JP2001233237A - Connecting structure for rear suspension tower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecting structure for a rear suspension tower capable of improving rigidity effectively and properly. SOLUTION: A tower bar 5 is laterally arranged between left and right rear suspension towers 2 so as to connect them to each other. The tower bar 5 is provided with auxiliary bars 6 connected to a rear floor 3 side. The auxiliary bar 6 is connected to a cross member 4 on the rear floor 3. The tower bar 5 and the auxiliary bars 6 are integrated into a trapezoidal shape substantially. The auxiliary bar 6 is directly connected to the cross member 4 by fastening a bolt. Rigidity around a rear suspension including an under body is greatly increased, and operating stability can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure of a rear suspension tower in a vehicle such as a passenger car.

[0002]

2. Description of the Related Art FIG. 10 shows an example of a coupling structure around a rear suspension tower in a vehicle of this type.
10, 1 is a rear tire, 2 is a rear suspension tower, 3 is a rear floor, 4 is a rear cross member, and 5 is a tower bar.

[0003] As shown in FIG. 10, a rear suspension tower 2 is disposed above each of the rear tires 1.
The lower portion of the rear suspension tower 2 is connected to the rear floor 3 or the rear cross member 4. As shown in the drawing, a tower bar 5 is suspended between the left and right rear suspension towers 2, and the rear suspension towers 2 are connected to each other by the tower bar 5.

[0004]

Conventionally, as shown in FIG. 10, a straight tower bar 5 has been used. However, in the connection structure of the rear suspension tower 2, for example, especially in a vehicle having no upper back, it is difficult to secure the rigidity as it is. Also, it is difficult to transmit an input between the rear suspension towers 2 to an underbody such as the rear floor 3.

The present invention has been made in view of the above circumstances, and has as its object to provide a coupling structure of a rear suspension tower that can effectively and appropriately improve rigidity.

[0006]

According to the present invention, there is provided a rear suspension tower connecting structure in which a tower bar is suspended between left and right rear suspension towers, and the rear suspension towers are connected to each other by the tower bar. A coupling structure, wherein the tower bar has an auxiliary bar coupled to a rear floor side.

In the connecting structure of a rear suspension tower according to the present invention, the auxiliary bar is connected to a cross member of a rear floor. Preferably, the tower bar and the auxiliary bar can be integrated into a substantially trapezoidal shape.

[0008] Preferably, the auxiliary bar is directly bolted to the cross member and connected to the cross member. Alternatively, the auxiliary bar may be coupled to the cross member via a bracket that is bolted to the cross member. Alternatively, the auxiliary bar may be connected to the cross member by bolting via a collar.

Further, the cross member may be provided with a mounting retainer at a connecting portion of the auxiliary bar.

According to the present invention, the tower bar and the auxiliary bar which have the auxiliary bar connected to the rear floor side and are integrated in a substantially trapezoidal shape are set between the left and right rear suspension towers. By connecting the auxiliary bar to the cross member of the rear floor, which is the underbody, the rigidity around the rear suspension including the underbody can be greatly increased.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, members that are substantially the same as or correspond to those of the prior art will be denoted by the same reference numerals.
A preferred embodiment of the coupling structure of the rear suspension tower according to the present invention will be described. FIG. 1 shows an example of a coupling structure around a rear suspension tower according to the first embodiment of the present invention. In this embodiment, the basic structure is substantially the same as that of the conventional example (FIG. 7).
Therefore, the lower part of the rear suspension tower 2 arranged on the upper part of the rear tire 1 is connected to the rear floor 3 or the rear cross member 4. Then, a tower bar 5 is suspended between the left and right rear suspension towers 2.

In the present invention, the tower bar 5 has an auxiliary bar 6 connected to the rear floor 3 side. This auxiliary bar 6
Is combined with the cross member 4 of the rear floor 3 as described later, but is integrated with the tower bar 5 in a substantially trapezoidal shape.
The auxiliary bar 6 is formed in a pipe shape, and upper ends 6a are connected to the tower bar 5 by welding or the like.

Further, in the rear suspension tower connecting structure of the present invention, the auxiliary bar 6 is fastened to the cross member 4 directly by the bolt 7. In this case, FIG.
A part of the auxiliary bar 6 is crushed into a concave shape as shown in FIG. In this example, two right and left bolts 7 are used and fastened with nuts 9 (FIG. 3) using washers 8. Note that a flanged bolt or the like may be used without using the washer 8.

As shown in FIG. 3, when the auxiliary bar 6 is fastened to the cross member 4 by bolts, it is preferable to use a mounting retainer 10 at the joint of the auxiliary bar 6 and to interpose the auxiliary bar 6 therebetween.
Although the mounting retainer 10 is joined to the cross member 4 by welding or the like, the provision of the retainer 10 can increase the bonding strength.

In the above configuration, the tower bar 5 and the auxiliary bar 6 integrated in a substantially trapezoidal shape are set between the left and right rear suspension towers 2. Thus, the auxiliary bar 6
Is bolted to the cross member 4 so that the rigidity around the rear suspension including the underbody can be greatly increased. Further, by adopting such a coupling structure, a load input between the rear suspension towers 2 can be effectively transmitted to the underbody. further,
By improving the rigidity of the rear underbody and adjusting the load balance, it is possible to improve the steering stability during running of the vehicle.

Next, a description will be given of a second embodiment of the connection structure of the rear suspension tower according to the present invention. FIG.
6 to 6 show examples of the connection structure around the rear suspension tower in the second embodiment of the present invention. In this embodiment, the configuration in which the auxiliary bar 6 is integrated with the tower bar 5 in a substantially trapezoidal shape as shown in FIG. 4 and is connected to a predetermined portion of the cross member 4 of the rear floor 3 is the same as in the first embodiment.

In the second embodiment, the auxiliary bar 6 is connected to the cross member 4 via a bolted bracket 11. The bracket 11 is formed in a key shape as shown in FIG. 5 or FIG. The upper portion 11a of the bracket 11 is joined to the auxiliary bar 6 by welding or the like, and its base 11b is fastened to the cross member 4 (the mounting retainer 10) by the bolt 7.

Also in the second embodiment of the present invention, the tower bar 5 and the auxiliary bar 6 integrated in a substantially trapezoidal shape are set between the left and right rear suspension towers 2, and the auxiliary bar 6 is bolted to the cross member 4. By doing so, the rigidity around the rear suspension including the underbody can be significantly increased. Further, the load input between the rear suspension towers 2 is effectively transmitted to the underbody, and also in this case, the steering stability can be improved.

Next, a third embodiment of the connection structure of the rear suspension tower according to the present invention will be described. FIG.
FIG. 9 shows an example of a coupling structure around a rear suspension tower according to the second embodiment of the present invention. In this embodiment, as shown in FIG. 7, the configuration in which the auxiliary bar 6 is integrated with the tower bar 5 in a substantially trapezoidal shape and is coupled to a predetermined portion of the cross member 4 of the rear floor 3 is the same as that of the first embodiment.

In the third embodiment, the auxiliary bar 6 is connected to the cross member 4 by bolting via the collar 12. In this case, as shown in FIG. 8, a through hole is formed in the setting portion 6b of the auxiliary bar 6, and the collar 12 is formed in the through hole.
Embed Then, as shown in FIG. 9, the bolt 7 is inserted through the collar 12 and fastened with the nut 9, thereby connecting the auxiliary bar 6 to the cross member 4 (retaining retainer 10).

Also in the third embodiment of the present invention, the rigidity around the rear suspension including the underbody is greatly increased similarly to the above-described embodiments, and the load input between the rear suspension towers 2 is effectively reduced. To improve the steering stability.

In each of the above embodiments, examples have been described in which the tower bar 5 and the auxiliary bar 6 are formed in a substantially trapezoidal shape. However, the tower bar 5 and the auxiliary bar 6 are not limited to the shapes in the illustrated example. Is also good. Further, the number of bolts 7 to be used and the like is not limited to the case of two bolts, and can be appropriately changed as needed. Further, instead of the bolt 7, an appropriate position of the auxiliary bar 6 may be joined to the cross member 4 by welding or the like.

[0023]

As described above, according to the present invention,
By setting the tower bar integrated into a roughly trapezoidal shape between the left and right rear suspension towers, the rigidity around the rear suspension including the underbody can be greatly increased, and the steering stability can be further improved. This has advantages such as contributing to ensuring traveling safety while having a relatively simple configuration.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an example of a coupling structure around a rear suspension tower according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a main part showing an example of a configuration of connecting an auxiliary bar to a cross member according to the first embodiment of the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a diagram illustrating an example of a coupling structure around a rear suspension tower according to a second embodiment of the present invention.

FIG. 5 is a perspective view of a main part showing an example of a connection configuration of an auxiliary bar to a cross member according to a second embodiment of the present invention.

FIG. 6 is a sectional view taken along line BB of FIG. 4;

FIG. 7 is a diagram illustrating an example of a coupling structure around a rear suspension tower according to a third embodiment of the present invention.

FIG. 8 is a perspective view of a main part showing an example of a configuration of connecting an auxiliary bar to a cross member according to a third embodiment of the present invention.

FIG. 9 is a sectional view taken along the line CC of FIG. 4;

FIG. 10 is a view showing an example of a conventional coupling structure around a rear suspension tower.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rear tire 2 Rear suspension tower 3 Rear floor 4 Rear cross member 5 Tower bar 6 Auxiliary bar 6a Both ends of an auxiliary bar 7 Bolt 8 Washer 9 Nut 10 Retainer 11 Bracket 12 Collar

Claims (7)

[Claims] 1. A connecting structure of a rear suspension tower in which a tower bar is suspended between left and right rear suspension towers and the rear suspension towers are connected to each other by the tower bar, wherein the tower bar is connected to a rear floor side. A connecting structure for a rear suspension tower, characterized by having an auxiliary bar to be moved. 2. The structure according to claim 1, wherein the auxiliary bar is connected to a cross member of a rear floor. 3. The structure according to claim 1, wherein the tower bar and the auxiliary bar are integrated into a substantially trapezoidal shape. 4. The cross bar according to claim 4, wherein the auxiliary bar is directly bolted to the cross member.
A coupling structure for a rear suspension tower according to claim 1. 5. The connection structure according to claim 1, wherein the auxiliary bar is connected to the cross member via a bolted bracket. 6. The connecting structure of a rear suspension tower according to claim 1, wherein the auxiliary bar is connected to the cross member by bolting via a collar. 7. The rear suspension tower coupling structure according to claim 2, wherein a mounting retainer is provided at a coupling portion of the auxiliary bar in the cross member.