JP7235624B2 - car body structure - Google Patents

Description

The present invention relates to vehicle body structures.

As a conventional vehicle body structure, for example, a technique described in Patent Document 1 is known. The vehicle body structure described in Patent Document 1 includes a leaf spring supported by a vehicle body frame via a front bracket and a rear bracket, and an axle fixed to the central portion of the leaf spring.

Japanese Utility Model Laid-Open No. 2-135308

By the way, for example, the body structure of a truck includes a pair of left and right rods arranged to connect an axle and a connecting body and extending in the front-rear direction, and a pair of left and right rod brackets for attaching the rods to the body frame. structure. When assembling such a vehicle body structure, variations in the left-right direction (vehicle width direction) may occur. At this time, in order to absorb variations in the vehicle width direction between the vehicle body frame and the rod bracket, it takes considerable time and effort to assemble the vehicle body structure.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle body structure capable of reducing labor required for assembly work.

A vehicle body structure according to an aspect of the present invention includes a vehicle body frame, an axle that is arranged below the vehicle body frame and extends in the vehicle width direction, and an axle that is arranged below the vehicle body frame on one front and rear side of the axle and extends in the vehicle width direction. a pair of left and right rods arranged to connect the axle and the connecting body and extending in the longitudinal direction; and a pair of left and right rod brackets for attaching the rods to the vehicle body frame, wherein the rod brackets are: The upper bracket portion fixed to the body frame, the lower bracket portion arranged below the upper bracket portion and fixed to the rod, and the relative position of the upper bracket portion to the lower bracket portion can be adjusted in the vehicle width direction. It has a connecting portion that connects the upper bracket portion and the lower bracket portion so that

When assembling such a vehicle body structure, an upper bracket part of each rod bracket is assembled to the vehicle body frame, and an axle module is manufactured by assembling an axle, a connecting body, each rod, and a lower bracket part of each rod bracket. Then, the upper bracket portion and the lower bracket portion are connected by the connecting portion. At this time, the connecting portion can adjust the relative position of the upper bracket portion with respect to the lower bracket portion in the vehicle width direction. Therefore, even if there is variation in the vehicle width direction between the upper bracket portion assembled to the vehicle body frame and the lower bracket portion of the axle module, the coupling portion can absorb the variation in the vehicle width direction. As a result, it is possible to reduce the labor required for the assembly work of the vehicle body structure.

The connecting portion has a first connecting plate provided at the lower end of the upper bracket portion, and a second connecting plate provided at the upper end of the lower bracket portion and engaged with the first connecting plate. is provided with a plurality of first holes through which the shafts of the bolts pass, and the second connecting plate is provided with a plurality of second holes through which the shafts of the bolts pass so as to overlap the first holes. Either one of the first hole and the second hole may have an elongated hole shape extending in the vehicle width direction.

In such a configuration, the upper bracket portion and the lower bracket portion are connected by fastening the first connecting plate and the second connecting plate using a plurality of sets of bolts and nuts. At this time, the play between the first hole portion and the second hole portion can easily absorb variations in the vehicle width direction between the upper bracket portion and the lower bracket portion.

The first connecting plate and the second connecting plate have a square shape, the first holes are provided in at least four corners of the first connecting plate, and the second holes are provided in the second connecting plate. It may be provided on at least four corner sides.

In such a configuration, the first connecting plate and the second connecting plate are fastened with bolts and nuts at at least four locations on the front, rear, left, and right. Therefore, even if one of the first hole and the second hole has an elongated shape, the first connecting plate and the second connecting plate can be firmly fastened.

According to the present invention, it is possible to reduce the labor required for assembly work of the vehicle body structure.

It is a perspective view showing the body structure concerning one embodiment of the present invention. FIG. 2 is a front view of the vehicle body structure shown in FIG. 1; 3 is an exploded side view of the lower rod bracket shown in FIG. 2; FIG. 4 is a plan view of the connecting plate shown in FIG. 3; FIG. 2 is a schematic diagram showing a method of assembling the vehicle body structure shown in FIG. 1; FIG. It is a front view of the vehicle body structure as a comparative example.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or equivalent elements are denoted by the same reference numerals, and overlapping descriptions are omitted.

FIG. 1 is a perspective view showing a vehicle body structure according to one embodiment of the present invention. 2 is a front view of the vehicle body structure shown in FIG. 1. FIG. 1 and 2, a vehicle body structure 1 of this embodiment is a part of an air suspension structure of a vehicle. A vehicle body structure 1 includes a vehicle body frame 2, an axle 3, a stabilizer linker 4, two upper rods 5, a pair of left and right lower rods 6, and a pair of left and right lower rod brackets 7. - 特許庁

The axle 3 is arranged below the vehicle body frame 2 . The axle 3 extends in the vehicle width direction (Y direction), which is the lateral direction of the vehicle. Both ends of the axle 3 are provided with axle hubs 3a to which wheels (not shown) are attached.

The stabilizer linker 4 is arranged on the lower side of the vehicle body frame 2 on the front side of the axle 3 . The stabilizer linker 4 extends in the vehicle width direction. The stabilizer linker 4 constitutes a pipe-shaped connecting body.

The upper rod 5 is arranged so as to connect the upper portion of the central portion of the axle 3 in the vehicle width direction and the left and right side portions of the vehicle body frame 2 . The upper rod 5 is arranged in a V shape when viewed in the vertical direction (Z direction) of the vehicle.

The lower rod 6 is arranged on the lower side of the vehicle body frame 2 so as to connect the lower portion of the axle 3 and the stabilizer linker 4 . The lower rod 6 extends in the longitudinal direction (X direction) of the vehicle.

The lower rod bracket 7 is a member that attaches the lower rod 6 together with the stabilizer linker 4 to the vehicle body frame 2 . The lower rod bracket 7 has an upper bracket portion 8 and a lower bracket portion 9 arranged below the upper bracket portion 8 . That is, the lower rod bracket 7 has a structure vertically divided into two.

An upper end portion of the upper bracket portion 8 is fixed to the vehicle body frame 2 . A connecting plate 10 (first connecting plate) is provided at the lower end of the upper bracket portion 8 . A lower end portion of the lower bracket portion 9 is fixed to the lower rod 6 and the stabilizer linker 4 . A connecting plate 11 (second connecting plate) that engages with the connecting plate 10 is provided at the upper end of the lower bracket portion 9 .

As shown in FIG. 3, the connecting plates 10 and 11 form a connecting portion 14 that connects the upper bracket portion 8 and the lower bracket portion 9 with a plurality of sets (here, four sets) of bolts 12 and nuts 13. ing. The connecting plates 10 and 11 are fastened together by a plurality of sets of bolts 12 and nuts 13 .

As shown in FIG. 4(a), the connecting plate 10 has a rectangular shape extending in the front-rear direction when viewed from above and below. The connecting plate 10 is provided with a plurality of (here, four) holes 15 (first holes) through which the shafts 12a of the bolts 12 pass.

The holes 15 are provided on the sides of the four corners of the connecting plate 10 . That is, two holes 15 are provided side by side in the vehicle width direction at the front end and the rear end of the connecting plate 10 . The hole portion 15 has an elongated hole shape extending in the vehicle width direction in a plan view.

As shown in FIG. 4(b), the connecting plate 11 has a rectangular shape when viewed from above and below. The shape and dimensions of the connecting plate 11 are the same as those of the connecting plate 10 . The connecting plate 11 is provided with a plurality of (here, four) holes 16 (second holes) through which the shafts 12a of the bolts 12 pass.

Each hole 16 is provided in the connection plate 11 so as to overlap with each hole 15 of the connection plate 10 . The holes 16 are provided on the sides of the four corners of the connecting plate 11 . That is, two holes 16 are provided side by side in the vehicle width direction at the front end and the rear end of the connecting plate 11 . The hole 16 has a circular shape in plan view. The diameter of the hole portion 16 is slightly larger than the diameter of the shaft portion 12 a of the bolt 12 .

When connecting the upper bracket portion 8 and the lower bracket portion 9 with the bolt 12 and the nut 13, the shaft portion 12a of the bolt 12 is passed through the hole portion 15 of the connecting plate 10 and the hole portion 16 of the connecting plate 11. By screwing a nut 13 onto the tip of the shaft portion 12a, the connecting plates 10 and 11 are tightened.

Here, the shape of the hole portion 15 is circular, but the shape of the hole portion 16 is an elongated hole shape extending in the vehicle width direction. Therefore, a backlash in the vehicle width direction is generated between the hole portion 15 and the hole portion 16 . Therefore, it is possible to change the relative position of the upper bracket portion 8 with respect to the lower bracket portion 9 in the vehicle width direction. That is, the connecting portion 14 connects the upper bracket portion 8 and the lower bracket portion 9 so that the relative position of the upper bracket portion 8 with respect to the lower bracket portion 9 can be adjusted in the vehicle width direction.

When assembling the vehicle body structure 1 as described above, the upper end portion of the upper bracket portion 8 of each lower rod bracket 7 is fixed to the outer surface of the vehicle body frame 2 as shown in FIGS. Also, one axle module 17 is fabricated by assembling the axle 3, the stabilizer linker 4, the upper rods 5, the lower rods 6, and the lower bracket portions 9 of the lower rod brackets 7. As shown in FIG.

When manufacturing the axle module 17 , first, one end of each lower rod 6 is connected to both end portions of the axle 3 , and the other end of each lower rod 6 is connected to the stabilizer linker 4 . Then, the lower end of the lower bracket portion 9 of each lower rod bracket 7 is fixed to the lower rod 6 and stabilizer linker 4 . Also, one end of each upper rod 5 is fixed to the central portion of the axle 3 in the vehicle width direction.

Then, the connecting plate 10 of each upper bracket portion 8 assembled to the vehicle body frame 2 and the connecting plate 11 of each lower bracket portion 9 of the axle module 17 are butted against each other, and in this state, the other end portion of each upper rod 5 of the axle module 17 is mounted. are fixed to the left and right sides of the vehicle body frame 2.

After that, the connecting plates 10 and 11 are fastened with bolts 12 and nuts 13 to connect the upper bracket portions 8 and the lower bracket portions 9, respectively. At this time, the relative position of the upper bracket portion 8 with respect to the lower bracket portion 9 can be adjusted in the vehicle width direction. Therefore, even if the position of the upper bracket portion 8 and the position of the lower bracket portion 9 are slightly deviated in the vehicle width direction, the respective upper bracket portions 8 and the respective lower bracket portions 9 are reliably connected.

FIG. 6 is a front view of a vehicle body structure as a comparative example. In FIG. 6 , the vehicle body structure 50 of this comparative example includes a pair of left and right lower rod brackets 51 . An upper end portion of the lower rod bracket 51 is fixed to the vehicle body frame 2 . A lower end portion of the lower rod bracket 51 is fixed to the lower rod 6 and the stabilizer linker 4 . When assembling such a vehicle body structure 50 , each lower rod bracket 51 fixed to each lower rod 6 and stabilizer linker 4 is assembled to the outer surface of the vehicle body frame 2 .

By the way, when the vehicle body structure is assembled, variations in the vehicle width direction may occur. In the vehicle body structure 50 of this comparative example, variations in the vehicle width direction between the vehicle body frame 2 and the lower rod bracket 51 are absorbed, as shown in FIG. 6, for example. In this case, a gap S is provided between the body frame 2 and the lower rod bracket 51, and the spacer 52 is arranged in the gap S to absorb variations in the vehicle width direction. However, it is necessary to measure the length of the gap S between the vehicle body frame 2 and the lower rod bracket 51 for each assembly work, and insert the spacer 52 into the gap S in accordance with the length of the gap S. For this reason, it is difficult to easily realize module assembly of the vehicle body structure, and the assembly work of the vehicle body structure takes considerable time and effort.

To cope with such a problem, in the present embodiment, when assembling the vehicle body structure 1, the upper bracket portion 8 of each lower rod bracket 7 is assembled to the vehicle body frame 2, and the axle 3, the stabilizer linker 4, each upper rod 5, each lower rod 6 and the lower bracket portion 9 of each lower rod bracket 7 are assembled to produce an axle module 17 . Then, the upper bracket portion 8 and the lower bracket portion 9 are connected by the connecting portion 14 . At this time, the connecting portion 14 can adjust the relative position of the upper bracket portion 8 with respect to the lower bracket portion 9 in the vehicle width direction. Therefore, even if there is variation in the vehicle width direction between the upper bracket portion 8 assembled to the vehicle body frame 2 and the lower bracket portion 9 of the axle module 17, the connection portion 14 can absorb the variation in the vehicle width direction. can be done. As a result, it becomes possible to easily realize the module assembly of the vehicle body structure 1, and the labor required for the assembly work of the vehicle body structure 1 can be reduced.

In addition, since the lower rod bracket 7 is divided into the upper bracket portion 8 and the lower bracket portion 9, the upper bracket portion 8 and the lower bracket portion 9, which are part of the lower rod bracket 7, are miniaturized. be. Therefore, the moldability (manufacturability) of the upper bracket portion 8 and the lower bracket portion 9 can be improved.

In this embodiment, the connecting portion 14 has a connecting plate 10 provided at the lower end of the upper bracket portion 8 and a connecting plate 11 provided at the upper end of the lower bracket portion 9 . A plurality of elongated holes 15 through which the shafts 12a of the bolts 12 pass are provided. are set to overlap. Therefore, the upper bracket portion 8 and the lower bracket portion 9 are connected by fastening the connecting plates 10 and 11 using a plurality of sets of bolts 12 and nuts 13 . At this time, the backlash between the hole portions 15 and 16 can easily absorb variations in the vehicle width direction between the upper bracket portion 8 and the lower bracket portion 9 .

Further, in the present embodiment, the connecting plates 10 and 11 are rectangular, the holes 15 are provided at the four corners of the connecting plate 10, and the holes 16 are provided at the four corners of the connecting plate 11. It is provided on the corner side. For this reason, the connecting plates 10 and 11 are fastened together by bolts 12 and nuts 13 at four locations on the front, rear, left, and right. Therefore, even if the hole portion 15 has an elongated hole shape, the connection plates 10 and 11 can be firmly fastened.

In addition, this invention is not limited to the said embodiment. For example, in the above-described embodiment, the plurality of holes 15 provided in the connecting plate 10 of the upper bracket portion 8 have an elongated hole shape extending in the vehicle width direction, but the shape is not particularly limited, and the lower bracket can A plurality of holes 16 provided in the connecting plate 11 of the portion 9 may have an elongated hole shape extending in the vehicle width direction.

In the above embodiment, the holes 15 are provided at the four corners of the connecting plate 10, and the holes 16 are provided at the four corners of the connecting plate 11. The number is not particularly limited to four as long as the fastening force of the connecting plates 10 and 11 is ensured.

Moreover, in the above-described embodiment, the connecting plates 10 and 11 have a rectangular shape, but the shape of the connecting plates 10 and 11 is not particularly limited to a rectangular shape, and may be a square shape. Moreover, the shape of the connecting plates 10 and 11 does not have to be such a square shape, and may be, for example, a circular shape.

Further, in the above embodiment, the relative position of the upper bracket portion 8 with respect to the lower bracket portion 9 can be adjusted in the vehicle width direction by utilizing the backlash of the holes 15 and 16 through which the shaft portions 12a of the bolts 12 pass. In addition, the upper bracket portion 8 and the lower bracket portion 9 are connected by bolts 12 and nuts 13, but the method of connecting the upper bracket portion 8 and the lower bracket portion 9 is limited to the bolts 12 and nuts 13 in particular. can't

In the vehicle body structure 1 of the above-described embodiment, the lower rod 6 connects the axle 3 and the stabilizer linker 4 arranged on the front side of the axle 3. The present invention can also be applied to a vehicle body structure having a pair of left and right rods that connect the connecting body.

DESCRIPTION OF SYMBOLS 1... Body structure, 2... Body frame, 3... Axle, 4... Stabilizer (connecting body), 6... Lower rod (rod), 7... Lower rod bracket (rod bracket), 8... Upper bracket part, 9... Lower bracket part , 10... Connection plate (first connection plate) 11... Connection plate (second connection plate) 12... Bolt 12a... Shaft 14... Connection part 15... Hole (first hole) 16... hole (second hole);

Claims (3)

body frame and
an axle arranged on the lower side of the vehicle body frame and extending in the vehicle width direction;
a connecting body arranged on the lower side of the vehicle body frame on one front and rear side of the axle and extending in the vehicle width direction;
a pair of left and right rods arranged to connect the axle and the connecting body and extending in the front-rear direction;
a pair of left and right rod brackets for attaching the rod to the vehicle body frame;
The rod bracket is
an upper bracket portion fixed to the vehicle body frame;
a lower bracket portion disposed below the upper bracket portion and fixed to the rod;
A vehicle body structure having a connecting portion that connects the upper bracket portion and the lower bracket portion so that the relative position of the upper bracket portion with respect to the lower bracket portion can be adjusted in the vehicle width direction. The connecting portion has a first connecting plate provided at the lower end of the upper bracket portion, and a second connecting plate provided at the upper end of the lower bracket portion and engaged with the first connecting plate,
The first connecting plate is provided with a plurality of first holes through which shafts of bolts pass,
The second connecting plate is provided with a plurality of second holes through which shafts of the bolts pass so as to overlap with the first holes,
2. The vehicle body structure according to claim 1, wherein one of said first hole and said second hole has an elongated hole shape extending in said vehicle width direction. The first connecting plate and the second connecting plate have a rectangular shape,
The first hole is provided on at least four corner sides of the first connecting plate,
3. The vehicle body structure according to claim 2, wherein said second holes are provided on at least four corners of said second connecting plate.

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