HDI printed circuit board with fine line buried holes

Abstract

The utility model relates to the technical field of circuit boards, and discloses an HDI printed circuit board with fine line buried holes, which comprises a board body assembly, a radiating assembly and a fixing assembly, the board body assembly comprises a circuit board body, a bayonet is arranged at the side part of the circuit board body, the radiating assembly comprises a radiator movably connected at the bottom of the circuit board body, and the fixing assembly is arranged on the radiator. The circuit board comprises a circuit board body, a radiator is installed at the bottom of the circuit board body, a sliding rail protruding strip is arranged on the side portion of the radiator, the fixing assembly comprises a corner plate movably connected to the side portion of the circuit board body, a sliding rail groove is formed in one end of the corner plate, and the sliding rail groove is slidably connected to the side portion of the sliding rail protruding strip. The heat conduction panel is attached to the bottom of the circuit board body, when a heat source is generated, the heat source is absorbed through the heat conduction panel, and the heat source is exhausted from the exhaust groove through operation of the radiator, so that a good heat dissipation effect is achieved, a circuit is prevented from being heated, aged and damaged, and the service life of the circuit board is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, and specifically relates to an HDI printed circuit board with fine line buried vias. Background Art

[0002] HDI printed circuit boards are usually used in electronic devices that require higher connection density and smaller size. Fine line buried vias are a key part of HDI technology, which allows for more connections in a smaller space. It has the advantages of high-strength connection, fine line buried vias, hierarchical structure, and wide range of applications. During the manufacturing process, through design, drilling, lamination, electroplating, soldering pads, and copper cladding, and finally through testing and quality control, it is ensured that the circuit board meets the design requirements and reliability standards.

[0003] Currently, the existing HDI printed circuit boards with fine line buried vias are installed in a closed housing, and overall heat generation will occur under high load conditions. Although the generated heat temperature is not high, long-term operation under high load will still cause the circuit board lines to age and be damaged. Moreover, at present, the circuit board is fixed in the housing by screwing, and although a good fixing effect can be achieved after installation, it is not convenient for subsequent maintenance, disassembly, and assembly work, and there is the complexity of disassembly and assembly. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an HDI printed circuit board with fine line buried vias, which has the advantages of being able to effectively dissipate the heat source generated by the circuit board and being convenient for disassembling and assembling the circuit board, etc., and solves the problems that the circuit board will generate heat under high load operation at present, which is likely to cause line aging and damage in the long term, and at the same time, using screws for installation is not convenient for subsequent disassembly and assembly.

[0005] To achieve the above object, the utility model provides the following technical solution: an HDI printed circuit board with fine line buried vias, including a board body assembly, a heat dissipation assembly, and a fixing assembly. The board body assembly includes a circuit board body, and a bayonet is opened on the side of the circuit board body. The circuit board body is specifically an HDI printed circuit board with fine line buried vias, which can achieve higher connection density and smaller size.

[0006] The heat dissipation assembly includes a radiator movably connected to the bottom of the circuit board body, and a slide rail rib is arranged on the side of the radiator. When the circuit board body is operating, the radiator automatically starts to follow, and can dissipate the heat source generated by the circuit board body.

[0007] The fixing component includes a corner plate movably connected to the side of the circuit board body. A slide rail groove is formed at one end of the corner plate, and the slide rail groove is slidably connected to the side of the slide rail rib. At the same time, a mounting block is fixed on the corner plate, and a hook is arranged on the mounting block. The hook is clamped in the bayonet. The corner plate is arranged at a right angle, and its inner side is fitted to the shape of the circuit board body. Slide rail ribs are arranged at corresponding positions on both sides of both ends of the radiator, and a slide rail groove is formed at one end of the corner plate. By slidably connecting the slide rail groove to the side of the slide rail rib, the corner plate can be smoothly pushed and pulled on the side of the radiator. When the corner plate is pushed so that it completely sleeved on the side of the slide rail rib, the hook is clamped in the bayonet, realizing the fixation of the circuit board body above the radiator. When the corner plate is pulled to move towards one end of the slide rail rib, the hook disengages from the bayonet. At this time, the circuit board body is in a fixed state, and thus disassembly and assembly can be carried out.

[0008] When installing the HDI printed circuit board with fine circuit buried vias, by placing the circuit board body on the radiator, the positioning holes are aligned with the stabilizing holes, and the tension springs are fitted between the circuit board body and the radiator. At this time, the positioning rods are inserted into the two round holes and sleeved inside the tension springs, and the fixing screws are exposed. At the same time, corner plates are installed at the four corners of the radiator, so that the slide rail grooves formed in the corner plates are slidably connected to the slide rail ribs. By placing the assembled circuit board body and radiator at the position to be installed, at this time, by rotating the adjustment knob, the fixing screws are drilled into the housing to fix the radiator. After the fixation is completed, by pressing down the circuit board body, the tension springs are tightened. By pulling the corner plates at the corners, the mounting blocks are fitted to the side of the circuit board body, and at the same time, the hooks are clamped in the bayonets to fix the circuit board body. At this time, the bottom of the circuit board body is attached to the heat conduction panel on the radiator. When the circuit board body operates, the radiator operates synchronously, causing the internal cooling fan to rotate, and discharging the heat source absorbed by the heat conduction panel from the exhaust slot.

[0009] As a further improvement of the above solution, positioning holes are formed on the circuit board body, and stabilizing holes are formed on the radiator at the same time. A positioning rod is movably sleeved in the positioning holes and the stabilizing holes.

[0010] Through the above technical solution, the diameter of the side of the positioning rod is fitted to the diameters in the positioning holes and the stabilizing holes, improving the stability of the circuit board body and the radiator.

[0011] As a further improvement of the above solution, an adjustment knob is fixed at one end of the positioning rod, and a fixing screw is fixed at the other end.

[0012] Through the above technical solution, by rotating the adjustment knob, the positioning rod drives the fixing screw to rotate simultaneously, so that the fixing screw is threadedly connected to the housing at the required installation position, and the installation positions of the radiator and the circuit board body are set.

[0013] As a further improvement of the above solution, a cooling fan is installed inside the radiator, and an exhaust slot is provided on the side of the radiator.

[0014] Through the above technical solution, when the circuit board body operates, the radiator operates synchronously. Through the operation of the internal cooling fan, the fan blades rotate, and the heat source is discharged from the exhaust slot.

[0015] As a further improvement of the above solution, a heat-conducting panel is fixed on the radiator and is attached to the bottom of the circuit board body.

[0016] Through the above technical solution, the heat-conducting panel is specifically made of silicone material and has the function of absorbing the heat source, realizing the absorption of the heat source generated by the circuit board body and conducting the heat source into the radiator.

[0017] As a further improvement of the above solution, a tension spring is fixed in the stabilizing hole. The tension spring is movably sleeved on the side of the positioning rod, and both ends are attached between the circuit board body and the radiator.

[0018] Through the above technical solution, after the hook disengages from the bayonet, under the upward pushing action of the tension spring when it unfolds, the circuit board body can be jacked up and separated from the radiator, which is convenient for disassembling the circuit board body.

[0019] As a further improvement of the above solution, one end of the corner plate is threadedly connected with a locking rod, and one end of the locking rod is attached to the slide rail rib.

[0020] Through the above technical solution, when the corner plate is completely attached to the corner of the circuit board body, by rotating the locking rod, the front end of the locking rod is closely attached to the slide rail rib to fix between the corner plate and the circuit board body and prevent the corner plate from loosening.

[0021] As a further improvement of the above solution, a stabilizing sleeve hole is provided on the side of the radiator, and a stabilizing sleeve rod is fixed at one end of the corner plate. The stabilizing sleeve rod is movably sleeved in the stabilizing sleeve hole.

[0022] Through the above technical solution, when the corner plate is pushed and pulled, the stabilizing sleeve rod is in the stabilizing sleeve hole, improving the stability of the pushing and pulling of the corner plate.

[0023] Compared with the prior art, the present utility model provides an HDI printed circuit board with fine line buried vias, and has the following beneficial effects:

[0024] 1. The HDI printed circuit board with fine line buried holes has a heat sink installed at the bottom of the circuit board body, and a heat conduction panel installed on the heat sink. The heat conduction panel is attached to the bottom of the circuit board body. When heat source is generated, the heat source is absorbed by the heat conduction panel and discharged from the exhaust slot through the operation of the heat sink, thereby achieving a good heat dissipation effect, avoiding damage to the circuit due to heat aging, and prolonging the service life of the circuit board.

[0025] 2. The HDI printed circuit board with fine line buried holes is installed with a corner plate on the side of the radiator, and a mounting block is installed on the corner plate. A hook is provided on the mounting block, and a bayonet is provided on the side of the circuit board body. By pressing down the circuit board, the tension spring is tightened, and then the corner plate is pushed to make the hook engage with the bayonet, so that the bottom of the circuit board body is tightly attached to the top of the radiator, thereby realizing quick installation. After pulling the corner plate to make the hook disengage from the bayonet, the circuit board body is lifted up under the push of the tension spring, so that the edge of the circuit board can be disassembled and repaired, further improving the flexibility and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall external structure of the device of the utility model;

[0027] Figure 2 This is a schematic diagram of the overall structure of the top of the radiator of the utility model;

[0028] Figure 3 This is a schematic diagram of the overall structure of the bottom of the radiator of the utility model;

[0029] Figure 4 For this utility model Figure 1 Schematic diagram of the structure at A in the middle;

[0030] Figure 5 It is a schematic diagram of the overall structure of the fixing component of the utility model.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1. Board assembly; 101. Circuit board body; 102. Bayonet; 103. Positioning hole; 104. Positioning rod; 105. Adjustment knob; 106. Fixing screw;

[0033] 2. Heat dissipation assembly; 201. Radiator; 202. Heat dissipation fan; 203. Exhaust slot; 204. Heat conduction panel; 205. Stability hole; 206. Tension spring; 207. Slide rail convex strip; 208. Stability sleeve hole;

[0034] 3. Fixing assembly; 301. Corner plate; 302. Slide rail groove; 303. Locking rod; 304. Stabilizing sleeve rod; 305. Mounting block; 306. Hook. Detailed implementation mode

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model. Embodiment 1

[0036] Please refer to Figures 1-5 As shown, the HDI printed circuit board with fine-line buried vias proposed in this embodiment includes a board body assembly 1, a heat dissipation assembly 2, and a fixing assembly 3. The board body assembly 1 includes a circuit board body 101. A bayonet 102 is opened on the side of the circuit board body 101. The circuit board body 101 is specifically an HDI printed circuit board with fine-line buried vias, which can achieve higher connection density and smaller size.

[0037] The heat dissipation assembly 2 includes a radiator 201 movably connected to the bottom of the circuit board body 101. A slide rail rib 207 is arranged on the side of the radiator 201. When the circuit board body 101 is operating, the radiator 201 automatically starts following, and can dissipate the heat source generated by the circuit board body 101.

[0038] The fixing assembly 3 includes a corner plate 301 movably connected to the side of the circuit board body 101. A slide rail groove 302 is opened at one end of the corner plate 301. The slide rail groove 302 is slidably connected to the side of the slide rail rib 207. At the same time, a mounting block 305 is fixed on the corner plate 301, and a hook 306 is arranged on the mounting block 305. The hook 306 is clamped in the bayonet 102. The corner plate 301 is arranged at a right angle, and the inner side thereof coincides with the shape of the circuit board body 101. Slide rail ribs 207 are arranged at corresponding positions on both sides of both ends of the radiator 201, and a slide rail groove 302 is opened at one end (the end connected to the slide rail rib 207) of the corner plate 301. By slidably connecting the slide rail groove 302 to the side of the slide rail rib 207, the corner plate 301 can be smoothly pushed and pulled on the side of the radiator 201. When the corner plate 301 is pushed so that it completely sleeves on the side of the slide rail rib 207, the hook 306 is clamped in the bayonet 102, realizing the fixation of the circuit board body 101 above the radiator 201 (at this time, the bottom of the circuit board body 101 is completely attached to the radiator 201). When the corner plate 301 is pulled to move towards one end of the slide rail rib 207, the hook 306 disengages from the bayonet 102. At this time, the circuit board body 101 is in a fixed state, and thus can be disassembled and assembled.

[0039] The working principle of the HDI printed circuit board with buried fine lines in this embodiment is as follows: When in use, by placing the circuit board body 101 on the radiator 201, the positioning holes 103 are aligned with the stabilizing holes 205, and the tension springs 206 are attached between the circuit board body 101 and the radiator 201. At this time, the positioning rod 104 is inserted into the two round holes and sleeved inside the tension spring 206, and the fixing screw 106 is exposed. At the same time, corner plates 301 are installed at the four corners of the radiator 201, so that the slide rail grooves 302 opened in the corner plates 301 are slidably connected to the slide rail ridges 207. By placing the assembled circuit board body 101 and radiator 201 at the position where installation is required, at this time, by rotating the adjustment knob 105, the fixing screw 106 is drilled into the housing to fix the radiator 201. After the fixing is completed, by pressing down the circuit board body 101, the tension spring 206 is tightened. By pulling the corner plates 301 at the corners, the mounting blocks 305 are attached to the side of the circuit board body 101, and at the same time, the hooks 306 are snapped into the bayonet holes 102 to fix the circuit board body 101. At this time, the bottom of the circuit board body 101 is attached to the heat conduction panel 204 on the radiator 201. When the circuit board body 101 is operating, the radiator 201 operates synchronously, causing the internal cooling fan 202 to rotate, and discharging the heat source absorbed by the heat conduction panel 204 from the exhaust slot 203. Embodiment 2

[0040] Please refer to Figures 1-5 As shown, for the HDI printed circuit board with buried fine lines proposed in this embodiment, on the basis of Embodiment 1, this embodiment further includes that positioning holes 103 are opened on the circuit board body 101, and at the same time, stabilizing holes 205 are opened on the radiator 201. A positioning rod 104 is movably sleeved in the positioning holes 103 and the stabilizing holes 205. One end of the positioning rod 104 is fixed with an adjustment knob 105, and the other end is fixed with a fixing screw 106. A cooling fan 202 is installed inside the radiator 201. At the same time, an exhaust slot 203 is opened on the side of the radiator 201. A heat conduction panel 204 is fixed on the radiator 201 and is attached to the bottom of the circuit board body 101. A tension spring 206 is fixed in the stabilizing hole 205. The tension spring 206 is movably sleeved on the side of the positioning rod 104, and both ends are attached between the circuit board body 101 and the radiator 201. One end of the corner plate 301 is threadedly connected with a locking rod 303, and one end of the locking rod 303 is attached to the slide rail ridge 207. A stabilizing sleeve hole 208 is opened on the side of the radiator 201. At the same time, a stabilizing sleeve rod 304 is fixed at one end of the corner plate 301. The stabilizing sleeve rod 304 is movably sleeved in the stabilizing sleeve hole 208.

[0041] In this solution, the diameter of the side of the positioning rod 104 is matched with the diameters in the positioning hole 103 and the stabilizing hole 205, improving the stability of the circuit board body 101 and the radiator 201. By rotating the adjustment knob 105, the positioning rod 104 drives the fixing screw 106 to rotate simultaneously, so that the fixing screw 106 is threadedly connected to the housing at the required installation position, setting the installation positions of the radiator 201 and the circuit board body 101. When the circuit board body 101 operates, the radiator 201 operates synchronously. Through the operation of the internal cooling fan 202, the fan blades rotate to discharge the heat source from the exhaust slot 203. The heat conduction panel 204 is specifically made of silica gel material and has the function of absorbing the heat source, realizing the absorption of the heat source generated by the circuit board body 101 and conducting the heat source into the radiator 201. After the hook 306 disengages from the bayonet 102, under the upward pushing action of the tension spring 206 when it unfolds, the circuit board body 101 can be jacked up to be separated from the radiator 201, facilitating the disassembly of the circuit board body 101. When the corner plate 301 is completely attached to the corners of the circuit board body 101, by rotating the locking rod 303, the front end of the locking rod 303 is closely attached to the slide rail rib 207 to fix between the corner plate 301 and the circuit board body 101, preventing the corner plate 301 from loosening. When the corner plate 301 is pushed and pulled, the stabilizing sleeve rod 304 is in the stabilizing sleeve hole 208, improving the stability of the pushing and pulling of the corner plate 301.

[0042] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fine line buried hole HDI printed circuit board, comprising a board component, a heat dissipation component and a fixing component, characterized in that: The board assembly includes a circuit board body, and a bayonet is provided on the side of the circuit board body; The heat dissipation assembly comprises a heat sink movably connected to the bottom of the circuit board body, and a slide rail convex strip is arranged on the side of the heat sink; The fixing assembly includes a corner plate movably connected to the side of the circuit board body, a slide rail groove is opened at one end of the corner plate, the slide rail groove is slidably connected to the side of the slide rail convex strip, and a mounting block is fixed on the corner plate, a hook is provided on the mounting block, and the hook is engaged in the bayonet.

2. The HDI printed circuit board with fine line buried vias according to claim 1, characterized in that: The circuit board body is provided with a positioning hole, and the radiator is provided with a stabilizing hole. A positioning rod is movably sleeved in the positioning hole and the stabilizing hole.

3. The HDI printed circuit board with fine line buried vias according to claim 2, characterized in that: A regulating button is fixed at one end of the positioning rod, and a fixing screw is fixed at the other end.

4. The HDI printed circuit board with fine line buried vias according to claim 2, characterized in that: A heat dissipation fan is installed in the radiator, and an exhaust slot is opened on the side of the radiator.

5. The HDI printed circuit board with fine line buried vias according to claim 4, characterized in that: A heat-conducting panel is fixed on the radiator and is attached to the bottom of the circuit board body.

6. The HDI printed circuit board with fine line buried vias according to claim 2, characterized in that: A tension spring is fixed in the stabilizing hole. The tension spring is movably sleeved on the side of the positioning rod, and both ends of the tension spring are fitted between the circuit board body and the radiator.

7. The HDI printed circuit board with fine line buried vias according to claim 1, characterized in that: One end of the corner plate is threadedly connected with a locking rod, and one end of the locking rod is fitted on the convex strip of the slide rail.

8. The HDI printed circuit board with fine line buried vias according to claim 6, characterized in that: A stabilizing sleeve hole is opened on the side of the radiator, and a stabilizing sleeve rod is fixed to one end of the corner plate, and the stabilizing sleeve rod is movably sleeved in the stabilizing sleeve hole.

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