Heat sink fixing structure

Abstract

The invention provides a cooling fin fixing structure, which is suitable for accommodating of cables of electronic products. The fixing structure comprises a cooling fin with a first locking hole, a mainboard with a second locking hole, and a locking piece which comprises a fixed column, an elastic arm, a gasket and a locking arm; the fixed column comprises a column body and a clamping hook; a containing groove is formed between the column body and the clamping hook; the gasket is provided with a through hole; when an external force is applied to the locking piece, the locking arm penetrates through the first locking hole of the cooling fin and the second locking hole of the mainboard, the gasket is abutted with the cooling fin, and the elastic arm is pressed to be bent for enabling the clamping hook to penetrate through the through hole of the gasket, the first locking hole of the cooling fin and the second locking hole of the mainboard; and when the external force is released, the locking arm enters the containing groove of the clamping hook and supports the clamping hook to be open, and the clamping hook hooks the mainboard to realize self-locking. The self-locking is stable andfirm; the installation is rapid; the structure is simple; and the cost is low.

Description

technical field [0001] The invention relates to the technical field of heat sinks, in particular to a heat sink fixing structure. Background technique [0002] In existing electronic products, there is a central processing unit inside the main casing, which generates heat during operation. Therefore, the heat sink is fixed on the main board to dissipate heat from the central processing unit. The traditional fixed structure for fixing the heat sink includes The fixing column and the spring only hook the motherboard through the hook at the lower end of the fixing column, and cannot be self-locked. When the electronic product is working, the fixed structure may easily fall off due to vibration. In addition, the spring is made of metal. When the fixed structure falls off, the electronic product It is prone to short circuit and easy to cause electromagnetic interference. Contents of the invention [0003] In view of this, it is necessary to provide a heat sink fixing structure...

AI Technical Summary

Problems solved by technology

[0002] In existing electronic products, there is a central processing unit inside the main casing, which generates heat during operation, so the heat sink is fixed on the main board to dissipate heat from the central processing unit. The traditional fixed structure for fixing the heat sink includes The fixing column and the spring only hook the main board through the hook at the lower end of the fixing column, and cannot be self-locked. When the electronic product is working, the fixed structure may easily fall off due to vibration. In addition, the spring is made of metal. When the fixed structure falls off, the electronic product Prone to short circuit and easy to cause electromagnetic interference

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