Shock absorber

Patent metadata

Field	Value
Publication number	US-12337638-B2
Application number	US-202117924584-A
Country	US
Kind code	B2
Filing date	May 6, 2021
Priority date	Jul 6, 2020
Publication date	Jun 24, 2025
Grant date	Jun 24, 2025

Abstract

A shock absorber according to the present invention includes: a shock absorber main body having an outer shell and a rod; and a knuckle bracket attached to an outer circumference of the bottom end of the outer shell. The knuckle bracket includes: a holding portion having a cylindrical shape with a C-shaped cross section, and that holds the outer circumference of the outer shell; a pair of attachment portions extending radially outwards, and in parallel with each other, from respective circumferential ends of the holding portion; and reinforcing portions formed by bending top ends of the attachment portions in directions approaching each other; and a C-shaped welded portion having a C-shaped surface that is formed by top ends of the reinforcing portions and a top end of the holding portion, the C-shaped welded portion being formed by welding the C-shaped surface to the outer shell, across a range from a position spaced from one circumferential end of the C-shaped surface, traversing across an upper part of a rear side of the holding portion, to the other circumferential end of the C-shaped surface.

First claim

The invention claimed is:

1. A shock absorber comprising:
a shock absorber main body having an outer shell and a rod that is movably inserted into the outer shell; and
a knuckle bracket attached, by welding, to an outer circumference of a bottom end of the outer shell, wherein
the knuckle bracket includes: a holding portion that has a cylindrical shape with a C-shaped cross section with a split on a front side, and that holds an outer circumference of the outer shell; a pair of attachment portions that extend radially outwards, and in parallel with each other, from two respective circumferential ends of the holding portions, and that are able to be coupled to a knuckle in a vehicle; and reinforcing portions formed by bending top ends of the attachment portions, in a direction approaching each other, and that holds the outer circumference of the outer shell together with the holding portion; and a C-shaped welded portion having a C-shaped surface that is formed by top ends of the reinforcing portions and a top end of the holding portion, and that is to be welded along an outer circumference of the outer shell, the C-shaped welded portion being formed by welding the C-shaped surface to the outer shell, across a range from a position spaced from one circumferential end of the C-shaped surface, traversing across an upper part of a rear side of the holding portion, to another circumferential end of the C-shaped surface.

2. The shock absorber according to claim 1 , wherein
the welded portion is formed by welding the C-shaped surface to the outer shell across a range from a position spaced from one circumferential end of the C-shaped surface, traversing across an upper part of the holding portion, to a position spaced from the other circumferential end.

3. The shock absorber according to claim 2 , wherein
in a view of the knuckle bracket from a front side in a direction facing the attachment portion, the welded portion is formed from a start point at a point of intersection between the C-shaped surface and a line extended from one of the attachment portions as a start point, to a point of intersection between the C-shaped surface and a line extended from another one of the attachment portions, as an end point.

4. The shock absorber according to claim 2 , wherein
a gap between the C-shaped surface and the outer shell is wider at two circumferential ends of the C-shaped surface than that across the range from the position spaced from the one circumferential end of the C-shaped surface, traversing across the upper part of the holding portion on the rear side, and to the position spaced from the other circumferential end.

5. The shock absorber according to claim 1 , wherein
the welded portion is formed by welding the C-shaped surface and the outer shell across a range from a position spaced by 5 mm or more and 10 mm or less from the one circumferential end of the C-shaped surface, traversing across the upper part of the holding portion on the rear side, and to a position spaced by 5 mm or more and 10 mm or less from the other circumferential end.

Assignees

• Kyb Corp

Inventors

• Ando Kazuma
• Kimizu Tomohiro

Classifications

• B60G2206/8201

  by welding · CPC title

• B60G2206/41

  Dampers · CPC title

• B60G2204/4304

  Bracket for lower cylinder mount of McPherson strut · CPC title

• B60G2204/129

  Damper mount on wheel suspension or knuckle · CPC title

• B60G2202/24

  Fluid damper · CPC title