CN213847111U

CN213847111U - Protection type circuit board with ground connection function

Info

Publication number: CN213847111U
Application number: CN202022418127.9U
Authority: CN
Inventors: 龙光泽
Original assignee: Digital Printed Circuit Board Co Ltd
Current assignee: Digital Printed Circuit Board Co Ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-07-30
Anticipated expiration: 2030-10-27

Abstract

The utility model provides a pair of protection type circuit board with ground connection function, first ground connection circuit with be connected with first metallization hole between the second ground connection circuit, the welding of first metallization hole upper end has first current conducting plate, third ground connection circuit with be connected with second metallization hole between the fourth ground connection circuit, the welding of second metallization hole upper end has the second current conducting plate, fifth ground connection circuit with be connected with third metallization hole between the sixth ground connection circuit, the welding of third metallization hole lower extreme has the third current conducting plate, the common welding of first current conducting plate, second current conducting plate, third current conducting plate one end has the current collecting plate. The utility model discloses a circuit board has increased first current conducting plate, second current conducting plate, third current conducting plate and current collecting plate, can derive the leakage current that produces on top plate, double sided board, the lower plywood rapidly to realize ground connection safeguard function.

Description

Protection type circuit board with ground connection function

Technical Field

The utility model relates to a circuit board technical field, concretely relates to protection type circuit board with ground connection function.

Background

Circuit boards are providers of electrical connections for electronic components. Its development has been over 100 years old; the design of the method is mainly layout design; the circuit board has the main advantages of greatly reducing errors of wiring and assembly, and improving the automation level and the production labor rate. The circuit board is developed from a single layer to a double-sided board and a multi-layer board, and the development trend of the production and manufacturing technology of the circuit board in the future is to develop the circuit board in the directions of high density, high precision, fine aperture, fine wire, small space, high reliability, multilayering, high-speed transmission, light weight and thin type in performance. The circuit board in the prior art can have the electric leakage phenomenon in the working process, and most electronic components on the circuit board can be damaged due to an overlarge electric leakage circuit during electric leakage.

SUMMERY OF THE UTILITY MODEL

To above problem, the utility model provides a protection type circuit board with ground connection function has increased first current conducting plate, second current conducting plate, third current conducting plate and current collecting plate, can derive the leakage current who produces on top plate, double sided board, the lower plywood rapidly to realize ground connection safeguard function.

In order to achieve the above object, the present invention provides the following technical solutions:

a protective circuit board with a grounding function comprises a circuit board, wherein the circuit board comprises an upper layer board, a first insulating heat-conducting layer, a double-sided board, a second insulating heat-conducting layer and a lower layer board which are sequentially arranged from top to bottom, a first outer circuit layer and a first inner circuit layer are respectively arranged at the upper end and the lower end of the upper layer board, a first grounding circuit is arranged in the first outer circuit layer, a second grounding circuit is arranged in the first inner circuit layer, a first metalized hole is connected between the first grounding circuit and the second grounding circuit, a first current-conducting plate is welded at the upper end of the first metalized hole, a second inner circuit layer and a third inner circuit layer are respectively arranged at the upper end and the lower end of the double-sided board, a third grounding circuit is arranged in the second inner circuit layer, a fourth grounding circuit is arranged in the third inner circuit layer, and a second metalized hole is connected between the third grounding circuit and the fourth grounding circuit, the welding of second metallization hole upper end has the second current conducting plate, both ends are equipped with fourth interior circuit layer, second outside circuit layer respectively about the lower floor's board, be equipped with fifth ground connection circuit in the fourth interior circuit layer, the second outside circuit in situ is equipped with sixth ground connection circuit, fifth ground connection circuit with be connected with the third metallization hole between the sixth ground connection circuit, the welding of third metallization hole lower extreme has the third current conducting plate, the common welding of first current conducting plate, second current conducting plate, third current conducting plate one end has the current collecting plate.

Specifically, through holes are formed in the middle of the first current-conducting plate, the middle of the second current-conducting plate and the middle of the third current-conducting plate, and solder materials are filled in the through holes.

Specifically, the first metalized hole, the second metalized hole and the third metalized hole are all filled with hole plugging resin.

Specifically, a high-hardness board layer is arranged on the inner side of the first insulating and heat conducting layer.

Specifically, a ceramic heat dissipation layer is arranged on the inner side of the second insulating heat conduction layer.

Specifically, an elastic cushion layer is further arranged on one side, close to the first metalized hole, of the collector plate.

The utility model has the advantages that:

first, the circuit board of the present invention adds the first current-conducting plate, the second current-conducting plate, the third current-conducting plate and the current-collecting plate, which can rapidly lead out the leakage current generated on the upper plate, the double-sided plate and the lower plate, so as to realize the grounding protection function;

the second, increased the high rigidity sheet layer in first insulating heat-conducting layer inboard, improved the hardness of circuit board, increased the ceramic heat dissipation layer in second insulating heat-conducting layer inboard, promoted the heat dispersion of circuit board.

Drawings

Fig. 1 is a schematic structural diagram of a protection circuit board with a grounding function according to the present invention.

The reference signs are: the high-hardness plate comprises an upper plate 1, a first outer circuit layer 11, a first inner circuit layer 12, a first metalized hole 13, a first conductive plate 14, a first insulating and heat conducting layer 2, a double-sided plate 3, a second inner circuit layer 31, a third inner circuit layer 32, a second metalized hole 33, a second conductive plate 34, a second insulating and heat conducting layer 4, a lower plate 5, a fourth inner circuit layer 51, a second outer circuit layer 52, a third metalized hole 53, a third conductive plate 54, a current collecting plate 6, a solder 7, a high-hardness plate layer 8, a ceramic heat dissipation layer 9 and an elastic cushion layer 10.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.

As shown in fig. 1:

a protective circuit board with grounding function comprises a circuit board, the circuit board comprises an upper board 1, a first insulating heat-conducting layer 2, a double-sided board 3, a second insulating heat-conducting layer 4 and a lower board 5 which are sequentially arranged from top to bottom, the upper end and the lower end of the upper board 1 are respectively provided with a first outer circuit layer 11 and a first inner circuit layer 12, a first grounding circuit is arranged in the first outer circuit layer 11, a second grounding circuit is arranged in the first inner circuit layer 12, a first metalized hole 13 is connected between the first grounding circuit and the second grounding circuit, the first metalized hole 13 is a hole with copper plated inner wall, bridge electric connection between the first grounding circuit and the second grounding circuit can be realized, the upper end of the first inner circuit hole 13 is welded with a first conductive plate 14, the upper end and the lower end of the double-sided board 3 are respectively provided with a second circuit layer 31 and a third circuit layer 32, and a third grounding circuit is arranged in the second inner circuit layer 31, a fourth grounding circuit is arranged in the third inner circuit layer 32, a second metalized hole 33 is connected between the third grounding circuit and the fourth grounding circuit, the second metalized hole 33 is a hole with a copper-plated inner wall, bridge electric connection between the third grounding circuit and the fourth grounding circuit can be realized, a second conductive plate 34 is welded at the upper end of the second metalized hole 33, a fourth inner circuit layer 51 and a second outer circuit layer 52 are respectively arranged at the upper end and the lower end of the lower plate 5, a fifth grounding circuit is arranged in the fourth inner circuit layer 51, a sixth grounding circuit is arranged in the second outer circuit layer 52, a third metalized hole 53 is connected between the fifth grounding circuit and the sixth grounding circuit, the third metalized hole 53 is a hole with a copper-plated inner wall, bridge electric connection between the fifth grounding circuit and the sixth grounding circuit can be realized, a third conductive plate 54 is welded at the lower end of the third metalized hole 53, the first conductive plate 14 and the second conductive plate 34, The third current-conducting plate 54 has one end welded to the current-collecting plate 6, the leakage current can be transmitted to the current-collecting plate 6 through the first current-conducting plate 14, the second current-conducting plate 34 and the third current-conducting plate 54, and the other end of the current-collecting plate 6 is also connected to a ground wire, so that the leakage current is led out through the ground wire, thereby protecting electronic components on the circuit board.

Preferably, in order to ensure the conductive contact performance between the first conductive plate 14 and the first metalized hole 13, between the second conductive plate 34 and the second metalized hole 33, and between the third conductive plate 54 and the third metalized hole 53, through holes are formed in the middle of the first conductive plate 14, the second conductive plate 34, and the third conductive plate 54, the through holes are filled with the solder 7, the solder 7 is formed in the through holes after welding, and the upper end or the lower end of the solder 7 is embedded into the first metalized hole 13, the second metalized hole 33, and the third metalized hole 53, so that the effect of preventing the positions of the first conductive plate 14, the second conductive plate 34, and the third conductive plate 54 from being loosened can be achieved.

Preferably, the first metalized hole 13, the second metalized hole 33, and the third metalized hole 53 are filled with a via hole resin, the via hole resin is formed by hot pressing in the processing process of the circuit board, and the via hole resin is filled inside the first metalized hole 13, the second metalized hole 33, and the third metalized hole 53, so that the copper films inside the first metalized hole 13, the second metalized hole 33, and the third metalized hole 53 can be prevented from falling off.

Preferably, in order to improve the hardness of the circuit board, the high-hardness board layer 8 is arranged inside the first insulating and heat conducting layer 2.

Preferably, in order to improve the heat dissipation performance of the circuit board, a ceramic heat dissipation layer 9 is arranged inside the second insulating and heat conducting layer 4.

Preferably, the current collector plate 6 is further provided with an elastic cushion layer 10 on the side facing the first metallized hole 13.

The above embodiments only represent one embodiment of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A protective circuit board with a grounding function comprises a circuit board, wherein the circuit board comprises an upper plate (1), a first insulating heat-conducting layer (2), a double-sided board (3), a second insulating heat-conducting layer (4) and a lower plate (5) which are sequentially arranged from top to bottom, and is characterized in that a first outer circuit layer (11) and a first inner circuit layer (12) are respectively arranged at the upper end and the lower end of the upper plate (1), a first grounding circuit is arranged in the first outer circuit layer (11), a second grounding circuit is arranged in the first inner circuit layer (12), a first metallization hole (13) is connected between the first grounding circuit and the second grounding circuit, a first conductive plate (14) is welded at the upper end of the first metallization hole (13), a second circuit layer (31) and a third circuit layer (32) are respectively arranged at the upper end and the lower end of the double-sided board (3), a third grounding circuit is arranged in the second inner circuit layer (31), a fourth grounding circuit is arranged in the third inner circuit layer (32), a second metalized hole (33) is connected between the third grounding line and the fourth grounding line, a second conductive plate (34) is welded at the upper end of the second metallized hole (33), a fourth inner circuit layer (51) and a second outer circuit layer (52) are respectively arranged at the upper end and the lower end of the lower layer plate (5), a fifth grounding circuit is arranged in the fourth inner circuit layer (51), a sixth grounding circuit is arranged in the second outer circuit layer (52), a third metalized hole (53) is connected between the fifth grounding line and the sixth grounding line, a third conductive plate (54) is welded at the lower end of the third metallized hole (53), one end of the first conductive plate (14), one end of the second conductive plate (34) and one end of the third conductive plate (54) are welded with a collector plate (6) together.

2. The protection circuit board with the grounding function according to claim 1, wherein through holes are formed in the middle of the first conductive plate (14), the second conductive plate (34) and the third conductive plate (54), and solder (7) is filled in the through holes.

3. A protected circuit board with grounding function according to claim 1, wherein the first metallized hole (13), the second metallized hole (33) and the third metallized hole (53) are all filled with plug hole resin.

4. A protection circuit board with grounding function according to claim 1, characterized in that the first insulating and heat conducting layer (2) is provided with a high hardness board layer (8) inside.

5. A protected circuit board with grounding function according to claim 1, characterized in that the second insulating and heat conducting layer (4) is provided with a ceramic heat sink layer (9) inside.

6. A protected circuit board with a grounding function according to claim 1, characterized in that the collector plate (6) is further provided with an elastic cushion (10) on the side facing the first metallized hole (13).