Connector and connection structure between circuit board and connector

Abstract

PURPOSE: To provide the present invention.CONSTITUTION: A connector C1 comprises: a body 100; a terminal 200; and a shell 300. The terminal 200 includes: a main body part 210 partially held by at least the body 100; a tip end part 220 extended from a first end 210a of the main body part 210 to a Y direction; and a mounting part 230 that is extended from a third end 210c of the main body part 210 to a Y' direction, and positioned at the outside of the body 100. The shell 300 includes: a shell main body 310; a first leg part 321; and a second leg part 322. The body 100 is housed and held in the shell main body 310, and the main body part 210 of the terminal 200 and the tip end part 220 are housed. The first leg part 321 is a long-length projected line in a Y-Y' direction extended to a Z' direction from the shell main body 310, and is arranged to a X direction side to the terminal 200. The second leg part 322 is the long-length projected line in the Y-Y' direction extended to the Z' direction from the shell main body 310, and is arranged to a X' direction to the terminal 200.SELECTED DRAWING: Figure 1C

Description

[Technical Field]

[0001] The present invention relates to a connector and a connection structure between a circuit board and the connector. [Background technology]

[0002] Patent Document 1 below describes a conventional coaxial connector. This coaxial connector includes conductive terminals (center contacts), an insulating body (insulator) that holds the terminals, and a conductive shell (outer conductor) that holds the body. The shell has a base that is generally U-shaped in plan view and has a pair of substantially cylindrical front legs (mounting legs) and a pair of rear legs (mounting legs), and a cylindrical external contact that extends in the front-rear direction and into which a mating connector is inserted and removed. The base and the external contact may be integrally configured in the front-rear direction, or may be separate and joined to each other in the front-rear direction. The pair of front legs extend downward from the bottom surface of the base and are located diagonally rearward on both the left and right sides of the other end of the terminal. The pair of rear legs extend downward from the bottom surface of the base and are located rearward of the pair of front legs. When the base is mounted on a circuit board, the legs are inserted into through-hole electrodes in the board and connected to the ground layer of the board via the through-hole electrodes. This electrically connects the shell to the ground layer of the board. The terminals have one end exposed within the outer contact of the shell for connection with terminals of a mating coaxial connector, and the other end exposed from the shell, and when the base is mounted on a substrate, the other end of the terminal is connected to a surface electrode of the substrate. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-216124 Summary of the Invention [Problem to be solved by the invention]

[0004] When transmitting high-speed signals using a conventional connector mounted on a circuit board, In conventional connectors, there is a possibility that high-speed signals are reflected at the portions where the shape of the terminal changes. This reflection of high-speed signals generates noise, which is radiated from the terminal to the shell. The front and rear legs of conventional connectors are both located diagonally rearward of the other end of the terminal, and are therefore far from the terminal. In addition, the front and rear legs of the shell are each approximately cylindrical, and the cross-sectional areas of their respective front-to-back and up-to-down directions are small. These and other factors have led to a decrease in the ground strength of conventional connectors. Therefore, when transmitting high-speed signals, noise radiated from the terminal to the shell is radiated through the front and rear legs of the shell. rear leg Before the electrical current flows through the connector to the ground layer of the board, the edge-shaped portion of the shell acts as an antenna, which can re-radiate the electrical current from the edge-shaped portion to the outside of the conventional connector. Therefore, the EMI (Electromagnetic Interference) characteristics of the conventional connector are poor.

[0005] The present invention provides a connector and a connection structure between a circuit board and the connector that can improve EMI characteristics. [Means for solving the problem]

[0006] A connector according to one aspect of the present invention includes an insulating body, at least one terminal, and a conductive shell. The at least one terminal has a main body portion at least partially held by the body, a tip portion, and a mounting portion. The main body portion has a first end on one side in a first direction, a second end on the other side in the first direction, and a third end on one side in a second direction substantially perpendicular to the first direction. The tip portion extends from the first end of the main body portion in one direction in the first direction. The mounting portion may (1) extend from the third end of the main body portion in the other direction in the first direction and be located outside the body, or (2) extend from the third end of the main body portion in one direction in the second direction and be located outside the body. The shell has a shell main body, a first leg portion, and a second leg portion. The shell main body is a substantially cylindrical body extending in the first direction, and the body is housed and held therein, and the main body portion and tip portion of at least one terminal are housed therein. The first direction is the axial direction of the shell main body. The first leg is the shell body from The second leg portion is a protrusion elongated in the first direction and extending in one direction of the second direction, and is disposed on one side of the third direction relative to at least one terminal. The third direction is a direction substantially perpendicular to the first direction and the second direction. The second leg portion is a protrusion extending in one direction of the second direction relative to the shell body. from The protrusion is elongated in the first direction and extends in one direction in the second direction, and is disposed on the other side in the third direction relative to at least one terminal.

[0007] A connector of this type has improved EMI characteristics. The reasons for this are as follows: The first and second legs of the shell are elongated protrusions in the first direction and are located on both sides of at least one terminal in the third direction. Therefore, the first and second legs of the shell are closer to at least one terminal than a pair of front legs and a pair of rear legs located diagonally rearward of the terminal mounting portion of a conventional connector. Furthermore, because the first and second legs of the shell are elongated protrusions in the first direction, the cross-sectional areas of the first and second legs are larger. Since the first and second legs are grounded during use, even if a signal transmitted to at least one terminal is reflected from at least one terminal and noise is generated by this signal reflection and radiated to the shell, the noise is more likely to flow to ground from the first and / or second legs of the shell. This suppresses re-radiation of noise from the edge-shaped portion of the shell body.

[0008] The first leg may have a first end on one side in the first direction and a second end on the other side in the first direction. The second leg may have a first end on one side in the first direction and a second end on the other side in the first direction.

[0009] The tip portion of at least one terminal may have a first end on one side in the first direction and a second end on the other side in the first direction. The first end of the first leg and the first end of the second leg may be located on one side in the first direction relative to the first end of the tip portion of the at least one terminal, and the second end of the first leg and the second end of the second leg may be located on the other side in the first direction relative to the second end of the tip portion of the at least one terminal.

[0010] The mounting portion of at least one terminal may have a first end on one side in the first direction and a second end on the other side in the first direction. The mounting portion of at least one terminal may further have a third end on one side in the second direction. The mounting portion of at least one terminal may further have a fourth end on the other side in the second direction.

[0011] The second end of the first leg and the second end of the second leg may be located on the other side in the first direction relative to the second end of the mounting portion of at least one terminal, or may be located at approximately the same position in the first direction as the second end of the mounting portion of at least one terminal.

[0012] The first leg and the second leg are connected to a first imaginary line or The first leg portion and the second leg portion may be disposed at positions that are substantially symmetrical in the third direction with respect to the second imaginary line as an axis of symmetry. or The shape may be substantially symmetrical in the third direction with the second virtual line as the axis of symmetry.

[0013] The first imaginary line may extend in the first direction through an approximate center of an intermediate portion of one of the at least one terminals when there is one terminal, and the second imaginary line may extend in the first direction through an approximate midpoint of a straight-line distance in the third direction from an end on one side in the third direction of an intermediate portion of a terminal that is located furthest on one side in the third direction to an end on the other side in the third direction of an intermediate portion of a terminal that is located furthest on the other side in the third direction when there is a plurality of at least one terminals.

[0014] The first leg may further have a third end on one side in the second direction. The second leg may further have a third end on one side in the second direction. When the mounting portion of at least one terminal has the configuration (1) above, the third end of the first leg and the third end of the second leg are arranged to be spaced apart in the second direction from the third end of the mounting portion of at least one terminal. One side When the mounting portion of at least one terminal has the configuration (2) above, the third end of the first leg portion and the third end of the second leg portion may be positioned in the second direction relative to the third end of the mounting portion of at least one terminal. One side Alternatively, the second end may be located at substantially the same position in the second direction as the third end of the mounting portion of at least one terminal.

[0015] The shell may further have a third leg and a fourth leg. The third leg may be a protrusion elongated in the first direction extending from a bottom surface of the shell body in one direction of the second direction, disposed on the other side of the first leg in the first direction and on one side of the mounting portion for at least one terminal in the third direction. The fourth leg may be a protrusion elongated in the first direction extending from a bottom surface of the shell body in one direction of the second direction, disposed on the other side of the second leg in the first direction and on the other side of the mounting portion for at least one terminal in the third direction.

[0016] The third leg may have a first end on one side in the first direction, a second end on the other side in the first direction, and a third end on one side in the second direction, and the fourth leg may have a first end on one side in the first direction, a second end on the other side in the first direction, and a third end on one side in the second direction.

[0017] The second end of the third leg and the second end of the fourth leg may be located at approximately the same position in the first direction as the second end of the mounting portion of at least one terminal, or may be located on the other side in the first direction relative to the second end of the mounting portion of at least one terminal.

[0018] The first end of the third leg and the first end of the fourth leg may be located at approximately the same position in the first direction as the first end of the mounting portion of at least one terminal, or may be located on one side in the first direction relative to the first end of the mounting portion of at least one terminal.

[0019] The third leg may further have a third end on one side in the second direction, and the fourth leg may further have a third end on one side in the second direction. The third ends of the third leg and the fourth leg may be located at approximately the same position in the second direction as a third end of the mounting portion of at least one terminal.

[0020] The third leg may further have a fourth end on one side in the second direction, and the fourth leg may further have a fourth end on one side in the second direction. The fourth ends of the third leg and the fourth leg may be located at approximately the same position in the second direction as the fourth end of the mounting portion of the at least one terminal, or may be located on the other side in the second direction with respect to the fourth end of the mounting portion of the at least one terminal.

[0021] The third leg and the fourth leg are aligned along the first imaginary line. or The third leg portion and the fourth leg portion may be arranged at positions that are approximately symmetrical in the third direction with the second virtual line as an axis of symmetry. The third leg portion and the fourth leg portion may have a shape that is approximately symmetrical in the third direction with the first virtual line and / or the second virtual line as an axis of symmetry.

[0022] The shell may further have a first wall portion and a second wall portion. The first wall portion may be a portion extending from the shell body to the other side in the first direction or a part of a wall of the shell body on one side in the third direction, and may be located on one side in the third direction with respect to the mounting portion for the at least one terminal. The second wall portion may be a portion extending from the shell body to the other side in the first direction or a part of a wall of the shell body on the other side in the third direction, and may be located on the other side in the third direction with respect to the mounting portion for the at least one terminal.

[0023] The first wall may have a first end on one side in the first direction and a second end on the other side in the first direction. The second wall may have a first end on one side in the first direction and a second end on the other side in the first direction.

[0024] The second end of the first wall portion and the second end of the second wall portion may be located at approximately the same position in the first direction as the second end of the mounting portion of at least one terminal, or may be located on the other side in the first direction relative to the second end of the mounting portion of at least one terminal.

[0025] The first wall portion is 3rd end The second wall portion may further have a third end on one side in the second direction and a fourth end on the other side in the second direction.

[0026] The third end of the first wall portion and the third end of the second wall portion may be located at approximately the same position in the second direction as the third end of the mounting portion of at least one terminal. The fourth end of the first wall portion and the fourth end of the second wall portion may be located at approximately the same position in the second direction as the fourth end of the mounting portion of at least one terminal, or may be located at a position slightly different from the fourth end of the mounting portion of at least one terminal. 2nd direction It may be located on the other side of the

[0027] The shell may further include at least one protrusion. The at least one protrusion is attached to the shell body. from The at least one protrusion may extend in one of the second directions. The at least one protrusion may have a tip on one side of the second direction.

[0028] A connector according to one aspect of the present invention may include a shielding cover. The shielding cover may have a conductive cover portion and at least two engagement arms. The shell may have at least two engagement portions. The at least two engagement arms may be engaged with the at least two engagement portions, and the cover portion may close the other side of the internal space of the shell in the first direction.

[0029] A connection structure between a circuit board and a connector according to one aspect of the present invention includes a circuit board and any of the connectors described above.

[0030] The circuit board may include a substrate body, at least one ground layer, at least one signal electrode having electrical conductivity, a first ground electrode having electrical conductivity, and a second ground electrode having electrical conductivity. The substrate body may have a surface on one side in the second direction and a back surface on the other side in the second direction.

[0031] The at least one ground layer may include at least one of a first ground layer having conductivity provided on the front surface of the board body, a second ground layer having conductivity provided on the back surface of the board body, and at least one third ground layer having conductivity provided inside the board body. When the at least one ground layer is two or more layers, the two or more ground layers may be connected by at least one bypass electrode.

[0032] The at least one signal electrode may be a surface electrode provided on the surface of the substrate body, or may be a through-hole electrode that penetrates the substrate body in the second direction.

[0033] The first ground electrode and the second ground electrode are through-hole electrodes elongated in a first direction, penetrate the substrate body in a second direction, are spaced apart from each other in a third direction, and are connected to at least one ground layer. Electrically It may be connected to at least one ground layer and have the same potential.

[0034] When at least one signal electrode is a surface electrode, the mounting portion of at least one terminal of the connector may have the configuration (1) above, be placed on at least one signal electrode, and be electrically connected to the at least one signal electrode.

[0035] When at least one signal electrode is a through-hole electrode, the mounting portion of at least one terminal of the connector may have the configuration (2) above, be inserted into at least one signal electrode, and be electrically connected to at least one signal electrode.

[0036] A first leg of the connector may be inserted into and electrically connected to the first ground electrode, and a second leg of the connector may be inserted into and electrically connected to the second ground electrode.

[0037] The circuit board may further include a third ground electrode and a fourth ground electrode.

[0038] The third ground electrode and the fourth ground electrode may be surface electrodes provided on the surface of the substrate body, electrically connected to at least one ground layer, and at the same potential as at least one ground layer.

[0039] The third ground electrode may be disposed on the other side in the first direction with a gap therebetween relative to the first ground electrode, and the fourth ground electrode may be disposed on the other side in the first direction with a gap therebetween relative to the second ground electrode.

[0040] The third ground electrode may be disposed on one side in the third direction with respect to at least one signal electrode, and the fourth ground electrode may be disposed on the other side in the third direction with respect to at least one signal electrode.

[0041] A third leg of the connector may be mounted on and electrically connected to the third ground electrode, and a fourth leg of the connector may be mounted on and electrically connected to the fourth ground electrode.

[0042] The connector shell may further have at least one protrusion on a bottom surface of the shell body on one side in the second direction, and a tip of the at least one protrusion may abut against the circuit board, and a gap may be formed between the bottom surface of the shell body of the connector shell and the circuit board.

[0043] At least one signal line is provided on at least one of the front surface of the substrate body, the rear surface of the substrate body, and the interior of the substrate body. and It may be electrically connected to at least one signal electrode.

[0044] The at least one signal line and the at least one ground layer may form a microstrip line or a coplanar line. When the at least one ground layer has two or more layers, the at least one signal line and the two or more ground layers may form a microstrip line or a coplanar line. but , may constitute a strip line.

[0045] At least one ground layer may extend in one of the first directions beyond the first ground electrode and the second ground electrode.

[0046] The substrate body may have a first end on one side in the first direction. The first ground electrode and the second ground electrode may be 1st end The first end of the first ground electrode and the second ground electrode may have a First end The linear distance in the first direction from each of them to the first end of the substrate body can be approximately 1 mm, but is not limited to this.

[0047] The circuit board may further include an insulating resist provided on the surface of the board body. 2nd direction a first opening that exposes at least a portion of the other end surface of the second ground electrode; 2nd direction The first opening and the second opening may be separated from each other.

[0048] When a third ground electrode and a fourth ground electrode are provided, the resist is 2nd direction a third opening that exposes at least a portion of the other end surface of the fourth ground electrode; 2nd direction The first opening, the second opening, the third opening, and the fourth opening may be separated from each other. [Brief explanation of the drawings]

[0049] [Figure 1A]1 is a rear, top, and right side perspective view of a connector according to a first embodiment of the present invention. [Figure 1B] 1 is a perspective view of the connector of the first embodiment shown from the front, bottom, and left side. FIG. [Figure 1C] 1C is a cross-sectional view of the connector of the first embodiment taken along line 1C-1C in FIG. 1B. [Figure 1D] 1 is an exploded perspective view of the connector of the first embodiment shown from the front, top, and right side. FIG. [Figure 1E] 1 is an exploded perspective view of the connector of the first embodiment, as viewed from the rear, bottom, and left side. FIG. [Figure 2A] FIG. 10 is a rear, top, and right side perspective view of a connector according to a second embodiment of the present invention. [Figure 2B] 2B is a cross-sectional view of the connector of the second embodiment taken along line 2B-2B in FIG. 2A. [Figure 2C] FIG. 10 is a perspective view of a first design variation of the connector of the second embodiment, as viewed from the back, top, and right side. [Figure 3A] 10A and 10B are perspective views of a connector according to a third embodiment of the present invention, as viewed from the front, bottom, and left side. [Figure 3B] 3B is a cross-sectional view of the connector according to the third embodiment taken along line 3B-3B in FIG. 3A. [Figure 4A] FIG. 10 is a rear, top, and right side perspective view of a connector according to a fourth embodiment of the present invention. [Figure 4B] 4B is a cross-sectional view of the connector according to the fourth embodiment taken along line 4B-4B in FIG. 4A. [Figure 4C] FIG. 10 is a perspective view of a first design variation of the connector of the fourth embodiment, as viewed from the back, top, and right side. [Figure 5A] FIG. 10 is a rear, top, and right side perspective view of a connector according to a fifth embodiment of the present invention. [Figure 5B] 10 is a perspective view of the connector of the fifth embodiment shown from the front, bottom and left side. FIG. [Figure 5C] 5C is a cross-sectional view of the connector of the fifth embodiment taken along line 5C-5C in FIG. 5B. [Figure 5D] FIG. 10 is an exploded perspective view of the connector of the fifth embodiment, shown from the front, top, and right side. [Figure 5E] FIG. 10 is an exploded perspective view of the connector of the fifth embodiment, as viewed from the rear, bottom, and left side. [Figure 6A] 10 is a rear, top, and right side perspective view of a connector according to a sixth embodiment of the present invention. FIG. [Figure 6B] 6B is a cross-sectional view of the connector of Example 6 taken along line 6B-6B in FIG. 6A. [Figure 6C] FIG. 20 is a perspective view of a first design variation of the connector of the sixth embodiment, as viewed from the back, top, and right side. [Figure 7A] 1A and 1B are perspective views of a connection structure between a circuit board and a connector according to a first embodiment of the present invention, as viewed from the front, top, and right side. [Figure 7B] 7B is a cross-sectional view of the connection structure of the first embodiment taken along line 7B-7B in FIG. 7A. [Figure 7C] 7C is a cross-sectional view of the connection structure of Example 1 taken along line 7C-7C in FIG. 7A. [Figure 7D] 7D-7D cross-sectional view of the connection structure of Example 1 taken along line 7D-7D in FIG. 7B. [Figure 8A] 1A and 1B are perspective views of the circuit board of the connection structure of Example 1, as viewed from the front, top, and right side. [Figure 8B] 1A and 1B are perspective views of the circuit board of the connection structure of Example 1, as viewed from the back, bottom, and right side. [Figure 9A] 7B is a cross-sectional view showing the connection structure of the first embodiment and a mating connector connected to the connector of the connection structure. FIG. [Figure 9B] 7B is a cross-sectional view corresponding to FIG. 7B of a connection structure between a substrate and a connector according to Comparative Example 1 and a mating connector connected to the connector of the connection structure. [Figure 10A] 10 is a diagram showing the results of an electric field strength analysis (simulation results) of the connection structure of Example 1. FIG. [Figure 10B] FIG. 10 is a diagram showing the results of an electric field strength analysis (simulation results) of the connection structure of Comparative Example 1. [Figure 11A] 7B is a cross-sectional view corresponding to FIG. 7B, showing a connection structure between a circuit board and a connector according to a second embodiment of the present invention. [Figure 11B]11B is a cross-sectional view of the connection structure according to Example 2 taken along line 11B-11B in FIG. 11A. [Figure 12A] 7B is a cross-sectional view showing a connection structure between a circuit board and a connector according to a third embodiment of the present invention, the cross-sectional view corresponding to FIG. 7B. [Figure 12B] 12B is a cross-sectional view of the connection structure according to Example 3 taken along line 12B-12B in FIG. 12A. [Figure 13A] 12B is a cross-sectional view corresponding to FIG. 12A, showing a connection structure between a circuit board and a connector according to a fourth embodiment of the present invention. [Figure 13B] 13B is a cross-sectional view of the connection structure according to Example 4 taken along line 13B-13B in FIG. 13A. [Figure 14A] 10A and 10B are front, top, and right side perspective views of a connection structure between a circuit board and a connector according to a fifth embodiment of the present invention. [Figure 14B] 14B-14B cross-sectional view of the connection structure of Example 5 in FIG. 14A. FIG. [Figure 14C] 14C-14C cross-sectional view of the connection structure of Example 5 in FIG. 14A. FIG. [Figure 14D] FIG. 14D is a cross-sectional view of the connection structure of Example 5 taken along line 14D-14D in FIG. 14B. [Figure 15A] 10A and 10B are perspective views of the circuit board of the connection structure of Example 5, shown from the front, top, and right side. [Figure 15B] 10A and 10B are perspective views of the circuit board of the connection structure of Example 5, as viewed from the back, bottom, and right side. [Figure 16A] 14B is a cross-sectional view showing the connection structure of the fifth embodiment and a mating connector connected to the connector of the connection structure. FIG. [Figure 16B] 14B is a cross-sectional view corresponding to FIG. 14B of a connection structure between a substrate and a connector according to Comparative Example 2 and a mating connector connected to the connector of the connection structure. [Figure 17A] FIG. 10 is a diagram showing the results of an electric field strength analysis (simulation results) of the connection structure of Example 5. [Figure 17B] 10 is a diagram showing the results of an electric field strength analysis (simulation results) of the connection structure of Comparative Example 2. FIG. [Figure 18A]14B is a cross-sectional view showing a connection structure between a circuit board and a connector according to a sixth embodiment of the present invention. FIG. [Figure 18B] 18B is a cross-sectional view of the connection structure according to Example 6 taken along line 18B-18B in FIG. 18A. DETAILED DESCRIPTION OF THE INVENTION

[0050] Below, we will explain connectors according to Examples 1 to 6 of the present invention and their respective design variations, and then we will explain connection structures between circuit boards and connectors according to Examples 1 to 6 of the present invention and their respective design variations. Please note that the components of the examples and design variations described below can be combined with each other as long as they are not inconsistent. Also, please note that the materials, shapes, dimensions, numbers, and arrangements of the components in each aspect of the examples and design variations described below are merely examples, and that any design variation is possible as long as the same functions can be achieved.

[0051] "Connector C1 according to multiple embodiments including embodiment 1 and its design variations" A connector C1 according to a first embodiment of the present invention and several other embodiments including design variations thereof will be described below with reference to Figures 1A to 1E. Figures 1A to 1E show the connector C1 of the first embodiment.

[0052] 1A to 1C show the Y-Y' direction (first direction) and the Z-Z' direction (second direction). The Y-Y' direction includes the Y direction (one of the first directions) and the Y' direction (the other of the first directions). The Z-Z' direction is a direction substantially perpendicular to the Y-Y' direction and includes the Z' direction (one of the second directions) and the Z direction (the other of the second directions). 1A to 1B and 1C to 1E show the X-X' direction (third direction). The X-X' direction is a direction substantially perpendicular to the Y-Y' direction and the Z-Z' direction and includes the X direction (one of the third directions) and the X' direction (the other of the third directions).

[0053] The connector C1 includes an insulating body 100 and at least one conductive terminal 200.

[0054] The body 100 is made of, for example, insulating resin and partially holds at least one terminal 200. The body 100 can have, for example, (A) a configuration having a base 110 (not shown), or (B) a configuration having a base 110 and a protrusion 120 extending from the base 110 in the Y direction (see FIGS. 1A to 1E). The dimension of the protrusion 120 in the Z-Z' direction can be smaller than the dimension of the base 110 in the Z-Z' direction and / or the dimension of the protrusion 120 in the X-X' direction can be smaller than the dimension of the base 110 in the X-X' direction.

[0055] The at least one terminal 200 may be one (see FIGS. 1A to 1E) or multiple (not shown). Hereinafter, for convenience of explanation, the at least one terminal 200 will also be referred to as "one or each terminal 200." Of the "one or each terminal 200," one terminal 200 corresponds to one terminal 200 when there is one terminal 200, and each terminal 200 corresponds to each terminal 200 when there are multiple terminals 200. The one or each terminal 200 is made of a conductive material such as a metal plate, and has a main body portion 210, a tip portion 220, and a mounting portion 230.

[0056] The main body portion 210 is a portion between the tip portion 220 and the mounting portion 230 of one or each terminal 200. For example, the main body portion 210 is configured as a rod, a flat plate, a substantially cylindrical plate, or the like that is substantially L-shaped when viewed cross-sectionally in the Y-Y' direction and the Z-Z' direction. The main body portion 210 has a first portion extending in the Y-Y' direction and a second portion extending from the Y'-direction end of the first portion in the Z' direction or in an oblique direction including components in the Z' direction and the Y' direction. The main body portion 210 has a first end 210a on the Y-direction side, a second end 210b on the Y'-direction side, and a third end 210c on the Z'-direction side. The first end 210a is the Y-direction end of the first portion of the main body portion 210, the second end 210b is the Y'-direction end of the second portion of the main body portion 210, and the third end 210c is The main body 210This is the end of the second part on the Z' direction side. One or more protrusions 211 may be provided on the first part of the main body part 210, but they may not be provided.

[0057] The main body portion 210 is at least partially held by the body 100. For example, a part or all of the main body portion 210 may be inserted into a holding hole (not shown) provided in the base portion 110 of the body 100 described above (A) or into a holding hole 111 provided in the base portion 110 and the protrusion 120 of the body 100 described above (B) and held by press-fitting or the like, or a part or all of the main body portion 210 may be embedded and held in the base portion 110 of the body 100 described above (A) or in the base portion 110 and the protrusion 120 of the body 100 described above (B) by insert molding or the like.

[0058] The tip portion 220 is configured as a rod, a flat plate, a tube, a pair of beams, or the like extending in the Y direction from the first end 210a of the main body portion 210. The tip portion 220 has a first end 220a on the Y direction side and a second end 220b on the Y' direction side. The dimension of the tip portion 220 in the Z-Z' direction is approximately the same as or smaller than the dimension of the first part of the main body portion 210 in the Z-Z' direction. The tip portion 220 and the body 100 can have any of the following configurations.

[0059] The tip portion 220 protrudes in the Y direction from the protrusion 120 of the body 100 in (A) above (see FIG. 1C). Alternatively, the tip portion 220 protrudes in the Y direction from the base portion 110 of the body 100 in (A) above (not shown). Alternatively, the tip portion 220 is housed in a housing hole that opens in the Y direction of the protrusion 120 of the body 100 in (A) above (not shown).

[0060] The mounting portion 230 is configured as a rod or a flat plate extending in the Y' direction from the third end 210c of the main body portion 210. A portion of the mounting portion 230 may be housed in the base portion 110 of the body 100 and the remaining portion may be located outside the body 100 (see FIG. 1C), or the entire mounting portion 230 may be located outside the body 100 (not shown). The mounting portion 230 has a first end 230a on the Y direction side, a second end 230b on the Y' direction side, a third end 230c on the Z' direction side, and a fourth end 230d on the Z direction side.

[0061] When there are a plurality of terminals 200, the main body portions 210 of the plurality of terminals 200 are held in the body 100 as described above and are spaced apart in the X-X' direction. The tip portions 220 of the plurality of terminals 200 protrude from the body 100 or are housed within the body 100 as described above and are spaced apart in the X-X' direction. The mounting portions 230 of the plurality of terminals 200 are spaced apart in the X-X' direction. The plurality of terminals 200 arranged in this manner include a terminal 200 located closest to the X-direction side and a terminal 200 located closest to the X'-direction side.

[0062] The connector C1 further includes a conductive shell 300. The shell 300 has a shell body 310. For example, the shell body 310 may be made of cast metal, or may be made of metal created using a 3D printer. The shell body 310 may also be made of a resin-molded shell body with metal plated or vapor-deposited on its outer and / or inner surfaces. In either case, the shell body 310 is a roughly tubular (e.g., cylindrical or polygonal) body extending in the Y-Y' direction and has an internal space 311. The internal space 311 is a through-hole that penetrates the shell 300 in the Y-Y' direction.

[0063] The internal space 311 of the shell body 310 accommodates and holds the body 100, and also accommodates the main body portion 210 and tip portion 220 of one or more terminals 200. A portion of the mounting portion 230 of one or more terminals 200 may be accommodated in the internal space 311 of the shell body 310, and the remaining portion of the mounting portion 230 of one or more terminals 200 may be located outside the shell body 310. Alternatively, the entire mounting portion 230 of one or more terminals 200 may be located outside the shell body 310.

[0064] The internal space 311 of the shell main body 310 may have, for example, a central space 311o and a first space 311a and / or a second space 311b. The first space 311a is located on the Y-direction side of the central space 311o, is connected to the central space 311o, and is open in the Y-direction. The second space 311b is located on the Y'-direction side of the central space 311o, is connected to the central space 311o, and is open in the Y'-direction. The second space 311b may be open in the Z'-direction (see FIGS. 1A to 1E), but is not limited thereto. The shapes and sizes of the cross sections of the second space 311b in the X-X' and Z-Z' directions correspond to the outer shapes and sizes of the cross sections of the base 110 of the body 100 in the X-X' and Z-Z' directions.

[0065] When the body 100 has the above-described configuration (A), the base 110 of the body 100 is housed and held in the second space 311b, and the protrusion 120 of the body 100 is housed in the central space 311o. The tip 220 and the first portion of the main body 210 of one or more terminals 200 are housed in the central space 311o together with the protrusion 120 of the body 100, and the second portion of the main body 210 of one or more terminals 200 is housed in the second space 311b together with the base 110. ( See Figure 1C).

[0066] When the body 100 has the above-described configuration (A), the base 110 of the body 100 is accommodated and held within the second space 311b. The tip portions 220 of one or more terminals 200 are accommodated within the central space 311o, and the main body portions 210 of one or more terminals 200 are accommodated within the second space 311b together with the base portion 110 of the body 100 (not shown).

[0067] The cross-sectional dimensions of the first space 311a in the X-X' and Z-Z' directions are larger than the cross-sectional dimensions of the central space 311o in the X-X' and Z-Z' directions. The inner peripheral surface of the first space 311a may be provided with a plurality of key grooves extending in the Y-Y' direction. The inner peripheral surface of the first space 311a may also be provided with a lock hole. The key groove and / or the lock hole may be omitted. It is also possible to omit the first space 311a of the shell body 310 altogether.

[0068] Shell body 310 has bottom surface 310c on the Z'-direction side, top surface 310d on the Z-direction side, first side surface 310e on the X-direction side, and second side surface 310f on the X'-direction side.

[0069] Shell 300 further has first leg portion 321 and second leg portion 322. First leg portion 321 and second leg portion 322 are protrusions that are elongated in the Y-Y' direction and extend in the Z' direction from bottom surface 310c of shell body 310. First leg portion 321 and second leg portion 322 may be configured to be integrated with shell body 310 (see FIGS. 1A to 1E), or may be configured to be separate from shell body 310 and fixed to shell body 310 (not shown).

[0070] First leg portion 321 may be disposed so that its side surface on the X direction is flush with first side surface 310e of shell body 310 (see FIGS. 1A to 1E), or its side surface on the X direction may be located closer to the X direction or the X' direction than first side surface 310e of shell body 310 (not shown). Second leg portion 322 may be disposed so that its side surface on the X' direction is flush with second side surface 310f of shell body 310 (see FIGS. 1A to 1E), or its side surface on the X' direction may be located closer to the X' direction or the X direction than second side surface 310f of shell body 310 (not shown).

[0071] The first leg 321 is arranged on the X-direction side relative to one or more terminals 200. The second leg 322 is arranged on the X'-direction side relative to one or more terminals 200. In other words, one or more terminals 200 are located between the first leg 321 and the second leg 322 in the X-X' direction. The first leg 321 and the second leg 322 face each other in the X-X' direction.

[0072] The first leg portion 321 and the second leg portion 322 are positioned so as to be substantially symmetrical in the X-X' direction with the first virtual line CL1 (see FIG. 1C) or the second virtual line (not shown) as the axis of symmetry (hereinafter, this position1A to 1E), but is not limited thereto. The first leg portion 321 and the second leg portion 322 may have a shape that is approximately line-symmetric in the X-X' direction with the first virtual line CL1 or the second virtual line as the axis of symmetry (hereinafter, this shape will also be simply referred to as an "axis-symmetric shape") (see FIGS. 1A to 1E), but is not limited thereto. When there is at least one terminal 200, the first virtual line CL1 preferably extends in the Y-Y' direction through approximately the center of the main body 210 of one terminal 200 (see FIGS. 1A to 1E). When there are a plurality of at least one terminal 200, the second virtual line may extend in the Y-Y' direction, passing through approximately the midpoint in the straight-line distance in the X-X' direction from the X-direction end of the main body 210 of the terminal 200 located furthest in the X-direction to the X'-direction end of the main body 210 of the terminal 200 located furthest in the X'-direction (not shown). However, the positions and shapes of the first leg 321 and the second leg 322 are not limited to the line-symmetric positions and line-symmetric shapes described above.

[0073] The dimension of first leg 321 in the Y-Y' direction is larger than the dimension of first leg 321 in the X-X' direction. The dimension of second leg 322 in the Y-Y' direction is larger than the dimension of second leg 322 in the X-X' direction. The dimension of first leg 321 in the Y-Y' direction and the dimension of second leg 322 in the Y-Y' direction can be approximately the same (see FIGS. 1A to 1E), but may be different (not shown). The dimension of first leg 321 in the X-X' direction and the dimension of second leg 322 in the X-X' direction can be approximately the same (see FIGS. 1A to 1E), but may be different (not shown).

[0074] The dimensions of the first leg 321 and the second leg 322 in the Y-Y' direction are greater than the dimension of the tip portion 220 of at least one terminal 200 in the Y-Y' direction. The first leg 321 has a first end 321a on the Y-direction side and a second end 321b on the Y'-direction side. The second leg 322 has a first end 322a on the Y-direction side and a second end 322b on the Y'-direction side. The first end 321a of the first leg 321 and the first end 322a of the second leg 322 are located on the Y-direction side of the first end 220a of the tip portion 220 of at least one terminal 200, and the second end 321b of the first leg 321 and the second end 322b of the second leg 322 are located on the Y'-direction side of the second end 220b of the tip portion 220 of at least one terminal 200.

[0075] The dimensions of first leg portion 321 and second leg portion 322 in the Y-Y' direction can be larger than the dimension of one or more terminals 200 in the Y-Y' direction (see FIGS. 1A to 1E). In this case, first leg portion 321 has first portion 3211 extending from shell body 310 in the Z' direction and second portion 3212 extending from first portion 3211 in the Y' direction, and second leg portion 322 has first portion 3221 extending from shell body 310 in the Z' direction and second portion 3222 extending from first portion 3221 in the Y' direction. The first portion 3211 of the first leg 321 is located on the X-direction side relative to the Y-direction portions of the tip portions 220, main body portions 210, and mounting portions 230 of one or more terminals 200, and the second portion 3212 of the first leg 321 is located on the Y'-direction side relative to the shell body 310 and on the X-direction side relative to the Y'-direction portions of the mounting portions 230 of one or more terminals 200. The first portion 3221 of the second leg 322 is located on the X'-direction side relative to the Y-direction portions of the tip portions 220, main body portions 210, and mounting portions 230 of one or more terminals 200, and the second portion 3222 of the second leg 322 is located on the Y'-direction side relative to the shell body 310 and on the X'-direction side relative to the Y'-direction portions of the mounting portions 230 of one or more terminals 200. The first end 321a of the first leg 321 and the first end 322a of the second leg 322 are positioned as described above, and the second end 321b of the first leg 321 and the second end 322b of the second leg 322 are positioned at approximately the same position as the second end 230b of the mounting portion 230 of one or more terminals 200 in the Y-Y' direction. Located in Or, it is located on the Y′ direction side with respect to the second end 230 b of the mounting portion 230 .

[0076] The dimensions of the first leg portion 321 and the second leg portion 322 in the Z-Z' direction are larger than the dimension of the mounting portion 230 of one or more terminals 200 in the Z-Z' direction. The first leg portion 321 further has a third end 321c on the Z' direction side. The second leg portion 322 further has a third end 322c on the Z' direction side. The third ends 321c of the first leg portion 321 and the third ends 322c of the second leg portion 322 are located on the Z' direction side with respect to the third ends 230c of the mounting portions 230 of the one or more terminals 200 (see FIGS. 1A to 1C).

[0077] When the first leg 321 has a first portion 3211 and a second portion 3212 and the second leg 322 has a first portion 3221 and a second portion 3222, the first leg 321 further has a fourth end 321d on the Z-direction side and the second leg 322 further has a fourth end 322d on the Z-direction side. The fourth end 321d of the first leg 321 is the end of the second portion 3212 of the first leg 321 on the Z-direction side, and the fourth end 322d of the second leg 322 is the end of the second portion 3222 of the second leg 322 on the Z-direction side. Fourth end 321d of first leg portion 321 and fourth end 322d of second leg portion 322 may be located at approximately the same position in the Z-Z' direction as fourth end 230d of mounting portion 230 of one or more terminals 200 (not shown), or may be located on the Z-direction side relative to fourth end 230d of mounting portion 230 of one or more terminals 200 (see FIGS. 1A to 1C). In the latter case, second portion 3212 of first leg portion 321 and second portion 3222 of second leg portion 322 may extend in the Z direction such that fourth end 321d of first leg portion 321 and fourth end 322d of second leg portion 322 are located at the same position as top surface 310d of shell body 310 in the Z-Z' direction.

[0078] Shell 300 may further have a first connecting portion (not shown) that connects second portion 3212 of first leg portion 321 and second portion 3222 of second leg portion 322 in the Z direction relative to mounting portion 230 of one or more terminals 200. This first connecting portion is optional (see FIGS. 1A to 1E).

[0079] The shell 300 of the connector C1 may further have at least one protrusion 340 (see FIGS. 1A to 1E). The at least one protrusion 340 extends in the Z' direction from the bottom surface 310c of the shell body 310 and has a tip 340c on the Z' direction side. The tip 340c of the at least one protrusion 340 is located at approximately the same position in the Z-Z' direction as the third ends 230c of the mounting portions 230 of one or more terminals 200. Note that there may be multiple at least one protrusion 340. Furthermore, the at least one protrusion 340 can be omitted. In this case, the third ends 230c of the mounting portions 230 of one or more terminals 200 are located at approximately the same position in the Z-Z' direction as the bottom surface 310c of the shell body 310.

[0080] The connector C1 may further include a shield cover 400 (see FIGS. 1A to 1E). The shield cover 400 has a cover portion 410 and at least two engagement arms 420. The cover portion 410 is a conductive plate (e.g., a metal plate) and abuts against the shell body 310 of the shell 300 so as to close the internal space 311 of the shell body 310 from the Y′ direction side. The at least two engagement arms 420 extend in the Y direction from the X direction end and the X′ direction end of the cover portion 410. At least two engagement portions 350 are provided on two of the bottom surface 310c, the top surface 310d, the first side surface 310e, and the second side surface 310f of the shell body 310. One of the at least two engagement arms 420 and the at least two engagement portions 350 may be provided with an engagement protrusion, and the other may be provided with an engagement hole into which the engagement protrusion fits. The shield cover 400 can be omitted.

[0081] The connector C1 may further include a ground terminal 500 (see FIGS. 1A to 1E). The ground terminal 500 has a first annular portion 510, a second annular portion 520, and a plurality of contact springs 530. The first annular portion 510 and the second annular portion 520 are C-shaped or annular metal plates and are arranged at intervals in the Y-Y′ direction. The plurality of contact springs 530 are provided between the first annular portion 510 and the second annular portion 520 and are arranged at intervals in the circumferential direction of the first annular portion 510. The plurality of contact springs 530 have intermediate portions curved in an arc shape so as to be convex toward a third imaginary line CL2 (see FIG. 1D) that passes through the centers of the first annular portion 510 and the second annular portion 520 and extends in the Y-Y′ direction. The ground terminal 500 is accommodated in the central space 311o of the internal space 311 of the shell body 310, and a plurality of contact springs 530 of the ground terminal 500 are arranged around the tip end 220 of one or more terminals 200. Note that the ground terminal 500 can be omitted.

[0082] The connector C1 as described above has the following technical features and effects.

[0083] (First technical feature and effect) The EMI (Electromagnetic Interference) characteristics of the connector C1 can be improved for the following reasons: The first leg 321 and the second leg 322 of the shell 300 of the connector C1 are elongated protrusions in the Y-Y' direction and are located on the X-direction side and the X'-direction side of one or more terminals 200, so that the distance from the first leg 321 and the second leg 322 of the shell 300 of the connector C1 to one or more terminals 200 is shorter than the front leg and rear legThe distance between the first leg 321 and the second leg 322 and the terminal 310 is shorter than the distance from the first leg 321 to the terminal 310. Furthermore, because the first leg 321 and the second leg 322 are elongated protrusions in the Y-Y' direction, the cross-sectional areas of the first leg 321 and the second leg 322 in the Y-Y' direction and the Z-Z' direction are larger than the corresponding cross-sectional areas of the front and rear legs of conventional connectors. The first leg 321 and the second leg 322 are connected to the ground during use (as will be described in detail later), thereby improving the ground strength of the connector C1. Therefore, even if a high-speed signal transmitted by one or more terminals 200 during use is reflected on one or more terminals 200, generating noise due to the reflection of the high-speed signal and radiating it to the shell body 310 of the shell 300, the noise is more likely to flow to the ground from the first leg 321 and / or the second leg 322 of the connector C1. Therefore, it is possible to suppress the possibility that noise radiated to the shell body 310 of the shell 300 will be re-radiated from the edge-shaped portion of the shell body 310. In particular, when the first end 321a of the first leg 321 and the first end 322a of the second leg 322 are located on the Y-direction side with respect to the first end 220a of the tip portion 220 of one or more terminals 200, and the second end 321b of the first leg 321 and the second end 322b of the second leg 322 are located on the Y'-direction side with respect to the second end 230b of the mounting portion 230 of one or more terminals 200, it is possible to suppress the possibility that the first leg 321 and the second leg 322 will extend over the entire length of the one or more terminals 200 in the Y-Y' direction. Since the legs 321 and 322 are arranged on the X-direction side and the X'-direction side of one or more terminals 200, even if a high-speed signal is reflected at one or more terminals 200 and noise is generated by the reflection of the high-speed signal and radiated to shell body 310, the noise is more likely to flow from first leg portion 321 and / or second leg portion 322 of shell body 310 to the ground, and as a result, the possibility of noise being re-radiated from the edge-shaped portion of shell body 310 is further suppressed.

[0084] (Second technical features and effects) The EMC (Electromagnetic Compatibility) characteristics of the connector C1 can be improved. The reason for this is as follows: Since the first leg 321 and the second leg 322 of the connector C1 are elongated protrusions in the Y-Y' direction, the cross-sectional areas of the first leg 321 and the second leg 322 in the Y-Y' direction and the Z-Z' direction, respectively, are increased. This reduces the impedance of the first leg 321 and the second leg 322, thereby strengthening the ground of the connector C1. This allows the EMC characteristics of the connector C1 to be improved.

[0085] (Third Technical Features and Effects) When the shield cover 400 of the connector C1 blocks the internal space 311 of the cylindrical shell body 310 of the shell 300 from the Y' direction side, the second end 210b and / or the mounting portion 230 of the approximately L-shaped main body portion 210 of at least one terminal 200 housed in the internal space 311 of the shell body 310 can function as an antenna, thereby reducing the possibility of noise being radiated outside the shell body 310.

[0086] "Connector C1' according to multiple embodiments including embodiment 2 and its design variations" A connector C1' according to multiple embodiments of the present invention, including a second embodiment and its design variations, will be described below with reference to Figures 2A to 2C. Figures 2A and 2B show the connector C1' of the second embodiment. Figure 2C shows a first design variation of the connector C1' of the second embodiment. Figures 2A and 2C show the Y-Y', Z-Z', and X-X' directions, similar to Figure 1A. Figure 2B shows the Y-Y' and Z-Z' directions, similar to Figure 1C.

[0087] Connector C1' has the same configuration as connector C1, except that the shell 300 further includes a first wall portion 331 and a second wall portion 332. The differences will be described in detail below, and any explanation of connector C1' that overlaps with the explanation of connector C1 will be omitted. Note that the reference numerals of the components of connector C1' other than the first wall portion 331 and the second wall portion 332 will be the same as the reference numerals of the corresponding components of connector C1.

[0088] The first wall 331 extends in the Y' direction from the shell body 310 and is positioned on the X' direction side away from the mounting portions 230 of one or more terminals 200. The second wall 332 extends in the Y' direction from the shell body 310 and is positioned on the X' direction side away from the mounting portions 230 of one or more terminals 200.

[0089] When first leg 321 has first portion 3211 and second portion 3212 and second leg 322 has first portion 3221 and second portion 3222, first wall portion 331 is located between mounting portion 230 of one or more terminals 200 and second portion 3212 of first leg 321 in the X-X' direction, and second wall portion 332 is located between mounting portion 230 of one or more terminals 200 and second portion 3222 of second leg 322 in the X-X' direction. First wall portion 331 may be integrated with first leg 321 (see FIG. 2A ), or may be disposed with a gap between first wall portion 331 and first leg 321 in the X-X' direction (not shown). The second wall portion 332 may be integral with the second leg portion 322 (see FIG. 2A), or may be arranged with a gap between it and the second leg portion 322 in the XX' direction (not shown).

[0090] When the second end 321b of the first leg 321 and the second end 322b of the second leg 322 are located on the Y-direction side of the first end 331a on the Y-direction side of the first wall 331 and the first end 332a on the Y-direction side of the second wall 332, the first leg 321 does not exist on the X-direction side of the first wall 331 and the second leg 322 does not exist on the X'-direction side of the second wall 332.

[0091] The first wall portion 331 has the first end 331a, a second end 331b on the Y'-direction side, a third end 331c on the Z'-direction side, and a fourth end 331d on the Z-direction side. The second wall portion 332 has the first end 332a, a second end 332b on the Y'-direction side, a third end 332c on the Z'-direction side, and a fourth end 332d on the Z-direction side.

[0092] A first end 331a of the first wall portion 331 and a first end 332a of the second wall portion 332 are connected to the shell main body 310. A second end 331b of the first wall portion 331 and a second end 332b of the second wall portion 332 may be located at approximately the same position in the Y-Y' direction as a second end 230b of the mounting portion 230 of one or more terminals 200 (not shown), or may be located on the Y'-direction side relative to the second end 230b of the mounting portion 230 of one or more terminals 200 (see FIGS. 2A and 2B).

[0093] The third end 331c of the first wall portion 331 and the third end 332c of the second wall portion 332 are located at approximately the same position in the Z-Z' direction as the third end 230c of the mounting portion 230 of one or more terminals 200 (see FIGS. 2A and 2B). The fourth end 331d of the first wall portion 331 and the fourth end 332d of the second wall portion 332 may be located at approximately the same position in the Z-Z' direction as the fourth end 230d of the mounting portion 230 of one or more terminals 200 (not shown), or may be located on the Z-direction side of the fourth end 230d of the mounting portion 230 of one or more terminals 200 (see FIGS. 2A and 2B). In the latter case, the first wall portion 331 and the second wall portion 332 may extend in the Z direction such that the fourth end 331d of the first wall portion 331 and the fourth end 332d of the second wall portion 332 are positioned at approximately the same position in the Z-Z′ direction as the fourth end 321d of the first leg portion 321 and the fourth end 322d of the second leg portion 322, or such that the fourth end 331d of the first wall portion 331 and the fourth end 332d of the second wall portion 332 are positioned closer to the Z direction than the fourth end 321d of the first leg portion 321 and the fourth end 322d of the second leg portion 322. Furthermore, the first wall portion 331 and the second wall portion 332 may extend in the Z direction such that the fourth end 331d of the first wall portion 331 and the fourth end 332d of the second wall portion 332 are positioned at the same position as the top surface 310d of the shell main body 310 in the Z-Z′ direction.

[0094] Shell 300 may further include a second connecting portion 360 (see FIG. 2C ) that connects first wall portion 331 and second wall portion 332 in the Z direction relative to mounting portion 230 of one or more terminals 200. This second connecting portion 360 is optional.

[0095] In addition, when the wall on the X direction side and the wall on the X′ direction side of the internal space 311 of the shell main body 310 are located on the X direction side and the X′ direction side with respect to the mounting portion 230 of one or more terminals 200, the first wall portion 331 is located on the Y′ direction side from the shell main body 310. to Instead of extending in the Y' direction from shell body 310, first wall portion 331 and second wall portion 332 can be configured to be formed by a part of the wall on the X' direction side of internal space 311 of shell body 310 and to be positioned at a distance on the X' direction side from mounting portions 230 of one or more terminals 200, and second wall portion 332 can also be configured to be formed by a part of the wall on the X' direction side of internal space 311 of shell body 310 and to be positioned at a distance on the X' direction side from mounting portions 230 of one or more terminals 200. First wall portion 331 and second wall portion 332 can have the above-mentioned configurations other than being walls.

[0096] Similar to the shell 300 of the connector C1, one or more protrusions 340 may or may not be provided on the bottom surface 310c of the shell body 310 of the shell 300 of the connector C1'.

[0097] The connector C1' may include the shield cover 400 and / or the ground terminal 500, or may not include the shield cover 400 and / or the ground terminal 500.

[0098] The connector C1' described above has the following technical features and effects.

[0099] Connector C1' has the same technical features and effects as connector C1. Furthermore, first wall portion 331 and second wall portion 332 of shell 300 of connector C1' extend in the Y' direction from shell body 310 and are disposed on the X and X' direction sides of mounting portion 230 of one or more terminals 200. When first wall portion 331 and second wall portion 332 are connected to ground during use, the ground strength of connector C1' is improved, and as a result, the EMI characteristics of connector C1' are improved.

[0100] The connector C1' has the same technical features and effects as the second and third technical features and effects of the connector C1.

[0101] "Connector C2 according to multiple embodiments including embodiment 3 and its design variations" A connector C2 according to a third embodiment of the present invention and several other embodiments, including design variations thereof, will be described below with reference to Figures 3A and 3B. Figures 3A and 3B show the connector C2 of the third embodiment. Similar to Figure 1B, Figure 3A shows the Y-Y', Z-Z', and X-X' directions. Similar to Figure 1C, Figure 3B shows the Y-Y' and Z-Z' directions.

[0102] Connector C2 has the same configuration as connector C1, except that the configuration of mounting portion 230 of at least one terminal 200 differs from the configuration of mounting portion 230 of at least one terminal 200 of connector C1. These differences will be described in detail below, and any explanation of connector C2 that overlaps with the explanation of connector C1 will be omitted. Note that the reference numerals used for the components of connector C2 are the same as the reference numerals used for the corresponding components of connector C1.

[0103] The mounting portion 230 of one or more terminals 200 is configured as a rod or a flat plate extending in the Z' direction from the third end 210c of the main body portion 210. The dimension of the mounting portion 230 in the Y-Y' direction may be the same as or smaller than the dimension of the second portion of the main body portion 210 in the Y-Y' direction. A portion of the mounting portion 230 may be housed in the base portion 110 of the body 100, and the remaining portion may be located outside the body 100 (on the Z' direction side relative to the body 100) (see FIG. 3B), or the entire mounting portion 230 may be located outside the body 100 (on the Z' direction side relative to the body 100) (not shown). The mounting portion 230 has a first end 230a on the Y direction side, a second end 230b on the Y' direction side, a third end 230c on the Z' direction side, and a fourth end 230d on the Z direction side.

[0104] The third end 321c of the first leg 321 of the shell 300 and the second leg 322 The third end 322 c may be located at approximately the same position in the Z-Z' direction relative to the third end 230c of the mounting portion 230 of one or more terminals 200, or may be located on the Z' direction side relative to the third end 230c of the mounting portion 230 of one or more terminals 200.

[0105] Similar to the shell 300 of the connector C1, one or more protrusions 340 may or may not be provided on the bottom surface 310c of the shell body 310 of the shell 300 of the connector C2.

[0106] The connector C2 may include the shield cover 400 and / or the ground terminal 500, or may not include the shield cover 400 and / or the ground terminal 500.

[0107] The connector C2 as described above has the same technical features and effects as the first to third technical features and effects of the connector C1.

[0108] "Connector C2' according to multiple embodiments including Example 4 and its design variations" A connector C2' according to multiple embodiments of the present invention, including a fourth embodiment and its design variations, will be described below with reference to FIGS. 4A and 4B. FIGS. 4A and 4B show the connector C2' of the fourth embodiment. FIG. 4C shows a first design variation of the connector C2' of the fourth embodiment. Similar to FIG. 1A, FIGS. 4A and 4C show the Y-Y', Z-Z', and X-X' directions. Similar to FIG. 3B, FIG. 4B shows the Y-Y' and Z-Z' directions.

[0109] Connector C2' has the same configuration as connector C2, except that shell 300 further includes first wall portion 331 and second wall portion 332. The differences will be described in detail below, and any explanation of connector C2' that overlaps with the explanation of connector C2 will be omitted. Note that the reference numerals of the components of connector C2' other than first wall portion 331 and second wall portion 332 will be the same as the reference numerals of the corresponding components of connector C2.

[0110] The first wall portion 331 and the second wall portion 332 of connector C2' have substantially the same configuration as the first wall portion 331 and the second wall portion 332 of connector C1', except for the following differences. These differences will be described in detail, and the description of the first wall portion 331 and the second wall portion 332 of connector C2' that overlaps with the description of the first wall portion 331 and the second wall portion 332 of connector C1' will be omitted. Note that the reference numerals used for the components of the first wall portion 331 and the second wall portion 332 of connector C2' are the same as the reference numerals used for the corresponding components of the first wall portion 331 and the second wall portion 332 of connector C1'.

[0111] (Difference) When one or more protrusions 340 are provided on bottom surface 310c of shell body 310 (see FIG. 4B), third end 331c of first wall portion 331 and third end 332c of second wall portion 332 are located at approximately the same position in the Z-Z' direction as tips 340c of one or more protrusions 340. When one or more protrusions 340 are not provided on bottom surface 310c of shell body 310 (not shown), third end 331c of first wall portion 331 and third end 332c of second wall portion 332 are located at approximately the same position in the Z-Z' direction as bottom surface 310c of shell body 310.

[0112] Shell 300 may further include a second connecting portion 360 (see FIG. 4C ) that connects first wall portion 331 and second wall portion 332 in the Z direction relative to mounting portion 230 of one or more terminals 200. This second connecting portion 360 is optional.

[0113] The connector C2' may include the shield cover 400 and / or the ground terminal 500, or may not include the shield cover 400 and / or the ground terminal 500.

[0114] The connector C2' described above has the following technical features and effects.

[0115] Connector C2' has the same technical features and effects as the first technical feature and effect of connector C2. Furthermore, first wall portion 331 and second wall portion 332 of shell 300 of connector C2' extend in the Y' direction from shell body 310 and are disposed on the X and X' direction sides of mounting portion 230 of one or more terminals 200. When first wall portion 331 and second wall portion 332 are connected to ground during use, the ground strength of connector C2' is improved, and as a result, the EMI characteristics of connector C2' are improved.

[0116] The connector C2' has the same technical features and effects as the second and third technical features and effects of the connector C2.

[0117] "Connector C3 according to multiple embodiments including embodiment 5 and its design variations" A connector C3 according to a fifth embodiment of the present invention and several other embodiments, including design variations thereof, will be described below with reference to Figures 5A to 5E. Figures 5A to 5E show the connector C3 of the fifth embodiment. Figures 5A to 5E show the Y-Y' and Z-Z' directions, similar to Figures 1A to 1E. Figures 5A, 5B, 5C, 5D, and 5E show the X-X' direction, similar to Figures 1A, 1B, 1C, 1D, and 1E.

[0118] Connector C3 has the same configuration as connector C1, except that the dimensions in the Y-Y' direction of first leg 321 and second leg 322 of shell 300 are smaller than the dimensions in the Y-Y' direction of first leg 321 and second leg 322 of connector C1, and shell 300 further includes third leg 323 and fourth leg 324. The differences will be described in detail below, and any explanation of connector C3 that overlaps with the explanation of connector C1 will be omitted. Note that the reference numerals of the components of connector C3 other than the third leg 323 and fourth leg 324 are the same as the reference numerals of the corresponding components of connector C1.

[0119] The first end 321a of the first leg 321 and the first end 322a of the second leg 322 are located on the Y-direction side of the first end 220a of the tip portion 220 of one or more terminals 200, and the second end 321b of the first leg 321 and the second end 322b of the second leg 322 are located on the Y-Y' direction side of the second end 220b of the tip portion 220 of one or more terminals 200 and the Y' direction side of the first portion of the main body 210 of one or more terminals 200. side Therefore, first leg 321 is arranged on the X-direction side of tip end 220 of one or more terminals 200 and the Y-direction side of the first part of main body 210, and second leg 322 is arranged on the X'-direction side of tip end 220 of one or more terminals 200 and the Y-direction side of the first part of main body 210.

[0120] The third leg portion 323 is a protrusion elongated in the Y-Y' direction extending in the Z' direction from the bottom surface 310c of the shell body 310, and is disposed on the Y'-direction side with a gap from the first leg portion 321, and is disposed on the X-direction side with respect to the mounting portion 230 of one or more terminals 200. 324 is a protrusion elongated in the Y-Y' direction extending in the Z' direction from the bottom surface 310c of the shell body 310, and is disposed at an interval on the Y' direction side relative to the second leg portion 322 and is connected to the mounting portion 230 of one or more terminals 200. X' direction side are located at.

[0121] The third leg 323 may be disposed so that its side surface on the X-direction side is flush with the first side surface 310e of the shell body 310, or the side surface on the X-direction side may be positioned closer to the X-direction side or the X'-direction side than the first side surface 310e of the shell body 310. 324 may be arranged so that its side surface on the X' direction side is flush with second side surface 310f of shell main body 310, or may be positioned closer to the X' direction or the X direction than second side surface 310f of shell main body 310.

[0122] Third leg 323 and fourth leg 324 may be configured to be integrated with shell body 310 (see FIGS. 5A to 5E), or may be configured to be separate from shell body 310 and fixed to shell body 310 (not shown).

[0123] The third leg portion 323 and the fourth leg portion 324 may be disposed at positions that are substantially symmetrical in the X-X' direction with the first virtual line CL1 or the second virtual line as the axis of symmetry (see FIGS. 5A to 5C). E The third leg portion 323 and the fourth leg portion 324 may have a shape that is approximately symmetrical in the X-X' direction with the first virtual line CL1 or the second virtual line as the axis of symmetry (see FIGS. 5A to 5E), but are not limited to this.

[0124] The dimension of the third leg 323 in the Y-Y' direction is larger than the dimension of the third leg 323 in the X-X' direction. The dimension of the fourth leg 324 in the Y-Y' direction is larger than the dimension of the fourth leg 324 in the X-X' direction. The dimension of the third leg 323 in the Y-Y' direction and the dimension of the fourth leg 324 in the Y-Y' direction are approximately the same (see FIGS. 5A to 5E). thing The dimension of third leg 323 in the XX' direction and the dimension of fourth leg 324 in the XX' direction can be approximately the same (see FIGS. 5A to 5E), but they may be different (not shown).

[0125] The third leg 323 has a first end 323a on the Y direction side, a second end 323b on the Y' direction side, a third end 323c on the Z' direction side, and a fourth end 323d on the Z direction side. The fourth leg 324 has a first end 324a on the Y direction side, a second end 324b on the Y' direction side, a third end 324c on the Z' direction side, and a fourth end 324d on the Z direction side.

[0126] The first end 323a of the third leg 323 and the first end 324a of the fourth leg 324 may be located at approximately the same position in the Y-Y' direction as the first end 230a of the mounting portion 230 of one or more terminals 200 (not shown), or may be located on the Y-direction side relative to the first end 230a of the mounting portion 230 of one or more terminals 200 (see Figures 5A to 5E).

[0127] The second end 323b of the third leg 323 and the second end 324b of the fourth leg 324 may be located at approximately the same position in the Y-Y' direction as the second end 230b of the mounting portion 230 of one or more terminals 200 (not shown), or may be located on the Y'-direction side relative to the second end 230b of the mounting portion 230 of one or more terminals 200 (see Figures 5A to 5E).

[0128] A third end 323c of the third leg 323 and a third end 324c of the fourth leg 324 are located at approximately the same position in the Z-Z' direction as a third end 230c of the mounting portion 230 of one or more terminals 200. A fourth end 323d of the third leg 323 and a fourth end 324d of the fourth leg 324 may be located at approximately the same position in the Z-Z' direction as a fourth end 230d of the mounting portion 230 of one or more terminals 200, or may be located on the Z-direction side of the fourth end 230d of the mounting portion 230 of one or more terminals 200.

[0129] Similar to the shell 300 of the connector C1, the bottom surface 310c of the shell body 310 of the shell 300 of the connector C3 may or may not be provided with one or more protrusions 340. When one or more protrusions 340 are not provided, the third ends 230c of the mounting portions 230, the third ends 323c of the third leg portions 323, and the third ends 324c of the fourth leg portions 324 of one or more terminals 200 are positioned at approximately the same position in the Z-Z' direction as the bottom surface 310c of the shell body 310.

[0130] The connector C3 may or may not include the shield cover 400 and / or the ground terminal 500.

[0131] The connector C3 as described above has the following technical features and effects.

[0132] (First technical feature and effect) The EMI characteristics of connector C3 can be improved for the following reason: First leg portion 321 and second leg portion 322 of shell 300 of connector C3 are elongated protrusions in the Y-Y′ direction and are located on the X and X′ directions relative to tip end portion 220 of one or more terminals 200 and the Y direction portion of the first portion of main body portion 210, thereby shortening the distance from first leg portion 321 and second leg portion 322 of shell 300 of connector C3 to tip end portion 220 of one or more terminals 200 and the Y direction portion of the first portion of main body portion 210. The third leg portion 323 and the fourth leg portion 324 of the shell 300 of the connector C3 are protrusions that are elongated in the Y-Y' direction and are located on the X and X' directions sides of the mounting portion 230 of one or more terminals 200, respectively, so that the distance from the third leg portion 323 and the fourth leg portion 324 of the shell 300 of the connector C3 to the mounting portion 230 of one or more terminals 200 is short. Moreover, because the first leg portion 321, the second leg portion 322, the third leg portion 323, and the fourth leg portion 324 are protrusions that are elongated in the Y-Y' direction, the cross-sectional areas of the first leg portion 321, the second leg portion 322, the third leg portion 323, and the fourth leg portion 324 in the Y-Y' direction and the Z-Z' direction, respectively, are larger than the cross-sectional areas of the corresponding cross sections of the front leg and the rear leg of the conventional connector. The first leg 321, the second leg 322, the third leg 323, and the fourth leg 324 of the connector C3 are connected to the ground during use (as will be described in detail later), thereby improving the ground strength of the connector C3. Therefore, even if a high-speed signal transmitted by one or more terminals 200 during use is reflected on one or more terminals 200, and the reflected high-speed signal generates noise that is radiated to the shell body 310 of the shell 300, the noise is likely to flow to the ground from at least one of the first leg 321, the second leg 322, the third leg 323, and the fourth leg 324 of the connector C3. Therefore, it is possible to reduce the possibility that noise radiated to the shell body 310 of the shell 300 will be re-radiated from the edge-shaped portion of the shell body 310.

[0133] (Second technical features and effects) The EMC characteristics of the connector C3 can be improved. The reason is as follows. The first leg 321, the second leg 322, the third leg 323, and the fourth leg 324 of the connector C3 are elongated protrusions in the Y-Y' direction, so the cross-sectional areas of the first leg 321, the second leg 322, the third leg 323, and the fourth leg 324 in the Y-Y' direction and the Z-Z' direction are increased. This reduces the impedance of the first leg 321, the second leg 322, the third leg 323, and the fourth leg 324, and strengthens the grounding of the connector C3. This improves the EMC characteristics of the connector C3.

[0134] (Third Technical Features and Effects) The connector C3 has the same technical features and effects as the third technical feature and effect of the connector C1.

[0135] "Connector C3' according to multiple embodiments including Example 6 and its design variations" A connector C3' according to a sixth embodiment of the present invention and several other embodiments, including design variations thereof, will be described below with reference to Figures 6A to 6C. Figures 6A and 6B show the connector C3' of the sixth embodiment. Figure 6C shows a first design variation of the connector C3' of the sixth embodiment. Figures 6A and 6C show the Y-Y', Z-Z', and X-X' directions, similar to Figure 5A. Figure 6B shows the Y-Y' and Z-Z' directions, similar to Figure 5B.

[0136] Connector C3' has the same configuration as connector C3, except that shell 300 further includes first wall portion 331 and second wall portion 332. The differences will be described in detail below, and any explanation of connector C3' that overlaps with the explanation of connector C3 will be omitted. Note that the reference numerals of the components of connector C3' other than first wall portion 331 and second wall portion 332 will be the same as the reference numerals of the corresponding components of connector C3.

[0137] First wall portion 331 extends in the Y' direction from shell body 310 and is disposed in the X-X' direction between mounting portion 230 of one or more terminals 200 and third leg portion 323. First wall portion 331 is positioned on the X-direction side with a gap between it and mounting portion 230 of one or more terminals 200. First wall portion 331 may be integrated with third leg portion 323 (see FIG. 6A), or may be disposed with a gap between it and third leg portion 323 in the X-X' direction (not shown).

[0138] The second wall portion 332 extends in the Y' direction from the shell body 310 and is disposed in the X-X' direction between the mounting portion 230 of one or more terminals 200 and the fourth leg portion 324. The second wall portion 332 is positioned on the X'-direction side with a gap between it and the mounting portion 230 of one or more terminals 200. The second wall portion 332 may be integrated with the fourth leg portion 324 (see FIG. 6A), or may be disposed with a gap between it and the fourth leg portion 324 in the X-X' direction (not shown).

[0139] The first wall 331 has a first end 331a on the Y direction side, a second end 331b on the Y' direction side, a third end 331c on the Z' direction side, and a fourth end 331d on the Z direction side. The second wall 332 has a first end 332a on the Y direction side, a second end 332b on the Y' direction side, a third end 332c on the Z' direction side, and a fourth end 332d on the Z direction side.

[0140] A first end 331a of the first wall portion 331 and a first end 332a of the second wall portion 332 are connected to the shell main body 310. A second end 331b of the first wall portion 331 and a second end 332b of the second wall portion 332 may be located at approximately the same position in the Y-Y' direction as a second end 230b of the mounting portion 230 of one or more terminals 200 (not shown), or may be located on the Y'-direction side relative to the second end 230b of the mounting portion 230 of one or more terminals 200 (see FIGS. 6A and 6B ). reference).

[0141] The third end 331c of the first wall portion 331 and the third end 332c of the second wall portion 332 are located at approximately the same position in the Z-Z' direction as the third end 230c of the mounting portion 230 of one or more terminals 200 (see FIGS. 6A and 6B). The fourth end 331d of the first wall portion 331 and the fourth end 332d of the second wall portion 332 may be located at approximately the same position in the Z-Z' direction as the fourth end 230d of the mounting portion 230 of one or more terminals 200 (not shown), or may be located on the Z-direction side relative to the fourth end 230d of the mounting portion 230 of one or more terminals 200 (see FIGS. 6A and 6B). In the latter case, the first wall portion 331 and the second wall portion 332 may extend in the Z direction such that the fourth end 331d of the first wall portion 331 and the fourth end 332d of the second wall portion 332 are positioned at approximately the same position in the Z-Z′ direction as the fourth end 323d of the third leg portion 323 and the fourth end 324d of the fourth leg portion 324, or such that the fourth end 331d of the first wall portion 331 and the fourth end 332d of the second wall portion 332 are positioned closer to the Z direction than the fourth end 323d of the third leg portion 323 and the fourth end 324d of the fourth leg portion 324. The first wall portion 331 and the second wall portion 332 may extend in the Z direction such that the fourth end 331d of the first wall portion 331 and the fourth end 332d of the second wall portion 332 are positioned at the same position as the top surface 310d of the shell main body 310 in the Z-Z′ direction.

[0142] Shell 300 may further include a second connecting portion 360 (see FIG. 6C ) that connects first wall portion 331 and second wall portion 332 in the Z direction relative to mounting portion 230 of one or more terminals 200. This second connecting portion 360 is optional.

[0143] In addition, when the wall on the X-direction side and the wall on the X'-direction side of the internal space 311 of the shell body 310 are located on the X-direction side and the X'-direction side of the mounting portion 230 of one or more terminals 200, the first wall portion 331 can be configured as a part of the wall on the X-direction side of the internal space 311 of the shell body 310, rather than being configured to extend in the Y'-direction from the shell body 310, and the second wall portion 332 can also be configured as a part of the wall on the X'-direction side of the internal space 311 of the shell body 310, rather than being configured to extend in the Y'-direction from the shell body 310.

[0144] Similar to the shell 300 of the connector C1, one or more protrusions 340 may or may not be provided on the bottom surface 310c of the shell body 310 of the shell 300 of the connector C3'.

[0145] The connector C3' may or may not include the shield cover 400 and / or the ground terminal 500.

[0146] The connector C3' described above has the following technical features and effects.

[0147] Connector C3' has the same technical features and effects as the first technical feature and effect of connector C3. Furthermore, first wall portion 331 and second wall portion 332 of shell 300 of connector C3' extend in the Y' direction from shell body 310 and are disposed on the X and X' direction sides of mounting portion 230 of one or more terminals 200. When first wall portion 331 and second wall portion 332 are connected to ground during use, the ground strength of connector C3' is improved, and as a result, the EMI characteristics of connector C3' are improved.

[0148] The connector C3' has the same technical features and effects as the second and third technical features and effects of the connector C3.

[0149] "Concerning the connection structure S1 between a connector C1 and a circuit board B1 according to multiple embodiments including embodiment 1 and its design variations" A connection structure S1 according to a first embodiment of the present invention and a number of other embodiments, including design variations thereof, will be described below with reference to Figures 7A to 8B. Figures 7A to 7D show the connection structure S1 according to the first embodiment. Figures 8A and 8B show a circuit board B1 of the connection structure S1 according to the first embodiment.

[0150] 7A, 8A, and 8B show the Y-Y' direction, Z-Z' direction, and X-X' direction. 7B and 7C show the Y-Y' direction and Z-Z' direction. 7D shows the Y-Y' direction and X-X' direction. The Y-Y' direction, Z-Z' direction, and X-X' direction in the connection structure S1 correspond to the Y-Y' direction, Z-Z' direction, and X-X' direction in the description of the connector C1.

[0151] The connection structure S1 includes a circuit board B1 and the above-mentioned connector C1 mounted on the circuit board B1.

[0152] The circuit board B1 includes a substrate body 10. The substrate body 10 is a single-layer or multi-layer substrate. The substrate body 10 has a first end 10a on the Y-direction side, a second end 10b on the Y'-direction side, a back surface 10c on the Z'-direction side, and a front surface 10d on the Z-direction side.

[0153] The circuit board B1 further includes a first ground electrode GE1 having conductivity, a second ground electrode GE2 having conductivity, at least one signal electrode SE1 having conductivity, and at least one ground layer.

[0154] The first ground electrode GE1 and the second ground electrode GE2 are through-hole electrodes that are long in the Y-Y' direction and penetrate the board body 10 in the Z-Z' direction. The first ground electrode GE1 and the second ground electrode GE2 are open in both the Y and Y' directions. The first ground electrode GE1 and the second ground electrode GE2 are directly connected to at least one ground layer and have the same potential as at least one ground layer.

[0155] The shapes, sizes, and positions of the cross sections in the Y-Y' direction and the X-X' direction of the first ground electrode GE1 and the second ground electrode GE2 correspond to the outer shapes, sizes, and positions of the cross sections in the Y-Y' direction and the X-X' direction of the first leg 321 and the second leg 322. The distance between the first ground electrode GE1 and the second ground electrode GE2 in the X-X' direction corresponds to the distance between the first leg 321 of the connector C1 and the second leg 322 of the connector C1 in the X-X' direction.

[0156] The first ground electrode GE1 has a first end GE1a on the Y-direction side, and the second ground electrode GE2 has a first end GE2a on the Y-direction side. GE2a may be located at the same position in the Y-Y' direction (see FIGS. 8A and 8B), or either the first end GE1a of the first ground electrode GE1 or the first end GE2a of the second ground electrode GE2 may be located closer to the Y direction than the other (not shown).

[0157] The first leg 321 of the connector C1 is inserted into the first ground electrode GE1 and is electrically connected to the first ground electrode GE1. The second leg 322 of the connector C1 is inserted into the second ground electrode GE2 and is electrically connected to the second ground electrode GE2. This places the shell 300 of the connector C1 at the same potential as at least one ground layer of the circuit board B1.

[0158] The number of the at least one signal electrode SE1 is one or more depending on the number of the one or more terminals 200 of the connector C1. The one or more signal electrodes SE1 are surface electrodes provided in an area between the first ground electrode GE1 and the second ground electrode GE2 on the surface 10d of the substrate body 10, and are arranged depending on the positions of the mounting portions 230 of the one or more terminals 200.

[0159] The mounting portions 230 of one or more terminals 200 of the connector C1 are placed on and electrically connected to one or more signal electrodes SE1.

[0160] The at least one ground layer may include at least one of a first ground layer 20 having conductivity, a second ground layer 30 having conductivity, and at least one third ground layer 40 having conductivity.

[0161] The first ground layer 20 is provided on the surface 10d of the substrate body 10. The first ground layer 20 is not provided in the region between the first ground electrode GE1 and the second ground electrode GE2 on the surface 10d of the substrate body 10. The first ground layer 20 has a first end 20a on the Y direction side. The first ground layer 20 may extend in the Y direction beyond the first end GE1a of the first ground electrode GE1 and the first end GE2a of the second ground electrode GE2. In this case, the first end 20a of the first ground layer 20 is located on the Y direction side of the first end GE1a of the first ground electrode GE1 and the first end GE2a of the second ground electrode GE2. The first ground layer 20 may extend in the Y direction so that its first end 20a is located at the first end 10a of the substrate body 10.

[0162] The second ground layer 30 is provided on the back surface 10c of the substrate body 10. The second ground layer 30 has a first end 30a on the Y-direction side. The second ground layer 30 may extend in the Y-direction beyond the first end GE1a of the first ground electrode GE1 and the first end GE2a of the second ground electrode GE2. The first end 30a of the second ground layer 30 is located on the Y-direction side of the first end GE1a of the first ground electrode GE1 and the first end GE2a of the second ground electrode GE2. The second ground layer 30 may extend in the Y-direction so that its first end 30a is located at the first end 10a of the substrate body 10.

[0163] One or more third ground layers 40 are provided inside the substrate main body 10. The one or more third ground layers 40 have first ends 40a on the Y-direction side. The one or more third ground layers 40 may extend in the Y-direction beyond the first end GE1a of the first ground electrode GE1 and the first end GE2a of the second ground electrode GE2. The first ends 40a of the one or more third ground layers 40 are located on the Y-direction side of the first end GE1a of the first ground electrode GE1 and the first end GE2a of the second ground electrode GE2. The one or more third ground layers 40 may extend in the Y-direction such that their first ends 40a are located at the first end 10a of the substrate main body 10.

[0164] As described above, when at least one of the first ground layer 20, the second ground layer 30, and the at least one third ground layer 40 (at least one ground layer) extends in the Y-direction beyond the first end GE1a of the first ground electrode GE1 and the first end GE2a of the second ground electrode GE2, the linear distance in the Y-Y' direction from each of the first end GE1a of the first ground electrode GE1 and the first end GE2a of the second ground electrode GE2 to the first end 10a of the substrate main body 10 may be approximately 1 mm, or may be less than approximately 1 mm. Therefore, the end on the Y-direction side of at least one ground layer (at least one of the first end 20a of the first ground layer 20, the first end 30a of the second ground layer 30, and the first end 40a of one or more third ground layers 40) does not need to be located at approximately the same position as the first end 10a of the substrate main body 10 in the Y-Y' direction. At least one ground plane The distance in the YY' direction beyond the first end GE1a of the first ground electrode GE1 and the first end GE2a of the second ground electrode GE2 in the YY' direction can also be set to less than 1 mm.

[0165] When the at least one ground layer includes two or more layers selected from the first ground layer 20, the second ground layer 30, and at least one third ground layer 40, two adjacent layers in the Z-Z' direction among the two or more ground layers may be connected by one or more first bypass electrodes (not shown). This may cause the two or more ground layers to have the same potential. Note that one or more first bypass electrodes may be omitted.

[0166] The circuit board B1 may further include at least one signal line SL. The at least one signal line SL may be one or more, corresponding to the number of at least one signal electrode SE1. For ease of explanation, the at least one signal line SL will also be referred to as "one or each signal line SL." One signal line SL of the "one or each signal line SL" corresponds to one signal line SL when there is one signal line SL, and each signal line SL corresponds to each of the signal lines SL when there are multiple signal lines SL. Signal line SL is equivalent to

[0167] The one or each signal line SL is provided on any one of the front surface 10d of the substrate body 10, the back surface 10c of the substrate body 10, and the interior of the substrate body 10. When both the one or each signal line SL and the first ground layer 20 are provided on the front surface 10d of the substrate body 10, the first ground layer 20 is not provided in the area on the front surface 10d of the substrate body 10 where the one or each signal line SL is provided. When the one or each signal line SL and the second ground layer 30 are provided on the back surface 10c of the substrate body 10, the second ground layer 30 is not provided in the area on the back surface 10c of the substrate body 10 where the one or each signal line SL is provided. When the one or each signal line SL and the third ground layer 40 are provided on the same layer inside the substrate body 10, the third ground layer 40 is not provided in the area on the same layer inside the substrate body 10 where the one or each signal line SL is provided. The one or each signal line SL and at least one ground layer are spaced apart from each other so as not to contact each other.

[0168] One or each signal line SL is connected to a corresponding signal electrode SE1. One or each signal line SL may be directly connected to the corresponding signal electrode SE1, or may be indirectly connected via a through-hole electrode (not shown) or the like. One or each signal line SL may extend from the corresponding signal electrode SE1 in the Y′ direction (see FIGS. 7A, 7B, 7D, and 8A), but may be routed in any manner. When one or each signal line SL extends in the Y-Y′ direction, one or each signal line SL may extend to the second end 10b of the substrate body 10 (see FIGS. 7A, 7B, 7D, and 8A), or may not reach the second end 10b of the substrate body 10 (not shown).

[0169] When one or more signal lines SL are provided on the front surface 10d of the substrate body 10 and a second ground layer 30 or at least one third ground layer 40 is provided, the one or more signal lines SL and the second ground layer 30 or at least one third ground layer 40 can form a microstrip line. When one or more signal lines SL are provided on the back surface 10c of the substrate body 10 and a first ground layer 20 or at least one third ground layer 40 is provided, the one or more signal lines SL and the first ground layer 20 or at least one third ground layer 40 can form a microstrip line. When one or more signal lines SL are provided inside the substrate body 10 and a first ground layer 20 and a second ground layer 30 are provided, the one or more signal lines SL, the first ground layer 20, and the second ground layer 30 can form a stripline. When one or more signal lines SL and the first ground layer 20 are provided on the surface 10d of the substrate body 10, the one or more signal lines SL and the first ground layer 20 can form a coplanar line. One or moreWhen the signal line SL and the second ground layer 30 are provided on the back surface 10c of the substrate body 10, it is possible for one or more signal lines SL and the second ground layer 30 to form a coplanar line. When one or more signal lines SL and the third ground layer 40 are provided on the same layer inside the substrate body 10, it is possible for the one or more signal lines SL and the third ground layer 40 to form a coplanar line.

[0170] When one or more signal lines SL are provided on the front surface 10d of the substrate body 10, one or more terminals 200, one or more signal electrodes SE1, and one or more signal lines SL form one or more first high-speed signal transmission paths for transmitting high-speed signals (e.g., 12 Gbps signals). When one or more signal lines SL are provided on the back surface 10c of the substrate body 10 or inside the substrate body 10, one or more terminals 200, one or more signal electrodes SE1, one or more signal lines SL, and one or more second bypass electrodes (not shown) form one or more second high-speed signal transmission paths for transmitting high-speed signals (e.g., 12 Gbps signals). One or more second bypass electrodes connect one or more signal electrodes SE1 and one or more signal lines SL.

[0171] When the ground terminal 500 of the connector C1 is provided, the ground terminal 500, the shell body 310, the first leg 321 and the second leg 322, the first ground electrode GE1 and the second ground electrode GE2, and at least one ground layer form a first return path, which is a path through which the return current of the high-speed signal flows. When the ground terminal 500 is provided and at least one ground layer includes two or more layers as described above and adjacent two layers are connected by one or more first bypass electrodes, the ground terminal 500, the shell body 310, the first leg 321 and the second leg 322, the first ground electrode GE1 and the second ground electrode GE2, the two or more ground layers, and the one or more first bypass electrodes form a second return path, which is a path through which the return current of the high-speed signal flows.

[0172] When the ground terminal 500 of the connector C1 is not provided, the shell body 310, the first leg 321 and the second leg 322, the first ground electrode GE1 and the second ground electrode GE2, and at least one ground layer form a third return path, which is a path through which the return current of the high-speed signal flows. When the ground terminal 500 is not provided and the at least one ground layer includes two or more layers as described above, and two adjacent layers are connected by one or more first bypass electrodes, the shell body 310, the first leg 321 and the second leg 322, the first ground electrode GE1 and the second ground electrode GE2, the two or more ground layers, and the one or more first bypass electrodes form a fourth return path.

[0173] The circuit board B1 may further include an insulating resist (not shown). The resist is provided on the front surface 10d of the substrate body 10 so as to cover at least one or more signal electrodes SE1. If the first ground layer 20 and / or one or more signal lines SL are provided on the front surface 10d of the substrate body 10, the resist covers the first ground layer 20 and / or one or more signal lines SL. The resist has a first opening and a second opening. The first opening exposes at least a portion of the end face of the first ground electrode GE1 on the Z-direction side. The second opening exposes at least a portion of the end face of the second ground electrode GE2 on the Z-direction side. The first opening and the second opening may be separated from each other. The resist may also be provided on the back surface 10c of the substrate body 10. The resist is optional.

[0174] When one or more protrusions 340 are provided on the bottom surface 310c of the shell body 310 of the shell 300 of the connector C1, as described above, when the first leg portion 321 and the second leg portion 322 of the connector C1 are electrically connected to the first ground electrode GE1 and the second ground electrode GE2 of the circuit board B1 and the mounting portion 230 of one or more terminals 200 of the connector C1 is electrically connected to one or more signal electrodes SE1 of the circuit board B1, the tip 340c of the one or more protrusions 340 abuts against the circuit board B1. This creates a gap G between the bottom surface 310c of the shell body 310 and the circuit board B1. When one or more protrusions 340 are not provided, as described above, the bottom surface 310c of the shell body 310 is placed on the circuit board B1 in a state in which the first leg portion 321 of the connector C1 and the second leg portion 322 of the connector C1 are electrically connected to the first ground electrode GE1 of the circuit board B1 and the second ground electrode GE2 of the circuit board B1, and the mounting portion 230 of one or more terminals 200 of the connector C1 is electrically connected to one or more signal electrodes SE1 of the circuit board B1.

[0175] "About the counterpart connector CP" The configuration of the mating connector CP that can be inserted into and removed from the connector C1 of the connection structure S1 described above will be described below with reference to Fig. 9A. Fig. 9A shows the connection structure S1 of Example 1 and the mating connector CP connected to the connector C1 of the connection structure S1. Like Fig. 7B, Fig. 9A also shows the Y-Y' direction and the Z-Z' direction. Note that the Y-Y' direction also corresponds to the insertion and removal direction of the mating connector CP with respect to the connector C1.

[0176] The mating connector CP is a plug connector that can be inserted into the connector C1 of the connection structure S1 along the Y-Y' direction for connection and removed for disconnection. The mating connector CP includes a conductive cylindrical shield member 1, an inner body 2 made of insulating resin, at least one terminal 3, and a cable 4.

[0177] The shield member 1 is a cylinder (see FIG. 9A) or a polygonal tube (not shown) extending in the Y-Y' direction. When the connector C1 is equipped with the ground terminal 500, the outer dimensions of the cross sections of the shield member 1 in the X-X' and Z-Z' directions are larger than the outer dimensions of the cross sections of the space defined by the intermediate portions of the multiple contact springs 530 of the ground terminal 500 in the X-X' and Z-Z' directions and smaller than the inner dimensions of the cross sections of the first annular portion 510 in the X-X' and Z-Z' directions. When the ground terminal 500 is not provided, the cross-sectional outline of the shielding member 1 in the X-X' and Z-Z' directions corresponds to the cross-sectional shape of the central space 311o of the internal space 311 of the shell body 310 of the connector C1 in the X-X' and Z-Z' directions, and the cross-sectional outline size of the shielding member 1 in the X-X' and Z-Z' directions is approximately the same as the cross-sectional size of the central space 311o of the internal space 311 of the shell body 310 of the connector C1 in the X-X' and Z-Z' directions.

[0178] The number of the at least one terminal 3 may be one or more depending on the number of the at least one terminal 200 of the connector C1, but may be more or less than the number of the at least one terminal 200. The one or more terminals 3 have a tip portion, a middle portion, and a rear portion. The middle portion of the one or more terminals 3 is held within the inner body 2, and the one or more terminals 3 together with the inner body 2 are housed and held within the shield member 1. The rear portion of the at least one terminal 3 is located on the Y-direction side relative to the middle portion of the at least one terminal 3. The tip portion of the one or more terminals 3 is located on the Y'-direction side relative to the middle portion of the one or more terminals 3. When the number of the one or more terminals 3 is the same as the one or more terminals 200 of the connector C1, the tip portion of the one or more terminals 3 is capable of contacting the tip portion 220 of the corresponding terminal 200. The tip of one or more terminals 3 may have a female shape (e.g., a tube or a pair of arms extending in the Y-Y' direction) and the tip 220 of the corresponding terminal 200 may have a male shape (e.g., a rod or a plate), or vice versa. In this case, it is preferable that the male shape mates with the female shape. When the number of the multiple terminals 3 is greater than the number of the one or more terminals 200 of the connector C1, the tip of some of the multiple terminals 3 (one terminal 3 or a plurality of terminals 3 less than all the terminals 3) can come into contact with the tip 220 of the corresponding terminal 200, but the remaining terminals 3 (a plurality of terminals 3 less than all the terminals 3 or one terminal 3) do not come into contact with the one or more terminals 200 of the connector C1. When the number of one or more terminals 3 is less than the number of one or more terminals 200 of the connector C1, the tip of one or more terminals 3 can come into contact with the tip of some of the terminals 200 of the connector C1 (one or more terminals 200 that are less than all terminals 200), but the remaining terminals 200 of the connector C1 do not come into contact with the tip of the multiple terminals 3.

[0179] The cable 4 has at least one inner conductor 4a, at least one inner insulator 4b, an outer conductor 4c, and an outer insulator 4d. The number of the at least one inner conductor 4a may be one or more depending on the number of the at least one terminal 3, but may be more or less than the number of the at least one terminal 3. When the number of the at least one inner conductor 4a is the same as the number of the at least one terminal 3, One or The tips of the multiple internal conductors 4a are connected to the rear ends of the corresponding terminals 3. When the number of the multiple internal conductors 4a is greater than the number of the one or more terminals 3, the tips of some of the multiple internal conductors 4a (one internal conductor 4a or all of the multiple internal conductors 4a less than the number of the terminals 3) are connected to the rear ends of the corresponding terminals 3, but the remaining internal conductors 4a (all of the multiple internal conductors 4a less than the number of the terminals 3 or one internal conductor 4a) are not connected to the one or more terminals 3. When the number of the one or more internal conductors 4a is less than the number of the terminals 3, the tips of the one or more internal conductors 4a are connected to the rear ends of some of the multiple terminals 3 (one or more terminals 3 less than all of the terminals 3), but the remaining internal conductors 4a are not connected to the tips of the multiple terminals 3. The at least one internal insulator 4b is one or more, depending on the number of the at least one internal conductor 4a, and is a substantially cylindrical body made of an insulating material that covers the outer periphery of the corresponding internal conductor 4a except for its tip. The outer conductor 4c is a substantially cylindrical body made of a conductive material and covers one or more internal insulators 4b. The tip ends of one or more internal conductors 4a, the tip ends of one or more internal insulators 4b, and the tip end of the outer conductor 4c are disposed within the shielding member 1, and the tip end of the outer conductor 4c is fitted onto and connected to the shielding member 1. The outer insulator 4d is a substantially cylindrical body made of an insulating material and covers the entire outer conductor 4c except for its tip end. Note that only a portion of the cable 4 is shown in FIG. 9A.

[0180] The mating connector CP may further include a housing 5 made of insulating resin. The housing 5 is provided around the shielding member 1 except for its tip. In other words, the tip of the shielding member 1 protrudes from the housing 5. If the shell body 310 of the connector C1 has a first space 311a, the tip of the housing 5 can be configured to fit into the first space 311a. If multiple key grooves are provided on the inner peripheral surface of the first space 311a, the housing 5 may be provided with multiple key portions corresponding to the multiple key grooves. If lock holes are provided on the inner peripheral surface of the first space 311a, the housing 5 may be provided with lock arms corresponding to the lock holes.

[0181] The tip of the shield member 1 of the mating connector CP is inserted into the internal space 311 of the shell body 310 of the shell 300 of the connector C1 from the Y direction. If the connector C1 is provided with a ground terminal 500, the tip of the shield member 1 of the mating connector CP is inserted into the central space 311o within the shell body 310 of the connector C1, and the intermediate portions of the multiple contact springs 530 of the ground terminal 500 elastically contact the tip of the shield member 1 at approximately equal intervals. At the same time, the tip of at least one terminal 3 of the mating connector CP contacts the tip 220 of at least one terminal 200 of the connector C1. In this way, the shield member 1 of the mating connector CP and the shell 300 of the connector C1 are electrically connected via the ground terminal 500, and the tip of at least one terminal 3 of the mating connector CP is electrically connected to the tip 220 of at least one terminal 200 of the connector C1, thereby electrically connecting the connector C1 to the mating connector CP.

[0182] If the ground terminal 500 of the connector C1 is not provided, the tip of the shield member 1 of the mating connector CP fits into the central space 311o in the shell body 310 of the connector C1, and the tip of at least one terminal 3 of the mating connector CP comes into contact with the tip 220 of at least one terminal 200 of the connector C1. In this way, the shield member 1 of the mating connector CP and the shell 300 of the connector C1 are electrically connected, and the tip of at least one terminal 3 of the mating connector CP is electrically connected to the tip 220 of at least one terminal 200 of the connector C1, thereby electrically connecting the connector C1 to the mating connector CP.

[0183] When the connector C1 of the connection structure S1 is connected to the mating connector CP in any of the above-described ways, the at least one first high-speed signal transmission path or the at least one second high-speed signal transmission path, the at least one terminal 3 of the mating connector CP, and the at least one internal conductor 4a of the mating connector CP form at least one signal transmission path (hereinafter referred to as "third high-speed signal transmission path") for transmitting high-speed signals, while the first, second, third, or fourth return path, the shielding member 1 of the mating connector CP, and the external conductor 4c of the mating connector CP form a path through which a return current of the high-speed signal flows. ( Hereinafter, this will be referred to as the "5th return path." ) To do.

[0184] 9A, a portion 221 from the contact point between one terminal 200 of connector C1 and one terminal 3 of the mating connector CP to the first end 220a forms an open stub branched off from the third high-speed signal transmission line for transmitting high-speed signals. If there are multiple terminals 200 of connector C1 and multiple terminals 3 of the mating connector CP, there will be multiple open stubs 221 branched off from each of the multiple third high-speed signal transmission lines.

[0185] Here, the first and second simulations were performed as follows: The following conditions for the first simulation were set for the EM simulator (ANSYS HFSS manufactured by ANSYS, Inc.) used in the first simulation.

[0186] [Conditions for the first simulation] The information used was modeled using an EM simulator on the connection structure S1 of Example 1 and the mating connector CP connected to the connector C1 of this connection structure S1. The configurations of the connection structure S1 and the mating connector CP are as shown in Figure 9A.

[0187] 1A to 1E and 7A to 7D, the connector C1 of the connection structure S1 includes one body 100, one terminal 200, one shell 300, one shield cover 400, and one ground terminal 500. The first leg 321 and the second leg 322 of the shell 300 are disposed in line-symmetrical positions with respect to the first imaginary line CL1, and have line-symmetrical shapes with respect to the first imaginary line CL1. The first end 321a of the first leg 321 and the first end 322a of the second leg 322 are located on the Y'-direction side with respect to the first end 220a of the tip portion 220 of the terminal 200, and the second end 321b of the first leg 321 and the second end 322b of the second leg 322 are located on the Y'-direction side with respect to the second end 230b of the mounting portion 230 of the terminal 200. A third end 321c of the first leg 321 and a third end 322c of the second leg 322 are located on the Z'-direction side of a third end 230c of the mounting portion 230 of the terminal 200, and a fourth end 321d of the first leg 321 and a fourth end 322d of the second leg 322 are located on the Z-direction side of a fourth end 230d of the mounting portion 230 of the terminal 200. A single protrusion 340 is provided on the bottom surface 310c of the shell 300 of the connector C1. The protrusion 340 abuts against the circuit board B1, and a gap G is generated between the bottom surface 310c and the circuit board B1.

[0188] The circuit board B1 of the connection structure S1 has the configuration shown in Figures 7A to 8B and is a so-called four-layer board. The circuit board B1 includes one board body 10, one signal electrode SE1, one signal line SL, one first ground layer 20, one second ground layer 30, two third ground layers 40, one first ground electrode GE1, and one second ground electrode GE2. The board body 10 is configured by stacking three insulating layers in the Z-Z' direction.

[0189] As shown in FIG. 8A , the first ground layer 20 is provided on the entire surface 10d of the substrate body 10, excluding a generally rectangular central region. This generally rectangular region extends to the second end 10b of the substrate body 10. A signal electrode SE1, which is a surface electrode, is provided on the generally rectangular region of the surface 10d of the substrate body 10. A mounting portion 230 of a terminal 200 of the connector C1 is placed on the signal electrode SE1 and soldered to it. A signal line SL is further provided on the generally rectangular region of the surface 10d of the substrate body 10, and extends from the signal electrode SE1 to the second end 10b of the substrate body 10. As shown in FIG. 8B , the second ground layer 30 is provided on the entire back surface 10c of the substrate body 10. Two third ground layers 40 are provided on the entire surfaces of the central insulating layer, one of the three insulating layers of the substrate body 10, on the Z-direction side and the other on the Z'-direction side, and have generally the same shape as the second ground layer 30. The first end 20a of the first ground layer 20, the first end 30a of the second ground layer 30, and the first ends 40a of the two third ground layers 40 are located in the Y direction relative to the first ground electrode GE1 and the second ground electrode GE2, and are set at the same positions in the Y-Y' direction as the first end 10a of the substrate main body 10. The linear distance in the Y-Y' direction from the first end GE1a of the first ground electrode GE1 and the first end GE2a of the second ground electrode GE2 to the first end 10a of the substrate main body 10 is approximately 1 mm. Therefore, the first ground layer 20, the second ground layer 30, and the two third ground layers 40 each have an open stub whose dimension in the Y-Y' direction from the first end GE1a of the first ground electrode GE1 and the first end GE2a of the second ground electrode GE2 to the first end 10a of the substrate main body 10 is approximately 1 mm.

[0190] The cross-sectional shapes, sizes, and positions of the first ground electrode GE1 and the second ground electrode GE2 in the Y-Y' and X-X' directions correspond to the cross-sectional shapes, sizes, and positions of the first leg 321 and the second leg 322 of the connector C1 in the Y-Y' and X-X' directions. The first leg 321 and the second leg 322 of the connector C1 are inserted into the first ground electrode GE1 and the second ground electrode GE2 and connected by soldering. The first ground electrode GE1 and the second ground electrode GE2 are connected to the first ground layer 20, the second ground layer 30, and the two third ground layers 40.

[0191] 9A, the mating connector CP of the connector C1 includes one shield member 1, one inner body 2, one terminal 3, one cable 4, and one housing 5. The cable 4 includes one inner conductor 4a, one inner insulator 4b, one outer conductor 4c, and one outer insulator 4d.

[0192] The signal input port IN1 in the first simulation is set to the Y'-direction end of the signal line SL of the circuit board B1 of the connection structure S1. The signal output port OUT1 in the first simulation is set to the Y'-direction end of the inner conductor 4a of the cable 4 of the counterpart connector CP. transmission The speed is set to 12Gbps.

[0193] The following conditions for the second simulation were set for the EM simulator (ANSYS HFSS manufactured by ANSYS, Inc.) used in the second simulation.

[0194] [Conditions for the second simulation] Information was used that was modeled using an EM simulator on the connection structure SC1 of Comparative Example 1 and the mating connector CP connected to the connector CC1 of this connection structure SC1. The configurations of the connection structure SC1 of Comparative Example 1 and the mating connector CP are as shown in Figure 9B.

[0195] 9B, the connector CC1 of the connection structure SC1 has the same configuration as the connector C1 of the connection structure S1 of Example 1, except that a first front leg 371F, a second front leg 371F, a first rear leg 372R, and a second rear leg 372R are provided on the bottom surface 310c of the shell body 310 instead of the first leg 321 and the second leg 322. Therefore, the reference numerals of the components of the connector CC1 other than the first front leg 371F, the second front leg 371F, the first rear leg 372R, and the second rear leg 372R are assigned the same reference numerals as the corresponding components of the connector C1 of the connection structure S1 of Example 1, and descriptions thereof will be omitted. In Figure 9B, the first front leg 371F and the first rear leg 372R are not shown, so the first front leg 371F will be referred to by the second front leg 371F shown in Figure 9B, and the first rear leg 372R will be referred to by the second rear leg 372R shown in Figure 9B.

[0196] The first front leg 371F, the first rear leg 372R, the second front leg 371F, and the second rear leg 372R are approximately cylindrical extending in the Z' direction from the bottom surface 310c of the shell main body 310, and each has a diameter approximately the same as the dimension in the X-X' direction of the first leg 321 of the connector C1.

[0197] The first front leg 371F and the second front leg 371F are arranged at an interval in the X-X' direction. The first rear leg 372R and the second rear leg 372R are arranged at an interval in the X-X' direction. The interval in the X-X' direction between the first front leg 371F and the second front leg 371F and the interval in the X-X' direction between the first rear leg 372R and the second rear leg 372R are each approximately the same as the interval in the X-X' direction between the first leg 321 and the second leg 322 of the connector C1.

[0198] The first front leg 371F and the first rear leg 372R are arranged with a gap in the Y-Y' direction. The second front leg 371F and the second rear leg 372R are arranged with a gap in the Y-Y' direction. The Y-direction end of the first front leg 371F and the Y-direction end of the second front leg 371F are located at the same positions in the Y-Y' direction as the first end 321a of the first leg 321 and the first end 322a of the second leg 322 of the connector C1 of Example 1, and are located on the Y-direction side of the first end 220a of the tip portion 220 of the terminal 200. The Y'-direction end of the first front leg 371F and the Y'-direction end of the second front leg 371F are located at the same positions in the Y-Y' direction as the first end 321a of the first leg 321 and the first end 322a of the second leg 322 of the connector C1 of Example 1, and are located on the Y-direction side of the first end 220a of the tip portion 220 of the terminal 200. Terminal 200 The first rear leg 372R is positioned slightly to the Y' direction side with respect to the first end 220a of the tip portion 220. The Y direction end of the first rear leg 372R and the Y direction end of the second rear leg 372R are Terminal 200 The Y'-direction end of the first rear leg 372R and the Y'-direction end of the second rear leg 372R are located on the Y-Y' direction side with respect to the first end 230a of the mounting portion 230. Terminal 200 The second end 210b of the main body 210 is located at substantially the same position as the second end 210b of the main body 210.

[0199] The circuit board BC1 of the connection structure SC1 has the same configuration as the circuit board B1 of the connection structure S1 of Example 1, except that a first front ground electrode GEF, a second front ground electrode GEF, a first rear ground electrode GER, and a second rear ground electrode GER are provided instead of the first ground electrodes GE1 and the second ground electrodes GE2. Therefore, the components of the circuit board BC1 other than the first front ground electrode GEF, the second front ground electrode GEF, the first rear ground electrode GER, and the second rear ground electrode GER are denoted by the same reference numerals as the corresponding components of the circuit board B1 of the connection structure S1 of Example 1, and their descriptions will be omitted. Because the first front ground electrode GEF and the first rear ground electrode GER are not shown in FIG. 9B , the first front ground electrode GEF will be referred to by the second front ground electrode GEF shown in FIG. 9B , and the first rear ground electrode GER will be referred to by the second rear ground electrode GER shown in FIG. 9B .

[0200] The first front ground electrode GEF, the second front ground electrode GEF, the first rear ground electrode GER, and the second rear ground electrode GER are through-hole electrodes that penetrate the circuit board BC1 in the Z-Z' direction, and their diameters correspond to the diameters of the first front leg 371F, the second front leg 371F, the first rear leg 372R, and the second rear leg 372R of the connector CC1 and are approximately the same as the dimension in the X-X' direction of the first ground electrode GE1 of the circuit board B1 of Example 1.

[0201] The positions of the first front ground electrode GEF, the second front ground electrode GEF, the first rear ground electrode GER, and the second rear ground electrode GER correspond to the positions of the first front leg 371F, the second front leg 371F, the first rear leg 372R, and the second rear leg 372R. The distance in the X-X' direction between the first front ground electrode GEF and the second front ground electrode GEF and the distance in the X-X' direction between the first rear ground electrode GER and the second rear ground electrode GER are respectively the distance between the first ground electrode GE1 and the second ground electrode GE2 of the circuit board B1 of the first embodiment. and It's the same.

[0202]

[0203] The linear distance in the Y-Y' direction from the Y-direction end of the first front ground electrode GEF and the Y-direction end of the second front ground electrode GEF to the first end 10a of the substrate main body 10 of the circuit board BC1 is approximately 2.5 mm. The first ground layer 20, the second ground layer 30, and the two third ground layers 40 each have an open stub whose dimension in the Y-Y' direction from the Y-direction end of the first front ground electrode GEF and the Y-direction end of the second front ground electrode GEF to the first end 10a of the substrate main body 10 is approximately 2.5 mm.

[0204] The first front ground electrode GEF, the second front ground electrode GEF, the first rear ground electrode GER, and the second rear ground electrode GER are connected to the first ground layer 20, the second ground layer 30, and the two third ground layers 40.

[0205] The connector CC1 has the first front leg 371F of the shell 300 inserted into the first front ground electrode GEF, the second front leg 371F inserted into the second front ground electrode GEF, the first rear leg 372R inserted into the first rear ground electrode GER, and the second rear leg 372R inserted into the second rear ground electrode GER and soldered together.

[0206] The mating connector CP has the same configuration as that used in the first simulation.

[0207] In the second simulation, the signal input port IN2 is set to the Y'-direction end of the signal line SL of the circuit board BC1 of the connection structure SC1. The signal output port OUT2 is set to the Y-direction end of the inner conductor 4a of the cable 4 of the mating connector CP. The transmission speed of the signal input from the input port IN2 is set to 12 Gbps.

[0208] An electric field strength analysis (first simulation) was performed using an EM simulator under the conditions of the first simulation, and an electric field strength analysis (second simulation) was performed using an EM simulator under the conditions of the second simulation.

[0209] [Results of the first and second simulations] The results of the electric field strength analysis of the first simulation are shown in Fig. 10A, and the results of the electric field strength analysis of the second simulation are shown in Fig. 10B. Below, the results of the first simulation and the results of the second simulation will be compared with each other, with reference to Fig. 10A and Fig. 10B.

[0210] [Comparison between the results of the first and second simulations] The results of the electric field strength analysis of the second simulation showed that electric field leakage was observed in the areas indicated by arrows LE1, LE2, and LE3 near the edge-shaped portions of the shell body 310 of the connector CC1. The reason for this is as follows: Although the first front leg 371F and the second front leg 371F of the shell 300 of the connector CC1 are arranged on both sides of the first end 220a of the tip portion 220 of the terminal 200 and the first rear leg 372R and the second rear leg 372R are arranged on both sides of the Y-direction side portion of the mounting portion 230 of the terminal 200, the first front leg 371F, the first rear leg 372R, and the second rear leg 372R of the connector CC1 are cylindrical and connected to the first ground layer 20, the second ground layer 30, and the two third ground layers 40 of the circuit board BC1, respectively, and therefore the ground strength of the connection structure SC1 is weak. Therefore, reflection of a high-speed signal occurs in at least one of the following (hereinafter referred to as "at least one reflection-causing portion"): a portion where the shape of the terminal 200 of the connector CC1 changes; a connection portion between the mounting portion 230 of the terminal 200 and the signal electrode SE1 of the circuit board BC1; a contact point between the terminal 200 of the connector CC1 and the terminal 3 of the mating connector CP; and a portion 221 (open stub) from the contact point to the first end 220a of the tip portion 220 of the terminal 200. When noise is radiated from the four reflection portions to shell body 310, the edge-shaped portions of shell body 310 function as antennas, causing the noise to be re-radiated from the edge-shaped portions to the outside of shell body 310 before it flows from at least one of first front leg 371F, second front leg 371F, first rear leg 372R, and second rear leg 372R of shell body 310 to first ground layer 20, second ground layer 30, and two third ground layers 40 of circuit board BC1. This is thought to be the cause of the electric field leakage in areas LE1, LE2, and LE3.

[0211] Furthermore, the results of the electric field strength analysis of the second simulation also show that there is leakage of the electric field in the area indicated by the arrow LE4 between the shell body 310 of the connector CC1 and the circuit board BC1. The reason for this is as follows: the first ground layer 20, the second ground layer 30, and the third ground layer 40 have open stubs of approximately 2.5 mm in the vicinity of the area LE4. The open stubs of the first ground layer 20, the second ground layer 30, and the third ground layer 40 act as antennas. function As a result, noise that flows through the first ground layer 20, the second ground layer 30, and the third ground layer 40 is re-radiated from the open stubs or lost as Joule heat before flowing from the first ground layer 20, the second ground layer 30, and the third ground layer 40 to the chassis earth or the like. This is thought to be the cause of the electric field leakage in area LE4.

[0212] Furthermore, the results of the electric field strength analysis of the second simulation show that there is also electric field leakage in the area indicated by the arrow LE5 between the shell body 310 of the connector CC1 and the circuit board BC1. The reason for this is as follows. Protrusion 340 creates gap G between bottom surface 310c of shell body 310 and circuit board BC1, and cylindrical first front leg 371F and first rear leg 372R of shell 300 of connector CC1 are arranged at a distance in the Y-Y' direction, and cylindrical second front leg 371F and second rear leg 372R of shell 300 of connector CC1 are arranged at a distance in the Y-Y' direction. Therefore, on the Z' direction side of bottom surface 310c of shell body 310, there are areas where no legs exist between first front leg 371F and first rear leg 372R and between second front leg 371F and second rear leg 372R. This reduces the shielding effect of connector CC1, and prevents terminal 200 from contacting the connector CC1. transmission Noise superimposed on the high-speed signal being transmitted is directly radiated from the terminal 200 to the outside of the connector CC1, which is thought to be the cause of the electric field leakage in the area LE5.

[0213] On the other hand, the results of the electric field intensity analysis of the first simulation show that there is almost no electric field leakage in areas LE1 and LE2. Although electric field leakage in area LE3 is observed, it is seen to be reduced compared to the electric field leakage in area LE3 in the results of the electric field intensity analysis of the second simulation. The reason for this is as follows: the first leg 321 and the second leg 322 are arranged on the X and X' direction sides of the terminal 200 such that the first end 321a of the first leg 321 and the first end 322a of the second leg 322 are located on the Y' direction side of the first end 220a of the tip portion 220 of the terminal 200, and the second end 321b of the first leg 321 and the second end 322b of the second leg 322 are located on the Y' direction side of the second end 230b of the mounting portion 230 of the terminal 200. In other words, over the entire length of terminal 200 in the Y-Y' direction, the distances in the X-X' direction from terminal 200 to first leg 321 and second leg 322 are approximately the same, and first leg 321 and second leg 322 are located near terminal 200. This makes the ground strength of connection structure S1 stronger than the ground strength of connection structure SC1. Therefore, even if high-speed signal reflection occurs at at least one (at least one reflection portion) such as a portion where the shape of terminal 200 of connector C1 changes, a connection portion between mounting portion 230 of terminal 200 and circuit board B1, a contact point between terminal 200 of connector C1 and terminal 3 of mating connector CP, and portion 221 (open stub) from that contact point to first end 220a of tip portion 220 of terminal 200, and the resulting reflected noise is radiated from at least one reflection portion to shell body 310, the noise is likely to flow from first leg portion 321 and / or second leg portion 322 of shell body 310 to at least one of first ground layer 20, second ground layer 30, and two third ground layers 40 of circuit board BC1. Therefore, it is considered that noise is less likely to be re-radiated to the outside from the edge-shaped portion of shell body 310.

[0214] Furthermore, the results of the electric field intensity analysis of the first simulation showed that there was almost no electric field leakage in area LE4. The reason for this is as follows: The first ground layer 20, the second ground layer 30, and the third ground layer 40 of the circuit board B1 each have open stubs of approximately 1 mm near area LE4. However, the dimensions in the Y-Y' direction of the open stubs of the first ground layer 20, the second ground layer 30, and the third ground layer 40 of the circuit board B1 are approximately 1.5 mm shorter than the dimensions in the Y-Y' direction of the open stubs of the first ground layer 20, the second ground layer 30, and the third ground layer 40 of the circuit board BC1 of Comparative Example 1. This weakens the antenna function of the open stubs of the first ground layer 20, the second ground layer 30, and the third ground layer 40 of the circuit board B1, which is thought to suppress noise re-radiation from the open stubs.

[0215] Furthermore, the results of the electric field strength analysis of the first simulation show that there is almost no leakage of the electric field in area LE5. The reason for this is as follows: In connector C1, protrusion 340 causes gap G between bottom surface 310c of shell body 310 and circuit board BC1, but bottom surface 310c of shell body 310 of connector C1 is provided with first leg portion 321 and second leg portion 322 that are elongated in the Y-Y' direction. Comparative Example 1 As in the connector CC1, there is no area where there are no legs between the first front leg 371F and the first rear leg 372R and between the second front leg 371F and the second rear leg 372R on the Z' direction side of the bottom surface 310c of the shell body 310. Therefore, the shielding effect of the connector C1 is improved, and the terminals 200 transmission It is believed that this prevents noise superimposed on the high-speed signal from radiating directly from the terminal 200 to the outside of the connector C1.

[0216] The above-described connection structure S1 has the following technical features and effects.

[0217] (First technical feature and effect) The EMI characteristics of the connection structure S1 can be improved for the following reasons. As described in the first technical feature and effect of the connector C1, the distance from the first leg 321 and the second leg 322 of the shell 300 of the connector C1 to one or more terminals 200 is short, and the cross-sectional areas of the first leg 321 and the second leg 322 in the Y-Y' direction and the Z-Z' direction, respectively, are larger than the corresponding cross-sectional areas of the front leg and the rear leg of a conventional connector. The first leg 321 and the second leg 322 are connected to at least one ground layer of the circuit board B1 via the first ground electrode GE1 and the second ground electrode GE2 of the circuit board B1, thereby improving the ground strength of the connection structure S1. Therefore, even if a high-speed signal transmitted by one or more terminals 200 is reflected on one or more terminals 200, and noise is generated by the reflection of the high-speed signal and radiated to the shell body 310 of the shell 300, the noise is likely to flow from the first leg 321 and / or the second leg 322 of the connector C1 to at least one ground layer of the circuit board B1 via the first ground electrode GE1 and / or the second ground electrode GE2 of the circuit board B1. Therefore, it is possible to reduce the possibility of the noise radiated to the shell body 310 of the shell 300 being re-radiated from the edge-shaped portion of the shell body 310 before it flows from the first leg 321 and / or the second leg 322 of the connector C1 to at least one ground layer of the circuit board B1 via the first ground electrode GE1 and / or the second ground electrode GE2 of the circuit board B1. In particular, when the first end 321a of the first leg 321 and the first end 322a of the second leg 322 are located on the Y-direction side with respect to the first end 220a of the tip portion 220 of one or more terminals 200, and the second end 321b of the first leg 321 and the second end 322b of the second leg 322 are located on the Y'-direction side with respect to the second end 230b of the mounting portion 230 of one or more terminals 200, 321Since the second leg portion 322 is arranged on the X-direction side and X'-direction side of the one or more terminals 200 over the entire length of the one or more terminals 200 in the Y-Y' direction, even if a high-speed signal is reflected at the one or more terminals 200 and noise is generated by the reflection of the high-speed signal and radiated to the shell body 310, the noise is more likely to flow from the first leg portion 321 and / or the second leg portion 322 of the shell body 310 to at least one ground layer of the circuit board B1 via the first ground electrode GE1 and / or the second ground electrode GE2 of the circuit board B1, and as a result, the possibility of noise being re-radiated from the edge-shaped portion of the shell body 310 is further suppressed.

[0218] (Second technical features and effects) The EMC characteristics of the connection structure S1 can be improved. The reason is as follows. As described in the second technical feature and effect of the connector C1, the impedance of the first leg 321 and the second leg 322 of the connector C1 is reduced, thereby strengthening the ground of the connection structure S1. This improves the EMC characteristics of the connection structure S1. Furthermore, if at least one ground layer of the circuit board B1 has multiple ground layers (all ground layers or a plurality of ground layers less than all ground layers) and the multiple ground layers are connected to the first ground electrode GE1 and the second ground electrode GE2 of the circuit board B1, the first leg 321 and the second leg 322 are connected to the multiple ground layers of the circuit board B1 via the first ground electrode GE1 and the second ground electrode GE2. This also strengthens the ground of the connection structure S1.

[0219] (Third Technical Features and Effects) When the shield cover 400 of the connector C1 closes the internal space 311 of the cylindrical shell body 310 of the shell 300 from the Y' direction side, the possibility that the impedance of the second end 210b of the body portion 210 of the at least one terminal 200 in the first high-speed signal transmission line or the second high-speed signal transmission line will become high can be reduced by adjusting the distance in the Y-Y' direction between the cover portion 410 of the shield cover 400 and the second end 210b of the body portion 210 of the at least one terminal 200. This also improves the EMI characteristics of the connector C1.

[0220] (Fourth Technical Features and Effects) If at least one ground layer of the circuit board B1 extends in the Y direction beyond the first end GE1a of the first ground electrode GE1 and the first end GE2a of the second ground electrode GE2, the portion of the at least one ground layer of the circuit board B1 beyond the first end GE1a of the first ground electrode GE1 and the first end GE2a of the second ground electrode GE2 forms an open stub branching from the first, second, third, or fourth return path, and the open stub may function as an antenna and radiate noise. However, if the linear distance in the Y-Y′ direction from each of the first end GE1a of the first ground electrode GE1 and the first end GE2a of the second ground electrode GE2 to the first end 10a of the board main body 10 is approximately 1 mm, the open stub is less likely to function as an antenna, thereby suppressing noise generation from the open stub. This also improves the EMI characteristics of the connection structure S1.

[0221] (5th Technical Features and Effects) When at least one protrusion 340 is provided on the bottom surface 310c of the shell 300 of the connector C1, the connector C1 can be mounted on the circuit board B1 by a through-hole reflow process. The reason for this is as follows: Because the tip 340c of the at least one protrusion 340 abuts against the circuit board B1, a gap G is formed between the bottom surface 310c of the shell body 310 of the shell 300 and the circuit board B1. Therefore, by soldering the first leg 321 and the first ground electrode GE1 by a through-hole reflow process, a fillet can be formed around the first leg 321 of the connector C1 in the gap G, and by soldering the second leg 322 and the second ground electrode GE2 by a through-hole reflow process, a solder fillet can be formed around the second leg 322 of the connector C1 in the gap G. Furthermore, the first leg 321 and second leg 322 of connector C1 are elongated protrusions extending in the Y-Y' direction and are disposed on the X and X' sides of gap G, thereby providing electromagnetic shielding over a wider area on the X and X' sides of gap G than the cylindrical front and rear legs of conventional connectors. This also improves the EMC characteristics of connection structure S1.

[0222] (6th Technical Features and Effects) When the tip 220 of at least one terminal 200 of the connector C1 is male and the tip 220 of at least one terminal 3 of the mating connector CP is female, when the mating connector CP is mated with the connector C1 and the tip 220 of at least one terminal 200 of the connector C1 is mated with the tip 220 of at least one terminal 3 of the mating connector CP, the tip 220 of at least one terminal 3 of the mating connector CP is positioned outward relative to the tip 220 of at least one terminal 200. This means that the tip 220 of at least one terminal 3 is closer to the shield member 1 of the mating connector CP than the tip 220 of at least one terminal 200. This results in an impedance mismatch at the portion where the tip 220 of at least one terminal 200 of the connector C1 is mated with the tip 220 of at least one terminal 3 of the mating connector CP and / or at portions before and after the portion in the Y-Y′ direction. If this impedance mismatch is large, high-speed signals are reflected, resulting in reflected noise. However, if the dimension of at least one tip portion 220 in the Z-Z' direction is smaller than the dimension of the first portion of the main body portion 210 in the Z-Z' direction, the aforementioned impedance mismatch occurs. but As a result, the generation of noise can be suppressed, which also improves the EMI characteristics of the connection structure S1.

[0223] (7th Technical Features and Effects) When a resist is provided on the surface 10d of the circuit board B1 and the first and second openings of the resist are separated from each other, the first and second openings of the metal mask for applying solder paste used in the through-hole reflow method are also located at the first and second openings of the resist. TogetherThe connectors C1 and C2 can be separated from each other. This makes it difficult for solder paste to flow from the first opening to the second opening of the resist or vice versa when soldering the first leg portion 321 of the connector C1 to the first ground electrode GE1 of the circuit board B1 and the second leg portion 322 of the connector C1 to the second ground electrode GE2 of the circuit board B1 using the through-hole reflow method, as described above. This reduces the possibility that a solder fillet will be formed only at the first joint between the first leg portion 321 of the connector C1 and the first ground electrode GE1 of the circuit board B1 or the second joint between the second leg portion 322 of the connector C1 and the second ground electrode GE2 of the circuit board B1, or that the amount of solder fillet will be insufficient at either the first joint or the second joint. In other words, solder fillets that maintain a good connection can be formed at both the first joint and the second joint, thereby stabilizing the EMI characteristics of the connection structure S1.

[0224] "Regarding the connection structure S1' between a connector C1' and a circuit board B1 according to multiple embodiments including embodiment 2 and its design variations" A connection structure S1' according to a second embodiment of the present invention and a number of other embodiments including design variations thereof will be described below with reference to Figures 11A and 11B. Figures 11A and 11B show the connection structure S1' according to the second embodiment.

[0225] Figure 11A shows the Y-Y' direction and the Z-Z' direction. Figure 11B shows the Y-Y' direction and the X-X' direction. The Y-Y' direction, Z-Z' direction, and X-X' direction in the connection structure S1' correspond to the Y-Y' direction, Z-Z' direction, and X-X' direction in the above description of the connector C1'.

[0226] The connection structure S1' has the same configuration as the connection structure S1, except that a connector C1' is mounted on the circuit board B1 instead of the connector C1. This difference will be explained in detail below, and any explanation of the connection structure S1' that overlaps with the explanation of the connection structure S1 will be omitted.

[0227] The circuit board B1 may further include a third ground electrode GE3 and a fourth ground electrode GE4. When a first ground layer 20 is provided on the front surface 10d of the circuit board B1 (see FIG. 11B), the third ground electrode GE3 and the fourth ground electrode GE4 are surface electrodes formed of part of the first ground layer 20. When the first ground layer 20 is not provided on the front surface 10d of the circuit board B1 (not shown), the third ground electrode GE3 and the fourth ground electrode GE4 are surface electrodes on the front surface 10d of the circuit board B1. In this case, the third ground electrode GE3 and the fourth ground electrode GE4 are connected to at least one ground layer by a third bypass electrode (not shown) and are at the same potential as at least one ground layer.

[0228] When the first leg 321 is disposed on the X-direction side of the first wall 331 of the connector C1' and the second leg 322 is disposed on the X'-direction side of the second wall 332 of the connector C1', the third ground electrode GE3 of the circuit board B1 is disposed between one or more signal electrodes SE1 of the circuit board B1 and the first ground electrode GE1 of the circuit board B1, and the fourth ground electrode GE4 of the circuit board B1 is disposed between one or more signal electrodes SE1 of the circuit board B1 and the second ground electrode GE2 of the circuit board B1. When the first leg 321 is not disposed on the X-direction side of the first wall 331 of the connector C1' and the second leg 322 is not disposed on the X'-direction side of the second wall 332 of the connector C1', the third ground electrode GE3 of the circuit board B1 is disposed on the X-direction side of the one or more signal electrodes SE1 of the circuit board B1, and the fourth ground electrode GE4 of the circuit board B1 is disposed on the X-direction side of the one or more signal electrodes SE1 of the circuit board B1. X' direction side The distance in the X-X' direction between the third ground electrode GE3 and the fourth ground electrode GE4 corresponds to the distance in the X-X' direction between the first wall portion 331 of the connector C1' and the second wall portion 332 of the connector C1'. The position of the third ground electrode GE3 relative to the fourth ground electrode GE4 in the Y-Y' direction corresponds to the position of the first wall portion 331 of the connector C1' relative to the second wall portion 332 of the connector C1'.

[0229] A first wall portion 331 of the connector C1' is placed on and electrically connected to the third ground electrode GE3, and a second wall portion 332 of the connector C1' is placed on and electrically connected to the fourth ground electrode GE4.

[0230] The first leg 321, the second leg 322, the first wall 331, and the second wall 332 of the connector C1' are electrically connected to the first ground electrode GE1, the second ground electrode GE2, the third ground electrode GE3, and the fourth ground electrode GE4 of the circuit board B1, so that the shell 300 of the connector C1' is at the same potential as at least one ground layer of the circuit board B1.

[0231] When the connection structure S1′ has a first return path, the first return path is composed of the ground terminal 500, the shell body 310, the first leg portion 321 and the second leg portion 322, the first wall portion 331 and the second wall portion 332, the first ground electrode GE1 and the second ground electrode GE2, the third ground electrode GE3 and the fourth ground electrode GE4, and at least one ground layer. When the connection structure S1′ has a second return path, the second return path is composed of the ground terminal 500, the shell body 310, the first leg portion 321 and the second leg portion 322, the first wall portion 331 and the second wall portion 332, the first ground electrode GE1 and the second ground electrode GE2, the third ground electrode GE3 and the fourth ground electrode GE4, two or more ground layers, and one or more first bypass electrodes. When the connection structure S1′ has a third return path, the third return path is composed of the shell body 310, the first leg portion 321 and the second leg portion 322, the first wall portion 331 and the second wall portion 332, the first ground electrode GE1 and the second ground electrode GE2, the third ground electrode GE3 and the fourth ground electrode GE4, and at least one ground layer. When the connection structure S1′ has a fourth return path, the fourth return path is composed of the shell body 310, the first leg portion 321 and the second leg portion 322, the first wall portion 331 and the second wall portion 332, the first ground electrode GE1 and the second ground electrode GE2, the third ground electrode GE3 and the fourth ground electrode GE4, two or more ground layers, and one or more first bypass electrodes.

[0232] When a resist is provided on the front surface 10d of the substrate body 10 of the circuit board B1, the resist further has a third opening and a fourth opening. The third opening is configured to expose a part or all of the end face of the third ground electrode GE3 on the Z direction side. The fourth opening is configured to expose a part or all of the end face of the fourth ground electrode GE4 on the Z direction side. The first opening, second opening, third opening, and fourth opening may be separated from each other. The resist may also be provided on the back surface 10c of the substrate body 10. Note that the resist is optional.

[0233] When one or more protrusions 340 are provided on the bottom surface 310c of the shell body 310 of the shell 300 of the connector C1′, as described above, the first leg 321 and the second leg 322 of the connector C1′ are electrically connected to the first ground electrode GE1 and the second ground electrode GE2 of the circuit board B1, the mounting portions 230 of one or more terminals 200 of the connector C1′ are electrically connected to one or more signal electrodes SE1 of the circuit board B1, and the first wall 331 and the second wall 332 of the connector C1′ are electrically connected to the third ground electrode GE3 and the fourth ground electrode GE4 of the circuit board B1. As a result, a gap G is formed between the bottom surface 310c of the shell body 310 and the circuit board B1. When one or more protrusions 340 are not provided, as described above, the bottom surface 310c of the shell body 310 is placed on the circuit board B1 in the following state: the first leg portion 321 of the connector C1' and the second leg portion 322 of the connector C1' are electrically connected to the first ground electrode GE1 of the circuit board B1 and the second ground electrode GE2 of the circuit board B1; the mounting portions 230 of one or more terminals 200 of the connector C1' are electrically connected to one or more signal electrodes SE1 of the circuit board B1; and the first wall portion 331 of the connector C1' and the second wall portion 332 of the connector C1' are electrically connected to the third ground electrode GE3 of the circuit board B1 and the fourth ground electrode GE4 of the circuit board B1.

[0234] The third ground electrode GE3 and the fourth ground electrode GE4 may be omitted.

[0235] The mating connector CP is insertable and detachable into the connector C1' of the above-described connection structure S1', similar to the connector C1 of the connection structure S1.

[0236] The connection structure S1' described above has the same technical features and effects as the first to seventh technical features and effects of the connection structure S1. Furthermore, the first wall portion 331 and the second wall portion 332 of the shell 300 of the connector C1' of the connection structure S1' extend in the Y' direction from the shell main body 310 and are disposed on the X and X' direction sides of the mounting portion 230 of one or more terminals 200. When the first wall portion 331 and the second wall portion 332 are connected to the third ground electrode GE3 and the fourth ground electrode GE4 of the circuit board B1, the ground strength of the connection structure S1' is improved, and as a result, the EMI characteristics of the connection structure S1' are improved.

[0237] "Connection structure S2 between connector C2 and circuit board B2 according to multiple embodiments including embodiment 3 and its design variations" Hereinafter, a connection structure S2 according to a third embodiment of the present invention and a plurality of other embodiments including design variations thereof will be described with reference to Figures 12A and 12B. Figures 12A and 12B show the connection structure S2 according to the third embodiment.

[0238] Figure 12A shows the Y-Y' direction and the Z-Z' direction. Figure 12B shows the Y-Y' direction and the X-X' direction. The Y-Y' direction, Z-Z' direction, and X-X' direction in the connection structure S2 correspond to the Y-Y' direction, Z-Z' direction, and X-X' direction in the description of the connector C2 above.

[0239] The connection structure S2 includes a circuit board B2 and a connector C2 mounted on the circuit board B2.

[0240] The circuit board B2 has the same configuration as the circuit board B1, except that at least one signal electrode SE2 is provided instead of at least one signal electrode SE1. Below, the differences between the circuit board B2 in the connection structure S2 will be described in detail, and the explanation of the circuit board B2 in the connection structure S2 that overlaps with the explanation of the circuit board B1 in the connection structure S1 will be omitted. At least one The reference numerals of the components other than the signal electrode SE2 are the same as those of the corresponding components of the circuit board B1.

[0241] The one or more signal electrodes SE2 of the circuit board B2 are one or more depending on the number of the one or more terminals 200 of the connector C2. The one or more signal electrodes SE1 penetrate the board main body 10 in the Z-Z' direction, open in both the Y and Y' directions, and are arranged according to the positions of the mounting portions 230 of the one or more terminals 200. At least one ground layer is not provided in the area of ​​the circuit board B2 where the one or more signal electrodes SE2 are provided. The one or more signal electrodes SE2 and the at least one ground layer are arranged at a distance from each other so as not to contact each other.

[0242] When the first leg 321 of connector C2 has a first portion 3211 and a second portion 3212, the second leg 322 of connector C2 has a first portion 3221 and a second portion 3222, and the Y-Y' direction dimensions of the first ground electrode GE1 of circuit board B2 and the Y-Y' direction dimensions of the second ground electrode GE2 of circuit board B2 correspond to the Y-Y' direction dimensions of the first leg 321 of connector C2 and the Y-Y' direction dimensions of the second leg 322 of connector C2 (see Figures 12A and 12B), one or more signal electrodes SE2 are arranged between the first ground electrode GE1 and the second ground electrode GE2.

[0243] One or each signal line SL of the circuit board B2 is directly connected to a corresponding signal electrode SE2.

[0244] As described above, connector C2 has the same configuration as connector C1, except that the configuration of mounting portion 230 of at least one terminal 200 differs from the configuration of mounting portion 230 of at least one terminal 200 of connector C1. Below, the differences of connector C2 in connection structure S2 will be described in detail, and any explanation of connector C2 in connection structure S2 that overlaps with the explanation of connector C1 in connection structure S1 will be omitted.

[0245] The mounting portions 230 of one or more terminals 200 of the connector C2 are inserted into and electrically connected to the corresponding signal electrodes SE2.

[0246] If the connection structure S2 has a first return path, the first return path of the connection structure S2 is configured similarly to the first return path of the connection structure S1. If the connection structure S2 has a second return path, the second return path of the connection structure S2 is configured similarly to the second return path of the connection structure S1. If the connection structure S2 has a third return path, the third return path of the connection structure S2 is configured similarly to the first return path of the connection structure S1. If the connection structure S2 has a fourth return path, the fourth return path of the connection structure S2 is configured similarly to the fourth return path of the connection structure S1.

[0247] When one or more protrusions 340 are provided on the bottom surface 310c of the shell body 310 of the shell 300 of the connector C2, as described above, when the first leg portion 321 and the second leg portion 322 of the connector C2 are electrically connected to the first ground electrode GE1 and the second ground electrode GE2 of the circuit board B2 and the mounting portion 230 of one or more terminals 200 of the connector C2 is electrically connected to one or more signal electrodes SE1 of the circuit board B2, the tip 340c of the one or more protrusions 340 abuts against the circuit board B2. This creates a gap G between the bottom surface 310c of the shell body 310 and the circuit board B2. When one or more protrusions 340 are not provided, as described above, the bottom surface 310c of the shell body 310 is placed on the circuit board B2 in a state in which the first leg portion 321 of the connector C2 and the second leg portion 322 of the connector C2 are electrically connected to the first ground electrode GE1 of the circuit board B2 and the second ground electrode GE2 of the circuit board B2, and the mounting portion 230 of one or more terminals 200 of the connector C2 is electrically connected to one or more signal electrodes SE1 of the circuit board B2.

[0248] The mating connector CP is insertable and detachable into the connector C2 of the above-described connection structure S2, similar to the connector C1 of the connection structure S1.

[0249] The above-described connecting structure S2 has the same technical features and effects as the first to seventh technical features and effects of the connecting structure S1. "Connection structure S2' between connector C2' and circuit board B2 according to multiple embodiments including embodiment 4 and its design variations" A connection structure S2' according to a fourth embodiment of the present invention and a number of other embodiments including design variations thereof will be described below with reference to Figures 13A and 13B. Figures 13A and 13B show the connection structure S2' according to the fourth embodiment.

[0250] Figure 13A shows the Y-Y' direction and the Z-Z' direction. Figure 13B shows the Y-Y' direction and the X-X' direction. The Y-Y' direction, Z-Z' direction, and X-X' direction in the connection structure S2' correspond to the Y-Y' direction, Z-Z' direction, and X-X' direction in the above description of the connector C2'.

[0251] The connection structure S2' has the same configuration as the connection structure S2, except that a connector C2' is mounted on the circuit board B2 instead of the connector C2. This difference will be explained in detail below, and any explanation of the connection structure S2' that overlaps with the explanation of the connection structure S2 will be omitted.

[0252] The circuit board B2 of the connection structure S2' may further include a third ground electrode GE3 and a fourth ground electrode GE4. The third ground electrode GE3 and the fourth ground electrode GE4 of the circuit board B2 of the connection structure S2' have substantially the same configuration as the third ground electrode GE3 and the fourth ground electrode GE4 of the circuit board B1 of the connection structure S1', except for the following differences. Therefore, only the differences will be described in detail, and the description of the third ground electrode GE3 and the fourth ground electrode GE4 of the circuit board B2 of the connection structure S2' that overlaps with the description of the third ground electrode GE3 and the fourth ground electrode GE4 of the circuit board B1 of the connection structure S1' will be omitted.

[0253] (Difference) When the first leg 321 is arranged on the X-direction side of the first wall 331 of the connector C2′ and the second leg 322 is arranged on the X'-direction side of the second wall 332 of the connector C2′, the third ground electrode GE3 of the circuit board B2 is arranged in a diagonal direction (first diagonal direction) including components in the Y'-direction and the X-direction with respect to one or more signal electrodes SE2 of the circuit board B2 and on the X'-direction side of the first ground electrode GE1 of the circuit board B2, and the fourth ground electrode GE4 of the circuit board B2 is arranged in a diagonal direction (second diagonal direction) including components in the Y'-direction and the X'-direction with respect to one or more signal electrodes SE2 of the circuit board B2 and on the X-direction side of the second ground electrode GE2 of the circuit board B2. When the first leg 321 is not disposed on the X-direction side of the first wall 331 of the connector C2′ and the second leg 322 is not disposed on the X′-direction side of the second wall 332 of the connector C2′, the third ground electrode GE3 of the circuit board B2 is disposed on the first diagonal side of one or more signal electrodes SE2 of the circuit board B2, and the fourth ground electrode GE4 of the circuit board B2 is disposed on the first diagonal side of one or more signal electrodes SE2 of the circuit board B2. SE2 It is arranged on the second diagonal direction side with respect to the

[0254] A first wall portion 331 of the connector C2' is placed on and electrically connected to a third ground electrode GE3 of the circuit board B2, and a second wall portion 332 of the connector C2' is placed on and electrically connected to a fourth ground electrode GE4 of the circuit board B2.

[0255] The first leg 321, the second leg 322, the first wall 331, and the second wall 332 of the connector C2' are electrically connected to the first ground electrode GE1, the second ground electrode GE2, the third ground electrode GE3, and the fourth ground electrode GE4 of the circuit board B2, so that the shell 300 of the connector C2' is at the same potential as at least one ground layer of the circuit board B2.

[0256] If the connection structure S2' has a first return path, the first return path of the connection structure S2' is configured similarly to the first return path of the connection structure S1'. If the connection structure S2' has a second return path, the second return path of the connection structure S2' is configured similarly to the second return path of the connection structure S1'. If the connection structure S2' has a third return path, the third return path of the connection structure S2' is configured similarly to the first return path of the connection structure S1'. If the connection structure S2' has a fourth return path, the fourth return path of the connection structure S2' is configured similarly to the fourth return path of the connection structure S1'.

[0257] When a resist is provided on the surface 10d of the board body 10 of the circuit board B2, the resist further has a third opening and a fourth opening that are separated from each other. The third opening exposes at least a part of the end face of the third ground electrode GE3 in the Z direction. The fourth opening exposes at least a part of the end face of the fourth ground electrode GE4 in the Z direction.

[0258] When one or more protrusions 340 are provided on the bottom surface 310c of the shell body 310 of the shell 300 of the connector C2′, as described above, the first leg portion 321 and the second leg portion 322 of the connector C2′ are electrically connected to the first ground electrode GE1 and the second ground electrode GE2 of the circuit board B2, the mounting portions 230 of one or more terminals 200 of the connector C2′ are electrically connected to one or more signal electrodes SE1 of the circuit board B2, and the first wall portion 331 and the second wall portion 332 of the connector C2′ are electrically connected to the third ground electrode GE3 and the fourth ground electrode GE4 of the circuit board B2. As a result, a gap G is formed between the bottom surface 310c of the shell body 310 and the circuit board B2. When one or more protrusions 340 are not provided, as described above, the bottom surface 310c of the shell body 310 is placed on the circuit board B2 in the following state: the first leg portion 321 of the connector C2' and the second leg portion 322 of the connector C2' are electrically connected to the first ground electrode GE1 and the second ground electrode GE2 of the circuit board B2, the mounting portions 230 of one or more terminals 200 of the connector C2' are electrically connected to one or more signal electrodes SE1 of the circuit board B2, and the first wall portion 331 of the connector C2' and the second wall portion 332 of the connector C2' are electrically connected to the third ground electrode GE3 and the fourth ground electrode GE4 of the circuit board B2.

[0259] The third ground electrode GE3 and the fourth ground electrode GE4 may be omitted.

[0260] The mating connector CP is insertable and detachable into the connector C2' of the above-described connection structure S2', similar to the connector C1 of the connection structure S1.

[0261] The above-described connection structure S2' has the same technical features and effects as the first to seventh technical features and effects of the connection structure S1'.

[0262] "Concerning a connection structure S3 between a connector C3 and a circuit board B3 according to a plurality of embodiments including embodiment 5 and its design variations" Hereinafter, connection structure S3 according to a fifth embodiment of the present invention and several other embodiments including design variations thereof will be described with reference to Figures 14A to 15B. Figures 14A to 14D show connection structure S3 according to the fifth embodiment. Figures 15A and 15B show a circuit board B3 of connection structure S3 according to the fifth embodiment.

[0263] 14A, 15A, and 15B show the Y-Y', Z-Z', and X-X' directions. 14B and 14C show the Y-Y' and Z-Z' directions. 14D shows the Y-Y' and X-X' directions. The Y-Y', Z-Z', and X-X' directions in the connection structure S3 correspond to the Y-Y', Z-Z', and X-X' directions in the description of the connector C3 above.

[0264] The connection structure S3 includes a circuit board B3 and a connector C3 mounted on the circuit board B3.

[0265] The circuit board B3 of the connection structure S3 has the same configuration as the circuit board B1, except that it further includes a third ground electrode GE3 and a fourth ground electrode GE4, and the dimensions of the first ground electrode GE1 and the second ground electrode GE2 of the circuit board B3 in the Y-Y' direction are smaller than the dimensions of the first ground electrode GE1 and the second ground electrode GE2 of the circuit board B1 in the Y-Y' direction. Below, the differences between the circuit board B3 of the connection structure S3 will be described in detail, and any explanation of the circuit board B3 of the connection structure S3 that overlaps with the explanation of the circuit board B1 of the connection structure S1 will be omitted. The reference numerals of the components of the circuit board B3, other than the third ground electrode GE3 and the fourth ground electrode GE4, will be the same as the reference numerals of the corresponding components of the circuit board B1.

[0266] When the first ground layer 20 is provided on the front surface 10d of the circuit board B3 (see FIG. 15A), the third ground electrode GE3 and the fourth ground electrode GE4 are surface electrodes formed of part of the first ground layer 20. When the first ground layer 20 is not provided on the front surface 10d of the circuit board B3 (not shown), the third ground electrode GE3 and the fourth ground electrode GE4 are surface electrodes on the front surface 10d of the circuit board B3. In this case, the third ground electrode GE3 and the fourth ground electrode GE4 are connected to at least one ground layer by a third bypass electrode (not shown) and are at the same potential as at least one ground layer.

[0267] The third ground electrode GE3 of the circuit board B3 is disposed at a distance in the X direction from one or more signal electrodes SE1. The fourth ground electrode GE4 of the circuit board B3 is disposed at a distance in the X' direction from one or more signal electrodes SE1.

[0268] The cross-sectional shapes, sizes, and positions of the third ground electrode GE3 and the fourth ground electrode GE4 of the circuit board B3 in the Y-Y' direction and the X-X' direction correspond to the cross-sectional shapes, sizes, and positions of the third leg 323 and the fourth leg 324 of the connector C3 in the Y-Y' direction and the X-X' direction. The distance between the third ground electrode GE3 and the fourth ground electrode GE4 in the X-X' direction corresponds to the distance between the third leg 323 and the fourth leg 324 of the connector C3 in the X-X' direction.

[0269] The third leg 323 of the connector C3 is placed on and electrically connected to the third ground electrode GE3, and the fourth leg 324 of the connector C3 is placed on and electrically connected to the fourth ground electrode GE4.

[0270] The first leg 321, the second leg 322, the third leg 323, and the fourth leg 324 of the connector C3 are electrically connected to the first ground electrode GE1, the second ground electrode GE2, the third ground electrode GE3, and the fourth ground electrode GE4 of the circuit board B3, so that the shell 300 of the connector C3 is at the same potential as at least one ground layer of the circuit board B3.

[0271] If the connection structure S3 has a first return path, the first return path of the connection structure S3 is configured similarly to the first return path of the connection structure S1'. If the connection structure S3 has a second return path, the second return path of the connection structure S3 is configured similarly to the second return path of the connection structure S1'. If the connection structure S3 has a third return path, the third return path of the connection structure S3 is configured similarly to the first return path of the connection structure S1'. If the connection structure S3 has a fourth return path, the fourth return path of the connection structure S3 is configured similarly to the fourth return path of the connection structure S1'.

[0272] When a resist is provided on the front surface 10d of the substrate body 10 of the circuit board B3, the resist further has a third opening and a fourth opening. The third opening is configured to expose at least a portion of the end face of the third ground electrode GE3 on the Z direction side. The fourth opening is configured to expose at least a portion of the end face of the fourth ground electrode GE4 on the Z direction side. The first, second, third, and fourth openings may be separated from one another. The resist may also be provided on the back surface 10c of the substrate body 10. Note that the resist is optional.

[0273] When one or more protrusions 340 are provided on the bottom surface 310c of the shell body 310 of the shell 300 of the connector C3, as described above, the first leg 321 and the second leg 322 of the connector C3 are electrically connected to the first ground electrode GE1 and the second ground electrode GE2 of the circuit board B3, the mounting portions 230 of one or more terminals 200 of the connector C3 are electrically connected to one or more signal electrodes SE1 of the circuit board B3, and the first wall 331 and the second wall 332 of the connector C3 are electrically connected to the third ground electrode GE3 and the fourth ground electrode GE4 of the circuit board B3, the tips 340c of the one or more protrusions 340 abut against the circuit board B3. This creates a gap G between the bottom surface 310c of the shell body 310 and the circuit board B3. When one or more protrusions 340 are not provided, as described above, the bottom surface 310c of the shell body 310 is placed on the circuit board B3 in a state in which the first leg portion 321 and the second leg portion 322 of the connector C3 are electrically connected to the first ground electrode GE1 and the second ground electrode GE2 of the circuit board B3, the mounting portions 230 of one or more terminals 200 of the connector C3 are electrically connected to one or more signal electrodes SE1 of the circuit board B3, and the first wall portion 331 and the second wall portion 332 of the connector C3 are electrically connected to the third ground electrode GE3 and the fourth ground electrode GE4 of the circuit board B3.

[0274] Here, the third and fourth simulations were performed as follows: The following conditions for the third simulation were set for the EM simulator (ANSYS HFSS manufactured by ANSYS) used in the third simulation.

[0275] [Conditions for the third simulation] The information used was modeled using an EM simulator on the connection structure S3 of Example 5 and the mating connector CP connected to the connector C3 of this connection structure S3. The configurations of the connection structure S3 and the mating connector CP are as shown in Figure 16A.

[0276] The connector C3 of the connection structure S3 has the configuration shown in Figures 5A to 5E and 14A to 14D, and includes one body 100, one terminal 200, one shell 300, one shield cover 400, and one ground terminal 500. The connector C3 has a first leg 321 with a dimension in the Y-Y' direction, a second leg 322 with a dimension in the Y-Y' direction, and a 322 The dimension in the Y-Y' direction of the first leg 321 of the connector C1 of the connecting structure S1 of Example 1 is the dimension in the Y-Y' direction of the second leg 322 1 and has a smaller dimension in the Y-Y' direction than that of the connector C1 of the connecting structure S1 of the first embodiment, and a third leg 323 and a fourth leg 324 are added.

[0277] The first leg 321 and the second leg 322 of the shell 300 are arranged in line symmetrical positions with respect to the first virtual line CL1, and have line symmetrical shapes with respect to the first virtual line CL1. The third leg 323 and the fourth leg 324 of the shell 300 are arranged in line symmetrical positions with respect to the first virtual line CL1, and have line symmetrical shapes with respect to the first virtual line CL1.

[0278] The first end 321 a of the first leg 321 and the first end 322 a of the second leg 322 are spaced apart from the first end 220 a of the tip 220 of the terminal 200 . Y direction side The second end 321b of the first leg 321 and the second end 322b of the second leg 322 are located slightly toward the Y direction from the midpoint in the Y-Y' direction between the first end 220a of the tip portion 220 of the terminal 200 and the Y direction end of the second portion of the main body 210 of the terminal 200.

[0279] A first end 323a of the third leg 323 and a first end 324a of the fourth leg 324 are located slightly toward the Y' direction from the midpoint and on the Y direction side of the first end 230a of the mounting portion 230 of the terminal 200. A second end 323b of the third leg 323 and a second end 324b of the fourth leg 324 are located on the Y' direction side of the second end 230b of the mounting portion 230 of the terminal 200. A third end 323c of the third leg 323 and a third end 324c of the fourth leg 324 are located at approximately the same position in the Z-Z' direction as the third end 230c of the mounting portion 230 of the terminal 200. A fourth end 323d of the third leg 323 and a fourth end 324d of the fourth leg 324 are located at the same position in the Z-Z' direction as the third end 230c of the mounting portion 230 of the terminal 200. 4th end 230d It is located on the Z-direction side of

[0280] 14A to 15B, the circuit board B3 of the connection structure S3 is a so-called four-layer board. The circuit board B3 has the same configuration as the circuit board B1 of the connection structure S1 of Example 1, except that the dimensions of the first ground electrode GE1 in the Y-Y' direction and the dimensions of the second ground electrode GE2 in the Y-Y' direction are smaller than the dimensions of the first ground electrode GE1 in the Y-Y' direction and the dimensions of the second ground electrode GE2 in the Y-Y' direction of the circuit board B1 of the connection structure S1 of Example 1, and a third ground electrode GE3 and a fourth ground electrode GE4 are added.

[0281] The cross-sectional shapes, sizes, and positions of the first ground electrode GE1 and the second ground electrode GE2 in the Y-Y' and X-X' directions correspond to the cross-sectional shapes, sizes, and positions of the first leg 321 and the second leg 322 of the connector C3 in the Y-Y' and X-X' directions. The first leg 321 and the second leg 322 of the connector C3 are inserted into the first ground electrode GE1 and the second ground electrode GE2 and connected by soldering. The first ground electrode GE1 and the second ground electrode GE2 are connected to the first ground layer 20, the second ground layer 30, and the two third ground layers 40.

[0282] The cross-sectional shapes, sizes, and positions of the third ground electrode GE3 and the fourth ground electrode GE4 in the Y-Y' and X-X' directions correspond to the cross-sectional shapes, sizes, and positions of the third leg 323 and the fourth leg 324 of the connector C3 in the Y-Y' and X-X' directions. The third leg 323 and the fourth leg 324 of the connector C3 are placed on the third ground electrode GE3 and the fourth ground electrode GE4 and are solder-connected. The third ground electrode GE3 and the fourth ground electrode GE4 are connected to the first ground layer 20, the second ground layer 30, and the two third ground layers 40.

[0283] The first ground layer 20, the second ground layer 30, and the two third ground layers 40 of the circuit board B3 of the connection structure S3 have the same configuration as the first ground layer 20, the second ground layer 30, and the two third ground layers 40 of the circuit board B1 of the connection structure S1 of Example 1.

[0284] The mating connector CP has the same configuration as that used in the first simulation.

[0285] Third In the simulation, the signal input port IN3 is set at the Y'-direction end of the signal line SL of the circuit board B3 of the connection structure S3. The signal output port OUT3 is set at the Y'-direction end of the inner conductor 4a of the cable 4 of the counterpart connector CP. transmission The speed is set to 12Gbps.

[0286] The following conditions for the fourth simulation were set for the EM simulator (ANSYS HFSS manufactured by ANSYS) used in the fourth simulation.

[0287] [Conditions for the fourth simulation] Information was used that was modeled using an EM simulator on the connection structure SC2 of Comparative Example 2 and the mating connector CP connected to the connector CC2 of this connection structure SC2. The configurations of the connection structure SC2 of Comparative Example 2 and the mating connector CP are as shown in Fig. 16B.

[0288] 16B, the dimensions of the first leg 321 in the Y-Y′ direction and the dimensions of the second leg 322 in the Y-Y′ direction of connector CC2 are smaller than the dimensions of the first leg 321 in the Y-Y′ direction and the dimensions of the second leg 322 in the Y-Y′ direction of connector C3 in the connection structure S3 of Example 5, and the first ends 321a of the first legs 321 and the first ends 322a of the second legs 322 are located approximately 1.5 mm shifted in the Y′ direction from the positions of the first ends 321a of the first legs 321 and the first ends 322a of the second legs 322 of connector C3 in the connection structure S3 of Example 5. Therefore, the components of connector CC2 are designated by the same reference numerals as the corresponding components of connector C3 in the connection structure S3 of Example 5, and redundant explanations will be omitted.

[0289] The circuit board BC2 of the connection structure SC2 has the same configuration as the circuit board B3 of the connection structure S3 of Example 5, except that the dimensions in the Y-Y' direction of the first ground electrode GE1 and the second ground electrode GE2 are shortened according to the dimensions in the Y-Y' direction of the first leg 321 and the second leg 322 of the connector CC2, and the first end GE1a of the first ground electrode GE1 and the first end GE2a of the second ground electrode GE2 are positioned approximately 1.5 mm shifted in the Y direction from the positions of the first end GE1a of the first ground electrode GE1 and the first end GE2a of the second ground electrode GE2 of the circuit board B3 of the connection structure S3 of Example 5. Therefore, the same reference numerals as the corresponding components of the circuit board BC2 are used, and redundant explanations will be omitted.

[0290] The linear distance in the Y-Y' direction from the first end GE1a of the first ground electrode GE1 and the first end GE2a of the second ground electrode GE2 to the first end 10a of the substrate body 10 is approximately 2.5 mm. Therefore, the first ground layer 20, the second ground layer 30, and the two third ground layers 40 each have an open stub whose dimension in the Y-Y' direction from the first end GE1a of the first ground electrode GE1 and the first end GE2a of the second ground electrode GE2 to the first end 10a of the substrate body 10 is approximately 2.5 mm.

[0291] The mating connector CP has the same configuration as that used in the first simulation.

[0292] Under the conditions of the third simulation above, the electric field strength analysis ( Third Simulation) and under the conditions of the fourth simulation, an electric field strength analysis ( Fourth Simulation) was performed.

[0293] [Results of the third and fourth simulations] The results of the electric field strength analysis of the third simulation are shown in Fig. 17A, and the results of the electric field strength analysis of the fourth simulation are shown in Fig. 17B. First, the results of the second simulation and the third simulation will be compared with each other with reference to Fig. 10B and Fig. 17A.

[0294] [Comparison between the results of the second and third simulations] In the results of the electric field strength analysis of the second simulation, electric field leakage is observed in the areas indicated by the arrows LE1, LE2, and LE3 near the edge-shaped portion of the shell body 310 of the connector CC1. However, in the results of the electric field strength analysis of the third simulation, almost no electric field leakage is observed in the areas LE1 and LE2. In the results of the electric field strength analysis of the third simulation, electric field leakage is observed in the area LE3, but it is observed that this is reduced compared to the electric field leakage in the area LE3 in the results of the electric field strength analysis of the second simulation (see FIG. 10B). The reason for this is as follows. The first end 321a of the first leg 321 and the first end 322a of the second leg 322 are closer to the first end 220a of the tip 220 of the terminal 200. Y direction side and the second end 321b of the first leg 321 and the second end 322b of the second leg 322 are located slightly closer to the Y-Y′ direction than the midpoint between the first end 220a of the tip 220 of the terminal 200 and the Y-direction end of the second part of the body 210 of the terminal 200. Y' direction sideThe first leg 321 and the second leg 322 are arranged on both sides in the X-X' direction of the Y-direction side portion of the tip portion 220 of the terminal 200 and the first portion of the main body portion 210 so that the first end 323a of the third leg 323 and the first end 324a of the fourth leg 324 are located slightly toward the Y'-direction side of the midpoint and on the Y-direction side of the first end 230a of the mounting portion 230 of the terminal 200, and the second end 323b of the third leg 323 and the second end 324b of the fourth leg 324 are located on the Y'-direction side of the second end 230b of the mounting portion 230 of the terminal 200. In other words, at the tip portion 220 of the terminal 200 and the portion of the first part of the main body 210 on the Y-direction side, the distances in the X-X′ direction from the terminal 200 to the first leg 321 and the second leg 322 are approximately the same, and the first leg 321 and the second leg 322 are located near the tip portion 220 of the terminal 200 and the portion of the first part of the main body 210 on the Y-direction side, and at the portion of the first part of the main body 210 on the Y′-direction side, the second part of the main body 210, and the mounting part 230, the distances in the X-X′ direction from the terminal 200 to the third leg 323 and the fourth leg 324 are approximately the same, and the third leg 323 and the fourth leg 324 are located near the portion of the first part of the main body 210 on the Y′-direction side, the second part of the main body 210, and the mounting part 230. This makes the ground strength of the connection structure S1 stronger than the ground strength of the connection structure SC1. Therefore, the portion where the shape of the terminal 200 of the connector C3 changes, the mounting portion 230 of the terminal 200, Circuit board B3Even if high-speed signal reflection occurs at at least one (at least one reflection portion) such as the connection portion between terminal 200 of connector C3 and terminal 3 of mating connector CP, the contact point between terminal 200 of connector C3 and terminal 3 of mating connector CP, and portion 221 (open stub) from that contact point to first end 220a of tip 220 of terminal 200, and the resulting reflected noise is radiated from at least one reflection portion to shell body 310, the noise is likely to flow from at least one of first leg 321, second leg 322, third leg 323, and fourth leg 324 of shell body 310 to at least one of first ground layer 20, second ground layer 30, and two third ground layers 40 of circuit board BC1. Therefore, it is considered that noise is less likely to be re-radiated to the outside from the edge-shaped portion of shell body 310.

[0295] Furthermore, the results of the electric field strength analysis in the second simulation show electric field leakage in the area indicated by the arrow LE4 between the shell body 310 of the connector CC1 and the circuit board BC1. However, the results of the electric field strength analysis in the third simulation show almost no electric field leakage in the area LE4. The reason for this is the same as the reason why almost no electric field leakage in the area LE4 was observed in the results of the electric field strength analysis in the first simulation.

[0296] Furthermore, the results of the electric field strength analysis of the second simulation show that there is electric field leakage in the area indicated by the arrow LE5 between the shell body 310 of the connector CC1 and the circuit board BC1. However, the results of the electric field strength analysis of the third simulation show that there is almost no electric field leakage in the area LE5. The reason for this is as follows: there are areas where no legs exist between the first leg 321 and the third leg 323 of the connector C3 and between the second leg 322 and the fourth leg 324, but the areas where no legs exist of the connector C3 are smaller than the areas where no legs exist of the connector CC1. This is because the connector C3 The first leg 321, the third leg 323, the second leg 322 and the fourth leg are elongated protrusions in the Y-Y′ direction, and the connector C3 The distance in the Y-Y′ direction between the first leg 321 and the third leg 323, the distance in the Y-Y′ direction between the second leg 322 and the fourth leg 324, Y-Y' direction This is because the gap is smaller than the gap in the Y-Y' direction between the first front leg 371F and the first rear leg 372R of the connector CC1 and the gap in the Y-Y' direction between the second front leg 371F and the second rear leg 372R of the connector CC1. Therefore, even if the gap G is generated between the bottom surface 310c of the shell body 310 of the connector C3 and the circuit board B3 due to the protrusion 340 of the connector C3, the shielding effect of the connector C3 is not reduced as in the case of the connector CC1, and therefore the terminal 200 transmission It is believed that this prevents noise superimposed on the high-speed signal from radiating directly from the terminal 200 to the outside of the connector C3.

[0297] [Comparison between the results of the first and third simulations] Next, comparing the results of the first simulation with the results of the third simulation with reference to Figures 10A and 17A, it is found that there is almost no difference in the electric field leakage in the entire area including areas LE1 to LE5 between the two simulations. The reason for this is as follows: Although there are areas where no legs exist between the first leg 321 and the third leg 323 and between the second leg 322 and the fourth leg 324 of connector C3, these areas are small. Excluding this area, a configuration in which a pair of legs (one of the pair of legs is the first leg 321 and the third leg 323, and the other is the second leg 322 and the fourth leg 324) that are elongated in the Y-Y' direction are arranged on both the X and X' sides of terminal 200 over the entire length of terminal 200 in the Y-Y' direction, and the distances in the X-X' direction from terminal 200 to each of the pair of legs are approximately the same is the same as a configuration in which a pair of legs (one of the pair of legs is the first leg 321 and the other is the second leg 322) that are elongated in the Y-Y' direction are arranged over the entire length of terminal 200 in the Y-Y' direction, and the distances in the X-X' direction from terminal 200 to each of the pair of legs are approximately the same. Other than this, the conditions of the first simulation and the third simulation are approximately the same. For this reason, it is considered that the leakage of the electric field is similarly reduced in all areas including the areas LE1 to LE5 of both.

[0298] [Comparison between the results of the third and fourth simulations] 17A and 17B, comparing the results of the third simulation with the results of the fourth simulation, it can be seen that the electric field leakage in areas LE1 to LE3 and LE5 in both simulations is approximately the same, while the electric field leakage in area LE4 in the results of the electric field strength analysis of the third simulation is reduced compared to the electric field leakage in area LE4 in the results of the electric field strength analysis of the fourth simulation. The reason for this is as follows. The conditions for the third simulation and the fourth simulation were that the dimensions in the Y-Y' direction of the first leg 321 and the dimensions in the Y-Y' direction of the second leg 322 of the connector CC2 were smaller than the dimensions in the Y-Y' direction of the first leg 321 and the dimensions in the Y-Y' direction of the second leg 322 of the connector C3, and that the first end 321a of the first leg 321 and the first end 322a of the second leg 322 of the connector CC2 were located at positions shifted approximately 1.5 mm in the Y' direction from the positions of the first end 321a of the first leg 321 and the first end 322a of the second leg 322 of the connector C3, and that the dimensions in the Y-Y' direction of the first ground electrode GE1 and the second ground electrode GE2 of the circuit board BC2 were shortened according to the dimensions in the Y-Y' direction of the first leg 321 and the second leg 322 of the connector CC2, and Circuit board B3The dimensions in the Y-Y' direction of the open stubs of the first ground layer 20, the second ground layer 30, and the third ground layer 40 are approximately 1 mm, which is approximately 1.5 mm shorter than the dimensions in the Y-Y' direction of the open stubs of the first ground layer 20, the second ground layer 30, and the third ground layer 40 of the circuit board BC2 of comparative example 2, except for this point. It can be seen that by setting the dimensions in the Y-Y' direction of the open stubs of the first ground layer 20, the second ground layer 30, and the third ground layer 40 to approximately 1 mm, as in the circuit board B3, re-radiation of noise from the open stubs of the first ground layer 20, the second ground layer 30, and the third ground layer 40 near area LE4 is suppressed. However, if the first end 20 a of the first ground layer 20, the first end 30 a of the second ground layer 30, and the first end 40 a of the third ground layer 40 were all positioned approximately in the Y-Y′ direction as the first end GE1 a of the first ground electrode GE1 and the first end GE2 a of the second ground electrode GE2, or positioned in the Y′ direction relative to the first end GE1 a of the first ground electrode GE1 and the first end GE2 a of the second ground electrode GE2, thereby eliminating the open stubs, the shielding effect would be lost in the region from the first end GE1 a of the first ground electrode GE1 and the first end GE2 a of the second ground electrode GE2 to the first end 10 a of the board main body 10, causing new electric field leakage. Therefore, it is not possible to completely eliminate the open stubs. In other words, at least one open stub is required for the first ground layer 20, the second ground layer 30, and the third ground layer 40.

[0299] The above-described connection structure S3 has the following technical features and effects.

[0300] (First technical feature and effect) The EMI characteristics of connection structure S3 can be improved for the following reason: First leg portion 321 and second leg portion 322 of shell 300 of connector C3 are protrusions that are elongated in the Y-Y' direction and are located on the X and X' direction sides of tip portions 220 of one or more terminals 200 and the Y direction side of the first portion of main body portion 210, thereby shortening the distance from first leg portion 321 and second leg portion 322 of shell 300 of connector C3 to tip portions 220 of one or more terminals 200 and the Y direction side of the first portion of main body portion 210. The third leg portion 323 and the fourth leg portion 324 of the shell 300 of the connector C3 are protrusions that are elongated in the Y-Y' direction and are located on the X and X' directions sides of the mounting portion 230 of one or more terminals 200, respectively, so that the distance from the third leg portion 323 and the fourth leg portion 324 of the shell 300 of the connector C3 to the mounting portion 230 of one or more terminals 200 is short. Moreover, because the first leg portion 321, the second leg portion 322, the third leg portion 323, and the fourth leg portion 324 are protrusions that are elongated in the Y-Y' direction, the cross-sectional areas of the first leg portion 321, the second leg portion 322, the third leg portion 323, and the fourth leg portion 324 in the Y-Y' direction and the Z-Z' direction, respectively, are larger than the cross-sectional areas of the corresponding cross sections of the front leg and the rear leg of the conventional connector. The first leg 321, the second leg 322, the third leg 323, and the fourth leg 324 of the connector C3 are connected to the circuit board. B3 via the first ground electrode GE1, the second ground electrode GE2, the third ground electrode GE3, and the fourth ground electrode GE4 on the circuit board. B3 Therefore, even if a high-speed signal transmitted by one or more terminals 200 is reflected on one or more terminals 200, and the reflected high-speed signal generates noise that is radiated to the shell body 310 of the shell 300, the noise is transmitted from at least one of the first leg 321, the second leg 322, the third leg 323, and the fourth leg 324 of the connector C3 to the circuit board. B3 via at least one of the first ground electrode GE1, the second ground electrode GE2, the third ground electrode GE3, and the fourth ground electrode GE4. B3Therefore, noise radiated to the shell body 310 of the shell 300 is easily transmitted from at least one of the first leg 321, the second leg 322, the third leg 323, and the fourth leg 324 of the connector C3 to the circuit board. B3 via at least one of the first ground electrode GE1, the second ground electrode GE2, the third ground electrode GE3, and the fourth ground electrode GE4. B3 This can suppress the possibility of noise being re-radiated from the edge-shaped portion of the shell main body 310 before flowing to at least one of the ground layers.

[0301] (Second technical features and effects) The EMC characteristics of the connection structure S3 can be improved. The reason is as follows. Since the first leg 321, the second leg 322, the third leg 323, and the fourth leg 324 of the connector C3 are elongated protrusions in the Y-Y' direction, the cross-sectional areas of the first leg 321, the second leg 322, the third leg 323, and the fourth leg 324 in the Y-Y' direction and the Z-Z' direction are increased. This reduces the impedance of the first leg 321, the second leg 322, the third leg 323, and the fourth leg 324, strengthening the grounding of the connection structure S3. This improves the EMC characteristics of the connection structure S3. In addition, the circuit board B 3 At least one of the ground layers is plural (all ground layers or plural ground layers less than all ground layers) and plural ground layers are formed on the circuit board B3 When the first leg portion 321, the second leg portion 322, the third leg portion 323, and the fourth leg portion 324 are connected to the first ground electrode GE1, the second ground electrode GE2, the third ground electrode GE3, and the fourth ground electrode GE4, respectively, the first leg portion 321, the second leg portion 322, the third ground electrode GE3, and the fourth ground electrode GE4 are connected to the circuit board B3 This also strengthens the ground of the connection structure S3.

[0302] (Technical features and effects Nos. 3 to 7) The connecting structure S3 has the same technical features and effects as the third to seventh technical features and effects of the connecting structure S1.

[0303] (8th Technical Features and Effects) In connector C3, the dimensions of first leg portion 321 and second leg portion 322 in the Y-Y' direction are shortened, and third leg portion 323 and fourth leg portion 324 are placed on and soldered to third ground electrode GE3 and fourth ground electrode GE4 of circuit board B3, so the amount of solder paste for first leg portion 321, second leg portion 322, third leg portion 323, and fourth leg portion 324 of connector C3 can be reduced compared to the amount of solder paste for first leg portion 321 and second leg portion 322 of connector C1. Therefore, connection structure S3 can reduce the cost of mounting connector C3 on circuit board B3.

[0304] "Connection structure S3' between connector C3' and circuit board B3 according to multiple embodiments including embodiment 6 and its design variations" A connection structure S3' according to a sixth embodiment of the present invention and a number of other embodiments including design variations thereof will be described below with reference to Figures 18A and 18B. Figures 18A and 18B show the connection structure S3' according to the sixth embodiment.

[0305] Figure 18A shows the Y-Y' direction and the Z-Z' direction. Figure 18B shows the Y-Y' direction and the X-X' direction. The Y-Y' direction, Z-Z' direction, and X-X' direction in the connection structure S3' correspond to the Y-Y' direction, Z-Z' direction, and X-X' direction in the above description of the connector C3'.

[0306] The connection structure S3' has the same configuration as the connection structure S3, except that a connector C3' is mounted on the circuit board B3 instead of the connector C3. This difference will be described in detail below, and any explanation of the connection structure S3' that overlaps with the explanation of the connection structure S3 will be omitted.

[0307] The dimension in the X-X' direction of the third ground electrode GE3 of the circuit board B3 of the connection structure S3' may correspond to the sum of the dimension in the X-X' direction of the third leg 323 of the connector C3' and the dimension in the X-X' direction of the first wall 331 of the connector C3'. The dimension in the X-X' direction of the fourth ground electrode GE4 of the circuit board B3 of the connection structure S3' may correspond to the sum of the dimension in the X-X' direction of the fourth leg 324 of the connector C3 and the dimension in the X-X' direction of the second wall 332 of the connector C3'. In this case, the distance in the X-X' direction between the third ground electrode GE3 and the fourth ground electrode GE4 of the circuit board B3 of the connection structure S3' corresponds to the distance in the X-X' direction between the first wall 331 of the connector C3' and the second wall 332 of the connector C3'. The third leg 323 and the first wall 331 of the connector C3' are placed on and electrically connected to the third ground electrode GE3 of the circuit board B3. The fourth leg portion 324 and the second wall portion 332 of the connector C3' are placed on and electrically connected to the fourth ground electrode GE4 of the circuit board B3.

[0308] The third ground electrode GE3 and the fourth ground electrode GE4 of the circuit board B3 of the connection structure S3' may have the same configuration as the third ground electrode GE3 and the fourth ground electrode GE4 of the circuit board B3 of the connection structure S3. In this case, the first wall portion 331 and the second wall portion 332 of the connector C3' of the connection structure S3' are not placed on the third ground electrode GE3 and the fourth ground electrode GE4.

[0309] If the connection structure S3' has a first return path, the first return path of the connection structure S3' is configured similarly to the first return path of the connection structure S1'. If the connection structure S3' has a second return path, the second return path of the connection structure S3' is configured similarly to the second return path of the connection structure S1'. If the connection structure S3' has a third return path, the third return path of the connection structure S3' is configured similarly to the first return path of the connection structure S1'. If the connection structure S3' has a fourth return path, the fourth return path of the connection structure S3' is configured similarly to the fourth return path of the connection structure S1'.

[0310] The mating connector CP is insertable and detachable into the connector C3' of the above-described connection structure S3', similar to the connector C1 of the connection structure S1.

[0311] The above-described connection structure S3' has the same technical features and effects as the first to eighth technical features and effects of the connection structure S3.

[0312] The circuit board B3 or B3′ may be provided with one or more signal electrodes SE2 instead of one or more signal electrodes SE1. In this case, the mounting portion 230 of one or more terminals 200 of the connector C3 or C3′ may extend in the Z′ direction from the third end 210c of the main body 210 of the terminal 200 and may be inserted into one or more signal electrodes SE2 to be electrically connected thereto.

[0313] The first direction of the present invention can be set arbitrarily as long as it is the axial direction of the cylindrical shell body of the connector shell. The second direction of the present invention can be set arbitrarily as long as it is approximately perpendicular to the first direction. The third direction of the present invention can be set arbitrarily as long as it is approximately perpendicular to the first and second directions. [Explanation of symbols]

[0314] S1, S1', S2, S2', S3, S3', SC1, SC2: Connection structure C1, C1', C2, C2', C3, C3', CC1, CC2: Connectors 100:Body 200: Terminal 210: Main body 220: Tip 230: Mounting section 210a: First end of main body portion 210b: Second end of main body portion 210c: Third end of main body portion 220a: First end of tip portion 220b: Second end of tip portion 230a: First end of mounting portion 230b: Second end of the mounting portion 230c: Third end of the mounting portion 230d: Fourth end of the mounting portion 300: Shell 310: Shell body 321: First leg 322: Second leg 323: Third leg 324: Fourth leg 331: First wall 332: Second wall 340: Projection 350: Engaging part: 360: Second connecting part 310c: Bottom surface of shell body 310e: First side surface of shell body 310f: Second side surface of shell body 311: Internal space 311a: First space 311o: Central space 311b: Second space 321a: First end of first leg 321b: Second end of first leg 321c: Third end of first leg 321d: Fourth end of first leg 322a: First end of second leg 322b: Second end of second leg 322c: Third end of second leg 322d: Fourth end of second leg 323a: First end of third leg 323b: Second end of third leg 323c: Third end of third leg 323d: Fourth end of third leg 324a: First end of fourth leg 324b: Second end of fourth leg portion 324c: Third end of fourth leg portion 324d: Fourth end of fourth leg portion 331a: First end of first wall portion 331b: Second end of first wall portion 331c: Third end of first wall portion 331d: Fourth end of first wall portion 332a: First end of second wall portion 332b: Second end of second wall portion 332c: Third end of second wall portion 332d: Fourth end of second wall portion 340c: Tip of protrusion 400: Shield cover 410: Cover part 420: Engagement Arm 500: Ground terminal 510: First annular portion 520: Second annular portion 530: Contact spring B1, B2, B3, BC1, BC2: Circuit boards 10: Board body 20: First ground layer 30: Second ground layer 40: Third ground layer GE1 : First ground electrode GE2: Second ground electrode GE3: Third ground electrode GE4: Fourth ground electrode SE1, SE2: Signal electrodes SL: Signal line 20a: First end of the first ground layer 30a: First end of the second ground layer 40a: First end of the third ground layer GE1a: First end of the first ground electrode GE1b: Second end of the first ground electrode GE2a: First end of the second ground electrode GE2b: Second end of the second ground electrode GE3a: First end of the third ground electrode GE3b: Fourth end of the third ground electrode GE4a: First end of the fourth ground electrode GE4b: Second end of the fourth ground electrode CP: Mating connector 1: Shielding material2: Inner body 3: Terminal 4: Cable 5: Housing 4a: Inner conductor 4b: Inner insulator 4c: Outer conductor 4d: Outer insulator CL1: 1st virtual line CL2: 3rd virtual line G: Gap

Claims

1. The device includes an insulating body, at least one conductive terminal, and a conductive shell, The at least one terminal has a main portion at least partially held by the body, a tip portion, and a mounting portion, the main body portion has a first end on one side in a first direction, a second end on the other side in the first direction, and a third end on one side in a second direction that is substantially perpendicular to the first direction, the tip portion extends in one of the first directions from the first end of the main body portion and protrudes from the body in one of the first directions, the mounting portion extends from the third end of the main body portion in the other direction in the first direction or the one direction in the second direction and is located outside the body; the shell has a shell body, a first leg portion electrically connected to a first ground electrode of the substrate, and a second leg portion electrically connected to a second ground electrode of the substrate, the shell main body is a substantially cylindrical body extending in the first direction, the body is accommodated and held in the shell main body, and the main body portion and the tip portion of the at least one terminal are accommodated in the shell main body, the first direction being an axial direction of the shell main body, the first leg portion is a protrusion that is elongated in the first direction and extends in one direction in the second direction from a bottom surface of the shell body on one side in the second direction, and is disposed on one side in a third direction with respect to the at least one terminal, a dimension of the first leg portion in the first direction being larger than a dimension of at least the tip end of the at least one terminal in the first direction, and the third direction is a direction that is substantially perpendicular to the first direction and the second direction, the second leg portion is a protrusion that is elongated in the first direction and extends from the bottom surface of the shell body in one direction in the second direction, and is disposed on the other side in the third direction with respect to the at least one terminal, and a dimension of the second leg portion in the first direction is greater than a dimension of the tip end of at least one terminal in the first direction, the tip portion of the at least one terminal has a first end on one side in the first direction and a second end on the other side in the first direction, the first leg portion has a first end on one side in the first direction and a second end on the other side in the first direction, and the second leg portion has a first end on one side in the first direction and a second end on the other side in the first direction, A connector in which the first end of the first leg and the first end of the second leg are located on one side of the first end of the tip portion of the at least one terminal in the first direction, and the second end of the first leg and the second end of the second leg are located on the other side of the second end of the tip portion of the at least one terminal in the first direction.

2. 2. The connector according to claim 1, the mounting portion of the at least one terminal has a first end on one side in the first direction and a second end on the other side in the first direction, A connector in which the second end of the first leg and the second end of the second leg are located on the other side of the second end of the mounting portion of the at least one terminal in the first direction or are located at approximately the same position in the first direction as the second end of the mounting portion of the at least one terminal.

3. 3. The connector according to claim 1, the first leg portion and the second leg portion are disposed at positions that are approximately line-symmetric in the third direction with a first virtual line or a second virtual line as a symmetry axis, and have shapes that are approximately line-symmetric in the third direction with the first virtual line or the second virtual line as the symmetry axis, the first imaginary line extends in the first direction through a substantial center of the main body of one terminal when the at least one terminal is one, A connector in which the second virtual line extends in the first direction through approximately the midpoint of the straight-line distance in the third direction from the end on one side in the third direction of the main body portion of the terminal located furthest on the one side in the third direction when there are multiple at least one terminal to the end on the other side in the third direction of the main body portion of the terminal located furthest on the other side in the third direction.

4. The connector according to any one of claims 1 to 3, the mounting portion of the at least one terminal has a third end on one side in the second direction, the first leg portion has a third end on one side in the second direction, the second leg portion has a third end on one side in the second direction, A connector in which the third end of the first leg and the third end of the second leg are located on one side of the third end of the mounting portion of the at least one terminal in the second direction or are located at approximately the same position in the second direction as the third end of the mounting portion of the at least one terminal.

5. The connector according to any one of claims 1 to 3, the mounting portion of the at least one terminal extends from the third end of the main body portion in the other direction in the first direction, and has a first end on one side in the first direction and a second end on the other side in the first direction, The shell further includes a third leg and a fourth leg. the third leg portion is a protrusion that is elongated in the first direction and extends from the shell body in one direction in the second direction, and is disposed on the other side of the first leg portion in the first direction and on one side of the mounting portion of the at least one terminal in the third direction, the third leg portion has a first end on one side in the first direction and a second end on the other side in the first direction, the fourth leg portion is a protrusion that is elongated in the first direction and extends from the shell body in one direction in the second direction, and is disposed on the other side in the first direction with respect to the second leg portion and on the other side in the third direction with respect to the mounting portion of the at least one terminal, the fourth leg portion has a first end on one side in the first direction and a second end on the other side in the first direction, the first end of the third leg portion and the first end of the fourth leg portion are located at approximately the same position in the first direction as the first end of the mounting portion of the at least one terminal, or are located on one side in the first direction with respect to the first end of the mounting portion of the at least one terminal, A connector in which the second end of the third leg and the second end of the fourth leg are located at approximately the same position in the first direction as the second end of the mounting portion of the at least one terminal, or are located on the other side in the first direction of the second end of the mounting portion of the at least one terminal.

6. 6. The connector according to claim 5, the mounting portion of the at least one terminal further has a third end on one side in the second direction and a fourth end on the other side in the second direction, the third leg portion further has a third end on one side in the second direction, the fourth leg portion further has a third end on one side in the second direction, A connector in which the third end of the third leg portion and the third end of the fourth leg portion are located at approximately the same position in the second direction as the third end of the mounting portion of the at least one terminal.

7. The connector according to any one of claims 1 to 6, The mounting portion of the at least one terminal has a first end on one side in the first direction, a second end on the other side in the first direction, a third end on one side in the second direction, and a fourth end on the other side in the second direction. a fourth end; The shell further includes a first wall and a second wall, the first wall portion is a portion extending from the shell main body to the other side in the first direction or a part of a wall of the shell main body on one side in the third direction, and is located on one side in the third direction with respect to the mounting portion of the at least one terminal, the first wall portion has a first end on one side in the first direction, a second end on the other side in the first direction, a third end on one side in the second direction, and a fourth end on the other side in the second direction, the second wall portion is a portion extending from the shell body to the other side in the first direction or a part of a wall of the shell body on the other side in the third direction, and is located on the other side in the third direction with respect to the mounting portion of the at least one terminal, and the second wall portion has a first end on one side in the first direction, a second end on the other side in the first direction, a third end on one side in the second direction, and a fourth end on the other side in the second direction, the second end of the first wall portion and the second end of the second wall portion are located at approximately the same position in the first direction as the second end of the mounting portion of the at least one terminal, or are located on the other side in the first direction with respect to the second end of the mounting portion of the at least one terminal, the third end of the first wall portion and the third end of the second wall portion are located at approximately the same position in the second direction as the third end of the mounting portion of the at least one terminal, A connector in which the fourth end of the first wall portion and the fourth end of the second wall portion are located at approximately the same position in the second direction as the fourth end of the mounting portion of the at least one terminal, or are located on the other side of the fourth end of the mounting portion of the at least one terminal in the second direction.

8. The connector according to any one of claims 1 to 7, The shell further includes at least one protrusion extending from the shell body in one of the second directions, A connector in which the at least one protrusion has a tip on one side in the second direction.

9. A circuit board; The connector according to any one of claims 1 to 4 and 7 to 8 is provided, the circuit board includes an insulating substrate body, at least one ground layer, at least one conductive signal electrode, a conductive first ground electrode, and a conductive second ground electrode; the substrate body has a surface on one side in the second direction and a back surface on the other side in the second direction, the at least one ground layer includes at least one of a first ground layer having conductivity provided on the front surface of the board body, a second ground layer having conductivity provided on the back surface of the board body, and at least one third ground layer having conductivity provided inside the board body; the at least one signal electrode is a surface electrode provided on the surface of the substrate body, the first ground electrode and the second ground electrode are through-hole electrodes elongated in the first direction, penetrate the board body in the second direction, are spaced apart from each other in the third direction, are electrically connected to the at least one ground layer, and are at the same potential as the at least one ground layer; the mounting portion of the at least one terminal of the connector extends from the third end of the main body portion in the other direction of the first direction, is placed on the at least one signal electrode, and is electrically connected to the at least one signal electrode; the first leg of the connector is inserted into the first ground electrode and electrically connected to the first ground electrode; A connection structure between a circuit board and a connector, wherein the second leg of the connector is inserted into the second ground electrode and is electrically connected to the second ground electrode.

10. A circuit board; The connector according to any one of claims 1 to 4 and 7 to 8, the circuit board includes an insulating substrate body, at least one ground layer, at least one conductive signal electrode, a conductive first ground electrode, and a conductive second ground electrode; the substrate body has a surface on one side in the second direction and a back surface on the other side in the second direction, the at least one ground layer includes at least one of a first ground layer having conductivity provided on the front surface of the board body, a second ground layer having conductivity provided on the back surface of the board body, and at least one third ground layer having conductivity provided inside the board body; the at least one signal electrode is a through-hole electrode that penetrates the circuit board in the second direction; the first ground electrode and the second ground electrode are through-hole electrodes elongated in the first direction, penetrate the board body in the second direction, are spaced apart from each other in the third direction, are electrically connected to the at least one ground layer, and are at the same potential as the at least one ground layer; the mounting portion of the at least one terminal of the connector extends from the third end of the main body portion in one of the second directions, is inserted into the at least one signal electrode, and is electrically connected to the at least one signal electrode; the first leg of the connector is inserted into the first ground electrode and electrically connected to the first ground electrode; A connection structure between a circuit board and a connector, wherein the second leg of the connector is inserted into the second ground electrode and is electrically connected to the second ground electrode.

11. A circuit board; The connector according to claim 5 or 6, the circuit board includes an insulating substrate body, at least one ground layer, at least one conductive signal electrode, a conductive first ground electrode, a conductive second ground electrode, a conductive third ground electrode, and a conductive fourth ground electrode; the substrate body has a surface on one side in the second direction and a back surface on the other side in the second direction, the at least one ground layer includes at least one of a first ground layer having conductivity provided on the front surface of the board body, a second ground layer having conductivity provided on the back surface of the board body, and at least one third ground layer having conductivity provided inside the board body; the at least one signal electrode is a surface electrode provided on the surface of the substrate body, the first ground electrode and the second ground electrode are through-hole electrodes elongated in the first direction, penetrate the board body in the second direction, are spaced apart from each other in the third direction, are electrically connected to the at least one ground layer, and are at the same potential as the at least one ground layer; The third ground electrode is a surface electrode provided on the surface of the substrate body, is disposed on the other side of the first direction with a gap from the first ground electrode, is disposed on one side of the at least one signal electrode in the third direction, and is electrically connected to the at least one ground layer. They are at the same potential, the fourth ground electrode is a surface electrode provided on the surface of the substrate body, is disposed on the other side of the first direction with a gap from the second ground electrode, is disposed on the other side of the at least one signal electrode in the third direction, is electrically connected to the at least one ground layer, and is at the same potential as the at least one ground layer; the mounting portion of the at least one terminal of the connector extends from the third end of the main body portion in the other direction of the first direction, is placed on the at least one signal electrode, and is electrically connected to the at least one signal electrode; the first leg of the connector is inserted into the first ground electrode and electrically connected to the first ground electrode; the second leg of the connector is inserted into the second ground electrode and electrically connected to the second ground electrode; the third leg of the connector is placed on and electrically connected to the third ground electrode; A connection structure between a circuit board and a connector, wherein the fourth leg portion of the connector is placed on the fourth ground electrode and is electrically connected to the fourth ground electrode.

12. A connection structure between a circuit board and a connector according to any one of claims 9 to 11, the circuit board further includes at least one signal line having electrical conductivity; the at least one signal line is provided on the front surface of the substrate body or on the back surface of the substrate body and is connected to the at least one signal electrode; A connection structure between a circuit board and a connector, wherein the at least one signal line and the at least one ground layer form a microstrip line or a coplanar line.

13. A connection structure between a circuit board and a connector according to any one of claims 9 to 12, the at least one ground layer extends in one direction in the first direction beyond the first ground electrode and the second ground electrode, the circuit board further has a first end on one side in the first direction, the first ground electrode has a first end on one side in the first direction, the second ground electrode has a first end on one side in the first direction, A connection structure between a circuit board and a connector, wherein the linear distance in the first direction from each of the first ends of the first ground electrode and the second ground electrode to the first end of the circuit board is approximately 1 mm.

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