Joint
AssigneeDaikin Industries, Ltd.
InventorsNobuo Domyo, Hajime Kurata, Shogo Ota
Life of this patent
Estimating the term…
Abstract
A joint for bringing into communication a first fluid passageway and a second fluid passageway of a nut member includes a push rod and a main body. The main body forms a push rod storage space, a communication path, a seal structure forming part and a male thread part. The push rod storage space houses the push rod so that one part of the push rod protrudes along a push rod longitudinal direction. The seal structure forming part is capable of forming a seal structure by contacting a first tapered part of the nut member. The male thread part is capable of screwing together with a female thread part of the nut member such that the seal structure forming part contacts the first tapered part. The part of the portion of the push rod contacts one part of the nut member.
Claims20
A joint comprising:
- a push rod having a protruding portion;
- and
- a main body having
- an upper end and a lower end spaced in a push rod longitudinal direction, said protruding portion of said push rod protruding along said push rod longitudinal direction from said upper end of said main body,
- a push rod storage space being formed in said main body, said push rod storage space housing said push rod,
- a communication path being formed in said main body at said lower end,
- a seal structure forming part being formed on an outer circumference of said main body at said upper end, and
- a male thread part being configured to thread together with a female thread part of a nut member along the push rod longitudinal direction,
- said seal structure forming part surrounding said push rod storage space and being configured to form a seal structure by directly contacting a first tapered part of the nut member when said female thread part and said male thread part are threaded together,
- a portion of said protruding portion being configured to contact a part of said nut member when installed, said push rod being movable toward said lower end of said main body along the push rod longitudinal direction to communicate with a fluid passageway of said nut member and said communication path.
A joint comprising:
- a push rod having a protruding portion;
- a main body having
- an upper end and a lower end spaced in a push rod longitudinal direction, said protruding portion of said push rod protruding along said push rod longitudinal direction from said upper end of said main body,
- a push rod storage space being formed in said main body, said push rod storage space housing said push rod,
- a communication path being formed in said main body at said lower end,
- a seal structure forming part being formed on an outer circumference of said main body at said upper end, and
- a male thread part,
- said seal structure forming part surrounding said push rod storage space and being configured to form a seal structure by directly contacting a first tapered part of a piping;
- and
- a nut member including
- a female thread part selectively threaded with said male thread part along the push rod longitudinal direction,
- a second tapered part inclined toward an outer circumferential side and toward a female thread part side, and
- an opening being formed in said nut member to insert the piping,
- said seal structure forming part and said second tapered part being configured to sandwich and to press a portion of said first tapered part of the piping in a state in which said female thread part and said male thread part are screwed together and the piping is inserted in said opening of said nut member so that said first tapered part directly contacts said second tapered part, and said protruding portion directly contacts another portion of the first tapered part,
- said push rod being movable toward said lower end of said main body along the push rod longitudinal direction to communicate with a fluid passageway and said communication path.
Dependencies are inferred from the claim text.