WO2021012072A1

WO2021012072A1 - Toothbrush having improved grip handle structure

Info

Publication number: WO2021012072A1
Application number: PCT/CN2019/096659
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

A toothbrush provided by the present invention comprises a grip handle and a toothbrush head. The grip handle and the toothbrush head are connected by means of a twistable portion; the twistable portion is provided with at least one connection piece; the connection piece has a thickness smaller than that of the grip handle; the angle of the toothbrush head can be changed along with the pressure applied by a user; when the brushing force exceeds a preset force value, the twistable portion is elastically deformed to bend or turn the toothbrush head; when force exceeding a default value is removed, the twistable portion can restore its original state by means of its own elastic force and return the toothbrush head to its original position. Therefore, the use of the twistable portion can absorb some of the brushing force, thereby reducing the brushing force applied on the tooth surfaces and gums, and reducing the damage to the teeth and gums.

Description

Improved toothbrush grip structure

Technical field

The invention relates to a toothbrush grip structure improvement which can change the angle of the brush head as the user applies pressure.

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.

In order to maintain oral health, brush hard and vigorously every morning and evening, hoping to brush the teeth as cleanly as possible, and it is best to prevent tooth decay from coming to the door. However, everything is too much too much. The research report pointed out that if the force of brushing is too large, it may cause damage to the tooth surface and gums, which may increase the risk of tooth decay and periodontal disease. Generally, a conventional toothbrush has a handle and a brush head integrally made, and the angle between the handle and the brush head is a fixed value; when the brush head exerts pressure on the user’s teeth, or the pressure applied exceeds a preset force value At the same time, the angle between the grip and the brush head is still at a fixed angle. As a result, excessive force will cause damage to the teeth and gums, and allow users to target specific dirty parts (such as Residues stuck in the teeth) strengthen cleaning, the toothbrush cannot meet the user's need to use greater force for cleaning, and the excessive force causes the brush head to press the bristles on the teeth or gums, which will shorten the service life of the bristles .

Summary of the invention

In view of this, the main purpose of the present invention is to provide an improved toothbrush grip that can change the angular position of the brush head as the user applies pressure.

The toothbrush of the present invention includes a handle and a brush head; wherein, the handle and the brush head are connected by a twistable portion, the twistable portion has at least one connecting piece, and the thickness of the connecting piece is smaller than that of the handle The thickness of the brush head can be changed with the pressure applied by the user. When the brushing force exceeds a preset value, the twistable part produces elastic deformation to make the brush head bend or rotate; when the force exceeding the default value is removed, it can be twisted The part restores its original shape through its own elastic force and returns the brush head to its original position; therefore, the twistable part is used to absorb part of the brushing force, thereby reducing the brushing force on the tooth surface and gums, and reducing the impact on the teeth and gums. hurt.

According to the above technical features, the twistable portion has a connecting piece and an outer casing covering the connecting piece.

According to the above technical features, the connecting piece has a rod-shaped configuration.

According to the above technical features, the rod-shaped configuration is straight.

According to the above technical features, the rod-shaped configuration has at least one protruding rib.

According to the above technical feature, the outer casing has at least one opening opposite to the rib, so that part of the surface of the rib is exposed.

According to the above technical feature, the twistable portion has a plurality of connecting pieces.

According to the above technical features, the plurality of connecting pieces are covered with an outer casing.

According to the above technical features, the outer casing is made of flexible material.

Description of the drawings

Fig. 1 is a perspective view of the structure of the first embodiment of the toothbrush in the present invention.

Figure 2 is a perspective view of the partial structure of the first embodiment of the toothbrush of the present invention.

Figure 3 is a schematic structural view of the first embodiment of the toothbrush in the present invention.

Fig. 4 is a schematic structural view of the second embodiment of the toothbrush in the present invention.

Figure 5 shows a schematic diagram of the use of the toothbrush in the present invention.

Figure 6 shows another schematic diagram of the use of the toothbrush in the present invention.

Figure 7 is a perspective view of the third embodiment of the toothbrush in the present invention.

Fig. 8 is a perspective view of the structure of the connecting piece in the third embodiment of the toothbrush of the present invention.

Drawing number description:

Toothbrush 1

Grip 10

Brush head 20

Bristles 30

Twistable part 40

Connecting piece 41

Outer body 42

Opening 421

Convex rib 43

Detailed ways

Please refer to FIG. 1, which is a three-dimensional view of the toothbrush of the present invention. The toothbrush 1 of the present invention includes a handle 10 and a brush head 20. A plurality of bristles 30 are provided on one side of the brush head 20.

Please refer to FIGS. 2 and 3 at the same time. The key point of this case is that the handle 10 and the brush head 20 are connected by a twistable portion 40, and the twistable portion 40 has at least one connecting piece 41. The thickness of 41 is smaller than the thickness of the grip 10. In the first embodiment shown in the figure, the twistable portion 40 has four connecting pieces 41, and the thickness of each connecting piece 41 is smaller than the thickness of the grip 10 and each There is a space between the connecting pieces 41, and the handle 10, the brush head 20 and each connecting piece 41 are made of plastic material, and each connecting piece 41 may be further covered with an outer body 42 which is made of flexible material .

As shown in FIG. 3, when the toothbrush 1 is not in use, each connecting piece 41 is in a normal state without bending and deforming. When the user uses the toothbrush 1 to brush his teeth, the bristles 30 of the brush head 20 bear the force of pivoting the brush head 20 relative to the handle 10, and then the connecting pieces 41 bear a bending force. When the bending force is less than the critical force, each connecting piece 41 generates slight bending deformation. At the same time, the elastic force of each connecting piece 41 that is slightly bent and deformed to return to its original shape and the force driving the brush head 20 to pivot relative to the grip 10 reach a moment balance, so that the brush head 20 stops pivoting relative to the grip 10.

In addition, in the second embodiment shown in FIG. 4, the twistable portion 40 may also have a connecting piece 41 and an outer casing 42 covering the connecting piece 41, and the brush head 20 may also be relatively bent. Or the deformation of rotation.

As shown in FIG. 5, when the user brushes his teeth with a force that may cause damage to the tooth surface or gums, the bending force of the connecting piece 41 is greater than the critical force. At this time, the connecting piece 41 undergoes a relatively large bending deformation. At the same time, the elastic force of the connecting piece 41 that produces a relatively large bending deformation to return to its original state cannot achieve a moment balance with the force that drives the brush head 20 to pivot relative to the grip 10, so that the brush head 20 continues to pivot relative to the grip 10; The arrangement of the piece 41 allows the connecting piece 41 to drive the brush head 20 to pivot up and down relative to the handle 10; it can also drive the brush head 20 to pivot left and right relative to the handle 10, as shown in Fig. 6, even allowing the brush head 20 to be held relatively Turn 10 into a 360 degree rotation.

The present invention uses a twistable part to be connected between the handle and the brush head. The angle of the brush head can be changed with the pressure applied by the user. The twistable part absorbs part of the brushing force, thereby reducing the tooth surface and gums. Brushing power reduces the damage to teeth and gums, and can also extend the life of the toothbrush.

In the above embodiment, the connecting piece 41 has a rod-shaped configuration, and as shown in FIGS. 2 and 4, the rod-shaped configuration is flat; or as shown in FIGS. 7 and 8, the rod-shaped The configuration has at least one protruding rib 43, and the outer casing 42 has at least one opening 421 opposite to the rib 43, so that part of the surface of the rib 43 is exposed, as shown in the embodiment The rod-shaped configuration has four protruding ribs 43 and is slightly cross-shaped. In contrast, the outer casing 42 has four openings 421.

Claims

A toothbrush grip structure improvement. The toothbrush comprises a grip and a brush head. The toothbrush is characterized in that:

The handle and the brush head are connected by a twistable part, the twistable part has at least one connecting piece, and the thickness of the connecting piece is smaller than the thickness of the handle.
5. The toothbrush grip structure improvement of claim 1, wherein the twistable portion has a connecting piece and an outer body covering the connecting piece.
3. The improved toothbrush grip structure of claim 2, wherein the connecting piece has a rod-shaped configuration.
3. The improved toothbrush grip structure of claim 3, wherein the rod-shaped configuration is straight.
3. The improved toothbrush grip structure of claim 3, wherein the rod-shaped configuration has at least one protruding rib.
5. The toothbrush grip structure improvement of claim 5, wherein the outer casing has at least one opening opposite to the rib, so that part of the surface of the rib is exposed.
The improved toothbrush grip structure according to any one of claims 2 to 6, wherein the outer shell is made of flexible material.
3. The toothbrush grip structure improvement of claim 1, wherein the twistable portion has a plurality of connecting pieces, and a gap is provided between the plurality of connecting pieces.
8. The improved toothbrush grip structure of claim 8, wherein the plurality of connecting pieces are covered with an outer body.
9. The improved toothbrush grip structure of claim 9, wherein the outer shell is made of flexible material.