JP2008037300A - On-vehicle component mounting structure for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle component mounting structure for an automobile for mounting an on-vehicle component such as an electronic control unit into an engine room, in which interference between the on-vehicle component such as the electronic control unit with a component, if retracted, is avoided to prevent breakage of the on-vehicle component such as the electronic control unit at the time of a collision of a vehicle, so that the on-vehicle component is reusable, and that recorded data on the on-vehicle component can be protected. <P>SOLUTION: An assist piece part 14 is installed on a front side frame 3, so that a base plate part 11 of a mounting bracket 10 is pushed by the assist piece part 14 to move upward. As the base plate part 11 thus moves upward, an ECU 1 fixed to the base plate part 11 also moves upward. A transmission 8, if retracted, is thus prevented from interfering with the ECU 1, thereby breakage of the ECU 1 is prevented. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an in-vehicle component mounting structure for an automobile, and more particularly to a mounting structure for an electronic control unit such as an ECU (Engine Control Unit) installed in an engine room.

  2. Description of the Related Art Conventionally, there has been known a technique for preventing damage to a vehicle-mounted component by preventing interference between a vehicle-mounted component installed in an engine room and a power train such as an engine at the time of a vehicle collision.

  For example, in the following Patent Document 1, a fuel filter installed in an engine room is attached so as to bridge between a front side frame and a dash panel side, and a metal unit such as an ABS unit is disposed above the fuel filter. A structure is disclosed.

By adopting such a structure, even if the powertrain of the engine or the like retreats at the time of a vehicle collision, the metal unit comes into contact with the powertrain and suppresses the retraction of the powertrain. Can prevent interference.
Japanese Patent Laid-Open No. 2005-247027

  By the way, after a vehicle collision, the damaged vehicle may be repaired so that the vehicle can run again. At this time, among the in-vehicle components, there is a demand for reducing the repair cost required for the repair by reusing the expensive in-vehicle components as much as possible without replacing them.

  In response to such a request, in the case of the structure of the above-described Patent Document 1, an expensive electronic control unit such as an ABS unit is brought into contact with the power train, so that the electronic control unit is damaged and the electronic control unit is reused. There is a problem that it becomes impossible.

In recent years, a technique has been developed to store the driving state of the vehicle immediately before the collision by using an image or the like so that it can be used for subsequent accident processing. However, as a storage means for storing the driving state of the vehicle. An electronic control unit such as an engine may be used.
Even in this case, when the electronic control unit is brought into contact with the power train as in the structure of the above-mentioned Patent Document 1, there is a problem that the operation data recorded in the electronic control unit cannot be analyzed.

  Therefore, the present invention avoids the interference between the in-vehicle component such as the electronic control unit and the retreating component at the time of the vehicle collision in the in-vehicle component mounting structure of the automobile in which the in-vehicle component such as the electronic control unit is installed in the engine room. It is an object of the present invention to provide an in-vehicle component mounting structure for an automobile that prevents damage to in-vehicle components such as an electronic control unit, enables reuse of the in-vehicle components, and can protect recorded data of the in-vehicle components.

  A vehicle-mounted component mounting structure for an automobile according to the present invention includes a dash panel that constitutes a rear wall of an engine room, and a side frame that extends rearward from the vehicle front side of the dash panel and extends downward from the dash panel to the vehicle rear side. And an in-vehicle component positioned in front of the dash panel and above the side frame, a mounting leg portion extending backward from the in-vehicle component and attached to the dash panel, and extending downward from the in-vehicle component. Displacement transmission legs that are attached to the side frame and transmit the displacement of the side frame when the vehicle collides to an in-vehicle component.

According to the above configuration, since the displacement transmission leg portion that transmits the displacement at the time of the vehicle collision of the side frame to the vehicle-mounted component is provided, the upward displacement at the time of the vehicle collision of the side frame is transmitted to the vehicle-mounted component. Sometimes the in-vehicle component moves upward.
For this reason, in-vehicle parts avoid parts that retreat from the front in the event of a vehicle collision, and move upward, thus preventing interference with parts that retreat in the event of a vehicle collision, such as an engine or a transmission. be able to.

The “on-vehicle component” here includes an expensive electronic control unit such as an ECU, an ABS unit, a TRC unit, an AT unit, or a control unit for a hybrid vehicle.
Further, the “displacement transmission leg” may have any shape as long as the displacement of the side frame at the time of the vehicle collision can be reliably transmitted to the in-vehicle component.

In one embodiment of the present invention, the side frame includes a horizontal portion extending substantially horizontally from the front side of the vehicle, and an inclined portion extending obliquely downward from the rear end of the horizontal portion toward the lower side of the dash panel. And the displacement transmission leg portion is attached to the inclined portion.
According to the above configuration, the displacement transmitting leg portion is attached to the inclined portion that extends obliquely downward toward the lower side of the dash panel, so that the displacement of the inclined portion that attempts to rise upward from the vicinity of the lower portion of the dash panel at the time of the vehicle collision is prevented. The on-vehicle component can be moved upward by using it.
In other words, in the case of a side frame having a horizontal part and an inclined part, the horizontal part may be displaced in any direction, up, down, left, or right in the event of a vehicle collision, particularly in the case of a frontal collision. Displace upward from the vicinity of the lower part of the dash panel. For this reason, the upward movement of the in-vehicle component is ensured by attaching the displacement transmission leg portion to the inclined portion that is displaced upward.
Therefore, it is possible to more reliably obtain a push-up force from the inclined portion of the side frame and move the vehicle-mounted component upward.

In one embodiment of the present invention, a plurality of attachment points to the side frame of the displacement transmission leg are set in the front and rear directions.
According to the said structure, the angle change at the time of the vehicle collision of a side frame can also be transmitted to vehicle-mounted components by setting the attachment position to the side frame of a displacement transmission leg part in multiple front and back.
Therefore, the installation angle of the in-vehicle component can also be changed at the time of the vehicle collision, and the installation angle of the in-vehicle component at the time of the vehicle collision can be made more appropriate. For example, by changing an in-vehicle component that has been inclined to a vertical arrangement, the space in the front-rear direction can be made compact and the amount of retreat toward the dash panel can be reduced.

In one embodiment of the present invention, the rigidity of the displacement transmission leg is made larger than the rigidity of the mounting leg.
According to the above configuration, since the rigidity of the displacement transmission leg is greater than the rigidity of the attachment leg, the displacement leg is deformed first without deformation of the displacement transmission leg at the time of a vehicle collision.
For this reason, the transmission function of the raising force of the displacement transmission leg is ensured, and the upward movement of the in-vehicle component can be surely caused.
Therefore, the on-vehicle component can be reliably moved upward at the time of the vehicle collision, and interference with the component that moves backward at the time of the vehicle collision can be avoided more reliably.

In one embodiment of the present invention, the displacement transmitting leg is provided with a reinforcing bead extending in the vertical direction.
According to the said structure, the vertical direction rigidity of a displacement transmission leg part can be improved by providing an up-down direction reinforcement bead in a displacement transmission leg part.
Therefore, with a simple configuration, the vertical rigidity of the displacement transmission leg can be increased, the transmission performance of the push-up force of the displacement transmission leg can be enhanced, and the in-vehicle component can be reliably moved upward.

In one embodiment of the present invention, the mounting leg portion is provided with a weakened portion having reduced rigidity.
According to the above configuration, by providing the weakened portion on the mounting leg portion, when the lifting force is received from the displacement transmission leg portion, the weakened portion is deformed and the mounting leg portion is easily deformed. .
Therefore, at the time of a vehicle collision, the mounting leg can be more reliably deformed and the in-vehicle component can be moved upward.

In one embodiment of the present invention, the displacement transmission leg is connected to the mounting leg.
According to the above configuration, by connecting the displacement transmission leg to the mounting leg, the lifting force of the displacement transmission leg can be directly transmitted to the mounting leg, and the mounting leg can be deformed more reliably. Can do. Further, since the push-up force of the displacement transmission leg portion is directly transmitted to the mounting leg portion without going through the on-vehicle component, the push-up force does not act on the on-vehicle component during upward movement.
Therefore, at the time of a vehicle collision, the mounting leg portion is reliably deformed, and the in-vehicle component is more easily moved upward. Further, since the push-up force does not act on the on-vehicle component during movement, the on-vehicle component is not likely to be damaged.

In one embodiment of the present invention, a plate-like mounting base portion for mounting the in-vehicle component is provided, the mounting leg portions extending toward the dash panel are provided on both sides of the mounting base portion, and the side is mounted on the mounting base portion. The displacement transmission leg portion extending toward the frame is provided.
According to the said structure, the support rigidity of the vehicle-mounted components at the time of normal can be improved by attaching vehicle-mounted components to the plate-shaped mounting base part which provided the mounting leg part on both sides. In addition, by providing displacement transmission legs on the mounting base, it is possible to reliably transmit the push-up force from the displacement transmission legs to the mounting legs on both sides, and reliably deform the mounting legs on both sides. Can be made.
Therefore, the in-vehicle component can be stably supported, and the in-vehicle component can be reliably moved upward by the push-up force from the displacement transmission leg.
In this case as well, the push-up force of the displacement transmission leg does not directly act on the vehicle-mounted component, so that the vehicle-mounted component is not damaged by the push-up force.

According to the present invention, the in-vehicle component moves upward by using the displacement of the side frame at the time of the vehicle collision, and interference with the component that moves backward at the time of the vehicle collision can be avoided.
Therefore, in an in-vehicle component mounting structure for an automobile in which in-vehicle components such as an electronic control unit are installed in the engine room, in the event of a vehicle collision, the interference between the in-vehicle components such as the electronic control unit and the retreating components can be avoided. It is possible to protect the recorded data of the in-vehicle component by preventing the in-vehicle component from being damaged and reusing the in-vehicle component.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
FIG. 1 is an overall perspective view of the mounting structure for a vehicle-mounted component according to the first embodiment as viewed from the front and obliquely upward. FIG. 2 is a detailed perspective view of the main part of the mounting structure.

  As shown in FIG. 1, an ECU (Engine Control Unit) 1 that is a vehicle-mounted part of the present embodiment is attached to the front side of a dash panel 2 that constitutes the rear wall of the engine room ER. A front side frame 3 (only the left front side frame is disclosed in the drawing) extending in the vehicle front-rear direction is extended in front of the side portion of the dash panel 2, and a vertical side is provided on the outer side (left side). A wheel house apron 4 in which a suspension tower 4a standing in the direction is formed at the center is stretched.

  The dash panel 2 is formed with an upper concave portion 5 corresponding to the floor tunnel portion at the center of the lower portion thereof. Further, on the upper part of the dash panel 2, an inclined surface 6 inclined to the front side extending in the vehicle width direction corresponding to a cowl box (not shown) is formed.

  A master back 7 of the brake device is installed on the left front surface of the dash panel 2. The master back 7 is installed corresponding to the position of a brake pedal (not shown) in the driver's seat, and is constituted by a relatively large substantially disk-shaped casing member.

  The above-described ECU 1 is attached to the front position of the master back 7 at a position separated from the dash panel 2 via the attachment bracket 11. The ECU 1 performs engine combustion control and the like. A control board such as a memory is provided in the ECU 1 and two connection sockets 1a and 1a into which a harness is inserted are provided on the upper surface.

  At the front position of the ECU 1, a power train transmission 8 that is horizontally disposed is disposed. The transmission 8 is a heavy structure, and when the vehicle collides with the front, receives a collision load and moves backward in the vehicle.

The mounting bracket 10 for mounting the ECU 1 will be described with reference to FIG.
The mounting bracket 10 is made of a metal press-molded part, and is provided with a flat base plate portion 11 for mounting the ECU 1 at the center, and two mounting piece portions that extend to the vehicle rear side and are fastened and fixed to the dash panel 2 on both sides thereof. 12 and 13 are bent.

  An assist piece 14 that extends downward and is fastened and fixed to the front side frame 3 is fixed to the lower left portion of the base plate 11 by welding. As will be described later, the assist piece 14 has a function of moving the ECU 1 upward in the event of a vehicle collision.

  3, 4, and 5 are perspective views of the mounting bracket 10 in a state where the ECU 1 is assembled. 3 is a right front perspective view, FIG. 4 is a left front perspective view, and FIG. 5 is a right rear perspective view.

  As described above, the mounting bracket 10 is attached to the flat base plate portion 11 on which the ECU 1 is installed, the two mounting pieces 12 and 13 that are attached to the dash panel 2 and extend to the vehicle rear side, and the front side frame 3. And an assist piece portion 14 extending downward.

  The base plate portion 11 is formed in a horizontally long rectangular shape, and the ECU 1 is fixed to the front surface by four fastening nuts N. The base plate portion 11 is formed so as to be inclined slightly forward while being assembled to the dash panel 2, and the ECU 1 is set to be inclined slightly forward.

  Each of the attachment pieces 12 and 13 includes a first attachment piece 12 extending rearward from the lower right end of the base plate portion 11 and a second attachment piece 13 extending rearward from the central portion of the left end of the base plate portion 11. The portions 12 and 13 include arm portions 12a and 13a extending in the front-rear direction, and flange portions 12b and 13b attached to the dash panel 2, respectively.

  Thus, by providing the two left and right mounting pieces 12, 13, the mounting bracket 10 can be configured as a both-end support, and the support rigidity of the ECU 1 can be increased. Further, in order to position the base plate portion 11 at a position separated from the dash panel 2 by the long arm portions 12a and 13a, the ECU 1 can be disposed in a dead space space at a position in front of the master back 7 and behind the transmission 8. it can.

  In the present embodiment, the ECU 1 is attached to the dash panel 2 by supporting the two attachment pieces 12 and 13 at both ends. However, if the support rigidity can be secured, the ECU 1 is attached to the dash panel 2. The ECU 1 may be attached to the dash panel 2 as a holding support.

  In addition, triangular bent beads 15 and 16 having ridge lines extending upward are formed at the center portions in the front-rear direction of the arm portions 12 a and 13 a of the first attachment piece 12 and the second attachment piece 13. The triangular bent beads 15, 16 are bent beads that bend the arms 12 a, 13 a in a “substantially U” shape in a side view when a load is applied to the base plate portion 11 from the lower front side.

  Further, through holes 17 and 18 through which stud bolts 21 (see FIG. 6) standing on the dash panel 2 are inserted are formed in the flange portions 12b and 13b of the first mounting piece portion 12 and the second mounting piece portion 13, respectively. ing. The first mounting piece 12 and the second mounting piece 13 are attached to the dash panel 2 by inserting the stud bolt 21 into the insertion holes 17 and 18 and fastening and fixing with the fastening nuts 19 and 20.

  The assist piece portion 14 is composed of a metal press-molded part having a plate thickness thicker than that of the base plate portion 11 and the attachment piece portions 12 and 13, and as shown in FIG. And a vertical piece 14b extending downward from the joint 14a.

  The joining portion 14a is formed in a substantially square shape, and joined to the lower left portion of the back surface of the base plate portion 11 at four welding points p.

  The vertical piece portion 14b is formed in a generally U shape when viewed from the side, and has an insertion hole 23 through which the fastening bolt 22 is inserted at the lower end. A vertical bead 24 extending in the vertical direction is formed at the center of the vertical piece 14b. Thereby, the rigidity with respect to an up-down direction load is improved.

As will be described later, the assist piece portion 14 has a function of transmitting the push-up force from the front side frame 3. Therefore, the push-up force transmission function is enhanced by increasing the plate thickness, and a vertical bead 24 is provided. In this way, this function is further enhanced.
Note that the vertical bead 24 may not be provided in the case where the vertical rigidity of the assist piece 14 can be sufficiently ensured only by increasing the plate thickness.

Next, the behavior change at the time of a vehicle front collision in the mounting structure of the ECU 1 configured as described above will be described with reference to FIGS. 6, 7, and 8.
FIG. 6 is a simplified side view showing the mounting structure of the ECU 1 before the collision.
As shown in this figure, the ECU 1 is disposed at a position slightly ahead of the front side frame 3 at a position in front of the dash panel 2 so as to be sandwiched between the master back 7 and the transmission 8.

  As can be seen from this figure, the ECU 1 is arranged in a forward tilted state with the upper part positioned on the front side. By arranging forwardly in this manner, the ECU 1 is effectively arranged utilizing the dead space space below the master back 7 and above the transmission 8.

  However, if the ECU 1 is disposed at such a position, the transmission 8 located in front of the vehicle at the time of a frontal collision of the vehicle moves backward due to the collision load and interferes with the ECU 1. Further, when receiving a larger collision load, the transmission 8 further moves backward in the vehicle and interferes with the master back 7 via the ECU 1.

  If the transmission 8 interferes with the ECU 1 in this way, the ECU 1 is damaged, and the ECU 1 cannot be reused, and the recording data of the ECU 1 thereafter cannot be analyzed. Furthermore, if it interferes with the master back 7, the problem that the dash panel 2 moves backward also arises.

  Therefore, in the present embodiment, the assist piece portion 14 is provided so that the ECU 1 moves upward during a frontal collision of the vehicle.

FIG. 7 is a simplified side view showing the mounting structure of the ECU 1 in the middle of the collision.
As shown in this figure, when a collision load from the front acts on the vehicle body, the front side frame 3 behaves such that the front portion 3a is relatively displaced upward. This is mainly a behavior that occurs because the front side frame 3 is provided so as to sink into a position below the dash panel 2, and is a displacement behavior that occurs in the general front side frame 3.

  Since the assist piece 14 is attached to the front side frame 3, the assist piece 14 also moves upward. As a result, the base plate portion 11 of the mounting bracket 10 also receives the push-up force from the assist piece portion 14 and moves upward. During this upward movement, the attachment piece 13 is also bent into a substantially square shape starting from the triangular bead 16 by receiving a pushing force.

  Thus, when the mounting bracket 10 moves upward, the ECU 1 fixed to the base plate portion 11 also moves upward, and even if the transmission 8 moves backward, interference with the ECU 1 can be avoided. Breakage can be prevented.

  In the present embodiment, the assist piece 14 is attached to the center of the inclined portion 3B of the front side frame 3. This is set at this position in consideration of a position that can be surely displaced upward at the time of a collision to ensure an upward movement amount. That is, in the horizontal part 3A formed in the front part of the front side frame 3, the displacement direction may be downward or left and right depending on the collision behavior, and the displacement behavior is unstable. On the other hand, in the lower portion 3C of the inclined portion, the upward movement amount enough to avoid the transmission 8 cannot be ensured because it is too close to the dash panel 2 to cause a large upward displacement. Therefore, the assist piece 14 is attached to the center of the inclined portion 3B of the front side frame 3.

FIG. 8 is a simplified side view showing the mounting structure of the ECU 1 in the late stage of the collision.
Further, when a large collision load is applied, the front side frame 3 behaves such that the front portion 3a is further displaced upward as shown in FIG. By this behavior, the assist piece 14 further transmits a push-up force to the base plate portion 11 to move the base plate portion 11 upward. At this time, the attachment piece 13 is further bent into a substantially U-shape.

  Thus, when the mounting bracket 10 is further moved upward, the ECU 1 is further moved upward, so that the ECU 1 is prevented from being sandwiched between the transmission 8 and the master back 7, and the transmission 8 is interposed via the ECU 1. Thus, interference with the master back 7 can be prevented, and retreat of the dash panel 2 can be suppressed.

Next, the effect of this embodiment is explained in full detail.
The on-vehicle component mounting structure of this embodiment includes an ECU 1 located in front of the dash panel 2 and above the front side frame 3, a mounting piece extending rearward from the ECU 1 and mounted on the dash panel 2, and the ECU 1. And an assist piece 14 that extends downward from the front side frame 3 and is attached to the front side frame 3 and transmits the displacement of the front side frame 3 when the vehicle collides to the ECU 1.

Thereby, the upper displacement at the time of the vehicle collision of the front side frame 3 is transmitted to the ECU 1 by the assist piece portion 14, and the ECU 1 moves upward at the time of the vehicle collision.
For this reason, the ECU 1 moves upward while avoiding the transmission 8 that moves backward from the front in the event of a vehicle collision, and can prevent interference with the transmission 8.

  Therefore, in the mounting structure in which the ECU 1 is mounted in the engine room ER, the interference between the ECU 1 and the transmission 8 is prevented in the event of a vehicle collision, the ECU 1 is prevented from being damaged, and the ECU 1 can be reused. Can be achieved.

  Instead of the ECU 1, an electronic control unit such as an ABS unit, a TRC unit, an AT unit, or a hybrid vehicle control unit may be attached.

In this embodiment, the front side frame 3 includes a horizontal portion 3A that extends substantially horizontally from the front side of the vehicle, and an inclined portion 3B that extends obliquely downward from the rear end of the horizontal portion 3A toward the bottom of the dash panel 2. And the lower end of the assist piece 14 is attached to the inclined portion 3B.
As a result, the ECU 1 can be moved upward by utilizing the displacement of the inclined portion 3B that attempts to rise upward from the vicinity of the lower portion of the dash panel 2 at the time of a vehicle collision.
Therefore, it is possible to obtain the push-up force from the inclined portion 3B of the front side frame 3 more reliably and move the ECU 1 upward.

Moreover, in this embodiment, the rigidity of the assist piece part 14 is made larger than the rigidity of the attachment piece parts 12 and 13 by increasing the plate thickness.
Thereby, the attachment piece parts 12 and 13 deform | transform first, without the assist piece part 14 deform | transforming at the time of a vehicle collision.
For this reason, the transmission function of the push-up force of the assist piece portion 14 is ensured, and the upward movement of the ECU 1 can be reliably caused.
Therefore, when the vehicle collides, the ECU 1 can be reliably moved upward, and interference with the transmission 8 can be prevented more reliably.

In this embodiment, the assist piece 14 is provided with a vertical bead 24 extending in the vertical direction.
Thereby, the up-down direction rigidity of the assist piece part 14 can be improved.
Therefore, with a simple configuration, the vertical rigidity of the assist piece portion 14 can be further increased, the push-up force transmission performance of the assist piece portion 14 can be enhanced, and the ECU 1 can be reliably moved upward.

In this embodiment, the mounting piece portions 12 and 13 are provided with triangular bent beads 15 and 16 whose rigidity is lowered.
As a result, when the push-up force is received from the assist piece 14, bending deformation occurs in the triangular bent beads 15, 16, and the attachment pieces 12, 13 are easily deformed.
Therefore, when the vehicle collides, the mounting pieces 12 and 13 are more reliably deformed, and the ECU 1 can be moved upward.

In addition, the structure shown in FIG. 9 can be considered as the fragile structure of the mounting pieces 12 and 13 instead of the triangular bent beads 15 and 16. For example, a structure in which an inverted triangular slit opening 30 is formed in the central portion of the mounting piece 13 as shown in (a), or a structure in which a circular through hole 31 is formed in the upper half as shown in (b), Further, a structure in which a thin portion 32 (hatched region) is formed in the upper half as shown in FIG.
In any structure, when the push-up force is received from the assist piece 14, the attachment pieces 12 and 13 can be bent and deformed in a substantially square shape.

Further, in this embodiment, the assist piece portion 14 is connected to the attachment piece portions 12 and 13 via the base plate portion 11.
Thereby, the pushing-up force of the assist piece part 14 can be reliably transmitted to the attachment piece parts 12 and 13, and the attachment piece parts 12 and 13 can be deformed more reliably. Further, since the push-up force is directly transmitted to the attachment pieces 12 and 13 without going through the ECU 1, the push-up force does not act on the ECU 1 during the upward movement.
Therefore, at the time of a vehicle collision, the attachment pieces 12 and 13 are reliably deformed, and the ECU 1 is more easily moved upward. Further, since the pushing force does not act on the ECU 1 during the upward movement, the ECU 1 is not stressed and the ECU 1 can be protected.

Further, in this embodiment, a base plate portion 11 to which the ECU 1 is attached is provided, and a first attachment piece portion 12 and a second attachment piece portion 13 extending toward the dash panel 2 are provided at both side positions of the base plate portion 11. The assist piece 14 is joined and fixed to the left end.
Thus, the ECU 1 can be attached to the dash panel 2 by both-end support by attaching the ECU 1 with the base plate portion 11 provided with the attachment pieces 12 and 13 on both sides, so that the support rigidity of the ECU 1 can be increased.
Further, by joining and fixing the assist piece 14 to the base plate portion 11, it is possible to reliably transmit the push-up force to the two attachment pieces 12, 13 and to reliably deform the attachment pieces 12, 13. be able to. In particular, even if the assist piece 14 is joined only to the left end as in the present embodiment, the push-up force can be transmitted to the separated first attachment piece 12 on the right side. Can be reliably deformed.

Therefore, the ECU 1 can be stably supported by the mounting bracket 10, and the ECU 1 can be reliably moved upward by the push-up force from the assist piece 14.
In the present embodiment, the mounting bracket 10 having the base plate portion 11 has been described. However, the present invention does not necessarily have the base plate portion 11. For example, the assist piece 14 and the mounting pieces 12 and 13 are included in the ECU 1 itself. May be provided directly.

  Next, a second embodiment will be described using the simplified side view of FIG. This simplified side view is a diagram corresponding to FIG. 6 of the first embodiment, and the same components are denoted by the same reference numerals and description thereof is omitted. In addition, the other prerequisite components are the same as those in the first embodiment.

  In this embodiment, by setting the attachment position of the assist piece 114 to the front side frame 3 at two front and rear positions (115, 116), not only the upward displacement of the front side frame 3, but also the angle at the time of the vehicle collision The change is also transmitted to the ECU 1, and the inclination angle of the ECU 1 is set to be an appropriate angle.

  Specifically, the lower end portion of the assist piece 114 is formed into a forked shape 114a, 114b, and the mounting portions 115, 116 (fastened to the front side frame 3 are fastened to the lower end portions 114a, 114b of the forked shape. Bolt insertion holes are provided.

  As described above, by providing a plurality of attachment portions 115 and 116 of the assist piece portion 114 apart from each other in the front-rear direction, the assist piece portion 114 can be integrally displaced even with respect to the angular displacement of the front side frame 3. it can.

  That is, in the first embodiment, since the assist piece 14 is attached to the front side frame 3 at one point, only the movement in the vertical direction is transmitted to the ECU 1, but in the second embodiment, Since the assist piece 114 is attached to the front side frame 3 at two points, the movement in the rotational direction (angle) can also be transmitted to the ECU 1.

  Therefore, in the normal state, the ECU 1 that is forwardly inclined can be moved so as to stand in the vertical direction as indicated by the two-dot chain line imaginary line 1 ′ in the event of a vehicle collision. Space can be made compact. Thereby, the retreating amount of the dash panel 2 due to the presence of the ECU 1 can also be reduced.

Therefore, according to this embodiment, the installation angle of the ECU 1 at the time of a vehicle collision can also be changed appropriately, and the amount of retreat of the dash panel 2 can be reduced.
Other functions and effects are the same as in the first embodiment.

As described above, in the correspondence between the configuration of the present invention and the above-described embodiment,
The side frame of the present invention corresponds to the front side frame of the embodiment,
Similarly,
In-vehicle parts correspond to ECU1,
The mounting legs correspond to the mounting pieces 12 and 13,
The displacement transmission legs correspond to the assist pieces 14, 114,
The reinforcing bead corresponds to the vertical bead 24,
The fragile portion corresponds to the triangular bent beads 15 and 16, the slit opening 30, the through hole 31, and the thin portion 32,
The mounting base portion corresponds to the base plate portion 11,
The present invention is not limited to the above-described embodiment, but includes an embodiment applied to an on-vehicle component mounting structure for any automobile.

The whole perspective view which looked at the 1st embodiment from the front diagonal upper part. FIG. The right front perspective view of the mounting bracket of the state which assembled | attached ECU. The left front perspective view of the mounting bracket in a state where the ECU is assembled. The right rear perspective view of the mounting bracket in a state where the ECU is assembled. The side surface simplification figure which showed the attachment structure of ECU before a collision. The side surface simplification figure which showed the attachment structure of ECU in the middle of a collision. The side surface simplification figure which showed the attachment structure of ECU in the collision late stage. The side surface simplification figure which showed the other weak structure of the attachment piece part. The side surface simplification figure which showed the attachment structure of ECU of 2nd embodiment.

Explanation of symbols

1 ... ECU
2 ... Dash panel 3 ... Front side frame 8 ... Transmission 10 ... Mounting bracket 11 ... Base plate portion 12 ... First mounting piece portion 13 ... Second mounting piece portions 14, 114 ... Assist piece portions 15, 16 ... Triangular folded bead 24 ... Vertical beads

Claims (8)

An in-vehicle component mounting structure for an automobile,
A dash panel that forms the rear wall of the engine room,
A side frame extending rearward from the vehicle front side of the dash panel and extending downward of the dash panel to the vehicle rear side;
An in-vehicle component located in front of the dash panel and above the side frame;
A mounting leg extending rearward from the vehicle-mounted component and attached to the dash panel;
A vehicle-mounted component mounting structure for an automobile, comprising: a displacement transmission leg portion that extends downward from the vehicle-mounted component and is mounted on a side frame and transmits a displacement of the side frame at the time of a vehicle collision to the vehicle-mounted component. A horizontal portion that extends substantially horizontally from the front side of the vehicle;
An inclined portion extending obliquely downward from the rear end of the horizontal portion toward the lower side of the dash panel,
The on-vehicle component mounting structure for an automobile according to claim 1, wherein the displacement transmission leg portion is attached to the inclined portion. The in-vehicle component mounting structure for an automobile according to claim 1 or 2, wherein a plurality of mounting points on the side frame of the displacement transmission leg portion are set in front and rear. The in-vehicle component mounting structure for an automobile according to any one of claims 1 to 3, wherein the rigidity of the displacement transmission leg is greater than the rigidity of the mounting leg. The in-vehicle component mounting structure for an automobile according to claim 4, wherein a reinforcing bead extending in a vertical direction is provided on the displacement transmission leg portion. The in-vehicle component mounting structure for an automobile according to claim 4, wherein the mounting leg portion is provided with a weakened portion having reduced rigidity. The in-vehicle component mounting structure for an automobile according to any one of claims 1 to 6, wherein the displacement transmission leg is connected to the mounting leg. A plate-shaped mounting base portion for mounting the in-vehicle component
The mounting legs are provided on both sides of the mounting base so as to extend toward the dash panel,
The in-vehicle component mounting structure for an automobile according to any one of claims 1 to 6, wherein the displacement transmitting leg portion extending toward the side frame is provided on the mounting base portion.

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