Fixing device for double sided heat sink and associated heat dissipating system
Embodiments of the present disclosure relate to a fixing device for a double-sided heat sink and an associated heat dissipating system. There is exemplarily provided a fixing device for mounting the double-sided heat sink on a carrier. The fixing device comprises: a first holder including a first cylindrically-shaped rod, wherein the first cylindrically-shaped rod can pass through a first cooling portion of the double-sided heat sink and a mounting hole of the carrier to fix the first cooling portion to a first side of the carrier, and the first cylindrically-shaped rod comprises a through-hole extending along a longitudinal direction; and a second holder including a second cylindrically-shaped rod, wherein the second cylindrically-shaped rod can pass through a mounting hole of a second cooling portion of the double-sided heat sink and the through-hole of the first holder, such that the second holder is coupled with the first holder to fix the second cooling portion to a second side of the carrier opposite to the first side.
1. A fixing device for mounting a double-sided heat sink on a carrier, comprising:
a first holder comprising a first cylindrically-shaped rod, wherein the first cylindrically-shaped rod passes through a first cooling portion of the double-sided heat sink and a mounting hole of the carrier to fix the first cooling portion to a first side of the carrier, the first cylindrically-shaped rod comprising a through-hole extending along a longitudinal direction; and
a second holder comprising a second cylindrically-shaped rod, wherein the second cylindrically-shaped rod passes through a mounting hole of a second cooling portion of the double-sided heat sink and through the through-hole of the first cylindrically-shaped rod, such that the second holder is coupled with the first holder to fix the second cooling portion to a second side of the carrier opposite to the first side:
wherein the first holder comprises:
a first flexible latch located at a first end of the first cylindrically-shaped rod, the first flexible latch passing through the first cooling portion and the mounting hole of the carrier from the first side of the carrier to fix the first end of the first holder to the second side of the carrier.
2. The fixing device according to claim 1 , wherein the first holder comprises:
a first flange located at a second end of the first cylindrically-shaped rod, the first flange limiting movement of the first cooling portion in the longitudinal direction.
3. The fixing device according to claim 1 , wherein the first holder comprises:
a protrusion adjoining the first flexible latch, the protrusion defining a gap between the second cooling portion and the second side of the carrier.
4. The fixing device according to claim 2 , further comprising:
a cylindrically-shaped spring arranged between the first flange and the first flexible latch.
5. The fixing device according to claim 1 , wherein the second holder comprises:
a second flexible latch located at a first end of the second cylindrically-shaped rod, the second flexible latch passing through the mounting hole of the second cooling portion and through the through-hole of the first holder from the second side of the carrier to couple the first end of the second holder to the second end of the first holder.
6. The fixing device according to claim 5 , wherein the second flexible latch is formed in an inverted trapezoid shape.
7. The fixing device according to claim 1 , wherein the first flexible latch is formed in an inverted trapezoid shape.
8. A fixing device for mounting a double-sided heat sink on a carrier, comprising:
a first holder comprising a first cylindrically-shaped rod, wherein the first cylindrically-shaped rod passes through a first cooling portion of the double-sided heat sink and through a mounting hole of the carrier to fix the first cooling portion to a first side of the carrier, the first cylindrically-shaped rod comprises a through-hole extending along a longitudinal direction; and
a second holder comprising a second cylindrically-shaped rod, wherein the second cylindrically-shaped rod passes through a mounting hole of a second cooling portion of the double-sided heat sink and through the through-hole of the first cylindrically-shaped rod, such that the second holder is coupled with the first holder to fix the second cooling portion to a second side of the carrier opposite to the first side;
wherein the second holder comprises:
a second flexible latch located at a first end of the second cylindrically-shaped rod, the second flexible latch passing through the mounting hole of the second cooling portion and the through-hole of the first holder from the second side of the carrier to couple the first end of the second holder to the second end of the first holder.
9. The fixing device according to claim 8 , wherein the second flexible latch is formed in an inverted trapezoid shape.
10. The fixing device according to claim 8 , wherein the first holder comprises:
a first flange located at a second end of the first cylindrically-shaped rod, the first flange limiting movement of the first cooling portion in the longitudinal direction.
11. The fixing device according to claim 8 , wherein the first holder comprises:
a protrusion adjoining the first flexible latch, the protrusion being arranged to define a gap between the second cooling portion and the second side of the carrier.
12. The fixing device according to claim 10 , further comprising:
a cylindrically-shaped spring arranged between the first flange and the first flexible latch.
13. The fixing device according to claim 8 , wherein the second holder comprises:
a second flange located at a second end of the second cylindrically-shaped rod, the second flange limiting movement of the second cooling portion in the longitudinal direction.
14. A heat dissipating system, comprising:
a double-sided heat sink;
a carrier, on which a chip is arranged; and
a fixing device mounting the double-sided heat sink on the carrier, wherein the fixing device comprises:
a first holder comprising a first cylindrically-shaped rod, wherein the first cylindrically-shaped rod passes through a first cooling portion of the double-sided heat sink and through a mounting hole of the carrier to fix the first cooling portion to a first side of the carrier, and the first cylindrically-shaped rod comprises a through-hole extending along a longitudinal direction; and
a second holder comprising a second cylindrically-shaped rod, wherein the second cylindrically-shaped rod passes through a mounting hole of a second cooling portion of the double-sided heat sink and through the through-hole of the first cylindrically-shaped rod, such that the second holder is coupled with the first holder to fix the second cooling portion to a second side of the carrier opposite to the first side;
wherein the fixing device includes at least one of:
a first flexible latch associated with the first holder and located at a first end of the first cylindrically-shaped rod, the first flexible latch passing through the first cooling portion and through the mounting hole of the carrier from the first side of the carrier to fix the first end of the first holder to the second side of the carrier; and
a second flexible latch associated with the second holder and located at a first end of the second cylindrically-shaped rod, the second flexible latch passing through the mounting hole of the second cooling portion and through the through-hole of the first holder from the second side of the carrier to couple the first end of the second holder to the second end of the first holder;
wherein the double-sided heat sink comprises:
a heat pipe, through which the first cooling portion and the second cooling portion are connected to perform heat transfer.
15. The heat dissipating system according to claim 14 , wherein the fixing device comprises each of the first flexible latch and the second flexible latch.
16. The heat dissipating system according to claim 15 , wherein the first holder comprises:
a protrusion adjoining the first flexible latch, the protrusion being arranged to define a gap between the second cooling portion and the second side of the carrier.
17. The heat dissipating system according to claim 15 , wherein the first holder comprises:
a first flange located at a second end of the first cylindrically-shaped rod, the first flange limiting movement of the first cooling portion in the longitudinal direction.
18. The heat dissipating system according to claim 17 , further comprising:
a cylindrically-shaped spring arranged between the first flange and the first flexible latch.
19. The heat dissipating system according to claim 15 , wherein the first flexible latch and the second flexible latch each includes an inverted trapezoid shape.
20. The heat dissipating system according to claim 14 , wherein the second holder comprises:
a second flange located at a second end of the second cylindrically-shaped rod, the second flange limiting movement of the second cooling portion in the longitudinal direction.