JP5252330B2 - Toothbrushing method and toothbrush used therefor - Google Patents

Description

In the present invention, the dirt between the teeth is removed by the “wedge effect” by brushing in the left-right direction, and further, no great force is applied to the gums during brushing, and the burden of torsional force is applied from the grip body during brushing. The present invention relates to a tooth brushing method and a toothbrush used therefor, in which the user can brush his / her teeth without receiving it, and further, the lateral protrusion of the brush bundle can be suppressed and the brush can be brushed without being bulky in the lateral direction.

Conventionally, the brush bundle of the toothbrush is linearly provided from the grip body of the toothbrush, so that the remaining food fine particles between the teeth and the attached dirt are not removed only by brushing in the left-right direction. Therefore, the force from the grip body is transmitted as it is, and a large force is applied to the gingiva during brushing, which may damage the gingiva.
Toothbrushes in which a conventional brush bundle is gripped and inclined in the left-right direction from the main body are disclosed in Japanese Patent Application Laid-Open No. 2005-66268, Japanese Patent Application Laid-Open No. 11-137340, Japanese Patent Application Laid-Open No. 7-213339, Japanese Utility Model Publication No. 5-55922, Japanese Patent Application Laid-Open No. 2009-39495, and Japanese Patent Application Laid-Open No. 2004-113751. It is known and Japanese Patent Application Laid-Open No. 2012-428 is a prior application.
Further, toothbrushes in which the brush bundle is gripped and inclined in the front-rear direction from the main body are known in Japanese Utility Model Laid-Open No. 5-95327 and Japanese Utility Model Laid-Open No. 63-13025.
JP-A-2005-66268, JP-A-11-137340, JP-A-7-213339, JP-A-5-55922, JP-A-2009-39495, JP-A-2004-113751, JP-A-2012-428, JP-A-5-95327, Each of Kaisho 63-13025 will be described.
First, Japanese Patent Application Laid-Open No. 2005-66268 only discloses that the brush bundle is inclined in the lateral direction, and the inclined brush bundle is used along with the teeth or the tooth arrangement during brushing. Neither is it disclosed at all.
That is, for the toothbrush of FIG. 4 of the publication, the tooth brushing method of “brushing the brush bundle in the left-right direction while being inclined with respect to the tooth arrangement” is not explicitly disclosed in the specification.
First of all, brushing the brush bundle against the teeth is brushing your teeth, but if you don't polish it with your finger on the brush bundle, if you move the brush bundle to the left and right and move it left and right, the brush bundle will tilt more if you press it. If it is dragged, there will be no inclination and it will be straight with the grip body , so it is impossible to brush your teeth if you have only the grip body .
That is, if the toothbrushing is performed in an inclined state, a rotational force acts on the brush bundle, and the inclination cannot be maintained unless the brush bundle is polished with a finger attached to the brush bundle.
Since the inclination of the toothbrush bundle is extremely small (Applicant manufactured the toothbrush of FIG. 4 and confirmed that the inclination holding force is “small force” by experiment), the inclination disappears and becomes a straight line. If the bundle is tilted and applied to the teeth and moved in the left-right direction, the brush bundle will tilt more if it is pressed, and if it is pulled, there will be no inclination and the grip will be straight.
Therefore, under the condition that only the grip body is brushed, the brush bundle is placed along the teeth while the grip body is a tooth brushing method in an inclined state. Therefore, the method of using the toothbrush in FIG. Is a natural interpretation.
If the user wishes to brush the toothbrush by inclining the gazette from this natural interpretation and inclining the brush bundle against the tooth arrangement, the user not only holds the grip body but also attaches a finger to the brush bundle. If you don't brush your teeth, you can't brush your teeth.
In [0006] of the publication, there is a description that “attach an index finger or thumb” in order to maintain the inclination of the brush head (1) in FIG. 3, and there is no explanation for the toothbrush in FIG. In order to maintain the inclination, it is necessary to attach a finger, and it is very difficult and unpractical to brush right and left quickly while holding the inclination of the brush bundle with the finger.
That is, using a bunch of loosely inclined brushes with an inclination of 40 ° or less, brushing at a normal high speed (hereinafter, “fast” means “normally fast”) and brushing between teeth, etc. This is different from the function of the present invention that achieves the effect of scraping off the film, hereinafter referred to as the “wedge effect”.
Referring to FIG. 4 of the publication, the inclination of the brush head is 45 ° or more (close to 45 ° but larger than that), and left and right food brushing and adhering fine food particles between the teeth are attached. It is not less than 40 ° (that is, less than an angle necessary for exhibiting the “wedge effect”) in the present invention, which is an inclination necessary for scraping off dirt.
If the brush bundle has a gentle inclination of 40 ° or less, the tooth-to-tooth gap alternately repeats the moment of contact with the brush bundle and the non-contact instant by brushing in the left-right direction, and inclines with a gentle inclination of 40 ° or less. “Wedge effect” (If the user polishes with a force of 1 in the horizontal direction, the ratio of the horizontal direction to the vertical direction is about 1: 1.19 (vertical direction when the angle is 40 °) The force of about 19% increases the force of removing dirt between teeth, and when it is set to 35 °, the ratio of horizontal to vertical is about 1: 1. 43 (the vertical force increases by about 43%), the “wedge effect” that the force of removing dirt between teeth acts, and if it is 30 °, it is about 1: 1.73 (about 73% increase) ) For comparison, if the angle is 45 ° close to the official gazette, it is 1: 1, so there is no force amplification and “wedge Fruit "by the effect of the no) (vertical force if loose angle of 40 ° or less in other words is now greatly amplified) because scraping is achieved.

The toothbrush of Japanese Patent Laid-Open No. 11-137340 is not fixed at the time of brushing about 45 ° to the left and right of the brush bundle. Therefore, a brushing method for brushing left and right in a state where the toothbrush is gently inclined to 40 ° or less is assumed. The same is not true.
Also, as the technical problem is described, “This invention is shaped and used in accordance with the needs of the user, so that the disabled and injured, as well as healthy people, can use their teeth and gums in the same way. It is a toothbrush that has a grip body for the disabled or injured, and has a tilted body, and has no relation to the disabled or injured person like the present invention. The dynamic `` wedge effect '' has the effect of scraping fine food particles and attached dirt in all areas of the gap between teeth and teeth and gums even with toothbrushing at the same time as a conventional toothbrush. ''It's not that.
Japanese Patent Application Laid-Open No. 7-213339 discloses a toothbrush that has a tip portion that is gripped and integrally tilted from the main body, and a right and left inclination of the brush bundle is fixed. The inclination is 70 ° to 80 °. Left and right brushing, the inclination required to scrape off the remaining fine food particles and adhering dirt between the teeth is 40 ° or less (ie, below the angle necessary to exhibit the “wedge effect”) However, since it is shown and described in the specification that the brush bundle is used along the teeth, it is clear that no brushing is assumed.
Japanese Utility Model Laid-Open No. 5-55922 discloses a toothbrush having a brush tip bent and inclined. However, as described in "the tooth arrangement and the brush line are parallel", the brush bundle is inclined with respect to the tooth arrangement and brushed. This is different from the tooth brushing method of the present invention.
Furthermore, as shown in FIGS. 4, 5, and 6, the present invention indicates that “if the narrow cross section of the grip body is extended in the tip direction with the same cross section, the extended cross section is projected from the front of the brush bundle. The brush bundle is arranged so as to be prevented from projecting in the lateral direction so as to intersect with the end of the ”.
That is, the shorter side to the narrow cross section of the grip body and the laterally protruding end of the brush bundle is the length K and the longer one is the length H, but the extension of the cross section and the end of the projection from the front of the brush bundle are Crosses.
This results in the following two effects:
(1) The protrusion of the brush bundle in the lateral direction is suppressed, and tooth brushing is possible without being bulky in the lateral direction in the mouth.
This is because FIG. 8 of the present invention is an explanatory view of FIG. 1 of the publication, but the lateral protrusion of the brush bundle does not intersect with the present invention (FIG. 6) as shown in FIG. It is.
(2) The user can brush his / her teeth without receiving a torsional load from the gripping body during brushing.
This is because, when comparing FIG. 8 (the explanatory diagram of FIG. 1 of the publication) with FIG. 7 of the present invention, the brush bundle receives force when brushing the brush bundle against the teeth in the first place, as shown in FIG. In the present invention, a force acts on the left brush of the extension of the connecting portion of the grip body with a thin cross section, and a force also acts on the right brush, so the rotational moment due to these forces is as long as the entire surface of the brush bundle hits the teeth. This is because it is offset to zero.
In the present invention having the above-mentioned effect, the brush is so arranged that if the narrow cross section of the grip body is extended in the tip direction with the same cross section, the extended cross section intersects the end of the projection from the front of the brush bundle. The configuration in which the bundle is arranged with restrained lateral protrusion is not disclosed in the publication.

JP-A-2009-39495 and JP-A-2004-113751 differ from the toothbrushing method of the present invention in which the brush bundle is inclined with respect to the tooth arrangement and brushed in the same manner as in Japanese Utility Model Laid-Open No. 5-55922 .
Further, as in the case of Japanese Utility Model Laid-Open No. 5-55922, it is assumed that the narrow cross section of the grip body is extended in the tip direction while maintaining the same cross section, and the extended cross section is at the projection end from the front of the brush bundle. The configuration of “the brush bundles are arranged so as to be prevented from protruding in the lateral direction so as to intersect” is not disclosed at all and is different.
Japanese Patent Application Laid-Open No. 2012-428 is a prior application, but the publication does not disclose the configuration of “the brush bundle whose length is more than twice the bundle width” of the present invention. There is no second reason for refusal.
The configuration of the present invention makes the length of the brush bundle more than twice the width of the bundle, so that it is sufficient to brush the contact width in the vertical direction with the tooth only by moving the inclined brush bundle in the horizontal direction. This is an essential configuration for practical use of the tooth brushing method of the present invention.
Next , the toothbrushes of Japanese Utility Model Laid-Open Nos. 5-95327 and 63-13025 are those in which the brush bundle is gripped and inclined in the front-rear direction from the main body, and the front-rear inclination of the brush bundle is fixed during brushing. It is natural to fix it in the case of a slanted surface, because it is impossible to maintain the slanting in the front-rear direction unless it is fixed because the force in the front-rear direction is applied to the brush bundle during brushing. Because there is.
On the other hand, as long as the condition that the brush bundle is a toothbrush that is inclined in the left-right direction from the grip body and "brushes the toothbrush with only the grip body", all the conventional ones are arranged along the teeth as described above. This is based on the premise that it is used, because functionally (JP 2005-66268, JP 11-137340 B, the right and left inclination of the brush bundle is not fixed at the time of brushing. If it is not functionally usable) or explicitly (Japanese Patent Laid-Open No. 7-213339, Japanese Utility Model Laid-Open No. 5-55922, Japanese Patent Laid-Open No. 2009-39495, Japanese Patent Laid-Open No. 2004-113751, and Japanese Patent Laid-Open No. 2012-428 Because it is clear that it will be used along.)

Problems to be solved by the invention

The present invention solves the above-described conventional problems, and the left and right direction brushing removes fine food particles and adhered dirt between the teeth due to the “wedge effect”. The user can brush their teeth without applying a torsional force from the gripping body when brushing, and the brush bundle can be brushed laterally without being bulky in the mouth. An object is to provide a tooth brushing method and a toothbrush used therefor.

Means for solving the problem

In order to achieve the above-mentioned object, the present invention grips a brush bundle whose length is twice or more the bundle width to be not less than ½ (half) of the bundle width and not more than 40 °, and inclines laterally from the main body. The connecting portion of the grip body that is not inclined to the distal end portion has a narrower cross section than the base portion of the grip body, and the thin cross section of the grip body remains in the same cross section in the distal direction. If the brush bundle is assumed to be extended, the brush bundle is arranged with lateral protrusion restrained so that the extended cross section intersects the projection end from the front of the brush bundle, and the right and left inclination of the brush bundle is fixed when brushing A toothbrushing method is proposed in which a brush bundle is held in a horizontal direction by a toothbrush and is gripped in the left-right direction and held only by the main body.

Hereinafter, the toothbrushing method of the present invention and the toothbrush used therefor will be described with reference to embodiments shown in the drawings.
1 and 2 show a toothbrushing method of the present invention and a toothbrush used therefor, the toothbrush having a grip body (1) and having a tip (2) inclined laterally from the tip of the grip body (1). A brush bundle (21) is provided.
The brush bundle (21) is a conventional nylon resin, animal hair, or similar brush material, and is fixed to the tip (2) in a bundle shape with a bundle width w and length a as shown in FIG. 4 or FIG. It is a thing.
As shown in FIG. 4 or FIG. 5, the brush bundle (21) has a laterally inclined length y (grip body (1) of not less than 1/2 (half) of the bundle width w and not more than 40 ° (preferably not more than 35 °). ) To the tip (2) inclined in the lateral direction from the tip of the grip body (1).
In addition, the connecting portion of the grip body (1) that is not inclined with respect to the distal end portion (2) has a narrower cross section than the base portion of the grip body (1).
Assuming that the narrow cross section of the grip body (1) is extended in the tip direction with the same cross section as shown in FIG. 4, the extended cross section intersects the projection end from the front of the brush bundle (21). In the same manner, the brush bundle (21) is arranged with suppressed lateral protrusion.

That is, the shorter one of the narrow cross section and the end of the brush bundle (21) extending in the lateral direction is the length K, the longer one is the length H, and the section between H and K is a cross section. If it is extended, it can be seen that the ends of the projection from the front of the brush bundle (21) intersect (further, since FIG. 4 is a front view, the brush bundle (21) in FIG. It is shown that the extension of the narrow cross-section intersects and clearly divides the set of brushes on both sides rather than touching them).
Here, if an explanation is added to clarify the meaning of “extension”, in FIG. 4, the non-inclined connection portion (thin cross section) of the grip body (1) to the tip end portion (2) is a straight line. If the connecting portion is tapered as shown in FIG. 8 (different from the brush bundle of the embodiment of FIGS. 1 to 4) (this invention is not shown in the embodiment but includes that the connecting portion is tapered) ), It is only necessary to extend the cross section immediately before the inclination of the connection portion in a state where the connection portion is not inclined because the connection portion is inclined until the inclination (inclination of the tip portion) starts.
The brush bundle (21) may be provided from a position laterally separated from the center line of the grip body (1) as shown in the figure, or may be provided without being separated from the center line.
The shape of the brush bundle (21) may be linear as shown in FIG. 4 or curved as shown in FIG.
Furthermore, although the longitudinal direction edge part of the brush bundle (21) is rounded in FIG.4 and FIG.5, a straight edge part (not shown) may be sufficient.

The method of using the above-described toothbrushing method of the present invention and the toothbrush of the embodiment will be described below.
That is, as shown in FIG. 1, the user brushes the toothbrush with only the grip body (1) of the toothbrush, but since the brush bundle (21) is inclined in the horizontal direction, the user brushes in the horizontal direction. Since the tip part is a tilted product that is integrally tilted from the main body, the tilt is fixed when brushing, and the brush contacts diagonally between the teeth, so the remaining fine food particles and attached dirt It will receive the force from the brush in the vertical direction, and the left and right brushing is the same as brushing in the vertical direction (the effect of scraping off diagonally is added, so it is simply brushed in the vertical direction) There is an effect that fine particles and attached dirt are scraped off.
This is because if the brush bundle (21) is inclined with a laterally inclined length y of at least 1/2 (half) of the bundle width w and not more than 40 °, the tooth-to-tooth gap is caused by lateral brushing. The moment of contact with the brush bundle and the non-contact moment are repeated alternately, and the contact is made obliquely at an angle of 40 ° or less. “Wedge effect” (If the user polishes with a force of 1 in the lateral direction, When the angle is 40 °, the ratio of the horizontal direction to the vertical direction is about 1: 1.19 (the vertical force increases by about 19%). Effect ”, and when the angle is 35 °, the ratio of the horizontal direction to the vertical direction is about 1: 1.43 (the vertical force increases by about 43%), and the force to remove the dirt between the teeth acts. "Wedge effect", and if it is 30 °, it is about 1: 1.73 (about 73% increase). If the angle is 45 ° which is close to the official gazette, the force is not amplified and there is no “wedge effect” (in other words, if the angle is less than 40 °, the force in the vertical direction increases and is amplified). This is because scraping is achieved.

Also, as shown in FIGS. 4 and 5, the brush bundle (21) has a laterally inclined length y (in a direction perpendicular to the grip body (1)) of ½ (half) or more and 40 ° or less of the bundle width w. The brush bundle (21) has a slanted length) and is provided at the tip (2), so if it is a conventional one, it is in the range of the bundle width w of the brush bundle (21). In the present invention, if the brush body (21) is moved back and forth in the lateral direction with the intention of brushing the teeth without brushing the grip body (1) further above or below, the horizontally inclined brush bundle (21) is naturally rooted. It will also come into contact with (the boundary between teeth and gums).
As a result, the root of the teeth (the boundary between the teeth and gums) is reliably brushed and the dirt is removed.
Regarding contact with the root of the teeth, it is desirable that the laterally inclined length y is not less than the bundle width w (not 1/2).
As a next effect, since the brush bundle (21) is inclined in the lateral direction from the grip body (1) and is not linear, the force from the grip body (1) is not transmitted as it is, and the brush bundle (21) is in the lateral direction. Since it protrudes, it is also contacted in the lateral direction at the same time, and the concentration of force in a narrow area as in the conventional linear brush bundle (not shown) does not occur, and it is relaxed, so that a large force is applied to the gingiva during brushing This will prevent damage to the gums.

FIG. 3 shows another embodiment of the present invention, wherein the toothbrush has a brush bundle (21) which is tilted in the same direction as that shown in FIG. That is, since FIG. 3 is a rear view, the brush bundle (21) is on the rear side of the figure and is symmetrical to FIG.
The toothbrush of FIG. 1 and the toothbrush of FIG. 3 are preferably used in a pair, because the parts of the dentition that contact with the inclination in the direction of FIG. This is because it is opposite to that of 3.
Further, when used in a pair, the portion of the brush bundle (21) hits more and the angle and force of hitting change in the case of FIGS. 1 and 3, and the tooth brushing time also naturally increases. .
If the color of the toothbrush is sold as a set of two different colors (for example, red and white) in FIGS. 1 and 3, the sales amount will increase for the manufacturer and the user will have two types of toothbrushes. While using it happily, it has enough toothpaste habits, especially for children.
Furthermore, the toothbrush of FIG. 3 may share the toothbrush of FIG. 1 and its grip body (1), that is, the tip (2) can be attached to and detached from the grip body (1), that is, can be attached by tilting. Then, a pair of brush bundles (21) whose lateral inclination directions are reversed may be prepared, and one of them may be used by attaching it to the main body (1).
Further, in addition to the pair of brush bundles (21) whose lateral inclination directions are reversed, a plurality of brush bundles (21) of various shapes may be prepared and detachable.
Further, the front end (2) can be gripped and fixed to the main body (1) from side to side. For example, the bent state is fixed by a method disclosed in Japanese Utility Model Publication Nos. 5-95327 and 63-13025. As long as it is possible, a plurality of brush bundles (21) need not be prepared if it can be bent and fixed to the left and right by bellows bonding, turning bonding that can be bent and fixed to the left and right, that is, the bent state can be fixed. .
In both cases, the left and right inclinations of the brush bundle (21) are structurally fixed at the time of brushing, both in the case of being detachable and in the case of being able to fix the bent state.

Next, according to the present invention, if it is assumed that the narrow cross section of the grip body is extended in the tip direction with the same cross section, the brush bundle is laterally crossed so that the extended cross section intersects the end of the projection from the front of the brush bundle. The configuration of “arranged with suppressed directional protrusion” will be described with reference to FIGS. 6 and 7.
That is, this configuration provides the following two effects:
(1) The protrusion of the brush bundle in the lateral direction is suppressed, and tooth brushing is possible without being bulky in the lateral direction in the mouth.
This is because, as shown in FIG. 6, the lateral protrusion of the brush bundle (21) has an extended cross section that intersects the projection end from the front of the brush bundle (21), so that the protrusion length is reduced accordingly. It is.
(2) The user can brush his / her teeth without receiving a torsional load from the gripping body during brushing.
This is because, as shown in FIG. 7, when the brush bundle (21) is applied to the teeth and polished, the brush bundle (21) is subjected to force, but the left side of the extension of the connecting portion of the narrow cross section of the grip body (1). Since the force acts on the brush (the brush constituting the brush bundle) and the force acts on the right brush (the brush constituting the brush bundle), the rotational moment due to the force is applied to the entire surface of the brush bundle (21). This is because as long as it hits, it will be offset and become zero.
Here, the relation between the fact that the rotational moment of the connecting portion of the thin cross section of the grip body (1) becomes zero and the absence of a torsional force from the grip body (1) will be described.
In other words, if the user has a gripping body (1) base at the time of brushing, it is natural that it is natural to grab the width direction with a finger shorter than the width direction with a finger. Is because the grip part of the grip body (1) is gripped by holding the connecting part of the thin section in the base direction of the grip body (1) (that is, the center part or the middle part) with fingers. The fact that the rotational moment at the connecting portion of the narrow cross section of the grip body (1) becomes zero generally corresponds to the fact that the user is not subjected to the torsional force from the grip body (1).

以上の効果を有する。FIG. 9 shows another toothbrush of the present invention, which has two brush bundles (22) and brush bundles (23) unlike those of FIGS.
One brush bundle (22) has a bundle width and length fixed to the tip (2) like the brush bundle (21) of FIGS. 1 and 2, and the other brush bundle (23). ) Is projected and fixed to the tip side from the brush bundle (22).
The main action of the brush bundle (23) is to remove dirt such as lump of bacteria adhering between the teeth, that is, the brush bundle (23) is brushed by the user brushing the toothbrush up and down. Enter between the teeth (even if the brush bundle (21) in FIG. 2 or the brush bundle (22) in FIG. 9 cannot enter because the gap between the teeth is narrow and slightly deep), remove the dirt. It will be.
The effect of the toothbrushing directions on the left, right, top and bottom of the toothbrushes of FIGS. 2 and 9 is as follows compared to the conventional toothbrush:

It has the above effects.

Effect of the invention

The embodiments of the tooth brushing method of the present invention and the toothbrush used therefor are as described above, and the effects thereof will be listed below.
1. The toothbrushing method of the present invention and the toothbrush used therefor, in particular, the brush bundle is provided at the distal end of the grip body by tilting it laterally from the grip body at ½ (half) or more and 40 ° or less of the bundle width, When the brush bundle is tilted horizontally, the right and left slopes of the brush bundle are fixed during brushing, and the brush is brushed by holding only the body in the left and right direction. The moments of the above are repeated alternately, and the contact is made at an angle of 40 ° or less, so that the fine grains of food remaining between the teeth and the attached dirt are scraped off by the “wedge effect”.
2. The toothbrushing method of the present invention and the toothbrush used therefor, in particular, the brush bundle is provided at the distal end of the grip body by tilting it laterally from the grip body at ½ (half) or more and 40 ° or less of the bundle width, With the brush bundle tilted in the horizontal direction, the right and left slopes of the brush bundle are fixed during brushing, and the brush bundle protrudes in the horizontal direction because the brush bundle protrudes in the horizontal direction. However, the concentration of force in a narrow area, such as in a conventional brush bundle (not shown), which is linear, is mitigated without causing a large force on the gingiva, resulting in damage to the gingiva during brushing. Is prevented.
3. The toothbrushing method of the present invention and the toothbrush used therefor, in particular, assuming that the narrow cross section of the grip body is extended in the tip direction while maintaining the same cross section, the extended cross section intersects the end of the projection from the front of the brush bundle. In addition, since the brush bundle is arranged with restrained lateral protrusion, the brush bundle can be brushed without being bulky in the lateral direction in the mouth.
4). The toothbrushing method of the present invention and the toothbrush used therefor, in particular, assuming that the narrow cross section of the grip body is extended in the tip direction while maintaining the same cross section, the extended cross section intersects the end of the projection from the front of the brush bundle. Since the brush bundle is arranged with restrained lateral protrusion, the force also acts on the left brush of the extension of the connection part of the thin cross section of the grip body and the force also acts on the right brush. As long as the entire surface of the brush bundle is in contact with the teeth, the rotational moment is canceled and becomes zero, so that the user can brush his / her teeth without receiving a torsional force from the gripping body during brushing.
5. The toothbrushing method of the present invention and the toothbrush used therefor, in particular, the connecting portion of the grip body which is not inclined has a narrower cross section than the base portion of the grip body, and the length of the brush bundle is more than twice the bundle width. Although the length of the bundle protruding in the lateral direction (length K in FIG. 6) is not bulky, it is ensured as much as necessary, and the contact width in the vertical direction with the tooth is once increased by moving the inclined brush bundle in the horizontal direction. Thus, the brushing method of the present invention can be put to practical use.

The perspective view of the use condition of the toothbrush used for the toothbrushing method of this invention Front view of the toothbrush of FIG. Rear view of another toothbrush of the present invention (symmetrical to the toothbrush of FIG. 1) Enlarged front view of the brush bundle portion of FIG. The enlarged front view of the other brush bundle part of this invention Rear view of the use state of the toothbrush of FIG. The perspective view explaining that the rotational moment of the toothbrush of this invention becomes zero Front view explaining the problems of a conventionally known toothbrush Front view of another toothbrush of the present invention

DESCRIPTION OF SYMBOLS 1 Grip body 2 Tip part 21 Brush bundle 22 Brush bundle 23 Brush bundle

Claims (7)

A brush bundle whose length is more than twice the bundle width is provided at the front end of the grip body by tilting it laterally from the grip body to ½ (half) of the bundle width to 40 ° or less, The connecting portion of the grip body not inclined to the tip portion has a narrower cross section than the base portion of the grip body, and it is extended if it is assumed that the narrow cross section of the grip body is extended in the tip direction with the same cross section. The brush bundle is arranged so that the cross-section intersects with the projection end from the front of the brush bundle, and the lateral protrusion of the brush bundle is suppressed, and the brush bundle is inclined horizontally by the toothbrush fixed when brushing. Toothbrushing method of brushing by holding only the body in the left and right direction A brush bundle whose length is more than twice the bundle width is provided at the front end of the grip body by tilting it laterally from the grip body to ½ (half) of the bundle width to 40 ° or less, the grip connecting part amount of the inclined state without the body of the tip portion is a narrow cross-section than the base of the main body grip, the extended assuming extended the narrow cross section of the grip body to leave the tip end direction of the same cross-sectional The toothbrush is arranged such that the cross section of the brush bundle intersects with the projection end from the front of the brush bundle, the lateral protrusion of the brush bundle is suppressed, and the right and left inclination of the brush bundle is fixed during brushing, and the brush bundle of the toothbrush A pair of toothbrushes, each of which has a grip body in the vertical direction and the other front toothbrush in which the brush bundle on the front surface is inclined in the same direction. A brush bundle whose length is more than twice the bundle width is provided at the front end of the grip body by tilting it laterally from the grip body to ½ (half) of the bundle width to 40 ° or less, The connecting portion of the grip body not inclined to the tip portion has a narrower cross section than the base portion of the grip body, and it is extended if it is assumed that the narrow cross section of the grip body is extended in the tip direction with the same cross section. The brush bundle is arranged such that the cross-section intersects with the projection end from the front of the brush bundle, the lateral protrusion is suppressed, and the tip portion is an inclined shape product integrally inclined from the grip body. Toothbrush with left and right inclination fixed when brushing A brush bundle whose length is more than twice the bundle width is provided at the front end of the grip body by tilting it laterally from the grip body to ½ (half) of the bundle width to 40 ° or less, The connecting portion of the grip body not inclined to the tip portion has a narrower cross section than the base portion of the grip body, and it is extended if it is assumed that the narrow cross section of the grip body is extended in the tip direction with the same cross section. The brush bundle is arranged so that the cross section intersects the projection end from the front of the brush bundle and the lateral protrusion is suppressed, and the tip can be gripped and fixed to the main body from side to side, that is, bendable and the folded state is fixed Toothbrush in which the right and left inclination of the brush bundle is fixed during brushing A brush bundle whose length is more than twice the bundle width is provided at the front end of the grip body by tilting it laterally from the grip body to ½ (half) of the bundle width to 40 ° or less, The connecting portion of the grip body not inclined to the tip portion has a narrower cross section than the base portion of the grip body, and it is extended if it is assumed that the narrow cross section of the grip body is extended in the tip direction with the same cross section. The brush bundle is arranged such that the cross-section intersects with the projection end from the front of the brush bundle, the lateral protrusion is suppressed, and the tip portion is detachable from the grip body, i.e., can be attached to be inclined and attached. The toothbrush with which the right and left inclination of the brush bundle is fixed during brushing A brush bundle whose length is more than twice the bundle width is provided at the front end of the grip body by tilting it laterally from the grip body to ½ (half) of the bundle width to 40 ° or less, The connecting portion of the grip body not inclined to the tip portion has a narrower cross section than the base portion of the grip body, and it is extended if it is assumed that the narrow cross section of the grip body is extended in the tip direction with the same cross section. The brush bundle is arranged such that the cross section intersects the projection end from the front of the brush bundle, and the lateral protrusion is suppressed, and another brush bundle that projects thinly to the tip side of the brush bundle is added, and the brush bundle Toothbrush with left and right inclination fixed during brushing A brush bundle whose length is more than twice the bundle width is provided at the front end of the grip body by tilting it laterally from the grip body to ½ (half) of the bundle width to 40 ° or less, The connecting portion of the grip body not inclined to the tip portion has a narrower cross section than the base portion of the grip body, and it is extended if it is assumed that the narrow cross section of the grip body is extended in the tip direction with the same cross section. A toothbrush in which the brush bundle is arranged such that the cross-section intersects with the projection end from the front of the brush bundle and the lateral protrusion of the brush bundle is suppressed, and the right and left inclination of the brush bundle is fixed during brushing

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