JP2018020642A - On-vehicle connector, connector box, and vehicle network system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-vehicle connector which can build a vehicle network system while minimizing costs, a connector box which can easily build the vehicle network using the on-vehicle connector, and the vehicle network system.SOLUTION: An on-vehicle connector is provided for each of various vehicle electric devices mounted on a vehicle, communicates with a master electronic control unit, and has a driving circuit which drives the vehicle electric device. The on-vehicle connector includes a circuit board on which components forming the driving circuit are mounted. In the circuit board, one surface is used as a common mounting surface 45 on which a common component 50 may be mounted and the other surface is used as an individual mounting surface 46 on which individual components 51, 52, 53 may be mounted.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an in-vehicle connector, a connector box, and a vehicle network system.

  In recent years, a vehicle network system in which a slave communicates with a master ECU via a communication line to drive each vehicle electrical device as a communication system that drives a plurality of vehicle electrical devices mounted on a vehicle (for example, And Patent Documents 1 to 5).

JP 2011-151622 A JP2015-109608A JP 2005-229561 A JP 2014-108695 A JP 2015-33952 A

  By the way, since each vehicle electrical equipment has various functions, the slave which drives these vehicle electrical equipment needs to be provided with a different drive circuit for every function. Therefore, in order to construct a vehicle network system, it is necessary to use individual slaves corresponding to each vehicle electrical equipment, which increases costs.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to easily construct a vehicle network using an in-vehicle connector and an in-vehicle connector capable of constructing a vehicle network system while suppressing cost as much as possible. It is an object of the present invention to provide a connector box and a vehicle network system.

In order to achieve the above-described object, the in-vehicle connector, the connector box, and the vehicle network system according to the present invention are characterized by the following (1) to (4).
(1) An in-vehicle connector having a drive circuit that is provided for each type of vehicle electrical equipment mounted on a vehicle and that communicates with a master electronic control unit to drive the vehicle electrical equipment,
A circuit board on which components constituting the drive circuit are mounted;
One of the surfaces of the circuit board is a common mounting surface on which a common component can be mounted, and the other surface is an individual mounting surface on which an individual component can be mounted.
(2) The circuit board includes a component mounting portion having a plurality of pads to which component legs are connected,
The vehicle-mounted connector according to (1), wherein at least one of the pads is a determination pad having a pair of divided pads that are electrically connected by a leg of the component to be connected.
(3) The vehicle-mounted connector according to (1) or (2) has a plurality of insertion ports into which the vehicle-mounted connector can be inserted and removed, and the vehicle-mounted connector is inserted into the insertion port, whereby the drive circuit of the vehicle-mounted connector The connector box, wherein the vehicle electrical equipment can be driven.
(4) The vehicle network system comprising the connector box according to (3), wherein the in-vehicle connector inserted into the insertion port communicates with the master electronic control unit to drive the vehicle electrical equipment. .

In the in-vehicle connector configured as described in (1) above, common components such as a power source, communication, and a microcomputer are mounted on the common mounting surface of the circuit board among components for driving the vehicle electrical equipment, and individual components such as driver devices are mounted. Can be easily adapted to each vehicle electric wire device while sharing a part of the circuit board by mounting on the individual mounting surface, and cost reduction can be achieved by sharing a part of the circuit board. it can.
In the in-vehicle connector having the configuration (2), whether the leg of the component is connected to the determination pad is detected by detecting the conduction state between the divided pads constituting the determination pad. Whether or not a component is mounted in the component mounting portion or the type of mounted component can be determined. And based on this discrimination | determination result, the setting of a drive circuit can be set according to a vehicle electrical equipment. Thereby, the component mounting part in a circuit board can be made common, and also cost reduction can be aimed at.
In the connector box having the above configuration (3), the functions can be easily increased by adding the vehicle electrical equipment simply by inserting the in-vehicle connector into the insertion port. Thereby, for example, as compared with a structure in which the in-vehicle connector is connected to the wire harness each time a vehicle electrical device is added, it is possible to eliminate the need for securing the mounting space for the in-vehicle connector, examining the mounting position, and mounting work. Moreover, compared with the case where components and wire harnesses for which additional functions are assumed are mounted, it is possible to reduce costs by eliminating the need for discarding components and wire harnesses.
In the vehicle network system having the configuration (4), it is possible to flexibly cope with function addition while suppressing cost.

  According to the present invention, it is possible to provide an in-vehicle connector capable of constructing a vehicle network system while minimizing cost, a connector box capable of easily constructing a vehicle network using the in-vehicle connector, and a vehicle network system.

  The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

FIG. 1 is a schematic configuration diagram showing a vehicle network system according to the present embodiment. FIG. 2 is a perspective view of the in-vehicle connector according to the present embodiment. FIG. 3 is a schematic configuration diagram of the in-vehicle connector according to the present embodiment. FIG. 4 is a diagram illustrating a circuit board constituting the in-vehicle connector, and FIGS. 4A to 4C are configuration diagrams of the circuit board, respectively. 5A and 5B are diagrams for explaining a component mounting portion on the circuit board, in which FIG. 5A is a schematic plan view of a state where no component is mounted, and FIG. 5B is a schematic view of a state where the component is mounted. It is a top view. FIG. 6 is a schematic circuit diagram illustrating a component determination function in the determination pad. FIG. 7 is a perspective view of the connector box according to the present embodiment. FIG. 8 is a perspective view in which a part of the connector box is cut off. FIG. 9 is a schematic cross-sectional view of the insertion port of the connector box into which the in-vehicle connector is inserted.

Hereinafter, an example of an embodiment according to the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram showing a vehicle network system according to the present embodiment.
As shown in FIG. 1, the vehicle network system 1 mainly includes a wire harness 11, a master ECU 12 (master electronic control unit), various vehicle electrical equipment 13, an in-vehicle connector 14, a connector box 15, and a connection. The member 16 is comprised. The vehicle network system 1 performs multiplexed communication using the in-vehicle connector 14 as a slave by an in-vehicle communication system such as LIN (Local Interconnect Network) and CXPI (Clock Extension Peripheral Interface). In these LIN and CXPI, a plurality of types of unique IDs can be set in order to distinguish the in-vehicle connector 14 as a slave.

  The wire harness 11 is an electric wire bundle based on three types of electric wires: a power line as a trunk line, a communication line, and a GND (ground line). The wire harness 11 is routed in the vehicle and constitutes a multiple communication line of the vehicle network system 1. The wire harness 11 is not limited to the three types of power supply line, communication line, and GND, and may include other electric wires such as signal lines.

  Master ECU12 is an electronic control unit (ECU: Electronic Control Unit) which controls each vehicle electrical equipment 13 as a main control apparatus, for example, is comprised from the microcomputer. The master ECU 12 is connected to one end of a wire harness 11 that is a trunk line. The vehicle electrical equipment 13 is various electrical equipment mounted on the vehicle.

  The in-vehicle connector 14 has a drive circuit that communicates with the master ECU 12 via the communication line of the wire harness 11 and generates a drive signal that drives the vehicle electrical equipment 13.

FIG. 2 is a perspective view of the in-vehicle connector according to the present embodiment. FIG. 3 is a schematic configuration diagram of the in-vehicle connector according to the present embodiment.
As shown in FIGS. 2 and 3, the in-vehicle connector 14 includes a case 30 and a circuit board 40.

  The case 30 is made of, for example, a synthetic resin and has a substantially rectangular shape in plan view. The case 30 includes an insertion part 32 having an opening 31 in a part of the periphery thereof. The case 30 has an accommodation space 33 therein.

  The circuit board 40 is, for example, a hard board made of glass epoxy or the like as a base material, and a conductor pattern is formed on the front and back surfaces. Electronic components are mounted on the front and back surfaces of the circuit board 40. The circuit board 40 is formed in a substantially rectangular shape in plan view having an outer shape smaller than that of the case 30 and is accommodated in the accommodation space 33 of the case 30. The circuit board 40 includes a connector portion 42 having a plurality of contacts 41 at a part of the periphery thereof. The contacts 41 of the connector part 42 are arranged along the edge of the circuit board 40 and are exposed at the opening 31 of the case 30. As the circuit board 40, a flexible printed wiring board may be used. In this case, the connector portion 42 of the circuit board 40 is preferably reinforced with a reinforcing plate or the like.

  The in-vehicle connector 14 includes a plurality of types corresponding to the function of the vehicle electrical equipment 13 serving as a load and a plurality of types of circuit boards 40 corresponding to current ratings. Examples of the circuit board 40 include a half-bridge type, a high-side type, and a low-side type. Current ratings include large current, medium current, and small current. Examples of the vehicle electrical equipment 13 to which the half bridge type corresponds include an outer mirror electric storage motor, a seat belt anchor motor, a sunshade motor, and the like. Examples of the vehicle electrical equipment 13 compatible with the high side type include a fog lamp, a daytime running light, a seat heater, a steering heater, a mirror heater, and a washer nozzle heater. Examples of the vehicle electrical equipment 13 to which the low-side type corresponds include indoor foot lighting, outdoor foot lighting, door lighting, instrument panel lighting, and roof lighting.

FIG. 4 is a diagram illustrating a circuit board constituting the in-vehicle connector, and FIGS. 4A to 4C are configuration diagrams of the circuit board, respectively.
As shown in FIG. 4A, an individual component 51 such as a half-bridge driver IC is mounted on the half-bridge type circuit board 40A. As shown in FIG. 4B, individual components 52 such as intelligent power devices are mounted on the high-side circuit board 40B. As shown in FIG. 4C, an individual component 53 such as a MOSFET is mounted on the low-side type circuit board 40C. Further, as shown in FIGS. 4A to 4C, common components 50 such as a microcomputer, a power supply regulator, and a communication transceiver are mounted on the circuit boards 40A to 40C.

  The circuit boards 40 </ b> A to 40 </ b> C have a common mounting surface 45 and an individual mounting surface 46. A common component 50 is mounted on the common mounting surface 45, and individual components 51, 52, 53 are mounted on the individual mounting surface 46. The circuit boards 40 </ b> A to 40 </ b> C have, for example, a common mounting surface 45 on one surface and a separate mounting surface 46 on the other surface. The common mounting surface 45 has a common conductor pattern on which the common component 50 is mounted, and the individual mounting surface 46 has individual conductor patterns on which the individual components 51, 52, and 53 are mounted.

5A and 5B are diagrams for explaining a component mounting portion on the circuit board, in which FIG. 5A is a schematic plan view of a state where no component is mounted, and FIG. 5B is a schematic view of a state where the component is mounted. It is a top view. FIG. 6 is a schematic circuit diagram illustrating a component determination function in the determination pad.
As shown in FIGS. 5A and 5B, the circuit boards 40 </ b> A to 40 </ b> C have a component mounting portion 60. The component mounting portion 60 is provided with a plurality of pads 61 to which legs L of components P such as semiconductors to be mounted are connected. At least one of these pads 61 is a determination pad 61A having a pair of divided pads 62a and 62b. As shown in FIG. 6, the determination pad 61A has one divided pad 62a connected to the microcomputer MC and the other divided pad 62b connected to the ground (GND).

  In the component mounting portion 60, when the component P is mounted and the leg L of the component P is connected to the determination pad 61A, the divided pads 62a and 62b of the determination pad 61A are conducted through the leg L of the component P. . Further, when the component P is not mounted on the component mounting portion 60, the divided pads 62a and 62b of the determination pad 61A do not conduct. The microcomputer MC determines whether or not the component P is mounted on the component mounting portion 60 by detecting whether or not the divided pads 62a and 62b of the determination pad 61A are conductive. Thereby, the microcomputer MC sets the driver to a driver corresponding to the vehicle electrical equipment 13 according to the determination result of the presence or absence of the component P. The type of component P mounted on the component mounting unit 60 may be determined by detecting the presence or absence of conduction between the divided pads 62a and 62b of the determination pad 61A. Also in this case, the microcomputer MC sets the driver as a driver corresponding to the vehicle electrical equipment 13 according to the determined type of the component P.

FIG. 7 is a perspective view of the connector box according to the present embodiment.
As shown in FIG. 7, the connector box 15 includes a case 72 having a plurality of insertion ports 71 into which the in-vehicle connector 14 can be inserted and removed. The connector box 15 is attached to an arbitrary place of the vehicle. The in-vehicle connector 14 is inserted into the insertion port 71 of the case 72 with the insertion part 32 facing.

FIG. 8 is a perspective view in which a part of the connector box is cut off. FIG. 9 is a schematic cross-sectional view of the insertion port of the connector box into which the in-vehicle connector is inserted.
As shown in FIGS. 8 and 9, a plurality of contact pieces 75 are arranged in a row on the back side of the insertion port 71 of the connector box 15. These contact pieces 75 are provided on a wiring board 77 accommodated in the case 72. When the in-vehicle connector 14 is inserted into the insertion port 71, the contact piece 75 is pressed by each contact 41 of the connector portion 42 provided on the circuit board 40 of the in-vehicle connector 14. Thereby, the contact piece 75 is urged | biased by each contact 41 of the connector part 42 of the circuit board 40, and is electrically contacted. The number of poles to which the contact point 41 and the contact piece 75 are connected is, for example, about 16 poles at maximum with 1 to 2 poles for power supply, 1 to 2 poles for GND, 1 to 2 poles for communication, and 1 to 10 poles for load driving Yes.

  A connection member 16 is connected to the side of the connector box 15 opposite to the insertion port 71. The connection member 16 is a member such as a wire harness that connects the in-vehicle connector 14 connected to the insertion port 71 and the vehicle electrical equipment 13. The connection member 16 includes a connection line 81, a box-side connector 82, and a device-side connector 83 (see FIG. 1). The box-side connector 82 is a connector connected to the connector box 15, and is provided at one end of the connection line 81. The device-side connector 83 is a connector connected to the vehicle electrical device 13 and is provided at the other end of the connection line 81. The connection member 16 electrically connects the wiring board 77 of the connector box 15 and the vehicle electrical equipment 13 by connecting the box side connector 82 to the connector box 15 and connecting the equipment side connector 83 to the vehicle electrical equipment 13. Connecting.

  In the connector box 15, the in-vehicle connector 14 is connected to the power line, the communication line, the GND, and the like of the wire harness 11 by inserting the in-vehicle connector 14 into the insertion port 71, and the in-vehicle connector 14 and the vehicle electrical equipment 13 Is connected. Thereby, a network is constructed and the vehicle electrical equipment 13 can be driven by the drive circuit of the in-vehicle connector 14. That is, the connection between the wire harness 11 of the in-vehicle connector 14 and the vehicle electrical equipment 13 is simply completed simply by inserting the in-vehicle connector 14 into the arbitrary insertion port 71 of the connector box 15.

  The connector box 15 and the in-vehicle connector 14 may be connected by a connector method in which connectors provided in the in-vehicle connector 14 and the insertion port 71 of the connector box 15 are joined to each other. A pressure contact system in which the pressure contact blade of the vehicle mount connector 14 is pressed and connected to the electric wire on the connector box 15 side by inserting the vehicle mount connector 14 into the insertion port 71 may be used.

  In the vehicle network system 1, when the in-vehicle connector 14 is inserted into the insertion port 71 of the connector box 15, the master ECU 12 gives the ID given when the in-vehicle connector 14 is connected to the connector box 15 or the in-vehicle connector in advance. Communication is possible when the ID individually assigned to 14 is recognized, and an error is notified when the ID of the in-vehicle connector 14 cannot be recognized.

  As described above, according to the in-vehicle connector 14 according to the present embodiment, the circuit board 40 has a surface which is one surface as the common mounting surface 45 on which the common component 50 can be mounted, and the other surface. A certain back surface is an individual mounting surface 46 on which the individual components 51, 52, 53 can be mounted. Therefore, among the components for driving the vehicle electrical equipment 13, a common component 50 such as a power supply, communication, or microcomputer is mounted on the common mounting surface 45 of the circuit board 40, and individual components 51, 52, 53 such as a driver device are mounted. Is mounted on the individual mounting surface 46, so that it is possible to easily cope with each vehicle electrical equipment 13 while sharing a part of the circuit board 40. Also, by sharing a part of the circuit board 40, the cost can be reduced. Can be achieved.

  Moreover, whether or not the leg L of the component P is connected to the determination pad 61A is detected by detecting the conduction state between the divided pads 62a and 62b constituting the determination pad 61A, and the component mounting is performed based on the detection result. Whether or not the component P is mounted in the unit 60 or the type of the mounted component P can be determined. And based on this discrimination | determination result, the setting of a drive circuit can be set according to the vehicle electrical equipment 13. FIG. Thereby, the component mounting part 60 in the circuit board 40 can be made common, and also cost reduction can be aimed at.

  Moreover, according to the connector box 15 which concerns on this embodiment, a vehicle electrical equipment 13 can be added and a function can be easily increased only by inserting the vehicle-mounted connector 14 in the insertion port 71. FIG. Thereby, for example, as compared with a structure in which the in-vehicle connector is connected to the wire harness each time the vehicle electrical equipment 13 is added, it is possible to eliminate the need for securing the mounting space for the in-vehicle connector 14, examining the mounting position, and mounting work. Moreover, compared with the case where components and wire harnesses for which additional functions are assumed are mounted, it is possible to reduce costs by eliminating the need for discarding components and wire harnesses.

  And according to the vehicle network system 1 which concerns on this embodiment, it can respond to a function addition flexibly, suppressing cost.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

Here, the features of the above-described embodiments of the in-vehicle connector, the connector box, and the vehicle network system according to the present invention are summarized and listed in the following [1] to [4], respectively.
[1] An in-vehicle connector (14) provided for each of various types of vehicle electrical equipment (13) mounted on the vehicle and having a drive circuit that communicates with the master electronic control unit (12) and drives the vehicle electrical equipment (13). ) And
A circuit board (40) on which the components constituting the drive circuit are mounted;
The circuit board (40) has one surface as a common mounting surface (45) on which a common component (50) can be mounted, and the other surface on which an individual component (51, 52, 53) can be mounted. An in-vehicle connector characterized by being a mounting surface (46).
[2] The circuit board (40) includes a component mounting portion (60) having a plurality of pads (61) to which legs (L) of the component (P) are connected,
At least one of the pads (61) is a determination pad (61A) having a pair of divided pads (62a, 62b) that are conducted by the legs (L) of the parts (P) to be connected. The in-vehicle connector according to [1], which is characterized.
[3] The vehicle-mounted connector (14) according to [1] or [2] has a plurality of insertion ports (71) into which the vehicle-mounted connector (14) can be inserted and removed, and the vehicle-mounted connector (14) is inserted into the insertion port (71). Thus, the vehicle electrical equipment (13) can be driven by the drive circuit of the in-vehicle connector (14).
[4] The connector box (15) according to [3] is provided, and the in-vehicle connector (14) inserted into the insertion port (71) communicates with the master electronic control unit (12) to communicate the vehicle electrical equipment. A vehicle network system, characterized in that the device (13) is driven.

1: Vehicle network system 12: Master ECU (master electronic control unit)
13: Vehicle electrical equipment 14: In-vehicle connector 15: Connector box 40, 40A, 40B, 40C: Circuit board 45: Common mounting surface 46: Individual mounting surface 50: Common component 51, 52, 53: Individual component 60: Component mounting portion 61: Pad 61A: Judgment pads 62a, 62b: Dividing pad 71: Insert port L: Leg P: Parts

Claims (4)

An in-vehicle connector having a drive circuit that is provided for each type of vehicle electrical equipment mounted on a vehicle and that drives the vehicle electrical equipment by communicating with a master electronic control unit,
A circuit board on which components constituting the drive circuit are mounted;
One of the surfaces of the circuit board is a common mounting surface on which a common component can be mounted, and the other surface is an individual mounting surface on which an individual component can be mounted. The circuit board includes a component mounting portion having a plurality of pads to which component legs are connected,
The vehicle-mounted connector according to claim 1, wherein at least one of the pads is a determination pad having a pair of divided pads that are electrically connected by a leg of the component to be connected. The in-vehicle connector according to claim 1 or 2 has a plurality of insertion ports into which the in-vehicle connector can be inserted and removed, and the in-vehicle connector is inserted into the insertion port, whereby the vehicle electrical equipment by the drive circuit of the in-vehicle connector A connector box that is capable of driving equipment. A vehicle network system comprising the connector box according to claim 3, wherein the in-vehicle connector inserted into the insertion port communicates with the master electronic control unit to drive the vehicle electrical equipment.

Images