Printed circuit board heat dissipation device

Abstract

The invention discloses a heat dissipation device for a printed circuit board. The heat dissipation device comprises a mounting base, a fixed seat, an elastic piece, a bearing piece and the printed circuit board, the middle of the fixing base is hollowed out to form an installation area, one end of the elastic piece is arranged in the installation area through the installation opening, the other end of the elastic piece extends to the outside through the installation opening, the elastic piece is provided with a guide limiting section, and the bearing piece is composed of a bearing section, a bent section and a limiting section, according to the heat dissipation device for the printed circuit board, the heat dissipation fan is arranged at the bottom of the printed circuit board, so that heat dissipation treatment can be performed on the printed circuit board in a targeted manner when the printed circuit board works, and the printed circuit board is prevented from being damaged due to long-time high-temperature work. Meanwhile, the bearing piece and the elastic piece are matched to elastically buffer the printed circuit board, it can be guaranteed that when the printed circuit board is installed on some mobile equipment, the adverse effect of vibration on the printed circuit board is avoided, and the service life of the printed circuit board is prolonged.

Description

Technical Field

[0001] The present invention relates to printed circuit board technology, and in particular to a heat dissipation device for a printed circuit board. Background Art

[0002] A printed circuit board, also known as a printed wiring board, is a provider of electrical connections for electronic components. In the past decade or so, the printed circuit board manufacturing industry in China has developed rapidly, with both the total output value and the total output ranking first in the world. Due to the rapid changes in electronic products and the price war that has changed the structure of the supply chain, China, with its advantages in industrial distribution, cost, and market, has become the most important production base for printed circuit boards globally.

[0003] Currently, most of the existing printed circuit boards only use the method of spraying multiple layers of coatings for protection, lacking means for active cooling. When the printed circuit board is used for a long time, the heat generated by itself accumulates, which in turn causes the coating on its surface to crack, resulting in the inability to discharge the heat accumulated on the printed circuit board, making it difficult to dissipate heat effectively, and ultimately causing the printed circuit board to short - circuit and burn out.

[0004] When a printed circuit board is in use, although most of the existing printed circuit boards have a heat dissipation function, they have the disadvantage of poor heat dissipation effect. At the same time, when electrical components on the printed circuit board need to be repaired, there are problems of inconvenient disassembly and assembly. When a large current passes through the device, a large amount of heat is generated, and when the printed circuit board body is subjected to vibrations generated by the installation device, there is a lack of corresponding protection measures, which reduces the service efficiency of the heat - dissipating printed circuit board and further reduces its practicality.

[0005] CN112867231B discloses a multi - layer printed circuit board that is conducive to heat dissipation, which uses an air - cooling heat dissipation component, a first water - cooling heat dissipation component, and a second water - cooling heat dissipation component for heat dissipation treatment. However, it uses a rigid connection, and when subjected to strong vibrations, it is easy to cause damage to the heat dissipation components, resulting in a decrease in the heat dissipation effect and affecting the normal operation of the printed circuit board. Summary of the Invention

[0006] In order to solve the above - mentioned defects existing in the prior art, the present invention provides a heat dissipation device for a printed circuit board.

[0007] The technical solution of the present invention is realized as follows:

[0008] A heat dissipation device for a printed circuit board, comprising:

[0009] A mounting base, on which symmetrically arranged ventilation holes are provided, and heat dissipation fans are installed on the ventilation holes;

[0010] A fixing seat symmetrically arranged on the mounting base, wherein the middle of the fixing seat is hollowed out to form a mounting area, and a mounting opening is arranged on a side of the fixing seat opposite to the fixing seat, and the mounting opening is connected to the mounting area;

[0011] An elastic member is arranged on the fixing seat, one end of the elastic member is arranged in the installation area through the installation opening, and the other end extends to the outside through the installation opening, the elastic member is provided with a guide limit section, a punching opening is provided in the middle of the guide limit section, an extension section is provided in the punching opening, and a winding section is provided on the extension section, and the winding section is located at the upper end of the guide limit section;

[0012] A bearing member installed in cooperation with the elastic member, the bearing member is composed of a bearing section, a symmetrically arranged bending section and a limiting section, the bearing section and the bending section are connected by a first arc section, the bending section and the limiting section are connected by a second arc section, the bending section acts on the winding section and is supported by the winding section, the guide limiting section and the limiting section are in force-coordinated contact, and a limiting area for accommodating the guide limiting section is formed between the bending section and the limiting section;

[0013] And a printed circuit board installed on the bearing component, wherein the four corners of the printed circuit board are installed on the bearing section through bolts, and the printed circuit board is kept at the upper end of the heat dissipation fan.

[0014] In the present invention, the mounting base is provided with a plurality of symmetrically arranged strip holes, the fixing seat is provided with a positioning arm cooperating with the strip holes, the positioning arm is provided with an undercut portion, and the width of the strip hole is greater than the width of the positioning arm.

[0015] In the present invention, the fixed seat is composed of an upper seat plate, a lower seat plate, a left side plate, a right side plate, a rear baffle and a front baffle, the mounting port is arranged between the front baffle and the upper seat plate, the left side plate and the right side plate are consistent, and the thickness is greater than the thickness of the upper seat plate, the lower seat plate, the rear baffle and the front baffle.

[0016] In the present invention, an opening groove is provided on the left side plate and the right side plate, and the opening groove is communicated with the installation port.

[0017] In the present invention, the elastic member is composed of a first mounting segment, a second mounting segment and a third mounting segment, the extension segment and the guide limit segment are arranged on the first mounting segment, the first mounting segment is arranged parallel to the third mounting segment, the second mounting segment connects the first mounting segment and the third mounting segment, and is kept vertically arranged with the first mounting segment and the third mounting segment, and the extension segment and the guide limit segment are arranged at an interval.

[0018] In the present invention, matching notches are provided on both sides of the elastic member, and the matching notches are located on the second installation segment, the third installation segment and part of the first installation segment, and the first installation segment is installed in matching with the opening groove.

[0019] In the present invention, an elastic arm is provided at the lower end of the first mounting section. A first elastic region is formed between the elastic arm and the first mounting section, and a second elastic region is formed between the elastic arm and the second mounting section. The vertical height of the elastic arm in the natural state is greater than the height of the mounting region.

[0020] In the present invention, the length of the third mounting section is less than the height of the mounting opening.

[0021] In the present invention, a stamping hole is provided on the bending section. A pressing section is provided in the stamping hole. The pressing section is connected to the inner wall of the stamping hole through a third arc section. A holding region is formed between the pressing section and the limiting section. The pressing section acts on the winding section.

[0022] In the present invention, a compression gap is formed between the end of the winding section and the extension section.

[0023] Implementing this printed circuit board heat dissipation device of the present invention has the following beneficial effects: The printed circuit board heat dissipation device can perform targeted heat dissipation on the printed circuit board during operation by providing a heat dissipation fan at the bottom of the printed circuit board, avoiding damage to the printed circuit board caused by long-term high-temperature operation. At the same time, it also cooperates with the carrier and the elastic member to achieve elastic buffering for the printed circuit board, which can ensure that when the printed circuit board is installed on some mobile devices, the adverse effects of vibration on the printed circuit board are avoided, and the service life of the printed circuit board is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the printed circuit board heat dissipation device of the present invention;

[0025] Figure 2 is Figure 1 the front view of;

[0026] Figure 3 is Figure 1 the exploded view of;

[0027] Figure 4 is Figure 3 the schematic structural diagram of the carrier in;

[0028] Figure 5 is Figure 4 the front view of;

[0029] Figure 6 is Figure 3 the schematic structural diagram of the elastic member in;

[0030] Figure 7 is Figure 6 the structural diagram in another direction of;

[0031] Figure 8 for Figure 6 The main view;

[0032] Figure 9 for Figure 3 Schematic diagram of the fixed seat structure;

[0033] Figure 10 for Figure 9 sectional view of;

[0034] Figure 11 for Figure 3 Schematic diagram of the mounting base structure;

[0035] Figure 12 It is a schematic diagram of the installation state of the installation base, the fixing base, the elastic member and the bearing member in the present invention;

[0036] Figure 13 for Figure 12 A local enlarged view of point A in FIG.

[0037] Figure 14 It is a schematic diagram of the fixing seat and the elastic member in the present invention when they are not installed.

[0038] In the figure: mounting base 1, fixing base 2, elastic member 3, bearing member 4, printed circuit board 5, ventilation hole 6, cooling fan 7, bolt 8, bearing section 9, cooling opening 10, mounting protrusion 11, supporting protrusion 12, mounting area 13, mounting opening 14, strip hole 15, positioning arm 16, undercut portion 17, upper seat plate 18, lower seat plate 19, left side plate 20, right side plate 21, rear baffle 22, front baffle 23, first mounting section 24, opening groove 25, guide limit section 26, stamping opening 27, extension section 28, winding section 29, second mounting section 30, third mounting section 31, compression gap 32, pressure section 33, elastic arm 34, holding area 35, first elastic area 36, ​​second elastic area 37, bending section 38, limiting section 39, first arc section 40, second arc section 41, limit area 42, matching notch 43, stamping hole 44, third arc section 45. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0040] like Figures 1 to 14As shown, the printed circuit board heat dissipation device of the present invention comprises a mounting base 1, a fixing base 2, an elastic member 3, a bearing member 4 and a printed circuit board 5. The fixing base 2 is arranged at both ends of the mounting base 1, and the elastic member 3 is installed on the fixing base 2, the bearing member 4 is installed on the elastic members 3 symmetrically arranged at two places, and the printed circuit board 5 is installed on the bearing member 4. Symmetrically arranged ventilation holes 6 are provided on the mounting base 1, and a heat dissipation fan 7 is installed on the ventilation holes 6. The heat dissipation fan 7 is located between the two fixing bases 2, and keeps the fixing base 2 at the lower end of the bearing member 4 and the printed circuit board 5. The heat dissipation fan 7 takes in air from the bottom and blows upwards to dissipate the printed circuit board 5 at the upper end. At the same time, the printed circuit board 5 can be elastically buffered through the support of the elastic member 3 and the bearing member 4, thereby avoiding the vibration of some moving equipment.

[0041] The printed circuit board 5 is mounted on the carrier 4, and the four corners of the printed circuit board 5 are mounted on the carrier section 9 by bolts 8, and the printed circuit board 5 is kept at the upper end of the heat dissipation fan 7. A heat dissipation opening 10 is provided on the carrier section 9 on the carrier 4, and the heat dissipation opening 10 is located at the lower end of the printed circuit board 5. Mounting protrusions 11 are provided at the four corners of the heat dissipation opening 10, and the printed circuit board 5 is mounted on the mounting protrusions 11 by bolts 8. In addition, a supporting protrusion 12 is provided in the middle of the heat dissipation opening 10, and the supporting protrusion 12 can support the printed circuit board 5.

[0042] Example 1

[0043] The fixing seat 2 is symmetrically arranged on the mounting base 1, the middle of the fixing seat 2 is hollowed out to form a mounting area 13, and a mounting opening 14 is arranged on the side of the fixing seat 2 facing away from the fixing seat 2, and the mounting opening 14 is connected to the mounting area 13. The mounting area 13 is used to install the elastic member 3, so that one end of the elastic member 3 is arranged therein, and the other end extends to the external support bearing member 4.

[0044] The mounting base 1 is provided with a plurality of symmetrically arranged strip holes 15, the fixing base 2 is provided with a positioning arm 16 matched with the strip holes 15, the positioning arm 16 is provided with an undercut 17, and the width of the strip hole 15 is greater than the width of the positioning arm 16. When the fixing base 2 is installed, the positioning arm 16 is directly matched with the strip hole 15, so that the positioning arm 16 is installed in the strip hole 15, so that quick installation is achieved and the stability of the fixing base 2 is maintained.

[0045] The fixed seat 2 is composed of an upper seat plate 18, a lower seat plate 19, a left side plate 20, a right side plate 21, a rear baffle 22 and a front baffle 23. The installation opening 14 is arranged between the front baffle 23 and the upper seat plate 18. The left side plate 20 and the right side plate 21 are the same, and their thickness is greater than the thickness of the upper seat plate 18, the lower seat plate 19, the rear baffle 22 and the front baffle 23. The relatively thick left side plate 20 and right side plate 21 are used to carry the first installation section 24, so that the first installation section 24 can support the bearing member 4 and the first installation section 24 will not be deformed due to force.

[0046] An opening groove 25 is provided on the left side plate 20 and the right side plate 21, and the opening groove 25 communicates with the installation opening 14. The opening groove 25 is used to cooperate with the elastic member 3, so that a part of the first installation section 24 of the elastic member 3 can be arranged in the opening groove 25, and the position of the elastic member 3 is restricted and the elastic member 3 is supported through the opening groove 25.

[0047] Embodiment 2

[0048] The elastic member 3 is arranged on the fixed seat 2. One end of the elastic member 3 is arranged in the installation area 13 through the installation opening 14, and the other end extends to the outside through the installation opening 14. The elastic member 3 is provided with a guiding and limiting section 26. There is a stamping opening 27 in the middle of the guiding and limiting section 26. An extension section 28 is arranged in the stamping opening 27, and a winding section 29 is arranged on the extension section 28. The winding section 29 is located at the upper end of the guiding and limiting section 26.

[0049] The elastic member 3 is composed of a first installation section 24, a second installation section 30 and a third installation section 31. The extension section 28 and the guiding and limiting section 26 are arranged on the first installation section 24. The first installation section 24 is arranged in parallel with the third installation section 31. The second installation section 30 connects the first installation section 24 and the third installation section 31 and is perpendicular to the first installation section 24 and the third installation section 31. The extension section 28 and the guiding and limiting section 26 are arranged at intervals.

[0050] A compression gap 32 is formed between the end of the winding section 29 and the extension section 28. When the winding section 29 is subjected to the pressure from the pressing section 33 on the bearing member 4, the end of the winding section 29 moves into the compression gap 32 and finally contacts the extension section 28 to support the installation external force from the pressing section 33.

[0051] An elastic arm 34 is arranged at the lower end of the first installation section 24. A first elastic region 36 is formed between the elastic arm 34 and the first installation section 24. A second elastic region 37 is formed between the elastic arm 34 and the second installation section 30. The vertical height of the elastic arm 34 in the natural state is greater than the height of the installation area 13.

[0052] The elastic arm 34 can be deformed by force to limit the installation of the elastic member 3 in the installation area 13. As Figure 14As shown, when the elastic member 3 needs to be installed inside the fixing seat 2, the second installation section 30 is first set upward and the guide limit section 26 is set downward. Then the elastic member 3 is moved in the direction of F1, so that the third installation section 31 and the second installation section 30 enter the installation area 13 through the installation opening 14. At this time, the elastic arm 34 is squeezed by the outer wall of the fixing seat 2 and deformed. Then the elastic member 3 is rotated around the direction of F2 to push the elastic member 3 into the installation area 13. At this time, the elastic arm 34 will be blocked by the front baffle 23 and deformed by force, and deformed into the first elastic area 36, ​​so that the second elastic area 37 is enlarged. When the elastic member 3 is continuously inserted, the elastic arm 34 can be kept over the front baffle 23 until the elastic arm 34 enters the installation area 13 completely.

[0053] Example 3

[0054] The bearing member 4 is installed in cooperation with the elastic member 3, and the bearing member 4 is composed of a bearing section 9, a symmetrically arranged curved section 38, and a limiting section 39. The bearing section 9 is connected to the curved section 38 by a first arc section 40, and the curved section 38 is connected to the limiting section 39 by a second arc section 41. The curved section 38 acts on the winding section 29 and is supported by the winding section 29. The guide limit section 26 is in force-coordinated contact with the limiting section 39, and a limiting area 42 for accommodating the guide limit section 26 is formed between the curved section 38 and the limiting section 39.

[0055] Matching notches 43 are provided on both sides of the elastic member 3, and the matching notches 43 are located on the second mounting section 30, the third mounting section 31 and part of the first mounting section 24, and the first mounting section 24 is matched with the opening groove 25 for installation. The length of the matching notches 43 is just matched with the length of the mounting area 13, which facilitates the installation of the elastic member 3.

[0056] The length of the third installation section 31 is smaller than the height of the installation opening 14 , so that the third installation section 31 can be easily inserted into the installation area 13 through the installation opening 14 .

[0057] A punching hole 44 is provided on the bending section 38 , and a pressure section 33 is provided in the punching hole 44 . The pressure section 33 is connected to the inner wall of the punching hole 44 via a third arc section 45 . A retaining area 35 is formed between the pressure section 33 and the limiting section 39 , and the pressure section 33 acts on the winding section 29 .

[0058] When installing the carrier 4, the carrier 4 is directly set on the elastic member 3 by pressing. First, keep the limiting section 39 on the winding section 29. The limiting section 39 is blocked by the winding section 29, keeping the bending section 38 deformed under force and opening to both sides. Then, make the limiting section 39 cross over the winding section 29, and then keep the limiting section 39 in contact with the upper surface of the guiding limiting section 26. When moving down further, make the pressing section 33 contact the winding section 29. The pressing section 33 is blocked by the winding section 29 and deforms upward, making the limiting section 39 cross over the guiding limiting section 26 and guiding the limiting section 39 into the limiting area 42. Under the elastic force of the pressing section 33 and the winding section 29, the carrier 4 is kept under an upward elastic force, achieving a buffering effect when the printed circuit board 5 is vibrated and avoiding the influence of vibration on the printed circuit board 5. At the same time, it cooperates with the cooling fan 7 to dissipate heat from the printed circuit board 5, facilitating installation and disassembly.

[0059] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A printed circuit board heat dissipation device, characterized in that: include: a mounting base, wherein the mounting base is provided with symmetrically arranged ventilation holes, and a heat dissipation fan is installed on the ventilation holes; A fixing seat symmetrically arranged on the mounting base, wherein the middle of the fixing seat is hollowed out to form a mounting area, and a mounting opening is arranged on a side of the fixing seat opposite to the fixing seat, and the mounting opening is connected to the mounting area; An elastic member is arranged on the fixing seat, one end of the elastic member is arranged in the installation area through the installation opening, and the other end extends to the outside through the installation opening, the elastic member is provided with a guide limit section, a punching opening is provided in the middle of the guide limit section, an extension section is provided in the punching opening, and a winding section is provided on the extension section, and the winding section is located at the upper end of the guide limit section; A bearing member installed in cooperation with the elastic member, the bearing member is composed of a bearing section, a symmetrically arranged bending section and a limiting section, the bearing section and the bending section are connected by a first arc section, the bending section and the limiting section are connected by a second arc section, the bending section acts on the winding section and is supported by the winding section, the guide limiting section and the limiting section are in force-coordinated contact, and a limiting area for accommodating the guide limiting section is formed between the bending section and the limiting section; And a printed circuit board installed on the bearing component, wherein the four corners of the printed circuit board are installed on the bearing section through bolts, and the printed circuit board is kept at the upper end of the heat dissipation fan.

2. The printed circuit board heat dissipation device according to claim 1, characterized in that: The mounting base is provided with a plurality of symmetrically arranged strip holes, the fixing seat is provided with a positioning arm matched with the strip holes, the positioning arm is provided with an undercut portion, and the width of the strip hole is greater than the width of the positioning arm.

3. The printed circuit board heat dissipation device according to claim 1, characterized in that: The fixed seat is composed of an upper seat plate, a lower seat plate, a left side plate, a right side plate, a rear baffle and a front baffle, the mounting opening is arranged between the front baffle and the upper seat plate, the left side plate and the right side plate are consistent, and the thickness is greater than the thickness of the upper seat plate, the lower seat plate, the rear baffle and the front baffle.

4. The printed circuit board heat dissipation device according to claim 3, characterized in that: The left side plate and the right side plate are provided with an opening groove, and the opening groove is communicated with the installation port.

5. The printed circuit board heat dissipation device according to claim 4, characterized in that: The elastic member consists of a first mounting segment, a second mounting segment and a third mounting segment. The extension segment and the guide limit segment are arranged on the first mounting segment. The first mounting segment is arranged parallel to the third mounting segment. The second mounting segment connects the first mounting segment and the third mounting segment and remains vertically arranged with the first mounting segment and the third mounting segment. The extension segment and the guide limit segment are arranged at an interval.

6. The printed circuit board heat dissipation device according to claim 5, characterized in that: Matching notches are provided on both sides of the elastic member, and the matching notches are located on the second mounting section, the third mounting section and part of the first mounting section, and the first mounting section is matched and installed with the opening groove.

7. The printed circuit board heat dissipation device according to claim 6, characterized in that: An elastic arm is provided at the lower end of the first mounting section, a first elastic area is formed between the elastic arm and the first mounting section, a second elastic area is formed between the elastic arm and the second mounting section, and a vertical height of the elastic arm in a natural state is greater than a height of the mounting area.

8. The printed circuit board heat dissipation device according to claim 7, characterized in that: The length of the third installation section is smaller than the height of the installation opening.

9. The printed circuit board heat dissipation device according to claim 1, characterized in that: A punching hole is provided on the bending section, a pressure section is provided in the punching hole, the pressure section is connected to the inner wall of the punching hole via a third arc section, a holding area is formed between the pressure section and the limiting section, and the pressure section acts on the winding section.

10. The printed circuit board heat dissipation device according to claim 1, characterized in that: A compression gap is formed between the end of the winding section and the extending section.

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