JP6865597B2 - Electronic control device - Google Patents

Description

The present invention relates to an electronic control device.

Conventionally, an electronic control device including a printed circuit board and a chassis that supports the corners of the printed circuit board is known. In such an electronic control device, a plurality of connectors are arranged along one side of the printed circuit board, and the electronic control device is electrically connected to an external device via the connectors (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 7-045972

However, in the above-mentioned electronic control device according to the prior art, the number of connectors increases as the electrical transmission / reception with the external device increases, and the printed circuit board supported by the chassis is affected by the increase of the number of connectors. There was a risk of

The present invention has been made in view of the above, and an object of the present invention is to provide an electronic control device capable of suppressing warpage of a printed circuit board.

In order to solve the above problems and achieve the object, in the electronic control device of the present invention, a plurality of connectors that electrically connect to an external device are arranged along one side of the main surface, and the main surface is covered with a plurality of connectors. It includes a printed circuit board on which electronic components are mounted, and a chassis that supports the corners of the printed circuit board from a surface opposite to the main surface. The printed circuit board has a flange portion extending outward from such a side on one side on which the connector is arranged. The chassis has a support that supports the collar on a side corresponding to one side of the printed circuit board.

According to the present invention, the warp of the printed circuit board can be suppressed.

FIG. 1 is an exploded perspective view of the electronic control device according to the embodiment. FIG. 2 is a side view of the electronic control device according to the embodiment. FIG. 3 is a schematic view of a cross-sectional portion taken along line AA of FIG. FIG. 4 is a schematic perspective view of a part of the electronic control device according to the embodiment. FIG. 5 is an explanatory diagram illustrating an electronic control device according to a first modification of the embodiment. FIG. 6 is an explanatory diagram illustrating an electronic control device according to a second modification of the embodiment. FIG. 7 is an explanatory diagram illustrating an electronic control device according to a third modification according to the embodiment. FIG. 8 is an explanatory diagram illustrating an electronic control device according to a fourth modification according to the embodiment.

Hereinafter, embodiments of the electronic control device disclosed in the present application will be described in detail with reference to the accompanying drawings. The present invention is not limited to the embodiments shown below.

First, the electronic control device 1 according to the embodiment will be described with reference to FIGS. 1 and 2. The electronic control device 1 is mounted on a vehicle such as an automobile, and is configured as an ECU (Electronic Control Unit) that controls a controlled object such as an engine or an air conditioner.

FIG. 1 is an exploded perspective view of the electronic control device 1 according to the embodiment. FIG. 2 is a side view of the electronic control device 1 according to the embodiment. In FIGS. 1 and 2, for convenience of explanation, the Z-axis with the cover 4 side of the electronic control device 1 as the positive direction, the width direction (long side direction) of the electronic control device 1 as the X-axis, and the electronic control device 1 A three-dimensional Cartesian coordinate system is shown with the Y-axis in the depth direction (short side direction) of. Such a Cartesian coordinate system may also be shown in other drawings used in the following description.

As shown in FIGS. 1 and 2, the electronic control device 1 according to the embodiment includes a printed circuit board 2, a chassis 3, and a cover 4.

The printed circuit board 2 is, for example, a rectangular substrate made of glass epoxy resin or the like, and has an electronic component (not shown) that controls an automobile engine and equipment around the engine on a main surface (upper surface) on the positive direction side of the Z axis. Is implemented. Screw holes 21a, 21b, 21c, and 21d into which the screws 5 are inserted are formed at the four corners of the printed circuit board 2.

Further, the printed circuit board 2 includes a connector 22 and a ribbon connector 23. A plurality of connectors 22 are arranged along one side (long side) along the X-axis direction on the upper surface of the printed circuit board 2, and in this example, five connectors 22 are arranged. The connector 22 has a spring 22a that comes into contact with the cover 4 that covers the upper surface of the printed circuit board 2. The ribbon connector 23 is arranged along a side along which a plurality of connectors 22 are aligned on the upper surface of the printed circuit board 2.

In the connector 22, the connection port 22b faces the outside through the rectangular window portions 40a, 40b, 40c opened in the side wall on the negative side of the Y-axis of the cover 4, and is not shown as an external device. It is electrically connected to a connector provided at the end of the cable extending from.

The ribbon connector 23 has a connection port 23a that faces the outside through a rectangular window portion 40d opened in the side wall on the negative side of the Y-axis of the cover 4, and is a cable extending from an external device (not shown). It is electrically connected to the connector provided at the end of the window.

The chassis 3 is, for example, a rectangular frame made of aluminum or the like. Support pieces 31a, 31b, 31c, 31d for supporting the printed circuit board 2 projecting in the positive direction of the Z axis with respect to the bottom surface 30 of the chassis 3 are formed at the four corners of the chassis 3. Screw holes 32a, 32b, 32c, 32d into which the screw 5 is inserted are formed in each of the support pieces 31a, 31b, 31c, 31d.

The cover 4 is, for example, a box-shaped housing made of aluminum or the like. The cover 4 has rectangular windows 40a, 40b, 40c, 40d on the side wall at positions corresponding to the connector 22 and the ribbon connector 23. Screw holes 41a, 41b, 41c, 41d into which the screw 5 is inserted are formed at the four corners of the surface (bottom surface) of the cover 4 on the positive direction side of the Z axis. Further, the cover 4 is attached to the printed circuit board 2 from the opposite side of the chassis 3, and covers the printed circuit board 2 and the chassis 3.

The electronic control device 1 described above is laminated in the order of chassis 3, printed circuit board 2, and cover 4, and the printed circuit board 2 is fixed between the chassis 3 and the cover 4 by screws 5. Specifically, the printed circuit boards 2 are fixed to the cover 4 by pressing the support pieces 31a, 31b, 31c, and 31d formed at the four corners of the chassis 3 in the positive direction of the Z axis by tightening the screws 5. .. When the printed circuit board 2 is assembled to the cover 4, the spring 22a of the connector 22 comes into contact with the bottom surface of the cover 4. As a result, the printed circuit board 2 is grounded via the connector 22, the spring 22a, and the cover 4.

Here, with reference to FIG. 1, a problem that occurs when the chassis 3, the printed circuit board 2, and the cover 4 are assembled in this order will be described. In the electronic control device 1, the number of connectors 22 provided along one side (long side) on the upper surface of the printed circuit board 2 increases with the increase in electrical transmission / reception with the external device, and the number of such connectors 22 is increased. The printed circuit board 2 supported by the chassis 3 may be warped due to the influence of the above.

Specifically, due to the restoring force of the plurality of springs 22a that come into contact with the bottom surface of the cover 4, both ends of the printed circuit board 2 may warp in the negative direction (downward) of the Z axis with respect to the chassis 3. In this example, five connectors 22 are provided along one side on the upper surface of the printed circuit board 2, but the restoring forces of the individual springs 22a are set to the same magnitude.

For this reason, for example, the downwardly warped portion of the printed circuit board 2 may come into contact with the bottom surface 30 of the chassis 3 to cause dielectric breakdown, or the printed circuit board 2 may be cracked.

Therefore, the electronic control device 1 is provided with a flange portion 20 extending outward from such a side on one side on which the connector 22 is arranged on the printed circuit board 2, and is provided on one side on which the connector 22 is arranged on the chassis 3. A support 33 that supports the collar 20 is provided on the corresponding side. The corresponding side in the chassis 3 is a side parallel to one side in which the connector 22 of the printed circuit board 2 is arranged in the vertical direction (Z-axis direction).

As a result, in the electronic control device 1 according to the present embodiment, the flange portion 20 of the printed circuit board 2 is supported by the support 33 provided on the chassis 3, so that the plurality of springs 22a that come into contact with the bottom surface of the cover 4 are restored. It is possible to suppress the warp of the printed circuit board 2 due to the force.

More specifically, it will be described with reference to FIG. FIG. 3 is a schematic view of a cross-sectional portion taken along line AA of FIG. The components having the same functions as those shown in FIG. 1 are designated by the same reference numerals as those shown in FIG. 1, and the description thereof will be omitted.

As shown in FIG. 3, a part of the plurality of connectors 22 is arranged so as to overlap the surface (upper surface) of the collar portion 20 on the positive direction side of the Z axis (see FIG. 1). Further, the support 33 has a folded-back portion 33a whose tip is folded back on the negative direction side (outside) of the Y-axis, and the surface (upper surface) of the folded-back portion 33a on the positive direction side of the Z axis hits the lower surface of the collar portion 20. Get in touch.

Specifically, the folded-back portion 33a is folded outward from the base end side of the collar portion 20 and protrudes from the tip of the collar portion 20. That is, the folded-back portion 33a supports the printed circuit board 2 so as to cover the entire lower surface of the flange portion 20.

As a result, in the electronic control device 1 according to the present embodiment, the restoring force F1 of the spring 22a of the connector 22 is canceled by the force F2 of the folded-back portion 33a pressing the collar portion 20 by tightening the screw 5. Further, by folding the tip of the support 33 outward to form the folded portion 33a, a large area in contact with the collar portion 20 is secured, and the force F2 for pressing the collar portion 20 is increased.

Therefore, in the electronic control device 1 according to the present embodiment, it is possible to suppress the warp of the printed circuit board 2 due to the restoring force F1 of the plurality of springs 22a that come into contact with the bottom surface of the cover 4.

Further, in the electronic control device 1 according to the present embodiment, the printed circuit board 2 has a resist-removed region on the upper surface of the flange portion 20. Specifically, it will be described with reference to FIG. FIG. 4 is a schematic perspective view of a part of the electronic control device 1 according to the embodiment.

Note that, in FIG. 4, for convenience of explanation, the five connectors 22 that are partially arranged so as to overlap the upper surface of the collar portion 20 are omitted. Further, the description of the component having the same function as that of the component shown in FIG. 1 will be omitted by assigning the same code as the code shown in FIG.

As shown in FIG. 4, the electronic control device 1 has a resist-removed region 6 on the upper surface of the flange portion 20 in the printed circuit board 2 in which the resist is formed over the entire upper surface. Specifically, the resist-free region 6 is formed over the entire upper surface of the flange portion 20.

As a result, in the electronic control device 1 according to the present embodiment, noise generated from the electronic components arranged on the printed circuit board 2 is removed via the resist-unresisted region 6, the support 33, and the chassis 3 of the collar portion 20. To.

Therefore, in the electronic control device 1 according to the present embodiment, sufficient EMC (Electro-Magnetic Compatibility) resistance can be obtained by removing the resist from the upper surface of the flange portion 20 supported by the support 33.

As described above, the electronic control device 1 according to the present embodiment includes a flange portion 20 extending outward from the side on which the connector 22 is arranged on the printed circuit board 2, and the connector 22 on the chassis 3. A support 33 that supports the collar portion 20 is provided on a side corresponding to one side on which the is arranged.

As a result, in the electronic control device 1 according to the present embodiment, the flange portion 20 of the printed circuit board 2 is supported by the support 33 provided on the chassis 3, so that the plurality of springs 22a that come into contact with the bottom surface of the cover 4 are restored. It is possible to suppress the warp of the printed circuit board 2 due to the force F1.

Further, the electronic control device 1 according to the above-described embodiment has a folded-back portion 33a whose tip is folded outward on the support 33, and the upper surface of the folded-back portion 33a abuts on the lower surface of the collar portion 20.

As a result, the electronic control device 1 according to the above-described embodiment can secure a large area of contact with the collar portion 20 on the support 33, and can increase the force F2 for pressing the collar portion 20.

Further, the electronic control device 1 according to the above-described embodiment has sufficient EMC resistance by having a resist-removed region 6 on the upper surface of the flange portion 20 in the printed circuit board 2 in which the resist is formed over the entire upper surface. Obtainable.

Further, in the electronic control device 1 according to the above-described embodiment, since the upper surface of the flange portion 20 is the unresisted area 6, it is not necessary to perform silk printing on the unresisted area 6, so that the manufacturing cost of the device is high. Can be lowered.

In the above-described embodiment, the tip of the support 33 is folded outward, but the present invention is not limited to this embodiment. As another form, the support 33 may have a folded-back portion whose tip is folded back in the positive direction (inside) of the Y-axis, and the upper surface of the folded-back portion may come into contact with the lower surface of the flange portion 20. In such a form, the folded-back portion is folded inward from the tip of the collar portion 20 and reaches the base end of the collar portion 20.

Even in such a form, similarly to the above, a large area of contact with the collar portion 20 can be secured in the support 33, and the force F2 for pressing the collar portion 20 can be increased.

Further, the tip of the support 33 may not be folded outward or inward, and the collar portion 20 may be supported by the unfolded tip. Even in such a form, it is possible to suppress the warp of the printed circuit board 2 due to the restoring force F1 of the plurality of springs 22a that come into contact with the bottom surface of the cover 4.

Further, in the above-described embodiment, the restoring force of each spring 22a in the five connectors 22 is set to the same magnitude, but the restoring force of the spring 22a is increased as the connector 22 closer to the corner of the printed circuit board 2. You may. Specifically, in FIG. 1, the restoring force of the spring 22a is increased as the connector 22 is closer to the screw hole 21a formed in the printed circuit board 2.

As a result, the warp of the printed circuit board 2 caused by the restoring force of the plurality of springs 22a that come into contact with the bottom surface of the cover 4 is alleviated, and the support 33 supports the collar portion 20 without requiring an excessively strong tightening force by the screw 5. can do.

Next, the electronic control device 1a according to the first modification of the embodiment will be described with reference to FIG. FIG. 5 is an explanatory diagram illustrating the electronic control device 1a according to the first modification of the embodiment. The components having the same functions as those shown in FIG. 1 are designated by the same reference numerals as those shown in FIG. 1, and the description thereof will be omitted.

The electronic control device 1a includes a first tongue portion 24 extending outward from the flange portion 20 on the printed circuit board 2, and a second tongue extending outward from the folded-back portion 33a on the support 33. A part 34 is provided.

As shown in FIG. 5, the electronic control device 1a according to the first modification has a first tongue portion 24 extending outward from the collar portion 20 in the printed circuit board 2.

The first tongue portion 24 is provided at a position on the collar portion 20 where a plurality of, for example, five connectors 22 are arranged. In this example, the first tongue portion 24 is provided at a position where the third connector 22 and the fourth connector 22 are arranged in the flange portion 20 counting from the connector 22 closest to the screw hole 21a. At such a location, the effect of the warp generated on the printed circuit board 2 is relatively large.

Further, in the electronic control device 1a according to the first modification, the support 33 extends outward from the folded portion 33a at a position corresponding to the first tongue portion 24 in the folded portion 33a, and the upper surface is the first tongue portion. It has a second tongue portion 34 that abuts on the lower surface of the 24. The position of the folded-back portion 33a corresponding to the first tongue portion 24 is a position parallel to the first tongue portion 24 provided on the flange portion 20 of the printed circuit board 2 in the vertical direction (Z-axis direction). Is.

As described above, in the electronic control device 1a according to the first modification, in addition to the flange portion 20 of the printed circuit board 2 being supported by the folded-back portion 33a of the support 33, the second modified portion 33a is provided. The tongue portion 34 supports the first tongue portion 24 provided on the collar portion 20.

As a result, the electronic control device 1a according to the first modification can more reliably suppress the warp of the printed circuit board 2 due to the restoring force of the plurality of springs 22a that come into contact with the bottom surface of the cover 4.

In the first modification, the first tongue portion 24 is located at a position where the third connector 22 and the fourth connector 22 are arranged, counting from the connector 22 closest to the screw hole 21a in the flange portion 20. Although it is provided, the place where the first tongue portion 24 is installed is not limited to this place.

The first tongue portion 24 is provided, for example, at a position where the second connector 22, the third connector 22, and the fourth connector 22 are arranged, counting from the connector 22 closest to the screw hole 21a in the flange portion 20. You may. The second tongue portion 34 is provided at a position corresponding to the first tongue portion 24 in the folded-back portion 33a.

Even in such an installation location, the warpage of the printed circuit board 2 due to the restoring force of the plurality of springs 22a that come into contact with the bottom surface of the cover 4 can be more reliably suppressed, as described above.

Next, the electronic control device 1b according to the second modification of the embodiment will be described with reference to FIG. In the electronic control device 1b, the collar portion 20 is formed only in the region where the connector 22 is arranged on one side of the printed circuit board 2 where the connector 22 is arranged.

FIG. 6 is an explanatory diagram illustrating an electronic control device 1b according to a second modification of the embodiment. The components having the same functions as those shown in FIG. 1 are designated by the same reference numerals as those shown in FIG. 1, and the description thereof will be omitted.

As shown in FIG. 6, in the electronic control device 1b according to the second modification, the collar portion 20 is provided only in the area where the two connectors 22 are arranged on one side where the two connectors 22 are arranged on the printed circuit board 2. It is formed. Further, the support 33 is formed only in the region corresponding to the region where the two connectors 22 are arranged. The support 33 formed in such a region has a folded-back portion 33a whose tip is folded outward.

As described above, in the electronic control device 1b according to the second modification, the collar portion 20 formed only in the region where the two connectors 22 are arranged on one side of the printed circuit board 2 corresponds to the collar portion 20. It is supported by the folded-back portion 33a of the support 33 formed only in the region.

As a result, the electronic control device 1b according to the second modification can suppress the local warpage of the printed circuit board 2 due to the restoring force of the two springs 22a that come into contact with the bottom surface of the cover 4.

Further, in the electronic control device 1b according to the second modification, since the collar portion 20 is formed only in the region where the connector 22 is arranged on one side of the printed circuit board 2, the manufacturing cost of the device can be reduced.

In the second modification, the collar portion 20 is formed only in the area where the two connectors 22 are arranged on one side of the printed circuit board 2, but for example, when five connectors 22 are arranged. The collar portion 20 is formed only in the area where the five connectors 22 are arranged.

Further, for example, when a plurality of connectors 22 are arranged at a predetermined interval on one side of the printed circuit board 2, the flange portions 20 are arranged at a predetermined interval in the area where the connectors 22 are arranged. Each may be formed. The supports 33 are provided at positions corresponding to the flange portions 20 at predetermined intervals.

Even in such a case, the warp of the printed circuit board 2 due to the restoring force of the plurality of springs 22a that come into contact with the bottom surface of the cover 4 can be suppressed as described above.

In the electronic control device 1b according to the second modification, the first tongue portion 24 may be provided at a position corresponding to each flange portion 20. In such a case, the support 33 provided at a position corresponding to each flange portion 20 has a second tongue portion 34 extending outward from the folded portion 33a at a position corresponding to the first tongue portion 24.

Next, the electronic control device 1c according to the third modification of the embodiment will be described with reference to FIG. 7. In the electronic control device 1c, in the support 33 that supports the flange portion 20 formed on one side on which the connector 22 is arranged on the printed circuit board 2, a step portion is provided on the upper surface of the folded portion 33a of the support 33. 35 was provided.

FIG. 7 is an explanatory diagram illustrating an electronic control device 1c according to a third modification of the embodiment. The components having the same functions as those shown in FIG. 1 are designated by the same reference numerals as those shown in FIG. 1, and the description thereof will be omitted.

As shown in FIG. 7, in the electronic control device 1c according to the third modification, the support 33 has a stepped portion 35 on the upper surface of the folded-back portion 33a.

The stepped portion 35 is provided at a portion of the folded-back portion 33a corresponding to a flange portion 20 in which a plurality of, for example, five connectors 22 are arranged. In this example, to explain with reference to FIG. 5, it is provided at a position corresponding to the third connector 22 and the fourth connector 22 counting from the connector 22 closest to the screw hole 21a in the flange portion 20. At such a location, the effect of the warp generated on the printed circuit board 2 is relatively large.

As described above, in the electronic control device 1c according to the third modification, the force for holding down the lower surface of the flange portion 20 is increased by the stepped portion 35 provided in the folded-back portion 33a.

As a result, the electronic control device 1c according to the third modification can more reliably suppress the warp of the printed circuit board 2 due to the restoring force of the plurality of springs 22a that come into contact with the bottom surface of the cover 4.

The location of the stepped portion 35 in the folded-back portion 33a is determined by the number of connectors 22 arranged along one side of the printed circuit board 2. For example, when eight connectors 22 are arranged along one side of the printed circuit board 2, the stepped portion 35 is counted from the connector 22 closest to the screw hole 21a in the flange portion 20 in the folded portion 33a. It is preferable that the connector 22 is provided at a corresponding position between the fourth connector 22 and the fifth connector 22.

Further, in the electronic control device 1c according to the third modification, the stepped portion 35 is provided on the folded-back portion 33a of the support 33, but the connector 22 on the printed circuit board 2 is arranged on one side from the side to the outside. A step portion may be provided on the lower surface of the extending flange portion 20. It is preferable that the step portion of the collar portion 20 is installed at the same position as described above.

Even in such a case, the force for holding down the lower surface of the flange portion 20 becomes stronger due to the step portion provided on the flange portion 20, and the warpage of the printed circuit board 2 due to the restoring force of the plurality of springs 22a that abut on the bottom surface of the cover 4 is more reliable. Can be suppressed.

Next, the electronic control device 1d according to the fourth modification of the embodiment will be described with reference to FIG. In the electronic control device 1d, the width of the collar portion 20 in the short side direction is made larger than the width of the folded-back portion 33a in the short side direction.

FIG. 8 is an explanatory diagram illustrating the electronic control device 1d according to the fourth modification of the embodiment. In the electronic control device 1d shown in FIG. 8, the chassis 3 side is the front surface for convenience of explanation. Further, the description of the component having the same function as that of the component shown in FIG. 1 will be omitted by assigning the same code as the code shown in FIG.

As shown in FIG. 8, in the electronic control device 1d according to the fourth modification, the width of the collar portion 20 in the Y-axis positive direction (short side direction) is changed to the width of the folded-back portion 33a in the Y-axis positive direction (short side direction). Is larger than.

As a result, the electronic control device 1d according to the fourth modification alleviates the warp caused by the restoring force of the plurality of springs 22a that abut on the bottom surface of the cover 4, and the support 33 exerts an excessively strong tightening force by the screw 5. The collar 20 can be supported without the need.

Further, in the electronic control device 1d according to the fourth modification, the width of the collar portion 20 in the short side direction is made larger than the width of the folded-back portion 33a in the short side direction, so that the connector 22 and the ribbon connector 23 are made of the collar portion 20. It can be installed so that part of it protrudes from.

Thereby, in the electronic control device 1d according to the fourth modification, the connector provided at the end of the cable extending from the external device (not shown) can be easily attached to the connector 22 and the ribbon connector 23.

In the electronic control devices 1, 1a, 1b, 1c, and 1d according to the above-described embodiment, when a plurality of connectors 22 are arranged along one long side of the printed circuit board 2, the one long side is used. The collar portion 20 is formed in, but the present invention is not limited to this.

For example, when a plurality of connectors 22 are installed along one short side of the printed circuit board 2, the collar portion 20 may be formed on such one short side. The support 33 is provided in the chassis 3 at a position corresponding to the flange portion 20, that is, a position parallel to the flange portion 20 in the vertical direction (Z-axis direction).

Further, in the electronic control devices 1, 1a, 1b, 1c, and 1d according to the above-described embodiment, the shape of the printed circuit board 2 is rectangular, but the shape is not limited to this shape. The other shape of the printed circuit board 2 may be, for example, a square shape or the like. When the shape of the printed circuit board 2 is square, it is preferable that the shape of the chassis 3 is also square.

Further effects and variations can be easily derived by those skilled in the art. For this reason, the broader aspects of the invention are not limited to the particular details and representative embodiments expressed and described as described above. Therefore, various modifications can be made without departing from the spirit or scope of the general concept of the invention as defined by the appended claims and their equivalents.

1, 1a to 1d Electronic control device 2 Printed circuit board 20 collar 21a to 21d Screw hole 22 Connector 22a Spring 22b Connection port 23 Ribbon connector 23a Connection port 3 Chassis 30 Bottom surface 31a to 31d Support piece 32a to 32d Screw hole 4 Cover 41a to 41d Screw hole 5 Screw 6 Resist-free area

Claims (7)

A printed circuit board on which a plurality of connectors that electrically connect to an external device are arranged along one side of the main surface and electronic components are mounted on the main surface.
A chassis that supports the corners of the printed circuit board from a surface opposite to the main surface is provided.
The printed circuit board
On the one side on which the connector is arranged, a collar portion extending outward from the side is provided.
The chassis is
Have a support for supporting the flange portion on the side corresponding to said one side of the printed circuit board,
The support
It has a folded-back portion whose tip is folded outward, and corresponds to a central region in the longitudinal direction of the upper surface of the folded-back portion in which a plurality of the connectors are arranged along the one side of the printed circuit board. An electronic control device characterized by having a stepped portion that is projected on a region and whose upper surface abuts on the lower surface of the flange portion. The collar is
It is formed in the area where the connector is arranged on the one side where the connector is arranged.
The support
The electronic control device according to claim 1, wherein the electronic control device is formed in a region corresponding to the collar portion. The printed circuit board
The electronic control device according to claim 1 or 2 , wherein a resist-free region is provided on the upper surface of the collar portion. The connector is
The electronic control device according to any one of claims 1 to 3 , wherein the printed circuit board has a spring that comes into contact with a cover that covers a surface on which the connector is arranged. The plurality of connectors
The electronic control device according to any one of claims 1 to 4 , wherein at least a part thereof is arranged so as to overlap the upper surface of the collar portion. A printed circuit board on which a plurality of connectors that electrically connect to an external device are arranged along one side of the main surface and electronic components are mounted on the main surface.
A chassis that supports the corners of the printed circuit board from a surface opposite to the main surface is provided.
The printed circuit board
On the one side on which the connector is arranged, a collar portion extending outward from the side is provided.
The chassis is
Have a support for supporting the flange portion on the side corresponding to said one side of the printed circuit board,
The collar is
A step of the lower surface that is projected in a region corresponding to the central region in the longitudinal direction of the region in which the plurality of connectors are arranged along the one side of the printed circuit board, and the lower surface abuts on the upper surface of the support. an electronic control unit, characterized in that it have a part. A printed circuit board on which a plurality of connectors that electrically connect to an external device are arranged along one side of the main surface and electronic components are mounted on the main surface.
A chassis that supports the corners of the printed circuit board from a surface opposite to the main surface is provided.
The printed circuit board
On the one side on which the connector is arranged, a collar portion extending outward from the side is provided.
The chassis is
Have a support for supporting the flange portion on the side corresponding to said one side of the printed circuit board,
The connector is
An electronic control device having a spring that comes into contact with a cover that covers a surface on the printed circuit board on which the connector is arranged, and that the connector closer to the corner of the printed circuit board has a greater restoring force of the spring.

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