WO2022209006A1 - 電子制御装置 - Google Patents
電子制御装置 Download PDFInfo
- Publication number
- WO2022209006A1 WO2022209006A1 PCT/JP2021/044083 JP2021044083W WO2022209006A1 WO 2022209006 A1 WO2022209006 A1 WO 2022209006A1 JP 2021044083 W JP2021044083 W JP 2021044083W WO 2022209006 A1 WO2022209006 A1 WO 2022209006A1
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- WO
- WIPO (PCT)
- Prior art keywords
- connector
- power
- terminal
- wall
- electronic control
- Prior art date
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 83
- 238000004382 potting Methods 0.000 claims abstract description 61
- 238000007789 sealing Methods 0.000 claims abstract description 60
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000005192 partition Methods 0.000 claims description 32
- 230000013011 mating Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 15
- 230000004048 modification Effects 0.000 description 15
- 238000012986 modification Methods 0.000 description 15
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 229920005989 resin Polymers 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/5216—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases characterised by the sealing material, e.g. gels or resins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/521—Sealing between contact members and housing, e.g. sealing insert
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6683—Structural association with built-in electrical component with built-in electronic circuit with built-in sensor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
-
- 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
Definitions
- the present invention relates to an electronic control device.
- Patent Document 1 discloses a water temperature sensor in which a heat-sensitive element is connected to an external terminal plate via a signal lead wire covered with an insulating tube.
- the water temperature sensor of Patent Document 1 is configured by assembling a resin case containing the heat-sensitive element to a connector portion in which the lead wire for drawing out the signal and the external terminal plate are molded.
- the external terminal plate is molded with a resin material so that the tip serves as a connection terminal.
- the coefficient of linear expansion differs between the external terminal plate and the molded resin. Therefore, in the water temperature sensor of Patent Document 1, a gap is generated at the interface between the external terminal plate and the resin material due to repeated temperature changes, and water entering the resin case through this gap causes a short circuit. There is a risk that
- the connector portion of the electronic control device comprises a plurality of connector terminals electrically connected to a circuit board and a potting agent for sealing the periphery of the base side of the connector terminals. and a concave portion positioned between the connector terminals, the bottom surface of the concave portion being positioned closer to the base of the connector terminal than the top portion of the sealing portion.
- the connector section has an airtight structure (liquid-tight structure) that prevents water from entering from the root side of the connector terminal to the circuit board side by means of the sealing section. can suppress the occurrence of a short circuit.
- FIG. 1 is an exploded perspective view of an electronic control device to which the present invention is applied;
- FIG. FIG. 2 is a perspective view of the connector terminal assembly of the first embodiment;
- FIG. 2 is a plan view of the connector terminal assembly of the first embodiment;
- FIG. 4 is a cross-sectional view corresponding to a position along line AA in FIG. 3;
- the top view which shows the modification of the connector for power supplies in 1st Example.
- FIG. 9 is a cross-sectional view corresponding to a position along line BB in FIG. 8;
- FIG. 14 is a cross-sectional view corresponding to a position along line CC of FIG. 13; The perspective view which shows the modification of the connector for power supplies in 3rd Example. The top view which shows the modification of the connector for power supplies in 3rd Example. Sectional drawing of the principal part of the power connector in 4th Example.
- FIG. 1 is an exploded perspective view of an electric actuator device 1 of an electric power steering device to which the present invention is applied.
- the electric actuator device 1 corresponds to an electronic control device.
- the basic configuration of the electric actuator device 1 is the same as that disclosed in, for example, Japanese Patent Application Laid-Open No. 2020-148639.
- the electric actuator device 1 assists torque when a steering wheel (not shown) is rotated, and provides a steering assist force to a steering mechanism (not shown) of a vehicle (not shown). be.
- the electric actuator device 1 has an electric motor section 2 and an electronic control section 3 .
- the electronic control unit 3 calculates a steering assist force (driving operation amount) to be generated in the electric motor unit 2 based on, for example, a detected value of a torque sensor (not shown), and controls the operation of the electric motor unit 2 .
- the electric motor unit 2 generates a steering assist force (driving operation amount) based on, for example, a detected value of a torque sensor. That is, the electronic control section 3 controls driving of the electric motor section 2 .
- the electric motor unit 2 has an electric motor (for example, a three-phase AC motor) (not shown) having a plurality of independent windings, and a cylindrical motor housing 4 in which the electric motor is housed. That is, the electric motor section 2 has a motor housing 4 and the electric motor. Further, the electric motor unit 2 has a drive control system for each winding of the electric motor.
- an electric motor for example, a three-phase AC motor
- a cylindrical motor housing 4 in which the electric motor is housed. That is, the electric motor section 2 has a motor housing 4 and the electric motor. Further, the electric motor unit 2 has a drive control system for each winding of the electric motor.
- the motor housing 4 is made of a metal material such as aluminum alloy.
- a tip side (one end side) of the rotating shaft 5 of the electric motor protrudes from the motor housing 4 . That is, in the electric motor section 2, the tip of the rotating shaft 5 protrudes from one end side of the motor housing 4 as the output shaft 6 of the electric motor. Rotational torque of the output shaft 6 of the electric motor is transmitted to the steering wheel and assists the torque when rotating the steering wheel.
- the motor housing 4 functions as a heat sink member that releases heat generated by the electric motor and heat generated by the power supply circuit section 9 and the power conversion circuit section 10, which will be described later, to the outside air.
- the electronic control unit 3 is attached to the motor housing 4 so as to be adjacent to the end face portion 7 on the other end side where the output shaft 6 of the electric motor does not protrude.
- the end surface portion 7 is formed integrally with the motor housing 4 .
- the end face portion 7 may be formed separately from the motor housing 4 and integrated with the motor housing 4 by bolts or welding.
- the electronic control unit 3 is arranged on the other end side of the motor housing 4 .
- the electronic control unit 3 has a metal cover 8 made of a metal material such as an aluminum alloy.
- the metal cover 8 is fixed to the end face portion 7 of the motor housing 4 by adhesive, welding, or fixing bolts at one end face facing the motor housing 4 .
- the electronic control unit 3 includes a power supply circuit unit 9 that generates necessary power, a power conversion circuit unit 10 that includes power switching elements such as MOSFETs or IGBTs that drive and control the electric motor of the electric motor unit 2, A control circuit unit 11 for controlling the power switching elements of the power conversion circuit unit 10, a lid member 12 for pressing (urging) the power conversion circuit unit 10 toward the end face portion 7 of the motor housing 4, and a connector head member. and a connector terminal assembly 13 as.
- the power supply circuit section 9 and the control circuit section 11 are connected via a connecting section 14 . That is, the power supply circuit section 9 and the control circuit section 11 form a single circuit board (multilayer circuit board) that is bent into a substantially U shape at the connecting portion 14 .
- the connector terminal assembly 13 in FIG. 1 is shown attached to the control circuit section 11 for convenience.
- the power supply circuit section 9 , power conversion circuit section 10 , control circuit section 11 , lid member 12 and connector terminal assembly 13 are housed inside the metal cover 8 .
- the electronic control unit 3 is arranged in the order of the power conversion circuit unit 10, the lid member 12, the power supply circuit unit 9, the control circuit unit 11, and the connector terminal assembly 13 in the direction away from the end face portion 7 of the motor housing 4. It is
- the control circuit section 11 generates control signals for driving the switching elements of the power conversion circuit section 10, and is composed of, for example, a microcomputer, peripheral circuits, and the like.
- the control circuit unit 11 calculates the steering assist force (driving operation amount) of the electric motor based on the detected value of the torque sensor.
- the power supply circuit section 9 generates a power supply for driving the control circuit section 11 and a power supply for the power conversion circuit section 10, and is composed of, for example, a capacitor, a coil, a switching element, and the like.
- the power conversion circuit unit 10 adjusts the power flowing through the coils of the electric motor, and is composed of, for example, switching elements that constitute three-phase upper and lower arms.
- the power conversion circuit unit 10 drives the electric motor with a power switching element based on the steering assist force (driving operation amount) calculated by the control circuit unit 11 .
- the lid member 12 is positioned between the power conversion circuit section 10 and the power supply circuit section 9 and is attached to the end surface portion 7 of the motor housing 4 .
- the lid member 12 has a peripheral edge portion 12a having an elastic function on its outer periphery. The lid member 12 presses the power conversion circuit section 10 toward the heat dissipation section 7a formed on the end surface portion 7 of the motor housing 4 by the peripheral edge section 12a, thereby pressing the power conversion circuit section 10 against the heat dissipation section 7a.
- the metal cover 8 has the function of housing the power conversion circuit section 10, the lid member 12, the power supply circuit section 9 and the control circuit section 11 and sealing them watertightly.
- the metal cover 8 is adhered and fixed to the motor housing 4 by, for example, a liquid gasket.
- This liquid gasket is generally a substance that is fluid at room temperature, and when it is applied to the joint surfaces, it dries or becomes uniform after a predetermined period of time, forming an elastic coating or an adhesive coating. Therefore, the joint portion made of this liquid gasket maintains watertightness and has a pressure resistance function.
- the metal cover 8 since the metal cover 8 is made of metal, it also has a function of dissipating heat generated by the power conversion circuit section 10, the power supply circuit section 9, and the like to the outside.
- the connector terminal assembly 13 is located between the control circuit section 11 and the metal cover 8.
- the connector terminal assembly 13 has a power connector 15 , a sensor input connector 16 and a communication connector 17 oriented in the same direction along the axial direction of the rotating shaft 5 .
- the power connector 15 is connected to a vehicle battery (not shown) that supplies power.
- the power connector 15 is positioned between the sensor input connector 16 and the communication connector 17 . That is, the power connector 15 is positioned in the center of the connector terminal assembly 13 .
- the sensor input connector 16 receives signals from sensors arranged on the steering mechanism side (eg, steering angle sensor, torque sensor, etc.).
- the communication connector 17 performs communication (for example, CAN communication) with other control equipment in the vehicle.
- the power connector 15, the sensor input connector 16, and the communication connector 17 protrude to the outside through the opening 8a of the metal cover 8.
- the present invention is applied to the power connector 15. That is, the power connector 15 corresponds to the connector section of the present invention.
- FIG. 2 to 4 show the connector terminal assembly 13 of the first embodiment to which the present invention is applied.
- FIG. 2 is a perspective view of the connector terminal assembly 13 of the first embodiment.
- FIG. 3 is a plan view of the connector terminal assembly 13 of the first embodiment.
- FIG. 4 is a cross-sectional view corresponding to a position along line AA in FIG. 2 and 3, for the sake of convenience, the connector terminal assembly 13 is shown without the potting agent, which will be described later.
- the power connector 15 is a connector head capable of supplying power. More specifically, the power connector 15 includes two power terminals 21 for power supply, a cylindrical outer wall 22 located on the outermost side, and two terminals formed to surround the power terminals 21. A peripheral wall 23 is provided.
- the power connector 15 is made of a resin material such as a synthetic resin in portions where electricity does not need to flow, such as the outer peripheral wall 22 and the terminal surrounding wall 23 .
- the power supply terminal 21 corresponds to a connector terminal electrically connected to the control circuit section 11 and the power supply circuit section 9 and is located on the inner peripheral side of the outer peripheral wall 22 and the terminal peripheral wall 23 .
- the outer peripheral wall 22 located on the outer peripheral side has a pair of wide side portions 22a along the direction in which the power terminals 21 are arranged, and a pair of narrow side portions 22b connected to the pair of wide side portions 22a. ing.
- the power connector 15 is formed in an outer shape that is elongated and substantially rectangular along the arrangement direction of the power terminals 21 in plan view of the connector terminal assembly 13 .
- the terminal surrounding wall 23 is located on the inner peripheral side of the outer peripheral wall 22, and is an annularly continuous projecting portion having a rectangular (rectangular) outer shape.
- the terminal surrounding wall 23 has a pair of wide side portions 23a along the longitudinal direction of the power terminal 21 and a pair of narrow side portions 23b connected to the pair of wide side portions 23a.
- the terminal surrounding wall 23 is set so that the amount of protrusion along the axial direction of the rotating shaft 5 is smaller than that of the outer peripheral wall 22 . That is, the tip of the terminal surrounding wall 23 is formed so as not to protrude outward beyond the tip of the outer peripheral wall 22 .
- a sealing portion (potting portion) 25 made of a potting agent is formed in an inner peripheral region surrounded by the terminal peripheral wall 23 .
- the terminal surrounding wall 23 forms a sealing portion 25, which is a region closed inward, on its inner peripheral side.
- the sealing portion 25 surrounds and seals the root side of the power supply terminal 21 .
- the potting agent is made of, for example, a resin material. The potting agent is injected (filled) into the inner peripheral region surrounded by the terminal surrounding wall 23 after the connector terminal assembly 13 as shown in FIGS. 2 and 3 is molded.
- the potting agent is injected up to the tip position (tip height) of the terminal surrounding wall 23 .
- a top portion 25 a (tip) of the sealing portion 25 is at the same height as the tip of the terminal surrounding wall 23 .
- the recess 26 is positioned between the outer peripheral wall 22 and the terminal peripheral wall 23 .
- the power connector 15 has the recess 26 in the area sandwiched between the outer peripheral wall 22 and the terminal peripheral wall 23 .
- the bottom surface 26 a of the recess 26 is located closer to the base of the power terminal 21 than the top portion 25 a of the sealing portion 25 .
- the top portion 25 a of the sealing portion 25 is located closer to the tip side of the power terminal 21 than the bottom surface 26 a of the recess portion 26 .
- the recess 26 is located inside the outer peripheral wall 22 and is recessed toward the power connector 15 in the connection direction of the power connector 15 (the connection direction between the power connector 15 and a connector connected to the power connector 15). I'm in. In other words, the tip of the terminal surrounding wall 23 protrudes from the bottom surface 26 a of the recess 26 .
- a sensor 27 capable of detecting the presence or absence of water in the recess 26 is arranged in the recess 26 . That is, the power connector 15 has a sensor 27 that can detect the presence or absence of water in the recess 26 .
- the sensor 27 may detect water, for example, when water begins to accumulate in the recess 26, or may detect water, for example, when a predetermined amount of water accumulates in the recess 26. Since the sensor 27 can detect the presence or absence of water in the recess 26, when water enters the recess 26 when there is no water in the recess 26, the sensor 27 detects the entry of water into the recess 26. is also possible.
- the sensor 27 is, for example, a thermistor, and detects the presence or absence of water based on temperature changes and temperature differences.
- the recess 26 is an area where no potting agent exists.
- the sensor input connector 16 is a connector head capable of inputting signals from various sensors.
- the sensor input connector 16 has a signal terminal 31 to which signals from various sensors are input, and a tubular outer peripheral wall 32 .
- the communication connector 17 is, for example, a connector head used for outputting a current control state signal of the electric actuator device 1 .
- the communication connector 17 has a communication terminal 33 for exchanging communication signals with other control devices in the vehicle, and a cylindrical outer wall 34 .
- reference numeral 35 denotes a first positive terminal extending from the power connector 15. As shown in FIG. The two first positive terminals 35 are positive external terminals and are electrically connected to the power supply circuit section 9 .
- Reference numeral 36 in FIGS. 2 and 3 denotes a first negative terminal extending from the power connector 15. As shown in FIG. The two first negative terminals 36 are negative external terminals and are electrically connected to the power supply circuit section 9 .
- the two first positive terminals 35 and the two first negative terminals 36 enable power supply to the electric motor section 2 in two systems.
- Reference numeral 37 in FIG. 4 denotes a second positive electrode terminal extending from the power connector 15 .
- the second positive terminal 37 is a positive external terminal and is electrically connected to the control circuit section 11 .
- Reference numeral 38 in FIG. 4 denotes a second negative terminal extending from the power connector 15 .
- the second negative terminal 38 is a negative external terminal and is electrically connected to the control circuit section 11 .
- the first positive terminal 35 and the second positive terminal 37 are branched from the power connector 15 .
- the first negative terminal 36 and the second negative terminal 38 are branched from the power connector 15 .
- the second positive terminal 37 and the second negative terminal 38 may be omitted. In this case, power may be supplied to the control circuit section 11 via the power supply circuit section 9 and the connecting section 14 .
- Reference numeral 39 in FIGS. 2 to 4 denotes a guide protrusion that serves as a guide when connecting an external terminal (not shown) to the power connector 15.
- FIG. 39 denotes a guide protrusion that serves as a guide when connecting an external terminal (not shown) to the power connector 15.
- the power connector 15 of the first embodiment described above has an airtight structure in which the sealing portion 25 prevents water from entering from the base side of the power terminal 21 to the side of the circuit board having the control circuit portion 11, the power circuit portion 9, and the like. (liquid-tight structure). Therefore, the power connector 15 of the first embodiment can suppress the occurrence of a short circuit on the circuit board due to water that has entered inside.
- the power connector 15 has recesses 26 formed between the plurality of power terminals 21 .
- the recess 26 can store water that has entered the power connector 15 .
- the concave portion 26 can prevent a small amount of water entering the power connector 15 from spreading in a thin film between the power terminals 21 and short-circuiting the power terminals 21 .
- the concave portion 26 can store (hold) water that has entered the power connector 15, even if water enters the power connector 15, the power terminals 21 will not be short-circuited. period can be lengthened.
- the power connector 15 has a non-potting area in which the concave portion 26 is not filled with the potting agent.
- the power connector 15 can reduce the amount of potting agent used as a whole.
- the power connector 15 has a sensor 27 capable of detecting the presence or absence of water in the concave portion 26, the risk of short circuit is detected before the power terminals 21 are short circuited due to the intruding water. becomes possible. That is, the connector terminal assembly 13 can avoid a short circuit between the power terminals 21 caused by water entering the power connector 15 .
- the power connector 15 in the first embodiment may be formed so that the power terminals 21 are arranged in a plurality of rows.
- 5 and 6 show an example (modification of the first embodiment) in which six power terminals 21 are arranged in two rows in the power connector 15 of the first embodiment described above.
- FIG. 5 is a perspective view of a power connector 15 having two rows of power terminals 21.
- FIG. 6 is a plan view of the power connector 15 having two rows of power terminals 21.
- FIG. 5 and 6 show the power connector 15 without the potting agent.
- terminal surrounding walls 23 are formed around all the power terminals 21 .
- the inner peripheral side area of all the terminal surrounding walls 23 is a sealing portion 25 (potting area) filled with a potting agent.
- the area on the outer peripheral side of the terminal surrounding wall 23 is a concave portion 26 (non-potting area) that is not filled with the potting agent.
- FIG. 7 A second embodiment of the present invention will be described with reference to FIGS. 7 to 9.
- FIG. 7 A second embodiment of the present invention will be described with reference to FIGS. 7 to 9.
- FIGS. 7 and 8 show the connector terminal assembly 13 without the potting agent.
- the connector terminal assembly 13 of the second embodiment has substantially the same structure as that of the first embodiment described above, but the power connector 15 does not have the terminal surrounding wall 23, and the power connector 15 does not have the terminals. Instead of the peripheral wall 23, it has an inner wall 41 forming a recess 26 on the inner peripheral side.
- the inner wall 41 is located on the inner peripheral side of the outer peripheral wall 22, and is a continuous annular protrusion having a rectangular (rectangular) outer shape.
- the inner wall 41 has a pair of first side portions 41a along the longitudinal direction of the power terminal 21 and a pair of second side portions 41b connected to the pair of first side portions 41a.
- the pair of first side portions 41 a correspond to partition walls facing the power terminals 21 and are equal in number to the power terminals 21 .
- the inner wall 41 is set so that the amount of protrusion along the axial direction of the rotating shaft 5 is smaller than that of the outer peripheral wall 22 . That is, the tip of the inner wall 41 is formed so as not to protrude outward beyond the tip of the outer peripheral wall 22 .
- a region on the outer peripheral side of the inner wall 41 serves as a potting region filled with a potting agent.
- the potting agent is made of, for example, a resin material.
- a sealing portion 25 and a passage portion 42 are formed in the potting area.
- the sealing portion 25 surrounds and seals the base side of the power supply terminal 21 .
- the passage portion 42 is formed between the outer peripheral wall 22 and the second side portion 41 b of the inner wall 41 . That is, the sealing portion 25 is formed between the first side portion 41 a and the power terminal 21 , and the passage portion 42 is formed between the second side portion 41 b and the outer peripheral wall 22 .
- the sealing portion 25 in the second embodiment is continuous with the adjacent sealing portion 25 via the passage portion 42 .
- the top portion 25 a of the sealing portion 25 is located at the same position as the top portion of the passage portion 42 in the axial direction of the rotating shaft 5 . That is, the passage portion 42 is formed so that the top portion thereof is at the same height position as the top portion 25 a of the sealing portion 25 .
- the potting agent is injected (filled) into the region on the outer peripheral side of the inner wall 41 after the connector terminal assembly 13 as shown in FIGS. 7 and 8 is molded.
- the potting agent is injected up to the tip position (tip height) of the inner wall 41 .
- a top portion 25 a (tip) of the sealing portion 25 is at the same height as the tip of the inner wall 41 .
- first side portion 41a is positioned closer to the power terminal 21 than the central position between the opposing power terminals 21 .
- the first side portion 41 a forms the sealing portion 25 between the power terminals 21 without including the central position between the power terminals 21 facing each other.
- the inner wall 41 forms a recess 26 which is a closed area on its inner peripheral side.
- the recess 26 is positioned between the pair of power terminals 21 .
- the area surrounded by the inner wall 41 is the recess 26 .
- the bottom surface 26 a of the recess 26 is located closer to the base of the power terminal 21 than the top portion 25 a of the sealing portion 25 .
- the top portion 25 a of the sealing portion 25 is located closer to the tip side of the power terminal 21 than the bottom surface 26 a of the recess portion 26 .
- the recess 26 is located inside the outer peripheral wall 22 and is recessed toward the power connector 15 in the connection direction of the power connector 15 (the connection direction between the power connector 15 and a connector connected to the power connector 15). I'm in. In other words, the tip of the inner wall 41 protrudes from the bottom surface 26 a of the recess 26 .
- the recess 26 is an area where no potting agent exists.
- the sealing portion 25 is continuous with the adjacent sealing portion of the power terminal 21 through the passage portion 42 formed between the outer peripheral wall 22 and the inner wall 41 .
- the power connector 15 in the second embodiment may be formed so that the power terminals 21 are arranged in a plurality of rows.
- 10 and 11 show an example (modification of the second embodiment) in which six power terminals 21 are arranged in two rows in the power connector 15 of the second embodiment described above.
- FIG. 10 is a perspective view of a power connector 15 having two rows of power terminals 21.
- FIG. 11 is a plan view of a power connector 15 having two rows of power terminals 21.
- FIG. 10 and 11 show the power connector 15 in a state in which the potting agent is not injected for the sake of convenience.
- an inner wall 41 is formed on the inner peripheral side of the outer peripheral wall 22 and between the power terminals 21.
- the inner wall 41 includes a plurality (six) of first side portions 45a along the longitudinal direction of the power terminal 21, a plurality of (four) second side portions 45b along the longitudinal direction of the power terminal 21, and a power source.
- An annular shape having a plurality (eight) of third side portions 45c along the width direction of the terminal 21 and a plurality (two) of fourth side portions 45d along the width direction of the power supply terminal 21. is a protruding part that is continuous with the
- the first side portion 45a is positioned between the pair of power supply terminals 21 facing each other.
- the second side portion 45 b faces the outer peripheral wall 22 .
- the third side portion 45c is positioned between adjacent power terminals 21 .
- the fourth side portion 45 d faces the outer peripheral wall 22 .
- a region on the outer peripheral side of the inner wall 41 serves as a potting region filled with a potting agent.
- a sealing portion 25 and a passage portion 42 are formed in the potting area.
- the area on the inner peripheral side of the inner wall 41 is a recess 26 (non-potting area) that is not filled with the potting agent.
- the sealing portion 25 surrounds and seals the base side of the power supply terminal 21 .
- passages 42 are formed between the second side portion 45b and the outer peripheral wall 22 and between the fourth side portion 45d and the outer peripheral wall 22. As shown in FIG.
- the inner wall 41 forms recesses 26 between the power terminals 21 .
- FIG. 12 A third embodiment of the present invention will be described with reference to FIGS. 12 to 14.
- FIG. 12 A third embodiment of the present invention will be described with reference to FIGS. 12 to 14.
- FIG. 12 to 14 show a connector terminal assembly 13 of a third embodiment to which the present invention is applied.
- FIG. 12 is a perspective view of the connector terminal assembly 13 of the third embodiment.
- FIG. 13 is a plan view of the connector terminal assembly 13 of the second embodiment.
- 14 is a cross-sectional view corresponding to a position along line CC in FIG. 13.
- FIG. 12 and 13, for the sake of convenience, the connector terminal assembly 13 is shown without the potting agent being injected.
- the connector terminal assembly 13 of the third embodiment has substantially the same structure as that of the first embodiment described above, but the power connector 15 does not have the terminal surrounding wall 23, and the power connector 15 does not have the terminals. It has a partition wall 51 instead of the surrounding wall 23 .
- the partition walls 51 are opposed to the power terminals 21 and are the same in number as the power terminals 21 .
- the partition wall 51 is a linear protrusion positioned between the pair of power terminals 21 and has both ends connected to the outer peripheral wall 22 . That is, the inner peripheral side of the outer peripheral wall 22 includes two first regions R1 surrounded by the outer peripheral wall 22 and one partition wall 51 and one second region R1 surrounded by the outer peripheral wall 22 and two partition walls 51. R2 and .
- One power supply terminal 21 is positioned in the first region R1.
- the power terminal 21 is not located in the second region R2.
- Both the first region R ⁇ b>1 and the second region R ⁇ b>2 are regions located on the inner peripheral side of the outer peripheral wall 22 .
- the partition wall 51 is set so that the amount of protrusion along the axial direction of the rotating shaft 5 is smaller than that of the outer peripheral wall 22 .
- the tip of the partition wall 51 is formed so as not to protrude beyond the tip of the outer peripheral wall 22 .
- the first region R1 is a potting region filled with a potting agent and serves as a sealing portion 25.
- the sealing portion 25 surrounds and seals the root side of the power supply terminal 21 .
- the second region R2 is a non-potting region that is not filled with a potting agent, and serves as a recess 26.
- the recessed portion 26 is positioned between the pair of partition walls 51 .
- the area between the pair of partition walls 51 is the recess 26 .
- the bottom surface 26 a of the recess 26 is located closer to the base of the power terminal 21 than the top portion 25 a of the sealing portion 25 .
- the top portion 25 a of the sealing portion 25 is located closer to the tip side of the power terminal 21 than the bottom surface 26 a of the recess portion 26 .
- the potting agent is injected (filled) into the first region R1 after the connector terminal assembly 13 as shown in FIGS. 12 and 13 is molded.
- the potting agent is injected up to the tip position (tip height) of the partition wall 51 .
- a top portion 25 a (tip) of the sealing portion 25 is at the same height as the tip of the partition wall 51 .
- the partition wall 51 is located closer to the power terminal 21 than the central position between the opposing power terminals 21 .
- the partition wall 51 forms the sealing portion 25 between the power terminals 21 without including the central position between the power terminals 21 facing each other.
- the recessed portion 26 is positioned between the pair of partition walls 51 .
- the bottom surface 26 a of the recess 26 is located closer to the base of the power terminal 21 than the top portion 25 a of the sealing portion 25 .
- the top portion 25 a of the sealing portion 25 is located closer to the tip side of the power terminal 21 than the bottom surface 26 a of the recess portion 26 .
- the recess 26 is located inside the outer peripheral wall 22 and is recessed toward the power connector 15 in the connection direction of the power connector 15 (the connection direction between the power connector 15 and a connector connected to the power connector 15). I'm in. In other words, the tip of the partition wall 51 protrudes from the bottom surface 26 a of the recess 26 .
- the sealing portion 25 is an area surrounded by the outer peripheral wall 22 and the partition walls 51 having both ends connected to the outer peripheral wall 22 .
- the area sandwiched between the pair of partition walls 51 is the recess 26 .
- the power connector 15 in the third embodiment may be formed so that the power terminals 21 are arranged in a plurality of rows.
- 15 and 16 show an example (modification of the third embodiment) in which six power terminals 21 are arranged in two rows in the power connector 15 of the third embodiment described above.
- FIG. 15 is a perspective view of a power connector 15 having two rows of power terminals 21.
- FIG. 16 is a plan view of a power connector 15 having two rows of power terminals 21.
- FIG. For convenience, FIGS. 15 and 16 show the power connector 15 without the potting agent.
- partition walls 51 are formed on the inner peripheral side of the outer peripheral wall 22 , and these six partition walls 51 and the outer peripheral wall 22 form an inner wall of the outer peripheral wall 22 .
- Six sealing portions 25 and one concave portion 26 are formed.
- the partition wall 51 surrounds one power terminal 21 and has both ends connected to the outer peripheral wall 22 .
- a region surrounding the power terminal 21 is a sealing portion 25 (potting region) filled with a potting agent.
- a region where the partition walls 51 face each other is a recessed portion 26 (non-potting region) that is not filled with the potting agent.
- the recess 26 of the power connector 15 is not filled with the potting agent, but the recess 26 may be filled with the potting agent.
- FIG. 17 shows a fourth embodiment in which the recess 26 is filled with a potting agent, and is a cross-sectional view of the main part of the power connector 15 in the fourth embodiment.
- the power connector 15 of the fourth embodiment has substantially the same configuration as the power connector 15 of the first embodiment described above, but the bottom surface 26a of the concave portion 26 is closer to the power terminal than the top portion 25a of the sealing portion 25.
- a potting agent is filled in the concave portion 26 in a range located on the base side of the 21 . That is, the power connector 15 may fill the recesses 26 with the potting agent so that the bottom surfaces 26 a of the recesses 26 are located closer to the roots of the power terminals 21 than the tops 25 a of the sealing portions 25 .
- the recess 26 is formed around the sealing portion 25 so as to be one step lower.
- the potting agent in the sealing portion 25 may be connected to the potting agent in the concave portion 26 by the potting agent that runs over the terminal peripheral wall 23 .
- the bottom surface 26a of the recess 26 is located closer to the power terminal than the top 25a of the sealing section 25 in the second and third embodiments as well.
- a potting agent may be filled into the concave portion 26 in a range located on the root side of the portion 21 .
- the present invention is applicable not only to the power connector 15 of the connector terminal assembly 13, but also to the sensor input connector 16 and the communication connector 17.
- the electronic control unit has a connector section that connects with a mating connector, and the connector section includes a cylindrical outer wall located on the outermost side and a cylindrical outer wall located on the inner peripheral side of the outer peripheral wall. a plurality of connector terminals electrically connected to a circuit board; a sealing portion located on the inner peripheral side of the outer peripheral wall and made of a potting agent that surrounds and seals the periphery of the base side of the connector terminals; a recess located on the inner peripheral side of the outer peripheral wall, located between the connector terminals, and recessed toward the connector portion in a connecting direction of the connector terminals, the bottom surface of the recess It is positioned closer to the base of the connector terminal than the top of the stop portion.
- the recess is an area where no potting agent exists, that is, a non-potting area that is not filled with the potting agent.
- the electronic control unit may fill the recess with a potting agent so that the bottom surface of the recess is located closer to the base of the connector terminal than the top of the sealing portion.
- the electronic control device may have a partition wall facing the connector terminal and forming a boundary with the recess.
- the number of the partition walls is at least equal to the number of the connector terminals
- the sealing portion is formed between the partition walls and the connector terminals, and is positioned between the opposing connector terminals of the partition walls.
- the portion may be located closer to the connector terminals than the central position between the opposing connector terminals, and the sealing part may be formed without including the central position between the opposing connector terminals.
- the partition wall is a part of the inner wall forming the recess on the inner peripheral side, the inner wall is located on the inner peripheral side of the outer peripheral wall, and the sealing portion is the outer peripheral wall. It may be continuous with the sealing portion of the adjacent connector terminal through a passage portion formed between the wall and the inner wall.
- the electronic control unit may have a sensor in the connector section that can detect the presence or absence of water in the recess.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Abstract
Description
仕切り壁51は、一つの電源端子21の周囲を囲み、かつ両端が外周壁22に接続されている。
Claims (8)
- 相手側のコネクタと結合するコネクタ部を備えた電子制御装置において、
上記コネクタ部は、
外周側の外周壁と、
回路基板と電気的に接続された複数のコネクタ端子と、
上記コネクタ端子の根元側の周囲を封止するポッティング剤からなる封止部と、
上記コネクタ端子間に位置する凹部と、を有し、
上記凹部の底面は、上記封止部の頂部よりも上記コネクタ端子の根元側に位置する電子制御装置。 - 上記凹部は、ポッティング剤が存在しない領域である請求項1に記載の電子制御装置。
- 上記凹部には、上記封止部の頂部よりも上記コネクタ端子の根元側に底面が位置するようポッティング剤が充填される請求項1に記載の電子制御装置。
- 上記コネクタ端子の周囲を囲む端子周囲壁を有し、
上記端子周囲壁の内周側が上記封止部となっている請求項1に記載の電子制御装置。 - 上記コネクタ端子と対向する仕切り壁を有する請求項1に記載の電子制御装置。
- 上記仕切り壁は、少なくとも上記コネクタ端子と同数あり、
上記仕切り壁と上記コネクタ端子との間に上記封止部が形成され、
上記仕切り壁のうち対向するコネクタ端子間に位置する部分は、対向するコネクタ端子間の中央位置よりもコネクタ端子側に位置する請求項5に記載の電子制御装置。 - 上記仕切り壁は、内周側に上記凹部を形成する内側壁の一部であり、
上記封止部は、上記外周壁と上記内側壁との間に形成される通路部を介して隣接するコネクタ端子の封止部と連続している請求項5に記載の電子制御装置。 - 上記凹部の水の有無を検知可能なセンサを上記コネクタ部に有する請求項1に記載の電子制御装置。
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JP2023510223A JP7441375B2 (ja) | 2021-03-30 | 2021-12-01 | 電子制御装置 |
CN202180095567.XA CN116941141A (zh) | 2021-03-30 | 2021-12-01 | 电子控制装置 |
US18/547,808 US20240145985A1 (en) | 2021-03-30 | 2021-12-01 | Electronic control device |
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JP2021056604 | 2021-03-30 | ||
JP2021-056604 | 2021-03-30 |
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PCT/JP2021/044083 WO2022209006A1 (ja) | 2021-03-30 | 2021-12-01 | 電子制御装置 |
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US (1) | US20240145985A1 (ja) |
JP (1) | JP7441375B2 (ja) |
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WO (1) | WO2022209006A1 (ja) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0722480U (ja) * | 1993-09-24 | 1995-04-21 | 株式会社ワイエヌエス | 端末コネクタの端子封止構造 |
JPH11233190A (ja) * | 1998-02-19 | 1999-08-27 | Yazaki Corp | コネクタ用ハウジング |
JP2002025683A (ja) * | 2000-07-10 | 2002-01-25 | Sumitomo Wiring Syst Ltd | コネクタ |
JP2002151196A (ja) * | 2000-11-08 | 2002-05-24 | Yazaki Corp | 配線接続コネクタ |
JP2007087850A (ja) * | 2005-09-26 | 2007-04-05 | Jtekt Corp | 電子制御装置 |
JP2016054035A (ja) * | 2014-09-03 | 2016-04-14 | 日立オートモティブシステムズ株式会社 | コネクタ端子組立体及びこれを使用した電子制御装置及びこれを使用した電動パワーステアリング装置 |
JP2018014271A (ja) * | 2016-07-21 | 2018-01-25 | 浜井電球工業株式会社 | 屋外led電飾用整流器、およびそれを利用した屋外用led電飾装置 |
-
2021
- 2021-12-01 JP JP2023510223A patent/JP7441375B2/ja active Active
- 2021-12-01 CN CN202180095567.XA patent/CN116941141A/zh active Pending
- 2021-12-01 US US18/547,808 patent/US20240145985A1/en active Pending
- 2021-12-01 WO PCT/JP2021/044083 patent/WO2022209006A1/ja active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0722480U (ja) * | 1993-09-24 | 1995-04-21 | 株式会社ワイエヌエス | 端末コネクタの端子封止構造 |
JPH11233190A (ja) * | 1998-02-19 | 1999-08-27 | Yazaki Corp | コネクタ用ハウジング |
JP2002025683A (ja) * | 2000-07-10 | 2002-01-25 | Sumitomo Wiring Syst Ltd | コネクタ |
JP2002151196A (ja) * | 2000-11-08 | 2002-05-24 | Yazaki Corp | 配線接続コネクタ |
JP2007087850A (ja) * | 2005-09-26 | 2007-04-05 | Jtekt Corp | 電子制御装置 |
JP2016054035A (ja) * | 2014-09-03 | 2016-04-14 | 日立オートモティブシステムズ株式会社 | コネクタ端子組立体及びこれを使用した電子制御装置及びこれを使用した電動パワーステアリング装置 |
JP2018014271A (ja) * | 2016-07-21 | 2018-01-25 | 浜井電球工業株式会社 | 屋外led電飾用整流器、およびそれを利用した屋外用led電飾装置 |
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CN116941141A (zh) | 2023-10-24 |
US20240145985A1 (en) | 2024-05-02 |
JP7441375B2 (ja) | 2024-02-29 |
JPWO2022209006A1 (ja) | 2022-10-06 |
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