WO2021065702A1 - プローブ - Google Patents

プローブ Download PDF

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Publication number
WO2021065702A1
WO2021065702A1 PCT/JP2020/036221 JP2020036221W WO2021065702A1 WO 2021065702 A1 WO2021065702 A1 WO 2021065702A1 JP 2020036221 W JP2020036221 W JP 2020036221W WO 2021065702 A1 WO2021065702 A1 WO 2021065702A1
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WO
WIPO (PCT)
Prior art keywords
elastic body
plunger
probe
flange
housing
Prior art date
Application number
PCT/JP2020/036221
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
光代 村中
聖人 荒木
真一 剱崎
幸裕 北市
Original Assignee
株式会社村田製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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
Priority to JP2021551177A priority Critical patent/JP7136362B2/ja
Priority to CN202080057124.7A priority patent/CN114223098B/zh
Publication of WO2021065702A1 publication Critical patent/WO2021065702A1/ja

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Classifications

    • 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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • 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
    • 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
    • G01R1/06711—Probe needles; Cantilever beams; "Bump" contacts; Replaceable probe pins
    • G01R1/06716—Elastic
    • G01R1/06722—Spring-loaded
    • 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
    • G01R1/06711—Probe needles; Cantilever beams; "Bump" contacts; Replaceable probe pins
    • G01R1/06733—Geometry aspects
    • 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
    • G01R1/073—Multiple probes
    • 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
    • G01R1/073—Multiple probes
    • G01R1/07307—Multiple probes with individual probe elements, e.g. needles, cantilever beams or bump contacts, fixed in relation to each other, e.g. bed of nails fixture or probe card
    • G01R1/07314—Multiple probes with individual probe elements, e.g. needles, cantilever beams or bump contacts, fixed in relation to each other, e.g. bed of nails fixture or probe card the body of the probe being perpendicular to test object, e.g. bed of nails or probe with bump contacts on a rigid support
    • 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
    • H01R13/02—Contact members
    • 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
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors

Definitions

  • the present invention relates to a probe for inspecting the characteristics of a connector.
  • Patent Document 1 a probe for inspecting the characteristics of a connector to be inspected has been disclosed (see, for example, Patent Document 1).
  • the probe of Patent Document 1 is a probe for inspecting the characteristics of a connector, and in particular, inspects the characteristics of a multi-pole connector provided with a plurality of terminals so as to pass a plurality of signals.
  • the probe of Patent Document 1 includes a plurality of probe pins capable of simultaneously contacting a plurality of terminals of a multi-pole connector.
  • An object of the present invention is to provide a probe capable of more accurately inspecting the characteristics of connector terminals.
  • the probe of one aspect of the present invention is a probe for inspecting the characteristics of a connector, and includes a flange having a through hole and a base end portion which is an end portion on one side.
  • a housing that has a tip portion that is an end portion on the other side, is inserted into the through hole of the flange, the base end portion can be fitted into the through hole, and includes a coaxial cable and extends in the axial direction.
  • a plunger attached to the tip of the housing and having an opening for passing a probe pin electrically connected to the coaxial cable at the bottom, and a flange and the flange arranged between the flange and the flange.
  • An elastic body capable of urging the plunger in the axial direction away from each other and an elastic body arranged around the housing between the flange and the plunger so as to receive the axial urging force by the elastic body. It is equipped with a thrust bearing.
  • the probe of another aspect of the present invention is a probe for inspecting the characteristics of a connector, and includes a flange having a through hole, a base end portion which is one end portion, and an end portion on the other side.
  • a housing that has a tip portion that is, is inserted into the through hole of the flange, the base end portion can be fitted into the through hole, and includes a coaxial cable and extends in the axial direction, and a housing of the housing.
  • a plunger attached to the tip portion and having an opening through which a probe pin electrically connected to the coaxial cable is formed at the bottom is arranged between the flange and the plunger, and the flange and the plunger are separated from each other.
  • An elastic body capable of urging in the axial direction in the direction, and a ring-shaped member arranged around the housing between the flange and the plunger and interposed so as to receive the axial urging force by the elastic body.
  • the ring-shaped member has a first surface that directly contacts the elastic body and receives the urging force by the elastic body, and the friction coefficient between the first surface and the elastic body is the plunger. Is smaller than the friction coefficient between the and the elastic body.
  • the characteristic inspection of the terminal of the connector can be performed more accurately.
  • a probe for inspecting the characteristics of a connector which is a flange on which a through hole is formed, a base end portion which is an end portion on one side, and an end portion on the other side.
  • a housing having a tip portion, which is inserted into the through hole of the flange, the base end portion of which can be fitted into the through hole, and which includes a coaxial cable and extends in the axial direction, and the tip of the housing.
  • It includes an elastic body that can be urged in the axial direction and a thrust bearing that is arranged around the housing between the flange and the plunger and is interposed so as to receive the urging force in the axial direction by the elastic body. , Provide a probe.
  • the thrust bearing provides the probe according to the first aspect, which is arranged between the elastic body and the plunger. According to such a configuration, by arranging the thrust bearing at a position closer to the plunger than the elastic body, it is possible to make it difficult for the rotational force of the elastic body to be transmitted by the plunger.
  • the thrust bearing has a first surface that directly contacts the elastic body and surrounds the through hole, and the friction coefficient between the first surface and the elastic body is the same.
  • the probe according to the second aspect is provided, which is smaller than the coefficient of friction between the elastic body and the plunger.
  • the spring can be made slippery with respect to the first surface of the ring-shaped member, and the force in the plane direction due to the compression of the spring, particularly the rotational force, can be absorbed by the ring-shaped member. ..
  • the thrust bearing has a second surface along the outer periphery of the first surface, and the friction coefficient between the second surface and the elastic body is the same as that of the first surface.
  • the probe according to the third aspect which has a coefficient of friction with the elastic body, is provided. According to such a configuration, the stopper function for restricting the movement of the spring can be realized by the second surface provided on the outside of the first surface.
  • the thrust bearing has a protrusion protruding from the first surface around a portion of the first surface that comes into direct contact with the elastic body, the third aspect or the third aspect.
  • the probe according to the four aspects is provided. According to such a configuration, the protrusion can realize a stopper function for restricting the movement of the spring.
  • the thrust bearing provides the probe according to any one of the second to fifth aspects, which is in direct contact with the plunger. According to such a configuration, the number of parts can be reduced by not providing a member between the thrust bearing and the plunger.
  • the thrust bearing provides the probe according to the first or second aspect, which is in direct contact with the elastic body. According to such a configuration, the number of parts can be reduced by not providing a member between the thrust bearing and the elastic body.
  • the elastic body provides the probe according to any one of the first to seventh aspects, which is a spring arranged around the housing. According to such a configuration, a general-purpose configuration can be used for the elastic body, and the manufacturing cost of the probe can be reduced.
  • the probe according to the eighth aspect wherein the outer diameter of the spring is set larger than the diameter of the central hole of the thrust bearing.
  • the thrust bearing includes a ring-shaped first thrust washer, a ring-shaped second thrust washer arranged on the tip end side of the housing with respect to the first thrust washer, and the above.
  • the probe according to the tenth aspect wherein the surface of the first thrust washer and the second thrust washer on the side facing the cage is flat.
  • the ball of the cage can move freely in the plane direction as compared with the case where the raceway groove of the ball held by the cage is provided.
  • the thrust bearing can absorb the displacement of the probe pin.
  • a plurality of the coaxial cable and the probe pin are provided, respectively, and any one of the first to eleventh aspects for performing a characteristic inspection of a multi-pole connector having a plurality of terminals.
  • One of the probes described is provided. According to such a configuration, when performing a characteristic inspection of a multi-pole connector, poor contact with the terminal is likely to occur due to misalignment of the probe pin, whereas misalignment of the probe pin due to twisting of the elastic body is caused. By suppressing it, the accuracy of the characteristic inspection of the multi-pole connector can be improved.
  • a probe for inspecting the characteristics of a connector that is, a flange on which a through hole is formed, a base end portion which is an end portion on one side, and an end portion on the other side.
  • a housing having a tip portion, which is inserted into the through hole of the flange, the base end portion of which can be fitted into the through hole, and which includes a coaxial cable and extends in the axial direction, and the tip of the housing.
  • An elastic body capable of urging in the axial direction and a ring-shaped member arranged around the housing between the flange and the plunger and interposed so as to receive the urging force in the axial direction by the elastic body.
  • the ring-shaped member has a first surface that comes into direct contact with the elastic body and receives the urging force by the elastic body, and the friction coefficient between the first surface and the elastic body is the flanger and the said.
  • a probe having a coefficient of friction with an elastic body.
  • the ring-shaped member has a second surface along the outer circumference of the first surface, and the friction coefficient between the second surface and the elastic body is the first surface.
  • the probe according to the thirteenth aspect which is larger than the coefficient of friction between the elastic body and the elastic body. According to such a configuration, the stopper function for restricting the movement of the spring can be realized by the second surface provided on the outside of the first surface.
  • the ring-shaped member has a protruding portion protruding from the first surface around a portion of the first surface that comes into direct contact with the elastic body, or the thirteenth aspect.
  • the probe according to the fourteenth aspect is provided. According to such a configuration, the protrusion can realize a stopper function for restricting the movement of the spring.
  • FIGS. 1 and 5 are diagrams showing a schematic configuration of the probe 2 according to the embodiment.
  • 1 and 2 are perspective views of the probe 2 as viewed from different angles.
  • FIG. 3 is a vertical cross-sectional view of the probe 2 shown in FIGS. 1 and 2.
  • 4 and 5 are exploded perspective views of the probe 2 as viewed from different angles.
  • the probe 2 is an inspection instrument that inspects the characteristics of the connector 3.
  • the connector 3 of the embodiment is a multi-pole connector having a plurality of terminals. 1 to 3 show the outer shape of the connector 3 in a simplified manner, and FIGS. 4 and 5 omit the illustration of the connector 3.
  • the probe 2 includes a flange 4, a housing 6, a coaxial cable 8, a plunger 10, a spring 12 (elastic body), and a thrust bearing 14.
  • the flange 4 is a member for attaching the probe 2 to a predetermined facility.
  • the predetermined equipment is, for example, a sorting machine for sorting a printed circuit board on which the connector 3 is mounted based on the result of a characteristic inspection of the connector 3.
  • a through hole 20 for inserting the housing 6 is provided in the central portion of the flange 4.
  • the flange 4 is arranged so as to extend in the horizontal direction, and the through hole 20 is provided so as to extend in the vertical direction.
  • the through hole 20 of the embodiment has a cylindrical shape.
  • a recess 13 for receiving the base end portion 21 of the housing 6 is formed on the upper surface 11 of the flange 4.
  • the recess 13 is provided on the upper surface 11 of the flange 4 as a portion in which the through hole 20 is expanded in the horizontal direction.
  • the through hole 20 and the recess 13 are spatially continuously formed.
  • the housing 6 is a member that is inserted into and fitted into the through hole 20 of the flange 4 and holds a plunger 10 and the like, which will be described later.
  • the housing 6 is formed in a tubular shape extending in the axial direction A while including the coaxial cable 8.
  • the axial direction A may substantially coincide with the vertical direction.
  • the housing 6 includes a base end portion 21, a tip end portion 22, and an intermediate portion 23.
  • the base end portion 21 is the end portion on one side (upper side in the embodiment) of the housing 6, and the tip end portion 22 is the end portion on the other side (lower side in the embodiment) of the housing 6. Both the base end portion 21 and the tip end portion 22 have a shape with an enlarged diameter with respect to the intermediate portion 23.
  • the base end portion 21 is a portion housed in the recess 13 of the flange 4.
  • the recess 13 is provided with an inclined surface that is inclined so as to guide the base end portion 21 inward. While housed in the recess 13, the proximal end 21 is slightly movable in the recess 13 in the lateral direction, that is, in the horizontal direction.
  • the tip portion 22 is a portion that is press-fitted into the plunger 10.
  • the plunger 10 is fixed to the housing 6 by press-fitting the tip portion 22 into the plunger 10.
  • the intermediate portion 23 is a portion extending between the base end portion 21 and the tip end portion 22, and a spring 12 is arranged around the intermediate portion 23.
  • the plunger 10 is a member for fitting and positioning the connector 3.
  • the plunger 10 includes a fitting portion 10A into which the connector 3 is fitted from below, and a mounting portion 10B to be attached to the housing 6.
  • the fitting portion 10A is attached to the mounting portion 10B so as to project downward from the end portion of the mounting portion 10B.
  • the fitting portion 10A is formed with a protrusion 24 (FIG. 7) for fitting the connector 3.
  • the coaxial cable 8 is a member for electrically conducting with the terminal of the connector 3.
  • FIG. 6 is a perspective view showing one coaxial cable 8.
  • the coaxial cable 8 is formed in a rod shape, and a probe pin 16 is electrically connected to the tip of the coaxial cable 8.
  • One probe pin 16 is connected to one coaxial cable 8.
  • the other end of the coaxial cable 8 is connected to a measurement connector (not shown).
  • the measurement connector is a connector for connecting the coaxial cable 8 to an external measuring instrument (not shown).
  • the probe pin 16 is a rod-shaped member that contacts and conducts each terminal of the connector 3.
  • the probe pin 16 is formed of a conductive material on the inside and an insulating member on the outside.
  • the probe pin 16 is inserted through the fitting portion 10A of the plunger 10.
  • the tip of the probe pin 16 is a conductive portion and is exposed from the bottom of the fitting portion 10A.
  • FIG. 7 is a perspective view of the plunger 10.
  • the fitting portion 10A of the plunger 10 has an opening at the bottom thereof that exposes the tip of the probe pin 16.
  • the tip of the probe pin 16 exposed from the opening of the fitting portion 10A projects so as to come into contact with the terminal of the connector 3 fitted in the fitting portion 10A.
  • a plurality of coaxial cables 8 and a plurality of probe pins 16 are provided. According to such a configuration, even if the connector 3 to be inspected is a multi-pole connector having a plurality of terminals, the characteristic inspection of each terminal of the connector 3 can be performed at the same time.
  • eight coaxial cables 8 and eight probe pins 16 are provided, and the characteristics of the multi-pole connector 3 having eight terminals can be inspected at the same time.
  • the fitting portion 10A has a pair of protrusions 24.
  • the pair of protrusions 24 are protrusions that protrude downward from the bottom of the fitting portion 10A, and are arranged at intervals from each other.
  • a guide groove 28 for guiding the terminal of the connector 3 toward the probe pin 16 is formed between the pair of protrusions 24.
  • the surface shape of the guide groove 28 is designed to correspond to the connector 3.
  • the mounting portion 10B of the plunger 10 has a substantially disk-shaped portion that receives the thrust bearing 14 described above and a portion that is connected to the fitting portion 10A.
  • the spring 12 is an elastic body for pressing the probe pin 16 described above against the terminal of the connector 3 with an appropriate load.
  • the spring 12 is arranged around the housing 6 between the flange 4 and the plunger 10. As shown in FIGS. 1 and 3, one end (upper side) of the spring 12 is press-fitted into a groove formed on the lower surface of the flange 4. On the other hand, the other end (lower side) of the spring 12 is in contact with the surface of the thrust bearing 14 as shown in FIGS. 2 and 3. The spring 12 and the thrust bearing 14 are not fixed to each other.
  • the spring 12 In the state before fitting the connector 3 to the fitting portion 10A as shown in FIGS. 1 and 2, the spring 12 is in a state shorter than the natural length, that is, in a compressed state.
  • the compressed spring 12 urges the upper flange 4 and the lower thrust bearing 14 and the plunger 10 in the axial direction A so as to separate from each other.
  • the spring 12 in the compressed state has an urging force F in the axial direction A as an elastic force that tends to extend toward the natural length.
  • the spring 12 in the embodiment is a spiral coil spring, and its length and elastic force can be easily adjusted.
  • the spring 12 has an elastic modulus k1 and a shrinkage amount x1, and the urging force F can be roughly estimated as a value obtained by multiplying the elastic modulus k1 and the shrinkage amount x1.
  • the elastic modulus may be referred to as “elastic modulus” or “elastic constant”, or may be substituted by "spring constant”.
  • the outer diameter D1 of the spring 12 is set to be larger than the diameter D2 of the center hole of the thrust bearing 14. By setting such a length, it is possible to prevent the spring 12 which is not fixed to the thrust bearing 14 from accidentally entering the center hole of the thrust bearing 14.
  • the thrust bearing 14 is a member that intervenes so as to receive the urging force F in the axial direction A by the spring 12 described above. Like the spring 12, the thrust bearing 14 is arranged around the housing 6 between the flange 4 and the plunger 10. The thrust bearing 14 is not fixed to either the spring 12 or the plunger 10, and is arranged around the housing 6 so as to be rotatable in the rotation direction R about the axial direction A.
  • the spring 12 is arranged on the upper side and the thrust bearing 14 is arranged on the lower side.
  • the spring 12 is arranged between the flange 4 and the thrust bearing 14, and the thrust bearing 14 is arranged between the spring 12 and the plunger 10.
  • the spring 12 comes into direct contact with the flange 4 and the thrust bearing 14, and the thrust bearing 14 comes into direct contact with the spring 12 and the plunger 10. According to such a configuration, the number of parts can be reduced as compared with the case where other members are interposed between these members.
  • FIGS. 8A and 8B are exploded perspective views of the thrust bearing 14 viewed from different angles, respectively.
  • the thrust bearing 14 has a first thrust washer 30, a second thrust washer 32, and a cage 34.
  • the first thrust washer 30, the second thrust washer 32, and the cage 34 are ring-shaped members forming the central holes 30A, 32A, and 34A, respectively.
  • the diameters of the central holes 30A, 32A, and 34A are all set to be substantially the same.
  • the first thrust washer 30 and the second thrust washer 32 are cylindrical members having the same dimensions.
  • the first thrust washer 30 is arranged above the cage 34, and the second thrust washer 32 is arranged below the cage 34.
  • the first thrust washer 30 has an upper surface 30B and a lower surface 30C, and the second thrust washer 32 has an upper surface 32B and a lower surface 32C.
  • the first thrust washer 30 faces the cage 34 on the lower surface 30C, and the second thrust washer 32 faces the cage 34 on the upper surface 32B.
  • the cage 34 is a ring-shaped member arranged between the first thrust washer 30 and the second thrust washer 32.
  • the cage 34 of the embodiment holds a plurality of balls 36.
  • the plurality of balls 36 are provided so as to be movable relative to the thrust washers 30 and 32 in the rotational direction R while being sandwiched between the lower surface 30C of the first thrust washer 30 and the upper surface 32B of the second thrust washer 32. ing.
  • the upper surface 30B and the lower surface 30C of the first thrust washer 30 and the upper surface 32B and the lower surface 32C of the second thrust washer 32 are all formed flat.
  • the ball 36 of the cage 34 moves in the horizontal direction. It will be possible.
  • a circumferential recess is formed as a ball trajectory on the surface of the thrust washer on the side in contact with the ball to restrict the movement of the ball, but the lower surface 30C and the upper surface 32B are flat.
  • the ball 36 of the cage 34 By forming the ball 36 in the cage 34, the movement of the ball 36 of the cage 34 is not restricted. Therefore, the ball 36 of the cage 34 can not only rotate in the rotation direction R relative to the thrust washers 30 and 32, but also can move laterally in the horizontal direction.
  • the probe 2 further includes a plate 26.
  • the plate 26 is a member for preventing the coaxial cable 8 from coming off upward.
  • the plate 26 is arranged at the mounting portion 10B of the plunger 10 and is arranged between the tip portion 22 of the housing 6 and the plunger 10.
  • the housing 6 and the plunger 10 can be integrally rotated in the rotation direction R which is the circumferential direction.
  • the spring 12 and the thrust bearing 14, which are not attached to either the housing 6 or the plunger 10, do not rotate integrally.
  • FIGS. 9A and 9B are notched perspective views showing the housing 6 before the connector 3 is fitted
  • FIG. 9B is a notched perspective view showing the housing 6 after the connector 3 is fitted.
  • the connector 3, the plunger 10, the spring 12, the thrust bearing 14, and the like are not shown, and only the flange 4 and the housing 6 are shown.
  • the base end portion 21 of the housing 6 is housed in the recess 13, and the spring 12 (not shown) in the compressed state has an urging force F1.
  • the connector 3 is fitted into the fitting portion 10A (not shown) of the plunger 10, and an upward pressing force is applied from the connector 3 to the housing 6 via the plunger 10.
  • FIG. 9B the housing 6 floats upward with respect to the flange 4, and the engagement between the base end portion 21 of the housing 6 and the flange 4 is released.
  • the housing 6 can move in the horizontal direction within the range in the through hole 20 and can rotate in the rotation direction R (not shown).
  • the housing 6 moves laterally in the horizontal direction and rotates in the rotation direction R according to the position of the terminal of the connector 3 fitted to the plunger 10.
  • the postures of the housing 6 and the plunger 10 are adjusted according to the positions of the terminals of the connector 3, and the probe pins 16 attached to the plunger 10 and the terminals of the connector 3 can be aligned.
  • the spring 12 shown in FIG. 9B is further contracted from the state shown in FIG. 9A and has an urging force F2 larger than the urging force F1. Since the spring 12 has the urging force F2, the probe pin 16 arranged on the plunger 10 can be pressed against the connector 3 with an appropriate load.
  • the spring 12 is not fixed to either the housing 6 or the plunger 10, but is arranged around the housing 6 in a state of being fixed to the lower surface of the flange 4.
  • the thrust bearing 14 is interposed between the spring 12 and the plunger 10. The thrust bearing 14 has a function of receiving an urging force F in the axial direction A of the spring 12 and absorbing a rotational force W due to the twist of the spring 12.
  • the probe 2 of the embodiment includes a flange 4, a housing 6, a plunger 10, a spring 12, and a thrust bearing 14.
  • the flange 4 is a member in which a through hole 20 is formed.
  • the housing 6 has a base end portion 21 which is an end portion on one side and a tip end portion 22 which is an end portion on the other side, and is inserted into a through hole 20 of a flange 4, and the base end portion 21 is inserted into the through hole 20. It can be fitted and includes the coaxial cable 8 and extends in the axial direction A.
  • the plunger 10 is attached to the tip end 22 of the housing 6 and has an opening at the bottom through which the probe pin 16 electrically connected to the coaxial cable 8 passes.
  • the spring 12 is an elastic body arranged between the flange 4 and the plunger 10 and capable of urging the flange 4 and the plunger 10 in the axial direction A in a direction away from each other.
  • the thrust bearing 14 is arranged around the housing 6 between the flange 4 and the plunger 10 and is interposed so as to receive the urging force F in the axial direction A by the spring 12.
  • the thrust bearing 14 can absorb the rotational force W due to the twist of the spring 12 while receiving the urging force F in the axial direction A by the spring 12.
  • the rotational force W of the spring 12 being transmitted to the plunger 10
  • the probe pin 16 can be used as the terminal of the connector. It is possible to make contact with high accuracy. In this way, the accuracy of the characteristic inspection of the connector can be improved.
  • the thrust bearing 14 is arranged between the spring 12 and the plunger 10. According to such a configuration, by arranging the thrust bearing 14 at a position closer to the plunger 10 than the spring 12, the rotational force of the spring 12 can be made difficult to be transmitted by the plunger 10.
  • the thrust bearing 14 comes into direct contact with the plunger 10. According to such a configuration, the number of parts can be reduced by not providing a member between the thrust bearing 14 and the plunger 10.
  • the thrust bearing 14 comes into direct contact with the spring 12. According to such a configuration, the number of parts can be reduced by not providing a member between the thrust bearing 14 and the spring 12.
  • a spring 12 arranged around the housing 6 is used as an elastic body that generates an urging force F.
  • a general-purpose configuration can be used for the elastic body, and the manufacturing cost of the probe 2 can be reduced.
  • the outer diameter D1 of the spring 12 is set to be larger than the diameter D2 of the center hole of the thrust bearing 14. According to such a configuration, it is possible to prevent the spring 12 from accidentally entering the center hole of the thrust bearing 14.
  • the thrust bearing 14 has a ring-shaped first thrust washer 30, a ring-shaped second thrust washer 32, and a ring-shaped cage 34.
  • the second thrust washer 32 is arranged closer to the tip portion 22 of the housing 6 than the first thrust washer 30.
  • the cage 34 is arranged between the first thrust washer 30 and the second thrust washer 32, and holds a plurality of balls 36. According to such a configuration, a general-purpose configuration can be used as the thrust bearing 14, and the manufacturing cost of the probe 2 can be reduced.
  • the lower surface 30C and the upper surface 32B of the first thrust washer 30 and the second thrust washer 32 facing the cage 34 are flat. According to such a configuration, the ball 36 of the cage 34 can be freely moved in the plane direction as compared with the case where the raceway groove of the ball 36 of the cage 34 is provided on the inner surface of the thrust washers 30 and 32. .. As a result, not only the rotational force W due to the twist of the spring 12 but also the displacement in the plane direction can be absorbed by the thrust bearing 14. Therefore, the misalignment of the probe pin 16 can be further suppressed, and the accuracy of the characteristic inspection of the connector 3 can be further improved.
  • a plurality of coaxial cables 8 and probe pins 16 are provided, respectively, and the characteristics of the multi-pole connector 3 having a plurality of terminals are inspected.
  • the multi-pole connector 3 since the multi-pole connector 3 has a plurality of terminals, poor contact with the terminals is likely to occur due to the misalignment of the probe pins 16, whereas the position of the probe pins 16 due to the twist of the spring 12 is likely to occur. By suppressing the deviation, the accuracy of the characteristic inspection of the multi-pole connector 3 can be improved.
  • the present invention has been described above with reference to the above-described embodiments, the present invention is not limited to the above-described embodiments.
  • the case where the spring 12 is arranged on the upper side and the thrust bearing 14 is arranged on the lower side has been described, but the case is not limited to such a case.
  • the spring 12 may be arranged on the lower side
  • the thrust bearing 14 may be arranged on the upper side
  • the like may be arranged at any position between the flange 4 and the plunger 10.
  • the case where one thrust bearing 14 is provided has been described, but the case is not limited to such a case.
  • two thrust bearings 14 may be provided.
  • a thrust bearing different from the thrust bearing 14 may be interposed between the flange 4 and the spring 12.
  • the case where the spring 12 is used as the elastic body for generating the urging force F in the axial direction A has been described, but the case is not limited to such a case. Any elastic body may be used as long as it generates an urging force F in the axial direction A.
  • the case where the multi-pole connector 3 having a plurality of terminals, particularly the multi-pole connector 3 having eight terminals, is the inspection target of the probe 2 has been described, but the case is not limited to such a case. .. A connector having an arbitrary number of terminals may be inspected.
  • the thrust bearing 14 has a plurality of balls 36 as shown in FIGS. 8A and 8B has been described, but the case is not limited to such a case.
  • Any type of thrust bearing may be used as long as it is a "rotational force absorbing member" that absorbs the rotational force W due to the twist of the spring 12 while receiving the urging force F in the axial direction A of the spring 12.
  • different examples of the thrust bearing 14 of the above-described embodiment will be described with reference to FIGS. 10 and 11.
  • FIG. 10 is a schematic perspective view showing the thrust bearing of the first embodiment.
  • the thrust bearing of the first embodiment is a ring-shaped member 100 having a through hole 102 in the central portion.
  • a housing 6 (not shown) is arranged in the through hole 102.
  • the ring-shaped member 100 has a main surface 104 as a surface facing the spring 12 (not shown).
  • the main surface 104 has a first surface 106 and a second surface 108.
  • the first surface 106 is a surface surrounding the through hole 102 and comes into direct contact with the spring 12.
  • the second surface 108 is a surface along the outer circumference 110 of the first surface 106, and is provided outside the first surface 106.
  • the ring-shaped member 100 is integrally made of a resin such as POM.
  • the material of the spring 12 and the plunger 10 that come into contact with the ring-shaped member 100 is, for example, SUS.
  • the coefficient of friction between the SUSs is, for example, 0.6 to 0.9.
  • the coefficient of friction between SUS and POM is, for example, about 0.15, which is lower than the coefficient of friction between SUSs.
  • the coefficient of friction between the first surface 106 made of POM and the spring 12 made of SUS is the coefficient of friction between the spring 12 made of SUS and the plunger 10 made of SUS (for example, 0.15). It is smaller than 0.6 to 0.9).
  • the spring 12 is connected to the ring-shaped member 100 by interposing the ring-shaped member 100, as compared with the configuration in which the spring 12 and the plunger 10 are in direct contact with each other without providing the ring-shaped member 100. It can be made slippery on the main surface 104.
  • the force in the plane direction due to the compression of the spring 12, particularly the rotational force W, can be absorbed by the ring-shaped member 100, and the rotational force W can be suppressed from being transmitted to the plunger 10.
  • the same effect as that of the thrust bearing 14 (for example, made of metal) of the embodiment can be obtained.
  • the friction coefficient between the second surface 108 and the spring 12 is made larger than the friction coefficient between the first surface 106 and the spring 12.
  • the first surface 106 and the second surface 108 may be integrally formed of the same material, and then the surface of the second surface 108 may be roughened.
  • the ring-shaped member 100 made of resin such as POM, the shape such as thickness can be easily changed by resin molding without performing shaving or the like as in the case of metal. As a result, the urging force of the spring 12 can be easily adjusted.
  • the friction coefficient between the spring 12 and the third surface which is the surface of the ring-shaped member 100 facing the first surface 106 and the second surface 108, is preferably smaller than the friction coefficient between the spring 12 and the plunger 10. In this case, the transmission of the rotational force to the plunger 10 can be further suppressed.
  • FIG. 11 is a schematic perspective view showing the thrust bearing of the second embodiment.
  • the thrust bearing of the second embodiment is a ring-shaped member 200 having a through hole 202 in the central portion.
  • a housing 6 (not shown) is arranged in the through hole 202.
  • the ring-shaped member 200 has a first surface 204 as a main surface on the side facing the spring 12 (not shown).
  • the first surface 204 is made of a resin such as POM, and the friction coefficient between the first surface 204 and the spring 12 (for example, 0.15) is set to the friction coefficient between the spring 12 and the plunger 10 (for example). It is smaller than 0.6 to 0.9). As a result, the same effect as that of the first embodiment can be obtained.
  • a projecting portion 206 projecting in a direction orthogonal to the first surface 204 is provided around the first surface 204.
  • a protruding portion 206 By providing such a protruding portion 206, it is possible to provide a stopper function for restricting the movement of the spring 12 when the spring 12 slides in the plane direction, as in the first embodiment.
  • the surface of the first surface 204 may be processed in the same manner as in the first embodiment.
  • the ring-shaped members 100 and 200 are a perfect annular shape continuous in the circumferential direction, but not limited to such a case, the ring-shaped members 100 and 200 are incomplete with a partially discontinuous portion. It may be an annular shape. That is, the ring-shaped members 100 and 200 may at least partially surround the housing 6.
  • the case where the spring 12 is arranged on the upper side and the ring-shaped members 100 and 200 are arranged on the lower side has been described, but the case is not limited to such a case.
  • the spring 12 may be arranged on the lower side, the ring-shaped members 100 and 200 may be arranged on the upper side, and the spring 12 may be arranged at any position between the flange 4 and the plunger 10.
  • the friction coefficient between the ring-shaped members 100 and 200 and the flange 4 is smaller than the friction coefficient between the spring 12 and the flange 4. Is preferable.
  • the present invention is applicable to any probe that inspects the characteristics of the connector.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Geometry (AREA)
  • Measuring Leads Or Probes (AREA)
PCT/JP2020/036221 2019-10-04 2020-09-25 プローブ WO2021065702A1 (ja)

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JP2021551177A JP7136362B2 (ja) 2019-10-04 2020-09-25 プローブ
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CN (1) CN114223098B (enrdf_load_stackoverflow)
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JPWO2021065702A1 (enrdf_load_stackoverflow) 2021-04-08
CN114223098A (zh) 2022-03-22
TW202120933A (zh) 2021-06-01
JP7136362B2 (ja) 2022-09-13
CN114223098B (zh) 2024-04-12

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