JP7327432B2 - Frame, frame mounting structure and vehicle - Google Patents

Description

The present disclosure relates to frames, frame mounting structures, and vehicles.

BACKGROUND ART A vehicle lower structure has a frame structure including side members extending in the direction of travel of the vehicle and cross frames extending in the vehicle width direction. Various vehicle parts are attached to the cross frame.

For example, Patent Document 1 discloses a frame structure having a pair of left and right rear side frames and a suspension cross member that extends in the vehicle width direction and is attached to the rear side frame. , shock absorbers are supported.

JP 2002-137616 A

When assembling a vehicle lower structure, it is necessary to arrange vehicle components such as a shock absorber before arranging vehicle equipment such as a transmission. However, when the suspension cross member extends in the vehicle width direction as in Patent Document 1, the suspension cross member is used when arranging the vehicle equipment between the rear side frames and when assembling the vehicle equipment. hinder at times.

The present disclosure has been made in consideration of the above points, and aims to provide a frame, a frame mounting structure, and a vehicle that facilitate assembly of a vehicle lower structure.

One aspect of the frame of the present disclosure is a frame that is arranged on a vehicle so as to extend in the vehicle width direction, comprising: a first outer member; A second outer member that is spaced apart by a distance longer than the dimension of the vehicle device in the vehicle width direction, and the first outer member and the second outer member are separate from each other, and the first a central member connected to one outer member and the second outer member, the central member including an upper member connected to the first outer member and the second outer member; A lower member that is separate from the member and connected to the first outer member and the second outer member below the upper member, and a connection portion with the first outer member A long hole is formed in the

One aspect of the frame mounting structure of the present disclosure includes the frame described above and predetermined vehicle equipment.

One aspect of the vehicle of the present disclosure includes the above-described frame mounting structure and a mounting section, the frame having a mounting section support surface, and the mounting section configured to support the mounting section. It is arranged to be supported by a support surface.

ADVANTAGE OF THE INVENTION According to this disclosure, it is possible to provide a frame, a frame mounting structure, and a vehicle that facilitate assembly of a vehicle lower structure.

FIG. 1 is a side view showing the vicinity of wheels of a vehicle according to the first embodiment. FIG. 2 is a plan view showing the vicinity of wheels of the frame mounting structure according to the first embodiment. FIG. 3 is a perspective view showing the vicinity of the frame of the frame mounting structure according to the first embodiment. FIG. 4 is a front view showing the central portion of the frame according to the second embodiment. FIG. 5 is a front view of the central member of the frame according to the second embodiment;

Embodiments of the present disclosure will be described below with reference to the drawings. In the following description, the side on which the vehicle moves forward and the side on which it moves backward are referred to as front and rear, respectively, and the left and right sides of the vehicle moving forward are referred to as front and rear, respectively. referred to as left and right.

(First embodiment)
FIG. 1 is a side view showing the vicinity of wheels 31 (described later) of a vehicle 1 according to the first embodiment. In the following embodiments, the vehicle 1 is described as being a rear engine vehicle and a bus.

A vehicle 1 includes a mounting portion 10 and a frame mounting structure 20 . The mounting unit 10 is the vehicle body. The frame mounting structure 20 is a lower structure of the vehicle 1, and includes a frame that is a framework of the vehicle 1, vehicle equipment, vehicle parts, and the like. The vehicle 1 is formed by arranging the mounting portion 10 on the frame mounting structure 20 .

The frame mounting structure 20 will be described below with reference to FIGS. 1 to 3. FIG. FIG. 2 is a plan view showing the vicinity of the wheel 31 of the frame mounting structure 20 according to the first embodiment. In FIG. 2, illustration of the shock absorber 60, bolts used for its attachment, and attachment holes are omitted. FIG. 3 is a perspective view showing the vicinity of a frame 40 (described later) of the frame mounting structure 20 according to the first embodiment.

The frame mounting structure 20 includes a pair of side members 21, a plurality of wheels 31, an axle 32, a frame 40, a plurality of brackets 44, a plurality of brackets 45, a frame 50, a plurality of brackets 54, a plurality of brackets 55, and a plurality of shock absorbers. 60 and a powertrain 70 .

The pair of side members 21 are members forming part of the frame of the vehicle 1, and extend in the direction of travel of the vehicle while being separated from each other in the vehicle width direction. By arranging the pair of side members 21 apart from each other, an arrangement space in which various vehicle devices are arranged is formed between the side members 21 . In this embodiment, this vehicle equipment is a powertrain 70 that includes a transmission 80 (described below).

The wheels 31 are rear wheels. As shown in FIG. 2, two sets of wheels 31 are arranged on the left and right sides in the vehicle width direction. Axle 32 connects a plurality of wheels 31 . Although not shown, the frame mounting structure 20 has a pair of front wheels.

The frame 40 is a member that forms part of the framework of the vehicle 1 and is a cross member that extends in the vehicle width direction. The frame 40 is arranged near the powertrain 70 , more specifically, at a position between the wheels 31 and the powertrain 70 .

The frame 40 comprises a first outer member 41, a second outer member 42 and a central member 43 which are separate from each other. Each of the first outer member 41, the second outer member 42, and the central member 43 extends in the traveling direction of the vehicle 1 from the wall portion extending in the vertical direction and the upper and lower ends of the wall portion. It has upper and lower flange portions, and has a U-shape when viewed from the side.

The first outer member 41 is a member arranged on the right side of the arrangement space, and is attached to the right side member 21 with a bolt via a bracket 44 .

The second outer member 42 is a member arranged on the left side with respect to the arrangement space, and is attached to the left side member 21 via a bracket 44 with bolts. The second outer member 42 extends a distance X (see FIG. 2) that is longer than the vehicle width direction dimension Y (see FIG. 2) of the portion of the powertrain 70 near the frame 40 (that is, the transmission 80). It is spaced apart from the outer member 41 .

The central member 43 is a member that connects the first outer member 41 and the second outer member 42 . The dimension between the upper and lower flange portions of the central member 43 is smaller than each dimension between the upper and lower flange portions of the first outer member 41 and the second outer member 42 . Therefore, the central member 43 is arranged to be inserted between the upper and lower flange portions of the first outer member 41 and the second outer member 42 .

The top surfaces of the upper flange portions of the first outer member 41, the second outer member 42, and the central member 43 are respectively supporting surfaces 410, 420, and 430 on which the mounting portion 10 is arranged. is. The first outer member 41 , the second outer member 42 , and the central member 43 support the mounting section 10 from below via the mounting section support surfaces 410 , 420 , 430 .

The frame 50 is a member that forms part of the framework of the vehicle 1 and is a cross member that extends in the vehicle width direction. The frame 50 is composed of one member and is not divided into a plurality of members. The frame 50 has a U shape when viewed from the side. The frame 50 is arranged at a position relatively far from the power train 70 , more specifically, on the front side of the wheels 31 . The frame 50 is attached to the left and right side members 21, 21 with bolts via brackets 54, respectively.

The shock absorber 60 is a vehicle component that reduces the impact that the vehicle 1 receives from the ground while the vehicle 1 is running, and is arranged on the front and rear sides of the right and left wheels 31, respectively. A shock absorber 60 on the rear side of wheel 31 is bolted to first outer member 41 and second outer member 42 via bracket 45, respectively. The front shock absorbers 60 of the wheels 31 are bolted to the frame 50 via brackets 55, respectively.

Powertrain 70 is a combination of transmission 80 and engine 90 for running vehicle 1 . The transmission 80 is arranged on the front side with respect to the engine 90 , that is, at a position close to the frame 40 .

As described above, according to the first embodiment, the frame 40 includes the first outer member 41, the second outer member 42, and the central member 43, which are separate members. In addition, the first outer member 41 and the second outer member 42 are arranged apart from each other by a distance X longer than the vehicle width direction dimension Y of the transmission 80 which is arranged at a position relatively close to the frame 40 . ing. As a result, even if the frame mounting structure 20 (that is, the lower structure) of the vehicle 1 is assembled in the following procedure, the possibility of the transmission 80 contacting the frame 40 can be reduced.
(1) Attach the first outer member 41 and the second outer member 42 to the side members 21, 21, respectively.
(2) attach the shock absorbers 60, 60 to the first outer member 41 and the second outer member 42;
(3) Place the powertrain 70 in the installation space by moving the powertrain 70 downward from above toward the installation space using a crane device such as a hoist crane, and assemble the powertrain 70 .
(4) The first outer member 41 and the second outer member 42 are connected by attaching the central member 43 to each of the first outer member 41 and the second outer member 42 .

That is, even if the shock absorbers 60, 60 are attached to the side members 21, 21, the powertrain 70 is arranged in the arrangement space, and the powertrain 70 is assembled, the powertrain 70 is arranged and assembled in the arrangement space. Sufficient space for

Therefore, according to the first embodiment, the frame 40 does not interfere with the arrangement and assembly of the powertrain 70, and the arrangement and assembly in the installation space can be easily performed. As a result, it becomes easier to assemble the lower structure of the vehicle 1 .

(Second embodiment)
In the following, the second embodiment will be described mainly about the differences from the first embodiment.

FIG. 4 is a front view showing the central portion of the frame 40 according to the second embodiment. The central member 43 comprises an upper member 431 and a lower member 432 which are separate from each other. Each of the upper member 431 and the lower member 432 has a wall portion and a flange portion extending in the traveling direction of the vehicle 1 from one end of the wall portion, and has an L shape when viewed from the side. there is In addition, in the second embodiment, the upper surface of the flange portion of the upper member 431 is the mounting portion support surface 430 .

The upper member 431 is a member that connects the first outer member 41 and the second outer member 42 on the upper side. The lower member 432 is a member that connects the first outer member 41 and the second outer member 42 below the upper member 431 .

The lower member 432 is spaced apart from the upper member 431, and the dimension Z of the gap between the upper member 431 and the lower member 432 is, for example, approximately 10 mm.

FIG. 5 is a front view of the upper member 431 of the frame 40 according to the second embodiment. A long hole 433 is formed in the connecting portion of the upper member 431 with the second outer member 42 . More specifically, long holes 433 are formed in the left end of the wall of the upper member 431 (see FIG. 5) and the left end of the flange of the upper member 431 (not shown). The elongated hole 433 is a hole through which a bolt is inserted when connecting with the second outer member 42 . The long hole 433 is a hole elongated in the vehicle width direction.

A substantially circular hole 434 is formed in the portion of the upper member 431 that is connected to the first outer member 41 . More specifically, a substantially circular hole 434 is formed in the right end of the wall of the upper member 431 (see FIG. 5) and the right end of the flange of the upper member 431 (not shown). The hole 434 is a hole through which a bolt is inserted when connecting with the first outer member 41 .

Although not shown, an elongated hole is also formed in the connecting portion of the lower member 432 with the second outer member 42 (that is, the left end portion of the wall portion and the flange portion). A substantially circular hole is formed in the connection portion with the first outer member 41 (that is, the right end portion of the wall portion and the flange portion).

After attaching the first and second outer members to the right and left side members 21, 21, respectively, the first outer member 41 and the second outer member 42 may become distorted. Specifically, the right end portion of the first outer member 41 and the left end portion of the second outer member 42 are lowered downward, and the first outer member 41 and the second outer member 41 extend outward in the vehicle width direction. The member 42 is tilted. As a result, the distance between the first outer member 41 and the second outer member 42 in the vehicle width direction becomes longer.

However, according to the second embodiment, the central member 43 has the upper member 431 and the lower member 432 that are separate from each other. Even if it tilts outward and the distance between the first outer member 41 and the second outer member 42 increases, the first outer member 41 and the second outer member 42 can be easily connected. can.

Further, since the upper member 431 and the lower member 432 are separated from each other, even if the inclination of the first outer member 41 and the second outer member 42 with respect to the outside in the vehicle width direction is relatively large, the upper member 431 is and the lower member 432 can connect the first outer member 41 and the second outer member 42 . Therefore, the strength of the frame 40 can be secured.

A long hole 433 is formed in the connecting portion of the upper member 431 and the lower member 432 to the second outer member. Therefore, even if the first outer member 41 and the second outer member 42 are tilted outward in the vehicle width direction, the displacement between the first outer member 41 and the second outer member 42 is absorbed. while the first outer member 41 and the second outer member 42 can be connected.

(Modification)
A long hole 433 is formed in the connecting portion (that is, the right end of the wall portion and the flange portion) of the upper member 431 and the lower member 432 of the second embodiment to the first outer member 41 , and the second outer member 42 A substantially circular hole 434 may be formed in the connecting portion to the (ie, the left end of the wall and flange).

A long hole 433 may be formed in the upper member 431 and the lower member 432 at the connection portion of both the first outer member 41 and the second outer member 42 .

That is, at least one of the connecting portion to the first outer member 41 and the connecting portion to the second outer member 42 in the upper member 431 and the lower member 432 should be formed with the long hole 433 .

If the first outer member 41 and the second outer member 42 are tilted outward in the vehicle width direction, the left end of the first outer member 41 in the up-down direction becomes the second outer member 42. If it is assumed that it will be higher or lower than the right end, the elongated hole 433 may be formed to be longer in the vertical direction.

In the above-described embodiments, the bolts are used to attach each part, but each part may be attached by means other than bolts.

The dimension between the upper and lower flange portions of the central member 43 may be the same as each dimension between the upper and lower flange portions of the first outer member 41 and the second outer member 42 .

The frame 40 can be mounted with a vehicle component such as the shock absorber 60 and does not necessarily have a U-shape as long as the strength required to support the mounting portion 10 is ensured. For example, the frame 40 may have any shape such as an L shape, a hollow square shape, and a flat plate shape.

Although the frame 40 is divided into three members in the vehicle width direction in the above-described embodiment, it may be divided into four or more members. In the second embodiment, the central member 43 of the frame 40 is divided into two upper and lower members, but it may be divided into three or more members.

It should be noted that the frame 50, like the frame 40, may be composed of a plurality of members that are separate from each other.

A vehicle component other than the shock absorber 60 may be attached to the frame 40 . Further, the vehicle 1 may be a vehicle that does not have the shock absorber 60, and the frame 40 may not have any vehicle parts attached thereto.

Also, the frame 40 does not necessarily have to be arranged near the power train 70, and may be arranged near relatively large vehicle equipment. Such vehicle equipment includes, for example, an air tank, and the frame 40 may be positioned near the air tank.

The mounting portion 10 is not limited to the vehicle body. For example, when the vehicle 1 is a truck, the mounted part 10 is a loading platform for loading cargo.

The vehicle 1 does not necessarily have to be a rear engine vehicle. The vehicle 1 may be a vehicle having a lower structure in which relatively large vehicle equipment such as the power train 70 is arranged relatively close to the frame 40 .

The above-described embodiments and modifications are merely examples of specific implementations of the present disclosure, and the technical scope of the present disclosure should not be construed to be limited by these. That is, the present disclosure can be embodied in various forms without departing from its spirit or essential characteristics.

INDUSTRIAL APPLICABILITY The present disclosure can be suitably applied to a frame extending in the vehicle width direction and arranged near vehicle equipment, a frame mounting structure having the frame, and a vehicle having the frame mounting structure.

Reference Signs List 1 vehicle 10 mounting section 20 frame mounting structure 21 side member 31 wheel 32 axle 40 frame 41 first outer member 410 mounting section support surface 42 second outer member 420 mounting section support surface 43 central member 430 mounting section Support Surface 431 Upper Member 432 Lower Member 433 Long Hole 434 Hole 44 Bracket 45 Bracket 50 Frame 54 Bracket 55 Bracket 60 Shock Absorber 70 Power Train 80 Transmission 90 Engine

Claims (6)

A frame arranged in a vehicle so as to extend in the vehicle width direction,
a first outer member;
a second outer member spaced apart from the first outer member by a distance longer than the vehicle width direction dimension of predetermined vehicle equipment mounted on the vehicle;
a central member, separate from the first outer member and the second outer member, connected to the first outer member and the second outer member;
with
The central member is an upper member that is connected to the first outer member and the second outer member, and is separate from the upper member, and is lower than the upper member and the first outer member and a lower member connected to the second outer member, and a long hole is formed in a connection portion with the first outer member,
flame. the lower member is connected to the first outer member and the second outer member while being spaced apart from the upper member;
A frame according to claim 1 . a frame according to claim 1 or 2 ;
the predetermined vehicle equipment;
A frame mounting structure comprising: The predetermined vehicle equipment is a transmission,
The frame mounting structure according to claim 3 . further comprising a plurality of shock absorbers respectively attached to the first outer member and the second outer member;
The frame mounting structure according to claim 3 or 4 . a frame mounting structure according to any one of claims 3 to 5 ;
a body part;
with
The frame has a mounting portion support surface,
The mounting portion is arranged so as to be supported by the mounting portion support surface,
vehicle.

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