EP3501332A1 - Zahnbürste - Google Patents

Zahnbürste Download PDF

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Publication number
EP3501332A1
EP3501332A1 EP17209802.2A EP17209802A EP3501332A1 EP 3501332 A1 EP3501332 A1 EP 3501332A1 EP 17209802 A EP17209802 A EP 17209802A EP 3501332 A1 EP3501332 A1 EP 3501332A1
Authority
EP
European Patent Office
Prior art keywords
bristle tuft
toothbrush
main body
assembly
hole
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Withdrawn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
EP17209802.2A
Other languages
English (en)
French (fr)
Inventor
Hai Wang
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.)
Innotech Appliance Ltd
Original Assignee
Innotech Appliance 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 Innotech Appliance Ltd filed Critical Innotech Appliance Ltd
Priority to EP17209802.2A priority Critical patent/EP3501332A1/de
Publication of EP3501332A1 publication Critical patent/EP3501332A1/de
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
    • A46B3/16—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by wires or other anchoring means, specially for U-shaped bristle tufts
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B7/00—Bristle carriers arranged in the brush body
    • A46B7/04—Bristle carriers arranged in the brush body interchangeably removable bristle carriers
    • A46B7/044—Sliding connections for bristle carriers
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B7/00—Bristle carriers arranged in the brush body
    • A46B7/06—Bristle carriers arranged in the brush body movably during use, i.e. the normal brushing action causing movement
    • 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
    • A46B9/04—Arranged like in or for toothbrushes

Definitions

  • the present application relates to the field of daily necessities, and more particularly, relates to a toothbrush; each bristle tuft of which can be independently moved up and down and closely fitted to the teeth.
  • the bristle tufts in the conventional toothbrushes that can be closely fitted to the teeth are implanted in the hair-setting sheet to be fixed, and hence the bristle tufts cannot move flexibly, which has become a big disadvantage of toothbrushes that can be closely fitted to the teeth, fixed bristle tufts make the toothbrush unable to clean effectively in accordance with the complex inner and outer shape and surface of teeth, giving rise to the bad result of teeth cleaning, and such method of fixing bristle tufts makes bristle tufts not durable for use and easy to fall off, thus the life span of toothbrush is short, and the toothbrush often needs to be replaced, significantly affecting user experience.
  • the present application aims to solve the technical problem that the bristle tufts in the conventional toothbrush are fixed and cannot move freely, which makes it unable to clean effectively in accordance with the complex inner and outer surface and structure of teeth, giving rise to bad cleaning effect, and provide a toothbrush closely fitted to the teeth in which every bristle tuft is able to move independently in different directions in accordance with the specific shape and structure of teeth surface, ensuring effective cleaning result and long use life.
  • the technical solution adopted by the application for solving the technical problem is as follows: providing a toothbrush closely fitted to the teeth, comprising:
  • the toothbrush main body comprises a first main body and a toothbrush back cover connected with the first main body;
  • the bristle tuft hole is a through hole arranged on the first main body;
  • a bottom of the bristle tuft assembly is connected with the toothbrush back cover through the spring assembly.
  • the number of the bristle tuft hole is more than one;
  • the spring assembly comprises a plurality of elastic bodies connected with each other, an arrangement of the elastic bodies corresponds to arrangement of the bristle tuft holes on the toothbrush main body.
  • the bristle tuft assembly comprises a bristle tuft base with a fixing hole, a compression plate and a bristle tuft base support plate fixed in the fixing hole, and a bristle tuft that is compressed on the bristle tuft base support plate by the compression plate.
  • the fixing hole is a tapered hole whose diameter decreases from the top to the bottom, and the compression plate and the bristle tuft base support plate are fixed in the fixing hole by interference fit.
  • an opening top of the fixing hole is inwardly closed to form a certain taper.
  • the elastic body is a hollow frustoconical rubber elastic body.
  • the spring assembly comprises one or more of a spring, a rubber, a silicone rubber, an EVA elastic body and a sponge.
  • a diameter of the bristle tuft base is small than a diameter of the bristle tuft hole
  • an opening top of the bristle tuft hole is provided with an inwardly convex flange
  • an opening diameter of the convex flange is small than a diameter of the bristle tuft base.
  • edges of the first main body and the toothbrush back cover are configured with fixing groove and protrusion that match with other each in size, and the first main body and the toothbrush back cover are fixedly connected as a uniform body through the fixing groove and protrusion fitting into each other, the spring assembly is fixed within a chamber formed between the first main body and the toothbrush back cover.
  • the beneficial effects of the present application are that a spring assembly is skillfully configured within the toothbrush closely fitted to the teeth, and the flexible configuration and spring loaded driving force for the bristle tuft assembly are realized by letting the elastic body and bristle tuft assembly contact each other, so that every bristle tuft is able to independently move upward and downward in accordance with the shape and structure of teeth surface, which gives rise to good cleaning result and is durable for use, and moreover, the structure is simply and the manufacturing cost is low.
  • the bristle tuft assembly 2 comprises a bristle tuft 21, a bristle tuft base 22, a compression plate 23 and a bristle tuft base support plate 24.
  • a fixing hole 221 for fixing the bristle tuft 21 is arranged on one end of the bristle tuft base 22; the shape and size of the compression plate 23 and the bristle tuft base support plate 24 are the same as those of the fixing hole 221, so that the compression plate 23 and the bristle tuft base support plate 24 can be placed in the fixing hole 221.
  • the bristle tuft base support plate 24 is fixed at the bottom of the fixing hole 221, and then the middle of the bristle tuft 21 is placed at the opening of the fixing hole 221 to fix the compression plate 23 from the middle of the bristle tuft 21.
  • the fixing hole 221 is pressed in until the middle portion of the bristle tuft 21 is pressed against the base support plate 24, and the compression plate 23 is also fixed in the fixing hole 221.
  • the fixing hole 221 as a whole adopts a taper design whose diameter gradually decreases from top to bottom, so that the bristle tuft base support plate 24 in the present embodiment can be more easily squeezed into the hole from the slightly larger opening of the fixing hole 221 and the deeper the pressure is, the harder it is for the base support plate 24 to fall out, playing a good role in the fixing; in the same way, the compression plate 23 can be pressed more easily during manufacture.
  • the diameters of the bristle tuft base support plate 24 and the compression plate 23 and the diameter of the fixing hole 221 on the bristle tuft base 22 are designed in an interference manner, that is the diameters of the bristle tuft base support plate 24 and the compression plate 23 are smaller than the diameter of the opening of the fixing hole 221 but a litter bigger than the diameter of the bottom of the fixing hole 221; when the bristle tuft base support plate 24 and the compression plate 23 are pressed from the upper end of the fixing hole 221 to the bottom, the bristle tuft base support plate 24 and the compression plate 23 are both snapped and fixed in the fixing hole 221 under the action of the interference fit with the inner wall of the fixing hole 221, so that the bristle tuft base support plate 24, the bristle tuft 21 and the compression plate 23 are fixed and the compression plate 23 will not be bounced by the elasticity of the bristle tuft 21 itself after the bristle tuft 21 is pressed into the fixing hole 221.
  • the fixing hole 221 is also inwardly closed to form a certain taper at the opening.
  • the taper is determined by taking the top of the compression plate 23 as the reference, that is, the diameter of the fixing hole 221 above the top of the compression plate 23 is smaller than the diameter of the compression plate 23, Thereby further pressing the compression plate 23 so that it is impossible to be removed from the fixing holes 221.
  • the taper can also play the role of combing the bristle tuft 21, so that the bristle tuft 21 can be folded together without spreading out to the two sides so that the tufts 2 are more aesthetically pleasing.
  • the making process of taper is as follows: after the assembling of the bristle tuft base support plate 24, the bristle tuft 21 and the compression plate 23 are completed, the bristle tuft base 22 is further processed, the bristle tuft 21 is concentrically wrapped around the opening of the fixing hole 221, forming an undercut and the compression plate 23 is pressed.
  • elastic body In this embodiment, the elastic body 31 is a hollow frustoconical natural rubber elastic body. The natural rubber is safe, non-toxic and elastic.
  • the hollow frustoconical shape has certain supporting force and can sag under pressure.
  • the elastic body 31 is connected with the bristle tuft base support plate 24, when the bristle tuft 21 is subjected to the external force of the tooth, the bristle tuft 21 will move the bristle tuft base 22 to compress the elastic body through the bristle tuft base support plate 24 for downward movement; when the external force is withdrawn, the bristle tuft assembly 2 will move upward (reset) under the force of the rubber elastic body.
  • the fixing hole 221 on the bristle tuft base 22 is a through hole which penetrates the upper and lower ends of the bristle tuft base 22; the bristle tuft base support plate 24 is fixed at the lower two-thirds of the fixing hole 221, so that the bristle tuft base support plate 24 is separated from the lowermost end of the fixing hole 221 by a distance and space; when the bristle tuft assembly 2 and the spring assembly 3 are installed, the top of the elastic body 31 on the spring assembly 3 just falls into the space, and the top of the elastic body 31 abuts against the bottom of the bristle tuft base support plate 24 under the elastic force, so that the elastic body 31 is connected with the bottom of each bristle tuft assembly 2 in a one-to-one correspondence.
  • the force of the bristle tuft 21 can directly act on the elastic body 31 through the bristle tuft base support plate 24.
  • the upper end of the elastic body 31 is located at the bottom of the bristle tuft assembly in the fixing hole 221.
  • the elastic body 31 and the bristle tuft base support plate 24 are not connected in a fixed manner.
  • the lower end space of the fixing hole 221 can accommodate the elastic deformation portion of the elastic body 31, so as to prevent the elastic body 31 from deviating to the two sides of the bristle tuft assembly 2 when being elastically deformed.
  • the top end of the elastic body 31 always abuts on the bristle tuft base support plate 24 to have a tendency to deviate to both sides.
  • the top end of the elastic body 31 is always confined in the fixing hole 221 through the lower space of the fixing hole 221 to prevent the elastic body 31 from being detached from the bristle tuft assembly 2 during the elastic deformation of the elastic body 31, further ensuring that each of the elastic bodies 31 and the bristle tuft assembly 2 still have better connection accuracy and stability effectiveness under multiple interactions.
  • the elastic body 31 can also be replaced by other soft and resilient materials, such as one or more of springs, rubber, silicone, EVA elastomer and sponge.
  • the diameter of the bristle tuft base 22 in the present embodiment is slightly smaller than the diameter of the bristle tuft hole 11, so that the entire bristle tuft assembly 2 can move up and down within the bristle tuft hole 11.
  • the top opening of the bristle tuft hole 11 is provided with an inwardly convex flange 111 with a diameter smaller than the diameter of the bristle tuft base 22 so that the bristle tuft assembly 2 can not be removed from the bristle tuft hole 11.
  • the bristle tuft assembly 2 in the initial state is pressed against the lower end surface of the convex flange 111 under the action of the bottom spring assembly 3, thus avoiding the condition that the bristle tuft assembly 2 is not strong enough and swayed left and right.
  • the diameter of the opening of the convex flange 111 is set so that the portion of the bristle tuft 21 protruding from the fixing hole 221 can be tightly bundled into a bundle, making the bristle tuft 21 bundled together can avoid bearing when brushing, avoiding the uneven bearing of the dispersed bristle tuft causing that the spring assembly 3 can not be pressed without enough pressure.
  • the toothbrush back cover 4 which is matched with the shape and size of the part where the bristle tuft holes 11 are arranged on the first body 1.
  • the overall shape of the spring assembly 3 also coincides with the cavity, and the elastic body 31 thereon corresponds in position to the bristle tuft hole 11. As shown in FIG.
  • the prepared bristle tuft assemblies 2 are installed in the bristle tuft holes 11 one by one, the upper ends of the bristle tufts 21 are exposed outside the toothbrush body through the bristle tuft holes 11 for cleaning the teeth; then the entire spring assembly 3 is fixedly mounted in the cavity on the toothbrush back cover 4 of the toothbrush and then the toothbrush back cover 4 of the toothbrush and the first main body 1 are fastened with each other.
  • the bristle tufts 21 exposed on the outside of the toothbrush body act on the tooth surface, the bristle tufts 21 will be subjected to external forces to compress the spring assembly 3 abutting against the bottom of the bristle tuft assembly 2.
  • the extent to which the bristle tufts 21 are exposed to the force of the surface of the teeth and the degree to which the spring assembly 3 are compressed depend on the irregular shape of the surface of the teeth and the force of the user's hand.
  • the most effective part for cleaning tooth is the top portion of the bristle tuft.
  • the bristle tufts of a conventional toothbrush contact with the tooth surface and are applied force by tooth surface, the bristle tufts would bend, making the top portion of the bristle tufts unable to effectively contact with the teeth surface to clean the teeth, which results to bad cleaning effect; and long term bending has serious damage to the properties of the bristle tufts 21, which causes the brush to wear easily and the use life is not long.
  • the bristle tufts 21 in this invention when the bristle tufts 21 in this invention are applied by external force from teeth surface, the bristle tufts 21 would compress spring 31 and move downward, so that they are not easy to bend, which makes the top portion of the bristle tufts always able to directly contact with the teeth surface, and this significantly improves the cleaning effect; at the same time, it also reduces the wear of the bristle tufts and improves the service life of the bristles.
  • the sides of teeth and the gaps between teeth have more room and sunken space compared with the teeth surface, and when the top portion of a bristle tuft moves from tooth surface towards tooth side or the gap between teeth, the compressed elastic body 31 would quickly and responsively moves the top portion of the bristle tuft so that it would contact with the tooth side or the gap between teeth for cleaning purpose, and would not work like conventional toothbrush closely fitted with the teeth which cannot undertake effective cleaning in accordance with the irregular shape of teeth.

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  • Brushes (AREA)
EP17209802.2A 2017-12-21 2017-12-21 Zahnbürste Withdrawn EP3501332A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17209802.2A EP3501332A1 (de) 2017-12-21 2017-12-21 Zahnbürste

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17209802.2A EP3501332A1 (de) 2017-12-21 2017-12-21 Zahnbürste

Publications (1)

Publication Number Publication Date
EP3501332A1 true EP3501332A1 (de) 2019-06-26

Family

ID=60781967

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17209802.2A Withdrawn EP3501332A1 (de) 2017-12-21 2017-12-21 Zahnbürste

Country Status (1)

Country Link
EP (1) EP3501332A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2935755A (en) * 1955-10-14 1960-05-10 Leira Alberto Ramon Tooth-brushes and the like
WO1992008390A2 (en) * 1990-11-20 1992-05-29 Paz, Ohad Brush including spring-mounted bristle holders
JPH0593253U (ja) * 1992-05-22 1993-12-21 莊 俊夫 電動回転式歯ブラシ
US5318352A (en) * 1990-11-20 1994-06-07 Oraline International B.V. Method of making a toothbrush
JP3212964U (ja) * 2017-07-28 2017-10-12 科富創新有限公司 手動歯ブラシ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2935755A (en) * 1955-10-14 1960-05-10 Leira Alberto Ramon Tooth-brushes and the like
WO1992008390A2 (en) * 1990-11-20 1992-05-29 Paz, Ohad Brush including spring-mounted bristle holders
US5318352A (en) * 1990-11-20 1994-06-07 Oraline International B.V. Method of making a toothbrush
JPH0593253U (ja) * 1992-05-22 1993-12-21 莊 俊夫 電動回転式歯ブラシ
JP3212964U (ja) * 2017-07-28 2017-10-12 科富創新有限公司 手動歯ブラシ

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