion 20 are the second extending portions that are formed to face the side portions of the lid portion 20. It extends outward from 231. Therefore, it is possible to effectively prevent water or the like from entering the inside of the accommodating portion 10 from the vicinity of the corner 232 in the gap between the lid portion 20 and the end face 14 of the opening periphery of the accommodating portion 10.
- the electronic control device 1 is arranged so that the first extending portions 221 and 222 are positioned higher than the first extending portions 223 and 224. For this reason, even if water is dripped in the vicinity of the first extending portions 221 and 222, the water flows downward along the standing portion 234 in the vertical direction.
- FIGS. Components that are substantially the same as those in the above embodiment are given the same reference numerals, and descriptions thereof are omitted.
- claw parts 11 are formed so that two may become symmetrical.
- a claw fitting portion 25 is provided on the surface of the lid portion 20, and the claw fitting portion 25 and the claw portion 11 of the housing portion 10 are fitted to fix the lid portion 20 to the housing portion 10.
- a claw fitting portion 25 is provided on the surface of the lid portion 20, and the lid portion 20 is accommodated by fitting the claw fitting portion 25 and the claw portion 11 of the accommodation portion 10. It is fixed to the part 10.
- the back surface of the lid portion 20 has a receiving portion fixing claw 21.
- the accommodating portion fixing claw 21 extends from the lid portion 20 along the outer wall of the accommodating portion 10, and is formed across the gap between the lid portion 20 and the accommodating portion 10. By this accommodating portion fixing claw 21, the accommodating portion 10 is fixed to the lid portion 20 so as not to move in the rear surface direction of the lid portion 20.
- a plurality of the above-described claw fitting portions 25 are formed on the surface of the lid portion 20 and have a liquid dripping area 100 as shown in FIG.
- the liquid dripping area 100 is an area determined by predicting a position where liquid such as condensed water drops when the electronic control device 2 of the present embodiment is mounted in the vehicle. For example, when the electronic control device 2 according to the present embodiment is disposed below the column, a position where the condensed water drops on the column is predicted to be the liquid dropping area 100.
- FIG. 8 shows a plan view of the electronic control device 2 according to this embodiment viewed from the lid 20 side.
- a flow path forming part 26 is formed between the liquid dripping area 100 and the claw fitting part 25 in a direction perpendicular to the surface, and the claw fitting part It is formed to go around 25 far.
- the two flow path forming portions 26 are formed so as to be symmetric with respect to the liquid dropping area 100.
- a guide groove 27 is formed on the accommodating portion fixing claw 21 of the lid portion 20 between the two flow path forming portions 26. The liquid guided to the periphery of the lid part 20 falls downward along the guide groove 27.
- FIG. 9 shows a plan view of the electronic control device 2 according to the present embodiment as viewed from the housing 10 side.
- an extending wall 23 is provided upright on the periphery of the back surface of the lid portion 20.
- the extending wall 23 is preferably formed in a direction perpendicular to the back surface along the periphery of the back surface of the lid portion 20, for example, parallel to the side wall of the housing portion 10.
- the extension wall 23 is extended to the accommodating portion 10 side of the gap between the lid portion 20 and the accommodating portion 10.
- the extending wall 23 is preferably about 3 to 5 mm long.
- a screw assembly portion 29, a fitting portion 28, and the like are formed on the back surface of the lid portion 20.
- the screw assembly portion 29 is a place where the substrate 31 is fixed by screws.
- the fitting part 28 is formed in the vicinity of the inner wall of the housing part 10.
- the fitting portion 28 and the inner wall of the housing portion 10 have a gap that allows liquid to easily flow from the fitting portion 28 to the inner wall of the housing portion 10.
- the control unit 30 is formed of, for example, a glass woven fabric and an epoxy resin, and is formed by mounting electronic components 32 such as a MOS, an aluminum electrolytic capacitor, a coil, a relay, and a shunt resistor on a substrate 31.
- the board 31 is fixed to the lid part 20 by passing the screw through an area where the electronic component 32 is not present and assembling the board 31 to the screw assembly part 29.
- a flow path forming portion 26 is formed between the liquid dripping area 100 and the claw fitting portion 25 on the surface of the lid portion 20.
- the liquid in the liquid dripping area 100 is guided to the periphery of the lid part 20 without reaching the gap between the claw fitting part 25 and the claw part 11. Therefore, it is possible to suppress the liquid from entering the electronic control device 2 through the gap between the claw fitting portion 25 and the claw portion 11.
- a guide groove 27 is formed on the accommodating portion fixing claw 21 of the lid portion 20 between the two flow path forming portions 26. Therefore, the liquid guided to the periphery of the lid 20 falls downward along the guide groove 27.
- the accommodating portion fixing claw 21 extends from the lid portion 20 along the outer wall of the accommodating portion 10 and is formed across the gap between the lid portion 20 and the accommodating portion 10. Therefore, it is possible to suppress the water flowing through the guide groove 27 from entering the inside of the electronic control device 2 along the gap between the lid portion 20 and the accommodating portion 10.
- An extension wall 23 is formed on the periphery of the lid portion 20 of the present embodiment. Therefore, it is possible to suppress the liquid from entering the gap between the lid portion 20 and the storage portion 10 due to the surface tension.
- FIGS. 10 and 11 The electronic control device of this embodiment is shown in FIGS. Components that are substantially the same as those in the above embodiment are given the same reference numerals, and descriptions thereof are omitted.
- an isolation wall 261 along the contour of the claw fitting portion 25 is formed on the surface of the lid portion 20 of the present embodiment.
- the isolation wall 261 is preferably formed so as to completely surround the claw portion 11 exposed on the surface of the lid portion 20.
- the isolation wall 261 is preferably formed from the front surface to the back surface of the lid portion 20 to the end portion of the extending wall 23.
- an isolation stand 262 integrated with the claw fitting portion 25 can be formed.
- an isolation groove 263 can be formed instead of the isolation wall 261.
- FIGS. 13 and 14 on the surface of the lid portion 20 of the electronic control device 4, an isolation peripheral wall 24 is erected along the peripheral edge in a direction perpendicular to the surface.
- a drainage groove 241 is formed between the isolation peripheral wall 24 and the isolation wall 261.
- the drain groove 241 is preferably arranged at a position that does not affect other parts.
- drainage grooves 240 are also formed on both sides of the connector 40.
- the liquid in the liquid dripping area 100 enters the gap between the lid portion 20 and the storage portion 10. Further suppression can be achieved. In particular, water or the like can be prevented from entering from the gap between the connector 40 and the lid 20.
- the electronic control device 3 may be inclined toward any drain groove 241 side. Therefore, the freedom degree of arrangement
- the drainage grooves 240 on both sides of the connector 40 suppress the intrusion of the liquid into the gap between the connector 40 and the accommodating portion 10 by guiding and discharging the liquid, and achieve a high waterproof effect with a simple configuration. be able to.
- the electronic control device of this embodiment is shown in FIG. Components that are substantially the same as those in the above embodiment are given the same reference numerals, and descriptions thereof are omitted.
- the fitting portion 28 is formed in a taper shape that guides liquid to a predetermined area, and the screw assembly portion 29 side is thicker in the direction perpendicular to the back surface than the claw fitting portion 25 side. It is formed in a tapered shape.
- the liquid that has entered the electronic control device 4 can reach the predetermined area without the electronic components. Can be guided. As shown in FIG. 15, the liquid that has entered through the gap between the claw fitting portion 25 and the claw portion 11 is guided to the screw assembly portion 29 by the induction-shaped fitting portion 28, and the electronic component 32 is not disposed. Fall from the area. Therefore, even if liquid enters the electronic control device 4 from the gap between the claw fitting portion 25 and the claw portion 11, the electronic component 32 is prevented from being wet, and a high waterproof effect is achieved with a simple configuration. Can do. (Sixth embodiment) The electronic control device of this embodiment is shown in FIG.
- the fitting portion 28 is an outer portion formed closer to the side inner wall surface of the housing portion 10 than the peripheral edge portion of the substrate 31.
- a wall surface 280 is provided.
- the outer wall surface 280 is preferably formed in parallel to the side inner wall surface of the accommodating portion 10.
- the inner side wall surface of the accommodating portion 10 may be formed parallel to the outer wall surface 280 of the fitting portion 28.
- a convex portion 281 may be formed on the side inner wall side of the accommodating portion 10 at the end portion of the fitting portion 28 on the substrate 31 side.
- the convex portion 281 is preferably formed closer to the inner side wall of the housing portion 10 than the peripheral edge of the substrate 31.
- the convex portion 281 may be formed as a convex wall continuous along the fitting portion 28 or may be formed at intervals.
- the fitting portion 28 of the electronic control device 6 has the outer wall surface 280 formed near the side inner wall surface of the housing portion 10 rather than the peripheral edge portion of the substrate 31. It is possible to guide the liquid that has entered from the gap with the fluid 20 so as to flow along the inner wall of the storage unit 10.
- the convex portion 281 in the fitting portion 28 it is possible to suppress the liquid from reaching the substrate 31 beyond the fitting portion 28. Therefore, the liquid can be prevented from falling on the substrate 31, and a high waterproof effect can be achieved with a simple configuration.
- the electronic control device of this embodiment is shown in FIG. Components that are substantially the same as those in the above embodiment are given the same reference numerals, and descriptions thereof are omitted.
- the accommodating portion 10 has at least one concave portion 121 and convex portion 122 on the side inner wall surface in the vicinity of the fitting portion 28 of the lid portion 20.
- the convex portion 122 it is preferable that there is a gap between the convex portion 122 and the fitting portion 28 so as to easily flow from the outer wall surface 280 of the fitting portion 28 to the side inner wall surface of the housing portion 10.
- the concave portion 121 and the convex portion 122 can be formed in various shapes, and may be any shape that increases the surface tension of the side inner wall surface of the accommodating portion 10 in the vicinity of the fitting portion 28.
- the storage unit 10 of the electronic control device 7 has at least one concave portion 121 and convex portion 122, the liquid that has entered from the gap between the storage unit 10 and the lid 20 is applied to the inner wall of the storage unit 10. Can be guided to flow along. Further, a gap is provided between the convex portion 122 and the fitting portion 28 so as to easily flow from the outer wall surface 280 of the fitting portion 28 to the side inner wall surface of the housing portion 10. The liquid flowing through the wall surface 280 is likely to flow to the side inner wall surface of the storage unit 10.
- FIG. 18 is a side view showing a part of the electronic control device 6 in a state in which the housing portion 10 and the connector 40 are removed. As shown in FIG. 18, the substrate 31 has a notch recess 33.
- the notch recess 33 is preferably formed in an area associated with the claw fitting portion 25 on the substrate 31 and having a width longer than the width of the claw portion 11. For example, it is preferable to form a notch having a width of 13 to 15 mm and a depth of 2 to 3 mm.
- a guide recess 282 is formed in the fitting portion 28.
- the guide recess 282 is formed such that the projection in the vertical direction is between the projection in the vertical direction of the claw portion 11 and the projection in the vertical direction of the substrate 31 having the notch recess 33.
- the guide recess 282 is preferably formed in the fitting portion 28 between a vertical line passing through the end of the claw portion 11 and a vertical line passing through the end of the notch recess 33.
- the guide recess 282 corresponds to a “dripping guide” in the claims.
- FIG. 19 is a three-dimensional schematic diagram showing the periphery of the notch recess 33 of the substrate 31.
- the substrate 31 of the electronic control device 8 of the present embodiment has a notch recess 33, so that liquid that has entered from between the claw fitting portion 25 and the claw portion 11 falls on the substrate 31. This can be suppressed and a high waterproof effect can be achieved with a simple configuration. Further, by forming the guide recess 282 between the vertical straight line passing through the end of the claw part 11 and the vertical straight line passing through the end of the notch recess 33, the liquid is further prevented from falling on the substrate 31. Can do.
- the electronic control device is arranged so that the lid portion is positioned on the upper side in the vertical direction from the housing portion, and the liquid dripping area is assumed on the surface of the lid portion.
- the electronic control device is arranged so that the bottom of the housing portion is positioned vertically above the lid portion, and liquid dripping is expected on the surface of the housing portion opposite to the housing space. An area may be assumed.
- the extending part first extending part, second extending part
- the specific isolation wall is formed on the side wall of the housing portion along the outline of the first standing portion or the housing portion fixing claw.
- two flow path forming portions are provided.
- three or more flow path forming portions may be formed.
- a guide groove may be formed between the flow path forming portions.
- the fitting portion is formed in a tapered shape.
- the fitting portion may be formed as a rod that connects the back surface of the claw fitting portion and the screw assembly portion.
- the fitting portion is preferably arranged closer to the control portion on the screw assembly portion side than on the claw fitting portion side.
- the fitting part may have a shape that allows the liquid to be guided from the claw fitting part side to the screw assembly part.
- the guide recess is formed in the fitting portion.
- a guide convex portion may be formed at the same position instead of the guide concave portion.
- the electronic control device forms a housing space between the housing portion as a case having an opening and a bottom portion and the housing portion by closing the opening of the housing portion.
- the lid portion or the lid portion or the coupling portion that fixes the lid portion to the accommodating portion, and the lid portion or the lid portion so as to extend outward from an abutting portion where the lid portion and an end surface of the peripheral edge of the opening abut.
- An extension part formed in the storage part and a control part provided in the storage space are provided.
- the extension part has a standing part that is erected toward the bottom part or the lid part and is formed so as to cover the contact part.
- a gap of a predetermined size is formed between the standing portion and the vicinity of the contact portion of the outer wall of the lid portion or the outer wall of the housing portion.
- the housing part and the lid part may be formed in a substantially rectangular shape.
- the extension portion, the standing portion, and the gap are opposed to at least one corner portion of the four corner portions of the housing portion or the lid portion. Thereby, it can suppress that a liquid permeates into the inside of an accommodating part from a corner part.
- the standing portion may be bent along the outer edge of the corner so as to cover the corner.
- the housing part and the lid part may be formed in a substantially rectangular shape.
- the extension part is a first extension part formed to face a corner part of the outer peripheral edge of the storage part or the lid part, and an adjacent corner of the storage part or the outer peripheral edge of the lid part. It has the 2nd extension part formed facing the side which connects parts.
- the first extension part is formed to extend outward from the second extension part, and the first extension part in which the standing part and the gap are formed, and the standing part has It has the 2nd expansion extension part only extended outside without being formed. Thereby, it can suppress effectively that a liquid permeates into the inside of an accommodating part from a corner.
- the electronic control device may further include a connector provided to face one of the outer peripheral edges of the housing portion and the lid portion.
- the first enlarged extension part is formed at two corners separated from the connector among the four corners of the housing part or the lid part.
- the second enlarged extension part is formed at two corners close to the connector among the four corners of the housing part or the lid part.
- the second extended extension portion may be formed such that an end portion on the connector side overlaps the connector. Thereby, it can suppress that a liquid penetrate
- the first enlarged extension portion may extend outward from the second enlarged extension portion. Therefore, it can suppress effectively that a liquid infiltrates into the inside of an accommodating part especially from the corners among the outer periphery of an accommodating part and a cover part.
- the lid portion or the accommodating portion may flow on the surface opposite to the accommodating space on the liquid dripping area where liquid dripping is expected, and the liquid in the liquid dripping area flows away from the coupling portion. You may have the isolation part formed so that it may do.
- the gap between the lid portion and the accommodating portion is easily formed in the vicinity of the coupling portion.
- the liquid dropped on the liquid dropping area flows while avoiding the coupling portion. Therefore, it is possible to suppress the liquid from entering the inside of the electronic control device from the gap near the coupling portion between the lid portion and the accommodating portion.
- the isolation part may include a flow path forming part protruding in a direction perpendicular to the surface on which the liquid dripping area is formed.
- the flow path forming portion is formed between the liquid dropping area and the coupling portion, and one end is formed above the other end in the liquid flow direction. Thereby, the liquid dripping area and the coupling portion are separated by the flow path forming portion, and it is possible to suppress the liquid dripped into the liquid dripping area from entering the inside of the electronic control device from the gap near the coupling portion.
- the isolation part may include a specific isolation part formed along the outline of the coupling part.
- the specific isolation part may be an isolation wall formed at a predetermined interval from the coupling part.
- the specific isolation part may be configured by an isolation table or an isolation groove. In any of such configurations, the liquid dropped into the liquid dropping area can be prevented from entering the inside of the electronic control device from the gap near the coupling portion.
- an isolation peripheral wall erected in the direction opposite to the accommodation space along the periphery may be formed on the surface of the bottom portion or the lid portion on the opposite side to the accommodation space.
- the isolation peripheral wall may have a plurality of drainage grooves.
- the drainage groove is preferably provided at a predetermined location.
- the predetermined location may be a location where the gap between the lid portion and the accommodating portion is covered, a location where the liquid discharged from the drainage groove does not affect other parts, and the like.
- the lid portion may have a fitting portion that fits into the accommodating portion on a surface opposite to the surface on which the liquid dripping area is formed.
- the fitting portion has a taper shape such that when liquid enters the storage space, the liquid is guided to a predetermined area in the storage space.
- the predetermined area is an area where no electronic component is arranged, and for example, a screw assembly portion or the like can be considered. Thereby, even if the liquid permeates into the inside of the electronic control device, the liquid is guided to the area where the electronic component is not arranged by the guide-shaped fitting portion, and water exposure of the electronic component can be suppressed.
- control unit may be formed by arranging electronic components on a substrate.
- the fitting portion has an outer wall surface formed at a position closer to the inner wall surface of the housing portion than the peripheral edge of the substrate.
- the side inner wall surface of the housing portion and the outer wall surface of the fitting portion may be adjacent to each other, and the gap where the liquid easily flows from the outer wall surface of the fitting portion to the side inner wall surface of the housing portion due to surface tension.
- the liquid on the outer wall surface of the fitting portion can easily flow to the inner side wall surface of the housing portion, and even if the liquid enters the inside of the electronic control device, the liquid is guided to flow along the inner wall of the housing portion. can do. Therefore, it can suppress that a liquid adheres to a board
- the end portion on the substrate side of the fitting portion may have a convex portion formed at a position closer to the inner wall surface of the housing portion than the peripheral edge of the substrate.
- the accommodating portion may have at least one concave portion and convex portion in the vicinity of the fitting portion of the lid portion on the inner wall surface.
- the gap between the side inner wall surface of the accommodating portion and the end portion on the substrate side of the fitting portion is reduced, and even if liquid enters the inside of the electronic control device, the liquid is gently aligned with the side inner wall surface of the accommodating portion. Flowing. Further, the liquid flows along the inner wall of the housing portion without being guided to the substrate side by the surface tension. Therefore, it is possible to suppress the liquid from adhering to the substrate.
- the substrate may have a cutout recess at a position corresponding to the coupling portion on the periphery.
- the fitting portion is formed with a dropping guide portion on both sides of a position corresponding to the coupling portion.
- the vertical projection of the drip guide is located outside the horizontal projection of the vertical projection of the substrate having the cutout recess.
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Abstract
Description
本実施形態の電子制御装置を図1~図6に示す。本実施形態の電子制御装置は、例えば車両のEPSに用いられ、操舵トルク信号及び車速信号に基づいて、操舵のアシスト力を発生するモータを駆動制御するものである。
(第2実施形態)
本実施形態の電子制御装置を図7、8及び9に示す。上記形態と実質的に同一の構成部分には同一の符号を付し、説明を省略する。
(第3実施形態)
本実施形態の電子制御装置を図10、11、及び12に示す。上記形態と実質的に同一の構成部分には同一の符号を付し、説明を省略する。図10及び11に示すように、本実施形態の蓋部20の表面には、爪嵌合部25の輪郭に沿った隔離壁261が形成されている。隔離壁261は、蓋部20の表面に露出されている爪部11を完全に囲むように形成することが好ましい。この隔離壁261は、図10に示すように、蓋部20の表面から裏面までに跨って、延出壁23の端部まで形成することが好ましい。
(第4実施形態)
本実施形態の電子制御装置を図13及び14に示す。上記形態と実質的に同一の構成部分には同一の符号を付し、説明を省略する。図13及び14に示すように、電子制御装置4の蓋部20の表面には、周縁に沿って隔離周壁24が表面に対し垂直な方向に立設されている。また、隔離周壁24と隔離壁261との間には、排水溝241が形成されている。この排水溝241は、他部品に影響しない位置に配置することが好ましい。図14に示すように、コネクタ40の両側にも排水溝240が形成されている。
(第5実施形態)
本実施形態の電子制御装置を図15に示す。上記形態と実質的に同一の構成部分には同一の符号を付し、説明を省略する。図15に示すように、嵌合部28は、液体を所定エリアまで誘導するテーパ状で形成され、爪嵌合部25側よりネジ組付け部29側が裏面に対し垂直な方向に肉厚であるテーパ状で形成されている。
(第6実施形態)
本実施形態の電子制御装置を図16に示す。上記形態と実質的に同一の構成部分には同一の符号を付し、説明を省略する。嵌合部28は、例えば図16の(a)及び(b)に示すように、嵌合部28は、基板31の周縁端部よりも収容部10の側方内壁面の近傍に形成する外壁面280を有する。このとき、液体が表面張力によって嵌合部28の外壁面280から収容部10の側方内壁面へ流れやすい程度の隙間を有することが好ましい。また、外壁面280は、収容部10の側方内壁面に平行に形成することが好ましい。逆に、収容部10の側方内壁面が嵌合部28の外壁面280に平行に形成してもよい。
(第7実施形態)
本実施形態の電子制御装置を図17に示す。上記形態と実質的に同一の構成部分には同一の符号を付し、説明を省略する。図17に示すように、収容部10は、蓋部20の嵌合部28の近傍にある側方内壁面に、少なくとも一つの凹部121及び凸部122を有する。凸部122と嵌合部28との間には、嵌合部28の外壁面280から収容部10の側方内壁面へ流れやすい程度の隙間を有することが好ましい。また、図17の(c)に示すように、複数の凹部121と複数の凸部122とを有することが好ましい。凹部121と凸部122とは、さまざまな形で形成することができ、嵌合部28の近傍にある収容部10の側方内壁面の表面張力を増大させる形状であればよい。
(第8実施形態)
本実施形態の電子制御装置を図18及び19に示す。上記形態と実質的に同一の構成部分には同一の符号を付し、説明を省略する。図18は、収容部10とコネクタ40とを取り外した状態の電子制御装置6の一部を示す側面図である。図18に示すように、基板31には切欠凹部33を有する。切欠凹部33は、基板31上において、爪嵌合部25に対応付けられているエリアに形成され、爪部11の幅よりも長い幅で形成することが好ましい。例えば、幅が13~15mm、深さが2~3mmである切欠口を形成することが好ましい。
(他の実施形態)
上記実施形態では、収容部より蓋部が鉛直方向上側に位置するよう電子制御装置を配置し、液体滴下エリアを蓋部の表面に想定した。他の実施形態では、蓋部より収容部の底部が鉛直方向上側に位置するよう電子制御装置を配置し、収容部の収容空間とは反対側の面に、液体の滴下が予想される液体滴下エリアを想定してもよい。この場合、延出部(第1延出部、第2延出部)、立設部、延出壁、隔離部、流路形成部、および隔離周壁は収容部に形成され、立設部は蓋部側に向いて形成される。また、特定隔離壁は、第1立設部または収容部固定爪の輪郭に沿って、収容部の側壁に形成される。
Claims (18)
- 電子制御装置は、
開口および底部を有するケースとしての収容部(10)と、
前記収容部(10)の前記開口を閉塞することで、前記収容部(10)との間に収容空間(15)を形成する蓋部(20)と、
前記蓋部(20)を前記収容部(10)に固定する結合部(11)と、
前記蓋部(20)と前記開口の周縁の端面とが当接する当接部(230)よりも外側に向かって延出するよう、前記蓋部(20)または前記収容部(10)に形成される延出部(221-224、231)と、
前記収容空間(15)に設けられる制御部(30)とを備え、
前記延出部(221-224、231)は、前記底部または前記蓋部側に向かって立設され、前記当接部(230)を覆うよう形成される立設部(234)を有し、
前記立設部(234)と前記蓋部(20)の外壁または前記収容部(10)の外壁のうち前記当接部(230)近傍との間には所定の大きさの間隙が形成されている。 - 請求項1に記載の電子制御装置において、
前記収容部(10)および前記蓋部(20)は略矩形状に形成され、
前記延出部(221-224、231)、前記立設部(234)および前記間隙は、前記収容部(10)または前記蓋部(20)の4つの隅部(232)のうち少なくとも1つの隅部(232)に対向している。 - 請求項2に記載の電子制御装置において、
前記立設部(234)は、前記隅部(232)を覆うよう、前記隅部(232)の外縁に沿って屈曲している。 - 請求項1~3のいずれか一項に記載の電子制御装置において、
前記収容部(10)および前記蓋部(20)は略矩形状に形成され、
前記延出部(221-224、231)は、前記収容部(10)または前記蓋部(20)の外周縁のうち隅部(232)に対向して形成される第1延出部(221-224)、および、前記収容部(10)または前記蓋部(20)の外周縁のうち隣り合う隅部同士を繋ぐ辺部に対向して形成される第2延出部(231)を有し、
前記第1延出部(221-224)は、前記第2延出部(231)よりも外側に延出するよう形成され、前記立設部(234)および前記間隙が形成された第1拡大延出部(221-222)、ならびに、前記立設部(234)が形成されることなく外側に延出のみした第2拡大延出部(223-224)を有する。 - 請求項4に記載の電子制御装置は、さらに、
前記収容部(10)および前記蓋部(20)の外周縁のうち1つの前記辺部に対向するよう設けられるコネクタ(40)を備え、
前記第1拡大延出部(221-222)は、前記収容部(10)または前記蓋部(20)の4つの隅部(232)のうち前記コネクタ(40)から離間した2つの隅部(232)に形成され、
前記第2拡大延出部(223-224)は、前記収容部(10)または前記蓋部(20)の4つの隅部(232)のうち前記コネクタ(40)に近接した2つの隅部(232)に形成されている。 - 請求項5に記載の電子制御装置において、
前記第2拡大延出部(223-224)は、前記コネクタ側の端部が前記コネクタ(40)と重なるよう形成されている。 - 請求項4~6のいずれか一項に記載の電子制御装置において、
前記第1拡大延出部(221-222)は、前記第2拡大延出部(223-224)よりも外側に延出している。 - 請求項1~7のいずれか一項に記載の電子制御装置において、
前記蓋部(20)または前記収容部(10)は、前記収容空間(15)とは反対側の面に、液体の滴下が予想される液体滴下エリア(100)、および、当該液体滴下エリア(100)の液体が前記結合部(11)を避けて流下するよう形成される隔離部(261-263)を有する。 - 請求項8に記載の電子制御装置において、
前記隔離部(261-263)は、前記液体滴下エリア(100)が形成される前記面に対して垂直な方向へ突起する流路形成部(26)を含み、
当該流路形成部(26)は、前記液体滴下エリア(100)と前記結合部(11)との間に形成され、一端は他端より液体流下方向の上側に形成される。 - 請求項8または9に記載の電子制御装置において、
前記隔離部(261-263)は、前記結合部(11)の輪郭に沿うよう形成される特定隔離部(261-263)を含む。 - 請求項10に記載の電子制御装置において、
前記特定隔離部(261-263)は、前記結合部(11)と所定間隔を置いて形成される隔離壁(261)である。 - 請求項1~11のいずれか一項に記載の電子制御装置において、
前記底部または前記蓋部(20)の前記収容空間(15)とは反対側の面には、周縁に沿って前記収容空間(15)と反対側方向に立設された隔離周壁(24)が形成される。 - 請求項12に記載の電子制御装置において、
前記隔離周壁(24)は、複数の排水溝(240)を有する。 - 請求項1~13のいずれか一項に記載の電子制御装置において、
前記蓋部(20)は前記液体滴下エリア(100)が形成される前記面とは反対側の面に前記収容部(10)に嵌る嵌合部(28)を有し、
当該嵌合部(28)は、液体が前記収容空間(15)に浸入した場合、液体が前記収容空間内の所定エリアまで誘導されるようなテーパ状である。 - 請求項14に記載の電子制御装置において、
前記制御部(30)は、電子部品を基板(31)に配置することで形成され、
前記嵌合部(28)は、前記基板(31)の周縁よりも前記収容部(10)の内壁面に近い位置に形成されている外壁面を有する。 - 請求項14または15に記載の電子制御装置において、
前記嵌合部(28)の前記基板側の端部は、前記基板(31)の周縁よりも前記収容部(10)の内壁面に近い位置に形成されている凸部(281)を有する。 - 請求項14~16のいずれか一項に記載の電子制御装置において、
前記収容部(10)は、内壁面のうち前記蓋部(20)の前記嵌合部(28)の近傍に少なくとも一つの凹部(121)および凸部(122)を有する。 - 請求項15~17のいずれか一項に記載の電子制御装置において、
前記基板(31)は周縁に前記結合部(11)に対応する位置に切欠凹部(33)を有し、
前記嵌合部(28)は、前記結合部(11)と対応する位置の両側に滴下誘導部(282)が形成され、
当該滴下誘導部(282)の鉛直方向の投影は、前記切欠凹部(33)を有する前記基板(31)の鉛直方向の投影の水平方向の外側に位置する。
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KR1020117029466A KR101275904B1 (ko) | 2009-10-15 | 2010-09-27 | 전자 제어 장치 |
US13/202,848 US8632139B2 (en) | 2009-10-15 | 2010-09-27 | Electric control device |
CN201080013101.2A CN102361778B (zh) | 2009-10-15 | 2010-09-27 | 电控装置 |
DE112010004035T DE112010004035T5 (de) | 2009-10-15 | 2010-09-27 | Elektrische Steuervorrichtung |
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2010
- 2010-09-02 JP JP2010196751A patent/JP5177710B2/ja not_active Expired - Fee Related
- 2010-09-27 US US13/202,848 patent/US8632139B2/en not_active Expired - Fee Related
- 2010-09-27 WO PCT/JP2010/005783 patent/WO2011045899A1/ja active Application Filing
- 2010-09-27 KR KR1020117029466A patent/KR101275904B1/ko active IP Right Grant
- 2010-09-27 MY MYPI2011004521 patent/MY152370A/en unknown
- 2010-09-27 CN CN201080013101.2A patent/CN102361778B/zh not_active Expired - Fee Related
- 2010-09-27 DE DE112010004035T patent/DE112010004035T5/de not_active Withdrawn
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JP2004356524A (ja) * | 2003-05-30 | 2004-12-16 | Keihin Corp | 電子回路基板の収容ケース |
JP2006253262A (ja) * | 2005-03-09 | 2006-09-21 | Denso Corp | 電子機器用筺体 |
Also Published As
Publication number | Publication date |
---|---|
CN102361778A (zh) | 2012-02-22 |
KR101275904B1 (ko) | 2013-06-17 |
US20110304248A1 (en) | 2011-12-15 |
MY152370A (en) | 2014-09-15 |
JP5177710B2 (ja) | 2013-04-10 |
US8632139B2 (en) | 2014-01-21 |
KR20120016645A (ko) | 2012-02-24 |
DE112010004035T5 (de) | 2012-12-27 |
CN102361778B (zh) | 2014-02-26 |
JP2011103446A (ja) | 2011-05-26 |
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