Mitutoyo Corporation

Yoshiaki Shiraishi

Nobuyuki Hayashi

Kouji Sasaki

Sadayuki Matsumiya

Shigeru Ohtani

Osamu Saito

Yoshiro Asano

Shuji Hayashida

Masamichi Suzuki

Mikio Suzuki

Kenji Iwamoto

Seigo Takahashi

Rie Tanaka

Shingo Nishina

Tetsuro Kiriyama

Shuuji Hayashida

Takefumi Kiwada

Toshiharu Miyata

Masahiko Tachikake

Tetsuya Nakadoi

Yoshitaka Kuji

Caliper

A measuring instrument includes a display that displays measurements. The display is provided by an organic electroluminescent display device or an electronic paper including an assembly of organic EL (Electro-Luminescence) devices. Since the display is provided by the organic electroluminescent display device or an electronic paper including an assembly of organic electroluminescence devices, visibility of the display can be enhanced. Further, since the display can be used for various measuring instruments in common and the display design can be easily changed, production cost can be reduced.

Measuring instrument

To provide a measuring instrument having improved usability and viewability. A measuring instrument includes a touch panel display unit that receives an external input performed by physical contact and has a display function. In the touch panel display unit, a plurality of operation icons that are used to perform a complicated input operation as well as a measurement result are displayed. It is possible to provide a measuring instrument that is superior in terms of the usability and viewability. For example, a measurement mode can be selected by selecting and touching one of the plurality of operation icons displayed in the touch panel display unit.

Calipers

A constant-force device includes a first ratchet wheel mounted rotatably on a shaft and having first sawtoothed projections, a second ratchet wheel mounted on the shaft so as not to rotate relative to the shaft but to move along the shaft and having second sawtoothed projections opposed to the first sawtoothed projections, an intermediate ratchet wheel mounted on the shaft so as not only to rotate relative to the shaft but also to move along the shaft between the first ratchet wheel and the second ratchet wheel and having a pair of intermediate sawtoothed projections meshing with the first and second sawtoothed projections respectively, a biasing member configured to bias the second ratchet wheel towards the first ratchet wheel, and a lock mechanism configured to set the first and intermediate ratchet wheels in a connected or unconnected state.

Constant-force device and micrometer

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.

An output-attached measuring instrument has: a measuring instrument body ( ) having a circuit board ( ) for processing a measurement signal from a sensor as a measurement data, an output electrode ( ) for outputting the measurement data, and a connector hole ( ) in communication with the output electrode and opening to an outer surface; and a connection cable ( ) having a connector ( ) capable of attaching to and detaching from the connector hole on an end thereof for transmitting the measurement data obtained by the measuring instrument body to an external device, the connector having a projection ( ) capable of being plugged to and unplugged from the connector hole and a connector terminal ( ) exposed on a surface thereof, where an elastic connector ( ) having am electro-conductive portion for electrically connecting the connector terminal and the output electrode is accommodated in a space of the connector hole of the measuring instrument body and the elastic connector shuts the connector hole when the projection is unplugged from the connector hole and electrically connects the connector terminal and the output electrode through the electro-conductive portion when the projection is plugged into the connector hole.

Output-attached measuring instrument

In an electronic caliper, a detecting circuit detects displacement of a grid with respect to a scale, on the basis of a signal from a transducer A CPU displays the detected position on a display device . The CPU performs error detection on the transducer, only when the relative speed of the grid with respect the scale is zero, or becomes equal to or smaller than a predetermined value. Since error detection is performed only at a predetermined timing, power consumption can be reduced.

Position measuring device and error detecting method for the same, and electromagnetic induction position detecting device

A electromagnetic induction-type absolute position transducer according to the present invention has a plurality of scale loops functioning as coils. The scale loop has first and second loop portions and a connecting pattern portion which connects the corresponding first and second loop portions with each other. The first and second loop portions are arranged along the measuring axis at different wavelength intervals. At least part of the pattern widths constituting scale loops are gradually increased as the length of a connecting pattern portion becomes longer.

Scale loops for electromagnetic induction-type absolute position transducer

A measuring instrument includes a spindle ( ) provided to a body ( ), a sleeve ( ) movable in the same direction as the spindle and stoppable at a desired position, a connector ( ) for connecting the sleeve and the spindle and allowing relative movement of the sleeve and the spindle in the moving direction thereof by a predetermined stroke; a pressure spring ( ) accommodated in the sleeve for biasing the spindle in a direction for the spindle to abut to the workpiece through the connector, and a biasing force indicator ( ) for indicating the pressure spring.

Measuring instruments

An induction type transducer is formed at a substrate of a grid assembly which is disposed so as to be opposed to a scale. The surface of the substrate opposed to the scale is made flat, and even if a liquid enters from a gap between the grid and the scale, permeation of the liquid into the substrate is prevented.

Growing community of inventors

Kawasaki, Japan

Yoshiaki Shiraishi