Connection assembly for the electrical connection of an electric motor

• US 20040063345A1
• Filed: 08/06/2003
• Published: 04/01/2004
• Est. Priority Date: 09/27/2002
• Status: Abandoned Application

• Current Assignee: Minebea Company Limited (MinebeaMitsumi Inc.)
• Original Assignee: Minebea Company Limited (MinebeaMitsumi Inc.)
• Inventors: Eppler, Willi, Oelsch, Jurgen
• Application Number:
  US10/634,818
• Publication Number:
  US 20040063345A1
• Time in Patent Office: Days
• US Class Current: 439/76.1
• CPC Class Codes: H01R 13/405 Securing in non-demountable manner, e.g. moulding, riveting
• CPC Class Codes: H01R 13/5202 Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
• CPC Class Codes: H01R 39/32 Connections of conductor to commutator segment
• CPC Class Codes: H02K 2211/03 Machines characterised by circuit boards, e.g. pcb
• CPC Class Codes: H02K 5/10 with arrangements for protection from ingress, e.g. water or fingers
• CPC Class Codes: H02K 5/225 Terminal boxes or connection arrangements specially adapted for submersible motors H02K5/132

Abstract

Connection Assembly for the Electrical Connection of an Electric Motor A connection assembly for the electrical connection of an electric motor, which has a plastic mounting plate with integrated connection elements, a printed circuit board with sensor and/or control components for the electric motor and a seal, is characterized in that the seal has a one-part sealing ring of a sprayable or moldable sealing material, which is undetachably shaped to the mounting plate and can be clamped between two opposite sealing faces of a two-part motor casing.

Claims

1. Connection assembly for the electrical connection of an electric motor, which has a plastic mounting plate with integrated connection elements, a printed circuit board with at least one of sensor and control components for the electric motor and a seal comprising a one-part sealing ring of a sprayable or mouldable sealing material, which is undetachably shaped onto the mounting plate and which can be clamped between two opposing sealing surfaces of a two-part motor casing.

2. Connection assembly according to claim 1, wherein on either side of the mounting plate, the sealing ring has a ring part, each of which being provided on its outside with a sealing mating surface which sealingly cooperates with one of the two opposing sealing surfaces.

3. Connection assembly according to claim 2, wherein the mounting plate has at least one through hole, which is filled with the sealing material of a sealing ring, so that there is at least one cohesive material connection of one ring part to the opposite ring part.

4. Connection assembly according to claim 1, wherein the sealing ring is injection-moulded onto the mounting plate.

5. Connection assembly according to claim 1, wherein a printed circuit board equipped with at least one of sensor and control components is held on the motor side to the mounting plate by means of fixing elements formed onto the latter.

6. Connection assembly according to claim 5, wherein in the mounting plate are embedded connection elements, which have bends bent axially towards the electric motor and by means of which the printed circuit board is orientated and which are electrically contacted to conductors located on said board.

7. Connection assembly according to claim 6, wherein at least one of the connection elements has a bend, which passes through an opening in the mounting plate and is electrically conductively connected on the side of the mounting plate remote from the electric motor to at least one conductor of the stator winding.

8. Connection assembly according to claim 6, wherein at least one plug lug of the connection element terminates in a plug part, which is an integral part of the mounting plate.