vehicle

Abstract

To provide a technique capable of properly transferring a load from a trailing arm.SOLUTION: A vehicle comprises: a rocker 12 which extends in a front / rear direction of the vehicle; a cross member 14 which is joined to a rear end of the rocker and extends in a vehicle width direction; a rear side member 16 which is joined to the cross member and extends rearward from the cross member; and a bracket 18 in which a mounting portion 18a for mounting a trailing arm 40 is located forward of the rear side member and which is joined to the rocker, the cross member and the rear side member.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The technology disclosed in this specification relates to a vehicle. [Background technology]

[0002] Patent Document 1 discloses a vehicle equipped with a rocker extending in the longitudinal direction of the vehicle and a rear side member extending rearward from the rear of the rocker. In the vehicle, the rocker and the rear side member are each located at the front end of a trailing arm and connected to the front end of the trailing arm via a bracket. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-066338 Summary of the Invention [Problem to be solved by the invention]

[0004] Depending on the size of the vehicle, the rear side member may not extend all the way to the front end of the trailing arm. In this case, the trailing arm bracket is not attached to the rear side member, and the load transmitted from the trailing arm to the bracket may not be properly transmitted from the bracket to the rear side member.

[0005] The present specification provides a technique that can appropriately transmit the load from the trailing arm. [Means for solving the problem]

[0006] The technology disclosed in this specification relates to a vehicle, which may include a rocker extending in a longitudinal direction of the vehicle, a cross member joined to a rear end of the rocker and extending in a width direction of the vehicle, a rear side member joined to the cross member and extending rearward from the cross member, and a bracket having an attachment portion for attaching a trailing arm located forward of the rear side member, the bracket being joined to the rocker, the cross member, and the rear side member.

[0007] In this configuration, the mounting portion of the trailing arm is located forward of the rear side member, and the bracket is joined to the rocker, cross member, and rear side member. This allows the load transmitted from the trailing arm to the bracket to be transmitted to the rocker, cross member, and rear side member, i.e., to the frame members in the longitudinal and lateral directions of the vehicle body. As a result, the vehicle's handling stability and noise and vibration performance can be improved. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] 1, a vehicle 10 forms the front and bottom of the passenger compartment where occupants are located, and the bottom of the luggage compartment located at the rear of the passenger compartment. The vehicle 10 is equipped with framework members including a pair of rockers 12, 12, a rear cross member 14, a pair of rear side members 16, 16, and one or more cross members (not shown).

[0010] The pair of rockers 12, 12 are arranged on both ends in the width direction W of the vehicle 10 of a floor panel 20 that forms the bottom of the passenger compartment. Each of the pair of rockers 12, 12 extends from the front end of the floor panel 20 at both ends in the width direction W to the rear end of the floor panel 20 along the front-to-rear direction L. A battery 50 that supplies power to the drive motor of the vehicle 10 is arranged below the floor panel. The rocker 12 has a cross-sectional shape with multiple bends in a cross section perpendicular to the front-to-rear direction L.

[0011] A plurality of cross members (not shown) are arranged between the pair of rockers 12, 12 and are joined to the floor panel. Each of the plurality of cross members extends in the width direction W and is joined to each of the pair of rockers 12, 12. The plurality of cross members includes a rear cross member 14. The rear cross member 14 is joined to each of the pair of rockers 12. The rear cross member 14 has a cross-sectional shape with a plurality of bends in a cross section perpendicular to the width direction W. The rear cross member 14 is joined to the rear floor.

[0012] A pair of rear side members 16, 16 are joined to the rear of the rear cross member 14. Each of the pair of rear side members 16, 16 extends rearward from the rear end of the rear cross member 14. Each of the pair of rear side members 16, 16 extends from the rear end of each of the pair of rockers 12, 12 to the rear end of the vehicle 10, on the inside of each of the pair of rockers 12, 12 within the vehicle 10. The rear side member 16 may or may not be joined to the rocker 12. The rear side member 16 is joined to the rear floor. The rear side member 16 has a cross-sectional shape with multiple bends in a cross section perpendicular to the fore-and-aft direction L.

[0013] Brackets 18 for attaching trailing arms 40 are disposed at the rear end of the rocker 12, the left end of the rear cross member 14, and the front end of the rear side member 16. The trailing arm 40 supports the rear wheels of the vehicle 10 and swingably connects the rear wheels to the vehicle frame members. The brackets 18 are disposed below the rocker 12, the rear cross member 14, and the rear side member 16. The brackets 18 are joined to the rocker 12 at the rear end of the rocker 12, the rear cross member 14 at the left end of the rear cross member 14, and the rear side member 16 at the front end of the rear side member 16. The method of joining the brackets 18 to the rocker 12, the rear cross member 14, and the rear side member 16 is not particularly limited, and may be, for example, welding, fastening with bolts, etc. The brackets 18 may be formed from a single steel plate or may be formed by overlapping multiple steel plates.

[0014] Bracket 18 is provided with mounting portion 18a, which mounts the front end of trailing arm 40 to swingably support trailing arm 40. Mounting portion 18a has a shaft inserted into an opening located at the front end of trailing arm 40.

[0015] Similarly, on the right side of the vehicle 10, the bracket 18 is joined to the rocker 12 at the rear end of the rocker 12, to the rear cross member 14 at the right end of the rear cross member 14, and to the rear side member 16 at the front end of the rear side member 16.

[0016] The bracket 18 connects the rocker 12 and rear side member 16 extending in the fore-and-aft direction L and the rear cross member 14 extending in the width direction W in a diagonal manner at the intersection of the rocker 12 and rear side member 16 extending in the fore-and-aft direction L and the rear cross member 14 extending in the width direction W.

[0017] As the size of the vehicle 10 becomes smaller, the rear side members 16 may be set shorter, and a structure may be adopted in which the rear side members 16 do not extend to the mounting portions 18a of the trailing arms 40. According to the vehicle 10, the rocker 12, the rear side members 16, and the rear cross member 14 can be connected by the brackets 18.

[0018] This allows the load transmitted from the trailing arm 40 to the bracket 18 to be transmitted to the rocker 12 and rear side member 16, which extend in the fore-and-aft direction L of the vehicle 10, and to the rear cross member 14, which extends in the width direction W. This allows the load on the trailing arm 40 to be appropriately borne by the frame members of the vehicle 10. As a result, by stabilizing the trailing arm 40, the handling stability and noise and vibration performance of the vehicle 10 can be improved.

[0019] Furthermore, in a situation where an object standing on the road, such as a pole, collides with the side of the vehicle 10 at a position away from the rear cross member 14, the load at the time of the collision can be transmitted from the rocker 12 and rear side member 16 to the rear side member 16 via the bracket 18. This allows the rear side member 16 to absorb the energy at the time of the collision.

[0020] The wheelbase of the vehicle 10 may be extended to extend the overlapping section between the rocker 12 and the rear side member 16 in the longitudinal direction of the vehicle. The rocker 12 and the rear side member 16 may be joined to each other.

[0021] The bracket 18 of the trailing arm 40 may be disposed on the rear side member 16, and a reinforcing member different from the bracket 18 may be joined to each of the rocker 12 and the rear cross member 14 at the joining position between the rocker 12 and the rear cross member 14.

[0022] Although specific examples of the present invention have been described in detail above, these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and variations of the specific examples exemplified above. The technical elements described in this specification or drawings exhibit technical utility alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. Furthermore, the technology exemplified in this specification or drawings can achieve multiple objectives simultaneously, and achieving one of these objectives alone is technically useful. [Explanation of symbols]

[0023] 10: vehicle, 12: rocker, 14: rear cross member, 16: rear side member, 18: bracket, 18a: mounting portion, 20: floor panel, 40: trailing arm

Claims

[Claim 1] a rocker extending in the front-rear direction of the vehicle; a cross member joined to a rear end of the rocker and extending in the vehicle width direction; a rear side member joined to the cross member and extending rearward from the cross member; A vehicle comprising: a bracket whose mounting portion for mounting a trailing arm is located forward of the rear side member, the bracket being joined to the rocker, the cross member, and the rear side member.

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