Western Digital Technologies, Inc.

Hgst Netherlands, B.v.

Nidec Corporation

West Digital Technologies, Inc.

Yuta Onobu

Kimihiko Sudo

Takako Hayakawa

Seong-Hun Choe

Takehito Nagata

Nobumasa Nishiyama

Kazuhiro Nagaoka

Yuichi Arai

Jiro Kaneko

Yuji Soga

Hajime Eguchi

Kyosuke Yoshida

Tomohiro Yoneda

Masahiro Akagi

Takeshi Ohiro

Akihiro Yudate

Takayuki Ishino

Naoshi Mizumoto

Sho Nakamura

Kazuki Takeichi

An electrical feed-through, such as a PCB connector, involves at least one positioning protrusion protruding from a main body, and may further include multiple positioning protrusions protruding in respective directions from the main body. A data storage device employing such a feed-through includes an enclosure base with which the feed-through is coupled. The base includes an annular recessed surface surrounding an aperture that is encompassed by the feed-through and is at a first level, and at least one recessed positioning surface at a higher level than the first level, and extending in a direction away from the annular recessed surface. The positioning protrusion of the electrical feed-through contacts the recessed positioning surface of the base, such that the position of the feed-through is constrained by the recessed positioning surface.

Sealed bulkhead electrical feed-through positioning control

An electrical feed-through, such as a PCB connector, involves at least one positioning protrusion protruding from a main body, and may further include multiple positioning protrusions protruding in respective directions from the main body. A data storage device employing such a feed-through comprises an enclosure base with which the feed-through is coupled, where the base comprises an annular recessed surface surrounding an aperture that is encompassed by the feed-through and is at a first level, and at least one recessed positioning surface at a higher level than the first level and extending in a direction away from the annular recessed surface. The positioning protrusion of the electrical feed-through physically mates with the recessed positioning surface of the base, such that the position of the feed-through is vertically constrained by the recessed positioning surface.

Embodiments disclosed herein generally relate to hermetic electrical connectors used in hard disk drives. The hermetic electrical connector includes a barrier structure having a first plurality of connecting pads disposed on a first surface of the barrier structure and a second plurality of connecting pads disposed on a second surface of the barrier structure opposite the first surface. A plurality of conductors is disposed within the barrier structure, and each conductor is coupled to a connecting pad of the first plurality of connecting pads and a corresponding connecting pad of the second plurality of connecting pads. The barrier structure further includes a dielectric material between the first and second surfaces, and one or more layers embedded in the dielectric material. The addition of the layers helps choke the helium gas flow, thus improving sealing of the electrical connector while maintaining high-speed electrical transmission.

Hermetic sealed electrical connector with high-speed transmission for hard disk drive

A base member includes a recessed portion extending in radial directions and recessed upward from a lower surface of the base member, and a hole extending through the recessed portion in the vertical direction. The recessed portion includes a recessed portion loop-shaped surface defining a loop-shaped surface in the radial direction. A connector is located on a lower side of the recessed portion to cover the hole portion. An adhesive is located between the connector and the recessed portion. A minimum value of a gap distance in the radial direction between an outer end of the connector and an inner end of the recessed portion in which the outer end of the connector and the inner end of the recessed portion are opposed to each other with the adhesive therebetween is greater than a minimum value of a gap in the vertical direction distance between an upper surface of the connector and the recessed portion loop-shaped surface, in which the upper surface of the connector and the recessed portion loop-shaped surface are opposed to each other with the adhesive therebetween. The adhesive includes a filler.

Base unit and disk drive apparatus

An electrical feed-through assembly includes electrically conductive pins having a top apex and a bottom apex, where the pins extend through at least a majority of an electrically non-conductive material. The top apexes, the bottom apexes, or both the top and bottom apexes of the pins have an electrically conductive connection pad material, such as a solder pad, coupled thereto. In variations, the top and/or bottom apexes may be slightly recessed from a corresponding surface of the non-conductive material, such that the connection pads fill the respective recesses; and/or the top and/or bottom apexes barely extend from a corresponding surface, such that the connection pads bulge out from the corresponding surface. Such a feed-through configuration may inhibit pin bending, in addition to enabling use of more types of connectors beyond pin-and-socket type connectors.

Electrical feed-through and connector configuration

A device is disclosed herein. The device comprises a housing, a gas, an antenna, and a control module. The housing defines and hermetically seals an interior cavity. The gas is contained within the interior cavity of the housing at a pressure greater than atmospheric pressure. At least a portion of the antenna is within the interior cavity of the housing. The control module is operably coupled with the antenna to transmit an incident radio wave into the interior cavity of the housing and receive a reflected radio wave within the interior cavity of the housing. The control module is configured to determine a resonance frequency of the interior cavity of the housing based on, at least partially, the reflected radio wave, and determine the pressure of the gas contained within the interior cavity of the housing based on, at least partially, the resonance frequency of the interior cavity of the housing.

Pressure detection of hermetically sealed device

Hermetic sealing with high-speed transmission for hard disk drive

In the context of a hard disk drive (HDD), an adhesive leak channel structural feature is positioned in an area at which an electrical feed-through is adhered with an adhesive to an enclosure base, where the leak channel feature inhibits the leakage of gas through the adhesive. Embodiments include providing the leak channel feature on the base and/or on the feed-through. Embodiments may further include application of an electrodeposition coating to the base in an area at which the adhesive is in contact.

Adhesive leak channel structure for hermetic sealing of a hard disk drive

A hermetically-sealed hard disk drive (HDD) utilizes a laminated film seal to seal an interface of an electrical feed-through connector and an HDD enclosure base. The laminated film seal may be constructed of a heat sealant layer that bonds with a surface of the base and a surface of the electrical connector, a barrier layer which inhibits gas from escaping from inside the HDD, and a film surface protective layer which protects the heat sealant and barrier layers. Embodiments may include a heat sealant layer comprising a thermoplastic polymer such as polypropylene, a barrier layer comprising a metal such as aluminum, and a film surface protective layer comprising a thermoplastic polymer such as polyethylene terephthalate.

Hermetic sealing of hard disk drive using laminated film seal

A hermetically-sealed hard disk drive (HDD) utilizes a laminated film seal to seal an HDD cover-to-base interface. The laminated film seal may be constructed of a heat sealant layer hermetically-coupled to and forming a seal with the base, a barrier layer which inhibits gas from escaping from inside the HDD, and a film surface protective layer which protects the heat sealant and barrier layers. Embodiments may include a heat sealant layer comprising a thermoplastic polymer such as polypropylene, a barrier layer comprising a metal such as aluminum, and a film surface protective layer comprising a thermoplastic polymer such as polyethylene terephthalate.

A hermetically-sealed hard disk drive (HDD) utilizes a laminated film seal to seal an interface of an electrical flexible cable assembly and an HDD enclosure base. The laminated film seal may be constructed of a heat sealant layer that bonds with a surface of the base and a surface of the flex cable, a barrier layer which inhibits gas from escaping from inside the HDD, and a film surface protective layer which protects the heat sealant and barrier layers. Embodiments may include a heat sealant layer comprising a thermoplastic polymer such as polypropylene, a barrier layer comprising a metal such as aluminum, and a film surface protective layer comprising a thermoplastic polymer such as polyethylene terephthalate.

A hermetically-sealed hard disk drive (HDD) utilizes a laminated film enclosure to hermetically seal an HDD within. The laminated film enclosure may be constructed of a heat sealant layer hermetically-sealed around the HDD, a barrier layer which inhibits gas from escaping from inside the laminated film enclosure, and a film surface protective layer which protects the heat sealant and barrier layers. Embodiments may include a heat sealant layer comprising a thermoplastic polymer such as polypropylene, a barrier layer comprising a metal such as aluminum, and a film surface protective layer comprising a thermoplastic polymer such as polyethylene terephthalate.

Growing community of inventors

Yokohama, Japan

Yuta Onobu