CN2479567Y - CPU radiator fixed assembly - Google Patents

Abstract

A CPU heat sink fixing assembly. In order to provide a computer component with stable buckling and pressing, avoid shaking, firm assembly and avoid wear, the utility model is proposed, which comprises a buckle, a spring and a sleeve; the buckle is provided with a column head at the upper end, and a tenon column with an inverted buckle at the lower end; the bottom of the sleeve is provided with an inward-retracted bottom ring, and a through hole is formed in the center of the bottom ring for the tenon column of the buckle to pass through; the spring is sleeved on the tenon column of the buckle, the sleeve is sleeved outside the tenon column and the spring, and the two ends of the spring are respectively pressed against the column head of the buckle and the bottom ring at the bottom of the sleeve.

Description

CPU cooling fin fixing assembly

The utility model belongs to computer parts, in particular to a fixing assembly of a CPU cooling fin.

As shown in Figure 1 and Figure 2, the conventional CPU heat sink fixing device mainly uses several fasteners 1 to assemble and fix the matched heat sink 2 on the PC board 3 provided by the CPU4, and the heat sink 2 is used to reduce the heat sink. The operating temperature of CPU4. Wherein, the fastener 1 is a mortise post 13 with a head at the upper end and a spigot at the lower end, and a slit 121 is provided at the center of the undercut 12 at the bottom of the mortise post 13 of the fastener 1, so that two pairs of half can be cut by the slit 121. Elastic buckle action, and the tenon post 13 body is covered with a compression support spring 11, the spring 11 is inserted from the tenon post 13 bottom.

The matching heat sink 2 is provided with several through holes 21 for inserting tenon posts 13 , and the PC board 3 provided on the CPU 4 is also provided with corresponding through holes 31 for inserting tenon posts 13 .

When assembling, the through holes 21 and 31 of the heat sink 2 and the PC board 33 for the CPU 4 are opposite to each other, and the fastener 1 is inserted. When the insertion end of the mortise post 13 protrudes out of the bottom surface of the PC board 3 through the heat sink 2 and the through holes 21, 31 of the PC board 3, it is reversely locked with the undercut 12 of the fastener 1, and by sleeve The spring 11 compresses and resists on the mortise post 13, so that the heat sink 2 can be tightly attached to the CPU 4, and the undercut 12 can pass through the heat sink 2 and the The through-holes 21, 31 of the PC board 3 have the characteristic of reducing their outer diameters. However, due to the strong flexibility of the undercut 12, the force applied to the mortise post 13 is relatively large. Not only does it need to be pressed into the tenon post 13 by force to deform it, but it is also easy to cause the tenon post 13 itself to shake from side to side; Sheet 2 is made of metal material, so it is easy to cause wear and tear of undercut 12, and because undercut 12 has the effect of reaming, it is easy to make the through hole 31 of PC board 3 expand so that the situation that causes buckle group to loosen occurs.

The purpose of the utility model is to provide a CPU cooling fin fixing assembly with stable buckling and pressing, avoiding shaking, stable buckle assembly and avoiding wear and tear.

The utility model comprises a fastener, a spring and a sleeve; the upper end of the fastener is provided with a stud, and the lower end is a mortise post provided with an undercut; The tenon post pierces through the pivot; the spring is sleeved on the tenon post of the fastener, the sleeve is sleeved outside the tenon post and the spring, and the two ends of the spring are respectively pressed against the post of the fastener and the bottom ring at the bottom of the sleeve.

in:

The inside of the buckle of the fastener is provided with a slit forming an elastic shrinkage space.

The slits inside the underside of the fastener are two symmetrical long slits.

Because the utility model includes a fastener, a spring and a sleeve; the upper end of the fastener is provided with a stud, and the lower end is a mortise post with an undercut; The tenon post pierces through the pivot; the spring is sleeved on the tenon post of the fastener, the sleeve is sleeved outside the tenon post and the spring, and the two ends of the spring are respectively pressed against the post of the fastener and the bottom ring at the bottom of the sleeve. When in use, use the undercut of the fastener to pass through the lug of the heat sink and the through hole on the PC board, and protrude out of the bottom surface of the PC board, which can be reversely blocked by the undercut; The spring on the column head of the fastener and the bottom ring at the bottom of the casing presses the bottom of the casing against the top surface of the heat sink, and the bottom of the casing is pressed against the top surface of the heat sink by relying on the guide to avoid shaking and wear. Not only the fastening and pressing are stable to avoid shaking, but also the buckle assembly is stable and avoids wear and tear, thereby achieving the purpose of the utility model.

FIG. 1 is a schematic perspective view of the structure of a conventional CPU cooling fin fixing device.

Fig. 2 is a schematic diagram of the usage state of a conventional CPU cooling fin fixing device.

Fig. 3 is a perspective view showing the exploded structure of the utility model.

Fig. 4 is an exploded perspective view of the utility model in use.

Fig. 5 is a cross-sectional view of the utility model in use.

Below in conjunction with accompanying drawing, the utility model is set forth in further detail.

As shown in FIG. 3 , the utility model includes a fastener 5 , a sleeve 54 and a spring 51 .

The upper end of the fastener 5 is provided with a column head 50 , and the lower end is a mortise post 53 provided with an undercut 52 . Inside the undercut 52 there are two symmetrical elongated slits 521 forming an elastic shrinkage space.

A retracted bottom ring 541 is provided at the bottom of the sleeve 54 , and a through hole 542 is formed in the center of the bottom ring 541 for the tenon post 53 of the fastener 5 to pass through.

As shown in FIG. 5 , the spring 51 and the sleeve 54 are sheathed outside the mortise post 53 of the fastener 5 , and the two ends of the spring 51 respectively abut against the column head 50 of the fastener 5 and the bottom ring 541 at the bottom of the sleeve 54 .

As shown in Fig. 4 and Fig. 5, when in use, place the heat sink 2 with the through hole 21 lug 22 protruding diagonally above the PC board 3 on which the CPU 4 is set, and make the through hole 2 on the heat sink 2 lug 22 The hole 21 is opposite to the through hole 31 on the PC board 3, and the undercut 52 of the fastener 5 of the present invention passes through the lug 22 of the heat sink 2 and the through holes 21, 31 on the PC board 3, and protrudes out of the PC board. The bottom surface of the plate 3 can be reversely blocked by the undercut 52 . When both sides of the undercut 52 are under pressure, the elastic shrinkage space formed by the slit 521 facilitates the undercut 52 to snap into or withdraw from the through holes 21, 31 on the heat sink 2 and the PC board 3; The upper end of the spring 51 presses the bottom of the sleeve 54 against the top surface of the heat sink 2. When the fastener 5 is pressed, the fastener 5 will The casing 54 whose bottom is pressed against the top surface of the heat sink 2 relies on the guidance to avoid shaking and is easy to securely fasten the assembly. The tenon post 53 and the outer spring 51 are compressed and supported so that the heat sink 2 is tightly attached to the CPU4. .

As mentioned above, the utility model relies on the guidance of the fastener 5 by being sleeved on the outer peripheral sleeve 54 of the fastener 5, so that the fastener 5 can be pressed down firmly without shaking from side to side; When pressing, the two long slits 521 which are symmetrical left and right inside form an elastic shrinkage space, which not only helps the undercut 52 to snap into or withdraw from the through holes 21, 31 on the heat sink 2 and the PC board 3, but also can Avoid the occurrence of wear and tear due to forced penetration of the through hole 21 of the heat sink 2 .

Claims (3)

1. A CPU heat sink fixing assembly, which includes a fastener and a spring; the upper end of the fastener is provided with a stud, and the lower end is a tenon post with an undercut; On the column head of the fastener; it is characterized in that the fastener and the spring jacket are provided with a sleeve; the bottom of the sleeve is provided with a retracted bottom ring, and a perforation for the tenon post of the fastener to pass through the pivot is formed in the center of the bottom ring; The other end of the spring is against the bottom ring at the bottom of the casing. 2. The CPU cooling fin fixing assembly according to claim 1, characterized in that the inside of the undercut of the fastener is provided with a slit forming an elastic shrinkage space. 3. The CPU cooling fin fixing assembly according to claim 1 or 2, characterized in that the slits inside the undercut of the fastener are two symmetrical long slits.

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