Load beam attachment to actuator arm
View Patent ↗An actuator assembly includes a rotatable actuator arm mounted on the base of a disc drive. The actuator arm includes a metallic member seated on a non-metallic body. A proximal end of a load beam is mounted on the actuator arm and a distal end of the load beam supports a head. The actuator assembly also includes a connection between the metallic member and the load beam that secures the load beam to the actuator arm.
1. In a disc drive comprising a rotatable disc mounted on a base, an actuator assembly comprising:
a rotatable actuator arm mounted on the base, the actuator arm comprising a non-metallic body and a metallic member seated on the non-metallic body;
a load beam comprising a proximal end having one or more metallic members and a distal end supporting a head; and
one or more metallic connections between the arm metallic member and the one or more metallic members on the load beam, the load beam being secured to the actuator arm solely by the metallic connections, wherein the metallic connections are one of a solder connection and a weld connection.
2. The actuator assembly of claim 1 , wherein the load beam comprises a metallic material.
3. The actuator assembly of claim 1 , wherein the non-metallic body comprises a circuit board.
4. The actuator assembly of claim 1 , wherein the non-metallic body comprises a material selected from a group consisting of fiberglass and polymer.
5. The actuator assembly of claim 1 , wherein the metallic connection is a solder connection.
6. The actuator assembly of claim 5 , wherein the load beam comprises a tab, and wherein the solder connection fixedly secures the tab to the metallic member on the actuator arm.
7. The actuator assembly of claim 5 , wherein the load beam comprises a stainless steel body and a solderable plating covering at least a portion of the stainless steel body.
8. The actuator assembly of claim 1 , wherein the metallic connection is a weld connection.
9. The actuator assembly of claim 8 , wherein a body of the load beam comprises stainless steel.
10. The actuator assembly of claim 1 , wherein the metallic member on the actuator arm comprises copper.
11. The actuator assembly of claim 10 , wherein the metallic member on the actuator arm comprises nickel plated copper.
12. A disc drive comprising a rotatable disc and an actuator assembly operable to move a head over the rotatable disc, the actuator assembly comprising:
a rotatable actuator arm comprising a circuit board and a metallic pad formed on a distal end of the circuit board;
a metallic load beam comprising a proximal end mounted on the distal end of the circuit board and a distal end supporting the head; and
one or more metallic connections between the metallic pad and the load beam, the load beam being secured to the to the actuator arm solely by the metallic connections, wherein the metallic connections are one of a solder connection and a weld connection.
13. The actuator assembly of claim 12 , wherein the circuit board comprises a material selected from the group consisting of fiberglass and polymer.
14. The actuator assembly of claim 12 , wherein the connection is a solder connection.
15. The actuator assembly of claim 14 , wherein the load beam comprises a tab, and wherein the solder connection fixedly secures the tab to the metallic pad.
16. The actuator assembly of claim 15 , wherein the tab comprises a stainless steel body and a solderable plating material covering at least a portion of the stainless steel body.
17. The actuator assembly of claim 16 , wherein the plating material is selected from a group consisting of tin-lead, tin-lead-copper, silver-tin-copper, and gold.
18. The actuator assembly of claim 15 , wherein the load beam defines a thermal relief aperture adjacent the at least one tab.
19. The actuator assembly of claim 12 , wherein the load beam comprises stainless steel and the connection is a weld connection.
20. The actuator assembly of claim 19 , wherein the weld connection is a spot-weld connection.
21. The actuator assembly of claim 19 , wherein the metallic pad comprises a copper material.
22. The actuator assembly of claim 21 , wherein the metallic pad comprises nickel plated copper.
23. A disc drive comprising a rotatable disc and an actuator assembly operable to move a head over the rotatable disc, the head mounted on a load beam, the actuator assembly comprising:
a rotatable actuator arm comprising a non-metallic body and a metallic pad formed on the non-metallic body; and
means for fixedly securing a metallic portion of the load beam to the metallic pad.
24. The disc drive of claim 23 , wherein the means for fixedly securing comprises a solder connection.
25. The disc drive of claim 24 , wherein the load beam comprises stainless steel and has a metallic plated portion, the solder connection fixedly connecting the metallic plated portion to the metallic pad.
26. The disc drive of claim 23 , wherein the means for fixedly securing comprises a weld connection.
27. The disc drive of claim 26 , wherein the load beam comprises stainless steel.
28. The disc drive of claim 23 , wherein the non-metallic body comprises a circuit board.