JP6764032B2 - Electronic control unit - Google Patents

Description

The present invention relates to an electronic control unit.

Since many types of electronic control devices such as internal combustion engine control devices and power steering control devices are mounted on automobiles, the mounting arrangements are also various. Then, in order to obtain a degree of freedom in arranging the electronic control unit to be attached to the vehicle body, brackets having various shapes for attaching the electronic control unit to the vehicle body are prepared. For the electronic control unit to which these brackets are attached, various shapes of the bracket attachment portions are required so as to correspond to various attachments. The fixed structure of the control device and the bracket is described in Patent Document 1 and Patent Document 2.

Japanese Unexamined Patent Publication No. 2013-233914 Japanese Unexamined Patent Publication No. 2013-041863

According to Patent Documents 1 and 2, the structure is such that bracket mounting portions are prepared on a plurality of surfaces of the control device. In this conventional structure, the brackets are fixed in a plurality of combinations, which tends to hinder or restrict the standardization of the control device and the bracket, and as a result, increase the cost of the control device itself.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an electronic control unit that can be mounted while ensuring a degree of freedom in mounting arrangement and that can suppress an increase in manufacturing cost. is there.

In order to solve the above problems, the electronic control unit according to the present invention is an electronic control unit including a case for accommodating a circuit board and a mounting bracket for mounting the case, and a mounting bracket is provided on the mounting surface of the case. Is provided to the case at a plurality of points facing each other across a predetermined point on the mounting surface, and the fixing portion is fixed by inserting the mounting bracket from any one of the predetermined plurality of directions. To do.

According to the present invention, the mounting bracket can be inserted into the fixing portion from any one of a plurality of predetermined directions, and the fixing portion straddles a predetermined point on the mounting surface and faces the case at a plurality of positions. It is fixed. As a result, the electronic control unit can be attached to the attached portion with a high degree of freedom by the attachment bracket.

An exploded perspective view of the electronic control unit according to the first embodiment. A perspective view showing an enlarged case. The front view which shows the split fixing part enlarged. A perspective view of the mounting bracket mounted on the case. A cross-sectional view showing an enlarged view of inserting the mounting bracket into the fixed portion. A cross-sectional view showing how the convex portion approaches the hole portion. A cross-sectional view showing a state in which a convex portion is engaged with a hole portion. The perspective view of the electronic control unit which concerns on 2nd Example. The plan view of the electronic control unit which concerns on 3rd Example. The perspective view of the electronic control unit which concerns on 4th Embodiment. The perspective view of the electronic control unit which concerns on 5th Embodiment. The perspective view of the electronic control unit which concerns on 6th Embodiment. The perspective view of the electronic control unit which concerns on a modification. The perspective view of the electronic control unit which concerns on 7th Embodiment. The perspective view of the electronic control unit which concerns on a modification.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, for example, an electronic control device CU that houses a driving support system, an automatic transmission control system, a power steering control system, a 4WD control system, a seatbelt control system, etc. used for automobiles will be described. The electronic control unit CU of the present embodiment can be attached to the vehicle body with high reliability, high freedom, and low cost.

In the present embodiment, in the case 3 formed in a bottomed square cylinder shape for incorporating the circuit board 1, a fixing portion 32 for the mounting bracket 5 is prepared on one surface 30 thereof. The fixing portion 32 is configured so that the mounting bracket 5 can be fixed on both the insertion side and the opposite side extending from the center portion of the case. The fixing portion 32 has a protrusion 34 for positioning the mounting bracket 5 and preventing it from coming off after insertion. Hereinafter, the mounting bracket 5 may be abbreviated as the bracket 5.

The bracket 5 is formed with a guide portion 52 on the tip end side in the insertion direction. Then, a hole (or a concave portion) 51 is formed in the bracket 5 so as to fit with the convex portion 34 provided on the case side after insertion. In the present embodiment, the bracket 5 can be inserted into the fixing portion 32 and attached from two or more directions, ensuring a degree of freedom in attachment arrangement.

An example of the shape of the fixed portion 32 will be given. The fixing portion 32 can be composed of, for example, four or more divided fixing portions 320. It is also possible to configure the fixed portion 32 as a single fixed portion without dividing it.

For example, a total of four divided fixing portions 320 are arranged 90 degrees apart from each other with the center of gravity of the mounting surface 30 as the central axis. Each split fixing portion 320 includes a support portion 321 erected on the mounting surface 30 and a pressing portion 33 extending from the support portion 321 in parallel with the mounting surface 30. The pressing portion 33 has a plurality of claw portions 331 extending in different directions. Each pressing portion 33 has, for example, two claw portions 331 having different orientations of 90 degrees on the same plane.

In the present embodiment, the claw portions 331 of the opposing split fixing portions 320 form gaps 35 and 36 coaxially separated from each other. The gap 35 is a gap on the inlet side through which the bracket 5 is inserted, and the gap 36 is a gap on the outlet side that reaches the tip of the bracket 5.

In the present embodiment, by inserting the bracket 5 in parallel to the surface 30 provided with the fixing portion 32, the split fixing portion 320 having the pressing portion 33 is arranged to face each other so as to fix the bracket 5 to the case 3. .. The pressing portion 33 is set to have a size for pressing the bracket 5, and a surface 332 in contact with the bracket 5 is formed on the tip end side.

In the example in which the fixing portion 32 is divided into four divided fixing portions 320 and arranged at intervals of 90 degrees, the bracket 5 can be inserted into the fixing portion 32 from four directions separated by 90 degrees. That is, in the present embodiment, a plurality of insertion directions (mounting directions) of the bracket 5 are prepared, and an appropriate direction is selected from the plurality of insertion directions according to the situation of the vacant space and the like. The insertion direction (mounting method) of the bracket 5 corresponds to "a plurality of predetermined directions".

The bracket 5 inserted into the fixing portion 32 from a certain direction is pressed down and fixed to the case 3 on the inlet 35 side (insertion start side) and the outlet 36 side (insertion completion side) straddling the center of gravity of the mounting surface 30. ..

Further, the hole 51 formed in the bracket 5 is more firmly fixed by engaging with the protrusion 34 (also referred to as the protrusion 34) formed at the center of gravity of the mounting surface 30. Further, in the present embodiment, a plurality of ribs 38 are formed in parallel on the back side of the mounting surface 30 of the case 3 in which the bracket fixing portion 32 is installed. These ribs 38 suppress the deformation of the mounting surface 30. Therefore, the flatness of the fixing portion 32 can be ensured, the workability of inserting the bracket 5 can be improved, and the stability at the time of fixing can be improved.

Further, the support portion 321 is provided with a positioning portion 333 that suppresses the displacement of the bracket 5 in the width direction and positions the bracket 5.

A device mounting portion 56 for fixing to a mounted portion such as a vehicle body with screws or the like is provided on the base end side of the bracket 5.

According to the present embodiment configured as described above, the mounting bracket 5 is inserted into the fixing portion 32 from any one of a plurality of predetermined directions (for example, two or more directions or four or more directions). As a result, the case 3 can be attached to a mounted portion such as a vehicle body. Further, according to the present embodiment, the fixing portion 32 fixes the mounting bracket 5 to the case 3 at a plurality of locations set across a predetermined point (for example, the center of gravity) of the mounting surface 30, so that the case 3 is fixed to the vehicle body or the like. Can be firmly attached to.

Therefore, according to the electronic control unit of the present embodiment, it is possible to secure a degree of freedom in mounting arrangement without preparing various types of cases and mounting brackets as in the prior art, and it is possible to firmly mount the device. According to this embodiment, since the number of parts for mounting can be reduced and various mounting arrangements can be realized, various shapes of mounted parts (vehicle body, etc.) can be suppressed while suppressing an increase in manufacturing cost, inventory management cost, etc. ) Can be applied.

Examples will be described with reference to FIGS. 1 to 7. FIG. 1 shows an exploded perspective view of the electronic control unit CU according to the first embodiment. FIG. 2 shows a perspective view of the case 3 as viewed from diagonally below. FIG. 3 is an enlarged front view of the split fixing portion 320. FIG. 4 is a perspective view of the assembled electronic control unit CU.

The electronic control unit CU includes, for example, a circuit board 1, a case 3 for accommodating the circuit board 1, a cover 4 for covering the opening 31 of the case 3, and a bracket 5 for attaching the case 3 to the vehicle body. ..

The circuit board 1 includes a plurality of electronic components 11 and a connector 2 that electrically connects the electronic components 11 and an external circuit (not shown). The plurality of electronic components 11 form an electronic circuit for electrically controlling an external device (not shown).

The case 3 is formed in a bottomed square tube shape, and the circuit board 1 is inserted through the opening 31 and assembled into the case 3. A plurality of guide grooves 37 for guiding the circuit board 1 are formed on the inner surface side of the case 3. When the circuit board 1 is slid from the opening 31 and inserted into the case 3, the peripheral edge of the circuit board 1 is supported by the guide grooves 37 and mounted in the case 3.

After assembling the circuit board 1 into the case 3, the cover 4 is attached so as to cover the opening 31. A connector hole 41 corresponding to the connector 2 is formed in the cover 4, and the connector 2 is fitted into the hole 41. A sealing member (not shown) can be provided between the cover 4 and the case 3 or between the hole 41 and the connector 2 in order to ensure the sealing property of the case 3 against gas or liquid.

The fixing portion 32 will be described. A fixing portion 32 for fixing the bracket 5 is provided on the mounting surface 30 of the case 3.

The fixing portion 32 can be composed of, for example, a plurality of divided fixing portions 320. In the example of FIG. 1, a total of four divided fixing portions 320 are provided in the case 3 so as to correspond to the four corners of the rectangular mounting surface 30.

Specifically, the fixing portion 32 sandwiches a plurality of facing locations across a predetermined point C (center of gravity) of the mounting surface 30, so that the bracket 5 is inserted in the directions (-X direction, X direction, -Y direction, Y). It is composed of a plurality of divided and fixed portions 320 arranged in directions orthogonal to any one of the directions).

That is, in order to form the four insertable directions (-X, X, -Y, Y) of the bracket 5, the inlet side 35 (insertion start side) and the outlet side 36 (insertion end side) of each insertable direction. Divided fixing portions 320 facing each other are arranged in each. By arranging the four split fixing portions 320, a total of four bracket insertable directions are formed.

Each split fixing portion 320 includes a support portion 321 erected on the mounting surface 30 and a holding portion 32 provided on the upper side of the support portion 321 in parallel with the mounting surface 30. The pressing portion 32 has a plurality of claw portions 331 extending toward other split fixing portions 320 adjacent in different directions. In this embodiment, the claw portion 331 is formed in a direction different by 90 degrees.

By facing the pressing portions 33 of the divided fixing portions 320 adjacent to each other, gaps 35 and 36 through which the bracket 5 is inserted and fixed are formed. In FIG. 1, only the gaps 35 and 36 in the X-axis direction are designated, but similar gaps are also formed in the Y-axis direction. Further, depending on which direction the bracket 5 is inserted, which of the opposing gaps becomes the gap on the inlet side and which becomes the gap on the outlet side is determined.

The fixing portion 32 is lightly press-fitted by a plurality of pressing portions 33 for sandwiching the bracket 5, and is fixed to the case 3. As shown in FIG. 3, a receiving portion 332 is provided on the tip end side of the pressing portion 33 at the portion to be lightly press-fitted.

Further, a positioning portion 333 for determining the position of the bracket 5 in the width direction is provided near the base portion of the support portion 321 that fixes the pressing portion 33 to the case. By the positioning portion 333, the position in the direction orthogonal to the insertion direction of the bracket 5 (the width direction of the bracket) can also be regulated.

Return to FIG. The mounting surface 30 of the case 3 is provided with a protrusion 34 for preventing the bracket 5 from coming off. Hereinafter, it may be abbreviated as the convex portion 34. The bracket 5 is formed with a hole 51 corresponding to the convex portion 34. When the convex portion 34 enters and fits into the hole portion 51, the bracket 5 is engaged with the case 3 and is prevented from falling off.

As shown in FIG. 2, a plurality of ribs 38 are provided on the inner surface of the case 3 in which the fixing portion 32 is installed, that is, on the back surface of the mounting surface 30, so as to suppress the warp of the case 3. Each rib 38 enhances the rigidity of the mounting surface 30 and maintains flatness. The rib 38 can also be called a warp suppressing portion 37. The warp holding portion 37 may have a structure capable of maintaining the flatness of the mounting surface 30, and is not limited to the rib structure. By suppressing the deformation of the mounting surface 30 and maintaining the flatness, it is possible to prevent the convex portion 34 from coming off from the hole portion 51.

Return to FIG. 1 again. The bracket 5 is formed with a relief portion 55 located closer to the tip end side in the insertion direction than the hole portion 51 so that the bracket 5 does not interfere with the convex portion 34. The relief portion 55 is formed according to the shape of the convex portion 34. When viewed from the upper side of FIG. 1, the relief portion 55 slightly protrudes upward. The relief portion 55 is formed so as to extend from the central portion on the tip end side of the bracket 5 toward the hole portion 51.

The relief portion 55 has a function of guiding the bracket 5 at the time of insertion and a function of guiding the convex portion 34 to the hole portion 51. That is, the relief portion 55 is installed in the gap between the pressing portions 33 so as to facilitate the insertion when the bracket 5 is inserted into the fixing portion 32, and guides the insertion. Further, the relief portion 55 guides the hole portion 51 of the bracket 5 with respect to the convex portion 34 of the case 3.

As described above, the fixing portion 32 is located on the inlet side 35 and the outlet side 36 in each of the insertable directions when assembling the bracket 5, and is independent so as to sandwich the convex portion 34 for preventing disconnection. The divided and fixed portion 320 is arranged. The pressing portion 33 of each split fixing portion 320 extends to another adjacent split fixing portion 320, and two claws forming a gap for inserting the bracket 5 from the other split fixing portion 320. It has a unit 331.

A total of four divided fixing portions 320 are arranged on the mounting surface 30 so as to be point-finished at 90 degrees. As a result, the bracket 5 can be inserted into the fixing portion 32 from the above-mentioned four directions and fixed to the case 3. Therefore, in this embodiment, various mounting arrangements can be supported by using the common case 3 and the common bracket 5.

In this embodiment, as described above, the pair of the claw portions 331 facing each other forms a fixing structure for fixing the bracket 5 to the case 3. The bracket 5 is fixed to the case 3 by a fixing structure at a plurality of locations sandwiching the predetermined point C. That is, the bracket 5 is fixed to the case 3 by a plurality of fixing structures that are lined up in the same direction (on the same axis) across a predetermined point C.

The pull-out prevention convex portion 34 is provided on the mounting surface 30 so that it can be commonly used in any of the four bracket insertable directions. In this embodiment, the convex portion 34 is installed at the center of the fixed portion 32. In this embodiment, the convex portion 34 is provided at the center of gravity C of the mounting surface 30 in order to match the center of the fixed portion 32 with the center of gravity C of the mounting surface 30. By aligning the center of the fixed portion 32 with the center of gravity of the mounting surface 30, it is possible to suppress the case 3 from rotating or vibrating. However, a configuration in which the center of the fixing portion 32 and the center of gravity of the mounting surface 30 do not match is also included in the scope of the present invention. In that case, since the convex portion 34 is provided at the center of the fixed portion 32, the convex portion 34 deviates from the center of gravity C of the mounting surface 30. In the figure, since the case where the center of gravity C and the convex portion 34 coincide with each other is shown, it is expressed as reference numeral 34 (C).

Providing the convex portion 34 at the center of the fixing portion 32 means, in other words, one fixing structure including a pair of facing claw portions 331, a receiving portion 332, and a positioning portion 333, and the other fixing having the same configuration. It means that the convex portion 34 is provided in the middle of the structure. As shown in FIG. 4, the bracket 5 is fixed to the case 3 by a plurality of fixing structures separated in the insertion direction, and is retained by the engagement between the convex portion 34 and the hole portion 51.

5 and 7 are enlarged cross-sectional views when the bracket 5 is attached to the fixing portion 32. As a further good example, as shown in FIGS. 6 and 7, the case 3 is provided with a guide portion 39 located on the insertion side (entrance side 35), in other words, on the pressing portion 33 side, with respect to the convex portion 34. ing. The guide portion 39 supports the convex portion 34 to be fitted into the hole portion 51.

As shown in FIGS. 6 and 7, a guide portion 53 is provided in the vicinity of the hole portion 51 of the relief portion 55 corresponding to the guide portion 39 provided in the convex portion 34.

As shown in FIG. 5, a tapered portion 52 is formed at the insertion-side tip of the bracket 5. The tapered portion 52 is formed in a shape that matches the tapered portion 334 provided at the entrance portion of the fixed portion 32 of the case 3, facilitating the insertion of the bracket 5 into the fixed portion 32.

A device mounting portion 56 is formed on the base end side of the bracket 5, and the electronic control unit CU is fixed to the vehicle body by screwing the device mounting portion 56 to the vehicle body or the like. In this embodiment, the case where the electronic control unit CU is fixed by the so-called cantilever is shown, but as in the embodiment described later, the electronic control unit can be fixed in the vehicle body by the so-called double-sided operation.

According to the present embodiment configured as described above, it is possible to secure the degree of freedom in the mounting arrangement of the electronic control unit without preparing various types of cases and mounting brackets, and it is possible to firmly mount the electronic control unit.

Further, according to this embodiment, since the number of parts for mounting can be reduced and various mounting arrangements can be realized, mounting portions having various shapes (attached portions having various shapes while suppressing an increase in manufacturing cost, inventory management cost, etc.) It can be applied to the vehicle body, etc., improving usability.

Note that FIG. 1 shows a case where the positions of the divided fixing portions 320 constituting the fixing portion 32 correspond to the four corners of the mounting surface 30, but instead of this, is the rhombus arranged inside the square? As shown above, the position of the split fixing portion 320 and the four corners of the mounting surface 30 may be shifted.

Further, in this embodiment, the fixing portion 32 is composed of a plurality of divided fixing portions 320, and the bracket 5 is pressed from both sides in the width direction by a pair of facing claw portions 331. Therefore, as shown by dotted arrows in FIG. When the bracket 5 is inserted into the fixing portion 32, the claw portion 331 can be deformed upward. As a result, the time and effort required to insert the bracket 5 can be reduced, and the workability of the assembly work can be improved.

The second embodiment will be described with reference to FIG. In each of the following examples including this embodiment, the differences from the first embodiment will be mainly described. In the electronic control unit CUa of this embodiment, the split fixing portion 320a constituting the fixing portion 32a is arranged on the mounting surface 30 of the case 3a along the circumference.

In the fixing portion 32a, a total of six divided fixing portions 320a having the same shape are arranged on the mounting surface 30 with the center of gravity C of the mounting surface 30 as an axis and separated by 60 degrees in the circumferential direction. Each of the divided fixing portions 320a includes a supporting portion 321a and a pressing portion 33a provided on the upper side of the supporting portion 321a, and the pressing portion 33a has an arc shape from the supporting portion 321a toward both sides along the circumference. It has a claw portion 331a extending to. Since the fixing method is the same as that in the first embodiment, duplicate explanations will be omitted.

By arranging the split fixing portions 320a apart on the circumference as in this embodiment, the number of directions in which the bracket 5 can be inserted (6 directions in the example of FIG. 8) can be increased. According to the present embodiment, the degree of freedom of insertion of the bracket 5 can be increased as compared with the first embodiment, so that the usability is improved. The number of split fixing portions 320a is not limited to six. It may be provided in an even number of 8 or more.

The third embodiment will be described with reference to FIG. In this embodiment, the relationship between the convex portion 34 for preventing disconnection and the bracket 5 is not common to all the bracket insertable directions, but is different depending on the bracket insertable direction.

In the electronic control unit CUb of this embodiment, the case 3b is a common component. On the other hand, the bracket 5 has a hole 51 and a recess 55 formed so as to correspond to the respective insertion directions.

The convex portion 34b is formed at a position deviated from the center of gravity C of the mounting surface 30, that is, a position deviated from the center of the fixed portion 32b. Therefore, the hole 51 for engaging with the convex portion 34b and the concave portion 55 for guiding the convex portion 34b to the hole 51 are formed off the center in the width direction of the bracket 5.

As shown in FIG. 9, in the bracket 5b (1) inserted from the −X direction and the bracket 5b (2) inserted from the X direction, the forming positions of the hole 51 and the recess 55 sandwich the X axis. It is line symmetric. Although not shown, the brackets inserted from the −Y direction and the brackets inserted from the Y direction also have a line-symmetrical arrangement of the holes 51 and the recesses 55 with the Y axis in between.

In this embodiment configured in this way, the case 3b is used as a common part, while the bracket 5 is different for each insertion direction, so that the bracket 5 is prevented from being inserted into the fixing portion 32b from the wrong direction, and the bracket Damage to 5 and case 3 can be suppressed.

Since the case 3 can be shared in this embodiment as well, the cost of the electronic control unit CUb can be reduced. Further, in the present embodiment, since the shape of the bracket 5 is changed for each insertion direction, it is possible to suppress an error in the assembling work and improve the reliability. This embodiment can be applied to any of the first and second embodiments.

A fourth embodiment will be described with reference to FIG. In the electronic control unit CUc of this embodiment, the fixing portion 32c is configured as one component. In other words, the fixing portion 32c of the present embodiment may be expressed as being formed by extending each claw portion 331 of each of the divided fixing portions 320 described in FIG. 1 until it comes into contact with other adjacent claw portions. it can. Further, in other words, the fixed portion 32c of the present embodiment is a support portion that supports the holding portion 33c formed in a rectangular corridor shape and the four corners of the rectangular corridor-shaped holding portion 33c on the mounting surface 30 of the case 3c. It is provided with 321c, and a tunnel-shaped claw portion 331c is formed between the support portions 321c.

The present embodiment configured in this way also has the same action and effect as the first embodiment. Further, in this embodiment, since the fixing portion 32c is configured as one component, the strength is higher and the reliability is improved as compared with the case where the fixing portion 32c is composed of a plurality of divided fixing portions 320. This embodiment can be applied to any of the first to third embodiments.

A fifth embodiment will be described with reference to FIG. The electronic control unit CUd of this embodiment presses the bracket 5 from one side in the width direction toward the case 3.

The fixing portion 32d of this embodiment includes four divided fixing portions 320d. Each split fixing portion 320d includes a support portion 321d and a pressing portion 33d extending from the upper side of the support portion 321d in parallel with the mounting surface 30. The pressing portion 33d is formed with a claw portion 331d for pressing the bracket 5.

In this embodiment, the bracket 5 is fixed to the case 3 from one side in the width direction by the pressing portion 33d at a plurality of predetermined locations sandwiching the center of gravity C.

The present embodiment configured in this way also has the same action and effect as the first embodiment. In this embodiment, the base end side of the holding portion 33d is supported by the support portion 321d, and the tip end side thereof is a free end, so that the holding portion 33d is easily elastically deformed upward when the bracket is inserted. Therefore, the efficiency of the bracket mounting work can be improved. Further, in this embodiment, since the size can be reduced as compared with the first embodiment, it is possible to cope with a relatively small electronic control device. This embodiment can be applied to any of the first to fourth embodiments.

A sixth embodiment will be described with reference to FIG. In the electronic control unit CUe of the present embodiment, the bracket 5e is fixed to the case 3e by forming a slit 54 in the central portion in the width direction of the bracket 5e and allowing the support portion 321e of the split fixing portion 320e to enter the slit 54. In this embodiment, the fixing structure by fitting the convex portion 34 and the hole portion 51 is not provided.

The fixing portion 32e includes a plurality of divided fixing portions 320e arranged so as to correspond to the four sides of the rectangular mounting surface 30. Each split fixing portion 320e includes a support portion 321e erected on the mounting surface 30 and a pressing portion 33e provided on the upper side of the support portion 321e. Each holding portion 33e has a claw portion 331e extending horizontally along the side of the mounting surface 30.

The bracket 5e is inserted into the fixing portion 33e so that the pair of supporting portions 321e facing each other enter the slit 54. As a result, the leg portions 501 located on the left and right sides of the slit 54 of the bracket 5e are respectively pressed by the corresponding claw portions 331e and fixed to the case 3e.

The present embodiment configured in this way also has the same action and effect as the first embodiment. Further, in this embodiment, since the fixing portion 32e can be made smaller than that in the first embodiment, it is possible to cope with a relatively small electronic control unit CUe. This embodiment can be applied to any of the first to fifth embodiments.

FIG. 13 is a modified example of the sixth embodiment. In the electronic control unit CUf of the present modification, each division and fixing portion 320f is configured to include a support portion 321f and a pressing portion 33f provided on the upper side of the support portion 321f. The pressing portion 33f has a claw portion 331f extending in only one direction, and only one leg 501 of the bracket 5f divided by the slit 54 is pressed against the case 3f to be fixed.

That is, in this modification, the pair of divided fixing portions 320f facing each other fix the leg portions 501 of the bracket 5f divided by the slit 54 one by one. As a result, each leg 501 of the bracket 5f is fixed by the corresponding split fixing portion 320f in a cantilever support system. This modified example configured in this way also has the same effect as that of the sixth embodiment.

A seventh embodiment will be described with reference to FIG. In the electronic control unit CUg of this embodiment, the first device mounting portion 56g1 is provided on the tip end side of the bracket 5g, and the second device mounting portion 56g2 is provided on the base end side of the bracket 5g. The first device mounting portion 56g1 and the second device mounting portion 56g2 are connected by a case mounting portion 58. A hole 51 and a recess 55 are formed in the case mounting portion 58.

Further, the first device mounting portion 56g1 and the case mounting portion 58 are connected via a connecting portion 571 having a small width dimension. The width dimension of the connecting portion 571 is set to be equal to or less than the dimension of the gap (the gap between the inlet side 35 and the outlet side 36) formed by the claw portions 331 of the opposing split fixing portions 320 facing each other. A step is formed between the first device mounting portion 56g1 and the case mounting portion 58 by the connecting portion 571.

When attaching the bracket 5g to the fixing portion 32, the connecting portion 571 is inserted into the gap between the divided fixing portions 320, and the convex portion 34 of the case 3 is fitted into the hole portion 51 of the bracket 5g. As a result, the bracket 5g is fixed to the fixing portion 32. Then, by fixing each device mounting portion 56g1 and 56g2 to the mounted portion of the vehicle body or the like with screws or the like, the electronic control unit CUg can be mounted.

The present embodiment configured in this way also has the same action and effect as the first embodiment. Further, in this embodiment, since the device mounting portions 56g1, 56g2 are formed on both ends of the bracket 5g, the electronic control unit CUg can be fixed to the vehicle body or the like by the double-sided support method, and the electronic control device can be subjected to rotational force It is possible to suppress the addition of twists and the like. This embodiment can be applied to any of the first to sixth embodiments.

FIG. 15 shows an electronic control unit CUg2 according to a modified example of the seventh embodiment. In this modification, a step is also formed between the device mounting portion 56g2 on the bracket base end side and the case mounting portion 58. As a result, the degree of freedom in mounting the electronic control unit CUg2 can be further increased.

Although the embodiment of the electronic control unit according to the present invention has been described in detail above, the present invention is not limited to each of the above embodiments and does not deviate from the spirit of the present invention described in the claims. Therefore, various design changes can be made.

Each of the above-described embodiments has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to those having all the described configurations. It is also possible to replace a part of the configuration of one embodiment with the configuration of another embodiment. It is also possible to add the configuration of another embodiment to the configuration of one embodiment. In addition, other configurations may be added, deleted, or replaced with respect to a part of the configurations of each embodiment.

Further, the technical features included in each of the above-described examples are not limited to the combinations specified in the claims, and can be appropriately combined.

Further, the technical idea obtained from each of the above-described embodiments can be expressed as follows, for example.

(Expression 1)
A case for accommodating a circuit board and a bracket for being inserted and fixed in a fixing portion provided in the case are provided.
The fixing portion is provided on the mounting surface of the case.
The fixing portion is formed so that the bracket can be inserted by extending from the center of the case from a direction parallel to the mounting surface, and can be inserted from four or more directions. A control device for automobiles that has a slender shape and the fixing portion fixes the bracket at at least two points on the insertion side and the extension side.

(Expression 2)
The automobile control device according to Expression 1, wherein the fixing portion provided in the case is provided with a plurality of shapes corresponding to one direction rotationally symmetrically.

(Expression 3)
The case has a convex portion formed on the mounting surface side, and the bracket has a hole portion corresponding to the convex portion.
The automobile control device according to Expression 1, wherein the convex portion is included in the hole when the bracket is fixed to the case.

(Expression 4)
The automobile control device according to Expression 3, wherein the convex portion is provided at the center of rotation of the fixed portion.

(Expression 5)
The automobile control device according to Expression 3, wherein the convex portion is provided at a position deviated from the rotation center of the fixed portion.

(Expression 6)
The control device for an automobile according to any one of Expressions 1 to 5, wherein the bracket has a convex relief portion of a case on the tip end side of the hole portion.

(Expression 7)
The control device for an automobile according to any one of Expressions 1 to 6, wherein the escape portion of the bracket has a guide portion so as to easily ride on the convex portion in the vicinity of the hole portion.

(Expression 8)
The description according to any one of Expressions 1 to 7, wherein the case is provided with a guide portion having a shape in which the insertion side is inclined so that the bracket can easily ride on the insertion entrance side of the fixed portion rather than the convex portion. Control device for automobiles.

(Expression 9)
The control device for an automobile according to any one of Expressions 1 to 8, wherein a taper is provided at the tip of the bracket on the insertion side to facilitate insertion.

(Expression 10)
The control device for an automobile according to any one of Expressions 1 to 9, which has a tapered portion on the insertion side of the bracket of the fixing portion of the case so that the bracket can be easily inserted.

(Expression 11)
The bracket is provided with a fixing portion to the case and a fixing portion for fixing the control device at both ends, and a step is provided at least on the extension side between the fixing portion with the case and the fixing portion of the control device. The automobile control device according to any one of Expressions 1 to 10, wherein the connecting portion between the control device mounting portion and the case is configured such that the width of the connecting portion is partially or wholly smaller than the bracket width. ..

(Expression 12)
The fixing portion is described in any one of Expressions 1 to 11 in which L-shaped fixing limbs are paired to form one fixing portion, and the fixing portions are configured to fix the bracket in two pairs. Automotive control device.

(Expression 13)
The fixing portion is described in any one of representations 1 to 11 in which one L-shaped fixing limb forms one fixing portion, and the fixing portions are configured to fix the bracket in two pairs. Automotive control device.

(Expression 14)
The fixing portion is described in any one of Expressions 1 to 11, wherein the fixing portion forms one fixing portion by one tunnel-shaped fixing limb, and the fixing portions are configured to fix the bracket in two pairs. Control device for automobiles.

(Expression 15)
The control device for an automobile according to any one of Expressions 1 to 9, wherein the fixing portion is installed within the width of the bracket, and a notch corresponding to the fixing portion is provided on the bracket side to fix the bracket. ..

(Expression 16)
The automobile control device according to any one of Expressions 1 to 15, wherein the fixing portion is configured such that a contact portion for holding the bracket is formed in a convex shape on the bracket side.

(Expression 17)
The description according to any one of Expressions 1 to 16, wherein the bracket width or the notch width and a step for ensuring a minute clearance are provided near the connection portion of the fixing portion with the case so as to fix the bracket. Control device for automobiles.

(Expression 18)
The automobile control device according to any one of Expressions 1 to 17, wherein ribs are installed on the inner surface side of the surface on which the fixing portion of the case is installed to suppress deformation of the case.

(Expression 19)
The automobile according to any one of Expressions 1 to 18, which is configured such that a component to be electrically protected such as static electricity is arranged on a substrate in the same area as the area where the bracket is inserted from multiple directions. Control device.

1: Circuit board, 2: Connector, 3: Case, 4: Cover, 5: Mounting bracket, 32: Fixed part, 33: Holding part, 34: Convex part, 35, 36: Gap, 51: Hole part, 55: Relief part, 56: Device mounting part, 320: Split fixing part, 321: Support part, 331: Claw part, CU: Electronic control device

Claims (15)

An electronic control unit including a case for accommodating a circuit board and a mounting bracket for mounting the case.
Wherein the mounting surface with the casing, and the convex portion, and said mounting bracket and a fixing portion for fixing to the casing at a plurality of positions facing is provided across a predetermined point of the mounting surface,
The mounting bracket is provided with a hole that engages with the convex portion when the mounting bracket is fixed by the fixing portion.
On the tip end side of the mounting bracket, a concave portion for guiding the convex portion to the hole portion is formed in the longitudinal direction up to the vicinity of the hole portion.
The fixing portion is fixed by inserting the mounting bracket from any one of a plurality of predetermined directions.
Electronic control unit. The predetermined plurality of directions are directions parallel to the mounting surface and are set to be rotationally symmetric with respect to a normal passing through the predetermined point.
The electronic control unit according to claim 1. The predetermined point is the center of gravity of the mounting surface.
The electronic control unit according to claim 2 . A part of the fixing portion is located on the back side of the convex portion in the direction in which the tip of the mounting bracket is inserted.
At the end of the concave portion, a guide portion for contacting the convex portion and riding on the convex portion after the mounting bracket is inserted into a part of the fixing portion is provided.
The electronic control unit according to claim 1 . The fixing portion has a holding portion that covers the mounting bracket from above at a plurality of locations facing each other across the predetermined point in each predetermined direction.
The electronic control unit according to any one of claims 1 to 4 . The holding portion covers the mounting bracket from both sides in the width direction of the mounting bracket.
The electronic control unit according to claim 5 . When the mounting bracket is inserted, the holding portion elastically deforms in a direction substantially parallel to the normal line passing through the predetermined point.
The electronic control unit according to claim 6 . The case is formed with ribs located on the back side of the mounting surface to suppress deformation of the mounting surface.
The electronic control unit according to any one of claims 1 to 4 . A device mounting portion for mounting to the mounted portion is formed on the base end side of the mounting bracket.
The area from the tip end side to the base end side of the mounting bracket is a case mounting portion for mounting the mounting bracket to the case.
The device mounting portion and the case mounting portion have a step.
The electronic control unit according to any one of claims 1 to 4 . The fixing portion is composed of a plurality of divided fixing portions provided at positions corresponding to the plurality of locations facing each other across the predetermined point on the mounting surface.
Each of the divided fixing portions includes a support portion that is erected on the mounting surface at positions corresponding to the plurality of locations, and a pressing portion that extends from the upper side of the support portion in a direction parallel to the width direction of the mounting bracket. Is equipped with
A device mounting portion for mounting to the mounted portion is formed on the base end side of the mounting bracket.
A slit portion extending in the longitudinal direction is formed in the region from the tip end side of the mounting bracket to the device mounting portion.
The mounting bracket is fixed to the case by inserting the supporting portions facing each other across the predetermined point into the slit portion.
The electronic control unit according to claim 1. The mounting bracket
The first device mounting part for mounting to the mounted part, which is located on the tip side in the longitudinal direction,
A second device mounting portion for mounting to the mounted portion, which is located on the base end side in the longitudinal direction, and
A case mounting portion provided by connecting the first device mounting portion and the second device mounting portion and fixing the mounting bracket to the case, and a case mounting portion.
The hole provided in the case mounting portion and
The recess provided in the case mounting portion and
Is equipped with
The case mounting portion and the first device mounting portion are connected by a connecting portion narrower than the case mounting portion and the first device mounting portion, and the case mounting portion and the first device mounting portion are connected to each other. A step is formed by the connecting portion.
The electronic control unit according to claim 1 . The fixing portion is divided and fixed so as to sandwich the plurality of facing points across the predetermined point on the mounting surface and are arranged in directions orthogonal to the direction in which the mounting bracket is inserted. It is composed of parts
Each of the split fixing portions includes a support portion erected on the mounting surface and a plurality of holding portions extending from the upper side of the support portion toward other split fixing portions adjacent in different directions.
The connecting portion is inserted into a gap formed by the pressing portions of the divided and fixed portions adjacent to each other facing each other.
The electronic control unit according to claim 11 . The fixing portion is divided and fixed so as to sandwich the plurality of facing points across the predetermined point on the mounting surface and are arranged in directions orthogonal to the direction in which the mounting bracket is inserted. It is composed of parts
Each of the split fixing portions includes a support portion erected on the mounting surface and a plurality of holding portions extending from the upper side of the support portion toward other split fixing portions adjacent in different directions.
The recess is inserted into a gap formed by the pressing portions of the divided and fixed portions adjacent to each other facing each other.
The electronic control unit according to claim 1 . An electronic control unit including a case for accommodating a circuit board and a mounting bracket for mounting the case.
The mounting surface of the case is provided with fixing portions for fixing the mounting bracket to the case at a plurality of facing points across a predetermined point on the mounting surface.
The fixing portion is fixed by inserting the mounting bracket from any one of a plurality of predetermined directions, and at a position corresponding to the plurality of facing locations across the predetermined points on the mounting surface. It is composed of a plurality of divided and fixed parts provided.
Each of the divided fixing portions includes a support portion that is erected on the mounting surface at positions corresponding to the plurality of locations, and a pressing portion that extends from the upper side of the support portion in a direction parallel to the width direction of the mounting bracket. Is equipped with
A device mounting portion for mounting to the mounted portion is formed on the base end side of the mounting bracket.
A slit portion extending in the longitudinal direction is formed in the region from the tip end side of the mounting bracket to the device mounting portion.
An electronic control device in which the mounting bracket is fixed to the case by inserting the supporting portions facing each other across the predetermined point into the slit portion. An electronic control unit including a case for accommodating a circuit board and a mounting bracket for mounting the case.
The mounting surface of the case is provided with a convex portion and a fixing portion for fixing the mounting bracket to the case at a plurality of facing points across a predetermined point on the mounting surface.
The mounting bracket is provided with a hole corresponding to the convex portion.
On the tip end side of the mounting bracket, a concave portion for guiding the convex portion to the hole portion is formed in the longitudinal direction up to the vicinity of the hole portion.
The fixing portion is fixed by inserting the mounting bracket from any one of a plurality of predetermined directions.
The mounting bracket
The first device mounting part for mounting to the mounted part, which is located on the tip side in the longitudinal direction,
A second device mounting portion for mounting to the mounted portion, which is located on the base end side in the longitudinal direction, and
A case mounting portion provided by connecting the first device mounting portion and the second device mounting portion and fixing the mounting bracket to the case, and a case mounting portion.
The hole provided in the case mounting portion and
The recess provided in the case mounting portion and
Is equipped with
The case mounting portion and the first device mounting portion are connected by a connecting portion narrower than the case mounting portion and the first device mounting portion, and the case mounting portion and the first device mounting portion are connected to each other. An electronic control device in which a step is formed by the connecting portion.

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