Electronic display measuring device

• US 4,748,861 A
• Filed: 11/21/1986
• Issued: 06/07/1988
• Est. Priority Date: 11/22/1985
• Status: Expired due to Term

• Current Assignee: Mitutoyo Mfg. Co., Ltd.
• Original Assignee: Mitutoyo Mfg. Co., Ltd.
• Inventors: Matsumoto, Toshiyuki, Ohtani, Shigeru
• Primary Examiner(s): NOLAND, THOMAS
• Application Number:
  US06/934,218
• Time in Patent Office: 564 Days
• Field of Search: 73/866.3, 73/866.1, 73/865.9, 340/713
• US Class Current: 73/866.3
• CPC Class Codes: G01D 11/24 Housings ; Casings for instruments

Abstract

A measuring device provided with an electronic display for displaying a measured value has a main body composed of two members which are rotatable relative to each other. A plurality of switch elements which enable selection of a desired measuring factor are provided on portions of the main body through which the two members rotate relative to each other. The selection of a switch element is effected on the basis of the fact that the switch element stays in a connected state for a predetermined period of time, or by actuating a selector button. The result of measurement is displayed on the electronic display in digital and/or analog form.

Claims

1. An electronic display measuring device having an encoder incorporated in a main body, said encoder being adapted to convert a measurement variable into an electric signal, and an electronic display for displaying a measured value, said device comprising:

said main body including a first member provided with said encoder, and a second member provided with said electronic display, said first and second members being rotatable relative to each other so that the position of said electronic display is changeable; and

a switch for controlling at least one of said encoder and said electronic display, said switch being provided so as to be actuated by utilizing a circumferential displacement between said first and second members which is caused when these members are rotated relative to each other.

2. An electronic display measuring device according to claim 1, wherein said switch includes a plurality of switch elements arranged on a circular locus with its center at the center of relative rotation between said first and second members, any one of said switch elements being selected on the basis of the fact that a selected one of said switch elements stays in a predetermined state for a predetermined period of time.

3. An electronic display measuring device according to claim 1, wherein said switch includes a plurality of switch elements arranged on a circular locus with its center at the center of relative rotation between said first and second members, and a selector button for selecting one of said switch elements.

4. An electronic display measuring device according to claim 3, wherein said selector button is defined by a plurality of selector buttons.

5. An electronic display measuring device according to claim 1, wherein said electronic display includes a digital display and an analog display.

6. An electronic display measuring device according to claim 1, wherein said electronic display includes a display section which effects real-time display of the amount of displacement of a spindle, and a display section for displaying a measured value corresponding to a predetermined switch element.

7. An electronic display measuring device according to claim 1, wherein said first and second members have respective cylindrical portions through which they are connected so as to be rotatable relative to each other.

8. An electronic display measuring device according to claim 1, wherein said first and second members are respectively provided with electrical equipment means for electrically processing the amount of displacement of a spindle, said electrical equipment means being connected together by a belt-shaped wiring.

9. An electronic display measuring device according to claim 8, wherein said belt-shaped wiring has a curvature equal to that of the circular locus defined by the relative rotation between said first and second members.