JP2009240746A - Toothbrush - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toothbrush wherein the state of bristles implanted to a head portion can be varied actively and positively according to the state of the teeth and gums different among respective persons and according to the washed state varying moment by moment. <P>SOLUTION: The toothbrush is provided with at least one linear hinge portion which penetrates from the end of the head portion to the rear end of a handle portion through a neck portion. Thus, the whole toothbrush can be bent within a plane perpendicular to the direction of a straight line penetrating from the center of the end of the head portion to the center of the rear end of the handle portion. In order to efficiently carry out this movement, the shapes of the handle portion and the head portion are devised. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention uses the movement of the hand gripping the handle part to polish the density at which the tips of the bristles gather, the angle at which the tips of the bristles contact the teeth and gums, the condition of the surface consisting of the point set of the tips of the bristles, etc. The present invention relates to a toothbrush that can be actively and positively adjusted according to a site such as a tooth or gum, or according to a cleaning state of a tooth or gum that changes as needed.

  As is generally known, the structure of a general toothbrush is composed of a head part in which bristles are implanted, a handle part for gripping with a hand, and a neck part connecting the head part and the handle part, and these are arranged in a straight line. It is out. The neck portion is often thinner than the handle portion or the head portion, and is slightly curved by the force pressing the bristles against the teeth or gums. A few dozen bristles are bundled, and a plurality of bristles are appropriately arranged on one side of the head portion. A collection of points at the tips of the bristles implanted in the head portion constitutes a flat surface or a curved surface.

  The purpose of these structures is to allow the bristles tips to reach the teeth or gums, to bring the bristles tips into close contact with the surfaces of the teeth or gums, to allow accurate brushing of the teeth or gums according to hand movements, For example, the tip of the bristles should be inserted between the teeth or between the teeth and gums.

  Important among these objectives is to bring the tips of the bristles into close contact with the teeth or gums and allow for accurate brushing of the teeth or gums. This must be achieved without the need for excessive pressure.

  To achieve this purpose, the size and shape of the head, the arrangement of bristles bundled in the head, the length and thickness of the bristles, the softness of the bristles, the shape of the bristles, the softness of the neck or handle There are many toothbrushes that adjust each element such as ease of gripping the handle.

For example, there is a toothbrush disclosed by the following patent document as an attempt to more actively solve this object.
Special table 2006-505375

  The head portion of this toothbrush is intended to optimize the distribution of the tips of each bristles according to the portion to be pressed by the pressure pressed against the teeth or gums, but it is only passively performed, According to the will of the user, the user does not actively and positively change the distribution of the bristles tip by the part to be brushed.

  Each element that determines the shape of the toothbrush is usually almost determined at the time of manufacture, except for some deformation due to the elasticity of the bristles and neck, and the user of the toothbrush depends on the condition in his oral cavity, You will be forced to choose the best one out of its many products. However, the condition of an individual's oral cavity is quite different, and it is virtually impossible to find a toothbrush that is perfectly suited to itself.

  Furthermore, even if it is limited to the same person, the shape and state of the back teeth and front teeth, the front and back sides of the teeth and gums, the unevenness of the top and bottom surfaces of the back teeth, and the curvature of the arc in which the teeth are lined are very complex. A complete cleaning of all teeth or gums cannot be expected with a toothbrush.

  In addition, the cleaning state is constantly changing, such as the beginning and end of polishing. For example, when brushing teeth after eating, the beginning of brushing may have a lot of food in the gaps between the teeth and gums, so removal will be the main purpose of brushing, and at the end of brushing the teeth The purpose will shift to removal of hard-to-remove dirt such as plaque, or massage of gums.

  Although it is ideal to select an optimal toothbrush from several types of toothbrushes at any time, depending on the site to be brushed or due to changes in the cleaning state, it is necessary and troublesome to change.

  In addition, with normal toothbrushes, bristles other than the bristles that are optimally in contact with the tooth or gum to be brushed are in contact with unnecessary parts, preventing brushing of the bristles that are in optimal contact. Sometimes. In order to solve this problem, measures such as reducing the head part can be considered, but if only this is realized, if it is desired to bring the tips of the bristles into contact over a wide range, for example, teeth, gum side surfaces, back teeth meshing When brushing a portion, the toothbrush with a small head portion must frequently change the brushing position.

  In this way, many existing toothbrushes are assumed to be in the oral cavity of a general person, and their shape is inevitably determined by a certain degree of compromise.

  The present invention improves the above problems.

  The toothbrush of the present invention has at least one linear hinge portion that penetrates from the front end of the head portion to the rear end of the handle portion through the neck portion, and from the center of the front end of the head portion to the rear end of the handle portion. The entire toothbrush can be bent in a plane perpendicular to the direction of the straight line (long direction) extending to the center.

  As a result, when pressure is applied from both side surfaces of the handle portion toward the center in the short direction, the neck portion connected to the handle portion and the head portion connected to the neck portion are moved to the center in the short direction as in the movement of the handle portion. As a result, the ends of the bristles implanted in the head portion gather at the center in the short direction.

  In addition, the hinge part has elasticity and resilience, and if the hand pressure that is pressed from both sides of the handle part is loosened, or the pressure that presses the tip of the bristles against the teeth or gums is loosened, the bristles implanted in the head part To the original position.

  The shape of the handle portion of the toothbrush of the present invention is a semicircular shape in which a cross section cut by a plane perpendicular to the longitudinal direction is a semicircular shape in which the top is an arc and the bottom is a chord when the direction in which the bristles of the head portion extend is viewed vertically downward. Basic. The shape of the handle portion may be a plane, a curved surface, or a combination of a plane and a curved surface. Therefore, as a simplest shape of the handle portion of the present invention constituted only by a plane, a cross section cut by a plane perpendicular to the long direction can be a triangle with the top as an apex angle.

  Two or more hinge portions described above are provided in the center of the arc, or two or more with a vertical plane passing through the center of the arc as a symmetry plane.

  When pressure is applied from both sides of the arc toward the center in the short direction, the partial arcs facing each other on the axis of symmetry move so as to approach each other. Then, the neck part connected to the handle part and the head part connected to the neck part bend toward the center in the short direction like the movement of the handle part, and as a result, the tip of the bristles implanted in the head part is in the center in the short direction. get together.

  If the center of the arc is pressed from above while supporting the string under, the partial arcs confronting each other on the axis of symmetry move away from each other. Then, the tip of the bristles planted in the head portion spreads outward from the center in the short direction.

  In addition, when the bristles implanted in the head part are pressed against the teeth or gums, the bristles tip spreads outward from the center in the short direction, so that the bristles tip is not excessively pressed against the gums. Can reduce the risk of damaging the gums.

  On the side surface of the handle portion, the direction in which the bristles of the head portion extend is vertically downward, and when viewed in the direction from the handle portion to the head portion, an inclination similar to that of a trapezoidal side surface with a short upper base and a long lower bottom is provided. By this inclination, the pressure from both side surfaces toward the center in the short direction can be more effectively contributed to the movement of bringing the partial arcs opposed by the symmetry axis closer to each other.

  The maximum width in the short direction of the handle portion may be wider than that of a normal toothbrush. By doing so, it is possible to perform a bending motion with a slight force to grip the handle portion. If the position having the maximum width is set only at a position close to the neck portion of the handle portion, both ease of gripping the handle portion and ease of bending can be achieved.

  When the direction in which the bristles of the head portion extend is vertically downward and viewed in the direction from the handle portion toward the head portion, the back portion of the handle portion, that is, the side opposite to the side where the bristles extend is directed toward the center in the short direction. There is excitement. Due to this swell, when the tip of the bristles implanted in the head part is expanded from the center in the short direction to the outside, the back part of the handle part can be easily pressed with a finger.

  A horizontal finger rest plate can also be provided on the back portion of the handle portion adjacent to the neck portion. The horizontal finger rest plate is fixedly installed on one of the handle portions divided in the short direction. By doing so, the back portion of the handle portion can be easily pushed with a finger.

  The length of the horizontal finger rest plate in the longitudinal direction can be made equal to the length of the handle portion and can be extended to the entire handle portion. In this case, the horizontal finger rest plate can contribute to the ease of the bending motion of the toothbrush of the present invention regardless of how it is held.

  At the outermost part of the handle part divided in the short direction, the two plates that extend from the abdominal part adjacent to the neck part and are installed almost perpendicularly in the short direction are slightly extended downward. A vertical finger rest plate adjusted as described above can also be provided. By doing so, the force of pinching the handle portion with a finger can be used for the bending motion.

  When the vertical finger rest plate is provided, it is easier to hold the vertical finger rest plate with fingers by making the width in the short direction of the handle portion at the installation position narrower than other handle portions.

  If the horizontal finger rest plate and the vertical finger rest plate are shaped with a curved surface together with the handle portion so as to be in close contact with the shape of the finger, ergonomics are excellent.

  When the horizontal finger rest plate and the vertical finger rest plate are installed on the handle portion adjacent to the neck portion, there is an effect of promoting an optimum way of holding the toothbrush.

  In the belly part of the handle part, each outermost part of the handle part divided into at least two parts in the short direction has a bulge parallel to the long direction of the handle part. If the back portion of the handle portion is pressed from above while supporting this swell, the swell serves as a fulcrum and promotes the movement of the handle portion bending outward in the short direction.

  There is a recess parallel to the handle portion at the center of the belly portion of the handle portion. Due to the presence of this depression, it is possible to avoid contact of the finger with the handle portion that hinders the bending motion. Moreover, when a finger is placed in the recess, it is possible to promote the movement of spreading the tip of the bristles implanted in the head portion from the center in the short direction to the outside.

  The toothbrush of the present invention can be bent in a plane perpendicular to the long direction, but it is necessary to limit the degree of the bending. The toothbrush of the present invention is provided with a bending stopper for this purpose.

  The shape of the bending stopper is such that the direction in which the bristles of the head part extend vertically downwards, and when viewed in the direction from the handle part to the head part, the cross-sections cut by the plane perpendicular to the long direction are opposite to each other. There are two triangles.

  By adjusting the angle of this apex angle, the degree of bending motion is adjusted. To increase the degree of bending, adjust the apex angle to be small. If you want to reduce the degree of bending, increase the apex angle to approach 180 degrees.

  The bending stopper is installed at an upper portion and a lower portion adjacent to the hinge portion when the bristles of the head portion extend vertically downward and viewed from the handle portion toward the head portion. That is, there is a hinge portion to connect the apex angles of the two triangles of the folding stoppers facing each other.

  The degree to which the tips of the bristles implanted in the head part gather in the center in the short direction and the degree to spread outward from the center in the short direction can be adjusted separately. That is, the upper slope and the lower slope of the apex angle of the facing triangle of the above-described folding stopper may be adjusted separately.

  For example, assuming the toothbrush of the present invention that uses the bending motion to collect the bristles at the center in the short direction, the upper part from the apex angle of the opposing triangle of the bending stopper is not inclined and no force is applied to the handle part. The lower end of the folding stopper is set at an appropriate slope from the apex angle of the opposing triangle, and the tip of the bristles required when the lower bending stopper comes into contact with the handle. Make sure you get the concentration.

  In order to make the bending motion flexible, the direction in which the bristles of the head part extend is vertically downward, and when viewed in the direction from the handle part to the head part, the straight part parallel to the longitudinal direction is directly above and below the hinge part. A groove is provided. Accordingly, no force is applied only to the connecting portion of the hinge portion, and the entire hinge portion can be contributed to the bending motion.

  When the tips of bristles are moved to the center in the short direction, the width in the short direction of the surface consisting of a set of points at the tips of the bristles is narrowed, resulting in an increase in the density of bristles tips gathering and the bristles tips to the gaps in the teeth. You can concentrate on. On the contrary, in the case of widening, the width in the short direction of the surface formed by the point set of the bristles becomes wider, and the bristles can be widely contacted with the surfaces of the teeth and gums.

  In order to make it easy to obtain the concentration of the ends of the bristles, the bristles bundled on the head part may be flocked alternately with a hinge portion sandwiched in a checkered pattern. In this way, when the tips of the bristles are collected in the center in the short direction, the tips of the bristles do not collide with each other, so that the tips of the bristles near the center in the short direction are arranged without gaps.

  In a state where no force is applied to the handle portion, the tip of the bristles can be moved closer to the center in the short direction to increase the density at which the tips of the bristles gather in advance. As described above, the toothbrush of the present invention makes it possible to spread the tip of the bristles from the center in the short direction toward the outside by the movement of the hand gripping the handle portion or by the pressure pressing the tip of the bristles against the teeth. Because of its structure and hand movement, the tip of the bristle is optimally distributed to the teeth or gums during brushing, so the bristle tip is moved closer to the center in the short direction to increase the density of bristle tips in advance. There is no problem. Of course, in the state where no force is applied to the handle portion, it is possible to make the extending direction of the bristles substantially parallel to the vertical direction, and to move the tip of the bristles to the center in the short direction only when necessary.

  If the ends of the bristles are moved to the center in the short direction in advance, the length of the bristles is made uniform, and if the bristles are planted perpendicularly to the head part, the direction in which the bristles of the head part extend is vertically downward, and the head When viewed in the direction from the part toward the handle part, the line connecting the points of the ends of the bristles is a mountain shape. That is, the shape easily encloses the convex portion of the tooth. Furthermore, by adjusting the length of the tip of the bristles and making the surface formed by the point set of the tips of the bristles into a curved surface, a more optimal contact surface for the tooth or gum can be provided. In conventional toothbrushes, the contact surface for the teeth or gums is determined at the time of manufacture and does not change thereafter, but in the present invention, the surface consisting of the point set of the bristles can be actively and actively changed. .

  The hinge part of the head part can be omitted. That is, the hinge part is only the handle part and the neck part. In this case, the degree of freedom of division of the head portion is increased, and a bundle of bristles can be appropriately arranged.

  For example, when a cut is made so as not to divide only the tip of the head part, a special bunch of bristles with a devised length and shape can be arranged in this part. Alternatively, it is possible to increase the density of bristles at the center in the short direction of the head portion in order to avoid the incision. By devising these incisions, the effects of the present invention can be maintained even with respect to the shape and arrangement of various bristles bundles.

  The toothbrush of the present invention uses the movement of the hand holding the toothbrush to actively determine the density at which the tips of the bristles gather, the angle at which the tips of the bristles touch the teeth and gums, the state of the surface consisting of the point set of the tips of the bristles, etc. And it is possible to make adjustments positively.

  Therefore, the user of the toothbrush can adjust the tip of the bristles to an optimum state for brushing according to the part of the teeth and gums to be brushed, or according to the constantly changing cleaning state of the teeth and gums.

  For example, if the tip of the bristle planted in the head is moved to the center in the short direction, the tip of the bristle can be concentrated on the tooth or gum to be polished, especially at the boundary between the tooth and the gum. It is possible to efficiently remove plaque.

  If the tip of the bristles implanted in the head part is not moved to the center in the short direction, or if it is spread outward from the center in the short direction, the tip of the bristles can be brought into contact with a wide range of teeth or gums. Efficient brushing is possible.

  These adjustments can be made by the user of the toothbrush while feeling that the tip of the bristles is in contact with the teeth or gums, so that even during brushing the state of the tip of the bristles relative to the contact site It can always be optimized.

  Since the cleaning state always changes from the beginning to the end of polishing, the manner of brushing changes accordingly. For example, when brushing teeth after eating, the beginning of brushing will be brushed overall to remove leftovers, and the middle will be brushed and brushed heavily where dirt or plaque remains. The end might be an emphasis on gum massage. Even in such a case, the toothbrush of the present invention can optimize the tip of the bristles for each cleaning state.

  In addition, as a result of concentrating the tip of the bristles in the center in the short direction, even in a narrow range such as the tooth or gum to be brushed, the boundary between the tooth and the gum, the bristles to be brushed or all of the bristle Since the bristles can be concentrated on the gums, the bristles other than the optimally contacting bristles can be prevented from coming into contact with unnecessary portions and inhibiting the brushing of the optimally contacting bristles.

  When the tip of the bristles implanted in the head part is spread outward from the center in the short direction, if the gripping force is loosened and the tip of the bristles is pressed against the teeth or gums, excessive pressure on the tip of the bristles will be applied. Because it will escape, damage to the gums can be reduced.

  In addition, it can be expected that the bristles are deformed by being pressed with a strong force and prevented from being fixed, thereby extending the life of the bristles.

  From now on, the present invention will be described with reference to the drawings.

  FIG. 1-1 is a plan view of a conventional toothbrush 10. The long direction L-L ′ and the short direction S-S ′. The handle portion 11, the neck portion 12, and the head portion 13 are connected in the long direction L-L 'in this order. Each of the handle portion 11, the neck portion 12, and the head portion 13 has a width in the short direction S-S '. The width of the neck portion 12 in the short direction S-S ′ is often narrower than the width of the handle portion 11 and the head portion 13 in the short direction S-S ′. A bundle of bristles 14 is implanted in the head portion 13 substantially perpendicularly in the long direction L-L 'and the short direction S-S'. This is a belly portion 16 of the handle portion. The basic structure of the toothbrush of the present invention is not changed.

  FIG. 1-2 is a side view of a conventional toothbrush 10. The long direction L-L ′ and the bristle direction G-G ′. The handle portion 11, the neck portion 12, and the head portion 13 are connected in the long direction L-L 'in this order. Each of the handle portion 11, the neck portion 12, and the head portion 13 has a thickness in the bristle direction G-G '. A bundle of bristles 14 extends in the bristle direction G-G '. The back portion 15 of the handle portion and the belly portion 16 of the handle portion. The basic structure of the toothbrush of the present invention is not changed.

  FIG. 2 is an overall view of the toothbrush 20 of the present invention having one hinge portion 22. The handle portion 21, the neck portion 24, and the head portion 25 are connected in the long direction similarly to the conventional toothbrush 10, and the hinge portion 22 is connected to the handle portion divided in the short direction at the center in the short direction. is there. A look at the butt portion 26 of the handle portion shows the characteristics of the shape of the handle portion of the present invention. The side surface 27 of the handle portion is inclined from the back of the handle portion toward the abdomen. This is a horizontal finger rest plate 23a. This is the vertical finger rest plate 23b. In the toothbrush of the present invention shown in this figure, the tips of the bristles 28 are gathered at the center in the short direction with no force applied to the handle portion, but no force is applied to the handle portion. Can be parallel to the vertical direction. This is a bending stopper 29.

  FIG. 3A is a plan view of the toothbrush 20 of the present invention having one hinge portion. The handle portion 21, the neck portion 24, and the head portion 25 are connected in the long direction similarly to the conventional toothbrush 10, and the hinge portion 22 is connected to the handle portion divided in the short direction at the center in the short direction. is there. This is a horizontal finger rest plate 23a.

  In FIG. 3A, the maximum length in the long direction of the handle portion can be about 170 mm to 200 mm, the maximum width in the short direction of the handle portion can be about 10 mm to 25 mm, and the width of the hinge portion can be about 0.1 mm to 3 mm.

  FIG. 3-2 is a bottom view of the toothbrush 20 of the present invention having one hinge part. The bundles of bristle 28 facing each other with the hinge part in between are arranged in a staggered manner like a checkered pattern. This is the vertical finger rest plate 23b.

  FIG. 4-1 is a plan view of the toothbrush 30 of the present invention having two hinge portions. The outer handle portion 31a is arranged in a short direction so as to sandwich the center handle portion 31b, and a hinge portion 32 is provided so as to connect them. These sets form a handle portion similar to the conventional toothbrush 10. The handle portion, the neck portion 33, and the head portion 34 are connected in the long direction in the same manner as the conventional toothbrush 10, and the handle portion, neck portion in which the hinge portion 32 positioned symmetrically with respect to the center in the short direction is divided in the short direction. 33, penetrates in parallel to the long direction so as to connect the head part 34. This is a horizontal finger rest plate 39a.

  In FIG. 4-1, the maximum length in the long direction of the handle portion may be about 170 mm to 200 mm, the maximum width in the short direction of the handle portion may be about 10 mm to 25 mm, and the width of the hinge portion may be about 0.1 mm to 3 mm.

  FIG. 4-2 is a bottom view of the toothbrush 30 of the present invention having two hinge portions. The bristles bundled in the head part 34 divided in the short direction are arranged in a staggered manner like a checkered pattern. This is a vertical finger rest plate 39b.

  FIG. 5A is a cross-sectional view of the handle portion 21 of the toothbrush 20 of the present invention having one hinge portion cut along a plane perpendicular to the long direction. The hinge portion 22 connects the handle portion divided in the short direction. There is a fold stopper 29 adjacent to the hinge portion 22 to limit the fold motion. The back portion 37 of the handle portion forms a mountain shape toward the center in the short direction. The side surface 27 of the handle portion has a slope that spreads from top to bottom. The belly portion 38 of the handle portion is raised downward. A horizontal finger rest plate 23a is fixed to one side of the handle portion divided in the short direction. This is the vertical finger rest plate 23b. There is a recess 42 in the belly portion of the handle portion. In this figure, the horizontal finger rest plate and the vertical finger rest plate are linearly represented, but it is also possible to shape them with a curved surface together with the handle portion in consideration of ergonomics.

  In FIG. 5-1, the maximum width in the short direction of the handle portion may be about 10 mm to 25 mm, the maximum height of the handle portion in the bristle direction may be about 15 mm to 40 mm, and the width of the hinge portion may be about 0.1 mm to 3 mm.

  FIG. 5B is a cross-sectional view of the head portion 25 of the toothbrush 20 of the present invention having one hinge portion cut along a plane perpendicular to the long direction. It is a hinge part 22. In the toothbrush of the present invention shown in this figure, the tips of the bristles 28 are gathered at the center in the short direction with no force applied to the handle portion, but no force is applied to the handle portion. Can be parallel to the vertical direction.

  5-2, the maximum width in the short direction of the head portion 25 is about 15 mm to 20 mm, the maximum height in the bristle direction combining the head portion 25 and the bundle of bristles 28 is about 20 mm to 30 mm, and the width of the hinge portion is , About 0.1 mm to 3 mm.

  FIG. 6A is a cross-sectional view of the handle portion of the toothbrush 30 of the present invention having two hinge portions cut along a plane perpendicular to the long direction. The hinge portion 32 connects the handle portion divided in the short direction. There is a fold stopper 36 adjacent to the hinge portion 32 to limit the fold motion. The back portion 62 of the handle portion forms a mountain shape toward the center in the short direction. The side surface 61 of the handle portion has an inclination that spreads from top to bottom. The belly portion 63 of the handle portion is raised downward. There is a recess 64 in the belly portion of the handle portion. This is a horizontal finger rest plate 39a. This is a vertical finger rest plate 39b. In this figure, the horizontal finger rest plate and the vertical finger rest plate are linearly represented, but it is also possible to shape them with a curved surface together with the handle portion in consideration of ergonomics.

  6A, the maximum width in the short direction of the handle portion may be about 10 mm to 25 mm, the maximum height of the handle portion in the bristle direction may be about 15 mm to 40 mm, and the width of the hinge portion 32 may be about 0.1 mm to 3 mm.

  FIG. 6B is a cross-sectional view of the head portion 34 of the tooth plush 30 of the present invention having two hinge portions cut along a plane perpendicular to the long direction. The hinge portion 32 connects the handle portion divided in the short direction. In the toothbrush of the present invention shown in this figure, the tips of the bristles 35 are gathered in the center in the short direction with no force applied to the handle portion, but no force is applied to the handle portion. Can be parallel to the vertical direction.

  6B, the maximum width in the short direction of the head portion 34 is about 5 mm to 20 mm, the maximum height in the bristle direction combined with the head portion 34 and the bundle of bristles 35 is about 20 mm to 30 mm, and the width of the hinge portion 32. Can be about 0.1 mm to 3 mm.

  FIG. 7 shows an example of a head portion 70 in which a bunch of bristles can be arranged in a partition 75 at the tip end without splitting only the tip end of the head portion in a short direction. It is sectional drawing cut | disconnected by. A neck portion 71 and a head portion 72. It is a hinge part 73. It is the cut 74 of the head part which abbreviate | omitted the hinge part.

  FIG. 8 is a cross-sectional view of an example of a head portion 80 in which a bunch of bristles can be arranged so as to increase the density of the bristles in the center in the short direction, with the hinge portion omitted, cut along a plane perpendicular to the bristles direction. The neck portion 81 and the head portion 82. It is a hinge part 83. It is a cut 84 of the head part in which the hinge part is omitted.

  FIG. 9 is an enlarged view 90 of a cross section of the hinge portion 22 and the bending stopper 29 of the toothbrush of the present invention having one hinge portion, cut along a plane perpendicular to the longitudinal direction. There is a groove 91 for preventing the movement of the hinge portion 22.

  Since the toothbrush of the present invention can be industrially mass-produced with a plastic material having elasticity such as polypropylene, it has industrial applicability.

  It is a bottom view of the conventional toothbrush.   It is a side view of the conventional toothbrush.   It is a general view of the toothbrush of this invention which has one hinge part.   It is a top view of the toothbrush of this invention which has one hinge part.   It is a bottom view of the toothbrush of this invention which has one hinge part.   It is a top view of the toothbrush of this invention which has two hinge parts.   It is a bottom view of the toothbrush of this invention which has two hinge parts.   It is sectional drawing which cut | disconnected the handle | steering-wheel part of the toothbrush of this invention which has one hinge part by the plane perpendicular | vertical to the longitudinal direction.   It is sectional drawing which cut | disconnected the head part of the toothbrush of this invention which has one hinge part by the plane perpendicular | vertical to the longitudinal direction.   It is sectional drawing which cut | disconnected the handle | steering-wheel part of the toothbrush of this invention which has two hinge parts by the plane perpendicular | vertical to the longitudinal direction.   It is sectional drawing which cut | disconnected the head part of the toothbrush of this invention which has two hinge parts by the plane perpendicular | vertical to a longitudinal direction.   It is a cross-sectional view of the head part and the neck part cut off by a plane perpendicular to the bristle direction, in which the bristles can be arranged at the tip of the head part so that only the tip of the head part is not divided in the short direction. is there.   It is sectional drawing cut | disconnected by the surface perpendicular | vertical to the bristle direction of the head part and neck part which can arrange | position a bristle bundle so that the density of the bristle bundle | flux of a short direction center may be arrange | positioned, and the hinge part was abbreviate | omitted.   It is an enlarged view of the cross section cut | disconnected by the surface perpendicular | vertical to the longitudinal direction of the hinge part and folding stopper of the toothbrush of this invention which has one hinge part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Conventional toothbrush 11 Conventional toothbrush handle part 12 Conventional toothbrush neck part 13 Conventional toothbrush head part 14 Conventional toothbrush bristle bundle 15 Conventional toothbrush handle part back part 16 Conventional toothbrush handle Abdominal part LL 'long direction SS' short direction GG 'bristle direction 20 toothbrush 21 of the present invention having one hinge part handle part of the toothbrush of the present invention having one hinge part 22 The hinge part 23a of the toothbrush of the present invention having one hinge part The horizontal finger rest plate 23b of the toothbrush of the present invention having one hinge part The vertical finger rest plate 24 of the toothbrush of the present invention having one hinge part The neck portion 25 of the toothbrush of the present invention having one hinge portion The head portion 26 of the toothbrush of the present invention having one hinge portion The hand of the toothbrush of the present invention having one hinge portion Butt portion 27 side surface 28 of toothbrush handle portion of the present invention having one hinge portion toothbrush bristles bundle 29 of the present invention having one hinge portion toothbrush of the present invention having one hinge portion Bending stopper 30 Toothbrush 31a of the present invention having two hinge portions Handle portion 31b outside the toothbrush of the present invention having two hinge portions The central handle portion of the toothbrush of the present invention having two hinge portions 32 The hinge part of the toothbrush of the present invention having two hinge parts 33 The neck part of the toothbrush of the present invention having two hinge parts 34 The head part of the toothbrush of the present invention having two hinge parts 35 The hinge part is 2 A bundle of bristle 36 of the toothbrush of the present invention which is a book Bending stopper 37 of the toothbrush of the present invention which has two hinge parts A back part 38 of the toothbrush of the present invention which has one hinge part The abdomen portion 39a of the toothbrush of the present invention which is a book The horizontal finger rest plate 39b of the toothbrush of the present invention which has two hinge portions The vertical finger rest plate 42 of the toothbrush of the present invention which has two hinge portions The hinge portion is 1 Recess 61 of the belly portion of the handle portion of the toothbrush of the present invention which is a book Side surface 62 of the handle portion of the toothbrush of the present invention which has two hinge portions The back of the handle portion of the toothbrush of the present invention which has two hinge portions 63 of the handle portion of the toothbrush of the present invention having two hinge portions 64 A recess portion 70 of the belly portion of the handle portion of the toothbrush of the present invention having two hinge portions The head portion in which the hinge portion is omitted Example 1
71 Head part example 1 of the head part with the hinge part omitted 1 Head part 73 of the head part example 1 with the hinge part omitted Hinge part 74 of the neck part of the head part example 1 without the hinge part Omitted hinge part Incision 75 in the head portion of Example 1 of the head portion, the section 80 at the tip of Example 1 of the head portion in which the hinge portion is omitted Example 2 of the head portion in which the hinge portion is omitted
81 Neck part 82 of the head part example 2 with the hinge part omitted The head part 83 of the head part example 2 without the hinge part 83 The hinge part 84 of the neck part of the head part example 2 without the hinge part The hinge part is omitted Incision 90 in the head part of the example 2 of the head part. Enlarged view of the hinge part and the bending stopper of the toothbrush of the present invention having one hinge part 91. A groove for preventing the movement of the hinge part.

Claims (26)

  Using the movement of the hand holding the handle, the density of the bristles tips gathered, the angle at which the bristles tip contacts the teeth and gums, the state of the surface consisting of the bristles point set, etc. A toothbrush that can be actively and positively adjusted according to a site such as a gum or according to a cleaning state of a tooth or gum that changes as needed.   There is at least one linear hinge that passes from the tip of the head part through the neck part to the rear end of the handle part, and the direction of the straight line extends from the center of the head part to the center of the rear end of the handle part. The toothbrush according to claim 1, wherein the toothbrush can be bent in a plane perpendicular to the toothbrush.   When pressure is applied from both sides of the handle part toward the center in the short direction, the neck part connected to the handle part and the head part connected to the neck part bend toward the center in the short direction, similar to the movement of the handle part. As a result, the toothbrush according to claim 1, wherein the ends of the bristles implanted in the head portion gather at the center in the short direction.   Holding the back part of the handle part from above while supporting the belly part of the handle part below, the neck part connected to the handle part and the head part connected to the neck part bend outward from the center in the short direction. As a result, the toothbrush according to claim 1, wherein the ends of the bristles implanted in the head portion spread outward from the center in the short direction.   Give the hinge part elasticity and restoration, loosen the pressure of the hand pressing from both sides of the handle part, or loosen the pressure of pressing the bristle tip against the teeth or gums, the tip of the bristle planted in the head part The toothbrush of claim 1, wherein is returned to its original position.   The toothbrush according to claim 1, wherein when the bristles implanted in the head part are pressed against the teeth or gums, the ends of the bristles spread outward.   The shape of the handle section is such that the section cut by a plane perpendicular to the longitudinal direction is basically a semicircular shape with the arc on the top and the string on the bottom when the direction in which the bristles extend from the head is vertically downward. The toothbrush of Claim 1 comprised by the combination of a plane, a curved surface, or a plane and a curved surface.   The shape of the handle portion has a slope similar to that of a trapezoidal side surface having a short upper base and a long lower bottom when viewed from the handle portion toward the head portion with the direction in which the bristles of the head portion extend vertically downward. Toothbrush.   The toothbrush according to claim 1, wherein the maximum width in the short direction of the handle portion is wider than a normal toothbrush only at a position close to the entire handle portion or the neck portion of the handle portion.   The toothbrush according to claim 1, wherein the back portion of the handle portion has a bulge toward the center in the short direction.   The toothbrush of Claim 1 which provided the horizontal finger rest board in the back part of the handle | steering-wheel part.   The toothbrush according to claim 1, further comprising a vertical finger rest plate extending from an abdominal portion adjacent to the neck portion at an outermost contour of the divided handle portion and substantially perpendicular to the short direction.   2. When the vertical finger rest plate is provided, the width in the short direction of the handle portion at the installation position is made narrower than the width of other handle portions, and the vertical finger rest plate is easily held between fingers. Toothbrush.   The toothbrush according to claim 1, wherein the horizontal finger rest plate and the vertical finger rest plate are shaped with a curved surface together with the handle portion.   2. The toothbrush according to claim 1, wherein when a horizontal finger rest plate and a vertical finger rest plate are provided, this has an effect of promoting an optimal way of holding the toothbrush.   The toothbrush according to claim 1, wherein each of the abdominal portions of the outermost contour of the handle portion divided into at least two parts has a bulge parallel to the handle portion.   The toothbrush of Claim 1 which provided the hollow parallel to a handle part in the center of the belly part of a handle part.   The toothbrush of Claim 1 which provided the bending stopper which can adjust the degree to which it bends.   The toothbrush of Claim 1 which provided the linear groove | channel parallel to a long direction in the directly upper part and the lower part of a hinge part.   The toothbrush according to claim 1, wherein a bundle of bristles to be planted on the head portion is arranged alternately with a hinge portion sandwiched in a checkered pattern.   The toothbrush according to claim 1, wherein a hinge portion of the head portion is omitted.   The toothbrush according to claim 1, wherein in a state where no force is applied to the handle portion, the tip of the bristles is moved closer to the center in the short direction to increase the density at which the tips of the bristles gather in advance.   The toothbrush according to claim 1, wherein a surface composed of a set of points at the tip of the bristles can be matched to the shape of a tooth or gum and can be actively and actively changed.   The toothbrush according to claim 1, wherein almost all of the bristles can be optimally brought into contact with teeth and gums.   The toothbrush of Claim 1 which can relieve the damage which the front-end | tip of a bristle gives to a gum.   The toothbrush according to claim 1, which can extend the life of the bristles.

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