JPH08136581A - Voltage measuring utensil - Google Patents

Abstract

PURPOSE: To provide a voltage measuring utensil by which the voltage of a battery or the like can be measured easily. CONSTITUTION: A pair of covered lead wires 2, 3 to be connected to a voltmeter are inserted into, and housed in, a gripping tube 1. Their insertion ends are connected to a pair of covered lead wires 5, 6 for measurement. Base parts 5a, 6a of the pair of covered lead wires 5, 6 for measurement are supported by the front end part 1a of the gripping tube 1. The pair of covered lead wires 5, 6 are derived from the gripping tube 1 toward the front. A pair of contactors 8, 9 are arranged and installed at tip parts of derivation parts 5b, 6b so as to keep an interval S which is identical to the interval between a positive terminal and a negative terminal for a battery to be measured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a voltage measuring tool for an object to be measured having positive and negative terminals such as a storage battery.

[0002]

2. Description of the Related Art Conventionally, a measuring tool A as shown in FIG. 8 has been used to measure the voltage between the positive and negative terminals of other electric equipment such as a storage battery as an object to be measured. That is, the measuring tool A is composed of a pair of test rods A1 and A1, and the terminal portions of a pair of covered lead wires A2 and A2 leading out from the test rods A1 and A1 are connected to the positive and negative terminals of a voltmeter B, respectively. Hold the test rods A1 and A1 with both hands, and apply the contacts A3 and A3 protruding from the front ends of the test rods A1 and A1 to the positive and negative terminals of an object to be measured such as a storage battery. It is common to have Further, as an improved type of this type, one in which the pair of test rods can be operated with one hand is disclosed in Japanese Utility Model Publication No. 58-112966.

[0003]

However, in any of the above cases, since the voltage measuring tool is composed of a pair of test rods which are separated from each other, the voltage measuring tool depends on the distance between the positive and negative terminals of the object to be measured. It is troublesome for the operator to operate the pair of test rods with both hands, and when operating with one hand, one test rod must be operated with fingers. In some cases, it may be difficult to direct the object to be measured to the positive and negative terminals and the measurement may be inaccurate. Further, in particular, as shown in FIG. 9, when a large number of cubicle built-in storage batteries are measured, for example, the voltages of the storage batteries D, D, ... In that case, the pair of test rods A1 and A1 must be grasped with both hands or one hand, and the hand must be inserted all the way to the inner part of the box to make the measurement. If the height space is narrow, it becomes difficult to insert it, and the test rod A1,
The hand holding A1 is very close to the contactor, which is dangerous. In addition, there are inconveniences such as a limited hand insertion.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the inconvenience of operating each of the above-mentioned conventional pair of test rods, and the like, by simply holding one gripping rod with one hand, an object to be measured such as a battery. The present invention provides a measuring tool capable of easily measuring a voltage, in which a pair of coated lead wires to be connected to the positive and negative terminals of a voltmeter are inserted and housed in a single gripping cylinder, and the pair of insertion ends are housed. While connecting the parts to the bases of the pair of measuring coated lead wires, the bases of the pair of measuring coated lead wires are supported by the front ends of the gripping cylinders, and the desired lengths from the front end of the gripping cylinders to the front side. A pair of contacts are arranged at the tip of the lead-out portion of the pair of measuring coated lead wires that have been led out at a distance substantially the same as the distance between the positive and negative terminals of the DUT. And

[0005]

In the voltage measuring instrument of the present invention, a pair of covered lead wires extending rearward are connected to the positive and negative terminals of the voltmeter, and
The voltage can be easily measured by gripping the holding cylinder of a book with one hand and applying a pair of contacts at its tip to the positive and negative terminals of a predetermined object such as a storage battery.

In this case, when the space fixing spacer is fitted on the pair of contacts, the pair of contacts can be stably protected and the predetermined space between the contacts can be secured immovably. , It can be applied to the positive and negative terminals of a predetermined DUT in a correct and stable state.

When an elastic supporting member is fitted to the front end of the gripping cylinder and the parallel bases of the pair of measuring coated lead wires are fitted into the pair of insertion holes formed in the elastic supporting member, the pair of elastically supporting members are inserted into the pair of insertion holes. The elastic support member can absorb the shock applied when the contactor is applied to the positive and negative terminals of the object to be measured.

Further, the lead-out wire portions of the pair of measuring lead wires are formed into an open leg shape in which the distance between them is widened from the parallel base side to the front side, and the tips thereof are positive and negative. When the legs are opened at substantially the same distance as the terminals, the distance between the pair of contacts at the tip can be arranged so as to match the distance between the positive and negative terminals of the object to be measured.

In this case, when arranging the pair of contacts at the tip portions which are bent at right angles or substantially right angles with respect to the open leg portions and are parallel to each other, when holding the grip cylinder horizontally,
The pair of contacts can be directed downward, and the contacts can be brought into contact with the upper surfaces of the positive and negative terminals to be measured, so that the measurement can be easily and favorably performed.

Further, the lead-out portions of the pair of measuring coated lead wires are set so that the distance between the pair of contactors at the tips thereof corresponds to the distance between the positive and negative terminals of the object to be measured. In order to adjust the distance so that it can be adjusted, the distance between the pair of contacts at the tip should be measured according to the distance between the positive and negative terminals of the DUT with different distances between the positive and negative terminals. Is possible with one voltage measuring tool.

The openable structure is such that, in the lead-out portion of the measurement coated lead wire, the lead wire is composed of a Maekawa lead wire and a rear lead wire, and these lead wires are riveted by rivets. When connecting a part of the synthetic resin tube covering the shaft to the bellows-like part in the outer peripheral covering part of the connecting part, the pair of lead-out parts are manually pulled out. Each of the parts can be manually rotated to the left or right to set the distance between the pair of contacts at the tip thereof to the desired distance to be measured.

Further, when a plurality of the spacers for fixing the gap are prepared and prepared, each having a pair of fitting holes having different gaps according to predetermined gaps between the pair of contacts, It is possible to select one that matches the spacing between each pair of contactors, fit this into the pair of contactors with the pair of fitting holes, and fix the spacing between the contactors, respectively. It is possible to provide stable and highly reliable voltage measuring tools that are mechanically reinforced.

Further, when the gripping cylinder is constructed as a telescopic gripping cylinder composed of at least two telescopically connected telescopically, the gripping cylinder can be expanded and contracted according to the use situation and used in a desired length, which is convenient. Is.

[0014]

Next, embodiments of the present invention will be described. 1 to 4 show an example of a voltage measuring tool according to the present invention. According to the invention, the desired length, for example 300-400 mm in length
A cylindrical holding cylinder 1 made of a synthetic resin pipe, for example, a vinyl chloride resin, having an outer diameter of about 25 mm is prepared.
The gripping cylinder 1 may of course have any shape such as a rectangular cylinder, and its thickness can be appropriately selected and manufactured. According to the present invention, a voltmeter at one end, such as the one shown in FIG.
The digital voltmeter B shown has positive and negative terminals fitted and contacted with the positive and negative terminals, and has a desired length, for example, 600 to 7.
By inserting and accommodating a pair of ordinary coated lead wires 2 and 3 of about 00 mm and gripping this one gripping cylinder 1, the pair of coated lead wires 2 and 3 can be held.
A cylindrical cap-shaped lid 4 fitted and adhered to the rear end portion of the grip cylinder 1 with an adhesive is provided, and the pair of the above-mentioned pair of caps is provided through an insertion hole provided in a top wall of the lid 4. The coated lead wires 2 and 3 were inserted to be housed in the grip cylinder 1. The coated lead wires 2 and 3 are preferably produced by coating the coated synthetic resin tube with different colors of red and black.

The insertion ends of the pair of coated lead wires 2 and 3 are
It is located on the front end side of the grip cylinder 1 and is electrically connected by soldering to the base portions 5a and 5b of the separately prepared desired length covered coating lead wires 5 and 6 of about 100 to 200 mm, and the connection is made. The insulating tape 7 is wrapped around the outer periphery of the portion to cover it.

The pair of measuring lead wires 5, 6 must be brought into contact with the positive and negative terminals in order to measure the voltage between the positive and negative terminals of a storage battery or other object to be measured. Therefore, a wire having a mechanical strength that does not easily bend when it comes into contact, for example, a wire having a diameter of 1 to several mm,
A lead wire a made of a metal wire such as a metal rod is preferably covered with a tube b made of synthetic resin. In the illustrated example, a lead wire a made of a nickel-plated copper wire having a diameter of 4.5 mm is covered with a synthetic resin tube b of polypropylene having a thickness of 2.5 mm, excluding its tip, to provide a measurement lead wire. 5, 6 and the pair of tips has a thick positive and negative contactor 7 having a sharpened tip and a diameter of 4.5 mm.
8 is formed. The coated tubes b, b of the pair of coated coated lead wires 5, 6 may be colored in red and black.

Thus, according to the present invention, the pair of measuring lead wires 5 and 6 have the pair of base portions 5a and 6a supported by the front end portion 1a of the gripping cylinder 1, and the front end of the gripping cylinder 1 is supported. Derivation parts 5b, 6 derived from the part 1a to the front by a desired length
The voltage measuring tool of the present invention was constructed by disposing the pair of contacts 8 and 9 at the tip of b with a distance substantially the same as the distance between the positive and negative terminals of the object to be measured. .

More specifically, the front end portion 1a of the grip barrel 1 will be described.
A support member 10 made of synthetic resin or rubber, preferably,
An elastic support member 10 made of soft rubber is fitted, and a pair of through holes 10a, 10a provided in the support member 10 and parallel to each other are inserted into the pair of measuring coated lead wires 5, 6 described above. The lead-out portions 5b and 6b, into which the base portions 5a and 6a of the above are inserted and which are led out by a predetermined length from the front end portion 1a of the grip cylinder 1,
After being slightly parallel to each other on the base portions 5a and 6a side, the base portions 5a and 6a are formed into an open leg shape in which the distance gradually increases toward the tip, and the distance S between the tip portions is a positive value of a specific storage battery or other electric device. The spacing was substantially the same as the spacing between the negative terminals.
In the illustrated example, the lead-out portions 5b, 6b of the pair of measuring coated lead wires 5, 6 are led out from the front end portion 1a of the grip barrel 1 to a desired length, for example, about 100 to 150 mm, and the open legs thereof are opened. The spacing S between the front ends of the battery-shaped portion is set to be substantially the same as the spacing between the positive and negative terminals of the specific storage battery to be measured, and the distance between the front ends of the open-leg portions is set to be different from each other at the tips thereof. A pair of contacts 8 and 9 are arranged in parallel with the above-mentioned interval S, and in the example shown in the figure, with an interval S of 82 mm, to constitute the voltage measuring device of the present invention. Thus, in order to measure the predetermined voltage of the storage battery using the voltage measuring tool of the present invention, the grip cylinder 1 is grasped with one hand, and the pair of contacts 8, 9 at the tip thereof.
Need only be applied to the positive and negative terminals of the storage battery, which eliminates the conventional trouble of holding and measuring a pair of different test rods by hand. Needless to say, for the measurement, the positive and negative connection terminals 2a and 3a of the pair of covered lead wires 2 and 3 extending rearward from the grip cylinder 1 are connected to the positive and negative terminals of the voltmeter B, respectively. .

In order to manufacture the respective voltage measuring tools for measuring the voltages of various storage batteries having the distance between the positive and negative terminals of 82 mm or more, the pair of measuring coated lead wires 5 and 6 are prepared.
The open leg-shaped portions of the lead-out portions 5b and 6b may be manufactured in accordance with the interval (span) between the positive and negative terminals of the respective storage batteries to be measured.

As shown in FIG. 2, the pair of lead-out portions are formed by bending the front end portions of the pair of open leg portions at right angles and forming a pair of contactors 8 and 9 parallel to each other at their tips. In the case where the voltage measuring tool is provided with, the pair of contacts 8 and 9 bent at a right angle can be directed vertically downward when gripping and holding horizontally. The positive and negative terminals of the storage battery to be measured can be applied from above so that the measurement can be performed properly and easily.

The gripping cylinder 1 may be made to have an appropriate diameter by integrally extruding the same diameter up to the front end portion 1a, but in the illustrated example, the outer diameter is about 20 mm and it is relatively thin and easy to grip. On the other hand, the front end portion 1a may have a small diameter, and the front end portion 1a may be separately molded and have a larger diameter than that, and may have a square or circular shape and be fitted and bonded to the main body of the holding cylinder 1. In the illustrated example, the front end portion 1a is a support member 1 for supporting the parallel base portions 5a and 6a of the pair of measuring coated lead wires 5 and 6.
The tubular container 11 is formed in a relatively short tubular container 11 having a thickness and a cross-sectional area sufficient to fit the zero. In the illustrated example, 2
It is possible to construct one having a length of about 0 to 30 mm square and a length of about 20 mm by fitting it to the front end mounting portion of the circular gripping cylinder 1 main body through the circular fitting hole 11a in the bottom wall and fixing it with an adhesive. preferable. The material of the cylindrical container 11 is generally the same as that of the gripping cylinder 1, and the shape of the container is not limited to the rectangular shape and may be a circular shape. Thus, in the illustrated example, the rectangular parallelepiped elastic support member 10 shown in FIG. 3 is fitted into the front end opening portion of the cylindrical container 11 forming the front end portion 1a, and a pair of left and right portions thereof are fitted. The parallel base portions 5a and 6a of the measurement coated lead wires 5 and 6 are inserted into the insertion holes 10a and 10a, and the measurement melt coated lead wires 5 and 6 are supported by the support member 10.
Is to support.

Thus, a large number of pairs of measuring coated lead wires in which the distance S between the pair of contacts 8 and 9 is set for the measurement of objects to be measured such as various storage batteries in which the distance between the positive and negative terminals is greatly different. Even if the intervals between the base portions 5a and 6a of the members 5 and 6 are different from each other, a large number of cylindrical containers 11 having different thicknesses and cross-sectional areas according to the respective intervals are produced, and the respective corresponding thicknesses are prepared. By attaching to the main body of the gripping cylinder 1, it is possible to configure a dedicated voltage measuring tool suitable for measuring the voltage of each specific storage battery.

The voltage measuring device constructed as described above may be used as it is, but a constant space S between the pair of contacts 8 and 9 may be fixed at any time during storage or use. preferable. For this purpose, as shown in FIG.
There is the same space S'as the contacts 8, 9 and the contacts 8, 9
Fitting holes 12a, 12 having a diameter and shape suitable for fitting into
The space fixing spacer 12 provided with a is stored in a state of being fitted to the pair of contacts 8 and 9 as shown in FIGS.
Preference is given to using. As a result, the constant space S between the pair of contacts 8 and 9 can be kept immobile, the mechanical strength increases, the stability becomes robust, and good voltage measurement becomes possible, and the storage thereof can be made safe. . The space fixing spacer 12 shown in FIG. 4A is made of an electrically insulating material, usually,
It is made of synthetic resin and has a length of 100 mm.
A thin thin plate having a width of about 10 mm and a thickness of about 2 mm, and a pair of contacts 8 shown in FIG.
Approximately 4.5 mm with a spacing of 82 mm, the same as the spacing S between 9
A pair of mm fitting holes 12a, 12a are provided. As shown in FIG. 1 and FIG.
It is fitted in 9 and the interval S is fixed.

As described above, the distance between the positive and negative terminals of the DUT to be measured, for example, the storage battery, differs depending on the type of battery, and there are many that are larger or smaller than the aforementioned 82 mm interval. Therefore, the space S corresponding to these
Each of the voltage measuring tools provided with a pair of contactors 8 and 9 having different lengths is manufactured, fitted into each of the contactors, and a pair of fitting holes 12a corresponding to each of which the interval is to be fixed, 12a
A large number of spacers for fixing the intervals having different intervals S ′ are prepared and used. FIG. 4B shows the above-mentioned interval S ′ of 82 mm.
The space S'between the smaller fitting holes 12a and 12a also shows an example of the space fixing spacer. FIG. 4 (c) shows the space fixing having a space S'larger than the space S'of 82 mm. A spacer is shown.

FIG. 5 shows another embodiment of the present invention. In this embodiment, the voltage measuring tool of the present invention is configured so that the distance S between the pair of contacts 8 and 9 can be adjusted appropriately. That is, the pair of measuring lead wires 5 and 6 extending forward from the grip cylinder 1 are configured to be rotatable. That is, in the bent portion between the parallel portion on the base side and the open-leg-shaped portion that opens gradually toward the tip, each of the measuring coated lead wires 5 and 6 is moved to the left and right as shown by arrows. It is configured to be rotatable. The configuration is, for example, as clearly shown in FIG. 6, in which the lead wire a of the covered lead wire is composed of a front lead wire a1 and a rear lead wire a2, and these are connected by a rivet 13 to the shaft of the rivet. A part of the outer peripheral synthetic resin tube b that covers the lead wire a is formed in the bellows-like portion 14 in the outer peripheral covering portion of the connecting portion, which is rotatably connected right and left. Thus, the lead-out portions 5b and 6b of the pair of measuring coated lead wires 5 and 6 are opened and spread between the open leg portions in the direction of the arrow to the left or right by hand, respectively. Alternatively, the distance S between the pair of contacts 8 and 9 can be set to be narrow so that the distance S can be set according to the distance between the positive and negative terminals of the object to be measured. did. Thus, this single voltage measuring tool can be conveniently used for voltage measurement of many storage batteries having different positive and negative terminals.

As shown in the figure, the front side lead wire a1
And the opposite connecting end portion of the rear lead wire a2 is flattened into a plate shape as shown in the drawing, and the flattening portions 15 and 16 have the connecting end portion 1 thereof.
It is preferable that the 5a and 16a are overlapped and rotatably connected by the rivet 13. Further, as shown in the figure, the strip-shaped flattening portions 15 and 16 are bundles 17 of a large number of thin copper wires.
It is preferable to retain the good electrical conductivity of the interconnection part by holding, caulking and soldering.

FIG. 5 shows still another embodiment of the present invention. According to the present invention, the grip cylinder 1 is preferably configured as a telescopic grip cylinder in which a plurality of the grip cylinders 1 are telescopically connected. By doing so, it can be used by adjusting it to the desired length according to the usage conditions, and even if the storage battery housed in a deep box with a reach beyond reach is extended without inserting the hand. Easy to measure by inserting the tip of the telescopic gripping cylinder 1,
In addition, even when the hands cannot be inserted due to the narrow space for height between the storage batteries arranged above and below, it is possible to insert and measure.

FIG. 5 and FIG. 7 show an example of the construction of such a telescopic gripping cylinder, and two synthetic resin gripping cylinders 1 and 1 having different diameters are prepared. As described above, the small-diameter gripping cylinder 1 is slidably fitted into the rear end opening of the large-diameter gripping cylinder 1, and the threaded portion 18 is provided on the outer periphery of the rear end of the front-side gripping cylinder 1 at an appropriate position. Then, a cap-shaped screw member 19 fitted to the outer circumference of the rear side gripping cylinder 1 is tightened and fixed via a threaded portion 19a on the inner circumference thereof to obtain a telescopic gripping cylinder of a predetermined length. I chose In addition, on the outer peripheral surface of the front end portion of the rear side gripping cylinder 1, a small annular projection having an arcuate cross-section that engages with an abutting step portion 20 provided on the inner peripheral surface of the rear end of the front side gripping cylinder 1. Two
It is preferable to provide 1 so that both gripping cylinders 1, 1 do not separate from each other. Thus, in a state where both gripping cylinders 1 and 1 are extended or tightened to a desired length, they are tightened and set by the screw member 19, and a pair of covered lead wires 2 and 3 which are led out to the rear of the telescopic gripping cylinder, Negative terminal 2
a and 3a are connected to the positive and negative terminals of the voltmeter B, the grip cylinder is gripped with one hand, and the pair of connectors 8 and 9 preset at a predetermined interval at the tip of the grip cylinder are connected to the positive and negative terminals of a predetermined storage battery. ， By applying it to the negative terminal, the voltage can be measured with a simple operation. In particular, it is possible to easily measure the voltage of each of the storage batteries that are arranged in a plurality of rows in the front-rear direction and that are arranged in a plurality of rows in the up-and-down direction inside the cubicle by inserting the gripping cylinder 1 and inconveniently inserting the hand deeply. And the danger is eliminated. In the above embodiment, the two gripping cylinders 1, 1
However, it is of course possible to use a telescopic type voltage measuring tool in which a larger number of gripping cylinders are connected.

Needless to say, the voltage measuring device of the present invention can be used not only for the storage battery but also for measuring the voltage at the positive and negative terminals of other electric equipment.

[0030]

As described above, according to the present invention, a pair of coated lead wires are inserted and accommodated in the grip cylinder, and a pair of measuring coated lead wires connected to the insertion ends are supported by the front end portion of the grip cylinder. Since a pair of contacts are disposed at the tip of the lead-out portion of the pair of measuring coated lead wires derived from this, at a distance substantially the same as the distance between the positive and negative terminals of the battery to be measured,
When measuring the voltage of the battery, the battery voltage can be measured simply and easily by simply holding the gripping cylinder with one hand and applying the pair of contacts to the positive and negative terminals of the predetermined battery. In addition, the distance between the positive and negative terminals is different in one gripping cylinder by configuring the distance between the pair of contacts at the tip of the measurement coated lead wire that is drawn forward from the gripping cylinder to be adjustable. This is convenient because it is possible to measure the voltage of each of a plurality of types of batteries. In addition, by fitting a gap fixing member that fixes a predetermined gap between the pair of contacts to the pair of contacts, the gap between the pair of contacts is fixed, and a proper battery voltage is always measured. Is possible. Further, when a plurality of gripping cylinders are telescopically gripping cylinders that are elastically connected to each other, the gripping cylinders can be adjusted to an appropriate length according to the usage situation. Further, in particular, when measuring the voltage of each of the storage batteries arranged in multiple rows in the front-back direction in the box, it is not necessary to insert the hand deeply as in the conventional case, and the height space is narrow, It can be applied even when a hand cannot be put in, and the measurement can be easily performed by inserting only the gripping cylinder, and the risk at the time of conventional measurement work can be eliminated. Further, when the lead-out portion of the measuring coated lead wire is formed to have an open leg-like portion whose distance increases toward the front end, the distance between the positive and negative terminals of the respective DUTs should be adjusted accordingly. Each of the voltage measuring tools can be configured by adjusting the degree of spread of legs and leaving a space between a pair of contacts at the tip of the spread leg, while the base can be configured in parallel with a relatively narrow width. Therefore, it can be supported by a gripping cylinder that can be easily gripped by hand.

[Brief description of drawings]

FIG. 1 is a front view in which a part of a voltage measuring tool according to an embodiment of the present invention is cut away.

FIG. 2 is a side view of the voltage measuring tool.

FIG. 3 is a perspective view of a support member.

4 (a) (b) (c) are front views of various spacing fixing spacers.

FIG. 5 is a perspective view showing a voltage measuring tool according to another embodiment of the present invention with a part thereof cut away.

6 is a cross-sectional view taken along line VI-VI of the voltage measuring tool of FIG.

7 is a sectional view taken along line VII-VII in FIG.

FIG. 8 is a perspective view of a pair of conventional test rods and a voltmeter.

FIG. 9 (a) is a front view showing a battery array containing a cubicle.

FIG. 9 (b) is a cut side view showing a battery array containing the cubicle.

[Explanation of symbols]

1 Grip cylinder 1a Front end part 2,3 Coated lead wire 5,6 Coated lead wire for measurement 5a, 6a Base part 5b, 6b Derivation part 8,9 Connector 10 Support member 11 Cylindrical container 12 Spacer 12a, 12a Dowel 13 Rivets 14 Bellows 19 Cap-shaped screw members B Voltmeter S Interval

Claims (9)

[Claims] 1. A pair of coated lead wires to be connected to the positive and negative terminals of a voltmeter are inserted and housed in a single gripping cylinder, and the pair of insertion ends are provided at the bases of the pair of measured coated lead wires. While connecting, while supporting the base portion of the pair of measuring coated lead wires to the front end portion of the gripping cylinder, the pair of measuring coated lead wires having a desired length drawn forward from the front end portion of the gripping cylinder. A voltage measuring tool, wherein a pair of contacts are arranged at the tip of the lead-out portion at substantially the same distance as the distance between the positive and negative terminals of the DUT. 2. The voltage measuring device according to claim 1, wherein a space fixing spacer is fitted on the pair of contacts. 3. An elastic supporting member is fitted to the front end of the gripping cylinder, and parallel bases of the pair of measuring coated lead wires are inserted into a pair of insertion holes formed in the elastic supporting member. The voltage measuring tool according to claim 1, which is characterized in that. 4. The lead-out portion of the pair of measuring coated lead wires has an open-leg shape in which the distance between them extends from the parallel base side to the front side, and the tips thereof are positive and negative terminals of the object to be measured. 2. The voltage measuring device according to claim 1, wherein the legs are opened at substantially the same intervals. 5. The voltage measuring device according to claim 4, wherein the pair of contacts are provided at tip portions that are bent at right angles or substantially right angles with respect to the open leg portions and are parallel to each other. 6. The lead-out portion of the pair of measuring coated lead wires is set so that the distance between the pair of contactors at the tip portion thereof corresponds to the distance between the positive and negative terminals of the object to be measured. 2. It is configured so that the legs can be freely opened to obtain.
The voltage measuring tool described. 7. The lead wire of the measuring coated lead wire is composed of a front lead wire and a rear lead wire, and these lead wires are left and right around the axis of the rivet by rivets. 7. The voltage measuring device according to claim 6, wherein a part of the synthetic resin tube that covers the connection while being rotatably connected is formed in a bellows-like part in the outer peripheral covering part of the connecting part. 8. The spacer for fixing a gap is prepared by preparing a plurality of spacers each having a pair of fitting holes having different gaps according to a predetermined gap between the pair of contacts. The voltage measuring tool according to claim 2. 9. The voltage measuring device according to claim 1, wherein the gripping cylinder is a telescopic gripping cylinder including at least two gripping cylinders that are connected to each other in a stretchable manner.