Pump comprising an electric motor with plug connection in the form of an intermediate ring

Patent metadata

Field	Value
Publication number	US-2022106948-A1
Application number	US-202017424186-A
Country	US
Kind code	A1
Filing date	Jan 17, 2020
Priority date	Jan 30, 2019
Publication date	Apr 7, 2022
Grant date	—

Abstract

A pump includes an electric motor with a rotor mounted rotatably about an axis of rotation and surrounding a stator circumferentially. 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 electrically contacted at an end surface with a printed circuit board. The printed circuit board is surrounded by a plug assembly circumferentially with respect to the axis of rotation. The plug assembly includes contacts which are electrically contacted at a first end with the printed circuit board and are directed radially outwardly at a second end in order to define a plug to contact the printed circuit board with an electrical controller.

First claim

1 - 11 . (canceled)

12 . A pump comprising:
an electric motor with a rotor which is mounted rotatably about an axis of rotation and which surrounds a stator circumferentially; wherein 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 on an end surface with a printed circuit board; the printed circuit board is surrounded by a plug assembly circumferentially with respect to the axis of rotation; the plug assembly includes contacts which are injection-molded into the plug assembly and which are electrically contacted at a first end with the printed circuit board, and which are directed at least partially radially outwardly at a second end to define a plug to contact the printed circuit board with an electrical controller.

13 . The pump according to claim 12 , wherein
the pump housing includes a housing structure which includes a base plate and a dome projecting centrally from the base plate; the base plate and the dome include a central opening extending therethrough, and the stator is seated fixedly on the outside of the dome; and a motor shaft of the electric motor, the motor shaft being rotatably connected to the rotor and extending through the central opening of the housing structure.

14 . The pump according to claim 12 , wherein the plug assembly includes a cylindrical base body with a casing and a circular base surface and a connection region projecting radially outwards from an outside of the casing, the contacts are introduced into the connection region which defines the plug.

15 . The pump according to claim 14 , wherein the plug assembly includes webs projecting inwards on an inside of the casing and extending parallel or substantially parallel to the axis of rotation to center the motor housing.

16 . The pump according to claim 12 , wherein the housing structure of the pump housing includes a centering ring on which the plug assembly is seated and axially aligned.

17 . The pump according to claim 12 , wherein the rotor and the stator are surrounded by a motor housing in which a pump housing is at least partially accommodated, the plug assembly extending in a direction of the axis of rotation between the motor housing and the pump housing.

18 . The pump according to claim 17 , wherein the plug assembly includes a first side having an annular shape against the motor housing and a second side having an annular shape against the pump housing portion.

19 . The pump according to claim 12 , wherein the motor housing and the plug assembly are injection-molded defining a single unitary structure and the pump housing is in contact with the plug assembly.

20 . The pump according to claim 12 , wherein the pump is a dry rotor.

21 . The pump according to claim 12 , wherein the contacts are press-fit contacts or soldered contacts.

22 . An electric drive, comprising:
an electric motor with a rotor which is rotatably mounted 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, and the coils are made from a winding wire with winding-wire end sections electrically contacted with a printed circuit board at an end surface; the printed circuit board is surrounded by a plug assembly circumferentially with respect to the axis of rotation, the plug assembly including contacts which are injection-molded into the plug assembly and which are electrically contacted with the printed circuit board at a first end and are directed at least partially radially outwardly at a second end to define a plug to contact the printed circuit board with an electrical controller.

Assignees

• Nidec Gpm Gmbh

Inventors

• Schwamberger Frank
• Hoffmann Jens
• Nickel Conrad
• Schnitzer Jakob

Classifications

• H02K5/225 Primary

  Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132) · CPC title

• F04B17/03 Primary

  driven by electric motors · CPC title

• H02K3/28

  Layout of windings or of connections between windings (windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32) · CPC title

• H02K2211/03

  Machines characterised by circuit boards, e.g. pcb · CPC title

• H02K11/33

  Drive circuits, e.g. power electronics (H02K11/38 takes precedence) · CPC title