US 12,546,377 B2Granted

Shock absorber

AssigneesHitachi Astemo, Ltd., Honda Motor Co., Ltd.

InventorsNao Kadota, Yuka Kubotera, Takashi Nakagawa, Dustin M. Schroeder, Masayuki Tsutsui

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Abstract

A shock absorber includes a cylinder, a sleeve provided so as to surround the outer circumferential surface of the cylinder, the cylinder formed of a different material from a material for the cylinder, first and second springs provided along the outer circumferential surface of the sleeve, and a slider provided between the first spring and the second spring, and capable of being displaced in an axal direction. The materials for the cylinder and the sleeve are a combination of materials that causes corrosion due to a contact of either one of those with the other one of those. A corrosion inhibitor is provided which suppresses an occurrence of corrosion on the cylinder or on the sleeve. In one embodiment, the materials are metals.

Claims11

Dependent claims

A shock absorber comprising:

a cylinder which is formed in a substantially cylindrical shape, and which is formed of a metal;
a sleeve which is formed in a substantially cylindrical shape, provided so as to surround an outer circumferential surface of the cylinder, and is formed of a different metal from the metal of the cylinder;
first spring and second spring that are two springs provided along an outer circumferential surface of the sleeve;
and
a slider which is provided between the first spring and the second spring, receives pushing forces from both the first spring and the second spring, and is capable of being displaced along the outer circumferential surface of the sleeve,
wherein the metal applied for the cylinder and the metal applied for the sleeve are a combination of metals that causes bimetalic corrosion due to a contact of either one of the cylinder or the sleeve with the other one of the sleeve or the cylinder, and
wherein a corrosion inhibitor is provided which suppresses an occurrence of the bimetalic corrosion on the cylinder or on the sleeve,
wherein:
respective-end-part sealing members which seal a region between the cylinder and the sleeve are provided at respective ends of a section where the cylinder and the sleeve overlap with each other;
and
two corrosion inhibitors are formed by the respective-end-part sealing members, respectively.

8 more elements

A shock absorber comprising:

a cylinder;
a sleeve provided so as to surround an outer surface of the cylinder, the sleeve formed from a different material from a material of the cylinder, the combination of materials capable of causing corrosion due to a contact of either one of the cylinder and the sleeve with the other one of the sleeve and the cylinder;
first and second springs provided along an outer surface of the sleeve;
a slider provided between the first and second springs, receiving pushing forces from both the first and second springs, and capable of being displaced along an outer circumferential surface of the sleeve;
and
a corrosion inhibitor provided to suppress an occurrence of the corrosion on the cylinder or sleeve,
wherein end-part sealing members are located at each of opposite ends of an overlapping section of the cylinder and the sleeve;
and each of the end part sealing members forms a corrosion inhibitor.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/299,817Filed 13 Apr 2023
Published: US 2024/0344587 A117 Oct 2024
Granted: 10 Feb 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

F16F 13/007
Comprising both a wound spring and a damper, e.g. a friction damper: the damper being a fluid damper
B60G 15/063
The spring being arranged around the damper: characterised by the mounting of the spring on the damper
F16F 3/04
With springs made of steel or of other material having low internal friction: composed only of wound springs
F16F 9/3235
Constructional features: of cylinders