JP2015050782A - Electrical connection component and electronic control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that using wire bonding is difficult in a substrate area where electronic components are mounted densely around a wire fixing position because a space for bonding around the wire fixing position is necessary to use wire bonding.SOLUTION: An electrical connection component 1 interposed between current-carrying members to be connected with each other for electrically connecting the current-carrying members comprises a pedestal part 2 composed of an insulation member, and a conductive member 3 fixed on the pedestal part 2 and electrically connecting the current-carrying members. The conductive member 3 comprises a primary part 4 of the conductive member arranged on the side of the upper surface of the pedestal part 2, and leg parts 5 and 6 used as a connection terminal which extend from both ends of the primary part 4 of the conductive member, penetrate the pedestal part 2, protrude to the side of the lower surface of the pedestal part 2, and come in contact with the current-carrying member. The primary part 4 of the conductive member comprises a deformation part 7 used as a hold which protrudes in a direction away from the upper surface of the pedestal part 2.

Description

  The present invention relates to an electrical connection component capable of connecting current-carrying members even when electronic components are mounted around the electronic control device, and an electronic control device including the electrical connection component.

  Wire bonding is known as a method of electrically connecting current-carrying members. In wire bonding, an apparatus called a feeder that welds wires to a substrate is used to fix the wires to the substrate. Patent Document 1 describes wire bonding between a plurality of copper layer portions of a ceramic substrate.

JP-A-5-2595997

  In order to adopt wire bonding, a space for bonding is required around the fixed position of the wire. For this reason, wire bonding should be adopted in the board area where electronic parts are densely mounted around. Is not easy.

In particular, when tall electronic components such as a capacitor, a coil, and a relay are mounted around, it is difficult to adopt a wire bonding because a bonding arm or the like of the feeder device is difficult to enter.
Further, the resonance point of the wire is low, and the fixed point to the substrate is likely to be deteriorated by vibration, and there is a possibility that the wire may be shaken by the vibration and the wires come into contact with each other.

  An object of the present invention is to provide an electrical connection component capable of connecting current-carrying members even when an electronic component is mounted around the periphery, and an electronic control device including the electrical connection component.

The invention of claim 1 is an electrical connection part that is interposed between current-carrying members to be connected to each other and electrically connects these current-carrying members,
A pedestal portion made of an insulating member, and a conductive member fixed to the pedestal portion and electrically connecting the current-carrying members,
The conductive member includes a conductive member main portion disposed on the upper surface side of the pedestal portion, and continuous with both ends of the conductive member main portion, penetrates the pedestal portion, and protrudes to the lower surface side of the pedestal portion so that the energization is performed. A pair of connecting terminal legs that contact the member,
The conductive member main part includes a deforming part for gripping protruding in a direction away from the upper surface of the pedestal part.

The invention of claim 2 is the electrical connection part of claim 1,
At least two or more of the conductive members are opposed to each other and arranged on the pedestal portion, and the deformed portions of the respective conductive members are arranged with their positions shifted.

The invention of claim 3 is an electronic control device comprising a circuit board in which a plurality of bus bars to be connected to each other are resin-molded, and wherein the bus bars are connected to each other by electrical connection parts,
The electrical connection component includes a pedestal portion made of an insulating member, and a conductive member fixed to the pedestal portion,
The conductive member includes a conductive member main portion disposed on the upper surface side of the pedestal portion, and continuous with both ends of the conductive member main portion, penetrates the pedestal portion, and protrudes to the lower surface side of the pedestal portion so that the energization is performed. A pair of connecting terminal legs that contact the member,
The conductive member main part includes a deforming part for gripping protruding in a direction away from the upper surface of the pedestal part,
The electrical connection component was mounted on the circuit board using the deformed portion, and the bus bars were connected to each other by bringing the connection terminal legs into contact with the bus bars.

  In the first aspect of the present invention, since the gripping deformation portion protruding in the direction away from the top surface of the pedestal portion is formed in the conductive member main portion disposed on the top surface side of the pedestal portion, the deformation portion is gripped, The leg portion for the connection terminal on the lower surface of the pedestal portion can be connected to the energizing member.

  In the invention of claim 2, since the position of the deformed portion of the conductive member disposed to face the pedestal portion is shifted, the deformed portions of the conductive member are not deformed even when the distal end side of the deformed portion is bent. Suppresses contact.

  According to the third aspect of the present invention, since the grip deforming portion protruding in the direction away from the top surface of the pedestal portion is formed in the main portion of the conductive member positioned on the top surface side of the pedestal portion, The bus bars can be electrically connected to each other by attaching the members to the circuit board and bringing the pair of connecting terminal legs into contact with the bus bars to be connected to each other. Since the conductive member can be attached to the circuit board by grasping the deformed portion, the conductive member can be easily assembled even in a narrow place where a tall electronic component such as a capacitor, coil, or relay is mounted around. be able to.

Embodiment of an electrical-connection component is shown, (A) is a perspective view, (B) is a front view, (C) is a top view. The perspective view of the brake control apparatus as an electronic control apparatus using an electrical connection component. The disassembled perspective view of the motor control unit of a brake control apparatus. The enlarged view of a power module. The perspective view which looked at the power module from the component mounting surface side. The top view which looked at the power module from the component mounting surface side. The perspective view which shows the other example of a power module. The perspective view of a common mode coil. The front view which shows other embodiment of an electrical-connection component. FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an electrical connection component 1, (A) is a perspective view, (B) is a front view, and (C) is a plan view.

  The electrical connection component 1 includes a pedestal portion 2 made of an insulating member and a current-carrying member that is fixed to the pedestal portion 2 and is to be connected to each other, for example, a conductive member 3 that electrically connects bus bars to each other.

  The conductive member 3 includes a conductive member main portion 4 disposed on the upper surface 2 a side of the pedestal portion 2, and is continuous with both ends of the conductive member main portion 4 and penetrates the pedestal portion 2 to the lower surface side of the pedestal portion 2. A pair of connecting terminal legs 5 and 6 that protrude and contact each of the current-carrying members to be connected to each other are provided.

  The conductive member main portion 4 includes a gripping (pick) deformation portion (hereinafter referred to as a plastic deformation portion) 7 protruding in a direction away from the upper surface 2 a of the pedestal portion 2. The plastic deformation portion 7 is formed to have a width that allows the electrical connection component 1 to be easily gripped with a fingertip.

  In the pedestal portion 2, two conductive members 3 and 3 are arranged in parallel at symmetrical positions across the center line CL of the pedestal portion 2.

  The two conductive members 3 and 3 are formed in the same shape by a copper wire or the like, and are attached to the pedestal portion 2 symmetrically.

  For example, as shown in FIG. 5, the electrical connection component 1 is used by being attached to the component mounting surface of the plate-like base portion 53 of the power module 24 of the electronic control device, while holding the plastic deformation portion 7.

  2 is a perspective view of a brake control device as an example of an electronic control device using the electrical connection component 1, FIG. 3 is an exploded perspective view of a motor control device of the brake control device, FIG. 4 is an enlarged view of a power module, and FIG. FIG. 6 is a perspective view of the power module viewed from the component mounting surface side, and FIG. 6 is a plan view.

First, a schematic configuration of the brake control device 11 will be described with reference to FIGS.
The brake control device 11 includes a hydraulic control mechanism 12 that generates hydraulic pressure of hydraulic oil for performing brake control based on an operation amount of a brake pedal, a motor control unit 13 that controls an electric motor (not shown), and hydraulic oil. The reservoir 14 is stored.

  In the hydraulic control mechanism 12, the housing 15 is fixed to a partition wall that partitions an engine room and a vehicle compartment (not shown) by bolts 16. The electric motor is housed in the housing 15 of the hydraulic control mechanism 12.

  The hydraulic control mechanism 12 has a master cylinder 17 and a reservoir 14 on one side in the axial direction. The reservoir 14 is provided above the master cylinder 17 along the master cylinder 17.

  The housing 15 is fixed to a partition wall that partitions the engine room and the vehicle compartment by bolts 16, and the reservoir 14, the motor control unit 13, and the master cylinder 17 are fixed to the housing 15, whereby the master cylinder 17, the housing 15, and the reservoir 14 are fixed. The motor control unit 13 is fixed to the vehicle body.

  As shown in an exploded view in FIG. 3, the motor control unit 13 is configured by housing a power module 24 and a control module 25 in a housing 23 including a case portion 21 and a lid portion 22.

  The power module 24 is disposed in the case portion 21. The control module 25 is disposed above the power module 24 in a state of being stacked with the power module 24 at a predetermined interval.

  The lid portion 22 is formed by pressing a metal plate into a dish shape, and includes a control module housing portion 26 that houses the control module 25, a flange portion 27 formed on the outer peripheral edge of the control module housing portion 26, And a protruding edge portion 28 formed by bending the flange portion 27 downward (case portion 21 side). The lid portion 22 is attached to the case portion 21 with a screw 29.

  The case portion 21 is formed in a bottomed rectangular tube shape by a quadrangular bottom wall 31 and a first wall portion 32 to a fourth wall portion 35 erected on the four circumferences of the bottom wall 31. The case part 21 is formed by aluminum die casting.

  The first wall portion 32 is formed with an opening 36 through which the external connection connector 54 of the power module 24 protrudes outside the case portion 21.

  The opening 36 is formed in accordance with the shape of the flange portion 54 a formed at the base portion of the external connection connector 54. The flange portion 54a is bonded and fixed to the periphery of the opening portion 36 through a sealing material (not shown).

  At the four corners of the bottom wall 31 of the case portion 21 are formed substantially cylindrical power module support portions 37 extending toward the opening side. A screw hole 38 is formed at the top of each power module support portion 37, and a power module mounting screw 39 is screwed into the screw hole 38.

  Further, a block-like projecting portion 40 projecting in a substantially rectangular shape is formed as a heat receiving portion for absorbing heat generated from the power module 24 at a position corresponding to the switching element mounting region of the power module 24 in the bottom wall 31. It functions as a heat sink with a large heat capacity.

  The block-shaped projecting portion 40 is located at a substantially central portion of the bottom wall 31 of the case portion 21 and is separated from the first wall portion 32, the second wall portion 33, and the third wall portion 34 with a predetermined interval. In this state, the fourth wall portion 35 is formed in contact with the fourth wall portion 35. Cooling fins 41 are provided on the outer surface of the fourth wall portion 35.

  A plurality of screw holes 42 are formed on the top surface of the block-shaped protrusion 40, and a power module mounting screw 43 is screwed into the screw holes 42. The motor control unit 13 is attached to the housing 15 by a unit attachment screw 44.

  Next, the power module 24 will be described. 4 is an enlarged view of the power module 24 shown in FIG. 3, FIG. 5 is a perspective view of the power module 24 shown in FIG. 4 turned over and viewed from the component mounting surface side, and FIG. 6 is a plan view of FIG.

  The power module 24 is molded using a synthetic resin material, and as shown in FIG. 4, a plurality of metal bus bars 51, 52 (hereinafter, the bus bar 51 is the first bus bar, and the bus bar 52 is the second. An external connection connector 54 is provided on one end side of a plate-like base portion 53 having a bus bar) inserted on the surface thereof.

  As shown in FIGS. 5 and 6, the plate-like base portion 43 includes a stator connection portion 55 and a sensor connection portion 56 on the component mounting surface side.

  The external connection connector 54 is a power supply connector and faces the outside through the opening 36 of the case portion 21.

  The stator connection portion 55 includes three power supply terminals 55a to 55c arranged along the axial direction (X direction) of the external connection connector 54, and a cover portion that covers the root portions of the three power supply terminals 55a to 55c. 55d.

  Similarly to the stator connection portion 55, the sensor connection portion 56 is configured by arranging the rotational position sensor connector 56 a and the temperature sensor connector 56 b side by side along the axial direction (X direction) of the external connection connector 54.

  In addition, a switching element mounting region surrounded by a ridge 57 having a rectangular shape in plan view is formed between the stator connection portion 55 and the sensor connection portion 56, and six switching elements 58 are mounted in the region. Has been. The six switching elements 58 constitute an inverter circuit that converts DC power supplied via the external connector 54 into three-phase AC power. The three-phase AC power that is the output of this inverter circuit is supplied to the electric motor via the stator connecting portion 55, and the electric motor is driven to rotate.

  Each switching element 58 has a terminal 59 extending from one side of a rectangular package arranged along the component mounting surface of the plate-like base 53. The terminal 59 is bent in an L shape, and its tip 59a protrudes from the surface opposite to the component mounting surface of the plate-like base 53 as shown in FIG.

  In addition, a pair of columnar members protruding upright in a direction perpendicular to the component mounting surface at the corner portion on the opposite side of the external connector 54 on the component mounting surface of the plate-like base 53 and on the diagonal side. The first electrolytic capacitor 61 and a pair of second electrolytic capacitors 62 having a shorter length than the first electrolytic capacitor 61 standing and projecting in a direction perpendicular to the component mounting surface in the same manner as the first electrolytic capacitor 61. A plurality of ceramic capacitors 63, a plurality of shunt resistors 64 for detecting current, a pair of relays 65 for circuit protection, and a normal mode coil 66 are mounted. The first electrolytic capacitor 61, the second electrolytic capacitor 62, and the normal mode coil 66 function as noise filter components for removing noise.

  The electrical connecting component 1 is assembled to the plate-like base 53 in a narrow space surrounded by the stator connecting portion 55, the first electrolytic capacitor 61, the second electrolytic capacitor 62, the ceramic capacitor 63, the pair of relays 65, and the like. . As shown in FIG. 4, the electrical connection component 1 assembled to the plate-like base 53 is connected to one of the pair of connection terminal legs 5 and 6 on the surface opposite to the component mounting surface. The distal end 5 a of the first leg 5 is connected to the terminal 67 of the first bus bar 51, and the distal end 6 a of the other connecting terminal leg 6 is connected to the terminal 68 of the second bus bar 52.

  When assembling the electrical connection component 1, the deformation portion 7 is held, and the electrical connection component 1 is connected to the stator connection portion 55, the first electrolytic capacitor 61, the second electrolytic capacitor 62, the ceramic capacitor 63, and a pair of relays 65. Insert into a narrow space surrounded by etc. When inserting the electrical connection component 1, the tips 5 a and 6 a of the connection terminal legs 5 and 6 are introduced into terminal insertion holes (not shown) formed in the plate-like base 53.

  When the electrical connection component 1 is assembled to the plate-like base 53, the tips 5a and 6a of the connection terminal legs 5 and 6 protrude in the vicinity of the terminals 67 and 68 as shown in FIG. The first bus bar 51 and the second bus bar 52 connect the conductive member main part 3 of the electrical connection component 1 by connecting the tips 5a, 6a of the leg parts 5, 6 and the terminal contacts 67, 68 by welding or the like. Thus, they are electrically connected to each other.

  FIG. 7 uses the common mode coil 71 shown in FIG. 8 for the purpose of improving the noise removal effect. The common mode coil 71 includes a pedestal 72, a conductive member 73, and a coil body 73. However, noise can be removed without using the common mode coil 71. Therefore, the cost can be reduced by removing the common mode coil 71 and assembling the electrical connection component 1 of the present invention instead.

  9 and 10 show another embodiment of the electrical connection component 1 of the present invention. In this embodiment, the conductive member 3, particularly the conductive member main portion 4, is bonded to the pedestal portion 2 with the adhesive 8, and the conductive member 3 and the pedestal portion 2 are integrated.

  By being integrated, the conductive member 3 is stably attached to the pedestal portion 2, and the deformable portion 7 is easily gripped. Further, since the conductive member 3 is fixed to the pedestal portion 2, even when the pedestal portion 2 vibrates, the occurrence of rubbing between the pedestal portion 2 and the conductive member 3 is prevented, and the conductive member 3 is worn due to rubbing. Can be prevented.

  In the above embodiment, the brake control device as an example of the electronic control device has been described as an example. However, the electronic control device is not limited to the brake control device, and may be any device that performs electronic control. Moreover, although the case where the two electrically-conductive members 3 were provided in the base part 2 as the electrical connection component 1 was shown in the Example, the electrically-conductive member 3 may be one. When the number of the conductive members 3 is one, the deformable portion 7 may be formed at the central portion of the conductive member main portion 4. Further, the shape of the deformable portion 7 is not limited as long as it is easy to grip and is not easily bent.

DESCRIPTION OF SYMBOLS 1 ... Electrical connection component 2 ... Base part 3 ... Conductive member 4 ... Conductive member main part 5, 6 ... Leg for connection terminal 7 ... Deformation part for holding | grip 11 ... Brake control apparatus (electronic control apparatus)
51,52 ... Bus bar

Claims (3)

An electrical connection component that is interposed between current-carrying members to be connected to each other and electrically connects these current-carrying members,
A pedestal portion made of an insulating member, and a conductive member fixed to the pedestal portion,
The conductive member includes a conductive member main portion disposed on an upper surface side of the pedestal portion, and continuous with both end portions of the conductive member main portion, penetrates the pedestal portion, and protrudes to a lower surface side of the pedestal portion, so that the energizing member A pair of connecting terminal legs that come into contact with
The electrically conductive member main part is an electrical connection component including a deforming part for gripping protruding in a direction away from the upper surface of the pedestal part. The electrical connection component of claim 1.
At least two or more of the conductive members are arranged on the pedestal portion so as to face each other, and the deforming portions of the respective conductive members are electrical connection parts arranged so as to be displaced from each other. In an electronic control device comprising a circuit board in which a plurality of bus bars connected to each other are resin-molded, and the bus bars connected to each other by electrical connection components,
The electrical connection component includes a pedestal portion made of an insulating member, and a conductive member fixed to the pedestal portion,
The conductive member includes a conductive member main portion disposed on the upper surface side of the pedestal portion, and continuous with both ends of the conductive member main portion, penetrates the pedestal portion, and protrudes to the lower surface side of the pedestal portion so that the energization is performed. A pair of connecting terminal legs that contact the member,
The conductive member main part includes a deforming part for gripping protruding in a direction away from the upper surface of the pedestal part,
An electronic control device, wherein the deformable portion is used to mount the electrical connection component on the circuit board, and the bus bars are connected to each other by bringing the connection terminal legs into contact with the bus bars to be connected to each other.

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