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Title:
IMPROVED EXTERNAL KNIFE STRUCTURE OF RECIPROCATING ELECTRIC SHAVER, AND PROCESSING METHOD OF CERAMIC INNER KNIFE AND EXTERNAL KNIFE
Document Type and Number:
WIPO Patent Application WO/2014/110932
Kind Code:
A1
Abstract:
An improved external knife structure of a reciprocating electric shaver. An external knife (1), which appears in a strip shape by bending a sheet, is horizontally installed at a head of the shaver and is provided with a top surface (11) and a side surface (12). The top surface (11) comprises installation areas (13) at two ends and a middle knife edge area (14) that is reduced in thickness from inside. In the installation areas (13) at the two ends of the top surface, a reinforced convexity (15) is formed by direct stamping. In the middle knife edge area (14) of the top surface (11), several slotted holes are arranged to form a blade (16). A processing method of the external knife is: bending the sheet into a strip shape to prepare the top surface (11) and the side surface (12), forming the reinforced convexity (15) by direct stamping at edge positions of the two ends of the top surface (11), processing and reducing inside thickness of the top surface (11) of the external knife in the strip shape, working out slotted holes in a middle of the top surface (11) to prepare the blade that forms the middle knife edge area (14), making the two ends of the top surface (11) as installation areas (13), and finally polishing an external surface and fine grinding an internal surface. Processing is easier, a structure is simpler, strength is higher, a knife edge area is prevented from deforming, a quality of the shaver is ensured, a hair inlet direction is smooth without a turning, and skin feel is good during shaving.

Inventors:
LIU LAISHENG (CN)
Application Number:
PCT/CN2013/086660
Publication Date:
July 24, 2014
Filing Date:
November 07, 2013
Export Citation:
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Assignee:
XIAMEN LAIRY ELECTRIC APPLIANCES CO LTD (CN)
International Classes:
B26B19/04
Foreign References:
CN201102255Y2008-08-20
CN201483519U2010-05-26
CN201320767Y2009-10-07
CN1833832A2006-09-20
CN103056893A2013-04-24
CN1727134A2006-02-01
JP4953233B22012-06-13
EP0189335B11988-10-12
Attorney, Agent or Firm:
XIAMEN SHINHWA PATENT & TRADEMARK AGENCY CO., LTD. (CN)
厦门市新华专利商标代理有限公司 (CN)
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