CN100592968C - Razor head driven in an oscillatory manner, lower cutter thereof and hair cutting method thereof - Google Patents
Razor head driven in an oscillatory manner, lower cutter thereof and hair cutting method thereof Download PDFInfo
- Publication number
- CN100592968C CN100592968C CN200480029287A CN200480029287A CN100592968C CN 100592968 C CN100592968 C CN 100592968C CN 200480029287 A CN200480029287 A CN 200480029287A CN 200480029287 A CN200480029287 A CN 200480029287A CN 100592968 C CN100592968 C CN 100592968C
- Authority
- CN
- China
- Prior art keywords
- cutting edge
- cutting
- bottom knife
- hair
- blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
- B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
- B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
- B26B19/044—Manufacture and assembly of cutter blocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
- B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
- B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Dry Shavers And Clippers (AREA)
Abstract
The invention relates to a lower cutter (1) for a razor head driven in an oscillatory manner. Said lower cutter (1) comprises a plurality of blades (3) that are respectively grouped into pairs of adjacent cutting edges (3), first cutting edges (4) for cutting hairs (9) being embodied on facing sides of the blades (3). The inventive lower cutter (1) is characterised in that second cutting edges (5)for cutting hairs (9) are embodied on opposing sides of the two blades (3) of a respective pair, said second cutting edges cutting less than the first cutting edges (4).
Description
Technical field
The present invention relates to the bottom knife of the cutter head that a kind of vibration that is used for shaver drives.The invention still further relates to razor tool tip and a kind of method that is used for hair cut that a kind of vibration that has this bottom knife drives in addition.
Background technology
The bottom knife of the cutter head that the vibration of shaver drives is used for working with hair cut with cutter one.Therefore the bottom knife relative motion of vibrating along the direction that is parallel to cutter and exerting pressure to cutter by certain extruding force in this case.Cutter for example is configured to the paper tinsel that shaves of boring a hole, and it has a plurality of hair inlet ports.Because by the hair inlet port not only hair but also parts of skin can both arrive the effective range of bottom knife, so produce skin irritatin or almost cut injured danger by existing with contacting of bottom knife.
For fear of above-mentioned adverse influence, advise that in JP 10-118358 A the such cutting edge distance of structure makes this distance less than the width between the hair inlet port of the paper tinsel that shaves between a pair of blade relative to each other of bottom knife.Constitute by having the transition zone of making than the material of friction impedance on the relative face of the cutting edge of this external blade.When blade contacted with hair or with skin in the zone of transition zone, blade was crossed them and is sliped off and do not cut.If blade contacts with hair in the scope of cutting edge in contrast, hair is cut sword collection and cutting so.The stimulation of skin or injuredly avoided largely in this case, by skin always improve by transition zone and since the mutual small distance of cutting edge closely do not contact with cutting edge.
Although shaver known from JP 10-118358 A can shave with relatively protecting skin.The destruction of the fact below but the careful property that shaves is subjected to, promptly blade always only can not cause cutting short of hair in the part of side cutting and the therefore contact between blade and hair.
Summary of the invention
Task according to the present invention is, realizes as far as possible thoroughly and simultaneously protecting shaving of skin.
The bottom knife of the cutter head that the vibration that is used for shaver according to the present invention drives has a plurality of blades, and these blades are grouped into paired adjacent edge, wherein are configured for first cutting edge of hair cut on the side relative to each other of blade.Bottom knife according to the present invention is characterised in that, each two right blade mutually away from the side on constitute second cutting edge that is used for hair cut, this second cutting edge has the cutting effect littler than first cutting edge.
The present invention has can obtain the advantage that very thoroughly shaves under the situation that does not influence the comfortableness that shaves.Although particularly advantageous in this case is that the structure on two sides of blade is different and should this obtainable protection skin, the both sides of blade help the result that shaves.
In a preferred embodiment according to bottom knife of the present invention, first cutting edge always has the first cutting basil between the plane that constitutes first cutting edge, and it is less than the second cutting basil of second cutting edge.The first cutting basil constitutes acute angle and preferably about 45 degree especially.Preferably about 90 degree of the second cutting basil.In addition advantageously, first cutting edge and/or second cutting edge have the sword radius of maximum 5 μ m.Also advantageously, in the distance between first cutting edge in succession less than the distance between second cutting edge in succession.Under this condition, skin is littler than what swell between second cutting edge in succession between first cutting edge in succession.This causes again, and the skin by the first sharp relatively cutting edge exists hardly to be stimulated or injured danger.Especially, be that about 250 μ m and the distance between second cutting edge in succession are about 800 μ m in the distance between first cutting edge in succession.
The invention still further relates to the cutter head that a kind of vibration that is used for shaver drives in addition, it is equipped with according to bottom knife of the present invention.Can have the cutter that has a plurality of hair inlet ports according to cutter head of the present invention, the maximum extension of the direction of motion that is parallel to bottom knife of this hair inlet port is greater than in the distance of first cutting edge in succession of bottom knife and/or less than the distance at second cutting edge in succession of bottom knife.Therefore certain protuberance of the hair inlet port skin by cutter allows, and can be cut so be close to very much the hair of skin.Avoid the tight contact between skin and cutting edge simultaneously, thereby can avoid the stimulation of skin or injured.
Come the method for hair cut to realize according to of the present invention by means of the vibration relative motion between bottom knife and cutter by following mode, at least some hairs are at first cut by first cutting edge of identical bottom knife then by the cutting of second cutting edge, and wherein first cutting edge has than the better cutting effect of second cutting edge.
Owing to cut short in advance by second cutting edge, the possibility of using following bottom knife is provided, first cutting edge leans on mutually in this bottom knife very near and its therefore can protect very much skin ground to work.The hair of cutting short in advance can stretch in the close clearance between first cutting edge equally without a doubt and be cut with being close to very much skin there.Consider as close as possible skin ground hair cut, advantage is that first cutting edge inscribes indenture when contacting with hair in hair and hair always is cut in the indenture zone.
Description of drawings
According to embodiment illustrated in the accompanying drawings the present invention is shown at length below.
Fig. 1 illustrates the schematic cross sectional views that is used for several parts of the embodiment of the cutter head of the shaver of formation according to the present invention;
Fig. 2 illustrates the zoomed-in view of the exterior contour of the blade that is used for the bottom knife that constitutes at Fig. 1;
Fig. 3 illustrates snapshot according to the operating period of cutter head of the present invention with schematic cross sectional views; And
Fig. 4 illustrates another snapshot according to the operating period of cutter head of the present invention with the view corresponding to Fig. 3.
The specific embodiment
Fig. 1 illustrates the schematic cross sectional views that is used for several parts of the embodiment of the cutter head of the shaver of formation according to the present invention.The bottom knife 1 and the paper tinsel 2 that shaves are shown, and bottom knife 1 is near this paper tinsel that shaves.For the selected cut surface of view is parallel to direction in the bottom knife 1 and the relative motion between the paper tinsel 2 of shaving, they illustrate in the mode of dissecing respectively.Bottom knife 1 has a plurality of blades 3, and these blades are with the order setting of rule.Each blade 3 provides first cutting edge 4 and second cutting edge 5, and these two cutting edges are separately positioned on blade 3 side relative to each other.The geometry of blade 3 at length illustrates in Fig. 2.
Cutting edge 4 and 5 is respectively so directed, makes that two first cutting edges 4 and two second cutting edges 5 replace in succession respectively in the mutual continuous blade 3 of bottom knife 1.This means that blade 3 always is grouped into paired adjacent edge 3, wherein constitute on the side relative to each other first cutting edge 4 and mutually away from the side on constitute second cutting edge 5.Constitute distance A 1 between first cutting edge 4 in succession, this distance is less than the distance A 2 between second cutting edge 5 in succession.Preferably, the distance A 1 between first cutting edge 4 in succession is about 250 μ m, and the distance A 2 between second cutting edge 5 in succession is about 800 μ m.Bottom knife 1 can for example be electroplated and mould by means of a series of different technology manufacturings, corrosion technology, compacting, punching press or process of lapping.
The paper tinsel 2 that shaves shown in Figure 1 is made up of the support of bar 6, and these bars surround a plurality of hair inlet ports 7.The maximum transversal of hair inlet port 7 that is parallel to the direction of motion of bottom knife 1 stretches A3 so to be selected especially, makes them greater than in the distance A 1 between first cutting edge 4 in succession of bottom knife 1 and less than the distance A 2 between second cutting edge 5 in succession at bottom knife 1.Typically, shave that to stretch A3 be about 500 μ m for the maximum transversal of hair inlet port 7 of paper tinsel 2.In the process of shaving, bottom knife 1 in the zone of cutting edge 4 and 5, press close to shave paper tinsel 2 bar 6 and carry out oscillating movement with respect to the paper tinsel 2 that shaves, this direction of motion is parallel to the paper tinsel 2 and representing by double-head arrow of shaving in Fig. 1.The detailed description of the process that shaves will be according to Fig. 3 and Fig. 4 explanation.
Fig. 2 illustrates the zoomed-in view of the exterior contour of the blade 3 that is used for the bottom knife 1 that constitutes at Fig. 1.First cutting edge 4 of blade 3 will constitute by two planes, these two planes surround the first cutting basil α less than 90 degree mutually, that is to say, first cutting edge 4 is configured to acute angle.Preferably the first cutting basil α is about 45 degree.Second cutting edge 5 of blade 3 has the second cutting basil β of preferably about 90 degree.The second cutting basil β can be different from preferred value in principle.But effectively under any circumstance, the second cutting basil β is greater than the first cutting basil α, so second cutting edge 5 has the cutting effect littler than first cutting edge 4. Cutting edge 4 and 5 sword radius (Kantenradien) always are arranged in the scope of 5 μ m or lower scope.
Fig. 3 illustrates snapshot according to the operating period of cutter head of the present invention with schematic cross sectional views.Be illustrated in the zone of circumference of hair inlet port 7 of the paper tinsel 2 that shaves and a pair of blade that on this zone, moves 3 of bottom knife 1.In selected view, a skin 8 that has hair 9 is shown below the hair inlet port 7 of paper tinsel 2 that shaves.The compressing of paper tinsel 2 owing to shave, skin 8 swells so doughtily by the hair inlet port 7 of the paper tinsel 2 that shaves, and makes it outstanding on incised layer 10 on the width, and the cutting edge 4 of blade and 5 moves in this incised layer 10.Shown in the moment, the blade 3 of bottom knife 1 is along from right to left arrow direction, wherein the blade 3 of front directly contacts skin 8 with second cutting edge 5.In the further motion of bottom knife 1, the blade 3 of front slips over cutaneous protuberance with second cutting edge 5 from above and they extrude from the hair inlet port 7 of the paper tinsel 2 that shaves.Because the second bigger cutting basil β of second cutting edge 5 can not cause the injured of skin 8 or stimulation in this case.At last, the blade 3 of front runs into the hair 9 in the hair inlet port 7 that extend into the paper tinsel 2 that shaves with second cutting edge 5.The blade 3 of front moves hair 9 with second cutting edge 5, does not inscribe indenture on this hair, up to the bar 6 of the hair inlet port 7 that is adjacent to the paper tinsel 2 that shaves.In this case, second cutting edge 5 slides on hair 9 greatly.When running into the bar 6 of the paper tinsel 2 that shaves, hair 9 is cut off by second cutting edge 5.Because sliding intermittently, cutting always do not occur in this position that second cutting edge 5 contacts with hair 9 for the first time, but the position spaced apart with skin 8.
Fig. 4 illustrates another snapshot according to the operating period of cutter head of the present invention with the view corresponding to Fig. 3.This snapshot relates to the time point that first cutting edge 4 of blade 3 afterwards contacts with hair 9.In when contact, first cutting edge 4 of blade 3 is afterwards inscribed indenture in hair 9, makes hair 9 be fixed on afterwards the blade 3.Because blade 3 in this process afterwards directly is attached on the skin 8 with first cutting edge 4, first cutting edge 4 is very inscribed indenture near skin 8 ground in hair 9.Hair 9 and blade afterwards 3 are transferred to the bar 6 of the paper tinsel 2 that shaves together, and are cut on first position contacting by first cutting edge 4 of afterwards blade 3 there, and therefore are close to very much skin 8.Compare with second cutting edge 5, the obvious shorter length of cut that obtains by first cutting edge 4 so realizes,, inscribes indenture and can not be from wherein slipping over therein by first cutting edge 4 when contact hair 9 first time that is.In addition because the structure of the acute angle of first cutting edge 4 only requires very little cutting force to be used for cutting off hair 9 and in the stressed zone of hair 9 localization, so the hair of having been cut short 9 can be cut short effectively subsequently.Relative with it, utilize the cutting force that the cutting process of second cutting edge 5 has relatively high expectations and cause stressed zone bigger in hair 9.The hair of clamping between second cutting edge 5 of the bar 6 of this paper tinsel 2 that will cause shaving and blade 3 in the hair of having cut short previously 99 is not jumped out from the hair inlet port 7 of the paper tinsel 2 that shaves with cutting.In this case, on short tip lengths, do not cut.Therefore the hair of having cut short 9 is still cut off by first cutting edge 4 reliably, because the combination of first and second cutting edges 4 and 5 produces very effective and protects shaving of skin simultaneously.
Claims (13)
1. the bottom knife of the cutter head that drives of a vibration that is used for shaver, have a plurality of blades (3), these blades are grouped into paired adjacent edge (3), wherein on the side relative to each other of blade (3), be configured for first cutting edge (4) of hair cut (9), it is characterized in that, each right two blade (3) mutually away from the side on constitute second cutting edge (5) that is used for hair cut (9), this second cutting edge has than the littler cutting effect of first cutting edge (4).
2. bottom knife as claimed in claim 1, wherein first cutting edge (4) always has the first cutting basil (α) between the plane that constitutes first cutting edge (4), the second cutting basil (β) that it always has less than second cutting edge (5).
3. bottom knife as claimed in claim 2, wherein the first cutting basil (α) constitutes acute angle.
4. bottom knife as claimed in claim 3, wherein the acute angle of the first cutting basil (α) formation is about 45 degree.
5. as each described bottom knife among the claim 2-4, wherein the second cutting basil (β) is about 90 degree.
6. bottom knife as claimed in claim 1, wherein first cutting edge (4) and/or second cutting edge (5) have the sword radius of maximum 5 μ m.
7. bottom knife as claimed in claim 1, wherein in the distance (A1) between first cutting edge (4) in succession less than the distance (A2) between second cutting edge (5) in succession.
8. bottom knife as claimed in claim 1, wherein the distance (A1) between first cutting edge (4) in succession is about 250 μ m.
9. bottom knife as claimed in claim 1, wherein the distance (A2) between second cutting edge (5) in succession is about 800 μ m.
10. the cutter head that the vibration that is used for shaver drives is characterized in that, described cutter head has as described above each described bottom knife (1) in the claim.
11. cutter head as claimed in claim 10, wherein said cutter head has the cutter (2) that has a plurality of hair inlet ports (7), and the maximum extension (A3) that is parallel to bottom knife (1) direction of motion of this hair inlet port is greater than the distance (A1) of first cutting edge (4) in succession of bottom knife (1) and/or less than the distance (A2) of second cutting edge (5) in succession of bottom knife (1).
12. method of coming hair cut (9) by means of the relative motion of the vibration between bottom knife (1) and cutter (2), it is characterized in that, at least some hairs (9) are at first cut by first cutting edge (4) of identical bottom knife (1) then by second cutting edge (5) cutting, and wherein first cutting edge has than the better cutting effect of second cutting edge (5).
13. method as claimed in claim 12, wherein first cutting edge (4) is being inscribed indenture with hair (9) when contacting and hair (9) always is cut in the indenture zone in hair (9).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10352831.8 | 2003-11-12 | ||
| DE2003152831 DE10352831B4 (en) | 2003-11-12 | 2003-11-12 | Lower blade for an oscillating driven shaving head of a razor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1863649A CN1863649A (en) | 2006-11-15 |
| CN100592968C true CN100592968C (en) | 2010-03-03 |
Family
ID=34585010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200480029287A Expired - Fee Related CN100592968C (en) | 2003-11-12 | 2004-11-04 | Razor head driven in an oscillatory manner, lower cutter thereof and hair cutting method thereof |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4777253B2 (en) |
| CN (1) | CN100592968C (en) |
| DE (1) | DE10352831B4 (en) |
| WO (1) | WO2005046947A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009031627A1 (en) * | 2009-07-03 | 2011-01-05 | Braun Gmbh | Under knife assembly for dry shaver |
| DE102009031626A1 (en) * | 2009-07-03 | 2011-01-05 | Braun Gmbh | Shaving unit for a dry shaver with skin protectors |
| EP3663057A1 (en) * | 2018-12-05 | 2020-06-10 | Koninklijke Philips N.V. | Cutter assembly for a hair cutting appliance |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT386149B (en) * | 1982-02-12 | 1988-07-11 | Philips Nv | REVERSIBLE DRIVABLE KNIFE FOR DRY SHAVERS |
| JPS62104761A (en) * | 1985-10-31 | 1987-05-15 | Seiko Instr & Electronics Ltd | Recorder |
| AT395125B (en) * | 1991-01-18 | 1992-09-25 | Philips Nv | ELECTRIC DRY SHAVER |
| JPH06142345A (en) * | 1992-11-13 | 1994-05-24 | Matsushita Electric Works Ltd | Reciprocation type electric razor |
| US5473818A (en) * | 1992-11-25 | 1995-12-12 | Matsushita Electric Works, Ltd. | Reciprocatory dry shaver |
| JPH06218152A (en) * | 1993-01-26 | 1994-08-09 | Matsushita Electric Works Ltd | Reciprocating type electric razor |
| JPH07265558A (en) * | 1994-03-31 | 1995-10-17 | Matsushita Electric Works Ltd | Inner cutter in reciprocating type electric shaver and manufacture thereof |
| JPH10118358A (en) * | 1996-10-18 | 1998-05-12 | Tec Corp | Electric razor |
| JP2002058887A (en) * | 2000-08-22 | 2002-02-26 | Matsushita Electric Works Ltd | Edge for electric razor |
-
2003
- 2003-11-12 DE DE2003152831 patent/DE10352831B4/en not_active Expired - Fee Related
-
2004
- 2004-11-04 CN CN200480029287A patent/CN100592968C/en not_active Expired - Fee Related
- 2004-11-04 WO PCT/EP2004/012456 patent/WO2005046947A1/en active Application Filing
- 2004-11-04 JP JP2006538739A patent/JP4777253B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007510480A (en) | 2007-04-26 |
| DE10352831A1 (en) | 2005-06-23 |
| JP4777253B2 (en) | 2011-09-21 |
| DE10352831B4 (en) | 2007-06-14 |
| WO2005046947A1 (en) | 2005-05-26 |
| CN1863649A (en) | 2006-11-15 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100303 Termination date: 20121104 |