KR102410695B1 - Sub-pcb, pcb board including the same, and electronic devices using the same - Google Patents

Abstract

The present invention includes a main PCB having a mounting hole formed therethrough on one surface; It is possible to provide a PCB board characterized in that it comprises a sub-PCB body inserted into the mounting hole and a sub-PCB including a locking part formed to protrude from the sub-PCB body. According to the above, it is possible to improve economic efficiency by reducing manufacturing costs by reducing required parts, and to improve workability and productivity.

Description

Sub-PCB, PCB board including same, and electronic device using same

The present invention relates to a sub-PCB, a PCB board including the same, and an electronic device using the same, and more particularly, to a PCB board applied to various electronic devices, which can easily connect a main PCB and a sub-PCB to each other without a separate connector. It relates to a sub-PCB, a PCB board including the same, and an electronic device using the same.

In general, products that perform circuit functions include a main circuit that performs a main function and an auxiliary circuit that is selectively employed. It is used to give new functions that add additional functions. Among them, the function of the auxiliary circuit is improved as a new function or a new model of the product is developed. In this case, even the main circuit must be changed.

Accordingly, in recent years, a technology has been developed in which the main circuit and the auxiliary circuit are separately implemented on the main board and the auxiliary board, respectively, and only the auxiliary board is replaced and changed by electrically connecting the main board and the auxiliary board to each other.

As an example of the technology for such a main board and an auxiliary board, Korean Patent Registration No. 10-1531098 includes a set body, a main PCB coupled to the set body, and a main PCB coupled to the set body, and a subPCB coupled to the set body, wherein the connector of the sub PCB A communication package module that is electrically connected to a socket of a main PCB has been disclosed.

However, since the above-mentioned conventional main PCB and sub-PCB require separate connectors and sockets conforming to the standard, manufacturing costs of these connectors and sockets are required, and in order to fasten the main PCB and the sub-PCB, a connector and a sub-PCB are required. There was a problem in that the work process for connecting the sockets to each other increased, thereby reducing workability and productivity.

Republic of Korea Patent No. 10-1531098

According to the present invention, the manufacturing cost can be reduced by allowing the main PCB and the sub PCB to be easily fastened to each other without the need for a separate component for fastening the main PCB and the sub PCB, such as a connector and a socket, as well as an assembly process. An object of the present invention is to provide a sub-PCB capable of simplifying the workability and productivity, a PCB substrate including the same, and an electronic device using the same.

According to one aspect of the present invention, the present invention is a sub-PCB body formed with a sub-connection terminal for connection to the main-connection terminal of the main PCB; and a locking part formed to protrude from at least one side of the front and rear surfaces of the sub PCB body.

Here, the locking parts are respectively coupled to the front and rear surfaces of the sub PCB body, are located inside from both ends, and may be formed to protrude in a direction perpendicular to the front and rear surfaces of the sub PCB body.

In addition, the locking part may be integrally formed with the sub PCB body.

According to another aspect of the present invention, the present invention is a main PCB having a mounting hole formed therethrough on one surface; A sub-PCB fastened to the main PCB and electrically connected to the main PCB; the sub-PCB is inserted into the mounting hole and the sub-PCB body is formed with a sub-connection terminal for connection to the main-connection terminal of the main PCB; and a locking part which is formed to protrude from at least one side of the front and rear surfaces of the sub PCB body and is engaged with the main PCB when the sub PCB body is inserted into the mounting hole. have.

Here, the present invention may be configured to further include a soldering unit for bonding the main connection terminal and the sub connection terminal to each other by soldering, and fixing the sub PCB to the main PCB.

On the other hand, the sub-PCB body has sub-connection terminals formed on the front and rear surfaces, respectively, and the main PCB is adjacent to the mounting hole and the main connection terminal is located at a position corresponding to the sub-connection terminal of the sub-PCB body inserted into the mounting hole. can be formed.

The locking part may be integrally formed with the sub PCB body.

In addition, the locking portion is formed to protrude from the upper surface in contact with the other surface of the main PCB, so that when the sub PCB body is inserted into the mounting hole, the fitting portion to be fitted into the fitting groove formed on the other surface of the main PCB may be formed to protrude.

Furthermore, the main PCB communicates with the mounting hole, and when the sub PCB body is inserted into the mounting hole, a stepped groove into which the engaging part is inserted and seated may be formed.

In addition, the locking part includes a first locking part having one end coupled to the front surface of the sub PCB body and the other end protruding toward the width direction of the sub PCB, one end coupled to the rear surface of the sub PCB body, and the other end being the width of the sub PCB It may be configured to include a second locking portion formed to protrude toward the direction.

Furthermore, the first and second locking parts may be formed to protrude in a direction perpendicular to the front and rear surfaces of the sub-PCB body, respectively.

In addition, the first locking part and the second locking part are formed to protrude in an inclined direction with respect to the front and rear surfaces of the sub PCB body, respectively, and the inclination direction of the first locking part and the inclination direction of the second locking part are between the sub PCB body. and may be formed to be symmetrical to each other.

On the other hand, the locking part is provided at each end of the first locking part and the second locking part, and further comprising a third locking part disposed in a direction perpendicular or inclined with respect to the first locking part and the second locking part. can be

On the other hand, the main PCB and the sub-PCB, each of a single-sided PCB, a double-sided PCB, a multi-layer PCB, a flexible (flexible) PCB, MCCL (Metal Copper Clad Laminate), and MLB (Multi Layer Board) may be composed of any one of.

According to another embodiment of the present invention, the present invention can provide an electronic device using the above-described PCB substrate.

The sub-PCB, the PCB board including the same, and the electronic device using the same according to the present invention are configured to easily assemble and fasten the main PCB and the sub-PCB with each other without separate components such as connectors and sockets, thereby reducing the manufacturing cost by reducing the required components It is possible to improve economic feasibility by reducing it, and it is possible to simplify the assembly operation, thereby providing the effect of improving workability and productivity.

1 is an exploded perspective view showing a PCB substrate according to an embodiment of the present invention.
2 is a front view of a PCB substrate according to an embodiment of the present invention.
3 is a plan view illustrating a sub-PCB when viewed in a plan view in a PCB substrate according to an embodiment of the present invention.
4 is a plan view illustrating another embodiment of a sub-PCB having engaging portions configured to be symmetrical to each other in a PCB substrate according to an embodiment of the present invention.
5 is a plan view illustrating another embodiment of a sub-PCB having a hooking portion inclinedly coupled to the PCB substrate according to an embodiment of the present invention.
6 is a front view showing another embodiment of a sub-PCB in which an inclined surface is formed on a sub-PCB body in a PCB substrate according to an embodiment of the present invention.
7 is a side view illustrating another embodiment of a sub-PCB having a fitting portion in a PCB substrate according to an embodiment of the present invention.
8 is a side cross-sectional view showing another embodiment of the main PCB in which the stepped groove is formed in the PCB substrate according to the embodiment of the present invention.
9 is a plan view illustrating another embodiment of a locking part provided with a third locking part in a PCB substrate according to an embodiment of the present invention and another embodiment of a main PCB having a stepped groove formed in the main PCB according thereto.

Hereinafter, the terms used in the present invention have been selected as widely used general terms as possible while considering the functions in the present invention, but this may vary depending on the intention or precedent of a person skilled in the art, the emergence of new technology, and the like. In addition, in a specific case, there is a term arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term and the overall content of the present invention, rather than the name of a simple term. In the entire specification, when a part "includes" a certain element, this means that other elements may be further included, rather than excluding other elements, unless otherwise stated. In addition, terms such as "unit", "module", and "means" described in the specification refer to a unit that processes at least one function or operation, and in the following description, terms such as first and second is a term used to describe various components, the meaning is not limited to itself, and is used only for the purpose of distinguishing one component from other components.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement them. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, similar reference numerals are attached to similar parts throughout the specification, and the same reference numbers used throughout the present specification refer to the same components. indicates. In the description of the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

First, the PCB board 400 according to the embodiment of the present invention is different from the conventional method in which the main PCB 100 and the sub PCB 200 are connected to each other through a separate connector or socket, the main PCB 100 and the sub PCB 200 is configured to be assembled and fastened to each other, thereby reducing the cost of parts and improving economic efficiency, as well as simplifying the fastening process, thereby improving workability and productivity. In addition, since the PCB substrate according to the embodiment of the present invention is connected to each other through soldering after assembling and fastening the main PCB 100 and the sub PCB 200 to each other, more stable electrical connection and coupling fixation are possible without separate components. It is possible.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 , a PCB substrate 400 according to an embodiment of the present invention is configured to include a main PCB 100 , a sub PCB 200 , and a soldering unit 300 , and a sub PCB. 200 may be assembled and fastened to the main PCB 100 , and the main PC and the sub PCB 200 may be coupled and fixed to each other and electrically connected by the soldering unit 300 .

Before examining the present invention, for the purpose of explanation of the present invention, name definitions for each side of the main PCB 100 and the sub PCB 200 will be described. First, as shown, the main PCB 100 is formed in a thin plate structure, and for convenience, it may be configured to include one surface (top surface in the drawing), the other surface (bottom surface) and four thick surfaces (side surfaces). In addition, the sub-PCB 200, like the main PCB 100, is formed in a thin plate structure may be configured to include a front surface, a rear surface, and four thick surfaces connecting the front and rear surfaces to each other.

Accordingly, first, the main PCB 100 will be described. The main PCB 100 has a main connection terminal 120 for connecting to the main circuit formed on one surface, and a mounting hole 110 through which the sub PCB 200 is inserted may be formed on one surface and the other surface.

Here, the main connection terminal 120 may be located adjacent to the mounting hole 110 so as to be positioned at a position corresponding to the sub connection terminal 211 when the sub PCB 200 is inserted into the mounting hole 110 . .

Meanwhile, the main connection terminal 120 may be selectively formed on one side and both sides according to the case where the main PCB 100 is single-sided, double-sided, or the like. As an example, the main PCB 100 in the drawing shows a case in which a single-sided PCB is applied as an embodiment, and in this case, the main connection terminal 120 may be formed on one surface of the main PCB 100 .

The mounting hole 110 is formed to pass through one surface and the other surface of the main PCB 100 , and the sub PCB 200 is inserted therein. As shown, it penetrates in a direction perpendicular to one surface of the main PCB 100 can be formed. In this case, when the sub PCB 200 is inserted into the mounting hole 110 , the front and rear surfaces may be disposed in a direction perpendicular to one surface and the other surface of the main PCB 100 .

On the other hand, the mounting hole 110 is formed to be inclined rather than perpendicular to the main PCB, so that the penetrating angle can be varied, and through this, the assembly angle of the sub PCB 200 and the main PCB 100 can be different. can That is, the PCB substrate 400 of the present invention forms the mounting hole 100 to be inclined at a set angle with respect to one surface of the main PCB 100 according to design, etc., thereby assembling the sub PCB 200 to the main PCB 100 . By adjusting the angle, it is possible to provide an advantageous aspect to the electronic component layout design when coupled to an electronic device.

The mounting hole 110 is formed in a shape corresponding to the shape of the upper thickness surface of the sub PCB body 210 , and the front and rear surfaces of the sub PCB 200 are inserted into the inner surface of the mounting hole 110 to be adjacent or in close contact. It can be configured to be such that, through this, it is possible to prevent the sub-PCB body 210 inserted into the mounting hole 110 from shaking in the front-rear direction.

On the other hand, in the drawing, the mounting hole 110 may be formed so that the through hole 111 communicates with the other surface direction of the sub PCB 200 , and this through hole 111 is utilized as an insertion space for the electronic component to be assembled. Alternatively, it can be used in various ways, such as being used as a space for dissipating heat generated from the PCB assembly 400, and is formed in a rectangular shape on a plane in the drawing.

Hereinafter, the sub-PCB 200 will be described.

The sub PCB 200 is assembled to the main PCB 100 and electrically connected to the main PCB 100 , and may include a sub PCB body 210 and a locking part 220 .

The sub PCB body 210 is formed in a thin plate shape as shown, and is inserted into the mounting hole 110 with an upper thickness surface to be fitted into the main PCB 100 .

The sub-PCB body 210 may be provided with a sub-connection terminal 211 to be connected to the main-connection terminal 120 of the main PCB 100 . In the drawing, the sub-connection terminal 211 shows a case in which the sub-PCB body 210 is formed on the front and rear surfaces, respectively, and thus the main PCB 100 is adjacent to the mounting hole 110 and in the mounting hole 110 . The main connection terminal 120 may be formed at a position corresponding to the sub connection terminal 211 of the sub PCB body 210 to be inserted.

The locking part 220 is formed to protrude from at least one side of the front and rear surfaces of the sub PCB body 210 , and when the sub PCB body 210 is inserted into the mounting hole 110 , the main PCB 100 . By being in contact with the sub-PCB body 210, the insertion depth of the sub-PCB body 210 is limited and positioned at the set assembly position of the sub-PCB body 210.

In the drawing, the locking part 220 is coupled to the front and rear surfaces of the sub PCB body 210, respectively, and two protrusions are formed on the front surface of the sub PCB body 210 in pairs, and the rear surface of the sub PCB body 210 Two of them may be formed to protrude.

In addition, the locking part 220 may be located inside the sub-PCB body 210 to be spaced apart by a set length inward from both ends of the main body 210 .

In detail, the locking part 220 may be configured to include a first locking part 221 and a second locking part 222 .

One end of the first locking part 221 may be coupled to the front surface of the sub PCB body 210 , and the other end may be formed to protrude in the thickness direction (width direction) of the sub PCB.

In addition, the second locking part 222 may be formed so that one end is coupled to the rear surface of the sub-PCB body 210 and the other end protrudes in the width direction of the sub-PCB 200 .

Referring to FIG. 3 , the first locking part 221 and the second locking part 222 may be formed to protrude in a direction perpendicular to the front and rear surfaces of the sub PCB body 210 , and the sub PCB body 210 . ) may be formed in the same line on the front and back surfaces.

On the other hand, the first locking part 221 and the second locking part 222 are respectively formed as separate components, and are respectively bonded and fixed to the front and rear surfaces of the sub PCB body 210 , or of the sub PCB body 210 . It can be inserted and fixed in insertion grooves formed on the front and rear surfaces.

Alternatively, the first locking part 221 and the second locking part 222 may have one and the same configuration, and in this case, the sub-PCB body 210 has a through hole (not shown) formed along the width direction, , the locking part 220 may be inserted through the through-hole so that both ends protrude from the sub-PCB body 210 and fixed to the sub-PCB body 210 through an adhesive member or the like.

Alternatively, the locking part 220 can be manufactured in various ways, such as being integrally formed with the sub-PCB body 210 and manufactured together.

On the other hand, the main PCB 100 and the sub PCB 200, each one of a single-sided PCB, a double-sided PCB, a multi-layer PCB, a flexible (flexible) PCB, MCCL (Metal Copper Clad Laminate) and MLB (Multi Layer Board) to be composed of can

The soldering unit 300 serves to connect the main connection terminal 120 and the sub connection terminal 211 to each other by soldering, and to couple and fix the sub PCB 200 to the main PCB 100 .

The soldering part 300 is formed on one surface of the main PCB 100 as shown in FIG. 2 , and the sub of the sub PCB 200 inserted into the main connection terminal 120 and the mounting hole 110 by soldering. By bonding the connection terminals 211 to each other, the main PCB 100 and the sub PCB 200 are electrically connected to each other, and the sub PCB 200 and the main PCB 100 are fixedly coupled to each other.

At this time, the soldering part 300 may be formed on at least one side of the front and rear surfaces of the sub PCB 200 according to the formation positions of the main connection terminals 120 and the sub connection terminals 211 , and the main PCB Various embodiments are possible as long as the purpose of electrical connection of 100 and the sub-PCB 200 and coupling to each other can be achieved.

On the other hand, various embodiments such as the number, position, shape, and coupling angle of the locking part 220 are possible, and the sub-PCB 200 may also have various embodiments. Hereinafter, another embodiment of the locking unit 220 and the sub-PCB 200 will be described with reference to FIGS. 4 to 6 .

Referring to FIG. 4 , various embodiments of the sub-PCB 200a are possible by changing the number of first and second locking parts 221 and 222 in the locking part 220 .

Referring to FIG. 4 , each of the first locking part 221 and the second locking part 222 may be configured as one, and may be coupled to the front and rear surfaces of the sub-PCB body 210 one by one.

In this case, the first locking part 221 and the second locking part 222 are formed to be positioned diagonally and symmetrically to each other as shown so that they can be stably inserted and assembled with respect to the sub PCB body 210 in a more balanced manner. have.

Alternatively, although not shown, the first locking part 221 and the second locking part 222 may be positioned one at a time in the central part of the front and rear surfaces of the sub PCB body 210 to be positioned on the same line in plan view. .

Next, the sub-PCB (200b), the engaging portion (220a) may be coupled to be inclined with respect to the sub-PCB body (210).

Referring to FIG. 5 , the first locking part 221a and the second locking part 222a may be formed to protrude in an inclined direction with respect to the front and rear surfaces of the sub PCB body 210 , respectively.

In detail, the inclination direction of the first locking part 221a and the inclination direction of the second locking part 222a may be formed to be symmetrical with each other with the sub PCB body 210 interposed therebetween, as shown.

In this way, the sub PCB 200b having the engaging portion 220a coupled in an inclined direction with respect to the sub PCB body 210 is the sub PCB body ( 210) can support the sub-PCB body 210 more stably against the shaking of various angles in the front-rear direction.

Referring to FIG. 6 , the sub PCB 200c may be formed such that the sub PCB body 210a has an inclined surface 212 inclined inward from the outermost thickness surface.

The inclined surface 212 is to prevent jamming, and the end of the sub-PCB body 210a protrudes from the other surface of the main PCB 100, and the sub-PCB 200 due to jamming during the assembly process or transport. It serves to prevent the position from being changed or shaken.

Here, the inclined surface 212 may have various inclination angles in consideration of durability of the sub PCB 200 .

FIG. 7 shows another embodiment in which fitting parts 231,232 are formed in the hooking part 220 of the sub PCB 200d.

Referring to the drawing, the engaging portion 220, the fitting portion 231,232 may be formed on the upper surface in contact with the other surface of the main PCB (100a). The fitting portions 231,232 prevent slipping of the locking portion 220 with respect to the main PCB 100a when the sub PCB 200 and the main PCB 100a are assembled and fastened to each other, and the sub PCB 200 and the main PCB 100a. (100) serves to increase the binding force.

Here, the fitting portions 231,232 may be formed at the outermost ends of the first locking part 221 and the second locking part 222 as shown, but this is an embodiment of the first locking part 221 . And the second locking part 222 can be formed anywhere inside, and the number can also be variously changed.

On the other hand, on the other surface of the main PCB (100a), a fitting groove 130 into which the fitting parts 231,232 are fitted may be formed, and these fitting grooves 130 are formed to correspond to the position and shape of the fitting parts 231,232. can be

8 is a side cross-sectional view showing another embodiment of the main PCB 100b in which the stepped groove 111 is formed in the PCB substrate.

Accordingly, referring to FIG. 8 , the main PCB 100b may have a stepped groove 111 that communicates with the mounting hole 110 and into which the engaging portion 220 is inserted and seated.

Here, the stepped groove 111 is, when the sub PCB 210 body is inserted into the mounting hole 110, the engaging portion 220 is inserted and seated, the lower surface of the sub PCB 200 including the engaging portion 220 By not protruding from the other surface of the main PCB 100b, the sub-PCB 200 is prevented from being caught on the other surface of the main PCB 100b, as well as shaking of the sub-PCB body 210 inserted into the mounting hole 110. Prevents the main PCB (100b) and the sub PCB (200) to be stably coupled to each other, and further serves to reduce the thickness (height) of the engaging portion (220).

The stepped groove 111 may be formed to have a depth corresponding to the height of the engaging portion 220 as shown. However, it is formed to have a depth greater than the height of the locking part 220 so that the subPCB 200 including the locking part 220 does not protrude from the other surface of the main PCB 100b in one embodiment, or the locking part It is formed to have a depth smaller than the height of the part 220 so that when the sub-PCB 200 is inserted and mounted in the mounting hole 110, the sub-PCB 200 does not shake and can be configured to more stably secure its position. Various embodiments are possible with respect to the depth.

9 is another embodiment of the locking part 220b provided with the third locking part 241 in the PCB board according to the embodiment of the present invention and the main PCB in which the stepped groove 112 is formed in the main PCB 100c according to this. It is a plan view showing another embodiment of (100c).

Referring to FIG. 9 , the locking part 220b may further include a third locking part 241 provided at each end of the first locking part 221 and the second locking part 222 .

The third locking part 241 may be disposed in a direction perpendicular to or inclined with respect to the first locking part 221 and the second locking part 222 . In the drawing, the third locking part 241 is coupled in a direction perpendicular to the first locking part 221 and the second locking part 222 to have a substantially cross shape. However, as an embodiment, the third locking part 241 may be coupled in an inclined direction with respect to the first locking part 221 and the second locking part 222 .

On the other hand, when the third locking part 241 is formed in this way, the main PCB 100c has a cross-shaped step groove 112 corresponding to the shape of the cross-shaped locking part 220b as shown in FIG. 9 . can be formed.

In this case, when the sub PCB (200e) is inserted and seated in the stepped groove (112) of the main PCB (100c), the cross-shaped locking part (220b) can limit the movement in the left and right direction up and down, so that the sub PCB (200e) is seated. ) can secure its position more stably.

The PCB substrates 400 and 400a according to the embodiment of the present invention may be applied to various electronic devices, and may be applied to various electronic devices such as home appliances including TVs and communication products including communication equipment.

Although the present invention has been described with reference to the embodiment shown in the drawings, which is merely exemplary, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

100,100a,100b,100c : Main PCB
110: mounting hole
111,112: step groove
120: main connection terminal
130: fitting groove
200,200a,200b,200c,200d,200e : Sub PCB
210,210a: Sub PCB body
211: sub connection terminal
212: slope
220, 220a, 220b: locking part
221, 221a: first locking part
222,222b: second locking part
231,232: Fitting part
241: third locking part
300: soldering part
400,400a : PCB board

Claims (15)

a sub-PCB body having a sub-connection terminal for connection to the main-connection terminal of the main PCB; and
It is configured to include a locking portion formed to protrude from at least one side of the front and rear surfaces of the sub-PCB body,
The locking part,
a first locking part having one end coupled to the front surface of the sub-PCB body and the other end protruding in the width direction of the sub-PCB;
One end is coupled to the rear surface of the sub-PCB body and the other end is configured to include a second locking part protruding in the width direction of the sub-PCB,
Each of the first engaging portion and the second engaging portion,
It is formed to protrude in an inclined direction with respect to the front and rear surfaces of the sub PCB body,
The PCB board, characterized in that the inclination direction of the first locking part and the inclination direction of the second locking part are formed to be symmetrical to each other with the sub-PCB body interposed therebetween. delete The method of claim 1,
The locking part,
PCB board, characterized in that formed integrally with the sub-PCB body. a main PCB through which a mounting hole is formed on one surface;
A sub-PCB fastened to the main PCB and electrically connected to the main PCB; configured to include,
The sub-PCB,
a sub-PCB body inserted into the mounting hole and having a sub-connection terminal for connection to the main-connection terminal of the main PCB; and
It is formed to protrude from at least one side of the front and rear surfaces of the sub-PCB body, and includes a locking part that is in contact with the main PCB when the sub-PCB body is inserted into the mounting hole,
The locking part,
a first locking part having one end coupled to the front surface of the sub-PCB body and the other end protruding in the width direction of the sub-PCB;
One end is coupled to the rear surface of the sub-PCB body and the other end is configured to include a second locking part protruding in the width direction of the sub-PCB,
Each of the first engaging portion and the second engaging portion,
It is formed to protrude in an inclined direction with respect to the front and rear surfaces of the sub PCB body,
The PCB board, characterized in that the inclination direction of the first locking part and the inclination direction of the second locking part are formed to be symmetrical to each other with the sub-PCB body interposed therebetween. 5. The method of claim 4,
The PCB board according to claim 1, further comprising a soldering unit for bonding the main connection terminal and the sub connection terminal to each other by soldering and fixing the sub PCB to the main PCB. 6. The method of claim 5,
The sub-PCB body, the sub-connection terminals are formed on the front and rear, respectively,
The main PCB is a PCB board, wherein the main connection terminal is formed adjacent to the mounting hole at a position corresponding to the sub connection terminal of the sub PCB body inserted into the mounting hole. 5. The method of claim 4,
The locking part,
PCB board, characterized in that formed integrally with the sub-PCB body. delete 5. The method of claim 4,
The main PCB,
and a stepped groove communicating with the mounting hole and having the engaging portion inserted and seated when the sub-PCB body is inserted into the mounting hole. delete delete delete a main PCB through which a mounting hole is formed on one surface;
A sub-PCB fastened to the main PCB and electrically connected to the main PCB; configured to include,
The sub-PCB,
a sub-PCB body inserted into the mounting hole and having a sub-connection terminal for connection to the main-connection terminal of the main PCB; and
It is formed to protrude from at least one side of the front and rear surfaces of the sub-PCB body, and includes a locking part that is in contact with the main PCB when the sub-PCB body is inserted into the mounting hole,
The locking part,
a first locking part having one end coupled to the front surface of the sub-PCB body and the other end protruding in the width direction of the sub-PCB;
One end is coupled to the rear surface of the sub-PCB body and the other end is configured to include a second locking part protruding in the width direction of the sub-PCB,
The locking part,
It is provided at each end of the first engaging portion and the second engaging portion, and configured to further include a third engaging portion disposed in a direction perpendicular to or inclined with respect to the first and second engaging portions. Characterized by the PCB board. 6. The method of claim 5,
The main PCB and the sub PCB,
A PCB board characterized in that it is composed of any one of a single-sided PCB, a double-sided PCB, a multilayer PCB, a flexible PCB, a Metal Copper Clad Laminate (MCCL), and a Multi Layer Board (MLB), respectively. An electronic device using the PCB board according to any one of claims 4 to 7, 9, 13 and 14.

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