JP2005153697A - Body structure of vehicle with frame - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the shock load applied on bolts of a body mount. <P>SOLUTION: When the load is applied toward the vehicle rear side from the front end 12C of a side rail 12 at the time of front collision, a frame side bracket 24 disposed in the vehicle width direction inside part in a bent part 22 of the side rail 12 moves to the acting direction of the load, namely, to the vehicle rear, disposed at the position on the approximately same straight line in the frame side bracket 24 and vehicle longitudinal direction, and abuts to the body side under reinforcement longitudinal cross 20 fixed to the body side to transmit a part of the shock load. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vehicle body structure of a vehicle with a frame, and more particularly to a vehicle body structure of a vehicle with a frame in an automobile in which a body is coupled to a chassis frame via bolts of a body mount.

Conventionally, in a vehicle body structure of a vehicle with a frame, a stopper bracket having a hole (or a recess) into which a lower end of a bolt of a body mount is inserted is fixed to a chassis frame of the vehicle body, and the lower end of the bolt is fixed at this hole. A structure is known in which the movement of the part is restricted, the relative movement between the chassis frame and the body is kept small, and the lower end of the bolt means and the hole of the stopper bracket are free in the vertical direction (for example, patents) Reference 1).
JP-A-6-99849

  However, in Patent Document 1, the chassis frame and the body are coupled only by the bolts of the body mount. As a result, at the time of a vehicle body collision, a large collision load acts on the bolt in the shearing direction and the tensile direction. For this reason, it is necessary to increase the size of the bolt in order to increase the coupling strength and the coupling rigidity between the chassis frame and the body against the collision load.

  An object of the present invention is to obtain the vehicle body structure of a vehicle with a frame that can reduce the collision load acting on the bolt of the body mount in consideration of the above facts.

The present invention according to claim 1 is a vehicle body structure of a vehicle with a frame in which a body is coupled to a plurality of locations of a chassis frame via bolts of a body mount.
In addition to the bolts of the body mount, there is provided a collision load transmission means for transmitting a load between the chassis frame and the body when a vehicle body collides.

  Therefore, when the vehicle body collides, a part of the collision load is transmitted between the chassis frame and the body via the collision load transmission means. As a result, the collision load acting on the body mount bolt can be reduced.

  According to a second aspect of the present invention, in the vehicle body structure of the vehicle with a frame according to the first aspect, the collision load transmitting means includes a bracket provided on the chassis frame, and a reinforcement of the body that comes into contact with the bracket at the time of the collision. It is characterized by these.

  Therefore, in addition to the contents of claim 1, when the vehicle body collides, the bracket provided on the chassis frame and the reinforcement of the body come into contact with each other, so that the collision load is surely ensured through the bracket and the reinforcement. Can communicate to.

  According to a third aspect of the present invention, in the vehicle body structure of the vehicle with a frame according to the first aspect, the collision load transmitting means is in contact with the portion of the chassis frame that bends during a collision and the portion that is bent during the collision. Body reinforcement.

  Therefore, in addition to the contents of claim 1, since the collision load transmitting means is a portion of the chassis frame that bends at the time of collision and the body reinforcement that comes into contact with the bracket at the time of collision, a separate member is disposed on the chassis frame. There is no need. As a result, the component arrangement space near the chassis frame is increased.

  According to the first aspect of the present invention, in a vehicle body structure of a vehicle with a frame in which the body is coupled to a plurality of locations of the chassis frame via bolts of the body mount, the chassis frame is separated when the vehicle body collides separately from the bolts of the body mount. Since there is a collision load transmission means for transmitting the load between the body and the body, the collision load acting on the bolt of the body mount can be reduced.

  According to a second aspect of the present invention, in the vehicle body structure of the vehicle with a frame according to the first aspect, the collision load transmitting means is a bracket provided on the chassis frame and a reinforcement of the body that comes into contact with the bracket at the time of the collision. Therefore, in addition to the effect of the first aspect, it has an excellent effect that the collision load can be reliably transmitted.

  According to a third aspect of the present invention, in the vehicle body structure of the vehicle with a frame according to the first aspect, the collision load transmitting means includes a portion of the chassis frame that bends at the time of collision and a body reinforcement that contacts the portion that is bent at the time of collision. Therefore, in addition to the effect of the first aspect, there is an excellent effect that the component arrangement space in the vicinity of the chassis frame is widened.

  An embodiment of a vehicle body structure of a vehicle with a frame according to the present invention will be described with reference to FIGS.

  In the figure, the arrow UP indicates the vehicle body upward direction, the arrow FR in the figure indicates the vehicle body front direction, and the arrow IN in the figure indicates the vehicle width inside direction.

  As shown in FIG. 1, a vehicle body 10 of the present embodiment includes a chassis frame 16 having a pair of left and right side rails 12 and a plurality of cross members 14 installed at predetermined positions in the vehicle front-rear direction. A body (not shown) is coupled to a plurality of locations on the chassis frame 16 via a well-known body mount 18 having bolts 17.

  Further, on the body side of the vehicle body 10, a pair of left and right body-side underforce cloths 20 which are reinforcements as body-side collision load transmission means are disposed along the vehicle longitudinal direction.

  On the other hand, at the boundary between the front portion 12A of the side rail 12 and the center portion 12B in the front-rear direction of the side rail 12, a side from the front end side in the longitudinal direction of the side rail 12, that is, the front end 12C side of the side rail 12 in this embodiment. A bent portion 22 (also referred to as a kick portion) that is bent outward in the vehicle width direction toward the longitudinal center portion 12B side of the rail 12 is formed.

  Further, a frame side bracket 24 which is a bracket as a collision load transmitting means on the chassis frame side is disposed on the inner side in the vehicle width direction of the bent portion 22, and the frame side bracket 24 is a side rail in a plan view. The 12 front portions 12 </ b> A are disposed at the bent portions 22 on the substantially extended lines.

  As shown in FIG. 2, the bent portion 22 of the side rail 12 is bent downward from the front end 12C side of the side rail 12 toward the longitudinal center portion 12B side of the side rail 12, and the frame side bracket 24 is In the side view, the side rail 12 is disposed at a portion of the bent portion 22 that is substantially on the extension line of the front portion 12A.

  As shown in FIG. 3, the frame side bracket 24 has a trapezoidal shape in plan view, and the vehicle width direction inner side wall portion 24 </ b> A extends linearly in the vehicle front-rear direction. Further, the outer edge in the vehicle width direction of the upper wall portion 24B of the frame side bracket 24 is a flange 24C, and the flange 24C is welded to the upper wall portion 12D of the side rail 12.

  The rear wall portion 24D of the frame side bracket 24 extends linearly in the vehicle width direction. Further, an outer edge in the vehicle width direction of the rear wall portion 24D of the frame side bracket 24 is bent obliquely rearward and outward toward the vehicle to form a flange 24E. The flange 24E is welded to the inner wall portion 12E in the vehicle width direction of the side rail 12. Has been.

  The front wall portion 24F of the frame side bracket 24 extends linearly in the vehicle width direction. Further, the outer edge in the vehicle width direction of the front wall portion 24F of the frame side bracket 24 is bent toward the vehicle front side to form a flange 24G, and the flange 24G is welded to the inner wall portion 12E in the vehicle width direction of the side rail 12. Has been.

  As shown in FIG. 5, the outer edge in the vehicle width direction of the lower wall portion 24H of the frame side bracket 24 is bent downward in the vehicle to form a flange 24J, and the flange 24J is the inner wall portion in the vehicle width direction of the side rail 12. It is welded to 12E.

  As shown in FIG. 4, the body-side under-inforate cloth 20 has a cross-sectional shape viewed from the vehicle front-rear direction as a hat shape with the opening facing upward, and a flange 20A formed at the opening end, 20B is welded to the lower surface of the floor panel on the body side (not shown). Accordingly, the body-side under information cloth 20 forms a closed cross-sectional structure extending in the vehicle front-rear direction with the body-side floor panel (not shown).

  As shown in FIG. 3, a contact panel 26 is disposed at the front end portion of the body-side under information cloth 20, and the contact panel 26 has a U shape in plan view. The base portion 26A of the contact panel 26 and the rear wall portion 24D of the frame side bracket 24 are arranged in parallel to each other along the vehicle width direction. In other words, the body-side under information cloth 20 is positioned at the center side (rear side) in the longitudinal direction of the side rail 12 with respect to the frame-side bracket 24 and substantially in the same straight line as the frame-side bracket 24 in the vehicle front-rear direction. The gap 28 having a predetermined length L is disposed between the rear wall portion 24D of the frame side bracket 24 and the base portion 26A of the contact panel 26. Is formed.

  As shown in FIG. 5, a flange 26 </ b> B is formed at the vehicle width direction outer side end portion of the base portion 26 </ b> A of the contact panel 26 toward the rear of the vehicle, and this flange 26 </ b> B is formed on the body-side under information structure 20. It is welded to the vehicle width direction outer side surface of the vehicle width direction outer front end portion 20C. Further, a flange 26C is formed toward the vehicle rear side at the vehicle width direction inner side end of the base portion 26A of the contact panel 26, and this flange 26C is the front end in the vehicle width direction of the body-side under force info cloth 20. The portion 20D is welded to the inner side surface in the vehicle width direction.

  Next, the operation of this embodiment will be described.

  In the present embodiment, when a collision load acts from the front end 12C of the side rail 12 toward the vehicle rear side at the time of the front collision, the frame side disposed on the inner side in the vehicle width direction in the bent portion 22 of the side rail 12 The body side under-inforate cloth 20 fixed to the body side is disposed at a position where the bracket 24 moves in the direction of the load, that is, rearward of the vehicle and is substantially collinear with the frame side bracket 24 in the vehicle front-rear direction. Abuts and transmits the collision load.

  As a result, when the vehicle body 10 collides forward, a part of the collision load is transmitted from the chassis frame 16 to the body via the frame side bracket 24 and the body side under force info cloth 20. As a result, a collision load acting on the bolt 17 of the body mount 18 can be reduced. For this reason, it is not necessary to increase the size of the bolt 17 of the body mount 18, and an increase in mass and cost accompanying an increase in the size of the bolt 17 of the body mount 18 can be prevented.

  In the present embodiment, the collision load transmission means includes a frame-side bracket 24 provided on the chassis frame 16 and a body-side under-inforate cloth 20 that contacts the frame-side bracket 24 at the time of collision. As a result, the frame-side bracket 24 reliably abuts against the body-side under information cloth 20 at the time of a front collision. For this reason, the collision load can be reliably transmitted via the frame side bracket 24 and the body side under-inforate cloth 20.

  Further, in the present embodiment, a gap 28 having a predetermined length L is formed between the base portion 26A of the contact panel 26 that constitutes the front end portion of the body-side under information cloth 20 and the rear wall portion 24D of the frame-side bracket 24. Therefore, when the vehicle normally travels, it is possible to prevent the frame side bracket 24 and the contact panel 26 of the body side under information cloth 20 from interfering with each other due to the relative movement between the chassis frame 16 and the body. .

  Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to the above-described embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, the frame side bracket 24 is not provided, and the bent portion 22 of the side rail 12 bends from the position of the solid line toward the vehicle width direction outside (in the direction of arrow A in FIG. 6) at the time of the front collision as shown in FIG. The chassis frame-side collision load transmission means may be configured such that the body-side under-inforate cloth 20 abuts on the bent bent portion 22 indicated by the two-dot chain line as indicated by the two-dot chain line. In this case, it is not necessary to dispose another member such as a bracket on the chassis frame 16, so that a component disposition space near the chassis frame 16 is widened.

  Moreover, in the said embodiment, although the side rail 12 and the frame side bracket 24 were used as a separate member, instead of this, for example, a part of the side rail 12 is bulged inward in the vehicle width direction, and the frame side bracket 24 is By forming, it is good also as a structure which made the side rail 12 and the frame side bracket 24 as a collision load transmission means integral structure.

  The vehicle body structure of a vehicle with a frame according to the present invention can also be applied to a vehicle with another frame different from the above embodiment, and the configuration and arrangement position of the collision load transmitting means are not limited to the above embodiment.

It is a schematic plan view which shows the vehicle body structure of the vehicle with a frame which concerns on one Embodiment of this invention. 1 is a schematic side view, partly in section, showing a vehicle body structure of a vehicle with a frame according to an embodiment of the present invention. It is an enlarged plan view showing a main part of a vehicle body structure of a vehicle with a frame according to an embodiment of the present invention. FIG. 6 is a perspective view showing the main part of the vehicle body structure of a vehicle with a frame according to an embodiment of the present invention as seen from the obliquely rearward inner side of the vehicle. It is the disassembled perspective view seen from the vehicle diagonally back inner side which shows the principal part of the vehicle body structure of the vehicle with a frame which concerns on one Embodiment of this invention. It is an enlarged plan view which shows the principal part of the vehicle body structure of the vehicle with a frame which concerns on other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Car body 12 Side rail 14 Cross member 16 Chassis frame 20 Body side under force info cross (impact load transmission means)
22 Bending part of side rail (impact load transmission means)
24 Frame side bracket (impact load transmission means)

Claims (3)

In the vehicle body structure of a vehicle with a frame in which the body is coupled to a plurality of locations on the chassis frame via body mount bolts,
A vehicle body structure for a vehicle with a frame, comprising: a collision load transmission means for transmitting a load between the chassis frame and the body when the vehicle body collides separately from the bolt of the body mount.   2. The vehicle body structure of a vehicle with a frame according to claim 1, wherein the collision load transmitting means is a bracket provided on the chassis frame and a reinforcement of the body that comes into contact with the bracket at the time of a collision.   2. The vehicle with a frame according to claim 1, wherein the collision load transmitting means includes a portion of the chassis frame that is bent at the time of a collision and a reinforcement of the body that is in contact with the bent portion at the time of a collision. Car body structure.

Images