Shaving device

Patent metadata

Field	Value
Publication number	US-9827684-B2
Application number	US-201515129631-A
Country	US
Kind code	B2
Filing date	Apr 24, 2015
Priority date	May 7, 2014
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

The invention relates to a shaving head comprising at least one cutting unit ( 7, 7 A, 7 B). The cutting unit comprises a ring-like skin-supporting tilting member, being tillable relative to a shaving head main body ( 4, 8 ) about a first tilting axis, an external cutting member, an internal cutting member, and a retainer. According to the invention, the retainer is a multi-purpose retainer in that it provides simultaneously a locking function, a secondary tilting function and an anti-floating function. By virtue of the multi-purpose retainer, the shaving device delivers a high shaving performance and is also easy to clean.

First claim

The invention claimed is:

1. A shaving head for use in a shaving device for skin hairs, said shaving head comprising a shaving head main body and at least one cutting unit, wherein said cutting unit comprises:
a ring-like skin-supporting tilting member, which comprises a ring-like skin-supporting surface, and which comprises two opposed first suspension parts, which are located at mutually different locations along the ring-like skin-supporting tilting member, and via which the skin-supporting tilting member is suspended relative to the shaving head main body in a first tiltable manner about a first tilting axis;
an external cutting member comprising a skin-shaving surface, which is interrupted by an opening structure for allowing hairs to pass;
an internal cutting member, which is drivable for movement along said opening structure in the skin-shaving surface of the external cutting member, for cutting through hairs passing said opening structure; and
a retainer;
and wherein:
said cutting unit has an assembled condition for operation of the shaving head and a disassembled condition for cleaning of the cutting unit, wherein the ring-like skin-supporting tilting member, the external cutting member, the internal cutting member and the retainer in the assembled condition and disassembled condition are, respectively, assembled and at least partly disassembled relative to one another;
in said assembled condition the cutting unit has a skin-contacting surface for contacting skin during a shaving action, said skin-contacting surface comprising said ring-like skin-supporting surface and said skin-shaving surface, wherein the skin-supporting surface at least partly surrounds the skin-shaving surface;
said assembled condition of the cutting unit is obtainable from said disassembled condition in an opened condition of the shaving head by manually bringing the retainer into a locked condition relative to other parts of the cutting unit, while said disassembled condition is obtainable from said assembled condition by manually bringing, in said opened condition of the shaving head, the retainer out of said locked condition;
the ring-like skin-supporting tilting member further comprises two opposed second suspension parts, which are located at mutually different locations along the ring-like skin-supporting tilting member, and via which, in said assembled condition, the external cutting member is suspended relative to the ring-like skin-supporting tilting member in a second tiltable manner about a second tilting axis, extending at a non-zero angle relative to said first tilting axis; and
said locked condition of the retainer in said assembled condition of the cutting unit corresponds to a relative orientation of the retainer within the cutting unit, which relative orientation of the retainer effectuates:
(i) that the external cutting member is suspended relative to the ring-like skin-supporting tilting member in said second tiltable manner; and
(ii) that the external cutting member is disabled to translate over more than a play distance of 2.0 millimeter in a direction transverse to said second tilting axis.

2. A shaving head according to claim 1 , wherein, in said assembled condition of the cutting unit, in which the retainer is in its locked condition, the retainer simultaneously follows:
the tilting movement of the skin-supporting tilting member relative to the shaving head main body in said first tiltable manner about said first tilting axis; and
the tilting movement of the external cutting member relative to the ring-like skin-supporting tilting member in said second tiltable manner about said second tilting axis.

3. A shaving head according to claim 2 , wherein said two opposed second suspension parts of the ring-like skin-supporting tilting member comprise a first snap connection structure co-operating with a second snap connection structure of the retainer, wherein said locked condition of the retainer in said assembled condition of the cutting unit is provided by a snap connection between the first snap connection structure and the second snap connection structure.

4. A shaving head according to claim 2 , wherein the cutting unit further comprises a ring-like additional tilting member, and wherein, as seen in the assembled condition of the cutting unit:
the ring-like additional tilting member is assembled together with the ring-like skin-supporting tilting member, the external cutting member, the internal cutting member and the retainer;
said ring-like additional tilting member is suspended relative to the ring-like skin-supporting tilting member in said second tiltable manner via said two opposed second suspension parts of the ring-like skin-supporting tilting member; and
said ring-like additional tilting member comprises a third snap connection structure co-operating with a fourth snap connection structure of the retainer, wherein said locked condition of the retainer in said assembled condition of the cutting unit is provided by a snap connection between the third snap connection structure and the fourth snap connection structure.

5. A shaving head according to claim 4 , wherein, as seen in the assembled condition of the cutting unit, the ring-like additional tilting member is prevented from contacting skin during the said shaving action.

6. A shaving head according to claim 1 , wherein, in said assembled condition of the cutting unit, in which the retainer is in its locked condition, the retainer follows the tilting movement of the skin-supporting tilting member relative to the shaving head main body in said first tiltable manner about said first tilting axis, but the retainer does not follow the tilting movement of the external cutting member relative to the ring-like skin-supporting tilting member in said second tiltable manner about said second tilting axis.

7. A shaving head according to claim 6 , wherein:
the ring-like skin-supporting tilting member comprises a first interlocking structure and the retainer comprises a second interlocking structure, said first interlocking structure co-operating with said second interlocking structure for realizing said locked condition of the retainer in said assembled condition of the cutting unit;
the two second suspension parts of the ring-like skin-supporting tilting member comprise two first abutment parts, respectively;
and wherein, as seen in said locked condition of the retainer in said assembled condition of the cutting unit:
the retainer comprises two second abutment parts, which are opposite to the two first abutment parts, respectively, with a first part of the external cutting member lying in-between one of the two first abutment parts and one of the two second abutment parts, opposite to said one first abutment part, and with a second part of the external cutting member lying in-between the other of the first abutment parts and the other of the second abutment part; and
said second tilting axis passes through said first part of the external cutting member and through said second part of the external cutting member, while abutment action of the first abutment parts and of the second abutment parts disable the external cutting member to translate in a direction transverse to said second tilting axis.

8. A shaving head according to claim 1 , wherein the first tilting axis and the second tilting axis are perpendicular relative to each other.

9. A shaving head according to claim 1 , wherein said movement of the drivable internal cutting member comprises rotative movement about an axis of rotation which is perpendicular to both the first tilting axis and the second tilting axis.

10. A shaving device for skin hairs, comprising:
a shaving device main body which

Assignees

• Koninklijke Philips Nv

Inventors

• Van Toor Johannes Hendrikus
• Oosterhoff Hans

Classifications

• B26B19/3853

  Housing or handle · CPC title

• B26B19/145 Primary

  Cutters being movable in the cutting head · CPC title

• B26B19/14 Primary

  of the rotary-cutter type; Cutting heads therefor; Cutters therefor (B26B19/04 takes precedence) · CPC title