JP5377559B2 - Vehicle front body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a front body of a vehicle which can improve the driving stability of a vehicle as well as absorb a shock by its sub frame when a frontal collision load is applied from the front of the vehicle. <P>SOLUTION: A front side frame 16 has a front-side horizontal part 22 extending nearly horizontally to the rear from the top of a vehicle, a sloping part 23 extending obliquely downward from the front side horizontal part toward the rear of the vehicle body, and a floor-side horizontal part 24 extending nearly horizontally from the sloping part 23 toward the rear, and a sub-frame-side rear fixing part 56 is provided on the rear part 17b of a sub-frame 17, which is fixed through a bracket 31 connected to the sloping part 23, creating a deformation-tolerable space S1 between itself and the sloping part 23, and the bracket 31, to which the sub-frame-side rear fixing part 56 to be connected to at least the sloping part 23 of the front side frame 16 is being attached from its bottom with collar nuts 32, is welded around the outer edge 47, and a stay 21 is set up, which has at least an upper surface 61 and a matched pair of side surfaces 62, 62, and connects the sub-frame-side rear fixing part 56 to a floor-side horizontal part 24 in a back and forth direction. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

  The present invention relates to a front body of a vehicle in which a front side frame is extended in the longitudinal direction of the vehicle body and a sub-frame is attached to the front side frame.

  The front body of the vehicle includes a front side frame that extends in the longitudinal direction of the vehicle body, a subframe that is attached to the front side frame, a rear mount that is provided at the rear end of the subframe, and a rear end of the front side frame (the floor side horizontal portion). And an L-shaped stay in a cross-sectional view connecting the rear end and the rear mount.

  According to the front vehicle body of this vehicle, when a front collision load is applied from the front of the vehicle body, the front collision load can be reliably transmitted to the rear end of the front side frame (see, for example, Patent Document 1). .

JP 2009-73243 A

Here, in the front body of the vehicle of Patent Document 1, it is provided at the rear end (floor side horizontal portion) of the front side frame, and the rear end and the rear mount are connected by a straight L-shaped stay in a sectional view. Yes.
For this reason, when a front impact load is applied from the front of the vehicle body, it is difficult to absorb the impact of the front impact load with a stay that is not easily bent. Further, the bracket that supports the rear mount of the subframe has a small joining range with the front side frame (vertical frame), and the welded portion of the front side frame is easily peeled off in the strength skid durability test.

  The strength skid durability test is a test in which the tire is fixed, a load in the front-rear direction is input to the vehicle body, and the vehicle body durability is confirmed.

  An object of the present invention is to provide a front vehicle body of a vehicle that can complement the joint strength of a joint portion of a bracket joined to the lower surface of a front side frame. It is an object of the present invention to provide a front vehicle body of a vehicle that can absorb the impact of the subframe when a front collision load acts from the front of the vehicle body and can improve the steering stability of the vehicle body.

According to a first aspect of the present invention, there is provided a front body of a vehicle including a front side frame extending in the longitudinal direction of the vehicle body and a sub-frame attached to the front side frame. A front horizontal portion extending substantially horizontally, an inclined portion extending obliquely downward from the front horizontal portion toward the rear of the vehicle body, and a floor extending substantially horizontally rearward from the inclined portion. A sub-frame rear mounting portion that is fastened via a bracket that is coupled to the inclined portion with a deformation allowable space between the inclined portion and the rear portion of the sub-frame. At least the upper surface connected in the vehicle body front-rear direction between the sub-frame rear mounting portion and the floor-side horizontal portion with a bag structure and a peripheral edge welded to the inclined portion of the front side frame Stays is provided with a pair of right side, after the sub-frame mounting portion includes an upper surface attached to the mounting surface of the bracket, and a lower surface which the front end of the stay is attached to a position beneath the upper surface, front The side frame includes a bracket and is provided with a rear mount that supports the rear mounting portion of the subframe. The upper surface of the stay is provided at the front end, penetrates the rear mounting portion of the subframe up and down, and is fastened to the rear mounting portion. A front through hole that allows a bolt to pass through, a rear through hole that is provided in the rear end portion and that is fastened to the floor side horizontal portion of the front side frame, and extends between the front end portion and the rear end portion. By forming the central portion, the stay is passed between the sub-frame rear mounting portion and the floor-side horizontal portion .

  The invention according to claim 2 is characterized in that the stay is formed in a substantially S shape in a side view.

  The invention according to claim 3 is characterized in that the stay is formed such that the width of the central portion is narrower than the width of the front end portion or the rear end portion in plan view.

  According to a fourth aspect of the present invention, the upper surface of the stay has a bead extending in the longitudinal direction of the vehicle body.

The present invention has the following effects.
According to the first aspect of the present invention, the front body of the vehicle includes a front side frame that extends in the longitudinal direction of the vehicle body, and a subframe that is attached to the front side frame.
The front side frame has a front horizontal portion extending substantially horizontally from the front end to the rear of the vehicle body, an inclined portion extending obliquely downward from the front side horizontal portion toward the rear of the vehicle body, and a rear side from the inclined portion. And a floor-side horizontal portion that extends substantially horizontally.
The rear portion of the subframe includes a subframe rear mounting portion that is fastened via a bracket that has a deformation allowable space between the inclined portion and is coupled to the inclined portion. The peripheral edge is welded to the inclined portion.
Since a stay having at least an upper surface and a pair of left and right side surfaces connected in the longitudinal direction of the vehicle body is provided between the rear mounting portion of the subframe and the floor side horizontal portion, the joint strength of the joint portion of the bracket joined to the inclined portion Can be complemented. For example, in a strength skid durability test where the tire is fixed, the load in the front-rear direction is input to the vehicle body, and the vehicle body durability is confirmed, cracks at the joint between the bracket to which the rear part of the subframe is attached and the vehicle body are suppressed. Can do.

  In the invention according to claim 2, since the stay is formed in a substantially S shape in a side view, it is possible to promote bending of the stay and to absorb the shock of the subframe when a front collision load is applied from the front of the vehicle body. it can.

  In the invention according to claim 3, since the width of the center portion is narrower than the width of the front end portion or the rear end portion in plan view, the bracket can be allowed to be elastically deformed when the vehicle body turns left and right. . That is, the subframe is easily moved with respect to the load in the left-right direction by giving the vehicle body side flexibility through a bracket that is easily deformed. As a result, the steering stability of the vehicle body can be improved. In addition, since elastic deformation can be allowed when the vehicle body turns left and right, excessive force does not act on the vehicle body, and vehicle body vibration can be reduced.

  In the invention according to claim 4, since the upper surface of the stay has a bead extending in the longitudinal direction of the vehicle body, for example, the stay is formed in a substantially S shape in a side view, or the stay has a central portion width in a plan view. Even when it is formed narrower than the width of the front end portion or the rear end portion, the stay can have a necessary and sufficient strength. This makes it possible to generate a necessary and sufficient reaction force on the stay in the strength skid durability test for confirming the durability of the vehicle body.

It is a side view which shows the front part vehicle body of the vehicle of Example 1 which concerns on this invention. FIG. 2 is a side sectional view of a front vehicle body of the vehicle shown in FIG. 1. FIG. 2 is a bottom view of a front subframe of a front vehicle body of the vehicle shown in FIG. 1. It is the perspective view seen from the bottom face of the front vehicle body of the vehicle shown in FIG. It is a bottom view of the stay of the front vehicle body of the vehicle shown in FIG. FIG. 2 is an enlarged side view of a stay of a front vehicle body of the vehicle shown in FIG. 1. FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 5. FIG. 8 is a view taken in the direction of arrow 8 in FIG. 5. FIG. 9 is a sectional view taken along line 9-9 in FIG. 5. FIG. 10 is a sectional view taken along line 10-10 in FIG. FIG. 11 is a cross-sectional view taken along line 11-11 in FIG. 5. It is action | operation explanatory drawing of the stay of the front vehicle body of the vehicle shown by FIG. FIG. 2 is a comparative study diagram of a stay of a front vehicle body of the vehicle shown in FIG. 1. It is side surface sectional drawing of the front part vehicle body of the vehicle of Example 2 which concerns on this invention. It is the perspective view seen from the bottom face of the front vehicle body of the vehicle shown in FIG.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.

As shown in FIGS. 1 to 3, the vehicle 10 includes a dashboard lower panel 15 that partitions the vehicle compartment 12 and the engine room 13 at the front portion of the vehicle body 11, and a front side frame that extends in the vehicle longitudinal direction. 16, 16, a subframe 17 attached to these front side frames 16, 16, and stays 21, 21 (one not shown) provided between the subframe 17 and the front side frames 16, 16. Prepare.
The front body of the vehicle has a structure around the front side frame 16, the sub frame 17 and the stay 21.

  The front side frame 16 includes a front side horizontal portion 22 that extends substantially horizontally from the front end to the rear of the vehicle body, an inclined portion 23 that extends obliquely downward from the front side horizontal portion 22 toward the rear of the vehicle body, And a floor-side horizontal portion (rear end or front side frame extension) 24 that extends substantially horizontally rearward from the inclined portion 23.

  A front mount portion 26 that supports the front portion 17 a of the subframe 17 and an intermediate mount portion 27 that supports the intermediate portion 17 c of the subframe 17 are formed on the front horizontal portion 22. A rear mount portion 28 that supports the rear portion 17 b of the subframe 17 is formed in the inclined portion 23.

  The rear mount portion 28 has a bracket 31 that forms a bag structure to which the subframe-side rear mounting portion 56 of the subframe 17 is attached, and a lower end 32b is welded to the back surface 31a of the bracket 31 (within the bag structure). A collar nut 32 into which a bolt 68 for attaching the sub-frame side rear mounting portion 56 is screwed, and a support fitting 33 which is welded to the bracket 31 and supports the upper end 32a of the collar nut 32.

The bracket 31 includes a horizontal mounting surface 41 that is formed substantially horizontally with respect to the inclined portion 23 of the front side frame 16, a front inclined surface 42 that extends obliquely forward from the horizontal mounting surface 41, and Left and right side surface portions that extend upward from the left and right end portions of the horizontal mounting surface 41 and the front inclined surface 42 and are welded to the side portions 23a and 23a (one not shown) of the inclined portion 23 of the front side frame 16. 43, 43 (one not shown), a front upper edge 45 extending obliquely upward from the front inclined surface 42 toward the front of the vehicle body and welded to the inclined portion 23 of the front side frame 16, and a horizontal mounting surface The rear lower edge 46 extends obliquely downward from 41 toward the rear of the vehicle body and is welded to the inclined portion 23 of the front side frame 16.
The bag structure of the bracket 31 includes a horizontal mounting surface 41, a front inclined surface 42, and left and right side surfaces 43, 43.

That is, the bracket 31 is a member to which the rear lower edge 46 of the mounting surface 41 is welded at least to the inclined portion 23 of the front side frame 16, and the peripheral edge 47 of the bracket 31 is welded to the inclined portion 23 of the front side frame 16. Is done.
The peripheral edge 47 of the bracket 31 corresponds to the end portions 43a and 43a of the left and right side surface portions 43 and 43, the front upper edge 45, and the rear lower edge 46. Reference numerals 48a to 48c denote welds.

The sub-frame 17 includes left and right vertical members 51, 51 extending in the longitudinal direction of the vehicle body, a front horizontal member 52 connecting the front ends of the vertical members 51, 51, and the rear ends of the vertical members 51, 51. The rear lateral member 53 to be connected, the front mounting portions 54 and 54 formed on the front portions 17a and 17a and supported by the front mounting portion 26 of the front side frame 16, and the intermediate portions 17c and 17c are formed on the front side frame. Intermediate mounting portions 55 and 55 supported by 16 intermediate portion mounting portions 27, and sub-frame side rear mounting portions 56 and 56 formed on rear portions 17b and 17b and supported by rear mounting portion 28 of front side frame 16. .
The subframe 17 is fastened via a bracket 31 that has a deformation allowing space S1 between the rear portion 17b of the subframe 17 and the inclined portion 23 and is coupled to the inclined portion 23.

As shown in FIGS. 4 to 11, the stay 21 is formed in a substantially S shape in a side view.
Specifically, the stay 21 includes an upper surface 61 that is substantially S-shaped and extends in the longitudinal direction of the vehicle body, left and right side surfaces (folded portions) 62 and 62 that are bent downward from the upper surface 61, and these side surfaces. The left and right flange portions 63 and 63 extend in the vehicle width direction from the front ends of the 62 and 62.

  The upper surface 61, the left and right side surfaces (bending portions) 62, 62, and the left and right flange portions 63, 63 have a width of the central portion 21c narrower than that of the front end portion 21a or the rear end portion 21b in plan view (or bottom view). The formed narrow part (constriction part) 64 is formed.

On the upper surface 61, a bead 65 extending along the longitudinal direction of the vehicle body and protruding downward of the vehicle body,
A front through hole 66 is provided in the front end portion 21 a and passes through the sub-frame side rear mounting portion 56 and passes through a bolt 68 fastened to the rear mount portion 28. A rear through hole 67 through which the bolt 69 fastened to the floor side horizontal portion 24 is passed is formed. The floor side horizontal portion 24 is welded with a nut 71 into which a bolt 69 is screwed.

  In other words, the stay 21 has at least an upper surface 61 and a pair of left and right connected between the sub-frame side rear mounting portion 56 (see FIG. 2) of the sub-frame 17 attached to the bracket 31 and the floor-side horizontal portion 24 in the longitudinal direction of the vehicle body. This is a member having side surfaces 62, 62.

  For example, when the vehicle 10 turns left and right, a tire lateral force acts on the subframe 17 (see FIG. 3). Therefore, it is preferable that the rear portion 17b of the subframe 17 is smoothly deformed. In the front body of the vehicle shown in FIGS. 1 to 11, the width of the central portion 21 c is narrower than that of the front end portion 21 a or the rear end portion 21 b in plan view (or bottom view). Since the narrow portion (constricted portion) 64 is formed, the left and right rigidity of the stay 21 can be reduced, and the deformation of the rear portion 17b of the subframe 17 can be allowed in the left and right directions, and the tire lateral force can be absorbed smoothly. Can do. As a result, the steering stability of the vehicle 10 can be improved.

FIGS. 12A to 12D show the deformation of the stay 21 when a front collision load is applied from the front of the vehicle body.
In (a), a front collision load acts as indicated by an arrow a1 from the front of the vehicle body.

  In (b), since the stay 21 is formed in a substantially S shape in a side view, the stay 21 is further strongly deformed in a substantially S shape as indicated by an arrow a2. At this time, since the stay 21 is passed between the sub-frame side rear mounting portion 56 attached to the bracket 31 and the floor side horizontal portion 24, the stay 21 can absorb the front collision load, and the inclined portion. The joint strength of the joint portion of the bracket 31 joined to the joint 23 can be supplemented.

  In (c), the stay 21 is deformed into a substantially S-shape having a stronger curve as indicated by an arrow a3 than in the state shown in (b). In this state, the deformation allowable space S1 between the rear portion 17b of the subframe 17 and the inclined portion 23 is narrower than in the state shown in FIG.

  In (d), the sub frame 17 is moved rearward of the vehicle body into the deformation allowable space S1 between the rear portion 17b of the sub frame 17 and the inclined portion 23, and the deformation allowable space S1 disappears.

  In the front body of the vehicle shown in FIGS. 1 to 11, a deformation-allowing space S1 is secured in the rear portion 17b of the subframe 17, and the front end portion 21a of the substantially S-shaped stay 21 is arranged on the subframe 17 in a side view. Since the rear end portion 21 b of the stay 21 is fastened to the bracket 31 together with the rear portion 17 b and the floor side horizontal portion 24 of the front side frame 16, when the front impact load acts on the sub frame 17 from the front of the vehicle body, It is possible to allow the frame 17 to be deformed and to absorb the impact of the front impact load.

  Furthermore, since the stay 21 is substantially S-shaped in a side view, it can be bent and deformed up and down, and the deformation of the subframe 17 in the deformation-permitting space S1 is not hindered.

  FIG. 13A shows the front vehicle body of the vehicle of the first comparative example. The front vehicle body of the vehicle of Comparative Example 1 has a structure in which the stay 21 is omitted as compared with the front vehicle body of the vehicle of Example 1 shown in FIGS. 1 to 11. A dashboard lower panel 115 for partitioning, a front side frame 116 extending in the longitudinal direction of the vehicle body, and a sub frame 117 attached to the front side frame 116 are configured.

  In the front vehicle body of the vehicle of Comparative Example 1, there is no stay between the rear portion 117b of the subframe 117 and the floor horizontal portion 114 of the front side frame 116. The front impact load acting on 117 concentrates on the bracket 111 of the front side frame 116 that supports the subframe 117. Accordingly, the bracket 111 is easily peeled off from the front side frame 116 when a front collision load is applied to the sub frame 117.

FIG. 13B shows a front vehicle body of the vehicle of Comparative Example 2. The front body of the vehicle of Comparative Example 2 has a structure using a straight-shaped stay 131 as compared with the front body of the vehicle of Example 1 shown in FIGS. A dashboard lower panel 125 that divides the room, a front side frame 126 that extends in the longitudinal direction of the vehicle body, a subframe 127 that is attached to the front side frame 126, and a space between the subframe 127 and the front side frame 126. And a straight-shaped stay 131 provided.
The straight-shaped stay 131 is not substantially S-shaped in a side view as compared with the stay 21 of the first embodiment, and does not have a narrow portion (constricted portion) 64.

  That is, since the straight-shaped stay 131 is not substantially S-shaped in a side view, the deformation of the stay 131 is not smoothly promoted and the front collision load is not sufficiently absorbed when a front collision load is applied from the front of the vehicle body. It becomes. Further, since the rear portion 127b of the sub frame 127 and the floor horizontal portion (rear end) 124 of the front side frame 126 are firmly fixed, for example, the vehicle body rigidity is improved, but the vehicle body lacks flexibility, and the vehicle body is turned left and right. For example, the steering stability of the vehicle body is impaired.

  In other words, in the stay 131 having a constant cross section (straight), the rigidity of the vehicle body is increased, so that the flexibility of the vehicle body is lacking and the tire lateral force is restrained. Therefore, the running stability of the vehicle is impaired.

  FIG. 13C shows the front vehicle body of the vehicle of the first embodiment. In the front vehicle body of the vehicle according to the first embodiment, as shown in FIG. 5, the width of the central portion 21c between the sub frame 17 and the front side frame 16 is the front end portion 21a or the rear end portion 21b in plan view. The stays 21 formed narrower than the width of are connected. As a result, it is possible to supplement the joint strength of the joint portion of the bracket 31 joined to the inclined portion 23 (see FIG. 1), and to allow elastic deformation when the vehicle body 11 turns left and right. 11 can improve the steering stability.

As shown in FIGS. 1 to 5, the front vehicle body of the vehicle includes a front side frame 16 that extends in the longitudinal direction of the vehicle body, and a subframe 17 that is attached to the front side frame 16.
The front side frame 16 has a front side horizontal portion 22 extending substantially horizontally from the front end to the rear of the vehicle body, an inclined portion 23 extending obliquely downward from the front side horizontal portion 22 toward the rear of the vehicle body, And a floor-side horizontal portion 24 extending substantially horizontally rearward from the inclined portion 23.

  The rear portion 17b of the subframe 17 includes a subframe rear mounting portion 56 that is fastened via a bracket 31 having a deformation allowable space S1 between the subframe 17 and the inclined portion 23, and the bracket 31 is The collar nut 32 for fastening the sub-frame rear mounting portion 56 to the inclined portion 23 of the front side frame 16 is fixed from below and the peripheral edge 47 is welded.

  Between the sub-frame side rear mounting portion 56 of the sub-frame 17 and the floor-side horizontal portion 24 of the front side frame 16, there is provided a stay 21 having at least an upper surface 61 and a pair of left and right side surfaces 62, 62 connected in the longitudinal direction of the vehicle body. Therefore, it is possible to supplement the joint strength of the joint portion of the bracket 31 joined to the inclined portion 23. For example, in a strength skid durability test in which a tire is fixed, a longitudinal load is input to the vehicle body, and the vehicle body durability is confirmed, a crack at a joint portion between the bracket 31 to which the rear portion 17b of the subframe 17 is attached and the vehicle body is cracked. Can be suppressed.

  As shown in FIGS. 1 and 6, in the front body of the vehicle, the stay 21 is formed in a substantially S shape in a side view, so that when the front impact load acts from the front of the vehicle body, Bending can be promoted and the shock absorption of the subframe 17 can be absorbed.

  As shown in FIGS. 1 and 5, in the front body of the vehicle, the stay 21 is formed so that the width of the central portion 21c is narrower than the width of the front end portion 21a or the rear end portion 21b in plan view. The elastic deformation of the bracket 31 can be allowed when the vehicle body 11 turns left and right. That is, the sub-frame 17 can be easily moved with respect to the load in the left-right direction by giving the vehicle body 11 side flexibility through the bracket 31 that is easily deformed. As a result, the steering stability of the vehicle body 11 can be improved. In addition, since elastic deformation can be allowed when the vehicle body 11 turns left and right, excessive force does not act on the vehicle body 11, and vehicle body vibration can also be reduced.

  As shown in FIGS. 1 and 7, the front body of the vehicle has a bead 65 extending in the longitudinal direction of the vehicle body on the upper surface 61 of the stay 21. For example, the stay 21 has a substantially S shape in a side view. Even when the stay 21 is formed or formed so that the width of the central portion 21c is narrower than the width of the front end portion 21a or the rear end portion 21b in plan view, the stay 21 can have a necessary and sufficient strength. Accordingly, a necessary and sufficient reaction force can be generated in the stay 21 in the strength skid durability test for confirming the durability of the vehicle body.

  14 and 15 show the front vehicle body of the vehicle of the second embodiment. The same parts as those used in the front vehicle body of the vehicle according to the first embodiment shown in FIGS. 1 to 11 are denoted by the same reference numerals, and detailed description thereof is omitted. The front vehicle body of the vehicle according to the second embodiment includes a dashboard lower panel 15 that partitions the vehicle compartment 12 (see FIG. 3) and the engine room 13, a front side frame 16 that extends in the longitudinal direction of the vehicle body, and the front side frame. 16 and a stay 91 provided between the sub-frame 17 and the front side frame 16.

  The stay 91 is substantially the same stay as the stay 21 of the first embodiment shown in FIG. 4, and is different from the stay 21 in the degree of bending of a substantially S-shape formed in a substantially S-shape in a side view. . Further, the stay 91 is formed close to the rear lower edge 46 of the bracket 31 that is a component of the rear mount 28, and the peripheral edge 47 of the bracket 31 is welded between the rear lower edge 46 and the upper surface 92 of the stay 91. An adhesive 93 that reinforces the portion 48c is applied. Thereby, the corrosion resistance of the welded portion 48c of the rear lower edge 46 of the bracket 31 is improved, and the vibration of the stay 91 can be reduced, which contributes to the reduction of the vehicle body vibration. FIG. 15 shows an application range T1 of the adhesive 93. The adhesive 93 is applied not only on the upper surface 92 of the stay 91 but also on the entire rear lower edge 46 in the vehicle width direction.

  In the front body of the vehicle according to the present invention, as shown in FIGS. 6 and 7, the stay 21 is formed in a substantially S shape in a side view. It may be formed in a shape.

  In the front vehicle body of the vehicle according to the present invention, as shown in FIGS. 14 and 15, an adhesive 93 that reinforces the welded portion 48 c of the bracket 31 is applied between the rear lower edge 46 and the upper surface 92 of the stay 91. However, the present invention is not limited to this, and the upper surface 92 of the stay 91 may be provided with a vibration isolating material that reduces vehicle body vibration. That is, the vibration of the vehicle body can be reduced by providing the upper surface 92 of the stay 91 with a vibration isolating material that reduces the vibration of the vehicle body.

  The front body of the vehicle according to the present invention is suitable for use in a passenger car such as a sedan or a wagon.

  DESCRIPTION OF SYMBOLS 11 ... Vehicle body, 16 ... Front side frame, 17 ... Sub frame, 17b ... Rear part of sub frame, 21 ... Stay, 21a ... Front end part of stay, 21b ... Rear end part of stay, 21c ... Center part of stay, 22 ... Front side horizontal part, 23 ... inclined part, 24 ... floor side horizontal part, 31 ... bracket, 47 ... peripheral edge, 56 ... subframe side rear mounting part, 61 ... upper surface, 64 ... narrow part, 65 ... bead, S1 ... Deformable space.

Claims (4)

In a front vehicle body of a vehicle comprising a front side frame extended in the longitudinal direction of the vehicle body and a subframe attached to the front side frame,
The front side frame includes a front side horizontal portion extending substantially horizontally from the front end to the rear of the vehicle body, an inclined portion extending obliquely downward from the front side horizontal portion toward the rear of the vehicle body, and the inclined portion. A floor side horizontal portion extending substantially horizontally rearward,
The rear portion of the sub-frame includes a sub-frame rear mounting portion that is fastened via a bracket that has a deformation-permissible space with the inclined portion and is coupled to the inclined portion.
The bracket has a bag structure and a peripheral edge is welded to the inclined portion of the front side frame,
A stay having at least an upper surface and a pair of left and right side surfaces connected in the longitudinal direction of the vehicle body is provided between the sub-frame rear mounting portion and the floor-side horizontal portion ,
The sub-frame rear attachment portion has an upper surface attached to the attachment surface of the bracket, and a lower surface located below the upper surface and attached to the front end portion of the stay,
The front side frame includes the bracket, and includes a rear mount portion that supports the rear mounting portion of the subframe,
On the upper surface of the stay,
A front through hole that is provided at the front end portion and penetrates a bolt fastened to the rear mount portion through the subframe rear mounting portion vertically;
A rear through hole that is provided at a rear end portion and penetrates a bolt fastened to the floor side horizontal portion of the front side frame;
By forming a central portion extending between the front end portion and the rear end portion,
The front body of the vehicle, wherein the stay is passed between the rear mounting portion of the subframe and the floor side horizontal portion .   The front body of the vehicle according to claim 1, wherein the stay is formed in a substantially S shape in a side view.   The front body of the vehicle according to claim 1 or 2, wherein the stay is formed such that a width of a central portion is narrower than a width of a front end portion or a rear end portion in a plan view.   The front body of a vehicle according to any one of claims 1 to 3, wherein the stay has a bead extending on the upper surface in a longitudinal direction of the vehicle body.

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