JP2020044975A - Front part vehicle body structure of vehicle - Google Patents

Abstract

To provide a front part vehicle body structure of a vehicle which can inhibit deformation of a suspension housing to maintain a damper in a proper posture.SOLUTION: A suspension housing 5 is provided with: a damper support part 84a supporting a damper 11 extending in a vehicle width direction; a suspending part 83 extending downward in a substantially vertical direction from an inner edge as seen in a vehicle width direction of the damper support part 84a and coupled to a front frame 3 at a lower end part; and an extension part 53 extending from an outer edge as seen in the vehicle width direction of the damper support part 84a to the outer side as seen in the vehicle width direction. Further, the suspending part 83 is provided with a reinforcement part 83d extending in a vertical direction. The extension part 53 is provided with an expanding part 53f expanding upward along a rotation locus of a suspension arm 12.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a front body structure of a vehicle having a suspension housing to which a component member of a suspension is attached at a front portion.

  A front part of a vehicle such as an automobile is provided with a suspension housing to which components such as a suspension damper are attached. The suspension housing is fixed to a front frame extending in the vehicle front-rear direction (for example, see Patent Document 1).

  The suspension housing is generally manufactured by a method of pressing a steel plate. On the other hand, in press molding, a method of casting a suspension housing with aluminum (aluminum die-casting) has been studied from the viewpoint that the degree of freedom in shape is relatively low and the weight of the vehicle body is further reduced.

JP 2011-005882 A

  If the posture of the damper deviates from an appropriate posture, steering stability performance, NVH (Noise, Vibration, Harshness) performance, strength durability performance, and the like are affected. Therefore, the suspension housing to which the damper is attached is required not to be easily deformed when a load is applied from the damper.

  An object of the present invention is to provide a front vehicle body structure of a vehicle that can suppress deformation of a suspension housing and maintain a damper in an appropriate posture.

  According to another aspect of the present invention, a front body structure of a vehicle includes a front frame extending in a vehicle front-rear direction, and a suspension housing connected to the front frame to which a suspension having a suspension arm and a damper is attached. A suspension housing extending in the vehicle width direction and supporting the damper; and a suspension housing extending substantially vertically downward from the vehicle width direction inner edge of the damper support portion to the front frame at a lower end portion. A hanging portion to be connected, an extending portion extending outward in the vehicle width direction from an outer edge of the damper support portion in the vehicle width direction, the hanging portion includes a reinforcing portion extending vertically, and the extending portion And a swelling portion swelling upward along a rotation trajectory of the suspension arm.

  According to this configuration, the hanging portion provided substantially vertically downward from the inner edge in the vehicle width direction of the damper supporting portion and connected to the front frame at the lower end portion is provided, and the reinforcing portion is provided at the hanging portion. Accordingly, when a load is applied to the suspension housing from the damper, the hanging portion can be suppressed from being deformed inward in the vehicle width direction. That is, deformation of the suspension housing can be suppressed. Therefore, the damper can be maintained in an appropriate posture by the hanging portion and the damper support, that is, by the suspension housing.

  Moreover, in this configuration, since the suspension housing is provided with the extending portion extending outward in the vehicle width direction from the outer edge in the vehicle width direction of the damper support portion, the vehicle body component above the front frame and outside in the vehicle width direction is provided. The extension portions can be connected, and the rigidity around the damper support portion can be increased to suppress the deformation of the suspension housing. However, when such an extension is provided, the length of the suspension housing in the vehicle width direction is increased, and the suspension arm and the suspension housing may interfere with each other when the suspension arm rotates. On the other hand, in this configuration, since the bulging portion bulging upward along the rotation trajectory of the suspension arm is provided in the bulging portion, the bulging portion around the damper supporting portion is provided by the bulging portion as described above. The interference between the suspension arm and the suspension housing can be avoided while increasing the rigidity.

  In the above configuration, the damper may be one that is supported by the damper support in a state where the damper is inclined such that the upper side is located more inward in the vehicle width direction (claim 2).

  As described above, when the damper is supported in an inclined state such that the damper is located closer to the inside in the vehicle width direction, the damper and the suspension housing are likely to fall inward in the vehicle width direction. On the other hand, in the present invention, since the inward fall can be suppressed as described above, it is effective if the present invention is applied to a damper supported in the above state.

  In the above configuration, preferably, the damper support portion is inclined so as to be located lower as it goes inward in the vehicle width direction (claim 3).

  According to this configuration, the load applied to the suspension housing from the damper that is supported in an inclined state so as to be positioned more inward in the vehicle width direction as described above is more uniformly received by the entire damper support portion. Thus, the deformation of the damper support can be suppressed.

  In the above configuration, preferably, the suspension housing includes a first fixed portion fixed to the front frame, and a second fixed portion provided behind the first fixed portion and fixed to the front frame. And wherein the first fixed portion and the second fixed portion are fixed to different portions of the front frame in the vehicle width direction, respectively (Claim 4).

  According to this configuration, the deformation of the suspension housing around the vehicle front-rear direction can be suppressed, and the deformation of the suspension housing inward in the vehicle width direction can be further suppressed.

  In the above configuration, preferably, the damper is supported by the suspension housing in an inclined position such that the damper is positioned rearward toward the upper side, and the suspension housing is disposed rearward of the first fixed portion and in the second position. A third fixed portion provided forward of the fixed portion and fixed to the front frame, wherein the second fixed portion and the third fixed portion extend in a plane extending continuously in the front-rear direction; (Claim 5).

  According to this configuration, in the second fixed portion and the third fixed portion provided behind the first fixed portion, a relatively rear portion of the suspension housing is firmly fixed to the front frame, This increases the rigidity of the relatively rear portion of the suspension housing. Therefore, a relatively large load is input backward from the damper to the suspension housing by being supported in an inclined position so as to be positioned rearward toward the upper side, while the suspension housing is deformed by this load. Can be suppressed.

  ADVANTAGE OF THE INVENTION According to this invention, the front vehicle body structure of the vehicle which can suppress deformation of a suspension housing and can maintain a damper in an appropriate attitude | position can be provided.

1 is a perspective view schematically showing a front body structure of a vehicle according to the present invention. FIG. 2 is a top view schematically showing a front body structure of the vehicle. FIG. 2 is a schematic side view of a part of the front body structure of the vehicle as viewed from the outside in the vehicle width direction. FIG. 4 is a schematic view of a cross section taken along line IV-IV of FIG. 2. It is the schematic of the VV line | wire cross section of FIG. FIG. 6 is a schematic view of a cross section taken along line VI-VI of FIG. 2. FIG. 2 is a schematic perspective view of a part of a front vehicle body structure of the vehicle as viewed from outside in a vehicle width direction. FIG. 8 is a schematic view of a cross section taken along line VIII-VIII of FIG. 3. It is the schematic side view which looked at the suspension housing from the vehicle width direction inside. It is the schematic side view which looked at the suspension housing from the vehicle width direction outer side. It is a schematic top view of a suspension housing. It is a schematic front view of a suspension housing. FIG. 10 is a schematic view of a cross section taken along line XIII-XIII of FIG. 9.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view schematically showing a structure of a front vehicle body 1 of a vehicle V according to the present invention. FIG. 2 is a top view schematically showing the structure of the front vehicle body 1 of the vehicle V. FIG. 3 is a side view schematically showing a part of the front vehicle body 1 of the vehicle V. FIG. 3 is a view of a part of the front body 1 of the vehicle V, which is on the right side when facing forward, as viewed from the outside in the vehicle width direction. Hereinafter, the front-rear direction of the vehicle is simply referred to as the front-rear direction, and the vehicle width direction is appropriately referred to as the left-right direction. In addition, the right and left when facing forward are simply referred to as right and left. In the drawings, “inside” represents the inside in the vehicle width direction, and “outside” represents the outside in the vehicle width direction.

  A dash that defines a front end portion of a vehicle compartment S in the front portion of the vehicle V and separates the engine compartment E (a portion where an unillustrated engine unit including an engine and a transmission is mounted) and the vehicle compartment S from each other. A panel 2 is provided. The dash panel 2 is a panel extending in the up-down direction and the vehicle width direction. In this embodiment, the vehicle V is a so-called FR vehicle (vehicle of a front engine / rear drive system) configured to transmit the output of an engine mounted on a front part to rear wheels, A tunnel portion 2a through which a propeller shaft is inserted is formed at the center in the vehicle width direction.

  At the front of the vehicle V, a front frame 3, an apron rain 4, and a suspension housing 5 are provided. At the front of the vehicle V, a connection panel 6 interposed between the suspension housing 5 and the dash panel 2 is provided. The front frame 3, the apron rain 4, the suspension housing 5, and the connection panel 6 are each a pair of left and right vehicle body components. A suspension 10 is provided at a front portion of the vehicle V. One suspension 10 is provided on each of the left and right sides corresponding to the pair of left and right front wheels. 1 and 2, illustration of the suspension 10 is omitted.

  The front structure of the vehicle V is symmetrical in the left-right direction, and the structure on one of the left and right sides will be described below.

<Apron rain>
The apron rain 4 is a reinforcement member extending in the front-rear direction. The apron rain 4 extends forward from a hinge pillar 7 to which a hinge of a front door of the vehicle is attached. The apron rain 4 forms a closed cross-section extending in the front-rear direction with the apron rain 4 alone at the front portion, and forms a closed cross-section extending in the front-rear direction with the suspension housing 5 as described later in the rear portion. I have.

<Front frame>
FIG. 4 is an enlarged schematic view showing a cross section taken along line IV-IV of FIG. FIG. 5 is an enlarged schematic view showing a cross section taken along line VV of FIG. 2. FIG. 6 is an enlarged schematic view showing a cross section taken along line VI-VI of FIG. 2.

  The front frame 3 is a vehicle body rigid member that forms a closed cross section C1 extending in the front-rear direction. The front frame 3 is fixed to the dash panel 2 and extends forward from the dash panel 2. The front frame 3 is arranged at a position below the apron rain 4 and inside the apron rain 4 in the vehicle width direction. For example, with respect to the apron rain 4 on the right side, the front frame 3 on the right side is disposed at an azimuth of about 45 degrees diagonally lower left. Between the apron rain 4 and the front frame 3, there is provided a space in which a wheel house WH that covers a front wheel (not shown) can be formed.

  As shown in FIG. 4, the closed cross-section C1 has a substantially rectangular shape that is long in the up-down direction, and the front frame 3 extends in the up-down direction and the front-back direction to form the outer side surface of the front frame 3 in the vehicle width direction. A first side surface portion 3a, an upper surface portion 3b extending inward in the vehicle width direction from an upper edge of the first side surface portion 3a to form an upper surface of the front frame 3, and a vehicle width direction inner side from a lower edge of the first side surface portion 3a. And extends vertically between a lower surface portion 3c constituting the lower surface of the front frame 3 and a vehicle width direction inner edge of the upper surface portion 3b and a vehicle width direction inner edge of the lower surface portion 3c. And a second side surface portion 3d constituting an inner surface in the direction. Further, the front frame 3 includes an upper flange portion 3e extending upward from the upper surface portion 3b, that is, the vicinity of an inner edge of the upper surface of the front frame 3 in the vehicle width direction, and a lower surface portion 3c, that is, a vicinity of the lower surface of the front frame 3 near the vehicle width direction inner edge. And a lower flange portion 3f extending downward. The upper flange portion 3e and the lower flange portion 3f extend in the front-rear direction over the entire length of the front frame 3.

  The front frame 3 is made of, for example, a plate-shaped steel material, and is provided on the outside in the vehicle width direction and has a substantially hat-shaped cross section that bulges outward in the vehicle width direction. The front frame inner member 3t having a substantially hat-shaped cross section slightly bulging inward in the vehicle width direction, and a plate-like flange configuration panel 3u extending therebetween extending vertically therebetween are joined therebetween. It is composed of For example, the upper flange portion 3e is formed by joining a flange portion formed on the front frame outer 3s, an upper end portion of the flange configuration panel 3u, and a flange portion formed on the front frame inner 3t. I have.

<Suspension>
In the present embodiment, a double wishbone type suspension is used as the suspension 10. The suspension 10 includes a knuckle (not shown) fixed to a tire (not shown), a lower arm (not shown) connected to the knuckle and supporting the tire via the knuckle, a lower arm and a lower arm. The upper arm 12 (so-called A-arm) connected to the knuckle and supporting the tire via the knuckle, and a damper 11. The damper 11 includes a shock absorber 11a and a coil spring 11b disposed so as to surround the outer periphery of the shock absorber 11a.

  FIG. 7 is a schematic perspective view of a part of the right side portion of the front vehicle body 1 of the vehicle V as viewed obliquely from the lower right. 7, the damper 11 is omitted from FIG.

  The upper arm 12 is provided with a knuckle fixing portion 12a to which the upper end of the knuckle is fixed. The knuckle fixing portion 12a is provided at the outermost end of the upper arm 12 in the vehicle width direction. The upper arm 12 extends from the knuckle fixing portion 12a while bending inward and forward in the vehicle width direction. And a second arm portion 14 extending from the knuckle fixing portion 12a while curving inward and rearward in the vehicle width direction.

  A first shaft-supporting portion 13a and a second shaft-supporting portion, which are supported by the suspension housing 5, respectively, are provided at the inner end of the first arm portion 13 in the vehicle width direction and at the inner end of the second arm portion 14 in the vehicle width direction. A shaft support 14a is provided. The first shaft-supported portion 13a and the second shaft-supported portion 14a are fixed to the suspension housing 5 so as to be rotatable around an axis extending in the front-rear direction. The upper arm 12 is connected to the rotation center axis of the shaft-supported portions 13a and 14a. It is supported by the suspension housing 5 so as to be rotatable around vertically.

  The damper 11 is supported by the suspension housing 5 and the lower arm in a posture extending vertically. Specifically, the lower end of the damper 11 is supported by the lower arm, and the upper end of the damper 11 is supported by the suspension housing 5. As shown in FIG. 3, the damper 11 is supported in a rearwardly inclined posture (that is, a posture in which the damper 11 is located rearward toward the upper side). Further, as shown in FIG. 8 which is a schematic cross-sectional view taken along the line VIII-VIII of FIG. 3, the damper 11 is inclined inwardly and obliquely inward (in other words, the upper side is positioned more inward in the vehicle width direction). Supported by.

<Suspension housing>
The suspension housing 5 is a member to which the components of the suspension 10 are attached. As described above, the upper end of the damper 11 and the respective supported portions 13a and 14a of the upper arm 12 are attached to the suspension housing 5.

  The suspension housing 5 has a housing shape with a lower end opening that accommodates the damper 11, and is fixed to the front frame 3 and the apron rain 4 so as to cover above the wheel house WH. As described above, the front frame 3 is disposed below the apron rain 4 and inside the apron rain 4 in the vehicle width direction. Accordingly, the suspension housing 5 has a shape that extends inward in the vehicle width direction and downward from the apron rain 4 toward the front frame 3 as a whole, and bridges these.

  As shown in FIG. 2 and the like, the rear end of the suspension housing 5 is further fixed to a connection panel 6. The connection panel 6 is a panel member, and its rear portion extends substantially horizontally, and its front portion is inclined forward and obliquely upward so as to be positioned higher toward the front. The connection panel 6 is fixed to the dash panel 2 so as to extend forward from the dash panel 2. Thereby, the suspension housing 5 is connected to the dash panel 2 via the front frame 3 and the connection panel 6. The outer edge of the connection panel 6 in the vehicle width direction is further fixed to the hinge pillar 7.

  In this embodiment, the suspension housing 5 is formed by aluminum die-casting, and the lightweight and complicated shape of the suspension housing 5 is realized. The suspension housing 5 may be formed by pressing a sheet metal member or the like.

  FIG. 9 is a schematic side view of the suspension housing 5 alone viewed from the inside in the vehicle width direction. FIG. 10 is a schematic side view of the suspension housing 5 alone viewed from the outside in the vehicle width direction. FIG. 11 is a schematic top view of the suspension housing 5 alone. FIG. 12 is a schematic front view of the suspension housing 5 alone. FIG. 13 is a schematic view of a cross section taken along line XIII-XIII in FIG. 9.

  As shown in FIG. 11, the suspension housing 5 is generally a portion excluding a rear end portion of the suspension housing 5 and an outer portion in the vehicle width direction, and a suspension fixing portion 51 to which the suspension 10 is fixed, and a suspension fixing portion. A rear connecting portion 52 that extends rearward from the portion 51 and forms a rear end portion of the suspension housing 5, and extends outward from the suspension fixing portion 51 and the rear connecting portion 52 in the vehicle width direction, and extends outside the vehicle width direction of the suspension housing 5. And an outer connecting portion 53 constituting a part. These parts 51, 52, 53 are formed integrally.

  In terms of function and structure, the suspension fixing portion 51 includes a first arm support portion 60 that forms a front end portion of the suspension fixing portion 51, a second arm support portion 70 that forms a rear end portion of the suspension fixing portion 51, A main body portion 80 that constitutes a portion between the arm support portion 60 and the second arm support portion 70;

<First arm support>
The first arm support part 60 is a part that supports the first arm part 13 of the upper arm 12.

  The first arm supporting portion 60 includes a first standing wall 61 extending in the up-down direction and the vehicle width direction, a second standing wall 62 extending rearward of the first standing wall 61 and substantially parallel to the first standing wall 61, and a first standing wall 61. A first inner wall 63 extending in the up-down direction and the front-rear direction across the inner edge in the vehicle width direction and an inner edge in the vehicle width direction of the second standing wall 62, and between an upper edge of the first standing wall 61 and an upper edge of the second standing wall 62. A first upper wall 64 extending in the vehicle width direction and in the front-rear direction. The first arm support portion 60 forms an open cross section that opens outward in the vehicle width direction by the walls 61 to 64. Note that the open cross-section in the present specification is not a cross section completely or closed by a plate material except for a small opening as in the above-described closed cross section C1, but is a flat surface. On the other hand, it is a cross section provided with an opening formed by a plurality of bent portions so as to have a swelling such as a prism or a V-shape.

  The first arm support portion 60 includes a front extension 65 extending forward from the front surface of the first standing wall 61, a front flange 66 extending downward from a front edge of the front extension 65, a front extension 65, and a first extension 65. A first fixed portion 67 extending downward from the inner wall 63;

  The first upper wall 64 forms a part of the top surface of the suspension housing 5. The first upper wall 64 extends from the upper edge of the first inner wall 63 outward in the vehicle width direction to a position outside the first upright wall 61 and the second upright wall 62 in the vehicle width direction.

  The first inner wall 63 forms a part of the inner surface of the suspension housing 5 in the vehicle width direction. As shown in FIG. 4 and the like, the upper portion of the first inner wall 63 extends substantially vertically, and the lower portion of the first inner wall 63 is inclined so as to be located outward in the vehicle width direction as going downward.

  The first standing wall 61, the front extension 65, and the front flange 66 form a part of the front end of the suspension housing 5. The front extension 65 and the first standing wall 61 are bridged by a plurality of ribs R1, and the rigidity of the first standing wall 61 is enhanced by the front extension 65 and the ribs R1. Further, as shown in FIG. 10, a plurality of ribs are also provided on the lower surface of the front extension 65, thereby also increasing the rigidity of the front extension 65 and thus the first standing wall 61.

  As shown in FIG. 13, the length of the second upright wall 62 in the vehicle width direction is set shorter than the length of the first upright wall 61 in the vehicle width direction. As shown in FIG. 4 and the like, the second standing wall 62 has a shape such that the dimension in the vehicle width direction increases toward the upper side.

  As shown in FIGS. 4, 12, and the like, a shaft hole 61 a into which a shaft member for supporting the first arm portion 13 is inserted is provided substantially in the vertical center of the first standing wall 61 and the second standing wall 62. , 62a are formed. As shown in FIG. 7 and the like, the first supported portion 13 a of the first arm portion 13 is housed between the first standing wall 61 and the second standing wall 62. Then, in this accommodated state, a shaft member extending in the front-rear direction is inserted into a hole (not shown) formed in the first shaft support portion 13a and the shaft holes 61a, 62a of the upright walls 61, 62, and this shaft member is By being fixed to the two vertical walls 62, the first arm 13 is supported by the first arm support 60 so as to be rotatable in the vertical direction.

  In the present embodiment, the fixing of the shaft member and thus the fixing of the first arm 13 are performed behind the second standing wall 62. Specifically, a fixing member for fixing the shaft member is attached to the shaft member behind the second standing wall 62, and the fixing member and the shaft member are attached to the second standing wall 62 by a tool behind the second standing wall 62. Is to be fixed.

<Second arm support>
The second arm support 70 is a portion that supports the second arm 14 of the upper arm 12.

  The second arm supporting portion 70 extends substantially parallel to the rear of the second standing wall 62 (that is, extends in the vertical direction and the vehicle width direction), and the third standing wall behind the third standing wall 71. A fourth vertical wall 72 extending substantially in parallel with the first vertical wall 71 (that is, extending in the vertical direction and the vehicle width direction), and a vertical wall extending between the inner edge of the third vertical wall 71 and the inner edge of the fourth vertical wall 72 in the vehicle width direction. A second inner wall 73 extending in the direction and the front-rear direction, and a second upper wall 74 extending in the vehicle width direction and the front-rear direction across the upper edge of the third standing wall 71 and the upper edge of the fourth standing wall 72 are provided. The second arm support portion 70 forms an open cross section that opens outward in the vehicle width direction by the walls 71 to 74.

  In addition, the second arm support 70 includes a second fixed portion 77 extending downward from the second inner wall 73.

  The second upper wall 74 forms a part of the top surface of the suspension housing 5. The second upper wall 74 extends slightly inclining from the upper edge of the second inner wall 73 outward in the vehicle width direction such that the outer side in the vehicle width direction is located upward.

  The second inner wall 73 constitutes a part of the inner surface of the suspension housing 5 in the vehicle width direction. Similarly to the first inner wall 63, the second inner wall 73 has an upper portion extending substantially vertically, and a lower portion thereof is inclined so as to be located outward in the vehicle width direction as it goes downward.

  As shown in FIG. 5 and the like, similarly to the second standing wall 62, the third standing wall 71 has a shape such that the dimension in the vehicle width direction increases toward the upper side. However, as shown in FIG. 13, the third standing wall 71 extends to the outside in the vehicle width direction than the second standing wall 62. In addition, the fourth standing wall 72 extends outside the first, second, and third standing walls 61, 62, and 71 in the vehicle width direction, and has a longer dimension in the vehicle width direction than the other standing walls. Further, the fourth standing wall 72 is connected to the rear connecting portion 52 having a plurality of ribs R2 formed on the lower surface. With such a configuration, in the present embodiment, the second arm support 70 has higher rigidity than the first arm support 60.

  A shaft hole into which a shaft member for supporting the second arm unit 14 is inserted is provided at substantially the vertical center of the third standing wall 71 and the vertical center of the inner portion of the fourth standing wall 72 in the vehicle width direction. 71a and 72a are formed. The second pivoted support part 14 a of the second arm part 14 is accommodated between the third standing wall 71 and the fourth standing wall 72. Then, in this accommodated state, a shaft member extending in the front-rear direction is inserted into a hole (not shown) formed in the second supported shaft portion 14a and the shaft holes 71a, 72a of each of the upright walls 71, 72. By being fixed to the third standing wall 72, the second arm unit 14 is supported by the second arm support unit 70 so as to be rotatable in the vertical direction.

  In the present embodiment, the fixing of the shaft member and, consequently, the fixing of the second arm portion 14 are performed in front of the third standing wall 71. Specifically, a fixing member for fixing the shaft member is attached to the shaft member in front of the third standing wall 71, and the fixing member and the shaft member are fixed to the third standing wall 71 by a tool in front of the third standing wall 71. Is to be fixed.

  The height positions of the shaft holes 71a, 72a formed in the third standing wall 71 and the fourth standing wall 72 are lower than the height positions of the shaft holes 61a, 62a formed in the first standing wall 61 and the second standing wall 62. Accordingly, in the upper arm 12, the height position of the second shaft support portion 14a of the second arm portion 14 is lower than the height position of the first shaft support portion 13a of the first arm portion 13, and the upper arm 12 is viewed from the side. And is supported by the suspension housing 5 in a posture inclined obliquely rearward and downward.

<Main unit>
The main body portion 80 extends between the first upper wall 64 and the second upper wall 74 in the vehicle width direction and the front-rear direction, and extends downward from the inner edge of the third upper wall 84 in the vehicle width direction. And a third inner wall 83 extending substantially vertically.

  As shown in FIG. 5 and the like, the third upper wall 84 is inclined so as to be located lower inward in the vehicle width direction. The third upper wall 84 is provided with a damper fixing portion 84a to which the upper end of the damper 11 is fixed. The damper fixing portion 84a bulges upward substantially at the center of the third upper wall 84, and has a substantially disk shape with a through hole 84b formed at the center when viewed from above. As shown in FIG. 13, the damper 11 is housed between the second upright wall 62 and the third upright wall 71 in a side view, and the damper 11 is fixed with the upper end thereof inserted through the through hole 84 b of the damper fixing portion 84 a. It is configured to be fixed to the portion 84a. A plurality of ribs R3 extending in the vertical direction are formed around the damper fixing portion 84a, and the rigidity of the damper fixing portion 84a is enhanced by these ribs R3.

  As described above, in the present embodiment, the damper 11 is fixed to the damper fixing portion 84a, and the damper 11 is supported by the third upper wall 84. The third upper wall 84 is defined in claims. It functions as a "damper support".

  Further, the main body 80 includes a third fixed portion 87 extending downward from the third inner wall 83. The third fixed portion 87 and the second fixed portion 77 are continuous in the front-rear direction, and the fixed portions 77 and 87 are formed in a planar shape extending in the front-rear direction. In other words, the fixed portions 77 and 87 are formed such that the inner side surface and the outer side surface in the vehicle width direction are continuous and extend in the front-rear direction. The height position of the lower edge of the third fixed portion 87 and the lower edge of the second fixed portion 77 is higher than the height position of the lower edge of the first fixed portion 67. That is, the first fixed portion 67 extends below the third fixed portion 87 and the second fixed portion 77.

  As described above, the third inner wall 83 basically extends in the vertical direction. However, the third inner wall 83 has a part of a part connected to the second standing wall 62 and a part of a part connected to the third standing wall 71. The portion protrudes inward in the vehicle width direction. In detail, as shown in FIGS. 10, 13, and the like, of the front portion of the third inner wall 83, the portion surrounding the shaft hole 62 a of the second standing wall 62 in side view is located at the center of the third inner wall 83 in the front-rear direction. It is curved so as to bulge inward in the vehicle width direction from the vertically extending portion 83c forward, and a front bulging portion 83a bulging inward in the vehicle width direction is formed in this portion. In addition, a portion of the rear portion of the third inner wall 83 that surrounds the shaft hole 71a of the third standing wall 71 in a side view is expanded inward in the vehicle width direction from the center portion 83c of the third inner wall 83 in the front-rear direction. A rear bulging portion 84b bulging inward in the vehicle width direction is formed in this portion.

  A reinforcing portion 83d projecting inward in the vehicle width direction is formed in a portion 83c of the third inner wall 83 between the front bulging portion 83a and the rear bulging portion 84b. The reinforcing portion 83d is bent so as to protrude inward in the vehicle width direction. In the present embodiment, the reinforcing portion 83d is formed by extruding a part of the third inner wall 83 so as to protrude inward in the vehicle width direction with a constant thickness. The reinforcing portion 83d is formed at a substantially central portion in the front-rear direction of the third inner wall 83, and extends vertically in this portion. The rigidity of the third inner wall 83 and, consequently, the main body 80 is increased by the reinforcing portion 83d.

<Rear connection part>
The rear connecting portion 52 extends rearward from the rear surface of the fourth standing wall 72. The rear connecting portion 52 has a shape that curves inward and downward in the vehicle width direction. In the present embodiment, a plurality of ribs R4 extending so as to connect the rear surface of the fourth standing wall 72 and the upper surface of the rear connecting portion 52 are provided, and the ribs R4 provide the fourth standing wall 72 and the rear connecting portion 52. The rigidity has been increased. Further, on the lower surface of the rear connecting portion 52, a plurality of ribs R2 are provided in a lattice shape as described above. Rigidity is increased.

  The lower end of the rear connecting portion 52 extends vertically and functions as a fourth fixed portion 52a. The fourth fixed portion 52a is also an inner end of the rear connecting portion 52 in the vehicle width direction. The fourth fixed portion 52a extends to the same height position as the first fixed portion 67, and extends below the third fixed portion 87 and the second fixed portion 77.

<Outer connecting part>
The outer connecting portion 53 extends from the inner edge of each of the first upper wall 64, the second upper wall 74, the third upper wall 84, and the rear connecting portion 52 in the vehicle width direction to the outside in the vehicle width direction. The outer connecting portion 53 is formed with a stepped portion so that the outer portion in the vehicle width direction is positioned lower than the inner portion in the vehicle width direction. A first horizontal wall 53b configured and extending in the vehicle width direction and the front-rear direction, a rising wall 53c extending upward from an inner edge of the first horizontal wall 53b in the vehicle width direction, and a first wall extending inward in the vehicle width direction from an upper edge of the rising wall 53c. And two lateral walls 53d. As shown in FIG. 4 and the like, the first horizontal wall 53b extends substantially horizontally, and the second horizontal wall 53d is slightly inclined inward and downward so that the inner side in the vehicle width direction is located on the lower side. ing.

  As shown in FIG. 4 and the like, the suspension housing 5 is arranged such that the outer connecting portion 53 is in contact with the apron rain 4 from below. In the outer connecting portion 53, the suspension housing 5 is fixed to the apron rain 4. I have. Thus, as described above, the closed cross-section C2 extending in the front-rear direction is formed between the apron rain 4 and the upper surface of the outer connecting portion 53, as described above.

  At a substantially central portion in the front-rear direction of the first horizontal wall 53b, there is provided an avoiding portion 53f which bulges upward. The avoiding portion 53f bulges outward from the rising wall 53c in the vehicle width direction. In the present embodiment, the avoiding portion 53f has a semicircular shape bulging outward from the rising wall 53c in the vehicle width direction. The shape of the avoiding portion 53f corresponds to the shape of the outer portion in the vehicle width direction of the knuckle fixing portion 12a. More specifically, the knuckle fixing portion 12a has a substantially circular shape in plan view, and the avoiding portion 53f corresponds to the fact that the outer portion in the vehicle width direction of the knuckle fixing portion 12a is semicircular in plan view. And has a semicircular shape. The avoiding portion 53f configured as described above corresponds to a “bulging portion” in the claims. Further, a portion of the outer extending portion 53 in which the avoiding portion 53f is formed and extending outward from the third upper wall 84 in the vehicle width direction corresponds to an “extending portion” in the claims.

  As shown in FIG. 12, the avoiding portion 53f is formed on the turning locus of the knuckle fixing portion 12a so as to extend vertically along the turning locus. Thereby, when the upper arm 12 rotates upward from the state shown by the dashed line in FIG. 13 to the state shown by the chain line, the knuckle fixing portion 12a enters the avoiding portion 53f, and the knuckle fixing portion 12a and the suspension housing 5 Does not interfere. More specifically, the avoiding portion 53f is formed such that the outer portion in the vehicle width direction of the knuckle fixing portion 12a enters the avoiding portion 53f when the upper arm 12 is rotated to the uppermost position. In the present embodiment, the avoidance portion 53f is provided outside the damper fixing portion 84a in the vehicle width direction and at a position where the position in the front-rear direction is substantially the same as the position of the damper fixing portion 84a.

<Mounting structure of suspension housing and front frame>
The suspension housing 5 configured as described above is fixed to the front frame 3 by joining the fixed portions 67, 77, 87, and 52a to the front frame 3.

  As shown in FIGS. 4 and 9, the first fixed portion 67 is joined to the first side surface portion 3 a constituting the outer surface of the front frame 3 in the vehicle width direction. That is, the first side surface 3a of the front frame 3 is provided with the first fixing portion 167 to which the first fixed portion 67 is fixed, and the first fixing portion 167 and the first fixed portion 67 are joined. Have been.

  As shown in FIGS. 5 and 9, the second fixed portion 77 and the third fixed portion 87 are joined to the upper flange portion 3 e of the front frame 3. That is, the upper flange 3e of the front frame 3 is provided with the second fixing portion 168 to which the second fixed portion 77 and the third fixed portion 87 are fixed together. The second fixed portion 77 and the third fixed portion 87 are joined together. As described above, the second fixed portion 77 and the third fixed portion 87 are continuous in the front-rear direction, and the second fixing portion 168 extends over a wide range in the front-rear direction. Specifically, the length in the front-rear direction of the fixed portion including the second fixed portion 77 and the third fixed portion 87 is longer than the length of the first fixed portion 67 and the fourth fixed portion. The length of the second fixing portion 168 is longer than the length of the fixing portion 52a, and the length of the second fixing portion 168 in the front-rear direction is longer than that of a third fixing portion 169 to be described later to which the first fixing portion 167 and the third fixed portion 187 are fixed. I have.

  As shown in FIGS. 6 and 9, the fourth fixed portion 52a is joined to the first side surface portion 3a constituting the outer surface in the vehicle width direction of the front frame 3, similarly to the first fixed portion 67. . That is, the third fixing portion 169 to which the fourth fixed portion 52a is fixed is provided on the first side surface portion 3a of the front frame 3, and the third fixing portion 169 and the fourth fixed portion 52a are joined. Have been.

  In the front-back direction, the first fixing portion 167, the second fixing portion 168, and the third fixing portion 169 are arranged in this order from the front. The fixed portions 67, 77, 87, 52a and the fixing portions 167 to 169 of the front frame 3 are joined by welding, bonding with an adhesive, or the like.

  As shown in FIG. 4, as described above, the upper flange portion 3 e of the front frame 3 is located inside the first side surface portion 3 a in the vehicle width direction, and the second fixing portion 168 is The second fixed portion 77 and the third fixed portion 87 are offset more inward in the vehicle width direction than the fixed portion 167 and the third fixed portion 169, and the second fixed portion 77 and the third fixed portion 87 are smaller than the first fixed portion 67 and the fourth fixed portion 52a. It is joined to the front frame 3 at a position offset inward in the vehicle width direction.

  The fixed portions 67, 77, 87, and 52a are provided on the vehicle width direction outer surfaces of the fixing portions 167 to 169 (the vehicle width direction outer surface of the first side surface portion 3a and the vehicle width direction outer surface of the upper flange portion 3e). It is joined to this in contact. For example, the fixed portions 67, 77, 87, and 52a are pressed against the vehicle width direction outer surfaces of the fixing portions 167 to 169 from the outside in the vehicle width direction and are welded in that state, or The fixed housings 67, 77, 87, and 52a are pressed from outside in the width direction onto the outer surfaces in the vehicle width direction of the fixed portions 167 to 169 via an adhesive, so that the suspension housing 5 is joined to the front frame 3. You.

<Action, etc.>
As described above, in the present embodiment, the third inner wall 83 extends substantially vertically downward from the inner edge in the vehicle width direction of the third upper wall 84 that supports the damper 11 via the damper fixing portion 84a. . A third fixed portion 87 is provided at the lower end of the third inner wall 83, and the third fixed portion 87 is fixed to the front frame 3. Further, a reinforcing portion 83d extending vertically is provided on the third inner wall 83. Therefore, when a load is applied to the third upper wall 84 from the damper 11, the deformation of the third inner wall 83 and the fourth upper wall 84 is suppressed, and the third inner wall 83 and the third upper wall 84 That is, the damper 11 can be maintained in an appropriate posture by the suspension housing 5.

  In particular, in the present embodiment, the damper 11 is supported in a posture (inwardly inclined posture) such that the upper side is located more inward in the vehicle width direction. Although a load is easily applied, the deformation of the third inner wall 83 and the fourth upper wall 84 due to the load is effectively suppressed.

  Further, an outer connecting portion 53 extends outward from the outer edge of the third upper wall 84 in the vehicle width direction, and the outer connecting portion 53 is connected to the apron rain 4. Therefore, the rigidity of the third upper wall 84 and thus the suspension housing 5 can be increased, and the damper 11 can be more stably supported by these. Here, when the outer connecting portion 53 is provided in this manner, the length of the suspension housing 5 in the vehicle width direction is increased, and there is a possibility that the upper arm 12 and the suspension housing 5 may interfere with each other. On the other hand, in the present embodiment, since the outer connecting portion 53 is provided with the avoiding portion 53f, as described above, the interference between the upper arm 12 (knuckle fixing portion 12a) and the suspension housing 5 can be avoided. .

  In the present embodiment, the third upper wall 84 is inclined such that the third upper wall 84 is located on the lower side toward the inside in the vehicle width direction. That is, the damper 11 (the center axis of the damper 11) is fixed to the third upper wall 84 at a right angle or an angle closer to a right angle. Therefore, the load applied from the damper 11 can be more uniformly received by the entire third upper wall 84, and the deformation of the third upper wall 84 can be suppressed.

  In the present embodiment, the first fixed portion 67 and the fourth fixed portion 52a of the suspension housing 5 are fixed to the first side surface portion 3a of the front frame 3, while the second fixed portion 87 and the third fixed portion The fixed portion 77 is an upper flange portion 3e of the front frame 3 and is fixed to a portion located inside the first side surface portion 3a in the vehicle width direction. That is, in the present embodiment, the suspension housing 5 is fixed to a plurality of portions of the front frame 3 at different positions in the vehicle width direction. Therefore, deformation of the suspension housing 5 around the vehicle front-rear direction can be further suppressed.

  Further, in the present embodiment, the damper 11 is supported in a posture in which the upper side thereof is positioned rearward (rearward posture), and a rearward load is easily applied to the suspension housing 5 from the damper 11. On the other hand, the second fixed portion 77 and the third fixed portion 87 provided behind the first fixed portion 67 are formed in a continuous extending flat shape and fixed to the front frame 3. . That is, the relatively rear portion of the suspension housing 5 is fixed to the front frame 3 continuously over a wide range. Therefore, the rigidity of the rear portion of the suspension housing 5 can be increased, and the rearward deformation of the suspension housing 5 can be suppressed, so that the damper 11 can be effectively prevented from falling backward.

<Modification>
In the above-described embodiment, the case where a double wishbone suspension is used has been described. However, the suspension is not limited to this, and any suspension having a damper supported by the suspension housing 5 may be used. For example, a multi-link type suspension may be used. Specifically, a plurality of link members for individually connecting the tire and the suspension housing may be provided instead of each arm.

  The detailed structure of the suspension housing 5 is not limited to the above. For example, the rear connecting portion 52 and the ribs R1 to R4 may be omitted.

DESCRIPTION OF SYMBOLS 1 Front body 2 Dash panel 3 Front frame 4 Apron rain 5 Suspension housing 11 Damper 12 Upper arm 52a 4th fixed part 53 Outside connection part (extension part)
53f Avoidance part (bulging part)
60 first arm support part 67 first fixed part 70 second arm support part 77 second fixed part 80 main body part 83 third inner wall (hanging part)
83d Reinforcing part 84 Third upper wall (damper supporting part)
87 Third fixed part

Claims (5)

A front frame extending in the vehicle longitudinal direction,
A suspension housing connected to the front frame, to which a suspension having a suspension arm and a damper is attached;
A suspension housing extends in the vehicle width direction to support the damper, and a hanging portion extending substantially vertically downward from a vehicle width direction inner edge of the damper support portion and connected to the front frame at a lower end portion. And an extending portion extending outward in the vehicle width direction from a vehicle width direction outer edge of the damper support portion,
The hanging portion includes a reinforcing portion extending in a vertical direction,
The front body structure of a vehicle, wherein the extension portion includes a swelling portion swelling upward along a rotation locus of the suspension arm. The front body structure of a vehicle according to claim 1,
The front vehicle body structure of a vehicle, wherein the damper is supported by the damper support portion in a state where the damper is inclined such that the damper is positioned closer to the inside in the vehicle width direction. The front body structure of a vehicle according to claim 2,
The front body structure of a vehicle, wherein the damper support portion is inclined so as to be located lower as it goes inward in the vehicle width direction. The vehicle front body structure according to any one of claims 1 to 3,
The suspension housing includes a first fixed portion fixed to the front frame, and a second fixed portion provided behind the first fixed portion and fixed to the front frame,
The front body structure of a vehicle, wherein the first fixed portion and the second fixed portion are fixed to different portions of the front frame in a vehicle width direction, respectively. The front body structure of a vehicle according to claim 4,
The damper is supported by the suspension housing in an inclined position so as to be located rearward toward the upper side,
The suspension housing includes a third fixed portion provided behind the first fixed portion and forward of the second fixed portion and fixed to the front frame,
The front body structure of a vehicle, wherein the second fixed portion and the third fixed portion are formed in a flat shape extending continuously in the front-rear direction.

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