Mounting structure of dust cover in hydraulic shock absorber
AssigneeShowz Corporation
InventorKazuo Wada
Life of this patent
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Abstract
In a mounting structure of a dust cover in a hydraulic shock absorber, a portion continuously provided in an end portion of a portion forming a tubular portion in a metal pipe material of the dust cover is diameter-reduced to an inner diameter side, and an annular diameter-reduced portion including wall portions at both sides is formed. A flange portion obtained by crimping and folding the wall portions at both sides of the diameter-reduced portion in an axial direction according to a press working is formed so as to be continuously provided in an inner diameter side of one end of the tubular portion, and the flange portion is clamped between a mounting bracket and a support member.
Claims5
A mounting structure of a dust cover of a hydraulic shock absorber;
- comprising a dust cover mounted to an outer periphery of a rod member which is slidably inserted to an interior of a cylinder member, a flange portion provided in one end of a tubular portion of the dust cover which is clamped between a mounting bracket provided in the outer periphery of the rod member and support means, an annular gap being formed between an opening in the other end of the tubular portion and the cylinder member,
- a portion continuously provided in an end portion of a portion forming a tubular portion in a metal pipe material of the dust cover is reduced in diameter toward an inner diameter side, to form an annular diameter-reduced portion including wall portions at both sides;
- a flange portion obtained by crimping and folding the wall portions at both sides of the diameter-reduced portion in the dust cover in an axial direction according to a press working is formed so as to be continuously provided in an inner diameter side of one end of the tubular portion;
- wherein
- the flange portion of the dust cover is clamped between the mounting bracket and the support member.
A manufacturing method of a dust cover in a hydraulic shock absorber mounted to an outer periphery of a rod member which is slidably inserted to an interior of a cylinder member, comprising the steps of:
- preparing a metal pipe which is a material for a dust cover;
- rotating the metal pipe material, pressing a roller on an outer periphery of a portion which is continuously provided in an end portion of a portion forming a tubular portion of the dust cover in the pipe material, diameter-reducing the portion which is continuously provided in the end portion of the portion forming the tubular portion in the pipe material to an inner diameter side, and forming an annular diameter-reduced portion including wall portions at both sides;
- and
- forming a flange portion obtained by crimping and folding the wall portions at both sides of the diameter-reduced portion in an axial direction according to a press working so as to be continuously provided in an inner diameter side of one end of the tubular portion.
Dependencies are inferred from the claim text.