JPWO2019026482A1 - Electronic control unit - Google Patents

Abstract

To provide an electronic control device that can be mounted while ensuring the degree of freedom of mounting arrangement and can suppress an increase in manufacturing cost. In the electronic control device including the case 3 for housing the circuit board 1 and the mounting bracket 5 for mounting the case 3, the mounting surface 30 of the case 3 has the mounting bracket 5 straddling a predetermined point C of the mounting surface 30. The fixing portion 32 for fixing to the case 3 is provided at a plurality of locations opposed to each other, and the fixing portion 32 is fixed by inserting the mounting bracket 5 from any one of a plurality of predetermined directions.

Description

  The present invention relates to an electronic control device.

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

JP, 2013-233914, A JP, 2013-041863, A

  According to Patent Documents 1 and 2, the bracket attachment portion is prepared on a plurality of surfaces of the control device. In this conventional structure, since the brackets are fixed by a plurality of combinations, there is a tendency to impede or limit the standardization of the control device and the bracket, resulting in an increase in the cost of the control device itself.

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

  In order to solve the above problems, an electronic control device according to the present invention is an electronic control device including a case that accommodates a circuit board and a mounting bracket for mounting the case, and the mounting surface of the case has a mounting bracket. A fixing part is provided to fix the to the case at a plurality of points facing each other across a predetermined point on the mounting surface, and the fixing part is fixed by inserting the mounting bracket from any one of a plurality of predetermined 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 bracket is attached to the case at a plurality of positions facing each other across a predetermined point on the mounting surface. Fixed. Accordingly, the electronic control device can be attached to the attached portion with a high degree of freedom by the attachment bracket.

The exploded perspective view of the electronic control unit concerning the 1st example. The perspective view which expands and shows a case. The front view which expands and shows a split fixing|fixed part. FIG. 3 is a perspective view showing a state in which a mounting bracket is attached to a case. Sectional drawing which expands and shows a mode that a mounting bracket is penetrated to a fixed part. Sectional drawing which shows a mode that a convex part approaches a hole. Sectional drawing which shows the state which the convex part engaged with the hole part. The perspective view of the electronic control unit which concerns on a 2nd Example. The top view of the electronic control unit which concerns on 3rd Example. The perspective view of the electronic control unit concerning a 4th example. The perspective view of the electronic control unit concerning a 5th example. The perspective view of the electronic control unit concerning a 6th example. The perspective view of the electronic control unit concerning a modification. The perspective view of the electronic control unit concerning a 7th example. The perspective view of the electronic control unit concerning 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 unit CU that accommodates a driving support system, an automatic transmission control system, a power steering control system, a 4WD control system, a seat belt control system, and the like used for an automobile will be described. The electronic control unit CU of this embodiment can be mounted on the vehicle body with high reliability and freedom and at low cost.

  In the present embodiment, in the case 3 formed in the shape of a bottomed rectangular tube for housing the circuit board 1, a fixing portion 32 for the mounting bracket 5 is prepared on one surface 30 of the case 3. The fixing portion 32 is configured to fix the mounting bracket 5 both on the insertion side and on the opposite side extending from the center of the case. The fixing portion 32 has a protrusion 34 for positioning the mounting bracket 5 after insertion and for preventing the mounting bracket 5 from coming off. Hereinafter, the mounting bracket 5 may be abbreviated as the bracket 5.

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

  An example of the shape of the fixing portion 32 will be given. The fixed part 32 can be configured by, for example, four or more divided fixed parts 320. The fixing portion 32 may be configured as a single fixing portion without being divided.

  For example, each of the divided fixing portions 320 is arranged in a total of four, with the center of gravity of the mounting surface 30 as the central axis and being separated by 90 degrees. Each split fixing part 320 includes a support part 321 standing on the mounting surface 30, and a holding part 33 extending from the support part 321 in parallel with the mounting surface 30. The pressing portion 33 has a plurality of claw portions 331 that extend in different directions. Each pressing portion 33 has, for example, two claw portions 331 whose directions are different by 90 degrees on the same plane.

  In this embodiment, the claw portions 331 of the divided fixed portions 320 facing each other form the gaps 35 and 36 that are 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, the bracket 5 is inserted in parallel to the surface 30 on which the fixing portion 32 is provided, so that the split fixing portions 320 having the holding portions 33 are 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 that presses the bracket 5, and a surface 332 that contacts the bracket 5 is formed on the tip side.

  In an 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 at intervals of 90 degrees. That is, in this 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 (attachment method) of the bracket 5 corresponds to “a predetermined plurality of directions”.

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

  Further, the hole portion 51 formed in the bracket 5 is further firmly fixed by engaging with the protrusion portion 34 (also referred to as the protrusion portion 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 on which the bracket fixing portion 32 is installed and are spaced apart in parallel. 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.

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

  According to this embodiment configured in this way, 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 the attached portion such as the 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 positions set across a predetermined point (for example, the center of gravity) of the mounting surface 30, so that the case 3 is mounted on the vehicle body or the like. Can be firmly attached to.

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

  An embodiment will be described with reference to FIGS. FIG. 1 is 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 seen obliquely from below. FIG. 3 is an enlarged front view showing the split fixing part 320. FIG. 4 is a perspective view of the electronic control unit CU in an assembled state.

  The electronic control unit CU includes, for example, a circuit board 1, a case 3 that accommodates the circuit board 1, a cover 4 that covers the opening 31 of the case 3, and a bracket 5 that attaches 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 rectangular tube shape, and the circuit board 1 is inserted through the opening 31 and assembled in 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 through 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 is mounted in the case 3.

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

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

  Specifically, the fixing portion 32 sandwiches a plurality of opposing portions across the predetermined point C (center of gravity) of the mounting surface 30 and inserts the bracket 5 in the directions (−X direction, X direction, −Y direction, Y). One of the directions) and a plurality of split fixing parts 320 arranged in the direction orthogonal to each other on the same plane.

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

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

  The pressing portions 33 of the respective divided fixing portions 320 that are adjacent to each other face each other to form gaps 35 and 36 into which the bracket 5 is inserted and fixed. In FIG. 1, only the gaps 35 and 36 in the X-axis direction are labeled, but similar gaps are formed in the Y-axis direction. Further, depending on which direction the bracket 5 is inserted, which of the facing gaps is the inlet side gap and which is the outlet side gap is determined.

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

  Further, a positioning portion 333 that determines the position of the bracket 5 in the width direction is provided near the base of the support portion 321 that fixes the pressing portion 33 to the case. The positioning portion 333 can also regulate the position in the direction (width direction of the bracket) orthogonal to the insertion direction of the bracket 5 on the same plane.

  Returning to FIG. The attachment surface 30 of the case 3 is provided with a removal preventing convex portion 34 for preventing the bracket 5 from coming off. Hereinafter, it may be abbreviated as the convex portion 34. The bracket 5 has a hole 51 corresponding to the protrusion 34. When the convex portion 34 enters the hole portion 51 and is fitted therein, the bracket 5 is prevented from being engaged with the case 3 and coming off.

  As shown in FIG. 2, a plurality of ribs 38 are provided on the inner surface of the case 3 where the fixing portion 32 is installed, that is, on the back surface of the mounting surface 30, so as to suppress the warpage of the case 3. The ribs 38 enhance the rigidity of the mounting surface 30 and maintain the flatness. The rib 38 can also be referred to as a warpage suppressing portion 37. The sled holding portion 37 may have any structure as long as it can maintain 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 suppress the protrusion 34 from coming off the hole 51.

  Return to FIG. 1 again. The bracket 5 is formed with an escape portion 55 that is located closer to the distal end side in the insertion direction than the hole portion 51 and prevents the bracket 5 from interfering with the convex portion 34. The escape portion 55 is formed according to the shape of the convex portion 34. When viewed from the upper side of FIG. 1, the escape portion 55 slightly protrudes upward. The escape 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 escape portion 55 has a function of guiding the bracket 5 during insertion and a function of guiding the convex portion 34 to the hole portion 51. That is, when the bracket 5 is inserted into the fixing portion 32, the escape portion 55 is installed in the gap between the pressing portions 33 so as to facilitate the insertion, and guides the insertion. Further, the escape 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 portions 32 are respectively positioned on the inlet side 35 and the outlet side 36 of each of the insertable directions when the bracket 5 is assembled, and the fixing portions 32 are independent so as to sandwich the pull-out preventing convex portion 34. The divided fixing part 320 is arranged. The holding part 33 of each split fixing part 320 extends to another adjacent split fixing part 320, and two claws which form a gap for allowing the bracket 5 to be inserted between the other split fixing part 320. It has a part 331.

  A total of four split fixing parts 320 are arranged on the mounting surface 30 so as to be a 90-degree point target. Accordingly, 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, by using the common case 3 and the common bracket 5, various mounting arrangements can be dealt with.

  In the present embodiment, as described above, the pair of the facing claw portions 331 form 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 arranged in the same direction (on the same axis) across the predetermined point C.

  The removal preventing convex portion 34 is provided on the mounting surface 30 so that it can be commonly used in any of the four bracket insertion directions. In this embodiment, the convex portion 34 is installed at the center of the fixed portion 32. In the present embodiment, the protrusion 34 is provided at the center of gravity C of the mounting surface 30 so that the center of the fixed portion 32 and the center of gravity C of the mounting surface 30 coincide with each other. Since the center of the fixed portion 32 and the center of gravity of the mounting surface 30 coincide with each other, it is possible to prevent the case 3 from rotating or vibrating. However, a configuration in which the center of the fixed portion 32 and the center of gravity of the mounting surface 30 do not coincide 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 fixing portion 32, it is displaced 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, the reference numeral 34(C) is used.

  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 structure configured similarly. This 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 that are separated from each other in the insertion direction, and the bracket 5 is prevented from coming off by the engagement of the convex portion 34 and the hole portion 51.

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

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

  As shown in FIG. 5, a tapered portion 52 is formed at the tip of the bracket 5 on the insertion side. The tapered portion 52 is formed in a shape matching the tapered portion 334 provided at the entrance of the fixed portion 32 of the case 3, and facilitates insertion of the bracket 5 into the fixed portion 32.

  A device attachment portion 56 is formed on the base end side of the bracket 5, and the device attachment portion 56 is screwed to the vehicle body or the like to fix the electronic control unit CU to the vehicle body. In this embodiment, a case where the electronic control unit CU is fixed by a so-called cantilever is shown, but the electronic control unit can be fixed in the vehicle body by a so-called both-end support as in an embodiment described later.

  According to the present embodiment configured as described above, the degree of freedom in the mounting arrangement of the electronic control device can be secured and the solid mounting can be performed without preparing various types of cases and mounting brackets.

  Further, according to the present embodiment, since the number of parts for mounting can be reduced and various mounting arrangements can be realized, the mounted parts of various shapes (while suppressing the increase of manufacturing cost, inventory management cost, etc.) It can be applied to the vehicle body, etc.) and the usability is improved.

  Although FIG. 1 shows the case where the positions of the respective divided fixing portions 320 that form the fixing portion 32 and the four corners of the mounting surface 30 are made to correspond to each other, instead of this, do the diamonds be arranged inside the square? As described above, the position of the split fixing portion 320 and the four corners of the mounting surface 30 may be shifted.

  Furthermore, in the present embodiment, the fixing portion 32 is composed of a plurality of divided fixing portions 320, and the pair of facing claw portions 331 presses the bracket 5 from both sides in the width direction. Therefore, as shown by a dotted arrow in FIG. The claw portion 331 can be deformed upward when the bracket 5 is inserted into the fixing portion 32. As a result, the labor of inserting the bracket 5 can be reduced, and the workability of the assembling work can be improved.

  A second embodiment will be described with reference to FIG. In each of the following embodiments including this embodiment, differences from the first embodiment will be mainly described. In the electronic control unit CUa of the present embodiment, the split fixing portions 320a that form the fixing portions 32a are arranged on the mounting surface 30 of the case 3a along the circumference.

  The fixing portion 32a arranges a total of six divided fixing portions 320a having the same shape on the mounting surface 30 with 60 degrees circumferentially spaced about the center of gravity C of the mounting surface 30 as an axis. Each of the split fixing parts 320a includes a support part 321a and a holding part 33a provided on the upper side of the support part 321a, and the holding part 33a has an arc shape from the support part 321a toward both sides along the circumference. It has a claw portion 331a extending to the. Since the fixing method is the same as that of the first embodiment, the duplicate description will be omitted.

  By disposing the split fixing portions 320a on the circumference as in the present embodiment, the number of directions in which the bracket 5 can be inserted (six directions in the example of FIG. 8) can be increased. According to the present embodiment, the degree of freedom in inserting the bracket 5 can be increased more than that in the first embodiment, so that the usability is improved. Note that the number of the split fixing parts 320a is not limited to six. You may provide with an even number of eight or more.

  A third embodiment will be described with reference to FIG. In this embodiment, the relationship between the pull-out preventing convex portion 34 and the bracket 5 is not made common to all the bracket insertable directions, but differs 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 is formed with the hole 51 and the recess 55 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, at a position deviated from the center of the fixed portion 32b. Therefore, the hole 51 for engaging the protrusion 34b and the recess 55 for guiding the protrusion 34b to the hole 51 are formed off the center of the bracket 5 in the width direction.

  As shown in FIG. 9, in the bracket 5b(1) inserted in the −X direction and the bracket 5b(2) inserted in the X direction, the formation positions of the hole portion 51 and the recessed portion 55 sandwich the X axis. It is line symmetrical. Although not shown, the brackets inserted in the −Y direction and the brackets inserted in the Y direction are also line-symmetric with respect to the arrangement of the holes 51 and the recesses 55.

  In this embodiment having such a configuration, the case 3b is used as a common component, while the bracket 5 is different in each insertion direction. Therefore, the bracket 5 is prevented from being inserted into the fixing portion 32b from the wrong direction, and It is possible to suppress damage to the casing 5 and the case 3.

  Also in this embodiment, since the case 3 can be shared, the cost of the electronic control unit CUb can be reduced. In addition, in this embodiment, since the shape of the bracket 5 is changed for each insertion direction, it is possible to suppress an error in assembly work and improve reliability. This embodiment can be applied to both 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 also be expressed as being formed by extending each claw portion 331 of each split fixing portion 320 described in FIG. 1 until it comes into contact with another adjacent claw portion. it can. In other words, in other words, the fixing portion 32c of the present embodiment includes a holding portion 33c formed in a rectangular corridor shape and a support portion that supports the four corners of the rectangular corridor holding portion 33c on the mounting surface 30 of the case 3c. 321c, and tunnel-shaped claw portions 331c are formed between the support portions 321c.

  This embodiment, which is configured in this way, also exhibits the same effects 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 the 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 the present embodiment presses the bracket 5 toward the case 3 from one side in the width direction.

  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 holding portion 33d extending from the upper side of the support portion 321d in parallel with the mounting surface 30. The holding portion 33d is formed with a claw portion 331d for holding the bracket 5.

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

  This embodiment, which is configured in this way, also exhibits the same effects as the first embodiment. In the present embodiment, the pressing portion 33d is supported on the base end side by the supporting portion 321d and the tip end side is a free end, so that it can be easily elastically deformed upward when the bracket is inserted. Therefore, the efficiency of the bracket mounting work can be improved. Furthermore, the present embodiment can be made smaller than the first embodiment, so that it can be applied to a relatively small electronic control unit. 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 the slit 54 in the central portion in the width direction of the bracket 5e and inserting the support portion 321e of the split fixing portion 320e into the slit 54. In the present 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 corresponding to the four sides of the rectangular mounting surface 30. Each of the split fixing portions 320e includes a support portion 321e that is erected on the mounting surface 30 and a holding portion 33e that is provided above the support portion 321e. Each pressing portion 33e has a claw portion 331e that extends horizontally along the side of the mounting surface 30.

  The bracket 5e is inserted into the fixing portion 33e such that the pair of supporting portions 321e facing each other enter the slit 54. As a result, the leg portions 501 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.

  This embodiment, which is configured in this way, also exhibits the same effects as the first embodiment. Further, in the present embodiment, the fixing portion 32e can be downsized as compared with the first embodiment, so that it can be applied to a relatively small electronic control unit CUe. This embodiment can be applied to any of the first to fifth embodiments.

  FIG. 13 is a modification of the sixth embodiment. In the electronic control unit CUf of the present modification, each divided fixing portion 320f is configured to include a support portion 321f and a holding portion 33f provided above the support portion 321f. The pressing portion 33f has a claw portion 331f extending only in one direction, and presses only one leg 501 of the bracket 5f divided by the slit 54 to the case 3f to fix it.

  That is, in the present modified example, the pair of facing split fixing portions 320f fix the leg portions 501 of the bracket 5f split by the slits 54 at one location. As a result, each leg portion 501 of the bracket 5f is fixed in a cantilevered manner by the corresponding split fixing portion 320f. The present modification example configured as described above also achieves the same effects as the sixth embodiment.

  A seventh embodiment will be described with reference to FIG. In the electronic control unit CUg of the present embodiment, the first device attachment portion 56g1 is provided on the tip side of the bracket 5g, and the second device attachment 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 the 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 smaller than the dimension of a gap (a gap between the inlet side 35 and the outlet side 36) formed by the claw portions 331 of the divided fixed portions 320 facing each other 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. Thereby, the bracket 5g is fixed to the fixing portion 32. Then, the electronic control unit CUg can be attached by fixing each of the device attaching portions 56g1 and 56g2 to an attached portion such as a vehicle body with a screw or the like.

  This embodiment, which is configured in this way, also exhibits the same effects as the first embodiment. Further, in the present embodiment, since the device mounting portions 56g1 and 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 system, and the electronic control unit CUg can be rotated with no 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 modification of the seventh embodiment. In this modification, a step is also formed between the device attachment portion 56g2 on the bracket base end side and the case attachment portion 58. Thereby, the degree of freedom in mounting the electronic control unit CUg2 can be further increased.

  The embodiments of the electronic control device according to the present invention have been described above in detail, but the present invention is not limited to the above-mentioned embodiments, and does not depart from the spirit of the present invention described in the claims. Therefore, various design changes can be made.

  The above-described embodiments have been described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment. Also, the configuration of another embodiment can be added to the configuration of one embodiment. Further, with respect to a part of the configuration of each embodiment, another configuration may be added, deleted, or replaced.

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

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

(Expression 1)
A case for accommodating the circuit board; and a bracket inserted and fixed to a fixing portion provided in the case,
The fixing portion is provided on the mounting surface of the case,
The fixing portion is formed such that the bracket extends from the center of the case and can be inserted in a direction parallel to the mounting surface, and the insertion direction can be inserted from four or more directions. The control device for a vehicle, which has a simple shape, and wherein the fixing portion fixes the bracket at at least two points on the insertion side and the extension side.

(Expression 2)
2. The vehicle control device according to expression 1, wherein a plurality of fixing parts provided in the case are rotationally symmetrical in shape corresponding to one direction.

(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,
2. The vehicle 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 vehicle control device according to Expression 3, wherein the convex portion is provided at a rotation center of the fixed portion.

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

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

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

(Expression 8)
8. The expression 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 get on the insertion inlet side of the fixed portion rather than the convex portion. Automotive control unit.

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

(Expression 10)
10. The vehicle control device according to any one of Expressions 1 to 9, wherein a taper portion is provided on the fixing portion of the case on the insertion side of the bracket so that the bracket can be easily inserted.

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

(Expression 12)
The said fixing|fixed part is paired with the L-shaped fixed limb, forms one fixed part, and they are comprised so that they may fix a bracket in two pairs. Automotive controller.

(Expression 13)
The fixing part forms one fixing part by one L-shaped fixing limb, and they are configured to fix the brackets in two pairs. Automotive controller.

(Expression 14)
The said fixing|fixed part forms one fixing|fixed part with one tunnel-shaped fixed limb, and they are comprised so that they may fix a bracket with two pairs. Automotive control unit.

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

(Expression 17)
17. The expression according to any one of Expressions 1 to 16, in which a bracket width or a notch width and a step for ensuring a minute clearance are provided near a connection portion of the fixing portion with the case to fix the bracket. Automotive control unit.

(Expression 18)
18. The vehicle control device according to any one of Expressions 1 to 17, wherein a rib is installed on the inner surface side of the surface of the case on which the fixing portion is installed, and the case is configured to suppress deformation of the case.

(Expression 19)
19. The automobile according to any one of Expressions 1 to 18, which is configured such that components for which electrical protection such as static electricity is desired are arranged on a substrate in the same region as a region where the brackets are overlapped when the brackets are 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: Escape part, 56: Device mounting part, 320: Divided fixing part, 321: Support part, 331: Claw part, CU: Electronic control device

Claims (15)

An electronic control device comprising: a case that accommodates a circuit board; and a mounting bracket for mounting the case,
The mounting surface of the case is provided with a fixing portion that fixes the mounting bracket to the case at a plurality of positions facing each other across a predetermined point of the mounting surface,
The said control part is an electronic control unit which fixes by fixing the said mounting bracket from any one of predetermined directions.   The electronic control device according to claim 1, wherein the predetermined plurality of directions are directions parallel to the mounting surface and are rotationally symmetrical with respect to a normal line passing through the predetermined point. The mounting surface is provided with a convex portion,
The mounting bracket is provided with a hole corresponding to the protrusion,
The electronic control unit according to claim 2, wherein the convex portion and the hole portion are engaged when the mounting bracket is fixed by the fixing portion.   The electronic control device according to claim 3, wherein the predetermined point is a center of gravity of the mounting surface.   The electronic control device according to claim 4, wherein a concave portion for guiding the convex portion to the hole portion is formed on the tip end side of the mounting bracket in the longitudinal direction up to the vicinity of the hole portion.   The electronic control device according to claim 5, wherein a guide portion is provided at a terminal end of the concave portion for abutting on the convex portion and riding on the convex portion when the mounting bracket is inserted into the fixing portion.   The said fixing|fixed part has a holding|suppressing part which covers the said mounting bracket from the upper side in the said some location which straddles the said predetermined point in each said predetermined direction, and opposes, The any one of Claims 1-6. Electronic control unit.   The electronic control device according to claim 7, wherein the pressing portion covers the mounting bracket from both sides in the width direction of the mounting bracket.   The electronic control device according to claim 8, wherein the pressing portion elastically deforms in a direction substantially parallel to the normal line passing through the predetermined point when the mounting bracket is inserted.   The electronic control device according to claim 1, wherein a rib that is located on the back side of the mounting surface and that suppresses deformation of the mounting surface is formed in the case. On the base end side of the mounting bracket, a device mounting portion for mounting to a mounted portion is formed,
A region from the tip side of the mounting bracket to the base side is a case mounting portion for mounting the mounting bracket to the case,
The electronic control device according to claim 1, wherein the device mounting portion and the case mounting portion have a step. 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 of the mounting surface,
Each of the split fixing portions, a support portion that is erected on the mounting surface at positions corresponding to the plurality of locations, and a holding 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
On the base end side of the mounting bracket, a device mounting portion for mounting to the mounted portion is formed,
In the region from the tip side of the mounting bracket to the device mounting portion, a slit portion extending in the longitudinal direction is formed,
The electronic control device according to claim 1, wherein the mounting bracket is fixed to the case by inserting the respective support portions that face each other across the predetermined point into the slit portion. The mounting bracket is
A first device mounting portion which is located on the distal end side in the longitudinal direction and which is mounted on a mounted portion,
A second device mounting portion that is located on the base end side in the longitudinal direction and is mounted on the mounted portion;
A case mounting portion that connects the first device mounting portion and the second device mounting portion and is provided to fix the mounting bracket to the case;
The hole provided in the case mounting portion,
And a recess provided in the case mounting portion,
The case attachment portion and the first device attachment portion are connected by a connection portion having a width narrower than the case attachment portion and the first device attachment portion, and the case attachment portion and the first device attachment portion. The electronic control device according to claim 5, wherein a step is formed in the connection part by the connection part. The fixing portion is provided with a plurality of division fixings arranged in a direction orthogonal to the insertion direction of the mounting bracket so as to sandwich the plurality of locations facing each other across the predetermined point of the mounting surface. It is composed of
Each of the split fixing portions includes a support portion that is erected on the mounting surface, and a plurality of pressing portions that extend from above the support portion toward other split fixing portions that are adjacent in different directions,
The electronic control device according to claim 13, wherein the connecting portion is inserted into a gap formed by the pressing portions of the respective divided fixing portions that are adjacent to each other facing each other. The fixing portion is provided with a plurality of divided fixings arranged in a direction orthogonal to the insertion direction of the mounting bracket so as to sandwich the plurality of positions facing each other across the predetermined point of the mounting surface. It is composed of
Each of the split fixing portions includes a support portion that is erected on the mounting surface, and a plurality of pressing portions that extend from the upper side of the support portion toward other split fixing portions that are adjacent in different directions,
The electronic control device according to claim 5, wherein the concave portion is inserted into a gap formed by the pressing portions of the respective divided fixing portions that are adjacent to each other facing each other.

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