EP2926958A1 - Tondeuses à cheveux - Google Patents

Tondeuses à cheveux Download PDF

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Publication number
EP2926958A1
EP2926958A1 EP15153725.5A EP15153725A EP2926958A1 EP 2926958 A1 EP2926958 A1 EP 2926958A1 EP 15153725 A EP15153725 A EP 15153725A EP 2926958 A1 EP2926958 A1 EP 2926958A1
Authority
EP
European Patent Office
Prior art keywords
boss
spring
guide groove
relative
main body
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.)
Granted
Application number
EP15153725.5A
Other languages
German (de)
English (en)
Other versions
EP2926958B1 (fr
Inventor
Satoshi Sobagaki
Hitoshi Ogawa
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.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management 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 Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Publication of EP2926958A1 publication Critical patent/EP2926958A1/fr
Application granted granted Critical
Publication of EP2926958B1 publication Critical patent/EP2926958B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B26B19/20—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers with provision for shearing hair of preselected or variable length
    • B26B19/205—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers with provision for shearing hair of preselected or variable length by adjustment of the cutting members

Definitions

  • the disclosure relates to hair clippers for haircut that can adjust the clipping height.
  • the clipping height of hair clippers is changed by rotating a dial attached to its main body.
  • PTL 1 Japanese Patent Publication No. 4046098 discloses this type of hair clippers.
  • the clipping height is a distance between a hair root and a point of hair cut by hair clippers. The length of hair after cutting depends on this clipping height.
  • the hair clippers can cut hair by sliding a movable blade attached to its main body in a direction perpendicular to a longer direction of the main body (hereafter referred to as a shorter direction) relative to a stationary blade attached to the main body.
  • the clipping height can be changed by sliding the movable blade relative to the stationary blade in the longer direction of the main body.
  • a spiral guide groove is formed in a dial.
  • the dial and the movable blade are connected by a slide mechanism for sliding the movable blade in the longer direction of the main body.
  • the slide mechanism includes a link with boss to be fitted into the guide groove.
  • a first spring is attached between the link and the movable blade. This first spring pushes the movable blade against the stationary blade and also applies force to the movable blade so as to move the movable blade toward the main body.
  • a second spring is attached to the link. This second spring applies force to the link so as to move the movable blade away from the main body.
  • the guide groove moves relative to the boss.
  • the boss and link slide in the longer direction of the main body along the guide groove.
  • the movable blade slides relative to the stationary blade in the longer direction of the main body by the force applied from the link.
  • An object of the disclosure is to offer hair clippers that the user can operate a control section pleasantly.
  • the hair clippers of the disclosure include a stationary blade, movable blade, main body, control section, and slide mechanism.
  • the movable blade slides relative to the stationary blade.
  • the stationary blade and the movable blade are attached to the main body.
  • the control section is disposed on the main body, and a guide groove is formed on the control section.
  • the slide mechanism includes a slider, first spring, link, and second spring.
  • the movable blade is attached to the slider.
  • the slider slides relative to the stationary blade in the longer direction and shorter direction of the main body.
  • the first spring applies force to the slider such that the movable blade is pushed against the stationary blade and the slider movers toward the main body.
  • the link has a boss to be inserted into the guide groove, and slides relative to the main body in the longer direction of the main body.
  • the second spring applies force to the link such that the link moves toward the slider.
  • the first spring further applies force to the boss to push the boss against a first side face or second side face along the extending direction of the guide groove.
  • the second spring further applies force to the boss to push the boss in a direction opposite to the direction that the first spring pushes the boss.
  • the disclosure enables the user to operate the control section pleasantly.
  • a structure of hair clippers 1 is described with reference to Fig. 1 and Fig. 2 .
  • hair clippers 1 include main body 10, blade block 20, driver 30 ( Fig. 2 ), cover 40, and adjustment mechanism 50.
  • Main body 10 has a substantially cylindrical shape for user to grip, and the shaft direction is formed in the longer direction.
  • Switch 11 is provided on the surface of main body 10. Switch 11 switches connection between a battery of driver 30 disposed inside main body 10 and a motor (not illustrated).
  • main body 10 includes blade block placement part 12 where blade block 20 ( Fig. 1 ) is detachably mounted at its end and dial placement part 13 where dial 60 ( Fig. 1 ) is disposed on its peripheral front face.
  • Holding spring 100 is fitted to fixing part 13B of dial placement part 13.
  • Hole 60B ( Fig. 4 ) of dial 60 is fitted to support shaft 13A of dial placement part 13.
  • cover 40 is fixed to main body 10 to cover a part of the surface of dial 60 in the state dial 60 is rotatably disposed on main body 10. Therefore, cover 40 suppresses detachment of dial 60 from main body 10.
  • a structure of blade block 20 is described with reference to Fig. 3 .
  • Blade block 20 includes a pair of blades configured with stationary blade 21 and movable blade 22, support 23, slider 24, blade lever 26, and first spring 27.
  • Support 23 has a sheet shape, and multiple protrusions 23A to be fitted to multiple concavities 12A ( Fig. 2 ) on blade block placement part 12 ( Fig. 2 ) are formed near the periphery of its sheet shape.
  • Stationary blade 21 is fixed at the end of support 23.
  • Slider 24 is attached to support 23 in a slidable manner in the longer direction and the short direction of main body 10. Movable blade 22 is fixed at a tip of slider 24.
  • Blade lever 26 is attached to support 23 in a rotatable manner relative to support 23.
  • Slider 24 and blade lever 26 are connected by first spring 27, which is a double torsion spring.
  • Coil portion 27A of first spring 27 is attached to housing 26B of blade lever 26, and both ends 27B are attached to slider 24 at the side opposite to the side where slider 24 is in contact with support 23. This makes first spring 27 apply to movable blade 22 force to push movable blade 22 against stationary blade 21 and support 23 and force to move movable blade 22 relative to stationary blade 21 in the longer direction of main body 10 via slider 24.
  • Shaft groove 25 for fitting shaft 31 ( Fig. 2 ) connected to the motor (not illustrated) is formed on slider 24.
  • the force that first spring 27 applies to movable blade 2 to push movable blade 2 against stationary blade 21 and support 23 is smaller than the force that first spring 27 applies to movable blade 22 to move movable blade 22 relative to stationary blade 21 in the longer direction of main body 10. Therefore, when shaft 31 ( Fig. 2 ) is operated, movable blade 22 slides relative to stationary blade 21 in the shorter direction of main body 10 while movable blade 22 remains pushed against stationary blade 21. This relative slide of movable blade 22 and stationary blade 21 cuts hair entering between movable blade 22 and stationary blade 21.
  • the motor such as a linear motor, that operates movable blade 22 in the shorter direction of main body 10 by eccentrically rotating shaft 31 or that reciprocates shaft 31 can be adopted.
  • Adjustment mechanism 50 is described with reference to Figs. 1 to 5 .
  • adjustment mechanism 50 includes dial 60 ( Fig. 4 ), link 70 linked with dial 60, coupling lever 80 linked with link 70, and second spring 90 attached to link 70.
  • Slider 24 ( Fig. 3 ), blade lever 26 ( Fig. 3 ), first spring 27 ( Fig. 3 ), link 70, coupling lever 80, and second spring 90 configure the slide mechanism.
  • dial 60 has a disk shape.
  • a rear face of dial 60 is open, and spiral guide groove 61 and holder 66 protruding from the rear face at the side opposite to guide groove 61 across the center are formed.
  • numerical scale 60A indicating the clipping height is provided on the surface of dial 60. Scale 60A is disposed at a position that only a numerical value corresponding to the current clipping height is exposed from window 41 of cover 40.
  • guide groove 61 has first side face 62 at the inner peripheral side, which is the side opposite to slider 24 along the extending direction of guide groove 61, and second side face 64 at the outer peripheral side, which is the side of slider 24.
  • first support faces 63 are formed to push boss 71 against them. These five first support faces 63 are flat, and perpendicular to a line extending from the center of dial 60 in a radial direction.
  • second side face 64 On second side face 64, five second support faces 65 are formed to push boss 71 against them. These five second support faces 65 are flat and perpendicular to a line extending from the center of dial 60 in a radial direction.
  • boss 71 is set slightly smaller than a width of guide groove 61. Therefore, there is practically no clearance between boss 71 and first side face 62 and between boss 71 and second side face 64.
  • Holder 66 is formed along the circumferential direction, and multiple concavities 66A are formed at the outer peripheral side.
  • Top 101 of angle holding spring 100 to be fixed to fixing part 13B ( Fig. 2 ) is fitted to one of concavities 66A.
  • dial 60 is hard to rotate due to the force of holding spring 100. Accordingly, a rotating position of dial 60 will be fixed.
  • holding spring 100 deforms and top 101 is released from concavity 66A where it has been fitted.
  • Fixing position P changes between first limit fixing position PT1 that is a limit rotating position in clockwise rotation of dial 60 and second limit fixing position PT2 that is a limit rotating position in counterclockwise rotation.
  • the clockwise rotation of dial 60 is a direction to increase the clipping height of hair clippers 1.
  • the counterclockwise rotation decreases the clipping height of hair clippers 1.
  • First intermediate fixing position PM1 is adjacent to first limit fixing position PT1.
  • Second intermediate fixing position PM2 is adjacent to second limit fixing position PT2.
  • Third intermediate fixing position PM3 is between first intermediate fixing position PM1 and second intermediate fixing position PM2.
  • Each fixing position P corresponds to the rotating position of dial 60 where top 101 is fitted to one concavity 66A in multiple concavities 66A.
  • link 70 is attached to shaft 82 of coupling lever 80 rotatably supported by main body 10.
  • Second spring 90 that applies force to link 70 toward main body 10 is attached to the other end of link 70.
  • Shaft 82 of coupling lever 80 extends in the shorter direction of main body 10. Arms 81 are formed on both ends of shaft 82. Arms 81 are in contact with arms 26A of blade lever 26. Coupling lever 80 rotates relative to main body 10 when link 70 slides relative to main body 10 in the longer direction of main body 10. More specifically, coupling lever 80 rotates relative to main body 10 corresponding to the relation of force applied from slider 24 via blade lever 26 and force applied from link 70.
  • First limit fixing position PT1 is regulated by the limit fixing position of the rotation of coupling lever 80 as a result of coupling lever 80 in contact with main body 10.
  • Second limit fixing position PT2 is regulated by the slide limit fixing position of link 70 as a result of link 70 in contact with main body 10.
  • adjustment mechanism 50 when dial 60 is rotated is described with reference to Fig. 5 to Fig. 10 .
  • link 70 is at a position closest to slider 24 as shown in Fig. 6 .
  • arm 81 of coupling lever 80 is in contact with arm 26A of blade lever 26.
  • movable blade 22 is closest to main body 10.
  • second spring 90 is most contracted. Therefore, force applied from second spring 90 to boss 71 becomes the largest.
  • link 70 moves away from main body 10 resisting the force of second spring 90, as shown in Fig. 5 .
  • arm 81 is pushed away from main body 10 by the force of first spring 27 via arm 26A of blade lever 26. This makes movable blade 22 move toward main body 10, compared to that in Fig. 8 , by being pulled by slider 24.
  • first spring 27 applies to boss 71
  • second spring 90 applies to boss 71
  • boss 71 is pushed against first support face 63 corresponding to first intermediate fixing position PM1.
  • a direction of force exerted by boss 71 upon first support face 63 is perpendicular to first support face 63.
  • boss 71 When fixing position P is at second limit fixing position PT2, the force that second spring 90 applies to boss 71 is greater than the force that first spring 27 applies to boss 71, and thus boss 71 is pushed against second support face 65 corresponding to second limit fixing position PT2.
  • a direction of force exerted by boss 71 upon second support face 65 is perpendicular to second support face 65.
  • boss 71 When fixing position P is at second intermediate fixing position PM2, the force that second spring 90 applies to boss 71 is greater than the force that first spring 27 applies to boss 71, and thus boss 71 is pushed against second support face 65 corresponding to intermediate fixing position PM2.
  • a direction of force exerted by boss 71 upon second support face 65 is perpendicular to second support face 65.
  • FIG. 12 Shows force required for the user to rotate dial 60 (hereafter referred to as "dial operating force") in hair clippers of Comparison 1 without second spring 90.
  • dial operating force As shown by the broken line with circle in Fig. 12 , an approximately constant high dial operating force is required for changing fixing position P from first limit fixing position PT1 to third intermediate fixing position PM3 and second limit fixing position PT2.
  • an approximately constant low dial operating force is required for changing fixing position P from second limit fixing position PT2 to third intermediate fixing position PM3 and first limit fixing position PT1.
  • the dial operating force greatly differs for changing fixing position P from first limit fixing position PT1 to second limit fixing position PT2 and for changing from second limit fixing position PT2 to first limit fixing position PT1. Accordingly, the user tends to feel discomfort that load needed to change fixing position P from second limit fixing position PT2 to first limit fixing position PT1 is greater than load for changing to first limit fixing position PT1.
  • Two-dot chain lines in Fig. 12 show the dial operating force of hair clippers in Comparison 2 in which the force that second spring 90 applies to boss 71 is always lower than the force that first spring 27 applies to boss 71.
  • the dial operating force slightly decreases toward second limit fixing position PT2 when fixing position P is changed from first limit fixing position PT1 to third intermediate fixing position PM3 and second limit fixing position PT2.
  • the dial operating force slightly decreases when fixing position P is changed from second limit fixing position PT2 to third intermediate fixing position PM3 and first limit fixing position PT1.
  • the dial operating force is always lower than that required for changing fixing position P from first limit fixing position PT1 to third intermediate fixing position PM3 and second limit fixing position PT2.
  • the dial operating force greatly differs for changing fixing position P from first limit fixing position PT1 to second limit fixing position PT2 and for changing from second limit fixing position PT2 to first limit fixing position PT1. Accordingly, the user tends to feel discomfort that load needed to change fixing position P toward second limit fixing position PT2 is greater than load for changing to first limit fixing position PT1.
  • Solid lines in Fig. 12 show the dial operating force of hair clippers 1. As shown by the solid line with circle in Fig. 12 , the dial operating force decreases toward second limit fixing position PT2 when fixing position P is changed from first limit fixing position PT1 to third intermediate fixing position PM3 and second limit fixing position PT2. On the other hand, as shown by the solid line with triangle in Fig. 12 , the dial operating force decreases when fixing position P is changed from second limit fixing position PT2 to third intermediate fixing position PM3 and first limit fixing position PT1. At third intermediate fixing position PM3, the solid line with circle and the solid line with triangle in Fig. 2 cross. In other words, the force that first spring 27 applies to boss 71 and the force that second spring 90 applies to boss 71 are balanced at third intermediate fixing position PM3.
  • the dial operating force required for changing fixing position P from first limit fixing position PT1 to second limit fixing position PT2 in hair clippers 1 is smaller than the dial operating force required in Comparison 1 and Comparison 2. This can suppress generation of a large reactive force on dial 60 when changing fixing position P from first limit fixing position PT1 to second limit fixing position PT2 in hair clippers 1.
  • Hair clippers 1 prove effective as follows.
  • Intermediate fixing position PM may be provided at one, two, or four or more points.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
EP15153725.5A 2014-03-31 2015-02-04 Tondeuse à cheveux Active EP2926958B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014074545A JP6241823B2 (ja) 2014-03-31 2014-03-31 バリカン

Publications (2)

Publication Number Publication Date
EP2926958A1 true EP2926958A1 (fr) 2015-10-07
EP2926958B1 EP2926958B1 (fr) 2018-11-28

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ID=52440611

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15153725.5A Active EP2926958B1 (fr) 2014-03-31 2015-02-04 Tondeuse à cheveux

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EP (1) EP2926958B1 (fr)
JP (1) JP6241823B2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017153482A1 (fr) * 2016-03-08 2017-09-14 Koninklijke Philips N.V. Procédé de fabrication d'ensemble de lames, ensemble de lames et appareil de coupe des poils/cheveux
EP4023401A4 (fr) * 2020-10-31 2022-12-28 Beijing Xiaomi Mobile Software Co., Ltd. Structure de réglage de dispositif de coupe mobile de tondeuse à cheveux
EP4197723A1 (fr) * 2021-12-06 2023-06-21 Panasonic Intellectual Property Management Co., Ltd. Lame de tondeuse à cheveux et tondeuse à cheveux

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111819046B (zh) 2018-03-30 2022-09-13 吉列有限责任公司 具有可移动构件的剃刀柄部
WO2019191162A1 (fr) 2018-03-30 2019-10-03 The Gillette Company Llc Manche de rasoir ayant une partie pivotante
US11577417B2 (en) 2018-03-30 2023-02-14 The Gillette Company Llc Razor handle with a pivoting portion
USD874061S1 (en) 2018-03-30 2020-01-28 The Gillette Company Llc Shaving razor cartridge
EP3774215B1 (fr) 2018-03-30 2024-03-13 The Gillette Company LLC Manche de rasoir comprenant une partie rotative
EP3774237A1 (fr) 2018-03-30 2021-02-17 The Gillette Company LLC Manche de rasoir avec éléments mobiles
EP3546156B1 (fr) 2018-03-30 2021-03-10 The Gillette Company LLC Manche de rasoir comportant une partie pivotante
US11607820B2 (en) 2018-03-30 2023-03-21 The Gillette Company Llc Razor handle with movable members
CN111819048A (zh) 2018-03-30 2020-10-23 吉列有限责任公司 具有枢转部分的剃刀柄部
CN111801206B (zh) 2018-03-30 2022-07-01 吉列有限责任公司 具有枢转部分的剃刀柄部

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5367772A (en) * 1992-05-26 1994-11-29 Matsushita Electric Works, Ltd. Hair clipper
JP2005304627A (ja) * 2004-04-19 2005-11-04 Matsushita Electric Works Ltd ヘアカッター
EP1757413A1 (fr) * 2005-08-26 2007-02-28 Matsushita Electric Works, Ltd. Tondeuse
US20070107234A1 (en) * 2005-11-14 2007-05-17 Woody Yao Adjustable apparatus for hair clipper

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5922572Y2 (ja) * 1979-07-23 1984-07-05 株式会社 鷺宮製作所 カム板操作荷重の均衡装置
JP3116209U (ja) * 2005-08-29 2005-12-02 姚自強 電動バリカンの刃部調整機
JP5799223B2 (ja) * 2011-04-26 2015-10-21 パナソニックＩｐマネジメント株式会社 バリカン
JP2012228368A (ja) * 2011-04-26 2012-11-22 Panasonic Corp バリカン

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5367772A (en) * 1992-05-26 1994-11-29 Matsushita Electric Works, Ltd. Hair clipper
JP2005304627A (ja) * 2004-04-19 2005-11-04 Matsushita Electric Works Ltd ヘアカッター
JP4046098B2 (ja) 2004-04-19 2008-02-13 松下電工株式会社 ヘアカッター
EP1757413A1 (fr) * 2005-08-26 2007-02-28 Matsushita Electric Works, Ltd. Tondeuse
US20070107234A1 (en) * 2005-11-14 2007-05-17 Woody Yao Adjustable apparatus for hair clipper

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017153482A1 (fr) * 2016-03-08 2017-09-14 Koninklijke Philips N.V. Procédé de fabrication d'ensemble de lames, ensemble de lames et appareil de coupe des poils/cheveux
JP2019511280A (ja) * 2016-03-08 2019-04-25 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． ブレードセット製造方法、ブレードセット及び毛切断器具
US10919165B2 (en) 2016-03-08 2021-02-16 Koninklijke Philips N.V. Blade set manufacturing method, blade set and hair cutting appliance
EP4023401A4 (fr) * 2020-10-31 2022-12-28 Beijing Xiaomi Mobile Software Co., Ltd. Structure de réglage de dispositif de coupe mobile de tondeuse à cheveux
EP4197723A1 (fr) * 2021-12-06 2023-06-21 Panasonic Intellectual Property Management Co., Ltd. Lame de tondeuse à cheveux et tondeuse à cheveux

Also Published As

Publication number Publication date
JP6241823B2 (ja) 2017-12-06
EP2926958B1 (fr) 2018-11-28
JP2015195869A (ja) 2015-11-09

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