EP4067023B1 - Rasiererkopf - Google Patents

Rasiererkopf

Info

Publication number
EP4067023B1
EP4067023B1 EP20928239.1A EP20928239A EP4067023B1 EP 4067023 B1 EP4067023 B1 EP 4067023B1 EP 20928239 A EP20928239 A EP 20928239A EP 4067023 B1 EP4067023 B1 EP 4067023B1
Authority
EP
European Patent Office
Prior art keywords
contact portion
skin contact
side wall
razor head
highest point
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.)
Active
Application number
EP20928239.1A
Other languages
English (en)
French (fr)
Other versions
EP4067023C0 (de
EP4067023A1 (de
EP4067023A4 (de
Inventor
Xiangrong Ren
Chi REN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wenzhou Meibao Technology Co Ltd
Original Assignee
Wenzhou Meibao Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wenzhou Meibao Technology Co Ltd filed Critical Wenzhou Meibao Technology Co Ltd
Publication of EP4067023A1 publication Critical patent/EP4067023A1/de
Publication of EP4067023A4 publication Critical patent/EP4067023A4/de
Application granted granted Critical
Publication of EP4067023B1 publication Critical patent/EP4067023B1/de
Publication of EP4067023C0 publication Critical patent/EP4067023C0/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/40—Details or accessories
    • B26B21/4012—Housing details, e.g. for cartridges
    • B26B21/4031—Housing details, e.g. for cartridges characterised by special geometric shaving parameters, e.g. blade span or exposure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/40—Details or accessories
    • B26B21/4012—Housing details, e.g. for cartridges
    • B26B21/4018—Guard elements

Definitions

  • the present invention relates to the technical field of shaving, and more particularly to a razor head.
  • a razor head 300 includes a razor head frame 310 and blades 320.
  • the razor head frame 310 includes a front side wall 310a, a rear side wall 310b, and a connecting side wall 310c connecting the front side wall 310a to the rear side wall 310b.
  • the front side wall 310a, the rear side wall 310b and the connecting side wall 310c together define an accommodating space 310d, and the blades 320 are arranged in the accommodating space 310d.
  • cutting edges 321 of the blades 320 face the front side wall 310a, and a top surface of the front side wall 310a is provided with a skin contact portion 311 that contacts the skin during shaving.
  • the height of the skin contact portion 311 decreases from the back to the front of the razor head frame 310 to ensure that the cutter head 300 can slide along user's skin more smoothly during shaving. Since the height of the skin contact portion 311 decreases from the back to the front of the razor head frame 310, the highest point N of the skin contact portion 311 is disposed backward to be close to the cutter edges 321. Thus, a distance D' between the highest point N and the cutter edges 321 is reduced, the skin 200 pressed by the highest point N of the skin contact portion 311 and the cutter edges 321 will be greatly arched during shaving.
  • EP3453499A1 discloses a shaving razor including a cartridge including a housing having a front portion and a rear portion, a guard at the front portion of said housing and a cap at the rear portion of the housing and a blade array located in-between the guard and cap.
  • One objective of the present invention is to provide a razor head that improves shaving comfort and has good shaving effect.
  • a razor head which includes a razor head frame and a razor blade.
  • the razor head frame includes a front side wall, a rear side wall and a connecting side wall connected to the front side wall and the rear side wall.
  • the connecting side wall, the front side wall and the rear side wall together enclose an accommodating space, the razor blade is located in the accommodating space, and a blade edge of the razor blade faces the front side wall.
  • a rear part of the front side wall adjacent to the blade edge is provided with a first skin contact portion, and a front part of the front side wall away from the blade edge is provided with a second skin contact portion.
  • a highest point of the second skin contact portion is higher than a highest point of the first skin contact portion.
  • the highest point of the first skin contact portion is higher than the blade edge, and the highest point of the first skin contact portion is located below a plane jointly defined by the highest point of the second skin contact portion and the blade edge.
  • the second skin contact portion has an arc-shaped structure with a convex middle portion along a front-rear direction of the razor head frame.
  • the razor head further includes a protective structure, the protective structure is arranged for covering the front part of the front side wall, and the second skin contact portion is formed around a highest point of the protective structure.
  • the second skin contact portion has an arc-shaped structure with a convex middle portion along a front-rear direction of the razor head frame.
  • an outer contour of a cross section of the second skin contact portion is an arc, and the height of the arc increases first and then decreasing gradually along the front-rear direction of the razor head frame.
  • a rear end of the arc adjacent to the first skin contact portion is extended and then intersects the first skin contact portion.
  • the razor head further includes a lubrication strip mounted on the rear side wall, and the lubrication strip has a third skin contact portion whose highest point is lower than the blade edge.
  • the razor head has at least two razor blades, and the razor blades are spaced side by side along the front-rear direction of the razor head frame.
  • the highest point of the second skin contact portion and the blade edge of the razor blade adjacent to the first skin contact portion together defines the plane.
  • a cross section of the first skin contact portion is a straight line segment.
  • an intersection of the part of the front side wall for defining the accommodating space and the first skin contact portion is a round-chamfered structure.
  • the straight line segment is tangent to an outer contour of a cross section of the round-chamfered structure.
  • the protective structure covers the front part of the front side wall away from the blade edge, and the rear part of the front side wall adjacent to the blade edge is the bare first skin contact portion that can contact with the skin.
  • the second skin contact portion that can contact the skin is defined around the highest point of the protective structure.
  • the highest point of the second skin contact portion is higher than the highest point of the first skin contact portion.
  • the highest point of the first skin contact portion is higher than the blade edge, and the highest point of the first skin contact portion is also located below the plane jointly defined by the highest point of the second skin contact portion and the blade edge. Therefore, during shaving, the blade edge and the highest point of the second skin contact portion press against the skin, and the skin length between the blade edge and the highest point of the second skin contact portion is extended.
  • the highest point of the first skin contact portion is also located below the plane jointly defined by the highest point of the second skin contact portion and the blade edge, so the highest point of the first skin contact portion properly supports the skin between the blade edge and the highest point of the second skin contact portion, and the first skin contact portion makes sure the skin supported is higher than the blade edge. Therefore, the angle between the blade edge and the arched skin is increased thereby reducing skin scratch and improving shaving comfort.
  • a razor head 100 includes a razor head frame 10, a razor blade 20 and a protective structure 30.
  • the razor head frame 10 includes a front side wall 10a, a rear side wall 10b and a connecting side wall 10c connected to the front side wall 10a and the rear side wall 10b.
  • the connecting side wall 10c, the front side wall 10a and the rear side wall 10b together enclose an accommodating space 10d.
  • the connecting side wall 10c, the front side wall 10a and the rear side wall 10b together to form an integrated structure, for example, but it is not limited to make them form the integrated structure by the injection molding process, so the connecting side wall 10c, the front side wall 10a and the rear side wall 10b are inseparable, which increases the strength of the razor head frame 10 on the one hand and facilitates the manufacture of the razor head frame 10 on the other hand.
  • the razor blade 20 is located in the accommodating space 10d which provides a space for installation and work of the razor blade 20.
  • a blade edge 21 of the razor blade 20 faces the front side wall 10a.
  • the protective structure 30 covers a front part of the front side wall 10a away from the blade edge 21.
  • an outer contour of a cross section of the front part has a horizontal line segment and a vertical line segment on the left, has an arc segment in the middle, and has a horizontal line segment on the right, but not limited to this.
  • the protective structure 30 covers the front part of the front side wall 10a in various ways.
  • the protective structure 30 can be integrally formed with the front side wall 10a by injection molding, or fixed with the front side wall 10a by gluing, or fixed with the front side wall 10a by ultrasonic welding, so that the protective structure 30 covers the front part of the front side wall 10a, but not limited thereto.
  • a rear part of the front side wall 10a adjacent to the blade edge 21 forms an exposed first skin contact portion 11 that can be in contact with the skin, and a second skin contact portion 30a that will be in contact with the skin is formed around a highest point A of the protective structure 30. Understandably, the highest point of the protective structure 30 and a highest point of the second skin contact portion 30a are the same.
  • the highest point A of the second skin contact portion 30a is higher than a highest point E of the first skin contact portion 11, and the highest point E of the first skin contact portion 11 is higher than the blade edge 21.
  • the highest point E of the first skin contact portion 11 is also located below a plane P jointly defined by the highest point A of the second skin contact portion 30a and the blade edge 21, as shown in Fig. 1 .
  • the razor head 100 further includes a lubrication strip 40 mounted on the rear side wall 10b.
  • a lubrication strip 40 mounted on the rear side wall 10b.
  • cross-section of the lubrication strip 40 is "T" shape, and the lubrication strip 40 has a third skin contact portion 41 whose highest point F is lower than the blade edge 21, which increases shaving comfort, as shown in Fig. 1 .
  • H1 represents the height where the blade edge 21 is located
  • H2 represents the height where the highest point F of the third skin contact portion 41 is located.
  • the second skin contact portion 30a has an arc-shaped structure with a convex middle portion along a front-rear direction of the razor head frame 10.
  • an outer contour of a cross section of the second skin contact portion 30a is an arc 31, and the height of the arc 31 increases first and then decreases gradually along the front-rear direction of the razor head frame 10.
  • the height of the arc 31 increases first and then decreases gradually from a rear end B adjacent to the first skin contact portion 11 to a front end C away from the first skin contact portion 11.
  • the arc 31 is adjacent to an extension line 32 of the first skin contact portion 11 (the extension line 32 is shown by a dotted line in a partial enlarged view of Fig. 1 ) and intersects the first skin contact portion 11, so that the first skin contact portion 11 can properly support the skin 200 pressed between the second skin contact portion 30a and the blade edge 21.
  • the skin 200 between the second skin contact portion 30a and the blade edge 21 is less arched, so the skin 200 is less scratched, as shown in Figs. 2 and 3 .
  • At least two razor blades 20 are arranged side by side at a distance along the front-rear direction of the razor head frame 10.
  • the highest point A of the second skin contact portion 30a and the blade edge 21 of the razor blade 20 adjacent to the first skin contact portion 11 together defines the plane P, so as to improve shaving efficiency by means of the plurality of razor blades 20.
  • a cross section of the first skin contact portion 11 is a straight segment 11a.
  • An intersection of the part 12 of the front side wall 10a used to define the accommodating space 10d and the first skin contact portion 11 is a round-chamfered structure 13.
  • the straight line segment 11a is tangent to an outer contour of a cross section of the round-chamfered structure 13 to ensure that the skin 200 slides toward the blade edge 21 more smoothly.
  • the protective structure 30 covers the front part of the front side wall 10a away from the blade edge 21, and the rear part of the front side wall 10a adjacent to the blade edge 21 is the bare first skin contact portion 11 that can contact with the skin.
  • the second skin contact portion 30a that can contact the skin is formed around the highest point A of the protective structure 30.
  • the highest point A of the second skin contact portion 30a is higher than the highest point E of the first skin contact portion 11.
  • the highest point E of the first skin contact portion 11 is higher than the blade edge 21.
  • the highest point E of the first skin contact portion 11 is also located below the plane P jointly defined by the highest point A of the second skin contact portion 30a and the blade edge 21.
  • the skin 200 is pressed against the highest point A of the second skin contact part 30a and the blade edge 21, and the distance D of the skin 200 between the blade edge 21 and the highest point A of the second skin contact part 30a is extended (see Fig. 3 ). Namely the distance D is greater than D' shown in Fig. 5 . Correspondingly, deformation amount of the skin 200 between the blade edge 21 and the highest point A of the second skin contact portion 30a is reduced.
  • the highest point E of the first skin contact portion 11 is also located below the plane P jointly defined by the highest point A of the second skin contact portion 30a and the blade edge 21, so the highest point E of the first skin contact portion 11 properly supports the skin 200 between the blade edge 21 and the highest point A of the second skin contact portion 30a, and the first skin contact portion 11 makes sure the skin 200 supported is higher than the blade edge 21. Therefore, the angle ⁇ between the blade edge 21 and the arched skin 200 is increased, and the angle ⁇ is greater than the angle ⁇ shown in Fig. 5 , thereby reducing skin scratch and improving shaving comfort.
  • the razor head 100 includes the razor head frame 10' and the razor blade 20.
  • the razor head frame 10' includes a front side wall 10a', a rear side wall 10b, a connecting side wall 10c connected to the front side wall 10a' and the rear side wall 10b.
  • the connecting side wall 10c, the front side wall 10a' and the rear side wall 10b jointly enclose the accommodating space 10d.
  • the razor blade 20 is located in the accommodating space 10d, and the blade edge 21 of the razor blade 20 faces the front side wall 10a'.
  • the rear part of the front side wall 10a' adjacent to the blade edge 21 has a first skin contact portion 11 that can contact with the skin, and the front part of the front side wall 10a' away from the blade edge 11 has a second skin contact portion 30a that can contact the skin.
  • the highest point A of the second skin contact portion 30a is higher than the highest point E of the first skin contact portion 11, the highest point E of the first skin contact portion 11 is higher than the blade edge 21, and the highest point E of the first skin contact portion 11 is also located below the plane P jointly defined by the highest point A of the second skin contact portion 30a and the blade edge 21.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Dry Shavers And Clippers (AREA)

Claims (9)

  1. Ein Rasierkopf (100), umfassend einen Rasierkopfrahmen (10) und eine Rasierklinge (20), wobei der Rasierkopfrahmen (10) eine vordere Seitenwand (10a), eine hintere Seitenwand (10b) und eine verbindende Seitenwand (10c) umfasst, die mit der vorderen Seitenwand (10a) und der hinteren Seitenwand (10b) verbunden ist, wobei die verbindende Seitenwand (10c), die vordere Seitenwand (10a) und die hintere Seitenwand (10b) gemeinsam einen Aufnahmeraum (10d) umschließen, wobei sich die Rasierklinge (20) im Aufnahmeraum (10d) befindet und eine Klingenschneide (21) der Rasierklinge (20) zur vorderen Seitenwand (10a) weist;
    wobei ein hinterer Teil der vorderen Seitenwand (10a), der an die Klingenschneide (21) angrenzt, mit einem ersten Hautkontaktbereich (11) versehen ist, ein vorderer Teil der vorderen Seitenwand (10a), der von der Klingenschneide (21) entfernt ist, mit einem zweiten Hautkontaktbereich (30a) versehen ist, wobei ein höchster Punkt (A) des zweiten Hautkontaktbereichs (30a) höher ist als ein höchster Punkt (E) des ersten Hautkontaktbereichs (11), der höchste Punkt (E) des ersten Hautkontaktbereichs (11) höher ist als die Klingenschneide (21), und der höchste Punkt (E) des ersten Hautkontaktbereichs (11) sich unterhalb einer Ebene (P) befindet, die gemeinsam durch den höchsten Punkt (A) des zweiten Hautkontaktbereichs (30a) und die Klingenschneide (21) definiert ist;
    dadurch gekennzeichnet, dass der zweite Hautkontaktbereich (30a) eine bogenförmige Struktur mit einem konvexen Mittelabschnitt entlang einer Vorder-Hinten-Richtung des Rasierkopfrahmens (10) aufweist.
  2. Der Rasierkopf nach Anspruch 1, weiterhin umfassend eine Schutzstruktur (30), wobei die Schutzstruktur (30) zum Abdecken des vorderen Teils der vorderen Seitenwand (10a) angeordnet ist, und der zweite Hautkontaktbereich (30a) um einen höchsten Punkt der Schutzstruktur (30) herum ausgebildet ist.
  3. Der Rasierkopf nach Anspruch 1, wobei ein Außenumriss eines Querschnitts des zweiten Hautkontaktbereichs (30a) ein Bogen (31) ist, und wobei die Höhe des Bogens (31) zunächst ansteigt und dann entlang der Vorder-Hinten-Richtung des Rasierkopfrahmens (10) allmählich abnimmt.
  4. Der Rasierkopf nach Anspruch 3, wobei ein hinteres Ende (B) des Bogens (31), das an den ersten Hautkontaktbereich (11) angrenzt, verlängert ist und dann den ersten Hautkontaktbereich (11) schneidet.
  5. Der Rasierkopf nach Anspruch 1, weiterhin umfassend einen Gleitstreifen (40), der an der hinteren Seitenwand (10b) montiert ist, wobei der Gleitstreifen (40) einen dritten Hautkontaktbereich (40) aufweist, dessen höchster Punkt (F) niedriger ist als die Klingenschneide (21).
  6. Der Rasierkopf nach Anspruch 1, wobei der Rasierkopf (100) mindestens zwei Rasierklingen (20) umfasst, wobei die Rasierklingen (20) entlang einer Vorder-Hinten-Richtung des Rasierkopfrahmens (10) nebeneinander angeordnet sind, und wobei der höchste Punkt (A) des zweiten Hautkontaktbereichs (30a) und die Klingenschneide (21) der Rasierklinge (20), die dem ersten Hautkontaktbereich (11) benachbart ist, gemeinsam die Ebene (P) definieren.
  7. Der Rasierkopf nach Anspruch 1, wobei ein Querschnitt des ersten Hautkontaktbereichs (11) ein gerades Liniensegment (11a) ist.
  8. Der Rasierkopf nach Anspruch 7, wobei ein Schnittpunkt eines Teils (12) der vorderen Seitenwand (10a), der den Aufnahmeraum (10d) definiert, und des ersten Hautkontaktbereichs (11) eine rund abgeschrägte Struktur (13) ist.
  9. Der Rasierkopf nach Anspruch 8, wobei das gerade Liniensegment (11a) tangential zu einem Außenumriss eines Querschnitts der rund abgeschrägten Struktur (13) verläuft.
EP20928239.1A 2020-04-03 2020-04-03 Rasiererkopf Active EP4067023B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/083250 WO2021196170A1 (zh) 2020-04-03 2020-04-03 剃须刀头

Publications (4)

Publication Number Publication Date
EP4067023A1 EP4067023A1 (de) 2022-10-05
EP4067023A4 EP4067023A4 (de) 2023-08-02
EP4067023B1 true EP4067023B1 (de) 2025-09-10
EP4067023C0 EP4067023C0 (de) 2025-09-10

Family

ID=77927346

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20928239.1A Active EP4067023B1 (de) 2020-04-03 2020-04-03 Rasiererkopf

Country Status (3)

Country Link
EP (1) EP4067023B1 (de)
CN (1) CN114340857B (de)
WO (1) WO2021196170A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023123101A1 (zh) * 2021-12-29 2023-07-06 温州美葆科技技术有限公司 剃须刀头及其刀头框架
WO2023137735A1 (zh) * 2022-01-24 2023-07-27 温州美葆科技技术有限公司 剃须系统

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9505917D0 (en) * 1995-03-23 1995-05-10 Gillette Co Safety razors
US5689883A (en) * 1995-05-08 1997-11-25 Warner-Lambert Company Shaving implement
GB2354474B8 (en) * 1999-09-27 2008-01-29 Gillette Co Safety razors
US20040055156A1 (en) * 2002-09-25 2004-03-25 The Gillette Company Safety razor
BR112015031687B1 (pt) * 2013-06-19 2021-03-30 Bic-Violex Sa Conjunto de lâminas de barbear/depilar e barbeador/depilador
EP2823942A1 (de) * 2013-07-10 2015-01-14 The Gillette Company Rasierklingenkartuschen
US10384360B2 (en) * 2016-06-29 2019-08-20 The Gillette Company Llc Razor blade with a printed object
CN110785271A (zh) * 2017-07-14 2020-02-11 比克维奥莱克斯公司 用于测量皮肤特性和增强剃刮体验的设备和方法
EP3453499A1 (de) * 2017-09-11 2019-03-13 The Gillette Company LLC Haarentfernungsvorrichtung für schamhaar
KR102063770B1 (ko) * 2018-07-27 2020-01-08 주식회사 도루코 면도기 카트리지
CN209999245U (zh) * 2018-11-29 2020-01-31 中山佐客护理用品有限公司 剃须刀头以及剃须刀

Also Published As

Publication number Publication date
WO2021196170A1 (zh) 2021-10-07
EP4067023C0 (de) 2025-09-10
CN114340857A (zh) 2022-04-12
EP4067023A1 (de) 2022-10-05
CN114340857B (zh) 2023-05-09
EP4067023A4 (de) 2023-08-02

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