WO2022202669A1

WO2022202669A1 - Vehicle body frame structure

Info

Publication number: WO2022202669A1
Application number: PCT/JP2022/012644
Authority: WO
Inventors: 陵博関内
Original assignee: いすゞ自動車株式会社
Priority date: 2021-03-26
Filing date: 2022-03-18
Publication date: 2022-09-29
Also published as: JP7212868B2; JP2022151310A

Abstract

In this vehicle body frame structure, an end crossmember 3E has a U-shaped cross-section in which a crossmember upper plate portion 8 and a crossmember lower plate portion 9 extend opposingly toward the front of the vehicle respectively from an upper end edge and a lower end edge of a crossmember vertical plate portion 7 that is erected along the vehicle width direction. A pintle hook is to be hooked to the crossmember vertical plate portion 7. At both ends of the end crossmember 3E, the crossmember upper plate portion 8 is directly or indirectly overlapped with and joined to a side member upper plate portion 5 from below, and the crossmember lower plate portion 9 is directly or indirectly overlapped with and joined to a side member lower plate portion 6 from below.

Description

body frame structure

The present disclosure relates to a vehicle body frame structure in which pintle hooks are attached to end cross members.

Patent Document 1 describes a structure in which both ends of an end cross of a full tractor (a towing vehicle with a loading platform) are fastened to side rails. The end cross of the full tractor is equipped with a pintle hook, and when a full trailer (fully towed vehicle) is connected to the full tractor, the lunette eye on the full trailer side is hooked to the pintle hook. Coupling margins are formed along the webs of the side rails at both ends of the end cross, and by fastening the coupling margins to the webs of the side rails, both ends of the end crosses are coupled to the side rails.

Japanese Patent Application Laid-Open No. 2018-39307

The height position of the pintle hook on the full tractor side is set according to the height position of the lunette eye on the full trailer side. For example, if the position of the lunette eye is low, the position of the pintle hook is also set low. In order to lower the position of the pintle hook, the position of the end cross member (end cross) to which the pintle hook is attached should be lowered.

However, as in Patent Document 1, both ends of the end cross member are inserted between the upper plate portion and the lower plate portion of the side member (side rail), and both ends of the end cross member are inserted into the vertical plate portion of the side member ( In the structure where the end cross member is connected to the inner surface of the web, the height changeable range of the end cross member is limited between the upper plate portion and the lower plate portion of the side member. Therefore, if you want to lower the end cross member below the upper surface of the lower plate, you need to expand the vertical plate of the side member downward, and changing the shape of the side member requires a new mold. and the cost increases.

An object of the present disclosure is to provide a vehicle body frame structure capable of lowering the position of the pintle hook while suppressing an increase in cost.

A first aspect of the present disclosure is a vehicle body frame structure for a vehicle, in which end crosses extending along the vehicle width direction are provided at rear end portions of left and right side members extending along the vehicle front-rear direction on both sides in the vehicle width direction. Both ends of the member are joined. In each of the left and right side members, the side member upper plate portion and the side member lower plate portion face each other inward in the vehicle width direction from the upper end edge portion and the lower end edge portion of the side member vertical plate portion that stands up along the vehicle front-rear direction. is a U-shaped cross-section extending The end cross member has a U-shaped cross section in which the cross member upper plate portion and the cross member lower plate portion extend facing each other forward of the vehicle from the upper end edge portion and the lower end edge portion of the cross member vertical plate portion standing upright along the vehicle width direction. is. A pintle hook is attached to the vertical plate portion of the cross member.

At both ends of the end cross member, the cross member upper plate portion is directly or indirectly overlapped and joined to the side member upper plate portion from below, and the cross member lower plate portion is directly or indirectly joined to the side member lower plate portion from below. are combined by overlapping each other. To be directly overlapped and bonded means to overlap and bond without another member interposed therebetween, and to be indirectly overlapped and bonded means to overlap and bond with another member interposed therebetween. It is to be combined.

In the above configuration, without changing the shape of the side member, the cross member vertical plate portion can be expanded below the lower end of the side member (the lower surface of the side member lower plate portion) by changing the height position of the end cross member. You can set the position of the pintle hook lower.

A second aspect of the present disclosure is the vehicle body frame structure of the first aspect, wherein at both ends of the end cross member, plate-like upper gussets are provided between the side member upper plate portion and the cross member upper plate portion. The side member upper plate portion, the upper gusset, and the cross member upper plate portion are joined in an interposed state, and the plate-like lower gusset is interposed between the side member lower plate portion and the cross member lower plate portion. , the side member lower plate portion, the lower gusset and the cross member lower plate portion are coupled. The upper gusset has a wider range of overlap with the side member upper plate portion in the vehicle longitudinal direction than the cross member upper plate portion, and has a wider overlap range with the cross member upper plate portion in the vehicle width direction than the side member upper plate portion. The lower gusset has a wider range of overlap with the side member lower plate portion in the vehicle longitudinal direction than the cross member lower plate portion, and has a wider overlap range with the cross member lower plate portion in the vehicle width direction than the side member lower plate portion.

With the above configuration, the upper and lower gussets can increase the strength of the connection between the side members and the end cross members, and the position of the pintle hook can be set lower by the thickness of the lower gusset.

A third aspect of the present disclosure is the vehicle body frame structure of the first or second aspect, wherein at both ends of the end cross member, a plate-like member is formed between the side member lower plate portion and the cross member lower plate portion. The side member lower plate portion, the spacer, and the cross member lower plate portion are coupled with the spacer interposed therebetween.

In the above configuration, the spacers allow the use of end cross members having a larger vertical width than the side members. The position of the pintle hook can be lowered to a desired height by adjusting the plate thickness and the number of the pins.

According to the present disclosure, it is possible to lower the position of the pintle hook while suppressing an increase in cost.

FIG. 1 is a perspective view of a vehicle body frame structure according to an embodiment of the present disclosure, viewed obliquely from above and rearward of a vehicle. 2 is a perspective view of the end cross member, the upper gusset, the lower gusset, and the spacer of FIG. 1 as seen obliquely from above the front of the vehicle. FIG. 3 is a perspective view of the vehicle body frame structure of FIG. 1 as viewed diagonally from above. FIG. 4 is a perspective view of the vehicle body frame structure of FIG. 3 as viewed diagonally from below. 5 is a front view of the vehicle body frame structure of FIG. 3 as viewed in the direction of arrow V. FIG. 6 is a rear view of the vehicle body frame structure of FIG. 3 as seen from the direction of arrow VI. 7 is a side view of the vehicle body frame structure of FIG. 3 as viewed in the direction of arrow VII. FIG. 8 is a cross-sectional view of the vehicle body frame structure of FIG. 5 taken along line VIII-VIII.

An embodiment of the present disclosure will be described below with reference to the drawings. 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. 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.

The vehicle according to this embodiment is a full tractor capable of towing a full trailer (not shown). When towing a full trailer, the full trailer is connected to the vehicle by hooking a lunette eye (not shown) on the full tractor side to a pintle hook 10 equipped on the vehicle.

As shown in FIG. 1, a vehicle body frame 1, which is a structure for the lower portion of a vehicle body, includes a pair of left and right side members 2 extending longitudinally on both sides in the vehicle width direction, and left and right side members 2 extending along the vehicle width direction. A plurality of cross members 3 connecting side members 2 form a ladder-like configuration. The plurality of cross members 3 include an end cross member 3E arranged at the vehicle rear end of the vehicle body frame 1, and both ends of the end cross member 3E are coupled to the rear ends of the left and right side members 2. As shown in FIG. 1 shows only the end cross member 3E among the plurality of cross members 3. As shown in FIG. Further, the rear end portion of the vehicle body frame 1 is configured substantially left-right symmetrical.

As shown in FIGS. 1 to 8, the side member 2 has a U-shaped cross section that opens inward in the vehicle width direction. A side member upper plate portion 5 that extends inwardly in the vehicle width direction from the upper end edge thereof, and a side member upper plate portion 5 that extends inwardly in the vehicle width direction from the lower end edge of the side member vertical plate portion 4 and faces the side member upper plate portion 5 . It integrally has a side member lower plate portion 6 that The end cross member 3E has a U-shaped cross section that opens forward of the vehicle, and the cross member vertical plate portion 7 that stands up along the vehicle width direction extends from the upper edge of the cross member vertical plate portion 7 while bending toward the front of the vehicle. A cross member upper plate portion 8 and a cross member lower plate portion 9 extending from the lower edge of the cross member vertical plate portion 7 in a bent manner toward the front of the vehicle and opposed to the cross member upper plate portion 8 are integrally provided. The pintle hook 10 is attached to the rear surface of the cross member vertical plate portion 7 substantially in the center in the vehicle width direction, and is attached to the inner surface of the end cross member 3E (the front surface of the cross member vertical plate portion 7, the lower surface of the cross member upper plate portion 8 and the cross member). A reinforcing member 11 is fixed to the upper surface of the upper plate portion 9 to reinforce the end cross member 3E in order to ensure rigidity against the input load from the pintle hook 10. As shown in FIG.

At both ends of the end cross member 3E, the side member upper plate portion 5 is arranged above the cross member upper plate portion 8, the cross member lower plate portion 9 is arranged below the side member lower plate portion 6, and the cross member vertical The plate portion 7 is positioned slightly behind the rear end of the side member 2 . A plate-like upper gusset 12 is interposed between the side member upper plate portion 5 and the cross member upper plate portion 8 . The rear region 12A of the upper gusset 12 overlaps the cross member upper plate portion 8 from above, and the side member upper plate portion 5 overlaps the vehicle width direction outer region 12B of the upper gusset 12 from above. A plate-shaped lower gusset 13 and a plate-shaped spacer 14 are interposed between the side member lower plate portion 6 and the cross member lower plate portion 9 . The rear region 13A of the lower gusset 13 overlaps the cross member lower plate portion 9 from above, the spacer 14 overlaps the vehicle width direction outer region 13B of the lower gusset 13 from above, and the side member lower plate portion 6 overlaps the spacer 14 overlap from above. A spacer 14 may be interposed between the lower gusset 13 and the cross member lower plate portion 9 .

The vehicle width direction outer region 12B of the upper gusset 12 overlaps with the side member upper plate portion 5 in the vehicle longitudinal direction in a wider range than the cross member upper plate portion 8, and the front side of the vehicle width direction outer region 12B of the upper gusset 12 is , projects forward of the vehicle from the front edge of the cross member upper plate portion 8. - 特許庁The rear region 12A of the upper gusset 12 overlaps with the cross member upper plate portion 8 in a wider range than the side member upper plate portion 5 in the vehicle width direction. It protrudes inward in the vehicle width direction from the inner edge of the side member upper plate portion 5 in the vehicle width direction. The front side of the inner edge in the vehicle width direction of the upper gusset 12 inclines outward in the vehicle width direction toward the front of the vehicle.

Similarly to the upper gusset 12, the vehicle width direction outer region 13B of the lower gusset 13 overlaps with the side member lower plate portion 6 in the vehicle longitudinal direction in a wider range than the cross member lower plate portion 9. The front side of the direction outer region 13</b>B protrudes forward of the vehicle beyond the front edge of the cross member lower plate portion 9 . The rear region 13A of the lower gusset 13 overlaps with the cross member lower plate portion 9 in a wider range than the side member lower plate portion 6 in the vehicle width direction. It protrudes inward in the vehicle width direction from the inner edge in the vehicle width direction of the side member lower plate portion 6.例文帳に追加The front side of the inner edge in the vehicle width direction of the lower gusset 13 is inclined outward in the vehicle width direction toward the front of the vehicle.

The spacer 14 is a rectangular flat plate. The width of the spacer 14 in the vehicle width direction is slightly shorter than the width of the side member lower plate portion 6 in the vehicle width direction. is substantially equal to the length in the vehicle front-rear direction of the vehicle width direction outer region 13B of the lower gusset 13 . The shape (including the plate width and length) of the spacer 14 is not limited to the above, and can be arbitrarily set.

A plurality of first fastening holes 15 are formed on the rear side of the vehicle width direction outer region 12B of the upper gusset 12 (the vehicle width direction outer side of the rear region 12A), and a plurality of fastening holes 15 are formed on the front side of the vehicle width direction outer region 12B. A second fastening hole 16 is formed, and a plurality of third fastening holes 17 are formed inside the rear region 12A in the vehicle width direction (see FIG. 2). The rear side of the vehicle width direction outer region 12B of the upper gusset 12 is a region overlapping the side member upper plate portion 5 and the cross member upper plate portion 8, and the first fastening hole 15 is located between the side member upper plate portion 5 and the cross member upper plate portion 8. It passes through the upper gusset 12 and the cross member upper plate portion 8 . The front side of the vehicle width direction outer region 12B of the upper gusset 12 is a region that overlaps with the side member upper plate portion 5 but does not overlap with the cross member upper plate portion 8, and the second fastening hole 16 is formed in the side member upper plate portion. 5 and the upper gusset 12. The inner side in the vehicle width direction of the rear region 12A of the upper gusset 12 is a region that overlaps with the cross member upper plate portion 8 but does not overlap with the side member upper plate portion 5. It passes through the cross member upper plate portion 8 . The side member upper plate portion 5 and the upper gusset 12 are connected by fastening members (first to

third fastening members

18, 19, 20) such as rivets and bolts inserted through the first to third fastening holes 15, 16, 17. and the cross member upper plate portion 8 are fastened.

A plurality of fourth fastening holes 21 are formed on the rear side of the vehicle width direction outer region 13B of the lower gusset 13 (the vehicle width direction outer side of the rear region 13A), and a plurality of fastening holes 21 are formed on the front side of the vehicle width direction outer region 13B. A fifth fastening hole 22 is formed, and a plurality of sixth fastening holes 23 are formed inside the rear region 13A in the vehicle width direction (see FIG. 2). The rear side of the vehicle width direction outer region 13B of the lower gusset 13 is a region overlapping the side member lower plate portion 6, the spacer 14, and the cross member lower plate portion 9. It passes through the portion 6 , the spacer 14 , the lower gusset 13 and the cross member lower plate portion 9 . The front side of the vehicle width direction outer region 13B of the lower gusset 13 is a region that overlaps with the side member lower plate portion 6 and the spacer 14 but does not overlap with the cross member lower plate portion 9. The fifth fastening hole 22 is formed in the side member. It penetrates the lower plate portion 6 , the spacer 14 and the lower gusset 13 . The vehicle width direction inner side of the rear region 13A of the lower gusset 13 is a region that overlaps with the cross member lower plate portion 9 but does not overlap with the spacer 14 and the side member lower plate portion 6. It passes through the gusset 13 and the cross member lower plate portion 9 . The side member lower plate portion 6 and the spacer 14 are connected by fastening members (fourth to

sixth fastening members

24, 25, 26) such as rivets and bolts inserted through the fourth to sixth fastening holes 21, 22, 23. The lower gusset 13 and the cross member lower plate portion 9 are fastened.

In this way, on the upper side of both end portions of the end cross member 3E, the side member upper plate portion 5 and the upper gusset 12 are interposed between the side member upper plate portion 5 and the cross member upper plate portion 8. 12 and cross member upper plate portion 8 are coupled. Under the both ends of the end cross member 3E, the spacer 14 and the lower gusset 13 are interposed between the side member lower plate portion 6 and the cross member lower plate portion 9. Spacer 14, lower gusset 13 and cross member lower plate portion 9 are joined together.

According to this embodiment, without changing the shape of the side member 2, by changing the height position of the end cross member 3E, the cross member longitudinally moves below the lower end of the side member 2 (the lower surface of the side member lower plate portion 6). The plate portion 7 can be expanded, and the position of the pintle hook 10 can be set low.

The upper gusset 12 and the lower gusset 13 can increase the joint strength between the side member 2 and the end cross member 3E, and the position of the pintle hook 10 can be set lower by the plate thickness of the lower gusset 13.

Further, since the spacer 14 is interposed between the side member lower plate portion 6 and the cross member lower plate portion 9, the end cross member 3E having a larger vertical width than the side member 2 can be used, and the cross member Since the amount of downward extension of the vertical plate portion 7 increases or decreases according to the plate thickness of the spacer 14, the position of the pintle hook 10 can be lowered to a desired height by adjusting the plate thickness and the number of spacers 14.

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

For example, in the above embodiment, the upper gusset 12 is interposed between the side member upper plate portion 5 and the cross member upper plate portion 8 at both ends of the end cross member 3E, and the side member lower plate portion 6 and the cross member lower plate portion Although the lower gusset 13 and the spacer 14 are interposed with the plate portion 9, the upper gusset 12 and the lower gusset 13 may not be interposed, and the spacer 14 may not be interposed.

This application is based on a Japanese patent application (Japanese Patent Application 2021-054324) filed on March 26, 2021, the contents of which are incorporated herein by reference.

The present disclosure can be widely applied to vehicles in which pintle hooks are attached to end cross members.

1 Body frame 2 Side member 3 Cross member 3E End cross member 4 Side member vertical plate portion 5 Side member upper plate portion 6 Side member lower plate portion 7 Cross member vertical plate portion 8 Cross member upper plate portion 9 Cross member lower plate portion 10 pintle hook 11 reinforcing member 12 upper gusset 12A upper gusset rear region 12B upper gusset outer region 13 lower gusset 13A lower gusset rear region 13B lower gusset outer region 14

spacers

15, 16, 17, 21, 22, 23 fastening holes 18, 19, 20, 24, 25, 26 fastening members

Claims

Both ends of end cross members extending along the vehicle width direction are coupled to rear ends of left and right side members extending along the vehicle front-rear direction on both sides in the vehicle width direction. The side member upper plate portion and the side member lower plate portion extend inward in the vehicle width direction from the upper end edge portion and the lower end edge portion of the side member vertical plate portion standing upright along the front-rear direction, and the side member lower plate portion has a U-shaped cross section. The end cross member has a U-shaped cross section in which the cross member upper plate portion and the cross member lower plate portion extend facing each other forward of the vehicle from the upper end edge portion and the lower end edge portion of the cross member vertical plate portion standing upright along the vehicle width direction. A vehicle body frame structure in which a pintle hook is attached to the cross member vertical plate portion,
At both end portions of the end cross member, the cross member upper plate portion is directly or indirectly overlapped with the side member upper plate portion from below and joined, and the cross member lower plate portion is connected to the side member lower plate portion. are directly or indirectly overlapped and connected from below,
body frame structure.
The vehicle body frame structure according to claim 1,
At both end portions of the end cross member, the overlapping range with the side member upper plate portion in the vehicle front-rear direction is wider than the cross member upper plate portion, and the overlapping range with the cross member upper plate portion in the vehicle width direction is the above-described range. A plate-like upper gusset wider than the side member upper plate portion is interposed between the side member upper plate portion and the cross member upper plate portion, and the side member upper plate portion, the upper gusset, and the cross are interposed between the side member upper plate portion and the cross member upper plate portion. The member upper plate portion is coupled to the side member lower plate portion, and the overlapping range with the side member lower plate portion in the vehicle longitudinal direction is wider than the cross member lower plate portion, and the overlapping range with the cross member lower plate portion in the vehicle width direction is wider. In a state in which a plate-shaped lower gusset wider than the side member lower plate portion is interposed between the side member lower plate portion and the cross member lower plate portion, the side member lower plate portion, the lower gusset and the coupled with the lower plate portion of the cross member;
body frame structure.
The vehicle body frame structure according to claim 1 or claim 2,
At both ends of the end cross member, a plate-like spacer is interposed between the side member lower plate portion and the cross member lower plate portion. A vehicle body frame structure to which the plate portion is connected.