Personal care device having a main functional unit and an ancillary functional unit

Patent metadata

Field	Value
Publication number	US-11745368-B2
Application number	US-202017779163-A
Country	US
Kind code	B2
Filing date	Nov 24, 2020
Priority date	Dec 4, 2019
Publication date	Sep 5, 2023
Grant date	Sep 5, 2023

Abstract

A personal care device has a main functional unit and an ancillary functional unit which is displaced between a non-operational position and an operational position using a biasing arrangement. A magnet arrangement is used to exert a magnetic holding on the ancillary functional unit in the operational position. This provides a stable support of the ancillary functional unit in the operational position without requiring a strong biasing arrangement.

First claim

The invention claimed is:

1. A personal care device comprising:
a main body;
a main functional unit supported by the main body;
an ancillary functional unit supported by the main body and comprising a treatment head; and
a coupling structure that permanently connects the ancillary functional unit to the main body,
wherein the coupling structure:
is configured to allow displacement of the ancillary functional unit relative to the main body from a non-operational position to an operational position; and
comprises a biasing arrangement configured to exert a biasing force on the ancillary functional unit to displace the ancillary functional unit from the non-operational position towards the operational position and to hold the ancillary functional unit in the operational position,
comprises a magnet arrangement configured to exert, in addition to the biasing force of the biasing arrangement, a magnetic holding force on the ancillary functional unit in the operational position of the ancillary functional unit, for retaining the ancillary functional unit in the operational position.

2. The personal care device as claimed in claim 1 , wherein the coupling structure defines a pivotal axis about which the ancillary functional unit is rotatable relative to the main body from the non-operational position to the operational position.

3. The personal care device as claimed in claim 1 , wherein the non-operational position is a retracted position in which the ancillary functional unit is at least partially recessed into the main body, and wherein the operational position is an extended position in which the ancillary functional unit projects from the main body.

4. The personal care device as claimed in claim 1 , wherein the ancillary functional unit comprises a supporting member configured to permanently support the treatment head, and wherein the magnet arrangement is configured to exert the magnetic holding force on the supporting member.

5. The personal care device as claimed in claim 1 , wherein the coupling structure comprises:
a latching mechanism configured to latch the ancillary functional unit in the non-operational position; and
a release mechanism configured to release the latching mechanism such that the ancillary functional unit is enabled to be displaced from the non-operational position to the operational position by the biasing force of the biasing arrangement.

6. The personal care device as claimed in claim 1 , wherein the biasing arrangement comprises a mechanical spring.

7. The personal care device as claimed in claim 1 , wherein the magnet arrangement comprises a first portion mounted to the ancillary functional unit and a second portion mounted to the main body and arranged to magnetically interact with the first portion in the operational position of the ancillary functional unit.

8. The personal care device as claimed in claim 7 , wherein:
the first portion comprises a permanent magnet and the second portion comprises a ferrous metal element; or
the first portion comprises a ferrous metal element and the second portion comprises a permanent magnet.

9. The personal care device as claimed in claim 7 , wherein the first and second portions each comprise a permanent magnet.

10. The personal care device as claimed in claim 7 , wherein the first and/or the second portion is/are covered by a coating.

11. The personal care device as claimed in claim 7 , wherein the first portion comprises a pair of ferrous metal elements and the second portion comprises a pair of permanent magnets, wherein, in the operational position of the ancillary functional unit, each permanent magnet of said pair of permanent magnets is in a position opposite to a respective one of the ferrous metal elements of said pair of ferrous metal elements for magnetic interaction therewith.

12. The personal care device as claimed in claim 1 , wherein the personal care device is an electric shaver, and wherein the main functional unit comprises a shaver head.

13. The personal care device as claimed in claim 12 , wherein the ancillary functional unit comprises a hair trimming unit and the treatment head comprises a hair trimmer.

Assignees

• Koninklijke Philips Nv

Inventors

• Solerio Daniele
• Van Es Michel
• Nijsse Gerard Johannes Pieter
• Mehendale Aditya

Classifications

• B26B19/105 Primary

  with a secondary cutting unit being rotated into an operating position · CPC title

• B26B19/26

  of the type performing different methods of operation simultaneously, e.g. reciprocating and oscillating; of the type having two or more heads of differing mode of operation · CPC title