US 5,882,048 A · Hose connecting structure · patentgrep

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Abstract

A hose connecting structure includes a hose whose central and engaging portion having a thermal flexibility resin which is molded by a blow molding method and a mating member which is inserted into the edge opening of the hose. The hose connecting structure further includes a ring-shaped sealing material and a first engaging portion which is disposed in the axial direction by a predetermined distance to the sealing material at either the edge portion of the hose or the mating member and a second engaging portion which is directly or indirectly engaged with the first engaging portion at either the edge portion of the hose or the mating member. Since the central and the engaging portion of the hose connecting structure includes a thermal flexibility resin which is molded by a blow molding method, the most suitable soft and hard resin for the appropriate portion can be used. When the engaging portion with the mating member and the central portion are molded integrally, the working efficiency is improved. The sealing material such as an O-ring is used for the engaging surface. Therefore, soft resin is not used for the engaging surface, and a free selection of resin is achieved. Moreover, the polishing of the engaging surface is not required.

Claims33

Dependent claims

A hose connecting structure comprising:

a molded hose integrally including a central portion and an edge portion having an opening end formed of a thermoplastic resin,
a mating member connected to said edge portion of safe hose by insertion,
an engaging surface of said edge portion contacting said mating member, said engaging surface of said edge portion being one of an outer peripheral surface of said edge portion and an inner peripheral surface of said edge portion;
a ring-shaped sealing groove encircling said engaging surface, said ring-shaped sealing groove being simultaneously molded with said engaging surface,
a ring-shaped sealing material held in said ring-shaped sealing groove between said edge portion and said mating member,
a first engaging portion mounted on said outer periphery of said edge portion spaced from said opening end by a predetermined distance and being a separate element from said edge portion, the first engaging portion being made of a thermoplastic resin in a single piece and including a ring shaped base part mounted on the edge portion, a plurality of claw parts to be engaged with a part of the mating member, and a plurality of arm parts connecting the base part and the claw parts and elastically supporting the claw parts, and
said mating member having a second engaging portion which is engaged with said first engaging portion to connect said edge portion of said hose and said mating member to each other.

4 more elements

A hose connecting structure comprising:

a hose comprising a thermoplastic resin and which is molded by a molding method, said hose having a sealing groove which encircles an outer periphery surface of an edge portion of said hose, a projection which encircles an inner periphery surface of said edge portion, located opposed to said sealing groove on said outer periphery surface, and a first engaging portion which is disposed at said edge portion in the axial direction at a predetermined distance from said sealing groove and which extends in a circumferential direction, the first engaging portion being made of a thermoplastic resin in a single piece and including a ring shaped base part mounted on the edge portion, a plurality of claw parts to be engaged with a part of said mating member, and a plurality of arm parts connecting the base part and the claw parts and elastically supporting the claw parts;
a ring-shaped sealing material which is held in said sealing groove;
and
a mating member having an opening edge portion, said opening edge portion having a sealing surface as an inner periphery surface into which said edge portion of said hose is inserted and to which said sealing material is contacted and a second engaging portion of the mating member which is engaged with said first engaging portion.

1 more element

A hose connecting structure comprising:

a hose comprising a thermoplastic resin and which is molded by a molding method, said hose having a sealing groove which encircles an outer periphery surface at one side, in an axial direction, of an edge portion, a projection which encircles an inner periphery surface, located opposed to said sealing groove on said outer periphery, at said one side, in said axial direction, of said edge portion and a first engaging portion which is disposed at a side opposite to said one side of said edge portion, in said axial direction, with a predetermined distance to said sealing groove, the first engaging portion being made of a thermoplastic resin in a single piece and including a ring shaped base part mounted on the edge portion, a plurality of claw parts to be engaged with a part of said mating member, and a plurality of arm parts connecting the base part and the claw parts and elastically supporting the claw parts;
a ring-shaped sealing material which is held to said sealing groove;
and
a mating member having an opening edge portion, said opening edge portion having a sealing surface as an inner periphery surface into which said edge portion of said hose is inserted and to which said sealing material is contacted and a second engaging portion of the mating member which is engaged with said first engaging portion.

1 more element

A hose connecting structure comprising:

a molded hose integrally including a central portion and an edge portion having an opening end formed of a thermoplastic resin,
a mating member connected to said edge portion of said hose by insertion,
an engaging surface of said edge portion contacting said mating member, said engaging surface of said edge portion being one of an outer peripheral surface of said edge portion and an inner peripheral surface of said edge portion;
a ring-shaped sealing groove encircling said engaging surface, said ring-shaped sealing groove being simultaneously molded with said engaging surface,
a ring-shaped sealing material held in said ring-shaped sealing groove between said edge portion and said mating member,
a first engaging portion fixed on said outer periphery of said edge portion spaced from said opening end by a predetermined distance and being formed separately from said edge portion, and
said mating member having a second engaging portion which is engaged with said first engaging portion to connect said edge portion of said hose and said mating member to each other,
said edge portion of said hose having first backlash prevention comprising projection portions which are elastically defined by said engaging surface.

5 more elements

A hose connecting structure comprising:

a hose comprising a thermoplastic resin and which is molded by a molding method, said hose having a sealing groove which encircles an outer periphery surface at one side, in an axial direction, of an edge portion, a projection which encircles an inner periphery surface, located opposed to said sealing groove on said outer periphery, at said one side, in said axial direction, of said edge portion and a first engaging portion which is disposed at a side opposite to said one side of said edge portion, in said axial direction, with a predetermined distance to said sealing groove;
a ring-shaped sealing material which is held to said sealing groove;
and
a mating member having an opening edge portion, said opening edge portion having a sealing surface as an inner periphery surface into which said edge portion of said hose is inserted and to which said sealing material is contacted and a second engaging portion which is engaged with said first engaging portion,
said edge portion of said hose having backlash prevention means comprising projection portions elastically deformed by said engaging surface of said mating member and projecting from said engaging surface.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/950,677Filed 15 Oct 1997 · continuation
Priority: JP 4-16410130 May 1992
Granted: 16 Mar 1999
Term ends: Not estimatedThe source records don’t support an estimate.

Classification23 codes

B29C 49/20
Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor: of articles having inserts or…
B29C 49/04102
Extrusion blow-moulding: extruding the material continuously
B29C 49/0411
Extrusion blow-moulding: means for defining the wall or layer thickness
F02M 35/10144
Characterised by details of intake ducts: shapes; connections; arrangements: connections of intake ducts to each other or to another device

Family

Serial68,710Parent of this continuation · filed 28 May 1993
Serial570,825Parent of this continuation · filed 12 Dec 1995
Serial746,252Parent of this continuation · filed 7 Nov 1996
US 5,882,048 AThis patent

From the US filing history. Foreign family members aren’t listed.

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