JP7080279B2 - How to assemble electronic control device and electronic control device - Google Patents

Description

The present application relates to an electronic control device and a method of assembling the electronic control device.

The present application relates to an electronic control device in which a circuit board is housed in a housing. As electronic control devices, control devices for vehicles have been developed for engines, transmissions, and the like. This electronic control device for a vehicle needs to be waterproof in order to protect the circuit board housed inside the housing. Further, the electronic control device for a vehicle is required to be lightweight in order to improve the fuel efficiency of the vehicle. As a method for reducing the weight, a resin housing is used instead of a metal housing.

In order to house the circuit board inside the waterproof housing, it is necessary to fix the circuit board to the housing. When the electronic control device is a resin housing, for example, the component configuration is as follows. A metal nut (for example, brass, iron, aluminum, etc.) is insert-molded into a resin housing, and the circuit board is fixed to the nut with screws. When insert molding a metal nut, it is necessary to press the metal nut from above and below with a mold and a pin. As a result, in the molded resin housing, the bottom side of the nut is the housing. Will be exposed to the outside of.

In the above configuration, the coefficient of linear expansion differs between the resin portion of the housing and the metal nut. In general, resin has a larger coefficient of linear expansion than metal. When the housing becomes hot due to heat from the engine room, etc., the expansion amount of the resin part is larger than that of the metal nut, and a gap is created at the interface between the resin part and the metal nut. .. If a gap is created at the interface of the metal nut, the waterproof property of the housing is lowered and the circuit board cannot be protected.

As described above, the insert molding method of Patent Document 1 describes the following as a measure against the occurrence of a gap at the interface between the resin and the metal. Prior to injection molding, a thin film layer is formed on the surface of the part of the insert part covered with the thermoplastic resin. This thin film layer mainly consists of a mixture containing chlorosulfonated polyethylene, a cross-linking agent, and a cross-linking accelerator. During injection molding in which the molten resin of the thermoplastic resin is injected, the thin film layer undergoes a cross-linking reaction in the mold using the heat of the heated mold and the molten resin to crosslink the insert parts and the thermoplastic resin. do.

Further, in the metal / resin composite structure according to Patent Document 2, the following describes the joint portion between the metal member and the resin member. By keeping the interval period of the fine uneven surface of the metal member and the maximum permeation length of the permeating liquid into the joint within the optimum range, the joint strength between the metal member and the resin member and the leakage resistance are reduced. It can be suppressed.

Patent Document 1: Japanese Patent Application Laid-Open No. 6057216 Patent Document 2: Japanese Patent Application Laid-Open No. 2019-25868

In Patent Document 1, an organic solvent is applied to form a thin film layer on the surface of the insert component. Therefore, here, the concentration of the rubber composition of the organic solvent is a parameter of the effect of the patent. The film thickness of the thin film layer is also a parameter of the effect of the patent. Further, in Patent Document 2, the interval period of the fine uneven surface of the metal member and the maximum permeation length of the permeating liquid into the joint portion between the metal member and the resin member are parameters of the effect of the patent.

As described above, Patent Document 1 requires an insert component having a thin film layer formed therein, and Patent Document 2 requires an insert component in which the interval period of a fine uneven surface is controlled. Both are special insert parts, which leads to cost increase. Further, in both Patent Document 1 and Patent Document 2, it is necessary that each parameter is within the optimum range in order to obtain the effect of the patent. This incurs an inspection period and inspection costs for its management.

Further, the electronic control device has different environmental conditions (maximum temperature, minimum temperature, etc.) used for each device. Since it is necessary to verify the optimum range of each parameter for each electronic control device, the development period becomes long. Further, when the housing of the electronic control device is made of resin, the rigidity is lower than that of the metal housing having the same shape, so that the housing is greatly deformed when vibration is applied. Since the circuit board is screwed to the housing, deformation of the housing leads to deformation of the circuit board. Therefore, there is a concern that the electronic components for vehicles mounted on the circuit board may fail.

The present application has been made to solve the above-mentioned problems in the electronic control device. That is, in the housing of the electronic control device used in the vehicle, waterproofness around the metal insert parts is ensured and high vibration resistance is ensured without using special insert parts in the resin housing. It is the purpose.

The electronic control device according to the first embodiment of the present application is
A resin base that has a circuit board mounting part and a cover mounting part, and an insert molded part in which a metal coupling part is fixed is formed in the circuit board mounting part.
A circuit board on which electronic components for vehicles are mounted and fixed to the circuit board mounting portion of the resin base, and
It has a cover body and a resin base mounting part, and is provided with a cover that covers electronic parts for vehicles mounted on the circuit board.
The metal coupling component fixed to the insert molding portion is exposed from the bottom surface of the circuit board mounting portion.
In the state of being mounted on the vehicle side component, the insert molded portion formed on the circuit board mounting portion is coated with a sealing material at the bottom , and the resin base is provided with the sealing material on the vehicle side. Adhesively fixed to the parts and
The cover is characterized by having a screw fixing portion for the vehicle-side component .

Further, the electronic control device according to the second embodiment of the present application is
A resin base having a circuit board mounting portion, a cover mounting portion, and a device fixing portion, and an insert molding portion in which a metal coupling component is fixed is formed in the circuit board mounting portion.
A circuit board on which electronic components for vehicles are mounted and fixed to the circuit board mounting portion of the resin base, and
It has a cover main body and a resin base mounting portion, and the cover main body includes a cover that covers electronic components for vehicles mounted on the circuit board.
The device fixing portion of the resin base extends outward from the cover mounting portion.
The metal coupling component fixed to the insert molding portion is exposed from the bottom surface of the circuit board mounting portion.
In the state of being mounted on the vehicle side component, the insert molded portion formed on the circuit board mounting portion is coated with a sealing material at the bottom , and the resin base is provided with the sealing material on the vehicle side. Adhesively fixed to the parts and
The device fixing portion of the resin base is characterized in that it is fixed to the vehicle-side component by a screw .

The electronic control device according to the present application is configured as described above. For this reason, the electronic control device according to the present application ensures high waterproofness around the metal insert component without using a special insert component in the resin housing provided in the electronic control device used in the vehicle. It becomes possible to secure vibration resistance.

It is a perspective view which shows the appearance of the electronic control apparatus which concerns on Embodiment 1 of this application. It is a perspective view which shows the component | component of the electronic control apparatus which concerns on Embodiment 1 of this application. It is sectional drawing which shows the internal structure of the electronic control apparatus which concerns on Embodiment 1 of this application. It is a perspective view which shows the structure of the metal nut which concerns on Embodiment 1 of this application. It is a 1st sectional view for demonstrating the molding method of the insert molding part which concerns on Embodiment 1 of this application. It is a 2nd sectional view for demonstrating the molding method of the insert molding part which concerns on Embodiment 1 of this application. It is a perspective view which shows the appearance of the electronic control apparatus which concerns on Embodiment 2 of this application. It is a perspective view which shows the component part of the electronic control apparatus which concerns on Embodiment 2 of this application. It is sectional drawing which shows the internal structure of the electronic control apparatus which concerns on Embodiment 2 of this application. It is a perspective view which shows the structure of the insert molded part which concerns on Embodiment 2 of this application. It is a 1st sectional view for demonstrating the effect of the attachment part in the electronic control apparatus which concerns on Embodiment 2 of this application. It is a 2nd sectional view for demonstrating the effect of the attachment part in the electronic control apparatus which concerns on Embodiment 2 of this application. It is sectional drawing which shows the internal structure of the electronic control apparatus which concerns on Embodiment 3 of this application. It is a 1st partial cross-sectional view which shows the structure of the electronic control apparatus which concerns on Embodiment 3 of this application. It is a 2nd partial cross-sectional view which shows the structure of the electronic control apparatus which concerns on Embodiment 3 of this application. It is a perspective view which shows the structure of the insert molded part which concerns on Embodiment 3 of this application. It is sectional drawing for demonstrating the effect of the attachment part in the electronic control apparatus which concerns on Embodiment 3 of this application. It is sectional drawing which shows the internal structure of the electronic control apparatus which concerns on Embodiment 4 of this application. It is a 1st partial cross-sectional view which shows the structure of the electronic control apparatus which concerns on Embodiment 4 of this application. It is a 1st perspective view which shows the structure of the insert molded part which concerns on Embodiment 4 of this application. It is a 2nd partial cross-sectional view which shows the structure of the electronic control apparatus which concerns on Embodiment 4 of this application. It is a second perspective view which shows the structure of the insert molded part which concerns on Embodiment 4 of this application. It is a perspective view which shows the appearance of the electronic control apparatus which concerns on Embodiment 5 of this application. It is sectional drawing which shows the internal structure of the electronic control apparatus which concerns on Embodiment 5 of this application. It is a partial cross-sectional view which shows the structure of the electronic control apparatus which concerns on Embodiment 5 of this application. It is sectional drawing which shows the internal structure of the 1st Embodiment in the electronic control apparatus which concerns on Embodiment 5 of this application. It is 1st sectional view in 1st another embodiment for demonstrating the molding method of the insert molding part which concerns on Embodiment 5 of this application. It is a second sectional view in another 1st Example for demonstrating the molding method of the insert molding part which concerns on Embodiment 5 of this application. It is sectional drawing which shows the internal structure of the 2nd Example in the electronic control apparatus which concerns on Embodiment 5 of this application. FIG. 5 is a partial cross-sectional view showing the structure of another second embodiment in the electronic control device according to the fifth embodiment of the present application. FIG. 5 is a partial cross-sectional view showing the structure of another third embodiment of the electronic control device according to the fifth embodiment of the present application. FIG. 5 is a partial cross-sectional view showing the structure of another fourth embodiment in the electronic control device according to the fifth embodiment of the present application. FIG. 5 is a partial cross-sectional view showing the structure of another fifth embodiment in the electronic control device according to the fifth embodiment of the present application. It is 1st sectional view in 5th another embodiment for demonstrating the molding method of the insert molding part which concerns on Embodiment 5 of this application. It is a second sectional view in another 5th Example for demonstrating the molding method of the insert molding part which concerns on Embodiment 5 of this application. It is a perspective view which shows the appearance of the electronic control apparatus which concerns on Embodiment 6 of this application. It is sectional drawing which shows the internal structure of the electronic control apparatus which concerns on Embodiment 6 of this application. It is a partial cross-sectional view which shows the structure of the electronic control apparatus which concerns on Embodiment 6 of this application. FIG. 5 is a partial cross-sectional view showing the structure of another embodiment of the electronic control device according to the sixth embodiment of the present application. It is sectional drawing for demonstrating the assembly method in the electronic control apparatus which concerns on Embodiment 6 of this application. It is a 1st sectional view for demonstrating the effect of the attachment part in the electronic control apparatus which concerns on Embodiment 6 of this application. It is a 2nd sectional view for demonstrating the effect of the attachment part in the electronic control apparatus which concerns on Embodiment 6 of this application.

The electronic control device according to the embodiment of the present application will be described below with reference to the drawings. In each figure, the same or similar components are designated by the same reference numerals, and the sizes and scales of the corresponding components are independent of each other. For example, when illustrating the same component that has not been changed between cross-sectional views in which a part of the structure is changed, the size and scale of the same component may be different. Further, although the electronic control device actually includes a plurality of members, only the parts necessary for the explanation are described and the other parts are omitted for the sake of simplicity.

Embodiment 1.
Hereinafter, embodiments of the present application will be described with reference to the drawings. FIG. 1 is a perspective view showing an overall configuration (electronic control device-mounted vehicle component) of the electronic control device 5 according to the first embodiment of the present application. The electronic control device 5 according to the present embodiment is composed of a resin base 6, a cover 7, a connector 10, a cover fixing screw 12 (first screw), and the like. The resin base 6 is fixed to the vehicle side component 13 (fixed component). A circuit board is mounted inside the electronic control device 5, and signals, electric power, and the like are supplied to the circuit board from the connector 10. The cover 7 is fixed to the resin base 6 by the cover fixing screw 12 (first screw).

The resin base 6 of the electronic control device 5 is fixed to the vehicle-side component 13 with an adhesive (sealing material 18). The vehicle-side component 13 is, for example, a bracket for mounting a control device, a housing of a transmission, or the like. A sealing material 32 is applied to the mating surface and the mating surface of the resin base 6, the connector 10, and the cover 7, so that waterproofness can be ensured. The housing of the electronic control device 5 is composed of a resin base 6 corresponding to the housing on the side where the circuit board is fixed, and a cover 7 corresponding to the housing on the side where the circuit board is not fixed. The resin base 6 is made of resin, and a metal part (first metal coupling part) for fixing the circuit board is insert-molded.

Examples of the material of the resin base 6 include resins such as PPS (polyphenylene sulfide resin), PBT (polybutylene terephthalate resin), PA (polyetheretone resin), and PEEK (polyetheretherketone resin). The cover 7 is a part made of resin, metal press, aluminum die-cast, or the like. The cover fixing screw 12 (first screw) is used to fix the cover 7 and the resin base 6. When assembling the cover 7 to the resin base 6, the sealing material 32 is applied to the resin base 6, the connector 10, the mating surface of the cover 7, and the mating surface in order to ensure waterproofness. After the cover 7 is assembled with the resin base 6, the electronic control device 5 is fixed to the vehicle-side component 13 with an adhesive (sealing material 18).

FIG. 2 is an exploded view showing a component configuration of an electronic control device according to the present embodiment. The housing of the electronic control device 5 is composed of a resin base 6 and a cover 7. The resin base 6 corresponds to the housing on the side where the circuit board 8 is fixed. The cover 7 corresponds to a housing on the side where the circuit board 8 is not fixed. The cover 7 is for mounting the cover main body 7a that covers the vehicle electronic component 30 and the circuit board 8, the resin base mounting portion 7b extending outside the cover main body 7a, and the connector 10. It has an opening 7c provided in. The resin base 6 has a circuit board mounting portion 6a and a cover mounting portion 6b. The circuit board mounting portion 6a of the resin base 6 is formed with an insert molded portion 15 to which a metal component (first metal bonding component) is fixed.

The resin base 6 and the cover 7 are fixed by using the cover fixing screw 12 (first screw) inserted into the resin base mounting portion 7b with the cover mounting portion 6b and the resin base mounting portion 7b combined. Will be done. As a result, the cover mounting portion 6b and the resin base mounting portion 7b face each other. A connector 10 is attached to the opening 7c of the cover 7. The connector 10 is electrically connected to the circuit board 8 on which the vehicle electronic component 30 is mounted. In the figure, the connector 10 faces the horizontal direction of the paper surface, but as another configuration, the resin base 6 has an opening for projecting the connector 10, and the connector 10 faces the vertical direction of the paper surface. Is also good. The circuit board 8 is fixed to the resin base 6 by the substrate fixing screw 11 (second metal coupling component) coupled to the metal component (first metal coupling component).

The resin base 6 is made of resin, and a metal part (first metal coupling part) for fixing the circuit board 8 is insert-molded. When the circuit board 8 is fixed to the resin base 6 with a screw (second metal coupling part), a metal nut 9 is usually used for this metal part (first metal coupling part). .. In addition, when it is fixed to the resin base 6 with a tapping screw, it becomes a hollow cylindrical metal part. When it is fixed to the resin base 6 by snap fit, it is a metal part having a snap fit for matching with the circuit board 8. Hereinafter, the metal nut 9 assuming screw fixing will be described as an example of a metal part (first metal coupling part).

FIG. 3 is a cross-sectional view of the electronic control device 5 according to the present embodiment. A vehicle electronic component 30 is mounted on the circuit board 8. A sealing material 32 is applied to the mating surface and the mating surface of the resin base 6, the connector 10, and the cover 7, so that waterproofness can be ensured. Metal nuts 9 (first metal coupling parts) are insert-molded in a plurality of places on the circuit board mounting portion 6a of the resin base 6. The circuit board 8 is fixed to the resin base 6 in which the metal nut 9 is insert-molded by the board fixing screw 11 (second metal coupling component). An adhesive fixing portion 17 is provided as a mounting portion of the electronic control device 5. In the resin base 6, the bottom of the portion where the metal nut 9 is insert-molded (insert-molded portion 15) is the bottom surface of the resin base 6 (bottom surface 6d of the circuit board mounting portion 6a and the bottom surface 6f of the cover mounting portion 6b). Protruding from.

The adhesive fixing portion 17 corresponds to a joint portion between the protruding portion of the resin base 6 (bottom portion 15a of the insert molding portion 15) and the vehicle side component 13. A sealing material 18 is formed on the adhesive fixing portion 17. The sealing material 18 is a material for adhesive fixing, and uses a material having both adhesiveness and sealing property. For the sealing material 18, for example, a silicone-based adhesive, an epoxy-based adhesive, or the like is suitable. The sealing material 18 before curing is in the form of a gel and is applied to the vehicle side component 13 or the resin base 6, and the resin base 6 of the electronic control device 5 is assembled to the vehicle side component 13. After that, the sealing material 18 is cured. A metal nut 9, which is a metal component, is used to fix the circuit board 8 with the board fixing screw 11. Compared with the other embodiments, the electronic control device 5 according to the first embodiment does not have a device fixing portion by a screw, which will be described later, so that the size can be reduced and the weight can be reduced.

FIG. 4 is an enlarged cross-sectional view for explaining the structure of the insert molded portion 15 to which the metal nut 9 is fixed. The metal nut 9 (first metal coupling part), which is a metal part, is insert-molded on the resin base 6 and fixed to the insert-molded portion 15 of the circuit board mounting portion 6a. The metal nut 9 (first metal coupling part) has a metal nut bottom portion 9b and a metal nut main body portion 9c. A female screw is formed on the metal nut main body 9c of the metal nut 9. The resin portion 3 points to the periphery of the metal nut bottom portion 9b of the metal nut 9.

In the resin base 6, the bottom portion 15a of the insert molding portion 15 projects outward (downward or to the bottom side of the device) from the bottom surface 6d of the circuit board mounting portion 6a and the bottom surface 6f of the cover mounting portion 6b. .. An insert-molded hollow portion 23 is formed in the bottom portion 15a of the insert-molded portion 15 below the metal nut bottom surface 9a of the metal nut 9. When the sealing material 18 is applied to the bottom portion 15a of the insert molding portion 15, the sealing material 18 penetrates into the insert molding hollow portion 23 and fixes the vehicle side component 13 and the resin base 6 (bottom portion 15a of the insert molding portion 15). ..

FIG. 5 is a first cross-sectional view for explaining a method of forming a metal nut 9 (first metal joint part). In order to house the circuit board 8 in the housing, it is necessary to fix the circuit board 8 to the resin base 6. The electronic control device 5 uses a resin housing to insert-mold a metal nut 9 made of metal (for example, brass, iron, aluminum, etc.) into a resin base 6. The circuit board 8 is screwed to the metal nut 9 with the board fixing screw 11. When insert-molding a metal nut 9 in which the bottom surface 9a of the metal nut is closed, the metal nut 9 is pressed from above and below by the upper pin 2a and the lower pin 2b. The figure is a schematic diagram at the time of insert molding. The metal nut 9 is fixedly held in the vertical direction of the paper surface by the lower mold pins (upper pin 2a and lower pin 2b) on the paper surface and the upper molds 33a and 33b on the paper surface. Insert molded.

FIG. 6 is a second cross-sectional view for explaining a method of forming the metal nut 9. After the insert molding portion 15 is completed, the upper pin 2a and the lower pin 2b are removed. A female screw 9d is formed on the metal nut 9, and the metal nut bottom surface 9a is closed. In the resin housing after insert molding, the insert molding hollow portion 23 is formed in the bottom portion 15a of the insert molding portion 15 below the metal nut bottom surface 9a of the metal nut 9. When the sealing material 18 is applied to the bottom portion 15a of the insert molding portion 15, the sealing material 18 penetrates into the insert molding hollow portion 23 and fixes the vehicle side component 13 and the resin base 6. The figure is a schematic view after insert molding. Since the metal nut 9 is fixedly held by the molds 33a and 33b and the mold pins (upper pin 2a and lower pin 2b) during molding, that portion (metal nut bottom surface 9a) is the base. It is not covered by the resin portion 3 and is exposed. The exposed portion of the metal nut to the outside of the housing and its periphery are adhesively fixed to the vehicle side component 13.

The present embodiment has the following merits. When the surrounding temperature becomes high, there is a concern that a gap will be generated at the interface between the metal nut 9 and the resin portion 3 and the waterproof property will be lost. On the other hand, in the electronic control device 5 according to the present embodiment, since the sealing material 18 is provided, even if a gap is generated at the interface between the metal nut 9 and the resin portion 3, the sealing material 18 is waterproof. You can secure sex. The sealing material 18 is adhered to the resin base 6 and the vehicle side component 13, and the sealing material 18 expands and contracts so that the dimensional change due to the difference in linear expansion can be absorbed. In particular, if the sealing material 18 is a silicone-based adhesive, the sealing material 18 becomes rubber-like after curing, so that it can absorb a larger dimensional change.

As described above, the metal nut 9 does not require special specifications such as formation of a thin film layer and control of the interval cycle of the fine uneven surface, and can secure waterproofness at no cost. Further, in the present embodiment, if a sealing material 18 sufficient to cover the bottom portion 15a of the insert molding portion 15 is applied, waterproofness can be ensured. Therefore, the coating amount of the sealing material 18 is a parameter to be controlled. However, it is only necessary to confirm that the coating amount of the sealing material 18 is equal to or more than the required minimum amount, and strict control is not required. As a result, it is not necessary to verify the optimum range of special parameters such as the film thickness of the thin film layer and the interval period of the fine uneven surface, and to manage the special parameters, which makes it possible to shorten the development period and reduce the management cost. ..

In the electronic control device 5 according to the present embodiment, the cover 7 is firmly connected to the resin base 6 by the metal cover fixing screw 12 (first screw). The circuit board 8 on which the electronic component 30 for a vehicle is mounted has a metal nut 9 (first metal coupling component) and a metal substrate fixing screw 11 (second metal coupling component) on a resin base 6. ), It is firmly fixed. The resin base 6 is firmly attached to the vehicle-side component 13 by the adhesive fixing portion 17 coated with the sealing material 18.

Therefore, the electronic control device 5 according to the present embodiment can be attached to the transmission of the vehicle. Among the attachment destinations of the electronic control device 5, the transmission of the vehicle is a place (vehicle-side component) where a large vibration is generated. As described in paragraphs 0047 and 0048, the present application relates to an electronic control device having high vibration resistance, and the electronic control device according to the present embodiment is directly attached to a transmission in which a large vibration is generated. It is particularly effective as an electronic control device for.

Therefore, the electronic control device according to the present embodiment is
A resin base having a circuit board mounting portion and a cover mounting portion, and an insert molded portion in which a first metal coupling component is fixed is formed in the circuit board mounting portion.
A circuit board on which an electronic component for a vehicle is mounted and fixed to a circuit board mounting portion of the resin base by a second metal coupling component coupled with a first metal coupling component of the insert molding portion. ,
It has a cover main body and a resin base mounting portion, and the cover main body includes a cover that covers electronic components for vehicles mounted on the circuit board.
The cover mounting portion of the resin base and the resin base mounting portion of the cover are coated with a sealing material and aligned.
The insert molded portion formed in the circuit board mounting portion is characterized in that the bottom portion protrudes from the bottom surface of the circuit board mounting portion.
Further, the metal coupling component fixed to the insert molded portion is characterized in that it is exposed from the bottom surface of the circuit board mounting portion.
Further, the insert molded portion formed on the circuit board mounting portion has a sealing material coated on the bottom thereof.
Further, it is characterized in that a first screw is inserted into the cover mounting portion and the resin base mounting portion that are aligned with each other.
Further, the bottom portion of the insert molded portion to which the sealing material is adhered is fixed to the transmission.

Embodiment 2.
The electronic control device 5 according to the second embodiment will be described below with reference to the drawings. FIG. 7 is a perspective view showing an overall configuration (electronic control device-mounted vehicle component) of the electronic control device 5 according to the present embodiment. In the present embodiment, the device fixing portion 6c is provided on the resin base 6 with respect to the first embodiment, and the electronic control device mounting screw 14 (second screw) is used for fixing to the vehicle-mounted component. .. The electronic control device 5 is composed of a resin base 6, a cover 7, a connector 10, a cover fixing screw 12 (first screw), an electronic control device mounting screw 14 (second screw), and the like, and is composed of a resin base. 6 is fixed to the vehicle side component 13 (fixed component). A circuit board is mounted inside the electronic control device 5, and signals, electric power, and the like are supplied to the circuit board from the connector 10. The cover 7 is fixed to the resin base 6 by the cover fixing screw 12.

The resin base 6 of the electronic control device 5 is fixed to the vehicle side component 13 by an adhesive (seal material 18) and an electronic control device mounting screw 14 (second screw). The vehicle-side component 13 is, for example, a bracket for mounting a control device, a housing of a transmission, or the like. A sealing material 32 is applied to the mating surface and the mating surface of the resin base 6, the connector 10, and the cover 7, so that waterproofness can be ensured. The housing of the electronic control device 5 is composed of a resin base 6 corresponding to the housing on the side where the circuit board is fixed, and a cover 7 corresponding to the housing on the side where the circuit board is not fixed. The resin base 6 is made of resin, and a metal part (first metal coupling part) for fixing the circuit board is insert-molded. The device fixing portion 6c included in the resin base 6 extends to the outside of the cover mounting portion 6b of the resin base 6.

Examples of the material of the resin base 6 include resins such as PPS (polyphenylene sulfide resin), PBT (polybutylene terephthalate resin), PA (polyetheretone resin), and PEEK (polyetheretherketone resin). The cover 7 is a part made of resin, metal press, aluminum die-cast, or the like. The cover fixing screw 12 (first screw) is used to fix the cover 7 and the resin base 6. When assembling the cover 7 to the resin base 6, a sealing material is applied to the resin base 6, the connector 10, the mating surface of the cover 7, and the mating surface in order to ensure waterproofness. After the cover 7 is assembled with the resin base 6, the resin base 6 of the electronic control device 5 is fixed to the vehicle side component 13 by the adhesive (sealing material 18) and the electronic control device mounting screw 14.

FIG. 8 is an exploded view showing a component configuration of the electronic control device according to the present embodiment. The housing of the electronic control device 5 is composed of a resin base 6 and a cover 7. The resin base 6 corresponds to the housing on the side where the circuit board 8 is fixed. The cover 7 corresponds to a housing on the side where the circuit board 8 is not fixed. The cover 7 is for mounting the cover main body 7a that covers the vehicle electronic component 30 and the circuit board 8, the resin base mounting portion 7b extending outside the cover main body 7a, and the connector 10. It has an opening 7c provided in. The resin base 6 has a circuit board mounting portion 6a, a cover mounting portion 6b, and a device fixing portion 6c.

The circuit board mounting portion 6a of the resin base 6 is formed with an insert molded portion 15 to which a metal component (first metal bonding component) is fixed. The device fixing portion 6c extends outward from the cover mounting portion 6b of the resin base 6, and is fixed to the vehicle side component 13 by the electronic control device mounting screw 14 (second screw). The resin base 6 and the cover 7 are fixed by using the cover fixing screw 12 (first screw) inserted into the resin base mounting portion 7b with the cover mounting portion 6b and the resin base mounting portion 7b combined. Has been done. As a result, the cover mounting portion 6b and the resin base mounting portion 7b face each other. A connector 10 is attached to the opening 7c of the cover 7.

The connector 10 is electrically connected to the circuit board 8 on which the vehicle electronic component 30 is mounted. In the figure, the connector 10 faces the horizontal direction of the paper surface, but as another configuration, the resin base 6 has an opening for projecting the connector 10, and the connector 10 faces the vertical direction of the paper surface. Is also good. The circuit board 8 is fixed to the resin base 6 by the substrate fixing screw 11 (second metal coupling component) coupled to the metal component (first metal coupling component). The resin base 6 is made of resin, and a metal part (first metal coupling part) for fixing the circuit board 8 is insert-molded.

When the circuit board 8 is fixed to the resin base 6 with a screw (second metal coupling part), a metal nut 9 is usually used for this metal part (first metal coupling part). .. In addition, when it is fixed to the resin base 6 with a tapping screw, it becomes a hollow cylindrical metal part. When it is fixed to the resin base 6 by snap fit, it is a metal part having a snap fit for matching with the circuit board 8. Hereinafter, the metal nut 9 assuming screw fixing will be described as an example of a metal part (first metal coupling part).

FIG. 9 is a cross-sectional view of the electronic control device 5 according to the present embodiment. A vehicle electronic component 30 is mounted on the circuit board 8. A sealing material 32 is applied to the mating surface and the mating surface of the resin base 6, the connector 10, and the cover 7, so that waterproofness can be ensured. Metal nuts 9 (first metal coupling parts) are insert-molded in a plurality of places on the circuit board mounting portion 6a of the resin base 6. The circuit board 8 is fixed to the resin base 6 in which the metal nut 9 is insert-molded by the board fixing screw 11 (second metal coupling component). A screw fixing portion 16 and an adhesive fixing portion 17 are provided as mounting portions of the electronic control device 5.

In the resin base 6, the bottom surface 6e of the device fixing portion 6c protrudes from the bottom surface of the resin base 6 (the bottom surface 6d of the circuit board mounting portion 6a and the bottom surface 6f of the cover mounting portion 6b). The screw fixing portion 16 corresponds to a joint portion between the protruding portion of the resin base 6 (bottom surface 6e of the device fixing portion 6c) and the vehicle side component 13. In the figure, the resin base 6 is configured with the screw fixing portion 16, but the cover 7 may be configured with the screw fixing portion 16. The adhesive fixing portion 17 corresponds to a joint portion between the bottom portion 15a of the insert molding portion 15 and the vehicle side component 13. A sealing material 18 is formed on the adhesive fixing portion 17. The sealing material 18 is a material for adhesive fixing, and uses a material having both adhesiveness and sealing property.

For the sealing material 18, for example, a silicone-based adhesive, an epoxy-based adhesive, or the like is suitable. The sealing material 18 before curing is in the form of a gel and is applied to the vehicle side component 13 or the resin base 6, and the resin base 6 of the electronic control device 5 is assembled to the vehicle side component 13 by the electronic control device mounting screw 14. Be done. After that, the sealing material 18 is cured. A metal nut 9, which is a metal component, is used to fix the circuit board 8 with the board fixing screw 11. The size of the electronic control device 5 according to the present embodiment is wider than that of the first embodiment by the amount of the device fixing portion 6c. Although the size is widened, the provision of the screw fixing portion 16 makes it an effective form when the holding force of the electronic control device 5 against vibration cannot be sufficiently secured only by the adhesive fixing portion 17. Therefore, it can be attached to the vehicle side component 13 in a stable state. A through hole 6g is formed in the device fixing portion 6c of the resin base 6, and the electronic control device mounting screw 14 (second screw) attached to the device fixing portion 6c has a screw head 14a as the device. It is arranged on the cover side (upper side of the device fixing portion 6c).

FIG. 10 is an enlarged cross-sectional view for explaining the structure of the insert molded portion 15 to which the metal nut 9 is fixed. The metal nut 9, which is a metal part, is insert-molded into the resin base 6. In the electronic control device 5 according to the present embodiment, the bottom portion 15a of the insert molding portion 15 has substantially the same height as the bottom surface 6d of the circuit board mounting portion 6a, and the metal nut bottom surface 9a of the metal nut 9 is formed. It is exposed from the bottom portion 15a of the insert forming portion 15. The bottom surface 6e of the device fixing portion 6c projects downward (to the bottom side of the device) from the bottom surface 6d of the circuit board mounting portion 6a. A sealing material 18 is applied to the metal nut bottom surface 9a of the metal nut 9 and its periphery.

The present embodiment has the following merits. When the surrounding temperature becomes high, there is a concern that a gap will be generated at the interface between the metal nut 9 and the resin portion 3 and the waterproof property will be lost. On the other hand, in the present embodiment, since the sealing material 18 is provided, even if a gap is generated at the interface between the metal nut 9 and the resin portion 3, the sealing material 18 can ensure waterproofness. The sealing material 18 is adhered to the resin base 6 and the vehicle side component 13, and the sealing material 18 expands and contracts so that the dimensional change due to the difference in linear expansion can be absorbed. In particular, if the sealing material 18 is a silicone-based adhesive, the sealing material 18 becomes rubber-like after curing, so that it can absorb a larger dimensional change.

As described above, the metal nut 9 does not require special specifications such as formation of a thin film layer and control of the interval cycle of the fine uneven surface, and can secure waterproofness at no cost. Further, in the present embodiment, if a sealing material 18 sufficient to cover the metal nut bottom surface 9a of the metal nut 9 is applied, waterproofness can be ensured. Therefore, the coating amount of the sealing material 18 is a parameter to be controlled. However, it is only necessary to confirm that the coating amount of the sealing material 18 is equal to or more than the required minimum amount, and strict control is not required. As a result, it is not necessary to verify the optimum range of special parameters such as the film thickness of the thin film layer and the interval period of the fine uneven surface, and to manage the special parameters, which makes it possible to shorten the development period and reduce the management cost. ..

Next, the effects of the screw fixing portion 16 and the adhesive fixing portion 17 will be described. FIG. 11 shows, as a comparative example, an image of deformation when vibration is applied to the electronic control device 5 when the adhesive fixing portion 17 is invalid. When the adhesive fixing portion 17 is invalid, the resin base 6 is deformed between the left and right screw fixing portions 16 due to vibration (see the deformation line 19 in the figure). Since the circuit board 8 is screwed to the resin base 6, deformation of the resin base 6 leads to deformation of the circuit board 8 (see the deformation line 20 in the figure), and the electronic components of the circuit board 8 for vehicles. Damage is added to the component 30.

FIG. 12 shows an image of deformation when vibration is applied to the electronic control device 5 when the adhesive fixing portion 17 is effective. In the figure, the adhesive fixing portion 17 adheres and fixes the vicinity of the substrate fixing portion of the resin base 6 to the vehicle side component 13. Compared to the state of the comparative example, the pitch between the fixed portions is shorter, and the amount of deformation of the resin base 6 is smaller (see the deformation line 21 in the figure). Therefore, the deformation of the circuit board 8 is smaller than that in the comparative example (see the deformation line 22 in the figure). As a result, the damage to the electronic component 30 for the vehicle is reduced, and the vibration resistance is improved.

Further, according to the present embodiment, there are two types of mounting portions of the electronic control device 5 to the vehicle, a screw fixing portion 16 (electronic control device mounting screw 14) and an adhesive fixing portion 17 (sealing material 18). , The holding force of the electronic control device against vibration can be sufficiently secured, and the number of screw fixing portions 16 may be reduced. As a result, the space constituting the screw fixing portion 16 can be reduced as compared with the case where the adhesive fixing portion 17 is not provided, and the size and weight of the electronic control device 5 can be reduced.

Further, in the present embodiment, since the adhesive fixing portion 17 is adhered to the vehicle side component 13, the contact area with the vehicle side component 13 is larger than that in the case where the adhesive fixing portion 17 is not provided. Therefore, the heat transfer area from the resin base 6 of the electronic control device 5 to the vehicle-side component 13 is expanded, and the heat dissipation effect is large with respect to the heat generated by the circuit board 8. As described above, in the present embodiment, the heat resistance of the electronic control device 5 is improved.

Therefore, the electronic control device according to the present embodiment is
A resin base having a circuit board mounting portion, a cover mounting portion, and a device fixing portion, and an insert molding portion in which a first metal coupling component is fixed is formed in the circuit board mounting portion. ,
A circuit board on which an electronic component for a vehicle is mounted and fixed to a circuit board mounting portion of the resin base by a second metal coupling component coupled with a first metal coupling component of the insert molding portion. ,
It has a cover main body and a resin base mounting portion, and the cover main body includes a cover that covers electronic components for vehicles mounted on the circuit board.
The device fixing portion of the resin base extends outward from the cover mounting portion.
The cover mounting portion of the resin base and the resin base mounting portion of the cover are coated with a sealing material and aligned.
The bottom surface of the device fixing portion is characterized in that it protrudes from the bottom surface of the circuit board mounting portion.
Further, the metal coupling component fixed to the insert molded portion is characterized in that it is exposed from the bottom surface of the circuit board mounting portion.
Further, the first metal joint component fixed to the insert molded portion is characterized in that the bottom portion is closed.
Further, a through hole is formed in the device fixing portion of the resin base.
The second screw attached to the device fixing portion is characterized in that the screw head is arranged on the cover side of the device.

Embodiment 3.
The electronic control device 5 according to the third embodiment will be described with reference to the drawings. The electronic control device 5 according to the present embodiment is characterized by the peripheral shape of the bottom portion 15a of the insert molding portion 15. FIG. 13 is a cross-sectional view showing an overall configuration (electronic control device-mounted vehicle component) of the electronic control device 5 according to the present embodiment. The electronic control device 5 is composed of a resin base 6, a cover 7, a connector 10, a cover fixing screw 12 (first screw), an electronic control device mounting screw 14 (second screw), and the like, and is composed of a resin base. 6 is fixed to the vehicle side component 13 (fixed component). A sealing material 32 is applied to the mating surface and the mating surface of the resin base 6, the connector 10, and the cover 7, so that waterproofness can be ensured. A circuit board 8 is mounted inside the electronic control device 5, and signals, electric power, and the like are supplied to the circuit board 8 from the connector 10.

The cover 7 is fixed to the resin base 6 by the cover fixing screw 12 (first screw). The resin base 6 of the electronic control device 5 is fixed to the vehicle side component 13 by the screw fixing portion 16 (electronic control device mounting screw 14) and the adhesive fixing portion 17 (sealing material 18). A vehicle electronic component 30 is mounted on the circuit board 8. Metal nuts 9 are insert-molded in a plurality of places on the resin base 6. The circuit board 8 is fixed to a resin base 6 in which a metal nut 9 is insert-molded by a board fixing screw 11. In the figure, the resin base 6 is configured with the screw fixing portion 16, but the cover 7 may be configured with the screw fixing portion 16.

A metal nut 9 (first metal coupling component), which is a metal component, is used to fix the circuit board 8 with the substrate fixing screw 11 (second metal coupling component). The sealing material 18 is a material for adhesive fixing, and uses a material having both adhesiveness and sealing property. For the sealing material 18, for example, a silicone-based adhesive, an epoxy-based adhesive, or the like is suitable. The sealing material 18 before curing is in the form of a gel and is applied to the vehicle side component 13 or the resin base 6, and the resin base 6 of the electronic control device 5 is assembled to the vehicle side component 13. After that, the sealing material 18 is cured.

FIG. 14 is an enlarged view for explaining a screw fixing portion 16 (electronic control device mounting screw 14) and an adhesive fixing portion 17 (sealing material 18) of the electronic control device 5 according to the present embodiment. In the resin base 6, the portion where the screw fixing portion 16 is formed (device fixing portion 6c) protrudes from the bottom surface 6d of the circuit board mounting portion 6a. The screw fixing portion 16 corresponds to a joint portion between the protruding portion of the resin base 6 (bottom surface 6e of the device fixing portion 6c) and the vehicle side component 13. A sealing material 18 is formed on the adhesive fixing portion 17. The sealing material 18 penetrates into the insert-molded hollow portion 23 of the resin base formed in the lower part of the metal nut 9. In the electronic control device 5 according to the present embodiment, the screw fixing portion 16 is brought into contact with the vehicle-side component 13, and the adhesive fixing portion 17 is provided with a gap.

FIG. 15 is a partially enlarged view showing the form of the adhesive fixing portion 17. In the figure, in order to make it easier to explain the merits of the present embodiment, the illustration of the sealing material 18 is omitted. There is a gap between the bottom portion 15a of the insert molding portion 15 and the upper surface of the vehicle side component 13. Even if the screw fixing portion 16 and the adhesive fixing portion 17 are designed at the same height with respect to the vehicle side part 13, there are variations in the manufacturing of the parts in the actual parts. As a result, for example, the adhesive fixing portion 17 at one place becomes high, and the adhesive fixing portion may come into contact with the vehicle-side component 13 before the other parts.

FIG. 16 is a perspective view showing the structure of the insert molded portion 15 to which the metal nut 9 is fixed. A gap (d) is provided between the bottom surface 6e of the device fixing portion 6c and the bottom portion 15a of the insert molding portion 15. In the adhesive fixing portion 17, the sealing material 18 is configured to enter the insert-molded hollow portion 23. That is, the insert molded hollow portion 23 is filled with the resin. At the time of assembly, the sealing material 18 may be applied to either the vehicle side component 13 or the resin base 6. When the sealing material 18 is applied to the vehicle-side component 13, since the sealing material 18 is in the form of a gel, the sealing material 18 is naturally applied by pressing and assembling the bottom portion 15a of the insert molded portion 15 of the resin base 6. 18 enters the insert molding hollow portion 23.

The present embodiment has the following merits. The insert-molded hollow portion 23 becomes a seal material pool, and it is possible to prevent the seal material 18 from flowing and spreading until it hardens. Further, in FIG. 9, the adhesive surface between the sealing material 18 and the electronic control device 5 is only in the lateral direction with respect to the paper surface. On the other hand, in the present embodiment (FIG. 13), the inner diameter surface of the insert-molded hollow portion 23 is also the adhesive surface between the sealing material 18 and the resin base 6. As described above, the electronic control device according to the present embodiment has a large adhesive area and can more reliably ensure waterproofness.

Further, according to the present embodiment, the attachment portion of the electronic control device 5 to the vehicle-side component 13 has the following merits depending on the mode of bonding. Even if the screw fixing portion 16 and the adhesive fixing portion 17 are designed at the same height with respect to the vehicle side part 13, there are variations in the manufacturing of the parts in the actual parts. As a result, for example, it is conceivable that the adhesive fixing portion 17 at one place is high and comes into contact with the vehicle side component 13 before the other places. According to this embodiment, it is possible to form a structure in which stress of electronic parts for a vehicle is unlikely to occur when the electronic control device 5 is assembled.

FIG. 17 is a diagram for explaining a concern when the present embodiment has not been achieved. In order to make it easier to explain the merits of the present embodiment, the illustration of the sealing material 18 is omitted. In the adhesive fixing portion 17a on the right side, there is a gap between the vehicle side component 13 and the resin base 6 (bottom portion 15a of the insert molding portion 15), but in the adhesive fixing portion 17b on the left side, there is a gap with the vehicle side component 13. The resin base 6 (bottom 15a of the insert molding portion 15) is in close contact with the resin base 6. When the electronic control device mounting screw 14 (second screw) is tightened in this state, the resin base 6 is deformed and assembled by the clearance (see the deformation line 27 of the resin base 6). Since the circuit board 8 is screwed to the resin base 6, if the resin base 6 is deformed, the circuit board 8 is deformed and the electronic component 30 for a vehicle mounted on the circuit board 8 is damaged (). See deformation line 28 of the resin base 6).

Therefore, as in the present embodiment, if the screw fixing portion 16 is brought into contact with the vehicle side component 13 and the adhesive fixing portion 17 is provided with a clearance, there are the following merits. The adhesive fixing portion 17 has a narrower mounting pitch to the vehicle-side component 13 than the screw fixing portion 16. If the manufacturing variation in the height of the screw fixing portion 16 and the manufacturing variation in the height of the adhesive fixing portion 17 are at the same level, the manufacturing variation in the adhesive fixing portion 17 has a narrower mounting pitch, so that the circuit board 8 is used. It tends to be a factor of deformation.

In the electronic control device 5 according to the present embodiment, the adhesive fixing portion 17 is configured to surely provide a gap with respect to the vehicle side component 13, so that stress of the vehicle electronic component is less likely to occur during assembly. It can be a structure. Further, the adhesive fixing portion 17 can ensure the waterproof property more reliably because the sealing material 18 can exist in the gap by providing the gap with respect to the vehicle side component 13.

Therefore, in the electronic control device according to the present embodiment,
The insert molded portion formed in the circuit board mounting portion is characterized in that the bottom portion has a hollow shape.
Further, the insert molded portion formed in the circuit board mounting portion is characterized in that the bottom portion protrudes from the bottom surface of the circuit board mounting portion.
Further, the device fixing portion included in the resin base is characterized in that the bottom surface protrudes from the bottom portion of the insert molded portion formed on the resin base.
Further, when mounted on the vehicle side component, the device fixing portion is in contact with the vehicle side component, and the bottom portion of the insert molded portion is in contact with the vehicle side component when the sealing material is not applied. It is characterized in that a gap is generated between the two.

Embodiment 4.
The electronic control device 5 according to the fourth embodiment of the present application will be described with reference to the drawings. The electronic control device 5 according to the present embodiment is characterized in the form of a metal nut (first metal coupling component). FIG. 18 is a cross-sectional view showing an overall configuration (electronic control device-mounted vehicle component) of the electronic control device 5 according to the present embodiment. The electronic control device 5 is composed of a resin base 6, a cover 7, a connector 10, a cover fixing screw 12 (first screw), an electronic control device mounting screw 14 (second screw), and the like, and is composed of a resin base. 6 is fixed to the vehicle side component 13 (metal fixing component). A sealing material 32 is applied to the mating surface and the mating surface of the resin base 6, the connector 10, and the cover 7, so that waterproofness can be ensured.

A circuit board 8 is mounted inside the electronic control device 5, and signals, electric power, and the like are supplied to the circuit board 8 from the connector 10. The cover 7 is fixed to the resin base 6 by the cover fixing screw 12 (first screw). The cover 7 may be fixed to the resin base 6 by caulking. The resin base 6 of the electronic control device 5 is fixed to the vehicle side component 13 by the screw fixing portion 16 (electronic control device mounting screw 14) and the adhesive fixing portion 17 (sealing material 18). A vehicle electronic component 30 is mounted on the circuit board 8. Metal nuts 9 are insert-molded in a plurality of places on the resin base 6.

The circuit board 8 is fixed to a resin base 6 in which a metal nut 9 is insert-molded by a board fixing screw 11. In the figure, the resin base 6 is configured with the screw fixing portion 16, but the cover 7 may be configured with the screw fixing portion 16. A metal nut 9, which is a metal component, is used to fix the circuit board 8 with the board fixing screw 11. The bottom of the metal nut 9 penetrates, and the sealing material 18 penetrates to the inside of the metal nut 9.

FIG. 19 is an enlarged view for explaining a screw fixing portion 16 (electronic control device mounting screw 14) and an adhesive fixing portion 17 (sealing material 18) of the electronic control device 5 according to the present embodiment. In the resin base 6, the portion where the screw fixing portion 16 is formed (device fixing portion 6c) protrudes from the bottom surface 6d of the circuit board mounting portion 6a and the bottom surface 6f of the cover mounting portion 6b. The screw fixing portion 16 corresponds to a joint portion between the protruding portion of the resin base 6 (bottom surface 6e of the device fixing portion 6c) and the vehicle side component 13. A sealing material 18 is formed on the adhesive fixing portion 17.

Since the metal nut 9 has a penetrating form, the sealing material 18 penetrates into the hollow shape portion of the metal nut 9. The sealing material 18 is a material for adhesive fixing, and uses a material having both adhesiveness and sealing property. For the sealing material 18, for example, a silicone-based adhesive, an epoxy-based adhesive, or the like is suitable. The sealing material 18 before curing is in the form of a gel and is applied to the vehicle side component 13 or the resin base 6, and the resin base 6 of the electronic control device 5 is assembled to the vehicle side component 13. After that, the sealing material 18 is cured.

FIG. 20 is a perspective view showing the structure of the insert molded portion 15 to which the metal nut 9 is fixed. In the adhesive fixing portion 17, the metal nut 9 (first metal connecting part) has a through shape. The inner diameter of the metal nut can be used as the insert-molded hollow portion 23 for the sealing material reservoir. Even if the metal nut 9 has a penetrating shape, the sealing material 18 can ensure waterproofness. The present embodiment has the following merits.

By penetrating the screw hole (first metal coupling part), the thickness of the bottom surface of the metal nut and the margin of the female screw are not required, and the size of the metal nut 9 can be reduced. As a result, the cost of the metal nut 9 can be reduced and the size of the electronic control device 5 can be reduced. Further, it is more productive to penetrate the screw hole of the metal nut 9 than to stop the screw hole, and the cost of the metal nut 9 can be reduced. Further, by penetrating the metal nut 9, even if shavings are generated when the substrate fixing screw 11 is screwed in, it is discharged to the outside and the screw fastening failure is unlikely to occur.

Next, a modified example related to the present embodiment will be described with reference to the drawings. FIG. 21 is an enlarged view for explaining the screw fixing portion 16 (electronic control device mounting screw 14) and the adhesive fixing portion 17 (sealing material 18) of the electronic control device 5 according to the modification of the present embodiment. .. In the resin base 6, the portion where the screw fixing portion 16 is formed (device fixing portion 6c) protrudes from the bottom surface 6d of the circuit board mounting portion 6a and the bottom surface 6f of the cover mounting portion 6b. The screw fixing portion 16 corresponds to a joint portion between the protruding portion of the resin base 6 (bottom surface 6e of the device fixing portion 6c) and the vehicle side component 13. A sealing material 18 is formed on the adhesive fixing portion 17. Since the metal nut 9 has a penetrating form, the sealing material 18 penetrates into the hollow shape portion of the metal nut 9.

FIG. 22 is a perspective view showing the structure of the insert molded portion 15 to which the metal nut 9 according to the present modification is fixed. In the metal nut 9 having a through shape, the metal nut bottom portion 9b bulges outward from the metal nut main body portion 9c. Due to the bulge of the metal nut bottom 9b, the metal nut 9 is insert-molded in a form reinforced by the resin base 6. Instead of the inner diameter of the metal nut 9, the insert-molded hollow portion 23 made of resin is used for the sealing material reservoir. Even if the metal nut 9 has a penetrating shape, the sealing material 18 can ensure waterproofness.

Therefore, in the electronic control device according to the present embodiment,
The first metal joint component fixed to the insert molded portion is characterized in that it penetrates.
Further, the combined cover mounting portion and the resin base mounting portion are characterized in that they are caulked and fixed.

Embodiment 5.
The electronic control device 5 according to the fifth embodiment will be described with reference to the drawings. In the present embodiment, a manufacturing method is adopted in which the vehicle-side component 13 is partially divided and the electronic control device 5 is assembled to the divided portion of the vehicle-side component. FIG. 23 is a perspective view showing the overall configuration (electronic control device-mounted vehicle parts) of the electronic control device 5 according to the present embodiment. The electronic control device 5 is composed of a resin base 6, a cover 7, a connector 10, a cover fixing screw 12 (first screw), an electronic control device mounting screw 14 (second screw), and the like, and is composed of a resin base. 6 is fixed to the divided portion 29 (metal fixing component) of the vehicle side component 13. A circuit board 8 is mounted inside the electronic control device 5, and signals, electric power, and the like are supplied to the circuit board 8 from the connector 10.

The cover 7 is fixed to the resin base 6 by the cover fixing screw 12 (first screw). The resin base 6 of the electronic control device is fixed to the split portion 29 of the vehicle side component 13 by an adhesive (seal material 18) and an electronic control device mounting screw 14 (second screw). A sealing material 32 is applied to the mating surface and the mating surface of the resin base 6, the connector 10, and the cover 7, so that waterproofness can be ensured. The split portion 29 of the vehicle-side component 13 and the vehicle-side component 13 are fixed by the split portion fixing screw 31. A vehicle electronic component 30 is mounted on the circuit board 8. Metal nuts 9 (first metal joint parts) are insert-molded in a plurality of places on the resin base 6.

The circuit board 8 is fixed to a resin base 6 in which a metal nut 9 (first metal coupling component) is insert-molded by a substrate fixing screw 11 (second metal coupling component). Notches 13a are provided at the four corners of the vehicle-side component 13. In the figure, the resin base 6 is configured with the screw fixing portion 16 (device fixing portion 6c), but the cover 7 may be configured with the screw fixing portion 16. A metal nut 9 (first metal coupling part), which is a metal part, is used to fix the circuit board 8 with the board fixing screw 11. A female screw is formed on the device fixing portion 6c of the resin base 6.

FIG. 24 is a cross-sectional view showing the structure of the electronic control device 5 according to the present embodiment. The resin base 6 of the electronic control device 5 is fixed to the divided portion 29 of the vehicle side component 13 by the screw fixing portion 16 (electronic control device mounting screw 14) and the adhesive fixing portion 17 (sealing material 18). .. A vehicle electronic component 30 is mounted on the circuit board 8. Metal nuts 9 are insert-molded in a plurality of places on the resin base 6. The circuit board 8 is fixed to a resin base 6 in which a metal nut 9 is insert-molded by a board fixing screw 11. A through hole is formed in the split portion 29 of the vehicle-side component 13 at a position where the electronic control device mounting screw 14 and the split portion fixing screw 31 are fastened. A female screw 6h is formed in the device fixing portion 6c of the resin base 6, and the electronic control device mounting screw 14 is inserted and fastened from the lower part of the figure.

FIG. 25 is an enlarged view for explaining the screw fixing portion 16 (electronic control device mounting screw 14) and the adhesive fixing portion 17 (sealing material 18) of the electronic control device 5 according to the present embodiment. In the resin base 6, the portion where the screw fixing portion 16 is formed (device fixing portion 6c) protrudes from the bottom surface 6d of the circuit board mounting portion 6a and the bottom surface 6f of the cover mounting portion 6b. The screw fixing portion 16 corresponds to a joint portion between the protruding portion (device fixing portion 6c) of the resin base 6 and the split portion 29 of the vehicle side component 13. A sealing material 18 is formed on the adhesive fixing portion 17.

A female screw 6h is formed on the device fixing portion 6c of the resin base 6, and the electronic control device mounting screw 14 (second screw) attached to the device fixing portion 6c has a screw head 14a at the bottom of the device. It is arranged on the side (bottom side of the resin base 6). When the electronic control device mounting screw 14 is fastened, the bottom surface 6e of the device fixing portion 6c and the split portion 29 of the vehicle side component 13 come into contact with each other. Notches 13a are provided at the four corners of the vehicle-side component 13, so that the screw head 14a of the electronic control device mounting screw 14 can be prevented from colliding with the vehicle-side component 13.

An insert-molded hollow portion 23 is formed below the metal nut bottom surface 9a of the metal nut 9, and the sealing material 18 penetrates into the insert-molded hollow portion 23. The sealing material 18 is a material for adhesive fixing, and uses a material having both adhesiveness and sealing property. For the sealing material 18, for example, a silicone-based adhesive, an epoxy-based adhesive, or the like is suitable. The sealing material 18 before curing is in the form of a gel and is applied to the divided portion 29 of the vehicle side component 13 or the resin base 6, and the resin base 6 of the electronic control device 5 is applied to the divided portion 29 of the vehicle side component 13. Can be assembled. The electronic control device mounting screw 14 is inserted into the split portion 29 of the vehicle side component 13 from below. After that, the sealing material 18 is cured.

That is, in the electronic control device according to the present embodiment, a female screw is formed in the device fixing portion of the resin base, and the second screw attached to the device fixing portion is a screw. It is characterized in that the head is located on the bottom side of the device. The present embodiment has the following merits. Since the vehicle-side component 13 such as a transmission is large in size and weight, when the resin base 6 of the electronic control device 5 is attached, the assembly equipment is restricted particularly with respect to the adhesive fixing portion 17. On the other hand, by dividing the vehicle-side component 13, the size and weight can be reduced, the degree of freedom of the assembly equipment can be increased, and the assembly process can be made more productive.

FIG. 26 is a cross-sectional view showing the structure of the electronic control device 5 according to another first embodiment in the present embodiment. The resin base 6 of the electronic control device 5 has a plate-shaped fixing component (vehicle side) of the vehicle side component 13 by the screw fixing portion 16 (electronic control device mounting screw 14) and the adhesive fixing portion 17 (sealing material 18). It is fixed to the divided portion 29) of the component 13. A vehicle electronic component 30 is mounted on the circuit board 8. Metal nuts 9 are insert-molded in a plurality of places on the resin base 6. The circuit board 8 is fixed to a resin base 6 in which a metal nut 9 is insert-molded by a board fixing screw 11. A through hole is formed in the split portion 29 of the vehicle-side component 13 at a position where the electronic control device mounting screw 14 and the split portion fixing screw 31 are fastened. A female screw 6h is formed in the device fixing portion 6c of the resin base 6, and the electronic control device mounting screw 14 is inserted and fastened from the lower part of the figure. In this embodiment, the bottom surface 6d of the circuit board mounting portion 6a, the metal nut bottom surface 9a (bottom portion 15a of the insert molding portion 15), the bottom surface 6f of the cover mounting portion 6b, and the bottom surface 6e of the device fixing portion 6c are formed. They are aligned at the same height.

FIG. 27 is a first cross-sectional view for explaining a method of forming a metal nut 9 (first metal joint part) according to another first embodiment in the present embodiment. In order to house the circuit board 8 in the housing, it is necessary to fix the circuit board 8 to the resin base 6. The electronic control device 5 uses a resin housing to insert-mold a metal nut 9 made of metal (for example, brass, iron, aluminum, etc.) into a resin base 6. The circuit board 8 is screwed to the metal nut 9 with the board fixing screw 11. When insert-molding a metal nut 9 in which the bottom surface 9a of the metal nut is closed, the metal nut 9 is pressed from above and below by the upper pin 2a and the lower pin 2b. The figure is a schematic diagram at the time of insert molding. The metal nut 9 is positioned by the pins of the mold (upper pin 2a and lower pin 2b), and is fixedly held and held in the vertical direction of the paper surface by the upper and lower molds 33a and 33b of the paper surface, and is insert-molded. ..

FIG. 28 is a second cross-sectional view for explaining a method of forming a metal nut 9 according to another first embodiment in the present embodiment. After the insert molding portion 15 is completed, the upper pin 2a and the lower pin 2b are removed. A female screw 9d is formed on the metal nut 9, and the metal nut bottom surface 9a is closed. The figure is a schematic view after insert molding. Since the metal nut 9 is fixedly held by the molds 33a and 33b at the time of molding, the portion (metal nut bottom surface 9a) is not covered by the resin portion 3 of the base and is exposed. The exposed portion of the metal nut to the outside of the housing and its periphery are adhesively fixed to the vehicle side component 13.

FIG. 29 is a cross-sectional view showing the structure of the electronic control device 5 according to another second embodiment in the present embodiment. In this embodiment, the resin base 6 of the electronic control device 5 includes the circuit board mounting portion 6a and the cover mounting portion 6b, but does not include the device fixing portion 6c (see the first embodiment). In this embodiment, the bottom surface 6d of the circuit board mounting portion 6a, the metal nut bottom surface 9a (bottom portion 15a of the insert molding portion 15), and the bottom surface 6f of the cover mounting portion 6b are aligned at the same height. The resin base 6 of the electronic control device 5 is fixed to the divided portion 29 of the vehicle-side component 13 by the adhesive fixing portion 17 (sealing material 18). The split portion 29 of the vehicle side component 13 is fixed to the vehicle side component 13 by the split portion fixing screw 31. A vehicle electronic component 30 is mounted on the circuit board 8. Metal nuts 9 are insert-molded in a plurality of places on the resin base 6. The circuit board 8 is fixed to a resin base 6 in which a metal nut 9 is insert-molded by a board fixing screw 11. A through hole is formed in the split portion 29 of the vehicle-side component 13 at a position where the split portion fixing screw 31 is fastened.

FIG. 30 is a cross-sectional view showing the structure of the electronic control device 5 according to another second embodiment, and is an enlarged view showing the vicinity of the adhesive fixing portion 17. When the temperature of the electronic control device 5 becomes high, there is a concern that a gap may be generated at the interface 40 between the metal nut 9 and the resin portion 3 of the resin base indicated by the dotted line, and the waterproof property may be deteriorated. .. On the other hand, in the present embodiment, in the adhesive fixing portion 17, the resin base 6 and the facing surface of the divided portion 29 of the vehicle side component 13 are adhered to each other without a gap by the sealing material 18. Even if a gap is generated at the interface 40 between the metal nut 9 and the resin portion 3 of the resin base, waterproofness can be ensured. The sealing material 18 is adhered to the resin base 6 and the divided portion 29 of the vehicle side component 13, and the sealing material 18 expands and contracts to absorb the dimensional change due to the difference in linear expansion.

In particular, if the sealing material 18 is a silicone-based adhesive, it becomes rubbery after curing, so that it can absorb a larger dimensional change. As described above, the metal nut 9 does not require special specifications such as formation of a thin film layer and control of the interval cycle of the fine uneven surface, and can secure waterproofness at no cost. Further, in the present embodiment, if sufficient sealing material 18 is applied to cover the exposed portion of the metal nut, waterproofness can be ensured. Therefore, the coating amount of the sealing material 18 is a parameter to be controlled. It is only necessary to confirm that the coating amount of the sealing material 18 is equal to or more than the required minimum amount, and strict control is not required. As described above, it is not necessary to verify the optimum range of special parameters such as the film thickness of the thin film layer and the interval period of the fine uneven surface, and to manage the special parameters, so that the development period can be shortened and the management cost can be reduced.

FIG. 31 is a cross-sectional view showing the structure of the electronic control device 5 according to another third embodiment of the present embodiment. The resin base 6 of the electronic control device 5 is fixed to the divided portion 29 of the vehicle side component 13 by the screw fixing portion 16 (electronic control device mounting screw 14) and the adhesive fixing portion 17 (sealing material 18). .. An insert-molded hollow portion 23 is formed between the metal nut bottom portion 9b and the split portion 29 of the vehicle-side component 13. A vehicle electronic component 30 is mounted on the circuit board 8. The bottom portion 15a of the insert molding portion 15 protrudes from the bottom surface 6d of the circuit board mounting portion 6a and the bottom surface 6f of the cover mounting portion 6b. In this embodiment, the sealing material 18 is configured to enter the insert-molded hollow portion 23 in the adhesive fixing portion 17. That is, the insert molded hollow portion 23 is filled with the resin.

At the time of assembly, the sealing material 18 may be applied to either the divided portion 29 of the vehicle-side component 13 or the resin base 6. When the sealing material 18 is applied to the divided portion 29 of the vehicle side component 13, since the sealing material 18 is in the form of a gel, the bottom portion 15a of the insert molding portion 15 of the resin base 6 is pressed against and assembled to be natural. The sealing material 18 enters the insert-molded hollow portion 23. The present embodiment has the following merits. The insert-molded hollow portion 23 becomes a seal material pool, and it is possible to prevent the seal material 18 from flowing and spreading until it hardens. In the present embodiment, the inner diameter surface of the insert-molded hollow portion 23 is also an adhesive surface between the sealing material 18 and the resin base 6. As described above, the electronic control device according to the present embodiment has a large adhesive area and can more reliably ensure waterproofness.

FIG. 32 is a cross-sectional view showing the structure of the electronic control device 5 according to another fourth embodiment in the present embodiment. The resin base 6 of the electronic control device 5 is fixed to the divided portion 29 of the vehicle side component 13 by the screw fixing portion 16 (electronic control device mounting screw 14) and the adhesive fixing portion 17 (sealing material 18). .. An insert-molded hollow portion 23 is formed between the metal nut bottom portion 9b and the split portion 29 of the vehicle-side component 13. A vehicle electronic component 30 is mounted on the circuit board 8. The bottom portion 15a of the insert molding portion 15 is aligned at the same height as the bottom surface 6f of the cover mounting portion 6b, but protrudes from the bottom surface 6d of the circuit board mounting portion 6a. In this embodiment, the sealing material 18 is configured to enter the insert-molded hollow portion 23 in the adhesive fixing portion 17. That is, the insert molded hollow portion 23 is filled with the resin. Needless to say, even if the bottom surface 6f of the cover mounting portion 6b and the bottom surface 6d of the circuit board mounting portion 6a are aligned at the same height, the same effect can be obtained.

FIG. 33 is a cross-sectional view showing the structure of the electronic control device 5 according to another fifth embodiment of the present embodiment. The resin base 6 of the electronic control device 5 is fixed to the divided portion 29 of the vehicle side component 13 by the screw fixing portion 16 (electronic control device mounting screw 14) and the adhesive fixing portion 17 (sealing material 18). .. The metal nut 9 has a through shape. A vehicle electronic component 30 is mounted on the circuit board 8. A hollow shape portion is formed between the metal nut bottom portion 9b and the divided portion 29 of the vehicle side component 13. The bottom portion 15a (bottom surface of the metal nut) of the insert molding portion 15 is aligned with the bottom surface 6f of the cover mounting portion 6b and the bottom surface 6d of the circuit board mounting portion 6a at the same height. In this embodiment, the sealing material 18 is configured to enter the hollow shape portion of the metal nut 9 in the adhesive fixing portion 17. That is, the hollow shape portion is filled with the resin (sealing material 18).

In the adhesive fixing portion 17, the metal nut 9 (first metal connecting part) has a through shape. The inner diameter of the metal nut can be used as the insert-molded hollow portion 23 for the sealing material reservoir. Even if the metal nut 9 has a penetrating shape, the sealing material 18 can ensure waterproofness. The present embodiment has the following merits. By penetrating the screw hole (first metal coupling part), the thickness of the bottom surface of the metal nut and the margin of the female screw are not required, and the size of the metal nut 9 can be reduced. As a result, the cost of the metal nut 9 can be reduced and the size of the electronic control device 5 can be reduced. Further, it is more productive to penetrate the screw hole of the metal nut 9 than to stop the screw hole, and the cost of the metal nut 9 can be reduced. Further, by penetrating the metal nut 9, even if shavings are generated when the substrate fixing screw 11 is screwed in, it is discharged to the outside and the screw fastening failure is unlikely to occur.

FIG. 34 is a first cross-sectional view for explaining a method of forming a metal nut 9 (first metal joint part) according to another fifth embodiment in the present embodiment. In order to house the circuit board 8 in the housing, it is necessary to fix the circuit board 8 to the resin base 6. The electronic control device 5 uses a resin housing to insert-mold a metal nut 9 made of metal (for example, brass, iron, aluminum, etc.) into a resin base 6. The circuit board 8 is screwed to the metal nut 9 with the board fixing screw 11. When insert-molding a metal nut 9 having an open metal nut bottom surface 9a, the metal nut 9 is pressed from above with an upper pin 2a. The figure is a schematic diagram at the time of insert molding. The metal nut 9 is fixedly held in the vertical direction of the paper surface by the dies 33a and 33b above and below the paper surface, and is insert-molded.

FIG. 35 is a second sectional view for explaining a method of forming a metal nut 9 according to another fifth embodiment in the present embodiment. After the insert molding portion 15 is completed, the upper pin 2a is removed. A female screw 9d is formed on the metal nut 9, and the metal nut bottom surface 9a is open. When the sealing material 18 is applied to the bottom portion 15a of the insert molding portion 15, the sealing material 18 penetrates into the hollow shape portion of the metal nut 9 and fixes the divided portion 29 of the vehicle side component 13 and the resin base 6. .. The figure is a schematic view after insert molding. Since the metal nut 9 is fixedly held by the molds 33a and 33b at the time of molding, the portion (metal nut bottom surface 9a) is not covered by the resin portion 3 of the resin base and is exposed. The exposed portion of the metal nut to the outside of the housing and its periphery are adhesively fixed to the split portion 29 of the vehicle side component 13.

Embodiment 6.
The electronic control device 5 according to the sixth embodiment will be described with reference to the drawings. Also in this embodiment, a manufacturing method is adopted in which the vehicle-side component 13 is partially divided and the electronic control device 5 is assembled to the divided portion of the vehicle-side component. FIG. 36 is a perspective view showing an overall configuration (electronic control device-mounted vehicle component) of the electronic control device 5 according to the present embodiment. The electronic control device 5 is composed of a resin base 6, a cover 7, a connector 10, a cover fixing screw 12 (first screw), an electronic control device mounting screw 14 (second screw), and the like, and is composed of a resin base. 6 is fixed to the divided portion 29 (fixed component) of the vehicle side component 13. A circuit board 8 is mounted inside the electronic control device 5, and signals, electric power, and the like are supplied to the circuit board 8 from the connector 10.

The cover 7 is fixed to the resin base 6 by the cover fixing screw 12 (first screw). The resin base 6 of the electronic control device is fixed to the split portion 29 of the vehicle side component 13 by an adhesive (seal material 18) and an electronic control device mounting screw 14 (second screw). A sealing material 32 is applied to the mating surface and the mating surface of the resin base 6, the connector 10, and the cover 7, so that waterproofness can be ensured. The split portion 29 of the vehicle-side component 13 and the vehicle-side component 13 are fixed by the split portion fixing screw 31. A vehicle electronic component 30 is mounted on the circuit board 8. Metal nuts 9 (first metal joint parts) are insert-molded in a plurality of places on the resin base 6.

The circuit board 8 is fixed to a resin base 6 in which a metal nut 9 (first metal coupling component) is insert-molded by a substrate fixing screw 11 (second metal coupling component). Notches 13a are provided at the four corners of the vehicle-side component 13. In the figure, the resin base 6 is configured with the screw fixing portion 16 (device fixing portion 6c), but the cover 7 may be configured with the screw fixing portion 16. A metal nut 9 (first metal coupling part), which is a metal part, is used to fix the circuit board 8 with the board fixing screw 11. A through hole is formed in the device fixing portion 6c of the resin base 6.

FIG. 37 is a cross-sectional view showing the structure of the electronic control device 5 according to the present embodiment. The resin base 6 of the electronic control device 5 is fixed to the divided portion 29 of the vehicle side component 13 by the screw fixing portion 16 (electronic control device mounting screw 14) and the adhesive fixing portion 17 (sealing material 18). .. A vehicle electronic component 30 is mounted on the circuit board 8. Metal nuts 9 are insert-molded in a plurality of places on the resin base 6. The circuit board 8 is fixed to a resin base 6 in which a metal nut 9 is insert-molded by a board fixing screw 11. A screw hole is formed in a place where the electronic control device mounting screw 14 is fastened in the split portion 29 of the vehicle side component 13, and a through hole is formed in a place where the split portion fixing screw 31 is fastened. .. A through hole is formed in the device fixing portion 6c of the resin base 6, and the electronic control device mounting screw 14 is inserted and fastened from above in the figure.

FIG. 38 is an enlarged view for explaining the screw fixing portion 16 (electronic control device mounting screw 14) and the adhesive fixing portion 17 (sealing material 18) of the electronic control device 5 according to the present embodiment. In the resin base 6, the bottom portion 15a of the insert molding portion 15, the bottom surface 6e of the device fixing portion 6c, the bottom surface 6d of the circuit board mounting portion 6a, and the bottom surface 6f of the cover mounting portion 6b are aligned at the same height. A sealing material 18 is formed on the adhesive fixing portion 17. A female screw 6h is formed in the split portion 29 of the vehicle side component 13, and the electronic control device mounting screw 14 (second screw) attached to the device fixing portion 6c has the screw head 14a on the upper side of the device (the second screw). It is located on the upper side of the resin base 6). When the electronic control device mounting screw 14 is fastened, the bottom surface 6e of the device fixing portion 6c and the split portion 29 of the vehicle side component 13 come into contact with each other.

Notches 13a are provided at the four corners of the vehicle-side component 13, so that the threaded portion of the electronic control device mounting screw 14 can be prevented from colliding with the vehicle-side component 13. The sealing material 18 before curing is in the form of a gel and is applied to the divided portion 29 of the vehicle side component 13 or the resin base 6, and the resin base 6 of the electronic control device 5 is applied to the divided portion 29 of the vehicle side component 13. Can be assembled. The electronic control device mounting screw 14 is inserted into the split portion 29 of the vehicle side component 13 from above. After that, the sealing material 18 is cured. The present embodiment has the following merits. Since the vehicle-side component 13 such as a transmission is large in size and weight, when the resin base 6 of the electronic control device 5 is attached, the assembly equipment is restricted particularly with respect to the adhesive fixing portion 17. On the other hand, by dividing the vehicle-side component 13, the size and weight can be reduced, the degree of freedom of the assembly equipment can be increased, and the assembly process can be made more productive.

FIG. 39 is an enlargement for explaining the screw fixing portion 16 (electronic control device mounting screw 14) and the adhesive fixing portion 17 (sealing material 18) of the electronic control device 5 according to another embodiment in the present embodiment. It is a figure. There is a step between the cover mounting portion 6b and the device fixing portion 6c. In the resin base 6, the bottom portion 15a of the insert molding portion 15, the bottom surface 6d of the circuit board mounting portion 6a, and the bottom surface 6f of the cover mounting portion 6b are aligned at the same height. The device fixing portion 6c is thinner than the cover mounting portion 6b, and the bottom surface 6e of the device fixing portion 6c is recessed toward the cover side. A gap is provided between the bottom portion 15a of the insert molding portion 15 and the split portion 29 of the vehicle-side component 13. A sealing material 18 is formed on the adhesive fixing portion 17. A female screw 6h is formed in the split portion 29 of the vehicle side component 13, and the electronic control device mounting screw 14 (second screw) attached to the device fixing portion 6c has the screw head 14a on the upper side of the device (the second screw). It is located on the upper side of the resin base 6).

FIG. 40 shows a process of attaching the electronic control device 5 according to the present embodiment to the vehicle-side component 13. The sealing material 18 before curing is in the form of a gel and is applied to the divided portion 29 of the vehicle side component 13. After that, the split portion 29 of the vehicle-side component 13 to which the electronic control device 5 is mounted by the electronic control device mounting screw 14 is assembled to the vehicle-side component 13 by the split portion fixing screw 31. After that, the sealing material 18 is cured. In the figure, the sealing material 18 is applied to the divided portion 29 of the vehicle side component 13, but it may be applied to the electronic control device 5. The adhesive fixing portion 17 is an exposed portion of the metal nut of the resin base 6 and its periphery. As the material for adhesive fixing (seal material 18), a material having both adhesiveness and sealing property is used. For example, there are silicone-based adhesives and epoxy-based adhesives. The thickness of the sealing material 18 is as thin as several μm to several hundred μm.

Next, the effects of the screw fixing portion 16 and the adhesive fixing portion 17 in the electronic control device 5 according to the present embodiment will be described. FIG. 41 shows, as a comparative example, an image of deformation when vibration is applied to the electronic control device 5 when the adhesive fixing portion 17 is invalid. When the adhesive fixing portion 17 is invalid, the resin base 6 is deformed between the left and right screw fixing portions 16 due to vibration (see the deformation line 19a in the figure). Since the circuit board 8 is screwed to the resin base 6, deformation of the resin base 6 leads to deformation of the circuit board 8 (see the deformation line 20a in the figure), and the electronic components of the circuit board 8 for vehicles. Damage is added to the component 30.

FIG. 42 shows an image of deformation when vibration is applied to the electronic control device 5 when the adhesive fixing portion 17 is effective. In the figure, the adhesive fixing portion 17 adheres and fixes the vicinity of the substrate fixing portion of the resin base 6 to the vehicle side component 13. Compared to the state of the comparative example, the pitch between the fixed portions is shorter, and the amount of deformation of the resin base 6 is smaller (see the deformation line 21a in the figure). Therefore, the deformation of the circuit board 8 is smaller than that in the comparative example (see the deformation line 22a in the figure). As a result, the damage to the electronic component 30 for the vehicle is reduced, and the vibration resistance is improved.

Further, in the present embodiment, since the electronic control device 5 has two types of attachment portions to the vehicle, the screw fixing portion 16 and the adhesive fixing portion 17, it is possible to sufficiently secure the holding force of the electronic control device against vibration. There is a possibility that the number of screw fixing portions 16 can be reduced as compared with the case where the adhesive fixing portion 17 is not provided (comparative example). As a result, the space for forming the screw fixing portion 16 can be reduced, and the size and weight of the electronic control device 5 can be reduced as compared with the case where the adhesive fixing portion 17 is not provided. Further, in the present embodiment, since the adhesive fixing portion 17 is adhered to the divided portion 29 of the vehicle side component 13, the area in close contact with the vehicle side component 13 is larger than that in the case where the adhesive fixing portion 17 is not provided. .. Therefore, the heat transfer area from the electronic control device 5 to the vehicle-side component 13 is expanded, and the heat dissipation effect is increased with respect to the heat generated by the circuit board 8. As described above, in the present embodiment, the heat resistance of the electronic control device 5 is improved. Needless to say, the above effect is effective even when the vehicle-side component 13 is attached to the vehicle-side component 13 without using the divided portion 29 of the vehicle-side component 13.

Therefore, the electronic control device according to the embodiment of the present application has a circuit board mounting portion and a cover mounting portion, and the circuit board mounting portion includes a resin base in which metal parts are insert-molded.
A circuit board on which electronic components for vehicles are mounted and fixed to the circuit board mounting part of the resin base,
With a cover that covers the circuit board,
The outer part of the housing of the metal parts insert-molded into the resin base is exposed to the outside of the housing.
The housing is configured with an adhesive fixing part to attach to vehicle-side parts.
The adhesive fixing portion is characterized in that the metal component insert-molded into the resin base is adhered to the vehicle-side component by a sealing material in a range covering the exposed portion to the outside of the housing. Is.

Therefore, another form of the electronic control device according to the embodiment of the present application has a circuit board mounting portion and a cover mounting portion, and the circuit board mounting portion is made of resin in which metal parts are insert-molded. With the base
A circuit board on which electronic components for vehicles are mounted and fixed to the circuit board mounting part of the resin base,
With a cover that covers the circuit board,
The outer part of the housing of the metal parts insert-molded into the resin base is exposed to the outside of the housing.
The housing consists of an adhesive fixing part and a screw fixing part to attach to the vehicle side parts.
The adhesive fixing part is adhered to the vehicle side part by a sealing material in a range covering the exposed part of the metal part insert-molded on the resin base to the outside of the housing.
The screw fixing portion is characterized in that it extends to the outside of the adhesive fixing portion and is configured on a cover or a resin base.

Further, the electronic control device according to the embodiment of the present application is an electronic control device for a vehicle, the housing on the side where the circuit board is fixed is made of resin, and a metal component for fixing the circuit board is inserted. The outside of the housing of the molded and insert-molded metal parts is exposed to the outside of the housing, and the housing comprises a mounting portion for the vehicle-side parts, and the vehicle-side parts. The attachment portion to the housing includes, for example, a screw fixing portion and an adhesive fixing portion, and the adhesive fixing portion covers the housing of the electronic control device and the vehicle side in a range covering the protruding portion of the metal part to the outside of the housing. It is characterized in that the parts are bonded by a sealing material.

Further, another form of the electronic control device is characterized in that the vicinity of the protruding portion of the metal part to the outside of the housing has a hollow shape, and the sealing material is accumulated inside the hollow shape. Is to be. Further, another form of the electronic control device is characterized in that the metal part has a through shape. Further, in another form of the electronic control device, the screw fixing portion is in contact with the vehicle side component when it is attached to the vehicle side component, and the adhesive fixing portion is a vehicle side component when there is no sealing material. It is characterized by having a gap. Further, another form of the electronic control device is characterized in that the attachment portion to the vehicle side component is only an adhesive fixing portion and no screw fixing portion. Further, another form of the electronic control device is characterized in that the vehicle-side component is a housing of a transmission.

Further, the method of assembling the electronic control device according to the embodiment of the present application is a method of assembling the electronic control device for a vehicle, because the housing on the side where the circuit board is fixed is made of resin and the circuit board is fixed. The metal parts of the above are insert-molded, and the outside of the case of the insert-molded metal parts is exposed to the outside of the case. The attachment portion to the vehicle side component includes, for example, a screw fixing portion and an adhesive fixing portion, and the adhesive fixing portion covers the protruding portion of the metal part to the outside of the housing of the electronic control device. When assembling the above-mentioned electronic control device with respect to the electronic control device, which is characterized in that the housing and the vehicle-side parts are bonded by a sealing material, the vehicle-side parts are divided and divided. It is characterized in that a housing of an electronic control device is attached to a portion.

Further, the method of assembling the electronic control device according to the embodiment of the present application includes a circuit board mounting portion and a cover mounting portion, and the circuit board mounting portion is made of resin in which metal parts are insert-molded. A metal insert-molded into a resin base that includes a base, a circuit board on which electronic components for vehicles are mounted, fixed to the circuit board mounting part of the resin base, and a cover that covers the circuit board. The outer part of the housing of the manufactured parts is exposed to the outside of the housing, and the housing is composed of an adhesive fixing portion and a attachment portion to the vehicle side component by a screw fixing portion. Is bonded to the vehicle side parts by a sealing material in the range that covers the exposed part of the metal parts insert-molded on the resin base to the outside of the housing, and the screw fixing part is the adhesive fixing part. It extends to the outside and is configured on a cover or a resin base. When fixing to vehicle-side parts, it is necessary to divide the vehicle-side parts and fix the electronic control device to the divided parts. It is a feature.

Further, the method of assembling the electronic control device according to the embodiment of the present application has a circuit board mounting portion and a cover mounting portion, and the insert molding portion in which a metal coupling component is fixed to the circuit board mounting portion. Has a circuit board, a circuit board fixed to the circuit board mounting portion of the resin base, a cover main body portion, and a resin base mounting portion on which the resin base on which the vehicle is formed and the electronic components for the vehicle are mounted. An electronic control device equipped with a cover that covers electronic components for vehicles mounted on the circuit board is prepared for the cover main body.
The bottom of the insert molded portion formed in the circuit board mounting portion of the electronic control device is bonded to the fixed component using a sealing material.
It is characterized in that the fixed parts to which the electronic control device is fixed are mounted on the vehicle side parts.

Although the present application describes various exemplary embodiments and examples, the various features, embodiments, and functions described in one or more embodiments are applications of a particular embodiment. It is not limited to, but can be applied to embodiments alone or in various combinations. Therefore, innumerable variations not illustrated are envisioned within the scope of the art disclosed in the present application. For example, it is assumed that at least one component is modified, added or omitted, and further, at least one component is extracted and combined with the components of other embodiments.

2a Upper pin, 2b Lower pin, 3 Resin part, 5 Electronic control device, 6 Resin base, 6a Circuit board mounting part, 6b Cover mounting part, 6c Device fixing part, 6d Circuit board mounting part 6a bottom surface, 6e device Bottom of fixing part 6c, bottom of 6f cover mounting part 6b, 6g through hole, 6h female screw, 7 cover, 7a cover body part, 7b resin base mounting part, 7c opening, 8 circuit board, 9 metal nut, 9a Metal nut bottom, 9b metal nut bottom, 9c metal nut body, 9d female screw, 10 connectors, 11 board fixing screw, 12 cover fixing screw, 13 vehicle side parts, 14 electronic control device mounting screw, 15 insert molding part , 15a Insert molding part 15 bottom, 16 screw fixing part, 17 adhesive fixing part, 17a adhesive fixing part, 17b adhesive fixing part, 18 sealing material, 23 insert molding hollow part, 29 vehicle side component 13 division part, 30 vehicle Electronic components, 31 split part fixing screw, 32 sealing material, 40 interface with resin part 3

Claims (11)

A resin base that has a circuit board mounting part and a cover mounting part, and an insert molded part in which a metal coupling part is fixed is formed in the circuit board mounting part.
A circuit board on which electronic components for vehicles are mounted and fixed to the circuit board mounting portion of the resin base, and
It has a cover body and a resin base mounting part, and is provided with a cover that covers electronic parts for vehicles mounted on the circuit board.
The metal coupling component fixed to the insert molding portion is exposed from the bottom surface of the circuit board mounting portion.
In the state of being mounted on the vehicle side component, the insert molded portion formed on the circuit board mounting portion is coated with a sealing material at the bottom , and the resin base is provided with the sealing material on the vehicle side. Adhesively fixed to the parts and
The cover is an electronic control device comprising a screw fixing portion for the vehicle-side component . A resin base having a circuit board mounting portion, a cover mounting portion, and a device fixing portion, and an insert molding portion in which a metal coupling component is fixed is formed in the circuit board mounting portion.
A circuit board on which electronic components for vehicles are mounted and fixed to the circuit board mounting portion of the resin base, and
It has a cover main body and a resin base mounting portion, and the cover main body includes a cover that covers electronic components for vehicles mounted on the circuit board.
The device fixing portion of the resin base extends outward from the cover mounting portion.
The metal coupling component fixed to the insert molding portion is exposed from the bottom surface of the circuit board mounting portion.
In the state of being mounted on the vehicle side component, the insert molded portion formed on the circuit board mounting portion is coated with a sealing material at the bottom , and the resin base is provided with the sealing material on the vehicle side. Adhesively fixed to the parts and
An electronic control device characterized in that the device fixing portion of the resin base is fixed to the vehicle-side component by a screw . The electronic control device according to claim 2, wherein the cover includes a screw fixing portion to the vehicle-side component. The electronic control device according to claim 1 or 2, wherein the cover mounting portion of the resin base and the resin base mounting portion of the cover are coated with a sealing material and combined. The electronic control device according to claim 1 or 2, wherein the metal joint component fixed to the insert molded portion has a closed bottom portion. The electronic control device according to claim 1 or 2, wherein the insert molded portion formed in the circuit board mounting portion has a hollow bottom portion. The electronic control device according to claim 1 or 2, wherein the metal joint component fixed to the insert molded portion penetrates. When mounted on the vehicle side component, the device fixing portion is in contact with the vehicle side component, and the bottom portion of the insert molded portion is between the vehicle side component and the vehicle side component when the sealing material is not applied. The electronic control device according to claim 2, wherein there is a gap in the space. The electronic control according to claim 1 or 2, wherein the bottom portion of the insert molded portion is adhered to a fixed component by an applied sealing material, and the fixed component is mounted on a vehicle-side component. Device. The electronic control device according to claim 1 or 2, wherein the bottom portion of the insert molded portion to which the sealing material is applied is fixed to a transmission. It has a circuit board mounting part, a cover mounting part , and a device fixing part, and the circuit board mounting part has a resin base in which an insert molded part in which a metal coupling component is fixed is formed, and a vehicle. An electronic component is mounted, and the circuit board is fixed to the circuit board mounting portion of the resin base, and has a cover main body portion and a resin base mounting portion. The cover main body portion is attached to the circuit board. Prepare an electronic control device equipped with a cover that covers the mounted vehicle electronic components,
The metal coupling component fixed to the insert molding portion is exposed from the bottom surface of the circuit board mounting portion.
The bottom of the insert molded portion formed in the circuit board mounting portion of the electronic control device is adhered to the fixed component by using a sealing material, and
The device fixing portion of the resin base is fixed to the fixing part with screws, and the device fixing portion is fixed to the fixing part.
A method for assembling an electronic control device, which comprises mounting a fixed part to which the electronic control device is fixed on a vehicle-side part.

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