CN216134646U

CN216134646U - Circuit board with blind hole structure

Info

Publication number: CN216134646U
Application number: CN202122062447.XU
Authority: CN
Inventors: 周祎; 蒲建明
Original assignee: Fujian Wuping County Jindian Prec Circuit Co ltd
Current assignee: Fujian Wuping County Jindian Prec Circuit Co ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-03-25
Anticipated expiration: 2031-08-30

Abstract

The utility model relates to a circuit board with a blind hole structure, which comprises an insulating layer, a core layer and a metal layer, wherein the metal layer is fixed at both ends of the core layer, the insulating layer is coated at one end or the other end of the metal layer, heat dissipation structures are arranged at both sides of one end of the insulating layer, each heat dissipation structure comprises a first heat dissipation fin, a heat conduction pipe and a second heat dissipation fin, the first heat dissipation fins are arranged at one side of the surface of the insulating layer at one end of the core layer, preformed holes are respectively penetrated through the top ends and the bottom ends of the surfaces of the core layer and the metal layer, a butt joint structure is arranged at one end of each preformed hole, and blind hole structures are arranged on the surfaces of the core layer and the metal layer. According to the utility model, the heat dissipation structure is arranged, the circuit board transmits heat to the first heat dissipation fins or the second heat dissipation fins through the heat conduction pipe, the first heat dissipation fins or the second heat dissipation fins dissipate the heat, and the first heat dissipation fins and the second heat dissipation fins are arranged on two sides of one end of the circuit board, so that the heat dissipation effect of the circuit board can be improved.

Description

Circuit board with blind hole structure

Technical Field

The utility model relates to the technical field of circuit boards, in particular to a circuit board with a blind hole structure.

Background

The circuit board has the main functions of concentrating circuits above one panel, miniaturizing the circuits through the circuit board and reducing the using space of the circuits, and the circuit board is divided into a single panel, a double-sided board and a multilayer circuit board, so that the quality of the circuit board is continuously improved along with the continuous development of the society, the using range of the circuit board is expanded, and the service life of the circuit board is prolonged.

The utility model discloses a circuit board, which comprises a circuit board body, a waterproof board, a water receiving groove and a drying agent sheet, wherein the waterproof board is bonded on the circuit board body, the water receiving groove is arranged in the waterproof board and used for collecting water and facilitating centralized treatment, and the drying agent sheet is bonded on the water receiving groove. The utility model provides a waterproof circuit board, which shields spilled water, protects the circuit board, gathers the water, and sucks the water in time, so that the circuit board is prevented from being broken down, the use of a product using the circuit board is prevented from being influenced, accidents are prevented, and the service life is prolonged.

The existing circuit board still has the following defects in use: when the electronic element operates, high temperature is generated and transmitted to the circuit board, and if the heat dissipation effect of the circuit board is poor, the electronic element is affected after long-term operation.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to provide a circuit board with a blind hole structure, which is used for solving the defect of poor heat dissipation effect of the existing circuit board.

(II) contents of utility model

In order to solve the technical problems, the utility model provides the following technical scheme: a circuit board with a blind hole structure comprises an insulating layer, a core layer and a metal layer, wherein the metal layer is fixed at both ends of the core layer;

one end or the other end of the metal layer is coated with an insulating layer;

the both sides of insulating layer one end are provided with heat radiation structure, heat radiation structure includes first radiating fin, heat pipe and second radiating fin, first radiating fin sets up in one side on sandwich layer one end insulating layer surface, the top and the bottom on sandwich layer and metal layer surface all run through there is the preformed hole, and the one end in preformed hole is provided with butt joint structure, the surface of sandwich layer and metal layer is provided with the blind hole structure.

Preferably, the blind hole structure includes connecting piece, hole body, connecting block and cock body, the hole body runs through in the inside of insulating layer, sandwich layer and metal level, be fixed with the connecting piece on the outer wall of hole body one end, the top or the bottom of the internal portion of hole all are provided with the cock body, and the outside bottom of cock body is connected with the inner wall of the hole body.

Preferably, a plurality of connecting blocks are arranged between the plug body and the hole body and are distributed annularly.

Preferably, the first radiating fin is arranged on the other side of the surface of the insulating layer at one end of the core layer, one ends of the first radiating fin and the second radiating fin are both provided with heat conducting pipes, and one ends of the heat conducting pipes extend to the other end of the insulating layer at the other end of the core layer.

Preferably, the number of the heat conduction pipes is three, and the three heat conduction pipes are distributed at equal intervals.

Preferably, the butt joint structure includes a connecting cylinder, a stop block and a spring, the connecting cylinder is arranged at the bottom end of the preformed hole, the stop block is embedded in the two sides of the connecting cylinder, and the spring is arranged between the stop block and the connecting cylinder.

Preferably, the bottom end of one side of the stop block is arranged in an inclined plane, and the stop block forms a telescopic structure through a spring.

(III) advantageous effects

The circuit board with the blind hole structure has the advantages that: the circuit board is provided with the heat dissipation structure, the circuit board transmits heat to the first heat dissipation fins or the second heat dissipation fins through the heat conduction pipes, the first heat dissipation fins or the second heat dissipation fins dissipate the heat, and the first heat dissipation fins and the second heat dissipation fins are arranged on two sides of one end of the circuit board, so that the heat dissipation effect of the circuit board can be improved;

through the blind hole structure, the surface of the circuit board is provided with the hole body, so that the circuit board can be suitable for parts with higher performance under the action of the hole body, can bear more parts, and avoids dust from entering to influence the use of the circuit board under the action of the plug body;

through being provided with butt joint structure, when installation or butt joint, insert the inside in another circuit board preformed hole with two circuit boards through preformed hole bottom connecting cylinder, the dog is receiving the extrusion back this moment, and the spring contracts, and after removing suitable position, the dog resets again under the effect of spring and fixes between installation department or another circuit board.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic perspective view of the present invention;

FIG. 3 is a schematic bottom view of the present invention;

FIG. 4 is a schematic bottom view partially in section of the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 3 according to the present invention;

FIG. 6 is a schematic bottom sectional view of the preformed hole of the present invention.

The reference numerals in the figures illustrate: 1. an insulating layer; 2. a blind hole structure; 201. a connecting member; 202. a porous body; 203. connecting blocks; 204. a plug body; 3. a heat dissipation structure; 301. a first heat radiation fin; 302. a heat conducting pipe; 303. a second heat radiation fin; 4. reserving a hole; 5. a core layer; 6. a metal layer; 7. a butt joint structure; 701. a connecting cylinder; 702. a stopper; 703. a spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-6, the circuit board with a blind via structure according to the present invention includes an insulating layer 1, a core layer 5 and a metal layer 6, wherein the metal layer 6 is fixed at both ends of the core layer 5;

one end or the other end of the metal layer 6 is coated with the insulating layer 1;

the both sides of 1 one end of insulating layer are provided with heat radiation structure 3, heat radiation structure 3 includes first radiating fin 301, heat pipe 302 and second radiating fin 303, first radiating fin 301 sets up in one side on 1 surperficial of 5 one end insulating layers of sandwich layer, first radiating fin 301 sets up in the opposite side on 1 surperficial of 5 one end insulating layers of sandwich layer, the one end of first radiating fin 301 and second radiating fin 303 all is provided with heat pipe 302, and the one end of heat pipe 302 extends to the other end of 5 other end insulating layers of sandwich layer 1.

The number of the heat conduction pipes 302 is three, and the three heat conduction pipes 302 are distributed at equal intervals, so that the heat transmission area is increased;

when the circuit board is used, the circuit board transmits heat to the first radiating fins 301 or the second radiating fins 303 through the heat conduction pipes 302, the first radiating fins 301 or the second radiating fins 303 radiate the heat, and the first radiating fins 301 and the second radiating fins 303 are arranged on two sides of one end of the circuit board, so that the radiating effect of the circuit board can be improved, the phenomenon that the temperature of the radiating plate is too high, the internal connection part of the radiating plate is damaged when the radiating plate is used for a long time, and the normal operation of electronic elements is influenced is avoided;

the top and the bottom on sandwich layer 5 and metal layer 6 surface all run through and have preformed hole 4, and the one end of preformed hole 4 is provided with butt-joint structural 7, and butt-joint structural 7 includes connecting cylinder 701, dog 702 and spring 703, and connecting cylinder 701 sets up in the bottom of preformed hole 4, and the inside of connecting cylinder 701 both sides all inlays and is equipped with dog 702, and is provided with spring 703 between dog 702 and the connecting cylinder 701.

The bottom end of one side of the stop block 702 is arranged in an inclined plane, the stop block 702 forms a telescopic structure through a spring 703, the stability is improved through the inclined plane arrangement, and the spring 703 is arranged to facilitate the insertion;

when in installation or butt joint, two circuit boards are inserted into the preformed hole 4 of the other circuit board through the connecting cylinder 701 at the bottom end of the preformed hole 4, the spring 703 contracts after the stop block 702 is extruded, and after the stop block 702 moves to a proper position, the stop block 702 is reset under the action of the spring 703 and is fixed with an installation position or the other circuit board;

the surface of sandwich layer 5 and metal layer 6 is provided with blind hole structure 2, and blind hole structure 2 includes connecting piece 201, the hole body 202, connecting block 203 and cock body 204, and the hole body 202 runs through in the inside of insulating layer 1, sandwich layer 5 and metal layer 6, is fixed with connecting piece 201 on the outer wall of hole body 202 one end, and the inside top of hole body 202 or bottom all are provided with cock body 204, and the outside bottom of cock body 204 is connected with the inner wall of hole body 202.

A plurality of connecting blocks 203 are arranged between the plug body 204 and the hole body 202, and the plurality of connecting blocks 203 are distributed annularly to connect the plug body 204 at multiple points;

when the plug is used, the hole body 202 is arranged on the surface of the circuit board, the plug can be suitable for parts with higher performance under the action of the hole body 202, more parts can be loaded, dust is prevented from entering under the action of the plug body 204, and when the use of the plug is influenced, the plug body 204 is detached by means of a tool when the plug is used.

The working principle is as follows: when the plug body 202 is used, firstly, a plurality of mounting holes are formed above the circuit board, electronic components are mounted above the circuit board, and if the plug body 204 in the hole body 202 is detached by a tool and part of parts are mounted above the circuit board;

secondly, when the circuit board is installed between the circuit board and an object, the connecting cylinder 701 is inserted into the connecting position, when the connecting cylinder 701 moves downwards, the stop block 702 is extruded and contracted, after the circuit board is installed to a proper position, the stop block 702 extends outwards and resets under the action of the spring 703, and if further fixing is needed, the circuit board and the installing position are fixed by a fastener;

finally, in the using process, because the electronic element generates high temperature when operating, the high temperature is transmitted to the upper part of the circuit board, so that the temperature of the circuit board is increased, the heat is transmitted to the inside of the first radiating fin 301 or the second radiating fin 303 through the heat conduction pipe 302, and then is dissipated by the first radiating fin 301 or the second radiating fin 303, so that the temperature of the circuit board is reduced, the operation of the electronic element is prevented from being influenced, and the using work of the circuit board is finally completed.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A circuit board with a blind via structure, comprising an insulating layer (1), a core layer (5) and a metal layer (6), characterized in that: both ends of the core layer (5) are fixed with metal layers (6);

one end or the other end of the metal layer (6) is coated with an insulating layer (1);

the both sides of insulating layer (1) one end are provided with heat radiation structure (3), heat radiation structure (3) include first radiating fin (301), heat pipe (302) and second radiating fin (303), first radiating fin (301) set up in one side on sandwich layer (5) one end insulating layer (1) surface, sandwich layer (5) and metal level (6) surface top and bottom all run through preformed hole (4), and the one end of preformed hole (4) is provided with butt-joint structural (7), the surface of sandwich layer (5) and metal level (6) is provided with blind hole structure (2).

2. The circuit board with a blind via structure of claim 1, wherein: the blind hole structure (2) comprises a connecting piece (201), a hole body (202), a connecting block (203) and a plug body (204), wherein the hole body (202) penetrates through the insulating layer (1), the core layer (5) and the metal layer (6), the connecting piece (201) is fixed on the outer wall of one end of the hole body (202), the plug body (204) is arranged on the top end or the bottom end of the inside of the hole body (202), and the bottom end of the outside of the plug body (204) is connected with the inner wall of the hole body (202).

3. The circuit board with a blind via structure of claim 2, wherein: the connecting block (203) is provided with a plurality of connecting blocks between the plug body (204) and the hole body (202), and the connecting blocks (203) are distributed annularly.

4. The circuit board with a blind via structure of claim 1, wherein: first radiating fin (301) set up in the opposite side on sandwich layer (5) one end insulating layer (1) surface, the one end of first radiating fin (301) and second radiating fin (303) all is provided with heat pipe (302), and the one end of heat pipe (302) extends to the other end of sandwich layer (5) other end insulating layer (1).

5. The circuit board with a blind via structure of claim 4, wherein: the number of the heat conduction pipes (302) is three, and the three heat conduction pipes (302) are distributed at equal intervals.

6. The circuit board with a blind via structure of claim 1, wherein: butt joint structure (7) include connecting cylinder (701), dog (702) and spring (703), connecting cylinder (701) set up in the bottom of preformed hole (4), the inside of connecting cylinder (701) both sides all inlays and is equipped with dog (702), and is provided with spring (703) between dog (702) and connecting cylinder (701).

7. The circuit board with a blind via structure of claim 6, wherein: the bottom end of one side of the stop block (702) is arranged in an inclined plane, and the stop block (702) forms a telescopic structure through a spring (703).