JP6478019B2 - Vehicle body front structure of vehicle - Google Patents

Description

  The present invention relates to the structure of the front portion of a car body.

  BACKGROUND Conventionally, there is known a vehicle in which a body frame is connected to a chassis frame. In such a vehicle, the body frame is connected to the chassis frame via a body mount member provided with an elastic member such as a body mount bracket or rubber (see, for example, Patent Document 1).

  In the vehicle structure according to Patent Document 1, a front end cross member, which is a part of a body frame, is supported by a chassis frame via a body mount member. A planar headlamp support panel is attached between the front end cross member and the front end upper bar. The head lamp support panel and the body mount member are disposed so as to substantially overlap in the vertical direction, so the load input to the front end cross member from the chassis frame side via the body mount member is the head lamp support panel or the front end I will concentrate on the upper bar. Therefore, if a heavy use condition such as loading a large amount of luggage and traveling on a bad road continues, there is a possibility that the headlamp support panel and the front end upper bar may be damaged.

Patent No. 4100389

  The present invention has been made in view of the above situation, and in a vehicle in which a body frame is connected to a chassis frame, a vehicle body front structure of the vehicle capable of distributing the load applied from the chassis frame to the body frame Intended to be provided.

According to a first aspect of the present invention for solving the above problems, there is provided a support member having a chassis frame having a pair of side frames spaced apart in the vehicle width direction and extending in the vehicle longitudinal direction, and a mount made of an elastic material on the chassis frame. A vehicle body front structure of a vehicle including a body frame resiliently supported, the body frame being a pair of upper frames continuously extending from the front pillar of the vehicle to the front of the vehicle, and a front end of the vehicle An upper bar extends in the vehicle width direction and both ends are connected to each of the pair of upper frames, and extends in the vehicle width direction below the upper bar and supported by the side frame via the support member And a connecting member for connecting the upper bar and the cross member, wherein the upper frame is Side is in the vehicle body front structure of a vehicle, characterized in that it is connected to the cross member.

  In the first aspect, since the load input through the support member can be dispersed by the plurality of members of the connecting member and the upper frame, the input load is prevented from being concentrated on any of those members. The durability of the vehicle body can be improved.

  According to a second aspect of the present invention, in the vehicle structure described in the first aspect, the connection member is connected to the cross member on the inner side in the vehicle width direction than the support member, and the upper frame is the support member The vehicle structure is characterized in that it is connected to the cross member at the outer side in the vehicle width direction than the vehicle.

  In the second aspect, the load input through the support member can be distributed in a well-balanced manner to both the connecting member and the upper frame, so that it is more reliable that the load is concentrated on any of those members. Can be avoided.

  According to a third aspect of the present invention, in the vehicle structure described in the first or second aspect, the upper frame has a closed cross-sectional structure, and the tip end side is extended so that the height gradually decreases toward the vehicle front. A vehicle structure characterized by being provided.

  In the third aspect, the load input via the support member can be reliably received by the upper frame and can be smoothly transmitted to the vehicle rear side.

  According to a fourth aspect of the present invention, in the vehicle structure described in any one of the first to third aspects, the connecting member is extended in the vertical direction of the vehicle to hold a radiator. A head lamp support panel for holding a head lamp is provided on the outer side of the radiator support ring hose in the vehicle width direction, the head lamp support panel being joined to the rear side of the cross member, and the cross member A vehicle structure characterized by forming a closed cross section and being joined to the upper frame.

  In the fourth aspect, the rigidity of the portion between the radiator support phosphorus hose and the upper frame can be enhanced, and the load input from the side member (chassis frame) via the support member can be reliably ensured. And can be transmitted to the upper frame.

  According to the present invention, there is provided a vehicle body front structure of a vehicle capable of improving the durability by dispersing the load applied from the chassis frame side to the body frame side in a vehicle formed by connecting the body frame on the chassis frame. Be done.

It is a perspective view showing the vehicle body front structure of a vehicle. It is a top view of the vehicle body front structure of a vehicle. FIG. 1 is a left side view of a vehicle body front structure of a vehicle and an enlarged view thereof. It is a front view of the vehicle body front structure of a vehicle. It is the sectional view on the AA line of FIG. It is the BB sectional drawing of FIG.

  Hereinafter, modes for carrying out the present invention will be described. The description of the embodiment is an exemplification, and the present invention is not limited to the following description.

Embodiment 1
FIG. 1 is a perspective view showing a vehicle body front structure of a vehicle according to this embodiment, FIG. 2 is a plan view of a vehicle body front structure of a vehicle according to this embodiment, and FIG. 3 is a vehicle according to this embodiment FIG. 4 is a front view of the vehicle body front structure of the vehicle according to the present embodiment, and FIG. 5 is a sectional view taken along line AA of FIG. 6 is a cross-sectional view taken along the line B-B of FIG. The X direction in the figure is the vehicle width direction of the vehicle, the Y direction is the longitudinal direction of the vehicle, and the Z direction is the height direction of the vehicle. In FIG. 1, the chassis frame 10 is not shown.

  A vehicle body front structure 1 (hereinafter also referred to as a vehicle body front structure) of a vehicle according to the present embodiment includes a chassis frame 10 and a body frame 20 supported by the chassis frame 10. The chassis frame 10 includes a pair of left and right side frames 11 spaced apart in the vehicle width direction of the vehicle and extending in the vehicle longitudinal direction.

  The engine is mounted on the upper surface of the side frame 11 via an engine mount, and the front wheel and the front wheel suspension device are attached to the lower surface of the side frame 11 via a suspension cross member. Although various accessories and parts are attached to the side frame 11 besides them, the illustration thereof is omitted.

  A crash can 12 is provided at the front end of each side frame 11, and a bumper hose 13 extending in the vehicle width direction is provided. When the vehicle collides forward, the impact transmitted to the side frame 11 from the bumper hose 13 via the crash can 12 is absorbed.

  The body frame 20 includes a pair of upper frames 21, an upper bar 22, a cross member 23, a body mount member 24 which is an example of a support member, and a radiator support phosphorus hose 25 which is an example of a connection member. .

  Specifically, a pair of front pillars 30 extending in the vertical direction of the vehicle is provided on the left and right sides of the front portion of the vehicle compartment of the vehicle, and the front pillars 30 have a pair of left and right The proximal end of the upper frame 21 is joined. The left and right front pillars 30 are connected by a cowl top panel 31 extending in the vehicle width direction, and below the cowl top panel 31, a dash panel 32 that divides a vehicle compartment and a region (food room) ahead of the vehicle compartment. Is arranged.

  The upper frame 21 is provided to extend forward from the left and right front pillars 30 of the vehicle to the passenger compartment. The upper frame 21 is bent diagonally downward and forward halfway so that the front end side is lower in the height direction of the vehicle than the base end side, and is fixed to the end of the cross member 23 by welding or the like. The upper frame 21 does not necessarily have to be bent halfway, and may have a shape in which the tip end side is extended so as to gradually decrease in height toward the front of the vehicle.

  Upper frame 21 has a closed cross-sectional shape. In the present embodiment, a closed cross-sectional shape is formed by bonding together the first steel plate 21a and the second steel plate 21b in which the two cross sections are bent in an L-shape. The upper frame 21 does not have to have the same closed cross-sectional shape from the proximal end to the distal end, and the size and shape of the closed cross-section may change.

  A hood hinge for supporting the bonnet hood so as to open and close freely is attached to the upper frame 21. Further, the fender panel is attached to the upper frame 21 at the outer side in the vehicle width direction. The bonnet hood, hood hinge and fender panel are not shown.

  The upper bar 22 is a member whose both ends are connected to each of the pair of upper frames 21 and which is extended in the vehicle width direction. The upper bar 22 of the present embodiment is connected to the upper frame 21 and is continuous from the pair of base end 22a and base end 22a extended to the front of the vehicle, and bent inward in the vehicle width direction to front the vehicle And a connecting portion 22c which extends from the bending portion 22b and extends in the vehicle width direction so as to connect the pair of bending portions 22b.

  The cross member 23 extends in the vehicle width direction below the upper bar 22 and is supported by the side mount 11 by the body mount member 24. The cross member 23 is supported (connected) by the side frame 11 via the body mount member 24 in the vicinity of the both ends thereof. The cross member 23 has the tip end portion of the upper frame 21 fixed at both ends. Note that, in the present embodiment, the cross member 23 is formed in a hat-shaped cross section that protrudes toward the vehicle front side. The hat-shaped cross section has a first surface located on the front side of the vehicle and extending in the height direction, and two second surfaces continuous on the first surface and extending in the front-rear direction, and the rear side of the vehicle is open. The cross-sectional shape of the cross member 23 is referred to. The angle formed by the first surface and the second surface does not have to be a right angle, and may be substantially C-shaped, each of which is gently curved.

  The upper bar 22 and the cross member 23 are connected by a radiator support ring hose 25 that holds a radiator (not shown).

  The radiator support link hose 25 is a columnar member extending in the vertical direction of the vehicle, and the upper and lower end portions thereof are fixed to the upper bar 22 and the cross member 23. The radiator support ring hose 25 holds a radiator (not shown).

  Further, in the present embodiment, a plate-like headlamp support panel 26 on which the headlamps are supported is continuously provided integrally with the radiator support ring hose 25 on the outer side in the vehicle width direction of the radiator support ring hose 25 There is. The headlamp support panel 26 extends in the vertical direction along the radiator support ring hose 25 and extends in the vehicle width direction along the cross member 23 and is joined to the upper bar 22 and the cross member 23 at the upper and lower end portions. It is joined to the tip of upper frame 21 at the end on the outside in the direction. Further, the lower end of the headlamp support panel 26 is joined so as to overlap the rear side (the side where the surface is recessed) of the cross member 23, and forms a closed cross section with the cross member 23. That is, a portion of the cross member 23 outside the radiator support ring hose 25 in the vehicle width direction is formed in a closed cross section and joined to the upper frame 21. The head lamp support panel 26 is formed with a notch 26a cut into a shape in which the head lamp is exposed according to the outer shape of the head lamp.

  Such a body frame 20 is supported by the side frame 11 (chassis frame 10) via the body mount member 24. Specifically, each of the side frames 11 is provided with a mounting portion 27 that protrudes outward in the vehicle width direction, and the cross member 23 of the body frame 20 is mounted on the mounting portion 27 via the mount bracket 28 and the mount 29. It is connected.

  The mounting bracket 28 has a first surface 28 a attached to the rear surface of the cross member 23 (a portion of the head lamp support panel 26 where the hat cross member 23 is a closed cross section) and a first surface 28 a facing the mounting portion 27. It comprises two members 28b and is a member obtained by bending a steel plate or the like into an L-shape. The mounting bracket 28 has a first surface 28 a fixed to the cross member 23 by a fixing member such as welding or a bolt.

  The mount 29 is, for example, a member made of an elastic material such as a resin material or a rubber material. The mount 29 is fixed to the mounting portion 27 and the mounting bracket 28. That is, the cross member 23 having the mounting bracket 28 is supported by the side frame 11 having the mounting portion 27 via the mount 29.

  The body mount member 24 which is an example of such a support member suppresses transmission of vibration of the chassis frame 10 during traveling of the vehicle to the body frame 20 via the mount bracket 28. That is, the vibration generated in the chassis frame 10 while the vehicle is traveling is absorbed by the deformation of the mount 29, and the transmission of the vibration to the body frame 20 is suppressed.

  The support member is not limited to the aspect of the body mount member 24 of the present embodiment, and may be configured to be able to support the chassis frame 10 via a member that absorbs an impact from the side frame 11. For example, the mount 29 may be directly attached to the side frame 11 or the cross member 23 without the attachment portion 27 or the mount bracket 28. Further, the body mount member 24 may be configured to support the cross member 23 from the bottom surface side of the cross member 23.

  A radiator support ring hose 25 which is an example of the connecting member connects the upper bar 22 and the cross member 23 inside the body mount member 24 which is an example of the support member in the vehicle width direction. The upper frame 21 is connected to the cross member 23 outside the body mount member 24 in the vehicle width direction.

  That is, in the front view of FIG. 4, those members are fixed so that the radiator support link hose 25 and the upper frame 21 are disposed on both sides of each body mount member 24.

  According to the vehicle body front structure 1 of the vehicle according to the present embodiment described above, the load input to the cross member 23 from the chassis frame 10 (side frame 11) through the body mount member 24 is a connecting member. Not only the radiator support ring hose 25 but also the upper frame 21 can be directly transmitted. As described above, since the load input through the body mount member 24 can be dispersed and received by the plurality of members of the radiator support ring hose 25 and the upper frame 21, any of the radiator support ring hose 25 and the upper frame 21 can be used. It is possible to prevent the concentration of the input load on such members and improve the durability.

  In particular, as shown by the arrows in FIG. 4, in the vehicle body front structure 1 of the vehicle according to the present embodiment, the radiator support ring hose 25 and the upper frame 21 are provided on both sides of the body mount member 24. With such a structure, the load input via the body mount member 24 can be dispersed in a well-balanced manner to both sides, so that the load is concentrated on any member of the radiator support phosphorus hose 25 or the upper frame 21. Can be avoided more reliably.

  Further, the upper frame 21 is continuously extended while having a closed cross-sectional shape, and is connected to the cross member 23 in a state in which the rigidity is secured. Here, continuous means that the closed cross section of the upper frame 21 extends to the cross member 23 without interruption. Moreover, since the upper frame 21 is inclined obliquely downward toward the front side of the vehicle, the load input to the cross member 23 through the body mount member 24 is reliably received by the upper frame 21 and smoothed toward the vehicle rear side. Can be transmitted to

  Further, since the cross member 23 forms a closed cross section with the headlamp support panel 26, the rigidity of the portion between the radiator support ring hose 25 of the cross member 23 and the upper frame 21 is improved, and the chassis frame 10 (side The load input from the frame 11) through the body mount member 24 can be transmitted to the radiator support ring hose 25 and the upper frame 21 more reliably.

  As mentioned above, although one embodiment of the present invention was described, of course, the present invention is not limited to the above-mentioned embodiment, and addition, omission, substitution of composition within the range which does not deviate from the meaning of the present invention. And other changes are possible.

  The invention can be used in the automotive sector.

1 Vehicle Body Front Structure 10 Chassis Frame 11 Side Frame 20 Body Frame 21 Upper Frame 22 Upper Bar 23 Cross Member 24 Body Mounting Member (Support Member)
25 Radiator Support Ring Hose (Connection Member)
30 front pillar

Claims (4)

A vehicle comprising: a chassis frame including a pair of side frames spaced apart in a vehicle width direction and extending in a longitudinal direction of the vehicle; and a body frame elastically supported via the support member having a mount made of an elastic material on the chassis frame. Front body structure,
The body frame is
A pair of upper frames continuously extending from the front pillar of the vehicle to the front of the vehicle;
An upper bar extending in the vehicle width direction at a front end of the vehicle, and both ends of which are connected to the pair of upper frames,
A cross member extending in the vehicle width direction below the upper bar and supported by the side frame via the support member;
A connecting member for connecting the upper bar and the cross member;
The upper frame has a front end side connected to the cross member. A vehicle body front structure of a vehicle. In the vehicle body front structure of a vehicle according to claim 1,
The connecting member is connected to the cross member on the inner side in the vehicle width direction than the support member,
The vehicle body front structure of a vehicle, wherein the upper frame is connected to the cross member on the outer side in the vehicle width direction than the support member. In the vehicle body front structure of a vehicle according to claim 1 or 2,
The upper frame has a closed cross-sectional structure, and a tip end side is extended so as to gradually decrease in height toward the front of the vehicle. A vehicle body front structure of a vehicle. In the vehicle body front structure of a vehicle according to any one of claims 1 to 3,
The connecting member includes a pair of radiator support ring hoses which extend in the vertical direction of the vehicle and hold the radiator.
A headlamp support panel for retaining headlamps is provided on the outside of the radiator support link hose in the vehicle width direction,
The head lamp support panel is joined to the rear side of the cross member having a hat-shaped cross section so as to form a closed cross section with the cross member and is joined to the upper frame. Construction.

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