JP7108971B2 - Gusset - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to a gusset that joins an end portion of a cross member in the vehicle width direction and a side member.

Patent Document 1 describes a vehicle body frame including left and right side members, a cross member, and a gusset. The left and right side members are spaced apart in the vehicle width direction and extend in the front-rear direction, and the cross member extends linearly in the vehicle width direction between the left and right side members. Each side member has a U-shaped cross section that opens inward in the vehicle width direction, and includes a vertical plate portion that stands substantially vertically and extends in the front-rear direction, and a vertical plate portion that is bent inward in the vehicle width direction from the upper end edge and the lower end edge of the vertical plate portion. It integrally has an upper plate portion and a lower plate portion facing each other. The cross member has a U-shaped cross section that opens rearward, and includes a vertical wall portion that stands substantially vertically and extends in the vehicle width direction, and an upper end portion that is bent rearward from an upper end edge and a lower end edge of the vertical wall portion to face each other. It integrally has a wall portion and a lower wall portion.

Two upper and lower gussets (a total of four left and right gussets) are fixed to the left and right ends of the cross member. Each gusset includes: a gusset upper surface portion coupled in surface contact with the upper surface of the upper wall portion of the cross member or the lower surface of the lower wall portion; It integrally has a side part. In the gusset mounted state in which the gusset top surface is joined to the cross member, the gusset side surface protrudes outward in the vehicle width direction from the tip of the cross member in the vehicle width direction, and extends between the upper plate portion and the lower plate portion of the side member. is inserted from the inner side in the vehicle width direction into the vertical plate portion of the side member while being in surface contact with the inner surface of the vertical plate portion in the vehicle width direction.

JP 2016-159648 A

Since the vehicle body frame (side member) is required to have bending rigidity (vertical bending rigidity) against a load from above, it is preferable that the gusset sufficiently contributes to increase the vertical bending rigidity of the vehicle body frame. 1 is not intended to increase the vertical bending rigidity of the body frame.

Accordingly, an object of the present disclosure is to provide a gusset capable of enhancing the effect of increasing the vertical bending rigidity of a vehicle body frame.

In order to achieve the above object, in a first aspect of the present invention, left and right side members extend in the front-rear direction on both sides in the vehicle width direction, cross members extend in the vehicle width direction between the left and right side members, and the left and right side members extend in the vehicle width direction. Each of the side members has a vertical plate portion that stands substantially vertically and extends in the front-rear direction, and upper and lower horizontal plate portions that extend inward in the vehicle width direction from upper and lower edges of the vertical plate portion and face each other. In the frame, a gusset connecting an end portion of the cross member in the vehicle width direction and the side member includes a gusset vertical plate portion, a gusset first horizontal plate portion, and a gusset second horizontal plate portion.

The vertical gusset plate portion is fixed to the vertical plate portion of the side member while being overlapped from the inner side in the vehicle width direction. The first horizontal gusset plate portion extends inward in the vehicle width direction from the lower edge of the vertical gusset plate portion and is fixed to the upper surface of the end portion of the cross member while being superimposed thereon. It extends inwardly and is overlaid and fixed to the lower surface of the end of the cross member . The gusset second lateral plate portion extends inward in the vehicle width direction from the upper edge or the lower edge of the gusset vertical plate portion and faces the gusset first lateral plate portion.

The gusset second horizontal plate portion is fixed to the end portion of the cross member, and the gusset vertical plate portion is fixed to the vertical plate portion of the side member in the gusset assembled state. It extends from the upper edge and overlaps the lower surface of the upper horizontal plate portion of the side member in close proximity to or in contact with it , or extends from the lower edge of the gusset vertical plate portion and overlaps the upper surface of the lower horizontal plate portion of the side member. Overlap in close proximity or contact .

In the above configuration, when the gusset is assembled, the second gusset lateral plate portion faces and overlaps the lower surface of the upper lateral plate portion of the side member or the upper surface of the lower lateral plate portion of the side member in close proximity to or in contact with the side member. The plate thickness of the upper or lower lateral plate portion of the member is substantially increased by the gusset second lateral plate portion. For example, the gusset first horizontal plate portion extends inward in the vehicle width direction from the lower edge of the gusset vertical plate portion and is fixed to the upper surface of the end portion of the cross member, and the gusset second horizontal plate portion is the gusset vertical plate portion. When extending inward in the vehicle width direction from the upper end edge and overlapping the lower surface of the upper lateral plate portion of the side member, the plate thickness of the upper lateral plate portion of the side member is substantially increased by the second gusset lateral plate portion. On the other hand, the first horizontal gusset plate portion extends inward in the vehicle width direction from the upper edge of the vertical gusset plate portion and is fixed to the lower surface of the end portion of the cross member, and the second horizontal gusset plate portion is the vertical gusset plate portion. When extending inward in the vehicle width direction from the lower end edge and overlapping the upper surface of the lower lateral plate portion of the side member, the plate thickness of the lower lateral plate portion of the side member is substantially increased by the second gusset lateral plate portion. . In this way, in the composite body in which the second gusset horizontal plate portion is added to the side member, the thickness of the side plate portion of the side member is substantially increased, and the section modulus of the composite body in the vertical bending direction is greater than that of the side member alone. do. Therefore, the vertical bending stiffness of the body frame can be increased by the gusset.

When the gusset second lateral plate portion with the gusset assembled is superposed on the lower surface of the upper lateral plate portion of the side member or the upper surface of the lower lateral plate portion of the side member in surface contact, the lateral plate of the side member The vertical bending rigidity of the vehicle body frame can be further increased by the frictional resistance between the portion and the second gusset lateral plate portion.

A second aspect of the present invention is the gusset of the first aspect, wherein the gusset second lateral plate portion includes a front extension region extending forward from the front end of the gusset first lateral plate portion and a gusset first lateral plate portion. It has at least one extension region of the rear extension region that extends rearward from the rear end of the plate portion.

In the above configuration, the thickness of the lateral plate portion of the side member is substantially increased by the gusset second lateral plate portion even in the extension region, so the vertical bending rigidity of the vehicle body frame can be further increased by the gusset.

In a third aspect of the present invention, the left and right side members extend in the front-rear direction on both sides in the vehicle width direction, and the front and rear cross members are spaced in the front-rear direction between the left and right side members and aligned in the vehicle width direction. Each of the left and right side members extends substantially vertically and extends in the front-rear direction, and upper and lower horizontal plate portions extend inward in the vehicle width direction from the upper and lower edges of the vertical plate portions and face each other. A gusset for joining the vehicle width direction ends of the front and rear cross members and the side member, the gusset front vertical plate portion, the gusset rear vertical plate portion, and the gusset front first lateral plate portion. A plate portion, a gusset rear first lateral plate portion, and a gusset second lateral plate portion are provided.

The gusset front vertical plate portion is fixed to the vertical plate portion of the side member by being overlapped from the inside in the vehicle width direction. The gusset rear vertical plate portion is fixed behind the gusset front vertical plate portion by overlapping with the vertical plate portion of the side member from the vehicle width direction inner side. The gusset front first lateral plate portion extends inward in the vehicle width direction from the lower edge or the upper edge of the gusset front vertical plate portion, and is fixed to the upper or lower surface of the end portion of the front cross member. The gusset rear first lateral plate portion extends inward in the vehicle width direction from the lower edge or the upper edge of the gusset rear vertical plate portion, and is fixed by being superimposed on the upper or lower surface of the rear cross member end portion.

The gusset second lateral plate portion integrally includes a gusset front second lateral plate portion and a gusset rear second lateral plate portion. The gusset front second horizontal plate portion extends inward in the vehicle width direction from the upper edge or the lower edge of the gusset front vertical plate portion to face the gusset front first horizontal plate portion. The gusset rear second horizontal plate portion extends inward in the vehicle width direction from the upper edge or the lower edge of the gusset rear vertical plate portion and faces the gusset rear first horizontal plate portion.

In the gusset second horizontal plate portion, the gusset front first horizontal plate portion and the gusset rear first horizontal plate portion are fixed to the ends of the cross member, and the gusset front vertical plate portion and the gusset rear vertical plate portion are fixed to the side members. In the gusset-mounted state fixed to the vertical plate portion, it overlaps in proximity to or in contact with the lower surface of the upper horizontal plate portion or the upper surface of the lower horizontal plate portion of the side member.

The gusset front first horizontal plate portion and the gusset rear first horizontal plate portion may be formed separately from each other, or may be integrally formed as the front region and the rear region of the gusset first horizontal plate portion.

In the above configuration, in the same manner as the gusset of the first aspect, the second lateral plate portion of the gusset comes close to or contacts the lower surface of the upper lateral plate portion or the upper surface of the lower lateral plate portion of the side member when the gusset is assembled. In the composite body in which the side member is overlapped with the gusset second horizontal plate part, the thickness of the side member side plate part is substantially increased, so the section modulus in the vertical bending direction of the composite body is the side member alone. increases more than Therefore, the vertical bending stiffness of the body frame can be increased by the gusset.

In addition, between the front and rear cross members, the thickness of the lateral plate portion of the side member is substantially increased by the second gusset lateral plate portion over the entire front-rear direction. The increase effect can be enhanced.

As with the gusset of the first aspect, the gusset second horizontal plate portion with the gusset assembled is superimposed in surface contact with the lower surface of the upper horizontal plate portion of the side member or the upper surface of the lower horizontal plate portion. In this case, the vertical bending rigidity of the vehicle body frame can be further increased by the frictional resistance between the lateral plate portion of the side member and the second lateral plate portion of the gusset.

According to the present disclosure, the effect of increasing the vertical bending rigidity of the vehicle body frame by the gusset can be enhanced.

1 is a perspective view of a vehicle body frame according to a first embodiment of the invention; FIG. 2 is a perspective view of the front and rear lower gussets of FIG. 1; FIG. FIG. 2 is a cross-sectional view of a main part of the vehicle body frame of FIG. 1 taken along the vehicle width direction at an end in the vehicle width direction; FIG. 2 is an inner side view of the body frame of FIG. 1 as viewed from the inside in the vehicle width direction; FIG. 2 is a cross-sectional view of the body frame of FIG. 1 cut along the vehicle width direction; FIG. 5 is a perspective view of a vehicle body frame according to a second embodiment of the invention; Figure 7 is a perspective view of the lower gusset of Figure 6; FIG. 7 is an inner side view of the body frame of FIG. 6 viewed from the inside in the vehicle width direction; FIG. 5 is a cross-sectional view of a modification of the vehicle body frame cut along the vehicle width direction;

A first embodiment of the present invention will be described in detail below with reference to the drawings. Arrow FR in the drawing indicates the front of the vehicle, UP indicates the upper side, and IN indicates the inner side in the vehicle width direction. Further, in the following description, the front-rear direction means the front-rear direction of the vehicle, and the left-right direction means the left-right direction when the vehicle faces forward.

The vehicle of this embodiment is a truck or the like having a vehicle body frame 1 . As shown in FIG. 1, the vehicle body frame 1 includes a pair of left and right side members 2 and a plurality of cross members including front and rear cross members 3 (3F, 3B) (front and rear cross members of the front cross member 3F). Other cross members arranged behind the member 3B are not shown), left and right upper gussets 5 and lower gussets (gussets) 6, 7 for connecting the left and right ends of each cross member 3 to the side members 2. , and is configured in a ladder shape by left and right side members 2 and a plurality of cross members 3 .

The left and right side members 2 are spaced apart from each other on both sides in the vehicle width direction and extend in the front-rear direction. Each side member 2 has a U-shaped cross section that opens inward in the vehicle width direction, and includes vertical plate portions 11 that stand substantially vertically and extend in the front-rear direction. It integrally has an upper plate portion (upper horizontal plate portion) 12 and a lower plate portion (lower horizontal plate portion) 13 which bend and extend inward and face each other.

The front and rear cross members 3F and 3B are spaced in the front and rear direction between the left and right side members 2 and extend linearly in the vehicle width direction. Each cross member 3 has a U-shaped cross section that opens rearward, has a vertical wall portion 14 that stands substantially vertically and extends in the vehicle width direction, and bends rearward from the upper end edge and the lower end edge of the vertical wall portion 14, respectively. It integrally has an upper wall portion 15 and a lower wall portion 16 facing each other.

In the vehicle body frame 1, the left and right ends of the cross member 3 are not fixed to the upper plate portion 12 and the lower plate portion 13 of the side member 2, and the side member 2 is attached to the side member 2 via the upper gusset 5 and the lower gussets 6 and 7. It is a web fastening structural frame that is fastened and fixed to the vertical plate portion 11 .

As shown in FIG. 5, a propeller shaft 8 extends in the front-rear direction below the center of the vehicle body frame 1 in the vehicle width direction. In order to prevent interference between the propeller shaft 8 and the cross member 3, the height of the cross member 3 (distance between the upper surface of the upper wall portion 15 and the lower surface of the lower wall portion 16) should be the height of the side member 2 (upper plate 12 and the lower surface of the lower plate portion 13), and the cross member 3 is arranged at a height biased upward with respect to the side member 2, and the lower surface of the cross member 3 (lower wall The lower surface of the portion 16) is located above the lower surface of the side member 2 (the lower surface of the lower plate portion 13). The height of the left and right ends of the cross member 3 is shorter than the height of the concave portion of the side member 2 (the distance between the lower surface of the upper plate portion 12 and the upper surface of the lower plate portion 13). , the upper surface of the cross member 3 (the upper surface of the upper wall portion 15) is close to the lower surface of the upper plate portion 12 of the side member 2, and the lower surface of the cross member 3 (the lower surface of the lower wall portion 16) is below the side member 2. It is largely spaced upward from the upper surface of the plate portion 13 .

The left and right ends of the front cross member 3F are fixed to the left and right side members 2 via the upper gusset 5 and the front lower gusset 6, respectively. It is fixed above and below to the left and right side members 2 via the gusset 5 and the lower gusset 7 on the rear side.

As shown in FIGS. 1 and 3, the upper gusset 5 is an L-shaped gusset in which an upper gusset side plate portion 17 and an upper gusset upper plate portion 18 are integrally formed. The upper gusset side plate portion 17 is overlapped with the vertical plate portion 11 of the side member 2 from the inside in the vehicle width direction, is in surface contact with the vertical plate portion 11 , and is fastened and fixed to the vertical plate portion 11 by bolts 19 and nuts 20 . The upper gusset upper plate portion 18 is bent inward in the vehicle width direction from the upper edge of the upper gusset side plate portion 17 and extends inward in the vehicle width direction in close proximity to or in contact with the lower surface of the upper plate portion 12 of the side member 2 to extend inward in the vehicle width direction. 3 are overlapped on the upper surface of the upper wall portion 15 at the left and right ends thereof, and fixed to the upper wall portion 15 with screws 21 . The upper gusset upper plate portion 18 may be fastened and fixed to the upper wall portion 15 with bolts and nuts.

As shown in FIGS. 1 to 5, the front lower gusset 6 includes a lower gusset side plate portion (gusset vertical plate portion) 22, a lower gusset upper plate portion (gusset first horizontal plate portion) 23, and a lower gusset lower plate portion ( It is a U-shaped gusset integrally formed with the gusset second lateral plate portion 24 . The lower gusset side plate portion 22 is superimposed on the vertical plate portion 11 of the side member 2 from the inside in the vehicle width direction, is in surface contact with the vertical plate portion 11 , and is fastened and fixed to the vertical plate portion 11 by bolts 25 and nuts 26 . The lower gusset upper plate portion 23 bends and extends inward in the vehicle width direction from the upper edge of the lower gusset side plate portion 22, and overlaps the lower surface of the lower wall portion 16 at the left and right ends of the front cross member 3 to support the bolt. 27 and nuts 28 are fastened and fixed to the lower wall portion 16 . The lower gusset lower plate portion 24 extends from the lower edge of the lower gusset side plate portion 22 while bending inward in the vehicle width direction to face the lower gusset upper plate portion 23 . The lower gusset upper plate portion 23 may be fixed to the lower wall portion 16 with screws.

The lower gusset lower plate portion 24 is configured such that the lower gusset upper plate portion 23 is fixed to the end portion of the cross member 3 and the lower gusset side plate portion 22 is fixed to the vertical plate portion 11 of the side member 2 in a gusset assembled state. It overlaps with the upper surface of the lower plate portion 13 of the member 2 in proximity to or in contact with it.

Similar to the lower gusset 6 on the front side, the rear lower gusset 7 includes a lower gusset side plate portion (gusset vertical plate portion) 29, a lower gusset upper plate portion (gusset first horizontal plate portion) 30, and a lower gusset lower plate portion ( It is a U-shaped gusset integrally formed with the gusset second lateral plate portion 31 . The lower gusset side plate portion 29 is superimposed on the vertical plate portion 11 of the side member 2 from the inside in the vehicle width direction, is in surface contact with the vertical plate portion 11 , and is fastened and fixed to the vertical plate portion 11 by bolts 25 and nuts 26 . The lower gusset upper plate portion 30 bends and extends inward in the vehicle width direction from the upper edge of the lower gusset side plate portion 29, and overlaps the lower surface of the lower wall portion 16 at the left and right ends of the rear cross member 3B. It is fastened and fixed to the lower wall portion 16 by bolts 27 and nuts 28 . The lower gusset lower plate portion 31 extends from the lower edge of the lower gusset side plate portion 29 while bending inward in the vehicle width direction to face the lower gusset upper plate portion 30 . The lower gusset upper plate portion 30 may be fixed to the lower wall portion 16 with screws.

The lower gusset lower plate portion 31 is in a gusset assembled state in which the lower gusset upper plate portion 30 is fixed to the end portion of the cross member 3B and the lower gusset side plate portion 29 is fixed to the vertical plate portion 11 of the side member 2. It overlaps with the upper surface of the lower plate portion 13 of the member 2 in proximity to or in contact with it. Although the front lower gusset 6 is shown in FIG. 3, the rear lower gusset 7 has the same shape as in FIG.

The lower gusset side plate portion 22 and the lower gusset lower plate portion 24 of the lower gusset 6 on the front side have a front extension region 32 extending forward from the front end of the upper lower gusset plate portion 23 and a front extension region 32 extending from the rear end of the upper lower gusset plate portion 23 . It also integrally has a rear extension region 33 extending rearwardly. On the other hand, the lower gusset side plate portion 29 and the lower gusset lower plate portion 31 of the lower gusset 7 on the rear side have neither the front extension region nor the rear extension region. It is optional whether or not the front and rear lower gussets 6 and 7 are provided with a front extension area and whether or not a rear extension area is provided. It is also optional to include the lower gusset side walls 22, 29 in the extended region.

According to this embodiment, the upper gusset upper plate portion 18 is positioned above the side member 2 in the gusset assembled state in which the end portion of the cross member 3 is fixed to the side member 2 via the upper gusset 5 and the lower gussets 6 and 7 . The thickness of the upper plate portion 12 of the side member 2 is substantially increased by the upper gusset upper plate portion 18 so as to face and overlap the lower surface of the plate portion 12 in close proximity to or in contact with the lower surface of the plate portion 12 . The upper gusset side plate portion 17 and the lower gusset side plate portions 22 and 29 face and overlap the vertical plate portion 11 of the side member 2 while being in surface contact with each other. The gusset side plates 17 and the lower gusset side plates 22, 29 increase substantially.

Further, the lower gusset lower plate portions 24 and 31 of the front and rear cross members 3 face and overlap the upper surface of the lower plate portion 13 of the side member 2 while being close to or in contact with the upper surface of the lower plate portion 13 of the side member 2 . The thickness is substantially increased by the lower gusset lower plate portions 24,31.

In the composite body in which the upper gusset 5 and the lower gussets 6 and 7 are assembled to the side member 2 in this manner, the plate thicknesses of the vertical plate portion 11, the upper plate portion 12 and the lower plate portion 13 of the side member 2 are substantially increased. However, the section modulus of the composite in the vertical bending direction is greater than that of the single side member. Therefore, the vertical bending rigidity of the vehicle body frame 1 against the load of the vehicle can be increased by the upper gusset 5 and the lower gussets 6 and 7 .

In addition, in the front lower gusset 6 , the thickness of the lower plate portion 13 of the side member 2 is substantially increased by the lower gusset lower plate portion 24 in the front and rear extension regions 32 and 33 , so vertical bending of the vehicle body frame 1 is prevented. Stiffness can be further increased.

Note that when the lower gusset lower plate portions 24 and 31 in the gusset-assembled state overlap with the upper surface of the lower plate portion 13 of the side member 2 while being in surface contact with each other, the lower plate portion 13 of the side member 2 and the lower gusset lower plate may need to be overlapped. The vertical bending rigidity of the vehicle body frame 1 can be further increased by the frictional resistance between the portions 24 and 31 .

Similarly, when the upper gusset upper plate portion 18 in the gusset-assembled state overlaps with the lower surface of the upper plate portion 12 of the side member 2 in surface contact, the upper plate portion 12 of the side member 2 and the upper gusset upper plate portion overlap each other. 18, the vertical bending rigidity of the vehicle body frame 1 can be further increased.

Next, a second embodiment of the invention will be described with reference to FIGS. 6 to 8. FIG. This embodiment integrates the front and rear lower gussets 6 and 7 of the first embodiment on both the left and right sides, and the same reference numerals are assigned to the same configurations as in the first embodiment, and the description thereof will be omitted. do.

In the vehicle body frame 9 of the present embodiment, the lower gusset (gusset) 34 includes a front lower gusset side plate portion (gusset front vertical plate portion) 22 and a rear lower gusset side plate portion (gusset rear vertical plate portion) 29; A front lower gusset upper plate portion (gusset front first horizontal plate portion) 23, a rear lower gusset upper plate portion (gusset rear first horizontal plate portion) 30, and front and rear lower gusset lower plate portions 24, 31. , and the front and rear lower gusset upper plate portions 23 , 30 and the front and rear lower gusset lower plate portions 24 , 31 are continuous through a connecting region 35 . In other words, the rear extension region 33 of the front lower gusset 6 of the first embodiment is further extended to be continuous with the rear lower gusset 7 to form the connecting region 35, and the front and rear lower gusset side plate portions are formed. 22 and 29 are integrated via a connecting region 35 to form one lower gusset side plate portion 36, and the front and rear lower gusset lower plate portions 24 and 31 are integrated via a connecting region 35 to form one lower gusset lower plate portion ( Gusset second horizontal plate portion) 37 .

As in the case of the first embodiment, it is optional whether or not the lower gusset 34 is provided with the front extension region 32 and whether or not the rear extension region is provided. It is also optional whether the extended region 32 or the connecting region 35 includes the lower gusset side walls 22 and 29 .

According to this embodiment, between the front and rear cross members 3F, 3B, the plate thickness of the lower plate portion 13 of the side member 2 is increased by the connection region 35 of the lower gusset lower plate portions 24, 31 over the entire front-rear direction. Since the rigidity is substantially increased, the effect of increasing the vertical bending rigidity of the vehicle body frame 9 by the lower gusset 34 can be enhanced.

Although the present invention has been described above based on the above embodiments, the present invention is not limited to the contents of the above embodiments, and can be appropriately modified without departing from the scope of the present invention. In other words, all other embodiments, examples, operation techniques, etc. made by those skilled in the art based on this embodiment are naturally included in the scope of the present invention.

For example, in the above embodiment, the vehicle body frame 1 in which the cross member 3 is arranged at a height biased upward with respect to the side member 2 has been described, but the present invention is not limited to this. , the cross member 3 is also applicable to the vehicle body frame 10 arranged at a height biased downward with respect to the side member 2 . In this case, the upper gusset (gusset) 41 is composed of an upper gusset side plate portion (gusset vertical plate portion) 42 and an upper gusset lower plate portion (gusset first horizontal plate portion) like the lower gussets 6, 7 and 34 of the above embodiment. ) 43 and an upper gusset upper plate portion (gusset second horizontal plate portion) 44 are integrally formed to form a U-shaped gusset, and the upper gusset side plate portion 42 is overlapped with the vertical plate portion 11 of the side member 2 from the inside in the vehicle width direction. The upper gusset lower plate portion 43 is overlapped and fixed on the upper surface of the upper wall portion 15 at the left and right ends of the cross member 3, and the upper gusset upper plate portion 44 is fixed to the upper plate portion 12 of the side member 2. Lay close to or in contact with the bottom surface. Further, the lower gusset 45 is an L-shaped gusset in which the lower gusset side plate portion 46 and the lower gusset lower plate portion 47 are integrally formed like the upper gusset 5 of the above embodiment, and the lower gusset side plate portion 46 is a side member. The lower gusset lower plate portion 47 is overlapped and fixed to the lower surface of the lower wall portion 16 at the left and right ends of the cross member 3 . Since the plate thickness of the upper plate portion 12 of the side member 2 is substantially increased by the upper gusset upper plate portion 44, the vertical bending rigidity of the vehicle body frame 10 can be increased.

INDUSTRIAL APPLICABILITY The present invention can be applied to various vehicles as a gusset that couples the end portion of the cross member in the vehicle width direction and the side member.

1, 9, 10: body frame 2: side member 3: cross member 3F: front cross member 3B: rear cross member 5: upper gusset 6, 7, 34: lower gusset (gusset)
8: Propeller shaft 11: Vertical plate portion of side member 12: Upper plate portion of side member (upper horizontal plate portion)
13: Lower plate portion of side member (lower horizontal plate portion)
14: vertical wall portion of cross member 15: upper wall portion of cross member 16: lower wall portion of cross member 17: upper gusset side plate portion 18: upper gusset upper plate portion 19, 25, 27: bolts 20, 26, 28: Nut 21: Screws 22, 29, 36: Lower gusset side plate portion (vertical gusset plate portion)
23, 30: lower gusset upper plate portion (gusset first horizontal plate portion)
24, 31, 37: lower gusset lower plate portion (gusset second horizontal plate portion)
32, 33: Extension region 35: Connection region 41: Upper gusset (gusset)
42: Upper gusset side plate portion (vertical gusset plate portion)
43: Upper gusset lower plate portion (gusset first horizontal plate portion)
44: Upper gusset upper plate portion (gusset second horizontal plate portion)
45: Lower gusset 46: Lower gusset side plate portion 47: Lower gusset lower plate portion

Claims (3)

Left and right side members extend in the front-rear direction on both sides in the vehicle width direction, cross members extend in the vehicle width direction between the left and right side members, and each of the left and right side members stands substantially vertically and extends in the front-rear direction. and upper and lower horizontal plate portions extending inward in the vehicle width direction from the upper and lower edges of the vertical plate portion and facing each other, wherein the end portion of the cross member in the vehicle width direction and a gusset connecting the side member,
a gusset vertical plate portion superimposed on and fixed to the vertical plate portion of the side member from the inside in the vehicle width direction;
It extends inward in the vehicle width direction from the lower edge of the vertical gusset plate portion and is fixed to the upper surface of the end portion of the cross member by overlapping it , or extends inward in the vehicle width direction from the upper edge of the vertical gusset plate portion. , a gusset first lateral plate portion superimposed and fixed to the lower surface of the end portion of the cross member ;
a gusset second lateral plate portion extending inward in the vehicle width direction from the upper edge or the lower edge of the gusset vertical plate portion and facing the gusset first lateral plate portion;
The gusset second horizontal plate portion is in a gusset assembled state in which the gusset first horizontal plate portion is fixed to the end portion of the cross member, and the gusset vertical plate portion is fixed to the vertical plate portion of the side member. and extends from the upper edge of the vertical gusset plate portion and overlaps with the lower surface of the upper horizontal plate portion of the side member in proximity to or in contact with the lower surface of the vertical gusset plate portion, or extends from the lower edge of the vertical gusset plate portion and overlaps the lower surface of the upper horizontal plate portion of the side member. A gusset that overlaps the upper surface of the lower lateral plate portion of the side member in close proximity to or in contact with the upper surface . The gusset of claim 1, comprising:
The second gusset lateral plate portion has a front extension region that extends forward from the front end of the first gusset lateral plate portion, and a rear extension region that extends rearward from the rear end of the first gusset lateral plate portion. A gusset having an extended region of at least one of: Left and right side members extend in the front-rear direction on both sides in the vehicle width direction, and front and rear cross members extend in the vehicle width direction side by side with a space between the left and right side members in the front-rear direction. A vehicle body frame having vertical plate portions each standing substantially vertically and extending in the front-rear direction, and upper and lower horizontal plate portions extending inward in the vehicle width direction from upper and lower edges of the vertical plate portions and opposed to each other. , a gusset connecting the vehicle width direction end portions of the front and rear cross members and the side member,
a gusset front vertical plate portion fixed to the vertical plate portion of the side member by overlapping from the inside in the vehicle width direction;
a gusset rear vertical plate portion fixed to the vertical plate portion of the side member by overlapping from the vehicle width direction inner side behind the gusset front vertical plate portion;
a gusset front first horizontal plate portion extending inward in the vehicle width direction from a lower edge or an upper edge of the gusset front vertical plate portion and fixed to the upper or lower surface of the end portion of the front cross member;
A gusset rear first horizontal plate portion extending inward in the vehicle width direction from a lower edge or an upper edge of the gusset rear vertical plate portion and fixed to the upper surface or lower surface of the end portion of the rear cross member. When,
a gusset front second horizontal plate portion extending inward in the vehicle width direction from the upper edge or the lower edge of the gusset front vertical plate portion and facing the gusset front first horizontal plate portion; and an upper edge of the gusset rear vertical plate portion. or a gusset second lateral plate portion integrally having a gusset rear second lateral plate portion extending inward in the vehicle width direction from a lower edge and facing the gusset rear first lateral plate portion;
The gusset second horizontal plate portion is configured such that the gusset front first horizontal plate portion and the gusset rear first horizontal plate portion are fixed to the end portion of the cross member, and the gusset front vertical plate portion and the gusset rearward side plate portion are fixed to the end portion of the cross member. A state in which the vertical plate portion is in a gusset assembled state in which the vertical plate portion is fixed to the vertical plate portion of the side member, and is close to or in contact with the lower surface of the upper horizontal plate portion of the side member or the upper surface of the lower horizontal plate portion. A gusset characterized by overlapping with .

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