JPH0443824Y2 - - Google Patents

Description

[Detailed description of the invention] <Field of industrial application> The present invention relates to an auxiliary tool for measuring leadless electronic components, particularly for measuring leadless electronic components such as resistive elements having terminal parts made of magnetic material at both ends. Concerning what is used for.

<Prior Art> In recent years, in order to increase the mounting density of printed wiring boards, electronic components such as resistive elements have often been made into leadless shapes. As shown in FIG. 2, many of these leadless electronic components have cap-shaped terminal portions 2 and 3 placed over both ends of an electronic component 1 such as a resistive element. In this case, the terminal parts 2 and 3 are mostly made of iron, and the surfaces thereof are plated with tin or the like. still,
4 is a color code indicating resistance value etc.

By the way, conventionally, when measuring this type of leadless electronic component 1 with a measuring instrument such as a tester, rod-shaped probes 5 and 6 as shown in FIG.
was used.

<Problems to be solved by the invention> However, when attempting to measure the leadless electronic component 1 using the conventional rod-shaped probes 5 and 6 as shown in FIG. Because the probes 5 and 6 become unstable due to the dampness, it is difficult to firmly press the tips of the probes 5 and 6 against the terminals 2 and 3 at both ends of the electronic component 1 while looking at the display on the measuring instrument. There was a problem that both hands were occupied when holding the 5 and 6, which was inconvenient.

The present invention solves the above-mentioned problems, and its purpose is to make measurements by making reliable contact with the terminals of leadless electronic components with simple operation using only one hand. To provide an auxiliary tool for measuring leadless electronic components, which enables the user to perform the measurement and also to keep both hands open during the measurement.

<Means for Solving the Problems> In order to achieve the above object, the present invention focuses on the fact that most leadless electronic components use iron, a magnetic material, as a material for their terminal parts.
A pair of measurement terminals made of conductive permanent magnets are provided on an electrically insulating table on which the terminals of leadless electronic components are placed, and a pair of measurement terminals are connected to each measurement terminal for connection to measuring instruments. with electrodes of
Constructs an auxiliary tool for measuring leadless electronic components.

<Function> In the leadless electronic component measurement aid with the above configuration, by placing the terminals at both ends of the leadless electronic component on the pair of measurement terminals, the terminals of the electronic component are placed on the measurement terminals. Magnetically attracted. Thereby, the electronic component is stably positioned even when its terminal portion is connected to the measurement terminal portion with a constant contact pressure. As a result, even with a simple operation using only one hand, the terminal portion of the leadless electronic component can be reliably brought into contact with the measurement terminal portion and measurement can be performed, and both hands can be kept open during the measurement.

<Embodiments> Hereinafter, preferred embodiments of the present invention will be described based on the drawings.

FIG. 1 shows an embodiment of the leadless electronic component measuring aid according to the present invention.

Auxiliary tool 1 for leadless electronic component measurement shown in the same figure
0 is for measuring a leadless electronic component 1 such as a resistive element having cap-shaped terminal portions 2 and 3 made of a magnetic material such as iron at both ends, and is placed on an electrically insulating plastic stand 11. , a pair of measurement terminal portions 1 on which surfaces 12A and 13A are formed on which the terminal portions 2 and 3 of the leadless electronic component 1 are placed;
It has 2,13. In addition, each measurement terminal section 12, 13 is entirely composed of a conductive alloy permanent magnet such as a rare earth magnet (for example, a cobalt-containing product). In addition, the pair of measurement terminal portions 1
The mounting surfaces 12A and 13A of Nos. 2 and 13 are inclined in directions facing each other.

Here, each measurement terminal section 12, 13 is embedded and fixed in an electrically insulating plastic base 11 while maintaining a constant distance from each other. Moreover, each measurement terminal part 12, 13 has an electromagnetic 14,
15 to a measuring device 20 such as a tester.

Now, the measuring aid 1 configured as above.
0, by placing the terminal parts 2 and 3 at both ends of the leadless electronic component 1 on the pair of measurement terminal parts 12 and 13, the terminal parts 2 and 3 of the electronic component 1 are placed on the measurement terminal parts 12 and 13. They are magnetically attracted to the mounting surfaces 12A and 13A, respectively. As a result, the electronic component 1 becomes
Even when the terminal portions 2 and 3 are connected to the measurement terminal portions 12 and 13 with a constant contact pressure, they are stably positioned. As a result, even with a simple operation using only one hand, the terminals 2 and 3 of the leadless electronic component 1 can be brought into reliable contact with the measurement terminals 12 and 13 to perform stable measurements. You can also open your hands.

Furthermore, by inclining the mounting surfaces 12A, 13A of the pair of measurement terminal parts 12, 13 in directions facing each other, the terminal parts 2, 3 of the electronic component 1 and the measurement terminal can be connected to each other, as shown in FIG. Part 1
The contact state between 2 and 13 can be made into a point contact state, thereby increasing the contact pressure of the contact portion and making it possible to obtain a more stable and reliable contact state. It will become more stable.

<Effects of the invention> As is clear from the description of the embodiments above, the leadless electronic component measuring aid according to the present invention can reliably contact the terminal portion of leadless electronic components even with simple operation with only one hand. It is possible to perform measurements by contacting the device, and also has the advantage of being able to open both hands during the measurement.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the leadless electronic component measuring aid according to the present invention, and FIG. 2 is a perspective view showing a conventional measuring method. 1... Leadless electronic component, 2, 3... Terminal section, 10... Leadless electronic component measurement aid,
11... Plastic stand, 12, 13... Measurement terminal part (permanent magnet), 12A, 13A... Placement surface,
14, 15...electrode, 20...measuring device.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A measurement aid for measuring a leadless electronic component having terminal portions made of magnetic material at both ends, the said leadless electronic component being placed on an electrically insulating table. A lead characterized in that it has a pair of measurement terminal parts made of conductive permanent magnets on which surfaces on which the respective terminal parts are placed, and an electrode for connecting a measuring device connected to each measurement terminal part. Auxiliary tool for measuring electronic components. (2) The leadless electronic component measuring aid according to claim 1, wherein the mounting surfaces of the pair of measurement terminal portions are inclined in directions facing each other.