JPS59163511A - Digital display measuring instrument - Google Patents

Abstract

PURPOSE:To make a device small in size and light in weight, and to execute very easily and conveniently a measuring operation and handling of a measuring instrument by constituting so that a preset value is set by a shifting operation of a shifting circuit. CONSTITUTION:A digital display measuring instrument 14 is fixed to a desired position in accordance with size of an object to be measured, on a base. The digital display measuring instrument 14 is provided with a contact 18 which contacts with an object to be measured 16, and is moved and varied in the axial direction, and a displacement quantity of this contact 18 is converted to an electric signal by an encoder 20. This encoder 20 is constituted of a well- known encoder such as a photoelectric type, an electrostatic capacity type, or a variable resistance type, etc. The electric signal from the encoder 20 is counted by a counting circuit 22, and this counting value is digitally displayed on a display part of a digital indicator 10. As for a large-sized object to be measured, which exceeds an effective stroke, its absolute measurement becomes impossible, but in order to eliminate such an inconvenience, a preset device 24 is provided on the device body, and the absolute measurement of a large-sized object to be measured is executed easily.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a digital display measuring instrument, and more particularly to a digital display measuring instrument in which a desired value can be preset.

Technical background Digital display measuring instruments that digitally display the measured values of objects to be measured are widely used in various manufacturing departments because they can eliminate individual errors in reading measured values and can read measured values quickly. It's being used.

This type of device has a preset device to perform absolute and comparative measurements of the object to be measured.Usually, this preset setting value is used as the measurement reference value, and the measurement displacement is added or subtracted from this to obtain the desired absolute and comparative measurements. Measurements are taken effectively.

PRIOR ART FIG. 1 shows a 7' I
The schematic configuration of the upper set position is shown, and the digital display 10
is provided with a digit selection button (not shown), a plurality of numerical value setters 12 corresponding to each display digit, or a plurality of preset buttons, and the measurement reference value is reset by operating the numerical value setter 12 for each digit. was.

However, in this type of device, as a result of arranging the numerical value setter 12 for each digit, the entire device becomes larger and heavier, making it difficult to operate the measuring device with one hand. The disadvantage is that the structure is complicated and handling is extremely troublesome.

OBJECTS OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide a digital display measuring instrument that is easy to operate by miniaturizing and simplifying the presetting device.

Structure of the Invention In order to achieve the above object, the present invention comprises: a contact element which is movably provided on a main body and comes into contact with an object to be measured; an encoder which outputs the amount of displacement of the contact element as an electrical signal; In a digital display measuring instrument comprising a counting circuit for counting, a digital display for digitally displaying the counted value, and a presetting device for presetting a measurement reference value, the presetting device is configured to control the lower digits of the display digits of the digital display. The present invention is characterized in that it has a reset input means for inputting a numerical value and a shift circuit for shifting the input numerical value to a desired higher order of display digits.

Embodiment FIG. 2 shows a block configuration of a digital display measuring instrument according to the present invention, and FIG. 3 shows a schematic external appearance of the device of the present invention, and the same members as those of the conventional device are designated by the same reference numerals. The explanation will be omitted.

In FIGS. 2 and 3, a digital display measuring instrument 14 according to the present invention is fixed to a base (not shown) at a desired position depending on the size of the object to be measured.

The digital display measuring instrument 14 is provided with a contact 18 which is moved in the axial direction by contacting the object 16 to be measured, and the amount of displacement of the contact 18 is converted into an electrical signal by an encoder 2°. The encoder 20 is constituted by a well-known encoder such as a photoelectric type, a capacitance type, or a variable resistance type.

The electrical signal from the encoder 20 is counted by a counting circuit 22, and this counted value is digitally displayed on the display section of the digital display 10.

Therefore, by reading this display value 5 times, the object to be measured 16
The absolute amount or comparative amount of is determined at off-duty time.

The displayed value is the contact 1 in the digital display measuring device 14.
However, the present invention solves this inconvenience. Instead, a preset device 24 is provided on the device/main body to facilitate absolute measurement of large objects to be measured.

The characteristic feature of the present invention is that the preset device for setting the measurement reference value has a unique configuration, thereby reducing the size of the measuring instrument and facilitating its operation and handling.

In this embodiment, the preset device 24 includes a preset input means 25 for inputting a numerical value into the lower digits of the display digits of the digital display 10, and a shift circuit 26 for shifting the input numerical value to a desired upper digit of the display digits. It has

The reset input means 25 comprises means for inputting a numerical value of a desired digit of the measurement reference value into the lower digits of the digital display 10 divided into a desired number.

The input numerical value is then shifted to a desired upper digit position by the shift action of the shift circuit 26. That is, a single shift button 28 is connected to the shift circuit 26, and the shift action is performed by operating this button.

Therefore, by repeating the above-mentioned numerical input operation and software operation, even for measurement reference values with a large number of digits, this value can be correctly reset on the display section of the digital display 10.

In this embodiment, this preset value is stored in the storage circuit 29 and can be read out as appropriate, eliminating the trouble of presetting this value each time a measurement is made. This preset value is output as a signal from the memory circuit 29 to the counting circuit 22, and it is possible to add or subtract the amount of force of the contactor 18 from the print value.

In this embodiment, as described above, the shift circuit 26
A shift command is given from a single shift button 28, and the input value from the precent input means is shifted to a desired finger position by a simple button operation.

In this way, in this embodiment, the single shift button 2
8, the structure of the preset operation section is simplified and erroneous operations can be effectively eliminated.

The display section of the digital display 10 in this embodiment is divided into desired digits; for example, the display section shown in FIG.
and an upper display finger unit 30b,
Furthermore, the display section shown in Figure 5 is formed by dividing each digit, and shifting the preset input value to the upper digit shifts the numerical value input to the lower digit to the upper digit in units of divided digits. It is done by

For example, when presetting the value "123.456" in the device shown in FIG.
The oJ number is displayed (Fig. 4(a)). In this case, ``rooo'' of the upper decimal point is the upper display digit unit) 30b
The decimal point "rooo" indicates the numerical value of the lower display digit unit 30a.

Next, by inputting the upper digit display "123" of the preset value to the lower display digit unit) 30a, the digital display 1
The numbers rooo and 123J are displayed on the display section 0 (FIG. 4(b)).

Next, when the shift button 28 is pressed, the displayed value is shifted to the upper display digit unit 30b, and the display on the display 10 becomes r 123.000 j (FIG. 4(C)).

Next, by inputting the lower three preset value ``456'' into the lower display digit unit 30a, the desired reset value of r 123.456 J will be set on the display. Figure 4(d)).

Fig. 5 shows that when the display part of the digital display 1o is divided into digits, the numerical value of the most significant digit of the preset value is inputted into the divided lowest display digit. ), this value can be shifted to 1 by operating button 28.
An example is shown in which a desired preset value (FIG. 5(f)) is set by repeating the input operation and shift operation 9 times, such as digit shifting (FIG. 5(b)). There is.

As described above, in this embodiment, the preset mode can be selected and designed as appropriate depending on the purpose of use.

Therefore, according to this embodiment, absolute measurement of a large object to be measured beyond the effective stroke range of the contactor 18 can be easily performed by utilizing the presetting device.

For example, while setting a reference dimension approximately equal to that of a large object to be measured using a block gauge, the digital display measuring instrument 14 is slid against the base and the contactor 18 is in pressure contact with the upper end surface of the block gauge. The digital display measuring instrument 14 is fixed to the base. In this state, the dimensions of the large object to be measured are measured by presetting the reference dimension values of the block quartz.

That is, by setting the large object to be measured at the measurement position, an amount corresponding to the dimensional difference between the block dart and the large object to be measured can be obtained as the amount of displacement of the contactor 18. Then, this displacement amount is added to or subtracted from the series reset value by the counting operation of the counting circuit 22, and the result is displayed on the digital display 1.
Displayed on the 0 display section. Therefore, by taking this displayed value, the absolute measured value of a large object to be measured that exceeds the effective stroke range of the contactor 18 can be easily obtained.

As described in detail, according to the present invention, as a result of the configuration in which the preset value is set by the shift action of the shift circuit,
The device can be miniaturized and quantified, measurement operations and handling of the measuring instrument are extremely easy and convenient, and erroneous operations can be effectively prevented.

[Brief explanation of drawings]

FIG. 1 is a preset configuration diagram of a conventional digital display measuring instrument, FIG. 2 is a block diagram of a digital display measuring instrument according to the present invention, and FIG. 3 is a schematic external view of a digital display measuring instrument according to the present invention. 4(a) to (d) are diagrams for explaining the preset effect when the display section is divided into units and the input numerical values in the lower digit display unit are shifted 5 times to the upper digit display unit. ) is an explanatory diagram of a preset operation showing an example in which the display section is divided into individual digits and numerical values input into the lower digits are sequentially shifted one by one to the upper digits. DESCRIPTION OF SYMBOLS 10... Digital display, 14... Digital display measuring device, 16... Measured object, 18... Contact, 20...
...Encoder, 22...Counting circuit, 24...
Preset device, 25... Input means, 26... Shift circuit, 2
8...Shift button, 30a...Lower display digit unit, 3Ub...Upper display digit unit. Agent: Patent attorney Yoshi 1) Kenji (and 1 other person)

Claims (1)

[Scope of Claims] (11) A contact that is movably provided on the main body and contacts the object to be measured, an encoder that outputs the amount of displacement of the contact as a comfort signal, and a counting circuit that counts the output signal of the encoder. , a digital display measuring device comprising a digital display for digitally displaying the counted value, and an IJ upper setting position for presetting a measurement reference value, the presetting device displays a numerical value in the lower digits of the display digits of the digital display. 1. A digital display measuring instrument comprising: a reset input means for manually inputting a value; and a shift circuit for shifting the input numerical value to a desired upper digit of the display digits. (2. In the device described in claim (1), the display section of the digital display is divided into a lower display digit unit and an upper display digit unit each consisting of a plurality of equal display digits, and the input is inputted by the preset input means. A digital display measuring device characterized in that the input values of the lower display digit units are shifted five times to the upper display digit units by a shift circuit. (3) The apparatus according to claim (1), further comprising a preset input means. A digital display measuring instrument characterized in that the side inputted to the lower digits of the digital display is sequentially shifted one digit at a time to the upper digits by a shift circuit. (4) Claims (11 to (3)) 2. The digital display measuring instrument according to any one of the above, wherein the shift circuit is provided with a single shift button, and the butane operation causes a carry shift of the !reset input value.