CN218217786U

CN218217786U - PCB multilayer circuit board with counter sink

Info

Publication number: CN218217786U
Application number: CN202221871096.5U
Authority: CN
Inventors: 邱锡曼; 李志雄
Original assignee: Chengyi Electronics Jiaxing Co ltd
Current assignee: Chengyi Electronics Jiaxing Co ltd
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2023-01-03
Anticipated expiration: 2032-07-12

Abstract

The utility model discloses a PCB multilayer circuit board with counter sink relates to the circuit board field, including the PCB plate body, one side of PCB plate body bonds there is first outer circuit, the opposite side of PCB plate body bonds there is the outer circuit of second, set up a plurality of recesses that are the rectangular array and distribute on the outer circuit of second, it has heavy copper layer to bond on the inner wall of recess, the spiral shell groove has been seted up on the inner wall of heavy copper layer, the inside of spiral shell groove is provided with the counter sink subassembly. The utility model discloses a be provided with the heavy copper layer in the recess, the heavy copper layer is connected with the double-screw bolt on the counter bore subassembly, and the counter bore has been seted up to plush copper on the double-screw bolt, can satisfy the welding demand of component, and the setting of double-screw bolt has improved the intensity of this device moreover for this device can not split easily, has seted up logical groove on the double-screw bolt, leads to the groove and has played ventilation cooling's effect with the air channel cooperation, has improved the radiating efficiency of this device.

Description

PCB multilayer circuit board with counter sink

Technical Field

The utility model relates to a circuit board field, in particular to PCB multilayer circuit board with counter sink.

Background

Circuit boards, also known as PCBs, are small enough for electronic watches, calculators, and large enough for computers, communications electronics, and military weaponry systems, and almost every type of electronic device uses circuit boards to electrically interconnect the various electronic components.

At present, a countersunk hole is arranged at the position of a multilayer circuit board where electronic components need to be welded and assembled, and the problem that a screw head is buried in the circuit board or only the design of a parallel board surface can be adopted during PCBA assembly is solved. However, in the conventional technology, the counter bores are generally formed by directly processing the circuit board through a countersink on a numerical control drilling machine, and the processing mode easily damages the strength of the circuit board, so that the circuit board is damaged in the hole opening process.

The utility model discloses a utility model with publication number CN212588566U discloses a multilayer circuit board with heat conduction reinforcing structure, which comprises a PCB body, wherein the PCB body comprises a core plate, a first outer circuit layer and a second outer circuit layer are respectively arranged on two sides of the core plate, a through hole is arranged in the PCB body, a first solder mask layer is arranged on one side of the first outer circuit layer away from the core plate, a second solder mask layer is arranged on one side of the second outer circuit layer away from the core plate, a first abdicating hole is arranged in the first solder mask layer, and a second abdicating hole is arranged in the second solder mask layer; the through hole is internally provided with an insulating screw, the screw head of the insulating screw is positioned in the second abdicating hole, the insulating screw is internally provided with an air vent, the first abdicating hole is internally provided with a conductive nut, the conductive nut is internally provided with a screw hole, the screw hole is in threaded connection with the insulating screw, one end of the screw hole is connected with a tin containing tank, and the screw hole is internally provided with a limiting net layer. The utility model discloses a can avoid appearing the wane scheduling problem that drops, heat conduction reinforced structure can not additionally increase volume and weight, can also provide the pad for electronic component's welding.

Although above-mentioned utility model discloses an it is used for ventilating to open logical groove in the nut to this logical groove has also acted as the effect of counter sink, can be used for welding element, but the upper end opening that should lead to the groove behind the welding element is sealed, makes ventilation performance relatively poor, can not play fine ventilation cooling effect, has reduced the radiating effect of circuit board. Therefore, it is necessary to invent a PCB multi-layer circuit board with countersunk holes to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a PCB multilayer circuit board with counter sink to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a PCB multilayer circuit board with counter sink, includes the PCB plate body, one side of PCB plate body bonds has first outer circuit, the opposite side of PCB plate body bonds has the outer circuit of second, set up a plurality of recesses that are the rectangular array and distribute on the outer circuit of second, it has the heavy copper layer to bond on the inner wall of recess, the spiral shell groove has been seted up on the inner wall of heavy copper layer, the inside of spiral shell groove is provided with the counter sink subassembly.

Preferably, the counterbore assembly comprises a stud, and one end of the stud is inserted into the screw groove and connected with the screw groove through internal and external threads.

Preferably, a raised head is fixed to the other end of the stud and located on the outer side of the second outer layer circuit, and the edge of the inner side of the raised head is attached to the second outer layer circuit through a heat insulation pad.

Preferably, a countersunk hole is formed in the middle of the outer side of the raised head, a through groove is formed in the middle of the stud in a penetrating manner, and one end of the through groove extends into the raised head.

Preferably, a plurality of vent grooves distributed in an annular array are formed in the raised head, and one end of each vent groove is communicated with one end of each through groove.

Preferably, a notch is formed in the outer side of the other end of the vent groove, the notch is formed in the outer side of the raised head and is of an annular structure, a filter screen is formed in the notch, and the filter screen is of a C-shaped structure.

The utility model discloses a technological effect and advantage:

the utility model discloses a be provided with the heavy copper layer in the recess, the heavy copper layer is connected with the double-screw bolt on the counter bore subassembly, the counter bore has been seted up to the plush copper on the double-screw bolt, can satisfy the welding demand of component, and the setting of double-screw bolt has improved the intensity of this device, make this device can not split easily, the double-screw bolt has played the effect of heat conduction with the cooperation of heavy copper layer, logical groove has been seted up on the double-screw bolt, logical groove has played ventilation cooling's effect with the air channel cooperation, the radiating efficiency of this device has been improved, notch at the air channel is provided with detachable filter screen, can avoid the dust to get into, convenient to detach washs simultaneously.

Drawings

Fig. 1 is a schematic sectional view of the overall structure of the present invention.

Fig. 2 is a schematic structural section view of the counterbore assembly of the present invention.

Fig. 3 is a perspective view of the structure of the protruding head of the present invention.

In the figure: 1. a PCB body; 2. a first outer layer circuit; 3. a second outer layer circuit; 4. a groove; 5. depositing a copper layer; 6. a screw groove; 7. a counterbore assembly; 8. a stud; 9. a raised head; 10. a heat insulating pad; 11. countersinking; 12. a through groove; 13. a vent groove; 14. a notch; 15. and (5) filtering by using a filter screen.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely 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, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a PCB multilayer circuit board with counter bore as shown in fig. 1-3, including PCB plate body 1, one side of PCB plate body 1 bonds and has first outer circuit 2, and the opposite side of PCB plate body 1 bonds and has second outer circuit 3, has seted up a plurality of recesses 4 that are the distribution of rectangle array on the outer circuit 3 of second, has bonded on the inner wall of recess 4 and has sunk copper layer 5, has seted up spiral shell groove 6 on the inner wall of sunk copper layer 5, and the inside of spiral shell groove 6 is provided with counter bore subassembly 7.

Specifically, the counter bore component 7 comprises a stud 8, the stud 8 is made of a heat conducting material, a copper deposition layer 5 is matched with the stud 8 to play a heat conducting role, one end of the stud 8 is inserted into the screw groove 6 and is connected with the screw groove 6 through internal and external threads, a raised head 9 is fixed at the other end of the stud 8, the raised head 9 is located on the outer side of the second outer layer circuit 3, the inner side edge of the raised head 9 is attached to the second outer layer circuit 3 through a heat insulation pad 10, the heat insulation pad 10 is arranged to play a heat insulation role, heat is prevented from being transmitted to the second outer layer circuit 3 by the raised head 9, a counter bore 11 is formed in the middle of the outer side of the raised head 9, the counter bore 11 can meet the requirement of component welding, a through groove 12 is formed in the middle of the stud 8 in a penetrating mode, one end of the through groove 12 extends into the raised head 9, a plurality of vent grooves 13 distributed in an annular array are formed in the raised head 9, one end of the vent groove 13 is communicated with one end of the through groove 12, the vent groove 13 is matched with the through groove 12 to play a heat dissipation role, the outer side of the vent groove 14, a filter screen 14 is arranged to play a role of a filter screen 15, and a filter screen 14 is arranged in the filter screen 15, and a filter screen structure for cleaning.

The utility model discloses the theory of operation:

this device is when the installation, at first in twisting the spiral shell groove 6 on the heavy copper layer 5 with the double-screw bolt 8, then break off filter screen 15 and block in notch 14 on the plush copper 9, this device installation is accomplished this moment, countersunk hole 11 has been seted up to plush copper 9 on the double-screw bolt 8, can satisfy the welding demand of component, and the setting of double-screw bolt 8 has improved the intensity of this device, make this device can not split easily, double-screw bolt 8 has played the effect of heat conduction with the cooperation of heavy copper layer 5, logical groove 12 has been seted up on double-screw bolt 8, logical groove 12 has played ventilation cooling's effect with the cooperation of air channel 13, the radiating efficiency of this device has been improved, be provided with detachable filter screen 15 in the notch 14 of air channel 13, can avoid the dust to get into, filter screen 15 is convenient for dismantle the washing simultaneously.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions on some technical features, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a PCB multilayer circuit board with counter bore, includes PCB plate body (1), its characterized in that: one side of PCB plate body (1) bonds and has first outer layer circuit (2), the opposite side of PCB plate body (1) bonds and has second outer layer circuit (3), set up a plurality of recess (4) that are the rectangular array and distribute on second outer layer circuit (3), it has heavy copper layer (5) to bond on the inner wall of recess (4), spiral groove (6) have been seted up on the inner wall of heavy copper layer (5), the inside of spiral groove (6) is provided with counter bore subassembly (7).

2. A PCB multilayer circuit board with countersunk holes according to claim 1, wherein: the counter bore component (7) comprises a stud (8), and one end of the stud (8) is inserted into the screw groove (6) and connected with the screw groove (6) through internal and external threads.

3. A PCB multilayer circuit board with countersunk holes according to claim 2, wherein: the other end of the stud (8) is fixed with a raised head (9), the raised head (9) is located on the outer side of the second outer layer circuit (3), and the edge of the inner side of the raised head (9) is attached to the second outer layer circuit (3) through a heat insulation pad (10).

4. A PCB multilayer circuit board with countersunk holes as claimed in claim 3, wherein: a counter bore (11) is formed in the middle of the outer side of the protruding head (9), a through groove (12) is formed in the middle of the stud (8) in a penetrating mode, and one end of the through groove (12) extends into the protruding head (9).

5. A PCB multilayer circuit board with counter sunk holes as defined in claim 4, wherein: a plurality of vent grooves (13) distributed in an annular array are formed in the raised head (9), and one end of each vent groove (13) is communicated with one end of each through groove (12).

6. A PCB multilayer circuit board with counter sunk holes as defined in claim 5, wherein: notch (14) have been seted up in the other end outside of air duct (13), notch (14) are seted up in the outside of plush copper (9), and notch (14) set up to the loop configuration, filter screen (15) have been seted up to the inside of notch (14), filter screen (15) set up to C shape structure.