Silencer for a multi-leaf spring

Abstract

Disclosed is a silencer for a multi-leaf spring whereby both the strength of a protruding part is increased and anomalous noises are prevented, and a component count is reduced due to structural simplification and increased ease of manufacture. Said silencer (1), which is disposed between the ends of leaf springs (101 and 102) in a multi-leaf spring (100), has a two-layer structure comprising a fixed layer (11) and a sliding layer (21) formed as a single unit. The fixed layer (11) has a protruding part (12) with an engagement part (13) formed in the tip thereof. The fixed layer (11), which is affixed to a fixed-side leaf spring (101), has a higher tensile strength than the sliding layer (21). The sliding layer (21), which abuts against a sliding-side leaf spring (102), is harder than the fixed layer (11). The protruding part (12) of the fixed layer (11) can exhibit sufficient strength with respect to shear forces. The sliding layer (21) is not prone to anomalous noises and can even minimize anomalous noises when a load-transmission part of the end of the sliding-side leaf spring (102) makes off-center contact.

Description

technical field [0001] The present invention relates to a muffler for laminated leaf springs, and more particularly to an improvement in the muffler structure for improving various characteristics. Background technique [0002] In a laminated leaf spring used in a vehicle suspension such as an automobile, a plurality of leaf springs are stacked, and U-shaped bolts sandwiching the leaf springs are assembled from, for example, the upper side of the central portion in the longitudinal direction. In this case, for example, a spacer is provided between the leaf springs in the center portion in the longitudinal direction, for example, a spacer is provided between the uppermost leaf spring and the U-bolt. In the laminated leaf spring, both ends of the U-bolt are fastened to a mandrel arranged below the lowermost leaf spring. [0003] In such a laminated leaf spring, a muffler is provided between both ends of the leaf springs in the longitudinal direction. The muffler is used to p...

AI Technical Summary

Problems solved by technology

[0010] However, in the technology of Patent Document 1, it is necessary to install the reinforcement fitting inside the muffler as a separate part, and the manufacturing process becomes complicated.

In addition, in the technique of Patent Document 2, since two mufflers are provided between the leaf springs, the number of parts increases.

In addition, in order to achieve both the improvement of the strength of the protrusion and the prevention of abnormal noise, the above-mentioned problems occur at the same time.

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