Blade set, hair cutting appliance, and related manufacturing method

Patent metadata

Field	Value
Publication number	US-10124498-B2
Application number	US-201515303842-A
Country	US
Kind code	B2
Filing date	Apr 8, 2015
Priority date	Apr 18, 2014
Publication date	Nov 13, 2018
Grant date	Nov 13, 2018

Abstract

The present invention relates to a hair cutting appliance and to a blade set for a hair cutting appliance including a blade set having a stationary blade constructed having a first wall portion and a second wall portion that define therebetween a guide slot, a movable cutter blade received at the guide slot, and a transmitting member configured to be engaged by a driving member, and to actuate the movable cutter blade relative to the stationary blade, wherein the movable cutter blade is laterally inserted into the guide slot, wherein the transmitting member is fed to the stationary blade in a feed direction that is different from an insertion direction of the movable cutter blade, and wherein the transmitting member is coupled to a main portion of the movable cutter blade, such that the movable cutter blade is undetachably retained at the stationary blade. The disclosure further relates to a method for manufacturing a respective blade.

First claim

The invention claimed is:

1. A blade set for a hair cutting appliance, said blade set being arranged to be moved through hair in a moving direction to cut hair, said blade set comprising:
a stationary blade comprising:
a first wall portion arranged to serve as a skin facing wall when in operation,
a second wall portion at least partially offset from the first wall portion, wherein the first wall portion and the second wall portion define therebetween a guide slot, and
at least one toothed leading edge jointly formed by the first wall portion and the second wall portion, and

a movable cutter blade comprising:
at least one toothed leading edge, said movable cutter blade laterally inserted into the guide slot and movably arranged therein, wherein upon relative motion of the movable cutter blade with respect to the stationary blade, the at least one toothed leading edge of the movable cutter blade cooperates with corresponding teeth of the stationary blade to enable cutting of hair caught therebetween in a cutting action, and

a transmitting member configured to actuate the movable cutter blade relative to the stationary blade,
wherein the transmitting member is fed to the stationary blade in a feed direction that is different from an insertion direction of the movable cutter blade,
wherein the transmitting member is coupled to a main portion of the movable cutter blade, such that the movable cutter blade is undetachably retained at the stationary blade, and
wherein a main sheet metal portion of the movable cutter blade, and the transmitting member jointly embrace a laterally extending retaining tab of the second wall portion of the stationary blade.

2. The blade set as claimed in claim 1 , wherein the movable cutter blade is inserted into the stationary blade in a lateral direction (Y), wherein the transmitting member is fed in a vertical direction (Z) that is basically perpendicular to the lateral direction (Y), and wherein the movable cutter blade is mounted at the stationary blade in a laterally movable manner.

3. The blade set as claimed in claim 1 , wherein the movable cutter blade and the transmitting member jointly define a securing opening, and wherein the retaining tab of the stationary blade is located in the securing opening.

4. The blade set as claimed in claim 1 , wherein the retaining tab of the stationary blade defines a lateral limit stop for the movable cutter blade.

5. The blade set as claimed in claim 1 , wherein at least one guide element of the second wall portion of the stationary blade, defines a longitudinal position of the movable cutter blade with respect to the stationary blade.

6. The blade set as claimed in claim 1 , wherein the movable cutter blade and the transmitting member are one of: bonded and positively locked, to each other in the mounted state.

7. The blade set as claimed in claim 1 , wherein the stationary blade is an integrally formed metal-plastic composite stationary blade, wherein the first wall portion is at least partially made from metal material, wherein the second wall portion is at least partially made from plastic material, wherein the at least one toothed leading edge of the stationary blade comprises a plurality of teeth, and wherein the first wall portion and the second wall portion are connected at a frontal end of the at least one leading edge, thereby forming tips of the teeth.

8. The blade set as claimed in claim 1 , wherein the stationary blade comprises a sheet metal insert component, and a plastic component bonded to the sheet metal insert component, wherein at least a central portion of the first wall portion is formed by the sheet metal metal component, wherein the plastic component and the sheet metal insert component ( 40 ) form an integrally formed part selected from the group consisting of insert-molded part, outsert-molded part and overmolded part.

9. An electrically powered hair cutting appliance, comprising a cutting head that is fitted with a blade set as claimed in claim 1 .

10. A method of manufacturing a blade set for a hair cutting appliance, comprising the steps of:
providing a stationary blade comprising:
at least one toothed leading edge,
a first wall portion, and
a second wall portion, wherein the second wall portion is at least partially offset from the first wall portion, such that the first wall portion and the second wall portion define therebetween a guide slot;

providing a movable cutter blade comprising at least one toothed leading edge;
inserting the movable cutter blade into the guide slot of the stationary blade; by passing the movable cutting blade through a lateral opening of the stationary blade;
providing a transmitting member to actuate the movable cutter blade for relative motion with respect to the stationary blade,
feeding the transmitting member to the stationary blade in a feed direction that is different from an insertion direction of the movable cutter blade;
connecting the transmitting member to a main portion of movable cutter blade wherein the movable cutter blade is retained at the stationary blade,
wherein the movable cutter blade and the transmitting member jointly embrace a laterally extending retaining tab, of the second wall portion of the stationary blade.

11. The method as claimed in claim 10 , wherein the step of inserting the movable cutter blade comprises:
inserting the movable cutter blade in a lateral direction (Y), and wherein the step of feeding the transmitting member comprises feeding the transmitting member in a vertical direction (Z) that is substantially perpendicular to the lateral direction (Y).

12. The method as claimed in claim 10 , wherein the movable cutter blade is connected at the stationary blade in a laterally movable manner, and wherein the movable cutter blade is secured against disengagement in the vertical direction (Z).

13. The method as claimed in claim 10 , wherein the step of connecting the movable cutter blade to the stationary blade further comprises:
engaging an engagement portion at the movable cutter blade and locking the transmitting member and the movable cutter blade in a positive-locking manner.

14. The method as claimed in claim 10 , wherein the step of connecting the movable cutter blade to the stationary blade further comprises:
bonding the transmitting member to the movable cutter blade.

15. The method as claimed in claim 14 , wherein the step of bonding further comprises:
laterally moving the movable cutter blade with respect to the stationary blade such that a lateral end portion of the movable cutter blade is accessible for a bonding device,
aligning the transmitting member and the movable cutter blade) such that respective bonding spots overlap each other, and
bonding the transmitting member to the movable cutter blade.

16. The blade set as claimed in claim 1 , wherein the transmitting member is configured to engage a drive mechanism.

Assignees

• Koninklijke Philips Nv

Inventors

• Sablatschan Siegfried

Classifications

• B26B19/042

  Long hair cutters or older types comprising a cutting grid · CPC title

• B26B19/3893

  Manufacturing of shavers or clippers or components thereof · CPC title

• B26B19/3846 Primary

  Blades; Cutters (B26B19/044, B26B19/141 take precedence) · CPC title