JP2008074304A - Structure for mounting automobile control unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure an assembly property and maintainability in a structure for mounting an automobile control unit, to cover at least an upper end side part of the control unit with a protection cover so that the protection cover may not be easily removed, and to keep the protection cover therefor and a plurality of protruding cover members protruded on an upper surface side of an upper wall of the protection cover from getting too close to an engine hood. <P>SOLUTION: The control unit 8 is arranged at a position where its upper end is made to be close to the engine hood 7, and fixed on a mounting member 31 fixed on a front side frame 3. An upper wall 36a of an upper protection cover 36 is vertically fastened on the mounting member 31 by a plurality of upper cover fastening members 37. An upper end side part of the control unit 8 is covered with the upper protection cover 36. Bolt heads 37a of the plurality of cover fastening members 37 located at the upper surface side of the upper wall 36a of the upper protection cover 36 are covered with the plurality of protruding cover members 38 protruded on the upper surface side of the upper wall 36a of the upper protection cover 36. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a control unit mounting structure for mounting a control unit inside an engine room of an automobile.

  Conventionally, an automobile is provided with a control unit for controlling a control system device such as an engine or an automatic transmission. When the control unit is installed inside an engine room, the control unit is an attachment member fixed to a vehicle body member. In particular, in order to improve the assembly and maintenance of the control unit, the control unit is arranged in the upper part of the engine room, and a harness for communication with the control system device is provided at the upper end of the control unit. It is desirable to connect.

  On the other hand, in recent years, theft cases of automobiles and vehicle-mounted luggage have frequently occurred, and various anti-theft devices have been developed and put into practical use as anti-theft measures. However, most of the anti-theft devices are electrically connected to the control unit and operate under the control of the control unit. Therefore, if the connection between the control unit and the harness is separated, the anti-theft device will not function. Therefore, a structure in which a protective cover for covering the control unit is attached is well known. However, if the protective cover is easily removed, there is no point in providing the protective cover.

  Therefore, in Patent Document 1, an upper cover and a lower cover, which are protective covers, are fastened with fastening members made of a plurality of special screws, and at least a connection portion (connector) between the control unit and the harness is covered by this protective cover. In addition, a structure is disclosed in which a notch for passing a harness extending from the control unit is formed in the protective cover.

  Patent Document 2 discloses a security device that covers an operation end (bolt head or nut) of a fastening member, and a spacer that forms a gap between the fastening surface of the fastening target member and the operation end. In addition, a crime prevention device is disclosed that includes a crown member that engages a locking claw in the gap and covers an operation end, and a peripheral wall member that covers the outer peripheral side of the crown member. In addition, in the Example of patent document 2, although application of the security device to the fastening member which attaches a number plate is disclosed, application of the security device to the fastening member which attaches the protective cover which covers a control unit is also considered.

JP-A-7-220806 JP 2006-162051 A

  In a control unit mounting structure in which a control unit is mounted inside the engine room of an automobile, the control unit is arranged in the upper part of the engine room and controlled at the upper end of the control unit in order to ensure ease of assembly and maintenance. It is desirable to connect a harness for communication with the system device. In addition, as a countermeasure against theft of automobiles and vehicle-mounted items, at least the upper end part of the control unit, that is, the connection part between the control unit and the harness is protected by a protective cover. It must be covered so that its protective cover is not easily removed.

  Here, the inventor of the present application fastens the upper wall of the protective cover to the mounting member for fixing the control unit in the vertical direction with a plurality of cover fastening members, and the plurality of protruding cover members on the upper surface side of the upper wall of the protective cover. A control unit mounting structure was proposed in which the projecting cover members cover the operation end portions of a plurality of cover fastening members located on the upper surface side of the upper wall of the protective cover.

  However, in this control unit mounting structure, if a plurality of protrusion cover members are simply provided on the upper surface side of the protective cover, the height position of the protrusion cover member is also considered because a harness is also provided on the upper side of the control unit. If the collision object collides with the engine hood at the time of a vehicle collision, the engine hood may be removed by the projection cover member. The collision energy cannot be deformed so as to be displaced downward appropriately so as to be absorbed.

  Therefore, it is conceivable to lower the overall height position of the control unit mounting structure including the control unit, but the vertical length of the control unit mounting structure also increases due to the provision of a protective cover and a protrusion cover member. When the control unit mounting structure is subject to placement restrictions on the equipment in the engine room located below it, and it is difficult to lower the overall height of the control unit mounting structure with the existing equipment in the engine room There is also.

  An object of the present invention is to secure assembling property and maintainability in a control unit mounting structure of an automobile, and as a theft prevention measure, at least the upper end side portion of the control unit is covered with a protective cover, and the protective cover is easy. And a plurality of protruding cover members protruding from the upper surface of the upper wall of the protective cover so as not to be too close to the engine hood.

  The vehicle control unit mounting structure according to claim 1 is a vehicle control unit mounting structure in which a control unit is mounted inside an engine room of the vehicle, and the control unit has its upper end approaching an engine hood that covers the upper part of the engine room. A protective cover having an upper wall that is disposed at a predetermined position and fixed to a predetermined mounting member fixed to the vehicle body member, a harness is connected to the upper end portion of the control unit, and covers at least the upper end portion of the control unit A plurality of cover fastening members for fastening the upper wall of the protective cover to the mounting member in the vertical direction, and projecting on the upper surface side of the upper wall of the protective cover, and positioned on the upper surface side of the upper wall of the protective cover A plurality of protrusion cover members covering the operation end portions of the plurality of cover fastening members, and the upper side of the plurality of protrusion cover members and the control unit Wherein the harness is located is arranged so as not to overlap in plan view.

  The control unit is placed at a position where its upper end is close to the engine hood that covers the upper part of the engine room, and is fixed to a predetermined mounting member fixed to the vehicle body member. Will improve. Since the upper wall of the protective cover is fastened in the vertical direction to the mounting member by the plurality of cover fastening members, and at least the upper end side portion of the control unit is covered by this protective cover, the connection portion between the control unit and the harness is covered. Since the operation end portions of the plurality of cover fastening members located on the upper surface side of the upper wall of the protective cover are covered by the plurality of protrusion cover members that are provided on the upper surface side of the upper wall of the protective cover, As a countermeasure for preventing theft of automobiles and in-vehicle packages, the plurality of cover fastening members are not easily released and released, that is, the protective cover is not easily removed.

  Since the plurality of protrusion cover members and the harness positioned on the upper side of the control unit are arranged so as not to overlap in plan view, that is, the plurality of protrusion cover members and the harness positioned on the upper side of the control unit are horizontal. The engine hood is usually formed in an inclined shape because it is displaced in the direction, but a plurality of protrusion cover members are arranged below the high part of the engine hood located above the protective cover. This prevents the protective cover and the plurality of protruding cover members from being too close to the engine hood. That is, when a collision object collides with the engine hood at the time of a vehicle collision, the engine hood can be deformed so as to be appropriately displaced downward so as to absorb the collision energy.

  In addition, since the vertical length of the control unit mounting structure including the control unit can be made as small as possible, the control unit mounting structure can be provided on the equipment in the engine room located under the control unit without any restrictions on the arrangement. Even in the arrangement of the equipment in the engine room, the above-described operation can be obtained without lowering the overall height position of the control unit mounting structure.

The following configuration can be adopted as a dependent claim of claim 1.
The control unit is arranged such that the length in the vehicle width direction is longer than the length in the front-rear direction of the control unit, and the harness positioned above the control unit is arranged so as to extend in the vehicle width direction. A plurality of fasteners for fastening the control unit to the member in the front-rear direction are provided, the engine hood is formed in an inclined shape so as to move downward toward the front, and the plurality of protrusion cover members are positioned above the control unit. It is arrange | positioned behind a harness (Claim 2).

  In the vicinity of the wheel house inside the engine room, the battery is arranged vertically so that the length in the front-rear direction is longer than the length in the vehicle width direction, and is attached to the battery attachment member fixed to the vehicle body member, The attachment member is fixed to the front portion of the battery attachment member, and the control unit is disposed and fixed in the vicinity of the front of the battery via the attachment member.

  A plurality of the harnesses are provided, and a plurality of harnesses located on the upper side of the control unit are arranged side by side in front and back (Claim 4). A weakened portion for reducing the vertical rigidity of the mounting member is provided in the mounting member. The upper wall of the protective cover has a first upper wall portion located on the upper side of the harness on the upper side of the control unit and a second upper wall portion formed in a stepped shape from the first upper wall portion. (2) A plurality of projecting cover members project from the upper surface side of the upper wall portion.

  According to the control unit mounting structure for an automobile according to claim 1, the control unit is disposed at a position where the upper end thereof is close to the engine hood that covers the upper part of the engine room, and is fixed to a predetermined mounting member fixed to the vehicle body member. Therefore, the assembly and maintenance of the control unit can be improved. The upper wall of the protective cover is fastened to the mounting member in the vertical direction by a plurality of cover fastening members, and at least the upper end portion of the control unit is secured by the protective cover. In order to cover, the connection portion between the control unit and the harness can be covered and protected, and a plurality of protrusion cover members projecting on the upper surface side of the upper wall of the protective cover and positioned on the upper surface side of the upper wall of the protective cover Covering the operation end of the cover fastening member, while ensuring ease of assembly and maintenance, multiple covers can be used to prevent theft of automobiles and in-vehicle packages. Forming member is not released easily concluded, that is, it is possible to make the protective cover is not easily removed.

  Since the plurality of protrusion cover members and the harness positioned above the control unit are arranged so as not to overlap in plan view, the plurality of protrusion cover members and the harness positioned above the control unit are horizontally aligned. Normally, the engine hood is formed in an inclined shape, but by disposing a plurality of protruding cover members on the lower side of the high part of the engine hood located above the protective cover, The protective cover and the plurality of protruding cover members can be prevented from coming too close to the engine hood. If a collision object collides with the engine hood at the time of a vehicle collision, the engine hood can be appropriately lowered to absorb the collision energy. It becomes deformable to be displaced. In addition, since the vertical length of the control unit mounting structure including the control unit can be made as small as possible, the control unit mounting structure can be provided on the equipment in the engine room located under the control unit without any restrictions on the arrangement. Even in the arrangement of the equipment in the engine room, the above effect can be achieved without lowering the overall height position of the control unit mounting structure.

  According to the control unit mounting structure for an automobile according to claim 2, the control unit is arranged so that the length in the vehicle width direction is longer than the length in the front-rear direction of the control unit. Since the harness located above the control unit extends in the vehicle width direction, the harness located above the control unit can be smoothly arranged to protect the cover. Since the plurality of fasteners for fastening the control unit in the front-rear direction are provided on the mounting member, the control unit can be securely attached to the mounting member, and the engine hood moves downward as it moves forward. Since it is formed in an inclined shape and a plurality of protrusion cover members are arranged behind the harness positioned above the control unit, protection is provided. Bars, it is possible to make a plurality of projections the cover member is not too close to reliably engine hood.

  According to the control unit mounting structure for an automobile according to claim 3, the battery is arranged vertically in the vicinity of the wheel house inside the engine room so that the length in the front-rear direction is longer than the length in the vehicle width direction, Since it is attached to the battery attachment member fixed to the vehicle body member, the attachment member is fixed to the front portion of the battery attachment member, and the control unit is disposed and fixed in the vicinity of the front of the battery via this attachment member. It can be arranged compactly adjacent to the front and rear, and can be securely fixed by effectively utilizing the battery mounting member.

  According to the automobile control unit mounting structure of the fourth aspect, since a plurality of harnesses are provided and a plurality of harnesses located on the upper side of the control unit are arranged in front and rear, the protective cover can be downsized in the vertical direction, and the control unit mounting The vertical length of the structure can be reduced.

  According to the automobile control unit mounting structure of the fifth aspect, since the mounting member is provided with the weakened portion that reduces the rigidity in the vertical direction of the mounting member, when a collision object collides with the engine hood during a vehicle collision, the engine hood The mounting member can be positively displaced downward when it is displaced downward and hits the protrusion cover member or the protective cover, so that the engine hood can be properly displaced downward so that the collision energy can be absorbed reliably. Can be transformed into

  According to the control unit mounting structure for an automobile of claim 6, the upper wall of the protective cover is formed in a stepped shape from the first upper wall portion and the first upper wall portion that are located above the harness on the upper side of the control unit. And a plurality of projection cover members projectingly provided on the upper surface side of the second upper wall portion, the height positions of the plurality of projection cover members are reliably lowered, It is possible to ensure that the protrusion cover member does not approach the engine hood too much.

  In the control unit mounting structure for an automobile of the present invention, the control unit is disposed at a position where the upper end of the control unit is close to the engine hood that covers the upper part of the engine room, and is fixed to a predetermined mounting member fixed to the vehicle body member, The upper wall of the protective cover is fastened in the vertical direction to the mounting member by a plurality of cover fastening members, and at least the upper end side portion of the control unit is covered by the protective cover and protrudes from the upper surface side of the upper wall of the protective cover. The protruding cover members cover the operation end portions of the plurality of cover fastening members located on the upper surface side of the upper wall of the protective cover.

  As shown in FIGS. 1 to 3, an engine room 2 is formed at the front portion of the automobile 1, and a pair of left and right front side frames 3 extending in the front-rear direction are formed at both ends of the engine room 2 in the vehicle width direction. A pair of left and right apron members 4 extending in the front-rear direction are disposed on the upper side, and a pair of left and right wheel houses 5 are formed. Each of the pair of front side frames 3 includes an inner member 3a and an outer member 3b. The upper side flange portions and the lower end flange portions are joined to each other to form a closed cross-sectional structure. The rear end side portion is coupled to a dash panel 6 that partitions the engine room 2 and the vehicle compartment.

  The upper part of the engine room 2 is covered with an engine hood 7 (see FIG. 10) formed so as to be inclined downward toward the front and inclined downward toward the outer side in the vehicle width direction with respect to the center in the vehicle width direction. In addition to the engine and the like, the engine room 2 includes a control unit 8 for controlling a control system device such as an engine and an antitheft device, and an electrical system device such as a control unit 8 and an engine starter and lamps. Various devices, mechanisms, members, and components (equipment in the engine room) such as a battery 9 that supplies electric power are accommodated. In addition, 10 is an automatic transmission and 11 is a brake booster.

First, the battery mounting structure 20 for mounting the battery 9 inside the engine room 2 will be described.
As shown in FIGS. 1 to 7, the battery mounting structure 20 includes a battery mounting member 21 and a pair of front and rear leg members 22. The battery mounting member 21 has a lower wall 21a, a front wall 21b, an inner wall 21c, and an outer wall 21d, is formed in a rectangular shape that is long in the front-rear direction in plan view, and is formed in a box shape that opens upward and rearward. The wheel house 5 is disposed in the vicinity of the wheel house 5, more specifically, in the vehicle width direction inward vicinity of the suspension tower connecting portion 5 a of the wheel house 5.

  The front wall 21b of the battery mounting member 21, the front end portion of the inner wall 21c, and the outer wall 21d have the same vertical length, and are higher from the bottom wall 21a than most of the inner wall 21c other than the front end portion. The control unit 8 is attached to the front wall 21b of the battery attachment member 21 via a control unit attachment structure 30 described later.

  The pair of leg members 22 includes a vertical wall 22a on the outer end side in the vehicle width direction, a horizontal wall 22b on the upper end side, and an oblique wall connecting the upper end portion of the vertical wall 22a and the outer end portion in the vehicle width direction of the horizontal wall 22b. 22c, the vertical wall 22a is fastened to the inner member 3a of the front side frame 3 from the inner surface side by a fastening member 23 (bolts and nuts), and the horizontal wall 22b is fastened to the lower wall 21a of the battery mounting member 21 from the lower surface side. The battery mounting member 21 is fastened by a member 24 (bolts and nuts), and is fixedly supported by the front side frame 3 that is a vehicle body member via a pair of leg members 22.

  The battery 9 is arranged in a vertical direction at a position near the wheel house 5 so that the longitudinal direction length is longer than the length in the vehicle width direction of the battery 9 and is accommodated in the battery mounting member 21 from above, A battery pressing member 25 connected to the battery mounting member 21 is pressed and fixed from above. The battery pressing member 25 is detachably connected to the battery mounting member 21, and the battery 9 can be replaced by removing the battery pressing member 25.

Next, the control unit 8 and the control unit mounting structure 30 for mounting the control unit 8 inside the engine room 2 will be described.
As shown in FIGS. 6 to 9, the control unit 8 is configured in a flat shape with a rectangular shape in the front view and a small width in the front-rear direction, and the control unit 8 protrudes symmetrically on both sides in the vehicle width direction. Four fastening portions 8a are formed.

  As shown in FIG. 1 to FIG. 4 and FIG. 6 to FIG. 10, the control unit 8 has a length in the vehicle width direction longer than the length in the front-rear direction of the control unit 8 in the front vicinity of the battery 9. The control unit 8 is disposed at a position where the upper end of the control unit 8 is close to the engine hood 7, and is fixed to the front portion of the mounting member 31 fixed to the front portion of the battery mounting member 21. Arranged and fixed near the front.

  A pair of harnesses 15 for communication with the control system device are connected to the inner end portion in the vehicle width direction of the upper end portion of the control unit 8 via a connector 16, and a pair of harnesses 15 located above the control unit 8. Are arranged in parallel in the front-rear direction so as to extend in the vehicle width direction (outside in the vehicle width direction from the connector 16). The pair of harnesses 15 extends downward from the upper side of the control unit 8 along the inner end portion of the control unit 8 in the vehicle width direction.

  As shown in FIGS. 1 to 10, the control unit mounting structure 30 includes four mounting member fasteners 32 that fasten the mounting member 31 to the front surface portion of the front wall 21 b of the mounting member 31 and the battery mounting member 21 in the front-rear direction. Four unit fasteners 33 that fasten the control unit 8 in the front-rear direction on the front surface of the mounting member 31, a lower protective cover 34 that covers a substantially lower half of the control unit 8, and a lower protective cover 34 on the mounting member 31. Two upper cover fastening members 35 for fastening the upper protective cover 36 in the front-rear direction, an upper protective cover 36 having an upper wall 36 a that covers a substantially upper half including the upper end portion of the control unit 8, and the upper protective cover 36 on the mounting member 31. Four upper cover fastening members 37 for fastening the upper wall 36a in the vertical direction are provided.

  Further, the control unit mounting structure 30 protrudes on the upper surface side of the upper wall 36a of the upper protective cover 36, and the operation end portions of the four upper cover fastening members 37 located on the upper surface side of the upper wall 36a of the protective cover 36. The four protrusion cover members 38 that cover the bolt heads 37a are provided, and the four protrusion cover members 38 and the pair of harnesses 15 and connectors 16 positioned above the control unit 8 do not overlap in plan view. It is arranged.

  The mounting member 31 is formed in a rectangular plate shape that is substantially the same size as the front wall 21b of the battery mounting member 21 in a plan view, and is bent forward at the upper end portion of the mounting member 31 and protrudes into a flange portion 31a and a flange reinforcing portion 31b. Are formed on the upper and lower portions of the mounting member 31 and light-emitting and heat-dissipating openings 31c and 31d are formed, and three mounting seats 31e to 31g bulging forward at the inner end of the mounting member 31 in the vehicle width direction are formed. Two mounting seats 31h and 31i that are formed and bulge forward are formed at the outer end portion of the mounting member 31 in the vehicle width direction. Most of the flange portion 31a is formed in a horizontal portion, and has inclined portions on both sides of the horizontal portion in the vehicle width direction.

  Here, the front wall 21b of the battery mounting member 21 has five bosses corresponding to the mounting seats 31e to 31i and bulging forward (the boss portions 21e and 21h shown in FIG. 8 correspond to the mounting seats 31e and 31h. The other boss portions are not shown), and the mounting seats 31e to 31i of the mounting member 31 are engaged with these boss portions from the front, and the mounting seats 31f, 31g, 31h, 31i and the like. The boss portion corresponding to is fastened in the front-rear direction by an attachment member fastener 32 composed of four sets of bolts and nuts.

  Further, in a state where the four fastened portions 8a of the control unit 8 are in contact with the mounting member 31 from the front side, the fastened portion 8a and the mounting member 31 are moved forward and backward by the unit fastener 33 including four sets of bolts and nuts. It is fastened in the direction. In this state, the flange portion 31 a of the attachment member 31 is positioned rearward and upper than the pair of harnesses 15 and the connectors 16 positioned above the control unit 8.

  The lower protective cover 34 has a front wall 34a, left and right side walls 34b, and a lower wall 34c. Two fastened portions 34d are formed at both ends in the vehicle width direction at the upper end of the lower protective cover 34, and the front wall 34a An upper cover receiving portion 34e protruding forward is formed at the upper end portion. In a state where the left and right fastened portions 34d are in contact with the mounting seats 31e and 31h of the mounting member 31, the fastened portions 34d, the mounting seats 31e and 31h, and the boss portions 21e and 21h are composed of two sets of bolts and nuts. The lower case fastening member 35 is fastened in the front-rear direction.

  The upper protective cover 36 has an upper wall 36a, a front wall 36b, and left and right side walls 36c. An engaging portion 36d bent downward is formed at the rear end portion of the upper wall 36a, and a rear portion is formed at the lower end portion of the front wall 36b. A mounting portion 36e bent to the right is formed. As with the flange portion 31a of the mounting member 31, the upper wall 36a is mostly formed in a horizontal portion and has inclined portions on both sides in the vehicle width direction of the horizontal portion.

  The rear portion of the upper wall 36a abuts on the flange portion 31a of the mounting member 31 from above, the engaging portion 36d engages with the flange portion 31a of the mounting member 31 from the rear side, and the mounting portion 36e is above the lower protective cover 34. An upper case composed of four sets of bolts and nuts in which the rear portion of the upper wall 36a and the flange portion 31a of the mounting member 31 are disposed at appropriate intervals in the vehicle width direction while being placed on the cover receiving portion 34e. A pair of harnesses 15 and connectors 16 positioned above the control unit 8 are positioned below the front portion of the upper wall 36a by being fastened in the vertical direction by the fastening members 37.

  The four protrusion cover members 38 are formed in a cylindrical shape having a slightly larger inner diameter and a larger vertical length than the bolt head portion 37a of the upper cover fastening member 37, and four of the rear portions of the upper wall 36a of the upper protective cover 36. It arrange | positions in the position corresponding to the two upper cover fastening members 37, and the lower end part is adhere | attached on the upper surface of the upper wall 36a of the upper protective cover 36 by welding etc. FIG. The protrusion cover member 38 is fixed to the upper wall 36a of the upper protective cover 36 before the upper cover fastening member 37 is mounted, and the four upper cover fastening members 37 are inserted into the four protrusion cover members 38. Installed.

  The three upper cover fastening members 37 and the protruding cover members 38 are mounted on the horizontal portion of the upper wall 36a of the upper protective cover 36 in the vertical direction, but the remaining one upper cover fastening member 37 and protruding cover member 38 are attached. Is mounted on the inclined portion of the upper portion 36a of the upper wall 36a of the upper protective cover 36 in a posture slightly inclined toward the surface orthogonal direction of the inclined portion. In addition, since the height position of the inclined upper cover fastening member 37 is lower than that of the other upper cover fastening members 37, the engine hood 7 is lowered downward in the vehicle width direction with respect to the vehicle width direction center. Although it is formed in an inclined shape to be transferred, a sufficient distance from the engine hood 7 can be provided.

The effect of the control unit mounting structure 30 described above will be described.
Since the control unit 8 is disposed at a position where the upper end thereof is close to the engine hood 7 and is fixed to the mounting member 31 fixed to the front side frame 3 via the battery mounting member 21, the assembly of the control unit 8 is possible. The four upper cover fastening members 37 fasten the upper wall 36a of the upper protective cover 36 in the vertical direction, and the upper protective cover 36 covers the upper end portion of the control unit 8. Therefore, the connection portion (connector 16) between the control unit 8 and the harness 15 can be covered and protected.

  Bolt heads that are operation end portions of four cover fastening members 37 that protrude from the upper surface side of the upper wall 36a of the upper protective cover 36 and are positioned on the upper surface side of the upper wall 36a of the protective cover 36 by the four protruding cover members 38. As the cover 37a is covered, the four upper cover fastening members 37 are not easily fastened and released as an anti-theft measure for the automobile 1 and the in-vehicle luggage while ensuring assemblability and maintainability, that is, the upper protective cover 36 is easy. Can be prevented from being removed.

  Since the four protrusion cover members 38 and the harness 15 and the connector 16 positioned above the control unit 8 are disposed so as not to overlap in plan view, the four protrusion cover members 38 are positioned above the control unit 8. The harness 15 and the connector 16 that are to be displaced are horizontally displaced, and four projecting cover members 38 are disposed on the lower side of the high portion of the engine hood 7 located on the upper side of the upper protective cover 36. Thus, the upper protective cover 36 and the four protruding cover members 38 can be prevented from coming too close to the engine hood 7.

  Therefore, when a collision object collides with the engine hood 7 at the time of a vehicle collision, the engine hood 7 can be deformed so as to be appropriately displaced downward so as to absorb the collision energy. Moreover, since the vertical length of the control unit mounting structure 30 including the control unit 8 can be made as small as possible, the control unit mounting structure 30 can be provided in the equipment in the engine room positioned below the control unit mounting structure without being restricted. Even with the arrangement of the existing equipment in the engine room, the above-described effect can be achieved without lowering the overall height of the control unit mounting structure 30.

  Since the control unit 8 is arranged so that the length in the vehicle width direction is longer than the length in the front-rear direction of the control unit 8, it can be arranged compactly adjacent to the battery 9 in the front-rear direction. Since the harness 15 positioned at the position extending in the vehicle width direction is disposed, the harness 15 positioned on the upper side of the control unit 8 can be smoothly disposed and covered by the upper protective cover 36. Since the four unit fasteners 33 for fastening the control unit 8 in the front-rear direction are provided, the control unit 8 can be securely attached to the attachment member 31, and the engine hood is formed in an inclined shape so as to move downward toward the front. 7, the four projecting cover members 38 are arranged behind the harness 15 positioned on the upper side of the control unit 8. Four protrusions cover member 38 can be prevented too close to reliably engine hood 7.

  A battery 9 is disposed vertically in the engine room 2 in the vicinity of the wheel house 5 so that the length in the front-rear direction is longer than the length in the vehicle width direction, and a pair of leg members 22 are attached to the front side frame 3. Since the attachment member 31 is fixed to the front portion of the battery attachment member 21 and the control unit 8 is disposed and fixed near the front of the battery 9 via the attachment member 31. The control unit 8 can be compactly disposed adjacent to the battery 9 in the front-rear direction, and can be securely fixed by effectively utilizing the battery mounting member 21.

  Since the pair of harnesses 16 are provided and the pair of harnesses 15 located on the upper side of the control unit 8 are arranged side by side, the upper protective cover 36 can be downsized in the vertical direction, and the vertical length of the control unit mounting structure 30 can be reduced. The thickness can be reduced.

  As shown in FIG. 11, the control unit mounting structure 30 </ b> A of the second embodiment is obtained by changing the mounting member 31 of the control unit mounting structure 30 of the first embodiment. In this control unit mounting structure 30A, the mounting member 31A is provided with a fragile portion 31j that reduces the vertical rigidity of the mounting member 31A. For example, the fragile portion 31j includes a bead portion 31j extending in the vehicle width direction, and the bead portion 31j is formed over the entire width across the opening 31d of the attachment member 31A.

  According to the control unit mounting structure 30A, since the weakened portion 31j that reduces the vertical rigidity of the mounting member 31A is provided in the mounting member 31A, the engine hood can be used when a collision object collides with the engine hood 7 during a vehicle collision. When 7 is displaced downward and hits the protrusion cover member 38 and the upper protective cover 36, the attachment member 31A can be positively displaced downward, so that the engine hood 7 can reliably absorb the collision energy. It can be deformed so as to be appropriately displaced downward.

  As shown in FIGS. 12 and 13, the control unit mounting structure 30 </ b> B of the third embodiment includes the mounting member 31, the upper protective cover 36, the upper cover fastening member 37, and the protrusion cover member 38 of the control unit mounting structure 30 of the first embodiment. Is a change. In this control unit mounting structure 30B, the mounting member 31B has a flange portion 31k that bends backward and protrudes at the upper end portion thereof.

  The upper wall 36f of the upper protective cover 36B has a first upper wall portion 36g located on the upper side of the harness 15 on the upper side of the control unit 8, and a second upper portion formed in a step-down manner from the first upper wall portion 36g to the rear. The second upper wall portion 36h and the flange portion 31k have a plurality of upper cover fastening members in a state where the second upper wall portion 36h is in contact with the flange portion 31k of the mounting member 31B from above. It is fastened in the vertical direction by 37B.

  A plurality of projection cover members 38B that cover the operation end portions of the plurality of upper cover fastening members 37B protrude from the upper surface side of the second upper wall portion 36h, and these projection cover members 38B are protruded from the first upper wall portion 36g. Is also located below. According to the control unit mounting structure 30B, the height positions of the plurality of projection cover members 38B can be reliably lowered, and the plurality of projection cover members 38B can be reliably prevented from coming too close to the engine hood 7. .

  In addition, in the range which does not deviate from the meaning of this invention, it can implement by adding various changes other than the matter disclosed in Examples 1-3.

FIG. 3 is a plan view of a main part including a control unit mounting structure according to the first embodiment. It is a perspective view of the principal part containing the control unit attachment structure of an upper protection cover mounting state. FIG. 3 is a view corresponding to FIG. 2 with the upper protective cover removed. It is a perspective view from the lower side of the principal part containing a control unit attachment structure. It is the VV sectional view taken on the line of FIG. It is a disassembled perspective view from the front of a control unit and a control unit attachment structure. It is a disassembled perspective view from the back of a control unit and a control unit attachment structure. It is the plane sectional view cut horizontally along the axis L1 of FIG. It is the plane sectional view cut horizontally along axis L2 of Drawing 6. It is the XX sectional view taken on the line of FIG. FIG. 7 is a diagram corresponding to FIG. FIG. 8 is a diagram corresponding to FIG. FIG. 10 is a diagram corresponding to FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car 2 Engine room 3 Front side frame 5 Wheel house 7 Engine hood 8 Control unit 9 Battery 15 Harness 21 Battery attachment member 30,30A, 30B Control unit attachment structure 31,31A, 31B Attachment member 31j Fragile part 32 Attachment member fastener 36 Upper protective cover 36a, 36f Upper wall 36g First upper wall portion 36h Second upper wall portion 37, 37B Upper cover fastening member 37a Bolt head 38 Projection cover member

Claims (6)

In the control unit mounting structure of a car that attaches the control unit to the inside of the engine room of the car,
The control unit is disposed at a position close to the engine hood covering the upper part of the engine room, and fixed to a predetermined mounting member fixed to the vehicle body member, and a harness is connected to the upper end of the control unit. And
A protective cover having an upper wall covering at least an upper end side portion of the control unit;
A plurality of cover fastening members for fastening the upper wall of the protective cover to the mounting member in the vertical direction;
A plurality of projecting cover members that project from the upper surface side of the upper wall of the protective cover and cover the operation end portions of the plurality of cover fastening members located on the upper surface side of the upper wall of the protective cover;
A control unit mounting structure for an automobile, wherein the plurality of protruding cover members and a harness positioned above the control unit are arranged so as not to overlap in a plan view. The control unit is arranged so that the length in the vehicle width direction is longer than the length in the front-rear direction of the control unit, and a harness located on the upper side of the control unit is arranged to extend in the vehicle width direction,
A plurality of fasteners for fastening the control unit to the mounting member in the front-rear direction;
The engine hood is formed in an inclined shape so as to move downward in the forward direction, and the plurality of projecting cover members are disposed behind the harness positioned on the upper side of the control unit. The vehicle control unit mounting structure described. In the vicinity of the wheel house inside the engine room, the battery is arranged vertically so that the length in the front-rear direction is longer than the length in the vehicle width direction, and is attached to the battery attachment member fixed to the vehicle body member,
3. The control unit mounting structure for an automobile according to claim 2, wherein the mounting member is fixed to a front portion of the battery mounting member, and the control unit is disposed and fixed to a front vicinity portion of the battery via the mounting member. .   3. The control unit mounting structure for an automobile according to claim 2, wherein a plurality of the harnesses are provided, and a plurality of harnesses positioned on the upper side of the control unit are arranged side by side.   4. The control unit mounting structure for an automobile according to claim 3, wherein a weakened portion for reducing the vertical rigidity of the mounting member is provided in the mounting member.   The upper wall of the protective cover has a first upper wall portion located on the upper side of the harness on the upper side of the control unit and a second upper wall portion formed in a stepped shape from the first upper wall portion. 6. A control unit mounting structure for an automobile according to claim 1, wherein a plurality of projecting cover members project from the upper surface side of the upper wall portion.

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