WO2023017737A1

WO2023017737A1 - Probe device

Info

Publication number: WO2023017737A1
Application number: PCT/JP2022/028987
Authority: WO
Inventors: 大樹保科; 裕介安部; 大輔池田
Original assignee: 日置電機株式会社
Priority date: 2021-08-10
Filing date: 2022-07-27
Publication date: 2023-02-16

Abstract

This invention provides a probe device that can be made to be significantly more compact than the prior art.　This probe device comprises an input cable that is connected to a probe terminal, an output terminal that is connected to a prescribed measurement device, and a relay box that reduces a voltage input via the probe terminal to a prescribed voltage level and then outputs the voltage from the output terminal to the measurement device. The relay box comprises: one case; another case; a circuit board that is disposed between the one case and other case, has a plurality of slits formed thereon, and has a plurality of resistance elements placed thereon in a wave shape so as to pass through the plurality of slits; and an insertion rib group comprising a plurality of ribs that are provided on the one case, the other case, or an intermediate member between the one case and other case and are respectively inserted into the plurality of slits on the circuit board so as to maintain a spatial distance between the plurality of resistance elements.

Description

Probe device

The present invention relates to a probe device, for example, to a probe device that drops a voltage input from a primary side, outputs it to a measuring device on the secondary side, and causes the measuring device to detect the voltage.

Conventionally, as a probe device, for example, there is a DC high voltage differential probe (hereinafter simply referred to as a "differential probe") that measures the battery voltage of electric vehicles and the like. A junction box is provided between the probe and the output cable in this type of differential probe.

In the differential probe, the high voltage of the battery, etc. on the primary side that is input via the probe is dropped to a low voltage by the relay box, and then output to the measuring device on the secondary side via the output cable to obtain the voltage. can be measured.

There is a power supply voltage detection device that has a function similar to this relay box (see Patent Document 1, for example). In this power supply voltage detection device, the voltage of the DC power supply is divided by a plurality of chip resistors in the voltage adjustment circuit, the voltage is lowered, and then output to the electronic control unit. is detected.

In the power supply voltage detection device disclosed in Patent Document 1, a plurality of chip resistors are connected in series, and a plurality of chip resistors are connected in series to ensure a sufficient creepage distance with respect to the operating voltage. It is

Here, regarding the distance between resistors when connecting chip resistors in series, it is necessary to ensure insulation by satisfying the creepage distance and clearance distance specified in the international standard IEC61010-031. Creepage distance is the shortest distance along the surface of a solid insulating material between two conductive parts. Spatial distance is the shortest distance in space between two conductive parts.

JP 2019-49476 A

However, in the power supply voltage detection device disclosed in Patent Document 1, since a plurality of chip resistors are connected in series to ensure a sufficient creepage distance, the size in the longitudinal direction becomes large, and miniaturization is difficult. was difficult.

The present invention has been made in view of the above-mentioned problems, and aims to provide a probe device that can be made even more compact than before.

In the probe apparatus of the present invention, an input cable to which a probe terminal is connected, an output terminal connected to a predetermined measuring apparatus, and a voltage input through the probe terminal is lowered to a predetermined voltage level, and then a relay box for outputting from the output terminal to the measuring device, the relay box being disposed between one case, the other case, and the one case and the other case, and having a plurality of slits; is formed, and a plurality of resistor elements are installed in a wave shape so as to pass between the plurality of slits; and the one case or the other case or the one case and the other an insertion rib group comprising a plurality of ribs provided in an intermediate member between the case and the plurality of ribs respectively inserted into the plurality of slits of the circuit board so as to satisfy the spatial distances between the plurality of resistor elements. .

In the present invention, the other case has the insertion rib, and the one case has a support rib group consisting of a plurality of ribs for supporting the back surface of the circuit board on which the resistance element is not installed. is preferred.

In the present invention, each rib of the group of insertion ribs has a supporting piece that abuts against the circuit board without being inserted into the plurality of slits, and the circuit board is connected to the group of insertion ribs. It is preferable that it is sandwiched between the support piece and the support rib group of the one case.

In the present invention, it is preferable that the insertion rib group is arranged at a position of the other case that does not come into contact with the plurality of resistor elements installed in the wave shape.

In the present invention, it is preferable that the support rib group supports the circuit board from the rear surface at a position facing the plurality of resistance elements without facing the insertion rib group.

In the present invention, each rib of the support rib group preferably supports the back surface of the circuit board so as to fill the spatial distance between the plurality of resistance elements, similarly to the insertion rib group.

According to the present invention, it is possible to provide a probe device that is much more compact than conventional ones.

1 is a perspective view showing the overall configuration of a probe device according to one embodiment of the present invention; FIG. 1 is an exploded perspective view showing the configuration of a probe device according to one embodiment of the present invention; FIG. 1 is a perspective view showing a configuration of a circuit board housed in a relay box of a probe device according to one embodiment of the present invention; FIG. FIG. 4 is a perspective view showing the configuration of an upper case that forms a relay box of the probe device according to one embodiment of the present invention; FIG. 4 is a plan view showing the configuration of an upper case that forms a junction box of the probe device according to one embodiment of the present invention; FIG. 4 is a perspective view showing the configuration of a lower case that forms a junction box of the probe device according to one embodiment of the present invention; FIG. 4 is a plan view showing the configuration of a lower case that forms a relay box of the probe device according to one embodiment of the present invention; FIG. 3 is a perspective view showing the configuration of a circuit board, insertion ribs, and support ribs accommodated in a junction box of a probe device according to an embodiment of the present invention; 4A and 4B are a perspective view (A) and a vertical cross-sectional view (B) for explaining the spatial distance when there is no insertion rib of the upper case according to the embodiment of the present invention; FIG. FIG. 5 is a vertical cross-sectional perspective view for explaining a spatial distance when an insertion rib of an upper case according to an embodiment of the present invention exists; FIG. 4A is a perspective view (A) and a vertical cross-sectional view (B) for explaining the case where the spatial distance between a plurality of resistor elements is lengthened by the insertion rib of the upper case and the support rib of the lower case according to the embodiment of the present invention; is.

1. Outline of Embodiment First, an outline of a representative embodiment of the invention disclosed in the present application will be described. In the following description, as an example, reference numerals on the drawings corresponding to constituent elements of the invention are described with parentheses.

[1] A probe device (1) according to a representative embodiment of the present invention includes input terminals (130, 140) to which input probes are connected, and output terminals (112, 122) to be connected to a predetermined measuring device. ), and a relay box (200) for reducing the voltage input through the input terminals (130, 140) to a predetermined voltage level and then outputting the voltage from the output terminals (112, 122) to the measuring device. The relay box (200) is arranged between one case (250), the other case (230), and the one case (250) and the other case (230), and has a plurality of Slits (M1, S1 to S6, E1 to E4) are formed, and a plurality of resistor elements (R1 to R14, R15 to R28) arranged in a wave shape on a circuit board (210), the one case (250) or the other case (230), or the one case (250) and the other case (230) provided in an intermediate member between the plurality of slits (M1, S1 to S6, E1 to E4), and an insertion rib group (RB1, RB2) consisting of a plurality of ribs respectively inserted.

In the present invention, the other case (230) has the insertion rib group (RB1, RB2), and the one case (250) is provided with the resistance elements (R1 to R14, R15 to R28). It is preferable to have a support rib group (LB1, LB2) consisting of a plurality of ribs for supporting the back surface (210u) of the circuit board (210) which is not attached.

In the present invention, each rib of the insertion rib group (RB1, RB2) is brought into contact with the circuit board (210) without being inserted into the plurality of slits (M1, S1 to S6, E1 to E4). The circuit board (210) is connected between the support pieces of the insertion rib group (RB1, RB2) and the support rib group (LB1, LB2) of the one case (250). It is preferably sandwiched between them.

In the present invention, the insertion rib group (RB1, RB2) is the other case (230) that does not come into contact with the plurality of resistor elements (R1 to R14, R15 to R28) installed in the wave shape. is preferably arranged at the position of

In the present invention, the support rib group (LB1, LB2) does not face the insertion rib group (RB1, RB2) and faces the plurality of resistance elements (R1 to R14, R15 to R28). It is preferable to support the position of the circuit board (210) from the back surface.

In the present invention, each rib of the support rib group (LB1, LB2), like the insertion ribs (RB1, RB2), has a spatial distance between the plurality of resistor elements (R1 to R14, R15 to R28). It is preferable to support the back surface of the circuit board (210) so as to satisfy

2. Specific Example of Embodiment Hereinafter, a specific example of one embodiment of the present invention will be described with reference to the drawings. In the following description, constituent elements common to each embodiment are denoted by the same reference numerals, and repeated descriptions are omitted.

FIG. 1 is a perspective view showing the overall configuration of a probe device according to one embodiment of the present invention. FIG. 2 is an exploded perspective view showing the configuration of the probe device according to one embodiment of the present invention. FIG. 3 is a perspective view showing the configuration of a circuit board housed in a junction box of a probe device according to an embodiment of the invention. FIG. 4 is a perspective view showing the configuration of an upper case forming a relay box of the probe device according to one embodiment of the present invention. FIG. 5 is a plan view showing the configuration of an upper case that forms a junction box of the probe device according to one embodiment of the present invention. FIG. 6 is a perspective view showing the configuration of a lower case that forms a junction box of the probe device according to one embodiment of the present invention. FIG. 7 is a plan view showing the configuration of a lower case that forms a junction box of the probe device according to one embodiment of the present invention. FIG. 8 is a perspective view showing the configuration of a circuit board, insertion ribs, and support ribs housed in a junction box of a probe device according to an embodiment of the present invention. 9A and 9B are a perspective view (A) and a vertical cross-sectional view (B) for explaining the spatial distance when there is no insertion rib of the upper case according to the embodiment of the present invention. FIG. 10 is a vertical cross-sectional perspective view for explaining the spatial distance when there is an insertion rib of the upper case according to one embodiment of the present invention. 11A and 11B are a perspective view (A) and a vertical cross section for explaining the case where the spatial distance between a plurality of resistor elements is lengthened by the insertion rib of the upper case and the support rib of the lower case according to one embodiment of the present invention. It is a figure (B).

In the figure, the arrow a direction is one side, the arrow b direction is the other side, and the arrow ab direction is the longitudinal direction. A direction perpendicular to the longitudinal direction (arrow ab direction) is defined as a lateral direction. The direction of arrow c is upward or upward, and the direction of arrow d is downward or downward. However, "upward" or "downward" does not necessarily match the vertical direction of the gravitational direction, and is a direction set for convenience of explanation. Therefore, the vertical direction may be reversed.

<Overall Configuration of Probe Device>
As shown in FIGS. 1 and 2, the probe device 1 according to the embodiment of the present invention has two

input terminals

130 and 140 connected to two input probes (not shown) on the other side (direction of arrow b). It has a relay box 200 provided. The two

input terminals

130 and 140 are terminals connected to measure the voltage (for example, 1000 V or higher) of a battery or the like on the primary side via two input probes (not shown).

The junction box 200 has, on one side (in the direction of arrow a), a positive output cable 110 with a probe terminal 111 attached to its tip, and a

negative output cable

120 and 2 with a probe terminal 121 attached to its tip. It has two

connection terminals

112 , 122 connected to one

output cable

110 , 120 .

The two

output cables

110, 120 of the relay box 200 are connected to the measuring device on the secondary side. The measuring device receives and measures the high voltage input from the battery to the junction box 200 of the probe device 1 as a low voltage after voltage drop to a predetermined level via the

output cables

110 and 120 .

<Relay box>
The junction box 200 is composed of a circuit board 210 housed inside, an upper case 230 for housing the circuit board 210, and a lower case 250. As shown in FIG. A box case 270 that accommodates the circuit board 210 is formed by integrally attaching the upper case 230 and the lower case 250 . That is, junction box 200 is composed of box case 270 and circuit board 210 .

<Circuit board>
As shown in FIG. 3, the circuit board 210 is a thin printed wiring board that is rectangular in plan view, and has a shorter length L1 in the longitudinal direction (arrow ab direction) than the conventional one. The circuit board 210 has

terminals

211 and 212 electrically connected to the

output terminals

112 and 122 at one end (in the direction of the arrow a).

The circuit board 210 is connected to

terminals

211 and 212 and has a wave shape (for example, a pulse wave shape) with sharp edges from one side (direction of arrow a) to the other side (direction of arrow b) along the longitudinal direction (direction of arrow ab). ) on the positive electrode side and a conductive pattern 214 on the negative electrode side. Here, the

conductor patterns

213 and 214 may have various shapes such as a bellows shape, a wave shape with no sharp edges, a zigzag shape, and the like. I don't mind.

The

conductor patterns

213 and 214 are composed of a plurality of longitudinal direction (arrow ab direction) portions (hereinafter referred to as “longitudinal direction portions”) 213L (213L1 to 213L5) and a plurality of longitudinal direction (arrow ab directions) perpendicular to the longitudinal direction (arrow ab direction). (hereinafter referred to as "transverse direction portion") 213S and 213S are alternately connected to form a wavy shape. However, in FIG. 2, most of the width direction portion 213S is hidden due to the presence of resistance elements R1 to R14, which will be described later.

In the conductor pattern 213, three resistive elements R1 to R3 are installed in series in the first transverse direction portion 213S counted from one side (direction of arrow a). These resistive elements R1, R2, and R3 are electrically connected to each other through the lateral direction portion 213S of the conductor pattern 213. As shown in FIG.

Similarly, in the conductor pattern 213, following the resistive element R3, the resistive elements R4 to R6 are installed in the next second lateral portion 213S. In the conductor pattern 213, the resistor elements R7 to R9 are arranged in the next third lateral portion 213S following the resistor element R6.

Furthermore, in the conductor pattern 213, following the resistive element R9, the resistive elements R10 to R12 are installed in the next fourth transverse direction portion 213S, and following the resistive element R12, the last fifth transverse direction portion 213S. are provided with resistance elements R13 and R14.

The resistance element R1 is connected to the terminal 211 and the longitudinal portion 213L1 of the conductor pattern 213. Also, the resistive element R3 and the resistive element R4 are electrically connected by the longitudinal portion 213L2 of the conductor pattern 213. As shown in FIG.

Similarly, between the resistor element R6 and the resistor element R7, between the resistor element R9 and the resistor element R10, and between the resistor element R12 and the resistor element R13, the longitudinal portions 213L3, 213L4, and 213L5 of the conductor pattern 213 They are electrically connected to each other.

Note that the resistance element R14 is connected to the terminal 215 via the lateral direction portion 213S of the conductor pattern 213. Terminal 215 of circuit board 210 is connected to input terminal 130 ( FIG. 1 ) of junction box 200 .

In this manner, the resistor elements R1 to R14 are connected in series along the longitudinal portion 213L and the lateral portion 213S of the conductor pattern 213 in a wavy shape. The resistance elements R1 to R14 are hereinafter referred to as a first resistance element group GR1.

In the first resistance element group GR1, compared to the conventional structure in which all the resistance elements R1 to R14 are arranged and connected in series on a single straight line, since they are connected in a wave shape, the entire length is further increased. It's getting shorter. As a result, the circuit board 210 can be made much shorter in length L1 in the longitudinal direction (arrow ab direction) than in the conventional art.

The conductor pattern 214 is the same as the conductor pattern 213, and three resistance elements R15 to R17 are installed in series in the first transverse direction portion 214S. They are electrically connected to each other via the lateral portion 214S.

Similarly, in the conductor pattern 214, resistive elements R18 to R20 are installed in the second transverse direction portion 214S following the resistive element R17, and resistive elements R18 to R20 are installed in the third transverse direction portion 214S following the resistive element R20. 214S are provided with resistance elements R21 to R23. Further, in the conductor pattern 214, following the resistive element R23, resistive elements R24 to R26 are provided in the next fourth transverse direction portion 214S, and resistive elements R24 to R26 are provided in the last transverse direction portion 214S following the resistive element R26. R27 and R28 are installed.

The resistance element R15 is connected to the terminal 212 by the longitudinal portion 214L1 of the conductor pattern 214. Also, the resistive element R17 and the resistive element R18 are electrically connected by a longitudinal portion 214L2 of the conductor pattern 214. As shown in FIG.

Similarly, between the resistor element R20 and the resistor element R21, between the resistor element R23 and the resistor element R24, and between the resistor element R26 and the resistor element R27, the longitudinal direction portions 214L3, 214L4, and 214L5 of the conductor pattern 214 They are electrically connected to each other.

Note that the resistance element R28 is connected to the terminal 216 via the lateral direction portion 214S of the conductor pattern 214. Terminal 216 of circuit board 210 is connected to input terminal 140 ( FIG. 1 ) of junction box 200 .

In this manner, the resistance elements R15 to R28 are also connected in series in a wave shape along the conductor pattern 214 in the same manner as the resistance elements R1 to R14. The resistance elements R15 to R28 are hereinafter referred to as a second resistance element group GR2.

In the second resistor element group GR2 as well, the resistor elements R15 to R28 are all arranged and connected in series on a single straight line as in the related art. Overall length is shorter. As a result, the circuit board 210 can further reduce the length L1 in the longitudinal direction (arrow ab direction) by the first resistance element group GR1 and the second resistance element group GR2 compared to the conventional case.

The circuit board 210 includes a first resistance element group GR1 composed of resistance elements R1 to R14 connected via a conductor pattern 213, and a second resistance element group composed of resistance elements R15 to R28 connected via a conductor pattern 214. It has a main slit M1 extending along the longitudinal direction (arrow ab direction) so as to separate it from GR2 in the lateral direction.

The main slit M1 has a predetermined width and a predetermined length extending from the end surface 210e on the other side (direction of arrow b) to the end surface 210f on one side (direction of arrow a) along the longitudinal direction (direction of arrow ab) for a predetermined length. is the slit. However, the main slit M1 does not reach the end face 210f on one side of the circuit board 210 (in the direction of the arrow a).

In addition, the circuit board 210 has sub-slits S1 and S4 extending from one end of the main slit M1 (in the direction of the arrow a) to both sides in the short direction perpendicular to the longitudinal direction (the direction of the arrow ab). .

Each of the sub-slits S1 and S4 extends in the lateral direction by a predetermined length, but the length does not reach the longitudinal portion 213L1 of the conductor pattern 213 and the longitudinal portion 214L1 of the conductor pattern 214. have. The main slit M1 and the sub-slits S1 and S4 communicate with each other.

Further, the circuit board 210 has sub-slits S2 and S5 at positions separated by a predetermined distance from the sub-slits S1 and S4 to the other side (in the direction of the arrow b). The sub-slit S2 and the sub-slit S1 are arranged so as to sandwich the resistance elements S1 to S3 and the resistance elements S4 to S6. The sub-slit S2 is parallel to the sub-slit S1 and has the same length, and does not reach the longitudinal portion 213L3 of the conductor pattern 213. As shown in FIG. The sub-slit S2 communicates with the main slit M1.

The sub-slit S5 and the sub-slit S4 are arranged so as to sandwich the resistance elements S15 to S17 and the resistance elements S18 to S20. The sub-slit S5 is parallel to the sub-slit S4 and has the same length, and does not reach the longitudinal portion 214L3 of the conductor pattern 214. FIG. The sub-slit S5 communicates with the main slit M1.

Similarly, the circuit board 210 has sub-slits S3 and S6 at positions separated from the sub-slits S2 and S5 by a predetermined distance to the other side (in the direction of the arrow b). The sub-slit S3 and the sub-slit S2 are arranged so as to sandwich the resistance elements S7 to S9 and the resistance elements S10 to S12. The sub-slit S3 is parallel to the sub-slits S1 and S2 and has the same length, and does not reach the longitudinal portion 213L5 of the conductor pattern 213 . The sub-slit S3 communicates with the main slit M1.

The sub-slit S6 and the sub-slit S5 are arranged so as to sandwich the resistance elements S21 to S23 and the resistance elements S24 to S26. The sub-slit S6 is parallel to the sub-slits S4 and S5 and has the same length, and does not reach the longitudinal portion 214L5 of the conductor pattern 214. FIG. The sub-slit S6 communicates with the main slit M1.

In this way, the sub-slits S1 to S3 have the same basic configuration, the same width and the same length in the transverse direction, and are arranged parallel to each other. Further, the sub-slits S4 to S6 have the same basic configuration, have the same width and the same length in the transverse direction, and are arranged parallel to each other.

The sub-slit S1 and the sub-slit S4 are linearly connected via the main slit M1 in the lateral direction of the circuit board 210 . The sub-slits S2 and S3 and the sub-slits S5 and S6 are also linearly connected in the lateral direction of the circuit board 210 via the main slit M1. That is, the main slit M1, the sub-slits S1 to S3, and the sub-slits S4 to S6 communicate with each other while crossing each other.

Further, in the circuit board 210, between the row of the resistance elements R1 to R3 and the row of the resistance elements R4 to R6 in the first resistance element group GR1, the line extending from the side end surface 210c toward the main slit M1. It has a slit (hereinafter referred to as an "edge slit") E1. The edge slit E1 consists of a cut having a length that does not reach the longitudinal portion 213L2 of the conductor pattern 213, and is arranged between the sub-slit S1 and the sub-slit S2.

Similarly, in the circuit board 210, between the row of the resistance elements R7 to R9 and the row of the resistance elements R10 to R12 in the first resistance element group GR1, from the side end surface 210c toward the main slit M1. It has an extending edge slit E2. The edge slit E2 is a cut having a length not reaching the longitudinal portion 213L4 of the conductor pattern 213, and is arranged between the sub-slit S2 and the sub-slit S3.

Thus, in the circuit board 210, due to the existence of the main slit M1, the sub-slits S1 to S3, and the edge slits E1 and E2, a board portion for printing the wave-shaped conductor pattern 213 on the circuit board 210 is left. ing.

Similarly, in the circuit board 210, between the row of the resistance elements R15 to R17 and the row of the resistance elements R18 to R20 in the second resistance element group GR2, from the side end surface 210d toward the main slit M1. It has an extending edge slit E3. The edge slit E3 consists of a cut having a length that does not reach the longitudinal portion 214L2 of the conductor pattern 214, and is arranged between the sub-slit S4 and the sub-slit S5.

Furthermore, in the circuit board 210, between the row of the resistance elements R21 to R23 and the row of the resistance elements R24 to R26 in the second resistance element group GR2, the line extending from the side end surface 210d toward the main slit M1. It has an edge slit E4. The edge slit E4 consists of a cut having a length that does not reach the longitudinal portion 214L4 of the conductor pattern 214, and is arranged between the sub-slit S5 and the sub-slit S6.

Thus, in the circuit board 210, due to the presence of the main slit M1, the sub-slits S4 to S6, and the edge slits E3 and E4, a board portion for printing the wave-shaped conductor pattern 214 on the circuit board 210 is left. ing.

<Upper case>
As shown in FIGS. 4 and 5, the upper case 230 of the box case 270 has an internal space capable of accommodating the circuit board 210 when combined with the lower case 250, and is made of an insulating material such as resin. It is a shaped case body. In particular, FIGS. 3 and 4 show the configuration of the inner portion formed on the rear surface 230u of the upper case 230 forming the box case 270. FIG.

The upper case 230 includes a first insertion rib group RB1 made up of a plurality of ribs that are insertably provided corresponding to the main slit M1, the sub-slits S1 to S3, and the edge slits E1 and E2 of the circuit board 210, respectively; It has a second inserting rib group RB2 composed of a plurality of ribs which are insertably provided corresponding to the slit M1, the sub-slits S4 to S6, and the edge slits E3 and E4, respectively.

The first insertion rib group RB1 includes a main rib mr1 inserted into the main slit M1 of the circuit board 210, sub-ribs sr1 to sr3 respectively inserted into the sub-slits S1 to S3 of the circuit board 210, edge slits E1 of the circuit board 210, It has edge ribs er1 and er2 which are inserted respectively against E2.

The main rib mr1 of the first insertion rib group RB1 is, of the frame rib WR1 formed in a substantially U-shaped frame as a whole, facing the main slit M1 of the circuit board 210 and extending along the longitudinal direction (arrow ab direction). It is an elongated linear rib portion.

The main rib mr1 is arranged substantially in the central portion of the upper case 230 . The main rib mr1 has a length slightly shorter than the main slit M1 in the longitudinal direction (arrow ab direction), and is integrated with the sub-rib sr1 at one end (arrow a direction).

The sub-rib sr1 is a rib that faces the sub-slit S1 of the circuit board 210 and extends linearly along the lateral direction perpendicular to the longitudinal direction (arrow ab direction). The sub-rib sr2 is a rib that faces the sub-slit S2 of the circuit board 210 and extends along the lateral direction orthogonal to the longitudinal direction (arrow ab direction), and has the same length as the sub-rib sr1.

The sub-rib sr3 is also a rib that extends linearly along the lateral direction orthogonal to the longitudinal direction (arrow ab direction) facing the sub-slit S3 of the circuit board 210, and has the same length as the sub-ribs sr1 and sr2. have.

The sub-ribs sr1 to sr3 are provided with the same spacing from each other. The sub-rib sr1 and the sub-rib sr2 are in a positional relationship such that the resistance elements R1 to R3 and the resistance elements R4 to R6 of the first resistance element group GR1 can be arranged therebetween. Further, the sub-rib sr2 and the sub-rib sr3 are in a positional relationship such that the resistance elements R7 to R9 and the resistance elements R10 to R12 of the first resistance element group GR1 can be arranged between them.

The edge ribs er1 and er2 face the edge slits E1 and E2 of the circuit board 210 and extend linearly from the outer side of the frame rib WR1 toward the main rib mr1 along the lateral direction perpendicular to the longitudinal direction (arrow ab direction). It is a rib that extends to The edge ribs er1 and er2 are formed integrally with the frame rib WR1.

The edge rib er1 is arranged midway between the sub-rib sr1 and the sub-rib sr2 in the longitudinal direction (arrow ab direction). The edge rib er2 is arranged midway between the sub-rib sr2 and the sub-rib sr3 in the longitudinal direction (arrow ab direction). That is, the sub-ribs sr1 to sr3 and the edge ribs er1 and er2 are alternately arranged in the longitudinal direction (arrow ab direction).

As shown in FIG. 8, a main rib mr1 (not shown in FIG. 8), sub-ribs sr1 to sr3, and edge ribs er1 and er2 are arranged between the upper case 230 and the lower case 250. It is inserted into the main slit M1 (not shown in FIG. 8), the sub-slits S1 to S3, and the edge slits E1 and E2 of the substrate 210, but has a height that does not reach the lower case 250.

Also, the main rib mr1 is integrally formed with a plurality of support pieces ss11 to ss13 slightly protruding in the lateral direction orthogonal to the longitudinal direction (arrow ab direction). The support pieces ss11 to ss13 are alternately arranged with the sub-ribs sr1 to sr3 in the longitudinal direction (arrow ab direction). Further, the support pieces ss11 and ss12 are arranged so as to face the edge ribs er1 and er2 in the lateral direction orthogonal to the longitudinal direction (ab direction).

The support pieces ss11 to ss13 only protrude short in the transverse direction from the main rib mr1, and particularly in the support pieces ss11 and ss12, a predetermined gap is formed between the edge rib er1 and the edge rib er2 in the transverse direction. ing. That is, longitudinal portions 213L2 and 213L4 of the conductor pattern 213 of the circuit board 210 are positioned between the supporting pieces ss11 and ss12 of the main rib mr1 and the edge ribs er1 and er2, respectively.

These support pieces ss11 to ss13 are lower in height than the main rib mr1, and have end surfaces ss11t to ss13t (FIG. 5), which are surfaces that support the circuit board 210 from above by coming into contact with the circuit board 210. are doing.

In the sub-ribs sr1 to sr3, two supports are formed so as to face each other on one side (arrow a direction) and the other side (arrow b direction) in the longitudinal direction (arrow ab direction). Pieces pp11 and pp12, support pieces pp21 and pp22, and support pieces pp31 and pp32 are formed, respectively. However, in FIG. 4, the support pieces pp11, pp21, and pp31 are not shown because they are behind the sub-ribs sr1 to sr3.

These support pieces pp11 and pp12, support pieces pp21 and pp22, and support pieces pp31 and pp32 are also lower in height than the sub-ribs sr1 to sr3, and are in contact with the circuit board 210 to support the circuit board 210 from above. end faces pp11t, pp12t, end faces pp21t, pp22t, end faces pp31t, pp32t, which are faces to be connected. However, in FIG. 4, the end faces pp11t, pp21t, and pp31t are not shown because they are behind the sub-ribs sr1 to sr3.

In the edge ribs er1 and er2 as well, two supports are formed so as to face each other on one side (arrow a direction) and the other side (arrow b direction) in the longitudinal direction (arrow ab direction). Pieces qq11 and qq12 and support pieces qq21 and qq22 are formed respectively.

These support pieces qq11 and qq12 and support pieces qq21 and qq22 are also lower in height than the edge ribs er1 and er2, and are surfaces that come into contact with the circuit board 210 and support the circuit board 210 from above. It has end faces qq11t, qq12t and end faces qq21t, qq22t (FIG. 5).

Note that the end faces ss11t to ss13t of the support pieces ss11 to ss13 of the main rib mr1, the end faces pp11t, pp12t, and the end faces pp21t, pp22t of the support pieces pp11, pp12, support pieces pp21, pp22, and support pieces pp31, pp32 of the sub-ribs sr1 to sr3, respectively. , end faces pp31t, pp32t, and end faces qq11t, qq12t and end faces qq21t, qq22t of the supporting pieces qq11, qq12, supporting pieces qq21, qq22 of the edge ribs er1, er2 are all the same height, and the circuit board 210 It is a surface to be abutted with. Hereinafter, all these end faces are collectively referred to as a first support piece end face group RB1t.

The second insertion rib group RB2 consists of a plurality of ribs that are symmetrical with the first insertion rib group RB1 about the center line X along the longitudinal direction (arrow ab direction). That is, the second insertion rib group RB2 includes a main rib mr2 inserted into the main slit M1 of the circuit board 210, sub-ribs sr4 to sr6 respectively inserted into the sub-slits S4 to S6 of the circuit board 210, and edge slits of the circuit board 210. It has edge ribs er3 and er4 that are inserted into E4 and E5, respectively.

The main rib mr2 of the second insertion rib group RB2 extends along the longitudinal direction (arrow ab direction) facing the main slit M1 of the circuit board 210 among the frame ribs WR2 formed in a substantially U-shaped frame as a whole. It is an elongated rib portion.

The main rib mr2 is arranged substantially in the central portion of the upper case 230. The main rib mr2 is provided at a position adjacent to the main rib mr1 of the first insertion rib group RB1 with a slight gap therebetween, and is formed to have the same length as the main rib mr1 in parallel.

That is, both the main rib mr1 and the main rib mr2 are inserted into the main slit M1 of the circuit board 210. Here, the gap between the main rib mr1 and the main rib mr2 is a distance that allows a center rib cr1 of the lower case 250, which will be described later, to be inserted.

The main rib mr2 has a length slightly shorter than the main slit M1 of the circuit board 210, and is integrated with the sub-rib sr4 at one end (in the direction of the arrow a).

The sub-rib sr4 is a rib that faces the sub-slit S4 of the circuit board 210 and extends along the lateral direction orthogonal to the longitudinal direction (arrow ab direction). The sub-rib sr5 is a rib that faces the sub-slit S5 of the circuit board 210 and extends along the lateral direction orthogonal to the longitudinal direction (arrow ab direction), and has the same length as the sub-rib sr4.

The sub-rib sr6 is also a rib extending along the lateral direction perpendicular to the longitudinal direction (arrow ab direction) facing the sub-slit S3 of the circuit board 210, and has the same length as the sub-ribs sr4 and sr5. there is

The sub-ribs sr4 to sr6 are provided with the same spacing from each other. The sub-rib sr4 and the sub-rib sr5 are in a positional relationship such that the resistance elements R15 to R173 and the resistance elements R18 to R20 of the circuit board 210 can be arranged therebetween. Further, the sub-rib sr5 and the sub-rib sr6 are in a positional relationship such that the resistance elements R21 to R23 and the resistance elements R24 to R26 of the circuit board 210 can be arranged therebetween.

The edge ribs er3 and er4 face the edge slits E3 and E4 of the circuit board 210 and extend linearly from the outer side of the frame rib WR2 toward the main rib mr2 along the lateral direction perpendicular to the longitudinal direction (arrow ab direction). It is a rib that extends to the The edge ribs er3 and er4 are formed integrally with the frame rib WR2.

The edge rib er3 is arranged midway between the sub-ribs sr4 and sr5 in the longitudinal direction (arrow ab direction). The edge rib er4 is arranged midway between the sub-rib sr5 and the sub-rib sr6 in the longitudinal direction (arrow ab direction). That is, the sub-ribs sr4 to sr6 and the edge ribs er3 and er4 are alternately arranged in the longitudinal direction (arrow ab direction).

Note that the main rib mr2, the sub-ribs sr4 to sr6, and the edge ribs er3 and er4 also correspond to the main slit M1, the sub-slits S4 to S6, and the edge slit E3 of the circuit board 210 arranged between the upper case 230 and the lower case 250. , E 4 , but has a height that does not reach the lower case 250 .

Also, the main rib mr2 is integrally formed with a plurality of supporting pieces ss21 to ss23 that slightly protrude in the lateral direction perpendicular to the longitudinal direction (arrow ab direction), similarly to the main rib mr1.

The support pieces ss21 to ss23 are alternately arranged with the sub-ribs sr1 to sr3 in the longitudinal direction (arrow ab direction). The support pieces s21 and ss22 are arranged so as to face the edge ribs er3 and er4 in the lateral direction perpendicular to the longitudinal direction (ab direction).

The support pieces ss21 to ss23 only protrude short in the lateral direction, and in particular, the support pieces ss21 and ss22 are provided with a predetermined gap from the edge ribs er1 and er2. That is, longitudinal portions 214L2 and 214L4 of the conductor pattern 214 are positioned between the supporting pieces ss21 and ss22 of the main rib mr2 and the edge ribs er1 and er2, respectively.

These support pieces ss21 to ss23 have end faces ss21t to ss23t that are lower than the height of the main rib mr2 and that are surfaces that contact the circuit board 210 and support the circuit board 210 from above.

In the sub-ribs sr4 to sr6, two supports are formed so as to face each other on one side (arrow a direction) and the other side (arrow b direction) in the longitudinal direction (arrow ab direction). Pieces pp41 and pp42, support pieces pp51 and pp52, and support pieces pp61 and pp62 are formed, respectively. However, in FIG. 4, the support pieces pp41, pp51, and pp61 are not shown because they are behind the sub-ribs sr1 to sr3.

These support pieces pp41 and pp42, support pieces pp51 and pp52, and support pieces pp61 and pp62 are also lower than the height of the sub-ribs sr4 to sr6, and are in contact with the circuit board 210 to support the circuit board 210 from above. end faces pp41t, pp42t, end faces pp51t, pp52t, and end faces pp61t, pp62t. However, in FIG. 4, the end faces pp41t, pp51t, and pp61t are not shown because they are behind the sub-ribs sr1 to sr3.

In the edge ribs er3 and er4 as well, two supports are formed so as to face each other on one side (arrow a direction) and the other side (arrow b direction) in the longitudinal direction (arrow ab direction). Pieces qq31 and qq32 and support pieces qq41 and qq42 are formed respectively.

The support pieces qq31, qq32, and the support pieces qq41, qq42 are also lower in height than the edge ribs er3, er4, and end surfaces qq31t are surfaces that are in contact with the circuit board 210 and support the circuit board 210 from above. , qq32t, and end faces qq41t, qq42t (FIG. 5).

Note that the end surfaces ss21t to ss23t of the support pieces ss21 to ss23 of the main rib mr2, the end surfaces pp41t, pp42t, and the end surfaces pp51t, pp52t of the support pieces pp41, pp42, support pieces p51, pp52, and support pieces pp61, pp62 of the sub-ribs sr4 to sr6, respectively. , end faces pp61t, pp62t, support pieces qq31, qq32, end faces qq31t, qq32t, and end faces qq41t, qq42t of the support pieces qq31, qq32, support pieces qq41, qq42 of the edge ribs er3, er4 are all of the same height and are in contact with the circuit board 210. It is an aspect that Hereinafter, all these end faces are collectively referred to as a second support piece end face group RB2t.

<Lower case>
Subsequently, as shown in FIGS. 6 and 7, the lower case 250 of the box case 270 is made of an insulating material such as resin having an internal space capable of accommodating the circuit board 210 when combined with the upper case 230. It is a rectangular case body. In particular, FIGS. 6 and 7 show the configuration of the inner portion formed on the rear surface 250u of the lower case 250 forming the box case 270. FIG.

The lower case 250 has a center rib cr1, and a first support rib group LB1 and a second support rib group LB2 each made up of a plurality of ribs. The center rib cr1 of the lower case 250 faces the main slit M1 of the circuit board 210 and the main ribs mr1 and mr2 of the upper case 230 among the frame ribs WR3 formed in a substantially U-shaped frame as a whole. , rib portions extending linearly along the longitudinal direction (arrow ab direction).

The center rib cr1 of the lower case 250 has the same length as the main ribs mr1 and mr2 of the upper case 230. The center rib cr1 is located between the main rib mr1 and the main rib mr2 of the upper case 230 inserted into the main slit M1 of the circuit board 210 when the upper case 230 and the lower case 250 are combined with the circuit board 210 accommodated. It has a width and height that allows it to be inserted into a

The center rib cr1 is formed higher than each rib of the first supporting rib group LB1 and the second supporting rib group LB2 so as to be able to be inserted between the main rib mr1 and the main rib mr2 of the upper case 230. .

The first support rib group LB1 consists of a plurality of ribs provided at positions facing the conductor pattern 213 of the circuit board 210 and the first resistance element group GR1, and has a height lower than that of the center rib cr1.

The second support rib group LB2 is composed of a plurality of ribs provided at positions facing the conductor pattern 214 of the circuit board 210 and the second resistor element group GR2, and has a height lower than that of the center rib cr1. there is All of the ribs in the first supporting rib group LB1 and the second supporting rib group LB2 have the same height.

The first support rib group LB1 of the lower case 250 has longitudinal ribs nr31 to nr35 provided at positions facing the longitudinal portions 213L1 to 213L5 of the conductor pattern 213 of the circuit board 210, respectively.

That is, the longitudinal ribs nr31 to nr35 have the same length as the longitudinal portions 213L1 to 213L5 of the conductor pattern 213. These longitudinal ribs nr31 to nr35 form an upper end face (hereinafter referred to as "upper end face") that supports the back surface of the circuit board 210 (that is, the face on the side where the resistor elements R1 to R28 are not installed) from below. .) nr31t to nr35t (FIG. 7).

The first support rib group LB1 faces the resistance elements R1 to R3, the resistance elements R4 to R6, the resistance elements R7 to R9, the resistance elements R10 to R12, and the resistance elements R13 to R14 of the first resistance element group GR1. It has ribs rr31 to rr35 provided at the position of the circuit board 210 and supporting the back surface of the circuit board 210 from below (hereinafter referred to as "resistor element supporting ribs"). These resistive element supporting ribs rr31 to rr35 also have upper end surfaces rr31t to rr35t (FIG. 7) that support the resistive elements R1 to R14 from below the circuit board 210. As shown in FIG.

These resistance element supporting ribs rr31 to rr35 not only face the resistance elements R1 to R3, R4 to R6, R7 to R9, R10 to R12, R13 to R14 of the first resistance element group GR1, but also extend to the center rib cr1. It has a length in the lateral direction that extends.

That is, in the first support rib group LB1, the longitudinal ribs nr31 to nr35 and the resistance element support ribs rr31 to rr35 are integrally formed, and the resistance element support ribs rr31 to rr35 and the center rib cr1 are integrally formed. there is The longitudinal rib nr31 is also formed integrally with a circuit element support rib rr310 provided on the circuit board 210 at a position facing the circuit element group 310 on which various circuit elements are mounted.

The upper end surfaces nr31t to nr35t of the longitudinal ribs nr31 to nr35 in the first support rib group LB1 and the upper end surfaces rr31t to rr35t of the resistor element support ribs rr31 to rr35 are collectively referred to as a first support rib end surface group LB1t.

The second support rib group LB2 of the lower case 250 is similar to the first support rib group LB1, and the longitudinal rib nr41 provided at positions facing the longitudinal portions 214L1 to 214L5 of the conductor pattern 214 of the circuit board 210, respectively. to nr45.

That is, the longitudinal ribs nr41 to nr45 have the same length as the longitudinal portions 214L1 to 214L5 of the conductor pattern 214 on the circuit board 210. These longitudinal ribs nr41 to nr45 have upper end surfaces nr41t to nr45t (FIG. 7) that support the back surface of the circuit board 210 from below.

In addition, the second support rib group LB2 faces the resistance elements R15 to R17, the resistance elements R18 to R20, the resistance elements R21 to R23, the resistance elements R24 to R26, and the resistance elements R27 to R28 of the second resistance element group GR2. It has resistance element supporting ribs rr41 to rr45 which are provided at positions and support these resistance elements from below the circuit board 210 . These resistive element support ribs rr41 to rr45 also have upper end surfaces rr41t to rr45t (FIG. 7) that support the circuit board 210 from below.

These resistance element support ribs rr41 to rr45 not only face the resistance elements R15 to R17, R18 to R20, R21 to R23, R24 to R26, R27 to R28 of the second resistance element group GR2, but also extend to the center rib cr1. It has a length in the lateral direction that extends.

That is, the second support rib group LB2 includes integrally formed longitudinal ribs nr41 to nr45 and resistance element support ribs rr41 to rr45, and integrally formed resistance element support ribs rr41 to rr45 and a center rib cr1. there is The longitudinal rib nr41 is also formed integrally with a circuit element support rib rr320 provided on the circuit board 210 at a position facing the circuit element group 320 on which various circuit elements are mounted.

The upper end surfaces nr41t to nr45t of the longitudinal ribs nr41 to nr45 in the second support rib group LB2 and the upper end surfaces rr41t to rr45t of the resistor element support ribs rr41 to rr45 are collectively referred to as a second support rib end surface group LB2t.

<Action and effect>
In the above configuration, in the probe device 1, when the box case 270 is formed by attaching the circuit board 210 between the upper case 230 and the lower case 250 so as to sandwich the circuit board 210, the inner space of the box case 270 is formed. The circuit board 210 is accommodated in 270S.

At this time, the center rib cr1 of the lower case 250 is inserted into the main slit M1 of the circuit board 210 and is also inserted into the gap between the main rib mr1 and the main rib mr2 of the upper case 230. As a result, the position of the circuit board 210 in the lateral direction is restricted with respect to the upper case 230 and the lower case 250 .

At this time, the sub-ribs sr1 to sr6 and the edge ribs er1 to er4 of the upper case 230 are inserted into the sub-slits S1 to S6 and the edge slits E1 to E4 of the circuit board 210. In addition, the position of the lower case 250 in the longitudinal direction (arrow ab direction) and the lateral direction is more firmly regulated.

Also, in this state, the circuit board 210 is supported from below by the first support rib end surface group LB1t and the second support rib end surface group LB2t of the lower case 250 . At the same time, the circuit board 210 is pressed from above by the first support piece end surface group RB1t and the second support piece end surface group RB2t of the upper case 230 .

That is, the circuit board 210 is located between the first support piece end surface group RB1t and the second support piece end surface group RB2t of the upper case 230 and the first support rib end surface group LB1t and the second support rib end surface group LB2t of the lower case 250. sandwiched between.

As a result, although the relay box 200 has a plurality of slits (the main slit M1, the sub-slits S1 to S6, and the edge slits E1 to E4) formed in the circuit board 210, the circuit board 210 is positioned in the upper case. The circuit board is sandwiched from above and below by the first support piece end surface group RB1t and the second support piece end surface group RB2t of the lower case 250 and the first support rib end surface group LB1t and the second support rib end surface group LB2t of the lower case 250. It is possible to suppress deformation of the substrate 210 due to lack of strength.

At the same time, in the junction box 200, since the sub-ribs sr1 to sr6 and the edge ribs er1 to er4 of the upper case 230 are inserted into the sub-slits S1 to S6 and the edge slits E1 to E4 of the circuit board 210, the circuit board 210 is not bent or the like. can also be suppressed.

9A and 9B, in the relay box 200, a first insertion rib group RB1 (main rib mr1, sub-ribs sr1 to sr3 and edge ribs er1 and er2) is provided inside the upper case 230. Even if the creepage distance between the resistance elements R1 and R12 adjacent to each other is satisfied, for example, the spatial distance between the resistance elements R1 and R12 as indicated by the solid line arrows is unable to meet.

However, as shown in FIG. 10, the junction box 200 has an internal space 270S of the box case 270 partitioned in the longitudinal direction (arrow ab direction) by sub-ribs sr1 to sr3 and edge ribs er1 and er2 of the upper case 230, for example. ing.

As a result, the spatial distance between the resistive element R1 and the resistive element R12 is shown by the solid line due to the existence of the edge rib er1, the sub-rib sr2, and the edge rib er2 compared to the case where the upper case 230 is not provided with the first insertion rib group RB1. It will be extended as shown. Thus, the junction box 200 can satisfy the creepage distance and the clearance defined in the international standard IEC61010-031.

Further, as shown in FIG. 10, in the box case 270 of the relay box 200, only the first insertion rib group RB1 and the second insertion rib group RB2 provided on the inner side of the upper case 230 provide a specified spatial distance. Even if it is not possible to satisfy the spatial distance, the presence of the first supporting rib group LB1 and the second supporting rib group LB2 provided inside the lower case 250 as shown in FIG. 11 can further extend the spatial distance. can.

Specifically, as shown in FIG. 11A, in addition to edge rib er1, sub-rib sr2, and edge rib er2 in first insertion rib group RB1 of upper case 230, Due to the presence of the resistive element supporting ribs rr42 and rr43, the spatial distance between the resistive element R1 and the resistive element R12 is further extended as indicated by the thick solid line.

Also, as shown in FIG. 11B, for example, the spatial distance between the resistance element R1 and the resistance element R7 extends from the space above the circuit board 210 on which the resistance element R1 is installed to the space below the circuit board 210. , then over the edge rib er1, through the gap between the circuit board 210 and the resistor element supporting rib rr42, over the sub-rib sr2 and leading to the resistor element R7 in the space above the circuit board 210 (broken line).

Thus, in addition to the edge rib er1, the sub-rib sr2, and the edge rib er2 of the upper case 230, the presence of the resistive element supporting rib rr42 of the lower case 250 can further extend the spatial distance between the resistive element R1 and the resistive element R7. .

Incidentally, as shown in FIG. 11B, for example, the spatial distance between the resistor element R7 and the resistor element R12 is the edge slit E2 and the edge rib er2 from the upper space of the circuit board 210 on which the resistor element R7 is mounted. to the space below the circuit board 210 through the gap between the resistor element R12 and the edge rib er2. is the length (solid line) leading to Thus, even between the adjacent resistance elements R7 and R12, the spatial distance defined by the existence of the edge rib er2 of the upper case 230 can be satisfied.

According to the above configuration, in the junction box 200 of the probe apparatus 1, for example, a plurality of resistance elements R1 to R14 and R15 to R28 are arranged in a wave shape on the circuit board 210, so that the longitudinal direction of the circuit board 210 is The length L1 (in the direction of the arrow ab) can be further shortened compared to the conventional art, and the overall size can be reduced.

Further, in the relay box 200 of the probe apparatus 1, the main slit M1, the sub-slits S1 to S6, and the edge slits E1 to E4 provided on the circuit board 210 are connected to the first insertion rib group RB1 and the second insertion rib group RB1 of the upper case 230. While inserting the insertion rib group RB2, the circuit board 210 is pressed from above by the first support piece end surface group RB1t and the second support piece end surface group RB2t of the upper case 230, and the first support rib end surface group LB1t of the lower case 250 and The circuit board 210 was supported from below by the second support rib end face group LB2t.

As a result, in the relay box 200, the circuit board 210 is sandwiched between the upper case 230 and the lower case 250, so that the circuit board 210 can be firmly held and deformation can be prevented.

Furthermore, in the junction box 200, since the plurality of resistive elements R1 to R14 and R15 to R28 are arranged along the

conductor patterns

213 and 214 in a wavy shape, there is a possibility that the specified spatial distance for the operating voltage between the resistive elements may not be satisfied. occur. However, in the box case 270 of the junction box 200, the first insertion rib group RB1 and the second insertion rib group RB2 of the upper case 230 and the first support rib group LB1 and the second support rib group LB2 of the lower case 250 can satisfy the spatial distance between all resistive elements.

<<Expansion of Embodiment>>
Although the invention made by the inventors of the present application has been specifically described above based on the embodiments, it goes without saying that the present invention is not limited thereto, and various modifications can be made without departing from the gist of the invention. stomach.

For example, in the above embodiment, in the box case 270 of the junction box 200, the first insertion rib group RB1 and the second insertion rib group RB2 of the upper case 230, the first support rib group LB1 of the lower case 250, the second A case has been described in which both of the two support rib groups LB2 satisfy the spatial distance between the resistance elements. However, the present invention is not limited to this. If only one of them can satisfy the spatial distance between the resistive elements, either the first insertion rib group RB1 or the second insertion rib group RB2 or the first support rib group LB1 or the second support rib group LB2 can be used. Only one of them may satisfy the spatial distance between the resistance elements.

Further, in the above-described embodiment, the upper case 230 is provided with the first insertion rib group RB1 and the second insertion rib group RB2 each including a plurality of ribs inserted into the slits of the circuit board 210, and the lower case 250 is provided with the first supporting rib group LB1 and the second supporting rib group LB2 for supporting the circuit board 210 from below, but the present invention is not limited to this. The support rib group LB1 and the second support rib group LB2 may be provided, and the lower case 250 may be provided with the first insertion rib group RB1 and the second insertion rib group RB2. A plate-shaped intermediate member interposed between the upper case 230 and the lower case 250 is provided with a first insertion rib group RB1 and a second insertion rib group RB2. Alternatively, the intermediate member may be placed between the circuit board 210 and the lower case 250 to be inserted into each slit of the circuit board 210 .

Furthermore, in the above-described embodiment, the upper case 230 is provided with the first insertion rib group RB1 and the second insertion rib group RB2, which are formed of a plurality of ribs inserted into the slits of the circuit board 210, and the lower case A case in which the first support rib group LB1 and the second support rib group LB2 for supporting the circuit board 210 from below are provided on 250 has been described. However, the present invention is not limited to this. an upper case 230 having a first insertion rib group RB1 and a second insertion rib group RB2 if only one of them can satisfy the spatial distances between the plurality of resistor elements R1 to R14 and R15 to R28; A lower case 250 that does not have the first support rib group LB1 and the second support rib group LB2 is used, or an upper case 230 that does not have the first insertion rib group RB1 and the second insertion rib group RB2 is used. , the first supporting rib group LB1 and the second supporting rib group LB2.

Furthermore, in the above-described embodiment, a case where one circuit board 210 is used has been described, but the present invention is not limited to this, and the first resistance element group GR1 and the second resistance element group GR2 are respectively Two circuit boards provided separately may be used.

Furthermore, in the above-described embodiment, the case where the

output terminals

112 and 122 are connected to the measuring device via the

output cables

110 and 120 has been described, but the present invention is not limited to this, and the relay box 200 A male plug may be installed so as to protrude from the

output terminals

112, 122 of the measuring device, and the male plug may be directly connected to the input terminal of the measuring device.

DESCRIPTION OF SYMBOLS 1... Probe apparatus, 110, 120... Output cable, 112, 122... Output terminal, 200... Junction box, 111, 121... Probe terminal, 130, 140... Input terminal, 210... Circuit board, 230... Upper case (the other case), 250...lower case (one case), 270...box case, 213, 214...conductor patterns, R1 to R28...resistive elements, GR1...first resistor element group, GR2...second resistor element group, M1... Main slit S1 to S6 Sub-slit E1 to E4 Edge slit RB1 First insertion rib group RB2 Second insertion rib group mr1, mr2 Main rib sr1 to sr6 Sub-rib er1 to er4 Edge rib WR1 to WR3 Frame rib RB1t First support piece end face group RB2t Second support piece end face group cr1 Center rib LB1 First support rib group LB2 Second support rib group nr31 to nr35...longitudinal ribs, rr31 to rr35, rr41 to rr45...resistor element support ribs, resistor element support.

Claims

an input cable to which the probe terminal is connected;
an output terminal connected to a predetermined measuring device;
a relay box that reduces the voltage input through the probe terminal to a predetermined voltage level and then outputs the voltage from the output terminal to the measuring device,
The relay box is
one case and
the other case and
A circuit board disposed between the one case and the other case, formed with a plurality of slits, and having a plurality of resistor elements arranged in a wave shape so as to pass through the plurality of slits. and,
provided in the one case, the other case, or an intermediate member between the one case and the other case, the plurality of resistance elements of the circuit board so as to satisfy the spatial distance between the plurality of resistance elements; A probe device comprising: an insertion rib group comprising a plurality of ribs each inserted into a slit.
The other case has the insertion rib group,
2. The probe device according to claim 1, wherein said one case has a support rib group consisting of a plurality of ribs for supporting the back surface of said circuit board on which said resistance element is not mounted.
each rib of the insertion rib group has a support piece that contacts the circuit board without being inserted into the plurality of slits;
3. The probe device according to claim 2, wherein the circuit board is sandwiched between the support piece of the insertion rib group and the support rib group of the one case.
4. The probe apparatus according to claim 2, wherein said insertion rib group is arranged at a position of said other case that does not come into contact with said plurality of resistor elements arranged in said wave shape.
4. The probe device according to claim 2, wherein the support rib group supports a position of the circuit board facing the plurality of resistance elements from the back surface without facing the insertion rib group.
6. The probe apparatus according to claim 5, wherein each rib of said support rib group supports said back surface of said circuit board so as to fill a spatial distance between said plurality of resistive elements, like said insertion rib group.