JP7318426B2 - electronic controller - Google Patents

Description

The present disclosure relates to electronic controllers.

As a molded body for an electronic control device, Patent Literature 1 discloses a molded body having a contact portion that contacts a substrate. Further, the contact portion between the molded body and the substrate is filled with a sealing material. In this molded body, foreign matter is prevented from entering the interior of the molded body from the outside by the sealing material filled in the contact portion.

JP 2017-69096 A

The molded article described in Patent Document 1 is sealed with a sealing material. When a heat-curable sealing material is used in the molded body of Patent Document 1, the gas present inside the molded body expands due to the heat generated when the sealing material is heated. If the amount of expanded gas is large, there is a risk that the gas will permeate the liquid sealing material that has not been completely cured, and the outside and inside of the compact will be connected. When the inside and the outside of the molded body are connected, there is a risk that foreign matter may enter the interior from the outside of the molded body, causing a malfunction in the substrate or the like inside the molded body.

The present disclosure has been made based on this situation, and its object is to provide an electronic control device that can suppress the penetration of a seal material even when a heat-curing seal material is used. to do.

A first aspect of the present disclosure for achieving the object includes a first molded body, a second molded body covering the outer periphery of the first molded body, and an end surface of at least one of the first molded body and the second molded body A thermosetting sealing material arranged on the substrate side for sealing the region sandwiched between the substrate arranged on the side and the outer circumference of the first molded body and the inner circumference of the second molded body, and a thermosetting seal and a plate-like penetration prevention plate arranged in contact with the substrate side of the material, and the penetration prevention plate is arranged at a position covering the entire area when viewed from the substrate side. The second molded body has a cylindrical portion protruding toward the substrate, and the thermosetting sealant is filled in a space formed by the end face of the first molded body, the end face of the second molded body, and the cylindrical portion. There is, and at least a part of the penetration prevention plate enters the inside of the thermosetting sealing material.

In the configuration of the first aspect, the gas that has entered the inside of the thermosetting sealing material from the region reaches the surface of the penetration prevention plate when moving from the inside of the thermosetting sealing material to the substrate side due to buoyancy. The gas that reaches the surface of the penetration prevention plate moves along the surface of the penetration prevention plate. Compared to the structure without the penetration prevention plate, the distance that the gas travels in the thermosetting sealing material is longer due to the surface of the penetration prevention plate. Therefore, in the configuration of the first aspect, it is possible to prevent foreign matter from entering the electronic control device from the outside through the part where the gas penetrates the thermosetting sealing material and the gas penetrates.

1 is a diagram showing the configuration of an electronic control system according to the present disclosure; FIG. 1 is a diagram showing the configuration of an electronic control unit according to a first embodiment of the present disclosure; FIG. FIG. 3 is a view in the direction of arrow III in FIG. 2 showing a penetration prevention plate alone; 1. It is a IV arrow directional view in FIG. FIG. 10 is a diagram showing the movement of gas within the thermosetting sealing material in a structure without a penetration prevention plate; FIG. 10 is a diagram showing the movement of gas within the thermosetting sealing material in the structure provided with the penetration prevention plate; FIG. 7 is a diagram showing the configuration of an electronic control unit according to a second embodiment of the present disclosure; FIG. FIG. 12 is a diagram showing a configuration of an electronic control unit in a modified example of the third embodiment of the present disclosure; FIG. FIG. 11 is a diagram showing the configuration of an electronic control unit according to a third embodiment of the present disclosure; FIG. 12 is a diagram showing a configuration of an electronic control unit in a modified example of the third embodiment of the present disclosure; FIG. Figure 5 shows another embodiment of Figure 4;

A plurality of embodiments of the present disclosure will be described below based on the drawings. Note that redundant description may be omitted by assigning the same reference numerals to corresponding components in each embodiment. When only a part of the configuration is described in each embodiment, the configurations of other embodiments previously described can be applied to the other portions of the configuration. Moreover, not only the combinations of the configurations explicitly specified in the description of each embodiment, but also the configurations of a plurality of embodiments can be partially combined even if they are not specified unless there is a particular problem with the combination. Also, unspecified combinations of configurations described in a plurality of embodiments and modifications are also disclosed by the following description.

(First embodiment)
FIG. 1 shows an example of an electronic control system to which the electronic control device of the present disclosure is applied. Electronic control system 1 disclosed in FIG. The substrate 90 is housed in a space surrounded by the first compact 20 , the second compact 30 and the frame 70 . The substrate 90 is fixed to the substrate fixing portion 31 formed on the frame 70 side of the second molded body 30 by screwing or the like. Basic electronic components such as capacitors and coils are mounted on the substrate 90 . The terminal 80 is electrically connected to the substrate 90 and extends from inside the first molded body 20 .

The above electronic control system is employed, for example, as an ECU that controls a transmission mounted on an automobile.

FIG. 2 shows an electronic control unit in the first embodiment. The electronic control device disclosed in FIG. 2 includes a first molded body 20, a second molded body 30, a substrate 90, a thermosetting sealing material 50, and a penetration prevention plate 60. As shown in FIG. In the above configuration, the second molded body 30 is arranged so as to cover the outer periphery of the first molded body 20 made of resin. Substrate 90 is arranged to face end surfaces 21 and 33 of at least one of first molded body 20 and second molded body 30 . The thermosetting sealing material 50 is arranged on the substrate 90 side with respect to the region 40 sandwiched between the outer periphery of the first molded body 20 and the inner periphery of the second molded body 30 . The penetration prevention plate 60 is arranged so as to be in contact with the substrate 90 side surface of the thermosetting sealing material 50 . Furthermore, the penetration prevention plate 60 is arranged at a position that covers the entire region 40 when viewed from the substrate 90 side.

The first molded body 20 faces the second molded body 30 at part of its outer peripheral surface as shown in FIG. 1, or faces the second molded body 30 at its entire outer peripheral surface as shown in FIG. Such a configuration may be used.

As shown in FIG. 2, the second molded body 30 has a cylindrical portion 32 that protrudes from the end face on the substrate 90 side toward the substrate 90 side. In the configuration of FIG. 1 , a thermosetting sealing material 50 is filled in a filling region formed by the substrate-side end face 21 of the first molded body 20 , the substrate-side end face 33 of the second molded body 30 , and the cylindrical portion 32 . In the above configuration, at least part of the penetration prevention plate 60 is arranged to enter the thermosetting sealing material 50 .

As shown in FIG. 4, it is desirable to form the width 64 of the penetration prevention plate larger than the width 41 of the region when viewed from the substrate 90 side.

As shown in FIG. 4, the region 40 has a rectangular shape when viewed from the substrate 90 side. Like the region 40, the penetration prevention plate 60 also has a rectangular shape when viewed from the substrate 90 side.

As shown in FIG. 2 , the penetration prevention plate 60 has legs 61 that protrude from the surface facing the thermosetting sealing material 50 toward the first molded body 20 . The leg portion 61 is arranged inside the thermosetting sealing material 50 .

3 is a single view of the penetration prevention plate 60 in FIG. 2. FIG. The legs 61 are provided at the corners of the penetration prevention plate 60 as shown in FIG. A plurality of legs 61 are provided, preferably three or more. The tip of the leg portion 61 is in contact with the end surface 33 of the second compact as shown in FIG.

As shown in FIG. 2, region 40 has a shape extending in a direction perpendicular to substrate 90 . Also, the direction in which the region 40 extends is the same as the direction in which the leg portion 61 protrudes. The direction along the contact surface 62 of the penetration prevention plate 60 is perpendicular to the direction in which the region 40 extends.

The cylindrical portion 32 is provided over the entire circumference so as to surround the entire outer periphery of the first molded body 20 when viewed from the substrate 90 side.

As shown in FIG. 2 , the substrate 90 side end surface 32 a of the cylindrical portion 32 is positioned closer to the substrate 90 than the substrate side surface 50 a of the thermosetting sealing material 50 . Further, the thermosetting sealing material 50 fills the space between the tubular portion 32 and the leg portion 61 . Furthermore, the space between the leg portions 61 is also filled with the thermosetting sealing material 50 .

As shown in FIG. 1, the substrate 90 is fixed by screws or the like to a substrate fixing portion 31 projecting toward the frame 70 from the end surface of the cylindrical portion 32 of the second molded body 30 facing the frame 70 . The terminal 80 extends from the inside of the first molded body 20 toward the substrate 90 and is fixed on the substrate 90 by welding or the like. The penetration prevention plate 60 may be provided with a press-fitting hole for press-fitting the terminal 80 , and the penetration prevention plate 60 may be fixed by press-fitting the terminal 80 into the press-fitting hole. The frame 70 is an aluminum frame having an opening, and the opening faces the end faces of the first molded body 20 and the second molded body 30 . The frame 70 is configured such that the end surface of the second molded body 30 facing the frame 70 is joined with a sealing material, and the substrate 90 and the like are accommodated inside the frame 70, the first molded body 20, and the second molded body 30. .

According to the present embodiment described so far, in the electronic control device configured as described above, the penetration prevention plate 60 is arranged so as to be in contact with the thermosetting sealing material 50 on the substrate 90 side, and when viewed from the substrate 90 side, It is arranged so as to cover the entire region 40 . FIG. 5 shows the movement path of the gas entering the sealing material in the above configuration and in the configuration without the penetration prevention plate 60. As shown in FIG.

By the way, due to manufacturing dimensional errors in the first molded body 20 and the second molded body 30 , there are cases where the first molded body 20 and the second molded body 30 contact each other in the region 40 . The area 40 is closed on the substrate 90 side and the opposite side to the point of contact. The closure prevents gas from moving in the region 40 away from the substrate 90 . In the above case, when the thermosetting sealing material 50 is heated and hardened, the gas in the region 40 is heated and expands. Part of the expanded gas penetrates into the thermosetting sealing material 50 due to the pressure during expansion. The gas that has entered the thermosetting sealing material 50 moves toward the substrate 90 with respect to the thermosetting sealing material 50 due to buoyancy as indicated by the arrows in FIG. That is, the gas in the thermosetting sealing material 50 moves upward in the vertical direction due to buoyancy. If the amount of gas that expands due to heating and enters the thermosetting sealing material 50 is large, the gas may reach the substrate 90 side from the inside of the sealing material and penetrate the inside of the thermosetting sealing material 50 .

On the other hand, when the penetration prevention plate 60 is arranged as described above, the penetration prevention plate 60 is arranged so as to cover the region 40 when viewed from the substrate 90 side as shown in FIG. As indicated by arrows in FIG. 6 , the gas that has entered the sealing material due to the pressure of thermal expansion when the thermosetting sealing material 50 is heated moves toward the penetration prevention plate 60 due to buoyancy. Further, the surface of the penetration prevention plate 60 on the side of the first molded body 20 is in contact with the thermosetting sealing material 50 . Therefore, in the above-described configuration, even if a large amount of gas enters the thermosetting sealing material 50 during heating, the gas entering the thermosetting sealing material 50 can reach the substrate 90 before reaching the penetration prevention plate 60 . A contact surface 62 is reached. Furthermore, the gas that has reached the contact surface 62 moves along the contact surface 62 .

Therefore, compared to the configuration without the penetration prevention plate 60 , in the above configuration, the gas that has entered the thermosetting sealing material 50 from the region 40 reaches the surface of the thermosetting sealing material 50 opposite to the first molded body 20 . more distance traveled to reach In the above configuration, the amount of gas required for the gas that has entered the thermosetting sealing material 50 to penetrate through the thermosetting sealing material 50 is greater than in the configuration where the penetration prevention plate 60 is not provided. Therefore, in the above configuration, penetration of the thermosetting sealing material 50 by the gas entering from the region 40 into the thermosetting sealing material 50 can be suppressed. With the above configuration, the thermosetting sealing material 50 can be penetrated, and foreign matter can be prevented from entering the electronic control device through the region 40 from the outside of the electronic control device.

Further, by making the width 64 of the penetration prevention plate larger than the width 41 of the region as shown in FIG. . Further, since the width 64 of the penetration prevention plate is larger than the width 41 of the region, the distance that the gas travels on the penetration prevention plate 60 after reaching the penetration prevention plate 60 becomes longer. Therefore, in the above configuration, penetration of the thermosetting sealing material 50 by gas can be more effectively suppressed.

In the electronic control device of the present embodiment, the thermosetting sealing material 50 heats the filled region formed by the end surface of the first molded body 20 on the substrate 90 side, the end surface of the second molded body 30 on the substrate 90 side, and the tubular portion 32 . A cured sealing material 50 is filled. In the above configuration, as shown in FIG. 2, at least a part of the penetration prevention plate 60 is arranged so as to enter the inside of the thermosetting sealing material 50 . In the above configuration, since the filling region is filled with the thermosetting sealing material 50 , at least a part of the penetration prevention plate 60 can be arranged so as to enter the inside of the thermosetting sealing material 50 .

Since a part of the penetration prevention plate 60 is inserted into the thermosetting sealing material 50, the penetration prevention plate 60 is more intrusive than the structure in which the penetration prevention plate 60 is only in contact with the thermosetting sealing material 50. The contact area between the thermosetting sealing material 50 and the penetration prevention plate 60 is increased by the amount. In the above configuration, the force with which the thermosetting sealing material 50 adheres to the penetration prevention material increases by the amount corresponding to the increase in the contact area. Therefore, in the above configuration, it is possible to prevent the penetration prevention plate 60 from peeling off from the surface of the thermosetting sealing material 50 on the substrate 90 side.

In this embodiment, as shown in FIG. 2 , the penetration prevention plate 60 has legs 61 that protrude from the surface facing the thermosetting sealing material 50 toward the first molded body 20 . The leg portion 61 is arranged inside the thermosetting sealing material 50 . In the above configuration, the contact area of the penetration prevention plate 60 with the thermosetting sealing material 50 is increased by the leg portions 61 , compared to the penetration prevention plate 60 without the leg portions 61 . In the above configuration, the force with which the thermosetting sealing material 50 adheres to the penetration prevention plate 60 increases by the amount of the increase in the area of contact with the thermosetting sealing material 50 by the leg portion 61 . Therefore, in the above configuration, it is possible to prevent the penetration prevention plate 60 from peeling off from the substrate 90 side surface of the sealing material.

In this embodiment, as shown in FIG. 2, the leg portion 61 is arranged so as to contact the first molded body 20 or the second molded body 30 . In the above configuration, the leg portion 61 contacts the first molded body 20 or the second molded body 30, so that even if a force is applied to the penetration prevention plate 60 toward the first molded body 20 side, the penetration prevention plate 60 can be suppressed from moving to the first molded body 20 side.

The direction perpendicular to the thickness direction of the penetration prevention plate 60 is defined as the width direction. In the above configuration, even if a force directed toward the first molded body is applied to one side of the penetration prevention plate 60 in the width direction, the leg portion 61 does not come into contact with the first molded body 20 or the second molded body 30. Therefore, it is possible to suppress the movement of the penetration prevention plate toward the first compact. Therefore, even if a force directed toward the first molded body is applied to one side of the penetration prevention plate 60 in the width direction, the other width direction side of the penetration prevention plate 60 moves toward the substrate, and the thermosetting sealing material 50 It is possible to suppress peeling from.

In the description of the second embodiment and the following, elements having the same reference numerals as those used so far are the same elements as those of the previous embodiments unless otherwise specified. be.

(Second embodiment)
In the electronic control device of the present embodiment, as shown in FIG. 7, a leg portion 61 projecting from the penetration prevention plate 60 toward the first molded body 20 is provided, and the leg portion 61 faces the first molded body 20. provided within the range.

The leg portion 61 has a quadrangular prism shape whose axial direction is the direction from the penetration prevention plate 60 toward the first molded body 20 .

As shown in FIG. 7 , the leg portion 61 is provided at the center of the penetration prevention plate 60 .

In the above configuration, the leg portion 61 is provided closer to the center than the range where the penetration prevention plate 60 faces the region 40 . That is, when the penetration prevention plate 60 is viewed from the substrate side, the leg portion 61 is provided inside the area 40 . When gas intrudes into the thermosetting sealing material 50 from the region 40 and reaches the surface of the penetration prevention plate 60, the location where the gas reaches is outside the penetration prevention plate 60 from the position where the leg portion 61 is provided. Become. Therefore, when the gas that has reached the thermosetting sealing material 50 moves toward the center of the penetration prevention plate 60 , it needs to bypass the outer periphery of the leg portion 61 . In the above configuration, the distance required for the gas to reach the surface of the thermosetting sealing material 50 on the substrate 90 side increases by the amount of bypassing the outer periphery of the leg portion 61 . Therefore, in the above configuration, it is possible to prevent the thermosetting sealing material 50 from being penetrated by gas entering from the region 40 .

(Third embodiment)
In the electronic control device of this embodiment, as shown in FIG. A sloped portion 63 is provided that slopes in a direction to move outward from. The inclined portion 63 is provided at a position covering at least the entire area 40 of the contact surface 62 when viewed from the substrate 90 side.

As shown in FIG. 9 , the inclined portion 63 is provided on the entire contact surface 62 of the penetration prevention plate 60 . The inclined portion 63 has a conical shape whose axial direction is the direction from the penetration prevention plate 60 toward the first molded body 20 .

As shown in FIG. 9 , the penetration prevention plate 60 has legs 61 projecting from the contact surface 62 toward the first molded body 20 or the second molded body 30 .

In the above configuration, the contact surface 62 of the inclined portion 63 is flat in FIG. 9, but the contact surface 62 of the inclined portion 63 may be curved as shown in FIG. In FIG. 10, the inclined portion 63 has a spherical shape protruding from the penetration prevention plate 60 toward the first molded body 20 side.

As shown in FIG. 8 , the penetration prevention plate 60 may be configured without the legs 61 . An inclined portion 63 is provided outside the center of the penetration prevention plate 60 on the surface of the penetration prevention plate 60 on the thermosetting sealing material 50 side. In FIG. 8 , the inclined portion 63 is formed over a range from the center side of the region 40 to the outer edge of the penetration prevention plate 60 when viewed from the substrate 90 side. No inclined portion 63 is formed at the center of the surface of the penetration prevention plate 60 on the side of the thermosetting sealing material 50 , and a flat surface 65 is formed along the same direction as the direction along the surface of the substrate 90 . Also, the inclined portion 63 has a conical shape whose axial direction is the same as the direction perpendicular to the substrate 90 .

The gas entering the thermosetting sealing material 50 from the region 40 moves inside the thermosetting sealing material 50 and reaches the contact surface 62 of the penetration prevention plate 60 . In the above configuration, the inclined portion 63 is provided at a position covering at least the entire region 40 when viewed from the substrate 90 side. That is, the contact surface 62 has an inclined surface in a range facing the region 40 . The gas that has entered the thermosetting sealing material 50 from the region 40 reaches the area of the contact surface 62 of the penetration prevention plate 60 that faces the region 40 , and thus reaches the inclined portion 63 .

The gas that has reached the inclined portion 63 tries to move toward the substrate 90 by buoyancy, but is guided by the inclined portion 63 to move from the center side of the penetration prevention plate 60 to the outside. Therefore, in the above configuration, the seal that has entered the thermosetting sealing material 50 from the region 40 can be promoted by the inclined portion 63 to move outward from the center side of the penetration prevention plate 60 . By guiding the gas that has entered the thermosetting sealing material 50 from the region 40 to the outside of the penetration prevention plate 60, it joins the gas that has entered from the region 40 located on the opposite side across the center of the first molded body 20. can be suppressed.

When the gases entering from the region 40 located on the opposite side across the center of the first molded body 20 merge in the thermosetting sealing material 50, the amount of gas at the confluence portion increases. Therefore, if the confluence occurs, there is a risk that the amount of gas may exceed the amount of gas required to reach the substrate side of the thermosetting sealing material 50 , and the gas may penetrate the thermosetting sealing material 50 . On the other hand, in the configuration of the present embodiment, it is possible to suppress the confluence of the gas in the thermosetting sealing material 50, so that the penetration of the thermosetting sealing material 50 by the gas can be suppressed.

(Other embodiments)
Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments, and the following embodiments are also included in the technical scope of the present disclosure. Various changes can be made within a range that does not deviate.

For example, in FIG. 2, the space formed by the first molded body 20, the second molded body 30, and the cylindrical portion 32 is filled, but if the region 40 is sealed, the space is not filled. It's okay. Further, a configuration in which the cylindrical portion 32 is not provided in the second molded body 30 may be employed.

In FIG. 2, the penetrating plate is provided with the leg portion 61, but the leg portion 61 may be omitted.

Although the legs 61 are provided at the corners of the penetration prevention plate 60 in FIG. 3 , the legs 61 may be provided at other portions of the penetration prevention plate 60 .

In FIG. 2, the leg portion 61 provided on the penetrating plate is configured to abut on the second molded body 30 , but a configuration may be adopted in which the leg portion 61 does not abut on the second molded body 30 . Of course, the configuration may be such that the leg portion 61 does not come into contact with the first molded body 20 .

In FIG. 4, the penetration prevention plate 60 has a rectangular shape similar to the region 40 when viewed from the substrate 90 side. and may have different shapes.

In FIG. 4, the penetration prevention plate 60 has a plate shape with no holes or the like. etc. may be formed.

In FIG. 7, the shape of the leg portion 61 is assumed to be a square column, but other shapes such as a column and a frustum may be used as long as the leg portion 61 is in contact with the first molded body 20 .

In FIG. 4, the penetration prevention plate 60 has a substantially rectangular shape when viewed from the substrate 90 side, but as shown in FIG. Similarly, the first molded body 20 and the second molded body 30 may also have a shape other than a rectangular shape.

In FIG. 1, a part of the first molded body 20 has a shape that protrudes from the hole 34 of the second molded body to the opposite side of the substrate 90. good. Also, the end portion 22 of the first molded body shown in FIG.

Although the configuration in which the penetration prevention plate 60 is press-fitted and fixed to the terminal 80 has been described, the terminal may be bent so as not to contact the penetration prevention plate 60 so as to be in electrical contact with the substrate 90 .

REFERENCE SIGNS LIST 1 electronic control system 20 first molded body 21 end surface of first molded body 22 end portion 30 second molded body 31 substrate fixing Parts 32... Cylindrical part 32a... End face on substrate side 33... End face of second compact 34... Hole 40... Area 41... Width of area 50 ... Thermosetting sealing material 50a ... Substrate side surface 60 ... Penetration prevention plate 61 ... Leg portion 62 ... Contact surface 63 ... Inclined portion 64 ... Penetration Width of prevention plate 65 Flat surface 70 Frame 80 Terminal 90 Substrate

Claims (7)

a first molded body (20) molded from resin;
a second molded body (30) made of resin and shaped to cover the outer circumference of the first molded body;
a substrate (90) arranged on the end surface side of the second molded body;
a thermosetting sealing material (50) disposed on the substrate side with respect to a region (40) sandwiched between the outer periphery of the first molded body and the inner periphery of the second molded body, and sealing the region;
a plate-shaped penetration prevention plate (60) arranged to cover the entire region when viewed from the substrate side and in contact with the substrate side of the thermosetting sealing material ;
The second molded body has a tubular portion (32) protruding toward the substrate,
The thermosetting sealing material has a structure filled in a space formed by the end surface of the first molded body, the end surface of the second molded body, and the cylindrical portion,
The electronic control device , wherein at least part of the penetration prevention plate is embedded inside the thermosetting sealing material . a first molded body (20) molded from resin;
a second molded body (30) made of resin and shaped to cover the outer circumference of the first molded body;
a substrate (90) arranged on the end surface side of the second molded body;
a thermosetting sealing material (50) disposed on the substrate side with respect to a region (40) sandwiched between the outer periphery of the first molded body and the inner periphery of the second molded body, and sealing the region;
a plate-shaped penetration prevention plate (60) arranged to cover the entire region when viewed from the substrate side and in contact with the substrate side of the thermosetting sealing material ;
The penetration prevention plate has a leg (61) protruding toward the first compact,
The electronic controller , wherein the legs are disposed within the thermoset sealant . 3. The electronic control unit according to claim 2, wherein said leg portion is located within a range facing the end face (21) of said first molded body. 4. The electronic control device according to claim 2 or 3, wherein the tip of said leg is in contact with the end face of said first molded body or the end face (33) of said second molded body. The second molded body has a tubular portion (32) protruding toward the substrate,
The thermosetting sealing material has a structure filled in a space formed by the end surface of the first molded body, the end surface of the second molded body, and the cylindrical portion,
The electronic control device according to any one of claims 2 to 4, wherein at least a part of said penetration prevention plate enters inside said thermosetting sealing material. The contact surface (62) of the penetration prevention plate that contacts the thermosetting sealing material has an inclined portion ( 63) is provided,
The electronic control device according to any one of claims 1 to 5, wherein the inclined portion is provided in a range covering at least the entire area of the contact surface when viewed from the substrate side. a first molded body (20) molded from resin;
a second molded body (30) made of resin and shaped to cover the outer circumference of the first molded body;
a substrate (90) arranged on the end surface side of the second molded body;
a thermosetting sealing material (50) disposed on the substrate side with respect to a region (40) sandwiched between the outer periphery of the first molded body and the inner periphery of the second molded body, and sealing the region;
a plate-shaped penetration prevention plate (60) arranged to cover the entire region when viewed from the substrate side and in contact with the substrate side of the thermosetting sealing material ;
The contact surface (62) of the penetration prevention plate that contacts the thermosetting sealing material has an inclined portion ( 63) is provided,
The electronic control device, wherein the inclined portion is provided in a range covering at least the entire area of the contact surface when viewed from the substrate side.

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