WO2022201846A1 - Connecteur pour inspection - Google Patents

Connecteur pour inspection Download PDF

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Publication number
WO2022201846A1
WO2022201846A1 PCT/JP2022/003195 JP2022003195W WO2022201846A1 WO 2022201846 A1 WO2022201846 A1 WO 2022201846A1 JP 2022003195 W JP2022003195 W JP 2022003195W WO 2022201846 A1 WO2022201846 A1 WO 2022201846A1
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WO
WIPO (PCT)
Prior art keywords
barrel
socket
signal pin
conductor
vertical direction
Prior art date
Application number
PCT/JP2022/003195
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English (en)
Japanese (ja)
Inventor
聖人 荒木
真一 剱崎
Original Assignee
株式会社村田製作所
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Filing date
Publication date
Application filed by 株式会社村田製作所 filed Critical 株式会社村田製作所
Publication of WO2022201846A1 publication Critical patent/WO2022201846A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/06—Measuring leads; Measuring probes
    • G01R1/067—Measuring probes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
    • H01R13/6473—Impedance matching

Definitions

  • the present invention relates to an inspection connector used for measuring high frequency signals.
  • the probe described in Patent Literature 1 includes a central conductor, an outer cylinder, a first bush and a second bush.
  • the outer cylinder has a cylindrical shape with a vertically extending central axis.
  • the center conductor extends vertically within the outer cylinder.
  • the first bush is provided near the lower end of the outer cylinder.
  • the first bushing is supported by the outer cylinder and supports the center conductor.
  • the second bush is provided near the upper end of the outer cylinder.
  • a second bushing is supported on the outer cylinder and supports the discontinued conductor. Thereby, the outer cylinder and the central conductor are insulated.
  • a high frequency signal is applied to the center conductor.
  • the outer cylinder is connected to ground potential.
  • the second bush is provided near the upper end of the outer cylinder.
  • the second bushing is supported by the outer cylinder and supports the center conductor. Therefore, a second bush having a dielectric constant greater than that of air is provided between the outer cylinder and the central conductor. Therefore, the capacitance between the outer cylinder and the center conductor tends to increase. Therefore, if the outer cylinder is made thin for miniaturization of the probe, a large capacitance is formed between the outer cylinder and the central conductor. As a result, the deviation of the characteristic impedance generated in the central conductor from the predetermined characteristic impedance (eg, 50 ⁇ ) may increase. As described above, in the probe described in Patent Document 1, it is difficult to make the outer cylinder thin, so it is difficult to reduce the size of the probe.
  • the predetermined characteristic impedance eg, 50 ⁇
  • an object of the present invention is to provide an inspection connector that can be miniaturized.
  • An inspection connector includes: connected to the end of a coaxial cable comprising a center conductor, an outer conductor surrounding the center conductor, an insulator insulating the center conductor and the outer conductor, and a coating surrounding the outer conductor
  • a test connector comprising: The inspection connector includes one or more probes, each of the one or more probes a barrel electrically connected to the outer conductor, the barrel having a cylindrical shape extending in the vertical direction; a socket secured to the center conductor and positioned within the barrel so as to be electrically connected to the center conductor; A signal pin secured to and extending downwardly from the socket for electrical connection with the socket, at least a portion of the signal pin positioned within the barrel a signal pin and an insulating support member provided below the center in the vertical direction between the upper end of the socket and the lower end of the signal pin, supported by the barrel, and supporting the signal pin; contains at least one of the outer conductor and the coating is fixed to the barrel by inserting the end of the coaxial cable into the barrel
  • shafts and members extending in the front-rear direction do not necessarily indicate only shafts and members parallel to the front-rear direction.
  • a shaft or member extending in the front-rear direction is a shaft or member that is inclined within a range of ⁇ 45° with respect to the front-rear direction.
  • the vertically extending shafts and members refer to shafts and members that are inclined within a range of ⁇ 45° with respect to the vertical direction.
  • a shaft or member extending in the left-right direction means a shaft or member that is inclined within a range of ⁇ 45° with respect to the left-right direction.
  • the first to third members constitute an inspection unit.
  • the first member and the second member arranged in the front-rear direction indicate the following states. It is a state in which both the first member and the second member are arranged on an arbitrary straight line indicating the front-rear direction when the first member and the second member are viewed in a direction perpendicular to the front-rear direction.
  • the first member and the second member arranged in the front-rear direction when viewed in the vertical direction indicate the following states. Both the first member and the second member are arranged on an arbitrary straight line indicating the front-rear direction when the first member and the second member are viewed in the vertical direction.
  • first member and the second member when the first member and the second member are viewed from the horizontal direction different from the vertical direction, either one of the first member and the second member does not have to be arranged on an arbitrary straight line indicating the front-rear direction. .
  • the 1st member and the 2nd member may contact.
  • the first member and the second member may be separated.
  • a third member may be present between the first member and the second member. This definition also applies to directions other than the fore-and-aft direction.
  • the first member being arranged above the second member refers to the following state. At least a portion of the first member is located directly above the second member. Therefore, when viewed in the vertical direction, the first member overlaps the second member. This definition also applies to directions other than the vertical direction.
  • the first member is arranged above the second member means that at least part of the first member is positioned directly above the second member, and that the first member is positioned above the second member. This includes the case where the first member is positioned obliquely above the second member without being positioned directly above the member. In this case, the first member does not have to overlap the second member when viewed in the vertical direction. For example, diagonally upward means upper left and upper right. This definition also applies to directions other than the vertical direction.
  • each part of the first member is defined as follows.
  • front of the first member is meant the front half of the first member.
  • a rear portion of the first member means the rear half of the first member.
  • the left portion of the first member means the left half of the first member.
  • the right portion of the first member means the right half of the first member.
  • top of the first member is meant the top half of the first member.
  • a lower portion of the first member means a lower half of the first member.
  • the front end of the first member means the front end of the first member.
  • the rear end of the first member means the rearward end of the first member.
  • the left end of the first member means the left end of the first member.
  • the right end of the first member means the right end of the first member.
  • the upper end of the first member means the upper end of the first member.
  • the lower end of the first member means the downward end of the first member.
  • the front end of the first member means the front end of the first member and its vicinity.
  • the rear end of the first member means the rear end of the first member and its vicinity.
  • the left end of the first member means the left end of the first member and its vicinity.
  • the right end of the first member means the right end of the first member and its vicinity.
  • the upper end of the first member means the upper end of the first member and its vicinity.
  • the lower end of the first member means the lower end of the first member and its vicinity.
  • the first member being supported by the second member means that the first member is attached to the second member so as not to move relative to the second member (that is, is fixed). and the case where the first member is attached to the second member so as to be movable relative to the second member.
  • the first member being supported by the second member means that the first member is directly attached to the second member, and that the first member is attached to the second member via the third member. includes both when
  • the first member is held by the second member means that the first member is attached (that is, fixed) to the second member so as not to be movable with respect to the second member. It does not include the case where the first member is movably attached to the second member relative to the second member. Further, the first member is held by the second member means that the first member is directly attached to the second member, and that the first member is attached to the second member via the third member. includes both when
  • the connector for inspection according to the present invention, it is possible to reduce the size of the connector for inspection.
  • FIG. 1 is a rear view of the inspection unit 10.
  • FIG. FIG. 2 is a cross-sectional view of the inspection connector 100.
  • FIG. FIG. 3 is a cross-sectional view of the inspection connector 100.
  • FIG. FIG. 4 is an exploded perspective view of probes 120a-120e.
  • FIG. 5 is a graph showing the relationship between the reflection loss of the inspection connector 100 and L2/L3.
  • FIG. 1 is a rear view of the inspection unit 10.
  • FIG. 2 and 3 are cross-sectional views of the inspection connector 100.
  • FIG. 4 is an exploded perspective view of probes 120a-120e.
  • the direction in which the probes 120a to 120e extend is defined as the vertical direction.
  • the direction in which the probes 120a to 120e are arranged is defined as the horizontal direction.
  • the horizontal direction is perpendicular to the vertical direction.
  • the front-rear direction is orthogonal to the up-down direction and the left-right direction.
  • the vertical direction, the horizontal direction, and the front-rear direction are directions defined for convenience of explanation. Therefore, the up-down direction, left-right direction, and front-back direction do not have to match the up-down direction, left-right direction, and front-back direction when the inspection unit 10 is in use.
  • the inspection unit 10 is used to measure high-frequency signals transmitted within electronic equipment.
  • the inspection unit 10, as shown in FIG. 1, includes an inspection connector 100, external connectors 200a to 200e, and coaxial cables 202a to 202e.
  • the external connectors 200a to 200e are connected to measuring equipment (not shown). Since the structure of the external connection connectors 200a to 200e is a general structure, the description thereof is omitted.
  • Each of the coaxial cables 202a-202e electrically connects the inspection connector 100 and the external connection connectors 200a-200e.
  • the coaxial cables 202a-202e are arranged in a row in this order from left to right.
  • Coaxial cables 202a-202e have the same structure. The structure of the coaxial cable 202a will be described as an example.
  • the coaxial cable 202a as shown in FIGS. 3 and 4, comprises a central conductor 204a, an outer conductor 206a, an insulator 208a and a coating 210a.
  • the central conductor 204a is the core wire of the coaxial cable 202a. Therefore, center conductor 204a is located in the center of coaxial cable 202a.
  • the central conductor 204a is made of a conductor with a low resistance value.
  • the center conductor 204a is made of copper, for example.
  • the outer conductor 206a surrounds the central conductor 204a. Therefore, the outer conductor 206a has an annular shape in a cross section perpendicular to the direction in which the coaxial cable 202a extends. Such an outer conductor 206a is produced, for example, by weaving thin conductor wires.
  • the outer conductor 206a is made of a conductor with a low resistance value.
  • the outer conductor 206a is made of copper, for example.
  • the insulator 208a insulates the central conductor 204a and the outer conductor 206a.
  • An insulator 208a is located between the center conductor 204a and the outer conductor 206a.
  • An insulator 208a surrounds the center conductor 204a.
  • the insulator 208a is surrounded by an outer conductor 206a.
  • the insulator 208a has an annular shape in a cross section perpendicular to the direction in which the coaxial cable 202a extends.
  • the insulator 208a is made of an insulating resin.
  • the insulator 208a is made of polyethylene, for example. Also, the insulator 208a is provided with a plurality of holes so that the coaxial cable 202a can be flexibly deformed.
  • the coating 210a surrounds the outer conductor 206a. Therefore, the coating 210a has an annular shape in a cross section perpendicular to the extending direction of the coaxial cable 202a.
  • the coating 210a is made of an insulating resin. Coating 210a is made of polyethylene, for example. However, coating 210a does not have a plurality of holes or has fewer holes than insulator 208a. Therefore, the coating 210a is less deformable than the insulator 208a. Therefore, the Young's modulus of coating 210a is greater than that of insulator 208a.
  • the central conductor 204a is exposed from the coaxial cable 202a by removing the outer conductor 206a, the insulator 208a and the coating 210a.
  • the outer conductor 206a is exposed from the coaxial cable 202a by removing the coating 210a above the portion where the central conductor 204a is exposed.
  • the inspection connector 100 is connected to the ends of the coaxial cables 202a to 202e.
  • the inspection connector 100 is connected to the lower ends of the coaxial cables 202a-202e.
  • the inspection connector 100 as shown in FIGS. 2 and 3, comprises a plunger 102, a housing 104, a flange 106, a spring 108, a spacer 109 and probes 120a-120e.
  • the probes 120a to 120e have rod shapes extending in the vertical direction. Probes 120a-120e are aligned in this order from left to right. Since the probes 120a to 120e have the same structure, the structure of the probe 120a will be described below as an example.
  • the probe 120a includes a socket 130a, a barrel 132a, a signal pin 134a and an insulating support member 136a, as shown in FIGS.
  • the barrel 132a is electrically connected to the outer conductor 206a. However, each barrel 132a is not electrically connected to center conductor 204a.
  • the barrel 132a has a cylindrical shape extending vertically. In this embodiment, the barrel 132a has a cylindrical shape with a vertically extending central axis. The upper and lower ends of barrel 132a are open.
  • the barrel 132a includes a barrel upper portion 132aU and a barrel lower portion 132aD.
  • the barrel upper portion 132aU is located above the barrel lower portion 132aD.
  • the diameter of the inner peripheral surface of the barrel upper portion 132aU is the same as the diameter of the inner peripheral surface of the barrel lower portion 132aD.
  • the diameter of the outer peripheral surface of the barrel upper portion 132aU is larger than the diameter of the outer peripheral surface of the barrel lower portion 132aD.
  • the plate thickness d1 of the barrel upper portion 132aU is larger than the plate thickness d2 of the barrel lower portion 132aD.
  • the barrel 132a having the above structure is made of brass, for example.
  • At least one of the outer conductor 206a and the covering 210a is fixed to the barrel 132a by inserting the lower end (an example of the end) of the coaxial cable 202a into the barrel 132a from the upper end of the barrel 132a.
  • the outer conductor 206a is in contact with the inner peripheral surface of the barrel 132a.
  • the outer conductor 206a is fixed to the barrel 132a by soldering.
  • the outer conductor 206a is thereby electrically connected to the barrel 132a.
  • barrel 132a is connected to ground potential.
  • the jacket 210a of the coaxial cable 202a is also fixed to the barrel 132a.
  • the socket 130a is fixed to the center conductor 204a so as to be electrically connected to the center conductor 204a.
  • the socket 130a has a cylindrical shape.
  • the upper end of socket 130a is open.
  • the lower end of the center conductor 204a is inserted into the socket 130a from the upper end of the socket 130a.
  • the socket 130a is fixed to the central conductor 204a by soldering.
  • each socket 130a is not electrically connected to the outer conductor 206a.
  • the socket 130a is located within the barrel 132a. Thereby, the socket 130a is surrounded by the barrel 132a when viewed in the vertical direction.
  • the socket 130a having the above structure is made of brass, for example.
  • the signal pin 134a is a terminal to which a high frequency signal having a relatively high frequency is applied.
  • a high-frequency signal having a relatively high frequency is, for example, a millimeter wave signal or a microwave signal having a frequency of 0.3 GHz to 0.3 THz.
  • the signal pin 134a is a bar-shaped member extending vertically.
  • Signal pin 134a is secured to socket 130a so as to be electrically connected to socket 130a.
  • the upper end of signal pin 134a is fixed to the lower end of socket 130a.
  • the signal pin 134a may be made of a material different from that of the socket 130a, and the signal pin 134a may be attached to the socket 130a so as not to move.
  • the signal pin 134a and the socket 130a may be made of one member.
  • the boundary between the signal pin 134a and the socket 130a is, for example, the lower end of the center conductor 204a.
  • the signal pin 134a extends downward from the socket 130a within the barrel 132a. At least a portion of the signal pin 134a is located within the barrel 132a. In this embodiment, the majority of signal pins 134a are located within barrel 132a. However, the lower end of the signal pin 134a protrudes downward from the barrel 132a.
  • the signal pin 134a includes a tubular portion 1202a, a lower pin 1204a and a spring 1208a.
  • the tubular portion 1202a has a tubular shape extending in the vertical direction.
  • the tubular portion 1202a has a cylindrical shape with a center axis extending in the vertical direction.
  • the upper end of cylindrical portion 1202a is not open.
  • the lower end of the tubular portion 1202a is open.
  • the diameter of the lower end of barrel 1202a is smaller than the diameter of the remainder of barrel 1202a. That is, the tubular portion 1202a has a shape in which the lower end portion of the tubular portion 1202a is slightly narrowed.
  • the lower pin 1204a is a rod-shaped member extending vertically. An upper portion of the lower pin 1204a is positioned inside the tubular portion 1202a. A lower portion of the lower pin 1204a protrudes downward from the tubular portion 1202a. However, the diameter of the upper portion of the lower pin 1204a is larger than the diameter of the lower portion of the lower pin 1204a. As a result, the lower pin 1204a cannot pass downward through the opening at the lower end of the tubular portion 1202a.
  • the spring 1208a is provided inside the cylindrical portion 1202a.
  • the lower end of spring 1208a contacts the upper end of lower pin 1204a.
  • the upper end of the spring 1208a is in contact with the upper end of the inner peripheral surface of the tubular portion 1202a. Thereby, the spring 1208a pushes the lower pin 1204a downward.
  • the signal pin 134a having the structure described above can be vertically expanded and contracted by the vertical expansion and contraction of the spring 1208a.
  • the signal pin 134a as described above is made of brass, for example.
  • the insulating support member 136a is provided below the center C in the vertical direction between the upper end of the socket 130a and the lower end of the signal pin 134a. Center C is the midpoint between the upper end of socket 130a and the lower end of signal pin 134a. Therefore, the insulating support member 136a is positioned at the barrel lower portion 132aD. The insulating support member 136a is supported by the barrel 132a and supports the signal pin 134a. More specifically, the insulating support member 136a has a cylindrical shape with a vertically extending central axis. The central axis of insulating support member 136a coincides with the central axis of barrel 132a.
  • An insulating support member 136a is positioned within barrel 132a at the lower end of barrel 132a.
  • the signal pin 134a extends vertically within the insulating support member 136a.
  • Such an insulating support member 136a is made of an insulating resin.
  • the insulating support member 136a is made of epoxy resin, for example. The barrel 132a is thereby insulated from the signal pin 134a.
  • Plunger 102 is electrically connected to barrels 132a-132e, as shown in FIG. Plunger 102 supports barrels 132a-132e. More specifically, the plunger 102 has a shape in which a cylindrical shape and a quadrangular prism shape are combined. The upper portion of the plunger 102 has a cylindrical shape with a vertically extending central axis. A lower portion of the plunger 102 has a quadrangular prism shape. Through holes Ha to He extending in the vertical direction are provided in the lower portion of the plunger 102 . The through holes Ha to He are arranged in this order from left to right. The probes 120a-120e are inserted into the through holes Ha-He.
  • each of the barrels 132a-132e comes into contact with the inner peripheral surfaces of the through holes Ha-He.
  • the plunger 102 as described above is connected to the ground potential.
  • Plunger 102 is made of highly conductive metal.
  • the plunger 102 is made of SUS, for example.
  • the housing 104 is a cylindrical member extending vertically, as shown in FIG.
  • the housing 104 is provided with a vertically extending through hole H2.
  • the through hole H2 extends through the housing 104 from the top end to the bottom end.
  • the lower end of housing 104 is inserted into the upper portion of plunger 102 .
  • the coaxial cables 202a-202e pass through the interior of the housing 104 in the vertical direction.
  • Such a housing 104 is made of highly conductive metal.
  • the housing 104 is made of SUS, for example.
  • the spacer 109 is arranged between the plunger 102 and the housing 104 in the vertical direction.
  • Spacer 109 has a disc shape. When viewed downward, the spacer 109 is provided with one slit extending in the left-right direction. Coaxial cables 202a to 202e pass through the slits in the vertical direction. Thereby, the spacer 109 positions the coaxial cables 202a to 202e in the longitudinal direction and the lateral direction.
  • Such a spacer 109 is made of highly conductive metal.
  • the spacer 109 is made of SUS, for example.
  • the flange 106 is a plate-shaped member. Flange 106 has a rectangular shape when viewed downward. The flange 106 is arranged near the upper end of the housing 104 in the vertical direction. The flange 106 is provided with a through hole H3 extending in the vertical direction. The housing 104 vertically passes through the through hole H3. However, the diameter of the upper end of housing 104 is larger than the diameter of through hole H3 of flange 106 . Therefore, the housing 104 cannot pass downward through the through hole H3.
  • Such a flange 106 is made of highly conductive metal.
  • the flange 106 is made of SUS, for example.
  • a spring 108 pushes the flange 106 upward.
  • a spring 108 pushes the plunger 102 downward. More specifically, the upper end of spring 108 is fixed to the lower surface of flange 106 . The lower end of spring 108 is fixed to the upper end of plunger 102 . Plunger 102 and housing 104 are integrated. Therefore, when the plunger 102 is pushed upward, the spring 108 is compressed and the plunger 102 and the housing 104 are displaced upward with respect to the flange 106 .
  • the sockets 130a-130e have a cylindrical shape with a center axis extending vertically. There is no insulating member in contact with the side surfaces of the sockets 130a-130e. In this embodiment, there is no insulating member between the sockets 130a-130e and the barrels 132a-132e. That is, only air exists in the space between the sockets 130a-130e and the barrels 132a-132e. Therefore, the spaces between the sockets 130a-130e and the barrels 132a-132e are hollow.
  • insulators 208a-208e may contact the upper ends of sockets 130a-130e, as shown in FIG.
  • the length in the vertical direction of section A2 from the lower end of central conductor 204a to the upper end of spring 1208a is longer than the length in the vertical direction of section A3 from the upper end to the lower end of insulating support member 136a.
  • the testing unit 10 is connected to a connector having five signal terminals.
  • a high-frequency signal having a relatively high frequency is output from the five signal terminals.
  • the connector may have five or more signal terminals.
  • the inspection connector 100 is set on the connector. Then, the inspection connector 100 is lowered. This causes each of the signal pins 134a-134e to contact five signal terminals of the connector. That is, a high frequency signal having a relatively high frequency is applied to each of the signal pins 134a-134e. At this time, each of the signal pins 134a to 134e is pushed upward by the five signal terminals. Therefore, the signal pins 134a-134e are displaced upward with respect to the plunger 102. FIG. As a result, each of the signal pins 134a-134e contacts the five signal terminals while pushing the five signal terminals downward.
  • the measuring device connected to the connector for inspection 100 can measure a high-frequency signal having a relatively high frequency while ensuring connectivity to the connector.
  • the size of the inspection connector 100 can be reduced. More specifically, signal pin 134a is secured to socket 130a. Thereby, the signal pin 134a and the socket 130a form one rod-like member.
  • the insulating support member 136a is provided below the center C in the vertical direction between the upper end of the socket 130a and the lower end of the signal pin 134a, is supported by the barrel 132a, and supports the signal pin 134a. there is Accordingly, the lower end of the rod-shaped member comprising socket 130a and signal pin 134a is fixed to barrel 132a by insulating support member 136a.
  • the outer conductor 206a is fixed to the barrel 132a by inserting the end of the coaxial cable 202a into the barrel 132a from the upper end of the barrel 132a.
  • the upper end of the rod-shaped member comprising the socket 130a and the signal pin 134a is fixed to the barrel 132a by the outer conductor 206a.
  • both ends of the rod-shaped member composed of the socket 130a and the signal pin 134a are fixed to the barrel 132a via the insulating support member 136a and the outer conductor 206a. Therefore, there is no need for an insulating member for fixing the upper end of the rod-shaped member comprising the socket 130a and the signal pin 134a to the barrel 132a.
  • the inspection connector 100 there is no insulating member that contacts the socket 130a between the socket 130a and the barrel 132a. This suppresses an increase in the dielectric constant between the socket 130a and the barrel 132a, and suppresses an increase in capacitance between the socket 130a and the barrel 132a. Therefore, even if the barrel 132a is made thinner for miniaturization of the connector for inspection 100, an increase in deviation of the characteristic impedance generated in the signal pin 134a from the predetermined characteristic impedance is suppressed. As described above, according to the inspection connector 100, the size of the inspection connector 100 can be reduced.
  • the barrel 132a is reinforced by the insulating support member 136a. More specifically, the plate thickness d1 of the barrel upper portion 132aU is greater than the plate thickness d2 of the barrel lower portion 132aD. Therefore, the strength of the lower barrel portion 132aD is lower than the strength of the upper barrel portion 132aU. Thus, the insulating support member 136a is positioned at the lower barrel portion 132aD. As a result, deformation of the barrel lower portion 132aD is suppressed by the insulating support member 136a. As a result, according to the test connector 100, the barrel 132a is reinforced by the insulating support member 136a.
  • the inspection connector 100 even if the barrels 132a to 132e in the section A2 are narrowed, the increase in the deviation of the characteristic impedance from the predetermined characteristic impedance generated in the signal pins 134a to 134e in the section A2 is suppressed. . More specifically, there are no insulating members in contact with the signal pins 134a-134e or sockets 130a-130e in section A2. That is, the signal pins 134a-134e and sockets 130a-130e are surrounded by air in section A2. This suppresses an increase in dielectric constant between the socket 130a and the barrel 132a in the section A2, and suppresses an increase in capacitance between the socket 130a and the barrel 132a in the section A2. Therefore, even if the barrel 132a in the section A2 is narrowed, an increase in deviation of the characteristic impedance from the predetermined characteristic impedance generated at the signal pin 134a in the section A2 is suppressed.
  • FIG. 5 is a graph showing the relationship between the reflection loss of the inspection connector 100 and L2/L3.
  • L2 is the length of section A2 in the vertical direction.
  • L3 is the length of section A3 in the vertical direction. The experiment of FIG. 5 investigated the return loss of a high frequency signal having a frequency of 20 GHz.
  • L2/L3 is 1 or more, the reflection loss of the inspection connector 100 is reduced, and the communication efficiency of the inspection connector 100 is improved.
  • the inspection connector according to the present invention is not limited to the inspection connector 100 according to the above embodiment, and can be modified within the scope of the gist thereof.
  • the number of probes in the inspection connector 100 is not limited to five.
  • the number of probes may be 1 or more and 4 or less, or may be 6 or more.
  • the signal pins 134a to 134e do not have to have a vertically expandable structure.
  • the plunger 102, the housing 104, the flange 106, the spring 108 and the spacer 109 are not essential components in the inspection connector 100.
  • the plate thickness d1 of the barrel upper portion 132aU and the plate thickness d2 of the barrel lower portion 132aD may be equal. Also, the plate thickness d1 of the barrel upper portion 132aU may be smaller than the plate thickness d2 of the barrel lower portion 132aD.
  • the cross-sectional shape of the barrels 132a to 132e is not limited to a circle.
  • the cross-sectional shape of barrels 132a-132e may be polygonal.
  • the coating 210a does not have to be fixed to the barrel 132a. In this case, coating 210a is not located within barrel 132a.
  • the outer conductor 206a and the covering 210a should be fixed to the barrel 132a. Therefore, the outer conductor 206a may be fixed to the barrel 132a and the coating 210a may not be fixed to the barrel 132a. The outer conductor 206a may not be fixed to the barrel 132a and the coating 210a may be fixed to the barrel 132a.
  • Inspection unit 100 Inspection connector 102: Plunger 104: Housing 106: Flange 108: Spring 109: Spacers 120a-120e: Probes 130a-130e: Socket 132aD: Barrel lower part 132aU: Barrel upper part 132a-132e: Barrel 134a- 134e: signal pins 136a to 136e: insulating support members 200a to 200e: external connection connectors 202a to 202e: coaxial cables 204a to 204e: center conductors 206a to 206e: outer conductors 208a to 208e: insulators 210a to 210e: coating 1202a ⁇ 1202e: cylindrical portion 1204a ⁇ 1204e: lower pin 1208a ⁇ 1208e: spring

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  • Measuring Leads Or Probes (AREA)

Abstract

Dans ce connecteur pour inspection, un cylindre est électriquement connecté à un conducteur externe et a une forme cylindrique s'étendant verticalement. Une douille est fixée à un conducteur central de manière à être électriquement connectée au conducteur central et est positionnée à l'intérieur du cylindre. Une broche de signal est fixée à la douille de manière à être électriquement connectée à la douille et s'étend vers le bas à partir de la douille. Au moins une partie de la broche de signal est positionnée à l'intérieur du cylindre. Un élément de support isolant est disposé davantage vers le bas que le centre vertical entre l'extrémité supérieure de la douille et l'extrémité inférieure de la broche de signal, est supporté par le cylindre, et supporte la broche de signal. L'insertion d'une partie d'extrémité d'un câble coaxial dans le cylindre à partir de l'extrémité supérieure du cylindre entraîne au moins l'un parmi le conducteur externe et une gaine fixée au cylindre. Entre la douille et le cylindre, il n'y a pas d'élément isolant en contact avec la douille.
PCT/JP2022/003195 2021-03-26 2022-01-28 Connecteur pour inspection WO2022201846A1 (fr)

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JP2021053323 2021-03-26
JP2021-053323 2021-03-26

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003123910A (ja) * 2001-10-12 2003-04-25 Murata Mfg Co Ltd コンタクトプローブ及びこれを用いた通信装置の測定装置
JP2009052913A (ja) * 2007-08-23 2009-03-12 Yamaichi Electronics Co Ltd 同軸型コンタクト及び同軸多芯コネクタ
EP2144338A1 (fr) * 2008-07-11 2010-01-13 Tyco Electronics Nederland B.V. Zone coaxiale
WO2020175347A1 (fr) * 2019-02-27 2020-09-03 株式会社村田製作所 Élément de sonde et unité de sonde

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003123910A (ja) * 2001-10-12 2003-04-25 Murata Mfg Co Ltd コンタクトプローブ及びこれを用いた通信装置の測定装置
JP2009052913A (ja) * 2007-08-23 2009-03-12 Yamaichi Electronics Co Ltd 同軸型コンタクト及び同軸多芯コネクタ
EP2144338A1 (fr) * 2008-07-11 2010-01-13 Tyco Electronics Nederland B.V. Zone coaxiale
WO2020175347A1 (fr) * 2019-02-27 2020-09-03 株式会社村田製作所 Élément de sonde et unité de sonde

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