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US 2021/0062733 A1Published application
Throttle valve device
AssigneesDenso Daishin Corporation, Denso Corporation
InventorsKoshiro MIWA, Yasushi KAWANO, Kenichi ISHIHARA, Tohru SHIMIZU, Yuta FUJINAKA
Life of this patent
Estimating the term…
Abstract
A throttle valve device includes a body, a valve, a motor, a speed reducer, and a cover. The body that defines a passage and a motor space therein. The motor includes a motor yoke, a magnet, a motor shaft, a pair of motor bearings, an armature core, a commutator, a brush, and a brush holder. The motor yoke is made of a magnetic material. The brush holder holds the brush. The motor yoke has an open end that is covered by the brush holder.
Claims7
A throttle valve device, comprising;
- a body that defines a passage and a motor space therein;
- a valve that is disposed in the passage and is configured to control a flow rate by changing a passage area of the passage;
- a motor that is disposed in the motor space and is configured to generate a driving force for the valve to rotate;
- a speed reducer that is disposed between the motor and the valve and transmits the driving force of the motor to the valve;
- and
- a cover that covers an open end of the body to house the speed reducer in the body, wherein
- the motor includes:
- a motor yoke made of a magnetic material;
- a magnet that is arranged on an inner circumferential surface of the motor yoke;
- a motor shaft that is disposed inside the motor yoke;
- a pair of motor bearings that rotatably support the motor shaft;
- an armature core that is coupled to the motor shaft in the motor yoke;
- a commutator that is coupled to the motor shaft in the motor yoke;
- a brush that is configured to energize the commutator;
- and
- a brush holder that holds the brush, wherein
- the motor yoke has an open end that is covered by the brush holder.
14 more elements
A throttle valve device, comprising:
- a body that defines a passage and a motor space;
- a valve that is disposed in the passage and is configured to control a flow rate by changing a passage area of the passage;
- a motor that is disposed in the motor space and is configured to generate a driving force for the valve to rotate;
- a speed reducer that is disposed between the motor and the valve and transmits the driving force of the motor to the valve;
- and
- a cover that covers an open end of the body to house the speed reducer in the body, wherein
- the motor includes:
- a motor yoke made of a magnetic material;
- a magnet that is arranged on an inner circumferential surface of the motor yoke;
- a motor shaft that is disposed inside the motor yoke;
- a pair of motor bearings that rotatably support the motor shaft;
- an armature core that is coupled to the motor shaft in the motor yoke;
- a commutator that is coupled to the motor shaft in the motor yoke;
- a brush that is configured to energize the commutator;
- and
- a brush holder that holds the brush, wherein the open end of the motor space of the body is closed by the brush holder.
13 more elements
Dependencies are inferred from the claim text.