Coil assemby, head suspension assembly, disk device, and method of manufacturing head suspension assembly
First Claim
1. A coil assembly comprising:
- a support frame which has a first support surface and a second support surface opposed to each other and on which a voice coil is fixed; and
a board unit having a base portion on which an electronic component is mounted, a belt-shaped main flexible printed circuit board extending from the base portion, and a connecting portion extending from one side of an extended end portion of the main flexible printed circuit board, the connecting portion including a first connecting portion which extends in a longitudinal direction of the main flexible printed circuit board and has a plurality of first connection pads arranged in the longitudinal direction, a junction portion extending from the first connecting portion, and a second connecting portion which extends in the longitudinal direction of the main flexible printed circuit board from the junction portion and has a plurality of second connection pads arranged in the longitudinal direction, the first connecting portion being fixed to the first support surface of the support frame, and the second connecting portion being folded back at the junction portion and fixed to the second support surface of the support frame.
1 Assignment
0 Petitions
Accused Products
Abstract
A coil assembly of a disk device includes a support frame on which a voice coil is fixed and a board unit connected to the support frame. The board unit has a main FPC extending from a base portion and a connecting portion extending from one side of an extended end portion of the main FPC. The connecting portion comprises a first connecting portion which extends in a longitudinal direction of the main FPC and has a plurality of first connection pads, a junction portion extending from the first connecting portion, and a second connecting portion which extends in the longitudinal direction of the main FPC from the junction portion and has a plurality of second connection pads. The first and second connecting portions are fixed to first and second support surfaces, respectively, of the support frame.
14 Citations
13 Claims
-
1. A coil assembly comprising:
-
a support frame which has a first support surface and a second support surface opposed to each other and on which a voice coil is fixed; and
a board unit having a base portion on which an electronic component is mounted, a belt-shaped main flexible printed circuit board extending from the base portion, and a connecting portion extending from one side of an extended end portion of the main flexible printed circuit board, the connecting portion including a first connecting portion which extends in a longitudinal direction of the main flexible printed circuit board and has a plurality of first connection pads arranged in the longitudinal direction, a junction portion extending from the first connecting portion, and a second connecting portion which extends in the longitudinal direction of the main flexible printed circuit board from the junction portion and has a plurality of second connection pads arranged in the longitudinal direction, the first connecting portion being fixed to the first support surface of the support frame, and the second connecting portion being folded back at the junction portion and fixed to the second support surface of the support frame. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A head suspension assembly comprising:
-
a bearing portion;
a coil assembly having a support frame attached to the bearing portion, a voice coil fixed on the support frame, and a board unit connected to the support frame; and
a first head gimbals assembly and a second head gimbals assembly attached to the bearing portion and opposed to each other with the support frame therebetween, the support frame of the coil assembly having a through hole through which the bearing portion is passed and a first support surface and a second support surface opposed to each other, the board unit having a base portion on which an electronic component is mounted, a belt-shaped main flexible printed circuit board extending from the base portion, and a connecting portion extending from one side of an extended end portion of the main flexible printed circuit board, the connecting portion including a first connecting portion which extends in a longitudinal direction of the main flexible printed circuit board and has a plurality of first connection pads arranged in the longitudinal direction, a junction portion extending from the first connecting portion, and a second connecting portion which extends in the longitudinal direction of the main flexible printed circuit board from the junction portion and has a plurality of second connection pads arranged in the longitudinal direction, the first connecting portion being fixed to the first support surface of the support frame, and the second connecting portion being folded back at the junction portion and fixed to the second support surface of the support frame, the first head gimbals assembly including an arm which has a proximal end portion with a through hole through which the bearing portion is passed and extends from the bearing portion, a suspension extending from an extended end of the arm, a head mounted on an extended end of the suspension, and a relay flexible printed circuit board which is mounted on the arm and the suspension and has one end portion connected electrically to the head, a connecting end portion extending from the proximal end portion of the arm and lapped on the first connecting portion, and a plurality of connection pads provided on the connecting end portion and connected to the first connection pads, the second head gimbals assembly including an arm which has a proximal end portion with a through hole through which the bearing portion is passed and extends from the bearing portion, a suspension extending from an extended end of the arm, a head mounted on an extended end of the suspension, and a relay flexible printed circuit board which is mounted on the arm and the suspension and has one end portion connected electrically to the head, a connecting end portion extending from the proximal end portion of the arm and lapped on the second connecting portion, and a plurality of connection pads provided on the connecting end portion and connected to the second connection pads. - View Dependent Claims (7, 8, 9, 10, 11)
-
-
12. A method of manufacturing a head suspension assembly, which comprises a bearing portion, a coil assembly having a support frame attached to the bearing portion, a voice coil fixed on the support frame, and a board unit connected to the support frame, and a first head gimbals assembly and a second head gimbals assembly attached to the bearing portion and opposed to each other with the support frame therebetween, the support frame of the coil assembly having a through hole through which the bearing portion is passed and a first support surface and a second support surface opposed to each other, the board unit having a base portion on which an electronic component is mounted, a belt-shaped main flexible printed circuit board extending from the base portion, and a connecting portion extending from one side of an extended end portion of the main flexible printed circuit board, the connecting portion comprising a first connecting portion which extends in a longitudinal direction of the main flexible printed circuit board and has a plurality of first connection pads arranged in the longitudinal direction, a junction portion extending from the first connecting portion, and a second connecting portion which extends in the longitudinal direction of the main flexible printed circuit board from the junction portion and has a plurality of second connection pads arranged in the longitudinal direction, the first connecting portion being fixed to the first support surface of the support frame, and the second connecting portion being folded back at the junction portion and fixed to the second support surface of the support frame, the first head gimbals assembly comprising an arm which has a proximal end portion with a through hole through which the bearing portion is passed and extends from the bearing portion, a suspension extending from an extended end of the arm, a head mounted on an extended end of the suspension, and a relay flexible printed circuit board which is mounted on the arm and the suspension and has one end portion connected electrically to the head, a connecting end portion extending from the proximal end portion of the arm and lapped on the first connecting portion, and a plurality of connection pads provided on the connecting end portion and connected to the first connection pads, the second head gimbals assembly comprising an arm which has a proximal end portion with a through hole through which the bearing portion is passed and extends from the bearing portion, a suspension extending from an extended end of the arm, a head mounted on an extended end of the suspension, and a relay flexible printed circuit board which is mounted on the arm and the suspension and has one end portion connected electrically to the head, a connecting end portion extending from the proximal end portion of the arm and lapped on the second connecting portion, and a plurality of connection pads provided on the connecting end portion and connected to the second connection pads, the method comprising:
-
adhesively bonding the first and second connecting portions of the main flexible printed circuit board to the first and second support surfaces, respectively, of the support frame;
connecting the voice coil to the first connecting portion;
superposing anisotropic conductive films on the first connection pads of the first connecting portion and the second connection pads of the second connecting portion;
mounting the first and second head gimbals assemblies and the support frame on the bearing portion;
superposing the connecting end portion of the relay flexible printed circuit board of the first head gimbals assembly and the connecting end portion of the relay flexible printed circuit board of the second head gimbals assembly on the first connecting portion and the second connecting portion, respectively; and
heat/pressure-bonding the connecting end portion of the relay flexible printed circuit board of the first head gimbals assembly and the connecting end portion of the relay flexible printed circuit board of the second head gimbals assembly to the first connecting portion and the second connecting portion, respectively, with the anisotropic conductive films therebetween. - View Dependent Claims (13)
-
Specification