Simplified motor module

Patent metadata

Field	Value
Publication number	US-10447095-B2
Application number	US-201715413926-A
Country	US
Kind code	B2
Filing date	Jan 24, 2017
Priority date	Feb 23, 2016
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

A motor module includes a stator formed of a main plate of a first thickness on which is mounted a rotor The stator has at each end a receiving zone, the thickness of which is less than the first thickness.

First claim

What is claimed is:

1. A motor module comprising:
a stator formed of a main plate of a first thickness on which is mounted a rotor, said stator being configured in order to have at each end a receiving zone, a thickness of the receiving zones is less than the first thickness;
a coil core formed of a bar of a second thickness on which is wound a coil wire forming a coil of the motor module, the coil core being fixed to the receiving zones; and
a printed circuit fixed to the stator, the printed circuit board having a third thickness,
wherein the coil core is fixed to the receiving zones of the stator via first holes, the printed circuit is fixed to the main plate of the stator via second holes, and the first holes are spaced apart from the second holes.

2. The motor module according to claim 1 , wherein the assembled motor module is less thick than a total of the the first thickness of the stator, the second thickness of the coil core, and the third thickness of the printed circuit combined.

3. The motor module according to claim 2 , wherein the assembled motor module is equal in thickness to the first thickness of the stator plus the third thickness of the printed circuit or the thickness of the receiving zones plus the second thickness of the coil core and a fourth thickness of the wound coil wire.

4. The motor module according to claim 3 , wherein the main plate of the stator is narrowed in its central part in order to form one of the receiving zones at each end.

5. The motor module according to claim 1 , wherein the assembled motor module is equal in thickness to the first thickness of the stator plus the third thickness of the printed circuit or the thickness of the receiving zones plus the second thickness of the coil core and a fourth thickness of the wound coil wire.

6. The motor module according to claim 5 , wherein the first thickness of the stator plus the third thickness of the printed circuit is equal to the thickness of the receiving zones plus the second thickness of the coil core and the fourth thickness of the wound coil wire.

7. The motor module according to claim 1 , wherein the main plate of the stator is narrowed in its central part in order to form one of the receiving zones at each end.

8. The motor module according to claim 7 , wherein the receiving zones extending substantially perpendicularly relative to a longitudinal axis of the main plate to form a receptacle in which the coil core is accommodated.

9. The motor module according to claim 1 , wherein the printed circuit comprises conductive tracks which connect connection regions to which the coil wire of the motor module is connected.

10. The motor module according to claim 1 , wherein the printed circuit bears the controller unit of the motor.

11. The motor module according to claim 1 , wherein the coil core and the printed circuit are fixed to the stator such that the coil core does not overlap the printed circuit in a thickness direction of the motor module.

Assignees

• Eta Sa Mft Horlogere Suisse

Inventors

• Jufer Martin
• LAVENU Yann
• Kraehenbuehl David Benjamin

Classifications

• H02K37/16

  having horseshoe armature cores · CPC title

• H02K1/143

  of the horse-shoe type · CPC title

• G04C3/14

  incorporating a stepping motor (G04C3/02 - G04C3/12 take precedence {; generating commutating pulses in primary clocks G04C13/0463}) · CPC title

• H02K2211/03

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

• H02K1/14 Primary

  Stator cores with salient poles · CPC title