WO2021012067A1

WO2021012067A1 - Soft-head toothbrush and forming method therefor

Info

Publication number: WO2021012067A1
Application number: PCT/CN2019/096651
Authority: WO
Inventors: 黄守仁
Original assignee: 龙昌兄弟股份有限公司
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2021-01-28

Abstract

The present invention provides a toothbrush, comprising a handle and a brush head. The brush head comprises a base, multiple cylinders, and a flexible base body. The base is formed by the integral extension of the handle, the thickness of the base is smaller than the thickness of the handle, the base and the flexible base body are engaged to each other and are respectively provided with multiple first and second through holes which are communicated, and the multiple cylinders are provided in the multiple first and second through holes in a penetrating manner. When the toothbrush of the present invention is provided for a user to brush teeth, because bristles of the multiple cylinders can shift towards different directions, tooth surfaces and toot gaps can be effectively cleaned. Therefore, the toothbrush has a good cleaning effect and an operation convenience for the user, and the flexible base body absorbs excessive force applied by the user, thereby avoiding damage to gums.

Description

Soft-head toothbrush and its forming method

Technical field

The invention relates to an improvement of a brush head capable of small amplitude deflection with tooth surface and a molding method thereof.

Background technique

The cleaning of the oral cavity is closely related to the health of the human body. People often use tools such as toothbrushes, mouthwashes and dental floss to clean the oral cavity. Among them, because of the convenience of the toothbrush, the basic tool for maintaining oral hygiene, the bristles of the toothbrush can conform to the teeth. Curvature is used to extend into the interdental area between the teeth to clean the residual food in the interdental space, and to avoid the growth of bacteria in the mouth due to food residues, so as to maintain oral hygiene and reduce the occurrence of oral diseases.

A general toothbrush includes a brush head and a brush handle connected to the brush head. The brush head and the brush handle provide the user with convenient operation in the oral cavity when brushing their teeth. Therefore, a thin rod is formed between the two. However, the brush head of the toothbrush in the prior art is still a block made of hard material, and rows of bristles are planted on one side of the block, so that when the user wants to clean the teeth in the oral cavity, The head of the toothbrush is placed in the oral cavity of the human body, and the teeth or interdental gaps are scrubbed and cleaned with protruding bundles of bristles.

However, since the bristles planted on the brush head and the brush head made of hard materials form a vertical angle, each bundle of bristles cannot be deflected arbitrarily, so that each bristles can only target the surface of the teeth or the teeth corresponding to the bristles. The tooth surface is cleaned at a certain angle; and the tooth surface is non-flat surface, and the brush head of the toothbrush is also rigid, limited by the bristles cannot fully fit the tooth surface of each tooth, so there will be dead corners of brushing, which is difficult to remove The tooth surface is clean, and it is impossible to clean the narrow gaps between the teeth or remote places. Therefore, users often brush their teeth with greater force to flex the bristles and fully fit the tooth surface. However, when the user makes the bristles penetrate into the gum area with greater force, the gums are often damaged. Damage to its health.

Summary of the invention

In view of this, the main purpose of the present invention is to provide an improvement of a brush head that can match the tooth surface for a small deflection.

The toothbrush of the present invention includes a handle and a brush head; wherein the brush head has a base, a plurality of cylinders, and a flexible base. The base is integrally extended by the handle, and the base has a thickness smaller than that of the handle. For the thickness of the handle, the base and the flexible seat are mutually joined and are respectively provided with a plurality of communicating first and second perforations, and the plurality of cylinders penetrate through the plurality of first and second perforations.

When the toothbrush of the present invention is used for users to brush their teeth, because the bristles of the plural barrels can be offset in different directions, the tooth surface and the interdental gaps can be effectively cleaned, and it has a better cleaning effect and is available for use. It is convenient for the user to operate, and the flexible seat absorbs the excessive force exerted by the user, thereby avoiding damage to the gums.

According to the above technical feature, the side of the plurality of second through holes of the flexible seat body away from the base is a closed end.

According to the above technical features, the upper half of each cylinder is located in the first perforation, and the lower half of each cylinder is located in the second perforation.

According to the above technical features, the upper half of the cylinder has a top surface, the top surface is exposed from the first perforation, one end of the lower half of the cylinder is a closed portion, and the closed portion is located at the second perforation. The closed end.

According to the above technical features, the sum of the thickness of the base and the thickness of the flexible seat is slightly larger than the height of the cylinder.

According to the above technical features, the thickness of the base is the same as the height of the first perforation, and the thickness of the flexible seat is greater than the height of the second perforation.

According to the above technical features, the thickness of the flexible seat body is smaller than the thickness of the grip.

According to the above technical features, the thickness of the base is between 0.3mm and 1.5mm, and the thickness of the flexible base can be between 3mm and 4mm.

The present invention further provides a method for forming a soft-head toothbrush, which includes at least the following steps: providing a grip, the end of the grip is integrally provided with a base, the thickness of the base is smaller than the thickness of the grip, and the base has a plurality of first perforations Provide a plurality of cylinders, the plurality of cylinders are arranged at intervals to form a brush head appearance, one end of the lower half of the plurality of cylinders is a closed part; the plurality of cylinders are positioned, and the plurality of cylinders are respectively placed in the plural first perforations Inside, the upper half of the plurality of cylinders is exposed to the plurality of first perforations; and a flexible seat is formed, and the flexible seat is formed on one side of the base by injection molding to cover the plurality of cylinders The lower half of the body, and fix the base and the plurality of cylinders to each other.

According to the above technical features, the brush head is flexible.

Description of the drawings

Figure 1 is a perspective view of the structure of the soft-head toothbrush of the present invention.

Figure 2 is an exploded view of the structure of the soft-head toothbrush of the present invention.

Figure 3 is a perspective view of the structure of the grip in the present invention.

Figure 4 shows a cross-sectional view of the structure of the soft-head toothbrush of the present invention.

Figure 5 is a schematic flow chart of the method for forming a soft-head toothbrush in the present invention.

Drawing number description:

Toothbrush 1

Grip 10

Grip 11

Grip

Brush head 20

Base 21

First surface 211

Second surface 212

First perforation 213

Cylinder 22

Top 221

Closed part 222

Flexible seat 23

Second perforation 231

Bristles 30

Detailed ways

Please refer to FIG. 1 which is a perspective view of the structure of the soft-head toothbrush of the present invention. The toothbrush 1 of the present invention includes a handle 10 and a brush head 20.

Please refer to FIG. 2 at the same time. The focus of this case is that the brush head 20 has a base 21, a plurality of cylinders 22, and a flexible base 23. The base 21 is integrally extended by the grip 10, as shown in the figure. In the embodiment, the grip 10 has a grip 11 and a neck 12 connected to the base 21. The neck 12 generally has a cross-sectional area that is at least narrower than the grip 11, and the base 21 The thickness of the base 21 is smaller than the thickness of the grip 10. Please refer to FIG. 3 at the same time. The base 21 has a first surface 211 and a second surface 212 opposite to each other. The thickness of the base 21 (measure the first and second surfaces of the base 2 The shortest distance between the surfaces 211, 212) is less than the maximum thickness of the grip 10 measured in the same direction (including the maximum thickness of the grip 11 and the neck 12 measured in the same direction); in this specific embodiment, the base 21 The thickness is about 10% of the thickness of the grip 10 measured in the same direction. In a variation of this embodiment, this number may be less than 40%, less than 30%, or less than 20%.

As shown in Figures 2 and 4, the base 21 and the flexible seat body 23 are joined to each other and are respectively provided with a plurality of first and

second perforations

213, 231 communicating with each other, wherein the plurality of the flexible seat body 23 The side of the second perforation 231 away from the base 21 is a closed end, and the plurality of cylinders 21 penetrate through the plurality of first and

second perforations

213, 231; in the embodiment shown in the figure, each cylinder The upper half of the body 22 is located in the first perforation 213, and the lower half of each cylinder 22 is located in the second perforation 231, and the upper half of the cylinder 22 has a top surface 221, the top surface 221 Exposed in the first perforation 213, one end surface of the lower half of the cylinder 22 is a closed portion 222, the closed portion 222 is located at the closed end of the second perforation 231, and can be planted from the top surface 221 exposed on the base 21 A bunch of bristles 30 are inserted and fixed in each barrel 22.

Wherein, the thickness of the base 21 is the same as the height of the first perforation 213, the thickness of the flexible seat body 23 is greater than the height of the second perforation 231; the thickness of the flexible seat body 23 is also smaller than that of the grip 10 thickness (including the maximum thickness of the grip and neck measured in the same direction), and the thickness of the flexible seat body 23 is greater than the thickness of the base 21, the thickness of the base 21 and the flexible seat The total thickness of the body 23 is slightly greater than the height of the cylinder 22; in this specific embodiment, the thickness of the base 21 may be between 0.3 mm and 1.5 mm, and the thickness of the flexible seat body 23 may be between 3 mm In the above specific embodiment, the flexible seat body 23 occupies at least 70% of the combined volume of the flexible seat body 23 and the base 21. In a variation of this specific embodiment, the flexible seat body 23 occupies at least 60% or at least 50% of the combined volume of the flexible seat body 23 and the base 21.

In the present invention, the handle 10, the base 21, and the plurality of barrels 22 are formed of a hard material, such as a plastic material; the flexible base 23 is formed of a soft material, so that the overall brush head can be Form a flexible state. Since the lower half of each barrel 22 where the bristles 30 are implanted is connected and fixedly covered by the flexible seat body 23, each barrel 22 where the bristles 30 are implanted can be deflected in various directions. In this way, when the user is brushing his teeth, the bundles of bristles 30 on the brush head can be deflected in any direction and remove food debris on the surface and crevices of the teeth, which can effectively clean the teeth while being flexible The sex seat 23 absorbs excessive force exerted by the user, thereby avoiding damage to the gums.

As shown in Figure 5, the soft-head toothbrush molding method of the present invention includes at least the following steps:

Step S01: Provide a grip. Please refer to FIG. 1 at the same time. The end of the grip 10 is integrally provided with a base 21, a holding portion 11, and a neck 12 connected to the base 21. The thickness of the base 21 is smaller than the The thickness of the grip 10, the base 21 has a plurality of first perforations 213; one of the manufacturing methods of the grip is made by injection molding, and the liquid plastic is injected into the first mold by injection molding technology. The corresponding mold in the shape of the grip 10 shown in FIG. 1 is formed as shown in the figure after the liquid plastic is cooled and solidified. The material of the grip 10 can be a hard material, such as a plastic material.

Step S02: Provide a plurality of cylinders 22, the plurality of cylinders 22 are arranged at intervals to form a brush head appearance, the upper half of the plurality of cylinders 22 has a top surface 221, and the lower half of the plurality of cylinders 22 has an end surface It is the closed part 222; among them, a hair transplanter can be used to implant the bristles into the plurality of cylinders 22 to form a bristle part on the brush head 20, and then use heat to shape the bristles.

Step S03: Position the plurality of cylinders 22, respectively place the plurality of cylinders 22 in the plurality of first perforations 213, and the top surface 221 of the upper half of the plurality of cylinders 22 is exposed from the plurality of first perforations 213.

Step S04: A flexible seat is formed, and liquid plastic is injected into a second mold by injection molding. The second mold is a mold corresponding to the shape of the flexible seat 23 shown in FIG. The liquid plastic is cooled and solidified to form a flexible seat body 23 as shown in the figure. The flexible seat body 23 is formed of a soft material, and the flexible seat body 23 covers the plurality of cylinders. The lower half of 22 and the base 21 and the plurality of cylinders 22 are fixed to each other.

In the present invention, because each barrel 22 with bristles 30 is covered with a flexible seat 23, each barrel 22 can form a multi-angle deflection, so that when the user brushes his teeth, the brush head Each bundle of bristles 30 can be deflected in any direction, and can remove food debris on the surface and crevices of the teeth, which can effectively clean the teeth. At the same time, the flexible seat body 23 absorbs excessive force applied by the user. This prevents damage to the gums.

Claims

A soft-headed toothbrush, which comprises a handle and a brush head, characterized in that:

The brush head has a base, a plurality of cylinders, and a flexible base, the base is integrally extended by the handle, the thickness of the base is smaller than the thickness of the handle, the base and the flexible base are joined to each other and A plurality of communicating first and second perforations are respectively provided, and the plurality of cylinders are penetrated in the plurality of first and second perforations.
3. The soft-head toothbrush according to claim 1, wherein the side of the flexible base with the plurality of second perforations away from the base is a closed end.
3. The soft-head toothbrush according to claim 2, wherein the upper half of each barrel is located in the first perforation, and the lower half of each barrel is located in the second perforation.
The soft-head toothbrush according to claim 3, wherein the upper half of the barrel has a top surface, the top surface is exposed from the first perforation, and one end of the lower half of the barrel is a closed portion, the closed The part is located at the closed end of the second through hole.
The soft-head toothbrush according to any one of claims 1 to 4, wherein the sum of the thickness of the base and the thickness of the flexible base is greater than the height of the barrel.
5. The soft-head toothbrush of claim 5, wherein the thickness of the base is the same as the height of the first perforation, and the thickness of the flexible seat is greater than the height of the second perforation.
The soft-head toothbrush according to any one of claims 1 to 4, wherein the thickness of the flexible base is smaller than the thickness of the grip, and the thickness of the flexible base is greater than the thickness of the base.
The soft-head toothbrush according to any one of claims 1 to 4, wherein the thickness of the base is between 0.3mm and 1.5mm, and the thickness of the flexible base is between 3mm and 4mm.
A method for forming a soft-head toothbrush is characterized in that it comprises at least the following steps:

A grip is provided, the end of the grip is integrally provided with a base, the thickness of the base is smaller than the thickness of the grip, and the base has a plurality of first perforations;

Provide a plurality of cylinders, the plurality of cylinders are arranged at intervals to form a brush head appearance, and one end of the lower half of the plurality of cylinders is a closed part;

Position the plural cylinders, respectively place the plural cylinders in the plural first perforations, and the upper half of the plural cylinders are exposed in the plural first perforations; and

A flexible seat is formed, and the flexible seat is formed on one side of the base by injection molding to cover the lower half of the plurality of cylinders, and fix the base and the plurality of cylinders to each other.
The soft-headed toothbrush according to any one of claims 1 to 4, or the molding method according to claim 9, wherein the brush head is flexible.