Mitutoyo Corporation

Shuji Hayashida

Shigeru Ohtani

Yoshiro Asano

Shozaburo Tsuji

Yuji Fujikawa

Osamu Saito

Nobuyuki Hayashi

Sadayuki Matsumiya

Masahiko Tachikake

Rie Arai

Kenji Abiko

Kazuyuki Inose

Atsuya Niwano

Yoshiaki Shiraishi

Takefumi Kiwada

Yasuhiro Tsujimoto

Koji Matsumoto

Yuji Oura

Mikio Suzuki

Masamichi Suzuki

Aki Hiroshima

Keisuke Iori

Kouji Matsumoto

Takashi Komori

Junji Masui

The measurement apparatus includes an outer cylinder, a shaft body longitudinally movable on the inner surface side of the outer cylinder, a plurality of bearing balls disposed between an inner surface of the outer cylinder and an outer surface of the shaft body, and a measurement part that measures a relative position between the outer cylinder and the shaft body, and a first density of the bearing balls in a first area having a first length shorter than a total length of the outer cylinder in a longitudinal direction from one end of the outer cylinder is larger than a second density of the bearing balls in a second area having a second length shorter than the total length of the outer cylinder centered on a center position in the longitudinal direction of the outer cylinder.

Measurement apparatus and bearing

A connection unit for connecting an external device to a main device is provided. A connection unitincludes a main body partincluding a main connector terminalto be connected to a connection port of a main device, a sub body partincluding a sub connector terminalto be connected to a connection port of an external device, and an electric cableelectrically connecting the main connector terminalto the sub connector terminal. The main body partand the sub body partare united by engaging by an engaging means that is engageable and disengageable, and vary a relative position between the main body partand the sub body partby disengaging by the engaging means. The external device is electrically connected to the main device and is simultaneously attached to the main device by connecting the main device to the external device with the connection unitwhile the main body partand the sub body partare united.

Connection unit for connecting external device to measurement device

An external device is configured to be detachably attached to a measuring instrument via a connector. The external device includes a connector part, an external device body part and a movable connection part. The connector part has a connection terminal. The external device body part has a display part on a side surface of the external device body part. The movable connection part is configured to connect the connector part with the external device body part. The movable connection part is a biaxial rotation hinge having two pivot axes which are in a twisted position relationship with respect to each other.

External device for measuring instrument

A measuring instrument includes a measuring unit, an electric component unit and a pin jack. The electric component unit includes a signal processing part. The signal processing part is configured to calculate a measurement data based on a detection signal obtained by the measuring unit. The pin jack is provided in the electric component unit.

Measuring instrument

There is provided a connection unit for connecting an external device to a measurement device. Connection unitsandeach include a flat plate shaped connection unit main part, a connector terminalfor measurement device provided at the connection unit main partand connected to a signal inputting/outputting connection portorcorresponding to each of measurement devicesto, and a connector terminalfor external device provided at the connection unit main partand connected to a signal inputting/outputting connection portof each of external devicesto. The connection unit main partis further provided with a manually operable switch.

Connection unit for connecting external device to measurement device and measurement device optional system using the connection unit

A digital displacement measuring instrument includes: a body; a spindle; an encoder; a display; a speed information detector that detects a moving speed of the spindle; a judging unit that judges whether or not the spindle is stopped based on the moving speed detected by the speed information detector and, when the judging unit judges that the spindle is stopped, judges whether or not the moving speed of the spindle just before the spindle is stopped exceeds a predetermined threshold; and a notifying unit that notifies a judgment result provided by the judging unit.

Digital displacement measuring instrument

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.

A dust-proof structure for a measuring tool, includes: a case provided with an opening formed through a surface opposed to a protection plate thereof; a solar panel accommodated in the case through the opening of the case; an intermediate panel pressing an outer circumferential portion of the solar panel against a bottom wall of the case; a display device disposed at an inward portion of the intermediate panel and opposed to the solar panel with a gap; a cover attached to close the opening of the case; a screw used to secure the cover and the intermediate panel to the case; and a temporary-fixing unit disposed between the intermediate panel and the case, the temporary-fixing unit temporarily fixing the intermediate panel to the case while the outer circumferential portion of the solar panel is pressed against the bottom wall of the case.

Dust-proof structure for measuring tool

A digital indicator includes: a body; a spindle formed in the body, movably in an axial direction; a displacement detecting sensor configured to detect a movement displacement amount of the spindle; a display device configured to display the movement displacement amount of the spindle detected by the displacement detecting sensor; and a display controller configured to linearly move a measured value display mark representing a measured value in a display surface of the display device according to variations in the measured value.

Digital indicator and multipoint measuring apparatus

A micrometer includes: a displacement detector that detects a displacement of a spindle; a display device that is rotatably attached to a fixed sleeve; and a control device that controls the display device. The display device includes: an image display section that displays an image including a measurement value based on the displacement detected by the displacement detector; a surface member that faces the image display section and has a touch surface; a position sensor that detects a position pressed on the touch surface; and a support member that supports the image display section, the surface member and the position sensor while the touch surface is exposed to an outside, the support member being rotatably attached to the fixed sleeve.

Micrometer

Stand for a micrometer

A micrometer includes: a body; a fixed sleeve that is fixed to the body; a spindle that is screwed to the fixed sleeve; a thimble that is rotatably fitted to an outer circumference of the fixed sleeve and has an outer end connected to the spindle; an operation sleeve fitted over a range from an outer circumference of the thimble to an outer end of the spindle and being rotatable relative to the thimble; and a constant pressure mechanism that is disposed between the operation sleeve and the spindle, the constant pressure mechanism transmitting a rotation of the operation sleeve to the spindle and allowing a free rotation of the operation sleeve against the spindle when a predetermined or more amount of load is applied on the spindle. Ball bearings are disposed between the thimble and the operation sleeve.

Disclosed is a micrometer with an improved a heat-insulating property. A micrometerwith a U-shaped framesupporting an anviland a spindleat tip end portions thereof so that the anviland the spindleare coaxially opposed to each other is provided with a heat insulating cover. The heat insulating coveris shaped to accommodate a bottom portion of the frame, and is detachable with respect to the frame. The heat insulating covercovers a bottom faceof the framewhile supporting the bottom portion of the frameby sandwiching from both sides of the frame

Growing community of inventors

Kawasaki, Japan

Shuji Hayashida