BRUSH DC MOTOR WITH REDUCTION MECHANISM
First Claim
1. A brush DC motor with reduction mechanism, comprising:
- a brush DC motor including a hollow motor case, a stator section and a rotor section, the stator section and the rotor section being received in the motor case; and
a first reducing section drivable by the motor, the first reducing section including a first sun gear, an external ring gear positioned around the sun gear and several planetary gears held between the external ring gear and the sun gear and engaged with the sun gear and the external ring gear, the first reducing section further including a planetary carrier for rotatably locating the planetary gears in their true positions, the brush DC motor being characterized in that the rotor section has a substantially cylindrical core, multiple linear splines being formed on a circumference of the core at intervals in parallel to each other, the splines extending along an axis of the core by a predetermined length, one end of the core with the splines formed on the circumference of the end serving as the sun gear of the first reducing section.
1 Assignment
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Accused Products
Abstract
A brush DC motor with reduction mechanism includes: a brush DC motor including a motor case, a stator section and a rotor section having a substantially cylindrical core, the stator section and the rotor section being received in the motor case; and a first reducing section drivable by the motor. The first reducing section includes a first sun gear, an external ring gear positioned around the sun gear and several planetary gears held between the external ring gear and the sun gear and engaged with the sun gear and the external ring gear. The first reducing section further includes a planetary carrier for locating the planetary gears in their true positions. Multiple parallel linear splines are formed on a circumference of the core at intervals. One end of the core with the splines formed on the circumference of the end serves as the sun gear of the first reducing section.
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Citations
8 Claims
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1. A brush DC motor with reduction mechanism, comprising:
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a brush DC motor including a hollow motor case, a stator section and a rotor section, the stator section and the rotor section being received in the motor case; and a first reducing section drivable by the motor, the first reducing section including a first sun gear, an external ring gear positioned around the sun gear and several planetary gears held between the external ring gear and the sun gear and engaged with the sun gear and the external ring gear, the first reducing section further including a planetary carrier for rotatably locating the planetary gears in their true positions, the brush DC motor being characterized in that the rotor section has a substantially cylindrical core, multiple linear splines being formed on a circumference of the core at intervals in parallel to each other, the splines extending along an axis of the core by a predetermined length, one end of the core with the splines formed on the circumference of the end serving as the sun gear of the first reducing section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification