JP6208088B2 - Electronic control device and electronic control device mounting structure - Google Patents

Description

  The present invention relates to an electronic control device including a wireless antenna and an attachment structure of the electronic control device.

In an electronic control device that communicates with the outside wirelessly, a wireless antenna is housed in a housing partly or entirely formed of a metal member in order to prevent destruction of electronic components due to static electricity. Although there is a structure in which the entire housing is formed of resin, it is attached to a device such as a vehicle on which the electronic control device is mounted by a metal attachment member.
Since the radio wave is absorbed by the metal member and the gain (gain) is reduced, it is desirable that the metal member be separated as much as possible from the periphery of the radio antenna.

  2. Description of the Related Art Conventionally, a small wireless device is known in which a copper foil pattern serving as a reference ground for a wireless antenna is divided into two parts on a circuit board on which the wireless antenna is mounted and connected to each other by an inductance element. This small wireless device is configured as a mobile phone, for example, and has a structure in which an antenna is disposed outside the housing and a metal plate is disposed on the outer surface of the housing in the vicinity of the antenna (for example, the specification of Patent Document 1). [0053]).

JP 2007-174540 A

  In the small wireless device described in the above-mentioned patent document, since the antenna is provided outside the housing, there is a concern about the damage of the antenna, and it is not suitable for in-vehicle use. For this reason, there is a demand for an electronic control device in which an antenna is housed in a housing and suppresses a decrease in gain and electrostatic breakdown.

(1) An electronic control device according to a first aspect of the invention accommodates a circuit board on which at least one surface is provided with a radio antenna and a radio communication circuit, and accommodates the circuit board while enabling the radio antenna to emit and receive electromagnetic waves. and a housing, the housing having an electrically grounded metal part, wherein the circuit board has a rectangular shape with four sides, on the one face of the circuit board, the before and Symbol radio antenna radio A conductor pattern electrically connected to the metal portion of the housing is formed along each side of the rectangular shape so as to surround a communication circuit, and the electromagnetic wave receiving surface of the wireless antenna is A part of the conductor pattern formed along the adjacent side, which is provided adjacent to the adjacent side, with one side of the four sides of the rectangular shape being the adjacent side on the one surface of the circuit board An opening is provided with the conductor pattern is not formed.
(2) mounting structure of the electronic control unit according to the invention of claim 6 is provided with electronic control apparatus, and a metal mounting member attached to said electronic controller, said electronic control unit, a radio antenna and radio A circuit board having a communication circuit provided on at least one surface; and a housing that accommodates the circuit board while allowing radiation and reception of electromagnetic waves by the wireless antenna. A conductor pattern is formed so as to surround the wireless antenna and the wireless communication circuit except for a region extending in a direction in which the electromagnetic wave receiving surface of the antenna faces, and the conductor pattern is formed on a peripheral edge of the circuit board. A pattern having a predetermined width defined by an outer peripheral contour line and an inner peripheral contour line, and the conductor pattern is disposed on the one surface of the circuit board in a direction in which the reception surface of the wireless antenna faces. And at least a first side surface facing the receiving surface of the wireless antenna and a second side surface to which the mounting member is attached are resin covers, and the wireless The distance between the edge of the circuit board in the direction in which the reception surface of the antenna faces and the reception surface of the wireless antenna is a fourth distance, and the wireless antenna in the attachment member connected to the second side surface of the housing When the distance between the surface closest to the receiving surface and the receiving surface of the wireless antenna is the fifth distance, the fifth distance is larger than the fourth distance.

  According to the present invention, it is possible to obtain an electronic control device in which an antenna is housed in a casing and gain reduction and electrostatic breakdown are suppressed.

1 is an external perspective view of an embodiment of an electronic control device of the present invention. The top view of the state which removed the upper cover of the electronic controller shown in FIG. FIG. 3 is a cross-sectional view taken along line III-III of the electronic control device illustrated in FIG. 1. The block circuit diagram of one embodiment of the electronic control unit of the present invention. Sectional drawing of Embodiment 2 of the electronic control apparatus of this invention.

Embodiment 1
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an external perspective view as an embodiment of an electronic control device of the present invention.
The electronic control device 100 includes a housing 104 formed by fixing an upper cover 101, a lower cover 102 (see FIGS. 2 and 3), and a front cover 103 with fastening members such as screws.
In the housing 104, electronic components such as a wireless antenna 204 (see FIGS. 2 and 3) described later and a wireless communication circuit are accommodated.

2 is a plan view of the electronic control device shown in FIG. 1 with the top cover removed, and FIG. 3 is a cross-sectional view of the electronic control device shown in FIG. 1 taken along the line III-III.
The upper cover 101 is formed of a metal member, and has a wide upper surface plate 101a, a pair of narrow upper side plates 101b formed by bending substantially 90 degrees on both sides of the upper surface plate 101a, and an upper surface plate 101a. Each upper side plate 101b has an upper rear side plate 101c bent at approximately 90 degrees. As shown in FIG. 1, hook pieces 101 f that protrude toward the inner surface side of the upper cover 101 are formed on the upper side plates 101 b of the upper cover 101. The hook piece 101f is provided to extend from one side of the rectangular opening 101e and the opening 101e into the opening 101e. As will be described later, the upper hook piece 101f is integrally formed with the upper cover 101 so as to be elastically deformable so as to sandwich the lower side plate 102b of the lower cover 102 from both sides.

The lower cover 102 includes a wide bottom plate 102a facing the top plate 101a, and a pair of narrow lower side plates 102b formed by bending approximately 90 degrees on both sides of the bottom plate 102a. Each lower side plate 102b faces the upper side plate 101b substantially in parallel. The lower cover 102 can be formed of resin or metal, but in the present embodiment, it is assumed that it is formed of metal.
A notch 102 c is provided on the rear side of the bottom plate 102 a of the lower cover 102. A claw portion 101 d is formed on the lower side of the upper side rear side plate 101 c of the upper cover 101.
The front cover 103 is formed of a resin and has a substantially U-shaped cross section having a vertical plate and horizontal plates provided above and below the vertical plate, and the upper and lower horizontal plates are each provided with a female screw portion. It has been.

The housing 104 is formed by the following procedure. A horizontal plate on the lower side of the front cover 103 is fixed to the lower cover 102 by a fastening member 181 such as a screw. The claw portion 101d of the upper cover 101 is engaged with the notch 102d of the lower cover 102, and the upper cover 101 is rotated using the claw portion 101d as a fulcrum. The hook pieces 101f provided on the pair of upper side plates 101b of the upper cover 101 sandwich the lower side plate 102b of the lower cover 102, and the upper cover 101 and the lower cover 102 are temporarily fixed. In this state, the upper surface plate 101a of the upper cover 101 is fixed to the upper side plate of the front cover 103 by a fastening member 182 such as a screw. Thereby, the housing 104 is formed.
In addition, it is good also as fixing with a fastening member instead of engagement with the nail | claw part 101d of the upper cover 101, and the notch 102c of the lower cover 102. FIG. Further, the front cover 103 may be integrally formed with the upper cover 101 or the lower cover 102.

In the housing 104, a circuit board 201, a connector 202, a wireless antenna 204, a wireless communication circuit 205, a control circuit 206, and a power supply circuit 207 are incorporated.
The connector 202, the wireless antenna 204, the wireless communication circuit 205, the control circuit 206, and the power supply circuit 207 are provided on one surface 201a (see FIG. 3) of the circuit board 201. The circuit board 201 is fixed to a plurality of boss portions 191 provided on the bottom plate 102 a of the lower cover 102 by fastening members 183 such as screws.

  On one surface 201 a of the circuit board 201, a substantially annular conductor pattern 210 surrounding the wireless antenna 204, the wireless communication circuit 205, the control circuit 206, and the power supply circuit 207 is provided. The conductor pattern 210 is a pattern having a predetermined width (thickness) defined by an outer peripheral contour line denoted by reference numeral 211a and an inner peripheral contour line denoted by reference numeral 211b. The wireless antenna 204, the wireless communication circuit 205, the control circuit 206, and the power supply circuit 207 are disposed inside the inner peripheral contour line 210 b of the conductor pattern 210 and separated from the inner peripheral contour line 210 b.

The circuit board 201 has a substantially rectangular shape, and one end edge 201b is disposed on the front cover 103 side so as to be separated from the inner surface of the front cover 103 and extend in parallel to the inner surface of the front cover 103.
The conductor pattern 210 is formed along the peripheral edge of the circuit board 201, and is formed on the inner side of the one end edge 201 b of the circuit board 201 with a region 211 a extending substantially parallel to the one end edge 201 b of the circuit board 201. 211b. An antenna opening 212 is formed between the conductor pattern regions 211a and 211b.
In the circuit board 201, through holes that also penetrate the conductor pattern 210 are formed at four corners of the circuit board 201, and a fastening member 183 that fastens the circuit board 201 to the lower cover 102 via the boss 191. And electrically connected to the lower cover 102.
Thereby, the conductor pattern 210 functions as an electrostatic protection conductor that allows static electricity to flow to the ground.

As described above, the opening 212 is formed between the pair of regions 211 a and 211 b of the conductor pattern 210. The radio antenna 204 is disposed such that the center of the electromagnetic wave receiving surface faces the center of the opening 212, in other words, the center of the separation distance between the pair of regions 211a and 211b.
Specifically, the reception surface of the wireless antenna 204 is mounted on the same line as or on the inner side of the inner peripheral contour line 210 b of the conductor pattern 210.
The wireless antenna 204 is an antenna element for performing data communication in a short-distance area of about 10 m or 100 m in the 2.4 GHz band (ISM band) conforming to, for example, the Bluetooth (registered trademark) standard. As an example of the wireless antenna 204, a helical antenna having a thickness of about 1 mm or less in which a coil is wound around a core can be used. However, it is not limited to this.

2, to the one end edge 201b of the front cover 103 side of the circuit board 201, a pair of regions 211a of the conductor pattern 210, a first distance L ₁ and the distance between the outer contour line 210a of 211b. Further, the second distance L ₂ the distance between the receiving surface of the one edge 201b and the radio antenna 204 of the front cover 103 side of the circuit board 201.
The first distance L ₁ and the second distance L _{2 are} set to satisfy the expression (1).
L ₂ > L ₁ formula (1)

By satisfying Expression (1), static electricity on the front cover 103 side enters the pair of regions 211 a and 211 b of the conductor pattern 210. For this reason, inflow of static electricity from the opening 212 between the pair of regions 211a and 211b of the conductor pattern 210 to the wireless antenna 204 can be prevented, and destruction of the wireless antenna 204 due to static electricity can be prevented.
Note that when the wireless antenna 204 has directivity, it is preferable that the direction in which the gain of the wireless antenna 204 is maximized coincide with the center of the opening 212.

3, the distance between the inner surface and the receiving surface of the radio antenna 204 of the upper plate 101a of the upper cover 101 and H _1. The distance between the inner surface and the receiving surface of the radio antenna 204 of the bottom plate 102a of the lower cover 102 and H _2. The smaller distance between H ₁ and H ₂ is defined as a third distance H.
The third distance H and the second distance L ₂ satisfy the expression (2).
H> L ₂ formula (2)

By satisfying Expression (2), it is possible to suppress a decrease in radio wave gain.
That is, if a metal is disposed around the wireless antenna 204, the gain of the radio wave is reduced. However, by taking the third distance H greater than the second distance L ₂ as shown in Expression (2), it is possible to prevent a decrease in radio wave gain while preventing intrusion of static electricity.

  In the above-described embodiment, the wireless antenna 204 is arranged at substantially the center of one end edge of the circuit board 201, but the wireless antenna 204 is arranged on the lower side plate 102 b of the lower cover 102 or the upper side of the upper cover 101. It can also be set as the structure arrange | positioned in the vicinity of the face plate 101b. In such a structure, the distance between the lower side plate 102b or the upper side plate 101b and the radio antenna 204 may be smaller than the distance between the top plate 101a or the bottom plate 102a and the radio antenna 204. In that case, the distance between the lower side plate 102b or the upper side plate 101b and the radio antenna 204 is set to H, so that the formula (2) is satisfied. That is, the distance between the wireless antenna 204 and the metal cover closest to the wireless antenna 204 is defined as the third distance H so that the expression (2) is satisfied.

In FIG. 2, when the length of the receiving surface of the wireless antenna 204 is W ₁ and the distance between the pair of regions 211a and 211b of the conductor pattern 210, that is, the opening length of the opening 212 is W ₂ , The expression (3) is satisfied.
W ₂ > W ₁ formula (3)
If the conductor pattern 210 surrounds the front cover 103 side of the wireless antenna 204, the radio wave gain is reduced. By adopting a configuration that satisfies Expression (3), a decrease in gain can be prevented.

FIG. 4 shows a block circuit diagram of the electronic control unit 100.
The electronic control device 100 is mounted on a vehicle such as an automobile so that wireless communication with a mobile terminal such as a mobile phone is possible. The electronic control device 100 includes a wireless antenna 204, an antenna matching circuit 208, a wireless communication circuit 205, a control circuit 206, and a power supply circuit 207. In addition, as described with reference to FIGS. 2 and 3, the electronic control device 100 includes a substantially annular conductor pattern 210 formed on the circuit board 201 and a connector 202.

  A power supply (VB) 400 supplied from a battery (not shown) is supplied to a power supply circuit 207 inside the electronic control unit (ECU) 100 via a connector 202. The power supply circuit 207 generates a positive power supply voltage (VCC) to be supplied to signal-related elements such as a control circuit 206 that controls signal processing and a wireless communication circuit 205.

  The control circuit 206 includes a CPU, a memory, and the like, and controls the operation of the ECU 100. When wireless communication is performed with an external device such as a mobile terminal, the control circuit 206 controls the wireless communication circuit 205 to exchange data via the antenna matching circuit 208 and the wireless antenna 204. The antenna matching circuit 208 matches the characteristic impedance between the wireless antenna 204 and the wireless communication circuit 205.

  The conductor pattern 210 is connected to the GND of the control system such as the power supply circuit 207 and the GND GND_A of the connector 202 through the path indicated by the one-dot chain line in FIG. 4, and is connected to the GND of the vehicle. For this reason, the static electricity absorbed by the conductor pattern 210 falls directly to the GND of the vehicle via the GND_A and the connector 202, and the static electricity does not flow to the wireless antenna 204 and other circuit portions. Thereby, destruction of the wireless antenna 204 and other circuit portions due to static electricity can be prevented.

According to the one embodiment, the following effects are obtained.
(1) An electronic control device according to an embodiment of the present invention includes a circuit board 201 in which a wireless antenna 204 and a wireless communication circuit 205 are provided on at least one surface, and a circuit board while enabling the wireless antenna 204 to emit and receive electromagnetic waves. And a housing 104 for housing 201. A conductor pattern 210 is formed on one surface 201a of the circuit board 201 so as to surround the wireless antenna 204 and the wireless communication circuit 205 except for a region extending in a direction in which the electromagnetic wave receiving surface of the wireless antenna 204 faces. Yes.
Of the housing 104 of the electronic control device according to the embodiment, at least a side surface facing the reception surface of the wireless antenna 204 is a resin cover 103, and the wireless antenna 204 is a circuit board close to the side surface of the housing on which the resin cover 103 is disposed. 201 is provided on one surface.
In addition, the conductor pattern 210 of the electronic control device according to the embodiment is a pattern having a predetermined width defined by the outer peripheral contour line 211 a and the inner peripheral contour line 211 b along the peripheral edge of the circuit board 201. An opening 212 where the conductor pattern 210 is not formed is provided on one surface 201a of the circuit board 201 in the direction in which the reception surface of the wireless antenna 204 faces, and the reception surface of the wireless antenna 204 has an inner peripheral line 211b of the conductor pattern 210. It is arrange | positioned so that it may become inside.
Therefore, even if the antenna is accommodated in the housing, gain reduction and electrostatic breakdown can be suppressed.

(2) (second distance L ₂ between one end edge 201b of circuit board 201 and the receiving surface of wireless antenna 204)> (first distance L between one end edge 201b of circuit board 201 and outer peripheral contour line 210a of conductor pattern 210) ₁ ).
For this reason, destruction of the radio antenna 204 and other circuit portions due to static electricity can be prevented. In the above, in particular, the radio antenna 204 is disposed so that the reception surface thereof is on the same line as the inner peripheral contour line 210b of the pair of regions 211a and 211b on the front cover side of the conductor pattern 210 or on the inner side thereof. Is preferred.

(3) The distance H ₁ between the inner surface of the top plate 101a of the upper cover 101 and the receiving surface of the wireless antenna 204 and the distance between the inner surface of the bottom plate 102a of the lower cover 102 and the receiving surface of the wireless antenna 204 are either H ₂ . Is larger than the second distance L ₂ . For this reason, it is possible to suppress a reduction in radio wave gain while preventing damage due to static electricity.

(4) (Length W _{2 in the} direction parallel to the front cover 103 of the opening 212 of the conductor pattern 210)> (Length W ₁ of the receiving surface of the wireless antenna 204)
It was.
With this configuration, it is possible to further improve the effect of preventing breakdown due to static electricity and suppressing a decrease in radio wave gain.

Embodiment 2
FIG. 5 is a cross-sectional view of Embodiment 2 of the electronic control device of the present invention.
In the electronic control apparatus 100A according to the second embodiment, the upper cover 101, the lower cover 102, and the front cover 103 that constitute the housing 104 are all formed of resin. The electronic control unit 100A is attached to a metal attachment member 501 such as a vehicle chassis or a bracket by a fastening member 502. The attachment member 501 is attached to the vehicle by a fastening member (not shown).
Other configurations in the second embodiment are the same as those in the first embodiment, and the corresponding members are denoted by the same reference numerals and description thereof is omitted.

In FIG. 5, the distance between the one end edge 201 b of the circuit board 201 on the front cover 103 side and the reception surface of the wireless antenna 204 is a fourth distance L _4, and the distance between the inner surface of the mounting member 501 and the reception surface of the wireless antenna 204 is When the fifth distance H ₃ is set, the fourth distance H ₃ and the second distance L ₂ satisfy the expression (4).
H ₃ > L ₄ formula (4)
The fourth distance L ₄ corresponds to the second distance L ₂ of the first embodiment.

By adopting a configuration that satisfies Expression (4), it is possible to suppress a decrease in radio wave gain while preventing the radio antenna 204 and other circuit units from being damaged by static electricity.
Therefore, the same effects as in the first embodiment can be obtained in the second embodiment.

  In each of the above embodiments, the housing 104 is configured by three covers, that is, the upper cover 101, the lower cover 102, and the front cover 103. However, the housing 104 may be configured by using the upper side plate 101b or the lower side plate 102b as a separate member from the upper cover 101 or the lower cover 102. Moreover, the housing | casing 104 is not a rectangular parallelepiped shape, For example, it can be set as the shape which one part or the whole has a cylindrical shape part, or can be made into other arbitrary shapes.

  In each of the above embodiments, the entire front cover 103 is exemplified as a configuration formed of resin. However, for example, only a part of the front cover 103, that is, a region facing the radio antenna may be formed of resin by outsert molding or the like. Further, in the housing 104, a portion formed of resin can be an arbitrary portion of the upper and lower covers 101 and 102.

  The electronic control device according to the second embodiment includes a circuit board 201 in which a wireless antenna 204 and a wireless communication circuit 205 are provided on at least one surface, and a housing that accommodates the circuit board 201 while allowing the wireless antenna 204 to emit and receive electromagnetic waves. 104. A conductor pattern 210 is formed on one surface 201a of the circuit board 201 so as to surround the wireless antenna 204 and the wireless communication circuit 205 except for a region extending in a direction in which the electromagnetic wave receiving surface of the wireless antenna 204 faces. Yes.

Here, the mounting structure of the electronic control device having the housing 100 in which at least the front surface facing the reception surface of the wireless antenna 204 and the upper surface to which the mounting member 501 is attached is a resin cover is the resin upper surface of the housing 104. The electronic control device is attached to a predetermined location of the vehicle by the attachment member 501. In such modification, the distance between the edge and the receiving surface of the radio antenna 204 in the direction of the circuit board 201 facing the receiving surface of the radio antenna 204 and L _2, the mounting member 501 connected to the upper surface of the housing 104 When the distance between the surface closest to the reception surface of the wireless antenna 204 and the reception surface of the wireless antenna 204 is H ₅ , the distance H ₅ is preferably larger than the distance L ₄ .

  In each of the above-described embodiments, a configuration in which one circuit board 201 is accommodated in the housing 104 is exemplified. However, a plurality of circuit boards 201 may be provided, and some circuits may be provided on a circuit board different from the circuit board on which the wireless antenna 204 is mounted. The GND conductor pattern formed on another circuit board may have a complete annular shape surrounding the entire circuit by 360 degrees.

  Further, other structures such as a mounting structure of the circuit board 201 can be appropriately modified and applied. That is, the present invention includes a circuit board on which at least one surface is provided with a wireless antenna and a wireless communication circuit, and a housing that accommodates the circuit board while allowing radiation and reception of the electromagnetic wave by the wireless antenna. The present invention is applied to various types of electronic control devices in which a conductor pattern is formed on one surface of a circuit board so as to surround a wireless antenna and a wireless communication circuit except for a portion facing the receiving surface.

100, 100A Electronic control device 101 Upper cover 102 Lower cover 103 Front cover 104 Case 201 Circuit board 201a One surface 201b One end edge 204 Radio antenna 210 Conductor pattern 211a Outer peripheral outline 211b Inner peripheral outline 212 Opening 501 Mounting member

Claims (7)

A circuit board having a wireless antenna and a wireless communication circuit provided on at least one surface;
A housing that accommodates the circuit board while enabling radiation and reception of electromagnetic waves by the wireless antenna;
The housing has an electrically grounded metal portion;
The circuit board is a rectangular shape having four sides,
On the one surface of the circuit board, pre SL along each side of the rectangular shape so as to surround the wireless antenna and the wireless communication circuit, said metal portion and electrically connected to the conductive pattern of the casing is formed Has been
The reception surface of the electromagnetic wave of the wireless antenna is provided adjacent to the adjacent side, with one side of the four sides of the rectangular shape being an adjacent side on the one surface of the circuit board,
An electronic control device , wherein an opening in which the conductor pattern is not formed is provided in a part of the conductor pattern formed along the adjacent side . The electronic control device according to claim 1.
Of the housing, at least a partial region of the side surface facing the reception surface of the wireless antenna is a resin cover,
Of the housing, the side surface facing the one surface of the circuit board and the side surface facing the back surface of the one surface are metal covers,
The wireless antenna is an electronic control device in which, on the one surface of the circuit board, a side close to the side surface on which the resin cover is disposed is provided as the adjacent side among the four sides of the rectangular shape . The electronic control device according to claim 1 or 2 ,
The conductor pattern is a pattern having a predetermined width defined by an outer peripheral contour line and an inner peripheral contour line along a peripheral edge of the circuit board ,
The wireless antenna is an electronic control device arranged such that the receiving surface is on the inner side of the inner peripheral contour line of the conductor pattern. The electronic control device according to claim 3.
The distance between the edge of the circuit board that extends in the direction in which the reception surface of the wireless antenna faces is the first distance, and reception of the edge of the circuit board and the wireless antenna The electronic control device, wherein the second distance is greater than the first distance when the distance to the surface is the second distance. The electronic control device according to claim 4.
Of the housing, at least a part of the side surface facing the reception surface of the wireless antenna is a resin cover, and the other region is a metal cover,
The electronic control device, wherein the third distance is larger than the second distance when a distance between the reception surface of the wireless antenna and the surface of the metal cover closest to the reception surface is a third distance. And electronic control device,
A metal attachment member attached to the electronic control device,
The electronic control device has a circuit board on which at least one surface is provided with a radio antenna and a radio communication circuit, and a housing that accommodates the circuit board while allowing the radio antenna to emit and receive electromagnetic waves,
A conductive pattern is formed on the one surface of the circuit board so as to surround the wireless antenna and the wireless communication circuit, except for a region extending in a direction in which the electromagnetic wave receiving surface of the wireless antenna faces.
The conductor pattern is a pattern having a predetermined width defined by an outer peripheral contour line and an inner peripheral contour line along a peripheral edge of the circuit board, and is formed on the one surface of the circuit board in a direction in which the reception surface of the wireless antenna faces. Is provided with an opening in which the conductor pattern is not formed,
Of the casing, at least a first side surface facing the reception surface of the wireless antenna and a second side surface to which the attachment member is attached are resin covers, and the circuit in a direction in which the reception surface of the wireless antenna faces. The distance between the edge of the substrate and the reception surface of the wireless antenna is a fourth distance, and the surface of the mounting member connected to the second side surface of the housing is closest to the reception surface of the wireless antenna, and the wireless The electronic controller mounting structure in which the fifth distance is larger than the fourth distance when the distance from the antenna receiving surface is the fifth distance. The electronic control device mounting structure according to claim 6,
An electronic control device mounting structure in which all the casings are made of resin.

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