Watch comprising a magnetic clamping device

Patent metadata

Field	Value
Publication number	US-10691077-B2
Application number	US-201715725761-A
Country	US
Kind code	B2
Filing date	Oct 5, 2017
Priority date	Oct 11, 2016
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

A watch including a case containing a plate and an electronic module powered by a button cell battery, a conductor electrically connecting the button cell battery to the electronic module and a clamping device capable of ensuring an electrical connection between the button cell battery and the conductor, wherein the clamping device includes a magnet.

First claim

What is claimed is:

1. A watch comprising:
a case comprising a crystal and a middle part, the middle part containing a plate and an electronic watch movement positioned entirely within the plate and powered by a cylindrical battery positioned entirely within the plate;
a conductor electrically connecting the battery to the electronic watch movement; and
a clamping device capable of ensuring an electrical connection between the battery and the conductor, wherein the clamping device includes a first magnet and a second magnet, said first magnet being positioned entirely within the plate and directly over a top face of the battery and the conductor such that a magnetizing force between the first magnet and the battery ensures electrical conduction between the first magnet and the conductor, said second magnet being positioned directly under a bottom face of the battery.

2. The watch according to claim 1 , wherein the conductor is flexible.

3. The watch according to claim 2 , wherein the conductor is a flat cable.

4. The watch according to claim 1 , wherein a first end of the second magnet is directly attached to the battery and the conductor is fixed to a second end of the second magnet.

5. The watch according to claim 4 , wherein the first magnet is placed between the conductor and the battery.

6. The watch according to claim 5 , wherein the first magnet is gold plated.

7. The watch according to claim 1 , wherein the conductor is placed between the first magnet and the battery.

8. The watch according to claim 1 , wherein the first magnet includes a conductive surface.

9. The watch according to claim 8 , wherein the first magnet is made of a conductive material.

10. The watch according to claim 1 , wherein the conductor is electrically insulated.

11. The watch according to claim 1 , wherein the second magnet is a magnetic strip whose length is at least five times the thickness of the second magnet.

12. The watch according to claim 1 , wherein the watch includes an O-ring joint arranged to hold the battery.

13. The watch according to claim 1 , wherein the magnet is fixed directly to the plate.

14. The watch according to claim 1 , wherein the case includes a back cover and the electronic watch movement, the battery, the first magnet, and the second magnet are positioned within the case.

15. The watch according to claim 14 , wherein the back cover of the case includes a battery hatch, and the battery is configured to be inserted into the case through the back cover when the battery hatch has been removed.

16. The watch according to claim 1 , wherein a wall of the battery is made of ferromagnetic material.

17. The watch according to claim 1 , wherein the battery is cylindrical in shape and positioned in a recess in the plate.

18. The watch according to claim 17 , wherein a second end of the conductor is circular and in direct contact with the battery, wherein the first magnet is cylindrical, wherein a diameter of the first magnet is smaller than a diameter of the second end of the conductor, and wherein the diameter of the second end of the conductor is smaller than a diameter of the battery.

19. The watch according to claim 1 , wherein the second magnet protrudes out of the plate.

20. The watch according to claim 1 , wherein the electronic watch movement is positioned laterally next to the battery within the plate, the conductor that is clamped to the battery by the first magnet includes an end that is directly positioned on a top face of the electronic watch movement, and a conductor that is clamped to the battery by the second magnet includes an end that is directly positioned on a bottom face of the electronic watch movement.

Assignees

• Eta Sa Mft Horlogere Suisse

Inventors

• Lagorgette Pascal

Classifications

• H01M50/216

  adapted for button or coin cells · CPC title

• G04G19/00

  Electric power supply circuits specially adapted for use in electronic time-pieces · CPC title

• G04G17/06 Primary

  Electric connectors, e.g. conductive elastomers · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• G04C3/107 Primary

  Controlling frequency or amplitude of the oscillating system (circuits G04C3/108) · CPC title