JP2005186876A - Mounting structure of suspension - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure of a suspension assuring a high sealing performance while the burden with operations is reduced. <P>SOLUTION: The mounting structure is to mount the suspension on a panel member 1 of a vehicle body through a plate-form reinforcing member 2, wherein the panel member 1 and the reinforcing member 2 are joined together in such an arrangement that mounting holes 10 and 11 formed in the members 1 and 2 are overlapped one over the other, and at least the inside surfaces 10a and 11a of the mounting holes joined are welded. The welding process should be of projection type in which a surface unevenness part 13 is formed on at least either of the joining surface 1A in the neighborhood of the mounting hole in the panel member 1 and the joining surface 2A in the neighborhood of the mounting hole in the reinforcing member 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a suspension mounting structure for a vehicle side, and more particularly, to a suspension mounting structure via a reinforcing member.

  A conventional suspension mounting structure is mounted on a panel member on the vehicle body via a plate-shaped reinforcing member in order to ensure mounting rigidity. Mounting holes are formed in the panel member and the reinforcing member, respectively, and a liquid seal member such as a spot sealer is applied to the joint surface in the vicinity of these mounting holes, and both mounting holes are overlapped to spot weld the holes. It is joined with. Examples of the suspension mounting structure using a reinforcing member and laser-welded include those described in Patent Document 1.

JP 2003-137132 A

  However, when the conventional panel member and the reinforcing member on the vehicle body side are joined, water may enter the joining surface. Also in the structure described in Patent Document 1, it is necessary to apply the seal member to the joint surface. If there is uneven application of the seal member, water will not enter the joint surface and rust will occur on the joint surface. Durability may be impaired. In addition, the confirmation of the application state of the seal member is a very important operation for improving the sealing performance, so that the burden on the operator is large and the operation time is required.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a suspension mounting structure that can improve the sealing performance without reducing the work load.

  In order to achieve the above object, according to a first aspect of the present invention, in the suspension mounting structure that is mounted on the panel member on the vehicle body via the plate-shaped reinforcing member, the mounting holes respectively formed in the panel member and the reinforcing member are overlapped. Further, the panel member and the reinforcing member are joined, and at least the inner peripheral surface of the joined mounting hole is welded.

  According to a second aspect of the present invention, in the suspension mounting structure according to the first aspect, an uneven portion is formed on at least one of the joint surface in the vicinity of the mounting hole of the panel member or the joint surface in the vicinity of the mounting hole of the reinforcing member. It is characterized by being joined.

  According to a third aspect of the present invention, in the suspension mounting structure according to the second aspect, the concavo-convex portion is formed by press working.

According to the present invention, the panel member and the reinforcing member are joined so as to superimpose the mounting holes formed in the panel member and the reinforcing member, respectively, and at least the inner peripheral surface of the joined mounting hole is welded. Even if it is not applied, water can be prevented from entering the joint surface from the mounting hole side, and the work load can be reduced, so that the sealing performance can be improved.
According to the present invention, since projection welding is used for welding, it is possible to obtain a better joined state than arc welding even in a narrow part such as a mounting hole, and to ensure higher sealing performance.
According to the present invention, since the concavo-convex portion of the joint surface in the vicinity of the attachment hole is formed by pressing, the concavo-convex portion can be formed at a time, and the work burden can be further reduced.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The suspension mounting structure described in this embodiment is applied to the rear side of the vehicle. In FIG. 1, reference numeral 1 denotes a rear wheel house inner panel (hereinafter referred to as “inner panel”) as a panel member on the vehicle body side. The inner panel 1 is joined to a rear side member (not shown).

  The outer surface 1A, which is a joining surface of the inner panel 1, is joined with a sheet metal lymph absorber 2 as a plate-like reinforcing member on the inner surface 2A side, which is the joining surface. The Lymphers absorber 2 is thicker than the inner panel 1. As shown in FIG. 2, mounting holes 10 and 11 are formed in the inner panel 1 and the Lymphers absorber 2, respectively. These mounting holes 10 and 11 are small holes having a diameter of about 30 to 40 mm, and the inner panel 1 and the phosphorous absorber 3 are joined and integrated so that their positions overlap each other, as shown in FIG. The attachment portion 12 having a high strength is configured.

  As shown in FIG. 1, a mounting bolt 5 formed on an upper portion of a shock absorber 4 constituting a suspension is inserted into the mounting portion 12 from the outer surface 2B side of the phosphorus absorber 2 toward the inner surface 1B of the inner panel 1. The nut 9 is tightened from the inner surface 1B side, and is fixedly attached to the mounting portion 12. Between the nut 9 and the inner panel 1, a cap-shaped cover 8 for interposing a gap between the mounting portion 12 and the mounting bolt 5 is interposed. That is, the shock absorber 4 (suspension) is attached to the inner panel 1 via the lymph absorber 2. Reference numeral 6 denotes a pension spring wound around the outer periphery of the shock absorber 4.

  As shown in FIGS. 2 and 4, an uneven portion 13 is formed on the joint surface 2 </ b> A in the vicinity of the mounting hole 11. The concavo-convex portion 13 is concavo-convex used when performing projection welding, and is formed along the peripheral surface of the mounting hole 11 by pressing.

  As shown in FIG. 3, the Lymphers absorber 2 is positioned in a state where the joining surfaces 1 </ b> A and 2 </ b> A are joined to the inner panel 1 by spot welding the upper end 2 </ b> C and the lower end 2 </ b> D to the inner panel 1. Has been. In the joined state, the mounting holes 10 and 11 are integrated by projecting the inner peripheral surfaces 10a and 11a thereof. A sealer 14 as a seal member is continuously applied to each joint portion between the upper end 2C and the lower end 2D and the inner panel 1 by the edge.

  In this way, the inner panel 1 and the Lymphorth absorber 2 having different thicknesses are joined together by overlapping the mounting holes 10 and 11, and the inner peripheral surfaces 10a and 11a of the mounting holes 10 and 11 having a small diameter are projected. By welding, the sealing performance on the mounting holes 10 and 11 side, that is, the mounting portion 12 side is ensured without applying a sealing member to the joining surface 1A or 2A as in the conventional case. Infiltration of water is prevented. For this reason, the sealing performance can be improved without reducing the work load.

  In general, when projection welding is performed, it takes time to form the concavo-convex portion on the joint surface, but in this embodiment, since it is formed at one time by pressing, the labor is reduced and the work load can be further reduced. In this embodiment, the concavo-convex portion 13 is formed on the joint surface 2A in the vicinity of the attachment hole 11 of the Linface absorber 2, but may be formed on the joint surface 1A in the vicinity of the attachment hole 10 of the inner panel 1.

It is sectional drawing which shows the attachment structure of the suspension which shows one embodiment of this invention. It is an expanded sectional view which shows the structure of an inner panel and a reinforcement member. It is the perspective view which looked at the state which joined the inner panel and the reinforcement member from the reinforcement member side. It is a top view which shows the structure of an uneven | corrugated | grooved part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car body side panel member 1A, 2A Joint surface 2 Plate-shaped reinforcement member 4 Suspension 10,11 Mounting hole 10a, 11a Inner peripheral surface 13 Concavity and convexity

Claims (3)

In the suspension mounting structure that is mounted on the panel member on the vehicle body via a plate-shaped reinforcing member,
Suspension characterized in that the panel member and the reinforcing member are joined so that the mounting holes formed in the panel member and the reinforcing member are superposed, and at least the inner peripheral surface of the joined mounting hole is welded. Mounting structure. The suspension mounting structure according to claim 1,
A suspension mounting structure, wherein an uneven portion is formed on at least one of a joint surface in the vicinity of the mounting hole of the panel member or a joint surface in the vicinity of the mounting hole of the reinforcing member, and the suspension is joined by projection welding. In the suspension mounting structure according to claim 2,
The suspension mounting structure, wherein the uneven portion is formed by press working.

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