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US 12,756,248 B2Granted
Stator arrangement for a radial flux motor
AssigneeBorgWarner Inc.
InventorsSilvio Koch, Benedikt Hummel
Life of this patent
Estimating the term…
Abstract
A stator arrangement (10) for a radial flux motor (100) having an axis of rotation (100a). The stator arrangement (10) comprises a stator housing (20), a stator (40) and an encapsulation body (50). The stator housing (20) defines a circumferential portion (30) for receiving the stator. The stator (40) is arranged on the circumferential portion (30). Furthermore, the stator (40) is encapsulated in the stator housing (20), wherein the encapsulation body (50) is form-fittingly connected to the stator housing (20) in such a manner that the stator (40) is secured at least in the axial direction (2) in the stator housing (20) by the encapsulation body (50).
Claims14
A stator arrangement (10) for a radial flux motor (100) having an axis of rotation (100a), comprising:
- a stator housing (20), the stator housing (20) defining a circumferential portion (30) for receiving the stator,
- a stator (40), which is arranged with an inner circumferential surface of the stator (40) on a radially outer surface the circumferential portion (30) of the stator housing (20), and
- an encapsulation body (50),
- wherein the stator (40) is encapsulated in the stator housing (20), and the encapsulation body (50) is form-fittingly connected to the stator housing (20) in such a manner that the stator (40) is secured at least in the axial direction (2) in the stator housing (20) by the encapsulation body (50),
- wherein the encapsulation body (50) is form-fittingly connected to the stator housing (20) via one or more undercuts (52, 53, 54, 55, 56) in order to secure the stator (40) in the axial direction (2),
- wherein the stator housing (20) comprises an axial end wall (22) which extends away from the circumferential portion (30) in the radial direction (4), and wherein the encapsulation body (50) extends in the axial direction (2) from the stator (40) to the axial end wall (22), and
- wherein at least one of the one or more undercuts (52, 53, 54, 55, 56) is formed in the circumferential portion (30),
- wherein the circumferential portion (30) is a first circumferential portion (30), wherein the stator housing (20) furthermore comprises a second circumferential portion (24) which is arranged spaced apart in the radial direction (4) from the first circumferential portion (24), and wherein the encapsulation body (50) extends in the radial direction (4) from the first circumferential portion (30) to the second circumferential portion (24), and
- wherein at least one of the one or more undercuts (52, 53, 54, 55, 56) is formed in the second circumferential portion (24).
6 more elements
A stator arrangement (10) for a radial flux motor (100) having an axis of rotation (100a), comprising:
- a stator housing (20), the stator housing (20) defining a circumferential portion (30) for receiving the stator,
- a stator (40), which is arranged on the circumferential portion (30), and
- an encapsulation body (50),
- wherein the stator (40) is encapsulated in the stator housing (20) and the encapsulation body (50) is form-fittingly connected to the stator housing (20) in such a manner that the stator (40) is secured at least in the axial direction (2) in the stator housing (20) by the encapsulation body (50),
- wherein the circumferential portion (30) comprises at least one web (35, 37) on which the stator (40) is arranged so as to be at least partially in contact therewith in the radial direction (4),
- wherein the circumferential portion (30) comprises two axially spaced-apart webs (35, 37) for receiving the stator, and
- wherein a depression (34) into which the encapsulation body (50) projects and forms an undercut (54) is formed between the two webs (35, 37), and wherein the depression (34) extends in the axial direction (2) over at least 25% of an entire axial width of a stator laminated core (42) of the stator (40).
4 more elements
A radial flux motor (100) for a fan (1), comprising:
- a motor housing (110),
- a shaft (120), which is mounted rotationally in the motor housing (110), a rotor (130), which is arranged for conjoint rotation on the shaft (120) in the motor housing (110),
- a stator arrangement (10) having an axis of rotation (100a), comprising:
- a stator housing (20), the stator housing (20) defining a circumferential portion (30) for receiving the stator,
- a stator (40), which is arranged on the circumferential portion (30), and
- an encapsulation body (50),
- wherein the stator (40) is encapsulated in the stator housing (20) and the encapsulation body (50) is form-fittingly connected to the stator housing (20) in such a manner that the stator (40) is secured at least in the axial direction (2) in the stator housing (20) by the encapsulation body (50),
- wherein the encapsulation body (50) is form-fittingly connected to the stator housing (20) via one or more undercuts (52, 53, 54, 55, 56) in order to secure the stator (40) in the axial direction (2),
- wherein the circumferential portion (30) is a radially inner circumferential portion (30), wherein the stator housing (20) furthermore comprises a radially outer circumferential portion (24) which is arranged spaced apart in the radial direction (4) from the radially inner circumferential portion (30), and wherein the encapsulation body (50) extends in the radial direction (4) from the radially inner circumferential portion (30) to the radially outer circumferential portion (24),
- wherein at least one of the one or more undercuts (52, 53, 54, 55, 56) is formed in the radially outer circumferential portion (24),
- wherein the stator (40) is arranged radially adjacent to the rotor (130) in the motor housing (110), and
- wherein the rotor (130) is formed externally and comprises a plurality of permanent magnets (132) which are arranged distributed in the circumferential direction (6) on a rotor body (134) of the rotor (130).
9 more elements
Dependencies are inferred from the claim text.