JP6500589B2 - Body frame structure - Google Patents

Description

  The present invention relates to a vehicle body frame structure that suppresses movement of wheels in the vehicle longitudinal direction when the vehicle body receives a load from the vehicle longitudinal direction.

  According to the technique of Patent Document 1, a side frame which is a frame member of a vehicle body is provided with a stopper member which prevents the front wheel from moving rearward in the event of a vehicle collision. As a result, the wheels are prevented from coming into contact with the side frames, and the amount of intrusion of the side frames or the like into the passenger compartment is reduced.

Patent No. 3700360

  By the way, vehicle parts, such as fuel piping, may be attached to the side frame which is a frame member of a vehicle body. In this case, there is a possibility that the wheel moved at the time of a vehicle collision may come into contact with a vehicle component such as a fuel pipe.

  Then, this invention aims at suppressing that the wheel which moves by receiving an impact load in the vehicle front-back direction by the vehicle body contacts the vehicle components attached to a vehicle body frame member.

According to the present invention, a wheel movement suppressing member for suppressing movement of the wheel in the longitudinal direction of the vehicle is attached to a vehicle body frame member on the center side in the longitudinal direction of the vehicle with respect to the wheel. The wheel movement suppressing member is extended from the inner side in the vehicle width direction of the contact portion toward the wheel side, and is located on the opposite side of the vehicle body frame member with the vehicle parts interposed, and the wheel moves inward in the vehicle width direction. And a wheel inner side movement restraining unit.

  According to the present invention, when the wheel is in contact with the contact portion of the wheel movement restraining member and movement in the vehicle longitudinal direction is suppressed, the wheel inner side movement restraining portion is positioned on the inner side in the vehicle width direction of the wheel. Suppress the movement of the wheel to the side. Thereby, it can suppress that a wheel contacts to the vehicle component attached to a vehicle body frame member.

FIG. 1 is a plan view of a vehicle body frame structure according to an embodiment of the present invention. It is a top view which expands and shows the principal part of FIG. It is a perspective view which expands and shows the principal part of FIG. It is a disassembled perspective view of the stopper member used for the vehicle body frame structure of FIG. It is the front view seen from the vehicle front of the stopper member circumference. It is the side view seen from the cross direction outside of the stopper member outside. It is the side view seen from the cross direction inner side of a stopper member. FIG. 5 is an operation explanatory view showing a state in which the vehicle receives an impact load from the front in the state of FIG. 1; FIG. 9 is an operation explanatory view showing a state in which the front wheel is prevented from moving inward in the vehicle width direction when the vehicle receives an impact load as shown in FIG. 8;

  Hereinafter, embodiments of the present invention will be described based on the drawings.

  FIG. 1 is a plan view of a vehicle body frame structure according to an embodiment of the present invention. The direction indicated by the arrow FR in the figure is the front of the vehicle. A pair of left and right side frames 1 extend in the vehicle longitudinal direction on both sides in the vehicle width direction corresponding to the vertical direction in FIG.

  Vehicle forward side end portions of the pair of left and right side frames 1 are connected by a bumper reinforcement 3 extending in the vehicle width direction. Further, the vehicle rear sides of the bumper reinforcement 3 are connected to each other by the cross frames 5, 7 and 9 in the left and right side frames 1. The side frames 1 and the cross frames 5, 7, 9 and the like constitute a vehicle body frame member.

  Near the connection portion between the two cross frames 5 and 7 on the front side of the vehicle and the side frame 1, two base end portions on the inner side in the vehicle width direction of the suspension arm 11 as a suspension member are connected. The tip end of the suspension arm 11 on the outer side in the vehicle width direction is connected to the front wheel 13 via a knuckle arm or the like (not shown).

  Therefore, the left and right front wheels 13 which are wheels are located on the outer side in the vehicle width direction of the side frame 1 and attached to the vehicle body frame members such as the side frame 1 and the cross frames 5 and 7 via the suspension arm 11. A strut tower 14 is attached to the side frame 1 between the cross frames 5 and 7 so as to protrude toward the front wheel 13 side.

  The pair of left and right side frames 1 is bent outward in the vehicle width direction in the vicinity of the cross frame 7 located behind the cross frame 5. Therefore, the pair of left and right side frames 1 has a front portion 1a in which the distance in the vehicle width direction is narrow, and a rear portion 1b in which the distance in the vehicle width direction is wide. And an inclined portion 1c.

  The cross frame 5 in front of the vehicle is located approximately at the center in the vehicle longitudinal direction of the front portion 1a, and the cross frame 7 at the center is located near the rear end in the vehicle longitudinal direction of the front portion 1a. The cross frame 9 at the rear of the vehicle is located near the front end of the rear portion 1 b in the vehicle longitudinal direction. The cross frame 9 at the rear of the vehicle and the approximate center of the inclined portion 1 c in the vehicle longitudinal direction are connected to each other by a reinforcing member 15.

  A stopper member 17 as a wheel movement suppressing member is attached to the outer side in the vehicle width direction of the inclined portion 1 c of the side frame 1. The stopper member 17 receives an impact load from the front of the vehicle and contacts and receives the front wheel 13 when the front wheel 13 moves to the rear of the vehicle, thereby suppressing the movement of the front wheel 13 to the rear of the vehicle. That is, the stopper member 17 is located rearward of the front wheel 13 in the vehicle, and is attached to the vehicle body frame member at the center of the front wheel 13 in the vehicle longitudinal direction.

  The stopper member 17 is located in the vicinity of the vehicle rear side end of the inclined portion 1c, and is between the rear connecting portion 9a of the cross frame 9 to the side frame 1 and the front connecting portion 15a of the reinforcing member 15 to the side frame 1. It is located in the vicinity of the front connecting portion 15a. A bracket 18 for fixing an upper portion having a vehicle compartment and the like to the side frame 1 is provided on the outer side in the vehicle width direction of the side frame 1 between the stopper member 17 and the rear connecting portion 9a.

  In the side frame 1, a fuel pipe 19 as a vehicle component is attached on the front side of the vehicle from near the inclined portion 1 c to which the stopper member 17 is attached. The fuel pipe 19 has a portion projecting outward in the vehicle width direction of the side frame 1. Further, the fuel pipe 19 has a portion installed on the front wheel 13 side with respect to the stopper member 17 outside the side frame 1 in the vehicle width direction. A portion of the fuel pipe 19 of the portion of the side frame 1 that protrudes outward in the vehicle width direction is located between the side frame 1 and the stopper member 17 at a portion on the vehicle rear side. The fuel pipe 19 is omitted in FIGS. 3, 5 and 6.

  The stopper member 17 is, as shown enlarged in FIG. 2, fastened and fixed to the main body 21 welded and fixed to the side frame 1 and a bolt 23 as a fastening member at the end on the vehicle front side of the main body 21. And a load receiving unit 25.

  As shown in FIG. 2, the main body portion 21 is a hollow base member 21a having a substantially triangular shape in a plan view, and an end plate 21b integrated by welding to an end of the base member 21a on the vehicle front side Have. The base member 21 a forms a closed cross section with the side frame 1 in a state in which the inner side in the vehicle width direction is welded and fixed to the side frame 1. The end plate 21 b closes an opening on the vehicle front side of the base member 21 a.

  As shown in FIG. 4, in the base member 21a, the outer portion in the vehicle width direction opposite to the side to be joined to the side frame 1 has a large bulging portion 21a1 which bulges upward as a whole. . The end plate 21b is provided with a projecting portion 21b1 protruding upward in the vehicle width direction so as to correspond to the shape of the bulging portion 21a1 of the base member 21a, and the length in the vertical direction is greater than the inside in the vehicle width direction It is getting longer.

  The end plate 21b has bent portions 21b2 and 21b3 in which the upper end edge on the side of the side frame 1 inward in the vehicle width direction than the protrusion 21b1 and the end edge inward of the protrusion 21b1 in the vehicle width direction bend toward the vehicle rear side. Each has its own.

  As shown in FIGS. 2 and 4, the load receiving portion 25 of the stopper member 17 includes a frame 27 fixed to the end plate 21 b of the main body 21, a reinforcement 29 accommodated in the frame 27, and a frame 27. An end plate 21 b and a plate 31 fixed to the front side of the vehicle opposite to the end plate 21 b are provided.

  As shown in FIG. 4, the frame 27 includes a rear surface 27a in contact with the end plate 21b, a front surface 27b in contact with the plate 31, and a side surface 27c connecting the rear surface 27a and the front surface 27b at the inner side in the vehicle width direction. . Thus, the frame 27 is open at both the upper and lower sides and the outer side in the vehicle width direction. The rear surface 27a and the front surface 27b are respectively provided with inclined portions 27a1 and 27b1 which are inclined such that the upper part is on the inner side in the vehicle width direction than the lower part with respect to the end edge part on the vehicle width direction outer side.

  The reinforcement 29 includes an upper surface 29a, a lower surface 29b, and a slope 29c connecting end portions of the upper surface 29a and the lower surface 29b outside in the vehicle width direction. The reinforcement 29 is accommodated between the rear surface 27a and the front surface 27b in the frame 27, thereby closing both the upper and lower portions of the frame 27 and the open portion on the outer side in the vehicle width direction as shown in FIGS. With the reinforcement 29 housed in the frame 27, the upper surface 29a, the lower surface 29b, and the sloped portion 29c are positioned inside the outer peripheral edge of the rear surface 27a and the front surface 27b of the frame 27.

  The load receiving portion 25 provided with the frame 27, the reinforcement 29 and the plate 31 is fastened and fixed to the main body portion 21 by three bolts 23 as shown in FIG. 3. At this time, two spacers 33 and 35 are interposed between the rear surface 27 a and the front surface 27 b of the frame 27. The spacer 33 has cylindrical portions 33a and 33b at upper and lower end portions, respectively, and the cylindrical portions 33a and 33b are integrally integrated with each other by the plate portion 33c. The spacer 35 is formed of a cylindrical member.

  Three bolt insertion holes 27 ah and 27 b h are respectively formed at positions corresponding to the accommodated spacers 33 and 35 on the rear surface 27 a and the front surface 27 b of the frame 27. Furthermore, three bolt insertion holes 21bh and 31h are respectively formed in the end plate 21b and the plate 31 of the main body 21 corresponding to the bolt insertion holes 27ah and 27bh.

  Further, as shown in FIG. 7, a nut 37 is fixed by welding on the side of the base member 21a at a position corresponding to the bolt insertion hole 21bh of the end plate 21b. Therefore, the load receiving portion 25 is inserted by inserting the bolt 23 into the bolt insertion holes 31h, 27bh, 27ah, 21bh of the plate 31, the frame 27, the end plate 21b and the spacers 33, 35 and fastening them to the nut 37. Is fastened and fixed to the main body 21.

  The plate 31 has a flat plate-like surface portion 31a in contact with the front surface 27b of the frame 27, and a flange portion bent at an angle of approximately 90 degrees toward the front wheel 13 side in front of the vehicle from the inner edge of the surface portion 31a in the vehicle width direction. It has 31b. The flange portion 31b is extended so as to protrude toward the front wheel 13 from the inner side in the vehicle width direction of the surface portion 31a of the plate 31, and the wheel inner side movement suppressing portion that suppresses the movement of the front wheel 13 in the vehicle width direction Configure. The surface on the front wheel 13 side of the surface portion 31a constitutes a contact portion that comes in contact when the front wheel 13 moves rearward of the vehicle.

  As shown in FIG. 2, the position A of the end 31b1 of the flange portion 31b on the front wheel 13 side is closer to the front wheel 13 than the position B of the end 23a of the three bolts 23 on the front wheel 13 side (in FIG. Located on the left). In other words, the end 31 b 1 of the flange 31 b is located forward of the end 23 a of the bolt 23 in the vehicle. Position A and position B are positions in the vehicle longitudinal direction.

  Next, the operation will be described.

  As shown in FIG. 8, it is assumed that the vehicle collides with an obstacle 39 from the front of the side frame 1 on the left side in the vehicle width direction and receives an impact load. In this case, as the side frame 1 on the left side in the vehicle width direction is crushed and deformed, the corresponding left front wheel 13 moves to the rear of the vehicle.

  The front wheel 13 moving to the rear of the vehicle comes in contact with the stopper member 17 and the movement to the rear is suppressed. Thereby, the vehicle body frame member such as the side frame 1 is restrained from being deformed due to the movement of the front wheel 13 and the movement to the passenger compartment side due to the deformation.

  At this time, when the front wheel 13 in contact with the stopper member 17 moves inward in the vehicle width direction as shown in FIG. 9, the front wheel 13 contacts the flange portion 31b of the plate 31 and the vehicle width direction inside Movement is suppressed. Thereby, the contact of the front wheel 13 with the fuel pipe 19 is suppressed, and the breakage of the fuel pipe 19 can be suppressed. As a case where the front wheel 13 moves inward in the vehicle width direction, it is conceivable that the tire of the front wheel 13 slips on the surface of the head of the bolt 23.

  In the present embodiment, the position A of the end 31 b 1 of the flange 31 b on the front wheel 13 side is located closer to the front wheel 13 than the position B of the ends 23 a of the three bolts 23 on the front wheel 13 side. For this reason, when the front wheel 13 moves rearward of the vehicle and contacts the stopper member 17, the front wheel 13 is moved by the flange portion 31b even if the head of the bolt 23 slides on the inside in the vehicle width direction. Movement in the width direction inward is suppressed. Thereby, the contact of the front wheel 13 with the fuel pipe 19 can be suppressed.

  In the present embodiment, the wheel inner side movement suppressing portion is constituted by a flange portion 31 b which is formed by being bent from the surface portion 31 a of the plate 31 of the load receiving portion 25 toward the front wheel 13 and integrated with the plate 31. As a result, it is not necessary to separately provide a dedicated member as the wheel inner side movement suppressing portion, and a reduction in the number of parts can be obtained.

  As mentioned above, although embodiment of this invention was described, these embodiments are only the examples described in order to make an understanding of this invention easy, and this invention is not limited to the said embodiment. The technical scope of the present invention is not limited to the specific technical matters disclosed in the above-described embodiments, but includes various modifications, alterations, and alternative technologies that can be easily derived therefrom.

  For example, in the embodiment described above, the front wheel 13 on the left side of the vehicle has been described as being moved backward, but even if the front wheel 13 on the right side of the vehicle is moved backward, similar effects can be obtained by the stopper member 17 on the right side of the vehicle Is obtained. In this case, vehicle components such as the fuel pipe 19 are attached to the side frame 1 on the right side of the vehicle, as in the left side of the vehicle.

  As a vehicle component attached to the side frame 1, it is not limited to the fuel pipe 19 as long as it is a easily damaged component which is easily damaged by contact with the front wheel 13.

  In the embodiment described above, the stopper member 17 separates the main body portion 21 and the load receiving portion 25 in consideration of the layout of the fuel pipe 19. However, if there is no problem in the layout of the fuel pipe 19, the portion constituting the main body portion 21 and the portion constituting the load receiving portion 25 may be integrated.

  Moreover, although this invention is applied to the vehicle front part in embodiment mentioned above, you may apply this invention to a vehicle rear part. When the present invention is applied to the rear of the vehicle, when the vehicle receives an impact load from the rear, the rear wheel moves to the center in the vehicle longitudinal direction in front of the vehicle, and the side frame in front of the vehicle Contact with the stopper member attached to the rear wheel, and the forward movement of the rear wheel is suppressed. At that time, the rear wheel is restrained from moving inward in the vehicle width direction by the flange portion of the stopper member.

1 Side frame (body frame member)
11 Suspension arm (suspension member)
13 front wheel (wheel)
17 Stopper member (wheel movement suppression member)
21 stopper main body 23 bolt (fastening member)
23a Bolt front end side 25 Load receiving portion of stopper member 31a Surface (contact portion)
31b Flange part (wheel inside movement suppression part)
31b1 Front end of flange

Claims (3)

A vehicle body frame member extending in the longitudinal direction of the vehicle at a lateral side of the vehicle;
A wheel located outside the vehicle body frame member in the vehicle width direction and attached to the vehicle body frame member via a suspension member;
It is provided on the vehicle width direction outer side of the vehicle body frame member at the center side in the vehicle longitudinal direction than the wheels, and includes a contact portion that contacts when the wheel moves in the vehicle longitudinal direction to suppress movement in the vehicle longitudinal direction A wheel movement suppressing member,
Wherein in the wheel side of the wheel movement restraining member includes a vehicle component fit these, the outside in the vehicle width direction of the vehicle body frame member,
The wheel movement suppressing member is
It is extended from the inner side in the vehicle width direction of the contact portion toward the wheel side, and is located on the opposite side of the vehicle body frame member with the vehicle parts in between, and the movement of the wheel in the vehicle width direction inward A vehicle body frame structure comprising a wheel inner side movement suppressing portion for suppressing. The wheel movement suppressing member is
A main body attached to the vehicle body frame member;
The contact portion and the wheel inside movement suppressing portion are fastened and fixed to the wheel side of the main body portion by a fastening member, and the contact portion is provided with a load when the wheel moves in the longitudinal direction of the vehicle. And a load receiving portion received through the
The vehicle-body-frame structure according to claim 1, wherein the wheel-side end of the wheel-inward movement restraining portion is positioned closer to the wheel than the wheel-side end of the fastening member.   The vehicle-body-frame structure according to claim 2, wherein the wheel-inward movement suppressing portion is configured by a flange portion which is formed by bending from the contact portion toward the wheel side.

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