JPH0519075U - Car body structure - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a body structure for an automobile, which enhances the mounting rigidity of the trailing arm bracket and thereby prevents vibration of the body. [Structure] An inner end portion of the jack-up reinforcement 12 is extended so that the trailing arm bracket 8,
It is superposed on the front end of 9 and integrated with these by spot welding. Therefore, the trailing arm brackets 8 and 9 are supported not only by the rear floor side member 7 but also by the inner side sill 10. Inner side sill 10 is outer side sill 11
In addition, since the relatively large closed cross section is formed, the mounting rigidity of the trailing arm brackets 8 and 9 is significantly higher than that of the conventional one.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle body structure, and more particularly to a technique for reducing vibration input from a trailing arm to a body.

[0002]

[Prior Art]

 FIG. 3 shows a side view of a passenger car equipped with a torsion axle type three-link rear suspension. In the figure, reference numeral 1 denotes a trailing arm fixed to a rear axle 2, which swings around a pivot pin 4 fixed to the body 3 side. A shock absorber 5 is interposed between the rear axle 2 and the body 3 to cushion and dampen the vertical movement of the rear tire 6. As shown in FIG. 4 (enlarged view of part A in FIG. 3) and FIG. 5 (cross-sectional view taken along the line BB in FIG. 4), a pair of left and right side surfaces of the rear floor side member 7, which is a component of the body 3, The trailing arm brackets 8 and 9 are spot-welded, and the pivot pin 4 penetrates the central portion thereof. Both trailing arm brackets 8 and 9 have their lower ends and rear ends flanged up, and their front ends are respectively bent inward and integrated by spot welding. In the figure, 10 and 11 are an inner side sill and an outer side sill, and an L-shaped jack up reinforcement 12 is spot-welded to the lower surface of the inner side sill 10.

[0003]

[Problems to be solved by the device]

 The conventional body structure described above has the following problems. When driving on a rough road, the tire 6 violently moves up and down, and the trailing arm 1 also swings around the pivot pin 4. At this time, various forces are applied from the trailing arm 1 to the rear floor side member 7 via the trailing arm brackets 8 and 9 to cause a slight flexural deformation. As a result, the body 3 vibrates to make passengers uncomfortable, and the rear floor side member 7 may be fatigued due to long-term use.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a body structure for an automobile, in which the mounting rigidity of the trailing arm bracket is increased, and thus vibration of the body is prevented.

[0005]

[Means for Solving the Problems]

 Therefore, in order to solve this problem, in the present invention, in the body of an automobile in which the trailing arm bracket is located inside the rear jack-up point, the jack-up reinforcement is extended inside and the trailing arm bracket is It was designed to be joined to G.

[0006]

[Action]

 The force input from the trailing arm is also distributed to the side sill, etc. via the jack-up reinforcement, and vibration due to the bending deformation of the trailing arm bracket does not easily occur.

[0007]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an embodiment of a body structure of an automobile according to the present invention in a side view of a main part, and FIG. 2 shows a view of an arrow C in FIG.

As shown in these figures, in this embodiment, the inner end portion of the jack up reinforcement 12 is extended and overlapped with the front end portions of the trailing arm brackets 8 and 9, and they are integrated by spot welding. Has been converted. Therefore, the trailing arm brackets 8 and 9 are supported not only by the rear floor side member 7 but also by the inner side sill 10. Since the inner side sill 10 and the outer side sill 11 form a relatively large closed cross section, the mounting rigidity of the trailing arm brackets 8 and 9 is significantly higher than that of the conventional one.

In this embodiment, by adopting such a structure, the trailing arm brackets 8 and 9 do not easily bend even if various forces are input from the trailing arm 1 during traveling on a rough road, etc. The vibration of the body 3 caused by it almost disappeared.

Although the description of the specific embodiment is finished above, the aspect of the present invention is not limited to this embodiment. For example, in the above embodiment, the jack-up reinforcement 12 is joined to the front end portions of the trailing arm brackets 8 and 9, but it may be joined to the side surface portion or the like. Also, the joining may be performed by a method other than spot welding, such as bolts and nuts or blind rivets.

[0011]

[Effect of the device]

 According to the vehicle body structure of the present invention, since the jack-up reinforcement is extended inward and joined to the trailing arm bracket, the mounting rigidity of the trailing arm bracket is improved and the vibration of the body is prevented. The effect such as is achieved.

[Brief description of drawings]

FIG. 1 is a side view of an essential part showing an embodiment of a vehicle body structure according to the present invention.

FIG. 2 is a view on arrow C in FIG.

FIG. 3 is a side view showing the entire passenger car.

FIG. 4 is an enlarged view of part A in FIG.

FIG. 5 is a view on arrow B in FIG.

[Explanation of symbols]

 1 Trailing arm 2 Rear axle 3 Body 4 Pivot pin 7 Rear floor side member 8, 9 Trailing arm bracket 10 Inner side sill 12 Jack up reinforcement

Claims (1)

[Scope of utility model registration request] 1. In a body of an automobile in which a trailing arm bracket is located inside a rear jack-up point, a jack-up reinforcement is extended inward and joined to the trailing arm bracket. Car body structure