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Measuring instrument

A measuring device and a technology for measuring values, which can be applied to measuring devices, electrical devices, mechanical devices, etc., and can solve problems such as difficulty in observation and power consumption.

Active Publication Date: 2009-05-13
MITUTOYO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, during the movement of the cursor, the last two digits of the measured value change moment by moment, and the illuminated display segment appears to rotate while the analog display part is flickering (on and off) at a high speed. Flickering on the analog display makes observation difficult and consumes power

Method used

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Examples

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Embodiment Construction

[0035] Hereinafter, an embodiment in which the measuring device of the present invention is applied to a vernier caliper will be described in detail with reference to the drawings.

[0036] FIG. 1 is a front view showing the vernier caliper of this embodiment. In FIG. 1, reference numeral 11 is a ruler body as a fixed member, and reference numeral 21 is a vernier as a movable member that is installed movably along the length direction of the ruler body 11.

[0037] The ruler body 11 is integrally provided with an inner jaw 12 and an outer jaw 13 on one end side in the longitudinal direction, respectively.

[0038] The vernier 21 is integrally provided at one end of the vernier 21 with an inner claw 22 that abuts against the inside of the object to be measured together with the inner claw 12 of the ruler body 11, and an inner claw that abuts against the outside of the object to be measured together with the outer claw 13接的Outside claws 23. In addition, a finger touch protrusion 24 ...

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PUM

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Abstract

A measuring instrument includes a detector that outputs a measured value, a digital display unit, an analog display unit having a plurality of display segments, and a display controller. The display controller includes: a tolerance range display unit that lights or blinks display segments corresponding to a preset tolerance range relative to a preset value; a first determiner that obtains a difference between the present value and a present measured value and determines whether the difference is within an analog display range wider than the tolerance range; a difference display unit that lights a display segment corresponding to the last one or the last two digits of the present measured value when the first determiner determines that the difference is within the analog display range; a second determiner that determines whether the difference is within the tolerance range; and an acceptance or rejection display unit that displays a result determined by the second determiner.

Description

Technical field [0001] The invention relates to a measuring device that detects and displays a measured value as an electrical signal. Specifically, it relates to a measuring device that can determine whether the measured value detected through the measurement is within a preset tolerance range in addition to being used for measurement. The measuring device can be used for, for example, a vernier caliper, a micrometer (dial gauge, dial indicator, dial indicator) and the like. Background technique [0002] For example, as types of micrometers, there are known analog display micrometers and digital display micrometers. The analog display micrometer converts the linear displacement of the spindle by means of a motion conversion mechanism, an amplifying mechanism, etc. For the rotary movement of the pointer, the measured value is read from the scale corresponding to the pointer; the digital display micrometer has a built-in encoder that detects the linear displacement of the shaft as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B3/20G01B7/00
CPCG01B3/205
Inventor 松宫贞行铃木干男林田秀二白石吉昭林伸行
Owner MITUTOYO CORP
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