Electrical connection jig and electronic circuit board inspection device

Abstract

This invention provides an electrical connection jig that can electrically connect multiple terminals on a miniaturized circuit board connector mounted on an electronic circuit board to a measuring instrument. [Solution] The electrical connection jig includes a first connector 31 having multiple terminals that are electrically connected to each of the multiple terminals of a board connector 11 mounted on an electronic board 1, a measuring instrument 4 that measures at least the current flow between the multiple terminals of the board connector 11 and the electronic board 1, and an intermediate board 32 having a circuit that electrically connects the multiple terminals of the first connector 31. The first connector 31 is mounted on the intermediate board 32.

Description

Technical Field

[0001] The present invention relates to an electrical connection jig for electrically connecting an electronic substrate and a measuring instrument, and an electronic substrate inspection apparatus for inspecting the electrical characteristics of an electronic substrate using the electrical connection jig.

Background Art

[0002] There is disclosed a substrate inspection apparatus that inspects an electronic substrate by bringing a plurality of inspection probes into contact with a plurality of contacts of the electronic substrate (for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Some electronic substrates are equipped with connectors for connecting external power and signals. Inspection of this type of electronic substrate requires confirmation not only of the electronic substrate but also of the energization of the connector (hereinafter sometimes referred to as a "substrate connector"). Conventionally, when inspecting an electronic substrate having a substrate connector with a measuring instrument, an electrical connection jig having a plurality of inspection probes may be used to connect a plurality of terminals of the substrate connector to the measuring instrument, and the electronic substrate is inspected by bringing each of the inspection probes into contact with the terminals of the substrate connector.

[0005] However, in order to bring a plurality of inspection probes into contact with a plurality of terminals provided in the substrate connector, this electrical connection jig must accurately fix the plurality of inspection probes at positions facing the plurality of terminals on the substrate connector side.

[0006] Furthermore, this electrical connection jig must be securely electrically connected to each of the multiple test probes, which are fixed in positions opposite to the multiple terminals on the circuit board connector, by soldering or other means.

[0007] Therefore, creating an electrical connection jig that brings multiple test probes into contact with multiple terminals on a circuit board connector requires high-precision manufacturing technology and significant production costs.

[0008] Furthermore, in recent years, with the increasing integration and miniaturization of electronic circuit boards, circuit board connectors have also become smaller, and the distance between the multiple terminals on these miniaturized connectors is now narrower than the diameter of the cylindrical part of commercially available inspection probes. Therefore, in order to manufacture an electrical connection jig that can bring multiple inspection probes into contact with the multiple terminals on a miniaturized circuit board connector, high-precision manufacturing technology and significant production costs are required.

[0009] The objective of the present invention is to provide an electrical connection jig for electrically connecting multiple terminals on a circuit board connector mounted on an electronic circuit board to a measuring instrument, using simple manufacturing technology and at low cost. [Means for solving the problem]

[0010] The present invention includes several means for solving the above problems, but one example is a first connector having a plurality of terminals that are electrically connected to each of a plurality of terminals of a board connector mounted on an electronic board, a measuring instrument that measures the current flow between the plurality of terminals of the board connector and the electronic board, and an intermediate board having a circuit that electrically connects the plurality of terminals of the first connector, wherein the first connector is mounted on the intermediate board. [Effects of the Invention]

[0011] According to the present invention, by simply mounting the first connector on an intermediate substrate, the multiple terminals of a substrate connector mounted on an electronic substrate can be electrically connected to a measuring instrument, thus enabling the manufacture of an electrical connection jig with simple manufacturing technology and low cost. Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments. [Brief explanation of the drawing]

[0012] [Figure 1] This diagram shows a cross-sectional view of the electronic circuit board fixing jig, the electrical connection jig, and the measuring instrument, respectively, of an electronic circuit board inspection apparatus according to the first embodiment of the present invention. [Figure 2] This is a perspective view of the electrical connection jig according to the first embodiment of the present invention, viewed from the front right and slightly above. [Figure 3] This is a perspective view of the electrical connection jig according to the first embodiment of the present invention, viewed from the rear right and slightly below. [Figure 4] This is a perspective view of the electrical connection jig according to the first embodiment of the present invention, viewed from the rear left diagonally downwards. [Figure 5] This is a bottom view of an intermediate substrate fixed to the upper plate of the upper housing by a fixing device, according to the first embodiment of the present invention. [Figure 6] This is a cross-sectional view perpendicular to the X-axis of a first connector mounted on an intermediate substrate of an electrical connection jig according to a second embodiment of the present invention, showing a state in which the mating axis of the mating portion of the first connector is located on the central axis of the first connector. [Figure 7] This is a cross-sectional view perpendicular to the X-axis of a first connector mounted on an intermediate substrate of an electrical connection jig according to a second embodiment of the present invention, showing a state in which the mating axis of the mating portion of the first connector has moved in the -Z direction from the central axis of the first connector. [Modes for carrying out the invention]

[0013] Hereinafter, with reference to the drawings, the configurations and operations of the electronic substrate inspection apparatus and the electrical connection jig according to the first and second embodiments of the present invention will be described. In each figure, the same reference numerals denote the same parts. Also, in the plan view and the cross-sectional view, the directions are specified by the XYZ axes orthogonal to each other, and +X is defined as "right", -X as "left", +Y as "up", -Y as "down", +Z as "front", and -Z as "rear".

[0014] (First Embodiment) FIG. 1 is a cross-sectional schematic view schematically showing an electronic substrate fixing jig, an electrical connection jig, and a measuring instrument provided in the electronic substrate inspection apparatus according to the first embodiment of the present invention, with the cross-section of the electronic substrate fixing jig and the electrical connection jig and a schematic view of the measuring instrument.

[0015] The electronic substrate inspection apparatus 100 according to the present embodiment is an apparatus for inspecting the electrical characteristics of an electronic substrate 1 on which a board connector 11 is mounted, and includes an electronic substrate fixing jig 2, an electrical connection jig 3, and a measuring instrument 4.

[0016] The electronic substrate 1 is an electronic control device on which electronic components (such as ICs, resistors, capacitors, etc.) are mounted and electronically controls the operation of a system or device, and is, for example, an ECU (Electronic Control Unit).

[0017] On the electronic substrate 1, a board connector 11 is mounted (for example, through-hole mounting or surface mounting). As a result, the board connector 11 is physically attached to the electronic substrate 1, and the board connector 11 is electrically connected to the circuit of the electronic substrate 1.

[0018] The board connector 11 is a component for transmitting and receiving signals and power to and from other devices and systems.

[0019] The board connector 11 of the present embodiment is preferably a board-to-board connector. Further, the board connector 11 is preferably a vertical connection type board-to-board connector. In the present embodiment, a vertical connection type board-to-board female connector is used for the board connector 11.

[0020] The electronic substrate fixing jig 2 is a jig for placing the electronic substrate 1 at a predetermined position and inserting a first connector 31 mounted on an electrical connection jig 3 described later into a board connector 11 mounted on the electronic substrate 1.

[0021] The electronic substrate fixing jig 2 is provided with a base plate 21, an upper plate 22, and a plurality of support columns 23.

[0022] The base plate 21 is a plate-like member on which the electronic substrate 1 is placed, and a guide strip 21a for positioning the electronic substrate 1 is provided on the upper surface.

[0023] The upper plate 22 is located above the electronic substrate 1 placed on the base plate 21 and is a plate-like member that covers the electronic substrate 1 placed on the base plate 21.

[0024] The upper plate 22 is provided with an opening 22a for inserting the fitting portion 31a of the first connector 31 of the electrical connection jig 3 into the board connector 11, and a guide strip 22b for guiding the vertical movement of the electrical connection jig 3.

[0025] The plurality of support columns 23 are members for supporting the upper plate 22 above the base plate 21. The plurality of support columns 23 are fixed to the base plate 21 and the upper plate 22 by screwing, welding, etc. Thereby, the base plate 21 and the upper plate 22 are integrated via the plurality of support columns 23.

[0026] The electrical connection jig 3 is a jig for electrically connecting the terminals of the board connector 11 mounted on the electronic substrate 1 and the measuring instrument 4, and includes a first connector 31 and an intermediate board 32.

[0027] The first connector 31 is a connector having a plurality of first terminals electrically connected to each of the plurality of terminals of the board connector 11 mounted on the electronic substrate 1.

[0028] The first connector 31 is preferably detachably fitted to the board connector 11 mounted on the electronic substrate 1.

[0029] Furthermore, the first connector 31 is preferably a board-to-board connector. Moreover, the first connector 31 is preferably a vertical connection type board-to-board connector. In this embodiment, the first connector 31 is a vertical connection type board-to-board male connector.

[0030] The intermediate board 32 is a printed circuit board having a circuit that electrically connects the multiple terminals of the first connector 31 to the measuring instrument 4. The first connector 31 is mounted on the intermediate board 32 (for example, by through-hole mounting or surface mounting). As a result, the first connector 31 is physically attached to the intermediate board 32 and electrically connected to the circuit of the intermediate board 32.

[0031] Furthermore, it is preferable that the intermediate substrate 32 is equipped with a second connector 36, which is detachably fitted to a measuring instrument-side connector (not shown) provided at the end of a wire 41 electrically connected to the terminals of the measuring instrument 4, and electrically connects a plurality of terminals of the measuring instrument-side connector to a circuit provided on the intermediate substrate 32 (for example, through-hole mounting or surface mounting).

[0032] Furthermore, it is preferable that the electrical connection jig 3 further comprises a housing 33, a handle 34, and a plurality of fasteners 35.

[0033] Figure 2 is a perspective view of the electrical connection jig 3 according to this embodiment, viewed from the front right diagonally above. Figure 3 is a perspective view of the electrical connection jig 3 according to this embodiment, viewed from the rear right diagonally below. Figure 4 is a perspective view of the electrical connection jig 3 according to this embodiment, viewed from the rear left diagonally below.

[0034] The housing 33 is a box-shaped unit that covers the electronic circuit board 1, and preferably has an upper housing 331 and a lower housing 332.

[0035] The upper housing 331 is a box-shaped component that covers the electronic circuit board 1 from above, and preferably has an upper plate 331a that forms the top surface of the housing 33, a right plate 331b that forms the right side of the housing 33 (see Figure 2), and a left plate 331c that forms the left side of the housing 33 (see Figure 4). Preferably the upper plate 331a, the right plate 331b, and the left plate 331c are formed integrally.

[0036] Preferably, a handle 34, described later, is fixed to a predetermined position on the surface of the upper plate 331a of the upper housing 331 by tightening a screw 34a inserted from the back side of the upper plate 331a into a through hole 331d (see Figure 1) provided in the upper plate 331a.

[0037] Furthermore, the heads of the upper screws 35b of the multiple fasteners 35, which will be described later, may protrude from the surface of the upper plate 331a.

[0038] The lower housing 332 is a box-shaped component that covers the electronic circuit board 1 from below, and preferably has a bottom plate 332a that forms the bottom surface of the housing 33, a front plate 332b that forms the front surface of the housing 33, and a back plate 332c that forms the back surface of the housing 33.

[0039] Furthermore, it is preferable that the lower housing 332 is provided with a right-side plate 332d (see Figure 4) that connects the right ends of the bottom plate 332a, front plate 332b, and back plate 332c, and a left-side plate 332e (see Figure 3) that connects the left ends of the bottom plate 332a, front plate 332b, and back plate 332c.

[0040] It is preferable that the bottom side plate 332a, front side plate 332b, back side plate 332c, right side plate 332d, and left side plate 332e are formed integrally.

[0041] Preferably, the right side panel 332d is located inside the right side panel 331b of the upper housing 331, and the left side panel 332e is located inside the left side panel 331c of the upper housing 331.

[0042] Preferably, the right side plate 331b of the upper housing 331 and the right side plate 332d of the lower housing 332, and the left side plate 331c of the upper housing 331 and the left side plate 332e of the lower housing 332 overlap and press against each other, thereby joining the lower housing 332 and the upper housing 331 to form housing 33.

[0043] Preferably, the bottom plate 332a of the lower housing 332 is provided with an opening 332f to allow the mating portion 31a, which mates with the board connector 11 of the first connector 31 mounted on the intermediate board 32, to protrude outwards from the housing 33.

[0044] Furthermore, it is preferable that the back plate 332c of the lower housing 332 is provided with an opening 332g for attaching the measuring instrument side connector to the second connector 36 mounted on the intermediate circuit board 32.

[0045] The handle 34 is a component used by an operator to apply force to the electrical connection jig 3 to insert the mating portion 31a of the first connector 31, which protrudes from the opening 332f of the housing 33, into the board connector 11 mounted on the electronic board 1, which is placed on the base plate 21 of the electronic board fixing jig 2.

[0046] As described above, the handle 34 is fixed to a predetermined position on the surface of the upper plate 331a of the upper housing 331, and this predetermined position is preferably on the opposite side of the opening 332f of the housing 33.

[0047] In this embodiment, a cylindrical handle 34 is shown with its lower end fixed to the surface of the upper plate 331a of the upper housing 331. However, it is not limited to this, and for example, an inverted U-shaped handle may be used with two lower ends fixed to the surface of the upper plate 331a of the upper housing 331.

[0048] The multiple fasteners 35 are units for fixing the intermediate board 32 inside the housing 33, and preferably include, for example, a spacer 35a, an upper screw 35b, and a lower screw 35c.

[0049] The spacer 35a is a component that maintains a predetermined distance between the upper plate 331a of the upper housing 331 and the intermediate substrate 32. In this embodiment, the spacer 35a is a rigid cylindrical member with screw holes on its top and bottom surfaces.

[0050] The upper screw 35b is inserted into one of the multiple through holes provided in the upper plate 331a of the upper housing 331 and screwed into a screw hole provided on the upper surface of the spacer 35a. As a result, the upper surface of the spacer 35a is in close contact with the lower surface of the upper plate 331a of the upper housing 331, and the spacer 35a is fixed to the upper housing 331.

[0051] The lower screw 35c is inserted into one of the multiple through holes provided in the intermediate substrate 32 and screwed into a screw hole provided on the bottom surface of the spacer 35a.

[0052] As a result, the intermediate board 32 is fixed to the bottom surface of the spacer 35a, which is fixed to the upper housing 331 by the upper screw 35b, by the lower screw 35c. Therefore, the intermediate board 32 is fixed at a position that is the length of the spacer 35a away from the bottom surface of the upper plate 331a of the upper housing 331.

[0053] Figure 5 is a bottom view of the intermediate substrate 32 of the electrical connection jig 3 according to this embodiment, which is fixed to the upper plate 331a of the upper housing 331 by a fixing device 35.

[0054] The first connector 31 is preferably rectangular in shape, with a long side and a short side on the side facing the intermediate substrate 32, and is fixed to the intermediate substrate 32 by soldering a plurality of first terminals 31b provided on the long side of the first connector 31 to the intermediate substrate 32, as shown in Figure 5.

[0055] Furthermore, as shown in Figure 5, it is preferable that the multiple fasteners 35 include at least two fasteners 35 that sandwich the first connector 31 in a direction along the long side of the first connector 31.

[0056] The measuring instrument 4 is a device that measures at least the current flow between the multiple terminals of the board connector 11 and the electronic circuit board 1. Specifically, the measuring instrument 4 is preferably an oscilloscope, for example, that can measure the electrical characteristics of the electronic circuit board 1.

[0057] Next, the process of inspecting the electrical characteristics of the electronic circuit board 1 on which the circuit board connector 11 is mounted using the electronic circuit board inspection apparatus 100 according to this embodiment is described below.

[0058] First, the worker positions the electronic circuit board 1, on which the circuit board connector 11 is mounted, in a predetermined position by bringing its end into contact with the guide strip 21a of the base plate 21 of the electronic circuit board fixing jig 2.

[0059] Next, the worker grasps the handle 34 of the electrical connection jig 3, which has the measuring instrument 4 side connector mated with the second connector 36, and positions the electrical connection jig 3 above the upper plate 22 of the electronic circuit board fixing jig 2 such that the handle 34 is positioned above the opening 22a of the upper plate 22 of the electronic circuit board fixing jig 2.

[0060] Next, the worker brings the housing 33 of the electrical connection jig 3 into contact with the guide strip 22b of the upper plate 22 of the electronic circuit board fixing jig 2, pushes the electrical connection jig 3 down along the side of the guide strip 22b, and fits the mating portion 31a of the first connector 31 into the circuit board connector 11, thereby electrically connecting the electronic circuit board 1 and the measuring instrument 4.

[0061] Next, the worker operates the measuring instrument 4 to inspect the electrical characteristics of the electronic circuit board 1.

[0062] After the inspection is complete, the worker removes the mating portion 31a of the first connector 31 from the circuit board connector 11, moves the electrical connection jig 3 from above the upper plate 22 of the electronic circuit board fixing jig 2, and places the electrical connection jig 3 in the designated location.

[0063] Next, the worker removes the electronic circuit board 1 from the base plate 21 of the electronic circuit board fixing jig 2, completing the electrical characteristics inspection process for one of the electronic circuit boards 1 on which the circuit board connector 11 is mounted.

[0064] When inspecting multiple electronic circuit boards 1 on which the circuit board connector 11 is mounted, the worker repeats the above inspection process.

[0065] [effect] The electrical connection jig 3 of this embodiment includes a first connector 31 having a plurality of terminals that are electrically connected to each of the plurality of terminals of a board connector 11 mounted on an electronic board 1, and an intermediate board 32 having a measuring instrument 4 that measures the current flow between the plurality of terminals of the board connector 11 and the electronic board 1, and a circuit that electrically connects the plurality of terminals of the first connector 31, with the first connector 31 mounted on the intermediate board 32.

[0066] As a result, the electrical connection jig 3 can electrically connect the multiple terminals of the board connector 11 mounted on the electronic board 1 to the measuring instrument 4 simply by mounting the first connector 31 on the intermediate board 32, thus enabling simple manufacturing technology and low cost.

[0067] Incidentally, the first connector 31 is used to connect two circuit boards, and it is preferable to use a commercially available board-to-board connector. However, this type of connector is used exclusively for connecting circuits and is rarely disconnected once mated, and is not intended for repeated mating in a short period of time, so there are challenges in terms of durability and maintaining measurement accuracy. In other words, when the first connector 31 is repeatedly mated and disconnected for the inspection of a large number of electronic circuit boards 1 by the measuring instrument 4, as in this embodiment, there is a concern that the measurement accuracy will decrease due to wear of the terminals of the first connector 31 and the formation of an oxide film.

[0068] Therefore, in this embodiment, the problem is solved by periodically replacing the first connector 31 along with the intermediate board 32 during the inspection of a large number of electronic boards 1 by the measuring instrument 4. In other words, this is one of the major advantages of mounting the first connector 31 on the intermediate board 32.

[0069] Furthermore, since both the connector used as the first connector 31 and the electronic circuit board used as the intermediate board 32 are inexpensive components that can be easily mass-produced, replacement costs can be kept relatively low. The benefits obtained from inspecting the electronic circuit board 1 (for example, the ease of connecting the electronic circuit board 1 and the measuring instrument 4, and the low dependence of the electronic circuit board 1 on the shape of the board connector 11) outweigh these replacement costs.

[0070] Furthermore, the electrical connection jig 3 of this embodiment preferably comprises a housing 33 having an opening 332f that fixes an intermediate substrate 32 inside and allows a mating portion 31a of the first connector 31 that engages with the substrate connector 11 to protrude outward, and a handle 34 fixed to the housing 33 so as to be located on the opposite side of the opening 332f.

[0071] Since the handle 34 is fixed to the opposite side of the opening 332g of the housing 33 from which the first connector 31 protrudes, it is possible to suppress the generation of eccentric force on the first connector 31 when applying force to mat the first connector 31 with the board connector 11. As a result, it is possible to suppress edge wear on the terminals of the first connector 31 and poor mating between the first connector 31 and the board connector 11.

[0072] Furthermore, in the electrical connection jig 3 of this embodiment, the first connector 31 is rectangular with a long side and a short side on the side facing the intermediate substrate 32, and is fixed to the intermediate substrate 32 by soldering a plurality of first terminals 31b provided on the long side of the first connector 31 to the intermediate substrate 32, and the intermediate substrate 32 is fixed inside the housing 33 by a plurality of fasteners 35, and it is preferable that the plurality of fasteners 35 include at least two fasteners 35 that sandwich the first connector 31 in the direction along the long side of the first connector 31.

[0073] Therefore, the first connector 31 has multiple first terminals 31b provided on its long side that are fixed to the intermediate board 32 by solder, and the intermediate board 32 is fixed to the housing 33 by two fasteners 35 that sandwich the first connector 31 from at least a direction along the long side of the first connector 31.

[0074] This prevents twisting or warping of the intermediate substrate 32 due to the reaction force applied from the substrate connector 11 to the first connector 31 when the first connector 31 is mated to the substrate connector 11. Therefore, it is possible to prevent the first connector 31 from tilting due to twisting or warping of the intermediate substrate 32, which would prevent the mating portion 31a of the first connector 31 from being inserted into the substrate connector 11, and also to suppress wear on the edges of the multiple terminals of the first connector 31, thereby improving the durability of the electrical connection jig 3.

[0075] Furthermore, it is preferable that the intermediate board 32 of the electrical connection jig 3 in this embodiment is equipped with a second connector 36 that electrically connects the circuit on the intermediate board 32 to the measuring instrument 4. This allows the electrical connection jig 3 to easily and quickly connect to the measuring instrument 4 by fitting the connector on the measuring instrument side to the second connector 36, thereby reducing working time.

[0076] Furthermore, it is preferable that the first connector 31 of the electrical connection jig 3 in this embodiment is detachably fitted to the board connector 11. This reduces the time required for electrical connection and disconnection between the board connector 11 and the first connector 31. Furthermore, the first connector 31 of the electrical connection jig 3 in this embodiment is preferably a board-to-board connector. This allows the electrical connection jig 3 to easily and securely mount the first connector 31 to the intermediate board 32, thereby improving work efficiency.

[0077] Furthermore, the first connector 31 of the electrical connection jig 3 in this embodiment is preferably a vertical connection type board-to-board connector. This allows electrical connection and disconnection between the board connector 11 and the first connector 31 to be performed by moving the electrical connection jig 3 up and down, further improving work efficiency.

[0078] (Second Embodiment) Figure 6 is a cross-sectional view perpendicular to the X-axis of the first connector 231 mounted on the intermediate substrate 32 of the electrical connection jig according to the second embodiment of the present invention, showing a state in which the mating axis 231h of the mating portion 231a of the first connector 231 is located at the central axis 231n of the first connector 231. Figure 7 is a cross-sectional view perpendicular to the X-axis of the first connector 231 mounted on the intermediate substrate 32 of the electrical connection jig according to the second embodiment of the present invention, showing a state in which the mating axis 231h of the mating portion 231a of the first connector 231 has moved in the -Z direction from the central axis 231n of the first connector 231.

[0079] The first connector 231 mounted on the intermediate board 32 of the electrical connection jig according to this embodiment differs from the first connector 31 mounted on the intermediate board 32 of the electrical connection jig 3 according to the first embodiment in the following ways.

[0080] The first connector 231 mounted on the intermediate substrate 32 of the electrical connection jig according to this embodiment has a floating structure that can move along the plane of the intermediate substrate 32. In contrast, the first connector 31 mounted on the intermediate substrate 32 of the electrical connection jig 3 according to the first embodiment does not have a floating structure that can move along the plane of the intermediate substrate 32.

[0081] Specifically, the first connector 231 of the electrical connection jig according to this embodiment includes an electrical connection portion 231d that electrically connects to the terminals of the board connector 11, a mounting portion 231e mounted on the intermediate board 32 (for example, through-hole mounting or surface mounting), and a first terminal 231b having a connecting portion 231f that connects the electrical connection portion 231d and the mounting portion 231e.

[0082] The first connector 231 has a mating portion 231a that fixes the electrical connection portion 231d of the first terminal 231b and mates with the board connector 11.

[0083] Furthermore, the first connector 231 includes a fixing portion 231c which is fixed to the intermediate substrate 32 by coupling with the mounting portion 231e of the first terminal 231b.

[0084] Furthermore, the connecting portion 231f of the first terminal 231b is provided with a floating structure 231g that allows the mating portion 231a to float relative to the fixed portion 231c. The floating structure 231g allows the mating shaft 231h of the mating portion 231a to move along the plane of the intermediate substrate 32. The details of the floating structure 231g are described below.

[0085] As shown in Figure 6, the first connector 231 is formed symmetrically with respect to the mating axis 231h of the mating portion 231a of the first connector 231 with respect to the mating axis 231h of the board connector 11, and includes a connecting portion 231f that is symmetrical with respect to the mating axis 231h.

[0086] The connecting portion 231f, which is symmetrical with respect to the mating shaft 231h, comprises an upper side 231i extending from the intermediate substrate 32 side end of the electrical connection portion 231d along the plane of the intermediate substrate 32 toward the fixing portion 231c side, a lower side 231j extending from the opposite end of the intermediate substrate 32 of the mounting portion 231e along the plane of the intermediate substrate 32 toward the mating portion 231a side, and a connecting side 231k extending along the mating shaft 231h and connecting the fixing portion 231c side end of the upper side 231i and the mating portion 231a side end of the lower side 231j.

[0087] As a result, the connecting portion 231f has an intersection point 231l between the upper side 231i and the connecting side 231k, and an intersection point 231m between the bottom side 231j and the connecting side 231k.

[0088] Then, the intersection point 231l between the upper edge 231i and the connecting edge 231k, and the intersection point 231m between the lower edge 231j and the connecting edge 231k, form the pivot points of the hinge due to the elasticity of the first terminal 231b. As a result, the mating portion 231a floats relative to the fixed portion 231c, as shown in Figure 7.

[0089] Furthermore, the first connector 231 of this embodiment is fixed to the intermediate substrate 32 because its bottom edge 231j is coupled to the mounting portion 231e mounted on the intermediate substrate 32. Also, its top edge 231i is fixed to the mating portion 231a because it is coupled to the electrical connection portion 231d fixed to the mating portion 231a.

[0090] Therefore, in this embodiment, as shown in Figure 7, the connecting edge 231k of the connecting portion 231f is inclined, and the mating shaft 231h moves along the plane of the intermediate substrate 32 away from the central axis 231n of the first connector 231.

[0091] In other words, the floating structure 231g provided in the connecting portion 231f of this embodiment is a hinge function provided at the intersection 231l between the upper side 231i and the connecting side 231k, and at the intersection 231m between the bottom side 231j and the connecting side 231k.

[0092] [effect] The first connector 231 of the electrical connection jig in this embodiment has a floating structure that can move along the plane of the intermediate substrate 32.

[0093] As a result, even if the mating shaft 231h of the first connector 231 is misaligned with the mating shaft of the board connector 11, the mating portion 231a of the first connector 231 will be inserted in accordance with the mating portion of the board connector 11. Therefore, when force is applied to mat the first connector 231 with the board connector 11, it is possible to suppress the generation of eccentric force on the first connector 231, thereby preventing edge wear on the multiple terminals of the first connector 231 and suppressing poor mating between the first connector 231 and the board connector 11.

[0094] It should be noted that the present invention is not limited to the embodiments described above, and various modifications are included. For example, the embodiments described above are described in detail to make the present invention easier to understand, and are not necessarily limited to those having all the configurations described. Furthermore, it is possible to replace parts of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add configurations from other embodiments to the configuration of one embodiment. In addition, it is possible to add, delete, or replace parts of the configuration of each embodiment with other configurations. [Explanation of symbols]

[0095] 1…Electronic circuit board, 2…Electronic circuit board fixing jig, 3…Electrical connection jig, 11…Circuit board connector, 31,231…First connector, 31a,231a…Mating part, 31b,231b…First terminal, 32…Intermediate circuit board, 33…Housing, 34…Handle, 4…Measuring instrument, 100…Electronic circuit board inspection device, 231c…Fixing part, 231d…Electrical connection part, 231e…Mounting part, 231f…Connecting part, 231g…Floating structure, 231h…Mating shaft, 332f…Opening

Claims

1. A first connector having multiple terminals that are electrically connected to each of the multiple terminals of a board connector mounted on an electronic circuit board, The system comprises a measuring instrument that measures at least the current flow between a plurality of terminals of the board connector and the electronic board, and an intermediate board having a circuit that electrically connects the plurality of terminals of the first connector, An electrical connection jig characterized in that the first connector is mounted on the intermediate substrate.

2. An electrical connection jig according to claim 1, A housing having an opening that fixes the intermediate substrate internally and allows the mating portion of the first connector that engages with the substrate connector to protrude outward, An electrical connection jig characterized by comprising a handle fixed to the housing so as to be located on the opposite side of the opening.

3. An electrical connection jig according to claim 1, The first connector is an electrical connection jig characterized by having a floating structure that is movable along the plane of the intermediate substrate.

4. An electrical connection jig according to claim 2, The first connector is rectangular in shape, with a long side and a short side on the side facing the intermediate substrate, and is fixed to the intermediate substrate by soldering a plurality of terminals provided on the long side of the first connector to the intermediate substrate. The intermediate substrate is fixed inside the housing by a plurality of fasteners. The plurality of fasteners are characterized in that at least two fasteners sandwich the first connector in a direction along the long side of the first connector.

5. An electrical connection jig according to claim 1, An electrical connection jig characterized in that a second connector is mounted on the intermediate substrate for electrically connecting the circuit of the intermediate substrate and the measuring instrument.

6. An electrical connection jig according to claim 1, The first connector is characterized by being detachably fitted to the board connector, making it an electrical connection jig.

7. An electrical connection jig according to claim 1, The first connector is a board-to-board connector, making it an electrical connection jig.

8. An electrical connection jig according to claim 1, The first connector is a vertical connection type board-to-board connector, making it an electrical connection jig.

9. An electronic circuit board inspection apparatus characterized by using the electrical connection jig described in claim 1 to electrically connect a plurality of terminals provided on a circuit board connector mounted on the electronic circuit board to the measuring instrument, and inspecting the electrical identification of the electronic circuit board using the measuring instrument.

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