Circuit board connection structure

Abstract

The present invention relates to a circuit board coupling structure, and more particularly, provides a circuit board coupling structure comprising: a circuit board having an asymmetric portion which is one edge that is asymmetrically formed with respect to other edges; and a guide housing coupled to the circuit board, in which the guide housing includes: a support plate supporting a bottom of the circuit board; and a guide unit placed on one surface of the support plate in a direction corresponding to a direction in which the asymmetric portion is located.

Description

Technical Field

[0001] This application claims priority to Korean Patent Application No. 10-2022-0131857, filed on October 13, 2022, which is hereby incorporated by reference in its entirety.

[0002] The present invention relates to a circuit board coupling structure, and more particularly to a coupling structure for assembling circuit boards. Background Art

[0003] A printed circuit board (PCB) is an essential component for almost every electronic device, and is a printed circuit board that is wired and disposed on an insulating board so that a circuit connects electrical / electronic components. PCBs each have a structure in which conductors and insulators are stacked in the form of a board, and a plurality of electrical / electronic components such as semiconductors, capacitors, or resistors can be mounted thereon. The mounted electrical / electronic components can be electrically connected to each other through a wire circuit printed on the PCB. In the PCB, wires can be efficiently designed to reduce the size of electronic devices, and to improve their performance and productivity.

[0004] A plurality of electrical / electronic components mounted on a PCB can transmit or receive electrical signals. However, when the amount of electrical signals to be transmitted or received increases or high-speed processing of signals is required, a phenomenon of reduced signal processing speed occurs, which results in a decrease in the performance of the PCB. In order to solve the reduction in signal processing speed, the following methods are used, such as a method of increasing the number of layers of the PCB to increase the accommodating capacity of the components.

[0005] In the assembly process of mounting electrical / electronic components on a PCB, it is important to properly position the PCB to assemble the electrical / electronic components on the PCB in the design direction. When the PCB is positioned in a direction opposite to the design direction or is positioned at a small tilt angle, the electrical / electronic components to be mounted on the PCB may be mounted in an unintended direction or at an unintended position to cause a conflict problem between electrical signals transmitted or received between assembled electrical / electronic components of the fully assembled PCB, thereby causing the PCB to not function properly.

[0006] In addition, the PCB requires signal grounding to set the signal voltage reference point of the electrical signal transmitted or received between the electrical / electronic components mounted on the PCB. The introduction of noise into the electrical signal transmitted or received between the electrical / electronic components mounted on the PCB can be reduced by signal grounding. However, when the PCB is fixed using a rotating screw during the assembly process of the PCB, there may be a problem that the PCB is tilted at a small angle due to the torque of the rotating screw, and the connection of the signal grounding is lost.

[0007] Therefore, there is a need for technical development for solving the above-mentioned problems. Summary of the invention

[0008] Technical issues

[0009] An object of the present invention for solving the above-mentioned problems is to provide a circuit board connecting structure, in which one edge of the circuit board is set to be asymmetrical with each of the other edges of the circuit board, so that during the assembly process of assembling electronic components onto the circuit board, the circuit board connecting structure can intuitively determine whether the circuit board is placed in a predetermined direction, and can immediately perform position fixation and signal grounding of the circuit board on the guide housing.

[0010] Technical Solution

[0011] As one embodiment of the present invention, the present invention provides a circuit board connection structure, which includes: a circuit board, the circuit board includes an asymmetric part, one edge of the asymmetric part is asymmetric with each of the other edges; and a guide shell connected to the circuit board, wherein the guide shell includes: a support plate, the support plate supports the lower part of the circuit board; and a guide unit, the guide unit is placed on a surface of the support plate in a direction corresponding to the direction in which the asymmetric part is placed.

[0012] An edge of the asymmetric portion may be disposed in a diagonal direction with respect to another edge adjacent thereto.

[0013] The guide unit may include a guide portion having a shape corresponding to a shape of the asymmetric portion, and the asymmetric portion may be in contact with the guide portion.

[0014] The guide portion may extend in a direction perpendicular to one surface of the support plate.

[0015] The guide unit may further include a contact portion extending in one direction of the guide portion, and the asymmetric portion may contact the contact portion while being fitted and coupled between the contact portion and the support plate.

[0016] The guide unit may include a conductive material, a ground pattern to ground the circuit board may be defined in a top surface of the asymmetric portion, and the ground pattern and the contact portion may be electrically connected to each other.

[0017] The guide unit may further include an elastic clip protruding from the bottom surface of the contact portion, and the elastic clip may be made of an elastically deformable metal material. When the asymmetric portion is coupled to the guide unit, an end of the elastic clip may contact the ground pattern while elastically deforming in the direction in which the asymmetric portion is coupled.

[0018] The contact portion may be made of an elastically deformable metal material, and include: a pressing portion having a downwardly convex shape; and an inducing portion extending from the pressing portion in a distal direction and having an inclination inclined upward toward an end thereof.

[0019] The contact portion may have one edge coupled to one edge of the guide portion through a hinge, and the hinge may include a spring coupled to a rotation axis of the hinge and having one end fixed to the guide portion and the other end fixed to the contact portion.

[0020] The spring may be spirally coupled to the rotating shaft in a longitudinal direction of the rotating shaft, and the one end of the spring may extend in one direction of the spring, and the other end of the spring may extend in another direction of the spring.

[0021] The circuit board coupling structure may further include a coupling unit coupling the contact portion to the circuit board.

[0022] A first coupling hole having an inner surface coated with a conductive metal material may be defined on the ground pattern, and a second coupling hole may be coupled to the coupling unit and defined in the contact portion at a position corresponding to that of the first coupling hole. The coupling unit may be coupled to the first coupling hole and the second coupling hole.

[0023] The circuit board is separable from and coupled to the guide housing.

[0024] Beneficial effects

[0025] In the present invention, the shape of one edge of the circuit board can be set to be asymmetrical with the shape of the other edge, so that in the assembly process of assembling the electronic component onto the circuit board, it can be intuitively determined based on the position of the edge shape of the asymmetrical portion whether the circuit board is placed in a predetermined direction. Therefore, it is possible to prevent in advance the electronic component from being assembled in an unexpected direction due to a circuit board arrangement error during the assembly process.

[0026] In addition, the present invention can fix the circuit board to the guide housing (the guide housing will be connected to the circuit board) at one time to easily assemble the electronic components on the circuit board, and at the same time, the circuit board can be grounded to improve the efficiency of the assembly process. In addition, the asymmetric part of the circuit board can have a large-area grounding pattern, thereby increasing the contact area with the guide unit to improve the grounding function. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 (a) and (b) are schematic plan views showing examples of the position of a first coupling hole of a circuit board and the shape of the circuit board according to an embodiment of the present invention.

[0028] Figure 2(a) to (d) are perspective views showing various examples of ground patterns defined in an asymmetrical portion of a circuit board according to an embodiment of the present invention.

[0029] Figure 3 is a schematic plan view showing the configuration of a guide housing according to the present invention.

[0030] Figure 4 is a schematic plan view showing a configuration in which a circuit board is coupled to a guide housing according to the present invention.

[0031] Figure 5 (a) is along Figure 4 1 is a schematic cross-sectional view taken along line AA′ in FIG. 1 , showing an example of a configuration in which a circuit board is coupled to a guide housing and a contact portion. Figure 5 (b) to (d) are schematic cross-sectional views at the same position as that on the cross section shown in (a) above, showing configurations in which a circuit board is coupled to a guide housing and other examples of contact portions.

[0032] Figure 6 It is shown in Figure 5 (d) is a schematic plan view of a configuration according to the present invention in which a contact portion is coupled to a guide portion by a hinge.

[0033] Figure 7 is along Figure 4 1 , which is a schematic cross-sectional view taken along line AA′ in FIG. 1 , shows a configuration in which a circuit board is coupled to a guide housing through a coupling unit according to the present invention.

[0034] Figure 8 (a) and (b) are exploded views showing the shape of the tightening unit and the configuration in which the coupling unit is coupled to the tightening unit. DETAILED DESCRIPTION

[0035] Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention belongs can easily perform the present invention. However, the present invention can be implemented in different forms and should not be construed as being limited to the embodiments set forth herein.

[0036] In order to clearly describe the present invention, parts that are irrelevant to the description or detailed description of related well-known technologies that may unnecessarily obscure the subject matter of the present invention will be excluded. Throughout the specification, the same reference numerals denote the same elements.

[0037] Furthermore, the terms or words used in the present specification and claims should not be restrictively interpreted as ordinary meanings or dictionary-based meanings, but should be interpreted as meanings and concepts consistent with the scope of the present invention, based on the principle that the inventor can appropriately define the concepts of the terms in order to best describe and explain his or her invention.

[0038] Connection structure 10

[0039] As one embodiment of the present invention, a coupling structure 10 according to the present invention may include a circuit board 100 and a guide housing 200 .

[0040] The circuit board 100 may include various types of circuit boards, such as a printed circuit board (PCB), a flexible printed circuit board (FPCB), a rigid flexible printed circuit board (RF-PCB), or a high density interconnect (HDI), and may preferably be a PCB. However, the circuit board 100 is not limited thereto.

[0041] refer to Figure 1 In (a) and (b), the circuit board 100 may be provided in the form of a plate and have an asymmetrical shape. The circuit board 100 may include an asymmetrical portion 110 , a ground pattern 120 , and a first coupling hole 130 .

[0042] The circuit board 100 may include an asymmetrical portion 110 on one edge portion thereof so that the circuit board 100 appears asymmetrical.

[0043] The asymmetric portion 110 may be provided in the form of a linear edge in a diagonal direction relative to each of the other edges adjacent thereto, and may be provided asymmetric relative to a vertex or edge portion of the circuit board 100 disposed in a diagonal direction to the asymmetric portion 100 .

[0044] The asymmetric portion 110 may have a shape different from a shape of each of vertices of the circuit board 100 disposed on an end of an edge adjacent to the asymmetric portion 110 .

[0045] Due to the asymmetric portion 110, when electronic components are assembled on the circuit board 100, it can be immediately checked whether the circuit board 100 is placed in a predetermined direction. The asymmetric portion 110 can be provided only on one of the edges of the circuit board 100 and only in a predetermined direction. Therefore, when the circuit board 100 is rotated 180 degrees around an axis perpendicular to one surface thereof, a worker can position the asymmetric portion 110 to correct the arrangement of the circuit board 100 so that the asymmetric portion 110 is placed in a predetermined direction.

[0046] refer to Figure 2(a) to (d), the ground pattern 120 may be defined in the asymmetric portion 110 .

[0047] The ground pattern 120 may be a component for grounding the circuit board 100 signal to reduce noise such as electromagnetic interference (EMI) or electrostatic discharge (ESD), which is a factor that degrades the performance of the circuit board 100 , and generating a reference voltage for signals transmitted and received between electronic components mounted on the circuit board 100 .

[0048] The ground pattern 120 may be provided to have a predetermined area and a predetermined number on a top surface or a side surface of the asymmetric portion 110 so that a contact area between the ground pattern 120 and the guide unit 220 increases to improve a grounding function.

[0049] refer to Figure 2 (a), as an embodiment, the ground pattern 120 may be defined in the top surface of the asymmetric portion 110. The circuit board 100 may be coupled to the guide housing 200, and the guide unit 220 of the guide housing 200 to be described later and the asymmetric portion 110 may be coupled to each other. The ground pattern 120 defined in the top surface of the asymmetric portion 110 may contact and be electrically connected to the bottom surface of the contact portion 222 of the guide unit 220, and the circuit board 100 may be grounded.

[0050] refer to Figure 2 (b), as another embodiment, the ground pattern 120 may be defined in one end of the asymmetric portion 110. When the circuit board 100 is coupled to the guide housing 200, the one end of the asymmetric portion 110 may contact the guide portion 221 of the guide unit 220 having a shape corresponding to that of the asymmetric portion 110.

[0051] refer to Figure 2 (c), as yet another embodiment, the ground pattern 120 may be defined in each of the top surface and one end of the asymmetric portion 110. Since the ground pattern 120 is defined in each of the top surface and one end contacting the guide unit, the contact area between the ground pattern 120 and the guide unit may be increased.

[0052] refer to Figure 2 (d), as another embodiment, the ground pattern 120 may be defined to extend from the top surface of the asymmetric portion 110 to one end. The area of ​​the ground pattern 120 may be increased to increase the contact area with the guide unit 220 and improve the signal grounding function of the circuit board 100.

[0053] The ground pattern 120 may include a conductive metal material so as to be electrically connected to the guide unit 220. The metal material may be, for example, copper, gold, silver, aluminum, etc., but is not limited thereto.

[0054] A first coupling hole 130 is defined on the circuit board 100 , and the first coupling hole 130 is a groove penetrating the circuit board 100 or having a predetermined depth. A coupling unit 300 to be described later may be coupled to the first coupling hole 130 .

[0055] refer to Figure 1 (a) and (b), for example, the first coupling hole 130 may be defined on the ground pattern 120 or defined at a position spaced a predetermined distance from the ground pattern 120, but the position of the first coupling hole 130 is not limited thereto.

[0056] refer to Figure 3 and Figure 4 The guide housing 200 may be coupled to the circuit board 100 to ground the circuit board 100 signal, and may support and fix the circuit board 100 so that electronic components are easily mounted on the circuit board 100. The circuit board 100 can be coupled to and separated from the guide housing 200.

[0057] The guide housing 200 may include a support plate 210 and a guide unit 220 .

[0058] The support plate 210 may be provided in the form of a plate having an area greater than that of the top surface of the circuit board 100. When the circuit board 100 is coupled to the guide unit 220, the support plate 210 may support a lower portion of the circuit board 100.

[0059] The guide unit 220 may be disposed on the support plate 210 .

[0060] The guide unit 220 may be coupled to the asymmetric portion 110 of the circuit board 100. The position at which the guide unit 220 is disposed on the support plate 210 may correspond to the direction in which the asymmetric portion 110 is disposed on the circuit board 100. That is, the guide unit 220 may be disposed on the support plate 210 to be biased in a direction in which one vertex of the support plate 210 is positioned.

[0061] The guide unit 220 may include a conductive metal material so as to be electrically connected to the ground pattern 120. The metal material may be, for example, copper, gold, silver, aluminum, etc., but is not limited thereto. Each of the guide portion 221 and the contact portion 222 included in the guide unit 220 may also be made of a conductive metal material.

[0062] Since the guiding unit 220 is also signal-grounded, the guiding unit 220 may be electrically connected to the ground pattern 120 to signal-ground the circuit 100 .

[0063] The guide unit 220 may include a guide portion 221 and a contact portion 222 .

[0064] The guide portion 221 may have an inner surface having a shape corresponding to the shape of each of the front surface and the side surface of the asymmetric portion 110. In the guide portion 221, when the circuit board 100 is coupled to the guide housing 200, the asymmetric portion 110 may be guided along the inner surface of the guide portion 221 to be seated on a seating portion 221a provided inside the guide portion 221. The position of the circuit board 100 on the support plate 210 may be fixed by the asymmetric portion 110 seated on the guide portion 221. Since the position of the circuit board 100 is fixed on the support plate 210 as described above, when each of the contact portions 222, 230, and 240 and the circuit board 100 are subsequently coupled to each other by the coupling unit 300, the movement of the circuit board 100 may be reduced, and the coupling may be easily performed.

[0065] The guide portion 221 may extend in a direction perpendicular to one surface of the support plate 210. The guide portion 221 may extend to have a height that is the same as or greater than the thickness of the circuit board 100.

[0066] Reference Figure 5 (a) to (d), the contact portion 222 may be a member extending from a top surface or one side of the guide portion 221 in one direction to contact the ground point 120 provided on the top surface of the asymmetric portion 110 .

[0067] refer to Figure 5 (a), as an embodiment, the contact portion 222 may extend from an upper portion or one side of the guide portion 221 toward a direction in which the asymmetric portion 110 is coupled to the guide portion 221. Here, the contact portion 222 may have a shape fixed to the guide portion 221, and a spacing distance between the contact portion 222 and the support plate 210 may be the same as the thickness of the asymmetric portion 110, or slightly smaller than the thickness of the asymmetric portion 110. When the asymmetric portion 110 slides on the support plate 210 toward a direction in which the guide unit 220 is placed, in order to be coupled to the guide unit 220, the asymmetric portion 110 may be press-fitted and coupled to a space between the contact portion 222 and the support plate 210, and the contact portion 222 and the guide portion 221 may contact and be electrically connected to the ground pattern 120 of the asymmetric portion 110.

[0068] refer to Figure 5(b), as another embodiment, an elastic clip 222a may be coupled to the contact portion 222. The elastic clip 222a may be coupled to protrude from the bottom surface of the contact portion 222, and may have an inclination inclined in the direction in which the asymmetric portion 110 is coupled to the guide unit 220. The elastic clip 222a may be made of a metal material that can be elastically deformed within an elastic deformation range, and the metal material may be, for example, copper, gold, silver, aluminum, iron, zinc, etc. When the asymmetric portion 110 is introduced into the seating portion 221a, the elastic clip 222a may be elastically deformed by the force of the asymmetric portion 110 pushing the elastic clip 222a in the direction in which the asymmetric portion 110 is coupled, and the elastic clip 222a may be in contact with and electrically connected to the grounding point 120 provided on the top surface of the asymmetric portion 110. The elastic clip 222a may be provided in one or more.

[0069] The elastic clip 222a may be provided to have a predetermined width and length, and to have a relatively small thickness compared to each of the width and the length.

[0070] Reference Figure 5 (c), as another embodiment, the contact portion 230 may extend from an upper portion or one side of the guide portion 221 toward a direction in which the asymmetric portion 110 is coupled to the guide portion 221, and may be made of a conductive metal material that can be elastically deformed within an elastic deformation range. The contact portion 230 may include a pressing portion 230a and an inducing portion 230b.

[0071] The pressing portion 230 a may have a downwardly convex shape, and when the asymmetric portion 110 is coupled to the guide portion 221 , the lowest point of the pressing portion 230 a may contact the ground pattern 120 while pressing the ground pattern 120 of the asymmetric portion 110 .

[0072] The inducing portion 230b may extend from the pressing portion 230a in the distal direction at the distal end of the contact portion 230 to have an inclination that is inclined upward toward one end thereof. When the asymmetric portion 110 slides in the direction in which the guide portion 221 is placed, the inducing portion 230b may contact the asymmetric portion 110, and the asymmetric portion 110 may move while pushing the inducing portion 230b upward. Therefore, the inclination set on the inducing portion 230b may be deformed to be increasingly steep. When the inclination of the inducing portion 230b is deformed to be increasingly steep, the pressing portion 230a may be electrically connected to the ground pattern 120 while pressing the top surface of the asymmetric portion 110 due to the elastic restoring force.

[0073] refer to Figure 5 (d) and Figure 6As another embodiment, one edge of the contact portion 240 may be coupled to an edge portion of the guide portion 221 by a hinge 241. The contact portion 240 may rotate around the rotation axis of the hinge 241. The hinge may include a spring 242 in the form of a coil, which is spirally wound in the longitudinal direction of the rotation axis and coupled to the rotation axis. One end and the other end of the spring 242 may extend along the spiral in one and another direction of the spring 242, respectively. One end may be fixed to the top surface of the guide portion 221, and the other end may be fixed to the top surface of the contact portion 240. When the contact portion 240 rotates in a direction in which the distal end of the contact portion 240 is away from the support plate 210, the spring 242 may apply an elastic force so that the one end fixed to the guide portion 221 rotates in the same direction as the rotation direction of the contact portion 240, and the other end fixed to the contact portion 240 rotates again in the direction opposite to the rotation direction of the contact portion 240. When the asymmetric portion 110 approaches the guide unit 220 to be coupled to the guide unit 220, the distal end of the contact portion 240 may rotate in a direction away from the support plate 210 to define a space in which the asymmetric portion 110 can be coupled to the guide portion 221. After the asymmetric portion 110 is coupled to the guide portion 221, the contact portion 240 may contact and be electrically connected to the ground pattern 120 defined on the top surface of the asymmetric portion 110 due to the elastic force of the spring 242.

[0074] The circuit board coupling structure 10 may further include a coupling unit 300 .

[0075] Reference Figure 7 , the coupling unit 300 may fix and couple each of the contact portions 222 , 230 , and 240 and the circuit board 100 to each other so that the circuit board 100 is completely fixed to the guide housing 200 .

[0076] The first coupling hole 130 may be defined in the circuit board 100, and the second coupling holes 222b, 230c, and 240a may be respectively defined in the contact portions 222, 230, and 240. The first coupling hole 130 and each of the second coupling holes 222b, 230c, and 240a may be coupled by the coupling unit 300.

[0077] As an embodiment, the first coupling hole 130 may be defined at a position spaced apart from the ground pattern 120 by a predetermined distance, and each of the second coupling holes 222b, 230c, and 240a may be defined at a position corresponding to the first coupling hole 130. The coupling unit 300 may be inserted into and coupled to each of the first coupling hole 130 and the second coupling holes 222b, 230c, and 240a so as to couple each of the contact portions 222, 230, and 240 to the circuit board 100.

[0078] As another embodiment, the first coupling hole 130 may be defined on the ground pattern 120 of the asymmetric portion 110, and each of the second coupling holes 222b, 230c, and 240a may be defined at a position corresponding to the first coupling hole 130. Therefore, the first coupling hole 130 may be coupled to each of the second coupling holes 222b, 230c, and 240a through the coupling unit 300. The inner surface of the first coupling hole 130 may be coated with the same conductive metal material as the ground pattern 120 along its periphery, and the coated inner surface may be connected to the ground pattern 120. The second coupling holes 222b, 230c, and 240a may be made of the same conductive metal material as the contact portions 222, 230, and 240, respectively. Since the coupling unit 300 is also made of a conductive metal material, each of the first coupling hole 130 and the second coupling holes 222b, 230c, and 240a may be electrically connected by the coupling unit 300 coupled to each of the first coupling hole 130 and the second coupling holes 222b, 230c, and 240a.

[0079] refer to Figure 8 As another embodiment, the coupling unit 300 may include a tightening unit 310 coupled to the coupling unit 300. The tightening unit 310 may include a body portion 311 and a flange 312. An opening portion may be defined in each of the top surface and the bottom surface of the body portion 311, and a hollow portion may be defined therein so that the top surface, the bottom surface, and the hollow portion are connected to each other. The body portion 311 may have a cylindrical shape and may have a cross-sectional area that gradually decreases from the top surface to the bottom surface. A slit groove 311a may be defined in the body portion 311 so as to be elongated in the longitudinal direction of the body portion 311. When the tightening unit 310 is inserted into each of the first coupling hole 130 and the second coupling holes 222b, 230c and 240a, and the coupling unit 300 is coupled through the opening portion defined in the top surface of the body part 311, the coupling unit 310 can widen the gap of the slit groove 311a, and the body part 311 can be in close contact with each of the first coupling hole 130 and the second coupling holes 222b, 230c and 240a. The tightening unit 310 can be made of a plastically deformable metal with conductivity so that it is easy to change the shape. The flange 312 can be bent outward from the upper end of the body part 311.

[0080] Although the present invention has been described with reference to limited embodiments and drawings, the present invention is not limited thereto and may be variously implemented by those skilled in the art to which the present invention pertains within the technical concept of the present invention and equivalents of the appended claims.

[0081] [Description of symbol]

[0082] 10: Circuit board connection structure

[0083] 100: Circuit board

[0084] 110: Asymmetric part

[0085] 120: Ground pattern

[0086] 130: First connection hole

[0087] 200: Boot housing

[0088] 210: Support plate

[0089] 220: Guidance unit

[0090] 221: Boot section

[0091] 221a: Settlement section

[0092] 222, 230, 240: Contact parts

[0093] 222a: Elastic clip

[0094] 222b, 230c, 240a: second connection hole

[0095] 230a: Extrusion part

[0096] 230b: Induction section

[0097] 241: Hinge

[0098] 242: Spring

[0099] 300: Connection unit

[0100] 310: Tightening unit

Claims

1. A circuit board connection structure, comprising: A circuit board including an asymmetric portion, one edge of the asymmetric portion being asymmetric to each of the other edges; as well as a guide housing coupled to the circuit board, Wherein, the guide housing comprises: a support plate configured to support a lower portion of the circuit board; and A guide unit is disposed on one surface of the support plate in a direction corresponding to a direction in which the asymmetric portion is disposed.

2. The circuit board connection structure according to claim 1, wherein: The edge of the asymmetric portion is disposed in a diagonal direction with respect to another edge adjacent thereto.

3. The circuit board connection structure according to claim 2, wherein: the guide unit includes a guide portion having a shape corresponding to that of the asymmetric portion, Wherein, the asymmetric portion is in contact with the guide portion.

4. The circuit board connection structure according to claim 3, wherein: The guide portion extends in a direction perpendicular to one surface of the support plate.

5. The circuit board connection structure according to claim 3, wherein: The guide unit further includes a contact portion extending in one direction of the guide portion, wherein the asymmetric portion contacts the contact portion while being fitted and coupled between the contact portion and the support plate.

6. The circuit board connection structure according to claim 5, wherein: The guide unit includes a conductive material, and a ground pattern configured to ground the circuit board is defined in a top surface of the asymmetric portion, Wherein, the ground pattern and the contact portion are electrically connected to each other.

7. The circuit board connection structure according to claim 6, wherein: The guide unit further includes an elastic clip protruding from a bottom surface of the contact portion, Wherein, the elastic clip is made of elastically deformable metal material, and When the asymmetric portion is coupled to the guide unit, one end of the elastic clip contacts the ground pattern while being elastically deformed in a direction in which the asymmetric portion is coupled.

8. The circuit board connection structure according to claim 6, wherein: The contact portion is made of an elastically deformable metal material and comprises: a pressing portion having a downwardly convex shape; and An inducing portion extends from the pressing portion in a distal direction and has an inclination that slopes upward toward an end thereof.

9. The circuit board connection structure according to claim 6, wherein: One edge of the contact portion is coupled to one edge of the guide portion by a hinge, Wherein, the hinge includes a spring, the spring is coupled to a rotation axis of the hinge, and the spring has one end fixed to the guide portion and the other end fixed to the contact portion.

10. The circuit board connection structure according to claim 9, wherein: The spring is spirally coupled to the rotating shaft in a longitudinal direction of the rotating shaft, and The one end of the spring extends in one direction of the spring, and the other end of the spring extends in another direction of the spring. 11 . The circuit board coupling structure according to claim 5 , further comprising a coupling unit configured to couple the contact portion to the circuit board.

12. The circuit board connection structure according to claim 11, wherein: A first coupling hole is defined on the ground pattern, the first coupling hole having an inner surface coated with a conductive metal material, and A second coupling hole is coupled to the coupling unit and is defined at a position in the contact portion corresponding to a position of the first coupling hole, Wherein, the coupling unit is coupled to the first coupling hole and the second coupling hole.

13. The circuit board connection structure according to claim 1, wherein: The circuit board is separable from and coupled to the guide housing.

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