A planet carrier suitable for a two-stage planetary gear train

By connecting the secondary planetary gear train of the electric bicycle with an integrated sleeve, planetary gear mounting bracket and gear ring mounting plate, the coaxiality and dynamic balance problems are solved, achieving a high-precision and lightweight connection, and reducing vibration and noise.

CN224515901UActive Publication Date: 2026-07-17OKAWA MOTOR TECHNOLOGY (JIANGSU) CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
OKAWA MOTOR TECHNOLOGY (JIANGSU) CO LTD
Filing Date
2025-08-08
Publication Date
2026-07-17

Smart Images

  • Figure CN224515901U_ABST
    Figure CN224515901U_ABST
Patent Text Reader

Abstract

The application relates to a planet carrier suitable for a two-stage planetary gear train, which comprises a sleeve, a planet wheel mounting frame and a ring gear mounting disc which are integrally formed and coaxially arranged; the sleeve is used for being connected with a sun gear in a first-stage planetary gear train; the planet wheel mounting frame is used for being connected with a planet wheel in the first-stage planetary gear train; and the ring gear mounting disc is used for being connected with a ring gear in a second-stage planetary gear train. The application realizes high-precision, lightweight and integrated connection between the two-stage planetary gear trains.
Need to check novelty before this filing date? Find Prior Art

Claims

1. A planet carrier suitable for use in a two-stage planetary gear train, characterised in that: It includes a one-piece molded and coaxially arranged sleeve, planetary gear mounting bracket, and gear ring mounting plate; among which, The sleeve is used to connect to the sun gear in the first-stage planetary gear train; The planetary gear mounting bracket is used to connect to the planetary gears in the first-stage planetary gear train; The gear ring mounting plate is used to connect with the gear ring in the second-stage planetary gear train.

2. A planet carrier suitable for use in a two-stage epicyclic gear train according to claim 1, characterised in that: The sleeve is coaxially provided with an axially penetrating shaft hole.

3. A planet carrier suitable for use in a two-stage epicyclic gear train according to claim 1, characterised in that: The planetary gear mounting bracket has radially penetrating planetary gear mounting slots and axially penetrating planetary gear shaft holes, which are interconnected. Multiple sets of planetary gear mounting slots and planetary gear shaft holes are provided in a one-to-one correspondence, and these multiple sets of planetary gear mounting slots and planetary gear shaft holes are arranged symmetrically around an axis.

4. A planet carrier suitable for use in a two-stage epicyclic gear train according to claim 3, characterised in that: The planetary gear mounting bracket has non-through weight-reduction holes along the axial direction, and the weight-reduction holes are formed between adjacent planetary gear mounting slots.

5. A planet carrier suitable for use in a two-stage epicyclic gear train according to claim 1, characterised in that: The gear ring mounting plate has a protruding mounting flange on the side away from the planetary gear mounting bracket, and the outer periphery of the gear ring in the second-stage planetary gear train is fixedly mounted on the inner periphery of the mounting flange.

6. A planet carrier suitable for use in a two-stage epicyclic gear train according to claim 5, characterised in that: The mounting flange has a toothed ring positioning groove.