Sae Magnetics (h.k.) Limited

Sae Magnetics (h.k.) Lts.

Jeffery L Wang

Yiu Sing Ho

Chi Hung Yuen

Liu Jun Zhang

Takehiro Kamigama

Kai Wu

Can Hua Chen

Li Xing Wu

Satoshi Yamaguchi

Hiroshi Fukaya

Kam Fung Yip

Yen Fu

Hong Tian

Guo Hong Lu

Hai Ming Zhou

Ji Yang

A method and apparatus for electrically coupling a slider to a controller circuit are disclosed. In one embodiment, a pre-amplifier with an integrated electrical connector (I-connector) may be connected via an electrical trace to a slider and via a head stack assembly flexible circuit to a control circuit. The pre-amplifier may have two parallel series of spring probe claws, two parallel series of contact pegs, two slots, or a slot and a rotary cam.

Electrical connection between a suspension flexure cable and a head stack assembly flexible circuit

A system and method for an improved magnetic head arm assembly (HAA) is disclosed. The HAA includes three principal components, a head gimbal assembly (HGA), a flexible printed circuit (FPC) assembly, and an actuator coil assembly. The design allows for HAA rigidity, yet each of the components is designable and manufacturable independent of one another, in addition to other advantages over current methods.

Method for manufacturing a magnetic head arm assembly (HAA)

A gimbal design for a hard disk drive are disclosed. In one embodiment, a gimbal tongue is supported by a gimbal cross bar coupled to a suspension body by a pair of gimbal struts. A pair of grounding pads are mounted on either side of the leading edge of the gimbal tongue. A first limiter tab is coupled to the leading edge of the gimbal tongue and a second limiter tab is coupled to the trailing edge of the gimbal tongue. Notches on either side of the trailing edge limiter tab increase the strength of the tab. One or more cutouts allow the slider to be electrically coupled to bonding pads on the opposite side of the gimbal tongue. Angled slots at the juncture of the gimbal cross bar and the gimbal tongue relieve stress on the gimbal.

Gimbal design with solder ball bond pads and trailing edge limiter tab for a recording head

A method for mounting a head stack assembly (HSA) circuit assembly is disclosed. A flexible circuit substrate may be coupled to a stiffener. The stiffener may be a metal, such as aluminum, or some other stiff and durable material. The flexible circuit substrate may be made of an organic material and may have a series of electronic leads embedded in the flexible circuit substrate. The flexible substrate may be coupled to the stiffener by an adhesive or laminated onto the stiffener. The stiffener may be mounted onto the actuator arm by soldering or by laser welding.

Method of head stack assembly flexible circuit assembly attached to an actuator arm

A system and method for an improved magnetic head arm assembly (HAA), reducing complexity of design and difficulty of manufacture, is disclosed.

Method for an improved magnetic head arm assembly

A system and method are disclosed for improving the electrical connection of a hard drive relay flexible circuit assembly to a head-gimbal assembly (HGA) flexure cable. In one embodiment, a flexible circuit assembly is attached to a hard drive coil carriage via a U-shaped connector and is electrically coupled to the HGA flexure cable by a bonding agent, such as an Anisotropic Conductive Film (ACF).

System and method for improving the electrical connection of a hard drive relay flexible circuit assembly of an HGA flexure cable

Method and apparatus for an improved magnetic head arm assembly

System and method for a three-piece design of a magnetic head assembly

A head actuator mechanism and a method of manufacture for that mechanism are disclosed. The head actuator mechanism includes a head gimbal assembly coupled to the top support face of a bearing assembly and an actuator driving mechanism coupled to the opposite support face. The head gimbal assembly includes an actuator arm and a load beam, the actuator arm being mounted to the top support face. The actuator driving assembly includes a driving coil and a coil holder frame. The driving coil is positioned in a magnetic field created by a magnetic block and yoke.

Construction method and design for a magnetic head actuator mechanism

The present invention provides a baseplate comprising a cylindrical hub, a flat flange, and one or two circular notches of a &ldquo;V&rdquo; or &ldquo;U&rdquo; shape etc. formed in said flange. This baseplate has the advantages of smaller deformation and larger retention torque during swage operation. Also it is easy to make and has no further cost in production. Moreover, the present invention further provides an arm and suspension assembly equipped with the baseplate and a hard disk drive equipped with the arm and suspension assembly.

Growing community of inventors

Hong Kong, China

Jeffery L Wang