# US 2013/0155624 A1 · Heat dissipation structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0155624 A1 - Document ID: US20130155624A1 - Status: Published application - Kind: A1 - Application number: 13/456,498 - Filed: 2012-04-26 - Published: 2013-06-20 - Earliest claimed: 2011-12-16 - Assignees: Hon Hai Precision Industry Co., Ltd.; HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD. - Inventors: CHIH-HAO YANG; BAO-QUAN SHI; RONG YANG; XIANG-KUN ZENG - Web page: https://patentgrep.com/patent/US20130155624A1 ## CPC - H10W 40/641: {Snap-on arrangements, e.g. clips} - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract A heat dissipation structure includes a heat sink having a base formed with four securing tabs laterally extending from four corners of the base. Four positioning posts upwardly protrude from a printed circuit board. Four spring clips are attached to the four positioning posts respectively. Each of the four spring clips has a resilient piece for exerting a downward force to press a corresponding securing tab, thereby securing the heat sink to the printed circuit board. ## Claims ### Claim 1 A heat dissipation structure, comprising: a heat sink comprising a base comprising four securing tabs, each of the four securing tabs laterally extending from each corner of the base; a printed circuit board comprising four positioning posts upwardly projecting from the printed circuit board; and four spring clips, each of the four spring clips being attached to each of the four positioning posts, wherein each of the four spring clips comprises a resilient piece, the resilient piece being configured to exert a downward force and to press each of the four securing tabs, thereby securing the heat sink to the printed circuit board. ### Claim 2 (depends on 1) The heat dissipation structure of claim 1, wherein the resilient piece defines a positioning hole configured to receive each of the four positioning posts. ### Claim 3 (depends on 2) The heat dissipation structure of claim 2, wherein each of the four spring clips is rotatable about each of the four positioning posts. ### Claim 4 (depends on 3) The heat dissipation structure of claim 3, wherein each of the four positioning posts comprises a first cylinder and a second cylinder upwardly extending from a top surface side of the first cylinder, a diameter of the second cylinder being less than a diameter of the first cylinder. ### Claim 5 (depends on 4) The heat dissipation structure of claim 4, wherein the second cylinder is received in the positioning hole and each of the four spring clips is blocked by the top surface side of the first cylinder. ### Claim 6 (depends on 5) The heat dissipation structure of claim 5, wherein the positioning hole comprises a first portion defining a first semi-circle and a second portion defining a second semi-circle, a diameter of the second semi-circle being greater than a diameter of the first semi-circle; the first portion communicates with the second portion; and the first portion and the second portion define the positioning hole. ### Claim 7 (depends on 6) The heat dissipation structure of claim 6, wherein each of the four positioning posts comprises an arc-shaped boss upwardly projecting from the top surface side of the first cylinder and surrounding the second cylinder. ### Claim 8 (depends on 7) The heat dissipation structure of claim 7, wherein the arc-shaped boss defines a quarter of a circle having a diameter substantially identical to the diameter of the first cylinder. ### Claim 9 (depends on 4) The heat dissipation structure of claim 4, further comprising four securing caps, each of the four securing caps abutting each of the four spring clips, each of the four spring clips being sandwiched between each of the four securing caps and the top surface side of the first cylinder thereby the four spring clips being prevented from moving upwardly away from the four positioning posts. ### Claim 10 (depends on 9) The heat dissipation structure of claim 9, wherein each of the four securing caps defines a receiving opening, the receiving opening being configured to interferentially receive the second cylinder. ### Claim 11 (depends on 1) The heat dissipation structure of claim 1, wherein each of the four securing tabs defines a recess, the recess being configured to receive a free end of the resilient piece thereby the free end of the resilient piece is prevented from slipping away from each of the four securing tabs. ### Claim 12 (depends on 11) The heat dissipation structure of claim 11, wherein each of the four securing tabs comprises a slant plane adjacent to an exterior side of the recess, the slant plane being configured to facilitate the resilient piece to slip into the recess. ### Claim 13 (depends on 1) The heat dissipation structure of claim 1, wherein each of the four spring clips comprises a handling portion formed by bending a free end of the resilient piece along a vertical direction, the handling portion is adapted to rotate each of the four spring clip about each of the four positioning posts. ### Claim 14 A heat sink mounting apparatus for mounting a heat sink on a printed circuit board, the heat sink comprising a base formed comprising four securing tabs, each of the four securing tabs laterally extending from each corner of the base, the heat sink mounting apparatus comprising: four positioning posts secured to the printed circuit board and each of the four positioning posts being located in each corner of a rectangle; and four spring clips, each of the four spring clips being attached to each of the four positioning posts, wherein each of the four spring clips comprises a resilient piece defining a positioning hole, the positioning hole being configured to receive each of the four positioning posts; the resilient piece is configured to exert a downward force and to press each of the four securing tabs, thereby securing the heat sink to the printed circuit board. ### Claim 15 (depends on 14) The heat sink mounting apparatus of claim 14, wherein each of the four positioning posts comprises a first cylinder and a second cylinder upwardly extending from a top surface side of the first cylinder, a diameter of the second cylinder being less than a diameter of the first cylinder; the second cylinder is received in the positioning hole; and each of the four spring clips is blocked by the top surface side of the first cylinder. ### Claim 16 (depends on 15) The heat sink mounting apparatus of claim 15, wherein the positioning hole comprises a first portion defining a first semi-circle and a second portion defining a second semi-circle, a diameter of the second semi-circle being greater than a diameter of the first semi-circle; the first portion communicates with the second portion; and the first portions and the second portion define the positioning hole. ### Claim 17 (depends on 16) The heat sink mounting apparatus of claim 16, wherein each of the four positioning posts comprises an arc-shaped boss upwardly projecting from the top surface side of the first cylinder and surrounding the second cylinder, the arc-shaped boss defining a quarter of a circle having a diameter substantially identical to the diameter of the first cylinder. ### Claim 18 (depends on 15) The heat sink mounting apparatus of claim 15, further comprising four securing caps, each of the four securing caps abutting each of the four spring clips, each of the four spring caps being sandwiched between each of the four spring clips and the top surface side of the first cylinder thereby the four spring clips being prevented from moving upwardly away from the four positioning posts. ### Claim 19 (depends on 18) The heat sink mounting apparatus of claim 18, wherein each of the four securing caps defines a receiving opening, the receiving opening being configured to interferentially receive the second cylinder. ### Claim 20 (depends on 14) The heat sink mounting apparatus of claim 14, wherein each of the four spring clips comprises a handling portion formed by bending a free end of the resilient piece along a vertical direction, the handling portion is adapted to rotate each of the four spring clips about each of the four positioning posts.