Mounted substrate and electronic apparatus

Abstract

To restrain electrostatic discharge damage at the time of attachment of a receptacle connector.SOLUTION: A mounted substrate comprises: a substrate; a surface mount connector having a connector connecting hole; and a receptacle connector having a relay connector. The surface mount connector includes: a first contact point provided on a first inner surface on one side in a height direction of the connector connecting hole; and a second contact point provided on a second inner surface on the other side in the height direction. The relay connector includes: a board piece insertable into the connector connecting hole; a first terminal provided on one surface of the board piece and connected to the first contact point; and a second terminal provided on the other surface of the board piece and connected to the second contact point. The first contact point is disposed closer to an opening side than the second contact point in a depth direction of the connector connecting hole. The first terminal has a first ground pin and a first signal pin, and a distal end of the first ground pin protrudes closer to a distal end side of the board piece than a distal end of the first signal pin.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a mounting board equipped with a receptacle connector and an electronic device equipped with the mounting board. [Background technology]

[0002] Electronic devices such as notebook PCs and tablet PCs have receptacle connectors as I / O connectors on the side of their flat housings. The receptacle connectors are often mounted on the edge of the main board (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-36484 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, there has been a demand for electronic devices such as those mentioned above that are easy to maintain, from the perspective of ESG (Environmental Social Governance). From this perspective, it is desirable for receptacle connectors to be easily replaceable. In particular, when receptacle connectors comply with the frequently used USB Type-C standard, there are many cases of malfunction, making it even more desirable for them to be easily replaceable.

[0005] Incidentally, if a receptacle connector is replaced while it is still charged and then installed in a system, the charged static electricity will be discharged, which could cause a large current to flow from the internal circuit to the electronic components, potentially resulting in electrostatic discharge (ESD) damage that could destroy the electronic components.

[0006] The present invention has been made in consideration of the above-mentioned problems of the conventional technology, and has an object to provide a mounting board and electronic device that can suppress electrostatic damage when attaching a receptacle connector. [Means for solving the problem]

[0007] A mounting board according to a first aspect of the present invention comprises a substrate having a mounting surface, and a receptacle connector having a connector connection hole that opens along the surface direction of the substrate and is mounted on the mounting surface of the substrate, a plug connection port to which a plug is connected, and an intermediate connector that is detachably connected to the connector connection hole, wherein the surface mount connector has a first contact provided on a first inner surface on one side in the height direction of the connector connection hole and a second contact provided on a second inner surface on the other side in the height direction, and the intermediate connector has a plate piece to be inserted into the connector connection hole, a first terminal provided on one surface of the plate piece and connected to the first contact, and a second terminal provided on the other surface of the plate piece and connected to the second contact, wherein the first contact is positioned closer to the opening than the second contact in the depth direction of the connector connection hole, and the first terminal has a first ground pin and a first signal pin, and the tip of the first ground pin protrudes toward the tip of the plate piece further than the tip of the first signal pin.

[0008] An electronic device according to a second aspect of the present invention is an electronic device comprising a housing and a mounting board supported by the housing, wherein the mounting board has a substrate with a mounting surface and a connector connection hole that opens along a surface direction of the substrate, and a surface-mount connector mounted on the mounting surface of the substrate, a plug connection port to which a plug is connected, and a receptacle connector having a relay connector that is detachably connected to the connector connection hole, and the surface-mount connector has a first contact provided on a first inner surface on one side in a height direction of the connector connection hole and a second contact on another side in the height direction. and a second contact provided on a second inner surface on the opposite side, and the relay connector has a plate piece inserted into the connector connection hole, a first terminal provided on one surface of the plate piece and connected to the first contact, and a second terminal provided on the other surface of the plate piece and connected to the second contact, the first contact being positioned offset toward the opening of the connector connection hole in the depth direction relative to the second contact, and the first terminal has a first ground pin and a first signal pin, and the tip of the first ground pin protrudes toward the tip of the plate piece further than the tip of the first signal pin. [Effects of the Invention]

[0009] According to the above aspect of the present invention, electrostatic damage can be suppressed when attaching a receptacle connector. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view of an electronic device according to an embodiment. [Figure 2] FIG. 2 is a perspective view of the receptacle connector and the surface-mount connector as viewed obliquely from above and outside. [Figure 3] FIG. 3 is a cross-sectional perspective view of the receptacle connector and the surface-mount connector as viewed obliquely from below and outside. [Figure 4] FIG. 4 is a schematic cross-sectional side view of the housing of the receptacle connector and its surrounding area. [Figure 5A] FIG. 5A is a schematic bottom view of the receptacle connector as seen from one side. [Figure 5B]FIG. 5B is a schematic plan view of the receptacle connector as seen from the other surface side. [Figure 6A] FIG. 6A is an explanatory diagram showing a state immediately before the relay connector is connected to the surface mount connector. [Figure 6B] FIG. 6B is an explanatory diagram showing a state immediately after the ground pin shown in FIG. 6A comes into contact with the first contact point. [Figure 7] FIG. 7 is a schematic side cross-sectional view showing the operation of connecting the receptacle connector to the surface-mount connector. [Figure 8] FIG. 8 is a diagram showing a state in which the ground pin of the first terminal shown in FIG. 7 is in contact with the first contact point of the surface-mount connector. [Figure 9] FIG. 9 is a view showing the receptacle connector shown in FIG. 8 tilted down. DETAILED DESCRIPTION OF THE INVENTION

[0011] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a mounting board and an electronic device according to the present invention will be described in detail with reference to the accompanying drawings.

[0012] FIG. 1 is a perspective view of an electronic device 10 according to one embodiment. The electronic device 10 is equipped with a mounting board 12 according to one embodiment. The mounting board 12 is incorporated inside a housing 14 of the electronic device 10. In the following, an embodiment of the present invention will be described using the electronic device 10, which is a notebook PC, as an example. The present invention can also be applied to electronic devices other than notebook PCs, such as desktop PCs or tablet PCs (tablet terminals).

[0013] The electronic device 10 includes a housing 14, a cover 16, and a hinge 18. The housing 14 and the cover 16 are connected by the hinge 18 to be rotatable relative to each other.

[0014] The housing 14 is provided with a keyboard device 20 and a touchpad 22. In addition to the mounting board 12, various electronic components such as a battery device, a memory device, a speaker, and an antenna can be mounted inside the housing 14. A display device 24, which occupies most of the area of ​​the front of the lid 16, is provided. The display device 24 can be configured with, for example, a liquid crystal display or an organic EL display. The lid 16 can also be equipped with a speaker, a camera, etc.

[0015] The mounting board 12 is supported inside the housing 14. The mounting board 12 can include a receptacle connector 26, a surface-mount connector 27, and a board 28. The mounting board 12 is a connector-board assembly in which the receptacle connector 26 is mounted on the board 28 via the surface-mount connector 27.

[0016] The board 28 is a main board (motherboard) in the electronic device 10. The board 28 is a printed circuit board (PCB). The board 28 extends from approximately the left and right ends inside the housing 14. A CPU 29 that controls the entire electronic device 10 is mounted on the board 28. The surface-mounted connector 27 is mounted on the board 28. The receptacle connector 26 is mounted on the board 28 via the surface-mounted connector 27. The board 28 on which the surface-mounted connector 27 is mounted may be a sub-board separate from the main board.

[0017] For ease of explanation, the side of the housing 14 around the receptacle connector 26 is referred to as the outside, and conversely, the interior of the housing 14 is referred to as the inside. Furthermore, with the substrate 28 as the reference, the mounting surface 28a on which the surface-mounted connector 27 is mounted is referred to as the top, and the opposite side is referred to as the bottom. This reference for up and down may be reversed from the up and down of the housing 14 shown in FIG. 1. In other words, when the up and down based on the substrate 28 is applied to the housing 14, the surface on which the keyboard device 20 is provided may be referred to as the bottom. With respect to the receptacle connector 26 and the surface-mounted connector 27, the direction perpendicular to the inward-outward direction and the up and down direction is referred to as the width direction. These directional designations are provided for ease of explanation, and the manner of use of the electronic device 10 is not limited to these.

[0018] Fig. 2 is a perspective view of receptacle connector 26 and surface mount connector 27, viewed obliquely from above and outside. Fig. 3 is a cross-sectional perspective view of receptacle connector 26 and surface mount connector 27, viewed obliquely from below and outside. Fig. 4 is a schematic cross-sectional side view of housing 14 at receptacle connector 26 and its surrounding area.

[0019] First, an example of the configuration of the receptacle connector 26 will be described.

[0020] As shown in FIGS. 2 to 4, receptacle connector 26 is a connector that complies with, for example, the USB Type-C standard. Receptacle connector 26 can be used for data transmission and charging. Receptacle connector 26 may also be one that complies with the HDMI (registered trademark) standard, etc. Receptacle connector 26 is mounted on substrate 28 via surface-mount connector 27. This allows receptacle connector 26 to be detachable from substrate 28 without being soldered thereto.

[0021] The receptacle connector 26 includes a plug holding cylinder 30, a relay connector 32, and a shell 34.

[0022] Receptacle connector 26 is connected to surface-mount connector 27, which has relay connector 32 mounted on mounting surface 28a. Plug holding cylinder 30 is then positioned to fit into notch 28c formed in substrate 28. This allows receptacle connector 26 to be mounted on mounting surface 28a of substrate 28 using a so-called mid-mount method.

[0023] The plug holding cylinder 30 is a cylindrical body made of metal. The plug holding cylinder 30 has a flattened elliptical shape with rounded corners. The plug holding cylinder 30 is located on the outermost side of the receptacle connector 26 and is positioned below the relay connector 32.

[0024] A through-hole (connector hole) 55a is formed in a vertical wall 55 forming a side surface of the housing 14 (see also FIG. 1). The plug holding cylinder 30 is disposed opposite the through-hole 55a. As a result, the plug connection port 30a of the plug holding cylinder 30 is exposed to the outside of the housing 14 through the through-hole 55a. A plug 36 can be inserted into and connected to the plug connection port 30a (see FIG. 4). The plug 36 is a plug connector attached to a cable or a device. The connection standard between the plug connection port 30a and the plug 36 complies with, for example, the USB Type-C standard. The plug 36 can be inserted into and connected to the plug connection port 30a regardless of the upside-down orientation.

[0025] A tongue-shaped plate 38 is provided inside the plug holding cylinder 30. Contacts 38a, 38b are provided on the lower and upper surfaces of the plate 38, respectively. Each of the contacts 38a, 38b comes into contact with a terminal of the plug 36. Each of the contacts 38a, 38b is composed of a plurality of metal pins arranged in parallel in the width direction of the plate 38. Each of the contacts 38a, 38b is connected to a respective terminal 41, 42 of the relay connector 32 using an electrode line. Each of the contacts 38a, 38b and the terminals 41, 42 has, for example, 24 metal pins.

[0026] The relay connector 32 is located at the innermost position of the receptacle connector 26. The relay connector 32 is located on the mounting surface 28a. The relay connector 32 may have a plug structure. The relay connector 32 can be detachably connected to the connector connection hole 46 of the surface-mount connector 27.

[0027] The relay connector 32 may have a tongue-shaped plate 40, a first terminal 41 provided on the lower surface (one surface 40a) of the plate 40, and a second terminal 42 provided on the upper surface (other surface 40b) of the plate 40. The terminals 41, 42 are composed of, for example, a plurality of metal pins arranged in parallel in the width direction of the plate 40. Each of the terminals 41, 42 may have, for example, 12 metal pins.

[0028] The shell 34 is a thin metal sheet part. The shell 34 covers the outer peripheral surface of the plug holding cylinder 30 excluding the plug connection port 30a, and the top and side surfaces of the relay connector 32. The shell 34 has a pair of fixing pieces 34a, 34a and a pair of fixing pieces 34b, 34b in the width direction. The fixing pieces 34a protrude in opposite directions from the side surface of the plug holding cylinder 30. The fixing pieces 34b protrude in opposite directions from the side surface of the relay connector 32. The fixing pieces 34a, 34b can be used to fix the receptacle connector 26 to the board 28. A screw insertion hole is formed in each of the fixing pieces 34a, 34b. The board 28 is formed with a screw insertion hole 28d at a position corresponding to each of the fixing pieces 34a, 34b (see FIG. 2). The fixing piece 34b may be omitted.

[0029] A stud 60 is formed upright on the plate portion 54 that forms the inner surface of the housing 14 (see FIG. 4). A female thread is formed on the top surface (upper end surface) of the stud 60. The top surface of the stud 60 abuts against the back surface 28b of the mounting surface 28a of the board 28. Screws that pass through the screw insertion holes of the fixing pieces 34a, 34b and the screw insertion hole 28d of the board 28 are screwed into the female thread of the stud 60. This fastens the shell 34 to the board 28, and fixes the receptacle connector 26 to the board 28. At the same time, the periphery of the receptacle connector 26 on the board 28 is also supported by the housing 14.

[0030] Next, an example of the configuration of the surface mount connector 27 will be described.

[0031] 2 to 4, surface mount connector 27 can be mounted by fixing connection surface 27a to mounting surface 28a of substrate 28 by soldering. Surface mount connector 27 can detachably connect relay connector 32 of receptacle connector 26. In this embodiment, relay connector 32 has a plug structure, and therefore surface mount connector 27 has a socket structure. Surface mount connector 27 and relay connector 32 can be configured as board-to-board connectors.

[0032] The surface mount connector 27 has a connector connection hole 46. The connector connection hole 46 extends along the surface direction of the substrate 28 and opens outward. The opening edge of the connector connection hole 46 has a first edge 48a and a second edge 49a. The first edge 48a is the edge on the mounting surface 28a side (lower side). The second edge 49a is the edge on the opposite side (upper side) from the mounting surface 28a side. The edges 48a, 49a extend in the width direction of the connector connection hole 46.

[0033] Contacts 51 and 52 are provided on the inner surface of the connector connection hole 46. The contacts 51 and 52 come into contact with the terminals 41 and 42 of the relay connector 32, respectively, and are electrically connected to each other.

[0034] The inner surface of the connector connection hole 46 has a first inner surface 48 and a second inner surface 49. The first inner surface 48 is a bottom surface on one side (lower side) in the height direction (up-down direction) of the connector connection hole 46. The first inner surface 48 extends inward from a first edge portion 48a in the depth direction (inside-out direction) of the connector connection hole 46. The second inner surface 49 is a ceiling surface on the other side (upper side) in the height direction of the connector connection hole 46. The second inner surface 49 extends inward from a second edge portion 49a in the depth direction of the connector connection hole 46.

[0035] The first contact 51 is provided on the first inner surface 48. The second contact 52 is provided on the second inner surface 49. Each of the contacts 51, 52 is connected to a signal line or a ground pattern formed on the substrate 28. Each of the contacts 51, 52 is composed of a plurality of metal pins arranged in parallel in the width direction of the connector connection hole 46. Each of the contacts 51, 52 has, for example, 12 metal pins. Each of the contacts 51, 52 comes into contact with the terminals 41, 42 of the relay connector 32, respectively, for electrical connection.

[0036] As shown in Figure 4, the second edge 49a is positioned further back than the first edge 48a in the depth direction of the connector connection hole 46. Conversely, the first edge 48a is positioned further toward the opening than the second edge 49a in the depth direction of the connector connection hole 46. Therefore, the first edge 48a, which forms the lower jaw of the connector connection hole 46, protrudes outward more than the second edge 49a, which forms the upper jaw. This causes the opening edge of the connector connection hole 46 to form an open space S1 that is open upward. The open space S1 is a space that allows the base portion of the relay connector 32 inserted into the connector connection hole 46 to pivot upward.

[0037] An inclined surface 49b is formed on the second edge 49a facing the open space S1. The inclined surface 49b gradually inclines (upward) away from the mounting surface 28a from the inner side (inside) of the connector connection hole 46 toward the opening side (outside). The inclination angle of the inclined surface 49b with respect to the surface direction of the board 28 is not limited, but can be set to, for example, approximately 20 to 40 degrees. In this embodiment, the inclination angle is approximately 30 degrees. The inclination angle of the inclined surface 49b can be designed taking into consideration the rising height of the standing wall 55 (described later) and the vertical height of the receptacle connector 26, etc. It is desirable that the inclination angle of the inclined surface 49b be set to an angle such that, for example, extension lines E1 and E2 in FIG. 8 do not intersect with the standing wall 55.

[0038] The connector connection hole 46 can have an expansion space S2 formed by recessing the portion of the first inner surface 48 deeper than the first contact 51 toward (below) the mounting surface 28a. The expansion space S2 is a space formed by expanding downward the inner portion of the connector connection hole 46. The expansion space S2 is a space that allows the tip portion of the relay connector 32 inserted into the connector connection hole 46 to swing downward.

[0039] As shown in FIG. 4, the housing 14 can include a housing member 56 having a plate portion 54 and a standing wall 55, and a cover material 58.

[0040] The housing member 56 can have a shallow bathtub shape by forming an upright wall 55 on the outer peripheral edge of the plate portion 54. The plate portion 54 forms the operation surface 14a of the housing 14. The operation surface 14a is the surface on which the keyboard device 20 and the touchpad 22 are exposed (see FIG. 1). Studs 60 can be formed to stand on the inner surface 54a of the plate portion 54. The studs 60 are arranged at positions corresponding to at least four fixing pieces 34a, 34b. As described above, the studs 60 can be used to fasten the receptacle connector 26 to the board 28. The board 28 is also appropriately supported by the inner surface 54a of the plate portion 54 in areas other than the periphery of the receptacle connector 26.

[0041] The standing wall 55 stands upward from the outer peripheral edge of the plate portion 54. A through hole 55a is formed in the standing wall 55, which forms the side surface of the housing 14 (see also FIG. 1). The through hole 55a faces the plug connection port 30a of the receptacle connector 26. The through hole 55a is an opening for connecting the plug 36 to the plug connection port 30a.

[0042] The cover material 58 is a plate-shaped member that closes the opening of the housing member 56. A tapered portion 58a can be provided on the edge of the cover material 58. The tapered portion 58a slopes inward from the tip (upper end 55b) of the standing wall 55. The receptacle connector 26 can be arranged so that the vertical step between the relay connector 32 and the plug holding cylinder 30 wraps around the inner surface of the tapered portion 58a.

[0043] As shown in FIG. 4, the receptacle connector 26 can be mounted on the board 28 via a surface-mount connector 27 and supported by the board 28 and the housing 14 via a stud 60. In this state, a predetermined gap C1 can be provided between the open end (outer end surface 30b) of the plug connection port 30a and the inner surface of the standing wall 55. The gap C1 is the opposing distance between the standing wall 55 and the plug connection port 30a. The gap C1 can be set to, for example, 0.2 mm. The tip of the plug holding cylinder 30 may be in contact with the inner surface of the standing wall 55 or inserted into the through-hole 55a. In this case, the gap C1 is zero or negative.

[0044] In this state, a predetermined gap C2 can be provided between the innermost surface 46a of the connector connection hole 46 and the front end surface 32a of the relay connector 32. The gap C2 can be set to, for example, 0.5 mm. In other words, the gap C2 can be set larger than the gap C1. The gap C2 forms a space that allows the relay connector 32 to move toward the innermost side of the connector connection hole 46 during the removal and installation operations of the receptacle connector 26, which will be described later.

[0045] Next, a specific example of the configuration of the relay connector 32 and the connection structure between the relay connector 32 and the surface mount connector 27 will be described.

[0046] FIG. 5A is a schematic bottom view of receptacle connector 26 as viewed from one surface 40a. FIG. 5B is a schematic plan view of receptacle connector 26 as viewed from the other surface 40b. FIG. 6A is an explanatory diagram showing the state immediately before relay connector 32 is connected to surface-mounted connector 27. FIG. 6B is an explanatory diagram showing the state immediately after ground pin 42a shown in FIG. 6A comes into contact with first contact 51. In FIGS. 6A and 6B, surface-mounted connector 27 is cut along a plane perpendicular to the vertical direction, and first contact 51 is shown in a plan view as viewed from above. Furthermore, components of relay connector 32 other than first terminal 41 are omitted, and first terminal 41 is shown in a plan view as viewed from above.

[0047] 5A, first terminal 41 of relay connector 32 has a plurality of metal pins arranged in parallel in the width direction of one surface 40a of plate piece 40. The metal pins constituting first terminal 41 may include two ground pins 41a, two high-speed transmission pins 41b, two high-speed reception pins 41c, two power supply pins 41d, a plug orientation detection pin 41e, an extension pin 41f, a low-speed transmission pin 41g, and a low-speed reception pin 41h.

[0048] The ground pin 41a is a ground pin connected to the ground pattern of the board 28 via the first contact 51. The high-speed transmission pin 41b, the high-speed reception pin 41c, the plug orientation detection pin 41e, the extension pin 41f, the low-speed transmission pin 41g, and the low-speed reception pin 41h are signal pins connected to the signal lines of the board 28 via the first contact 51. The power supply pin 41d is a power supply pin connected to the power supply line of the board 28 via the first contact 51.

[0049] The ground pins 41a are arranged at both ends of the plate piece 40 in the width direction. The two high-speed transmission pins 41b are lined up next to one of the ground pins 41a. The two high-speed reception pins 41c are lined up next to the other ground pin 41a. The power supply pins 41d are arranged next to the high-speed transmission pin 41b and the high-speed reception pin 41c. The plug orientation detection pin 41e is arranged next to the power supply pin 41d, which is next to the high-speed transmission pin 41b. The extension pin 41f is arranged next to the power supply pin 41d, which is next to the high-speed reception pin 41c. The low-speed transmission pin 41g is arranged next to the plug orientation detection pin 41e. The low-speed reception pin 41h is arranged next to the extension pin 41f.

[0050] 5B, second terminal 42 of relay connector 32 has a plurality of metal pins arranged in parallel in the width direction of other surface 40b of plate piece 40. The metal pins constituting second terminal 42 may include two ground pins 42a, two high-speed transmission pins 42b, two high-speed reception pins 42c, two power supply pins 42d, a plug orientation detection pin 42e, an extension pin 42f, a low-speed transmission pin 42g, and a low-speed reception pin 42h.

[0051] Ground pin 42a is a ground pin connected to the ground pattern of board 28 via second contacts 52. High-speed transmission pin 42b, high-speed reception pin 42c, plug orientation detection pin 42e, extension pin 42f, low-speed transmission pin 42g, and low-speed reception pin 42h are signal pins connected to signal lines of board 28 via second contacts 52. Power pin 42d is a power pin connected to a power line of board 28 via second contacts 52. The arrangement order of pins 42a to 42h of second terminal 42 is upside down compared to the arrangement order of pins 41a to 41h of first terminal 41. The number and arrangement order of metal pins of terminals 41, 42 are subject to change depending on the connection standard supported by receptacle connector 26, and the same applies to mating contacts 51, 52.

[0052] 5A, in the first terminal 41 of this embodiment, the tip of the ground pin (first ground pin) 41a protrudes further toward the tip side (inner side) of the plate piece 40 than the tips of the signal pins (first signal pins), such as the high-speed transmitting pin 41b and the high-speed receiving pin 41c. In the first terminal 41, the tip of the ground pin (first ground pin) 41a protrudes further toward the tip side (inner side) of the plate piece 40 than the tip of the power pin 41d. In other words, the tip of the ground pin 41a is shifted toward the tip side of the plate piece 40 than the tips of the other pins 41b to 41h.

[0053] 5B, in the second terminal 42 of this embodiment, the tip of the ground pin (second ground pin) 42a is aligned with the tip of the signal pins (second signal pins), such as the high-speed transmission pin 42b. In the second terminal 42, the tip of the ground pin (second ground pin) 42a is aligned with the tip of the power pin 42d. Note that the alignment of the tip of the ground pin 42a with the tips of the other pins 42b to 42h not only refers to the case where the positions of the tips are perfectly aligned in the inner and outer directions, but also includes cases where there is slight misalignment due to manufacturing tolerances, assembly errors, etc.

[0054] Such a relay connector 32 is connected to the surface-mount connector 27 as shown in Figures 6A and 6B. During this connection, the ground pins 41a at both ends of the first terminal 41 come into contact with the first contact point 51 before the other pins 41b to 42h. The second contact point 52 is positioned further back (inside) in the connector connection hole 46 than the first contact point 51 (see Figure 7, etc.). Therefore, at the time when the ground pin 41a of the first terminal 41 comes into contact with the first contact point 51, the second terminal 42 does not come into contact with the second contact point 52 (see Figure 8).

[0055] Next, the mounting operation of the receptacle connector 26 and its effects will be described.

[0056] As shown in FIGS. 7 to 9, the operation of attaching receptacle connector 26 to surface-mounted connector 27 is performed with cover material 58 removed from housing member 56.

[0057] First, as shown by the outline arrows in FIGS. 7 and 8, the receptacle connector 26 is moved diagonally downward inward, and the relay connector 32 is inserted into the connector connection hole 46.

[0058] At this time, the first contact 51 of the surface-mounted connector 27 is positioned closer to the opening (outside) than the second contact 52 in the depth direction (inside-outside direction) of the connector connection hole 46. The tip of the ground pin 41a of the first terminal 41 protrudes further toward the tip of the plate piece 40 than the tips of the high-speed transmission pin 41b, which is a signal pin. Therefore, when the relay connector 32 is connected to the surface-mounted connector 27, the ground pin 41a first comes into contact with the first contact 51. At this contact timing, the other pins 41b to 41h and the pins 42a to 42h of the second terminal 42 do not come into contact with the contacts 51, 52 (see FIGS. 6B and 8).

[0059] That is, when the relay connector 32 is connected to the surface-mount connector 27, the relay connector 32 may be charged with static electricity. Even in such a case, the mounting board 12 of this embodiment discharges the charged static electricity to ground when the ground pin 41a comes into contact with the first contact 51. This prevents a large current caused by static electricity from flowing to the signal lines of the board 28 via the high-speed transmission pin 41b, which is a signal pin. As a result, the electronic device 10 and the mounting board 12 can prevent electrostatic discharge (ESD) damage to other electronic components mounted on the board 28 and other electronic components mounted on the housing 14 and the lid 16.

[0060] 4 and 6B, the misalignment distance between the tip of ground pin 41a and the tip of high-speed transmission pin 41b, etc., is referred to as distance L. Distance L can be set appropriately taking into consideration the positional relationship between each of pins 41a to 41h of first terminal 41 and first contact point 51. For example, distance L can be set so that, at the moment when ground pin 41a contacts first contact point 51, other pins 41b to 41h do not contact first contact point 51, as shown in FIGS. 6B and 8. For example, distance L can be set so that other pins 41b to 41h can reliably contact first contact point 51 when connection of relay connector 32 to surface-mount connector 27 is completed, as shown in FIG.

[0061] Next, as shown by the outline arrow in Figure 9, the receptacle connector 26 is pushed down in the direction that moves the plug holding cylinder 30 downward. This causes the receptacle connector 26 to rotate counterclockwise in the figure, with the connection between the relay connector 32 and the connector connection hole 46 as the fulcrum. In other words, the receptacle connector 26 tilts down, with the connection with the connector connection hole 46 as the fulcrum.

[0062] Next, receptacle connector 26 is moved outward as shown by the outline arrow in Figure 4. Plug connection port 30a is positioned at the desired position facing through-hole 55a. Finally, fixing pieces 34a, 34b are fastened to substrate 28, and cover material 58 is attached to housing member 56. This completes the installation of receptacle connector 26 in electronic device 10.

[0063] The mounting board 12 of this embodiment is designed to facilitate smooth removal of the receptacle connector 26, which will be described later. Therefore, the mounting board 12 is configured so that the relay connector 32 can be attached to and detached from the connector connection hole 46 in a position inclined obliquely upward with respect to the depth direction of the connector connection hole 46. Specifically, in the electronic device 10 of this embodiment, the relay connector 32 can be inserted into the connector connection hole 46 along an extension line E1 of the inclined surface 49b (see FIG. 8). The extension line E2 in FIG. 8 is an imaginary line that is parallel to the extension line E1 and passes through the lower surface 26a of the receptacle connector 26. In the electronic device 10 of this embodiment, it is preferable that the extension line E1 of the inclined surface 49b does not intersect with the vertical wall 55. It is more preferable that the electronic device 10 be configured so that the extension line E2 does not intersect with the vertical wall 55 when the upper surface (other surface 40b) of the plate piece 40 of the relay connector 32 is in contact with or close to the inclined surface 49b. This allows electronic device 10 to be smoothly attached to and detached from surface-mounted connector 27 while preventing receptacle connector 26 from interfering with standing wall 55 (see FIGS. 7 to 9).

[0064] When the mounting board 12 is installed in the housing 14, it may have an installation structure in which there is no standing wall 55 near the surface-mount connector 27. The mounting board 12 may also be connected to the receptacle connector 26 when it is not installed in the housing 14. In these cases, the receptacle connector 26 does not need to be connected at an angle to the surface-mount connector 27. That is, the receptacle connector 26 can also be connected by moving it horizontally in a straight line along the depth direction of the connector connection hole 46. Even in such a case, the ground pin 41a of the mounting board 12 first comes into contact with the first contact 51, thereby preventing the electrostatic breakdown described above.

[0065] Next, the operation of removing the receptacle connector 26 and its effects will be described.

[0066] When receptacle connector 26 is installed in housing 14, it is mounted on substrate 28 via surface-mount connector 27 as shown in Figure 4. Fixing pieces 34a and 34b are fastened to substrate 28 with screws.

[0067] From this state, when removing and replacing, for example, a faulty receptacle connector 26, first remove cover material 58 from housing member 56 (see FIG. 9). This exposes the interior of housing 14, making receptacle connector 26 accessible. The screws fastening fixing pieces 34a, 34b to board 28 are then removed. This leaves receptacle connector 26 supported on board 28 only by the connection between relay connector 32 and surface-mount connector 27.

[0068] Next, receptacle connector 26 is pushed in the direction opposite to the outline arrow in Fig. 4. Receptacle connector 26 is pushed inward. In the mounting board 12 of this embodiment, when receptacle connector 26 is mounted as shown in Fig. 4, a gap C2 is provided between the inner surface 46a of connector connection hole 46 and the front surface 32a of relay connector 32. Therefore, receptacle connector 26 (relay connector 32) can be moved toward the inner side of connector connection hole 46 by the distance of gap C2.

[0069] 9, receptacle connector 26 is moved in the direction opposite to the outline arrow. Receptacle connector 26 is lifted upward, using the connection between relay connector 32 and connector connection hole 46 as a fulcrum. This causes the outermost end (outer end surface 30b) of receptacle connector 26 to rotate in an arc. In other words, receptacle connector 26 tilts up, using the connection with connector connection hole 46 as a fulcrum.

[0070] 8 and 7, receptacle connector 26 is moved in the direction opposite to the outline arrow. Receptacle connector 26 is pulled outward and diagonally upward from surface-mounted connector 27. This completes the removal operation of receptacle connector 26 from surface-mounted connector 27.

[0071] As described above, in the mounting board 12 and electronic device 10 of this embodiment, the receptacle connector 26 is not soldered to the board 28, allowing for easy replacement of the receptacle connector 26 and reducing replacement costs. Furthermore, the receptacle connector 26 can be tilted up and down relative to the surface-mount connector 27. This prevents the upright wall 55 from getting in the way when replacing the receptacle connector 26, making the replacement process even easier. Furthermore, the receptacle connector 26 has a horizontal mating structure that mates with the surface-mount connector 27 in a direction along the surface of the board 28. Therefore, the receptacle connector 26 is stacked on the surface-mount connector 27, preventing it from increasing the height of the mounting board 12. Therefore, the mounting board 12 also contributes to a thinner housing 14. Furthermore, the horizontal mating structure of the receptacle connector 26 allows for a reduction in the number of connection points between the board 28 and the receptacle connector 26, and also shortens the length of the electrode lines within the receptacle connector 26. Therefore, the mounting board 12 is also suitable for transmitting high-speed signals.

[0072] In the receptacle connector 26 of this embodiment, in the mounted state shown in FIG. 4 , only a small gap C1, e.g., 0.2 mm, is provided between the outer end surface 30b and the inner surface of the vertical wall 55. This allows the plug connection port 30a of the receptacle connector 26 to be close to the through-hole 55a, preventing the gap C1 from being noticeable when the through-hole 55a is viewed from outside the housing 14. Meanwhile, consider a case where the receptacle connector 26 is tilted up or down while maintaining this gap C1. In this case, the outer end surface 30b may come into contact with the vertical wall 55, making it impossible to tilt the receptacle connector 26 up or down to the desired angle. This is because the outer end surface 30b is located below the connection between the relay connector 32 and the connector connection hole 46, which serves as the fulcrum for rotation.

[0073] Therefore, electronic device 10 of this embodiment ensures gap C2 behind relay connector 32 in the normal connected state. This allows receptacle connector 26 to be moved inward and then tilted up. Also, receptacle connector 26 can be pushed inward and then tilted down. Therefore, mounting board 12 can narrow gap C1 while also preventing receptacle connector 26 from contacting upright wall 55 when tilted up or down.

[0074] In the mounting board 12 of this embodiment, the upper and lower edges 48a, 49a of the connector connection hole 46 can be misaligned inward and outward with respect to the tilting operation. This misalignment forms an open space S1 at the opening edge of the connector connection hole 46. Therefore, the mounting board 12 of this embodiment allows the receptacle connector 26 to rotate smoothly with the relay connector 32 inserted into the connector connection hole 46. Furthermore, the surface-mount connector 27 can have an inclined surface 49b on the second edge 49a above the open space S1. This prevents the rotated relay connector 32 from colliding with the second edge 49a of the surface-mount connector 27. As a result, the receptacle connector 26 can be smoothly rotated to a desired angle, for example, as shown in FIG. 8.

[0075] 8 and 9, the surface mount connector 27 can have a downward expansion space S2 behind the first contact 51 of the connector connection hole 46. This prevents the plate piece 40 of the relay connector 32 from interfering with the first inner surface 48 inside the connector connection hole 46, allowing the receptacle connector 26 to rotate more smoothly.

[0076] As described above, the mounting board 12 of this embodiment can prevent electrostatic breakdown when the relay connector 32 is connected to the surface-mount connector 27. This is because, in the first terminal 41, the tip of the ground pin 41a protrudes further toward the tip of the plate piece 40 than the tips of the high-speed transmission pin 41b and other signal pins (see distance L). This distance L enables the mounting board 12 to prevent the tips of the signal pins (high-speed transmission pin 41b and other pins) from becoming stubs when the receptacle connector 26 is mounted on the substrate 28 as shown in FIG.

[0077] Specifically, in the surface-mount connector 27 of this embodiment, the first contact 51 is offset toward the opening of the connector connection hole 46 relative to the second contact 52 in the depth direction. Consider a case in which the relay connector 32 has a terminal structure similar to that of a typical double-sided terminal connector. In this case, the tip positions of all pins 41a-41h of the first terminal 41 are aligned with the tip positions of pins 42a-42h of the second terminal 42 shown in FIG. 5B. Therefore, when the receptacle connector 26 is mounted on the board 28 as shown in FIG. 4, all pins 41a-41h are connected in a position protruding inward from the first contact 51. As a result, the high-speed transmitting pin 41b and the high-speed receiving pin 41c, which are signal pins, form a branched protruding portion in the signal transmission direction from the high-speed transmitting pin 41b and the high-speed receiving pin 41c to the connection point with the first contact 51. In this case, the protruding portion of the signal pin, such as the high-speed transmitting pin 41b, becomes a stub that adversely affects high-speed signal transmission. In this regard, the mounting board 12 of this embodiment has the above-mentioned distance L, which has the advantage that it can suppress the formation of such stubs in the signal pins and also improve the transmission performance of high-speed signals.

[0078] It should be noted that the present invention is not limited to the above-described embodiment, and can be freely modified without departing from the spirit of the present invention. [Explanation of symbols]

[0079] 10 Electronic equipment 12 Mounting board 14. Case 26 Receptacle Connector 27 Surface Mount Connectors 28 PCB 28a Mounting surface 30 Plug holding cylinder 30a plug connection port 32 Relay connector 41 1st terminal 42 2nd terminal 48 First inner surface 48a First edge 49 Second inner surface 49a 2nd edge 49b Slope 46 Connector connection hole 51 First Contact 52 Second Contact 54 Plate section 55 Standing Wall 55a through hole S1 open space S2 Extended Space

Claims

1. A mounting board, a substrate having a mounting surface; a surface mount connector having a connector connection hole opening along a surface direction of the substrate and mounted on a mounting surface of the substrate; a receptacle connector having a plug connection port to which a plug is connected and a relay connector detachably connected to the connector connection hole; Equipped with The surface mount connector comprises: a first contact provided on a first inner surface on one side in a height direction of the connector connection hole; a second contact point provided on a second inner surface on the other side in the height direction; and The relay connector is a plate piece to be inserted into the connector connection hole; a first terminal provided on one surface of the plate piece and connected to the first contact point; a second terminal provided on the other surface of the plate piece and connected to the second contact point; and the first contact is positioned closer to the opening than the second contact in a depth direction of the connector connection hole, The first terminal has a first ground pin and a first signal pin, and the tip of the first ground pin protrudes further toward the tip of the plate piece than the tip of the first signal pin. A mounting board characterized by:

2. The mounting board according to claim 1, The second terminal has a second ground pin and a second signal pin, and the tip of the second ground pin and the tip of the second signal pin are aligned. A mounting board characterized by:

3. 3. The mounting board according to claim 1, the first inner surface is a surface located on the mounting surface side in a height direction of the connector connection hole, The second inner surface is a surface located on the opposite side to the mounting surface in the height direction of the connector connection hole. A mounting board characterized by:

4. The mounting board according to claim 3, The opening edge of the connector connection hole is a first edge portion that is an edge portion of the first inner surface; a second edge portion that is an edge portion of the second inner surface; and The second edge portion is displaced toward the rear side relative to the first edge portion in the depth direction of the connector connection hole. A mounting board characterized by:

5. The mounting board according to claim 4, The second edge portion has an inclined surface that is gradually inclined in a direction away from the mounting surface from the deep side of the connector connection hole toward the opening side. A mounting board characterized by:

6. The mounting board according to claim 4, The connector connection hole has an expanded space formed by recessing a portion of the connector connection hole deeper than the first contact point toward the mounting surface in the height direction. A mounting board characterized by:

7. An electronic device comprising a housing and a mounting board supported by the housing, The mounting board is a substrate having a mounting surface; a surface mount connector having a connector connection hole opening along a surface direction of the substrate and mounted on a mounting surface of the substrate; a receptacle connector having a plug connection port to which a plug is connected and a relay connector detachably connected to the connector connection hole; Equipped with The surface mount connector comprises: a first contact provided on a first inner surface on one side in a height direction of the connector connection hole; a second contact point provided on a second inner surface on the other side in the height direction; and The relay connector is a plate piece to be inserted into the connector connection hole; a first terminal provided on one surface of the plate piece and connected to the first contact point; a second terminal provided on the other surface of the plate piece and connected to the second contact point; and the first contact is positioned closer to the opening than the second contact in a depth direction of the connector connection hole, The first terminal has a first ground pin and a first signal pin, and the tip of the first ground pin protrudes further toward the tip of the plate piece than the tip of the first signal pin. An electronic device characterized by:

8. 8. The electronic device according to claim 7, The second terminal has a second ground pin and a second signal pin, and the tip of the second ground pin and the tip of the second signal pin are aligned. An electronic device characterized by:

9. 9. The electronic device according to claim 7, the first inner surface is a surface located on the mounting surface side in a height direction of the connector connection hole, The second inner surface is a surface located on the opposite side to the mounting surface in the height direction of the connector connection hole. An electronic device characterized by:

10. 10. The electronic device according to claim 9, The housing includes: a plate portion supporting a surface of the substrate opposite to a mounting surface; a through hole to which the plug connection port is opposed, and a standing wall standing upright from an edge of the plate portion; and The opening edge of the connector connection hole is a first edge portion that is an edge portion of the first inner surface; a second edge portion that is an edge portion of the second inner surface; and The second edge portion is displaced toward the rear side relative to the first edge portion in the depth direction of the connector connection hole. An electronic device characterized by:

11. The electronic device according to claim 10, the second edge portion has an inclined surface that is gradually inclined in a direction away from the mounting surface from the deep side of the connector connection hole toward the opening side, The extension of the inclined surface does not intersect with the vertical wall An electronic device characterized by:

12. The electronic device according to claim 10, The connector connection hole has an expanded space formed by recessing a portion of the first inner surface deeper than the first contact point toward the mounting surface in the height direction. An electronic device characterized by:

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