EP2368457A2 - Bürstenkörper und Zahnbürste - Google Patents

Bürstenkörper und Zahnbürste Download PDF

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Publication number
EP2368457A2
EP2368457A2 EP11159518A EP11159518A EP2368457A2 EP 2368457 A2 EP2368457 A2 EP 2368457A2 EP 11159518 A EP11159518 A EP 11159518A EP 11159518 A EP11159518 A EP 11159518A EP 2368457 A2 EP2368457 A2 EP 2368457A2
Authority
EP
European Patent Office
Prior art keywords
bristles
conductive
height
insulative
reference plane
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.)
Withdrawn
Application number
EP11159518A
Other languages
English (en)
French (fr)
Inventor
Satoshi Uchida
Masayoshi Nagayama
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 Corp
Original Assignee
Panasonic Electric Works 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 Electric Works Co Ltd filed Critical Panasonic Electric Works Co Ltd
Publication of EP2368457A2 publication Critical patent/EP2368457A2/de
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/06—Arrangement of mixed bristles or tufts of bristles, e.g. wire, fibre, rubber
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B15/00—Other brushes; Brushes with additional arrangements
    • A46B15/0002—Arrangements for enhancing monitoring or controlling the brushing process
    • A46B15/0016—Arrangements for enhancing monitoring or controlling the brushing process with enhancing means
    • A46B15/0022—Arrangements for enhancing monitoring or controlling the brushing process with enhancing means with an electrical means
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/028—Bristle profile, the end of the bristle defining a surface other than a single plane or deviating from a simple geometric form, e.g. cylinder, sphere or cone
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/02—Bristles details
    • A46D1/0207—Bristles characterised by the choice of material, e.g. metal
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1066—Toothbrush for cleaning the teeth or dentures

Definitions

  • the present invention relates to a brush body, which includes conductive bristles and insulative bristles arranged on an anchoring surface, and a toothbrush including such a brush body.
  • Japanese Laid-Open Patent Publication No. 2006-223369 describes one example of a toothbrush.
  • bundles of conductive bristles are arranged at a middle part of a brush body.
  • the conductive bristles have the same height at the middle part of the brush body.
  • the toothpaste on the conductive bristles and insulative bristles is rubbed against the gum at the same time. It is thus difficult to effectively move the electrolytic medicinal components from the energized conductive bristles.
  • the insulative bristles arranged near the conductive bristles first contact the gum. It is thus difficult to obtain the massaging effect when current flows from the conductive bristles to the gum or the like.
  • a first aspect of the present invention is a brush body including an anchoring surface.
  • the brush body includes a mixed bristle bundle arranged on the anchoring surface.
  • the mixed bristle bundle includes a plurality of conductive bristles and a plurality of insulative bristles.
  • a reference plane is set on the anchoring surface.
  • the conductive bristles have a height from the reference plane.
  • the insulative bristles have a height from the reference plane that differs from the height of the conductive bristles.
  • a second aspect of the present invention is a brush body including an anchoring surface.
  • the brush body includes a conductive bristle bundle arranged on the anchoring surface and including a plurality of conductive bristles.
  • An insulative bristle bundle is arranged on the anchoring surface and includes a plurality of insulative bristles.
  • a reference plane is set on the anchoring surface.
  • the conductive bristle bundle has a height from the reference plane.
  • the insulative bristle bundle has a height from the reference plane that differs from the height of the conductive bristle bundle.
  • a third aspect of the present invention is a brush body including an anchoring surface.
  • the brush body includes a plurality of mixed bristle bundles arranged on the anchoring surface and includes a first mixed bristle bundle and a second mixed bristle bundle.
  • the mixed bristle bundles each include plurality of conductive bristles and a plurality of insulative bristles.
  • a reference plane is set on the anchoring surface.
  • the conductive bristles have a height from the reference plane
  • the insulative bristles have a height from the reference plane that differs from the height of the conductive bristles.
  • the first mixed bristle bundle has a height from the reference plane
  • the second mixed bristle bundle has a height from the reference plane that differs from the height of the first mixed bristle bundle.
  • the electric toothbrush 1 includes a brush body 10 and a grip 20.
  • the grip 20 is grasped by a user.
  • the brush body 10 is attached in a removable manner to a distal portion of the grip 20.
  • An oscillation actuator 22 is retained in the grip 20 to oscillate the brush body 10 when brushing teeth with the electric toothbrush.
  • the grip 20 is cylindrical to facilitate grasping by the user.
  • the grip 20 includes a grip electrode 21, switches 26, and LEDs 27.
  • the grip electrode 21 is arranged on an outer surface of the grip 20 and contacts the user's hand when the user grasps the grip 20.
  • the switches 26 are operated by the user.
  • the LEDs 27 show operational states.
  • the grip 20 contains a battery 24 and a circuitry 25 in addition to the oscillation actuator 22.
  • the battery 24 supplies the circuitry 25 with power.
  • the circuitry 25 controls the supply of power to the oscillation actuator 22.
  • the oscillation actuator 22 includes an output shaft 23, which projects out of the distal portion of the grip 20.
  • the output shaft 23 is inserted into the brush body 10.
  • the brush body 10 includes a brush stem 12, a head 11, and mixed bristle bundles 70.
  • the brush stem 12 is connected to the grip 20.
  • the head 11 is formed integrally with the brush stem 12.
  • the mixed bristle bundle 70 is anchored to the head 11.
  • a conductor 14 is arranged in the head 11.
  • the mixed bristle bundles 70 each include a basal portion anchored to the conductor 14.
  • a connection terminal 15 and an insertion hole 16 6 are arranged in the brush stem 12.
  • the connection terminal 15 electrically connects the conductor 14 to the output shaft 23 of the grip 20.
  • the output shaft 23 is inserted into the insertion hole 16.
  • the output shaft 23 of the grip 20 is fitted into the insertion hole 16 of the brush body 10 to attach the brush body 10 to the grip 20. This electrically connects the conductor 14 to the battery 24 via the connection terminal 15 and the output shaft 23.
  • Fig. 2 shows the circuit configuration of the electric toothbrush 1.
  • the circuitry 25 of the electric toothbrush 1 includes a control circuit 25a, a charge circuit 25b, and a power supply circuit 25c.
  • the control circuit 25a is electrically connected to the grip electrode 21.
  • the charge circuit 25b is electrically connected to the control circuit 25a.
  • the power supply circuit 25c receives power from the battery 24.
  • the charge circuit 25b supplies the battery 24 with power.
  • an electric circuit is formed including the grip electrode 21 of the grip 20 held by the user's hand, the control circuit 25a of the circuitry 25, the output shaft 23 of the grip 20, the connection terminal 15 of the brush body 10, the conductor 14, the mixed bristle bundles 70, oral saliva, gum tissues and the like, and the human body.
  • the control circuit 25a applies DC voltage of a predetermined level, current flows to the above electric circuit.
  • Figs. 3(a) to 3(c) are enlarged views showing the structure of the mixed bristle bundles 70.
  • each mixed bristle bundle 70 is anchored to the conductor 14 through an anchoring surface 13, which is the surface of the head 11.
  • the anchoring surface 13 is a planar surface extending along a longitudinal direction of the electric toothbrush 1.
  • each mixed bristle bundle 70 includes conductive bristles 30 and insulative bristles 40.
  • the insulative bristles 40 are formed from a flexible insulative resin, such as polyamide resin or polybutylene terephthalate.
  • each conductive bristle 30 includes a core 31.
  • the core 31 is formed from a flexible conductive resin such as a carbon-containing polyamide resin or carbon-containing polybutylene terephthalate.
  • the core 31 is coated by a coating 33.
  • the coating 33 is formed from a flexible insulated resin, such as carbon-free polyamide resin or polybutylene terephthalate.
  • the core 31 includes a distal portion 32, which projects out of a distal portion of the coating 33, and a basal portion, which projects out of a basal portion of the coating 33.
  • the distal portion 32 and basal portion of the core 31 are free from the coating 33.
  • the conductive bristles 30 have a height from the anchoring surface 13, or reference plane, of the head 11 that differs from that of the insulative bristles 40. More specifically, the height from the anchoring surface 13 to the distal portion of each insulative bristle 40 is greater than the height from the anchoring surface 13 to the distal portion of each conductive bristle 30. The difference in height results in a pit 34 being defined at the tip of each conductive bristle 30.
  • a direction in which the conductive bristles 30 and insulative bristles 40 extend is referred to as a height-wise direction.
  • the anchoring surface is not flat, hypothetical planes extending in the longitudinal direction of the electric toothbrush 1 are set along, or defined by, the anchoring surface. The surface of the head 11 opposite to the anchoring surface 13 is then set as a base plane. The hypothetical plane located at the highest position from the anchoring surface 13 is selected as the reference plane.
  • the anchoring surface 13 is a planar surface extending along the longitudinal direction of the electric toothbrush 1.
  • the highest position of anchoring surface 13 is the same throughout the entire anchoring surface 13. Accordingly, the anchoring surface 13 conforms to the reference plane.
  • the toothpaste 80 When the toothpaste 80 includes conductive medicinal components, the current draws ions toward oral tissues. When the ions produce a sterilization effect, the ions sterilize the mouth. Cetylpyridinium chloride is one example of an electrolytic medicinal component.
  • the electric toothbrush 1 of the second embodiment differs from that of the first embodiment in the structure of the head 11. Otherwise, the electric toothbrush 1 of the second embodiment has the same structure as the first embodiment. The differences will now be discussed. Like or same reference numerals are given to those components that are the same as the corresponding components of the first embodiment. Such components will not be discussed.
  • the head 11 includes conductive bristle bundles 50 and insulative bristle bundles 60 to remove dental plaque.
  • the conductive bristle bundles 50 and insulative bristle bundles 60 each includes a basal portion, which is anchored to the conductor 14 through the anchoring surface 13, which is a surface of the head 11.
  • the conductive bristle bundles 50 and the insulative bristle bundles 60 are alternately arranged in the longitudinal direction of the head 11.
  • Insulative bristle bundles 60 are arranged at distal and basal ends of the head 11 in the longitudinal direction so that the conductive bristle bundles 50 are arranged inward from the insulative bristle bundles 60.
  • the anchoring surface 13 is a planar surface extending in the longitudinal direction of the electric toothbrush 1.
  • each conductive bristle bundle 50 includes conductive bristles 30.
  • Each conductive bristle 30 is electrically connected to the conductor 14.
  • each insulative bristle bundle 60 includes insulative bristles 40.
  • the height of the conductive bristle bundles 50 from the anchoring surface 13, or reference plane, of the head 11 differs from that of the insulative bristle bundles 60. More specifically, the height h from the anchoring surface 13 to a distal portion of each insulative bristle bundle 60 is greater than the height from the anchoring surface 13 to a distal portion of each conductive bristle bundle 50. The difference in height results in a pit 34 being defined at the tip of each conductive bristle bundle 50.
  • the toothpaste 80 includes electrolytic medicinal components, current acts to draw the medicinal components toward oral tissues.
  • the medicinal components produce a sterilization effect, the mouth is sterilized.
  • the toothbrush of the second embodiment has the advantages described below.
  • the electric toothbrush 1 of the third embodiment differs from that of the second embodiment in the structure of the head 11. Otherwise, the electric toothbrush 1 of the third embodiment has the same structure as the second embodiment.
  • the differences will now be discussed.
  • Like or same reference numerals are given to those components that are the same as the corresponding components of the first embodiment. Such components will not be discussed.
  • the height h from the anchoring surface 13 to the distal portion of each insulative bristle bundle 60 is greater than that from the anchoring surface 13 to the distal portion of each conductive bristle bundle 50.
  • the difference in height forms a pit 34 at the tips of the conductive bristle bundle 50.
  • the insulative bristle bundles 60 are arranged at the longitudinal distal and basal ends of the head 11.
  • the conductive bristle bundles 50 are arranged between the insulative bristle bundles 60.
  • the conductive bristle bundles 50 are continuously anchored between the insulative bristle bundles 60 at the two ends.
  • the pit 34 is formed to extend continuously at the tips of the conductive bristle bundles 50. In other words, a group of pits form the single large pit 34.
  • the toothpaste 80 includes electrolytic medicinal components, current acts to draw the medicinal components toward oral tissues.
  • the medicinal components produce a sterilization effect, the mouth is sterilized.
  • the toothbrush of the second embodiment has the advantages described below.
  • each mixed bristle bundle 70 has the same height.
  • the mixed bristle bundles 70 may have different heights. More specifically, the height of the conductive bristles 30 from the reference plane and the height of the insulative bristles 40 from the reference plane may be different in each mixed bristle bundle 70.
  • the height of one mixed bristle bundle 70 from the reference plane and the height of another mixed bristle bundle 70 from the reference plane may be different.
  • the mixed bristle bundles arranged at the basal portion, distal portion, and middle portion of the head 11 in the longitudinal direction may be taller than the other mixed bristle bundles.
  • the mixed bristle bundles arranged at the basal portion and distal portion of the head 11 may be taller than the mixed bristle bundles arranged therebetween.
  • the height of the conductive bristles 30 may be the same as the height of the insulative bristles 40 in each mixed bristle bundle 70.
  • the anchoring surface 13 is a planar surface extending in the longitudinal direction of the brush body 10 but may be modified as described below. Referring to Fig. 10 , the anchoring surface 13 may be curved so that the mixed bristle bundles 70 at the middle part, or peak, of the head 11 in the longitudinal direction are the tallest, and the mixed bristle bundles 70 become shorter from the middle portion toward the two ends of the brush body 10. In this case, when the basal portions of the mixed bristle bundles 70, which have the same height, are embedded with the same depth in the head 11, the height from the reference plane to the tip differs between the mixed bristle bundles 70 that are arranged adjacent to each other.
  • the height of the conductive bristles 30 from the reference plane is less than the height of the insulative bristles 40 from the reference plane.
  • the height of the conductive bristles 30 from the reference plane may be greater than the height of the insulative bristles 40 from the reference plane.
  • pits are formed at the tips of the insulative bristles 40. Accordingly, toothpaste applied to the tips of the conductive bristles 30 is consumed before the toothpaste held in the pits of the insulative bristles 40.
  • the tips of the conductive bristles 30 directly contact the gum and prevent toothpaste from interfering with the contact between the conductive bristles 30 and gum.
  • the height of the conductive bristles 30 from the reference plane is less than the height of the insulative bristles 40 in each mixed bristle bundle 70.
  • the conductive bristles 30 from the reference plane may be taller than the insulative bristles 40 in each mixed bristle bundle 70. This forms pits at the tips of the insulative bristles 40.
  • the toothpaste 80 applied to the tips of the conductive bristles 30 is consumed before that held in the pits of the insulative bristles 40. This obtains the advantages described above.
  • each conductive bristle 30 extends from the coating 33. This allows for the core 31 to enter gaps such as periodontal pockets and sterilize bacteria in a concentrated manner with chlorine. Further, the projection of the core 31 increases the energized area. This increases the electric massaging effect. Moreover, portions other than the distal portion 32 of the core 31 are covered by the coating 33, which is in insulator to supply current to the distal portion of the core 31 in a concentrated manner. This further improves the electric massaging effect.
  • the height of the conductive bristle bundles 50 from the reference plane is less than the height of the insulative bristle bundles 60 from the reference plane.
  • the height of the conductive bristle bundles 50 from the reference plane may be greater than the height of the insulative bristle bundles 60 from the reference plane. This case also obtains the same advantages as the modifications described above. Further, when the user applies the toothpaste 80 to the head 11 before brushing his or her teeth, the toothpaste 80 is easily received in the pits.
  • the tall insulative bristle bundles 60 are arranged at the basal, distal, and middle portions of the head 11 in the longitudinal direction.
  • tall conductive bristle bundles 50 may be arranged at the middle portion, and tall insulative bristle bundles 60 may be arranged at the basal and distal portions.
  • tall conductive bristle bundles 50 may be arranged at the basal and distal portions, and tall insulative bristle bundles 60 may be arranged at the middle portion.
  • the conductive bristles 30 have the same height, and the insulative bristles 40 have the same height. In other words, the bristles have only two levels of height. However, the bristles may have three or more levels of height.
  • the conductive bristle bundles 50 anchored at the middle portion may be shorter than the other conductive bristle bundles 50. This limits the medicinal components from escaping from the conductive bristle bundles 50.
  • the brush body 10 includes the head 11 and the brush stem 12.
  • the brush stem 12 may be excluded from the brush body 10.
  • the portion corresponding to the excluded brush stem 12 may be formed integrally with the grip 20.
  • the head 11 and the grip 20 may be separate elements.
  • the electric toothbrush is applied to an oscillation type electric tooth but may also be applied to a rotary type toothbrush that rotates part of a head to which bristles are anchored.
  • the present invention may also be applied to a toothbrush that does not have a function for oscillating the head or a function for rotating the head.

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  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Brushes (AREA)
EP11159518A 2010-03-25 2011-03-24 Bürstenkörper und Zahnbürste Withdrawn EP2368457A2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010071142A JP5292346B2 (ja) 2010-03-25 2010-03-25 ブラシ体および歯ブラシ

Publications (1)

Publication Number Publication Date
EP2368457A2 true EP2368457A2 (de) 2011-09-28

Family

ID=44246423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11159518A Withdrawn EP2368457A2 (de) 2010-03-25 2011-03-24 Bürstenkörper und Zahnbürste

Country Status (4)

Country Link
US (1) US20110232014A1 (de)
EP (1) EP2368457A2 (de)
JP (1) JP5292346B2 (de)
CN (1) CN102197919A (de)

Families Citing this family (13)

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Publication number Priority date Publication date Assignee Title
ES2593132T3 (es) 2011-07-06 2016-12-05 Braun Gmbh Sección de limpieza para un dispositivo de higiene bucodental eléctrico
US9009901B2 (en) * 2011-09-20 2015-04-21 Braun Gmbh Oral care devices having automatic mode selection
JP2013118895A (ja) * 2011-12-06 2013-06-17 Lion Corp 口腔内用イオンブラシ
US10477958B2 (en) 2013-12-12 2019-11-19 Colgate-Palmolive Company Multi-component bristle having components with different oral care additives, and oral care implement comprising the same
US9681743B2 (en) 2013-12-12 2017-06-20 Colgate-Palmolive Company Spiral bristle having strand components with different oral care additives, and oral care implement comprising the same
KR20160098211A (ko) 2013-12-12 2016-08-18 콜게이트-파아므올리브캄파니 서로 다른 구강 관리 첨가제들을 갖는 구성요소들을 갖는 다중-구성요소 모, 및 이를 포함하는 구강 관리 장치
US10702057B2 (en) 2015-07-07 2020-07-07 Colgate-Palmolive Company Oral care implement and monofilament bristle for use with the same
CN106901859A (zh) * 2017-03-07 2017-06-30 成都米士科技有限公司 电离子口腔清洁装置
CN108742916A (zh) * 2018-06-25 2018-11-06 深圳市港桐鑫光电科技有限公司 一种基于led光护理的电动牙刷
CN110292454A (zh) * 2019-08-06 2019-10-01 深圳市欣点通科技有限公司 一种多功能电动牙刷
CN112370199B (zh) * 2020-11-11 2022-03-18 慈溪赛嘉电子有限公司 电力牙刷装置
CN112336489A (zh) * 2020-11-11 2021-02-09 慈溪赛嘉电子有限公司 电力牙刷装置
EP4018881A1 (de) * 2020-12-22 2022-06-29 Koninklijke Philips N.V. Reinigungs- und / oder behandlungseinheit für eine mundpflegevorrichtung

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JP2006223369A (ja) 2005-02-15 2006-08-31 Matsushita Electric Works Ltd 電子歯ブラシ

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US4361922A (en) * 1981-01-06 1982-12-07 Schlegel Corporation Cleaning brush for electrostatic copiers, printers and the like
JPH01181804A (ja) * 1988-01-14 1989-07-19 Kaken Pharmaceut Co Ltd 歯刷子
JPH06209824A (ja) * 1992-04-22 1994-08-02 Achilles Corp 導電性繊維製品及びその製造方法
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JP3909446B2 (ja) * 1996-10-25 2007-04-25 生田 稔郎 磁気イオン歯ブラシ
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US5815872A (en) * 1997-08-08 1998-10-06 Optiva Corporation Pressure overload indicator system for power toothbrushes
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US6029304A (en) * 1998-06-09 2000-02-29 Colgate-Palmolive Company Light interactive toothbrush
JP2003066669A (ja) * 2001-08-27 2003-03-05 Tsuchiya Tsco Co Ltd 導電性ブラシ
JP4627036B2 (ja) * 2005-12-28 2011-02-09 花王株式会社 温熱ブラシ

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Publication number Priority date Publication date Assignee Title
JP2006223369A (ja) 2005-02-15 2006-08-31 Matsushita Electric Works Ltd 電子歯ブラシ

Also Published As

Publication number Publication date
US20110232014A1 (en) 2011-09-29
CN102197919A (zh) 2011-09-28
JP5292346B2 (ja) 2013-09-18
JP2011200466A (ja) 2011-10-13

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