JPH0449583Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to an electrical connection device used for electrical measurement.

(Prior Art) In electrical measurements, a measuring rod with a sharp tip or a clip for grasping the object to be measured is often used to electrically connect a measuring device such as a tester or oscilloscope to the object to be measured.

In the case of a tester, a measuring rod called a tester rod as shown in FIG. 1A is used.

To use a measuring stick, hold one measuring stick with one hand and touch the tip to the measuring point, and use the other hand to touch the other measuring stick.
Electrical measurements are taken by touching the measurement stick of the book to other measurement points.

Also, electrical measurements may be made between two nearby points by holding two measuring sticks in one hand like chopsticks. In both cases, the measurer supported the measuring rod during the measurement.

When measuring for a long time or when I cannot use my hands, I often use a clip to grasp the object to be measured. When using a clip, as shown in Figure 1B, a lead wire with clips connected to both ends was prepared, and electrical connections were made by using each clip to grasp the measuring rod and the measurement point.

In either case, the tester rod and the clip were each separated as a single unit, and the measurement work was carried out by attaching and detaching both each time.

(Problems to be solved by the invention) When the measuring rod and the clip were connected as shown in Figure 1, the connection between the tip of the measuring rod and the clip was unstable and easily came off, making the work time consuming and difficult. The conductive part of the connection part is exposed and could come into contact with surrounding conductors and cause unexpected accidents.During measurements, excess lead wires tend to gather at the measurement point and clutter the surrounding area.

Lead wires with clips are often lost because they are separated from the measuring rod and placed around the workplace or stored in tool boxes, etc., and it takes time to find them among similar parts and tools.

The object of the present invention is to provide a measuring instrument that does not have the above-mentioned drawbacks.

(Means for solving the problem) A measuring rod having a measuring needle at one end and a clip at the other end is slidably inserted into the hollow cover, and both are fixed between the measuring rod and the hollow cover. The measuring rod is provided with a stopper for adjusting the measuring rod, and the measuring rod has an operation button projecting through the groove of the hollow cover.

(Function) To use it as a measuring needle, move the operating button to the measuring needle side, protrude the measuring needle from the hollow cover, and fix the measuring stick and hollow cover with the stopper by operating the operating button.

In this state, measure using the measuring needle.

To use the clip, operate the operating button to release the stopper and slide the operating button along the groove toward the clip, and the measuring needle is housed in the hollow cover. At the same time, the clip comes out from the opposite side. In this state, grasp the object to be measured with a clip and perform the measurement.

(Example) An example of this invention will be described with reference to the drawings.

First Embodiment As shown in FIG. 3, a measuring rod 2 to which a measuring needle 3 and a clip 4 are connected is inserted into a hollow cover 1.

The stopper consists of a stopper 6a fixed to the measuring rod 2 and elastic in the outward direction, and a stopper hole 6b provided in the hollow cover 1 that engages with the stopper 6a. An operation button 5 is provided near the stopper for separating the stopper and sliding the measuring rod.

The stopper, operation button, elastic part, and measuring rod may be integrally molded, or each may be fixed with adhesive or screws, or may be combined.

The measuring rod 2 is slidable within the hollow cover 1. When the operating button 5 is held down and pushed in the direction of the measuring needle, the measuring rod moves, the measuring needle projects, and the stopper 6a elastically enters the stopper hole 6b so that they are fixed to each other.

When the operating button is pressed to remove the stopper and pull it toward the clip along the groove 7, the measuring needle is housed in the hollow cover and the clip is pushed out by the measuring rod.

The measuring needle 3 is fixed to the measuring rod 2 by screws, press-fitting, soldering, etc., and is electrically connected to an external lead 9.

The clip 4 is connected to the measuring rod 2 by a lead wire or the like, and is electrically connected to an external lead 9.

The clip and the measuring rod may be integrated, and the clip does not have to be a flange clip as long as it can grasp the object to be measured, such as an IC clip.

Second Embodiment As shown in FIGS. 5 and 6, the stopper is a screw that also serves as an operation button.

A measuring rod 12 with a female thread is inserted into the hollow cover 11 provided with a groove 17, and a stopper 16 with a male thread is attached.

As shown in Figures 5 and 6, when the stopper is tightened with the measuring needle out, the hollow cover and the measuring rod are fixed to each other and the measuring needle 13 can be used.When the stopper is loosened and the measuring needle is stored inside the hollow cover. The clip comes out from the hollow cover as shown by the two-dot chain line in FIG. 5, and the measurement can be performed using the clip 14.

The method of fixing the hollow cover and the measuring rod with screws is not limited to the above-mentioned method, but the stopper and the operation button may be separated and the hollow cover and the measuring rod may be fixed in the third embodiment.As shown in FIG. It is a combination of a pin that also serves as an operation button and an L-shaped groove.

Hollow cover 2 provided with an L-shaped groove formed by continuous linear groove 27 and circumferential stopper groove 26b.
1, insert the measuring rod 22 having a stopper attachment part, and fix the stopper 26a to the measuring rod 22. To use the measuring needle, insert the stopper 26a fixed to the measuring rod 22 into the groove as shown in FIG. 27 and rotated as shown by the arrow in FIG. 8 and inserted into the stopper groove 26b, the hollow cover 21 and the measuring rod 22 are fixed so that they cannot move in the longitudinal direction.

Reliable fixing can be achieved by reducing the gap between the stopper groove 26b and the stopper 26a.

To use the clip, when the stopper 26a is removed from the stopper groove 26b and pulled back in the direction of the clip, the measuring needle 23 is retracted and the clip comes out as shown by the two-dot chain line, allowing the clip 24 to be used.

Both the measuring needle and the clip are electrically connected to an external lead 29.

(Effects of the invention) To use the measuring stick according to the invention, connect the external lead to a measuring device and select either a measuring needle or a clip depending on the shape of the measuring point and the purpose of measurement.

When using the measuring needle, operate the operating button or stopper as shown in FIG. 2 to bring out the measuring needle and fix the measuring stick to the hollow cover.

When using the clip, operate the operating button or stopper to release the hollow cover from the measuring rod, and insert the measuring needle into the hollow cover as shown in FIG. At the same time, the clip comes out from the hollow cover. In this state, measure using the clip. As described above, one measuring tool can be used as a measuring rod or a clip, and there is no need to prepare two measuring tools.

Switching is quick and easy just by operating the control panel, and can be operated with one hand.

The measuring needle and the clip are connected, so when one is used, the other is always stored inside the cover. Therefore, the operator will not receive an electric shock during the measurement, and the conductive part of the measuring tool will not come into contact with the conductive part of the object to be measured, causing a short circuit accident.

Although the tip of the measuring needle is sharp, it is covered with a sturdy cover when not in use, so it will not cause any injury to the human body.

The measuring needle and clip are always integrated, so you can work efficiently without having to look for them or lose them. It is compact and does not take up much space and is convenient for storage.

[Brief explanation of the drawing]

FIG. 1: An explanatory diagram showing a conventional usage example. Figure 2...
FIG. 3 is a plan view showing a state in which the measuring needle of the first embodiment is taken out.
FIG. 3: A sectional view of FIG. 2. FIG. 4: A plan view showing a state in which the measuring needle of the first embodiment is housed and the clip is taken out. FIG. 5: A plan view showing the measuring needle of the second embodiment in a state where it is taken out, and a two-dot chain line is an imaginary view showing a state in which the clip is taken out. Figure 6...Cross-sectional view of Figure 5, Figure 7...
A plan view showing a state in which the measuring needle of the third embodiment is taken out,
The two-dot chain line is an imaginary diagram showing the state in which the clip is taken out.
FIG. 8...C-C sectional view of FIG. 7. 1, 11, 21...Hollow cover, 2, 12, 2
2... Measuring rod, 3, 13, 23... Measuring needle, 4,
14, 24...Clip, 5...Operation button, 6a...
...Stopper, 6b...Stopper hole, 16...Stopper, 26a...Stopper, 26b...Stopper groove, 7, 17, 27...Groove, 8, 18...Connection lead, 9, 19, 29...External Lead.

Claims (1)

[Scope of utility model registration request] A measuring rod having a measuring needle at one end and a clip at the other end is slidably inserted into the hollow cover, a stopper is provided between the measuring rod and the hollow cover for fixing both, and the measuring rod is slidably inserted into the hollow cover. A measuring rod with a clip, characterized in that the rod has an operation button protruding through the groove of the hollow cover.