JPH0540455Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a tool that pierces a covered wire with a probe in order to measure the voltage, etc. of the wire.

<Prior art> When measuring the voltage of wiring in an automobile, if the connector etc. are surrounded by a cover, it is necessary to remove the cover and insert the energizing contact of the measuring device into the connector where the voltage is applied. be.

In order to eliminate such troublesome work, an alligator clip having needle-like contacts was proposed in Japanese Utility Model Application No. 13654/1983.

In this device, a covered wire is held by the alligator mouth of the clip, and at the same time, a needle-like contact is inserted into the covered wire to extract the current.

<Problems to be Solved by the Invention> The conventional clip described above has the advantage of being able to extract voltage while remaining in the wiring state.

By the way, automobiles have many wires, and in order to measure the voltage of these wires at the same time, it is necessary to attach many clips to the wires. Therefore, in densely interconnected areas, the clips may interfere with each other and cannot be clamped together due to space constraints, which also increases costs.

<Means for Solving the Problems> The present invention provides a tool that improves the above-mentioned conventional problems, and its characteristic structure is that it can be opened and closed using a hinge as a fulcrum in order to grip a covered electric wire. A supporting member is provided at the hinge of the tool body having a pair of clamping parts and a handle, and the operating shaft is movable forward and backward between the clamping parts in the axial direction perpendicular to the hinge axis on this support member. A probe holder is provided at the tip of the operating shaft, and the levers are pivotally connected to each of the pair of handles so as to be rotatable by applying an elastic force in the opening direction. A leaf spring is attached to the rear end of the operating shaft to move the operating shaft forward.

<Function> With the above-described structure, the present invention sets a probe such as a conductive thumbtack or insect pin in the probe holder at the operating tip, positions the covered wire between the clamping parts, and squeezes the lever. As a result, the leaf spring between the two levers is bent and deformed in the direction of the clamping part, and the leaf spring pushes the rear end of the actuating shaft to advance the actuating shaft, causing the probe needle set in the probe holder to pierce the covered wire. Touch the tip of the needle to the live wire. Thereafter, by releasing the grip on the lever and separating the tool body from the covered wire, the probe is detached from the probe holder and left behind stuck in the covered wire.

<Example> Hereinafter, an example of the present invention will be described based on the drawings. In FIG. 1, 1 is a tool body. This tool body 1 is a cylindrical piece having a pair of handles 2a, 2b which are pivotally connected to each other by a hinge 3 so as to be openable and closable, and gripping parts 4a, 4b on the distal end side of the handles 2a, 2b from the hinge 3. .

A support member 5 as shown in FIG. 2 is fixed to the hinge 3 of the tool body 1, and the operating shaft 6 is attached to the support member 5 in the axial direction perpendicular to the axis of the hinge 3. , 4b so as to be movable forward and backward.

A probe holder 7 is provided at the tip of the operating shaft 6, and a thumbtack-shaped probe 8 is removably held therein. The probe holder 7 may be detachably attached to the operating shaft 6 with a screw or the like, and may be replaced with a probe holder 7a corresponding to an insect pin-shaped probe 8a, as shown in FIG.

Further, levers 9a, 9 are provided on the handles 2a, 2b.
b is rotatably pivotally connected, and the spring 10
An elastic force is always applied in the opening direction by a and 10b. A leaf spring 11 is attached between the levers 9a and 9b so as to be bent toward the tip of the tool body 1.

Furthermore, the protruding rods 12 of the probes 8, 8a may be inserted vertically into the operating shaft 6 as required. In this case, the operating shaft 6 is a hollow shaft, through which the ejector rod 12 is inserted, and the rear end of the ejector rod 12 passes through the leaf spring 11 and projects to the rear of the leaf spring 11.

Next, the method of using the present invention will be explained with reference to FIG. First, the probe 8 is set in the probe holder 7. In this case, the tip of the probe 8 is directed toward the clamping portions 4a and 4b. Then, bring the tool body 1 to the wiring section of the covered electric wire 13 shown in FIG. 5, and as shown in FIG.
A covered electric wire 13 is positioned between them.

Next, when the levers 9a and 9b are squeezed, the handles 2a and 2b are initially moved in the closing direction by the elastic force of the springs 10a and 10b in the opening direction, and the clamping parts 4a and 4b are closed to clamp and fix the covered wire 13. do. After that, the levers 9a and 9b are moved to the spring 10.
It rotates in the closing direction against the elastic force of a and 10b. As a result, as shown in FIG. 4B, the leaf spring 1
1 bends forward and pushes the rear end of the actuating shaft 6 to move the actuating shaft 6 forward. This forward movement of the actuating shaft 6 causes the needle of the probe 8 held in the probe holder 7 to pierce the covered wire 13 held between the clamping parts 4a and 4b, penetrate through the sheathing, and come into contact with the current-carrying wire.

Now, by opening the grips of the levers 9a and 9b, the bent and deformed leaf spring 11 is restored to its original state, as shown in FIG. 4C. Then, by pulling the tool body 1 backward in this state, the coated electric wire 1
The probe 8 stuck in the probe holder 7
It separates and remains on the covered wire side. Incidentally, as shown in FIG. 4D, by pushing the ejector rod 12 forward, the probe 8 can be more securely removed.

Connect probe 8 to multiple wires as described above.
This is used to pierce a hole and connect it to a voltage measuring device using a lead wire to perform simultaneous multi-point measurements.

<Effects of the invention> As described above, the tool of the invention allows a thumbtack-shaped or insect pin-shaped probe to be reliably pierced into a covered wire, and does not require a large amount of installation space like conventional clips. Simultaneous voltage measurement of multiple wires can be achieved, improving the efficiency of measurement work. In addition, the operation is very simple because the probe is stabbed and the covered wire is fixed with a single action of squeezing the lever.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the tool according to the present invention, Fig. 2 is a perspective view of the operating shaft, Fig. 3 is a sectional view showing another embodiment of the probe and probe holder, and Fig. 4 is an explanation of the procedure for piercing the probe. FIG. 5 is an explanatory diagram showing a wiring row of covered electric wires into which a probe is pierced by the tool of the present invention. 1... Tool body, 2a, 2b... Handle, 3... Hinge, 4a, 4b... Holding part, 5... Support member,
6... Operating axis, 7, 7a... Probe holder,
8, 8a...probe, 9a, 9b...lever,
10a, 10b...spring, 11...plate spring, 12...extrusion rod, 13...covered electric wire.

Claims (1)

[Scope of utility model registration request] A support member is provided at the hinge of the tool body, which has a handle and a pair of clamping parts that can be opened and closed using the hinge as a fulcrum in order to grip the insulated wire, and the operating axis is set perpendicular to the hinge axis on this support member. a probe holder is provided at the tip of the operating shaft;
The levers are pivotally connected to each of the pair of handles so as to be rotatable by applying elastic force in the opening direction, and the levers are bent and deformed to abut the rear end of the operating shaft to advance the operating shaft. A probe piercing tool characterized by being equipped with a moving leaf spring.