JP2019162327A - Toothbrush for simultaneously brushing two sides of teeth - Google Patents

Abstract

To provide a toothbrush for simultaneously brushing two sides of teeth, the toothbrush that comprises a tubular rotating brush.SOLUTION: A toothbrush for simultaneously brushing two sides of teeth comprises: a handle 0101; a neck 0102 provided in the U-shape from a tip of the handle 0101; and a tubular rotating brush 0103 arranged in a freely turning manner by using a vertical direction as an axis to a virtual flat surface 0104 assumed in the U-shape of the neck 0102 at a tip of the neck 0102. By the toothbrush, the backside of the teeth where usually it is hard to be brushed and an unbrushed portion is increased can be brushed carefully simultaneously by carefully brushing the surface being easy to be brushed, and therefore an intraoral hygiene environment can be improved dramatically. Also, the tubular rotating brush is moved in the parallel direction to the teeth and also is vertically moved to the teeth, and thereby a tooth brushing effect is improved.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a toothbrush that can simultaneously polish the tooth surface.

  Generally, a dentist instructs a patient to brush his teeth over a period of about 30 minutes. However, in daily life, it is very difficult to secure 30 minutes for brushing teeth, and the actual situation is that it only takes a few minutes. The surface of the teeth is conspicuous and can be easily seen by yourself, so it seems that there are many people who polish relatively carefully, but the back side of the teeth may not be visible, and relatively many people It is in a state of unpolished over a wide area. In recent years, diseases such as periodontal disease and gingivitis caused by deterioration of oral hygiene have been regarded as problems.

  Conventionally, there has been a technique for bifurcating the tip of a toothbrush, which is intended to brush the upper and lower teeth simultaneously. When brushing the back of the teeth, the upper and lower teeth cannot be brushed at the same time, so the time required for brushing was not reduced so much, and the back of the hard-to-brush teeth was not easily brushed. .

JP2004-351223

  There has been a demand for a toothbrush that can shorten the time required for brushing teeth and can clean both the front and back surfaces of the teeth.

  Therefore, in order to solve the above-described problems, the present invention provides the following toothbrushes for simultaneously brushing the front and back surfaces of teeth. That is, as a first invention, a handle, a neck provided in a U shape from the tip of the handle, and a pivot at the tip of the neck about a virtual plane assumed to be a U shape of the neck can be freely rotated. A toothbrush for simultaneous brushing of teeth, comprising: a cylindrical rotating brush disposed on the surface.

  Next, as a second invention, the cylindrical rotating brush provides the toothbrush for simultaneous brushing of teeth according to the first invention, which is arranged above and below the neck, respectively.

  Next, as a third aspect of the invention, there is provided the front and back simultaneous brushing toothbrush according to the first aspect or the second aspect, wherein one of the necks is shorter than the other.

  Next, as a fourth invention, the cylindrical rotary brush is configured to form a valley shape toward the neck portion with upper and lower rotary toothbrushes, or a third invention dependent on the second invention or the second invention. The toothbrush for simultaneous front and back polishing according to the present invention is provided.

  Next, as a fifth invention, for front and back simultaneous polishing according to any one of the first invention to the fifth invention, further comprising an interval adjusting portion for widening or narrowing the U-shaped interval of the neck. Toothbrush is provided.

  By using the toothbrush configured as described above, it is possible to shorten the time required for brushing the teeth and to clean both the front and back surfaces of the teeth.

The figure which shows the example of the whole image of the toothbrush for front and back simultaneous polishing in Embodiment 1. The figure which shows the example of the whole image of the toothbrush for front and back simultaneous polishing in Embodiment 1. The figure which shows the example of the state which is brushing using the toothbrush for front and back simultaneous brushing in Embodiment 1. The figure which shows the example of the whole image of the toothbrush for front and back simultaneous polishing in Embodiment 2. The figure which shows the example of the whole image of the toothbrush for front and back simultaneous polishing in Embodiment 3. The figure which shows the example of the whole image of the toothbrush for front and back simultaneous polishing in Embodiment 3. The figure which shows the example of the whole image of the toothbrush for front and back simultaneous polishing in Embodiment 3. The figure which shows the example of the whole image of the toothbrush for front and back simultaneous polishing in Embodiment 4. The figure which shows the example of the whole image of the toothbrush for front and back simultaneous polishing in Embodiment 5.

<Overview of Embodiment 1>
The invention in the present embodiment is a toothbrush in which the neck portion of the toothbrush is divided into U-shaped bifurcated parts, and a cylindrical rotating brush is provided at both ends. By using the U-shaped toothbrush in this embodiment, it becomes possible to polish the front and back of the teeth simultaneously, and the back side of the teeth, which is usually difficult to polish and much left behind, is also carefully polished by carefully polishing the surface that is easy to polish Since it becomes possible to polish, the sanitary environment in an oral cavity can be improved epoch-makingly. In addition, the brushing effect can be improved not only by moving the cylindrical rotating brush in the direction parallel to the teeth but also by moving it up and down relative to the teeth.

<Description of Configuration of Embodiment 1>
As shown in FIG. 1, the invention in this embodiment includes a handle (0101), a neck (0102) provided in a U-shape from the tip of the handle, and a virtual assumed to be a U-shape of the neck at the tip of the neck. A toothbrush for simultaneous front and back brushing of teeth, comprising a cylindrical rotating brush (0103) arranged to be rotatable about a vertical direction (0105) with respect to a plane (0104).

<Description of Configuration of Embodiment 1>
<Description of Embodiment 1 Handle>
The “handle” is the part that is held by the hand when brushing teeth. Therefore, the handle has a thickness that can be grasped with one hand. The material of the handle is made of plastic, rubber, metal, glass or the like. Since the toothbrush wets with water, it is preferable that the toothbrush is made of the above-described material that repels water in order to maintain the hygienic state of the toothbrush.

<Embodiment 1 Regarding the shape of the handle>
The shape of the handle is considered to be a straight bar. The length of the handle is not less than 5 centimeters and not more than 16 centimeters. The thickness of the handle is not less than 0.8 cm and not more than 1.5 cm. Particularly in the case of a toothbrush for children, the length of the handle is preferably 5 centimeters or more and 10 centimeters or less. In particular, in the case of a toothbrush used for brushing third-party teeth such as for nursing care, the length of the handle is preferably 8 cm or more and 12 cm or less.

  It is conceivable that the rod-shaped handle is provided with a groove that matches the shape of the finger when the handle is gripped, particularly in a portion gripped by the hand. Alternatively, as shown in FIG. 2, it is conceivable that the middle abdomen is bulged so that the hand grasping the handle is less likely to go to the upper layer than the middle abdomen of the handle. The bulge of the middle part of the handle may be configured to inflate the corresponding part of the handle for a break, or may be configured to be convex in only one direction such as a semicircular mountain shape. In addition to the bulge of the middle abdomen, it is also conceivable to have a gentle, elliptical bulge from the middle abdomen toward the tip opposite to the neck.

  The above-described configuration in which the handle is provided with a bulge or a groove can naturally induce a correct way of gripping the handle, which can be said to be a correct toothbrush posture. The correct posture that is said to be a human work is a system that is considered in consideration of the balance of forces applied to the body, and is not necessarily an easy system for humans. An easy-to-understand example is the posture while sitting on a chair. It is thought that it is best to work on the desk by stretching the back muscles and ensuring the distance from the desk, but to maintain the posture, a sense of tension between the back muscles and the abdominal muscles It is difficult to say that it is an easy posture. There is no need for a tension relationship between the back and abdominal muscles, and the posture of turning forward and rounding the back is an easy posture, and many people are unconsciously taking such a posture. However, the posture of curling forward and rounding the back takes the upper body weight only with the pelvis and spine, and as a result, it causes long-term accumulation of bone fatigue and causes symptoms such as back pain and numbness of the foot. It was. If you maintain the correct posture with your back straight, your weight will be supported using both bones and muscles, so the bone fatigue experienced by the bone will be greatly reduced, and back pain and foot numbness will not be caused. Alternatively, the time is delayed or the degree is eased. In this way, there is a correct posture that reduces the burden on the body, although it is not easy for human work. The correct posture can be considered for using the toothbrush. The gums are made of soft tissue, and if you polish them too hard, it will damage the gums and cause bacteria to propagate in the mouth, there will be a gap between the gum and tooth contact surfaces, and the top of the gums will be pushed down by the toothbrush and pushed down As a result, the gums could not support the teeth firmly, causing tooth wobbling and tooth extraction. Therefore, when brushing teeth, it can be said that it is a proper way of brushing teeth by tracing only the surface of the teeth without applying too much force. When holding the tip of the handle on the brush side or holding the index finger on the handle so that it can be pressed from above, a particularly strong force is applied to the teeth. However, when all the fingers are gripping the front end side of the middle part of the handle, a part of the force can be absorbed by the warping of the handle, so that the force applied to the teeth is alleviated.

<Description of Embodiment 1 Neck>
The “neck” is provided in a U shape from the tip of the handle. The neck has flexibility starting from the vicinity of the base of the handle. That is, the force applied when brushing teeth can be absorbed by making the neck start from the vicinity of the root of the handle.

  FIG. 3 is a diagram showing the toothbrushing with the toothbrush in the present embodiment. As shown in the drawing, the toothbrush in the present embodiment is a toothbrush for brushing both surfaces of a tooth simultaneously. However, there is a difference in size depending on teeth, and there is a difference in size of teeth depending on individuals. Therefore, it is preferable that the interval between the U-characters is configured to expand or narrow according to the size of the teeth. In this case, toothbrushing cannot be performed at the same time unless the brush portion of the toothbrush is in close contact with the tooth surface layer. The width of the U-shaped interval of the toothbrush that is not brushed is based on the thickness of the small teeth such as the front teeth, and the interval between the cylindrical rotary brushes provided at the neck tip is below the reference. To do. Then, as the teeth become larger, it is conceivable to form the U-shape using a flexible material that easily opens with a light force when brushing the U-shape.

  When the force for closing the U-shape is strong (when the material is a material having a high elastic modulus), the brush portion is crushed by the force for closing the U-shape when sandwiching a large tooth. However, it becomes impossible to adsorb dirt on the surface of the tooth using capillary action. Therefore, even if the U-shape is expanded, the neck portion is made of a flexible material that does not cause the brush to be pressed against the tooth surface by the force of closing the U-shape and crush the brush tips. It is preferable to constitute.

  Alternatively, it is possible to make a U-shaped toothbrush dedicated to the number-th to number-th teeth by specifying and setting the teeth to be brushed with the U-shaped width. For example, it may be divided into U-shaped toothbrushes such as No. 1 to No. 4 and U-shaped toothbrushes No. 5 to No. 8. Even if the size of the toothbrush is set according to the size of the tooth, the configuration of the toothbrush need not be changed from the configuration described in paragraph 0001. However, for example, in the case of a toothbrush for brushing the back teeth, unlike the toothbrush located at the center of the mouth, the handle and the neck may be configured to have an angle that is easy to brush instead of being linear. Depending on the size of the opening, it may be difficult to brush the back teeth with a toothbrush with a straight handle and neck. It will be easier, more comfortable, and will never be polished.

  The material constituting the neck may be the same material as the handle or may be a different material. Therefore, the handle and the neck may be configured by integral formation, or may be configured as an assembly type. For example, in the case where a neck having a different U-shaped opening method is prepared in accordance with the size of a tooth as described above, it is conceivable that the handle portion is commonly used so that it can be replaced and used. In addition, unlike the handle portion, the neck portion directly enters the oral cavity. Therefore, in order to maintain a sanitary state, it may be possible to dispose alcohol and disinfect with heat. In this case, use of alcohol or heat-sensitive materials such as plastics and rubbers may lead to rapid deterioration, and the surface may become rough, which may rather be unsanitary. Therefore, it is preferable that the cylindrical rotating brush portion is detachable from the neck as described later, and the neck is made of metal like a treatment instrument used in a dental clinic.

  The length of the neck is 1 cm or more and 13 cm or less. If it is for adults, it is preferable to balance so that the total length of the toothbrush including the neck and the handle is about 16 to 20 centimeters. For children, it is preferable to balance so that the total length of the toothbrush including the neck and the handle is about 6 cm to 15 cm. In the case of a toothbrush for brushing third-party teeth such as for nursing care, it is preferable to balance so that the total length of the toothbrush combined with the neck and the handle is about 10 cm or more and 16 cm or less. . The interval between the U-shaped necks is such that the cylindrical rotating brushes are overlapped with each other, that is, the distance between the cylindrical surfaces of the cylindrical rotating brushes is a negative value (about minus 3 millimeters). The interval between each other is configured to be 0 mm or more and 10 mm or less in a state where there is no gap. The thickness of the neck is 1.5 mm or more and 6 mm or less. The neck need not be configured to have the same thickness no matter where it is taken, and may be configured so that the thickness gradually decreases toward the tip. Furthermore, the handle may be folded and stored between the neck portions.

<Description of Embodiment 1 Cylindrical Rotating Brush>
The “cylindrical rotating brush” is disposed at the tip of the neck so as to be rotatable about a vertical direction with respect to a virtual plane assumed to be a U shape of the neck.

  A method is conceivable in which the cylindrical rotary brush is configured to be rotatable by passing a shaft member through the central portion. Alternatively, a method is conceivable in which the shaft is configured to be rotatable by providing a concave portion at the tip portion and fitting a convex portion provided at the U-shaped portion of the neck into the concave portion instead of passing the shaft through the whole. A recessed part may be comprised so that it may exist in the end of a cylindrical brush, and you may comprise so that it may exist in both ends. It is also conceivable that the cylindrical rotary brush is configured to rotate electrically. In this case, it can be considered that a motor serving as a power source is arranged in the handle portion and the cylindrical rotating brush is rotated by a rotating shaft extending from the motor. Therefore, it is preferable that the shaft member of the cylindrical rotating brush and the rotating shaft extending from the motor are formed of the same shaft because the configuration is simple. A flexible plastic shaft can be considered as the type of shaft. If the same shaft is not used, the shaft extending from the motor and the shaft of the cylindrical rotary brush may be connected by a gear. The motor may be configured as a precision motor so that the number of rotations can be controlled, how many rotations have been made, or the integral value of the rotation angle, the rotation speed, etc. can be measured. For example, a configuration may be considered in which a target value is set for the rotation angle, and whether the target angle has been reached is notified.

  In addition, when the electric toothbrush and the toothbrush shown in the present embodiment are used, the structure is such that the neck rotates linearly instead of the structure that directly rotates the cylindrical rotating brush. It is conceivable that the cylindrical rotating brush rotates only when it is in contact with the tongue or the like. When the opposed cylindrical rotating brushes are rotated electrically, it is preferable to rotate them so as to be reverse to each other. Further, it is preferable that the rotation direction is switched to reverse rotation every predetermined time interval (for example, about 1 to 3 seconds). Otherwise, the toothbrush will move in a certain direction in the oral cavity.

The cylindrical rotating brush can be configured by laminating disk-shaped members having brush hairs planted evenly in a perpendicular direction from a central disk-shaped core portion in the cylinder height direction.
A hole is provided in the center of the core portion of the disk-shaped member. A plurality of disk-shaped members are stacked through a straw-shaped hollow tube so that the holes overlap. On the other hand, a fixed axis perpendicular to a plane assumed to be U-shaped is provided at the tip of the neck. A fixed shaft is inserted through a hollow portion of a straw-shaped hollow tube in which a plurality of disk-shaped members are stacked. Then, a mushroom-like cap is fixed to the top of the fixed shaft so that the straw-shaped hollow tube and the plurality of disk-shaped members stacked thereon are not detached from the fixed shaft. In this way, the cylindrical rotating brush is disposed at the tip portion of the neck. In this case, the straw-shaped hollow tube and the disk-shaped member may be bonded and stacked or may be stacked without bonding. In the case of bonding, since the straw-shaped hollow tube and the brush hair are integrated, if the cap is configured to be detachable, the brush hair can be easily exchanged. Further, even if the straw-shaped hollow tube and the disk-shaped member are not bonded, the straw-shaped hollow tube is provided with a hook for pressing the disk-shaped member in the vertical direction at the upper and lower end portions of the disk-shaped member laminate of the straw-shaped member. The same effect can be obtained even if the disc-shaped member is not separated from the outer periphery.
On the other hand, the manufacturing process of this part is not limited to this, and it may be a rotating shaft instead of a fixed shaft, or it is laminated by eliminating the straw-shaped hollow tube and bonding the cores of the disk-shaped members together. It is good also as a structure.

  When the shaft member is used, the diameter of the shaft member is 2 mm or more and 4 mm or less. It is conceivable that the shaft member is made of a material such as plastic, silicon, rubber, or metal. The outer diameter of the straw-shaped hollow tube is 3 mm or more and 5 mm or less. The material constituting the straw-shaped hollow tube should not be a material having a high frictional force that hinders the rotational motion, and may be composed of plastic or metal.

  It is conceivable that the cylindrical rotating brush is configured so that the fibers constituting the brush have substantially the same length. Alternatively, the central portion can be configured to be convex, or the central portion can be configured to be concave. Or the structure of arrange | positioning a convex cylindrical toothbrush in one end of a U shape, and arrange | positioning a concave cylindrical toothbrush in the other end of U shape is also considered.

<Effects of the first embodiment>
Since the toothbrush in this embodiment can polish the surface and back surface of one tooth at the same time, the surface that can be confirmed with a mirror is carefully polished, and even on the back surface that is difficult to confirm with a mirror. It becomes possible to polish it cleanly. In addition, the time required for brushing the teeth is only the time for brushing the surface, so half the time is required. It is considered that it takes about 30 minutes to clean your teeth. In general, it is conceivable to brush teeth before going to work, returning from work, before going to school, or at lunchtime, but securing 30 minutes at each timing just for brushing It is very difficult. Therefore, in most cases, both sides were insufficiently polished, which led to deterioration of the oral environment such as periodontal disease and decayed teeth in modern people. If the toothbrush of this embodiment is used, the double sanitization effect will be acquired even if it is a half polish time, Therefore The sanitary environment in a mouth is improved dramatically.

<Overview of Embodiment 2>
In addition to the features of the first embodiment, the invention in the present embodiment is characterized in that the neck is sandwiched between the cylindrical rotating brushes by arranging independent cylindrical rotating brushes above and below the neck. Simultaneous brushing toothbrush.

<Embodiment 2 Configuration of the Invention>
The invention in this embodiment is configured such that the cylindrical rotating brush is disposed above and below the neck, respectively.

<Description of Configuration of Second Embodiment>
“The cylindrical rotating brushes are respectively disposed above and below the neck” means that two cylindrical rotating brushes are disposed above and below the neck as shown in FIG. Therefore, a total of four cylindrical rotating brushes are arranged at both ends of U. By arranging the cylindrical rotating brush above and below the neck, it is possible to prevent the neck from hitting the teeth and gums. The neck part is made of a harder material than the cylindrical rotating brush, which sometimes causes damage to the oral cavity. In this embodiment, the danger of the neck damaging the oral cavity can be eliminated by sandwiching the neck from above and below with a cylindrical rotating brush.

<Overview of Embodiment 3>
The invention in the present embodiment is a front and back simultaneous toothbrushing toothbrush having a difference in length between both ends of the U-shape of the U-shaped portion of the neck in addition to the features described in the first or second embodiment.

<Embodiment 3 Configuration of the Invention>
In the invention of this embodiment, as shown in FIG. 5, one of the necks is shorter than the other. Since the length of both ends of the U-shaped part of the neck is different, the cylindrical rotating brush installed on the shorter neck side when polishing the surface part of the tooth, which is close to the opening. When using a cylindrical rotating brush with a long neck when brushing the back part of the tooth, which is relatively far from the opening, grip the handle of the hand when brushing teeth It is possible to easily pinch both sides of the tooth without forcibly adjusting the accuracy of the hand.

  In addition to the configuration shown in FIG. 5, it is conceivable to form a relatively long neck as shown in FIGS. In this way, the neck can naturally straddle the teeth, and the back side of the teeth can be polished just by grasping the handle substantially perpendicular to the surface teeth.

<Outline of Embodiment 4>
The invention in the present embodiment is characterized in that, in addition to the features described in the second embodiment or the third embodiment subordinate to the second embodiment, the cylindrical rotary brush is a valley-shaped toothbrush that is concave toward the center. It is a toothbrush for simultaneous front and back polishing.

<Description of Configuration of Fourth Embodiment>
As shown in FIG. 7, the invention in this embodiment is configured such that the cylindrical rotating brush forms a valley shape toward the neck portion with the upper and lower cylindrical rotating brushes. In the present embodiment, the independent cylindrical rotating brush is configured to have a curve that becomes narrower toward the neck side. As a result, the shape of the brush portion formed at one end of the U-shape constituted by two upper and lower independent cylindrical rotating brushes is configured to have a valley shape with the neck portion as the bottom of the valley as a whole. . The valley type toothbrush adheres well to the swelling of the tooth surface as compared with the linear type toothbrush. Therefore, the effect of removing tooth stains by brushing is further enhanced as compared with a linear toothbrush.

<Overview of Embodiment 5>
In addition to the features described in any one of the first to fourth embodiments, the invention in the present embodiment is configured so that the U-shaped interval can be adjusted according to the size of the teeth. It is a toothbrush for polishing.

<Embodiment 5 Configuration of the Invention>
The invention in this embodiment is configured to further include an interval adjusting unit for widening or narrowing the U-shaped interval of the neck.

<Description of Configuration of Embodiment 5>
Since the size of the teeth varies from person to person or from person to person, a configuration for adjusting the U-shaped interval is required. Thus, for example, as shown in FIG. 8, a method of adjusting the U-shaped interval (see A in the figure) by arranging an interval adjustment band at the neck and changing the position of the band is conceivable. When the band is moved closer to the cylindrical rotating brush, the U-shaped interval is narrowed, and when the band is moved closer to the handle side, the U-shaped interval is increased. If the band advances too far toward the handle, there will be an obstacle when brushing teeth, and there is a risk that the band will further advance toward the handle and fall. In order to prevent the band from proceeding too far to the handle, as shown in the figure, a convex portion is provided on the neck to limit the operating area of the handle.

  The material of the band may be a material such as plastic, silicon, rubber, fiber, or metal. However, since the material is used for narrowing the neck portion, it is preferably composed of plastic or metal that does not have elasticity.

  In addition to this, a connecting member is arranged at the base of the U-shape of the toothbrush, and a half-U-shaped material obtained by equally dividing the U-shape into the left and right is connected to the connecting member and connected to the connecting member. By allowing the accuracy of the U-shaped material to be freely adjusted, a method of widening or narrowing the U-shaped interval can be considered.

  In addition to this, by using a material that has the function of maintaining the shape of the wire only at the portion where the cylindrical rotating brush is installed at the tip of the U-shape and the function of easily changing the shape, or the shape of the wire etc. A method of widening or narrowing the U-shaped interval by using a material such as flexible silicon or plastic containing a material that has a function of maintaining the shape and a function of easily changing the shape is conceivable.

  In addition to this, it is conceivable to use a coil-shaped material having a spiral shape like a coil for the U-shaped portion of the neck portion. If it is a coil-shaped material, it is possible to extend as well as bend, so it is possible to change the length and angle of the toothbrush according to the distance from the opening, whether it is the back tooth or the front tooth It becomes possible.

  Not only is it sold as a product for individuals, but it can also be used to provide services for brushing human teeth at nursing homes and medical institutions, and to promote tooth brushing for children at nurseries and elementary schools.

0101 Handle 0102 Neck 0103 Cylindrical rotating brush 0104 Virtual plane assumed in U shape of neck 0105 Vertical direction with respect to assumed virtual plane

Claims (5)

A handle,
A neck provided in a U-shape from the tip of the handle;
A cylindrical rotating brush disposed at the tip of the neck so as to be rotatable about the vertical direction with respect to a virtual plane assumed to be a U-shape of the neck;
A toothbrush for simultaneous front and back brushing of teeth.   The toothbrush for simultaneous front and back brushing of teeth according to claim 1, wherein the cylindrical rotating brush is respectively disposed above and below the neck.   The toothbrush for simultaneous front and back polishing according to claim 1 or 2, wherein one of the necks is shorter than the other.   4. The front and back simultaneous brushing toothbrush according to claim 2, wherein the cylindrical rotating brush is configured to form a valley shape toward the neck portion by upper and lower rotating toothbrushes.   The front and back simultaneous brushing toothbrush according to any one of claims 1 to 5, further comprising an interval adjusting portion for widening or narrowing the U-shaped interval of the neck.

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