JPH0555075U - Measuring rod of electronic measuring instrument - Google Patents

Abstract

(57) [Summary] [Purpose] To enable reading of measured values and entry of measured values without changing the operation. A mechanical pencil body 11 having a metal portion 13 at a tip of a grip portion 12 and a core 14 which is electrically connected to the metal portion 13 protruding and retractable, and one end connected to the metal portion 13 and the other end. Is composed of a cord 2 connected to an electronic measuring device 1, and is characterized in that both the measurement and the description are performed by the mechanical pencil body 11.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a measuring rod of an electronic measuring instrument for measuring voltage, current and resistance using a lead of a mechanical pencil.

[0002]

[Prior Art]

 To measure voltage, current, and resistance, conventionally, as shown in FIG. 3, measuring rods 3, 3 are connected to the other ends of cords 2, 2 whose one end is connected to an electronic measuring device 1, and this measurement is performed. The two rods 3 and 3 are brought into contact with both ends of the DUT 4 such as an electronic component, the measured value on the display surface of the electronic measuring instrument 1 is visually observed, and the writing instrument 5 is used to record on the recording sheet 6 or the like. I am trying. FIG. 4 shows the details of the measuring rod 3. In FIG. 4, reference numeral 31 is an insulating rod, and a metal rod 32 is fixed to the tip side thereof, and the cord 2 is connected to this metal rod 32 to form a measuring rod 3.

[0003]

[Problems to be solved by the device]

 However, when taking a record, it was necessary to switch from the measuring rods 3, 3 to the writing instrument 5, and at this time, there was a case where the user searched for the writing instrument 5 or forgot the measured value during this time.

In order to solve these drawbacks, the present invention directly connects a measuring instrument from an electronic measuring instrument to a writing instrument (mechanical pencil), and switches reading and writing of measured values. The purpose is to be able to do without doing.

[0005]

[Means for Solving the Problems]

 The measuring rod of the electronic measuring instrument according to the present invention has a metal portion at the tip of the grip portion, and the lead which is electrically connected to the metal portion of the metal is connected to the mechanical pencil body in which the lead is projectable and retractable. It consists of a cord with one end connected to the part and the other end connected to the electronic measuring instrument.

[0006]

[Action]

 In the present invention, the core or metal part of the tip of the mechanical pencil is brought into contact with the measurement site for electrical measurement, and the measured value is recorded using the mechanical pencil.

[0007]

【Example】

 FIG. 1 is a view showing an embodiment of a measuring rod 10 of an electronic measuring instrument according to the present invention. 11 is a mechanical pencil body, and a grip portion 12 made of an insulating material, a metal portion 13, a core 14, and a core. It is composed of a storage case 15 and a cap 16. A connector 17 is electrically connected to the metal portion 13 via the cord 2. Reference numeral 18 is a soldering portion, and the connector 17 is connected to the electronic measuring instrument 1.

At the time of measurement, as shown in FIG. 2A, the measuring rod 10 of the present invention is used for at least one of the measuring rods, and both measuring rods 3 and 10 are prevented from electrically contacting each other to be measured. Contact 4 and measure.

In measurement, an error due to a difference in resistance value becomes a problem, but at the start of measurement, the tips of both measurement rods 3 and 10 are brought into contact with each other, and the measurement value at this point is corrected to zero. This solves the problem. After the measurement, the measured value is recorded on the recording sheet 6 by using the measuring rod 10 as shown in FIG.

Although the cord 2 is connected to the metal portion 13 in the present embodiment, a conductor may be used as the material of the lead storage case 15 of the mechanical pencil pen 11 to connect to the lead storage case 15. For example, the cord 2 can be connected to the opposite end of the metal part 13, which is not a hindrance when writing.

[0011]

[Effect of the device]

 As described above, the measuring rod of the electronic measuring instrument of the present invention has the metal part at the tip of the grip part, and the lead which is electrically connected to this metal part is a mechanical pen that can be projected and retracted. Since it is composed of a cord that has one end connected to the part that conducts to the core and the other end connected to the electronic measuring instrument, it becomes possible to perform two types of measurement and measurement value entry with one measuring rod. Since there is no need to change hands, the measurement time is shortened and it is possible to prevent forgetting measurement values.

[Brief description of drawings]

FIG. 1 is a schematic side view with a partial cross section showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram at the time of measurement and at the time of entering a measurement value according to the embodiment of FIG.

FIG. 3 is an explanatory view of a conventional measuring method using a measuring rod.

FIG. 4 is a schematic perspective view showing the structure of a conventional measuring rod.

[Explanation of symbols] 1 electronic measuring instrument 2 code 3 measuring rod 4 object to be measured 5 writing instrument 6 recording paper 10 measuring rod of electronic measuring instrument 11 mechanical pencil body 12 gripping part 13 metal part 14 core 15 core storage case 16 Cap 17 Connector 18 Soldering part

Claims (1)

[Scope of utility model registration request] 1. A mechanical pencil pen having a metal portion at a tip of a grip portion, and a core electrically conducting to the metal portion protruding and retractable, and one end connected to a portion electrically conducting to the core and the other end. And a cord connected to the electronic measuring instrument, the measuring rod of the electronic measuring instrument.