JP4231961B2 - Automotive front structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a front structure of an automobile.
[0002]
[Prior art]
The following Patent Document 1 is known for a front body structure of an automobile provided with a crash pipe that absorbs a shock at the time of a vehicle collision at the front end of the front side frame. As shown in FIG. 7, this is composed of a shroud 101, a front side frame 121, a bumper reinforcement 105, a crash pipe 105 a, a bumper face 106, and others, and the front side frame 121 is interposed via a vehicle body fastening portion 113. The crush tube 105a having the flange portion 105b is fastened.
[0003]
By the way, from the viewpoint of improving safety at the time of a collision in recent automobiles, a vehicle front structure having high shock absorption is essential. In addition, since automobiles with a wide interior space are desired by users, the length of the front part of the automobile has become shorter, and accordingly, the space in the engine room at the front of the automobile is becoming narrower. Therefore, it is required to improve both the vehicle front structure and the parts layout at the front of the vehicle.
[0004]
On the other hand, for the purpose of improving the fuel efficiency of the engine, for example, there is a trend to replace the oil pump for power steering with a motor driven oil pump (so-called electric power steering pump) instead of an engine hydraulically driven oil pump. As described above, when a vehicle part that has not been used in the past is newly arranged, the space in the engine room is further narrowed, so that further improvement in the part layout is required.
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-240744
[Problems to be solved by the invention]
As described above, the present invention allows the vehicle parts to be laid out adjacent to the front end portion of the front side frame while maintaining the function of the crash pipe, and the vehicle parts are supported by the front crash pipe to improve the layout of the vehicle front part. The problem is to improve.
[0007]
[Means for Solving the Problems]
The first structure of the front structure of the automobile according to the present invention is disposed in the front-rear direction on the side of the vehicle body, and has a front side frame having a flange at the front end thereof, and disposed in front of the front side frame. In addition, in the front structure of an automobile in which a crash pipe having a flange at its rear end is flange-connected, a notch recess is provided in the vehicle outer side of each flange of the front side frame and the crash pipe, and at least a vehicle part is provided in the recess. A part of the crush tube is arranged in close proximity so that a reinforcing member is provided at the rear end of the outer surface of the crash tube, and at least a part of the vehicle component is supported by the reinforcing member.
[0008]
According to the first configuration, at least a part of the vehicle component is supported by the reinforcing member provided at the rear end portion of the vehicle outer surface of the crash tube. When the crash tube collides with the front part of the vehicle, if it is crushed uniformly from the front end to the rear end, the shock absorption performance can be sufficiently exerted, so electrical components are provided near the front end of the crash pipe The vehicle parts obstruct uniform crushing. Therefore, if at least a part of the vehicle parts is provided at the rear end of the vehicle outer surface of the crash pipe as in the first configuration, the crash will be absorbed while being crushed from the front end toward the rear end in the event of a vehicle collision. The performance of the tube can be maintained.
[0009]
Moreover, in order to exhibit a shock absorbing function, the crush tube is generally a structure having a relatively small rigidity among the automobile structures. For this reason, when a vehicle part is directly supported by the crash pipe, the crash pipe may be deformed by the weight or vibration of the supported vehicle part. However, as in the first configuration, a reinforcement member is provided on the crash pipe to reinforce it. When the vehicle parts are supported by the member, the deformation of the crash pipe can be prevented and the shock absorbing performance at the time of collision can be maintained. At that time, as described above, since the reinforcing member is provided at the rear end portion of the crash pipe, the impact absorbing performance is not hindered.
[0010]
In addition, according to the first configuration, a notch recess is provided in the vehicle outer side of the flange connection portion, and the vehicle parts are arranged close to each other using the space formed by the notch recess. Therefore, the vehicle parts can be arranged compactly close to the side of the connecting part of the front side frame and the crash pipe, the layout of the front part of the automobile can be improved, and the vibration of the vehicle parts themselves is also reduced and the durability reliability is improved. To do. In addition, since the deformation moment given to the crash pipe by the vehicle parts as the vehicle parts are arranged close to the crash pipe can be reduced, the shock absorbing performance of the crash pipe at the time of the vehicle collision can be maintained.
[0011]
The second configuration according to the present invention is such that the lower end of the reinforcing member is connected to the lower surface of the crash tube.
[0012]
According to the second configuration, the reinforcing member is folded and connected to the rear end of the outer surface of the crash tube on the vehicle outer side and the lower surface of the crash tube described in the first configuration, that is, the reinforcing member is the crash tube. It is not connected in the front-rear direction, but is connected in two dimensions in the up-down direction and the vehicle width direction at the rear part of the crash tube, so it crushes from the front end to the rear end in the event of a vehicle collision However, it is possible to maintain the performance of the crash tube that absorbs shocks.
[0013]
In a third configuration relating to the present invention, the vehicle component is an electrical component, and a holding portion for holding a harness member connected to the electrical component is formed in the vicinity of the reinforcing member.
[0014]
According to the 3rd structure, since it is set as the structure by which the harness member holding | maintenance part is formed in the vicinity upper part of the reinforcement member, the harness member connected with the electrical component can be hold | maintained, without increasing a number of parts.
[0015]
According to a fourth configuration related to the present invention, the vehicle component is an electrical component, and an earth connection portion for connecting an earth member of the electrical component is formed in the vicinity of the reinforcing member.
[0016]
According to the fourth configuration, since the ground connection portion is formed above the reinforcing member, it is possible to connect the ground of the electrical component which is a vehicle component to the vehicle body without increasing the number of components.
[0017]
According to a fifth configuration of the present invention, the electrical component is supported by the reinforcing member via the bracket, the connector portion faces the recess from the main body side of the electrical component, and the reinforcing member of the crash tube is The bracket protrudes in the direction, and the bracket is connected to the lower surface of the connector portion and the reinforcing member.
[0018]
According to the fifth configuration, since the protruding direction of the connector part from the side part of the main body of the electrical component faces the notch recess and is in the direction of the reinforcing member of the crash tube, and the bracket can be compacted, the layout As a result, the harness and the ground can be easily routed to the reinforcing member.
[0019]
【The invention's effect】
As described above, according to the present invention, while maintaining the function of the crash pipe, the vehicle part is laid out adjacent to the front end portion of the front side frame, and the vehicle part is supported by the crash pipe in front of the vehicle part. Layout can be improved.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. First, FIG. 1 which is a perspective view showing a connected state of the bumper reinforcement, the crash pipe, and the front side frame will be described. 1A is a perspective view from the right front side of the vehicle, and FIG. 1B is a perspective view from the right rear side of the vehicle (however, the front side frame is not shown). As shown in FIG. 1 (A), the front structure of the automobile of the present invention includes a bumper reinforcement 1 disposed in the vehicle width direction in the rear of a bumper face (not shown), and a bumper. The left crash pipe 2L and the right crash pipe 2R that are fastened at the left and right ends of the reinforcement 1 and extend rearward of the vehicle (hereinafter referred to simply as the crash pipe without attaching left and right), and fastened to the rear of the vehicle, respectively. It has front side frames 4L and 4R arranged toward the front.
[0021]
In the following embodiments, a left front structure from the front of the vehicle will be described. The rear end of the crash pipe 2L is provided with a flange 2La, while the front end of the front side frame 4L is also provided with a flange 4La. The crash pipe 2L and the front side frame 4L are formed with a plurality of fastening holes H formed on both flange surfaces. Is fastened via a fastening member (not shown). Similarly, the crash pipe 2R is also provided with a flange 2Ra at the rear end thereof, and a flange 4Ra is also provided at the front end of the front side frame 4R. The crash pipe 2R and the front side frame 4R are provided on both flange surfaces. It is fastened via a fastening member (not shown) using a plurality of formed fastening holes H.
[0022]
As shown in FIG. 1B, a reinforcing member 8 is provided on the vehicle outer surface of the crash pipe 2L, and a notch recess 2Lb is formed in the flange 2La of the crash pipe 2L. . This notch recess is also formed in the flange 4La of the front side frame 4L, which will be described in detail later with reference to FIG. Reference numeral 6 in FIGS. 1 (A) and 1 (B) denotes a shroud support bracket for fixing a shroud (not shown), which is provided on the inner surface of the crash pipe, and the crash pipe in the event of a vehicle collision. The shroud can also be retracted as it retracts while being crushed toward the rear of the vehicle.
[0023]
Next, the reinforcing member 8 will be described with reference to FIG. 2 which is a view in the direction of arrow A in FIG. First, the crush tube 2L and the front side frame 4L are fastened by a fastening member (not shown) being inserted into the fastening hole H with the rear surface of the flange 2La provided at the rear end thereof in contact with the front surface of the flange 4La. . The flange 2La and the flange 4La are each cut out in the same shape at the vehicle outer side toward the vehicle inner side, whereby a notch recess 2Lb is provided in the flange 2La and a notch recess 4Lb is provided in the flange 4La. The flange 2La is connected by laser welding at the hatched portion W in the drawing at the rear end portion of the crash tube 2La.
[0024]
A reinforcing member 8 is fixed to the front portion of the flange 2La, that is, the rear side vehicle outer surface 2Ls of the crush tube 2L by vertical welding (W) on the base surface 8a. The rear portion and the rear portion are integrally formed with an edge portion 8b projecting in the vehicle outer direction, and an extending portion 8c extending further upward is formed from the upper edge portion 8b.
[0025]
Further, the extending portion 8c is provided with holding holes 8d and 8e for connecting a part of vehicle parts described later.
[0026]
Further, a rubber mount member M is inserted in the lower portion of the base surface 8a of the reinforcing member 8 so as to be in contact with the base surface 8a.
[0027]
As described above, the reinforcing member 8 is fixed to the vehicle outer surface 2Ls of the crash pipe 2L. However, in order to support a vehicle component having a certain weight, it is necessary to further increase the support rigidity. The reinforcing member 8 is connected and supported also on the bottom surface side. Next, connection support of the reinforcing member 8 to the bottom surface side of the crash tube 2L will be described with reference to FIG. 3 which is a view in the direction of arrow B in FIG. In FIG. 3, the bracket 14 with the rubber mount M described above is additionally shown (vehicle parts are not shown in FIG. 3). The bracket 14 with the rubber mount M is a member on the vehicle component side described with reference to FIG. 4, and is fastened to the reinforcing member 8 of the crash pipe 2L together with the vehicle component.
[0028]
As shown in FIG. 3, the reinforcing member 8 has a base surface 8a connected to the vehicle outer surface 2Ls of the crush tube 2L, and a lower end of the base surface 8a is folded back toward the vehicle inner side to thereby provide a bottom surface 2Lu of the crush tube 2L. A support surface portion 8u extending to is provided, and the front and rear end surface portions of the support surface portion 8u and the bottom surface 2Lu of the crash tube 2L are connected and supported by welding (W).
[0029]
As described above, the reinforcing member 8 is welded to the vehicle outer side surface 2Ls in the longitudinal direction and to the bottom surface 2Lu in the vehicle width direction at the rear portion of the crash tube 2L. That is, the reinforcing member 8 is not welded in the front-rear direction of the crash tube 2L. Therefore, at the time of a vehicle collision, the crash pipe 2L is crushed from the front part toward the rear part while absorbing the shock, but since the crushing is not inhibited, the function of absorbing the shock can be maintained.
[0030]
As briefly described above, the bracket 14 for supporting a part of the vehicle component extends from the front side frame 4L side to the crash pipe 2L side and is connected to the reinforcing member 8. The bracket 14 includes a bracket bottom surface 14u that is substantially horizontal and extends from the front side frame 4L side to the crash tube 2L side, and a front surface portion that is bent in a substantially L shape so as to face upward from the front end and faces in the front-rear direction. 14a and a support surface portion 14b bent in a substantially L shape so as to be directed forward from the inner end in the vehicle width direction of the front surface portion 14a. The bracket bottom surface 14u is connected to a lower surface of a connector of a vehicle component described later by a fastening member T using a fastening hole (not shown).
[0031]
The support surface portion 14b is provided with a substantially U-shaped cut portion (not indicated), and the rubber mount member M described in FIG. 2 has a substantially U-shape of the support surface portion 14b in a groove portion MK provided at a substantially central portion in the thickness direction. The state cut portion is held. Thereby, the vibration transmission from the vehicle body side to the bracket 14 is suppressed.
[0032]
Next, a support structure for vehicle parts will be described. FIG. 4 is a perspective view showing an external appearance of an electric hydraulic pump for power steering (hereinafter referred to as a PS electric hydraulic pump) as an example of an electrical component that is a vehicle component related to the present invention. The PS electric hydraulic pump 20 includes a main body 22 in which an electric motor and a pump (not shown) are incorporated, a sub tank 28 provided above the main body 22, and a sub tank hose that connects the main body 22 and the sub tank 28. 28h, a hose 29 that extends from the vehicle rear side of the main body to supply or receive oil to the steering device, a connector main body that protrudes in the horizontal direction from the side of the main body and receives electricity for driving the electric motor The connector 24 is configured to extend upward from the connector 24 and the connector body 24 to receive the harness.
[0033]
From the left and right rear surfaces of the main body 22, brackets 30 that are fastened and supported on the vehicle body side are extended in the left-right direction, and rubber mount members 30 a and 30 b are provided at their ends.
[0034]
The bottom surface of the connector main body 24 is fastened to the bracket bottom surface 14u of the bracket 14 (see FIG. 3). As described with reference to FIG. 3, the rubber mount member M is provided on the support surface portion 14 b of the bracket 14, and the rubber mount member M is supported in contact with the base surface portion 8 a of the reinforcing member 8. (See FIG. 5).
[0035]
FIG. 5 is a side view of the PS electric hydraulic pump 20 supported by the reinforcing member 8 and the like from the vehicle outer side, and FIG. 6 is a cross-sectional view taken along the line YY in FIG. As shown in FIGS. 5 and 6, the main body portion 22 of the PS electric hydraulic pump 20 is disposed close to the front end portion of the front side frame, and the connector main body portion 24 extends from the front portion of the main body portion 20. The front side frame 4L is disposed so as to protrude forward along the crash pipe 2L from the front end portion of the front side frame 4L. Further, the bracket 14 described above is fastened to the lower surface of the connector body 24, and the front side frame The front end of 4L is adjacent to the crush tube 2L and extends forward, and is connected to the reinforcing member 8.
[0036]
Here, as shown in FIG. 6, the front side frame 4L and the flange portions 2La and 4La of the crush tube 2L are provided with notch recesses 2Lb and 4Lb deeper than the inner portion, respectively, and the main body portion facing the flange portion side. 20, the connector main body 24 and the bracket 14 are disposed so as to face the recesses 2 </ b> Lb and 4 </ b> Lb. As a result, the main body 22, the connector main body 24, and the bracket 14 can be arranged close to each other between the front end of the front side frame 4L and the crash pipe 2L. It is possible to improve the support rigidity and layout performance of the vehicle parts while maintaining them.
[0037]
Further, as shown in FIG. 5, a connector 26 is provided upward from the connector main body 24 provided so as to protrude forward from the main body 22 of the PS electric hydraulic pump 20. A plurality of harnesses HN for driving the PS electric hydraulic pump 20 and one ground wire E are connected inside the connector 26 and extend upward. Among these, the plurality of harnesses HN are bundled by the clip member HC, and the holding hole 8d formed in the extending portion 8c integrally provided above the reinforcing member 8 connected to the crash pipe 2L. (See FIG. 2) is held by a holding fastening member (no reference).
[0038]
On the other hand, the terminal portion TN of the ground wire E is held in a holding hole 8e (see FIG. 2) similarly formed in the extending portion 8c by a holding fastening member (not indicated).
[0039]
As described above, the plurality of harnesses HN and the single ground wire E are positioned at a short distance from the connector 26 and are held by the holding holes 8d and 8e without increasing the number of parts. In addition, the PS electric hydraulic pump 20 is excellent in durability and reliability because there is no significant vibration.
[0040]
Further, as described above, the bottom surface of the connector main body 24 is fastened to the bracket bottom surface 14 u of the bracket 14 by the fastening member T. The support surface portion 14b extending in the front-rear direction from the bracket bottom surface 14u via the front surface portion 14a is sandwiched by the rubber mount member M, and the rubber mount member M is supported in contact with the base surface portion 8a of the reinforcing member 8. .
[0041]
Since the connector main body 24 is supported by the reinforcing member 8 with the above structure, vibration transmission from the vehicle body to the connector main body 24 is suppressed, and the PS electric hydraulic pump 20 having excellent durability and reliability is obtained. Yes.
[0042]
Further, a bracket 30 is fixed to the PS electric hydraulic pump 20 at the side surface portion 22 s of the main body portion 22. The bracket 30 extends rearward and then is divided into a right and left inclined state (see FIG. 4), and rubber mount members 30a and 30b are provided at respective end portions. These rubber mount members 30a and 30b are connected and fixed to a PS electric hydraulic pump support surface portion 32 extending so as to extend from the front side frame 4L toward the vehicle outer side.
[0043]
Thus, the main body portion 22 of the PS electric hydraulic pump 20 is also supported at the rear portion thereof by the PS electric hydraulic pump support surface portion 32 which is a vehicle body member via the rubber mount members 30a and 30b. Vibration transmission to the main body 22 of the electric hydraulic pump 20 is suppressed, and the structure has excellent durability and reliability.
[0044]
Although the present embodiment has been described above, the present invention is not limited to this, and the electrical components may be supported by the right crash tube and the front side frame from the front of the vehicle, or both the left and right sides. The electrical component may be a control unit for an engine system or a braking system, a sensor unit for detecting information inside or outside the vehicle, and a control unit for integrating these.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a connected state of a crush tube and a front side frame. FIG. 2 is a view taken along an arrow A in FIG. 1B. FIG. 3 is a view taken along an arrow B in FIG. FIG. 5 is a side view showing the support state of the electrical component according to the present invention. FIG. 6 is a cross-sectional view taken along the line YY in FIG. 5. FIG. Figure [Explanation of symbols]
2L ... Crash tube 2La ... Crash tube flange 2Lb ... Notch recess 4L in the crash tube flange ... Front side frame 4La ... Front side frame flange 4Lb ... Notch in the front side frame flange Recess 8 ... Reinforcing member 8d ... Harness member holding part 8e ... Earth connection part 14, 30 ... Bracket 20 ... Electrical component (PS electric hydraulic pump)
24 ... Connector HN ... Harness E ... Earth M, 30a, 30b ... Rubber mount

Claims (5)

A front side frame that is disposed in the front-rear direction on the side of the vehicle body and has a flange at the front end thereof, and a crash pipe that is disposed in front of the front side frame and has a flange at the rear end thereof are flange-connected. In the front structure of the car,
The front side frame and the flange of each of the crash pipes are provided with notch recesses on the vehicle outer side, and are arranged close to each other so that at least a part of the vehicle parts face the recesses, and A front structure of an automobile, wherein a reinforcing member is provided at a rear end portion, and at least a part of the vehicle component is supported by the reinforcing member. 2. The front structure of an automobile according to claim 1, wherein a lower end of the reinforcing member is connected to a lower surface of the crash pipe. 3. The automobile according to claim 1, wherein the vehicle component is an electrical component, and a holding portion for holding a harness member connected to the electrical component is formed in the vicinity of the reinforcing member. Front structure. 3. The front of an automobile according to claim 1, wherein the vehicle component is an electrical component, and a ground connection portion for connecting a ground member of the electrical component is formed in the vicinity of the reinforcing member. Part structure. 5. The crush tube reinforcing member according to claim 3, wherein the electric component is supported by the reinforcing member via a bracket, a connector portion faces the concave portion from a main body side portion of the electric component, and A front structure of an automobile, wherein the bracket is connected to the lower surface of the connector portion and the reinforcing member.

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