Swaging structure

{
  "publication_number": "US9905382B2",
  "country": "US",
  "kind": "B2",
  "title": "Swaging structure",
  "abstract": "A swaging structure for which swaging process is easy, generation of wrinkles can be prevented, and which has high pressure-resistant performance is provided. In a swaging structure including at least a to-be-swaged member required to have airtightness to a surrounding environment and a swaging member constituted to retain the to-be-swaged member by a swaging processing, the swaging member has an annular side wall surrounding the to-be-swaged member, and a groove is formed in the annular side wall.",
  "claims": [
    "1. A pressure switch comprising: a pressure response member having a diaphragm as a pressure sensing unit stored in a cover member and being formed to communicate with a pressure source, a micro switch having a switch for performing a switching operation based on the pressure sensing of the diaphragm, and a holder member for retaining the pressure response member and the micro switch, wherein: the holder member includes a bulkhead and is formed to retain the micro switch at a first side relative to the bulkhead and to retain the pressure response member by a swaging processing at a second side relative to the bulkhead; and the second side of the bulkhead of the holder member is configured to retain the pressure response member and has a lower annular side wall surrounding the pressure response member, wherein grooves formed in the lower annular side wall are annular grooves provided on an outer diameter side or an inner diameter side of the lower annular side wall, and formed in a plural number at predetermined intervals.",
    "2. The pressure switch according to claim 1, wherein: the plurality of annular grooves of the lower annular side wall are formed on the inner diameter side of the lower annular side wall.",
    "3. The pressure switch according to claim 1, wherein: the plurality of annular grooves of the lower annular side wall are formed on the outer diameter side of the lower annular side wall.",
    "4. The pressure switch according to claim 1, wherein: the plurality of annular grooves of the lower annular side wall have a triangular section.",
    "5. The pressure switch according to claim 1, wherein: the plurality of annular grooves of the lower annular side wall have a rectangular section.",
    "6. A pressure switch comprising: a pressure response member having a diaphragm as a pressure sensing unit stored in a cover member and being formed to communicate with a pressure source, a micro switch having a switch for performing a switching operation based on pressure sensing of the pressure response member, and a holder member for retaining the pressure response member and the micro switch, wherein: the holder member includes a bulkhead and is formed to retain the micro switch at a first side relative to the bulkhead and to retain the pressure response member by a swaging processing at a second side relative to the bulkhead; and the second side of the bulkhead of the holder member is configured to retain the pressure response member and has a lower annular side wall surrounding the pressure response member, wherein the lower annular side wall includes a plurality of rectangular portions each having a thickness that is thinner than a thickness of the lower annular side wall, wherein the plurality of rectangular portions are formed at predetermined intervals.",
    "7. The pressure switch according to claim 6, wherein: the plurality of rectangular portions are formed on an inner peripheral side of the lower annular side wall.",
    "8. The pressure switch according to claim 6, wherein: the plurality of rectangular portions are formed on an outer peripheral side of the lower annular side wall.",
    "9. A pressure switch comprising: a pressure response member having a diaphragm as a pressure sensing unit stored in a cover member and being formed to communicate with a pressure source, a micro switch having a switch for performing a switching operation based on the pressure sensing of the diaphragm, and a holder member for retaining the pressure response member and the micro switch, wherein: the holder member includes a bulkhead and is formed to retain the micro switch by a swaging processing at a first side relative to the bulkhead and to retain the pressure response member by a swaging processing at a second side relative to the bulkhead; and the second side of the bulkhead of the holder member is configured to retain the pressure response member and has a lower annular side wall surrounding the pressure response member, wherein the lower annular side wall includes and a plurality of grooves that are formed by penetrating the lower annular side wall at predetermined intervals wherein a thickness of the lower annular side is thicker than a thickness of an upper annular side that is retaining the micro switch at the first side of the bulkhead by a swaging processing."
  ],
  "description_excerpt": "The present invention relates to a swaging structure, particularly to a swaging structure suitable for a pressure switch for high pressure having a high pressure-resistant performance.\n\nA prior-art pressure switch for high pressure such as a pressure switch for CO2 device and a pressure switch for construction machine mainly includes a switch case, a pressure response member and a holder as illustrated in Patent Literatures 1 and 2. The switch case has a contact portion opened/closed along with pressure detection of the pressure response member. The pressure response member includes a pressure sensing member such as a diaphragm, a rod for transmitting movement of the pressure sensing member to the contact portion of the switch case, and a pressure sensing chamber communicating with a pressure source via a pressure guide pipe. The holder integrally connects the switch case and the pressure response member by a swaging processing, and retains them. In this type of the pressure switch, extremely high pressure-resistant performance is required particularly in retaining of the pressure response member exposed to high pressure. In order to ensure high pressure-resistant performance, an increase of a thickness of an annular side wall of the holder that retains the pressure response member has been usually employed.\n\nPTL 1, Japanese Patent Laid-Open No. 2002-279875\n\nPTL 2, Japanese Patent Laid-Open No.",
  "cpc": [
    "H01H 35/34",
    "F16B 17/004"
  ],
  "ipc": [
    "F16B 17/00",
    "H01H 35/34",
    "H01R 43/048"
  ],
  "assignees": [
    "Saginomiya Seisakusho Inc"
  ],
  "inventors": [
    "Satoshi Miyakawa",
    "Yoshihiro Hamabe"
  ],
  "filing_date": "2014-11-05",
  "publication_date": "2018-02-27",
  "grant_date": "2018-02-27",
  "priority_date": "2013-12-26",
  "application_number": "US-201415039324-A",
  "family_id": "53477884",
  "cited_by_count": 0,
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  ]
}