CN211090407U - Radiating fin fixing structure - Google Patents
Radiating fin fixing structure Download PDFInfo
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- CN211090407U CN211090407U CN201922043110.7U CN201922043110U CN211090407U CN 211090407 U CN211090407 U CN 211090407U CN 201922043110 U CN201922043110 U CN 201922043110U CN 211090407 U CN211090407 U CN 211090407U
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- 235000009797 Lagenaria vulgaris Nutrition 0.000 description 19
- 238000000034 method Methods 0.000 description 8
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
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Abstract
The utility model provides a radiating fin fixing structure, which comprises a radiating fin fixing hole, a PCB fixing hole, a fixing column main body and a spring; the fixing column main body comprises a pressing part, a clamping part and a middle connecting column, the middle connecting column is connected with the pressing part and the clamping part, the outer diameter of the pressing part and the outer diameter of the clamping part are both larger than the outer diameter of the middle connecting column, and the spring penetrates through the middle connecting column; the outer diameter of the spring is larger than the inner diameter of the radiating fin fixing hole; the PCB fixing hole comprises a through area, a movable area and a clamping area; the clamping part of the fixing column main body can penetrate through the penetrating area, the middle connecting column of the fixing column main body can penetrate through the moving area, and the clamping part of the fixing column main body can be clamped in the clamping area. The utility model solves the complex operation when disassembling the radiating fin, and saves the workload; the damage to the PCB and the damage to the buckle when the radiating fin is detached 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.
Description
Technical Field
The utility model belongs to the technical field of the server power heat dissipation, concretely relates to fin fixed knot constructs.
Background
With the rapid development of the server industry and the rapid increase of the data processing speed and data processing amount of the server, the working stability of the server becomes more and more important, and the unprecedented challenge that the efficient and stable working of the main board meets comes on the side. For the server, the high-load stable operation of the long-term can be realized, and the stability and the efficiency of each part are inseparably connected.
With respect to a motherboard of a server, the power supply behaves like the heart of the motherboard, and the power of the entire motherboard provides efficient and accurate output from each power chip. Therefore, the operation of the power supply inevitably draws attention to the development and test work. Because the power chip can produce partial heat when working, especially for the power chip that the load is great, the heat that produces can be very high under heavy current operating condition, and the power can weaken, the inefficiency than normal atmospheric temperature working property, can stop work even after triggering the excess temperature protection value under the high temperature condition work. Meanwhile, high temperature can influence the precision and stability of the electronic element, and the capacitance value, resistance value and the like of the element can even cause the inefficient work or damage of the electronic element and further cause the non-work of the power chip. Therefore, it is very important for the heat dissipation of the power chip. The current commonly used power chip heat dissipation mode is to add the fin, and the fixed column passes through the fixed orifices on the PCB and fixes it on the chip surface to reach radiating effect.
In the prior art, as shown in fig. 2, the heat sink and the chip are contacted with each other and fixed on the PCB through a fixing post with a spring, which passes through a circular hole of the heat sink and a fixing hole of the PCB, and the fixing hole is also circular, and then the heat sink is fixed by a buckle at the bottom and upward elasticity of the spring. In the prior fixing mode, the fixing column is pressed into the fixing hole of the PCB, and the plastic fastener at the front end has elasticity, so the fixing column can be easily inserted into the hole of the PCB. Meanwhile, due to the elasticity of the spring, the spring cannot be ejected.
In actual work, the following situations are met and the heat radiating fins may need to be detached:
(1) when the performance of a power supply chip is tested, test points are required to be obtained around the chip;
(2) when the chip is damaged and needs to be replaced;
(3) when the chip surface is blown by means of a fan under heavy load.
However, the conventional fixing method is limited to such a fixing structure when the heat sink needs to be removed due to working reasons, and the plate needs to be reversed when the heat sink needs to be removed; meanwhile, the buckle is pressed tightly by a tool so as to be pulled out of the PCB fixing hole; if the mainboard is built or the test environment is built, the disassembly is carried out, so that the workload is particularly large, and the inconvenience is brought; moreover, the PCB is easily rubbed by the tool in the process of pinching the buckle, certain damage can be caused to the buckle, and the safety hazard is realized.
This is a disadvantage of the prior art, and therefore, it is necessary to provide a heat sink fixing structure for solving the above-mentioned drawbacks of the prior art.
Disclosure of Invention
To the above-mentioned fixed knot who is limited to current fin of prior art constructs, need reverse the board when dismantling, compress tightly the buckle with the help of the instrument simultaneously and just can extract from the PCB fixed orifices, when work load is very big, dismantle the defect that more or less can have certain potential safety hazard with the help of the instrument, the utility model provides a fin fixed knot constructs to solve above-mentioned technical problem.
The utility model provides a radiating fin fixing structure, which comprises a radiating fin fixing hole, a PCB fixing hole, a fixing column main body and a spring;
the fixing column main body comprises a pressing part, a clamping part and a middle connecting column, the middle connecting column is connected with the pressing part and the clamping part, the outer diameter of the pressing part and the outer diameter of the clamping part are both larger than the outer diameter of the middle connecting column, and the spring penetrates through the middle connecting column;
the outer diameter of the spring is larger than the inner diameter of the radiating fin fixing hole;
the PCB fixing hole comprises a through area, a movable area and a clamping area;
the clamping part of the fixing column main body can penetrate through the penetrating area, the middle connecting column of the fixing column main body can penetrate through the moving area, and the clamping part of the fixing column main body can be clamped in the clamping area.
Furthermore, the fixing column main body pressing part is in a flat cylindrical shape, and the outer diameter of the fixing column main body pressing part is W;
the outer diameter of the middle connecting column is W3;
the maximum outer diameter of the clamping part of the fixing column main body is W1;
w > outer diameter of spring > W1> W3. The outer diameter of the fixed column main body pressing part is larger than the outer diameter of the spring, so that the spring cannot be separated from the upper end; the outer diameter of the spring is larger than the maximum outer diameter of the clamping part, so that the spring can be sleeved into the middle connecting column from the clamping part.
Furthermore, the clamping part of the fixing column main body is in a step shape and comprises a first step column and a second step column, the second step column is connected with the middle connecting column, and the first step column is connected with the second step column;
the first step pillar and the second step pillar are both cylindrical, the diameter of the first step pillar is W1, the diameter of the second step pillar is W2, and W1> W2> W3. The middle connecting column of the fixing column main body is the thinnest, and the middle connecting column becomes thicker in sequence from the second ladder column to the third ladder column.
Furthermore, the radiating fin fixing hole is in a long strip shape, two ends of the long strip are arcs, and the length of the radiating fin fixing hole is l, and the width of the radiating fin fixing hole is d;
d is greater than W1, and the difference between d and W1 is less than the set first threshold. The fin fixed orifices width is greater than the biggest external diameter of fixed column main part chucking, guarantees that the fixed column main part can pass from the fin fixed orifices.
Furthermore, the PCB fixing hole is in a gourd shape, the large hole of the gourd is a penetrating area of the PCB fixing hole, the small hole of the gourd is a clamping area of the PCB fixing hole, and the waist of the gourd is a movable area of the PCB fixing hole;
the diameter of the large hole of the gourd is D1, the diameter of the small hole of the gourd is D2, and the size of the waist of the gourd is D3;
d1> W1, W1> D2> W2, W2> D3> W3. The calabash-shaped PCB fixing holes enable the fixing column body to penetrate through the large hole of the calabash, the middle connecting column of the fixing column main body can penetrate through the large hole of the calabash from the large hole of the calabash to the small hole of the calabash, and the clamping part of the fixing column main body cannot penetrate through the small hole of the calabash directly.
Further, the whole length of the gourd-shaped PCB fixing hole is l 1;
l1 is equal to fin fixing hole length l; alternatively, l1 is greater than l, but the difference between l1 and l is less than the set second threshold. The length of the PCB fixing hole is equal to that of the radiating fin fixing hole or slightly larger than that of the radiating fin fixing hole, so that the sufficient moving range of the fixing column main body is ensured.
Furthermore, the radiating fin fixing holes are formed in the radiating fins, and radiating fins are further arranged on the radiating fins;
the PCB fixing hole is formed in the PCB, and a power supply chip is further arranged on the PCB;
the fixed column main body clamps the radiating fins and the PCB through the springs to realize position matching of the radiating fins and the power supply chip. The fixing column main body fixes the radiating fins so as to realize the position matching of the radiating fins on the power supply chip and finally realize the radiating purpose.
The fixing process of the radiating fin comprises the following steps: according to the splenium of pressing fixed column main part, because the macroporous diameter of PCB fixed orifices calabash will be greater than the diameter W1 of the first ladder post of fixed column main part, consequently, the fixed column main part can get into from calabash macropore, later push away the fixed column main part to calabash aperture direction, because calabash waist width D3 will be greater than fixed column main part intermediate junction post width W3, consequently, the fixed column main part can get into calabash aperture position, loosen the fixed column main part and press the splenium, because the diameter of calabash aperture will be greater than W2 and be less than W1, consequently the first ladder post of fixed column main part can block at calabash aperture.
The process of disassembling the radiating fin: pressing the fixed column pressing part to separate the fixed column main body from the small hole of the hoist, pushing the fixed column main body to the large hole direction of the hoist to enable the middle connecting column of the fixed column main body to enter the large hole position of the hoist through the waist of the hoist, loosening the fixed column main body pressing part, and separating the first ladder column of the fixed column main body from the large hole position of the hoist under the action of the spring.
The utility model has the advantages that,
the utility model provides a radiating fin fixing structure, which solves the complex operation when the radiating fin is disassembled and saves the workload; the damage to the PCB and the damage to the buckle when the radiating fin is detached 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.
Furthermore, the utility model relates to a principle is reliable, and simple structure has very extensive application prospect.
Therefore, compared with the prior art, the utility model has the substantive characteristics and the progress, and the beneficial effects of the implementation are also obvious.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic illustration of a prior art fixed post;
fig. 3 is a schematic cross-sectional structure view of the fixing column main body of the present invention;
fig. 4 is a plan view of the fixing hole of the heat sink of the present invention;
fig. 5 is a top view of the PCB fixing hole of the present invention;
FIG. 6 is a schematic view of the fixing process of the fixing structure of the heat sink of the present invention;
FIG. 7 is a schematic view of the process of disassembling the heat sink fixing structure of the present invention;
in the figure, 1-the heat sink fixing hole; 2-PCB board fixing holes; 3-fixing the column main body; 4-a spring.
Detailed Description
In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
Example 1:
as shown in fig. 1, a heat sink fixing structure includes a heat sink fixing hole 1, a PCB fixing hole 2, a fixing column main body 3, and a spring 4;
the fixed column main body 3 comprises a pressing part, a clamping part and a middle connecting column, the middle connecting column is connected with the pressing part and the clamping part, the outer diameter of the pressing part and the outer diameter of the clamping part are both larger than the outer diameter of the middle connecting column, and the spring 4 penetrates through the middle connecting column;
the outer diameter of the spring 4 is larger than the inner diameter of the radiating fin fixing hole;
the PCB fixing hole 2 comprises a through area, an active area and a clamping area;
the clamping part of the fixed column main body 3 can penetrate through the penetrating area, the middle connecting column of the fixed column main body 3 can penetrate through the movable area, and the clamping part of the fixed column main body 3 can be clamped in the clamping area;
the pressing part of the fixed column main body 3 is in a flat cylindrical shape, and the outer diameter of the pressing part is W;
the outer diameter of the middle connecting column is W3;
the maximum outer diameter of the clamping part of the fixing column main body 3 is W1;
w > outer diameter of spring > W1> W3; the outer diameter of the fixed column main body pressing part is larger than the outer diameter of the spring, so that the spring cannot be separated from the upper end; the outer diameter of the spring is larger than the maximum outer diameter of the clamping part, so that the spring can be sleeved into the middle connecting column from the clamping part;
as shown in fig. 3, the clamping part of the fixing column main body 3 is stepped, and includes a first step column and a second step column, the second step column is connected with the middle connecting column, and the first step column is connected with the second step column;
the first step column and the second step column are both cylindrical, the diameter of the first step column is W1, the diameter of the second step column is W2, and W1> W2> W3; the middle connecting column of the fixing column main body is thinnest, and the middle connecting column is thickened from the second ladder column to the third ladder column in sequence;
as shown in fig. 4, the heat sink fixing hole 1 is strip-shaped, and two ends of the strip are arcs, the length of the heat sink fixing hole is l, and the width of the heat sink fixing hole is d;
d is greater than W1, and the difference between d and W1 is less than the set first threshold; the width of the radiating fin fixing hole is larger than the maximum outer diameter of the clamping part of the fixing column main body, so that the fixing column main body can penetrate through the radiating fin fixing hole;
as shown in fig. 5, the PCB board fixing hole 2 is gourd-shaped, the large hole of the gourd is the penetrating area of the PCB board fixing hole 2, the small hole of the gourd is the clamping area of the PCB board fixing hole 2, and the waist of the gourd is the moving area of the PCB board fixing hole 2;
the diameter of the large hole of the gourd is D1, the diameter of the small hole of the gourd is D2, and the size of the waist of the gourd is D3;
d1> W1, W1> D2> W2, W2> D3> W3; the fixing holes of the gourd-shaped PCB enable the fixing column bodies to penetrate through the large holes of the gourd, the middle connecting column of the fixing column main body can pass through the waist of the gourd from the large holes of the gourd and then reach the small holes of the gourd, and the clamping part of the fixing column main body cannot penetrate through the small holes of the gourd directly;
the whole length of the gourd-shaped PCB fixing hole 2 is l 1;
l1 is equal to fin fixing hole length l; alternatively, l1 is greater than l, but the difference between l1 and l is less than the set second threshold; the length of the PCB fixing hole is equal to or slightly larger than that of the radiating fin fixing hole, so that the sufficient moving range of the fixing column main body is ensured;
the radiating fin fixing hole 1 is arranged on the radiating fin, and the radiating fin is also arranged on the radiating fin;
the PCB fixing hole 2 is arranged on the PCB, and a power supply chip is also arranged on the PCB;
the fixed column main body 3 clamps the radiating fin and the PCB tightly through the spring 4, so that the radiating fin is matched with the power supply chip in position; the fixing column main body fixes the radiating fins so as to realize the position matching of the radiating fins on the power supply chip and finally realize the radiating purpose.
The fin attachment process is shown in fig. 6: according to the splenium of pressing fixed column main part, because the macroporous diameter of PCB fixed orifices calabash will be greater than the diameter W1 of the first ladder post of fixed column main part, consequently, the fixed column main part can get into from calabash macropore, later push away the fixed column main part to calabash aperture direction, because calabash waist width D3 will be greater than fixed column main part intermediate junction post width W3, consequently, the fixed column main part can get into calabash aperture position, loosen the fixed column main part and press the splenium, because the diameter of calabash aperture will be greater than W2 and be less than W1, consequently the first ladder post of fixed column main part can block at calabash aperture.
The heat sink removal process is shown in fig. 7: pressing the fixed column pressing part to separate the fixed column main body from the small hole of the hoist, pushing the fixed column main body to the large hole direction of the hoist to enable the middle connecting column of the fixed column main body to enter the large hole position of the hoist through the waist of the hoist, loosening the fixed column main body pressing part, and separating the first ladder column of the fixed column main body from the large hole position of the hoist under the action of the spring.
Although the present invention has been described in detail by referring to the drawings in conjunction with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and substance of the present invention, and these modifications or substitutions are intended to be within the scope of the present invention/any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A heat sink fixing structure is characterized by comprising a heat sink fixing hole (1), a PCB fixing hole (2), a fixing column main body (3) and a spring (4);
the fixed column main body (3) comprises a pressing part, a clamping part and a middle connecting column, the middle connecting column is connected with the pressing part and the clamping part, the outer diameter of the pressing part and the outer diameter of the clamping part are both larger than the outer diameter of the middle connecting column, and the spring (4) penetrates through the middle connecting column;
the outer diameter of the spring (4) is larger than the inner diameter of the radiating fin fixing hole;
the PCB fixing hole (2) comprises a penetrating area, a movable area and a clamping area;
the clamping part of the fixing column main body (3) can penetrate through the penetrating area, the middle connecting column of the fixing column main body (3) can penetrate through the moving area, and the clamping part of the fixing column main body (3) can be clamped in the clamping area.
2. The fin fixing structure according to claim 1, wherein the pressing portion of the fixing column main body (3) is in a flat cylindrical shape having an outer diameter W;
the outer diameter of the middle connecting column is W3;
the maximum outer diameter of the clamping part of the fixing column main body (3) is W1;
w > outer diameter of spring > W1> W3.
3. The heat sink fixing structure according to claim 2, wherein the clamping portion of the fixing post body (3) is stepped and includes a first step post and a second step post, and the second step post is connected to the intermediate connecting post, and the first step post is connected to the second step post;
the first step pillar and the second step pillar are both cylindrical, the diameter of the first step pillar is W1, the diameter of the second step pillar is W2, and W1> W2> W3.
4. The fin fixing structure according to claim 2 or 3, wherein the fin fixing hole (1) is in the shape of a long bar, and both ends of the long bar are arcs, the fin fixing hole has a length l and a width d;
d is greater than W1, and the difference between d and W1 is less than the set first threshold.
5. The heat sink fixing structure according to claim 4, wherein the PCB fixing hole (2) is gourd-shaped, the large hole of the gourd is a penetrating region of the PCB fixing hole (2), the small hole of the gourd is a clamping region of the PCB fixing hole (2), and the waist of the gourd is a moving region of the PCB fixing hole (2);
the diameter of the large hole of the gourd is D1, the diameter of the small hole of the gourd is D2, and the size of the waist of the gourd is D3;
D1>W1，W1>D2>W2，W2>D3>W3。
6. the heat sink fixing structure according to claim 5, wherein the gourd-shaped PCB board fixing hole (2) has an overall length of l 1;
l1 is equal to fin fixing hole length l; alternatively, l1 is greater than l, but the difference between l1 and l is less than the set second threshold.
7. The heat sink fixing structure according to claim 1, wherein the heat sink fixing hole (1) is provided in the heat sink, and a heat sink fin is further provided in the heat sink;
the PCB fixing hole (2) is formed in the PCB, and a power supply chip is further arranged on the PCB;
the fixed column main body (3) clamps the radiating fins and the PCB through the springs (4), so that the radiating fins are matched with the power supply chip in position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922043110.7U CN211090407U (en) | 2019-11-22 | 2019-11-22 | Radiating fin fixing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922043110.7U CN211090407U (en) | 2019-11-22 | 2019-11-22 | Radiating fin fixing structure |
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| Publication Number | Publication Date |
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| CN211090407U true CN211090407U (en) | 2020-07-24 |
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| CN201922043110.7U Active CN211090407U (en) | 2019-11-22 | 2019-11-22 | Radiating fin fixing structure |
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| CN (1) | CN211090407U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112533440A (en) * | 2020-10-22 | 2021-03-19 | 苏州浪潮智能科技有限公司 | Cooling fin installation device |
-
2019
- 2019-11-22 CN CN201922043110.7U patent/CN211090407U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112533440A (en) * | 2020-10-22 | 2021-03-19 | 苏州浪潮智能科技有限公司 | Cooling fin installation device |
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