JP2019177828A - Front vehicle body structure for vehicle - Google Patents

Abstract

To efficiently enhance the support rigidity of a suspension in a structure having a pair of right and left skeleton members for supporting the suspension.SOLUTION: A front vehicle body structure comprises: a pair of right and left skeleton members 41 each of which has an upper arm support part 82 and a dumper support part 83; a cross-member 44 stretched between the upper arm support parts 82; and a suspension cross 42 stretched between the right and left skeleton members 41 below the cross member 44. A pair of brace members 46 is stretched between the dumper support part 83 and the middle, in a vehicle width direction, of the suspension cross 42 so as to cross the cross member 44.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a front body structure of a vehicle including a pair of left and right skeleton members in which a plurality of skeleton parts that support upper and lower arms of a suspension and a damper are integrally formed.

  As a conventional front body structure of a vehicle, as exemplified in Patent Document 1, a front side frame (21) that supports an upper arm (71) of a suspension via front and rear brackets (61, 62), and a suspension A subframe (64) that supports the lower arm (72) via the side brackets (65, 65) and a suspension tower that extends upward from the front side frame (21) and supports the upper end of the damper (73). A front damper housing (63), and a cross member (42) between the left and right front brackets (62, 62) for attaching the front upper arm (71) to the front side frame (21). Are known.

  In this way, a plurality of skeleton parts that support each component of the suspension are supported by a configuration in which the components of the suspension are supported by the front side frame (21) via the plurality of members (61, 62, 63, 65). It is conceivable to have a pair of left and right skeletal members whose rigidity has been increased by integrally configuring the upper and lower arms and to support the upper and lower arms of the suspension and the damper top independently (collectively).

  However, by adopting a structure including a pair of left and right skeletal members that support the suspension in this way, it can be expected that the suspension support rigidity will be improved. However, there is room for further study in order to increase the suspension support rigidity more efficiently.

JP 2000-238658 A

  The present invention has been made in view of such a problem, and provides a front body structure of a vehicle that can efficiently increase the support rigidity of the suspension in a configuration including a pair of left and right skeleton members that support the suspension. With the goal.

  The present invention includes a pair of left and right skeleton members that are provided with an upper arm support portion for supporting an upper arm of a suspension and a damper support portion for supporting a damper on the outer side in the vehicle width direction and arranged at a predetermined interval in the vehicle width direction of the vehicle. A vehicle front body structure comprising: a cross member bridged between the left and right upper arm support parts; and a suspension cross bridged between the left and right frame members below the cross member, wherein the damper support The portion is provided at an adjacent position that is offset upward and forward and backward with respect to the upper arm support portion, and is bridged across the cross member between the damper support portion and the center of the suspension cross in the vehicle width direction. A pair of brace members.

  According to the said structure, the support rigidity of an upper arm and a damper can be improved efficiently by providing a cross member and a brace member adjacent.

  As an aspect of the present invention, the brace member is connected to the cross member at a position where it wraps in a front view.

  According to the said structure, rigidity can be mutually improved by connecting a brace member and a cross member.

As an aspect of the present invention, the damper support portion is formed adjacent to the rear of the upper arm front support portion of the upper arm support portions provided on the front and rear sides, and the cross member is adjacent to the rear of the upper support portion. It is connected by fastening at the position where it wraps in front view against the brace member,
A fastening opening that opens in the front-rear direction is formed at a front portion of the cross member that is fastened to the brace member.

  According to the said structure, a brace member and a cross member can be easily connected via the opening part for fastening from the front side of a cross member.

As an aspect of the present invention, a lower arm support portion that supports the lower arm of the suspension is formed on the skeleton member, and includes a lower cross member that is bridged between the lower arm support portions,
The lower cross member is connected at the center of the suspension cross in the vehicle width direction.

  According to the said structure, the rigidity of the vehicle width direction center of the said suspension cross to which a brace member is connected can be improved.

As an aspect of the present invention, the connection portion of the brace member to the skeleton member is provided on the inner side in the vehicle width direction of the damper support portion in the skeleton member,
A frame member that connects the upper surface portion of the skeleton member and the hinge pillar is provided, and a lower portion of the frame member is connected to a front extending member that extends forward from the hinge pillar to reinforce the frame member from below. A reinforcing member is provided.

  According to the above configuration, in addition to increasing the damper support rigidity from the inner side of the damper support portion by the brace member, the frame member and the reinforcing member are used from the upper side of the damper support portion using the upper surface portion of the skeleton member. Can also be increased.

  According to the present invention, in a configuration including a pair of left and right skeleton members that support the suspension, the suspension rigidity of the suspension can be efficiently increased.

FIG. 2 is an external perspective view showing the main part of the suspension support structure when viewed from the front front of the vehicle. The left view which shows the principal part of the front part of the vehicle of this embodiment. The front view which shows the principal part of the suspension support structure of this embodiment. The center longitudinal cross-sectional view of the vehicle width direction which shows the principal part of the front part of the vehicle of this embodiment. FIG. 5 is a back half cross-sectional view showing the main part of the right half of the suspension support structure as viewed in the direction of arrows AA in FIG. The top view which shows the principal part of the front part of the vehicle of this embodiment. The bottom view which shows the principal part of the front part of the vehicle of this embodiment. The BB line expanded sectional view in FIG.

An embodiment of the present invention will be described below with reference to the drawings.
The vehicle body structure of the vehicle 1 of this embodiment is a so-called space frame structure in which a plurality of extruded aluminum alloy frames are connected to form a vehicle body skeleton. Such a vehicle body structure of the vehicle 1 will be described with reference to FIGS.

  For the sake of clarity, the illustration of the front suspension 3 on the right side of the vehicle in FIG. 1, the left and right sides of the vehicle in FIGS. 2 to 4, 6 and 7, and the left side of the vehicle in FIG. Furthermore, illustration of the frame member 5 is omitted in FIG.

  In the figure, arrow F indicates the front of the vehicle, arrow Rt indicates the right side of the vehicle, arrow Lt indicates the left side of the vehicle, arrow OUT indicates the outer side in the vehicle width direction, and arrow IN indicates the inner side in the vehicle width direction. To do.

  As shown in FIG. 3, the vehicle body structure of the vehicle 1 in the present embodiment includes a vehicle compartment portion 2 in which an occupant gets in, and a front suspension 3 that is disposed at a position substantially corresponding to the engine compartment in front of the vehicle compartment 2. (Hereinafter abbreviated as “suspension 3”), a plurality of frame members 5 that connect the vehicle compartment 2 and the suspension support structure 4, and a front end of the suspension support structure 4. An impact absorbing structure 6 that is coupled and absorbs an impact load from the front of the vehicle is provided.

  As shown in FIG. 6, the vehicle compartment portion 2 includes a pair of left and right side sills 21 extending in the vehicle front-rear direction and a pair of left and right side sills 21 disposed above the side sill 21 at positions spaced apart in the vehicle width direction. A front pillar 22, a front end of the side sill 21, a pair of left and right hinge pillars 23 connecting the front end of the front pillar 22 in the vehicle vertical direction, a center tunnel frame 26 and a tunnel extending in the vehicle front-rear direction at a position approximately in the center in the vehicle width direction. A dash panel 251 and a cowl panel 252 as a partition wall portion 25 that forms a partition wall that separates the outside of the vehicle interior by connecting a side frame 27 (see FIG. 7), a shock absorbing member 28, and left and right hinge pillars 23 in the vehicle width direction. It has.

  As shown in FIG. 2, the impact absorbing member 28 is a member that receives a front wheel (not shown) that retreats at the time of an offset collision and absorbs the impact energy, and the rear wall (not shown) of the arch-shaped front wheel house. And the hinge pillar 23 are disposed in the vehicle front-rear direction adjacent to the front portion of the side sill 21 in the upper direction.

  4 and 6, the center tunnel frame 26 protrudes inward from the vehicle width direction center portion of the floor panel 201 (see FIG. 7) into the vehicle compartment portion 2 and extends in the vehicle front-rear direction. A pair of right and left is arranged in parallel at the top of the floor tunnel (see the same figure), and a closed cross section extending in the vehicle front-rear direction is formed between each.

  As shown in FIG. 7, the tunnel side frame 27 is provided with a pair of left and right so as to straddle between the floor panel 201 and the tunnel part 200 on the left and right sides, and between the floor panel 201 and the tunnel part 200 A closed cross section extending in the direction is formed.

  As shown in FIG. 1, the suspension 3 has a double wishbone suspension structure, and a knuckle 31 that rotatably supports a front wheel of the vehicle 1 is connected to a lower portion of the knuckle 31 on the outer side in the vehicle width direction. The lower arm 32 connected to the vehicle body in the vehicle width direction, the upper arm 33 connected to the vehicle body in the vehicle width direction, the upper arm connected to the vehicle body in the vehicle width direction, the upper end connected to the vehicle body, and the lower end The front suspension damper 34 is connected to the lower arm 32 and is extendable and retractable (hereinafter referred to as “damper 34”).

  As shown in FIG. 1, the suspension support structure 4 includes a pair of left and right skeleton members 41 arranged at predetermined intervals in the vehicle width direction, and a suspension cross 42 that connects the vicinity of the lower ends of the left and right skeleton members 41. The lower cross member 43 that connects the lower portions of the left and right skeleton members 41, the upper cross member 44 that connects the upper portions of the left and right skeleton members 41, and the upper cross member 44 at a position slightly above the vehicle. A pair of left and right box members 45 joined to each other, and a pair of left and right inclined frames 46 connecting the skeleton member 41 and the suspension cross 42.

  2 and 4, the shock absorbing structure 6 includes a pair of left and right shock absorbing members 61 connected to the front ends of the left and right skeleton members 41, and the front ends of the shock absorbing members 61 in the vehicle width direction. And a front bumper beam (not shown) to be connected.

  Further, the shock absorbing structure 6 includes a sub shock absorbing member 65 (see FIG. 2) that extends forward from the front surface of a lower skeleton part 412 (described later) of the left and right skeleton members 41 below the pair of left and right shock absorbing members 61. And a sub front bumper beam (not shown) extending in the vehicle width direction so as to connect the front end portions of the sub impact absorbing members 65 on the left and right sides.

  The shock absorbing member 61 is extended in the vehicle front-rear direction, and has an open cross-sectional space having a substantially M-shaped cross-section with an opening on the outer side in the width direction over the entire length excluding the rear end of the vehicle front-rear direction. It is made of a reinforced resin (in this example, a carbon fiber reinforced plastic).

  As shown in FIG. 2, a rear end connecting portion 613 that connects to the front surface of the skeleton member 41 is formed in a substantially flat plate shape at the rear end of the shock absorbing member 61. The rear end connecting portion 613 extends outward in the vehicle width direction at the rear end of the shock absorbing member 61 so as to close the open cross-sectional space that opens to the rear of the shock absorbing member 61 from the rear end side.

  As shown in FIGS. 1, 2, 4, 6, and 7, the frame member 5 includes a side-side upper frame 51, a center-side frame 52, a side-side frame 53, and a side-side lower frame 54. The center side lower frame 55 and the reinforcing frame 56 are provided in a pair on the left and right sides.

  These frame members 5 (51 to 56) are all formed in an extruded hollow shape, and the reinforcing frame 56 extends upward in the forward direction, while the frame members 5 (other than the reinforcing frame 56) ( 51 to 55) extend in a straight line, and connect the compartment portion 2 and the skeleton member 41 on the left and right sides.

Subsequently, each component of the above-described suspension 3, suspension support structure 4, and frame member 5 will be described in more detail.
First, the suspension 3 includes the knuckle 31, the lower arm 32, the upper arm 33, and the damper 34 as described above.

The knuckle 31 is made of aluminum die cast, and rotatably supports the front wheels of the vehicle 1 via a front hub.
The lower arm 32 is an aluminum die-cast arm member, and is formed in a substantially A shape in plan view with a portion connected to the lower portion of the knuckle 31 as a top. The lower arm 32 is connected to the skeleton member 41 in a state where the lower arm 32 can swing around the vehicle front-rear direction.

  Specifically, as shown in FIG. 1, the lower arm 32 has a front linking part 32 a connected to the skeleton member 41 at a position in front of the vehicle with respect to the damper 34 and a skeleton at a position in the rear of the vehicle with respect to the damper 34. A rear connecting portion 32b connected to the member 41 is provided at the inner end in the vehicle width direction.

  The upper arm 33 is an aluminum die cast arm member, and is formed in a substantially A shape in plan view with a portion connected to the upper portion of the knuckle 31 as a top. The upper arm 33 is connected to the skeleton member 41 so as to be swingable about the vehicle longitudinal direction as a rotation center.

  Specifically, as shown in FIG. 1, the upper arm 33 is positioned at the front of the vehicle relative to the damper 34, the front connecting portion 33 a connected to the frame member 41, and the position at the rear of the vehicle relative to the damper 34. A rear connecting portion 33b connected to the member 41 is provided at the inner end in the vehicle width direction.

  As shown in FIG. 1, the damper 34 is integrally composed of a damper main body part that can extend and contract substantially in the vehicle vertical direction and a spring part that expands and contracts according to the expansion and contraction of the damper main body part. As shown in the figure, the damper 34 has an upper connecting portion 34 a positioned at the upper end thereof connected to the skeleton member 41, and a lower connecting portion (not shown) as the lower end connected to the lower arm 32.

  Further, as described above, the suspension support structure 4 includes the pair of left and right skeleton members 41, the suspension cross 42, the lower cross member 43, the upper cross member 44, the pair of left and right box members 45, and the pair of left and right inclined frames 46. It is configured.

  As shown in FIGS. 2 and 6, the skeleton member 41 serves as a vehicle body skeleton member that constitutes the front body of the vehicle 1 and receives a collision load transmitted from the shock absorbing structure 6 at the time of a frontal collision (front collision) of the vehicle 1. This is an aluminum die-cast member having a function of forming a part of a load path that transmits to the vehicle compartment portion 2 side (rear of the vehicle body) via the frame member 5 and a function of supporting the suspension 3 in a swingable manner.

  As shown in FIGS. 2 and 4, the skeleton member 41 includes a skeleton body portion 41 </ b> A having a plate-like portion having a predetermined thickness in the vehicle width direction, and an edge of the skeleton body portion 41 </ b> A in the vehicle width direction. In a side view with a contour portion 41B that protrudes to the inner and outer sides of the frame and is formed in a substantially flat plate shape whose length in the vehicle width direction is wider than the thickness of the skeleton body portion 41A. It is integrally formed in a frame shape (substantially rectangular shape) having an opening 41s (hereinafter referred to as “central opening 41s”) (see FIGS. 2 and 4) in the center.

  Specifically, as shown in FIGS. 2 and 4, the skeleton member 41 constitutes an upper skeleton portion 411 extending in the vehicle longitudinal direction so as to constitute an upper frame of the skeleton member 41, and a lower frame of the skeleton member 41. Thus, the lower skeleton portion 412 extending in the vehicle front-rear direction, and the front skeleton portion that connects the substantially front ends of the upper skeleton portion 411 and the lower skeleton portion 412 in the vehicle vertical direction so as to constitute the front frame of the skeleton member 41 413, and a rear skeleton portion 414 that connects substantially rear ends of the upper skeleton portion 411 and the lower skeleton portion 412 in the vehicle vertical direction so as to constitute the rear frame of the skeleton member 41. Yes.

  More specifically, as shown in FIGS. 2 and 4, the upper skeleton portion 411 is formed in a substantially rectangular shape in a side view in which the length in the vehicle front-rear direction is longer than the length in the vehicle vertical direction in a side view. The upper corner portion and the rear upper corner portion are formed in a shape inclined in a chamfered shape when viewed from the side.

  Similarly, the lower skeleton portion 412 is formed in a substantially rectangular shape in a side view in which the length in the vehicle front-rear direction is longer than the length in the vehicle vertical direction in a side view. On the other hand, the front skeleton portion 413 and the rear skeleton portion 414 are formed in a substantially rectangular shape in a side view in which the length in the vehicle vertical direction is longer than the length in the vehicle front-rear direction in the side view.

  Further, a front upper inner corner side protrusion piece 41ca that protrudes toward the central opening 41s in a triangular shape in a side view is formed on the inner corner side of the corner portion of the upper skeleton portion 411 and the front skeleton portion 413. Similarly, on the inner corner side of the corner portion of the upper skeleton portion 411 and the rear skeleton portion 414, a front upper inner corner side protruding piece portion 41cb that protrudes toward the central opening 41s in a triangular shape in a side view is formed, and the front skeleton is formed. On the inner corner side of the corner portion of the portion 413 and the lower skeleton portion 412, a front lower inner corner side projecting piece portion 41cc that protrudes toward the central opening 41s in a triangular shape in a side view is formed.

  Further, as shown in FIGS. 1 and 3, the front surfaces of the upper skeleton portion 411 and the front skeleton portion 413 are both vertical walls extending continuously in the vertical direction and the vehicle width direction by forming a contour portion 41B. It is formed in a shape. Further, the lower skeleton portion 412 extends forward with respect to the front surface of the front skeleton portion 413 so that the sub impact absorbing member 65 (see FIG. 2) can be attached to the front end thereof.

  As shown in FIGS. 1 and 2, the upper skeleton portion 411 of the skeleton member 41 has an upper arm support portion 82 that is an outer surface in the vehicle width direction and supports the upper arm 33 on the front and rear sides. A damper support portion 83 that supports the upper end (damper top) of the damper 34 at the center in the front-rear direction is provided.

  Specifically, as shown in FIGS. 1 and 2, the upper arm support portion 82 is a shaft member that extends in the vehicle front-rear direction through the front connecting portion 33a (see FIG. 1) of the upper arm 33 and is inserted into the front connecting portion 33a. A shaft member (not shown) extending in the vehicle front-rear direction inserted through the rear connecting portion 33b is connected to the upper arm front support portion 82f pivotally supported (not shown) and the rear connecting portion 33b (see FIG. 1) of the upper arm 33. And an upper arm rear side support portion 82r that is pivotally supported via the omission).

  As shown in FIG. 2, the upper arm front support portion 82 f is formed by the front side fastening portion 82 fa and the rear rear fastening portion 82 fb of the skeleton member 41 with respect to the front connecting portion 33 a (see FIG. 1) of the upper arm 33. It is fastened to the outer surface in the vehicle width direction.

  Similarly, as shown in FIG. 2, the upper arm rear side support portion 82r has a skeleton formed by a front front fastening portion 82ra and a rear rear fastening portion 82rb with respect to the rear connecting portion 33b (see FIG. 1) of the upper arm 33. The member 41 is fastened to the outer surface in the vehicle width direction.

  The upper arm front side support part 82f and the upper arm rear side support part 82r are provided at substantially the same height (see FIGS. 1 and 2).

  As shown in FIGS. 1 and 2, the damper support portion 83 is a shaft member (not shown) that extends in the vehicle front-rear direction inserted through the upper connection portion 34 a (see FIG. 1) of the damper 34. It is pivoted through.

  As shown in FIG. 2, the damper support portion 83 includes a front-side front fastening portion 83 a and a rear-side rear fastening portion 83 b with respect to the upper connection portion 34 a (see FIG. 1) of the damper 34. Fastened to the outer surface in the width direction.

  As shown in FIG. 2, the damper support portion 83 is located between the upper arm support portions 82f and 82r on the front and rear sides of the upper skeleton portion 411 in the vehicle front-rear direction, and on the front and rear sides of the upper arm support portions 82f and 82r and the cover. It is provided at a position offset upward with respect to the upper end of the rear end connecting portion 41f.

  1 and 2, the lower skeleton portion 412 of the skeleton member 41 described above is provided with a lower arm support portion 81 for supporting the lower arm 32 on the front and rear sides on the outer surface in the vehicle width direction. Yes.

  Specifically, as shown in FIGS. 1 and 2, the lower arm support portion 81 is a shaft member that extends in the vehicle front-rear direction through the front connecting portion 32a (see FIG. 1) of the lower arm 32 and is inserted into the front connecting portion 32a. A lower arm front support portion 81f that is pivotally supported (not shown) and a rear connecting portion 32b (see FIG. 1) of the lower arm 32 are inserted into the rear connecting portion 32b and extend in the vehicle front-rear direction (not shown). And a lower arm rear side support portion 81r that is pivotally supported via the omission).

  As shown in FIG. 2, the lower arm front support portion 81 f is formed of the skeleton member 41 by a front front fastening portion 81 fa and a rear rear fastening portion 81 fb with respect to the front coupling portion 32 a (see FIG. 1) of the lower arm 32. It is fastened to the outer surface in the vehicle width direction.

  Similarly, as shown in FIG. 2, the lower arm rear side support portion 81r is formed by a front front fastening portion 81ra and a rear rear fastening portion 81rb with respect to the rear coupling portion 32b (see FIG. 1) of the lower arm 32. The member 41 is fastened to the outer surface in the vehicle width direction.

  The lower arm front support part 81f and the lower arm rear support part 81r are provided at substantially the same height (see FIGS. 1 and 2).

  As shown in FIGS. 2 to 5, the upper surface of the upper skeleton portion 411, the front upper rear lower inclined surface of the rear upper corner portion, and the rear surface are a side upper frame 51 as a frame member 5, and a center side frame. 52 and the side-side frame 53, the side-side upper frame joined portion 41a (see FIGS. 2 to 4), the center-side frame joined portion 41b (see FIGS. 2, 3, and 5), the side side Each of them is formed as a frame joined portion 41c (see the figure). As shown in FIGS. 2, 4, and 5, the lower rear surface of the rear skeleton 414 is formed as a side lower frame joined portion 41 d that connects the front end of the side lower frame 54 as the frame member 5, Further, as shown in the figure, the rear end of the lower skeleton portion 412 is formed as a center side lower frame joined portion 41 e that connects the front end of the center side lower frame 55 as the frame member 5.

  The joined parts 41a to 41e are formed with contact surfaces that can contact the front ends of the frame members 51 to 55 or recessed parts that can be fitted, and are connected by welding or the like.

  Specifically, the side-side upper frame 51 has a front end joined to the side-side upper frame joined portion 41a of the skeleton member 41 and a rear end joined to the front upper portion of the hinge pillar 23 (see FIGS. 2 and 6). . The center side frame 52 has a front end joined to the center side frame joined portion 41b of the skeleton member 41, and a rear end joined to the front end of the center tunnel frame 26 at a partition wall portion 25 in the vehicle longitudinal direction (FIG. 4, FIG. (See FIG. 6).

The side frame 53 has a front end joined to the side frame joined portion 41c of the skeleton member 41, and a rear end joined to the front of the shock absorbing member 28 from the inner side in the vehicle width direction (see FIGS. 2 and 4). . The side lower frame 54 has a front end joined to the side lower frame joined portion 41d of the skeleton member 41 and a rear end joined to the front surface of the side sill 21 (see FIGS. 2 and 7). The center side lower frame 55 has a front end joined to the center side lower frame joined portion 41e of the skeleton member 41, and a rear end joined to the front end of the tunnel side frame 27 (see FIG. 7).
The rear portions of the pair of left and right center side lower frames 55 are bridged by a cross member 29 extending in the vehicle width direction therebetween (see FIG. 7).

As shown in FIGS. 2 and 7, the reinforcing frame 56 has a front end (upper end) joined to a middle portion of the side upper frame 51 in the vehicle front-rear direction from the lower surface side, and a rear end (lower end) of the shock absorbing member. 28 is joined to the front surface. Further, as shown in FIG. 2, the side-side upper frame joined portion 41 a is formed in a portion directly above the damper support portion 83 on the upper surface of the upper skeleton portion 411.
In addition, the code | symbol 58 of FIG. 2 etc. is a reinforcement panel which connects the side frame 53 and the side lower frame 54 from the vehicle width direction outer side.

  As shown in FIGS. 1 to 4, the front surface of the skeleton member 41 having such a configuration has a range from the vicinity of the vehicle vertical direction substantially central portion of the upper skeleton portion 411 to the vehicle vertical direction substantially central vicinity of the front skeleton portion 413. In addition, it is configured as a rear wall end connecting portion 41f having a vertical wall shape to which the shock absorbing member 61 (the rear end connecting portion 613 of the shock absorbing member 61) of the shock absorbing structure 6 is connected.

  That is, as shown in FIG. 4, the rear end connecting portion 41 f of the shock absorbing member 61 is configured at a position straddling the upper skeleton portion 411 and the front skeleton portion 413 in the vertical direction, and the rear portion of the upper skeleton portion 411. At least a part of the center side frame joined portion 41b provided in the position is offset downward (that is, a low position).

  The center-side frame 52 is inclined in a front-lower-rear-upper-upward state so that an extension line 52x extending forward in the longitudinal direction intersects the rear-end connecting portion 41f located at the rear end of the shock absorbing member 61. It is arranged.

  Further, as shown in FIGS. 1 to 4 and 8, a set plate 47 to which an impact absorbing member 61 of an impact absorbing structure 6 to be described later is attached is joined to the rear end connecting portion 41 f of the skeleton member 41. The rear end connecting portion 613 of the shock absorbing member 61 is fastened and fixed via the mounting plate 63.

Next, the configuration of the suspension support structure 4 other than the skeleton member 41 will be described.
The suspension cross 42 is made of aluminum die-casting, and as shown in FIG. 7, is formed in a substantially H shape in a plan view that connects the lower part of the lower skeleton part 412 in the vehicle width direction.

  As shown in FIGS. 4 and 5, the suspension cross 42 extends downward from the bottom edge of the upper wall portion 42 a and the upper wall portion 42 a as viewed from the bottom, and forms left and right side surfaces, a front surface, and a rear surface of the suspension cross 42. It has a vertical wall portion 42b and has a space that opens downward in the interior and extends in the vehicle width direction.

  The lower cross member 43 is an extruded member made of an aluminum alloy extruded as shown in FIGS. 1, 3, and 4, and is particularly opposed to the lower cross member 43 with an interval in the vertical direction as shown in FIG. It is formed in the substantially cylindrical body which extended in the vehicle width direction the substantially rectangular closed cross section which has the upper wall part 43a and the lower wall part 43b which do. 1 to 5, the lower cross member 43 is an inner side in the vehicle width direction of the lower skeleton portion 412 of the skeleton member 41. As shown in FIG. 1, the lower cross member 43 is connected to the lower arm front side support portion 81f. It is joined to the opposite part in the vehicle width direction.

  Thus, the lower cross member 43 is disposed adjacent to the upper side of the suspension cross 42 at the front portion of the suspension cross 42 as shown in FIG. That is, as shown in FIG. 4, the suspension cross 42 and the lower cross member 43 are arranged on the upper and lower sides so that the lower wall portion 43b of the lower cross member 43 and the upper wall portion 42a of the suspension cross 42 come into contact with each other. It is installed side by side.

As shown in FIGS. 1, 3, and 4, the suspension cross 42 and the lower cross member 43 are fastened by bolts or the like at the center portion and the outer side portions in the vehicle width direction. From the right side of the direction to the left side, the right fastening portion Ta, the central fastening portion Tb, and the left fastening portion Tc are set.
The center fastening portion Tb will be described in detail. As shown in FIG. 4 and FIG. Is formed through.

  On the other hand, as shown in FIG. 4, bolt insertion holes 43 h are respectively provided in the vehicle width direction center portions (portions corresponding to the bolt insertion holes in plan view) of the lower wall portion 43 b and the upper wall portion 43 a of the lower cross member 43. The nut insertion hole 43i is formed through.

  Then, in the internal space of the lower cross member 43, the boss-like nut Na is fitted into the nut insertion hole 43i, and the bolt of the lower wall portion 43b is inserted in a standing posture extending upward from the lower wall portion 43b. It is erected from the periphery of the hole 43h.

  As a result, the bolt insertion hole 42h formed in the upper wall portion 42a of the suspension cross 42 and the lower wall portion 43b of the lower cross member 43 are formed at the center in the vehicle width direction of each of the suspension cross 42 and the lower cross member 43. The bolt insertion hole 43h and the bolt insertion hole Nah inside the nut Na communicate with each other in the vertical direction (see FIG. 4).

The suspension cross 42 and the lower cross member 43 are integrally fastened and fixed by inserting bolts into the bolt insertion holes 42h, 43h, and Nah from below.
Note that the right side fastening portion Ta and the left side fastening portion Tc have the same configuration as the central fastening portion Tb, and a description thereof will be omitted.

The upper cross member 44 is an extruded member made of an aluminum alloy that has been extruded as shown in FIGS. 1, 3 to 6 and FIG. 8, particularly FIGS. 4 and 8, and has a substantially rectangular closed cross section. It is formed in a substantially cylindrical body extending in the width direction. As shown in FIGS. 1 and 8, the upper cross member 44 is joined to the inner surface side of the skeleton member 41 in the vehicle width direction and facing the upper arm front side support portion 82 f on the inner side in the vehicle width direction. .
In this way, the upper cross member 44 is joined to the portion facing the upper arm front side support portion 82f on the inner side in the vehicle width direction, thereby increasing the support rigidity of the upper arm 33 by the upper arm front side support portion 82f from the inner side in the vehicle width direction.

  As shown in FIG. 8, the box member 45 is an extruded member made of extruded aluminum alloy, and has a stepped shape in which the front surface is located on the inner side in the vehicle width direction and the outer side in the vehicle width direction is located behind the vehicle. Is formed.

  The box member 45 having such a structure has a rear surface joined to the front surface of the upper cross member 44, and a surface 452 on the outer side in the vehicle width direction of the front surface is joined to the rear surface of the rear end connecting portion 41f of the skeleton member 41. An inner surface 451 in the vehicle width direction is joined to the rear surface of the set plate 47.

  As shown in FIGS. 1, 3 to 5, and 8, the pair of left and right inclined frames 46 are extruded members made of extruded aluminum alloy, and have a substantially rectangular closed section extending in a predetermined direction. As shown in FIGS. 1, 3, and 5, the lower end portions are arranged so as to face each other in a close state in the vehicle width direction, and the distance between them increases toward the upper side. It is inclined like this and is arranged in a V shape in front view.

1, 4, 5, and 6, the inclined frame 46 has an upper end attached to a portion facing the damper support portion 83 in the vehicle width direction on the inner surface side of the skeleton member 41 in the vehicle width direction. Joined via a bracket 147, the lower end is joined via a mounting bracket 48 at a position approximately in the center of the suspension cross 42 in the vehicle width direction and near the rear side of the lower cross member 43.
In this way, by joining the upper end of the inclined frame 46 to the portion facing the damper support portion 83 on the inner side in the vehicle width direction (see FIG. 1), the support rigidity of the damper 34 by the damper support portion 83f is increased from the inner side in the vehicle width direction. It is increasing.

  Here, the mounting bracket 48 for joining the lower end of the inclined frame 46 to the approximate center in the vehicle width direction of the suspension cross 42 is rectangular in plan view as shown in FIG. 4 and FIG. The formed flat base portion 481 and a pair of front and rear guide portions 482 erected from each side of the base frame 481 spaced from the vehicle longitudinal direction width of the inclined frame 46 with respect to the vehicle longitudinal direction center portion. Is formed.

  The inclined frame 46 is fitted between the pair of front and rear guide portions 482 so that the front and rear surfaces of the inclined frame 46 are in contact with the pair of front and rear guide portions 482. They are joined together by welding or the like.

  Further, the base portion 481 of the mounting bracket 48 is formed with a plurality of bolt insertion holes 48a that are fastened by bolts or the like to the upper wall portion 42a of the suspension cloth 42 (see an enlarged portion of the portion X in FIG. 5).

  Specifically, as shown in FIGS. 4 to 7, the bolt insertion holes 48 a are on the left and right sides located on the inner side of the pair of front and rear guide portions 482 in the vehicle front-rear direction of the base portion 481 and on the intermediate side in the vehicle width direction. And a total of six locations located at the four corners of the rectangular base portion 481 in plan view.

  On the other hand, as shown in FIGS. 5 and 7, bolt insertion holes 42 i are formed in portions of the upper wall portion 42 a of the suspension cloth 42 corresponding to the plurality of bolt insertion holes 48 a on the mounting bracket 48 side as viewed from the bottom (FIG. 7), and communicates with the bolt insertion holes 48a. The mounting bracket 48 is fastened and fixed to the upper wall portion 42a of the suspension cloth 42 using bolts or the like.

  As a result, as shown in FIG. 4, the lower end portion of the inclined frame 46 is attached to the rear vicinity position (rear side adjacent position) of the central fastening portion Tb described above via the mounting bracket 48.

  Further, the inclined frame 46 is disposed at a position adjacent to the upper cross member 44 at the rear.

  Specifically, the inclined frame 46 is bridged between the damper support portion 83 positioned on the upper side with respect to the upper cross member 44 and the suspension cross 42 positioned on the lower side. It extends so as to cross (cross) the upper cross member 44 extending rearward in the vertical direction (see FIGS. 1, 3 and 5).

  More specifically, the damper support portion 83 is provided in a vicinity position (adjacent position) offset upward and rearward with respect to the above-described upper arm front side support portion 82f. Therefore, the inclined frame 46 that extends downward from a position corresponding to the damper support portion 83 in a side view is located at a position near the rear with respect to the upper cross member 44 that bridges the pair of left and right upper arm front support portions 82f in the vehicle width direction. Extend so as to cross in the vertical direction.

  In this example, at the position where the inclined frame 46 and the upper cross member 44 wrap (intersect) in front view, the front wall portion 46a of the inclined frame 46 and the rear wall portion 44a of the upper cross member 44 abut each other. They are connected to each other at a position where they wrap in front view.

Specifically, as shown in FIGS. 4 and 8, at the position where the inclined frame 46 and the upper cross member 44 wrap (intersect) in a front view, the rear wall portion 44 a of the upper cross member 44 and the inclined frame 46. Bolt insertion holes 44h and 46h communicating with each other in the front-rear direction are formed through the front wall portion 46a.
As shown in FIG. 8, a welder nut Nb is welded to the periphery of the bolt insertion hole 46h formed in the front wall portion 46a on the rear surface of the front wall portion 46a of the inclined frame 46.

  Further, as shown in FIG. 1, FIG. 3 and FIG. 8, particularly in FIG. 8, the front wall portion 44b of the upper cross member 44 has a portion facing the bolt insertion hole 44h provided in the rear wall portion 44a and its peripheral portion. A through hole 44i (service hole) for bolt fastening or the like is formed in the vehicle front-rear direction.

  Then, bolts are inserted from the front side into the bolts through holes 44h, 44h, Nbh of the upper cross member 44, the front wall part 46a of the inclined frame 46, and the welder nut Nb through the work through holes 44i. The inclined frame 46 is fastened and fixed to the rear surface of the upper cross member 44 as described above.

  As described above, the front vehicle body structure of the vehicle 1 of the present embodiment has the damper support for supporting the upper arm support portion 82 (82f, 82r) for supporting the upper arm 33 of the suspension 3 and the damper 34, as shown in FIG. A pair of left and right skeleton members 41 provided with a portion 83 on the outer side in the vehicle width direction and disposed at a predetermined interval in the vehicle width direction of the vehicle 1, and an upper arm among upper arm support portions 82 (82f, 82r) on the front and rear sides An upper cross member 44 (cross member) connected to the skeleton member 41 at a position facing the front support portion 82f on the inner side in the vehicle width direction and bridged between the left and right skeleton members 41 (see FIGS. 1 to 5); A vehicle including a suspension cross 42 connected to the left and right skeleton members 41 below the upper cross member 44 and bridged between the skeleton members 41. The damper support portion 83 is provided at an adjacent position that is offset upward and in the front-rear direction with respect to the upper arm front-side support portion 82f (see FIGS. 1 and 2). A pair of left and right slopes whose upper end (one end) is connected to the damper support portion 83 in the member 41 on the inner side in the vehicle width direction, and whose lower end (other end) is connected to the vehicle width direction center portion of the suspension cross 42. A frame 46 (brace member) is provided (see FIGS. 1 and 3 to 5).

  According to the above configuration, the support rigidity of the upper arm 33 and the damper 34 can be efficiently improved by providing the upper cross member 44 and the inclined frame 46 adjacent to each other.

  More specifically, the upper cross member 44 is connected to a position facing the upper arm front side support portion 82f on the inner side in the vehicle width direction, with respect to the damper support portion 83 positioned further above the upper arm front side support portion 82f. The upper end of the inclined frame 46 is connected to a position facing the inner side in the vehicle width direction.

  Accordingly, the upper end of the inclined frame 46 can be connected so as to be positioned above the upper cross member 44, while the lower end of the inclined frame 46 can be connected to the suspension cross 42 positioned below the upper cross member 44.

  Accordingly, the inclined frame 46 can be provided so as to intersect the upper cross member 44 extending in the vehicle width direction in the vertical direction when viewed from the front (see FIGS. 1 and 3 to 5). Further, since the damper support portion 83 is provided at an adjacent position offset in the front-rear direction with respect to the upper arm front side support portion 82f, the inclined frame 46 bridged between the damper support portion 83 and the suspension cross 42 is provided on the front side of the upper arm. It can be provided at a position adjacent to the upper cross member 44 bridged between the support portions 82f in the front-rear direction (see FIGS. 1, 4, 6, and 8).

  Accordingly, the inclined frames 46 can be arranged to be adjacent to each other in the front-rear direction at a position where they wrap (cross) in front view with respect to the upper cross member 44, so that the mutual rigidity can be enhanced. The support rigidity of the upper arm 33 and the damper 34 can be effectively increased by using the upper cross member 44 to raise the support rigidity of the damper 34 by the damper support part 83 and by the damper support part 83 separately.

  As an aspect of the present invention, the inclined frame 46 is connected to the upper cross member 44 at a position where it wraps in a front view (see FIGS. 1, 4, 5, and 8).

  According to the above configuration, the upper cross member 44 can mainly increase the support rigidity in the vehicle width direction of the upper arm support portion 82 by bridging between the upper arm support portions 82 as described above. On the other hand, the inclined frame 46 can increase the support rigidity of the damper 34 that mainly moves up and down by bridging between the damper support portion 83 and the suspension cross 42 as described above.

  Then, by connecting the upper cross member 44 and the inclined frame 46 to each other, it is possible to mutually increase the suspension support rigidity.

  As an aspect of the present invention, the damper support portion 83 is formed adjacent to the rear of the upper arm front support portion 82f among the upper arm support portions 82f and 82r provided on the front and rear sides (see FIGS. 1 and 2). The upper cross member 44 is fastened at a position where the upper cross member 44 is overlapped with the adjacent inclined frame 46 in a front view (see FIGS. 3 to 5 and 8), and the inclined frame 46 in the upper cross member 44. A work through hole 44i (fastening opening) that opens in the front-rear direction is formed at a front portion of the fastening place to be fastened (see FIGS. 1, 3, and 8).

  Specifically, the rear wall portion 44a of the upper cross member 44 and the front wall portion 46a of the inclined frame 46 are connected by being fastened together at a position where the inclined frame 46 wraps with the upper cross member 44 in a front view. 8 (see FIG. 8), the front wall 44b of the upper cross member 44 has a working penetration opening in the front-rear direction at a portion of the rear wall 44a that faces the fastening portion with the inclined frame 46 in front. The hole 44i is formed through (see the same figure).

  According to the said structure, the assembly property of the suspension support structure 4 and the assembly | attachment property to a vehicle body are securable.

  More specifically, the suspension support structure 4 is arranged below the engine (not shown) mounted in the front engine room of the vehicle 1 in a layout in which the suspension cross 42 extends in the vehicle width direction.

  For this reason, when the engine and the suspension support structure 4 are assembled to the vehicle body, the suspension support structure 4 is generally assembled from below the vehicle body after the engine is mounted on the engine room from below the vehicle body. Further, when the suspension support structure 4 is assembled to the vehicle body as described above, the suspension support structure 4 is first assembled to the vehicle body before the inclined frame 46 is attached, and then the inclined frame 46 is mounted on the upper cross included in the suspension support structure 4. Attach to member 44 and the like.

  However, when the inclined frame 46 is fastened and fixed to the upper cross member 44 so as to be adjacent to the rear side of the upper cross member 44 as described above, the fastening operation is performed from the rear side of the inclined frame 46. However, as described above, since the engine is already mounted behind the upper cross member 44, it is difficult to secure a work space for fastening bolts due to layout restrictions, and the assembling performance is significantly reduced. There is concern.

  On the other hand, as in this embodiment, by providing the work through hole 44i in the front wall portion 44b of the upper cross member 44, the upper cross member 44 can be seen from the front side through the work through hole 44i. The cross member 44 and the inclined frame 46 can be fastened.

  Therefore, even in the configuration in which the inclined frame 46 is attached to the rear surface of the upper cross member 44 provided in the suspension support structure 4 after the engine and the suspension support structure 4 are assembled to the vehicle body, the engine room has already been provided. A fastening work space for bolt insertion and the like can be secured without being restricted by the layout of the engine mounted on, and the inclined frame 46 can be easily assembled.

  As an aspect of the present invention, a lower arm support portion 81 is formed on the skeleton member 41 (see FIGS. 1 and 2), and a lower cross member 43 (lower cross member) bridged between the lower arm support portions 81 is provided (FIG. 1). 3, FIG. 4, FIG. 5), the lower cross member 43 is connected at the center of the suspension cross 42 in the vehicle width direction (FIGS. 1, 3, 4, 5, 7). (See the middle fastening portion Tb in the middle).

  According to the above configuration, the lower end of the inclined frame 46 is connected at the center of the suspension cross 42 in the vehicle width direction (see FIGS. 1 and 4 to 6). And the connecting portion (center fastening portion Tb) connecting the lower cross member 43 at the center in the vehicle width direction of the suspension cross 42 can be provided at positions close to each other in the front-rear direction. (See particularly FIG. 4) The rigidity of the center in the vehicle width direction of the suspension cloth 42 to which the inclined frame 46 is connected can be improved.

  As an aspect of the present invention, the connecting portion of the inclined frame 46 to the skeleton member 41 is provided on the skeleton member 41 on the inner side in the vehicle width direction with respect to the damper support portion 83 (see FIGS. 1 and 2). 4 and 5), and includes a side-side upper frame 51 as a frame member 5 that connects the portion directly above the damper support portion 83 and the hinge pillar 23 on the upper surface portion of the skeleton member 41 (FIGS. 2, 4, and 5). 6), a lower portion of the side-side upper frame 51 is connected to an impact absorbing member 28 (extending member) extending forward from the hinge pillar 23 (see FIGS. 2 and 4). A reinforcing frame 56 (reinforcing member) that reinforces from below is provided (see the figure).

  According to the above configuration, in addition to increasing the support rigidity of the damper 34 from the inward side of the damper support portion 83 by the inclined frame 46, the side upper frame 51 and the reinforcing frame 56 are utilized using the upper surface portion of the skeleton member 41. Thus, the height can be increased also from the upper side of the damper support portion 83.

  The present invention is not limited to the configuration of the above-described embodiment, and can be formed in various embodiments.

1 ... Vehicle 3 ... Front suspension (suspension)
23 ... Hinge pillar 28 ... Shock absorbing member (front extending member)
33 ... Upper arm 32 ... Lower arm 34 ... Front suspension damper (damper)
41 ... frame member 42 ... suspension cross member (suspension cross)
43 ... Lower cross member (lower cross member)
44 ... Upper cross member (cross member)
44i ... Work through hole (fastening opening)
46 ... Inclined frame (brace member)
51... Side-side upper frame (frame member connecting the upper surface of the skeleton member and the hinge pillar)
56 ... Reinforcing frame (reinforcing member)
81 ... Lower arm support portion 82 ... Upper arm support portion 82f ... Upper arm front support portion 83 ... Damper support portion 82r ... Upper arm rear support portion (rear upper arm support portion)

Claims (5)

A pair of left and right skeletal members provided with an upper arm support portion for supporting the upper arm of the suspension and a damper support portion for supporting the damper on the outer side in the vehicle width direction and arranged at a predetermined interval in the vehicle width direction of the vehicle;
A cross member bridged between the left and right upper arm support portions;
A vehicle front body structure including a suspension cross that is bridged between the left and right skeleton members below the cross member,
The damper support portion is provided at an adjacent position offset upward and in the front-rear direction with respect to the upper arm support portion,
A vehicle front body structure including a pair of brace members bridged across the cross member between the damper support portion and the center of the suspension cross in the vehicle width direction. The front body structure of a vehicle according to claim 1, wherein the brace member is coupled to the cross member at a position where the brace member is wrapped in a front view. The damper support portion is formed adjacent to the rear side of the upper arm front side support portion of the upper arm support portions provided on the front and rear sides, and the cross member is in front of the brace member adjacent on the rear side. It is connected by fastening at the position where it wraps visually,
The vehicle front body structure according to claim 2, wherein a fastening opening that opens in the front-rear direction is formed at a front portion of a fastening portion to be fastened to the brace member in the cross member. A lower arm support portion that supports the lower arm of the suspension is formed on the skeleton member, and includes a lower cross member that is bridged between the lower arm support portions,
The vehicle front body structure according to any one of claims 1 to 3, wherein the lower cross member is connected at a center of the suspension cross in the vehicle width direction. The connection portion of the brace member to the skeleton member is provided on the skeleton member on the inner side in the vehicle width direction of the damper support portion,
A frame member that connects the upper surface portion of the skeleton member and the hinge pillar is provided, and a lower portion of the frame member is connected to a front extending member that extends forward from the hinge pillar to reinforce the frame member from below. The vehicle front body structure according to any one of claims 1 to 4, further comprising a reinforcing member.

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