JP2000289534A - Vehicular electronic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the degree of layout freedom, assembleeasiness and heat radiability. SOLUTION: A projection part 41 jutting out downward is made up in a lower end side edge of a third electronic control unit 40, thereby forming a recessed part opened downward for storing a first electronic control unit 20 into a lower part of the third electronic control unit 40 by the projection part 41. The third electronic control unit 40 and an operation panel 10 both are electrically connected by two connectors 13 and 43. In addition, a second electronic control unit 30 is set up on top of the third electronic control unit 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device for a vehicle, for example, to an electronic device for a vehicle in which a cassette tape, a CD, an MD and the like can be intensively operated by an operation panel.

[0002]

2. Description of the Related Art Japanese Patent Laying-Open No. 9-289689 discloses an on-vehicle electronic control device which is divided into an electronic control unit and a switch unit, and a switch unit is formed on an instrument panel so as to face a passenger compartment. In which the electronic control unit is disposed behind the switch unit (see Japanese Patent Application Laid-Open Nos. 8-295181 and 10-27).
No. 2993).

[0003] Also, JP-A-4-43724 discloses that
A description is given of a control unit provided with an operation unit and a display unit capable of operating a plurality of different types of wireless communication devices, a common unit attached thereto, and a wireless communication device attached to the common unit for integration. Further, according to Japanese Patent Application No. 10-27069 including the present applicant, as shown in FIG. 12, the design panel 10 faces the vehicle interior, and the overall control device 40 is hidden behind the design panel 10 from the vehicle interior. 'And CD, M
In the structure for arranging the D device 20 ', M
Since the medium used by the D device 20 'is small, the MD device 20' can be stored in the concave portion 41 'opened above the general control device 40', and other devices depending on whether or not the MD device 20 'is set as an option. This document describes that the layout size is increased and the overall size is reduced.

[0004]

SUMMARY OF THE INVENTION However, Japanese Patent Application No.
In the structure of −272069, as shown in FIG.
Since the periphery of the device 20 'is surrounded by the general control device 40', heat radiation is deteriorated. Also, the work of assembling and removing the MD device 20 'from the concave portion 41' is troublesome.

[0005] Further, in the MD device, a display portion or an MD insertion port is provided on the vehicle interior side. Therefore, an opening for making the display portion or the MD insertion port face the vehicle interior is provided on the design panel, and the display is provided. In order to make the side of the interior of the vehicle interior or the MD insertion slot as flush as possible with the design panel surface, when assembling the MD unit into the recess 41 ', the periphery of the opening in the design panel and its display portion or the MD insertion slot are required. There is also a problem that they cannot be assembled properly because they interfere with each other.

On the other hand, in the structure disclosed in Japanese Patent Application Laid-Open No. 9-289689, a plurality of electronic control units are separately arranged with respect to a control unit for centrally controlling the electronic control units. However, there is a problem that it is complicated and it takes time to assemble. When assembling with the optional functions of the electronic control unit attached (for example, CD
For example, when the unit is changed to a CD changer unit), the size of the electronic control unit may be increased, and there is a concern that the electronic control unit may not fit in the base chassis. By the way, it is conceivable to increase the internal space of the base chassis in advance, but in such a case, downsizing of the vehicular electronic device, which is particularly required in recent years, cannot be achieved.

In the structure disclosed in Japanese Patent Application Laid-Open No. Hei 8-295181, although a centralized control unit for controlling each control unit and each control unit are arranged in parallel, there is no disclosure of a method of connecting them. In addition, since the central control unit is arranged at the extreme end of each control unit, the wiring work is also complicated when connecting each control unit and the central control unit, and it also takes time to assemble. There is a problem to say.

Further, in the structure of Japanese Patent Application Laid-Open No. 10-272993, although the centralized control unit for controlling each control unit and each control unit are arranged in parallel, the centralized control unit is the first of each control unit. Since they are arranged at the ends, the wiring work becomes complicated when connecting between the control units and the centralized control unit, and there is a problem that it takes much time to assemble.

In the structure disclosed in Japanese Patent Application Laid-Open No. 4-43724, although the control units are arranged in parallel,
Since the centralized control unit that controls each control unit is disposed inside the cabin of each control unit, there is a problem that the space extending in the vehicle cabin is increased. If each control unit is provided with a control function of reading out a storage medium and the storage medium can be inserted from the vehicle interior, the central control unit must be provided with a communication hole for the storage medium, and the structure is inevitable. Becomes complicated. Further, if a control unit having a control function for reading the storage medium is set as an option, the space for the communication hole of the centralized control unit becomes a dead space when the unit is detached without an option. The required downsizing of vehicle electronic equipment cannot be achieved.

Further, Japanese Patent Application Laid-Open Nos.
As described in JP-289689, a centralized control unit is arranged on the back side of the operation panel, and further, the first and second electronic control units are arranged behind the centralized control unit. There is a problem that the length in the depth direction is increased. Further, Japanese Unexamined Patent Publication No.
As described in JP-A-295181 and JP-A-10-272993, when the centralized control unit is disposed at the extreme end, when the thickness of the first electronic control unit and the second electronic control unit is large, the centralized control unit is not used. It is not preferable to change the arrangement of the
-Although the second electronic control unit protrudes greatly, it is difficult to secure a cohesive space in the instrument panel for when the first and second electronic control units are large, and in the middle If the thickness of the electronic control unit to be arranged is increased, the mounting position itself of the electronic control unit located on the side opposite to the side where the centralized control unit is arranged is shifted, so that the electronic control unit and the side where the centralized control unit is arranged are shifted. However, there is a problem that mounting of the electronic control unit located on the opposite side becomes difficult.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a vehicular electronic device capable of improving layout flexibility, assembling property, and heat dissipation.

[0012]

In order to solve the above-mentioned problems and achieve the object, a vehicle electronic device according to the present invention has the following arrangement. That is, an operation in which a base chassis detachably fixed to the vehicle body and an operation switch detachably fixed to the base chassis and provided with an operation switch for operating a display device and an electronic control unit on one side facing the vehicle compartment. A panel, first and second electronic control units detachably fixed to the base chassis, and disposed on the other side of the operation panel; and a panel detachably fixed to the base chassis, and And a third electronic control unit for inputting an operation signal of the operation signal and selecting and outputting a control signal corresponding to the operation signal to the first and second electronic control units, wherein the third electronic control unit A signal transmitting means for transmitting a signal between the panel and the first and second electronic control units; It is located in.

Further, the vehicle electronic device of the present invention has the following configuration. That is, the first having a predetermined first control function
An electronic control unit is formed separately from the first electronic control unit, and has a predetermined second function different from the first control function.
A second electronic control unit having a control function and the first and second electronic control units are formed separately from each other,
An operation panel having a plurality of operation switches for operating respective control functions related to the first and second electronic control units, and the operation panel formed separately from the first and second electronic control units and the operation panel; Determining a control function of the first and second electronic control units to be activated when a switch is operated, and outputting a control signal to the electronic control unit to activate the control function;
An electronic control unit; and an electrical coupling unit for electrically coupling the first to third electronic control units and the operation panel. The first to third electronic control units are electrically connected to the operation panel. A vehicle electronic device in which each of the third electronic control units is arranged adjacently to the back side of the operation panel and arranged in parallel, wherein the third electronic control unit includes the first electronic control unit and the second electronic control unit. And electrically connected to each of the first and second electronic control units by a connector.

[0014] Preferably, the third electronic control unit has a projection projecting from an end thereof, and the first electronic control unit is stored adjacent to the third electronic control unit by the projection. To form a concave portion.

Preferably, the third electronic control unit is formed with a convex portion projecting downward from an end thereof.
The convex portion forms a concave portion for housing the first electronic control unit below the third electronic control unit.

Preferably, the third electronic control unit and the operation panel are formed separately from each other, and are configured to be detachable by a connector.

Preferably, a first display unit or an insertion slot for inserting a storage medium read by the first electronic control unit is provided on a side surface of the cabin of the first electronic control unit. The portion or the insertion port is disposed adjacent to a side surface of the operation panel, and faces the interior of the vehicle so as to be substantially flush with the operation panel surface.

Preferably, a connector for connecting the third electronic control unit to a vehicle body is provided on the projection.

Preferably, a connector for electrically connecting to the second electronic control unit is provided on an upper surface of the projection of the third electronic control unit.

Preferably, the electronic device for a vehicle is disposed between a driver's seat and a passenger seat in an instrument panel, and the control functions of the first and second electronic control units are respectively inserted from the passenger compartment side. The storage medium inserted into the first electronic control unit includes a function of reading the stored storage medium, and is smaller than the storage medium inserted into the second electronic control unit.

Preferably, the connector is a first connector mounted on one surface of a circuit board built in the third electronic control unit and electrically connected to the first electronic control unit; A second connector mounted on the other surface of the circuit board for electrically connecting to the second electronic control unit.

Preferably, the upper and / or lower ends of the base chassis are open, and the first and second electronic control units are mounted from the upper or lower ends of the base chassis.

Preferably, at least one of the first and second electronic control units includes the first or second electronic control unit.
An insertion opening for inserting a storage medium read by the electronic control unit is provided, and a communication hole for inserting the storage medium is provided in the operation panel corresponding to the insertion opening.

Preferably, the base chassis has a reference mounting portion serving as a reference position for mounting the first and second electronic control units, and the first and second electronic control units are located at positions different from the reference mounting portion. (2) an error-tolerant mounting portion for mounting while allowing a position error of the electronic control unit, wherein at least one of the connectors of the first and second electronic control units is more attached to the reference mounting portion than to the error-tolerant mounting portion. They are located close together.

Preferably, a first connector which engages with a connector of the third electronic control unit is provided on one surface of the first electronic control unit, and on another surface opposite to one surface of the first electronic control unit. A second connector for electrically connecting the fourth electronic control unit is provided.

[0026] Preferably, the first connector and the second connector are provided at substantially the same position on the surfaces facing each other.

Preferably, a heat radiation hole is formed in a housing of the first electronic control unit disposed below the third electronic control unit, and the heat radiation hole is built in the first electronic control unit. It is formed excluding a part corresponding to the control operation unit to be performed.

Preferably, a radiating hole is formed on a side surface of the casing of the first electronic control unit, and a radiating hole of the first electronic control unit is formed on a side surface of the convex portion of the third electronic control unit. A heat radiation hole is formed at a position corresponding to.

Preferably, the apparatus further comprises fixing means for directly fixing and holding the circuit board built in the third electronic control unit and the circuit board built in the first or second electronic control unit.

Preferably, at least one of the first and second electronic control units is supported by the base chassis via an elastic body so as to be slightly displaceable with respect to the third electronic control unit. I have.

Preferably, the elastic body has an allowable error width along a fitting direction of at least one of the connectors of the first and second electronic control units and the connector of the third electronic control unit. It is set to be smaller than the allowable error width in directions other than the combined direction.

Preferably, the apparatus further comprises determination means for determining whether or not the combination is a pre-registered combination between the third electronic control unit and at least one of the first and second electronic control units. The means communicates between the third electronic control unit and at least one of the first and second electronic control units to inhibit execution of a control function of at least one of the first and second electronic control units. .

Preferably, the determination means is provided in the third electronic control unit.

Preferably, the first and second electronic control units each include driving means for driving a storage medium to read predetermined data from the storage medium, and the third electronic control unit is provided with a predetermined control means for reading predetermined data from the storage medium. There is no drive means for driving the storage medium to read data.

[0035]

As described above, according to the first aspect of the present invention, the third electronic control unit has the signal transmission means between the operation panel and the first and second electronic control units. By being disposed between the first and second electronic control units on the side surface, the first and second electronic control units can be disposed vertically so as to sandwich the third electronic control unit, thereby increasing the layout flexibility. Can be

In addition, improvement of heat dissipation, especially improvement of assemblability centering on electric connection between the third electronic control unit and the first and second electronic control units, and further downsizing of the vehicle electronic equipment itself. Can be achieved. Further, even when the size of the first or second electronic control unit is increased, the electronic control unit can be assembled without any problem.

More specifically, as described in JP-A-4-43724 and JP-A-9-289689, a centralized control unit (third electronic control unit) is arranged on the back side of the operation panel, and further behind it. In the configuration in which the first and second electronic control units are arranged, there is a problem that the length in the depth direction increases when viewed as a whole of the vehicle electronic device. Since the length in the depth direction can be minimized, such a problem is solved. In addition, Japanese Patent Application Laid-Open Nos. 8-295181 and 10-2
No. 72993, a centralized control unit (third
Electronic control unit) is located at the extreme end,
When the thicknesses of the first electronic control unit and the second electronic control unit are large, it is not preferable to change the arrangement of the centralized control unit.
Although the electronic control unit will protrude greatly,
-It is difficult to secure a large space in the instrument panel for the case where the second electronic control unit becomes large, and if the thickness of the electronic control unit disposed in the middle becomes large, the central control unit Since the mounting position itself of the electronic control unit located on the side opposite to the side where the central control unit is located is shifted, it is difficult to attach the electronic control unit located on the side opposite to the side where the centralized control unit is located. Although there is a problem, in the configuration according to the first aspect, even if the thickness of the first electronic control unit and the second electronic control unit is increased, the amount of protrusion of each is small (because it protrudes dispersedly on both sides). The degree of freedom of the layout is high, and the arrangement of the first electronic control unit and the second electronic control unit on the third electronic control unit side does not change. Whether an electronic control unit of size, it is possible to share the mounting structure of the electronic control unit, such a problem can be solved.

According to the second aspect of the present invention, the third electronic control unit is disposed between the first electronic control unit and the second electronic control unit, and is connected to each of the first and second electronic control units. The first and second electronic control units can be arranged vertically so as to sandwich the third electronic control unit, thereby increasing the degree of freedom in layout.

Further, the heat dissipation is improved, especially the assemblability of the third electronic control unit and the electrical connection between the first and second electronic control units is improved, and the downsizing of the vehicle electronic equipment itself is further improved. Can be achieved. Further, even when the size of the first or second electronic control unit is increased, the electronic control unit can be assembled without any problem.

More specifically, as described in JP-A-4-43724 and JP-A-9-289689, a centralized control unit (third electronic control unit) is arranged on the back side of the operation panel, and further behind it. In the configuration in which the first and second electronic control units are arranged, there is a problem that the length in the depth direction increases when viewed as a whole of the vehicle electronic device. Since the length in the depth direction can be minimized, such a problem is solved. In addition, Japanese Patent Application Laid-Open Nos. 8-295181 and 10-2
No. 72993, a centralized control unit (third
Electronic control unit) is located at the extreme end,
When the thicknesses of the first electronic control unit and the second electronic control unit are large, it is not preferable to change the arrangement of the centralized control unit.
Although the electronic control unit will protrude greatly,
-It is difficult to secure a large space in the instrument panel for the case where the second electronic control unit becomes large, and if the thickness of the electronic control unit disposed in the middle becomes large, the central control unit Since the mounting position itself of the electronic control unit located on the side opposite to the side where the central control unit is located is shifted, it is difficult to attach the electronic control unit located on the side opposite to the side where the centralized control unit is located. Although there is a problem, in the configuration according to the first aspect, even if the thickness of the first electronic control unit and the second electronic control unit is increased, the amount of protrusion of each is small (because it protrudes dispersedly on both sides). The degree of freedom of the layout is high, and the arrangement of the first electronic control unit and the second electronic control unit on the third electronic control unit side does not change. Whether an electronic control unit of size, it is possible to share the mounting structure of the electronic control unit, such a problem can be solved.

According to the third aspect of the present invention, the third electronic control unit is formed with a projection projecting from an end thereof, and the first electronic control unit is adjacent to the third electronic control unit by the projection. By forming the concave portion for housing, the components of the third electronic control unit can be laid out in the convex portion that can secure the internal space, and the thickness in the direction in which the electronic control units are arranged in parallel Can be minimized.

According to the fourth aspect of the present invention, the third electronic control unit is formed with a projection projecting downward from an end thereof, and the first electronic control unit is connected to the lower portion of the third electronic control unit by the projection. Since the first electronic control unit disposed in the concave portion is inferior in heat radiation, the first electronic control unit is disposed below the third electronic control unit. Is done.
Therefore, since the heat generated in the third electronic control unit goes upward, the heat generated in the third electronic control unit is less likely to be transmitted to the first electronic control unit, thereby improving the heat radiation.

Further, the components of the third electronic control unit can be laid out in the convex portions that can secure the internal space, and the thickness in the direction in which the electronic control units are arranged in parallel can be minimized.

According to the fifth aspect of the present invention, the third electronic control unit and the operation panel are formed separately from each other and are configured to be detachable by the connector. Since different designs can be attached to the electronic control unit, the degree of freedom of replacement when viewed in unit units is increased.

According to the sixth aspect of the present invention, the display unit or the storage medium insertion port is provided adjacent to the operation panel rather than facing the interior of the vehicle from the opening of the operation panel. Therefore, even if the display panel or the inside of the vehicle interior of the insertion opening of the storage medium is flush with the operation panel surface as much as possible,
When assembling the electronic control unit to the third electronic control unit, it is possible to assemble the electronic control unit without interference between the operation panel and its display unit or the insertion opening of the storage medium.

According to the invention of claim 7, the projection has the third
Since the connector for connecting the electronic control unit to the vehicle body is provided, the connector to the vehicle body is provided below the protrusion, that is, below the third electronic control unit. Generally, the wiring from the vehicle body is extended from below, so that the length of the wiring can be reduced, and cost and weight can be reduced.
In addition, the connector can be laid out in the convex portion that can secure the internal space, and the thickness in the direction in which the electronic control units are arranged in parallel can be minimized.

According to the eighth aspect of the present invention, the connector for electrically connecting the second electronic control unit is provided on the upper surface of the projection of the third electronic control unit. The mounting strength can be increased to prevent breakage.

According to the ninth aspect of the invention, the storage medium inserted into the first electronic control unit is smaller than the storage medium inserted into the second electronic control unit. Since it is smaller, it is possible to minimize the risk of interference with, for example, the shift of the vehicle transmission. In addition, since the small storage medium is laid out on the side of the third electronic control unit where the protrusion is provided, the size of the vehicle electronic device in the vehicle interior direction can be reduced.

According to the tenth aspect, the connector is
A first connector mounted on one surface of a circuit board built in the third electronic control unit and electrically connected to the first electronic control unit; and a first connector mounted on the other surface of the circuit board and connected to the second electronic control unit By having the second connector for electrical connection, the thickness of the third electronic control unit can be reduced. In addition, since it is directly mounted on the substrate, the cost can be reduced.

According to the eleventh aspect of the present invention, the upper and / or lower ends of the base chassis are opened, and the first and second electronic control units are mounted from the upper or lower ends of the base chassis, so that other electronic components are provided. A control unit can be added and installed. Further, even if the size (particularly the thickness) of the first or second electronic control unit is increased, the problem that the first or second electronic control unit cannot be accommodated in the base chassis can be minimized. still,
There is no need to increase the internal space of the base chassis in advance, and downsizing of the vehicle electronic device can be achieved.

According to the twelfth aspect, the first and the second
At least one of the electronic control units has a first or second
An insertion port for inserting a storage medium to be read by the electronic control unit is provided, and a communication hole for inserting the storage medium corresponding to the insertion port is provided on the operation panel, so that insertion and insertion of the storage medium can be performed. Discharge is easy. Also,
Size (especially thickness) of the first or second electronic control unit
Even if it becomes large, the problem that it cannot be accommodated in the base chassis can be minimized by adjusting the position of the communication hole.
It is not necessary to increase the internal space of the base chassis in advance, and downsizing of the vehicle electronic device can be achieved.

According to the thirteenth aspect of the present invention, the base chassis has a reference mounting portion serving as a reference position for mounting the first and second electronic control units, and the first and second electronic control units are located at positions different from the reference mounting portion. (2) an error allowance mounting portion for mounting the electronic control unit while allowing a position error;
Since at least one connector of the first and second electronic control units is disposed closer to the reference mounting portion than the error-tolerant mounting portion, the connectors can be reliably positioned to prevent damage at the time of connection. .

According to the fourteenth aspect of the present invention, the first connector is provided on one surface of the first electronic control unit to engage with the connector of the third electronic control unit, and the other surface facing the one surface of the first electronic control unit. Is provided with a second connector for electrically connecting the fourth electronic control unit, so that the function can be easily expanded.

According to the fifteenth aspect of the present invention, the first connector and the second connector are provided substantially at the same position on the surfaces facing each other, so that, for example, the first or second electronic control unit is mounted. Even in the case where the fourth electronic control unit is not provided, the fourth electronic control unit and the third electronic control unit can be directly connected to each other by electrical connection, so that the degree of freedom of connection in such a case can be improved.

According to the sixteenth aspect of the present invention, a heat radiation hole is formed in a housing of the first electronic control unit disposed below the third electronic control unit, and the heat radiation hole is built in the first electronic control unit. The heat generated by the control operation unit of the first electronic control unit generally tends to rise upward by being formed except for a portion corresponding to the control operation unit to be performed. At this time, a third electronic control unit which is the center of the vehicle electronic equipment and is possibly important (when the third electronic control unit fails due to heat, there is a concern that the operation of the switch may not be accepted at all) is provided thereabove. But
The problem of adversely affecting the third electronic control unit can be minimized.

According to the seventeenth aspect of the present invention, a heat radiation hole is formed on the side surface of the casing of the first electronic control unit, and the heat radiation hole of the first electronic control unit is formed on the side surface of the convex portion of the third electronic control unit. Since the heat radiation holes are formed at positions corresponding to the holes, the heat radiation of the electronic control unit disposed below the third electronic control unit can be enhanced.

According to the eighteenth aspect, the fixing means for directly fixing and holding the circuit board incorporated in the third electronic control unit and the circuit board incorporated in the first or second electronic control unit is provided. With this arrangement, even if vibration occurs, the substrates are directly fixed to each other, so that an excessive load can be prevented from being applied to the connector due to the vibration. On the other hand, a method of floatingly supporting the connector itself is known. However, the floating structure needs to support a very small connector in a floating state, which causes an increase in cost. On the other hand, vibration countermeasures can be made at a lower cost.

According to the nineteenth aspect, the first and the second
At least one of the electronic control units is supported by the base chassis via an elastic body so that the electronic control unit itself can be slightly displaced with respect to the third electronic control unit. Since the connector is floatingly supported, it is possible to prevent an excessive load from being applied to the connector due to the vibration. On the other hand, a method of floating the connector itself is known. However, the floating structure needs to support a very small connector in a floating state, which causes an increase in cost. On the other hand, vibration countermeasures can be made at a lower cost.

According to the twentieth aspect, the first and the second
The error tolerance of the elastic body along the fitting direction of at least one connector of the electronic control unit and the connector of the third electronic control unit is set smaller than the error tolerance in other directions than the fitting direction. In addition, when the connector is fitted, displacement in a direction that does not require an allowable width can be restricted to increase the mounting strength.

According to the twenty-first aspect of the present invention, there is provided a determining means for determining whether or not a combination registered in advance between the third electronic control unit and at least one of the first and second electronic control units, The determination means communicates between the third electronic control unit and at least one of the first and second electronic control units to prohibit execution of at least one of the control functions of the first and second electronic control units. Even if one of the first to third electronic control units is stolen, the execution of the control function of the unit is prohibited, so that theft can be prevented.

According to the twenty-second aspect of the present invention, the first and the second
Since the third electronic control unit, which is electrically connected directly to the electronic control unit, includes the determination unit, the determination by the determination unit can be performed very easily.

According to the twenty-third aspect, the first and the second
The electronic control unit includes drive means for driving the storage medium to read the predetermined data from the storage medium, and the third electronic control unit does not include drive means for driving the storage medium to read the predetermined data from the storage medium. Thereby, since the first and second electronic control units including the driving unit are arranged on both sides of the third electronic control unit not including the driving unit, the heat generated from the driving unit can be easily released from the vehicle electronic device, Heat dissipation can be improved. At this time, the third electronic control unit is sandwiched between the first and second electronic control units. However, since the third electronic control unit is not provided with a driving unit,
There is no heat generated by the driving means, and the heat dissipation of the vehicle electronic device as a whole can be optimized at a high level.

[0063]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is an exploded view of the vehicle electronic device of the present embodiment. FIG. 2 is a front view of the operation panel.

As shown in FIGS. 1 and 2, the vehicular electronic apparatus of the present embodiment reads out and reproduces information stored in an acoustic storage medium such as a cassette tape or a mini disk (MD). A unit 20, a second electronic control unit 30 that reads and reproduces information stored in an acoustic storage medium such as a compact disk (CD), and integrally controls the first and second electronic control units 20, 30; In addition, a third electronic control unit 40 having a radio tuner function, and first to third electronic control units 20
Operation panel 10 that can be operated intensively by occupants
The first to third electronic control units 20 to 40 are disposed on the back side of the operation panel 10 with the operation panel 10 facing the interior of the vehicle.

More specifically, the first electronic control unit 20 reads and reproduces information stored in a cassette tape player, MD player, or other storage medium of the same size, and the second electronic control unit 30 controls the first electronic control unit. Examples include a CD player for reading and reproducing information stored in a storage medium having a size larger than the storage medium of the unit 20, and a CD player with a CD changer function capable of storing a plurality of CDs.

The first and second electronic control units 20,
Needless to say, 30 may have a function of writing information to a storage medium.

On one side of the operation panel 10 facing the interior of the vehicle, an operation switch 11 for operating each electronic control unit such as a radio, a CD, a cassette tape, and an MD, and an operation mode of each electronic control unit are displayed. A panel display device 12 such as an LCD and a panel communication hole 14 for inserting or ejecting a storage medium into and from the second electronic control unit 30 are provided. The display data of the unit is displayed in segments and characters.

A base chassis 1 detachably fixed to the vehicle body is detachably attached to the operation panel 10, and the first to third electronic control units 20 to 40 are detachably fixed to the base chassis 1 and operated. The panel 10 is provided on the other side surface.

The base chassis 1 is removably mounted in the mounting recess P1 of the instrument panel P shown in FIG.

The third electronic control unit 40 is detachably fixed to the base chassis 1, receives a switch signal from an operation switch, and transmits a control signal corresponding to the switch signal to the first and second electronic control units 20. , 30 and output. The third electronic control unit 40 is electrically connected by a connector between the operation panel 10 and the first and second electronic control units 20 and 30 so as to be able to communicate with each other. It is arranged between the electronic control units 20, 30.

The first electronic control unit 20 is
A and a vehicle interior side surface portion 20B protruding from the housing portion 20A to the vehicle interior side.

The operation panel 10 has a pair of protrusions 15 formed integrally with the panel, and the pair of protrusions 15 are formed on the periphery of the vehicle interior side surface 20B of the first electronic control unit 20 when viewed from the vehicle interior side. A recess for surrounding the unit and the text display device 22 and for facing the vehicle interior is formed, and at least one of the pair of protrusions 15 is provided with a volume switch as an operation switch 11 for adjusting the volume of the sound function. You.

As a result, the operation switches are disposed in the dead spaces existing on both sides of the vehicle interior side surface portion 20B of the first electronic control unit 20 to save space, and to create a sense of unity with the operation panel and to improve the appearance. Appearance is improved.

FIG. 3 is a diagram showing a mounting structure of the vehicle electronic control unit of the present embodiment in a vehicle interior.

As shown in FIG. 3, the operation panel 10 and the first to third electronic control units 20 to 40 fixed by the base chassis 1 are provided in front of the vehicle cabin where instruments such as a speedometer are provided. The operation switch 11 and the text display device 12 of the operation panel 10 are mounted on the mounting recess P1 between the driver's seat and the passenger's seat in the instrument panel P, and can be operated by an occupant. The operation panel 10 abolishes the operation switches normally provided for each audio device, and can operate the respective audio devices collectively instead.

FIG. 4 is a schematic side view of the vehicle electronic control unit according to the present embodiment.

As shown in FIGS. 1 and 4, the lower end side edge of the third electronic control unit 40 has a convex portion 4 projecting downward.
1 is formed, and the convex portion 41 is provided in the first electronic control unit 2.
0 is formed in the lower part of the third electronic control unit 40 to form a concave portion that is opened downward. Thus, although the first electronic control unit 20 disposed in the recess is inferior in heat dissipation, the first electronic control unit 20
Is disposed below the third electronic control unit 40, the heat generated in the third electronic control unit 40 goes upward, so the heat generated in the first electronic control unit 20 in the third electronic control unit 40 is It is difficult to be transmitted, and thus the heat dissipation is improved.

Further, the components of the third electronic control unit 40 can be laid out in the convex portion 41 which can secure the internal space, and the first to third electronic control units can be laid out in the vertical direction. Can be minimized.

Third electronic control unit 40 and operation panel 1
0 is formed integrally or separately, and in the case of a separate body, it is detachably and electrically connected by connectors 13 and 43, and is physically and mechanically detachably connected.

Third electronic control unit 40 and operation panel 1
When the control panel 10 is formed separately and detachably configured by the connectors 13 and 43, the operation panel 10 can be attached to the third electronic control unit 40 with a different design according to the type of the vehicle. The degree of freedom in replacement when viewed in units increases.

The side 2 of the cabin of the first electronic control unit 20
The first electronic control unit 20 is formed so as to be substantially flush with the operation panel surface in a state where the first electronic control unit 20 is housed under the third electronic control unit 40, and is read from the storage medium of the first electronic control unit 20. A text display device 22 for displaying the displayed display data is integrally provided, and a vehicle compartment side-portion insertion port 23 for inserting and discharging a storage medium is formed.

As a result, the optional first electronic control unit 20 is formed integrally with the text display device 22 delivered at the same time, so that the cost can be reduced and parts management can be facilitated. Since a different design can be attached to the third electronic control unit 30 according to the vehicle type or the like, the degree of freedom of replacement when viewed in unit units increases.

The text display device 22 and the vehicle side wall insertion port 23 are provided adjacent to the operation panel 10 rather than facing the vehicle interior from the operation panel 10. Therefore, the text display device 22 and the vehicle interior side surface of the vehicle interior side surface insertion portion 23 are made as flush as possible with the operation panel surface.
The first electronic control unit 20 is replaced with the third electronic control unit 40
When assembling, the operation panel 10 and the text display device 22 or the vehicle interior side portion insertion opening 23 can be assembled without interference.

The third electronic control unit 40
Connector 42 for electrically connecting to the vehicle body side wiring (not shown)
Are arranged, and the connector 42 is arranged below the projection 41, that is, below the third electronic control unit 40. Generally, the wiring from the vehicle body is extended from below, so that the length of the wiring can be reduced, and cost and weight can be reduced.
Further, the connector 42 can be laid out in the convex portion 41 for which an internal space can be secured, and the vertical thickness when the first to third electronic control units 20 to 40 are arranged in parallel can be minimized. it can.

On the upper surface of the convex portion 41 of the third electronic control unit 40, a connector 44 for electrically connecting to the connector 31a of the second electronic control unit 30 is provided. Is provided with a connector 45 for electrically connecting to the connector 21 a of the first electronic control unit 20.

Since the connector 44 for electrically connecting the second electronic control unit 30 is provided on the upper surface of the convex portion 41 of the third electronic control unit 40, the mounting strength of the connector 44 can be increased. Damage can be prevented.

Further, the connector 44 can be laid out in the convex portion 41 for which an internal space can be secured, so that the thickness in the vertical direction when the first to third electronic control units are arranged in parallel can be minimized. it can.

Further, since the storage medium inserted into the first electronic control unit 20 is smaller than the storage medium inserted into the second electronic control unit 30, the third electronic control unit 4
The storage medium inserted below 0 is smaller. Therefore, it is possible to minimize the concern of interfering with the shift of the vehicle transmission, for example. In addition, since the small storage medium is laid out on the side of the third electronic control unit 40 where the convex portion 41 is provided, the size of the vehicle electronic device in the cabin direction can be reduced.

The connector 44 is connected to the third electronic control unit 40
The connector 45 is directly mounted on the lower surface of the circuit board B3 on the upper surface of the circuit board B3 built therein.

Thus, the thickness of the third electronic control unit 40 can be reduced. Further, since the semiconductor device is directly mounted on the board, the cost can be reduced.

Further, the third electronic control unit 40 includes the operation panel 10 and the first and second electronic control units 20 and 30.
A control signal and display data are electrically connected to each other by a connector so as to be communicable with the first and second electronic control units 20 and 30 on the opposite side of the operation panel 10. Thus, the first and second electronic control units 20 and 30 can be arranged vertically so as to sandwich the third electronic control unit 40, thereby increasing the degree of freedom in layout.

Further, the heat radiation is improved, especially the third electronic control unit 40 and the first and second electronic control units 20, 30.
It is possible to improve the assemblability with a focus on electrical connection between them, and further downsize the electronic device for a vehicle itself. Further, the first or second electronic control unit 2
Even when the sizes of 0 and 30 are increased, assembly becomes possible without any problem.

The connector 21a for engaging with the connector 45 of the third electronic control unit 40 is provided on the upper surface of the first electronic control unit 20.
By providing a connector 21b for electrically connecting another fourth electronic control unit to the lower surface of the device, the function can be easily expanded. Similarly, a connector 31a that engages with the connector 44 of the third electronic control unit 40 is provided on the lower surface of the second electronic control unit 30, and another fourth electronic control unit is electrically connected to the lower surface of the second electronic control unit 30. By providing the connector 31b for connecting to the terminal, the function can be easily expanded.

Then, the connectors 21a and 21b
(Or the connector 31a and the connector 31b) are provided at substantially the same position on the surfaces facing each other. This allows
For example, even when the first or second electronic control unit 20 or 30 is not attached, the fourth electronic control unit and the third electronic control unit 40 can be directly connected to each other by a connector and electrically connected to each other. Therefore, the degree of freedom in connection in such a case can be improved.

Further, in this embodiment, only the panel display device 12 is provided on the operation panel 10 and is separated from the text display device 22 of the first electronic control unit 20. The display device 12 and the text display device 22 may be provided together, and any configuration may be selected according to the cost and the type of the electronic control unit.

The first electronic control unit 20 is provided with a first insertion port 29 for inserting and ejecting a storage medium such as an MD, and the second electronic control unit 30 is used for inserting and storing a storage medium such as a CD. A second insertion port 32 for discharging is provided. Further, the operation panel 10 is provided with a panel communication hole 14 for inserting a storage medium corresponding to the second insertion port 32. The first and second insertion ports 29 and 32 are provided when the first and second electronic control units 20 and 30 have a function of reading a storage medium.

Thus, the storage medium can be easily inserted and ejected. Also, the first or second electronic control unit 2
Even if the sizes (especially the thickness) of 0 and 30 become large, the problem that they cannot be accommodated in the base chassis 1 can be minimized by adjusting the positions of the panel communication holes 14. It is not necessary to increase the internal space of the base chassis 1 in advance, and downsizing of the vehicle electronic device can be achieved.

Further, the first electronic control unit 20 is provided with a first insertion port 29 for inserting and discharging the storage medium on the side surface of the cabin, so that the first electronic control unit can operate in any manner. Even when a storage medium is used, the operation panel 10 does not need to be changed, and the operation panel 10 can be shared.

The height of the side wall 20B of the first electronic control unit 20 is set to be smaller than the thickness of the housing 20A of the first electronic control unit 20.

As a result, the thickness of the text display device 22 facing the cabin side surface portion 20B is reduced by the first electronic control unit 20.
Since the size of the operation panel is smaller than that, the area of the operation panel itself can be increased, and the design is improved.

FIG. 5 is a plan view of the first electronic control unit as viewed from above. FIG. 6 is a front view of the case where the first electronic control unit is a cassette tape player as viewed from the vehicle interior side. FIG. 7 is a front view of the first electronic control unit viewed from the vehicle interior side when the MD player is an MD player.

As shown in FIG. 5, the connector 21a is
An attachment portion 26 is provided on the upper surface of the housing 20 </ b> A of the electronic control unit 20, is accommodated in a concave portion in the third electronic control unit 40, and is fixed to the base chassis 1.

As shown in FIG. 6, when the first electronic control unit 20 is a cassette tape player, the casing side face portion 20B has a casing side face portion insertion opening 23 for inserting and discharging a cassette tape. And an eject switch 24 for instructing ejection of the storage medium. FIG.
As shown in FIG. 1, when the first electronic control unit 20 is an MD player, a text display device 22 such as an LCD for displaying an album name, a song name, and the like recorded on the MD is provided.
A vehicle compartment side portion insertion port 23 for inserting and discharging D;
An eject switch 24 and a display switch 25 for operating the text display device 22 are provided. The text display device 22 displays the display data relating to the MD in dots. At the same time, track display is performed on the common segment display type panel display device 12 on the operation panel.

As described above, since the eject switch 24 for instructing the ejection of the storage medium is provided on the side of the cabin of the first electronic control unit 20, the operation of the eject switch 24 and the operation of the eject switch 24 are controlled by the eject switch 24. Connection with the first electronic control unit 20 is facilitated, and even if the first electronic control unit 20 does not use a storage medium, there is no need to change the operation panel 10, and the common operation panel 10 Can be achieved.

Further, a panel display device 12 is provided on the side of the cabin of the operation panel 10 and a text display device 22 is provided on the side of the cabin of the first electronic control unit 20 so as to be substantially flush with the operation panel surface. Panel display 1
At 2, the display data relating to the second electronic control unit 30 and the display data relating to the first electronic control unit 20 are displayed, and at the text display device 22, other display data relating to the first electronic control unit 20 are displayed. Is displayed, when display data relating to a certain electronic control unit is to be displayed on the display unit, the display area or display time of the display data relating to another electronic control unit is not unnecessarily limited.

If the first electronic control unit 20 is an MD unit or a CD unit, the data read from the MD or CD consists of an unspecified number of characters, so that a considerable space is required to display the character string. But
Even in such a case, the display area or the display time is not unnecessarily limited.

Further, by displaying the character data relating to the second electronic control unit 30 on the text display device via the first electronic control unit 20, the character data relating to the second electronic control unit 30 can be displayed. Even if there is, the character data can be appropriately displayed without increasing the cost.

The first electronic control unit 20 can be arranged on either the upper part or the lower part of the operation panel 10. For example, if the select lever of the automatic transmission is provided on the steering column, the select lever does not hinder the removal of the storage medium regardless of whether the first electronic control unit 20 is disposed on the upper or lower side. Is provided on the front floor at the center of the vehicle width,
A storage medium larger than the electronic control unit 20 (for example, C
A second electronic control unit 30 using D) is arranged above,
If the first electronic control unit 20 is arranged below, it becomes easier to take out the storage medium.

When the side of the cabin of the first electronic control unit 20 is arranged adjacent to the lower part of the operation panel 10 as in the present embodiment, a gap is formed between the operation panel 10 and the text display device. Since the gap exists below the operation panel 10, the gap becomes less noticeable, and the appearance is improved.

On the operation panel 10, a volume switch and a power switch are provided as operation switches 11 on the periphery of the vehicle interior side surface 20 B of the first electronic control unit 20.

Note that the first electronic control unit 20 and the text display device 22 may be formed integrally or separately.

FIG. 8 is a plan view of the second electronic control unit as viewed from above. FIG. 9 is a front view of a switch panel attached to an operation panel when the second electronic control unit is a CD player with a CD changer function, as viewed from the vehicle interior side.

As shown in FIG. 8, the connector 31a is
It is provided on the lower surface of the second electronic control unit 30 corresponding to the upper surface of the projection of the electronic control unit 40, and is mounted on the upper surface of the third electronic control unit 40.

As shown in FIGS. 2 and 9, when the second electronic control unit 30 is a CD player with a CD changer function, the switch panel is located at a position corresponding to the second electronic control unit 30 on the operation panel 10. 50 is mounted. The switch panel 50 has a communication hole 51 with an open / close lid for inserting and ejecting a CD, an eject switch 52, and a load switch 53 for storing a plurality of CDs.
Is provided. When the second electronic control unit 30 does not have the CD changer function, a switch panel in which the switch function of the load switch is omitted is mounted, and when the second electronic control unit 30 is not mounted, the communication hole 51 is provided. A plate-like switch panel from which the eject switch 52 and the load switch 53 are all omitted is mounted.

Thus, the external appearance is improved.
[Electrical Configuration] FIG. 10 is a block diagram showing an electrical configuration of the vehicle electronic control unit shown in FIG.

As shown in FIG. 10, the operation panel 10 and the third electronic control unit 40 are electrically connected by the connector 13 of the operation panel 10 and the connector 43 of the third electronic control unit 40. 11 is input to the CPU 46 of the third electronic control unit 40, and the CPU 46 operates the panel display device 12 of the operation panel 10.
Is displayed, and the first and second electronic control units 20 and 30 are controlled.

The third electronic control unit 40 and the second electronic control unit 30 are connected to the connector 44 on the third electronic control unit 40 side and the connector 31 on the second electronic control unit 30 side.
a of the third electronic control unit 40 in accordance with a switch signal of the operation switch 11.
6 outputs a control signal to the second electronic control unit 30;
The PU 46 controls the display of the panel display device 12 of the operation panel 10 according to the operation mode of the second electronic control unit 30.

The third electronic control unit 40 and the first electronic control unit 20 are connected by a connector 45 on the third electronic control unit 40 side and a connector 21 on the first electronic control unit 20 side.
a of the third electronic control unit 40 in accordance with a switch signal of the operation switch 11.
6 outputs a control signal to the first electronic control unit 20;
The PU 46 controls the display of the panel display device 12 of the operation panel 10 according to the operation mode of the first electronic control unit 20.

The CPU of the third electronic control unit 40
46 controls the radio tuner 47 according to the switch signal of the operation switch 11.

The first electronic control unit 20 is configured to be electrically and physically detachable, directly or indirectly, from the operation panel 10.
The vehicle electronic device according to the present embodiment is configured to achieve at least the control function of the second electronic control unit 30 even when the vehicle is in the detached state.

Accordingly, even when the first electronic control unit 20 is installed with options set,
The display area or the display time of the display data relating to the other electronic control units is not restricted more than necessary.

When character data is included in the storage medium of the second electronic control unit 30, the character data is transferred to the text display device 22 via the first electronic control unit 20.
To be displayed. Thereby, the second electronic control unit 30
Even if character data is included in the storage medium, the display can be appropriately performed.

For example, since display data such as titles and song names are also stored on a CD, if the second electronic control unit 30 is a CD unit, the CD unit reads display data such as titles and song titles from a CD and reads the display data. Display data first
The data is output to the electronic control unit 20, and the first electronic control unit 20 can display the display data of the CD unit by the text display device 22.

If the first electronic control unit 20 is an MD unit, the MD unit reads out display data such as titles and song titles from the MD and displays them on the text display device 22.

The third electronic control unit 40 and the first and second electronic control units
The first and second electronic control units 2 and 30 are communicably connected to each other by a multiplex communication line.
A unique ID code is assigned to each of 0 and 30.
When the third electronic control unit 40 is connected to the first and second electronic control units 20 and 30, it communicates with each electronic control unit to read an ID code, and recognizes the type of each device from the ID code.

Incidentally, by setting a product ID and a failure code in addition to the ID code and displaying the product when a failure or the like occurs, it is easy to deal with the situation at a store or a maker. Further, the product ID and the failure code may be displayed only when a key code is input at a store or a maker.
[Other application examples of operation panel and first to third electronic control units] Next, other application examples of the operation panel and the first to third electronic control units will be described.

In this embodiment, as shown in FIG. 11, the upper and / or lower ends of the base chassis 1 are opened, and the first and second electronic control units 20 and 30 are opened from the upper or lower ends of the base chassis 1. It is attached. Thereby, another electronic control unit can be additionally mounted. Further, even if the size (particularly the thickness) of the first or second electronic control unit 20 or 30 increases, the problem that the first or second electronic control unit 20 or 30 does not fit in the base chassis 1 can be minimized. It is not necessary to increase the internal space of the base chassis 1 in advance, and downsizing of the vehicle electronic device can be achieved.

Further, by forming the mounting recess P1 of the instrument panel P in FIG. 3 in advance to be large, it is possible to mount the MD player 60 with a large MD changer function whose height is almost twice as large.

The upper end and / or lower end of the base chassis 1 is opened, for example, as shown in FIG. 12, in which the first electronic control unit 20 'is housed in a recess opening above the third electronic control unit 40'. In the configuration, if the second electronic control unit 30 is disposed above the first electronic control unit 20 ', a large-sized device such as an MD device with an MD changer function cannot be installed, or the second device as shown in FIG. This is because, when a large-sized device such as the MD device 60 with the MD changer function is arranged in the recess of the electronic control unit 40 ', the inconvenience that other devices cannot be provided is eliminated.

As the first electronic control unit 20, for example, as shown in FIG. 14, a solid audio 70 of a storage medium 71 such as a memory stick having a built-in semiconductor memory is used.
It is also possible to apply

As a combination of other electronic control units for a vehicle, as shown in FIG.
D display, or as a first electronic control unit as shown in FIG.
A DVD, digital broadcast tuner, car navigation, or the like can be applied as the second electronic control unit.

Further, as shown in FIG. 17, another electronic control unit that does not use a storage medium such as a car phone or a digital broadcast tuner is arranged above the second electronic control unit 30 to provide a plurality of electronic control units in multiple stages. You can also lay out. Further, connectors are arranged above and below the same position as the first and second electronic control units so that the other electronic control units can be connected to the third electronic control unit. Further, the operation panel may be formed so as to be higher in the vertical direction assuming a multi-stage layout in advance.

Also, the first and second electronic control units are two
If up to two electronic control units can be mounted in DIN size, more devices can be mounted by integrating the two devices. The device to be integrated may be determined in consideration of cost (in some cases, a separate device may be cheaper) and devices with high integration requirements from market needs.
In the United States, where D player standard equipment is mainstream, FIG.
As shown in (1), there is an advantage that the housing cost and weight can be reduced by integrating the radio tuner and the CD mechanism.

FIG. 19 is a perspective view showing the housing configuration and mounting structure of the first to third electronic control units. FIG. 20 is a sectional view taken along line AA of FIG. FIG. 21 is a side view of FIG. FIG. 22 is a sectional view taken along line BB of FIG. FIG.
FIG. 7 is a plan view of a third electronic control unit and an operation panel.
FIG. 24 is a sectional view taken along line CC of FIG. FIG.
It is a fragmentary sectional view showing the support structure of the 3rd electronic control unit.

As shown in FIG. 19 to FIG. 24, in this embodiment, long heat radiating holes 27a, 27b, 34, and 48 communicating with the inside and outside of the housing are formed in each electronic control unit to improve heat radiation. I have.

More specifically, the housing 20A of the first electronic control unit 20 disposed below the third electronic control unit 40
Are formed with a plurality of heat radiation holes 27a and 27b. These heat radiation holes 27a and 27b are formed except for a portion corresponding to the CPU 28 built in the first electronic control unit 20. Thereby, the CPU 2 of the first electronic control unit 20
The heat generated by 8 generally tends to rise upward. At this time, a third electronic control unit 40 which is the center of the vehicular electronic device and is the most important (there is a fear that if the third electronic control unit 40 fails due to heat, the switch operation will not be accepted at all). Although provided, the problem of adversely affecting the third electronic control unit 40 can be minimized.

The housing 2 of the first electronic control unit 20
A heat radiation hole 27b is formed on the side surface of the first electronic control unit 30, a heat radiation hole 34 is formed on the side surface of the housing of the second electronic control unit 30, and a first heat radiation hole 27b is formed on the side surface of the projection 41 of the third electronic control unit 40. A heat radiation hole 48 is formed at a position corresponding to the heat radiation hole 27b of the electronic control unit 20. Thereby, the heat radiation of the first electronic control unit 20 disposed below the third electronic control unit 30 can be improved.

The base chassis 1 has a reference mounting portion 49a serving as a reference position for mounting the first and second electronic control units 20 and 30, and a first and second electronic control units located at positions different from the reference mounting portion 49. Error-allowable attachment portions 2a, 2 for allowing the position errors of the units 20, 30 to be attached;
b, the first and second electronic control units 20,
30 is at least one of the error tolerance mounting portions 2
By being disposed closer to the reference mounting portion 49a than to the reference mounting portions 49a and 2b, the connectors can be reliably positioned to prevent damage at the time of connection.

In the state where the second electronic control unit 30 is arranged above the third electronic control unit 40, the mounting portion 33b projecting downward from the second electronic control unit 30 and the reference mounting hole 49c of the base chassis 1 are mounted. Attach the screws 3 and fix the error tolerance mounting holes 2 on the left and right of the base chassis 1.
a, 2b and the mounting holes 33a of the second electronic control unit 30 are fixed with the mounting screws 3. At this time, the second electronic control unit 30 and the third electronic control unit 40 are attached to the mounting portion 33b.
Are aligned with the positioning recesses 49a, thereby facilitating the positioning of the connectors of the respective electronic control units and suppressing damage to the connectors. Further, by arranging the connector 44 near the reference mounting hole 49c, errors can be further suppressed.

The left error allowable mounting hole 2a of the base chassis 1
Is positioned in the up-down direction as a long hole extending in the front-rear direction of the electronic control unit so that an error can be allowed in the front-rear direction. Further, the right error permissible mounting hole 2b of the base chassis 1 has a larger diameter than the reference mounting hole 49c so that an error can be permitted. Further, the second electronic control unit 3
One of the holes of the mounting portion 33b is positioned in the up-down direction as an elongated hole extending in the front-rear direction of the electronic control unit so that an error can be allowed in the front-rear direction.

Further, projections 49b are provided at four places on the upper surface of the third electronic control unit 40, and the second electronic control unit 3
By supporting 0 at points, rattling between the electronic control units is prevented, and the gap between the two electronic control units serves as a circulation path for air, thereby improving ventilation.

The first electronic control unit 20 is guided by the concave portion of the third electronic control unit 40 and positioned with respect to the third electronic control unit 40 to facilitate connection of the connector. The part 26 and the convex part of the third electronic control unit are fixed with the mounting screw 3. First
The slits 27 of the electronic control unit 20 are formed on the side surface and the upper surface of the housing, and a slit is not formed in a position corresponding to the CPU 28 in the housing to make it difficult to transfer heat of the CPU to the third electronic control unit. Further, the positions of the slit 27 on the side surface of the housing of the first electronic control unit 20 and the slit 48 on the side surface of the housing of the third electronic control unit 40 are matched to enhance heat radiation.

As shown in FIG. 25, when the second electronic control unit 30 and the third electronic control unit 40 are fixed with the mounting screws 3 on the side surfaces of the casing, the thickness is such that the gap between the casings is filled. When the first electronic control unit 20 and the third electronic control unit 40 are fixed with the mounting screw 3 on the bottom surface of the housing with the rubber bush 5 and the washer 6 interposed, the mounting portion 26 of the first electronic control unit 20 and the housing A thick rubber bush 5 and a washer 6 are provided to fill the gap between the bodies.

First and second electronic control units 20 and 30
The allowable error width of the elastic body along the fitting direction of at least one of the connectors and the connector of the third electronic control unit is:
It is set smaller than the allowable error width in the direction other than the fitting direction. Thereby, the displacement in the direction where the allowable width is not required when the connector is fitted can be restricted, and the mounting strength can be increased.

That is, the thickness of the rubber bush 5 is such that the allowable error width of the first and second electronic control units in the vertical direction (connecting direction) is larger than the allowable error width of the movement in the front-rear and left-right directions. It is set small.

As a result, even if the relative position between the male connector and the female connector is misaligned, an error is allowed by the rubber bush, so that damage to the connector and unreasonable stress can be prevented. [Connector Connection Structure] FIG. 26 is a sectional view showing a connector connection structure between the second electronic control unit and the third electronic control unit. FIG. 27 is a cross-sectional view showing a connection structure using a floating connector.

As shown in FIG. 26, the second electronic control unit 30 is fixed to the board B2 as the female connector 31a, the third electronic control unit 40 is fixed to the board B3 as the male connector 44, and the protrusion 49b Is set so that the distal end of the male connector 44 does not contact the bottom of the female connector 31a, thereby preventing damage to the connector due to a load applied downward from the second electronic control unit 30. .

As shown in FIG. 27, the second electronic control unit 30 is floatingly supported on the board B2 as the female connector 31a, and the third electronic control unit 40 is fixed to the board B3 as the male connector 44. ,
The connector can be prevented from being damaged due to the relative movement of the two electronic control units 30.

The female connector 31a is supported by an elastic body such as a spring so as to be movable in front and rear, left and right and up and down directions while being connected to the board B2 so as to allow relative displacement between the electronic control units. ing.

The circuit board B3 built in the third electronic control unit 40 and the circuit board B2 built in the second electronic control unit 30 (or the third electronic control unit 4
0 and the circuit board B1) built in the first electronic control unit 20 are directly fixed and held by the fixing screw 4, so that even if vibration occurs, the boards can be directly connected to each other. Since the connector is fixed, it is possible to prevent an excessive load from being applied to the connector due to the vibration. On the other hand, a method of floatingly supporting the connector itself is known.
However, the floating structure needs to support a very small connector in a floating state, which causes an increase in cost. On the other hand, vibration countermeasures can be made at a lower cost. [Control of Third Electronic Control Unit] FIGS.
It is a control flowchart of an electronic control unit.

As shown in FIGS. 28 to 30, when the third electronic control unit is electrically connected to the vehicle body, the accessory (ACC) switch is turned on in step S2, and the operation panel is electrically connected in step S4. Is connected from the operation panel to the ID from the operation panel in step S6.
If a code is received (YE in steps S2, S4, S6)
S), it is determined in step S8 whether the ID code of the operation panel has been registered in the third electronic control unit. If the ID code has been registered in step S8 (Y in step S8)
ES), in a step S10, it is determined whether or not the ID code matches the code registered in the third electronic control unit. If the ID codes match in step S10 (YES in step S10), communication with the operation panel is enabled in step S12 to control the display device, and a control signal corresponding to the switch signal input from the operation switch is transmitted to the first control signal. And the second electronic control unit. If the ID codes do not match in step S10 (step S10
NO), and proceeds to step S26 in FIG.

If the ID code has not been registered in step S8 (NO in step S8), the flow advances to step S14 to determine whether an ID code registration instruction signal has been received from the operation panel. If an ID code registration instruction signal is received in step S14 (YE in step S14)
S), the process proceeds to step S16, where a password registered in advance on the operation panel is input.

In the step S18, it is determined whether or not a password has been inputted by the operation switch on the operation panel. If the password is input in step S18 (YES in step S18), it is determined in step S20 whether the password input in step S16 matches the password input in step S18. If the passwords match in step S20 (YES in step S20), an ID code is registered in the third electronic control unit in step S22.

In step S18, the process waits for a password to be input from the operation switch until a predetermined time has elapsed.

In step S26 in FIG. 29, it is determined whether or not the second electronic control unit is electrically connected. If the second electronic control unit is mounted in step S26 (YES in step S26), the second electronic control unit is set in step S28.
An ID code request signal is transmitted to the electronic control unit.

In step S30, it is determined whether an ID code has been received from the second electronic control unit. If the ID code is received from the second electronic control unit in step S30 (YES in step S30), step S32
Proceed to. If the ID code has not been received in step S30 (NO in step S30), the process proceeds to step S50 in FIG.

In the step S32, it is determined whether or not the ID code of the second electronic control unit has been registered in the third electronic control unit. If the ID code has been registered in step S32 (YES in step S32), it is determined in step S34 whether the ID code matches the code registered in the third electronic control unit. If the ID codes match in step S34 (YES in step S34), communication with the second electronic control unit is enabled in step S36 to control the display device, and a control signal according to the switch signal input from the operation switch Is output to the second electronic control unit. If the ID codes do not match in step S34 (NO in step S34), the process proceeds to step S50 in FIG.

If the ID code has not been registered in step S32 (NO in step S32), the flow advances to step S38 to determine whether an ID code registration instruction signal has been received from the operation panel. If an ID code registration instruction signal is received in step S38 (Y in step S38)
ES), and the process proceeds to a step S40 to input a password registered in advance in the second electronic control unit.

In the step S42, it is determined whether or not a password has been inputted by the operation switch on the operation panel. If the password has been input in step S42 (YES in step S42), it is determined in step S44 whether the password input in step S40 and the password input in step S42 match. If the passwords match in step S44 (YES in step S44), an ID code is registered in the third electronic control unit in step S46.

In step S48, the process waits for a password to be input from the operation switch until a predetermined time has elapsed.

In step S50 of FIG. 30, it is determined whether the first electronic control unit is electrically connected. If the first electronic control unit is attached in step S50 (YES in step S50), the first electronic control unit is attached in step S52.
An ID code request signal is transmitted to the electronic control unit.

In step S54, it is determined whether an ID code has been received from the first electronic control unit. If an ID code has been received from the first electronic control unit in step S54 (YES in step S54), step S56.
Proceed to. If the ID code has not been received in step S54 (NO in step S54), the process returns.

In step S56, it is determined whether or not the ID code of the first electronic control unit has been registered in the third electronic control unit. If the ID code has been registered in step S56 (YES in step S56), in step 58 I
It is determined whether or not the D code matches a code registered in the third electronic control unit. If the ID codes match in step S58 (YES in step S58), communication with the first electronic control unit is enabled in step S60 to control the display device, and a control signal corresponding to the switch signal input from the operation switch To the first electronic control unit. If the ID codes do not match in step S58 (NO in step S58), the process returns.

If the ID code has not been registered in step S56 (NO in step S56), the flow advances to step S62 to determine whether an ID code registration instruction signal has been received from the operation panel. If the ID code registration instruction signal is received in step S62 (Y in step S62)
ES), and proceeds to the step S64 to input a password registered in advance in the first electronic control unit.

In the step S66, it is determined whether or not a password is inputted by the operation switch on the operation panel. If the password has been input in step S66 (YES in step S66), it is determined in step S68 whether the password input in step S64 and the password input in step S66 match. If the passwords match in step S68 (YES in step S68), an ID code is registered in the third electronic control unit in step S70.

In step S72, the process waits for a password to be input from the operation switch until a predetermined time has elapsed.

According to the above control, the operation panel can be removed in order to prevent theft when the user gets off or leaves the vehicle, but there is a possibility that another electronic control unit may be stolen. Therefore, the third electronic control unit 40
And the operation panel 10, the first and second electronic control units 20,
By verifying the ID code among the 30 and making it communicable only when the ID code matches, even if it is stolen, it can be made unusable for other systems.

That is, it is determined whether or not the combination registered in advance between the third electronic control unit 40 and at least one of the first and second electronic control units 20 and 30 is determined.
Communication between the third electronic control unit 40 and at least one of the first and second electronic control units 20 and 30 prohibits execution of the control function of at least one of the first and second electronic control units 20 and 30. By doing so, even if any of the first to third electronic control units 20 to 40 is stolen, execution of the control function of that unit is prohibited, so that theft can be prevented beforehand.

Further, the first and second electronic control units 2
Since the determination is made by the third electronic control unit 40 that is electrically coupled directly to 0 and 30, the determination can be made very easily.

It is to be noted that whether or not the identification of the ID code or the password is performed can be selected by the user. For example, when the identification of the ID code is canceled at the time of product shipment, various methods such as turning on an accessory switch while pressing a predetermined switch in order to cancel the state (that is, to make the identification) can be used. A method is conceivable.

Thus, inconveniences such as the electronic control unit not operating during product assembly can be suppressed.

As another method, a power supply such as a capacitor that lasts only for a short time is mounted inside the third electronic control unit so that the electronic control unit can be attached and removed only until the power supply is turned off. ,
The third electronic control unit determines the voltage of a predetermined terminal of the newly connected electronic control unit, and if the voltage is lower than the predetermined voltage, the third electronic control unit does not recognize the electronic control unit.
The electronic control unit stores the number of attachments and removals of other electronic control units, and if the number exceeds a predetermined number, communication is disabled. However, a method of making communication possible if the passwords match is considered. [Control of Operation Panel] FIG. 31 is a control flowchart of the operation panel.

As shown in FIG. 31, in a state where the electronic control unit is electrically connected to the third electronic control unit, step S80 is performed.
If there is a switch operation (YES in step S80)
S), in step S82, the switch signal and the operation panel I
Send the D code to the third electronic control unit.

In step S84, it is determined whether or not the ID code registration switch has been operated. If the registration switch has been operated in step S84 (YES in step S86),
In step S86, an ID code registration instruction signal is transmitted to the third electronic control unit. If there is no operation of the registration switch in step S84 (NO in step S84), the process proceeds to step S94.

In step S88, it is determined whether or not a predetermined time has elapsed. If the predetermined time has elapsed (YES in step S88), the process proceeds to step S94. If not (NO in step S88), the process proceeds to step S90.

In step S90, it is determined whether or not a password input operation has been performed before a predetermined time has elapsed, and if an input operation has been performed (YES in step S90), the flow advances to step S92.
If there is no input operation (NO in step S90), the process returns to step S88.

In step S92, the personal identification number is transmitted to the third electronic control unit. In step S94, the display device is driven according to the control signal from the third electronic control unit. [Control of First Electronic Control Unit] FIG. 32 is a control flowchart of the first electronic control unit.

As shown in FIG. 32, in a state of being electrically connected to the third electronic control unit, step S96
If the request signal is received from the third electronic control unit (YES in step S96), an ID code registered in advance in the first electronic control unit is transmitted to the third electronic control unit in step S98.

In step S100, the first electronic control unit is driven according to a control signal from the third electronic control unit. [Control of Second Electronic Control Unit] FIG. 33 is a control flowchart of the second electronic control unit.

As shown in FIG. 33, in a state of being electrically connected to the third electronic control unit, step S10
If a request signal is received from the third electronic control unit in step 2 (YES in step S102), step S1
At 04, an ID code registered in advance in the second electronic control unit is transmitted to the third electronic control unit.

In step S106, the second electronic control unit is driven according to the control signal from the third electronic control unit.

The present invention can be applied to a modification or a modification of the above embodiment without departing from the gist of the invention.

For example, the first to third electronic control units of the present invention include an air conditioner, and in that case, an operation switch of the air conditioner may be arranged on an operation panel so as to be operable.

In the above example, the first electronic control unit 20 is an MD unit, and the second electronic control unit 30 is a C unit.
D unit, but the first electronic control unit 20
The D unit and the second electronic control unit 30 may be MD units. In this case, C is displayed by the text display device 22 of the first electronic control unit (CD unit) 20.
In addition to displaying the display data of the D unit, the text display device 22 may also display the display data of the MD unit.

[Brief description of the drawings]

FIG. 1 is an exploded view of a vehicle electronic device according to an embodiment.

FIG. 2 is a front view of an operation panel.

FIG. 3 is a diagram illustrating a mounting structure of the vehicle electronic device according to the embodiment in a vehicle compartment.

FIG. 4 is a schematic side view of the vehicle electronic device of the embodiment.

FIG. 5 is a plan view of the first electronic control unit as viewed from above.

FIG. 6 is a front view of the first electronic control unit as seen from the vehicle interior side when the cassette tape player is used.

FIG. 7 is a front view of the first electronic control unit as viewed from the vehicle interior side when the MD player is an MD player.

FIG. 8 is a plan view of the second electronic control unit as viewed from above.

FIG. 9 is a front view of a dedicated panel attached to an operation panel when the second electronic control unit is a CD player with a CD changer function, as viewed from the vehicle interior side.

10 is a block diagram showing an electrical configuration of the vehicle electronic device shown in FIG.

FIG. 11 is a diagram illustrating another application example of the operation panel and the first to third electronic control units.

FIG. 12 is a diagram illustrating a layout problem of the operation panel and the first to third electronic control units.

FIG. 13 is a diagram illustrating a layout problem of the operation panel and the first to third electronic control units.

FIG. 14 is a diagram illustrating another application example of the operation panel and the first to third electronic control units.

FIG. 15 is a diagram illustrating another application example of the operation panel and the first to third electronic control units.

FIG. 16 is a diagram illustrating another application example of the operation panel and the first to third electronic control units.

FIG. 17 is a diagram illustrating another application example of the operation panel and the first to third electronic control units.

FIG. 18 is a diagram illustrating another application example of the operation panel and the first to third electronic control units.

FIG. 19 is a perspective view showing a housing configuration and a mounting structure of the first to third electronic control units.

FIG. 20 is a sectional view taken along line AA of FIG. 19;

FIG. 21 is a side view of FIG. 20;

FIG. 22 is a sectional view taken along line BB of FIG. 21;

FIG. 23 is a plan view of a third electronic control unit and an operation panel.

24 is a sectional view taken along the line CC in FIG. 23.

FIG. 25 is a partial sectional view showing a support structure of the first to third electronic control units.

FIG. 26 is a cross-sectional view showing a connector connection structure between a second electronic control unit and a third electronic control unit.

FIG. 27 is a cross-sectional view showing a connection structure using a floating connector.

FIG. 28 is a control flowchart of the third electronic control unit.

FIG. 29 is a control flowchart of the third electronic control unit.

FIG. 30 is a control flowchart of the third electronic control unit.

FIG. 31 is a control flowchart of an operation panel.

FIG. 32 is a control flowchart of the first electronic control unit.

FIG. 33 is a control flowchart of the second electronic control unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base chassis 10 ... Operation panel 11 ... Operation switch 12 ... Panel display device 20 ... 1st electronic control unit 22 ... Text display device 30 ... 2nd electronic control unit 40 ... 3rd electronic control unit

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Akihiro Fujiwara 3-1, Fuchi-machi, Shinchu, Aki-gun, Hiroshima Mazda Co., Ltd. (72) Inventor Hakufumi Ogawa 3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Stock F term in the company (reference) 3D020 BA02 BA07 BC03 BD03 BE03 5G435 AA12 AA18 EE01 KK01

Claims (23)

[Claims] 1. A base chassis detachably fixed to a vehicle body, and an operation switch for detachably fixing the base chassis and operating a display device and an electronic control unit on one side facing a vehicle compartment. An operation panel, a first and a second electronic control unit detachably fixed to the base chassis, and disposed on the other side surface of the operation panel; and the first and second electronic control units detachably fixed to the base chassis, and A third electronic control unit that inputs an operation signal from an operation switch, selects and outputs a control signal corresponding to the operation signal to the first and second electronic control units, and wherein the third electronic control unit includes: , Signal transmission means for the operation panel and the first and second electronic control units,
An electronic device for a vehicle, wherein the electronic device is disposed between the first and second electronic control units on another side of the operation panel. 2. A first electronic control unit having a predetermined first control function, and a second electronic control unit formed separately from the first electronic control unit and having a predetermined second control function different from the first control function. Second
An electronic control unit, and an operation panel formed separately from the first and second electronic control units and having a plurality of operation switches for operating respective control functions related to the first and second electronic control units. Wherein the first and second electronic control units and the operation panel are formed separately from each other, and which of the first and second electronic control units is operated when the operation switch is operated. And a third electronic control unit that outputs a control signal for operating a control function to the electronic control unit; and electrically couples the first to third electronic control units and the operation panel. Electrical coupling means for causing the operation panel to face the interior of the vehicle, and
A vehicle electronic device in which each of the electronic control units is adjacent to the back side of the operation panel and arranged in parallel, wherein the third electronic control unit is between the first electronic control unit and the second electronic control unit. And electronically connected by connectors to each of the first and second electronic control units. 3. The third electronic control unit is formed with a convex portion projecting from an end thereof, and the first electronic control unit has the first electronic control unit.
The vehicle electronic device according to claim 1 or 2, wherein a concave portion is formed for housing the electronic control unit adjacent to the third electronic control unit. 4. The third electronic control unit has a convex portion projecting downward from an end thereof, and the convex portion allows the first electronic control unit to be housed in a lower portion of the third electronic control unit. The electronic device for a vehicle according to claim 1, wherein a concave portion is formed. 5. The vehicle electronic device according to claim 1, wherein the third electronic control unit and the operation panel are formed separately from each other, and are configured to be detachable by a connector. 6. A first display unit or an insertion slot for inserting a storage medium read by the first electronic control unit is provided on a side surface of the cabin of the first electronic control unit. 5. The vehicle electronic device according to claim 3, wherein the insertion port is disposed adjacent to a side surface of the operation panel, and faces the vehicle interior so as to be substantially flush with the operation panel surface. 6. machine. 7. The vehicle electronic device according to claim 3, wherein a connector for connecting the third electronic control unit to a vehicle body is provided on the projection. 8. The connector according to claim 3, wherein a connector for electrically connecting to the second electronic control unit is provided on an upper surface of the projection of the third electronic control unit. 5. The vehicle electronic device according to 4. 9. The electronic device for a vehicle is disposed between a driver's seat and a passenger seat in an instrument panel, and the control functions of the first and second electronic control units are respectively stored in a storage unit inserted from a passenger compartment side. 3. The vehicle according to claim 1, further comprising a function of reading a medium, wherein a storage medium inserted into the first electronic control unit is smaller than a storage medium inserted into the second electronic control unit. For electronic equipment. 10. A first connector mounted on one surface of a circuit board built in the third electronic control unit for electrically connecting to the first electronic control unit, and a connector of the circuit board. The vehicle electronic device according to claim 1, further comprising a second connector mounted on another surface for electrically connecting to the second electronic control unit. 11. The base chassis according to claim 1, wherein an upper end and / or a lower end of the base chassis is opened, and the first and second electronic control units are mounted from an upper end or a lower end of the base chassis. Electronic equipment for vehicles. 12. An insertion slot for inserting a storage medium read by the first or second electronic control unit is provided in at least one of the first and second electronic control units, and the insertion panel is provided in the operation panel. 10. The vehicle electronic device according to claim 1, wherein a communication hole is provided corresponding to the mouth for inserting the storage medium. 13. The base chassis has a reference mounting portion serving as a reference position for mounting the first and second electronic control units, and the first and second electronic control units are located at positions different from the reference mounting portion. An error permissible mounting portion for mounting while allowing a position error of the unit, wherein at least one connector of the first and second electronic control units is closer to the reference mounting portion than the error permissible mounting portion. The vehicle electronic device according to claim 1, wherein the electronic device is arranged. 14. A first connector for engaging a connector of the third electronic control unit on one surface of the first electronic control unit, and a fourth connector on another surface opposite to one surface of the first electronic control unit. The vehicle electronic device according to claim 1, further comprising a second connector for electrically connecting the electronic control unit. 15. The electronic device for a vehicle according to claim 14, wherein the first connector and the second connector are provided at substantially the same position on surfaces facing each other. 16. A heat-dissipating hole is formed in a housing of the first electronic control unit disposed below the third electronic control unit, and the heat-dissipating hole is built in the first electronic control unit. The vehicular electronic device according to any one of claims 1 to 4, wherein the vehicular electronic device is formed excluding a portion corresponding to the calculation unit. 17. A heat dissipation hole is formed on a side surface of the housing of the first electronic control unit, and a side surface of the projection of the third electronic control unit corresponds to the heat dissipation hole of the first electronic control unit. The vehicle electronic device according to claim 3, wherein a heat radiation hole is formed at the position. 18. A fixing device comprising a fixing means for directly fixing and holding a circuit board built in the third electronic control unit and a circuit board built in the first or second electronic control unit. The vehicle electronic device according to claim 1. 19. At least one of the first and second electronic control units is supported by the base chassis via an elastic body so as to be capable of being slightly displaced with respect to the third electronic control unit. The vehicular electronic device according to claim 1, wherein: 20. An error tolerance width of the elastic body along a fitting direction of at least one connector of the first and second electronic control units and a connector of the third electronic control unit is other than the fitting direction. 20. The vehicular electronic device according to claim 19, wherein the vehicle electronic device is set to be smaller than an allowable error width. 21. A determination means for determining whether or not a combination registered in advance between the third electronic control unit and at least one of the first and second electronic control units, wherein the determination means comprises: The third electronic control unit and the first electronic control unit;
3. The communication between at least one of the first and second electronic control units to inhibit execution of at least one of the first and second electronic control units. 4. Vehicle electronics. 22. The vehicular electronic device according to claim 21, wherein said determination means is provided in said third electronic control unit. 23. The first and second electronic control units each include driving means for driving a storage medium to read predetermined data from a storage medium, and the third electronic control unit reads predetermined data from a storage medium. The vehicle electronic device according to claim 1, further comprising no driving unit for driving a storage medium.