JP2018024331A - Vehicle front structure - Google Patents

Abstract

[Problem] The object of the present invention is to eliminate waste of reinforcing members in vehicles with a large height dimension from the top of the suspension tower to the top of the engine room side wall panel. [Solution] The present invention is a vehicle front structure comprising suspension towers (24) provided on both the left and right sides of the engine room ER, engine room ER side wall panels (27) provided on the outside of the suspension towers (24) in the vehicle width direction, and reinforcing members (32, 35) that reinforce the engine room ER side wall panels (27), with multiple reinforcing members (32, 35) extending in the fore-and-aft direction of the vehicle and arranged in a vertical line. [Selected Figure] Figure 4

Description

  The present invention includes a suspension tower provided on both right and left sides in an engine room, a side wall plate of the engine room provided on the outer side in the vehicle width direction of the suspension tower, and a vehicle front portion provided with a reinforcing member that reinforces the side wall plate. Concerning structure.

  A technique related to a vehicle front structure is described in Patent Document 1. The technology of Patent Document 1 is a front structure of a sedan type passenger car. As shown in FIG. 5, suspension towers 101 are provided at the left and right sides of the engine room ER at the rear part of the engine room ER of the passenger car. Further, a side wall plate 102 of the engine room ER is provided outside the suspension tower 101 in the vehicle width direction, and the side wall plate 102 is reinforced by a reinforcing member 104 from the outside in the vehicle width direction. The reinforcing member 104 reinforces the side wall plate 102 by constituting a cylindrical portion T extending in the vehicle front-rear direction together with the side wall plate 102 of the engine room ER. The rear end portion of the tubular portion T is fixed to a front pillar 103 which is a column in the front part of the passenger compartment, and the side surface of the tubular portion T supports the upper portion of the suspension tower 101 from the outside in the vehicle width direction. Further, a hood hinge (not shown) of the engine hood is attached to the upper rear side of the cylindrical portion T.

  Here, in the sedan type passenger car, since the vehicle height is generally low, the height dimension of the side wall plate 102 of the engine room ER is kept low. For this reason, the upper part of the side wall plate 102 of the engine room ER is substantially equal to the ceiling part 101u (upper part) of the suspension tower 101. On the other hand, in the case of a one-box type passenger car with a high vehicle height, as shown in FIGS. 6 and 7, the upper portion of the side wall plate 102 of the engine room ER (the portion that supports the hood hinge 105) is the ceiling portion of the suspension tower 101. Higher than 101u. For this reason, the height dimension of the reinforcing member 104 that reinforces the side wall plate 102 of the engine room ER also increases, and the height dimension of the cylindrical portion T constituted by the side wall plate 102 and the reinforcing member 104 also increases.

JP 2012-166742 A

  A relatively large force is applied to the cylindrical portion T at a portion (lower portion) that supports the upper portion of the suspension tower 101 and a portion (upper portion) that supports the hood hinge 105. For this reason, if the intensity | strength of the upper part and the lower part of the cylinder part T satisfies required intensity | strength, it is also possible to reduce the intensity | strength of another part (height direction center part). However, the cylindrical portion T is generally manufactured by press molding or the like using a material having a certain thickness. For this reason, the portion that does not require relatively high strength in the cylindrical portion T is also formed with the same thickness as the upper and lower portions that require relatively high strength, which is preferable from the viewpoint of effective use of the material. Absent. In particular, the larger the height dimension of the cylindrical portion T, the more wasteful parts of the material.

  The present invention has been made to solve the above-mentioned problems, and the problem to be solved by the present invention is to provide a reinforcing member in a vehicle having a large height dimension from the upper part of the suspension tower to the upper part of the side wall plate of the engine room. Is to eliminate waste.

  The above-described problems are solved by the inventions of the claims. The invention according to claim 1 is a suspension tower provided on both left and right sides in the engine room, a side wall plate of the engine room provided on the outer side in the vehicle width direction of the suspension tower, and a reinforcing member that reinforces the side wall plate of the engine room. A plurality of the reinforcing members are provided in a state of extending in the vehicle front-rear direction and aligned in the vertical direction.

  According to the present invention, the plurality of reinforcing members that reinforce the side wall plate of the engine room are provided in a state of extending in the vehicle front-rear direction and aligned in the vertical direction. For this reason, in a vehicle having a large height from the upper portion of the suspension tower to the upper portion of the side wall plate of the engine room, for example, the reinforcing member that supports the hood hinge and the reinforcing member that supports the upper portion of the suspension tower can be separated. That is, the reinforcing member can be provided only at the upper and lower necessary places. For this reason, compared with the case where one big reinforcement member is used like before, the waste of a reinforcement member can be reduced.

  According to the invention of claim 2, a plurality of cylindrical portions extending in the vehicle front-rear direction are formed by the side wall plate of the engine room and the plurality of reinforcing members. For this reason, the collision load at the time of the vehicle front collision can be efficiently transmitted to the vehicle skeleton.

  According to the invention of claim 3, the upper cylindrical portion is provided at the height position of the belt line. For this reason, the hood hinge of the engine hood can be supported by the upper cylindrical portion.

  According to invention of Claim 4, the lower cylinder part is provided in the height position of the upper part of a suspension tower. For this reason, the upper part of the suspension tower can be supported by the lower cylinder part.

  According to the invention of claim 5, the front end positions of the upper cylinder part and the lower cylinder part are matched with the front end position of the front wheel. For this reason, the collision load is applied to the upper and lower cylinder portions at the timing when the collision load is applied to the front wheels at the time of the vehicle front collision.

  ADVANTAGE OF THE INVENTION According to this invention, the waste of a reinforcement member can be eliminated in the vehicle with a large height dimension from the upper part of a suspension tower to the upper part of the side wall board of an engine room.

It is a model perspective view of a vehicle provided with the front part structure concerning Embodiment 1 of the present invention. It is the perspective view which looked at the inside of the engine room of the vehicle from the left front. FIG. 2 is a schematic perspective view in a state where a fender panel, an engine hood, and the like are removed from the schematic perspective view shown in FIG. 1. FIG. 4 is a vertical sectional view taken along arrows IV-IV in FIGS. 2 and 3. It is a perspective view showing the conventional vehicle front part structure. It is a side view showing the conventional vehicle front part structure. It is a longitudinal cross-sectional view (VII-VII arrow directional cross-sectional view of FIG. 6) showing the conventional vehicle front part structure.

[Embodiment 1]
Hereinafter, the vehicle front structure according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4. The vehicle front structure according to the present embodiment is a front structure in a one-box type passenger car or the like having a high vehicle height. Here, the front, rear, left, right, and top and bottom shown in the figure correspond to the front, back, left, right, and top and bottom of the passenger car (hereinafter referred to as vehicle).

<About the front structure outline of the vehicle 10>
As shown in FIG. 1, entrances 13 that are opened and closed by a front door 12 are provided on the left and right sides of the body of the vehicle 10. A front pillar 14 is erected at the front edge of the entrance 13 and the front part of the roof panel (not shown) is supported by the left and right front pillars 14. In the front pillar 14, a pillar support portion 14 d below the belt line BR of the vehicle 10 is covered with a fender panel 15. And the design part 14e of the front pillar 14 located above the said fender panel 15 is comprised so that the design surface 15e of the fender panel 15 may be followed. A windshield 16 is provided at a position surrounded by the design portions 14e of the left and right front pillars 14 and the roof panel (not shown). An engine hood 17 is provided between the left and right fender panels 15 so that the engine room ER (see FIGS. 2 to 4) of the vehicle 10 can be opened and closed.

  In the engine room ER, as shown in FIG. 2, wheel houses 20 that respectively store the left and right front wheels 20 t (see FIG. 4) are provided at positions outside the left and right front side members 21 in the vehicle width direction. 2 and the like show the right side of the engine room ER, and the left side is omitted. The wheel house 20 includes a front apron panel 23 and a rear suspension tower 24. As shown in the longitudinal sectional view of FIG. 4, the suspension tower 24 includes a ceiling portion 24t to which the upper end portion of the shock absorber 24s is connected at the upper end position. The rear end edge of the suspension tower 24 is connected to a dash panel 25 that partitions the engine room ER and the vehicle compartment R as shown in FIG. As shown in FIGS. 2 and 3, an upper member 27 that is an upper side wall plate in the engine room ER is provided outside the apron panel 23 and the suspension tower 24 in the vehicle width direction.

  The upper member 27 is formed in a flat box shape having an opening on the outer side in the vehicle width direction. And the rear-end edge of the upper member 27 is connected to the pillar support | pillar part 14d of the front pillar 14, as shown in FIG. As shown in FIGS. 2 and 3, a cowl panel 29 that supports the windshield 16 from below is provided between the rear end portions of the left and right upper members 27 so as to extend in the vehicle width direction. It has been. Further, an upper reinforcing panel 32 and a lower reinforcing panel 35 are provided outside the upper member 27 in the vehicle width direction, as shown in FIGS. The upper member 27, the upper reinforcing panel 32, and the lower reinforcing panel 35 are covered from the outside in the vehicle width direction by the fender panel 15 (see FIG. 1), as shown in FIG.

<About the upper reinforcing panel 32>
As shown in FIGS. 3 and 4, the upper reinforcing panel 32 is a panel that reinforces the upper portion of the upper member 27, and is configured to support the hood hinge 40 together with the upper member 27. As shown in FIG. 4, the upper reinforcing panel 32 is formed in a substantially L-shaped cross section by a lower horizontal plate portion 321 and a vertical plate portion 322 so as to extend in the vehicle front-rear direction. The upper end flange portion 322 f of the vertical plate portion 322 of the upper reinforcing panel 32 is joined to the upper end flange portion 272 f of the upper end horizontal plate portion 272 of the upper member 27. Further, the flange portion 321 f of the lower horizontal plate portion 321 of the upper reinforcing panel 32 is joined to the vertical plate portion 271 of the upper member 27. As a result, a rectangular tube portion T1 extending in the vehicle front-rear direction is formed at the upper end portion of the upper member 27.

  The upper surface of the rectangular tube portion T <b> 1, that is, the upper end horizontal plate portion 272 of the upper member 27 is provided at a height position substantially equal to the belt line BR of the vehicle 10. And the hood hinge 40 is attached to the upper surface rear part of the upper end horizontal wall part 272 of the upper member 27 as shown in FIG.3, FIG.4 etc. FIG. The hood hinge 40 is configured so that the base end portion of the engine hood 17 can be connected to the upper end lateral wall portion 272 of the upper member 27 in a state in which the base hood portion can be turned up and down.

  As shown in FIG. 3, the rear edge of the upper reinforcing panel 32 is connected to the pillar support 14 d of the front pillar 14 together with the rear edge of the upper member 27. Further, the front end position of the upper reinforcing panel 32 is held at substantially the same position as the front end position of the front wheel 20 t together with the front end position of the upper member 27. For this reason, a collision load at the time of a vehicle front collision is applied to the rectangular tube portion T1 constituted by the upper reinforcing panel 32 and the upper portion of the upper member 27 at substantially the same timing as the front wheel 20t. And the said collision load comes to be transmitted to the front pillar 14 by the said square cylinder part T1. Here, the rectangular tube portion T1 constituted by the upper reinforcing panel 32 and the upper portion of the upper member 27 has a height dimension set within a range of 1 to 1.2 times the width dimension. That is, the upper reinforcing panel 32 corresponds to the upper reinforcing member of the present invention, and the square tube portion T1 corresponds to the upper tube portion of the present invention.

<About the lower reinforcing panel 35>
As shown in FIGS. 3 and 4, the lower reinforcing panel 35 is a cylindrical body disposed below the upper reinforcing panel 32 and is provided substantially parallel to the upper reinforcing panel 32. The lower reinforcing panel 35 is fixed to the lower vertical wall 271d of the vertical plate portion 271 of the upper member 27, and is configured to support the upper portion of the suspension tower 24 from the outside in the vehicle width direction of the suspension tower 24. The lower reinforcing panel 35 is formed in a rectangular tube shape by combining a groove-shaped plate portion 352 having a substantially U-shaped cross section and a lid-shaped flat plate portion 353 that closes a side opening of the groove-shaped plate portion 352. Has been. The bottom plate 352 b of the groove-shaped plate portion 352 of the lower reinforcing panel 35 is fixed to the upper portion of the suspension tower 24 together with the lower vertical wall 271 d of the vertical plate portion 271 of the upper member 27.

  As shown in FIG. 3, the rear end edge of the lower reinforcing panel 35 is connected to the pillar support 14 d of the front pillar 14 together with the rear end edge of the upper member 27. Further, the front end position of the lower reinforcing panel 35 is held at substantially the same position as the front end position of the front wheel 20 t together with the front end position of the upper member 27. For this reason, a collision load at the time of a vehicle front collision is applied to the lower reinforcing panel 35 at substantially the same timing as the front wheels 20t. The collision load is transmitted to the front pillar 14 by the lower reinforcing panel 35. Here, the lower reinforcing panel 35 has a width dimension set in a range of 1 to 1.2 times the height dimension. That is, the lower reinforcing panel 35 corresponds to a reinforcing member and a lower cylinder portion in the present invention.

<Advantages of the vehicle front structure according to this embodiment>
According to the vehicle front structure according to the present embodiment, the upper reinforcing panel 32 (reinforcing member) that supports the hood hinge 40 in a vehicle having a large height dimension from the upper portion of the suspension tower 24 to the upper portion of the upper member 27 (side wall plate). The reinforcing member can be divided by a lower reinforcing panel 35 (reinforcing member) that supports the upper portion of the suspension tower 24. That is, the reinforcing member can be provided only at the upper and lower necessary places. For this reason, compared with the case where one big reinforcement member is used like before, the waste of a reinforcement member can be eliminated.

  Further, a plurality of rectangular tube portions extending in the vehicle front-rear direction are arranged in the vertical direction by the upper member 27 (side wall plate), the upper reinforcing panel 32 (reinforcing member), and the lower reinforcing panel 35 (reinforcing member) of the engine room ER. It is formed with. For this reason, the collision load at the time of vehicle front collision can be efficiently transmitted to the front pillar 14 (vehicle frame). Further, the front end positions of the rectangular tube portion T1 (upper tube portion) and the lower reinforcing panel 35 (lower tube portion) are aligned with the front end position of the front wheel 20t. For this reason, the collision load is applied to the upper and lower reinforcing members at the timing when the collision load is applied to the front wheel 20t at the time of the vehicle front collision.

<Example of change>
In addition, this invention is not limited to the said embodiment, The change in the range which does not deviate from the summary of this invention is possible. For example, in this embodiment, the example which forms the square cylinder part T1 which is an upper cylinder part by joining the upper reinforcement panel 32 and the upper member 27 was shown. However, a configuration in which the upper cylindrical portion is formed in a cylindrical shape by the upper reinforcing panel 32 and the cylindrical upper reinforcing panel 32 is fixed to the outside of the upper member 27 is also possible. In the present embodiment, an example is shown in which the rectangular tube portion T1 that is the upper tube portion and the lower reinforcing panel 35 that is the lower tube portion are separated in the vertical direction. However, depending on the height dimension from the ceiling portion 24t of the suspension tower 24 to the hood hinge 40, it is moved up and down in a state where it is in contact with the rectangular tube portion T1 that is the upper tube portion and the lower reinforcing panel 35 that is the lower tube portion. It is also possible to arrange them. In the present embodiment, an example in which two cylindrical portions are provided on the upper and lower sides has been shown. However, depending on the height dimension from the ceiling portion 24t of the suspension tower 24 to the hood hinge 40, the number of the cylindrical portions can be increased. .

10 .... Vehicle 14 ... Front pillar 17 ... Engine hood 20t ... Front wheel 24 ... Suspension tower 24t ... Ceiling (upper part of suspension tower)
27 ··· Upper member (side wall plate of engine room)
32... Upper reinforcement panel (reinforcement member)
T1 ... Square tube (upper tube)
35... Lower reinforcing panel (reinforcing member, lower cylinder)
40 ... Hood hinge BR ... Beltline ER ... Engine room

Claims (5)

A vehicle front structure comprising: a suspension tower provided on both left and right sides in the engine room; a sidewall plate of the engine room provided on the vehicle width direction outer side of the suspension tower; and a reinforcing member that reinforces the sidewall plate of the engine room Because
The vehicle front portion structure is provided with a plurality of the reinforcing members extending in the vehicle front-rear direction and arranged in the vertical direction. The vehicle front structure according to claim 1,
A vehicle front structure in which a plurality of cylindrical portions extending in the vehicle front-rear direction are formed by a side wall plate of the engine room and the plurality of reinforcing members. The vehicle front structure according to claim 2,
A vehicle front structure in which an upper cylinder portion is provided at a height position of a belt line. A vehicle front structure according to any one of claims 2 and 3,
A vehicle front structure in which a lower cylinder portion is provided at a height position above the suspension tower. A vehicle front structure according to any one of claims 2 to 4,
A vehicle front structure in which the front end positions of the upper cylinder portion and the lower cylinder portion are matched with the front end position of the front wheel.

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