Coaxial connector, wiring board provided with same, and electronic component testing device

Abstract

The present application provides a wiring board with a coaxial connector, which can arrange coaxial terminals in high density and ensure desired electrical characteristics. The wiring board (1) has a wiring board main body (10) and a coaxial connector (20), the coaxial connector has a plurality of coaxial terminals (30) and a housing (70), the plurality of coaxial terminals are arranged in a manner of forming multiple columns, the coaxial terminal has a signal terminal (40) and a ground terminal (60), the ground terminal has a cylindrical main body part (60a) and contact sheets (67), (64), the contact sheets (67), (64) have contact parts (673), (643) respectively contacting the wiring board main body, and respectively extend from the main body part, when the wiring board is viewed in a perspective top view along the normal direction of the wiring board main body, a part of the outer side contact sheet (67) of the coaxial terminal overlaps a part of the inner side contact sheet (64) of the adjacent coaxial terminal.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a wiring board provided with a coaxial connector, an electronic component test device, and a coaxial connector thereof, which can be used for an electronic component test device that tests a semiconductor integrated circuit element or the like as a test electronic component (DUT: Device Under Test). BACKGROUND

[0002] A conventional coaxial terminal is provided with a ground terminal having a cylindrical main body, and a signal terminal provided inside the cylindrical main body, the ground terminal having a plurality of contact portions that contact a circuit board (see, for example, Patent Literature 1).

[0003] PRIOR ART DOCUMENTS

[0004] PATENT LITERATURE

[0005] Patent Literature 1: Japanese Patent Application Publication No. 2011-238495 SUMMARY

[0006] PROBLEMS TO BE SOLVED BY THE INVENTION

[0007] In a connector using the above-described coaxial terminal, it is required to arrange more coaxial terminals at a high density. On the other hand, if coaxial terminals are arranged at a high density, there is a case where desired electrical characteristics are not satisfied.

[0008] The present disclosure aims to provide a wiring board provided with a coaxial connector, an electronic component test device, and the coaxial connector, which can arrange coaxial terminals at a high density and ensure desired electrical characteristics.

[0009] TECHNICAL SOLUTION FOR SOLVING THE PROBLEMS

[0010] [1] A wiring board according to the present disclosure is provided with a wiring board main body and a coaxial connector mounted to the wiring board main body, wherein the coaxial connector is provided with a plurality of coaxial terminals and a housing that holds the coaxial terminals, the plurality of coaxial terminals are arranged in a manner to form at least one column, the coaxial terminal is provided with a signal terminal and a ground terminal that is spaced apart from and covers the signal terminal, the ground terminal is provided with a cylindrical first main body portion and first and second contact pieces, the first and second contact pieces each have a first and second contact portion that contacts the wiring board main body and each extend from the first main body portion, and in a perspective top view of the wiring board in which a normal direction of the wiring board main body is viewed, a portion of the first contact piece of the coaxial terminal overlaps a portion of the second contact piece of an adjacent coaxial terminal.

[0011] [2] In the above disclosure, the first contact piece can also have the first contact portion located outside the first main body portion in the see-through top view, a first stem portion connected to the first main body portion, and a first curved portion interposed between the first contact portion and the first stem portion and located inside the first main body portion in the see-through top view, and the second contact piece can also have the second contact portion located inside the first main body portion in the see-through top view, a second stem portion connected to the first main body portion, and a second curved portion interposed between the second contact portion and the second stem portion and located outside the first main body portion in the see-through top view, and in the see-through top view, the first contact portion of the coaxial terminal can overlap the second curved portion of an adjacent coaxial terminal.

[0012] [3] In the above disclosure, the plurality of coaxial terminals can be arranged in a manner to form a plurality of columns arranged side by side, and the coaxial terminals of mutually adjacent columns can be arranged staggered with respect to each other, and the signal terminal can include a second main body portion, and a third contact piece having a third contact portion in contact with the wiring board main body and extending from the second main body portion, and in the see-through top view, the first contact portion of the coaxial terminal can be located on a first imaginary straight line, which is an imaginary straight line passing through the third contact portion of the coaxial terminal and the third contact portion of the coaxial terminal of an adjacent column.

[0013] [4] In the above disclosure, the third contact piece can extend from the second main body portion to a first direction side in the see-through top view, the first direction being a direction substantially parallel to an arrangement direction of the coaxial terminals constituting the same column in the see-through top view, and being a direction from the second contact piece toward the first contact piece.

[0014] [5] In the above disclosure, the coaxial terminal can include a pair of the second contact pieces, and in the see-through top view, a portion of the pair of second contact pieces of the ground terminal can overlap a portion of the signal terminal, respectively.

[0015] [6] In the above disclosure, the plurality of coaxial terminals can be arranged in a manner to form a plurality of columns arranged side by side, and the coaxial terminals of mutually adjacent columns can be arranged staggered with respect to each other, and in the see-through top view, a portion of the signal terminal of the coaxial terminal can be located on a second imaginary straight line, which is an imaginary straight line extending in a direction substantially orthogonal to an arrangement direction of the coaxial terminals constituting the same column and passing through the second contact portion of the coaxial terminal of an adjacent column.

[0016] [7] In the above disclosure, it can also be that the plurality of coaxial terminals are arranged in a manner to form a plurality of rows arranged side by side, the coaxial terminals of adjacent rows are arranged staggered with respect to each other, and in the perspective top view, a portion of the signal terminals of the coaxial terminals is located on a third imaginary straight line, the third imaginary straight line being an imaginary straight line extending in a direction substantially orthogonal to the arrangement direction of the coaxial terminals constituting the same row, and passing through a portion of the signal terminals of the coaxial terminals of adjacent rows.

[0017] [8] In the above disclosure, it can also be that the ground terminal has a fourth contact piece extending from the first body portion to a side opposite to the first and second contact pieces.

[0018] [9] In the above disclosure, it can also be that the signal terminal has a second body portion, a third contact piece having a third contact portion contacting the wiring board body and extending from the second body portion, and a fifth contact piece extending from the second body portion to a side opposite to the third contact piece.

[0019]

[10] In the above disclosure, it can also be that the coaxial terminal has a pair of the first contact pieces arranged in line symmetry with respect to a center line of the coaxial terminal in the perspective top view, the center line of the coaxial terminal extending in a direction substantially parallel to the arrangement direction of the coaxial terminals constituting the same row, and a pair of the second contact pieces also arranged in line symmetry with respect to the center line in the perspective top view.

[0020]

[11] In the above disclosure, it can also be that the coaxial terminal has an insulating member interposed between the signal terminal and the ground terminal.

[0021]

[12] In the above disclosure, it can also be that the wiring board body has a first wiring pattern contacting the first and second contact portions of the ground terminal, and a second wiring pattern contacting the third contact portion of the signal terminal.

[0022]

[13] An electronic component testing device according to the present disclosure is an electronic component testing device that tests a DUT, and has the above-described wiring board.

[0023]

[14] The coaxial connector according to the present disclosure includes a plurality of coaxial terminals and a housing that holds the coaxial terminals, wherein the plurality of coaxial terminals are arranged in at least one row, the coaxial terminals include a signal terminal and a ground terminal that is spaced apart from the signal terminal and covers the signal terminal, the ground terminal includes a cylindrical first body portion and first and second contact pieces that each have a first and second contact portion at a front end and extend from the first body portion, and in a perspective top view of a wiring board in which the coaxial connector is mounted to a wiring board body, a portion of the first contact piece of the coaxial terminal overlaps a portion of the second contact piece of an adjacent coaxial terminal.

[0024] Inventive Effects

[0025] According to the present disclosure, a portion of the first contact piece of a coaxial terminal overlaps a portion of the second contact piece of an adjacent coaxial terminal in a perspective top view, so the spacing between adjacent coaxial terminals can be reduced and the coaxial terminals can be arranged at high density. In addition, in the present disclosure, the first and second contact pieces can be closely sandwiched between adjacent signal terminals, so the shielding performance of the coaxial terminals can be improved. Thus, in the present disclosure, the coaxial terminals can be arranged at high density and desired electrical characteristics can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a perspective view of a wiring board in an embodiment of the present disclosure as viewed from above.

[0027] Figure 2 is a plan view of a coaxial connector in an embodiment of the present disclosure.

[0028] Figure 3 is a bottom view of a coaxial connector in an embodiment of the present disclosure.

[0029] Figure 4 is an exploded perspective view of a coaxial connector in an embodiment of the present disclosure as viewed from below.

[0030] Figure 5 is a plan view of a modification of a coaxial connector in an embodiment of the present disclosure.

[0031] Figure 6 is a front view of a coaxial terminal in an embodiment of the present disclosure.

[0032] Figure 7 is an exploded perspective view of a coaxial terminal in an embodiment of the present disclosure.

[0033] Figure 8is a perspective view showing a signal terminal in an embodiment of the present disclosure.

[0034] Figure 9 is a front view showing a signal terminal and an insulating member in an embodiment of the present disclosure.

[0035] Figure 10 is a perspective view showing a coaxial terminal in an embodiment of the present disclosure, as viewed from the front.

[0036] Figure 11 is a perspective view showing a coaxial terminal in an embodiment of the present disclosure, as viewed from the back.

[0037] Figure 12 is a bottom view showing a coaxial terminal in an embodiment of the present disclosure.

[0038] Figure 13 is an enlarged sectional view showing a housing in an embodiment of the present disclosure, as corresponding to Figure 2 XIII-XIII line of FIG. 13.

[0039] Figure 14 is an enlarged plan view showing a holding hole of a housing in an embodiment of the present disclosure.

[0040] Figure 15 is a perspective plan view of a wiring board in an embodiment of the present disclosure, as viewed from below, and is a view showing a positional relationship of a coaxial terminal and a wiring pattern.

[0041] Figure 16 is a perspective plan view of a wiring board in an embodiment of the present disclosure, as viewed from below, and is a view showing a positional relationship of an outer contact piece of a ground terminal and signal terminals of mutually adjacent columns.

[0042] Figure 17 is a perspective plan view of a wiring board in an embodiment of the present disclosure, as viewed from below, and is a view showing a positional relationship of a signal terminal and an inner contact piece of an adjacent column.

[0043] Figure 18 is a perspective plan view of a wiring board in an embodiment of the present disclosure, as viewed from below, and is a view showing a positional relationship of signal terminals of mutually adjacent columns to each other.

[0044] Figure 19 is a schematic view showing a structure of an electronic component testing device in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0045] Hereinafter, an embodiment of the present disclosure will be described based on the drawings.

[0046] Figure 1 is a perspective view showing a wiring board in the present embodiment. Figure 2is a plan view of the coaxial connector in the present embodiment, Figure 3 is a bottom view of the coaxial connector in the present embodiment, Figure 4 is an exploded perspective view of the coaxial connector in the present embodiment, viewed from below. Figure 5 is a plan view showing a modification of the coaxial connector in the present embodiment.

[0047] As Figure 1 shown, the wiring board 1 in the present embodiment is provided with a wiring board main body 10, and a coaxial connector 20 mounted to the wiring board main body 10. As described later, the wiring board 1 can be used, for example, as a performance board 120, a test module 141 of an electronic component testing device 100 (see Figure 19 ).

[0048] The wiring board main body 10 is a kind of printed wiring board, provided with: an insulating substrate 11 having electrical insulating properties; and wiring patterns 12, 13 (see Figure 15 ) provided on a main surface 11a of the insulating substrate 11. The coaxial connector 20 is electrically connected to the wiring patterns 12, 13 in a state of being fixed to the wiring board main body 10.

[0049] Further, the number of coaxial connectors 20 mounted to the wiring board main body 10 is not particularly limited, and any number of coaxial connectors 20 can be mounted to the wiring board main body 10. For example, in the case of use for the electronic component testing device 100, the number of coaxial connectors 20 mounted to the wiring board main body 10 is set in accordance with the number of sockets 121 (see Figure 19 ) possessed by the electronic component testing device 100, or the like. Further, the use of the wiring board according to the present disclosure is not limited to the electronic component testing device. Also, in the present embodiment, the coaxial connectors 20 are mounted to the main surface of the wiring board main body 10, but this is not limiting, and the coaxial connectors 20 can be mounted to the side surface (edge) of the wiring board main body 10.

[0050] As Figures 2-4 shown, the coaxial connector 20 is provided with: a plurality of coaxial terminals 30; and a housing 70 that holds the coaxial terminals 30. In the present embodiment, 92 coaxial terminals 30 are arranged in a staggered manner.

[0051] Further, the number of coaxial terminals possessed by the coaxial connector is not particularly limited. For example, as Figure 5 shown, the coaxial connector 20B can also have 65 coaxial terminals 30 arranged in a staggered manner. Also, in the present embodiment, the plurality of coaxial terminals 30 are arranged in a staggered manner, but the arrangement of the coaxial terminals is not limited thereto.

[0052] A coaxial cable 90 (see Figure 1) of the other party of the end portion of the coaxial cable 90. The coaxial terminal 91 of the coaxial cable 90 is respectively fitted into the plurality of coaxial terminals 30 of the coaxial connector 20. Thereby, the signal terminal 92 (see Figure 4 ) of the coaxial terminal 91 is electrically connected to the signal terminal 40 (described later) of the coaxial terminal 30 of the coaxial connector 20, and the ground terminal 93 (see Figure 4 ) of the coaxial terminal 91 is electrically connected to the ground terminal 60 (described later) of the coaxial terminal 30 of the coaxial connector 20.

[0053] Figure 6 is a front view of the coaxial terminal in the embodiment, Figure 7 is an exploded perspective view of the coaxial terminal in the embodiment. Figure 8 is a perspective view of the signal terminal in the embodiment, Figure 9 is a front view of the signal terminal and the insulating member in the embodiment. Figure 10 is a perspective view of the coaxial terminal in the embodiment as viewed from the front, Figure 11 is a perspective view of the coaxial terminal in the embodiment as viewed from the back, Figure 12 is a bottom view of the coaxial terminal in the embodiment.

[0054] As shown in Figure 6 and as shown in Figure 7 , the coaxial terminal 30 in the embodiment is provided with a signal terminal 40, an insulating member 50, and a ground terminal 60. The ground terminal 60 surrounds the signal terminal 40 in a cylindrical shape with a prescribed interval. The insulating member 50 is interposed between the signal terminal 40 and the ground terminal 60.

[0055] The signal terminal 40 is formed by, for example, a metal material or the like having electrical conductivity, by performing blanking processing on a metal plate and then performing bending processing. As shown in Figure 8 , the signal terminal 40 is provided with a main body portion 41 extending in the Z direction, a pair of upper side contact pieces 42 extending from the main body portion 41 to the +Z direction side, and a lower side contact piece 43 extending from the main body portion 41 toward the -Z direction side. The main body portion 41, the upper side contact pieces 42, and the lower side contact piece 43 are formed integrally.

[0056] Further, the main body portion 41 in the embodiment corresponds to one example of the "second main body portion" in the present disclosure, the upper side contact pieces 42 in the embodiment correspond to one example of the "fifth contact piece" in the present disclosure, and the lower side contact piece 43 in the embodiment corresponds to one example of the "third contact piece" in the present disclosure.

[0057] A pair of upper side contact pieces 42 protrude from the upper end 411 of the main body portion 41 toward the +Z direction. The pair of upper side contact pieces 42 oppose each other in the X direction and are elastically deformable in a direction away from each other. Further, the upper side contact pieces 42 each have a substantially "U"-shaped contact portion 421 at a front end thereof, and the spacing between the upper side contact pieces 42 narrows as the front end is approached, and the contact portions 421 become closest to each other. Further, each of the upper side contact pieces 42 has a claw portion 422 protruding toward the Y direction in the vicinity of a root portion of the upper side contact piece 42.

[0058] When the opposing coaxial terminal 91 is fitted to the coaxial terminal 30, the signal terminal 92 (see Figure 4 ) of the coaxial terminal 91 enters between the pair of upper side contact pieces 42 while spreading apart. Further, the signal terminal 40 is electrically connected to the signal terminal 92 of the opposing coaxial terminal 91 by being sandwiched between the contact portions 421 of the pair of upper side contact pieces 42.

[0059] In contrast, the lower side contact piece 43 is connected to the lower end 412 of the main body portion 41 via a root portion 431. The lower side contact piece 43 protrudes from the lower end 412 of the main body portion 41 toward the obliquely downward direction by being bent at the root portion 431. The lower side contact piece 43 is elastically deformable toward the upward direction about the root portion 431 as a fulcrum. Further, the lower side contact piece 43 has a substantially "U"-shaped contact portion 432 at a front end thereof. The contact portion 432 contacts the signal wiring pattern 12 (see Figure 15 ) of the wiring board main body 10 when the coaxial connector 20 is mounted to the wiring board main body 10.

[0060] The insulating member 50 is formed of a material having electrical insulation properties such as a resin material, and Figure 7 is integrally formed with the signal terminal 40 by a molding method such as insert molding, as shown in Figure 9 . The insulating member 50 has a substantially octagonal shape and covers the main body portion 41 of the signal terminal 40. Note that the shape of the insulating member 50 is not particularly limited to the above shape, and can be a cylindrical shape, for example.

[0061] Further, the insulating member 50 of the present embodiment has an opening portion 51 that is open toward the -Y direction. As shown in Figure 9 , the opening portion 51 has a length that satisfies the following (1) formula, and a portion of the main body portion 41 of the signal terminal 40 is exposed from the insulating member 50 via the opening portion 51.

[0062] L2 ≥ 1 / 2 x LI (1)

[0063] In the above (1), L1 is the length of the insulating member 50 in the axial direction (Z direction) of the coaxial terminal 30, and L2 is the length of the opening portion 51 in the axial direction (Z direction).

[0064] Here, if the coaxial terminal is simply made smaller (reduced in diameter), the insulating member sandwiched between the signal terminal and the ground terminal becomes thin, and thus the impedance of the coaxial terminal decreases. In contrast, in the present embodiment, by forming the opening portion 51 of the insulating member 50 so as to satisfy the above (1), air having a relative permittivity lower than that of resin is allowed to be interposed between the signal terminal 40 and the ground terminal 60, and thus even if the coaxial terminal 30 is made smaller, the impedance of the coaxial terminal 30 can be maintained.

[0065] Further, it is preferable that the opening portion 51 has a width that satisfies the following (2). By this, the opening portion 51 can be made large enough.

[0066] W2 > W1 (2)

[0067] In the above (2), W1 is the width of the portion of the main body portion 41 that is exposed through the opening portion 51, and is the width in the width direction (X direction) that is substantially orthogonal to the axial direction (Z direction) of the coaxial terminal 30. Further, W2 is the width of the opening portion 51 in the width direction (X direction).

[0068] As shown in Figs. 1 and 2, the signal terminal 40 is formed by overlapping two half-cylindrical members 41, 45. The signal terminal 40 has a substantially octagonal cylindrical main body portion 41 that surrounds the coaxial terminal 30 with the insulating member 50 interposed therebetween, and holds the coaxial terminal 30 with the insulating member 50 interposed therebetween. Further, the shape of the signal terminal 40 is not particularly limited to the above shape as long as it is a cylindrical shape, and can be set in accordance with the shape of the insulating member 50, and for example, can be a circular cylindrical shape. Further, the signal terminal 40 can be formed of one member. Figure 6 Figure 7 Figure 10 Figure 11 As shown in Figs. 1 and 2, the signal terminal 40 is formed by overlapping two half-cylindrical members 41, 45. The signal terminal 40 has a substantially octagonal cylindrical main body portion 41 that surrounds the coaxial terminal 30 with the insulating member 50 interposed therebetween, and holds the coaxial terminal 30 with the insulating member 50 interposed therebetween. Further, the shape of the signal terminal 40 is not particularly limited to the above shape as long as it is a cylindrical shape, and can be set in accordance with the shape of the insulating member 50, and for example, can be a circular cylindrical shape. Further, the signal terminal 40 can be formed of one member.

[0069] The first half-cylindrical member 61 is formed, for example, of a metal material or the like having electrical conductivity, by punching a metal plate and then performing bending processing. The first half-cylindrical member 61 has a main body portion 62, a pair of upper contact pieces 63, and a pair of inner contact pieces 64. The main body portion 62 has a half-octagonal cylindrical shape in a manner that follows the outer circumferential surface of the insulating member 50. The upper contact pieces 63 extend from the main body portion 62 toward the +Z direction side. On the other hand, the inner contact pieces 64 extend from the main body portion 62 toward the -Z direction side. The main body portion 62, the upper contact pieces 63, and the inner contact pieces 64 are formed integrally.

[0070] ​​​A pair of upper contact pieces 63 protrude from the upper end 621 of the main body portion 62 toward the +Z direction. The upper contact pieces 63 are arranged at both ends in the circumferential direction of the main body portion 62, are opposed to each other in the X direction, and are elastically deformable in directions away from each other. In addition, the upper contact pieces 63 each have a substantially "U"-shaped contact portion 631 at the front end, which is inclined toward the inside as it approaches the front end. When the counterpart coaxial terminal 91 is fitted into the coaxial terminal 30, the contact portion 631 is electrically connected to the ground terminal 93 (see FIG. 6) of the counterpart coaxial terminal 91. Figure 12 ) electrically connected.

[0071] In addition, a pair of lower cutout portions 623 are formed at the lower end 622 of the main body portion 62. The root portions 641 of the inner contact pieces 64 are connected to the upper edges of the lower cutout portions 623, and the inner contact pieces 64 are bent outward at the root portions 641. In addition, each of the inner contact pieces 64 has a bent portion 642 bent inward, and has a substantially "L"-shaped overall shape. The inner contact pieces 64 are elastically deformable upward about the root portions 641 and the bent portions 642 as fulcrums. In addition, the inner contact pieces 64 each have a contact portion 643 at the front end. When the coaxial connector 20 is mounted to the wiring board main body 10, the contact portions 643 are brought into contact with the ground wiring pattern 13 (see FIG. 6) of the wiring board main body 10. Figure 10 ) electrically connected.

[0072] In addition, the main body portion 62 has a pair of protrusion portions 624. The protrusion portions 624 are formed near both ends of the main body portion 62, and protrude toward the outside (X direction) of the main body portion 62.

[0073] Like the first half-tube member 61 described above, the second half-tube member 65 is also formed of a material having electrical conductivity, such as a metal material, by punching a metal plate and then bending it. The second half-tube member 65 has a main body portion 66 and a pair of outer contact pieces 67. The main body portion 66 has a semi-octagonal cylindrical shape in such a manner as to follow the outer circumferential surface of the insulating member 50. The lower outer contact piece 67 protrudes from the main body portion 66 toward the -Z direction side. The main body portion 62 and the outer contact pieces 67 are formed integrally with each other. In addition, the second half-tube member 65 does not have an upper contact piece.

[0074] As with the main body portion 62 of the first half-tube member 61 described above, a pair of lower side cutout portions 663 are formed at the lower end 662 of the main body portion 66. The root portions 671 of the outer side contact pieces 67 are connected to the upper edges of the lower side cutout portions 663, and the outer side contact pieces 67 are bent inward at the root portions 671. Further, each of the outer side contact pieces 67 has a bent portion 672 bent outward, and has a substantially "L" shape as a whole. The outer side contact pieces 67 are elastically deformable toward the upper side with the root portions 671 and the bent portions 672 as fulcrums. Further, the outer side contact pieces 67 have contact portions 673 at the front ends thereof. When the coaxial connector 20 is mounted to the wiring board main body 10, the contact portions 673 come into contact with the ground wiring pattern 13 (see Fig. 1) of the wiring board main body 10. Figure 11 ).

[0075] Further, the main body portion 66 has an upper side cutout portion 664, a plurality of (four in this example) claw portions 665, and a pair of through holes 666. The upper side cutout portion 664 is disposed at the center in the circumferential direction of the main body portion 66 and opens at the upper end 661 of the main body portion 66. The claw portions 665 protrude toward the +Y direction from both ends of the main body portion 66, respectively. The through holes 666 are formed near both ends of the main body portion 66 in a manner corresponding to the protrusion portions 624 of the first half-tube member 61 described above.

[0076] In this embodiment, the upper side cutout portion 664 of the main body portion 66 satisfies the following (3) formula, and as shown in Fig. 6, a portion of the signal terminal 40 covered by the main body portion 60a of the ground terminal 60 is exposed via the upper side cutout portion 664. Thus, even after the miniaturization of the coaxial terminal 30, the size of the coupling portion 73 (described later) of the housing 70 described later can be maintained or made thicker, and thus the coaxial terminal 30 can be reliably pressed into and fixed to the housing 70. Figure 12

[0077] W4 > W3 (3)

[0078] In the above (3) formula, W3 is the width of the portion of the signal terminal 40 opposite the upper side cutout portion 664, and is the width in the width direction (X direction) substantially orthogonal to the axial direction (Z direction) of the coaxial terminal 30, and W4 is the width of the upper side cutout portion 664 in the width direction (X direction).

[0079] As described above, the ground terminal 60 is configured by overlapping the first and second half-tube members 61 and 65 described above. Specifically, as shown in Fig. 6, the first half-tube member 61 is disposed so that the main body portion 62 thereof is in contact with the main body portion 66 of the second half-tube member 65, and the protrusion portions 624 of the first half-tube member 61 are fitted into the through holes 666 of the second half-tube member 65. Figure 12 ​As shown, with the signal terminal 40 covered by the insulating member 50 sandwiched between the first and second semi-cylindrical members 61 and 65, a grounding terminal 60 is formed by overlapping the first semi-cylindrical member 61 and the second semi-cylindrical member 65. At this time, the two ends of the second semi-cylindrical member 65 overlap with the outer sides of the two ends of the first semi-cylindrical member 61, and the protrusion 624 of the first semi-cylindrical member 61 engages with the through hole 666 of the second semi-cylindrical member 65, thereby fixing the first and second semi-cylindrical members 61 and 65.

[0080] Furthermore, in this embodiment, as described above, although the coaxial terminal 30 is assembled before being inserted into the housing 70, the timing of assembling the coaxial terminal 30 is not particularly limited to this. For example, as described in Japanese Patent Application Publication No. 2013-26145, the first and second half-cylinder components 61 and 65 can also be fixed by inserting the coaxial terminal 30 into the housing 70.

[0081] The grounding terminal 60 of the coaxial terminal 30 assembled as described above has a generally octagonal cylindrical body portion 60a formed by the main body portions 62 and 66 of the first and second semi-cylindrical components 61 and 65. Figure 13 As shown, a pair of inner contact pieces 64 are arranged symmetrically about an imaginary straight line VL0. Similarly, a pair of outer contact pieces 67 are also arranged symmetrically about an imaginary straight line VL0. Furthermore, the imaginary straight line VL0 is an imaginary straight line that passes through the center of the coaxial terminal 30 and is substantially parallel to the Y direction. The imaginary straight line VL0 in this embodiment corresponds to an example of the "centerline of the coaxial terminal" in this disclosure.

[0082] Moreover, such as Figure 14 and Figures 1-4 As shown, the inner contact piece 64 extends radially inward and downward from the generally octagonal cylindrical body portion 60a toward the body portion 60a. More specifically, the inner contact piece 64 bends outward at its root 641 toward the generally octagonal cylindrical body portion 60a, the portion from the root 641 to the bend 642 is located outside the body portion 60a, and bends inward at the bend 642 toward the body portion 60a. Therefore, as... Figure 13 As shown, when viewed along the axial direction (Z direction) of the coaxial terminal 30, the contact portion 643 at the front end of the inner contact piece 64 is located inside the main body portion 60a, which is approximately octagonal in shape.

[0083] In contrast, such as Figure 14 and Figure 4As shown, the outer side contact piece 67 extends from the substantially octagonal cylindrical shaped main body portion 60a toward the radially outer side of the main body portion 60a and toward the lower side of the main body portion 60a. More specifically, the outer side contact piece 67 is bent toward the inner side of the main body portion 60a at a root portion 671, the portion between the root portion 671 and a bent portion 672 is located on the inner side of the main body portion 60a, and the outer side contact piece 67 is bent toward the outer side of the main body portion 60a at the bent portion 672. Thus, as shown, when viewed in the axial direction (Z direction) of the coaxial terminal 30, the contact portion 673 of the tip end of the outer side contact piece 67 is located on the outer side of the main body portion 60a. Figure 2

[0084] As shown, when viewed in the axial direction (Z direction) of the coaxial terminal 30, the lower side contact piece 43 of the signal terminal 40 is located on the inner side of the main body portion 60a of the ground terminal 60. The lower side contact piece 43 extends from the lower end 412 of the main body portion 41 of the signal terminal 40 toward the -Y direction (the direction from the inner side contact piece 64 toward the outer side contact piece 67) side along the Y direction. Figure 2

[0085] The main body portion 60a in the embodiment corresponds to one example of the "first main body portion" in the present disclosure. In addition, the upper side contact piece 63 in the present embodiment corresponds to one example of the "fourth contact piece" in the present disclosure, the inner side contact piece 64 in the present embodiment corresponds to one example of the "second contact piece" in the present disclosure, and the outer side contact piece 67 in the present embodiment corresponds to one example of the "first contact piece" in the present disclosure.

[0086] Figure 4 is an enlarged sectional view showing the housing in the present embodiment, Figures 15-18 is an enlarged plan view showing the holding holes of the housing in the present embodiment.

[0087] The housing 70 is formed of a material having electrical insulation, such as a resin material, as shown in Figure 15 has a substantially rectangular parallelepiped shape. A plurality of (in this case, 92) holding holes 71 are formed in the housing 70. In addition, a plurality of (in this case, 6) fixing pins 80, which are referred to as crimping portions or the like, for fixing the coaxial connector 20 to the wiring board main body 10 are embedded in the housing 70.

[0088] As shown in Figure 16 and Figure 17 each holding hole 71 penetrates the housing 70 in the up-down direction (Z direction). The holding hole 71 has an octagonal cross-sectional shape with an inner diameter corresponding to the outer diameter of the ground terminal 60, or a circular cross-sectional shape with an inner diameter corresponding to the outer shape of the coaxial terminal 91, which is the counterpart terminal.

[0089] ​​In addition, a substantially cylindrical holding portion 72 is provided inside the holding hole 71. The holding portion 72 is connected to the inner peripheral surface of the holding hole 71 via a connecting portion 73. Further, a through-hole 721 is formed in the holding portion 72, which penetrates the holding portion 72 in the up-down direction (Z direction). The through-hole 721 has a circular cross-sectional shape with an inner diameter corresponding to the outer diameter of the signal terminal 40.

[0090] Further, when the coaxial terminal 30 is inserted into the housing 70 from below (see Figure 18 ), the ground terminal 60 of the coaxial terminal 30 is inserted into the holding hole 71 from below, and the signal terminal 40 of the coaxial terminal 30 is inserted into the through-hole 721 from below. Further, the connecting portion 73 of the housing 70 is inserted into the upper cutout portion 664 of the ground terminal 60, and the claw portion 665 of the ground terminal 60 is engaged with the inner peripheral surface of the holding hole 71, so that the ground terminal 60 is fixed to the housing 70. In addition, the claw portion 422 of the signal terminal 40 is engaged with the through-hole 721 of the housing 70, so that the signal terminal 40 is fixed to the housing 70.

[0091] The plurality of holding holes 71 are arranged in the housing 70 in a staggered manner. Specifically, as shown in Figures 15-18 , the housing 70 of the present embodiment has five holding hole rows 75A to 75E. Each of the holding hole rows 75A to 75E is composed of a plurality of holding holes 71 arranged at substantially the same pitch PI in the Y direction.

[0092] In Figure 12 , the uppermost first holding hole row 75A has 18 holding holes 71 arranged at equal pitches PI with adjacent to each other. Similarly, the central third holding hole row 75C also has 20 holding holes 71 arranged at equal pitches PI with adjacent to each other. In addition, the lowermost fifth holding hole row 75E also has 18 holding holes 71 arranged at equal pitches PI with adjacent to each other.

[0093] On the other hand, in the second holding hole row 75B counted from the top, 18 holding holes 71 are arranged at equal pitches PI, but there is a space distance portion 76 between the sixth and seventh holding holes 71 counted from the left. Similarly, in the fourth holding hole row 75D counted from the bottom, 18 holding holes 71 are arranged at equal pitches PI, but there is a space distance portion 76 between the seventh and eighth holding holes 71 counted from the right.

[0094] The first to fifth holding hole rows 75A to 75E adjacent to each other are arranged in parallel with the holding holes 71 being staggered by half the pitch P1 / 2 from each other. That is, the holding holes 71 of the holding hole rows 75A to 75E adjacent to each other are arranged so as to be staggered. Here, the sixth and seventh holding holes 71 in the second holding hole row 75B are arranged at a distance corresponding to an integral multiple (in this case, three times) of the pitch P1 of the holding holes 71. Similarly, the seventh and eighth holding holes 71 in the fourth holding hole row 75D are also arranged at a distance corresponding to an integral multiple (in this case, three times) of the pitch P1 of the holding holes 71. Therefore, even if the second and fourth holding hole rows 75B, 75D have the space distance portions 76, the first to fifth holding hole rows 75A to 75E can be arranged regularly with being staggered from each other.

[0095] The fixing pins 80 are arranged on both sides of the first holding hole row 75A. Similarly, the fixing pins 80 are arranged on both sides of the fifth holding hole row 75E. In addition, the fixing pins 80 are arranged in the space distance portion 76 of the above-described second holding hole row 75B. Similarly, the fixing pins 80 are arranged in the space distance portion 76 of the above-described fourth holding hole row 75D. As shown in FIG. 8, these fixing pins 80 are buried in the housing 70, and the front ends thereof protrude downward from the lower surface of the housing 70. Figure 15

[0096] As described above, in the present embodiment, the plurality of fixing pins 80 are arranged at positions which are not point-symmetrical with the center of the upper surface of the housing 70 as the point of symmetry, and thus the coaxial connector 20 can be prevented from being mounted to the wiring board main body 10 by mistake. In addition, in the present embodiment, since the fixing pins 80 are arranged in the holding hole rows 75B, 75D, the coaxial connector 20 can be stably fixed to the wiring board main body 10.

[0097] Figure 12 FIG. 9 is a perspective view of the wiring board from below in the present embodiment. Figure 15 FIG. 10 is a view showing the positional relationship of the coaxial terminal with the wiring pattern and showing the positional relationship of the outer side contact piece and the inner side contact piece of the ground terminal adjacent to each other in the same row. In addition, FIG. 11 is a view showing the positional relationship of the outer side contact piece of the ground terminal with the signal terminal of the row adjacent to each other, Figure 12 FIG. 12 is a view showing the positional relationship of the signal terminal with the inner side contact piece of the row adjacent to each other, Figure 15 FIG. 13 is a view showing the positional relationship of the signal terminal with the inner side contact piece of the row adjacent to each other, Figure 15 FIG. 14 is a view showing the positional relationship of the signal terminal of the row adjacent to each other with each other.

[0098] In addition, the Figure 15 ​The coaxial connector 20 is shown as mounted to the wiring board body 10. In this state, the lower side contact piece 43 of the signal terminal 40 is pressed by the wiring board body 10 and elastically deformed, and each of the contact pieces 64, 67 of the ground terminal 60 is also pressed by the wiring board body 10 and elastically deformed. In contrast to this, Figure 12 The coaxial connector 20 is shown as mounted to the wiring board body 10. In this state, the lower side contact piece 43 of the signal terminal 40 is pressed by the wiring board body 10 and elastically deformed, and each of the contact pieces 64, 67 of the ground terminal 60 is also pressed by the wiring board body 10 and elastically deformed. In contrast to this,

[0099] The coaxial connector 20 described above is mounted to the wiring board body 10. By inserting the fixing pin 80 protruding from the housing 70 into the mounting hole (not shown) of the insulating substrate 11, the coaxial connector 20 is fixed to the insulating substrate 11.

[0100] In the present embodiment, as shown in Figure 16 the state in which the coaxial connector 20 is mounted to the wiring board body 10, the contact portion 432 of the lower side contact piece 43 of the signal terminal 40 is in contact with the signal wiring pattern 12 of the wiring board body 10. At this time, the lower side contact piece 43 is elastically deformed with the root portion 431 as a fulcrum, and the contact portion 432 is pressed against the signal wiring pattern 12, so that the signal terminal 40 is electrically connected to the signal wiring pattern 12. In addition, by the elastic deformation of this lower side contact piece 43, the contact portion 432 of the lower side contact piece 43 moves in the -Y direction compared to the state before the coaxial connector 20 is mounted to the wiring board body 10 (see Figure 16 ).

[0101] In addition, in the state in which the coaxial connector 20 is mounted to the wiring board body 10, the contact portion 643 of the inner side contact piece 64 of the ground terminal 60 is in contact with the ground wiring pattern 13 of the wiring board body 10. At this time, the inner side contact piece 64 is elastically deformed with the root portion 641 and the bent portion 642 as fulcrums, so that the contact portion 643 is pressed against the ground wiring pattern 13.

[0102] Likewise, in the state in which the coaxial connector 20 is mounted to the wiring board body 10, the contact portion 673 of the outer side contact piece 67 of the ground terminal 60 is in contact with the ground wiring pattern 13 of the wiring board body 10. At this time, the outer side contact piece 67 is elastically deformed with the root portion 671 and the bent portion 672 as fulcrums, so that the contact portion 673 is pressed against the ground wiring pattern 13.

[0103] As described above, by the contact portions 643, 673 of the inner side contact piece 64 and the outer side contact piece 67 being pressed against the ground wiring pattern 13, the ground terminal 60 is electrically connected to the ground wiring pattern 13. Furthermore, in the present embodiment, as shown in Figure 16As shown, the signal wiring pattern 12 of the wiring board body 10 has a generally rectangular planar shape, while the grounding wiring pattern 13 has a generally "U"-shaped planar shape and surrounds the signal wiring pattern 12. The signal wiring pattern 12 in this embodiment corresponds to an example of the "first wiring pattern" in this disclosure, and the grounding wiring pattern 13 in this embodiment corresponds to an example of the "second wiring pattern" in this disclosure.

[0104] In this embodiment, the elastic deformation of the outer contact piece 67, as described above, corresponds to the state before the coaxial connector 20 is installed on the wiring board body 10 (see...). Figure 16 In contrast, the contact portion 673 of the outer contact piece 67 moves radially outward toward the main body portion 60a.

[0105] Therefore, in this embodiment, when viewed from above (when viewing the wiring board 10 along the normal direction (Z direction) of the wiring board body 10), the coaxial terminal 30 ( Figure 16 A portion of the outer contact piece 67 of the coaxial terminal 30A in the middle is connected to the adjacent coaxial terminal 30. Figure 17 A portion of the inner contact piece 64 of the coaxial terminal 30B overlaps with the inner contact piece 64 of the coaxial terminal 30A. More specifically, in a perspective view, the contact portion 673 of the outer contact piece 67 of the coaxial terminal 30A overlaps with the bent portion 642 of the inner contact piece 64 of the adjacent coaxial terminal 30B. In this state, the outer contact piece 67 of the coaxial terminal 30A does not contact the inner contact piece 64 of the adjacent coaxial terminal 30B. Furthermore, the coaxial terminals 30A and 30B are inserted into the same row of retaining holes (…). Figure 17 The coaxial terminals 30 of the retaining holes 71 adjacent to each other in the retaining hole row 75A).

[0106] As described above, by overlapping the outer contact pieces 67 and inner contact pieces 64 of adjacent coaxial terminals 30, the spacing between the coaxial terminals 30 can be reduced, thus enabling a high-density arrangement of the coaxial terminals 30. Furthermore, by overlapping the outer contact pieces 67 and inner contact pieces 64 of adjacent coaxial terminals 30, the outer contact pieces 67 and inner contact pieces 64 can be tightly sandwiched between the signal terminals 40, thereby improving the shielding performance of the coaxial terminals 30.

[0107] Furthermore, in this embodiment, the elastic deformation of the inner contact piece 64, compared to the state before the coaxial connector 20 is installed on the wiring board body 10, results in... Figure 17Compared to (see above), the contact portion 643 of the inner contact piece 64 moves radially inward toward the main body portion 60a. Therefore, in this embodiment, when viewed from above, a portion of each pair of inner contact pieces 64 of the coaxial terminal 30 overlaps with a portion of the signal terminal 40 of the same coaxial terminal 30. More specifically, the contact portions 643 of each pair of inner contact pieces 64 overlap with the lower end 412 of the main body portion 41 of the signal terminal 40. Furthermore, in this state, the inner contact pieces 64 do not contact the main body portion 41 of the signal terminal 40.

[0108] As described above, the pair of inner contact pieces 64 of the coaxial terminal 30 overlap with the signal terminal 40, thereby allowing the inner contact pieces 64 to be tightly clamped between the signal terminals 40, thus improving the shielding performance of the coaxial terminal 30. Furthermore, the overlap of the pair of inner contact pieces 64 of the coaxial terminal 30 with the signal terminal 40 enables the miniaturization of the coaxial terminal 30 itself, thus achieving a high density of coaxial terminals 30 in the coaxial connector 20.

[0109] In addition, in this embodiment, such as Figure 18 As shown, in perspective view from above, the coaxial terminal 30 ( Figure 18 The contact portion 673 of the outer contact piece 67 of one side (lower side in the figure) of the grounding terminal 60 of the coaxial terminal 30A is located on the imaginary straight line VL1. This imaginary straight line VL1 is an imaginary straight line that passes through the coaxial terminal 30 (… Figure 18 The contact portion 432 of the signal terminal 40 of the coaxial terminal 30A and the adjacent row of retaining holes ( Figure 18 The coaxial terminal 30 (of the retaining hole row 75B) Figures 15-18 The imaginary straight line VL1 passes through the contact portion 432 of the signal terminal 40 of the coaxial terminal 30C. Specifically, the imaginary straight line VL1 passes through the end of the contact portion 432 of the coaxial terminal 30A adjacent to the front end of the coaxial terminal 30C side (lower side in the figure) and the end of the contact portion 432 of the coaxial terminal 30C adjacent to the front end of the coaxial terminal 30A side (upper side in the figure).

[0110] As described above, the contact portion 673 of the outer contact piece 67 of one side of the grounding terminal 60 of the coaxial terminal 30A is sandwiched between the contact portions 432 of the signal terminals 40 of the coaxial terminals 30A and 30C in adjacent columns, thereby improving the shielding effect between the coaxial terminals 30 in adjacent columns. The imaginary straight line VL1 in this embodiment corresponds to an example of the "first imaginary straight line" in this disclosure.

[0111] In addition, in this embodiment, such as Figure 19 As shown, in perspective view from above, the coaxial terminal 30 ( Figure 19A portion of the signal terminal 40 of the coaxial terminal 30A is located on an imaginary straight line VL2. This imaginary straight line VL2 is an imaginary straight line that extends in a direction (X direction) substantially orthogonal to the arrangement direction (Y direction) of the coaxial terminals 30 forming the same column, and passes through the coaxial terminals 30 of adjacent columns (…). Figure 19 The contact portion 643 of the inner contact piece 64 of the grounding terminal 60 of the coaxial terminal 30C).

[0112] As described above, by arranging the signal terminal 40 of the coaxial terminal 30A on an imaginary straight line VL2 passing through the contact portion 432 of a pair of inner contact pieces 43 of the ground terminal 60 of the coaxial terminal 30C in an adjacent column, the spacing between the coaxial terminals 30 can be reduced, thus enabling miniaturization of the coaxial connector 20. The imaginary straight line VL2 in this embodiment corresponds to an example of the "second imaginary straight line" in this disclosure.

[0113] Furthermore, in this embodiment, as Figure 19 As shown, in perspective view from above, the coaxial terminal 30 ( ​ A portion of the signal terminal 40 of the coaxial terminal 30A is located on an imaginary straight line VL3. This imaginary straight line VL3 is an imaginary straight line that extends in a direction (X direction) substantially orthogonal to the arrangement direction (Y direction) of the coaxial terminals 30 forming the same row, and passes through adjacent rows of retaining holes (…). ​ The coaxial terminal 30 (of the retaining hole row 75B) ​ A portion of the signal terminal 40 (more specifically, the lower end 412 of the main body 41 of the signal terminal 40) of the coaxial terminal 30C.

[0114] As described above, by arranging the signal terminals 40 of the coaxial terminals 30A and 30C of adjacent columns on the straight line VL3, the spacing between the coaxial terminals 30 can be reduced, and the coaxial connector 20 can be miniaturized.

[0115] In addition, in this embodiment, such as ​ As shown, in a perspective top view, the root 431 of the signal terminal 40 of one of the coaxial terminals 30B is sandwiched between the contact portions 432 of the lower contact pieces 43 of each signal terminal 40 of the coaxial terminals 30 (coaxial terminals 30A and 30B in the figure) that are adjacent to each other in the Y direction, and the root 431 overlaps with the contact portions 643 of a pair of inner contact pieces 64 of the ground terminal 61 of the coaxial terminal 30B.

[0116] As described above, by overlapping the root portion 431 of the signal terminal 40 of the coaxial terminal 30B with the contact portion 643 of the inner contact piece 64 of the ground terminal 61 of the coaxial terminal 30B, the inner contact piece 64 can be tightly sandwiched between the signal terminals 40, and thus the crosstalk between the adjacent coaxial terminals 30A, 30B in the X direction can be reduced. In addition, by overlapping the root portion 431 of the signal terminal 40 of the coaxial terminal 30B with the contact portion 643 of the inner contact piece 64 of the ground terminal 61 of the coaxial terminal 30B, the coaxial terminal 30 itself can be downsized, and thus the high density of the coaxial terminals 30 in the coaxial connector 20 can be achieved.

[0117] ​ is a schematic diagram showing the structure of an electronic component testing device in the present embodiment.

[0118] The wiring board 1 provided with the coaxial connector 20 described above can be used as ​ the performance board 120 and the test module 141 of the electronic component testing device 100 shown in

[0119] As ​ shown, the electronic component testing device 100 is provided with a test head 110 and a tester 150, and the test head 110 is provided with the performance board 120, a mother board 130, and a test head main body 140. In addition, ​ The structure of the electronic component testing device 100 shown in

[0120] A plurality of sockets 121 that press the DUT 200 by a handler (not shown) are installed on the upper surface of the performance board 120. As a specific example of the test object, i.e., the DUT 200, there is no particular limitation, but a SoC (System on a chip), a logic-type device, or a storage-type device can be exemplified. A plurality of coaxial connectors 122 are installed on the lower surface of the performance board 120. The sockets 121 and the coaxial connectors 122 are electrically connected via a wiring pattern (not shown) or the like. As the coaxial connectors 122, the coaxial connector 20 described above can be used.

[0121] The mother board 130 has a plurality of coaxial cables 131. The coaxial cables 131 have the same structure as the coaxial cable 90 described above. The upper ends of the coaxial cables 131 are held by a bracket 132 provided on the upper portion of the mother board 130, and the lower ends of the coaxial cables 131 are also held by a bracket 133 provided on the lower portion of the mother board 130. When the performance board 120 is installed on the mother board 130, the coaxial connectors 122 of the performance board 120 are fitted with the coaxial terminals of one end of the coaxial cables 131 of the mother board 130.

[0122] The test head main body 140 has a plurality of test modules 141 (test circuit cards). A coaxial connector 142 is mounted to the upper edge of each test module 141. When the mother board 130 is mounted to the test head main body 140, the coaxial terminals of the other ends of the coaxial cables 131 of the mother board 130 are fitted into the coaxial connectors 142 of the test head main body 140. As the coaxial connector 142, the above-described coaxial connector 20 can be used. Each test module 141 is connected to the tester 150 via a cable 151, generates a test signal according to an instruction from the tester 150, and outputs to the DUT 200.

[0123] As described above, in the present embodiment, a portion of the outer side contact piece 67 of the coaxial terminal 30 overlaps a portion of the inner side contact piece 64 of the adjacent coaxial terminal 30 when viewed from above, and thus the interval between the adjacent coaxial terminals 30 can be reduced, and the coaxial terminals 30 can be arranged at high density. In addition, in the present embodiment, the outer side contact piece 67 and the inner side contact piece 64 can be tightly sandwiched between the adjacent signal terminals 40, and thus the shielding performance of the coaxial terminal 30 can be improved. Thus, in the present embodiment, the coaxial terminals 30 can be arranged at high density, and the desired electrical characteristics can be ensured.

[0124] Furthermore, the above-described embodiments are described for easy understanding of the present disclosure, and are not described for limiting the present disclosure. Thus, each element disclosed in the above-described embodiments also includes all design changes and equivalents belonging to the technical scope of the present disclosure.

[0125] Symbol Explanation

[0126] 1 Wiring board

[0127] 10 Wiring board main body

[0128] 12 Signal wiring pattern

[0129] 13 Ground wiring pattern

[0130] 20, 20B Coaxial connector

[0131] 30 Coaxial terminal

[0132] 40 Signal terminal

[0133] 41 Main body portion

[0134] 42 Upper side contact piece

[0135] 43 Lower side contact piece

[0136] 50 Insulating member

[0137] 60 Ground terminal

[0138] 60a main body portion

[0139] 63 upper side contact piece

[0140] 64 inner side contact piece

[0141] 641 root portion

[0142] 642 curved portion

[0143] 643 contact portion

[0144] 67 outer side contact piece

[0145] 671 root portion

[0146] 672 curved portion

[0147] 673 contact portion

[0148] 70 housing

[0149] 100 electronic component testing device

Claims

1. A wiring board comprising a wiring board body and a coaxial connector mounted on the wiring board body, characterized in that, The coaxial connector includes: Multiple coaxial terminals; and Housing that holds the coaxial terminals, The plurality of coaxial terminals are arranged in at least one column. The coaxial terminal includes: Signal terminals; and A grounding terminal, which is spaced apart and covers the signal terminal. The grounding terminal includes: The first main body is cylindrical; and The first contact piece and the second contact piece each have a first contact portion and a second contact portion that contact the main body of the wiring board, and each extends from the first main body portion. In a perspective top view of the wiring board along the normal direction of the wiring board body, a portion of the first contact piece of the coaxial terminal overlaps with a portion of the second contact piece of the adjacent coaxial terminal.

2. The wiring board according to claim 1, characterized in that, The first contact piece also has: The first contact portion is located on the outside of the first main body portion in the perspective top view; The first root portion is connected to the first main body portion; as well as The first curved portion is sandwiched between the first contact portion and the first root portion, and is located inside the first main body portion in the perspective top view. The second contact piece also has: The second contact portion is located inside the first main body portion in the perspective top view; The second root portion is connected to the first main body portion; as well as The second curved portion, sandwiched between the second contact portion and the second root portion, is located on the outside of the first main body portion in the perspective top view. In the perspective top view, the first contact portion of the coaxial terminal overlaps with the second curved portion of the adjacent coaxial terminal.

3. The wiring board according to claim 1 or 2, characterized in that, The plurality of coaxial terminals are arranged in a manner that forms a plurality of columns arranged side by side with each other. The coaxial terminals of adjacent columns are arranged in a staggered manner. The signal terminal includes: Second main body section; as well as The third contact piece has a third contact portion that contacts the main body of the wiring board and extends from the second main body portion. In the perspective top view, the first contact portion of the coaxial terminal is located on a first imaginary straight line. The first imaginary straight line is an imaginary straight line that passes through the third contact portion of the coaxial terminal and the third contact portion of the coaxial terminals of the adjacent column.

4. The wiring board according to claim 3, characterized in that, The third contact piece extends from the second main body towards the first direction side when viewed from above. The first direction is a direction substantially parallel to the arrangement direction of the coaxial terminals forming the same row in the perspective top view, and is the direction from the second contact piece toward the first contact piece.

5. The wiring board according to claim 1 or 2, characterized in that, The coaxial terminal has a pair of second contact pieces. In the perspective view, portions of the pair of second contact pieces of the grounding terminal overlap with portions of the signal terminal.

6. The wiring board according to claim 1 or 2, characterized in that, The plurality of coaxial terminals are arranged in a manner that forms a plurality of columns arranged side by side with each other. The coaxial terminals of adjacent columns are arranged in a staggered manner. In the perspective top view, a portion of the signal terminal of the coaxial terminal is located on the second imaginary straight line. The second imaginary straight line is an imaginary straight line that extends in a direction substantially orthogonal to the arrangement direction of the coaxial terminals forming the same column, and passes through the second contact portion of the coaxial terminals of the adjacent column.

7. The wiring board according to claim 1 or 2, characterized in that, The plurality of coaxial terminals are arranged in a manner that forms a plurality of columns arranged side by side with each other. The coaxial terminals of adjacent columns are arranged in a staggered manner. In the aforementioned perspective top view, a portion of the signal terminal of the coaxial terminal is located on a third imaginary straight line. The third imaginary straight line is an imaginary straight line that extends in a direction substantially orthogonal to the arrangement direction of the coaxial terminals forming the same column, and passes through a portion of the signal terminals of the coaxial terminals in adjacent columns.

8. The wiring board according to claim 1 or 2, characterized in that, The grounding terminal has a fourth contact piece that extends from the first main body portion to a side opposite to the first and second contact pieces.

9. The wiring board according to claim 1 or 2, characterized in that, The signal terminal has: Second main body section; The third contact piece has a third contact portion that contacts the main body of the wiring board and extends from the second main body portion; as well as The fifth contact piece extends from the second main body portion to the side opposite to the third contact piece.

10. The wiring board according to claim 1 or 2, characterized in that, The coaxial terminal includes: A pair of first contact pieces; and A pair of second contact pieces, The pair of first contact tabs are arranged symmetrically with respect to the centerline of the coaxial terminal in a perspective top view, the centerline of the coaxial terminal extending in a direction substantially parallel to the arrangement direction of the coaxial terminals forming the same row. The pair of second contact pieces are also symmetrically arranged relative to the center line in the perspective top view.

11. The wiring board according to claim 1 or 2, characterized in that, The coaxial terminal has an insulating component sandwiched between the signal terminal and the ground terminal.

12. The wiring board according to claim 3, characterized in that, The wiring board body has: A first wiring pattern, which contacts the first contact portion and the second contact portion of the grounding terminal; and The second wiring pattern contacts the third contact portion of the signal terminal.

13. An electronic component testing apparatus for testing a digital under-mounted device (DUT), characterized in that, The electronic component testing apparatus comprises a wiring board according to any one of claims 1 to 12.

14. A coaxial connector comprising a plurality of coaxial terminals and a housing for retaining the coaxial terminals, characterized in that, The plurality of coaxial terminals are arranged in at least one column. The coaxial terminal includes: Signal terminals; and A grounding terminal, which is spaced apart and covers the signal terminal. The grounding terminal includes: The first main body is cylindrical; and The first contact piece and the second contact piece each have a first contact portion and a second contact portion at their front ends, and each extends from the first main body portion. When the coaxial connector is mounted on the wiring board body to form a wiring board, in a perspective top view of the wiring board along the normal direction of the wiring board body, a portion of the first contact piece of the coaxial terminal overlaps with a portion of the second contact piece of the adjacent coaxial terminal.

Images