JP5450156B2 - Measuring instrument for contact characteristics of differential connectors - Google Patents

Description

  The present invention relates to a contact portion characteristic measuring instrument for a differential connector, and measures the contact portion characteristic of a differential connector for measuring the electrical characteristics of the contact portion between terminals constituting a pair of differential connectors connected to each other. It is about a vessel.

  2. Description of the Related Art Conventionally, in the field of automobiles and the like, a pair of differential connectors 101 and 102 that are connected to each other are known as shown in FIGS. The differential connector 101 is a male connector and is connected to a terminal of a twisted pair cable. The differential connector 102 is a female connector, is attached to a substrate, and is connected to wiring on the substrate.

  As shown in FIG. 8, the male differential connector 101 includes a cylindrical metal male housing 101a, a terminal 101b inserted into the male housing 101a, and the terminal 101b in the male housing 101a. And a resin-made holding part 101c. The terminal 101b is held by the holding unit 101c so that, for example, a plurality of terminal rows arranged in the horizontal direction in the figure are arranged in two rows vertically. A twisted pair cable (not shown) is connected to the end of the terminal 101b opposite to the differential connector 102 by soldering or the like.

  The holding portion 101c is inserted into the housing 101a, and the terminal 101b is inserted therein. A concave portion 101d is provided in the center of the end of the holding portion 101c on the differential connector 102 side, and an upper row of terminals 101b is disposed on the inner surface of the concave portion 101d on the upper side of the drawing, and the concave portion 101d A lower row of terminals 101b is arranged on the inner surface on the lower side of the drawing.

  On the other hand, as shown in FIG. 9, a female differential connector 102 includes a cylindrical metal female housing 102a, a terminal 102b inserted into the female housing 102a, and the terminal 102b. And a resin-made holding portion 102c held in the female housing 102a. The terminal 102b is provided with a spring piece 102e that bends in the vertical direction in the figure at the end of the differential connector 101 side.

  Further, the terminal 102b is held by the holding portion 102c so that, for example, a plurality of terminal rows arranged in the horizontal direction in the figure are arranged vertically in the same manner as the terminal 101b described above. A wiring formed on a substrate (not shown) is connected to the end of the terminal 102b opposite to the differential connector 101 by soldering or the like.

  The holding portion 102c is inserted into the female housing 102a, and a terminal 102b is inserted therein. A flat plate-like convex portion 102d is provided at the center of the end portion of the holding portion 102c on the differential connector 101 side, and an upper row of terminals 102b is disposed on the upper surface of the convex portion 102d. Lower row terminals 102b are arranged on the lower surface.

  As shown in FIG. 10, when the male housing 101 a of the differential connector 101 is fitted into the female housing 102 a of the differential connector 102, the convex portion of the differential connector 102 is inserted into the concave portion 101 d of the differential connector 101. 102d is inserted, the spring piece 102e of the upper row terminal 102b of the differential connector 102 is in spring contact with the upper row terminal 102b of the differential connector 101, and the spring piece 102e of the lower row terminal 102b of the differential connector 102 is different. The spring contacts the terminal 102b in the lower row of the moving connector 101. Thereby, the terminal 101b of the differential connector 101 and the terminal 102b of the differential connector 102 are connected.

  In the differential connectors 101 and 102 having the above-described configuration, the contact resistance of the contact portion between the terminals 101b and 102b constituting the pair of differential connectors 101 and 102 that are connected to each other for performance improvement, surface oxide film generation, and the like It is required to grasp the influence on the high-frequency characteristics by. For this reason, conventionally, a pair of differential connectors 101 and 102, which are products, are connected to each other and high frequency electrical characteristics are measured using a spectrum analyzer or the like.

  However, a twisted pair cable is connected to the differential connector 101 which is the product described above. This twisted pair cable is composed of a pair of electric wires twisted with each other. In order to connect to the terminal 101b of the differential connector 101, the ends of the pair of electric wires twisted together are twisted back to the terminal 101b of the differential connector 101. Need to connect. Since the high-frequency characteristics greatly vary depending on the amount of untwisting and the like, it is difficult to grasp the influence on the high-frequency characteristics due to only the contact portion between the terminals 101b and 102b.

  Moreover, as an example of the measurement of the high frequency electrical characteristics described above, for example, the high frequency electrical characteristics with respect to the contact resistance of the terminals 101b and 102b can be measured. The contact resistance between the terminals 101b and 102b is determined by the contact load between the terminals 101b and 102b. For this reason, it is necessary to accurately grasp the contact load of the terminals 101b and 102b, that is, the contact resistance.

  In the conventional method of connecting a pair of differential connectors 101 and 102 as a product and measuring the high frequency characteristics, the contact load cannot be directly measured. The insertion force of the male-type differential connector 101 was measured as a contact load. However, since the insertion force described above includes the sliding force between the terminals 101b and 102b in addition to the contact load between the terminals 101b and 102b, an accurate contact load cannot be grasped, and the contact resistance and The relationship with high frequency could not be measured. Moreover, as a measuring device which measures the high frequency characteristic of the differential connectors 101 and 102, what was described in patent documents 1-3 is mentioned, for example.

JP 2008-203273 A JP 2001-85118 A JP-A-6-224659

  Then, this invention makes it a subject to provide the contact part measuring device of the differential connector which can measure accurately the electrical property of only the contact part of the terminals which comprise a pair of differential connector.

  The invention according to claim 1 for solving the above-described problem is a measurement of contact portion characteristics of a differential connector for measuring electrical characteristics of contact portions of terminals constituting a pair of differential connectors connected to each other. A first board having a pair of first differential transmission lines on the surface, a second board having a pair of second differential transmission lines on the surface, and the first board. And a pair of first coaxial connectors respectively connected to one end of the pair of first differential transmission paths, and a pair attached to the second substrate and connected to one end of the pair of second differential transmission paths. And the pair of spring pieces respectively provided at the other ends of the pair of second differential transmission lines, and the pair of spring pieces provided on the first substrate. The first differential transmission line is in contact with the other end of the first differential transmission line. Consists in the contact portion characteristic measuring apparatus of a differential connector, characterized in that overlapping the first substrate and the second substrate.

  According to a second aspect of the present invention, each of the pair of spring pieces is provided at an edge portion of the second substrate, and is provided so as to bend in a direction perpendicular to an end surface on the provided edge portion side. The contact part characteristic measuring instrument for a differential connector according to claim 1, wherein the second board and the second board are stacked so as to be orthogonal to each other.

  According to a third aspect of the present invention, the first substrate is disposed on both ends of the first substrate in the arrangement direction of the pair of spring pieces, and is disposed closer to the second substrate than the surface of the first substrate. A pair of first guide portions attached to the substrate, a second guide portion attached to the second substrate sandwiched between the pair of first guide portions, and one of the first guide portion and the second guide portion A slide groove extending in a direction parallel to the first substrate and perpendicular to the second substrate is provided, and the other of the first guide portion and the second guide portion extends in the slide groove. 3. A contact characteristic measuring apparatus for a differential connector according to claim 2, further comprising a slide protrusion that is slidably fitted in a direction.

  As described above, according to the first aspect of the present invention, the other end of the first differential transmission path and the second differential transmission path (the end on the contact section side) is on the contact section side of the terminal used in the product. Connect the connector provided at one end of the coaxial cable to the first coaxial connector and the second coaxial connector, and connect the connector provided at the other end of the coaxial cable to the electrical characteristics of a spectrum analyzer, etc. If connected to the device for measurement, the twisted pair is not twisted back and connected to one end of the first differential transmission line and the second differential transmission line, and there is no effect of twisting back of the twisted pair. It is possible to accurately measure the electrical characteristics of only the contact portion between the terminals of the moving connector. Further, if the shapes of the first differential transmission path and the second differential transmission path are changed, the electrical characteristics of the contact portions of the terminals of various types of differential connectors can be measured.

  According to the second aspect of the present invention, the first substrate and the second substrate are overlapped so as to be orthogonal to each other, so that the end surface of the second substrate abuts against the surface of the first substrate, and the spring piece and the first differential Since the spring piece and the first differential transmission line are brought into contact with each other while the position with respect to the transmission line is fixed, it is possible to grasp the accurate contact load and accurately measure the relationship between the contact resistance and the high frequency. .

  According to the third aspect of the present invention, the slide convex portion provided in the other of the first guide portion and the second guide portion is inserted and slid into the slide groove provided in one of the first guide portion and the second guide portion. Thus, the first substrate and the second substrate can be easily stacked so as to be orthogonal to each other, and the state can be maintained.

It is a perspective view which shows one Embodiment of the contact part characteristic measuring device of the differential connector of this invention. It is a disassembled perspective view of the contact part characteristic measuring device of the differential connector shown in FIG. FIG. 3 is a view taken in the direction of arrow P2 in FIG. 2. It is a P1 arrow view of FIG. It is the elements on larger scale near the spring piece shown in FIG. It is the II sectional view taken on the line of FIG. It is explanatory drawing for demonstrating the measurement of the high frequency electrical property using the contact part property measuring device of the differential connector shown in FIG. (A) is a front view which shows an example of a male-type differential connector, (B) is the II-II sectional view taken on the line of (A). (A) is a front view which shows an example of a female-type differential connector, (B) is the III-III sectional view taken on the line of (A). FIG. 10 is a cross-sectional view when the differential connector shown in FIG. 8 and the differential connector shown in FIG. 9 are connected by a connector.

  Hereinafter, the contact part property measuring instrument of the differential connector of this invention is demonstrated based on FIGS. The differential connector contact measuring instrument 1 of the present invention (hereinafter simply referred to as the contact probe characteristic measuring instrument 1) comprises a pair of differential connectors 101 and 102 connected to each other as shown in FIG. It is a measuring instrument for measuring the high frequency electrical characteristic of the contact part of a pair of terminals 101b and 102b.

As shown in the figure, the contact part characteristic measuring instrument 1 includes a first substrate B ₁ having a pair of first differential transmission paths 2a and 2b on the surface, and a pair of second differential transmission paths 3a on the surface. , a second substrate B ₂ which 3b is provided, the first substrate B the pair of first differential transmission line 2a with attached to _1, 2b pair of first coaxial connector 4a which are respectively connected to one end of, and 4b A pair of second coaxial connectors 5a and 5b attached to the second substrate B ₂ and connected to one end of each of the pair of second differential transmission lines 3a and 3b, and a pair of second differential transmission lines 3a and 3b And a pair of spring pieces 6a and 6b respectively provided at the other end.

The first substrate B ₁ is provided in a home base type that is axisymmetric in plan view. The first substrate B ₁ of provided on the surface of the pair of first differential transmission line 2a, 2b are each provided in linear, the one end of the home base type in the first substrate B ₁ surface symmetry each provided a pair of edge portions forming the vertices located on the axis, the other end is provided on the first surface center of the substrate B _1. The other ends of the first differential transmission paths 2 a and 2 b are provided in the same shape (that is, the same width and the same thickness) with the same material as the contact portion of the terminal 101 b constituting the differential connector 101.

The second substrate B ₂ is provided in a line-symmetric home base type like the first substrate B ₁ . The second substrate B of the pair provided on the _second surface a second differential transmission lines 3a, 3b are each provided in linear, the one end of the home base type in the second substrate B ₂ surface symmetrical each provided a pair of edge portions forming the vertices located on the axis, the other end is provided on the edge perpendicular to the axis of symmetry at the second substrate B ₂ surface. The other ends of the second differential transmission paths 3 a and 3 b are provided with the same width and thickness as the same material as the contact portion side of the terminal 102 b constituting the differential connector 102. In other words, the other ends of the second differential transmission paths 3 a and 3 b are provided in substantially the same shape as the contact portions of the terminals 102 b constituting the differential connector 102.

  The first coaxial connectors 4a and 4b and the second coaxial connectors 5a and 5b are provided in a coaxial structure including an inner conductor, a cylindrical dielectric covering the inner conductor, and an outer conductor covering the dielectric. Yes. The first coaxial connectors 4a and 4b are respectively attached to the end faces on the edge side where one ends of the pair of first differential transmission paths 2a and 2b are provided, and the inner conductor thereof is the first differential transmission path 2a. 2b is overlapped and connected to one end of 2b. The second coaxial connectors 5a and 5b are respectively attached to end faces on the edge side where one ends of the pair of second differential transmission paths 3a and 3b are provided, and the inner conductor thereof is the second differential transmission path 3a. 3b are overlapped and connected on one end of 3b.

As shown in FIG. 5, one end of the spring piece 6 a is provided on the other end of the second differential transmission path 3 a, and the other end is 90 in a direction away from the surface of the second substrate B _2. It is bent at every degree. Thus, the other end of the spring piece 6a is bent in a direction perpendicular to the end face of the second edge of the substrate B ₂ of spring pieces 6a. Further, the spring piece 6b, after the one end is provided superimposed on the other end of the second differential transmission line 3b, the other end is bent 90 degrees in a direction away from the second surface of the substrate B ₂ Furthermore, it is folded back 180 degrees. Thus, the other end of the spring piece 6b is bent in a direction perpendicular to the end face of the second edge of the substrate B ₂ of spring pieces 6b is provided.

The first substrate B ₁ and the second substrate B ₂ described above are in contact with the other ends of the first differential transmission lines 2 a and 2 b in which the pair of spring pieces 6 a and 6 b are provided on the first substrate B _1. As shown, they are stacked perpendicular to each other. Specifically, the first substrate B ₁ is disposed in parallel with the horizontal direction, and the second substrate B ₂ is disposed in parallel with the vertical direction.

Further, the contact portion characteristic measuring instrument 1 is further disposed on both ends of the pair of spring pieces 6a and 6b of the first substrate B ₁ in the arrangement direction, and the second substrate B ₂ rather than the surface of the first substrate B _1. the first pair of resin attached to the substrate B ₁ first guide portion 7a disposed on the side, 7b, a pair of first guide portions 7a, a pair attached to the second substrate B ₂ sandwiched 7b 2nd guide part 8a, 8b. The pair of first guide portions 7a, 7b is fixed at the mounting portion 9 attached to the first substrate B _1, it is thereby attached to the first substrate B _1.

Mounting portion 9 includes a bottom wall portion 9a provided in the first back side of the substrate B _1, first substrate B ₁ spring pieces 6a erected from the bottom wall 9a, the both end faces of the arrangement direction of 6b It includes a pair of vertical wall portions 9b, and a pair of convex portions 9c which first sandwiching the substrate B ₁ between the bottom wall portion 9a protruding from the pair of vertical wall portions 9b sandwiching. The pair of guide portions 7a and 7b are provided so as to protrude from the pair of standing wall portions 9b. The pair of guide portions 7a, each to 7b, the slide groove 10 is provided extending in the first direction perpendicular to the substrate B ₁ parallel direction and the second substrate B _2.

Further, the pair of second guide portions 8a, 8b are spring pieces 6a, are disposed separated from each other in the direction of arrangement of 6b, fixed to the rear surface of the second flat plate portion 11 which is adhered to the back surface of the substrate B ₂ Yes. When Thus the flat plate portion 11 is bonded to the second substrate B ₂ second guide portion 8a, 8b is attached to the second substrate B _2. The pair of second guide portions 8a and 8b is provided with a slide convex portion 12 that fits in the slide groove 10 so as to be slidable in the extending direction. The ends of the pair of second guide portions 8 a and 8 b are connected by a connecting portion 13.

Next, a procedure for assembling the second substrate B ₂ to the first substrate B ₁ of the contact part property measuring instrument 1 having the above-described configuration will be described. According to the configuration described above, the slide convex portion 12 is inserted and fitted from the opening on the second substrate B ₂ side of the slide groove 10. Fitted when the second substrate B ₂ of the spring piece 6a, the end face of 6b are provided side is superposed on the first surface of the substrate B _1, first substrate B ₁ and the second substrate B ₂ are perpendicular to each other Are overlaid. Thereafter, the first substrate B ₁ of the surface to a second spring piece 6a in a state in which overlapping the end faces of the substrate B ₂ along the slide groove 10, 6b are in contact with the other end of the first differential transmission line 2a, 2b The first substrate B ₁ and the second substrate B ₂ can be assembled by sliding the second substrate B ₂ to the position.

  Next, an example of the measurement of the high frequency characteristic using the contact part characteristic measuring instrument 1 mentioned above is demonstrated with reference to FIG. As shown in the figure, the contact portion property measuring instrument 1 and the spectrum analyzer 14 are connected. Specifically, the connectors attached to one ends of the measurement cables 15a and 15b, which are a pair of coaxial cables, are connected to the pair of first coaxial connectors 4a and 4b of the contact portion characteristic measuring instrument 1, respectively, A connector attached to the other end of the measurement cables 15 a and 15 b is connected to the spectrum analyzer 14. The connectors attached to one end of the pair of measurement cables 16a and 16b are connected to the pair of second coaxial connectors 5a and 5b of the contact portion characteristic measuring instrument 1, respectively, and the measurement cable 16a which is a pair of coaxial cables. The connector attached to the other end of 16b is connected to the spectrum analyzer 14. A frequency analysis result of the spectrum analyzer 14 is used to measure high frequency characteristics using a personal computer (PC) 17.

  According to the contact part property measuring instrument 1 described above, the other ends (ends on the contact part side) of the first differential transmission lines 2a and 2b and the second differential transmission lines 3a and 3b are in contact with terminals used in the product. A connector provided at one end of the coaxial cable is connected to the first coaxial connectors 4a, 4b and the second coaxial connectors 5a, 5b, and is provided at the other end of the coaxial cable. If the connector is connected to a device for measuring electrical characteristics such as a spectrum analyzer, the twisted pair is twisted back so that it is not connected to one end of the first differential transmission path 2a, 2b and the second differential transmission path 3a, 3b. Therefore, it is possible to accurately measure the electrical characteristics of only the contact portion between the terminals of the differential connector which is not affected by the twisted-back twisting. Further, if the shapes of the first differential transmission lines 2a and 2b and the second differential transmission lines 3a and 3b are changed, the electrical characteristics of the contact portions of the terminals of various types of differential connectors can be measured.

Further, according to the contact part property measuring instrument 1 described above, the first substrate B ₁ and the second substrate B ₂ are stacked so as to be orthogonal to each other, whereby the second substrate B ₂ is formed on the surface of the first substrate B ₁ . Since the spring pieces 6a, 6b and the first differential transmission paths 2a, 2b are brought into contact with each other while the end faces are abutted and the positions of the spring pieces 6a, 6b and the first differential transmission paths 2a, 2b are fixed, It is possible to accurately grasp the contact load and accurately measure the relationship between the contact resistance and the high frequency.

Moreover, according to the contact part characteristic measuring instrument 1 mentioned above, by inserting and sliding the slide convex part 12 provided in the 2nd guide part 8a, 8b in the slide groove 10 provided in the 1st guide part 7a, 7b. The first substrate B ₁ and the second substrate B ₂ can be easily stacked so as to be orthogonal to each other, and the state can be maintained.

Note that, according to the above-described embodiment, the first substrate B ₁ and the second substrate B ₂ are stacked perpendicular to each other in order to accurately grasp the contact load, but the present invention is not limited to this. Absent. For example, if it is not necessary to accurately grasp the contact load, for example, the first substrate B ₁ and the second substrate B ₂ may be stacked in parallel with each other.

  Further, according to the above-described embodiment, the slide groove 10 is provided in the first guide portions 7a and 7b and the slide groove 10 is provided in the second guide portions 8a and 8b. However, the present invention is not limited to this. Absent. For example, the slide groove 10 may be provided in the second guide portions 8a and 8b, and the slide convex portion 12 may be provided in the first guide portions 7a and 7b.

  Moreover, according to embodiment mentioned above, 2nd guide part 8a, 8b was spaced apart and one pair was provided, but this invention is not limited to this. The 2nd guide parts 8a and 8b should just be pinched | interposed into the 1st guide parts 7a and 7b, and may be one.

  Further, the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. That is, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Contact part characteristic measuring device 2a, 2b 1st differential transmission path 3a, 3b 2nd differential transmission path 4a, 4b 1st coaxial connector 5a, 5b 2nd coaxial connector 6a, 6b Spring piece 7a, 7b 1st guide part 8a, 8b 2nd guide part 10 Slide groove 12 Slide convex part B ₁ 1st board | substrate B ₂ 2nd board | substrate

Claims (3)

A contact characteristic measurement device for a differential connector for measuring electrical characteristics of a contact portion between terminals constituting a pair of differential connectors connected to each other,
A first substrate having a pair of first differential transmission lines provided on the surface;
A second substrate having a pair of second differential transmission lines provided on the surface;
A pair of first coaxial connectors attached to the first substrate and connected to one end of the pair of first differential transmission lines;
A pair of second coaxial connectors attached to the second substrate and respectively connected to one ends of the pair of second differential transmission lines;
A pair of spring pieces respectively provided at the other ends of the pair of second differential transmission lines,
The first substrate and the second substrate are overlapped so that the pair of spring pieces are in contact with the other ends of the pair of first differential transmission lines provided on the first substrate, respectively. The contact part characteristic measuring instrument of the differential connector. Each of the pair of spring pieces is provided at an edge portion of the second substrate and is provided so as to bend in a direction orthogonal to an end surface on the provided edge portion side,
The contact portion characteristic measuring instrument for a differential connector according to claim 1, wherein the first substrate and the second substrate are stacked so as to be orthogonal to each other. A pair of first elements disposed on both ends of the first substrate in the arrangement direction of the pair of spring pieces and attached to the first substrate disposed on the second substrate side relative to the surface of the first substrate. A guide part;
A second guide part attached to the second substrate sandwiched between the pair of first guide parts;
One of the first guide part and the second guide part is provided with a slide groove extending in a direction parallel to the first substrate and perpendicular to the second substrate,
The slide convex part which fits the slide groove so that it can slide in the extension direction is provided in the other of the 1st guide part and the 2nd guide part. Measuring device for contact characteristics of differential connectors.

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