CN211090387U

CN211090387U - Novel radiating fin fixing device

Info

Publication number: CN211090387U
Application number: CN201921849589.7U
Authority: CN
Inventors: 胡兆弟
Original assignee: Suzhou Inspur Intelligent Technology Co Ltd
Current assignee: Suzhou Inspur Intelligent Technology Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-07-24
Anticipated expiration: 2029-10-31

Abstract

The utility model discloses a novel radiating fin fixing device, which comprises a fixing column and a fixing hole on a PCB; the fixed column comprises a pressing top, two fixed supporting legs with the same structure and a spring; the two fixed supporting legs are oppositely arranged on the pressing top, and the spring is sleeved on the two fixed supporting legs; the fixed supporting leg is provided with a clamping hook, the clamping hook comprises a transverse connecting part and an upper hook part, one end of the transverse connecting part is connected with the inner side of the fixed supporting leg, and the other end of the transverse connecting part is connected with the upper hook part; the fixing hole on the PCB board comprises two through holes for the transverse connection part to pass through, and two clamping holes for the upper hook part to be clamped are distributed between the two through holes. The device can be very conveniently installed and disassembled without tools, solves the problem of complex operation when the radiating fins are disassembled, saves workload, and can avoid the tools from damaging the PCB and the clamping hooks.

Description

Novel radiating fin fixing device

Technical Field

The utility model relates to a fin field, concretely relates to novel fin is fixed device.

Background

With the rapid development of the server industry, the data processing speed and the data processing amount are increased dramatically, the stability of the server work is more and more important, and meanwhile, the server also receives unprecedented challenges. The server can work stably under high load for a long time, and is closely related to the stability and the high efficiency of each part.

For a server motherboard, the power supply is just like the heart of the motherboard, so the efficient operation of the power supply inevitably calls for the attention of developing the test task. Because the power supply chip can generate partial heat during operation, especially during the on-load operation. The power supply works at high temperature, and the working performance is weakened and the efficiency is low compared with the normal temperature. Meanwhile, high temperature can affect the precision and stability of the electronic element, and the capacitance value, resistance value and the like of the element can even cause the damage of the electronic element and further cause the non-work of the power supply chip. Therefore, it is very important for the heat dissipation of the power chip. The conventional power chip radiating mode is to add a radiating fin, and fix the radiating fin on the surface of the chip through a fixing hole on the PCB, so that the radiating effect is achieved.

As shown in fig. 1, the way that the heat sink and the chip can be fixed on the PCB at the same time by contacting the surfaces of the heat sink and the chip is that a fixing column with a spring passes through a hole of the heat sink and a fixing hole of the PCB, and the heat sink is fixed by a buckle at the bottom and the upward elasticity of the spring. The fixing column is pressed into the fixing hole of the PCB in this way, and the plastic fastener at the front end has elasticity, so that the fixing column can be easily inserted into the hole of the PCB, and meanwhile, the fixing column cannot be ejected out due to the elasticity of the spring. However, this type of fixing method has the disadvantage that it is inconvenient to detach the heat sink for work reasons, and the heat sink can be pulled out of the PCB fixing hole by pressing the clip with a tool. If the mainboard has been built or the test environment has been built, it will seem that work load is very big to go to dismantle again, and rubs PCB easily with the help of the in-process of instrument pinch-off buckle, can cause certain damage to the buckle, has the potential safety hazard.

Disclosure of Invention

In order to solve the above problems, the utility model provides a novel heat sink fixing device, which can be conveniently installed and disassembled.

The technical scheme of the utility model is that: a novel radiating fin fixing device comprises a fixing column and a fixing hole on a PCB;

the fixed column comprises a pressing top, two fixed supporting legs with the same structure and a spring; the two fixed supporting legs are oppositely arranged on the pressing top, and the spring is sleeved on the two fixed supporting legs; the fixed supporting leg is provided with a clamping hook, the clamping hook comprises a transverse connecting part and an upper hook part, one end of the transverse connecting part is connected with the inner side of the fixed supporting leg, and the other end of the transverse connecting part is connected with the upper hook part;

the fixing hole on the PCB board comprises two through holes for the transverse connection part to pass through, and two clamping holes for the upper hook part to be clamped are distributed between the two through holes.

Further, the two fixed legs are symmetrically arranged on the pressing top along the central axis of the pressing top.

Furthermore, the outer side of the fixed supporting leg is arc-shaped.

Further, the trip sets up in fixed landing leg bottom.

Further, the upper hook portion is inclined toward the fixed leg side.

Further, the upper end of the spring is fixedly connected with the pressing top.

Furthermore, the fixing column is sleeved in a hole in the radiating fin, and the lower end of the spring is clamped on the upper side face of the radiating fin.

The novel radiating fin fixing device provided by the utility model can be very conveniently installed and disassembled, and does not need tools, thereby solving the problem of complex operation when the radiating fin is disassembled, and saving the workload; the damage to the PCB and the damage to the clamping hook when the radiating fin is disassembled by using a tool can be effectively avoided, and the radiating fin can be recycled; partial reworking work is avoided to a certain extent, and the working efficiency is improved.

Drawings

Fig. 1 is a schematic diagram of a prior art structure.

Fig. 2 is a schematic structural diagram of the embodiment.

FIG. 3 is a diagram illustrating a fixing hole structure on a PCB board according to an embodiment.

In the figure, 1-fixed column, 2-radiating fin, 3-PCB board, 4-pressing top, 5-spring, 6-fixed leg, 7-cross connecting part, 8-upper hook part, 9-through hole, 10-clamping hole, L-distance between two fixed legs.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings by way of specific examples, which are illustrative of the present invention and are not limited to the following embodiments.

As shown in fig. 2 and 3, the novel heat sink fixing device provided by this embodiment includes a fixing post 1 and a fixing hole on the PCB 3.

The fixed column 1 comprises a pressing top 4, two fixed supporting legs 6 with the same structure and a spring 5; the two fixed supporting legs 6 are oppositely arranged on the pressing top 4, and the spring 5 is sleeved on the two fixed supporting legs 6; be provided with the trip on fixed landing leg 6, the trip includes crossing portion 7 and upper hook portion 8, and 7 one end of crossing portion are connected with fixed landing leg 6 inboards, and the other end is connected with upper hook portion 8.

The fixing holes on the PCB 3 comprise two through holes 9 for the transverse part 7 to pass through, and two clamping holes 10 for the upper hook part 8 to be clamped are distributed between the two through holes 9, and the total number of the clamping holes is four.

It should be noted that the width of the cross portion 7 is slightly smaller than the through hole 9 to ensure that the fixed leg 6 passes through the PCB board 3, and meanwhile, the width between the fixed leg 6 and the upper hook portion 8 satisfies that the upper hook portion 8 can be clamped in the clamping hole 10 under the condition that the fixed leg 6 is tightly attached to the inner side wall of the through hole 9. The fixed leg 6 has micro elasticity, and the fixed column 1 is sleeved in the hole on the radiating fin 2.

The working principle of the fixing device is that when the heat sink 2 is installed, (1) because the width L between the two fixing legs 6 is smaller than the distance between the two through holes 9 when the spring 5 extends to the initial state, the distance between the two fixing legs 6 can be gradually increased only by pressing the spring 5 downwards, and the fixing legs 6 can extend into the through holes 9 when the distance between the two through holes 9 is equal to the width, (2) after the fixing legs extend downwards, the spring 5 is loosened, the width L between the two fixing legs 6 is reduced due to the elastic force of the spring 5 and the extrusion limited by the holes on the heat sink 2, so that the fixing legs 6 can be tightly attached to the inner side walls of the through holes 9, at the moment, the upper hook part 8 is just clamped in the clamping hole 10, the fixing legs 6 cannot be popped out, when the heat sink 2 is disassembled, (1) the spring 5 is pressed downwards by hand, the upper hook part 8 is separated from the clamping hole 10, and (2) because the distance of the width L between the two fixing legs 6 in the natural state is slightly larger than the width between the two through holes 9, so that the distance between the fixing legs 6 can be easily pulled out when the spring 5 is.

In order to improve the convenience of operation, in this embodiment, two fixed leg supports 6 are along pressing 4 central axis symmetry settings on pressing 4, and the trip setting is in fixed leg support 6 bottoms.

The outer side of the fixed supporting leg 6 is arc-shaped so as to reduce friction. The upper hook part 8 inclines towards the fixed supporting leg 6, so that the fixation is firmer.

The upper end of the spring 5 is fixedly connected with the pressing top 4, the fixing column 1 is sleeved in a hole in the radiating fin 2, and the lower end of the spring 5 is clamped on the upper side face of the radiating fin 2, so that the structure is simple and the operation is convenient.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A novel radiating fin fixing device is characterized by comprising a fixing column and a fixing hole in a PCB;

2. The novel heat sink securing device according to claim 1, wherein the two securing legs are symmetrically disposed on the top along the top center axis.

3. A novel heat sink mounting apparatus as claimed in claim 1, wherein the outer sides of the mounting legs are rounded.

4. A novel heat sink fixing device as claimed in claim 1, 2 or 3, wherein the hook is provided at the bottom of the fixing leg.

5. The novel heat sink fixing device according to claim 4, wherein the upper hook portion is inclined toward the fixing leg side.

6. A novel heat sink fixing device as claimed in claim 1, 2 or 3, wherein the upper end of the spring is fixedly connected to the press top.

7. A novel heat sink fixing device as claimed in claim 6, wherein the fixing posts are sleeved in holes on the heat sink, and the lower ends of the springs are clamped on the upper side of the heat sink.