US 9,002,664 B2Granted

Flow counter

AssigneeEnplas Corporation

InventorHuiqing Chen

Life of this patent

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Abstract

A flow counter capable of correctly checking an operating state of the flow counter and leakage and correctly indicating a total amount of flow by allowing the rotation of a pointer to be learned accurately in the form of numerical data. In this flow counter (1), rotation of a flow detection driving gear (5) is transmitted to a flow indication section (4) composed of a plurality of digit wheels (4a1 to 4a8) by a main gear train section (2). The rotation of the flow detection driving gear (5) is also transmitted to a first pointer (6) by a branch gear section (3) branched from the main gear train section (2). The first pointer (6) indicates the operating state of the flow detection driving gear (5). The flow indication section (4) indicates a total amount of flow. A rotation detection member, which is a component of a rotation sensor, is integrally rotatably mounted on a rotating shaft of the first pointer (6). An amount of rotation of the rotating shaft is electrically detected by a rotation sensor.

Claims4

Dependent claims

A flow counter that transmits rotation of a flow detection driving gear to a pilot, a first pointer, and a flow indication section comprising a plurality of digit wheels, by means of a gear train, to indicate an operating state of the flow detection driving gear by the pilot and the first pointer and to indicate a total amount of flow by the flow indication section,

wherein the gear train comprises:
a main gear train section that comprises a plurality of gears arranged consecutively from the flow detection driving gear to the digit wheel of the flow indication section and transmits the rotation of the flow detection driving gear to the pilot and the flow indication section;
a branch gear section that comprises at least one arranged gear which is branched from a predetermined gear of the main gear train section and transmits the rotation of the flow detection driving gear to the first pointer;
and
a rotation sensor comprising a rotation detection member;
wherein the pilot is fixed to a shaft of one of the plurality of gears, which is a component of the main gear train section;
wherein the at least one arranged gear is mounted to rotate integrally with a rotating shaft of the first pointer;
wherein the rotation detection member is integrally rotatably mounted on the rotating shaft of the first pointer;
wherein an amount of the rotation of the rotating shaft is electrically detected by the rotation sensor;
and
wherein the predetermined gear of the main gear train section and the flow detection driving gear mesh with each other.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/110,134Filed 18 May 2011
Priority: JP 2010-11572019 May 2010
Published: US 2011/0288794 A124 Nov 2011
Granted: 7 Apr 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G01F 1/065
Using rotating vanes with tangential admission: with radiation as transfer means to the indicating device, e.g. light transmission
G01F 1/075
Using rotating vanes with tangential admission: with magnetic or electromagnetic coupling to the indicating device
G01F 1/103
Using rotating vanes with axial admission: with radiation as transfer means to the indicating device, e.g. light transmission
G01F 1/115
Using rotating vanes with axial admission: with magnetic or electromagnetic coupling to the indicating device