Source: https://patents.google.com/patent/JP2012070509A/en
Timestamp: 2020-01-24 07:38:58
Document Index: 548371828

Matched Legal Cases: ['art 23', 'art 24', 'art 25', 'arts 25', 'arts 23', 'art 25', 'art 23', 'art 24', 'art 23', 'art 24', 'arts 23', 'arts 23', 'arts 23', 'art 36', 'art 35', 'art)\n24']

JP2012070509A - Electronic control device - Google Patents
Electronic control device Download PDF
JP2012070509A
JP2012070509A JP2010211979A JP2010211979A JP2012070509A JP 2012070509 A JP2012070509 A JP 2012070509A JP 2010211979 A JP2010211979 A JP 2010211979A JP 2010211979 A JP2010211979 A JP 2010211979A JP 2012070509 A JP2012070509 A JP 2012070509A
JP2010211979A
Haruaki Motoda
晴晃 元田
2010-09-22 Application filed by Hitachi Automotive Systems Ltd, 日立オートモティブシステムズ株式会社 filed Critical Hitachi Automotive Systems Ltd
2010-09-22 Priority to JP2010211979A priority Critical patent/JP2012070509A/en
2012-04-05 Publication of JP2012070509A publication Critical patent/JP2012070509A/en
PROBLEM TO BE SOLVED: To provide a control device that suppresses the enlargement due to an increase of terminal pins for connecting a first circuit substrate and a second circuit substrate superposed on the first circuit substrate.SOLUTION: Multiple signal system terminal pins 22 connecting a power module 5 and a control module are respectively formed in a bent shape such that a power module side connection part 23 and a control module side connection part 24 are offset to an intermediate coupling part 25a. The intermediate coupling parts 25a of respective signal system terminal pins 22 are aligned in a line in a predetermined alignment direction. Opposed connection parts 23 and 24 of respective signal system terminal pins 22a and 22b are aligned in two lines by differing a mounting posture to a power module 6 of the pair of the signal system terminal pins 22, which are close to each other in the alignment direction, by 180° in the rotation direction with the intermediate coupling part 25a as a center.
The present invention relates to an electronic control device in which a first circuit board and a second circuit board are electrically connected by a plurality of terminal pins.
For example, as described in Patent Document 1, a control unit that is an electronic control unit of an electric power steering apparatus includes a power board as a first circuit board that drives an electric motor for steering assist, and is driven by the power board. A control board as a second circuit board that outputs a command, and the power board and the control board are electrically connected by connection terminals that are a plurality of terminal pins. The connection terminals are arranged so as to be aligned in a line on the power board in consideration of workability in mounting the connection terminals on the power board.
JP 2010-111248 A
When the connection terminals are arranged in a line on the power board as in the invention described in Patent Document 1, it is desirable to reduce the interval between the connection terminals in order to reduce the size of the control unit. In order to connect the connection terminals, it is necessary to provide a certain gap between the lands formed on the power board in terms of the manufacturing method, and the control unit becomes larger as the number of connection terminals increases. was there.
The present invention has been made in view of such problems, and an object of the present invention is to provide an electronic control device that suppresses an increase in size due to an increase in the number of terminal pins that connect the first circuit board and the second circuit board. Yes.
According to the present invention, an intermediate connection portion between the first circuit board side connection portion connected to the first circuit board and the second circuit board connection portion connected to the second circuit board among the terminal pins is provided as described above. The first circuit board and the second circuit board are arranged so as to be aligned in a line along a predetermined alignment direction, and at least some of the terminal pins have their terminals. The first circuit board side connection part of the pin is bent so as to be offset in a direction orthogonal to the alignment direction with respect to the first circuit board side connection part of another terminal pin adjacent to the terminal pin. It is said.
According to the present invention, the interval between the terminal pins can be reduced, and the increase in the size of the electronic control device due to the increase in the terminal pins can be suppressed.
The figure which shows the state which removed the cover member not shown from the electronic control apparatus as the 1st Embodiment of this invention. FIG. 2 is an exploded perspective view of the electronic control device shown in FIG. 1. AA sectional drawing of FIG. FIG. 3 is a perspective view showing a state in which a power lead frame and a signal lead frame are mounted on the power module shown in FIG. 2. The top view of the power module shown in FIG. BB sectional drawing of FIG. CC sectional drawing of FIG. DD sectional drawing of FIG. The figure which shows the state which mounted the signal type | system | group lead frame in the power module as the 2nd Embodiment of this invention. The figure which shows the state which mounted the signal type | system | group lead frame in the power module as the 3rd Embodiment of this invention. EE sectional drawing of FIG. The figure which shows the structure for fixing a signal system terminal pin holder with respect to a power module as the 4th Embodiment of this invention.
1 to 8 are views showing an electronic control device of a hydraulic power steering device used in an automobile as a more specific embodiment of the present invention, in which FIG. 1 shows a cover member (not shown) from the electronic control device. FIG. 2 is an exploded perspective view of the electronic control device shown in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line AA of FIG.
As shown in FIGS. 1 to 3, the electronic control device 1 drives and controls an electric motor for driving an oil pump in a hydraulic power steering device, and has excellent thermal conductivity, for example, represented by an aluminum alloy. A power module 5 serving as a first circuit board for generating a three-phase alternating current for driving an electric motor (not shown) is accommodated in a board housing recess 3 of the housing 2 formed of a metallic material. A control module 6 as a second circuit board for controlling a switching element 19 to be described later provided on the power module 5 is stacked and arranged at a predetermined interval. The control module 6 and the power module 5 are electrically connected by a signal system lead frame 7, while the power module 5 and a battery which is a DC power source (not shown) connect the power system lead frame 8 and the conductor module 9. It is designed to be connected via The housing 2 of the electronic control device 1 is shared with an electric motor (not shown), and a drive shaft insertion hole 4 into which a motor drive shaft (not shown) is inserted passes through the housing 2 in the axial direction. Is formed.
The control module 6 forms conductor patterns (not shown) on both the front and back surfaces of a resin plate 10 made of a non-conductive resin material represented by glass epoxy resin, and a large number of electronic components (not shown). 1) and is screwed to the control module mounting portion 2a of the housing 2 that protrudes outward from the opening end surface of the substrate housing recess 3 with a screw member (not shown). Although not shown, the control module 6 is housed in a cover member (not shown) that closes the substrate housing recess 3 of the housing 2.
The control module 6 is connected to an in-vehicle network represented by CAN via a signal connector 11, and exchanges data with control devices in various parts of the vehicle body. Then, a steering assist force generated by an electric motor (not shown) is calculated based on the driver's steering torque, vehicle speed, and the like, and is controlled via a signal system lead frame 7 to a switching element 19 described later provided in the power module 5. By sending a signal, the switching element 19 performs a desired switching operation, and the rotational speed, driving torque, and the like of an electric motor (not shown) are controlled. Reference numeral 12 in FIGS. 1 and 2 indicates a signal connector connecting portion formed by forming a plurality of connector through holes 12a for connecting the terminals 11a of the signal connector 11. Reference numeral 13 denotes a signal system lead frame connecting portion formed by forming a plurality of signal system terminal pin through holes 13a for connecting signal system terminal pins 22 to be described later in the signal system lead frame 7.
A conductor module 9 shown in FIGS. 2 and 3 is a power line formed by press-molding a copper plate inside a plate-like base portion 14 formed of a non-conductive resin integrally with a power connector 15 to which a battery (not shown) is connected. A plurality of bus bars are embedded, and are shown in a plurality of conductor module mounting portions 2b projecting at a height position between the power module 5 and the control module 6 in the substrate housing recess 3 of the housing 2. It is screwed with an external screw member. Then, a pair of power supply terminals 16 a and 16 b provided on the conductor module 9 are welded to a pair of power supply terminal pins 17 a and 17 b of the power lead frame 8, respectively. To supply.
A power lead frame 8 shown in FIGS. 2 and 3 is formed by bending a conductive metal plate represented by a copper plate by pressing, and is welded to both power supply terminals 16a and 16b of the conductor module 9, respectively. A pair of power supply terminal pins 17a and 17b and a conductive metal plate represented by a copper plate are bent by press working, and each phase (U phase, V Three motor connection terminal pins 20a, 20b, 20c connected to the coils of the phase and W phase, respectively, and fixed to the power module 5, and the terminal pins 17a, 17b, 20a, 20b, 20c are aligned in a line. And a power system terminal pin holder 21 for holding in the state.
The power module 5 shown in FIGS. 2 and 3 is provided with a plurality of switching elements 19 that are heat generating elements having a relatively large heat generation amount. Therefore, a metal material having a relatively good thermal conductivity in consideration of heat dissipation ( For example, a metal plate 18 made of an aluminum alloy is used as a base. One surface of the power module 5 is a component mounting surface 5a formed by forming a conductor pattern on the metal plate 18 via an insulating layer, and electronic components such as a plurality of switching elements 19 are mounted on the component mounting surface 5a. Yes. In the present embodiment, a MOSFET (field effect transistor) is used as each switching element 19.
Then, each switching element 19 performs a switching operation based on a control signal from the control module 6, thereby converting a direct current of a battery (not shown) into a three-phase alternating current, and converting the three-phase alternating current through the power lead frame 8. Thus, an electric motor (not shown) is supplied. Although illustration is omitted here, since a relatively large current flows through the power module 5, the metal foil forming the conductor pattern of the power module 5 is thicker than that of the control module 5. Is used.
On the other hand, the surface of the power module 5 opposite to the component mounting surface 5 a is configured as a cooling surface 5 b with the metal plate 18 exposed, and the power module 5 is formed at the bottom of the substrate housing recess 3 in the housing 2. The cooling surface 5b is seated on the formed flat power module mounting surface 2c, and is screwed to the housing 2 by a screw member (not shown). Although not shown, a thermal conductive grease is interposed between the power module mounting surface 2c of the housing 2 and the cooling surface 5b of the power module 5, and the heat generated from each switching element 19 is transferred to the thermal conductive grease. And a structure for radiating heat through the housing 2.
4 and 5 are diagrams showing the power module 5 in a state where the signal system lead frame 7, the power system lead frame 8 and each switching element 19 are mounted, and FIG. 4 is a perspective view of the power module 5. FIG. 5 is a plan view of the power module 5.
Specifically, as shown in FIGS. 4 and 5, the power module 5 has a substantially rectangular shape in plan view, and three switching elements 19 are provided at one end in the short side direction of the component mounting surface 5 a of the power module 5. Are arranged side by side along the long side direction of the power module 5, and the three switching elements 19 and the power system lead frame 8 are powered on the other end in the short side direction of the component mounting surface 5 a of the power module 5. It is provided along the long side direction of the module 5.
A signal system lead frame 7 is provided along the long side direction of the power module 5 at a substantially central portion in the short side direction of the component mounting surface 5 a of the power module 5. The signal system lead frame 7 has a plurality of signal system terminal pins 22 that electrically connect the control module 6 and the power module 5, and the signal system terminal pins 22 are arranged in a row with the long side direction of the power module 5 as the alignment direction. And a signal system terminal pin holder 26 for holding in an aligned state. Here, each signal system terminal pin 22 corresponds to the terminal pin of the present invention, and the signal system terminal pin holder 26 corresponds to the terminal pin holding member of the present invention.
6 to 8 are diagrams showing details of the signal system lead frame 7, in which FIG. 6 is a cross-sectional view taken along the line BB in FIG. 3, FIG. 7 is a cross-sectional view taken along the line CC in FIG. It is DD sectional drawing of.
As shown in FIGS. 6 to 8, each signal system terminal pin 22 is formed by bending a wire having a substantially rectangular cross section made of a conductive metal material such as a copper alloy by pressing, and both are the same. It is formed as a shape. Specifically, as shown in FIG. 7, each signal system terminal pin 22 includes a power module side connection portion 23, which is a first circuit side connection portion bent in a substantially L shape, and the power module side connection portion 23. A linear control module side connection portion 24 formed as a second circuit side connection portion on an extension line of a rising portion 23a rising substantially vertically from the power module 5, a power module side connection portion 23, and a control module side connection portion 24, Of the power module side connection portion 23 extending in a direction parallel to the power module 5 and bent in a substantially U-shape toward the opposite side of the contact portion 23b contacting the power module 5. And each.
On the other hand, as shown in FIGS. 6 to 8, the signal system terminal pin holder 26 is composed of a pair of legs 28 having one end fixed to both edges in the long side direction of the power module 5 and the other ends of the both legs 28. And a terminal pin holding surface 29c perpendicular to the power module 5 among the terminal pin holding portions 29 of the holder main body 27 (see FIG. 8). The holder main body 27 and the holder plate 30 are both formed of a non-conductive resin. 6 to 8 indicate windows formed in the holder main body 27 and the holder plate 30, respectively.
As shown in FIG. 8, the terminal pin holding surface 29 c of the terminal pin holding portion 29 is arranged in parallel with a predetermined pitch in the longitudinal direction of the terminal pin holding portion 29, and the power module 5 and the control module 6 are overlapped. A plurality of terminal pin fitting grooves 29a having a substantially U-shaped cross section extending in the direction and a plurality of projecting projections in the longitudinal direction of the terminal pin holding portion 29, and a plurality of mounting holes 30a penetratingly formed on the holder plate 30 side. Columnar protrusions 29b are formed.
The intermediate connection portions 25a extending in the overlapping direction of the power module 5 and the control module 6 among the bent portions 25 of the signal system terminal pins 22 are fitted into the respective terminal pin fitting grooves 29a, so that the intermediate connection In a state in which the rotation of each signal system terminal pin 22 around the portion 25a is restricted, the terminal pin holding portion 29 and the holder plate 30 of the holder main body 27 are inserted so that each protrusion 29b is inserted into each mounting hole 30a. Then, the holder plate 30 is fixed to the terminal pin holding portion 29 by applying heat caulking to each protruding portion 29b. Accordingly, each signal system terminal pin 22 is held by the signal system terminal pin holder 26 in a mounting posture with respect to the power module 5.
As shown in FIGS. 6 and 7, the signal system terminal pin holder 26 is attached to the power module 5 by a so-called snap-fit method by a fixing portion 31 formed at one end of each leg portion 28 of the holder main body 27. . The fixing portion 31 includes a flange portion 31a that sits on the component mounting surface 5a of the power module 5, a retaining claw portion 31b that engages with the cooling surface 5c of the power module 5, and a flange portion 31a and a claw portion 31b. A neck portion 31c having a reduced diameter formed therebetween, and the neck portions 21c of both leg portions 28 are respectively formed in recesses 5c (see FIG. 2) formed at both end edges in the long side direction of the power module 5, respectively. The outer peripheral edge of the recess 5c is received between the flange portion 31a and the claw portion 31b of both the leg portions 28 while being fitted. Then, by attaching the signal system terminal pin holder 26 to the power module 5 in this way, the power module side connection portions 23 of the signal system terminal pins 22 are formed on the pads formed on the power module 5 as shown in FIG. The signal lead frame 7 and the power module 5 are relatively positioned so as to come into contact with each of the 32. In addition, the code | symbol 2d of FIG.
Here, when the power module 5 and the control module 6 are electrically connected by the plurality of signal system terminal pins 22 arranged in a row in this way, it is possible to reduce the interval between the signal system terminal pins 22. This is desirable in reducing the size of the electronic control device 1 in the direction in which the terminal pins 22 are aligned. However, as well known, in addition to the pads 32 for connecting the signal system terminal pins 22 to the power module 5, the signal system terminal pin through holes 13 a are connected to connect the signal system terminal pins 22 to the control module 6. Since the land (not shown) formed in the periphery is formed by applying press processing or etching to the metal foil, the through-hole for the signal system terminal pins between the adjacent pads 32 and between the adjacent pads 32 due to the manufacturing method. It is necessary to secure a certain gap between the holes 13a in the alignment direction of the terminal pins 22, and the gap between the pads 32 and the gap between the signal system terminal pin through holes 13a are set to the terminal pins 22 respectively. There is a limit to the reduction in the alignment direction. In order to prevent the occurrence of so-called solder bridges, it is preferable to secure a certain gap in the alignment direction of the signal system terminal pins 22 between the pads 32 and between the signal system terminal pin through holes. .
Therefore, when the signal system terminal pins for connecting the power module and the control module are simply aligned in a line as in the invention described in Patent Document 1, the power module and the control module are connected to the signal system terminal pins. As the number increases, the size increases.
Therefore, in the present embodiment, as shown in FIGS. 4 and 8, the terminal pin dense portions A1 to A4 in which the interval between the signal system terminal pins 22 of the signal system lead frame 7 is minimized (see FIG. 8). 2, the mounting postures of the adjacent signal system terminal pins 22 with respect to the signal system terminal pin holder 26 are different from each other by 180 degrees in the rotation direction around the intermediate coupling portion 25 a (see FIG. 7). That is, in each of the terminal pin crowded portions A1 to A4, the signal system terminal pins 22 and the signal system terminal pins 22 each having the connection portions 23 and 24 directed to one side in a direction orthogonal to the alignment direction of the signal system terminal pins 22. The signal system terminal pins 22 having the connecting portions 23 and 24 facing the other side in the direction orthogonal to the alignment direction are alternately provided in the alignment direction of the signal system terminal pins 22. Thereby, the power module side connection portions 23 and the control module side connection portions 24 of the signal system terminal pins 22 adjacent to each other in the terminal pin dense portions A1 to A4 are orthogonal to the alignment direction of the signal system terminal pins 22. Are offset from each other. Further, both connection portions 23 and 24 of each signal system terminal pin 22 do not overlap with the signal system terminal pin holder 26 in a direction perpendicular to the power module 5.
The offset here means that the power module side connection part 23 and the control module side connection part 24 of the signal system terminal pin 22 are connected to the power module side connection part of another signal system terminal pin 22 adjacent to the signal system terminal pin 22. 23 and the control module side connection portion 24 are provided at positions shifted in the direction orthogonal to the alignment direction of the signal system terminal pins 22. In the present embodiment, the offset amount (deviation amount) is set such that adjacent power module side connection portions 23 do not overlap in the alignment direction of the signal system terminal pins 22.
In other words, one of the pair of terminal pins 22 adjacent in each of the terminal pin dense portions A1 to A4 is a pair of horizontal portions 25b and 25c extending in the horizontal direction to the power system substrate 5 among the bent portions 25 (FIG. 7). 2) is attached to the signal system terminal pin holder 26 in a posture toward the holder plate 30 side, and the other terminal pin 22 is a signal system terminal in a posture in which both horizontal portions 25b and 25c are directed to the terminal pin holding portion 29 side. The pin holder 26 is attached. In other words, each signal system terminal pin 22 of each of the terminal pin dense portions A1 to A4 has both connection sections 23 and 24 thereof and both connection sections 23 of other signal system terminal pins 22 adjacent to the signal system terminal pin 22. , 24 are bent so as to be offset in a direction orthogonal to the alignment direction of the signal system terminal pins 22.
With such a configuration, among the signal system terminal pins 22, the intermediate connection portions 25 a held by the signal system terminal pin holder 26 are aligned in a row, while the connection sections 23 and 24 of the signal system terminal pins 22 are arranged in a row. The signal system terminal pin holders 26 are arranged in two rows, respectively. That is, each pad 32 of the power module 5 and each signal system terminal pin through-hole 13a of the control module 6 are formed in two rows at predetermined intervals in a direction orthogonal to the alignment direction of each signal system terminal pin 22. It becomes possible.
When the signal system lead frame 7 configured as described above is connected to the power module 5 and the control module 6, first, the signal system lead frame 7 is mounted on the power module 5 before the power module 5 is attached to the housing 2. To do. That is, by fixing the signal system terminal pin holder 26 to the power module 5 as described above, the power module side connection portion 23 of each signal system terminal pin 22 is brought into contact with each pad 32 of the power module 5. The power module side connection portions 23 of the signal system terminal pins 22 are soldered to the pads 32 of the power module 5 by so-called reflow soldering.
When the signal system lead frame 7 is mounted on the power module 5 in this way, the conductor module 9 in addition to the power module 5 is fixed to the housing 2, and the power supply terminals 16a and 16b and the power supply terminal pins 17a and 17b are connected. After being electrically connected by welding, the control module 6 is inserted into the housing 2 so that the control module side connection portion 24 of each signal system terminal pin 22 is inserted into each signal system terminal pin through hole 13a of the control module 6. Fix it. Then, the control module side connection portion 24 of each signal system terminal pin 22 is solder-connected to each signal system terminal pin through hole 13a by so-called flow soldering. As a result, the power module 5 and the control module 6 are electrically connected via the signal system lead frame 7.
Therefore, according to the present embodiment, the signal system terminal pin through-holes 13a of the control module 6 and the pads 32 of the power module 5 can be provided in two rows, and the interval between the signal system terminal pins 22 is determined. It is possible to reduce the size of the electronic control device 1 in the direction in which the signal system terminal pins 22 are aligned. Thereby, the mounting property to the vehicle of the electronic control apparatus 1 improves dramatically.
In addition, since the intermediate connection portions 25a of the signal system terminal pins 22 are aligned in a row and each signal system terminal pin 22 can be held by a single signal system terminal pin holder 26, the signal system terminal pin holder 26 is connected to the power module. 5, each signal system terminal pin 22 can be brought into contact with each pad 32 of the power module 5 at the same time, and the workability when mounting the signal system lead frame 7 on the power module 5 is drastically improved. improves.
In addition, since each signal system terminal pin 22 is formed in the same shape, only one type of signal system terminal pin 22 for connecting the power module 5 and the control module 6 is required, resulting in cost reduction. There is also a merit that is advantageous.
Further, for example, when the power module 5 or the control module 6 is bent and deformed due to vibration or temperature change of the electronic control device 1 when the vehicle is running, each signal system terminal pin 22 has a bent portion 25. Each signal system terminal pin 22 itself can absorb the bending deformation with elasticity, and the power module side connection part 23 and the control module side connection part 24 of each signal system terminal pin 22 are provided in two rows, respectively. The stress acting on both the connecting portions 22 and 23 is dispersed. Thereby, compared with the case where the power module side connection part and the control module side connection part of each signal system terminal pin are provided in a line like the invention of patent document 1 mentioned above, each signal system terminal pin 22 of each signal system terminal pin 22 is provided. The stress acting on the soldering portion is small, and the reliability of electrical connection between the power module 5 and the control module 6 by each signal system terminal pin 22 can be improved.
Further, since the power module side connection portion 23 of each signal system terminal pin 22 does not overlap the signal system terminal pin holder 26 in a direction perpendicular to the component mounting surface 5a of the power module 5, the signal system lead After mounting the frame 7 on the power module 5, solder connection between each signal system terminal pin 22 and each pad 32 is performed with an image obtained by imaging the component mounting surface 5 a of the power module 5 from a direction perpendicular to the component mounting surface 5 a. It becomes possible to easily check the quality.
In the first embodiment described above, each of the signal system terminal pins 22 has the same shape, but it goes without saying that a plurality of types of signal system terminal pins having different shapes may be used. Specifically, in each of the terminal pin crowded portions A1 to A4, for example, a signal system terminal pin having the same shape as that of the first embodiment described above and a so-called straight signal system terminal pin may be alternately provided. The intermediate connection portions held by the signal system terminal pin holder among the signal system terminal pins are aligned in a row, and the connection portions of the signal system terminal pins to the power module 5 and the control module 6 are respectively arranged in two rows. Can be aligned.
FIG. 9 is a perspective view showing a state in which the signal system lead frame 7 is mounted on the power module 5 as the second embodiment of the present invention. In FIG. 9, the power lead frame 8 and each switching element 19 are omitted for convenience.
In the second embodiment shown in FIG. 9, the connecting portions 23 and 24 are provided on one side in the direction orthogonal to the alignment direction of the signal system terminal pins 22 over the entire length of the signal system lead frame 7. Signal system terminal pins 22 directed to each other, and signal system terminal pins 22 having both connection parts 23 and 24 directed to the other side in a direction orthogonal to the alignment direction of the signal system terminal pins 22 are provided alternately. The number of signal system terminal pins 22 with both connection parts 23 and 24 facing one side in a direction orthogonal to the alignment direction of the system terminal pins 22 and the other side in the direction orthogonal to the alignment direction of each signal system terminal pin 22 The number of signal system terminal pins 22 facing both connection parts 23 and 24 is set to the same number, and the other parts are the same as those in the first embodiment.
Therefore, according to the second embodiment, it is possible to obtain substantially the same effect as that of the first embodiment described above, for example, due to vibration of the electronic control unit 1 or a temperature change during traveling of the vehicle. When the power module 5 or the control module 6 is bent and deformed, the stress acting on the soldering portion of each signal system terminal pin 22 can be more effectively dispersed, and the electronic control device 1 can be connected to each signal system terminal pin. This is more advantageous in reducing the size in the 22 alignment direction.
Here, between the pads 32 of the power module 5 and between the signal system terminal pin through-holes 13a of the control module 6, it is necessary to secure a certain amount of gap in the manufacturing method as described above. It is known that the minimum gap between adjacent lands is increased in proportion to the thickness of the metal foil constituting the conductor pattern, and a metal foil that is thinner than the power module 5 is used. The spacing between the signal system terminal pin through holes 13a of the control module 6 can be narrower than the spacing between the pads 32 on the power module 5 side. Therefore, for example, as shown in FIGS. 10 and 11 as the third embodiment of the present invention, the control module side connection part 36 of each signal system terminal pin 34 can be formed coaxially with the intermediate connection part 35. is there.
That is, each signal system terminal pin 34 in the third embodiment shown in FIGS. 10 and 11 includes an intermediate connecting portion 35 extending in the overlapping direction of the power module 5 and the control module 6, and the power of the intermediate connecting portion 35. A horizontal portion 37 extending in the horizontal direction from the end portion on the module 5 side to the power module 5 and an intermediate portion extending from the end portion of the horizontal portion 37 opposite to the intermediate connecting portion 35 toward the power module 5 side. A power module side connection portion 38 having a substantially L-shape, which is a first circuit side connection portion bent at a substantially right angle in a direction away from the connection portion 35, and the control module 6 in the intermediate connection portion 35. The end on the side is connected to the signal system terminal pin through hole as the control module side connecting portion 36 which is the second circuit board side connecting portion.
Then, the signal system terminal pin 34 with the power module side connection portion 38 directed to one side in the direction orthogonal to the alignment direction of each signal system terminal pin 34, and the other in the direction orthogonal to the alignment direction of each signal system terminal pin 34 The signal system terminal pins 34 with the power module side connection portions 38 directed to the side are alternately provided over the entire area of the signal system lead frame 7 in the longitudinal direction. Other parts are the same as those of the second embodiment described above.
Therefore, according to the third embodiment, substantially the same effect as that of the second embodiment described above can be obtained, and the shape of each signal system terminal pin 34 is simplified, and each of these signal systems is simplified. There is an advantage that the molding of the terminal pin 34 becomes easy.
In the first to third embodiments described above, the signal system terminal pin holder 26 is fixed to the power module 5 by a so-called snap-fit method, but the structure for fixing the signal system terminal pin holder 26 to the power module 5 is this. For example, as shown in FIG. 12 as a fourth embodiment of the present invention, the signal system terminal pin holder 39 may be fixed to the power module 5 using a screw member. . In FIG. 12, only one of the pair of leg portions 40 of the signal system terminal pin holder 39 is illustrated, but the other leg portion is formed in the same manner.
In the fourth embodiment of the present invention shown in FIG. 12, a plate-like mounting base 41 seated on the component mounting surface 5a of the power module 5 is formed on both the leg portions 40 of the signal system terminal pin holder 39, and its mounting A pilot hole 41a is formed through the base 41, and a tapping screw 42, which is a screw member inserted from the cooling surface 5b side of the power module 5, is screwed into the pilot hole of the mounting base 41. That is, the signal system terminal pin holder 39 is fixed to the power module 5 by screwing the tapping screw 42 into the mounting base 41 while inserting the mounting hole 5d of the power module.
Therefore, according to the fourth embodiment, since the head 42a of the tapping screw 42 is seated on the cooling surface 5b of the power module 5 instead of the mounting base 41, the head of the screw member is attached. The contact area of the mounting base 41 with respect to the component mounting surface 5a of the power module 5 can be reduced as compared with the case where the power module 5 is seated on the base 41, which is advantageous in reducing the size of the power module 5, and There is no need to form a female thread portion on the metal plate 18, which is advantageous in terms of cost.
1. Electronic control unit 5. Power module (first circuit board)
6. Control module (second circuit board)
22. Signal system terminal pin (terminal pin)
23. Power module side connection part (first circuit board side connection part)
24. Control module side connection (second circuit board side connection)
25a ・ Intermediate connecting part
An electronic device in which the first circuit board and the second circuit board are arranged in a superposed manner at a predetermined interval, and the first circuit board and the second circuit board are electrically connected by a plurality of terminal pins. In the control device,
Each terminal pin is
A first circuit board side connecting portion connected to the first circuit board;
A second circuit board side connecting portion connected to the second circuit board;
An intermediate connection portion formed between the first circuit board side connection portion and the second circuit board side connection portion and extending in the overlapping direction of the first and second circuit boards;
And the intermediate connection portions of the terminal pins are arranged so as to be aligned in a line along a predetermined alignment direction between the first circuit board and the second circuit board. ,
At least some of the terminal pins have the alignment direction of the first circuit board side connection portion of the terminal pin with respect to the first circuit board side connection portion of another terminal pin adjacent to the terminal pin. An electronic control device, wherein the electronic control device is bent so as to be offset in a direction orthogonal to the axis.
Each of the terminal pins is bent so that the first circuit board side connecting portion is offset with respect to the intermediate connecting portion in a direction orthogonal to the intermediate connecting portion,
A rotation direction about the intermediate coupling portion such that some of the terminal pins have the first circuit board side connection portion of the terminal pin directed to one side in a direction orthogonal to the alignment direction. While mounted on the first circuit board in the position positioned in
Of the terminal pins, the remaining terminal pins are rotated in the direction of rotation about the intermediate connecting portion so that the first circuit board side connecting portion of the terminal pins faces the other side in a direction orthogonal to the alignment direction. It is mounted on the first circuit board in a positioned posture,
2. The electronic control device according to claim 1, wherein the first circuit board side connecting portions of the terminal pins are arranged in two rows.
3. The electronic control device according to claim 2, wherein each of the terminal pins is formed in the same shape.
Each of the terminal pins is bent so that the second circuit board connecting portion in addition to the first circuit board side connecting portion is offset with respect to the intermediate connecting portion in a direction perpendicular to the intermediate connecting portion. ,
4. The electronic control device according to claim 2, wherein the second circuit board side connecting portions of the terminal pins are also arranged in two rows.
The terminal pin holding member which hold | maintains those terminal pins in a mounting attitude | position, aligning the intermediate connection part of each said terminal pin in a line, It is characterized by the above-mentioned. Electronic control device.
The terminal pin holding member extends in the alignment direction between the first circuit board and the second circuit board, and includes a terminal pin holding part that supports the terminal pins, and a first terminal from both longitudinal ends of the holding part. A pair of legs each extending toward one circuit board side,
The terminal pin holding member is inserted into the first circuit board from a surface opposite to the component mounting surface on which the terminal pins are mounted in the first circuit board, and is screwed into the both leg portions. The electronic control device according to claim 5, wherein the electronic control device is fixed to the first circuit board.
JP2010211979A 2010-09-22 2010-09-22 Electronic control device Pending JP2012070509A (en)
JP2010211979A JP2012070509A (en) 2010-09-22 2010-09-22 Electronic control device
US13/231,359 US8403682B2 (en) 2010-09-22 2011-09-13 Electronic control device
CN 201110274846 CN102411315A (en) 2010-09-22 2011-09-16 Electronic control means
JP2012070509A true JP2012070509A (en) 2012-04-05
ID=45818141
JP2010211979A Pending JP2012070509A (en) 2010-09-22 2010-09-22 Electronic control device
US (1) US8403682B2 (en)
JP (1) JP2012070509A (en)
CN (1) CN102411315A (en)
WO2019073604A1 (en) * 2017-10-13 2019-04-18 三菱電機株式会社 Electric power steering device
CN102910162A (en) 2011-08-04 2013-02-06 日立汽车系统株式会社 Electronic Control Unit
DE102013111073A1 (en) * 2013-10-07 2015-04-09 Hella Kgaa Hueck & Co. Electronic switch
US9831580B2 (en) * 2015-09-15 2017-11-28 Ghsp, Inc. Vehicle-mounted sensorless motor with edge-connected termination
JP2003061225A (en) * 2001-08-09 2003-02-28 Furukawa Electric Co Ltd:The Electrical connection box
JP2006287101A (en) * 2005-04-04 2006-10-19 Toyota Motor Corp Power module and its manufacturing method
JP2010035304A (en) * 2008-07-28 2010-02-12 Keihin Corp Terminal having bus bar
JP2010097759A (en) * 2008-10-15 2010-04-30 Hirose Electric Co Ltd Electrical connector for circuit board, and connector assembly having the same, and mating connector thereof
JPS642375Y2 (en) * 1983-02-09 1989-01-19
TW281818B (en) * 1993-12-14 1996-07-21 Market Kk
US5478248A (en) * 1993-12-17 1995-12-26 Berg Technology, Inc. Connector for high density electronic assemblies
JP2002015805A (en) * 2000-06-28 2002-01-18 Auto Network Gijutsu Kenkyusho:Kk Board-connecting structure and method thereof
JP2010111248A (en) 2008-11-06 2010-05-20 Nsk Ltd Electric power steering device
2010-09-22 JP JP2010211979A patent/JP2012070509A/en active Pending
2011-09-13 US US13/231,359 patent/US8403682B2/en active Active
2011-09-16 CN CN 201110274846 patent/CN102411315A/en not_active Application Discontinuation
CN102411315A (en) 2012-04-11
US20120071010A1 (en) 2012-03-22
US8403682B2 (en) 2013-03-26
JP4353951B2 (en) 2009-10-28 Electric power steering device
JP2005224053A (en) 2005-08-18 Circuit constituent
FR2911041A1 (en) 2008-07-04 Electronic control apparatus
CN101577262B (en) 2012-12-05 The power semiconductor module system
JP2005073373A (en) 2005-03-17 Power conversion apparatus
KR20090049522A (en) 2009-05-18 Electronic control device and method of manufacturing electronic control device
CN101364679B (en) 2012-08-22 Electrical connection assembly
CN104170085B (en) 2017-05-10 Semiconductor device
JP5319979B2 (en) 2013-10-16 Terminal with busbar
US7108521B2 (en) 2006-09-19 Pressfit terminal and connection structure
US8363420B2 (en) 2013-01-29 Electronic control apparatus
DE102006021412B3 (en) 2007-11-15 The power semiconductor module
JP2013004953A (en) 2013-01-07 Electronic control device
EP1898466B1 (en) 2017-08-23 Encased PCB switch assembly with contact device
EP2943999B1 (en) 2017-11-29 Electrical press-fit pin for a semiconductor module
DE102004041173B4 (en) 2007-04-12 Soldering between a strip of bus bar and a printed substrate
US8659194B2 (en) 2014-02-25 Motor drive apparatus
CN101996968A (en) 2011-03-30 Power semiconductor module with circuit holder and load connection element and method for manufacturing same
JP2012048946A (en) 2012-03-08 Connector
2012-02-17 A621 Written request for application examination