WO2019157654A1 - Electric toothbrush and production method therefor - Google Patents
Electric toothbrush and production method therefor Download PDFInfo
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- 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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- bristles
- bristle
- shaft
- head
- motor
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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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Abstract
An electric toothbrush, constituted by connecting a toothbrush head and a brush handle. The toothbrush head comprises a brush head housing (310), a bristle head integral structural member, and an electric transmission shaft (402) and a gear shaft (401) connected thereto. The brush handle comprises a brush handle housing (320), a motor (450), and accessories. The bristle head integral structural member is made by performing injection molding on a bristle holder and bristles for at least twice. A bristle head is formed integrally from a thermoplastic material so that the bristle root is totally sealed and is easy to clean, and it is difficult for bacteria to invade. The eraser effect of the thermoplastic material avoids the scratch and damage on gums and tooth enamel as well as producing good cleaning and polishing effects.
Description
本发明涉及一种电动牙刷，特别涉及一种由热塑性刷毛材质制成的电动牙刷及其制造方法。The invention relates to an electric toothbrush, in particular to an electric toothbrush made of thermoplastic bristles and a manufacturing method thereof.
现在市场上存在有手动牙刷和电动牙刷，各有缺点，手动□刷由于人们刷牙的习惯不同，难以完全清除牙菌斑；而用传统尼龙刷毛制造的电动牙刷，因尼龙丝材质特性和刷毛在牙釉质表面的高频振动摩擦，易造成对牙龈及牙釉质的过度磨损，而如果采用过软的尼龙刷毛又会导致清洁力不足。另一方面，传统植入型尼龙刷毛牙刷，其结构在尼龙刷毛间、刷毛束与刷头底板的孔洞间存在无数细小孔隙，极易滋生细菌。There are manual toothbrushes and electric toothbrushes on the market, each with its own shortcomings. Manual brushing is difficult to completely remove plaque due to different habits of brushing teeth. Electric toothbrushes made of traditional nylon bristles are characterized by nylon material and bristles. The high frequency vibration of the enamel surface is prone to excessive wear on the gums and enamel, and if the soft nylon bristles are used, the cleaning power will be insufficient. On the other hand, the conventional implanted nylon brush toothbrush has a structure in which there are numerous fine pores between the nylon bristles, the bundle of the bristles and the bottom of the brush head, and it is easy to breed bacteria.
目前，一体成型的热塑性刷毛材质制成的牙刷已经越来越多的进入我们的生活，但是由热塑性刷毛材质制成的多种刷头结构如何实现电驱动，如何改进热塑性刷毛的特性使其在应用于电动牙刷时更利于保护牙龈和牙釉质，并使电动方式符合人们保护牙齿健康的要求，仍是一个有待改进的问题。At present, toothbrushes made of one-piece 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.
发明内容Summary of the invention
为克服已有技术中存在的问题，本发明的目的是提供一种由热塑性刷毛材料一次成型的刷头实现旋转加往复运动的电动牙刷。In order to overcome the problems in the prior art, it is 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.
一种电动牙刷，是由刷头和刷柄连接构成，所述的刷头包括刷头外壳、刷毛头一体结构件、电动传导轴及相连接的齿轮轴，所述的刷柄包括刷柄外壳、电机、电机动力轴以及电机配件，所述的电机动力轴与电动传导轴连接，其特征是：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:
所述的刷毛头一体结构件是由刷毛托及刷毛经过两次注塑制成的，其中 刷毛是在刷毛托的基础上二次注塑制成，刷毛托底部同时注塑有凸块，凸块上留有限位孔及齿轮行程腔；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;
取一销钉穿过上述限位孔将所述刷毛头一体结构件与刷头外壳两侧固定；所述的齿轮轴一端咬合运行在齿轮行程腔中，另一端与电动传导轴连接，使得刷毛头一体结构件在电机、电机动力轴及其电机配件的驱动下做旋转加往复运动。Passing a pin through the limiting hole to fix the bristle head integral structural member to both sides of the brush head housing; the gear shaft is engaged at one end in the gear stroke chamber, and the other end is connected with the electric conduction shaft, so that the bristle head The integral structural member is rotated and reciprocated under the driving of the motor, the motor power shaft and its motor components.
所述的齿轮轴是三角形凸轮。The gear shaft is a triangular cam.
所述的齿轮轴是偏心曲轮。The gear shaft is an eccentric curved wheel.
所述的刷毛毛尖为单尖或双尖结构。The bristle tip is a single-point or double-tip structure.
所述的刷毛为三阶段单尖或双尖结构刷毛。The bristles are three-stage single-point or double-tip structure bristles.
一种电动牙刷的制造方法，其特征是包括以下步骤：A method of manufacturing an electric toothbrush, comprising the steps of:
步骤一，刷毛托采用一体成型注塑工艺，所述的刷毛托为多孔结构，以便二次注塑刷毛；所述的刷毛托背面同时带有凸块，凸块上留有限位孔及齿轮行程腔；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;
步骤二，在上述刷毛托基础上二次注塑制成刷毛头一体结构件，刷毛与刷毛托经二次注塑结合为一体结构；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;
步骤三，将与电动传导轴连接的齿轮轴一端置于上述刷毛托凸块上的齿轮行程腔内，另一端与电动传导轴连接，使得刷毛头一体结构件在电机、电机动力轴及其电机配件的驱动下做旋转加往复运动。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.
步骤四，取一销钉穿过上述限位孔将所述刷毛头一体结构件与刷头外壳两侧固定；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;
步骤五，电动牙刷手柄动力轴输出部分与手柄壳体之间装有密封组件，使得刷柄整体为密闭结构，使得刷头与电动机芯及其配件隔离；最后牙刷头与刷柄连接。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.
所述的刷毛托凸块限位孔及齿轮行程腔的结构与齿轮轴的形状及运动 行程相匹配构成。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.
所述的刷毛头一体结构件是采用热塑性材质注塑制成。The bristle head integral structural member is made by injection molding from a thermoplastic material.
所述的密封组件是采用硅胶一体成型制成。The sealing assembly is made by integrally molding with silica gel.
本发明电动机芯及其配件为中低速往复式运动，高度模仿了牙医所推荐的上下式刷牙动作，充分保护牙龈；采用带有一体注塑式双尖毛刷头的电动牙刷，毛尖密度比单尖式增大一倍，增加了刷毛与牙齿表面的接触，清洁力成倍提高，同时又减小了对于牙龈及牙釉质的压强，清洁过程更加舒适。本发明刷毛头采用热塑性材质一体成型制成，热塑性材质本身兼具定的抗菌作用，一体成型的刷毛头使得刷毛根部完全密封，易清理且细菌难以容身；又因热塑性材料自身柔软且有弹性的橡皮擦效应而在产生良好清洁、抛光效果的同时避免对牙龈、牙釉质的刮擦和磨损。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.
图1是本发明牙刷的旋转加往复式刷头结构剖面图；Figure 1 is a cross-sectional view showing the structure of a rotary and reciprocating brush head of the toothbrush of the present invention;
图2是本发明刷头与刷柄组装后结构示意图；2 is a schematic structural view of the brush head and the handle after assembly according to the present invention;
图3是本发明刷毛移动原理解析图；Figure 3 is an analytical diagram of the principle of moving the bristles of the present invention;
图4是本发明三角形凸轮式传动齿轮轴刷头结构剖面示意图；4 is a cross-sectional view showing the structure of a triangular cam type transmission gear shaft brush head according to the present invention;
图5是本发明偏心曲轴式传动齿轮轴刷调结构剖面示意图；Figure 5 is a schematic cross-sectional view showing the eccentric crankshaft transmission gear shaft brushing structure of the present invention;
图6是本发明摆动式传动齿轮轴刷头结构及运动位置变化剖面示意图；Figure 6 is a schematic cross-sectional view showing the structure and movement position of the oscillating transmission gear shaft of the present invention;
图7是本发明热塑性材质的单根刷毛四种结构示意图；Figure 7 is a schematic view showing four structures of a single bristles of a thermoplastic material of the present invention;
图8是本发明刷毛第一较佳实施例结构示意图；Figure 8 is a schematic structural view of a first preferred embodiment of the bristles of the present invention;
图9是本发明刷毛第二较佳实施例结构示意图；Figure 9 is a schematic view showing the structure of a second preferred embodiment of the bristles of the present invention;
图10是本发明刷毛第三较佳实施例结构示意图；Figure 10 is a schematic structural view of a third preferred embodiment of the bristles of the present invention;
图11是本发明刷毛第四较佳实施例结构示意图；Figure 11 is a schematic view showing the structure of a fourth preferred embodiment of the bristles of the present invention;
图12是本发明刷毛第五较佳实施例结构示意图；Figure 12 is a schematic view showing the structure of a fifth preferred embodiment of the bristles of the present invention;
图13是本发明刷毛第六较佳实施例结构示意图；Figure 13 is a schematic view showing the structure of a sixth preferred embodiment of the bristles of the present invention;
图14是本发明刷毛第七较佳实施例结构示意图；Figure 14 is a schematic view showing the structure of a seventh preferred embodiment of the bristles of the present invention;
图15是本发明刷毛第八较佳实施例结构示意图；Figure 15 is a schematic view showing the structure of an eighth preferred embodiment of the bristles of the present invention;
图16是本发明刷毛第九较佳实施例结构示意图；Figure 16 is a schematic view showing the structure of a ninth preferred embodiment of the bristles of the present invention;
图17是本发明刷柄内电动机芯及其配件第一较佳实例结构安装示意图；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;
图18是本发明刷柄内电动机芯及其配件第二较佳实例结构安装示意图；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;
图19是本发明刷柄内电动机芯及其配件第三较佳实例结构安装示意图；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;
图20是本发明五种较佳结构的电动牙刷组装后剖面图。Figure 20 is a cross-sectional view showing the assembly of the electric toothbrush of the five preferred configurations of the present invention.
在以下的叙述中，为了使读者更好地理解本申请而提出了许多技术细节。但是，本领域的普通技术人员可以理解，即使没有这些技术细节和基于以下各实施例的种种变化和修改，也是本申请各项权利要求所要求保护的技术方案。In the following description, numerous technical details are set forth in order to provide the reader with a better understanding of the present application. However, those skilled in the art can understand that the technical solutions claimed in the claims of the present application are not limited by the technical details and the various changes and modifications of the following embodiments.
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明的实施方式作进一步地详细描述。The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.
如图1所示，本发明一种电动牙刷，是由刷头和刷柄连接构成，所述的刷头包括刷头外壳310、刷毛头一体结构件、电动传导轴402及相连接的齿轮轴401，所述的刷柄包括刷柄外壳320、电机450、电机动力轴440以及电池460、线路板410、和密封组件431等电机配件。As shown in FIG. 1 , 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.
所述的刷毛头一体结构件是由刷毛托及刷毛经过两次注塑制成的，其中刷毛是在刷毛托的基础上二次注塑制成，刷毛及刷毛托均可采用热塑性材质制成，例如热塑性聚氨酯弹性体(TPEU)，热塑性苯乙烯弹性体(TPES)，热塑性聚酰胺弹性体(TPEA)，热塑性聚烯烃弹性体(TPEO)，热塑性聚酯 弹性体(TPEE))或聚氨酯(PU)等，也可以采用硅橡胶类材质，所述的热塑性材质的硬度小于90A；又见图1，所述的刷毛托同时注塑有凸块，凸块上留有限位孔201及齿轮行程腔202；取一销钉穿过上述限位孔将所述刷毛头一体结构件与刷头外壳两侧固定；所述的齿轮轴一端咬合运行在齿轮行程腔中，另一端与电动传导轴连接，使得刷毛头一体结构件在电机、电机动力轴及其电机配件的驱动下做旋转加往复运动。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. Thermoplastic polyurethane elastomer (TPEU), thermoplastic styrene elastomer (TPES), thermoplastic polyamide elastomer (TPEA), thermoplastic polyolefin elastomer (TPEO), thermoplastic polyester elastomer (TPEE) or polyurethane (PU), etc. The silicone rubber material may also be used. The hardness of the thermoplastic material is less than 90A. See also FIG. 1 , 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.
如图3所示为本发明刷毛移动原理解析：当传动齿轮位于左侧且为逆时针旋转时，传动齿轮轴与上部齿排相互咬合，使得刷毛向左侧移动，当传动齿轮轴移至最右侧时，传动齿轮的最后一个齿便脱离了与上部齿排的接触面，下方第一个齿正好到达下方齿排的第一个齿，开始将作用力传递到下方齿排，随之刷毛整体开始向右侧移动，如此周而复始，达到清洁效果。As shown in FIG. 3, 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.
如图4所示，当电动传导轴做旋转运动时，传动齿轮轴也可以采用三角形凸轮式结构，其与所述齿轮行程腔做咬合运动；或者如图5所示，传动齿轮轴还可以采用偏心曲轴式结构，其与所述齿轮行程腔做咬合运动；当电动传导轴以左右某角度摆动时，例如以左右∠45°摆动，传动齿轮轴与所述齿轮行程腔的安装结构及运动位置可参见图6(a)、(b)、(c)所示。As shown in FIG. 4, when the electric conduction shaft performs a rotary motion, the transmission gear shaft 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).
本发明所述的刷毛是采用热塑性材质一体注塑制成的，其中单根刷毛至少可以有四种结构，如图7所示。图7(a)所示是单尖毛结构刷毛；图7(b)所示是双尖毛结构刷毛；图7(c)所示是阶段式单尖毛结构刷毛；图7(d)所示是阶段式双尖毛结构刷毛；所述的阶段式可以是二阶段，也可以是三阶段或多阶段。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.
本发明所述的刷头可以是圆形、椭圆形或滚筒型等，与上述刷毛结构进行排列组合可以制成各种不同形状的刷头。如图8所示为圆形单尖毛热塑刷头外观结构；图9所示为圆形双尖毛热塑刷头外观结构；图10所示为圆形三阶段单尖毛热塑刷头外观结构；图11为圆形三阶段双尖毛热塑刷头外观结构；图12所示为椭圆形单尖毛热塑刷头外观结构；图13所示为椭圆形双 尖毛热塑刷头外观结构图；图14所示为椭圆形三阶段单尖毛热塑刷头外观结构；图15为椭圆形三阶段双尖毛热塑刷头外观结构。图16为滚筒型刷头外观结构，其中滚筒型刷头的刷毛可根据不同的片状刷毛叠加组合成如图16(a)所示的单尖刷头、如图16(b)所示的双尖刷头、如图16(c)所示的单尖三阶段刷头、如图16(d)所示的双尖三阶段刷头，或者将上述片状刷毛混合排列，例如一片单尖刷毛一片三阶段单尖等等，组合成混合模式，如图16(e)、16(f)、16(g)、16(h)等所示结构。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. The appearance structure of the head; 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. 16(c), a double-tip three-stage brush head as shown in Fig. 16(d), or a mixture of the above-mentioned sheet-like bristles, for example, a single tip 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.
上述刷头与刷柄连接，例如插接，可以组装成完整的电动牙刷。图17所示是本发明刷柄内电动机芯及其配件第一较佳实例结构安装示意图，可用于超声波电动机芯的刷柄结构。如图17所示，所述的电动机芯及其配件可以是由控制电路410、充电线圈420、机芯支架430、电机450及电池460组成，所述的电动机芯上安装有动力轴440。安装时，先将控制电路安装到机芯支架上，再依次将电机、电池、充电线圈安装到机芯支架的专有位置上，并将充电线圈输出端连线焊接到控制电路上，使之形成一个完整的电动驱动机芯回路，然后将电动机芯从手柄外壳的底部向上推入，直至穿过机芯顶部的密封组件与外壳压实，所述的密封组件可以是一对凹凸配合热塑件，例如密封组件431和432，也可以是单个密封件，密封组件的材料还可以由硅胶制成，形成防水结构。外壳与电动机芯为紧配合，用以防止成品在工作时由于电机的震动产生杂音。使用时，将刷头插在外露的动力轴端，刷头的连接部分与动力轴为紧配合。The brush head is connected to the handle, for example, and can be assembled into a complete electric toothbrush. Figure 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. As shown in FIG. 17, 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. When installing, first install the control circuit on the movement bracket, then install the motor, battery and charging coil to the exclusive position of the movement bracket in turn, and wire the output end of the charging coil to the control circuit to make it Forming a complete electric drive movement circuit, and then pushing the motor core upward from the bottom of the handle housing until the seal assembly passing through the top of the movement is compacted with the outer casing, 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. In use, 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.
如图18所示，是本发明刷柄内电动机芯及其配件第二较佳实例结构安装示意图，当动力轴带动电动传导轴做旋转运动时，为降低牙刷旋转加往复运动的速度可在电机与动力轴之间加装减速齿轮箱451。As shown in FIG. 18, it is a structural schematic diagram of the second preferred embodiment of the motor core and its accessories in the brush handle. When 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.
如图19所示，是本发明刷柄内电动机芯及其配件第三较佳实例结构安装示意图，当电动传导轴以左右某角度摆动时，所述的齿轮箱451的工作方式可如图放大部分所示。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. When the electric conduction shaft is swung at an angle from left to right, the working mode of the gear box 451 can be enlarged as shown in the figure. Part of it.
如图20所示，是本发明五种较佳结构电动牙刷组装后剖面示意图，其中图20(a)为摆动式刷头和刷柄结构组装后示意图，图20(b)为往复运动式刷头和刷柄结构组装后示意图，图20(c)为滚筒型刷头和刷柄组装后结构示意图，图20(d)为旋转加往复式刷头和刷柄组装后结构示意图，图20(e)为超声波电动牙刷刷头和刷柄组装后结构示意图。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, and 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.
一种电动牙刷的制造方法，其特征是包括以下步骤：A method of manufacturing an electric toothbrush, comprising the steps of:
步骤一，采用一体成型材料注塑刷毛托，所述的刷毛托底部注塑一凸块，凸块上留有限位孔及齿轮行程腔，刷毛托底部为网状结构，以备二次注塑；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;
步骤二，向上述刷毛托二次注塑制成刷毛，此时刷毛与刷毛托无缝熔接为一体结构；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;
步骤三，与电动传导轴连接的齿轮轴置于上述刷毛托凸块上的齿轮行程腔内，刷头外壳通过销钉穿过凸块上限位孔与刷毛头连接；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;
步骤四，电动牙刷手柄动力轴输出部分与手柄壳体之间装有密封组件，使得刷柄整体为密闭结构，使得刷头与电动机芯及其配件隔离；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;
步骤五，牙刷头与内装电动机芯及其配件的刷柄连接。In step five, the brush head is connected to the handle of the built-in motor core and its accessories.
所述的刷毛托底部限位孔及齿轮行程腔的结构与电动传导轴运动方式相匹配构成。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.
所述的刷毛头一体结构件是采用食品级无毒环保热塑性材质注塑制成。The bristle head integral structural member is made by injection molding with a food grade non-toxic and environmentally friendly thermoplastic material.
所述的密封组件是采用硅胶一体成型制成。The sealing assembly is made by integrally molding with silica gel.
需要说明的是，虽然通过参照本发明的某些优选实施例，已经对本发明进行了图示和描述，但本领域的普通技术人员应该明白，可以在形式上和细节上对其作各种改变，而不偏离本发明的精神和范围，应属于本发明的保护范围。It is to be understood that the present invention has been shown and described with reference to the preferred embodiments of the invention, Without departing from the spirit and scope of the invention, it should fall within the scope of the invention.
Claims (10)
- 一种电动牙刷，是由刷头和刷柄连接构成，所述的刷头包括刷头外壳、刷毛头一体结构件、电动传导轴及相连接的齿轮轴，所述的刷柄包括刷柄外壳、电机、电机动力轴以及电机配件，所述的电机动力轴与电动传导轴连接，其特征是：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:所述的刷毛头一体结构件是由刷毛托及刷毛经过两次注塑制成的，其中刷毛是在刷毛托的基础上二次注塑制成，刷毛托底部同时注塑有凸块，凸块上留有限位孔及齿轮行程腔；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;取一销钉穿过上述限位孔将所述刷毛头一体结构件与刷头外壳两侧固定；所述的齿轮轴一端咬合运行在齿轮行程腔中，另一端与电动传导轴连接，使得刷毛头一体结构件在电机、电机动力轴及其电机配件的驱动下做旋转加往复运动。Passing a pin through the limiting hole to fix the bristle head integral structural member to both sides of the brush head housing; the gear shaft is engaged at one end in the gear stroke chamber, and the other end is connected with the electric conduction shaft, so that the bristle head The integral structural member is rotated and reciprocated under the driving of the motor, the motor power shaft and its motor components.
- 根据权利要求1所述的一种电动牙刷，其特征是所述电动传导轴做旋转运动时，所述的齿轮轴是三角形凸轮。An electric toothbrush according to claim 1, wherein said gear shaft is a triangular cam when said electrically driven shaft is rotated.
- 根据权利要求1所述的一种电动牙刷，其特征是所述电动传导轴做旋转运动时，所述的齿轮轴是偏心曲轮。An electric toothbrush according to claim 1, wherein said gear shaft is an eccentric curved wheel when said electric conduction shaft is rotated.
- 根据权利要求1所述的一种电动牙刷，其特征是所述的刷毛毛尖为单尖或双尖结构之一。An electric toothbrush according to claim 1, wherein said bristle tip is one of a single-tipped or double-tipped structure.
- 根据权利要求1和4所述的一种电动牙刷，其特征是所述的刷毛为三阶段刷毛。An electric toothbrush according to claims 1 and 4, wherein said bristles are three-stage bristles.
- 根据权利要求4和5所述的一种电动牙刷，其特征是所述的刷毛头是滚筒型刷毛头，所述的刷毛是单尖刷毛、单尖三阶段刷毛、双尖刷毛、双尖三阶段刷毛或者其混合组合之一。An electric toothbrush according to claims 4 and 5, wherein said bristle head is a drum type bristle head, said bristles being single-tip bristles, single-point three-stage bristles, double-tip bristles, double-tip bristles Stage bristles or one of its mixed combinations.
- 一种电动牙刷的制造方法，其特征是包括以下步骤：A method of manufacturing an electric toothbrush, comprising the steps of:步骤一，采用一体成型材料注塑刷毛托，所述的刷毛托为网状结构，以便二次注塑刷毛；所述的刷毛托同时注塑有凸块，凸块上留有限位孔及齿轮行程腔；Step one, using an integral molding material to inject the brush holder, the brush holder is a mesh structure for overmolding the bristles; the brush holder is simultaneously injection molded with a bump, and the limiting hole and the gear stroke chamber are left on the protrusion;步骤二，在上述刷毛托基础上二次注塑刷毛制成刷毛头一体结构件；Step two, the bristles are overmolded on the basis of the bristles, and the bristles are integrally formed;步骤三，将与电动传导轴连接的齿轮轴一端置于上述刷毛托凸块上的齿轮行程腔内，另一端与电动传导轴连接，使得刷毛头一体结构件在电机、电机动力轴及其电机配件的驱动下做旋转加旋转加往复运动。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. The rotation of the accessory is rotated and rotated to reciprocate.步骤四，取一销钉穿过上述限位孔将所述刷毛头一体结构件与刷头外壳两侧固定；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;步骤五，安装密封组件，使得刷头与电动机芯及其配件隔离；最后牙刷头与刷柄连接。In step five, the sealing assembly is installed such that the brush head is isolated from the motor core and its accessories; finally, the brush head is coupled to the handle.
- 根据权利要求7所述的一种电动牙刷的制造方法，其特征是所述的刷毛托凸块限位孔及齿轮行程腔的结构与齿轮轴的形状及运动行程相匹配构成。The method of manufacturing an electric toothbrush according to claim 7, wherein the structure of the bristle holder projection limiting hole and the gear stroke chamber is matched with the shape and the movement stroke of the gear shaft.
- 根据权利要求7所述的一种电动牙刷的制造方法，其特征是所述的刷毛头一体结构件是采用热塑性材质注塑制成。A method of manufacturing an electric toothbrush according to claim 7, wherein said bristle head unitary structural member is injection molded from a thermoplastic material.
- 根据权利要求7所述的一种电动牙刷的制造方法，其特征是所述的密封组件是采用硅胶一体成型制成。A method of manufacturing an electric toothbrush according to claim 7, wherein said sealing member is formed by integrally molding silicone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/076707 WO2019157654A1 (en) | 2018-02-13 | 2018-02-13 | Electric toothbrush and production method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/076707 WO2019157654A1 (en) | 2018-02-13 | 2018-02-13 | Electric toothbrush and production method therefor |
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| Publication Number | Publication Date |
|---|---|
| WO2019157654A1 true WO2019157654A1 (en) | 2019-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2018/076707 WO2019157654A1 (en) | 2018-02-13 | 2018-02-13 | Electric toothbrush and production method therefor |
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| WO (1) | WO2019157654A1 (en) |
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