CN101739105B - Heat dissipation fixing seat and its shrapnel holder - Google Patents

Abstract

The invention relates to a heat dissipation fixing seat which comprises a heat dissipation flat plate, a spring plate frame and a heat dissipation module. The spring piece frame comprises a piece body, a plurality of connecting ribs and a plurality of attaching parts. Two corresponding sides of the sheet body respectively extend out of an elastic wing. The bonding part is positioned below the sheet body and is bonded to the heat dissipation flat plate. The connecting ribs are respectively connected with the attaching part and the sheet body and are separated from the sheet body into an accommodating space for accommodating the heat dissipation module. When the heat dissipation flat plate is attached to the heating source and is bent and locks the elastic wings to the circuit board of the heating source, the connecting ribs respectively and vertically apply force on the heat dissipation flat plate, so that the heat dissipation flat plate is effectively attached to the heating source, and the structural integrity of the heat dissipation flat plate can be kept.

Description

Heat dissipation fixing seat and its shrapnel holder

technical field

The present invention relates to a heat dissipation fixing seat, and in particular to a heat dissipation fixing seat fixed to a heat source of a circuit board.

Background technique

One of heat dissipation fixtures for heat sources (such as CPU) in computer devices is designed so that a heat dissipation plate is closely attached to the heat source to increase the contact surface area and improve heat dissipation efficiency. A shrapnel is riveted to the corners of the heat dissipation plate in a radial direction. The shrapnel can be elastically deformed so that its end can be bent downwards and locked to the circuit board configured by the heat source. In this way, through the function of each elastic piece, the heat dissipation plate can be effectively attached to the heat source.

However, when the heat dissipation plate is closely attached to the heat source, and the ends of the elastic pieces are locked on the circuit board, the positions where the elastic pieces contact the heat dissipation plate become the application points where the elastic pieces fall on the heat dissipation plate. As a result, irreversible deformation occurs at the contact position between the heat dissipation plate and each shrapnel, resulting in damage to the heat dissipation plate.

Contents of the invention

The technical problem to be solved by the present invention is to provide a heat dissipation fixing base and its shrapnel holder, which can effectively attach the heat dissipation plate to the heat source and maintain the structural integrity of the heat dissipation plate.

In order to achieve the above object, the present invention proposes a heat dissipation fixing seat, which is suitable for being fixed to a heat source of a circuit board, and includes a heat dissipation plate, a shrapnel frame and a heat dissipation module. The shrapnel frame is composed of a body, two elastic wings, a plurality of connecting ribs and a plurality of bonding parts. The sheet body is located on the first layer of the shrapnel holder, and its elastic wings protrude from both sides of the sheet body. The bonding part is located on the third layer of the shrapnel frame, and is respectively bonded to the cooling plate. In addition, the connecting ribs are located on the second layer of the elastic frame, and are respectively connected between the bonding portion and the sheet body, and these connecting ribs, the sheet body, and the heat dissipation plate can separate an accommodating space. The heat dissipation module is located in the accommodating space and attached to the heat dissipation plate.

In this way, when the user attaches the heat dissipation plate to the heat source and bends the elastic wings toward the third layer, the connecting ribs apply force vertically to the heat dissipation plate, and the ends of the elastic wings are locked to the When the circuit board is described, due to the force generated by the downward stroke of each elastic wing, each connecting rib is forced to apply force vertically to the heat dissipation plate, so that the heat dissipation plate is close to the heat source.

In a preferred embodiment of the present invention, the connecting ribs can be vertically connected to the bonding portion, and are perpendicular to the heat dissipation plate. In this way, since the connecting ribs are closer to the heat source than the elastic wings, when each elastic wing is locked on the circuit board, Forcing the connecting ribs makes the fitting portion press the heat dissipation plate vertically to concentrate and evenly apply force.

According to the above description, the elastic wings of the present invention disclose several modification examples as follows. These elastic wings may be formed on the same elastic frame at the same time, including an arm body and at least one locking portion.

In the first embodiment, the arm body is T-shaped, and the locking part is located at the end of the arm body away from the plate body, and the end of the elastic wing can be locked on the circuit board through the combination of the locking bolt and the locking part.

”形，包括二相平行的第一延伸体及一与第一延伸体相正交的第二延伸体。这些锁固部分别位于臂体远离片体的两端，可通过锁固螺栓分别与锁固部的结合，而将弹性翼的末端锁固于电路板上。In the second embodiment, the arm body is "

"shape, including two parallel first extensions and a second extension perpendicular to the first extension. These locking parts are respectively located at the two ends of the arm away from the sheet, and can be connected with the The combination of the locking part locks the end of the elastic wing on the circuit board.

In the third embodiment, the arm body is strip-shaped, and the locking part is located at the end of the arm body away from the sheet body, and the end of the elastic wing can be locked on the circuit board by combining the locking bolt with the locking part.

In the fourth embodiment, the arm body is in a "V" shape, the intersection of the two phases of the arm body is the end of the elastic wing, and the locking part is located at the intersection of the arm body, and can be combined with the locking part through a locking bolt. And the end of the elastic wing is locked on the circuit board.

The heat dissipation module can have multiple heat dissipation pipes, heat dissipation fins or a heat dissipation metal block.

The heat dissipation fixing seat and the shrapnel frame thereof of the present invention can effectively attach the heat dissipation plate to the heat source, and can maintain the structural integrity of the heat dissipation plate.

Description of drawings

In order to make the embodiments of the present invention more comprehensible, the detailed description of the accompanying drawings is as follows. It should be noted that, according to the general practice of this industry, some features in the drawings have been arbitrarily enlarged or reduced, but not drawn according to the actual scale, so as to facilitate clear discussion. Furthermore, in the description and drawings, the same reference numerals will indicate related or identical features.

In order to make the above and other objects, features, advantages and embodiments of the present invention more obvious and understandable, the detailed description of the accompanying drawings is as follows:

FIG. 1 is a three-dimensional schematic view of a first embodiment of the heat dissipation mount of the present invention.

FIG. 2 is a sectional view of A-A in FIG. 1 .

FIG. 3 is a schematic diagram of operation and a schematic diagram of force distribution in FIG. 1 .

FIG. 4 is a schematic perspective view of a second embodiment of the heat dissipation mounting base of the present invention.

FIG. 5 is a schematic perspective view of a third embodiment of the heat dissipation mounting base of the present invention.

FIG. 6 is a schematic perspective view of a fourth embodiment of the heat dissipation mounting base of the present invention.

FIG. 7 is a cross-sectional view of a heat dissipation fixing seat with a heat dissipation metal block according to the present invention.

FIG. 8 is a cross-sectional view of another heat dissipation fixing seat with heat dissipation metal blocks according to the present invention.

Detailed ways

The present invention provides a heat dissipation fixing seat and its shrapnel holder. Please refer to FIG. 1 and FIG. 2 . FIG. 1 is a three-dimensional schematic diagram of the heat dissipation fixing seat 1 of the present invention. FIG. 2 is a sectional view of A-A in FIG. 1 . The heat dissipation fixing seat 1 is suitable for being fixed to a heat source 70 of a circuit board (such as: objects with heat generation characteristics such as CPU chips, VGA chips, south/north bridge chips), and includes a heat dissipation plate 50, a shrapnel frame 10 and a heat dissipation module 60 . The heat dissipation plate 50 has high heat conduction characteristics, and is made of metal, ceramics, etc., and can be flatly attached to the surface of the heat source 70 to conduct heat from the heat source 70 .

The cross section of the elastic frame 10 is, for example, in the shape of "Π", wherein the "Π" shaped elastic frame 10 can be regarded as the structure of the first layer 11, the second layer 12 and the third layer 13 as shown in the figure. The first layer 11 of the shrapnel holder 10 is mainly composed of a body 110 , and elastic wings 120A protrude from two corresponding sides facing opposite directions. The third layer 13 of the elastic frame 10 has a plurality of bonding portions 130 , and these bonding portions 130 are respectively bonded to the side of the heat dissipation plate 50 away from the heat source 70 . The second layer 12 of the shrapnel holder 10 is located between the first layer 11 and the third layer 13 . A connecting rib 122 is provided between each bonding portion 130 and the side with the elastic wings 120A of each sheet body 110 , and the sheet body 110 , connecting rib 122 , and heat dissipation plate 50 of the elastic sheet holder 10 form an accommodating space 140 .

It should be noted that the cross-section of the above-mentioned shrapnel holder 10 is similar to the shape of "Π" for example only, and the present invention is not limited here. Other embodiments can adjust the shape, bending angle and size of the shrapnel holder 10 according to actual needs. ratio etc.

In this way, please refer to FIG. 2 and FIG. 3 at the same time. FIG. 3 is a schematic diagram of the operation of FIG. 1 , that is, a schematic diagram of its force distribution. When the user attaches the cooling plate 50 to the heat source 70, and bends each elastic wing 120A of the sheet body 110, and makes the end of each elastic wing 120A be locked to a circuit board 75 (such as a main board, etc.) below the heat source 70 ), due to the force generated by the downward stroke of each elastic wing 120A, the connecting rib 122 closer to the heat source 70 is forced to apply a force vertically to the heat dissipation plate 50, so that the heat dissipation plate 50 can vertically press the heat source 70, so as to further Concentrating and evenly applying force on the heat source 70 reduces the probability of deformation of the heat dissipation plate 50 . Therefore, in this embodiment, the heat dissipation plate 50 can be effectively bonded to the heat source 70 with a simple structural design, and since the shrapnel frame 10 can be directly manufactured by a simple method, the heat dissipation fixing seat 1 of this embodiment has a relatively low cost. the cost of.

Please continue to refer to FIG. 2, further speaking, the shrapnel holder 10 is, for example, integrally formed, and each element on it is formed by a metal material plate through a stamping process, and each connecting rib 122 can be vertically attached to the part. Between 130 and the heat dissipation plate 50 , when the bonding portion 130 is fixed on the heat dissipation plate 50 , each connecting rib 122 can fully achieve the purpose of applying force vertically to the heat dissipation plate 50 .

In addition, through the above-mentioned stamping process, as long as the force pressing the heat source 70 can be concentrated and uniformly applied to the heat dissipation plate 50, the shrapnel holder 10 can also provide a suitable shape according to the different positions of the heat source 70 on the circuit board 75. The wings 120A are designed to improve the design flexibility of the heat dissipation mount 1 of the present invention.

Thus, according to the above description, the present invention discloses several kinds of elastic wings 120A (as shown in FIG. 1 ), 120B (as shown in FIG. 4 ) or 120C (as shown in FIG. 5 ). The elastic wings 120A, 120B or 120C at the end are not limited to be symmetrical with each other, therefore, the elastic frame 10 can also have the characteristics of the elastic wings 120A, 120B and 120C at the same time.

In the first embodiment of the present invention, as shown in FIG. 1, the elastic wing 120A includes an arm body 121 and at least one locking portion 127. The arm body 121 is T-shaped, and the bottom of the T-shape is equal to the length of the sheet body 110. The sides are connected, and the T-shaped top, that is, the two corresponding ends away from the other end of the sheet body 110 respectively have a locking portion 127 . The two locking portions 127 are located at the ends of the elastic wings 120A, which can be respectively fixed on the circuit board 75 through a locking bolt 145 (please refer to FIG. 3 ). However, in the first embodiment, the number of corresponding bonding portions 130 and connecting ribs 122 are respectively two, which are respectively located on two sides of the arm body 121 .

In the second embodiment of the present invention, please refer to FIG. 4 , which is a three-dimensional schematic view of the heat dissipation fixing base 1 in the second embodiment of the present invention. The elastic wing 120B includes an arm body 123 and at least one locking portion 127, and the arm body 123 is " ” shape, which can be regarded as two parallel first extensions 128 connected to a second extension 129 perpendicular to it at the same time, and the two first extensions 128 are far away from one end of the second extension 129 and the sheet 110 In connection with each other, two corresponding ends of the second extension body 129 respectively have a locking portion 127. The two locking portions 127 can be respectively fixed on the above-mentioned circuit board 75 by a locking bolt.

For the third embodiment of the present invention, please refer to FIG. 5 , which is a schematic perspective view of the third embodiment of the present invention. The elastic wing 120C includes an arm body 125 and a locking portion 127 . The arm body 125 is, for example, strip-shaped, and the locking portion 127 is located at an end of the arm body 125 away from the sheet body 110 . The locking portion 127 can be fixed on the above-mentioned circuit board through locking bolts.

For a fourth embodiment of the present invention, please refer to FIG. 6 , which is a schematic perspective view of the fourth embodiment of the present invention. The elastic wing 120D includes an arm body 125 and a locking portion 127. The arm body 125 is V-shaped and includes two intersecting third extension bodies 126. The single locking portion 127 is located at the side of the arm body 125 away from the sheet body 110 One end, that is, the intersection of the two third extension bodies 126 , can fix the end of the elastic wing 120D to the above-mentioned circuit board through a locking bolt. In the fourth embodiment, the corresponding bonding portion 130 and the connecting rib 122 are a single triangular piece, which is punched from the arm body 125 .

The above-mentioned multiple embodiments are only examples therein, and any person familiar with the technology can also arbitrarily design an arm body in the shape of Y or L according to the above-mentioned characteristics, and the number and size of the locking parts 127 depend on the fixed elasticity. The ends of the wings 120A, 120B, 120C and 120D depend on the power required by the above-mentioned circuit board 75, and can be a single quantity, as long as the two elastic wings 120A, 120B, 120C and 120D are facing the third layer 13 of the shrapnel holder 10 respectively. After the direction is bent, the force generated by its stroke can be concentrated and evenly applied to the heat dissipation plate 50 .

In addition, as shown in Figures 1 and 4, a heat dissipation module 60 can be placed in the accommodation space 140, a part of the heat dissipation module 60 is attached to the side of the heat dissipation plate 50 away from the heat source 70 in the accommodation space 140, and the rest After partly passing through the accommodating space 140 , it can be connected to another heat dissipation module 60 (not shown in the figure) to dissipate heat from the heat source 70 . Please refer to FIG. 7 and FIG. 8 . FIG. 7 is a cross-sectional view of the heat dissipation fixing base 1 with a heat dissipation metal block 63 according to the present invention. FIG. 8 is a cross-sectional view of another heat dissipation fixing base 1 with a heat dissipation metal block 63 according to the present invention. The heat dissipation module 60 may only be a combination of a plurality of heat dissipation pipes 61, heat dissipation fins 62 or heat dissipation pipes 61, heat dissipation fins 62 and heat dissipation metal blocks 63, wherein the above heat dissipation metal blocks 63 can be filled in the accommodating space 140 and provided for The above-mentioned heat dissipation pipes 61 or heat dissipation fins 62 pass therethrough longitudinally.

Although the present invention has been disclosed above with a preferred embodiment, it is not intended to limit the present invention. Any person familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present invention. , so the protection scope of the present invention should be determined by the scope defined in the claims.

Claims (14)

1. a radiating permanent seat is applicable on the pyrotoxin that is fixed to circuit board, it is characterized in that, comprising:

Heat radiation is dull and stereotyped;

Spring plate bracket comprises:

Lamellar body has two elastic wings;

A plurality of sticking parts fit on the said heat radiation flat board; And

A plurality of connection ribs are connected between said arbitrary sticking part and the said lamellar body, and the dull and stereotyped formation of said these connection ribs, said lamellar body and said heat radiation accommodation space; And

Radiating module is arranged in said accommodation space, and the said heat radiation of fitting is dull and stereotyped,

When said heat radiation flat board was attached on the said pyrotoxin and lock said these elastic wings to said circuit board, it is dull and stereotyped that said these connection ribs force in said heat radiation.

2. radiating permanent seat according to claim 1 is characterized in that, said arbitrary connection rib vertically connects a side of said arbitrary sticking part and the said arbitrary elastic wings of said lamellar body tool.

3. radiating permanent seat according to claim 1 is characterized in that, said arbitrary elastic wings comprises arm body and at least one locking part.

4. radiating permanent seat according to claim 3 is characterized in that, said arm body is the T font, and said locking part is positioned at the end of said arm body away from said lamellar body.

5. radiating permanent seat according to claim 3; It is characterized in that; Said arm body is

shape; Comprise two first ennations that parallel and with said first ennation second ennation of quadrature mutually, and said these locking parts are positioned at the two ends of said second ennation.

6. radiating permanent seat according to claim 3 is characterized in that, said arm body is V-shaped, comprise the 3rd ennation that two-phase is occured simultaneously, and said locking part is positioned at said these the 3rd ennations common factor place mutually.

7. radiating permanent seat according to claim 3 is characterized in that, said arm body is strip, and said locking part is positioned at the end of said arm body away from said lamellar body.

8. radiating permanent seat according to claim 1 is characterized in that said radiating module has a plurality of radiating tubes.

9. radiating permanent seat according to claim 8 is characterized in that said radiating module also comprises the heat radiating metal piece, and said these radiating tubes pass said heat radiating metal piece.

10. spring plate bracket, it is dull and stereotyped smooth to pyrotoxin to be suitable for the compressing heat radiation, it is characterized in that, comprising:

Lamellar body has two elastic wings;

A plurality of sticking parts, the said heat radiation of fitting is dull and stereotyped; And

A plurality of connection ribs are connected between said arbitrary sticking part and the said lamellar body;

To conform to said heat radiation dull and stereotyped when said these sticking parts, and each said these elastic wings is towards the dull and stereotyped direction of said heat radiation when crooked, and said these connection ribs are respectively vertically towards the dull and stereotyped application of force of said heat radiation.

11. spring plate bracket according to claim 10 is characterized in that, said arbitrary elastic wings comprises the arm body that is the T font, and said arm body has the locking part away from an end of said lamellar body.

12. spring plate bracket according to claim 10; It is characterized in that; Said arbitrary elastic wings comprises the arm body that is shape; Said arm body comprise two first ennations that parallel and with said first ennation second ennation of quadrature mutually, and two corresponding end of said second ennation have the locking part respectively.

13. spring plate bracket according to claim 10 is characterized in that, said arbitrary elastic wings comprises the arm body that is strip, and said arm body has the locking part away from an end of said lamellar body.

14. spring plate bracket according to claim 10 is characterized in that, said arbitrary elastic wings comprises V-shaped arm body, comprise the 3rd ennation that two-phase is occured simultaneously, and said these the 3rd ennations has the locking part in the common factor place mutually.

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