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US 2022/0021258 A1Published application
Pump with direct connection of stator to printed circuit board
AssigneeNidec Gpm GmbH
InventorFrank SCHWAMBERGER
Life of this patent
Estimating the term…
Abstract
A pump includes an electric motor with a rotor rotatably mounted about an axis of rotation and circumferentially surrounding a stator. The stator includes a stator core and coils wound on the stator core. The coils are made from a winding wire with winding wire end sections electrically contacted at an end surface with a printed circuit board. The winding wire end sections, starting from the stator, extend radially outwardly to the axis of rotation and are directly contacted with the printed circuit board via insulation displacement contacts.
Claims10
1-9. (canceled)
10:
- A pump, comprising:
- an electric motor with a rotor which is mounted rotatably about an axis of rotation and which circumferentially surrounds a stator;
- wherein
- the stator includes a stator core and coils wound on the stator core, the coils being made from a winding wire with winding wire end sections, and the winding wire end sections being electrically contacted on an end surface with a printed circuit board;
- the winding wire end sections extend radially outwardly from the stator to an axis of rotation and are directly contacted with the printed circuit board via insulation displacement contacts.
2 more elements
11:
- The pump according to claim 10, wherein the insulation displacement contacts are soldered to the printed circuit.
12:
- The pump according to claim 10, wherein the winding wire end sections are the same or approximately the same length for all phases.
13:
- The pump according to claim 10, wherein the stator and the printed circuit board are aligned with their upper and lower sides parallel or substantially parallel to each other when the winding wire end sections are pressed into the insulation displacement contacts.
14:
- The pump according to claim 10, wherein the winding wire end sections extend in a radial direction and in a direction of the axis of rotation.
15:
- A method of electrically contacting a stator of an electric motor of a pump with a printed circuit board, the stator includes a stator core and coils wound on the stator core, the coils are formed of a winding wire including winding wire end sections that extend parallel or substantially parallel to a longitudinal axis of the pump, the method comprising:
- bending the winding wire end sections outward in a radial direction to the longitudinal axis of the pump;
- placing the stator with respect to the printed circuit board such that an axial distance is provided between an upper side of the printed circuit board and a lower side of the stator and with a distance between a longitudinal axis of the stator and a longitudinal axis of the printed circuit board such that the printed circuit board and the stator are aligned with their upper and lower sides parallel or substantially parallel to each other;
- inserting and pressing ends of the winding wire end sections into insulation displacement contacts on the printed circuit board;
- and
- moving the stator relative to the printed circuit board such that the axial distance is increased and the distance between the longitudinal axes of the stator and the printed circuit board is zero.
3 more elements
16:
- The method according to claim 15, wherein the distance between the longitudinal axes of the stator and the printed circuit board is in a range between about 5 mm and about 25 mm.
17:
- The method according to claim 16, wherein the distance between the longitudinal axes of the stator and the printed circuit board is about 8 mm.
18:
- The method according to claim 15, wherein the distance between the longitudinal axes of the stator and the printed circuit board is such that the winding wire end sections are located in a visible range of a press-fit tool when contacting the printed circuit board.