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WO2020122006A1 - Sonde - Google Patents

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Publication number
WO2020122006A1
WO2020122006A1 PCT/JP2019/048058 JP2019048058W WO2020122006A1 WO 2020122006 A1 WO2020122006 A1 WO 2020122006A1 JP 2019048058 W JP2019048058 W JP 2019048058W WO 2020122006 A1 WO2020122006 A1 WO 2020122006A1
Authority
WO
WIPO (PCT)
Prior art keywords
elastic body
plunger
connector
probe
elastic
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2019/048058
Other languages
English (en)
Japanese (ja)
Inventor
知明 小出
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing Co Ltd
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 Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Priority to JP2020560095A priority Critical patent/JP7095753B2/ja
Priority to CN201980082659.7A priority patent/CN113167817B/zh
Publication of WO2020122006A1 publication Critical patent/WO2020122006A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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

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, which is an object to be inspected, has been disclosed (for example, see Patent Document 1).
  • the probe of Patent Document 1 is a probe for inspecting the characteristics of a coaxial connector, and in particular, it 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 center conductors that can simultaneously contact a plurality of terminals of a multipolar connector.
  • an object of the present invention is to provide a probe capable of more accurately inspecting the characteristics of a connector terminal.
  • the probe of the present invention is a probe for inspecting the characteristics of a connector, in which a flange having a through hole is formed, and a base end portion which is one end portion and the other end portion.
  • a housing that has a tip portion that is an end portion, is inserted into the through hole of the flange, and that the base end portion can be fitted into the through hole, and that includes a coaxial cable and extends in the axial direction;
  • a first plunger attached to the tip end side of the housing with respect to the through hole, and a first plunger attached between the first plunger and the flange and capable of urging the first plunger and the flange in directions away from each other.
  • the first elastic body and the second elastic body are arranged so as to partially overlap each other in the axial direction of the housing, and the first plunger Has a partition wall that partitions a portion where the first elastic body and the second elastic body overlap.
  • the characteristics of the connector terminals can be inspected more accurately.
  • FIG. 1 is a schematic perspective view of a probe according to Embodiment 1.
  • FIG. Schematic side view of the probe in the first embodiment
  • FIG. 2 is a schematic vertical sectional view around the tip of the probe pin according to the first embodiment.
  • FIG. 3 is a schematic vertical sectional view showing an operation of arranging the connector in the recess according to the first embodiment (a partially enlarged view of FIG. 3)
  • FIG. 6B is a schematic vertical cross-sectional view showing the operation of arranging the connector in the recess according to the first embodiment (enlarged view of portion H in FIG. 6B).
  • Schematic longitudinal sectional view showing the operation of disposing the connector in the recess in the first embodiment.
  • FIG. 7B is a schematic vertical sectional view showing the operation of arranging the connector in the concave portion according to the first embodiment (enlarged view of portion I in FIG. 7B).
  • FIG. 8B is a schematic vertical sectional view showing the operation of arranging the connector in the concave portion according to the first embodiment (enlarged view of portion J in FIG. 8B).
  • FIG. 8B is a schematic vertical sectional view showing the operation of disposing the connector in the recess in the first embodiment.
  • FIG. 9B is a schematic vertical cross-sectional view showing the operation of arranging the connector in the recess according to the first embodiment (enlarged view of portion K in FIG. 9B).
  • Schematic vertical cross-sectional view of the probe in the first embodiment Schematic side view of the probe in the second embodiment
  • Enlarged view of part F of FIG. 12A Schematic longitudinal sectional view showing the operation of disposing the connector in the recess according to the second embodiment.
  • FIG. 13A is a schematic vertical cross-sectional view showing the operation of arranging the connector in the recess according to the second embodiment (enlarged view of G part in FIG. 13A).
  • FIG. 15A is a schematic vertical cross-sectional view showing the operation of arranging the connector in the recess according to the second embodiment (enlarged view of portion I in FIG. 15A).
  • FIG. 16A is a schematic vertical cross-sectional view showing an operation of arranging the connector in the recess according to the second embodiment (enlarged view of J portion in FIG. 16A).
  • a probe for inspecting the characteristics of a connector which includes a flange having a through hole, a base end which is an end on one side, and an end on the other side.
  • a second plunger attached to the distal end of the housing and held so as to be movable relative to the first plunger; and a second plunger attached between the second plunger and the first plunger, A second elastic body capable of urging the second plunger in a direction away from the first plunger, and an opening through which a probe pin electrically connected to the coaxial cable is inserted in a bottom portion of the second plunger.
  • the second plunger has a first position where the tip of the probe pin projects from the opening, and a second position where the tip of the probe pin is located closer to the base end than the opening.
  • the first elastic body and the second elastic body are arranged so as to partially overlap each other in the axial direction of the housing, and the first plunger is provided with the first elastic body.
  • a probe having a partition wall that partitions a portion where one elastic body and the second elastic body overlap.
  • the total length of the probe can be shortened.
  • the overall length of the probe it is possible to prevent the tip of the probe from shifting in a direction intersecting the axial direction when the connector contacts the bottom portion of the second plunger.
  • the probe pin and the terminal of the connector can be brought into contact with each other with higher accuracy, and the characteristic inspection of the terminal of the connector can be performed with higher accuracy.
  • the first elastic body is arranged inside the second elastic body at a position where the first elastic body and the second elastic body overlap with each other.
  • a probe To provide a probe.
  • the first plunger has an inward protrusion that protrudes inward from the partition wall to receive the first elastic body, and the second elastic body protrudes outward from the partition wall.
  • the probe according to the second aspect is provided, further comprising: an outer protrusion that receives the inner protrusion, and the inner protrusion is provided closer to the tip portion of the housing than the outer protrusion.
  • the first elastic body is arranged outside the second elastic body at a position where the first elastic body and the second elastic body overlap with each other.
  • the first elastic body is arranged outside the second elastic body at a position where the first elastic body and the second elastic body overlap with each other.
  • the first plunger has an outer protrusion protruding outward from the partition wall to receive the first elastic body, and the second elastic body protruding inward from the partition wall.
  • the probe according to the fourth aspect further comprising an inward projection that receives the inward projection, wherein the inward projection is provided closer to the base end portion of the housing than the outward projection.
  • the length by which the first elastic body and the second elastic body overlap in the axial direction is The probe according to any one of the first to fifth aspects, which is set to be longer than the axial length of the two elastic bodies that does not overlap with the first elastic body. With such a configuration, the total length of the probe can be further shortened.
  • the length by which the first elastic body and the second elastic body overlap in the axial direction is The probe according to any one of the first to sixth aspects, which is 1 ⁇ 3 or more of the length of one elastic body and 1 ⁇ 3 or more of the length of the second elastic body. With such a configuration, the total length of the probe can be further shortened.
  • the second plunger in a state before the connector is brought into contact with the bottom portion of the second plunger, the second plunger is in the second position, and the elastic force of the first elastic body is set.
  • the first elastic body starts compression before the second elastic body.
  • the elastic coefficient of the first elastic body is set to be larger than the elastic coefficient of the second elastic body, according to any one of the first to eighth aspects.
  • the probe according to any one of the first to ninth aspects wherein the first elastic body and the second elastic body are both springs.
  • the spring load and the length can be easily adjusted, and the degree of freedom in design is high.
  • the first elastic body and the second elastic body are in a compressed state shorter than their natural lengths in a state in which the second plunger is in the second position.
  • a probe according to any one of the first to tenth aspects is provided. According to such a configuration, by setting the respective elastic bodies in the compressed state, the first elastic body and the second elastic body can be compared with the case where either the first elastic body or the second elastic body has a natural length. It is possible to hold the elastic body in a precisely positioned state.
  • FIG. 1 to 3 are diagrams showing a schematic configuration of the probe 2 according to the first embodiment. 1 is a perspective view of the probe 2, FIG. 2 is a side view of the probe 2, and FIG. 3 is a vertical cross-sectional view of the probe 2.
  • the probe 2 is an inspection tool that inspects the characteristics of the connector 3.
  • the connector 3 of the first embodiment is a multipolar connector having a plurality of terminals.
  • the probe 2 includes a plunger 4, a coaxial cable 6, a flange 8, a housing 9, a first elastic body 10, a second elastic body 12, and a measurement connector 13.
  • the plunger 4 includes a first plunger 14, a second plunger 16, and a third plunger 23 (FIG. 3).
  • the first plunger 14, the second plunger 16, and the third plunger 23 are all members mounted around the housing 9.
  • the first plunger 14 is a member that partitions the first elastic body 10 and the second elastic body 12. As shown in FIG. 3, the first plunger 14 includes a partition wall 14A, an inner protruding portion 14B, and an outer protruding portion 14C.
  • the partition wall 14A is a portion that partitions the first elastic body 10 and the second elastic body 12, and has a cylindrical shape extending parallel to the axial direction A of the housing 9.
  • the inward protruding portion 14B is a portion protruding inward in the radial direction from the partition wall 14A.
  • the inner side in the radial direction means the inner side in the lateral direction (the direction orthogonal to the axial direction A in the first embodiment) which is the direction intersecting the axial direction A.
  • the outward projecting portion 14C is a portion that projects radially outward from the partition wall 14A.
  • the outer side in the radial direction means the outer side in the lateral direction that is a direction intersecting the axial direction A.
  • the inward protruding portion 14B is provided closer to the tip end portion in the axial direction A than the outward protruding portion 14C.
  • the inner protrusion 14B is provided at the tip of the partition wall 14A
  • the outer protrusion 14C is provided at the base end of the partition wall 14A.
  • the second plunger 16 is a member held in a relatively movable state with respect to the first plunger 14 on the tip side in the axial direction A with respect to the first plunger 14.
  • the second plunger 16 is attached to the distal end portion 21 of the housing 9 via the third plunger 23.
  • the second plunger 16 includes a fitting portion 16A and a connecting portion 16B.
  • the fitting portion 16A is a member for fitting with the connector 3.
  • the fitting portion 16A has a bottom portion 32 that fits with the connector 3.
  • the connecting portion 16B is a member for connecting the fitting portion 16A to the third plunger 23.
  • the fitting portion 16A is press-fitted into the connecting portion 16B and is movable integrally with the connecting portion 16B.
  • a recess 17 for fitting the connector 3 is formed on the bottom 32 of the fitting portion 16A. The detailed configuration around the recess 17 will be described later.
  • a plurality of coaxial cables 6 are inserted inside the housing 9.
  • the coaxial cable 6 is a rod-shaped member that is electrically connected to the measurement connector 13 described above.
  • the coaxial cable 6 is also electrically connected to a probe pin 18 described later, and has a function of passing a signal between the probe pin 18 and the measurement connector 13.
  • Flange 8 is a member for attaching probe 2 to a predetermined facility (not shown).
  • the equipment includes, for example, a sorter for sorting the printed circuit board on which the connector 3 is mounted based on the result of the characteristic inspection of the connector 3.
  • a housing 9 is inserted and fitted in the flange 8.
  • the flange 8 is formed with a through hole 20 having an inclined surface that is inclined so as to be narrowed inward toward the lower side, and the base end portion 22 of the housing 9 is fitted into the through hole 20. ..
  • the housing 9 is a member that is inserted into the through hole 20 of the flange 8 and fitted therein, and holds the above-described first plunger 14 and the like.
  • the housing 9 is formed in a tubular shape that extends in the axial direction A while enclosing the coaxial cable 6, and includes a distal end portion 21, a proximal end portion 22, and a tubular portion 24.
  • the third plunger 23 is press-fitted into the tip portion 21.
  • the second plunger 16 is held by the distal end portion 21 via the third plunger 23.
  • the base end portion 22 is a portion which is inserted into and fitted into the through hole 20 of the flange 8.
  • the base end portion 22 has an outer surface which is inclined so as to be constricted inward toward the lower side in accordance with the inclined surface of the flange 8 forming the through hole 20.
  • the tubular portion 24 is a portion extending between the distal end portion 21 and the proximal end portion 22.
  • the first elastic body 10 is attached to the outer peripheral portion of the tubular portion 24.
  • the first elastic body 10 is an elastic body provided between the flange 8 and the first plunger 14.
  • the first elastic body 10 urges the flange 8 and the first plunger 14 in a direction away from each other (axial direction A).
  • the first elastic body 10 in the first embodiment is in a state of being compressed in the axial direction A in the state shown in FIG. 3, and is shorter than its natural length.
  • the first elastic body 10 in the compressed state has an elastic force F1 that tends to extend toward the natural length.
  • the elastic force F1 acts as an urging force that urges the flange 8 and the first plunger 14 in the directions away from each other.
  • the base end of the first elastic body 10 is press-fitted and fixed in a recess provided in the lower surface of the flange 8.
  • the tip portion of the first elastic body 10 is in contact with the inward protruding portion 14B of the first plunger 14.
  • the second elastic body 12 is an elastic body provided between the first plunger 14 and the second plunger 16.
  • the second elastic body 12 biases the second plunger 16 in a direction away from the first plunger 14 (axial direction A). Similar to the first elastic body 10, the second elastic body 12 is compressed in the axial direction A in the state shown in FIG. 3 and is shorter than its natural length.
  • the second elastic body 12 in the compressed state has an elastic force F2 that tends to extend toward the natural length, and the elastic force F2 urges the second plunger 16 in a direction away from the first plunger 14. It acts as a biasing force.
  • the base end portion of the second elastic body 12 is in contact with the outward protruding portion 14C of the first plunger 14.
  • the tip portion of the second elastic body 12 is in contact with the fitting portion 16A of the second plunger 16.
  • the first elastic body 10 and the second elastic body 12 are arranged so as to partially overlap with each other in the axial direction A of the housing 9. Thereby, the total length of the probe 2 can be shortened.
  • the first elastic body 10 is arranged inside the second elastic body 12.
  • Both the first elastic body 10 and the second elastic body 12 in the first embodiment are spiral springs. Both the first elastic body 10 and the second elastic body 12 have elastic coefficients k1 and k2, respectively, and are contracted by a contraction amount x1 and x2 from the natural length in the fitted state shown in FIG.
  • the elastic force F1 of the first elastic body 10 described above can be roughly estimated as a value obtained by multiplying the elastic coefficient k1 and the shrinkage amount x1.
  • the elastic force F2 of the second elastic body 12 can be roughly estimated as a value obtained by multiplying the elastic coefficient k2 and the shrinkage amount x2.
  • the elastic modulus may be referred to as “elastic modulus” and “elastic constant”.
  • a load is gradually applied to the first elastic body 10 and the second elastic body 12, and which is displaced first. It can be determined by seeing. For example, when the first elastic body 10 is displaced first, it can be determined that the elastic force F1 of the first elastic body 10 is smaller than the elastic force F2 of the second elastic body 12.
  • the elastic force F1 of the first elastic body 10 is set to be smaller than the elastic force F2 of the second elastic body 12.
  • the elastic coefficient k1, the contraction amount x1, the elastic coefficient k2 and the contraction amount x2 of the second elastic body 12 are set so that the elastic force F1 becomes smaller than the elastic force F2.
  • the probe pin 18 is a member that comes into contact with the terminal of the connector 3 and is electrically conductive.
  • the probe pin 18 is arranged inside the third plunger 23.
  • the periphery of the probe pin 18 is surrounded by the resin 27, and the probe pin 18 is positioned inside the third plunger 23.
  • the portions other than the tips of the probe pins 18 are hidden by the resin 27, but in different cross sections, the probe pins 18 extend to the position where they are connected to the substrate 26 located above.
  • the board 26 is a member that electrically connects the probe pin 18 and the coaxial cable 6.
  • the board 26 has wiring for electrically connecting the coaxial cable 6 and the probe pin 18 when the pitch is different from the pitch of the coaxial cable 6, and the coaxial cable 6 and the probe pin 18 are connected to the wiring. ..
  • the pitch and the number of coaxial cables 6 are the same as the pitch and the number of probe pins 18, the coaxial cable 6 and the probe pins 18 may be directly contacted without providing the substrate 26.
  • the other end (tip) of the probe pin 18 is arranged in the vicinity of the opening 28 provided in the bottom 32 of the second plunger 16.
  • the opening 28 is an opening formed in the recess 17.
  • the tip of the probe pin 18 is arranged inside the opening 28 and is not exposed to the outside from the opening 28.
  • the second plunger 16 described above has a first position where the tip of the probe pin 18 projects from the opening 28 and a second position where the tip of the probe pin 18 is located inside the opening 28 (on the side of the proximal end 22). Can be moved between positions. In FIG. 3, the second plunger 16 is shown in the second position.
  • the measurement connector 13 is a connector for connecting the coaxial cable 6 to an external measuring device (not shown).
  • a plurality of measurement connectors 13 are provided.
  • FIG. 4 is an enlarged vertical cross-sectional view around the tip of the probe pin 18, and corresponds to the initial state in which the base end portion 22 of the housing 9 is fitted into the through hole 20 of the flange 8 as shown in FIG. ..
  • the connector 3 is provided with a plurality of terminals 3a.
  • the position of the probe pin 18 is set so that the tip of the probe pin 18 can come into contact with the terminal 3a when the connector 3 is placed in the recess 17. This makes it possible to bring the plurality of probe pins 18 into contact with the plurality of terminals 3a of the connector 3 at the same time and simultaneously perform the characteristic inspection of the respective terminals 3a.
  • a concave portion 17 for fitting the connector 3 is formed in the bottom portion 32 of the second plunger 16. Due to the recess 17, the bottom portion 32 of the second plunger 16 has an inwardly recessed outer shape.
  • the recess 17 of the first embodiment is formed by the bottom wall 34, the first side wall 36, and the second side wall 38 of the second plunger 16.
  • the bottom wall 34 is a wall portion of the second plunger 16 that forms the bottom surface of the recess 17.
  • the first side wall 36 is a side wall that rises from the periphery of the bottom wall 34 so as to be orthogonal to the bottom wall 34.
  • the second side wall 38 is a side wall rising from the periphery of the first side wall 36.
  • the second side wall 38 in the first embodiment extends so as to radially spread outward in the direction away from the first side wall 36.
  • the second side wall 38 having such a shape functions as a guide portion that guides the connector 3 to the inside of the recess 17.
  • FIGS. 5 to 9B are vertical sectional views showing the operation of disposing the connector 3 in the recess 17.
  • 5, 6A, 7A, 8A, and 9A are enlarged views of FIGS. 3, 5B, 6B, 7B, 8B, and 9B, respectively.
  • the connector 3 is brought close to the recess 17 (arrow B). From this, as shown in FIG. 6A, the connector 3 starts contact with the second side wall 38 of the second plunger 16 (right side in the figure).
  • the second side wall 38 has a tapered shape that is inclined so as to be narrowed inward. As a result, the connector 3 in contact with the second side wall 38 is guided toward the inside of the recess 17 (arrow C).
  • an upward external force Fp acts on the second plunger 16.
  • the external force Fp acts as a force that further compresses the second elastic body 12 that is in contact with the fitting portion 16A of the second plunger 16, and further the first elastic body 10 that is in contact with the first plunger 14. It acts simultaneously as a compressing force.
  • the first elastic body 10 and the second elastic body 12 both have elastic forces F1 and F2 in a compressed state.
  • the elastic force F1 of the first elastic body 10 is set to be smaller than the elastic force F2 of the second elastic body 12. Therefore, the first elastic body 10 starts to compress before the second elastic body 12.
  • FIG. 6B The state in which the first elastic body 10 is compressed is shown in FIG. 6B.
  • members such as the housing 9, the first plunger 14, the second plunger 16 and the third plunger 23 are integrally lifted with respect to the flange 8 as shown in FIG. 6B. (Arrow D).
  • the housing 9 and the members around the housing 9 can change their postures according to the position of the connector 3. Specifically, the housing 9 and the members around the housing 9 can rotate in the circumferential direction R around the axial direction A.
  • the second plunger 16 does not move relative to the first plunger 14 and the third plunger 23, and maintains the state of being supported by the third plunger 23.
  • the second plunger 16 is in the second position with respect to the first plunger 14. That is, the probe pin 18 is arranged inside the opening 28 of the recess 17 described above, and does not project to the outside of the opening 28. As a result, the tip of the probe pin 18 cannot contact the terminal 3a of the connector 3. With such a configuration, it is possible to prevent the probe pin 18 from being damaged by the contact with the connector 3 during the guiding of the connector 3 in the recess 17.
  • the connector 3 is positioned at a predetermined measurement position in the recess 17. More specifically, the connector 3 is arranged at a position surrounded by the bottom wall 34 and the first side wall 36 shown in FIG. 4, and is adjacent to the opening 28.
  • FIGS. 8A and 8B A state in which the second elastic body 12 is compressed is shown in FIGS. 8A and 8B.
  • the second plunger 16 moves and rises in the axial direction A so as to approach the first plunger 14 (arrow E).
  • the connecting portion 16B of the second plunger 16 that is in contact with the third plunger 23 moves upward so as to separate from the third plunger 23.
  • the probe pin 18 is held integrally with the substrate 26 and the third plunger 23 against the rise of the second plunger 16, and the vertical position of the probe pin 18 is maintained.
  • the second plunger 16 moves from a second position where the tip of the probe pin 18 is arranged inside the opening 28 to a first position where the tip of the probe pin 18 projects from the opening 28. Become.
  • the tip of the probe pin 18 is exposed from the opening 28 of the recess 17 and is in contact with the terminal 3 a of the connector 3 as the second plunger 16 is lifted. In this way, the probe pin 18 comes into contact with the terminal 3a of the connector 3, whereby the coaxial cable 6 is electrically connected to the plurality of terminals 3a of the connector 3 through the probe pin 18, and the characteristic inspection of each terminal 3a is performed simultaneously. be able to.
  • FIGS. 9A and 9B The state in which the second plunger 16 is further raised is shown in FIGS. 9A and 9B.
  • the bottom portion of the third plunger 23 is in contact with the connector 3.
  • the upward load of the connector 3 acts not only on the second plunger 16 but also on the third plunger 23.
  • the elastic coefficient k1 of the first elastic body 10 is set to be larger than the elastic coefficient k2 of the second elastic body 12. According to such a setting, after the compression of the second elastic body 12 is started, the second elastic body 12 having a smaller elastic coefficient k2 is smaller than the first elastic body 10 having a large elastic coefficient k1. Compressed preferentially. In this way, the compression of the second elastic body 12 can be generated preferentially to the compression of the first elastic body 10, and the probe pin 18 can be more reliably brought into contact with the terminal 3a of the connector 3.
  • the respective lengths of the first elastic body 10 and the second elastic body 12 are devised. The details will be described with reference to FIG.
  • FIG. 10 is a vertical sectional view showing an initial state before the connector 3 is placed in the recess 17.
  • the first elastic body 10 has a length D1 and the second elastic body has a length D2.
  • the length D1 is a length obtained by subtracting the shrinkage amount x1 from the natural length of the first elastic body 10
  • the length D2 is a length obtained by subtracting the shrinkage amount x2 from the natural length of the second elastic body 12.
  • the first elastic body 10 and the second elastic body 12 are arranged so as to partially overlap each other in the axial direction A, and the overlapping length thereof is D3. In this way, by providing the overlapping length D3 of the first elastic body 10 and the second elastic body 12, the total length of the probe 2 can be shortened as compared with the case where the overlapping length D3 is not provided.
  • the tip of the probe 2 is likely to be displaced in the lateral direction when the connector 3 is placed in the recess 17, which makes positioning of the connector 3 difficult.
  • the tip of the probe 2 is likely to be displaced in the lateral direction when the connector 3 is placed in the recess 17, which makes positioning of the connector 3 difficult.
  • the first elastic body 10 and the second elastic body 12 in the axial direction A and shortening the total length of the probe 2, positioning of the connector 3 is facilitated. Thereby, the accuracy of the characteristic inspection of the terminal 3a of the connector 3 can be improved.
  • the overlapping length D3 of the first elastic body 10 and the second elastic body 12 is set to be longer than the length D4 of the second elastic body 12 that does not overlap the first elastic body 10. .. With such a length setting, the total length of the probe 2 can be further shortened.
  • the overlapping length D3 When setting the overlapping length D3, it may be set to 1/3 or more of the length D1 of the first elastic body 10 and 1/3 or more of the length D2 of the second elastic body 12. Alternatively, it may be set to 1/3 or more of the natural length (>D1) of the first elastic body 10 and 1/3 or more of the natural length (>D2) of the second elastic body 12. Even with such a length setting, the total length of the probe 2 can be shortened.
  • the first elastic body 10 is arranged inside the second elastic body 12 at the position where the first elastic body 10 and the second elastic body 12 overlap in the axial direction A. There is. According to such a design, it is possible to reduce the size of the first elastic body 10 in the horizontal direction while shortening the length of the second elastic body 12 in the vertical direction. Further, since the outward projecting portion 14C of the first plunger 14 can be arranged far away from the flange 8, the first elastic body 10 is compressed and the housing 9 and the like rises relative to the flange 8. At this time, it is possible to secure a sufficient movement distance.
  • the design of lengthening the first elastic body 10 becomes easier.
  • lengthening the first elastic body 10 it is possible to secure a longer sliding amount of the entire probe 2 due to expansion and contraction of the first elastic body 10. Further, since the inward protruding portion 14C is unlikely to interfere with the first elastic body 10, the probe 2 can easily slide smoothly.
  • the probe 2 includes the flange 8, the housing 9, the first elastic body 10, the second elastic body 12, the first plunger 14, and the second plunger 16.
  • the bottom portion 32 of the second plunger 16 is formed with an opening 28 through which the probe pin 18 electrically connected to the coaxial cable 6 is inserted.
  • the second plunger 16 is axially arranged between a first position where the tip of the probe pin 18 projects from the opening 28 and a second position where the tip of the probe pin 18 is arranged inside the opening 28. You can move to A.
  • first elastic body 10 and the second elastic body 12 are arranged so as to partially overlap with each other in the axial direction A of the housing 9, and the first plunger 14 includes the first elastic body 10 and the second elastic body 12. It has a partition wall 14A for partitioning the overlapping portion.
  • the total length of the probe 2 can be shortened.
  • the probe pin 18 and the terminal 3a of the connector 3 can be brought into contact with each other with higher accuracy, and the characteristic inspection of the terminal 3a of the connector 3 can be performed with higher accuracy.
  • the first plunger 14 has an inward projection 14B that projects inward from the partition wall 14A to receive the first elastic body 10, and an outward projection 14C that projects outward from the partition wall 14A to receive the second elastic body 12.
  • the inward protruding portion 14B is provided closer to the distal end portion 21 side of the housing 9 than the outward protruding portion 14C.
  • the connector 3 is arranged in the recess 17 of the second plunger 16. Then, when the second plunger 16 is pressed, the first elastic body 10 is compressed first. As a result, the fitting between the housing 9 and the flange 8 is released, and the connector 3 can be guided inside the recess 17 while bringing the housing 9 closer to a desired posture. Further, by delaying the compression of the second elastic body 12 with respect to the compression of the first elastic body 10, the timing at which the probe pin 18 contacts the terminal 3 a of the connector 3 is delayed. This can prevent the probe pin 18 from being accidentally damaged by the contact with the connector 3 when guiding the connector 3 while suppressing the positional displacement between the terminal 3a of the connector 3 and the probe pin 18.
  • FIGS. 11 to 16B A probe 40 according to the second embodiment of the present invention will be described with reference to FIGS. 11 to 16B.
  • the second embodiment will mainly describe differences from the first embodiment. Moreover, the same or equivalent configurations are denoted by the same reference numerals, and description thereof will be omitted.
  • FIGS. 11 to 12B are side views of the probe 40 according to the second embodiment
  • FIG. 12A is a vertical sectional view of the probe 40
  • FIG. 12B is a partially enlarged view of FIG. 12A.
  • the probe 40 of the second embodiment differs from the probe 2 of the first embodiment mainly in that the first elastic body 42 is arranged outside the second elastic body 44.
  • the first plunger 46 has a partition wall 46A, an outer protruding portion 46B, and an inner protruding portion 46C.
  • the partition wall 46A is a portion extending in the axial direction A of the housing 48 so as to partition a portion where the first elastic body 42 and the second elastic body 44 overlap.
  • the outer projecting portion 46B is a portion that projects radially outward from the partition wall 46A
  • the inner projecting portion 46C is a portion that projects radially inward from the partition wall 46A.
  • the outer protrusion 46B is provided at the tip of the partition wall 14A, and the inner protrusion 46C is provided at the base end of the partition wall 14A. That is, the inward protrusion 46C is provided closer to the base end side in the axial direction A than the outward protrusion 46B.
  • the first elastic body 42 is provided between the flange 8 and the first plunger 46.
  • the first elastic body 42 is in a state of being compressed in the axial direction A in the state shown in FIG. 12A, and has an elastic force F3 that tends to extend toward the natural length.
  • the elastic force F3 can be roughly estimated as a value obtained by multiplying the elastic coefficient k3 and the shrinkage amount x3.
  • the base end of the first elastic body 42 is press-fitted and fixed in a recess provided on the lower surface of the flange 8.
  • the tip portion of the first elastic body 42 is in contact with the outer protruding portion 46B of the first plunger 46.
  • the second elastic body 44 is provided between the first plunger 46 and the second plunger 16.
  • the second elastic body 44 is compressed in the axial direction A in the state shown in FIG. 12A and has an elastic force F4 that tends to extend toward the natural length.
  • the elastic force F4 can be roughly estimated as a value obtained by multiplying the elastic coefficient k4 and the shrinkage amount x4.
  • the base end portion of the second elastic body 44 is in contact with the inward protruding portion 46C of the first plunger 46.
  • the tip portion of the second elastic body 44 is in contact with the connecting portion 16B of the second plunger 16.
  • the elastic coefficient k3, the amount of contraction x3, and the second amount of contraction of the first elastic body 42 are set so that the elastic force F3 of the first elastic body 42 becomes smaller than the elastic force F4 of the second elastic body 44.
  • the elastic coefficient k4 and the shrinkage amount x4 of the elastic body 44 are set.
  • the probe 40 of the second embodiment can operate similarly to the probe 2 of the first embodiment. Specifically, description will be made with reference to FIGS. 13A to 16B.
  • 13A to 16B are vertical sectional views showing the operation of disposing the connector 3 in the recess 17.
  • 13B, 14B, 15B, and 16B are partially enlarged views of FIGS. 13A, 14A, 15A, and 16A, respectively.
  • the connector 3 does not contact the bottom portion 32 of the second plunger 16, and neither the first elastic body 42 nor the second elastic body 44 receives the compressive load from the connector 3.
  • the second plunger 16 is in the second position in which the tip of the probe pin 18 is arranged inside the opening 28.
  • the connector 3 is brought close to the recess 17 (arrow F). From this, as shown in FIG. 13B, the connector 3 starts contact with the second side wall 38 of the second plunger 16 (right side in the figure).
  • the connector 3 in contact with the second side wall 38 is guided toward the inside of the recess 17 (arrow G).
  • the external force Fq acts as a force that further compresses the second elastic body 44 that is in contact with the fitting portion 16A of the second plunger 16, and further causes the first elastic body 42 that is in contact with the first plunger 46. It acts simultaneously as a compressing force.
  • the elastic force F3 of the first elastic body 42 is set to be smaller than the elastic force F4 of the second elastic body 44 as in the first embodiment. Therefore, the first elastic body 42 starts to compress before the second elastic body 44.
  • FIG. 13A The compressed state of the first elastic body 42 is shown in FIG. 13A.
  • members such as the housing 48, the first plunger 46, the second plunger 16 and the third plunger 23 are integrally raised with respect to the flange 8. (Arrow H).
  • the housing 48 is lifted to release the fitting between the base end portion 22 of the housing 48 and the through hole 20 of the flange 8. Thereby, the housing 48 and the members around the housing 48 can change their postures according to the position of the connector 3. Specifically, the housing 48 and the members around the housing 48 can rotate in the circumferential direction R around the axial direction A.
  • the second plunger 16 does not move relative to the first plunger 46 and the third plunger 23, and maintains the state of being supported by the third plunger 23.
  • the second plunger 16 is in the second position with respect to the first plunger 46. That is, the probe pin 18 is arranged inside the opening 28 of the recess 17 described above, and does not project to the outside of the opening 28. As a result, the tip of the probe pin 18 cannot contact the terminal 3a of the connector 3. With such a configuration, it is possible to prevent the probe pin 18 from being damaged by the contact with the connector 3 while the connector 3 is being guided in the recess 17.
  • the connector 3 is positioned at a predetermined measurement position in the recess 17.
  • FIGS. 15A and 15B A state in which the second elastic body 44 is compressed is shown in FIGS. 15A and 15B.
  • the second plunger 16 moves and rises in the axial direction A so as to approach the first plunger 46 (arrow I).
  • the connecting portion 16B of the second plunger 16 that is in contact with the third plunger 23 moves upward so as to separate from the third plunger 23.
  • the probe pin 18 is held integrally with the substrate 26 and the third plunger 23 against the rise of the second plunger 16, and the vertical position of the probe pin 18 is maintained.
  • the second plunger 16 moves from a second position where the tip of the probe pin 18 is arranged inside the opening 28 to a first position where the tip of the probe pin 18 projects from the opening 28. Become.
  • the tip of the probe pin 18 is exposed from the opening 28 of the recess 17 and is in contact with the terminal 3 a of the connector 3 as the second plunger 16 is lifted. In this way, the probe pin 18 comes into contact with the terminal 3a of the connector 3, whereby the coaxial cable 6 is electrically connected to the plurality of terminals 3a of the connector 3 through the probe pin 18, and the characteristic inspection of each terminal 3a is performed simultaneously. be able to.
  • FIGS. 16A and 16B The state where the second plunger 16 is further raised is shown in FIGS. 16A and 16B. In the state shown in FIGS. 16A and 16B, the bottom portion of the third plunger 23 is in contact with the connector 3. In this state, the upward load of the connector 3 acts not only on the second plunger 16 but also on the third plunger 23.
  • the connector 3 is disposed in the recess 17 of the second plunger 16 and When the second plunger 16 is pressed, the first elastic body 42 is compressed first. As a result, the fitting between the housing 48 and the flange 8 is released, and the connector 3 can be guided inside the recess 17 while bringing the housing 48 closer to a desired posture. Further, by delaying the compression of the second elastic body 44 with respect to the compression of the first elastic body 42, the timing at which the probe pin 18 contacts the terminal 3a of the connector 3 is delayed. This can prevent the probe pin 18 from being accidentally damaged by the contact with the connector 3 when guiding the connector 3 while suppressing the positional displacement between the terminal 3a of the connector 3 and the probe pin 18.
  • the total length of the probe 2 can be shortened. This can prevent the tip of the probe 40 from shifting in a direction intersecting the axial direction A when the connector 3 contacts the bottom portion 32 of the second plunger 16. Thereby, the probe pin 18 and the terminal 3a of the connector 3 can be brought into contact with each other with higher accuracy, and the characteristic inspection of the terminal 3a of the connector 3 can be performed with higher accuracy.
  • the first elastic body 42 is arranged outside the second elastic body 44. According to such a design, it is possible to reduce the size of the second elastic body 44 in the horizontal direction while shortening the length of the first elastic body 42 in the vertical direction. Since the lateral dimension of the first elastic body 42 is larger than the lateral dimension of the second elastic body 44, the verticality of the housing 48 can be more accurately ensured by the first elastic body 42. .. That is, as compared with the configuration in which the first elastic body 10 is arranged inside the second elastic body 12 as in the first embodiment, the area in which the first elastic body 42 contacts the flange 8 becomes larger, It is difficult for the entire probe 40 to tilt in the lateral direction.
  • the first plunger 46 projects outward from the partition wall 46A to receive the first elastic body 42, and the outward projecting portion 46B projects from the partition wall 46A to receive the second elastic body 44. It has an inward projection 46C.
  • the inner protrusion 46C is provided closer to the base end of the housing 48 than the outer protrusion 46B.
  • the present invention has been described with reference to the above-described first and second embodiments, the present invention is not limited to the above-described first and second embodiments.
  • the case where the plurality of coaxial cables 6 and the plurality of probe pins 18 are provided and the characteristic inspection of the corresponding terminals 3a of the connector 3 is performed at the same time has been described.
  • the number of coaxial cables 6 and probe pins 18 different from those in the first and second embodiments may be provided according to the number of terminals 3a for which the characteristic inspection is desired in the connector 3.
  • the connector 3 is not limited to a multipolar connector having a plurality of terminals 3a, and may be a single polar connector having only one terminal.
  • the present invention is not limited to such a case.
  • a projection may be provided instead of the recess 17, and the projection may be inserted into a gap provided in the connector 3 to fit the connector 3 in any desired form.
  • the first side wall 36 extends vertically with respect to the bottom wall 34, and the second side wall 38 narrows inward.
  • the inclined surface is completely inclined
  • the present invention is not limited to such a case.
  • the inclined surface like the second side wall 38 may not be provided. Even in such a case, it is possible to arrange the connector 3 at a predetermined measurement position in the recess 17 and perform the characteristic inspection of the terminal 3a.
  • the case where the elastic coefficient k1 of the first elastic body 10 is set to be larger than the elastic coefficient k2 of the second elastic body has been described, but the case is not limited to such a case. If the elastic force F1 of the first elastic body 10 is smaller than the elastic force F2 of the second elastic body 12, the elastic coefficient k1 of the first elastic body 10 and the elastic coefficient k2 of the second elastic body are set to arbitrary values. Good. The same applies to the second embodiment.
  • the present invention is not limited to such a case, and any elastic body other than springs may be used. ..
  • any elastic body other than springs may be used. ..
  • the spring load and length can be easily adjusted, so the degree of freedom in design is high.
  • the sliding distance can be made larger than that of the elastic rubber, the stroke related to the sliding of the entire housing 9 can be lengthened. The same applies to the second embodiment.
  • the first elastic body 10 and the second elastic body 12 are compressed to be shorter than their natural lengths before the connector 3 is placed in the recess 17 of the second plunger 16.
  • the case where the vehicle is in the open state has been described, but the case is not limited to such a case. If the elastic force F1 of the first elastic body 10 is smaller than the elastic force F2 of the second elastic body 12, each of the first elastic body 10 and the second elastic body 12 has a natural length and is not compressed. Good. The same applies to the second embodiment.
  • the present invention is applicable to any probe that inspects the characteristics of a connector.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Leads Or Probes (AREA)

Abstract

L'invention concerne une sonde permettant l'inspection de caractéristique de connecteur comprenant une bride, un boîtier, un premier piston, un premier corps élastique, un second piston et un second corps élastique. Dans le fond du second piston, une ouverture est formée et permet le passage à travers cette dernière d'une broche de sonde électriquement connectée à un câble coaxial. Le second piston peut se déplacer entre une première position dans laquelle l'extrémité distale de la broche de sonde est amenée à dépasser de l'ouverture et une seconde position dans laquelle l'extrémité distale de la broche de sonde est disposée plus près du côté d'une partie proximale que l'ouverture. Le premier corps élastique et le second corps élastique sont disposés de manière à se chevaucher partiellement dans la direction axiale du boîtier. Le premier piston possède une paroi de séparation permettant de séparer les emplacements où le premier corps élastique et le second corps élastique se chevauchent.
PCT/JP2019/048058 2018-12-13 2019-12-09 Sonde Ceased WO2020122006A1 (fr)

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JP2020560095A JP7095753B2 (ja) 2018-12-13 2019-12-09 プローブ
CN201980082659.7A CN113167817B (zh) 2018-12-13 2019-12-09 探针

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CN113848515A (zh) * 2021-05-17 2021-12-28 昆山德普福电子科技有限公司 探测器
WO2022091931A1 (fr) * 2020-10-27 2022-05-05 株式会社ヨコオ Gabarit d'inspection
WO2022113489A1 (fr) * 2020-11-27 2022-06-02 Ｉ－Ｐｅｘ株式会社 Sonde
JP7236110B2 (ja) 2018-05-28 2023-03-09 国立研究開発法人理化学研究所 オーバーサンプリングによる断層画像データの取得方法、取得装置、および制御プログラム
WO2023084888A1 (fr) * 2021-11-12 2023-05-19 株式会社村田製作所 Sonde de mesure

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WO2022091931A1 (fr) * 2020-10-27 2022-05-05 株式会社ヨコオ Gabarit d'inspection
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