US 12,445,008 B2
Hub motor
Chun-Wei Chen, Taichung (TW); Chang-Chun Kao, Taichung (TW); and Shang-Feng Lin, Taichung (TW)
Assigned to TIEN HSIN INDUSTRIES CO., LTD., Taichung (TW)
Filed by TIEN HSIN INDUSTRIES CO., LTD., Taichung (TW)
Filed on Oct. 11, 2023, as Appl. No. 18/378,662.
Claims priority of application No. 112118699 (TW), filed on May 19, 2023.
Prior Publication US 2024/0388161 A1, Nov. 21, 2024
Int. Cl. H02K 5/10 (2006.01); B60B 27/02 (2006.01); B60B 27/04 (2006.01); B62M 6/65 (2010.01); H02K 7/116 (2006.01); H02K 21/22 (2006.01); B62M 9/12 (2006.01)
CPC H02K 5/10 (2013.01) [B60B 27/023 (2013.01); B60B 27/04 (2013.01); B62M 6/65 (2013.01); H02K 7/116 (2013.01); H02K 21/22 (2013.01); B62M 9/12 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A hub motor, suitable to be mounted on a bicycle, the hub motor comprising:
an axle, fixed to a frame of the bicycle and having a first end and a second end opposite to the first end;
a stator, fixed to the axle and near the first end, wherein the stator comprises an electromagnet;
a rotor, rotatably sleeved on the axle and suitable for pivoting around the stator with the axle as an axis;
a casing, rotatably sleeved on the axle and suitable for pivoting around the rotor with the axle as an axis, wherein the casing forms an accommodating space, an opening, and a first through-hole, the opening is closed by a side cover, the accommodating space accommodates the stator and the rotor through the opening, the side cover is provided with a second through-hole, the axle is arranged to pass through the casing and the side cover through the first through-hole and the second through-hole respectively, and a convex ring is formed around the second through-hole;
a sealing ring, covering the convex ring and having an outer ring part, an inner ring part, and a connecting part, wherein the outer ring part is arranged on an outer circumference of the sealing ring along a radial direction of the sealing ring, the inner ring part is arranged on an inner circumference of the sealing ring along the radial direction of the sealing ring and surrounds the second through-hole, and the connecting part is arranged between the outer ring part and the inner ring part and is formed with a concave recess; and
a compression ring, arranged in the groove and suitable for driving the sealing ring to compress towards the convex ring.