KR20220030791A - Sub pcb, pcb assembly board including the same, and electronic devices using the same - Google Patents

Abstract

The present invention may provide a PCB assembly substrate comprising: a main PCB with a mounting hole penetrating one surface thereof; and a sub-PCB fastened to the main PCB and electrically connected to the main PCB, wherein the sub-PCB comprises a sub-PCB main body inserted into the mounting hole and formed with a sub-connection terminal for connection with a main connection terminal of the main PCB, and a locking pin located at the back with respect to an insertion direction, coupled to the sub-PCB main body to protrude from a front surface and a rear surface of the sub-PCB main body, and contacted to the main PCB by being hung to the main PCB when the sub-PCB main body is inserted into the mounting hole. Therefore, the present invention can provide an effect of improving workability and productivity.

Description

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

The present invention relates to a sub-PCB, a PCB assembly board including the same, and an electronic device using the same, and more particularly, to a PCB assembly board applied to various electronic devices. It relates to a sub-PCB that is assembled and coupled to each other, a PCB assembly board including the same, and an electronic device using the same.

In general, a product performing a circuit function includes a main circuit performing a main function and an auxiliary circuit selectively employed. The main circuit is installed in the product to perform the main function of the electrical and electronic product, and the auxiliary circuit is the main function It is used to give new functions that add additional functions to

On the other hand, recently, as new functions or new models are developed day by day, the functions of auxiliary circuits are frequently improved and the main circuit must be changed. They are electrically connected to each other through a connector, and the sub printed circuit board is replaced when the function is upgraded.

As an example of the technology for such a main printed circuit board and a sub printed circuit board, Korean Patent Application Laid-Open No. 10-2010-0008574 discloses a printed circuit board, a pad provided at one end of the printed circuit board, and selectively detachable from the pad. A PCB assembly comprising a multi-connector capable of being coupled has been disclosed.

However, since the conventional main printed circuit board and the sub printed circuit board require a separate connector that meets the standard, the manufacturing cost is required accordingly, and the work process according to the connector assembly is increased, so that workability and There was a problem of lowering productivity.

Republic of Korea Patent Publication No. 10-2010-0008574

According to the present invention, it is possible to reduce manufacturing cost and simplify the assembly process by allowing the main PCB and the sub PCB to be easily coupled to each other without the need for a separate connector for fastening the main PCB and the sub PCB. An object of the present invention is to provide a sub-PCB capable of improving workability and productivity, a PCB assembly board including the same, and an electronic device using the same.

According to one aspect of the present invention, the present invention, a sub-PCB body formed with a sub-connection terminal for connection to the main-connection terminal of the main PCB; and a locking pin coupled to the sub-PCB body so as to protrude from the front and rear surfaces of the sub-PCB body.

Here, the locking pin may be formed so that both ends protrude from the front and rear surfaces of the sub PCB body through the rear thickness surface of 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 pin positioned at the rear with respect to the insertion direction, coupled to the sub PCB body so as to protrude from the front and rear surfaces of the sub PCB body, and contacting the main PCB when the sub PCB body is inserted into the mounting hole. A PCB assembly board can be provided.

Furthermore, 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, in the sub PCB body, sub connection terminals are formed on one side and the other side, respectively, and the main PCB is adjacent to the mounting hole and the main connection terminal is formed at a position corresponding to the sub connection terminal of the sub PCB body inserted into the mounting hole. can be

Here, the locking pin may be formed so that both ends protrude from the front and rear surfaces of the sub PCB body through the rear thickness surface of the sub PCB body.

In addition, the locking pins may be disposed in a direction perpendicular to the front and rear surfaces of the sub-PCB body.

In addition, the locking pins may be disposed in an inclined direction with respect to the front and rear surfaces of the sub PCB body.

In addition, the locking pins may be coupled to both rear ends of the sub PCB body as a pair, respectively.

On the other hand, the locking pin is formed by bending the end to 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, a bent fitting portion to be fitted into the fitting groove formed on the other surface of the main PCB may be formed.

Furthermore, the locking pin is coupled to the first locking pin which is installed through the sub PCB body and both ends protrude from the front and rear of the sub PCB body, and in a direction perpendicular to or inclined to one or both ends of the first locking pin. It may be configured to include a second locking pin.

Accordingly, 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 locking pin is inserted and seated may be formed.

Furthermore, each of the main PCB and the sub PCB may be configured with 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).

According to another aspect of the present invention, the present invention can provide an electronic device using a PCB assembly board.

The sub-PCB according to the present invention, the PCB assembly board including the same, and the electronic device using the same are easily assembled with the main PCB and the sub-PCB without separate components such as connectors and sockets. It is possible to improve the economic feasibility as well as to provide the effect of improving the workability and productivity by simplifying the assembly operation.

1 is an exploded perspective view showing a PCB assembly board according to an embodiment of the present invention.
2 is a front view of a PCB assembly board according to an embodiment of the present invention.
3 is a plan view illustrating a sub-PCB in a plan view in a PCB assembly board according to an embodiment of the present invention.
4 is a plan view showing another embodiment of a sub-PCB showing a case in which coupling pins are inclinedly coupled to a PCB assembly board according to an embodiment of the present invention.
5 is a side view showing another embodiment of a sub-PCB in which a bent fitting portion is formed on a coupling pin in a PCB assembly board according to an embodiment of the present invention.
6 is a side cross-sectional view showing another embodiment of the main PCB in which the stepped groove is formed in the PCB assembly board according to the embodiment of the present invention.
7 is a plan view showing another embodiment of a sub-PCB having a cross-shaped locking pin in a PCB assembly board according to an embodiment of the present invention.
8 is a plan view showing another embodiment having a cross-shaped locking pin in the PCB assembly board according to the embodiment of the present invention and another embodiment of the main PCB having a stepped groove formed in the main PCB according to the present invention.

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 mean 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. And, 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 assembly 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 Since the PCB 200 is configured to be assembled and fastened to each other, it is possible to improve economic efficiency by reducing the cost of components, and furthermore, it is possible to simplify the assembly process, thereby improving workability and productivity. In addition, since the PCB assembly board 400 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 without separate parts and coupling fixation 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 assembly board 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 The 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 100, 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 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 pin 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 pin 220 is coupled to the sub PCB body 210 so as to protrude from 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 ) to limit the insertion depth of the sub-PCB body 210 and to position the sub-PCB body 210 at a set assembly position.

The locking pin 220 may be formed so that both ends protrude from the front and rear surfaces of the sub PCB body 210 by penetrating the rear thickness surface of the sub PCB body 210 in the insertion direction.

The locking pin 220 may be formed of a metal material or the same material as the sub-PCB body 210, but is not limited thereto.

Referring to FIG. 3 , the locking pins 220 may be installed in a direction perpendicular to the front and rear surfaces of the sub PCB body 210 .

In addition, the locking pin 220 is horizontally disposed so as to be parallel to the thickness surface of the sub PCB body 210 , the inclination of the sub PCB body 210 inserted into the mounting hole 110 and the main PCB 100 It may be configured to prevent the occurrence of lifting.

The locking pins 220 may be respectively coupled to both ends of the rear side of the sub-PCB body 210 as a pair as shown. However, this is an embodiment, and the locking pin 220 may be configured as one and coupled to the central portion of the sub-PCB body 210 or symmetrically.

On the other hand, the locking pin 220 is inserted through the through hole 211 (refer to FIG. 4) of the sub PCB body 210, and then press-fitted into the through hole 211 to be fixedly coupled with the sub PCB body 210. can be fixedly coupled in this way.

Alternatively, in another embodiment, the locking pin 220 is inserted into the through-hole 211 in consideration of the thickness of the sub-PCB body 210 and then an adhesive is applied to the through-hole 211 so that the sub-PCB body 210 and the sub-PCB body 210 and Various embodiments are possible, such as being fixedly coupled.

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.

In this case, 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 it is possible to achieve the purpose of making the electrical connection of the 100 and the sub-PCB 200 to be fixed to each other.

Hereinafter, various embodiments of the locking pin 220 will be described.

First, referring to FIG. 4 , the locking pins 220 may be installed through the front and rear surfaces of the sub PCB body 210 in an inclined direction.

In this case, the sub PCB (200a) is more stable against the shaking of various angles in the front and rear directions of the sub PCB body 210 as much as the locking pin 220 is in contact with the main PCB 100 inclinedly. ) can be supported, and the contact area with the through-hole 211 of the sub-PCB body 210 can be increased, so that the fixing force with the sub-PCB body 210 can be improved.

On the other hand, the locking pins 220 may be respectively installed at both ends of the sub-PCB body 210 as shown as a pair. At this time, each of the locking pins 220 may be disposed parallel to each other, but is not limited thereto.

The locking pin 220 may be inclined at a set angle with respect to the sub PCB body 210 , and the set angle at this time may be varied in consideration of the length of the locking pin 220 .

5 is a view showing another embodiment of the locking pin (220a) of the present invention.

Referring to the drawings, the locking pin 220a is bent to the upper surface in contact with the other surface of the main PCB 100a at the end thereof, and when the sub PCB body 210 is inserted into the mounting hole 110 , the main PCB 100a ) may be formed with a bent fitting portion 221 fitted into the fitting groove 130 formed on the other surface.

This bent fitting portion 221 prevents slipping of the locking pin 220a with respect to the main PCB 100a when the sub PCB 200b and the main PCB 100a are assembled and fastened to each other, and the sub PCB 200b and the main PCB 100a It serves to increase the binding force of the PCB (100a).

Here, the bent fitting portion 221 may be formed integrally with the locking pin 220a as shown and bent from the outermost end of the locking pin 220a.

Meanwhile, the fitting groove 130 may be formed to correspond to the shape and size of the bent fitting portion 221 as shown.

6 is a side cross-sectional view showing another embodiment of the main PCB (100b) in the PCB assembly board according to the embodiment of the present invention.

Referring to FIG. 6 , the main PCB 100b may have a stepped groove 111 that communicates with the mounting hole 110 and into which the locking pin 220 is inserted and seated.

Here, in the step groove 111 , when the sub PCB 210 body is inserted into the mounting hole 110 , the locking pin 220 is inserted and seated so that the lower surface of the sub PCB 200 including the locking pin 220 is 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. to prevent the main PCB (100b) and the sub PCB (200) to be stably coupled to each other, and further serves to reduce the diameter of the locking pin (220).

The stepped groove 111 may be formed to a depth corresponding to the diameter of the locking pin 220 as shown. However, it is formed to have a depth greater than the diameter of the locking pin 220 so that the sub PCB 200 including the locking pin 220 does not protrude from the other surface of the main PCB 100b in one embodiment, or It is formed to have a depth smaller than the diameter of the pin 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.

7 is a plan view showing another embodiment of a sub-PCB 200c having a cross-shaped locking pin 220b in a PCB assembly board according to an embodiment of the present invention.

Referring to FIG. 7 , the locking pin 200b is installed through the sub PCB body 210 and both ends protrude from the front and rear of the sub PCB body 210 , the first locking pin 231 , and the first locking pin 231 . It may be configured to include a second locking pin 232 coupled to one or both ends of the pin 231 .

Here, the second locking pin 232 may be coupled in a direction perpendicular to or inclined with respect to the first locking pin 231 . In the drawing, the second locking pin 232 is coupled in a direction perpendicular to the first locking pin 231 and is formed to have a substantially cross shape. However, as an example, the second locking pin 232 may be coupled in an inclined direction with respect to the first locking pin 231 as a matter of course.

On the other hand, here, the coupling method of the first locking pin 231 and the second locking pin 232 may be varied according to the material thereof. For example, when the first locking pin 231 and the second locking pin 232 are made of the same material, they may be integrally manufactured. Alternatively, when the first locking pin 231 and the second locking pin 232 are made of a resin-based material, they may be joined to each other, and in the case of a metal material, various combinations are possible, such as welding.

Furthermore, the second locking pin 232 may be coupled to only one end of the first locking pin 231 as shown. This is considering the penetration coupling to the sub PCB body 210, and the locking pin 220b is inserted into the insertion end that is inserted through the sub PCB body 210 without coupling the second locking pin 232 for insertion. It may be configured to couple the second locking pin 232 to the end opposite to the end.

On the other hand, in this case, the sub-PCB (200c), as shown, it is preferable to be positioned symmetrically at both ends of the sub-PCB body 210 to achieve a mutual balance.

Referring to Figure 8, the main PCB (100c), when the cross-shaped locking pin 220b is formed in this way, a cross-shaped stepped groove 112 corresponding to the shape of the locking pin 220b is formed to form the locking pin. (220b) may be configured to be inserted and seated.

The PCB assembly board 400 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, it will be understood by those skilled in the art 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 : Sub PCB
210: Sub PCB body
211: through hole
220,220a, 220b : locking pin
221: bent fitting part
231: first locking pin
232: second locking pin
300: soldering part
400: PCB assembly board

Claims (14)

a sub-PCB body having a sub-connection terminal for connection to the main-connection terminal of the main PCB; and
A sub-PCB comprising a locking pin coupled to the sub-PCB body so as to protrude from the front and rear surfaces of the sub-PCB body. The method of claim 1,
The locking pin is
The sub-PCB, characterized in that formed so that both ends protrude from the front and rear surfaces of the sub-PCB body through the rear thickness surface of 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 located at the rear with respect to the insertion direction, is coupled to the sub PCB body so as to protrude from the front and rear surfaces of the sub PCB body, and includes a locking pin that is engaged with the main PCB when the sub PCB body is inserted into the mounting hole. PCB assembly board, characterized in that it is configured. 4. The method of claim 3,
The PCB assembly board according to claim 1, further comprising a soldering part 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. 5. The method of claim 4,
The sub-PCB body, the sub-connection terminals are formed on one surface and the other surface, respectively,
The main PCB assembly board, characterized in that 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 pin is
PCB assembly board, characterized in that the both ends are formed to protrude from the front and rear surfaces of the sub-PCB body through the rear thickness surface of the sub-PCB body. 5. The method of claim 4,
The locking pin is
PCB assembly board, characterized in that disposed in a direction perpendicular to the front and rear of the sub-PCB body. 5. The method of claim 4,
The locking pin is
PCB assembly board, characterized in that disposed in an inclined direction with respect to the front and rear surfaces of the sub-PCB body. 5. The method of claim 4,
The locking pin is
PCB assembly board, characterized in that each coupled to the rear both ends of the sub-PCB body as a pair. 5. The method of claim 4,
The locking pin is
PCB assembly, characterized in that the end is bent to the upper surface in contact with the other surface of the main PCB, and a bent fitting part is formed to be fitted into the fitting groove formed in the other surface of the main PCB when the sub PCB body is inserted into the mounting hole. Board. 5. The method of claim 4,
The locking pin is
a first locking pin installed through the sub-PCB body and both ends projecting from the front and rear of the sub-PCB body;
PCB assembly board comprising a second locking pin coupled in a direction perpendicular to or inclined to one or both ends of the first locking pin. 5. The method of claim 4,
The main PCB,
A PCB assembly board, wherein a stepped groove is formed in communication with the mounting hole and into which the locking pin is inserted and seated when the sub-PCB body is inserted into the mounting hole. 6. The method of claim 5,
The main PCB and the sub PCB,
PCB assembly board, characterized in that it is composed of any one of single-sided PCB, double-sided PCB, multi-layer PCB, flexible PCB, MCCL (Metal Copper Clad Laminate) and MLB (Multi Layer Board), respectively. An electronic device using the PCB assembly board according to any one of claims 3 to 13.

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