一种减速轮毂电机
By designing a planetary carrier and a fixed base to form an installation cavity in the hub motor, and combining an integrated fixed base with a fixed shaft, parallel plug terminals, and a multi-bearing structure, the problem of excessive axial space occupied by the reduction mechanism is solved, thus achieving a compact design and wide application of the hub motor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 深圳市精锐昌精密智能有限公司
- Filing Date
- 2025-08-06
- Publication Date
- 2026-07-17
AI Technical Summary
The addition of a reduction gear mechanism to existing hub motors results in a larger axial dimension, limiting their applicability to applications with ample axial space.
A geared hub motor is designed, in which a mounting cavity is formed by a planetary carrier and a fixed base. The motor assembly is located in the mounting cavity, and the planetary gear assembly is rotatably connected to the planetary carrier. The planetary assembly drives the housing to rotate relative to the fixed shaft. The design combines an integrated fixed base and fixed shaft, parallel plug terminals, and a multi-bearing structure to optimize space utilization and structural compactness.
This reduces the axial dimension of the hub motor, expands its application range, improves structural compactness and service life, and reduces assembly errors and vibration noise.
Smart Images
Figure CN224520853U_ABST
Abstract
Claims
1. A reduction gear hub motor characterized by: The assembly includes a housing (1), a fixed base (2), a fixed shaft (3), a planetary carrier (4), a planetary assembly (5), and a motor assembly (6). The housing (1) has a receiving cavity (11). The planetary carrier (4) and the fixed base (2) are both located in the receiving cavity (11). One end of the fixed shaft (3) extends into the receiving cavity (11) and connects to the fixed base (2), while the other end extends out of the housing (1). The planetary carrier (4) and the fixed base (2) form an installation cavity (12). The motor assembly (6) is located in the installation cavity (12). The planetary assembly (5) is rotatably connected to the planetary carrier (4). The motor assembly (6) drives the housing (1) to rotate relative to the fixed shaft (3) through the planetary assembly (5).
2. The reduction gear hub motor of claim 1, characterized in that: The deceleration hub motor also includes a wire (7), and the motor assembly (6) includes a drive plate (61). The drive plate (61) is connected to the fixed base (2) on one side adjacent to the fixed shaft (3). The drive plate (61) is provided with a plug terminal (611). The central axis of the slot of the plug terminal (611) is parallel to the drive plate (61). The fixed shaft (3) has a wire passage (33) in the axial direction. One end of the wire (7) is connected to the plug terminal (611), and the other end extends through the wire passage (33) to the outside of the fixed shaft (3).
3. The reduction gear hub motor of claim 1, wherein: The planetary assembly (5) includes a sun gear (51) and planet gears (52). The sun gear (51) is connected to the power output end of the motor assembly (6). The sun gear (51) meshes with the planet gears (52). A gear ring (13) meshes with the planet gears (52) on the housing (1). The sun gear (51) is used to drive the gear ring (13) and the housing (1) to rotate together through the planet gears (52).
4. The reduction gear hub motor of claim 3, characterized in that: The motor assembly (6) further includes a stator (62), a rotor (63), and a motor shaft (64). The stator (62) is fixedly mounted on the fixed base (2). The shaft of the motor shaft (64) is fixedly connected to the rotor (63). The end of the motor shaft (64) is connected to the sun gear (51). The stator (62) is used to drive the rotor (63) and the motor shaft (64) to rotate relative to the planetary carrier (4), thereby driving the sun gear (51) to rotate.
5. The reduction gear hub motor of claim 4, characterized in that: The fixed base (2) is provided with a first mounting hole (21), and a first bearing (22) is installed in the first mounting hole (21). The end of the motor shaft (64) away from the sun gear (51) is rotatably connected to the fixed base (2) through the first bearing (22).
6. The reduction gear hub motor of claim 4, wherein: The planetary carrier (4) is provided with a second mounting hole (41), and a second bearing (42) is installed in the second mounting hole (41). The shaft of the motor shaft (64) is rotatably connected to the planetary carrier (4) through the second bearing (42).
7. The reduction gear hub motor of claim 4, characterized in that: A support shaft (43) is protruding on the side of the planetary carrier (4) away from the motor shaft (64). A third bearing (44) is provided on the housing (1) at a position corresponding to the support shaft (43). The support shaft (43) is rotatably connected to the housing (1) through the third bearing (44).
8. The reduction gear hub motor of claim 3, wherein: The planetary carrier (4) includes an upper enclosure plate (45) and a lower enclosure plate (46), and a mounting groove (47) is formed between the upper enclosure plate (45) and the lower enclosure plate (46), which allows the planetary gear (52) to be inserted along the radial direction of the planetary carrier (4).
9. The reduction gear hub motor of claim 1, wherein: The fixed base (2) is provided with a plurality of first locking teeth (23), and the planetary carrier (4) is provided with a plurality of second locking teeth (48). The distance between two adjacent first locking teeth (23) corresponds to the size of the second locking teeth (48), and the distance between two adjacent second locking teeth (48) corresponds to the size of the first locking teeth (23). The first locking teeth (23) and the second locking teeth (48) engage to restrict the circumferential movement of the planetary carrier (4) relative to the fixed base (2).
10. The reduction gear hub motor of claim 1, wherein: The fixed shaft (3) extends to one end outside the housing (1) and has a flat surface (31). The normal direction of the flat surface (31) is parallel to the radial direction of the fixed shaft (3). The fixed shaft (3) has a thread (32) at a position corresponding to the flat surface (31).