WO2019157654A1 - Brosse à dents électrique et son procédé de production - Google Patents

Brosse à dents électrique et son procédé de production Download PDF

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Publication number
WO2019157654A1
WO2019157654A1 PCT/CN2018/076707 CN2018076707W WO2019157654A1 WO 2019157654 A1 WO2019157654 A1 WO 2019157654A1 CN 2018076707 W CN2018076707 W CN 2018076707W WO 2019157654 A1 WO2019157654 A1 WO 2019157654A1
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WO
WIPO (PCT)
Prior art keywords
bristles
bristle
shaft
head
motor
Prior art date
Application number
PCT/CN2018/076707
Other languages
English (en)
Chinese (zh)
Inventor
蒋宇振
王亮
段苏华
陈园
Original Assignee
Jc雅博生物科技有限公司
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 Jc雅博生物科技有限公司 filed Critical Jc雅博生物科技有限公司
Priority to PCT/CN2018/076707 priority Critical patent/WO2019157654A1/fr
Publication of WO2019157654A1 publication Critical patent/WO2019157654A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor

Definitions

  • the invention relates to an electric toothbrush, in particular to an electric toothbrush made of thermoplastic bristles and a manufacturing method thereof.
  • thermoplastic bristles have entered our lives more and more, but how to make a variety of brush head structures made of thermoplastic bristles, how to improve the characteristics of thermoplastic bristles When applied to electric toothbrushes, it is more conducive to protecting gums and enamel, and making the electric method meet the requirements of people to protect teeth health is still a problem to be improved.
  • an object of the present invention to provide an electric toothbrush that is rotated and reciprocated by a brush head formed of a thermoplastic bristle material at one time.
  • An electric toothbrush is composed of a brush head and a handle connecting, the brush head comprising a brush head housing, a bristle head integral structural member, an electric conduction shaft and a connected gear shaft, wherein the handle comprises a handle housing , the motor, the motor power shaft and the motor component, wherein the motor power shaft is connected with the electric conduction shaft, and the feature is:
  • the bristle head integral structural member is formed by two injection moldings of the bristle holder and the bristles, wherein the bristles are made by overmolding on the basis of the bristle holder, and the bottom of the bristle holder is simultaneously injection molded with bumps, and the bumps are left Limited hole and gear stroke chamber;
  • the gear shaft is a triangular cam.
  • the gear shaft is an eccentric curved wheel.
  • the bristle tip is a single-point or double-tip structure.
  • the bristles are three-stage single-point or double-tip structure bristles.
  • a method of manufacturing an electric toothbrush comprising the steps of:
  • Step one the brush holder adopts an integral molding injection process, the brush holder is a porous structure for overmolding the bristles; the back of the brush holder has a bump at the same time, and a limited hole and a gear stroke cavity are left on the protrusion;
  • Step two forming a bristle head integral structural member by overmolding on the basis of the above-mentioned bristle holder, and the bristles and the bristle holder are combined by the secondary injection molding into an integral structure;
  • Step 3 one end of the gear shaft connected to the electric conduction shaft is placed in the gear stroke cavity of the bristle holder bump, and the other end is connected with the electric conduction shaft, so that the bristle head integral structural member is in the motor, the motor power shaft and the motor thereof. Rotate and reciprocate under the drive of the accessory.
  • Step 4 taking a pin through the limiting hole to fix the bristle head integral structural member and the two sides of the brush head housing;
  • Step 5 A sealing assembly is arranged between the output part of the power shaft of the electric toothbrush handle and the handle housing, so that the whole handle is a closed structure, so that the brush head is separated from the motor core and its accessories; finally, the brush head is connected with the handle.
  • the structure of the bristle holder bump limiting hole and the gear stroke chamber is matched with the shape and the movement stroke of the gear shaft.
  • the bristle head integral structural member is made by injection molding from a thermoplastic material.
  • the sealing assembly is made by integrally molding with silica gel.
  • the motor core and the accessory thereof are low-speed reciprocating motion, highly imitating the upper and lower brushing motion recommended by the dentist, and fully protecting the gum; using an electric toothbrush with an integrally injection-type double-tip brush head, the tip density is smaller than the single point Double the size, increase the contact between the bristles and the tooth surface, the cleaning power is doubled, and the pressure on the gums and enamel is reduced, and the cleaning process is more comfortable.
  • the bristle head of the invention is integrally formed by thermoplastic material, and the thermoplastic material itself has a certain antibacterial effect.
  • the integrally formed bristle head completely seals the root of the bristle, is easy to clean and the bacteria are difficult to accommodate; and the thermoplastic material itself is soft and elastic. The eraser effect avoids scratching and abrasion of the gums and enamel while producing a good cleaning and polishing effect.
  • Figure 1 is a cross-sectional view showing the structure of a rotary and reciprocating brush head of the toothbrush of the present invention
  • FIG. 2 is a schematic structural view of the brush head and the handle after assembly according to the present invention.
  • Figure 3 is an analytical diagram of the principle of moving the bristles of the present invention.
  • FIG. 4 is a cross-sectional view showing the structure of a triangular cam type transmission gear shaft brush head according to the present invention
  • Figure 5 is a schematic cross-sectional view showing the eccentric crankshaft transmission gear shaft brushing structure of the present invention.
  • Figure 6 is a schematic cross-sectional view showing the structure and movement position of the oscillating transmission gear shaft of the present invention.
  • Figure 7 is a schematic view showing four structures of a single bristles of a thermoplastic material of the present invention.
  • Figure 8 is a schematic structural view of a first preferred embodiment of the bristles of the present invention.
  • Figure 9 is a schematic view showing the structure of a second preferred embodiment of the bristles of the present invention.
  • Figure 10 is a schematic structural view of a third preferred embodiment of the bristles of the present invention.
  • Figure 11 is a schematic view showing the structure of a fourth preferred embodiment of the bristles of the present invention.
  • Figure 12 is a schematic view showing the structure of a fifth preferred embodiment of the bristles of the present invention.
  • Figure 13 is a schematic view showing the structure of a sixth preferred embodiment of the bristles of the present invention.
  • Figure 14 is a schematic view showing the structure of a seventh preferred embodiment of the bristles of the present invention.
  • Figure 15 is a schematic view showing the structure of an eighth preferred embodiment of the bristles of the present invention.
  • Figure 16 is a schematic view showing the structure of a ninth preferred embodiment of the bristles of the present invention.
  • Figure 17 is a schematic view showing the structure of the first preferred embodiment of the motor core and its accessories in the handle of the present invention.
  • Figure 18 is a schematic view showing the structure of the second preferred embodiment of the motor core and its accessories in the handle of the present invention.
  • Figure 19 is a schematic view showing the structure of the third preferred embodiment of the motor core and its accessories in the handle of the present invention.
  • Figure 20 is a cross-sectional view showing the assembly of the electric toothbrush of the five preferred configurations of the present invention.
  • an electric toothbrush of the present invention is composed of a brush head and a handle connecting, and the brush head includes a brush head shell 310, a bristle head integral structural member, an electric conduction shaft 402 and a connected gear shaft. 401.
  • the handle includes a handle assembly 320, a motor 450, a motor power shaft 440, and a motor assembly such as a battery 460, a circuit board 410, and a seal assembly 431.
  • the bristle head integral structural member is formed by two injection moldings of the bristle holder and the bristles, wherein the bristles are made by overmolding on the basis of the bristles, and the bristles and the bristles can be made of thermoplastic materials, for example.
  • the silicone rubber material may also be used.
  • the hardness of the thermoplastic material is less than 90A. See also FIG.
  • the brush holder is simultaneously injection molded with a bump, and the limiting hole 201 and the gear stroke cavity 202 are left on the bump; a pin passes through the limiting hole to fix the bristle head integral structural member and the brush head housing; the gear shaft is engaged at one end in the gear stroke cavity, and the other end is connected with the electric conduction shaft, so that the bristle head is integrated
  • the structural member is rotated and reciprocated under the driving of the motor, the motor power shaft and its motor components.
  • the brush movement principle of the present invention is analyzed: when the transmission gear is located on the left side and rotates counterclockwise, the transmission gear shaft and the upper tooth row mesh with each other, so that the bristles move to the left side, when the transmission gear shaft moves to the most On the right side, the last tooth of the transmission gear is separated from the contact surface with the upper tooth row, and the first tooth below the first tooth just reaches the lower tooth row, and the force is transmitted to the lower tooth row, followed by bristles The whole begins to move to the right side, so it goes round and round to achieve a clean effect.
  • the transmission gear shaft when the electric conduction shaft performs a rotary motion, can also adopt a triangular cam structure, which engages with the gear stroke chamber; or as shown in FIG. 5, the transmission gear shaft can also be used.
  • An eccentric crank structure which engages with the gear stroke chamber; when the electric conduction shaft swings at an angle from left to right, for example, swings 45° left and right, the mounting structure and the movement position of the transmission gear shaft and the gear stroke chamber See Figure 6 (a), (b), (c).
  • the bristles of the present invention are integrally molded by using a thermoplastic material, wherein the single bristles can have at least four structures, as shown in FIG.
  • Figure 7 (a) shows a single-pointed bristles
  • Figure 7 (b) shows a double-tip bristles
  • Figure 7 (c) shows a staged single-tip bristles
  • Figure 7 (d) It is a staged double-tip structure bristles; the stage can be two stages or three stages or multiple stages.
  • the brush head according to the present invention may be of a circular shape, an elliptical shape or a roller type, and the brush heads may be arranged in combination with the above-mentioned bristle structure to form brush heads of various shapes.
  • Figure 8 shows the appearance of a circular single-tip thermoplastic brush head;
  • Figure 9 shows the appearance of a circular double-tip thermoplastic brush head;
  • Figure 10 shows a circular three-stage single-tip thermoplastic brush.
  • Figure 11 is the appearance structure of the circular three-stage double-tip hair thermoplastic brush head
  • Figure 12 shows the appearance structure of the oval single-tip hair thermoplastic brush head
  • Figure 13 shows the oval double-tip hair thermoplastic
  • Figure 1 shows the appearance of the elliptical three-stage single-tip hair thermoplastic brush head
  • Figure 15 shows the appearance of the oval three-stage double-tip hair thermoplastic brush head.
  • Figure 16 is a drum type brush head appearance structure, wherein the bristles of the drum type brush head can be combined according to different sheet-like bristles to form a single-tip brush head as shown in Fig. 16 (a), as shown in Fig. 16 (b) a double-tip brush head, a single-tip three-stage brush head as shown in Fig.
  • the bristles are a three-stage single-tip or the like, and are combined into a mixed mode as shown in Figs. 16(e), 16(f), 16(g), 16(h), and the like.
  • FIG. 17 is a schematic view showing the structure of the first preferred embodiment of the motor core and its accessories of the present invention, which can be used for the structure of the handle of the ultrasonic motor core.
  • the motor core and its accessories may be composed of a control circuit 410, a charging coil 420, a movement bracket 430, a motor 450, and a battery 460, on which the power shaft 440 is mounted.
  • the seal assembly may be a pair of concave and convex fit thermoplastic Pieces, such as seal assemblies 431 and 432, may also be a single seal, the material of which may also be made of silicone to form a waterproof structure.
  • the outer casing and the motor core are tightly fitted to prevent the finished product from generating noise due to the vibration of the motor during operation.
  • the brush head is inserted at the exposed power shaft end, and the connecting portion of the brush head is tightly matched with the power shaft.
  • FIG. 18 it is a structural schematic diagram of the second preferred embodiment of the motor core and its accessories in the brush handle.
  • the power shaft drives the electric conduction shaft to perform a rotary motion
  • the speed of the reciprocating motion can be reduced in the motor to reduce the rotation of the toothbrush.
  • a reduction gear box 451 is attached to the power shaft.
  • FIG. 19 is a schematic view showing the structure of the third preferred embodiment of the motor core and its accessories in the handle of the present invention.
  • the working mode of the gear box 451 can be enlarged as shown in the figure. Part of it.
  • FIG. 20 is a schematic cross-sectional view of the five preferred structural electric toothbrushes of the present invention, wherein FIG. 20(a) is a schematic view of the assembled structure of the oscillating brush head and the handle structure, and FIG. 20(b) is a reciprocating brush.
  • FIG. 20(c) is a schematic view showing the structure of the roller type brush head and the handle after assembly
  • Fig. 20(d) is a schematic view showing the structure of the rotary plus reciprocating brush head and the handle assembly
  • Fig. 20 (Fig. 20 e) Schematic diagram of the assembly of the ultrasonic electric toothbrush head and the handle.
  • a method of manufacturing an electric toothbrush comprising the steps of:
  • Step one using a one-piece molding material to inject a brush holder, the bottom of the brush holder is injected with a bump, and a limited hole and a gear stroke cavity are left on the protrusion, and the bottom of the brush holder is a mesh structure for secondary injection molding;
  • Step two the bristles are formed by double injection molding to the bristles, and the bristles and the bristles are seamlessly welded into an integrated structure;
  • Step 3 the gear shaft connected to the electric conduction shaft is placed in the gear stroke cavity of the bristle holder bump, and the brush head housing is connected to the bristle head through the pin upper limit hole through the pin;
  • Step 4 a sealing component is arranged between the output part of the power shaft of the electric toothbrush handle and the handle housing, so that the whole handle is a closed structure, so that the brush head is separated from the motor core and its accessories;
  • step five the brush head is connected to the handle of the built-in motor core and its accessories.
  • the structure of the bottom limit hole and the gear stroke cavity of the bristle holder is matched with the movement mode of the electric conduction shaft.
  • the bristle head integral structural member is made by injection molding with a food grade non-toxic and environmentally friendly thermoplastic material.
  • the sealing assembly is made by integrally molding with silica gel.

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Brushes (AREA)

Abstract

L'invention concerne une brosse à dents électrique, formée en reliant une tête de brosse à dents et un manche de brosse. La tête de brosse à dents comprend un boîtier de tête de brosse (310), un élément structurel intégral de tête de crin, et un arbre de transmission électrique (402) et un arbre d'engrenage (401) reliés à celle-ci. Le manche de brosse comprend un boîtier de manche de brosse (320), un moteur (450) et des accessoires. L'élément structurel intégral de tête de crin est fabriqué en réalisant un moulage par injection sur un support de crins et des crins au moins deux fois. Une tête de crin est formée d'un seul tenant à partir d'un matériau thermoplastique, de telle sorte que la racine de crin est entièrement scellée et est facile à nettoyer, et la pénétration de bactéries est difficile. L'effet effaceur du matériau thermoplastique évite les rayures et les dommages sur les gencives et l'émail dentaire et, de ce fait, fournit de bons effets de nettoyage et de polissage.
PCT/CN2018/076707 2018-02-13 2018-02-13 Brosse à dents électrique et son procédé de production WO2019157654A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/076707 WO2019157654A1 (fr) 2018-02-13 2018-02-13 Brosse à dents électrique et son procédé de production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/076707 WO2019157654A1 (fr) 2018-02-13 2018-02-13 Brosse à dents électrique et son procédé de production

Publications (1)

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WO2019157654A1 true WO2019157654A1 (fr) 2019-08-22

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5784743A (en) * 1996-12-30 1998-07-28 Addway Engineering Limited Electric toothbrushes
CN1441644A (zh) * 2000-07-10 2003-09-10 科伦特工厂有限公司 用于制造刷具的方法和装置以及刷具
CN202858192U (zh) * 2012-08-01 2013-04-10 林桂炎 一种一体化软胶刷毛的牙刷
CN103957747A (zh) * 2011-12-02 2014-07-30 博朗有限公司 制备用于口腔护理装置的刷头区段的方法和装置以及由所述方法和/或所述装置制备的刷头区段
CN106659554A (zh) * 2014-04-04 2017-05-10 劳丽·拉蒂卡 用于电动牙刷的刷头
US20170164724A1 (en) * 2015-12-14 2017-06-15 Colgate-Palmolive Company Oral care implement
CN206355171U (zh) * 2016-07-30 2017-07-28 东莞英伍电子有限公司 一种电动牙刷头
CN107041792A (zh) * 2017-02-08 2017-08-15 河源唯缇科技有限公司 一种套接式刷毛套牙刷装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5784743A (en) * 1996-12-30 1998-07-28 Addway Engineering Limited Electric toothbrushes
CN1441644A (zh) * 2000-07-10 2003-09-10 科伦特工厂有限公司 用于制造刷具的方法和装置以及刷具
CN103957747A (zh) * 2011-12-02 2014-07-30 博朗有限公司 制备用于口腔护理装置的刷头区段的方法和装置以及由所述方法和/或所述装置制备的刷头区段
CN202858192U (zh) * 2012-08-01 2013-04-10 林桂炎 一种一体化软胶刷毛的牙刷
CN106659554A (zh) * 2014-04-04 2017-05-10 劳丽·拉蒂卡 用于电动牙刷的刷头
US20170164724A1 (en) * 2015-12-14 2017-06-15 Colgate-Palmolive Company Oral care implement
CN206355171U (zh) * 2016-07-30 2017-07-28 东莞英伍电子有限公司 一种电动牙刷头
CN107041792A (zh) * 2017-02-08 2017-08-15 河源唯缇科技有限公司 一种套接式刷毛套牙刷装置

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