JPH06197811A - Toothbrush and electric toothbrush - Google Patents

Abstract

PURPOSE:To enable the residuary substances of food stuck to the teeth, and tartar on the teeth to be efficiently removed without injuring the gum at the time of tooth-brushing. CONSTITUTION:A toothbrush A1 is provided with a holder 1, to the end of which a crowned member 2 is fixed. The crowned member 2 is provided with a molar fitting part 21 formed approximately in a heart-shape in section, and a foretooth fitting part 22 formed approximately in a V-shape in section. The foretooth fitting part 22 is formed in a curved-surface shape in such a way that the breadth thereof is slightly narrowed on the central side in plan view. On the inner wall 21a of the molar fitting part 21, brush parts 3 are planted nearly all over the surface so as to make an angle of 30 deg. to 60 deg. to the tooth surface toward the tooth end of the molar tooth to be fitted. Further, on the inner wall 22a of the foretooth fitting part 22, brush parts 3a are planted nearly all over the surface so as to make an angle of 30 deg. to 60 deg. to the tooth surface toward the tooth end of the foretooth to be fitted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toothbrush and an electric toothbrush capable of efficiently removing dust, plaque, and tartar attached to teeth.

[0002]

2. Description of the Related Art Human teeth are important tissues indispensable for mastication and pronunciation of food, and in order to sufficiently perform their functions, it is necessary to prevent periodontal diseases from occurring before meals or before going to bed. It is necessary to brush the teeth to prevent plaque and tartar from depositing on the neck and the like. Conventionally, a toothbrush in which a brush portion is planted at the end of a grip handle has been used as an instrument for brushing teeth, but in recent years, a so-called electric toothbrush has been developed and is also widely used. Although this toothbrush and the electric toothbrush have a difference between manual operation and automatic operation, generally, the toothbrush and the electric toothbrush are used by repeatedly swinging the brush portion in the axial direction.

[0003]

However, the above-mentioned conventional toothbrush or electric toothbrush has the following problems. That is, when the handle portion is swung in the axial direction during use, the brush portion is alternately swung in the upward and downward directions. That is, for example, in the case of an electric toothbrush,
When the user holds the gripping cylinder and brings the brush portion into contact with the tooth flank and the neck of the tooth and swings the brush portion in the axial direction, the brush portion is rotated and swung downward, and the gingiva is rotated. The tip of the tooth is peeled from the cervical portion, and the scum adhered to the tooth is pushed by the brush into the gingival groove between the gingiva and the cervical portion. Now, by brushing your teeth,
On the contrary, plaque and tartar will be deposited, which may cause periodontal diseases such as alveolar pyorrhea.

[0004]

Means for Solving the Problems The means of the present invention taken to solve the above problems are as follows. In the first invention, a crown member provided with a grip handle and a molar insertion portion and an anterior tooth insertion portion which are provided at a front portion of the grip handle and have an inner wall portion corresponding to a tooth surface, The crowned member is planted in the inner wall portions of the posterior tooth fitting portion and the anterior tooth fitting portion so as to form an angle of 30 ° to 60 ° with respect to the tooth tips of the fitted molar teeth and the anterior teeth. A toothbrush including a brush portion. According to the second aspect of the invention, the gripping base body and the electric drive means provided on the gripping base body and built in the gripping base body repeatedly swing in the axial direction, the tooth axis direction, or the direction perpendicular to the tooth axis direction. And a crown member having a fitting portion for a molar tooth and a fitting portion for an anterior tooth, which are provided at a tip portion of the fitting portion and have an inner wall portion corresponding to a tooth surface, and a crowned member of the crowned member. In the inner wall portions of the molar insertion portion and the front tooth insertion portion, a brush portion that is implanted so as to form an angle of 30 ° to 60 ° with the tooth surface toward the tooth tips of the molar teeth and the front tooth to be inserted, It is an electric toothbrush including. A third aspect of the invention is the toothbrush or the electric toothbrush according to the first or second aspect of the present invention, in which only the molar insertion portion and the brush portion corresponding thereto are formed in the crowned member. A fourth invention is the toothbrush or the electric toothbrush according to the first or second invention, in which only the front tooth fitting portion and the brush portion corresponding thereto are formed on the crowned member.

The structure of the electric drive means is not particularly limited, and known means such as a combination of a motor and a cam mechanism may be used. It is desirable that the inclination angle of the brush portion is set to 45 ° with respect to the tooth surface of the posterior tooth or the front tooth fitted in each fitting portion, but it is not limited to that angle and may be in the range of 30 ° to 60 °. It is set appropriately. In addition,
If it is less than 30 ° or more than 60 °, the contact pressure on the tooth surface when the tip of the brush portion is swung becomes weak, and it is not possible to sufficiently scrape off the residue and the like. Further, the length of the brush portion is not particularly limited, and may be appropriately set, for example, the brush portion having the same length or the brush portion whose length is changed stepwise.

[0006]

When the toothbrush is used, first, the molars are inserted into the molar insertion portions, or the front teeth are inserted into the front tooth insertion portions.
Contact at an angle within the range of °. In this state, in a manually operated toothbrush, the grip handle is repeatedly oscillated in the axial direction, the tooth axis direction, or the direction perpendicular to the tooth axis direction by manual operation. Further, in the electric toothbrush, the gripping handle is repeatedly oscillated in the axial direction, the tooth axis direction, or the direction perpendicular to the tooth axis direction by the electric drive means. At this time, although the brush part repeatedly oscillates, since the planting direction is inclined with respect to the tooth surface, the sliding force is strong in the movement toward the tooth tip side, and the brush is moved toward the opposite side. The sliding force is weak. As a result, the bite, dental plaque, and tartar attached to the occlusal part, the tooth side part, and the cervical part of the tooth are naturally slid to the central part of each fitting part. Further, for the same reason, the gingival portion is not peeled off from the cervical portion, and the shavings, plaque, etc. attached to the cervical portion are removed without being pushed into the peeled portion.

[0007]

The present invention will be described in more detail based on the embodiments shown in the drawings. FIG. 1 is a perspective view showing an embodiment of a toothbrush according to the present invention, FIG. 2 is an explanatory view showing a structure of a brush portion and a contact state with a tooth surface, and FIG. 3 is an enlarged explanatory view of a tip portion of the brush portion. is there. Reference numeral A1 is a toothbrush, which is used by manual operation. The toothbrush A1 includes a grip handle 1 and a crown member 2
Is equipped with. The grip 1 is a plastic rod,
The crowned member 2 is fixed to its tip.

The crown member 2 is made of plastic and has a cross-sectional shape that is substantially heart-shaped.
1 and a front tooth fitting portion 22 having a substantially V-shaped cross section
Is equipped with. The front tooth fitting portion 22 is formed into a curved surface so that the central portion side is slightly narrowed in plan view. Further, the outer shape of the crowned member 2 is rounded so as not to damage the mouth during use. In the inner wall portion 21a of the molar insertion portion 21, the brush portion 3 is planted almost all over the tooth surface of the molar tooth to be fitted so as to form an angle of approximately 45 °. Further, in the inner wall portion 22a of the front tooth fitting portion 22, a brush portion 3a is planted almost all over the tooth surface of the front tooth to be fitted so as to form an angle of approximately 45 ° with the tooth surface.

Referring to FIG. In this embodiment, the tip end side of the brush fibers 30 of the brush portions 3 and 3a is the crowned member 2.
Is bent toward the bent portion side, and the tip portion is formed into a round shape. As a result, the gums are not damaged during brushing, and it is sufficiently effective to remove the dust and the like adhering to the teeth.

The method of use and the operation of this embodiment will be described with reference to FIGS. First, the molar insertion portion 21 is fitted into the molar T1, the brush portion 3 forms an angle of about 45 ° with the tooth surface of the molar T1, and the gripping handle 1 is manually operated in the axial direction, the tooth axis direction, or the tooth axis direction. Repeatedly rock in the direction perpendicular to and brushing. At this time, the brush portion 3 is repeatedly oscillated, but since the brush portion 3 is inclined with respect to the tooth surface, the sliding force is strong in the movement toward the tooth tip side, and the brush portion 3 moves toward the opposite side. The sliding force is weak. As a result, the bite, dental plaque, and tartar attached to the occlusal portion, the tooth side portion, and the cervical portion of the molar T1 are naturally attracted to the central portion of the molar insertion portion 21. Further, for the same reason, the gingival part does not separate from the cervical part even if it is rubbed by the brush part 3, and the dregs and plaque attached to the cervical part are pushed between the gingival part and the gingival part. It is removed without being removed. After the brushing of the molar T1 is completed, the front tooth insertion portion 22 is then fitted into the front tooth T2, and brushing is performed in the same manner as the molar T1. And is removed without being pressed between the tooth part and the gingiva part.

FIG. 4 is a perspective view showing an embodiment of the electric toothbrush according to the present invention. The electric toothbrush A2 includes a grip base body 5. A handle portion 1 a is provided at the tip of the grip base body 5. The handle 1a is driven by a motor 51, which is an electric drive means built in the grip base 5, and repeatedly swings in the axial direction (arrow a) and the tooth axis direction (arrow b) via the conversion mechanism 53. It has a structure that A publicly known means is used for the structure of the conversion mechanism portion 53, and a detailed description thereof will be omitted. In the present embodiment, the movement of the handle 1a can be switched between the axial direction, the tooth axis direction, and the direction perpendicular to the tooth axis direction by a changeover switch (not shown). Reference numeral 52 is a battery, and 54 is a switch. The crowned member 2 fixed to the tip of the handle 1a
Since the structure of the brush portions 3 and 3a is similar to that of the toothbrush A1, detailed description thereof will be omitted. Further, in the drawings, the same or equivalent portions as those of the toothbrush A1 are designated by the same reference numerals. The method of use and the operation are almost the same as the toothbrush A1 except that the brush parts 3, 3a of the crowned member 2 are repeatedly oscillated electrically and are more efficient.

5 and 6 are front views showing another structure of the crown member. The crowned member 2a of FIG.
Also, it is a structure in which only the brush portion 3 is provided, and is dedicated to the brushing of the molars. The crowned member 2b of FIG. 6 has a structure in which only the front tooth fitting portion 22 and the brush portion 3a are provided,
For brushing front teeth only. 5 and 6, the same or equivalent portions as the above-mentioned crowned member 2 are designated by the same reference numerals. Further, the operation is almost the same as that of the above embodiment, but the structure of the crowned members 2a, 2b is simpler and can be made smaller so that it can be easily moved in the mouth.

[0013]

The present invention having the above-mentioned structure has the following effects. (A) The brush portion is provided on the inner wall portions of the molar insertion portion and the front tooth insertion portion, inclining toward the tooth tip of each tooth to be inserted so as to form an angle of 30 ° to 60 ° with the tooth surface. is there. Therefore, when each fitting portion is fitted into each tooth, the tip of the brush portion is brought into contact with the tooth surface, and the brush portion is repeatedly rocked, the sliding force of the brush portion is strong in the movement toward the tooth tip side. , The sliding force is weak toward the other side. As a result, the bite, dental plaque, and tartar that have adhered to the occlusal part, the tooth side part, and the cervical part of the tooth are naturally slid to the central part of each fitting part by the brush part, and are efficiently removed. . (B) As described above, when the brush portion is repeatedly oscillated, the sliding force of the brush portion is strong in the movement toward the tooth tip side, and the sliding force is weak toward the opposite side. Therefore, even if the cervical part is brushed, the gingival part is not peeled off, and the scalp and plaque etc. adhering to the cervical part are pushed between the gingival part and the gingival part as in the conventional case. There is no worry of causing. (C) According to the electric toothbrush, the brush portion can be repeatedly oscillated at high speed as compared with the case where the toothbrush is manually operated.
You can brush more efficiently. (D) In the case where the crowned member is provided with only one of the molar insertion portion and the front tooth insertion portion and the corresponding brush portion, the structure becomes simpler and can be made smaller, so Easy to move with.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a toothbrush according to the present invention.

FIG. 2 is an explanatory view showing a structure of a brush portion and a contact state with a tooth surface.

FIG. 3 is an enlarged explanatory view of a tip portion of a brush portion.

FIG. 4 is an exploded perspective view showing an embodiment of the electric toothbrush according to the present invention.

FIG. 5 is a front view showing another structure of the crowned member.

FIG. 6 is a front view showing another structure of the crowned member.

[Explanation of symbols]

 A1 toothbrush 1 gripping handle 2, 2a, 2b crowned member 21 molar insertion part 22 front tooth fitting part 21a, 22a inner wall part 3, 3a brush part A2 electric toothbrush 1a handle part 5 gripping base 51 motor

Claims (4)

[Claims] 1. A crown member having a grip handle and a molar tooth insertion portion and an anterior tooth insertion portion which are provided at a tip portion of the grip handle and have an inner wall portion corresponding to a tooth surface, and the molar tooth insertion member. The inner wall portion of the insertion portion for the front portion and the front tooth,
30 ° with the tooth surface toward the tips of the posterior and anterior teeth to be inserted
A toothbrush which is implanted so as to form an angle of 60 ° with the toothbrush. 2. A gripping base body, and an electric drive means provided on the gripping base body and built in the gripping base body so as to repeatedly swing in a circumferential direction, a tooth axis direction, or a direction perpendicular to the tooth axis direction. A crown member provided with a shank portion and a molar tooth insertion portion having an inner wall portion corresponding to the tooth surface and an anterior tooth insertion portion, and the crown member of the crowned member. And a brush part implanted in the inner wall part of the fitting part for anterior teeth so as to form an angle of 30 ° to 60 ° with the tooth surface toward the tips of the posterior teeth and the anterior teeth to be fitted, toothbrush. 3. The toothbrush or the electric toothbrush according to claim 1, wherein only the molar insertion portion and the brush portion corresponding thereto are formed on the crowned member. 4. The toothbrush or the electric toothbrush according to claim 1, wherein only the front tooth fitting portion and the brush portion corresponding thereto are formed on the crowned member.