JP2003265504A - Automatically advancing/retracting toothbrush - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatically advancing/retracting toothbrush which has an excellent massage effect due to a beating operation of an automatically advancing/retracting type and which is easy to affect a wiping action to a necessary entirety of an interdental part or a tooth neck. <P>SOLUTION: The automatically advancing/retracting toothbrush comprises a bristle bundle 11, a body 2 for partly or entirely forming a grip 1, and a drive mechanism 8 provided in the body 2 and coupled to the bundle 11 to automatically drive to advance or retract the bundle 11 in a longitudinal direction at the distal end of the body 2. In the toothbrush, the bundle 11 is advanced in a state in which at least bristle tips 11c are aligned in a substantially laterally straight line manner. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic advancing / retreating toothbrush, and more particularly to an automatic advancing / retreating toothbrush of the type in which bristles automatically advance / retreat in the longitudinal direction.

[0002]

2. Description of the Related Art While research is being conducted on treatment of diseases such as gingivitis and periodontitis, preservation of teeth, prevention of dental diseases, a bath method, a flossing method, a method combining them, and a massage method by hand or the like. , Etc. are actively studied and clinically tested. Journal of Oral Hygiene Journal of D
mental Health 47, 158-163 (1
977) that gingivitis and periodontitis can be prevented and treated by brushing. It is said that this is due to two effects: removal of plaque bacteria by brushing, mechanical massage of the gingiva, promotion of keratinization of the gingival epithelium, and increased gingival resistance. Has been done. Also,
Although the bath method is widely used as a cleaning method for patients with periodontal disease, dental floss is used as an auxiliary cleaning tool for cleaning the interdental part where it is difficult to remove plaque. On the other hand, we developed a unique cleaning method called the "toothpick method",
When this is used in combination with the bass method and flossing method,
Comparing the effects on periodontitis, especially the massage effect, the toothpick method is clinically and cytologically superior to the case of using the bath method and the flossing method together. Such points have been announced.

In any case, tooth brushing is a very tiring work because it requires a long period of time for each treatment. Among them, the "toothpick method" applies a wide brush surface to the teeth in a row and presses the whole, so that each of the bristles that make up the brush surface hits the tooth surface and is pushed and bent so that it enters all the way between the teeth. Since the work to be performed is repeatedly performed by the piston movement, it is a difficult work that requires a strong force.

On the other hand, there is provided an electric toothbrush that automatically reciprocates the toothbrush in parallel to the surface where the bristles are lined up. This is suitable for the bass method regardless of whether the brush surface is moved in the longitudinal direction of the tooth or in the direction perpendicular to the tooth.

Further, Japanese Patent Publication No. 60-26535 and Japanese Patent Laid-Open No. 8-322823 disclose automatic advance / retreat toothbrushes for advancing / retreating in the longitudinal direction of the bristles using a brush or a bristles bundle. In such toothbrushes, the bristles automatically advance and retreat in the longitudinal direction, so the bristles bundles often penetrate not only between the teeth but also in the gingival sulcus around the roots of the teeth to poke and remove plaque and foreign matter in the details. You can massage.

[0006]

[Problems to be Solved by the Invention] However, the "toothpick method" is difficult to learn because it is difficult to work, and it is difficult to last long. An electric toothbrush that reciprocates a toothbrush in parallel to the brush surface is not suitable for the “toothpick method”. Tokusho Sho 6
The one disclosed in the publication 0-26535 reciprocates the toothbrush in the longitudinal direction of the bristles, but since the toothbrush is of the type that forms a wide brush surface, the resistance to insert it between the teeth is high. Large electric reciprocating movement is impossible. Even if the pushing force is strengthened and forced into the space between the teeth, the reaction force is large and it is difficult to push because it is tired to resist it. In the one disclosed in Japanese Patent Laid-Open No. 8-322823, since the bristle bundle is advanced and retracted in the longitudinal direction, it can be easily and repeatedly entered into the periodontal groove and between the teeth, and it is easy to give stimulation by a pinpoint beat action. , "Toothpick method" can be automated and the difficulty of the work can be solved, but the massage effect is still weak because the action area is very small, and it exerts a cleaning action and a massage action on the entire necessary area between the teeth and gums. It is difficult and takes time to work.

Based on such new knowledge, the object of the present invention is to provide an excellent massage effect by the beat action of the automatic advance / retreat system, and to easily exert a cleaning action on the entire required area of the gum such as interdental space and periodontal pocket. To provide a retractable toothbrush.

[0008]

In order to achieve the above object, an automatic advancing / retreating toothbrush according to the present invention is provided with a bristle bundle, a main body part or a part of which grips, and a main body part provided in the main body part. A bristle bundle and a drive mechanism for automatically driving the bristle bundle forward and backward in the longitudinal direction at the tip of the main body,
The bristle bundle is mainly characterized in that at least the tips of the bristles are advanced in a bundle shape such as a single horizontal letter, a circle, an ellipse, or the like.

In such a structure, the bristle bundle is driven forward and backward in the longitudinal direction by the drive mechanism at the tip of the main body portion, so that the body portion is gripped by the grip and the bristle bundle portion at the tip of the main body portion is placed in the oral cavity. When you put it on the teeth, gums, spaces between teeth, and periodontal groove, the tips of the hairs that move forward and backward repeatedly touch or enter,
Cleaning by the so-called "toothpick method" can be performed automatically at high speed. In this case, unlike the conventional method in which the brush surface is pressed slowly, the abutting in this case is to automatically perform high-speed stimulating massage by the beat action according to the bundling form and its size. The effect of massaging one bristle bundle is higher than that of the method. In particular, when the tips of the bristles are arranged almost in a single horizontal line, there is a wider range of tips of the bristles and the bristles of the bristles are wider than in the case of the conventional bristle bundle, without the attenuation of irritation when the tips of the bristles form a surface. Since it is possible to increase the number of brushes, it is easier to exert a stronger cleaning action with a wider action width corresponding to the width of the tips on the spaces between teeth, gums, periodontal groove, etc. compared to the conventional bristles, so it is easier to remove plaque etc. In addition, the massage effect, beat effect, and work efficiency are improved, and effective cleaning including the "toothpick method" is efficiently and easily achieved in a short time.

In particular, in a further structure in which the bristles have a thickness of about 0.1 to 0.3 mm and are converted into a circular shape with a bristles having a diameter of about 5 mm. The range can be enlarged, and the work efficiency can be improved and the work time can be shortened.

The automatic advancing / retreating toothbrush according to the present invention also includes a bristles bundle, a main body part or a whole of which grips, and is provided in the main body part to be connected to or opposed to the bristles bundle. The bristle bundle has a thickness of 0.1 to 0.
Another feature is that bristles having a diameter of about 3 mm are made to advance in a bundle shape of a substantially circular or elliptical shape having a diameter of 1 to 5 mm.

In such a structure, the elasticity of each of the bristles is taken advantage of and the appropriate elasticity is obtained.
The smaller the diameter is about 2.5 mm, the more effective it is to clean plaque and other plaque in narrow spaces such as periodontal pockets and teeth. , The larger the diameter is in the range of 3.5 to 5 mm, the larger the brush surface becomes, and the larger the range in which the beat effect can be exerted at the same time without the beat effect being reduced, thereby improving the beat efficiency and working time. Can be shortened.

The bristle bundle has approximately 2 hairs each having a thickness of about 0.1 mm.
A further configuration in which a bundle of about 00 pieces is used is suitable for obtaining a bundle of one horizontal character and a circular or elliptical shape of about 5 mm.

In a further arrangement, the bristle tufts are advanced and retracted with their bristle tips positioned at a right angle or inclined to the axis of the body, in a further arrangement the bristle tufts in the axial tip of the body are generally of the body. It is taken in and out in the oral cavity in the axial direction, but depending on the direction and position of the axis, the bristles bundle inserted in the oral cavity can be positioned at any position on the outer side and the inner side of the gums and the tooth arrangement. Depending on the right angle or inclined direction of the bristles bundle with respect to the axis of the main body part, the tips can be directed almost upright to the inner and outer surfaces of each tooth, the inner and outer surfaces of the gums, the periodontal groove, and the interdental tooth, and the effective beat The brushing action of the method can be applied to the tooth, gums, periodontal groove, and any portion between the teeth almost evenly.

In a further configuration in which the bristle bundle is guided by a hollow guide portion extending from the main body portion so that the bristle tips have a predetermined bundle shape and is moved back and forth, in a further configuration, the bristle bundle itself connected to the drive mechanism. If it is a bundle of necessary volume, it will be advanced and retracted by the guide of the hollow guide so that the hair tips will be in a shape of approximately one horizontal letter, or will be restrained so that it will be a required bundle shape, so it can be planted or molded in a predetermined shape. There is no need to do it, which helps reduce the cost of the bristles. Moreover, even if the tip of the bristles is thinly spread out in the shape of a single horizontal letter or the diameter is reduced to about 1 to 2.5 mm, the guidance of the hollow guide prevents the waist from becoming weak, and especially the waist. Even if it is not strong bristles, the beat effect will not be impaired.

The bristle bundle has a guide entrance / exit dimension of about 10 to 12 mm and an advance / retreat distance of about 4 to 6 mm.
A further configuration provides a subtle elasticity and waist strength that has a high beat effect and does not cause excessive stimulation.

A further construction, in which the bristle bundle is nylon or polyester, is suitable for obtaining a subtle elasticity and waist strength that has a high beat effect and does not cause excessive stimulation.

In a further structure in which the main body portion is provided with a liquid supply passage for supplying the cleaning liquid to the hollow guide portion, the cleaning liquid can be directly supplied to the portion where the bristles are working, so that cleaning can be performed with a small amount of cleaning liquid. Can increase the effect,
Disinfection can also be performed depending on the type of supply liquid.

When the bristle bundle extends from the main body portion or is connected to the tip of the drive shaft facing the end portion, there is no cover around the drive shaft portion and the bristle bundle from the main body portion, and the bristle bundle is not bulky. Therefore, it is easy to handle and easy to use.

The drive shaft is reciprocally swung about a swinging fulcrum of the main body, and has a bending portion that orients the bristles bundle in a direction in which the longitudinal direction is substantially the same as the swinging direction. In a further configuration, since the drive shaft extending from the main body directly supports the bristles and advances and retracts in the longitudinal direction, the structure is low,
Depending on the direction and position of the axis of the main body and the drive shaft, it is easier to position the bristles bundle inserted in the oral cavity at any position outside and inside the gums and the row of teeth. The right or slanted orientation of the bundle makes it easier to orient the tips of the bristles approximately upright against the inner and outer surfaces of each tooth, the inner and outer surfaces of the gums, the periodontal groove, and the spaces between the teeth.

In a further configuration in which the main body portion and the drive shaft are provided with a liquid supply path for supplying the bristles bundle with the cleaning liquid, the cleaning liquid can be directly supplied to the portion where the bristle bundle is working, so that a small amount of cleaning liquid is required. The cleaning effect can be increased,
Disinfection can also be performed depending on the type of supply liquid.

In a further configuration in which the main body portion is provided with a liquid supply mechanism for supplying the cleaning liquid to the liquid supply passage, an internal or external liquid supply source is used for liquid supply without a special external mechanism. A cleaning liquid can be supplied.

The bristle bundle is detachably connected to the advancing / retreating motion section of the drive mechanism. In a further configuration, the bristle bundle can be moved back and forth up to about 10,000 times per minute as needed, Although it wears relatively early, it can be used while being replaced with a new one by the attachment and detachment. However, even a bristle bundle with concentrated bristles at one point has the advantage that it can be easily made to act intensively on the details, such as the periodontal groove and the gap between teeth, so the attachment / detachment structure for different bristle bundles and drive mechanism is common. It is also possible to selectively use these different types of bristles.

The connection is performed by attracting a magnet or fitting an elastic portion. In a further structure, there is an advantage that the structure can be attached and detached with a simple structure and operation.

In a further structure in which the bristle bundle is provided so as to be driven by the advancing / retreating motion portion of the drive mechanism and detachable, it is not necessary to have an attaching / detaching portion with the drive mechanism side on the bristle bundle side, and the structure and Replacing the bristles becomes even easier.

An elastic member made of a spring, rubber, or resin is interposed in the advancing / retreating motion transmission system between the advancing / retreating motion part of the drive mechanism and the bristles. In a further configuration, the elastic member is adapted to its type. Since the forward movement of the drive mechanism side is transmitted to the bristle bundle side by its elastic characteristics, it does not substantially affect the forward movement speed of the bristle bundle, but it softens the impact when it comes into contact with the teeth or gums, so it reciprocates. It is possible to increase the operating speed, cycle, and stroke to prevent excessive stimulation while obtaining sufficient cleaning and beat effects, and it is possible to prevent the bristle bundles from being unnecessarily worn.

The forward / backward movement part of the drive mechanism is provided on the main body side by being covered with the outside and a seal member. In a further configuration,
Further objects and features of the present invention will become apparent from the detailed description that follows and the description of the accompanying drawings.
The respective features of the present invention can be employed alone or in combination in various combinations within a possible range.

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an automatic advancing / retreating toothbrush according to an embodiment of the present invention will be described in detail with some examples with reference to the drawings, for the understanding of the present invention.

In this embodiment, as shown in FIGS. 1 to 10, a bristle bundle 11 and a main body 2 which partially or wholly forms a grip 1, and a bristles bundle 1 provided in the main body 2
1 and a drive mechanism 8 for automatically driving the bristle bundle 11 forward and backward in the longitudinal direction at the tip of the body portion 2.
In No. 1, at least the bristle tips 11c are arranged so as to line up in the form of a substantially horizontal character. In this way, the bristle bundle 1
Since 1 is driven forward and backward in the longitudinal direction by the drive mechanism 8 at the tip of the main body 2, the main body 2 is gripped by the grip 1 and the portion of the bristle bundle 11 at the tip of the main body 2 is put in the oral cavity. As shown by arrows in FIG. 11, teeth 201, gums 202, interdental 2
03, when applied to the periodontal groove 204, the bristles 11c that are advanced and retracted in the direction A repeatedly strike or enter, and the brush surface is pressed slowly. The exciting massage can be automatically performed at high speed. In particular, the tip 11c
Are arranged in a bundle form of approximately one horizontal letter, and the array area of the tips 11c is wider and the number of bristles 11b is larger than that in the case of the conventional bristle bundle without attenuation of irritation in the case where the tips form a surface. Since it can be increased, it is easy to exert a stronger brushing action with a wide action width corresponding to the width of the tips of the teeth 203, gums 202, periodontal groove 204, etc., as compared with the conventional bristle bundle, so a massage effect or a beat effect, In addition, the work efficiency is improved, and effective cleaning including the “toothpick method” is efficiently and easily achieved in a short time.

In the present embodiment, the bristle tufts 11 are positioned such that the tips 11c of the bristle tufts 11 are at right angles or inclined with respect to the axis of the main body 2 as shown in FIGS. 1, 2, and 4-8. I am trying to move forward and backward. The bristle bundles 11 at the tip of the main body 2 in the axial direction are inserted into and taken out of the oral cavity in the axial direction of the main body 2, and the bristle bundles 11 inserted in the oral cavity are taken into account depending on the direction and position of the axial line. 202 and teeth 20
The bristles 11c can be located at any position on the outer side and the inner side in the arrangement of 1 depending on the right angle or inclined direction of the bristle bundle 11 with respect to the axis of the main body 2.
The inner and outer surfaces of each tooth 201, the inner and outer surfaces of the gum 202, and the periodontal groove 2
04, it can be almost upright with respect to the tooth gap 203,
The effective cleaning action of the beat method is tooth 201, gum 2
02, periodontal groove 204, and interdental 205.

In particular, in the example shown in FIGS. 1 to 6, the bristle bundle 11
Is guided by the hollow guide portion 104 extending from the main body portion 2 so that the bristle tip 11c is formed into a shape of substantially one horizontal letter and is moved back and forth. As a result, if the bristles 11 themselves connected to the drive mechanism 8 have a necessary volume, the bristle tips 11c are guided by the hollow guide portion 104 so that the bristle tips 11c are formed in a single horizontal line.
~ As shown in Fig. 4 and changed to 90 ° in Fig. 5 to Fig. 8 to be expanded and retracted in a fan shape as shown by an imaginary line, there is no need to plant or mold into a predetermined form, and the bristles Useful for reducing the cost of the bundle 11. In addition, the bristle bundle 11 is thinly spread out in a shape of one letter in a horizontal direction, but the guide of the hollow guide portion 104 prevents weakening of the waist, and the beat effect is impaired even if the bristle is not particularly strong. Never.

The bristles 11 have a set of bristles 11b protruding from the base 11a, and the forward / backward movement part 23 of the drive mechanism 8 is described.
On the other hand, the base 11a is magnetically coupled in the advancing / retreating direction A by the magnetic attraction of the magnetic coupler 25 so as to be detachably connected. As described above, when the bristles bundle 11 is connected to the drive mechanism 8 by magnetic attraction by the magnetic coupler 25, the magnetic attraction force can be obtained by bending or twisting both sides of the magnetic coupler 25 as a boundary. The bristle bundle 11 can be easily replaced even if the bristle bundle 11 is worn, which is convenient for repeated use over a long period of time because it can be easily overcome and separated to release the connection. On the other hand, the magnetic coupling of the magnetic coupler 25 is oriented in the advancing / retreating direction A of the bristle bundle 11 so that the separating force due to inertia when the bristle bundle 11 is driven back and forth is most likely to be resisted. 1
Due to the small mass on the one side and the small inertial force from the driving side, the connection cannot be disconnected even by the forward / backward driving of about 10,000 times per minute. Therefore, the bristle bundle 11 is
It is possible to surely and effectively work on the teeth, the interdental spaces, the gums, the gingival sulcus, etc., which are advanced and retracted in the longitudinal direction at the tip of the position, and are gripped and pressed by the grip 1 of the main body 2.

However, connection and attachment / detachment are not essential, and the bristle bundle 11 may be an attachment / detachment portion that is attached / detached to / from the advancing / retreating operation portion 23 of the drive mechanism 8. As described above, the bristles 11 can be moved up and down about 10,000 times a minute as required and can be operated, and they will wear relatively quickly, so if you can attach and detach them, continue to use the body 2 while replacing them with new ones. To be However, the previously proposed bristle bundle having a concentrated bristle tip at one point has the advantage that it is easy to intensively act on the detail portion such as the periodontal groove 204 and the interdental 203 with a small gap. The attachment / detachment structure of the bundle 11 and the drive mechanism 8 is common, and the bristles bundle 11 of different types
You can use differently.

The structure which is not connected is, for example, in the example shown in FIGS. 1 to 4, the connecting structure between the bristles 11 and the driving mechanism 8 is omitted and the bristles 11 are urged toward the driving mechanism 8 by a spring or the like. Alternatively, the forward / backward movement unit 23 may be repeatedly responsive directly or via an elastic body such as a spring, rubber or resin. This eliminates the need for a connection structure and facilitates cleaning and replacement of the bristles 11.

In the magnetic coupler 25, for example, as shown in FIG. 4, FIG. 6 to FIG. 8 and FIG.
The magnetic coupling surface 102 of each other such as facing the pole and the N pole.
When a magnetic circuit is formed between a and 103a, the magnetic attraction force is strong and the mass on the bristle bundle 11 side is further increased.
Withstands further speeding up / down movement. Magnetic coupler 2
5, the magnetic coupling surfaces 102a and 103a are shown in FIGS.
Although it may be a flat surface as shown in FIG. 0, it is also possible to prevent positional displacement in the unlikely event that the axes of the uneven surfaces such as shown in FIGS. You can

The bristle bundle 11 can be configured to be advanced and retracted by being guided by the hollow guide portion 104 extending from the main body portion 2 as in the example shown in FIGS. As shown in FIG. 3, even if the tips of hair are long and loose, they are not bundled and buckled, so plaque and foreign matter can be removed by the beating action, the massage effect can be enhanced, and the forward / backward movement path is also shown. 5, the straight line as shown in FIGS. 6 and 10 and the curved line as shown in FIG.
This is convenient because it can be freely set depending on the presence or absence of 04 and its shape. When the tip end portion 12 of the hollow guide portion 104 is inclined with respect to the axis of the main body portion 2 as in the case shown in FIGS. 1 to 6, the forward and backward directions of the bristles 11 are guided in the inclined direction. It becomes easier to work on the back side of.

In the example shown in FIGS. 1 to 6, the main body portion 2 is provided with a liquid supply passage 34 for supplying the cleaning liquid 3 to the hollow guide portion 104. As a result, the cleaning liquid 3 can be accurately delivered to the portion where the hollow guide portion 104 guides and operates the bristles 11, and the effect of removing dental plaque and foreign matter can be enhanced with a small amount of cleaning liquid 3. Depending on the type of liquid used, disinfection is also possible. Tip portion 1 of the hollow guide portion 104
2 is the base 12 at a position where the magnetic coupler 25 is exposed.
It has an attachment / detachment portion 32 with respect to the a side. As a result, the bristle bundle 11 and the connecting portion of the bristle bundle 11 with the driving side thereof by the magnetic coupler 25 are exposed by removing the tip portion 12, so that the magnetic coupling of the magnetic coupler 25 is released as described above.
The bristle bundle 11 can be easily replaced even if the guide structure by the hollow guide portion 104 is adopted.

Here, when the tip portion 12 side from which the attaching / detaching portion 32 is removed and the base portion 12a side are folded at the attaching / detaching portion 32 with the bristle bundle 11 being housed inside the tip portion 12,
Both sides of the bristle bundle 11 and the advancing / retreating motion part 23 inside of them, which are separated by the magnetic coupler 25, can be folded accordingly, and the magnetic coupling by the magnetic coupler 25 can be released, and the removed tip part 12 When the bristle bundle 11 inside is taken out and replaced, and the tip portion 12 is connected to the base portion 12a again, the magnetic body 102 and the magnet 103 of the magnetic coupler 25 face each other, and the magnetic coupling state is automatically established. Therefore, it is not necessary to specially perform the magnetic coupling by the magnetic coupler 25 and the release thereof.

The example shown in FIGS. 1 to 4 will be described in detail. As shown in FIGS. 1 (a) and 1 (b), a cleaning liquid tank for storing a cleaning liquid 3 in a main body part 2 of which a part is a grip 1. 4, a pump 5 for manually discharging the cleaning liquid 3 in the cleaning liquid tank 4, a battery chamber 6, and a drive mechanism 8 that is operated by power supply from a battery 7 mounted in the battery chamber 6 and these are built-in, and the main body A hollow guide portion 104 extending forward from the tip end side portion provided with the drive mechanism 8 of the portion 2 guides the bristles 11 made of bristles 11b made of a suitable synthetic resin filament such as nylon so as to move in and out in the longitudinal direction. ,
Further, the tip portion 12 for pouring out the cleaning liquid 3 discharged by the pump 5 is provided, and the base 11a is connected to the drive mechanism 8 by the magnetic coupler 25 so that the bristles bundle 11 can be moved forward and backward in the longitudinal direction thereof.

Both the main body 2 and the hollow guide 104 are made of hard synthetic resin, and a cap 13 is provided at the tail end of the main body 2 for opening and closing the battery chamber 6 so that the battery 7 can be attached / detached / replaced. It is provided. The cap 13 is the protrusion 13
A is fitted in the L-shaped groove 20 on the cap fitting surface of the main body 2 while being fitted in the axial direction and then rotated by a predetermined amount so as to be prevented from coming off in the L-shaped groove 20. ing. A battery 7 is provided on the bottom of the cap 13 as a positive electrode 1.
It has a spring 14 for pressing to 0, and a minus electrode 15 is connected to the spring 14, and the plus electrode 10 and the minus electrode 15 are connected to a motor 16 for driving the drive mechanism 8 via a switch 17 and a switch 17 Operation member 1
The ON / OFF operation is performed by means of 8, so that the motor 16 can be driven and stopped. The minus electrode 15 is connected at least at the separation boundary portion between the cap 13 and the main body portion 2 when the cap 13 is at the rotation preventing position of the cap 13.

The cleaning liquid tank 4 is provided integrally with the main body 2 between the battery chamber 6 and the drive mechanism 8. The liquid supply port can be opened and closed by the screw lid 19 provided on the side periphery of the main body 2. It can be sealed by a seal packing 21 by 19. The drive mechanism 8 is a crank mechanism that is directly connected to the main body 2 and to a motor 16 whose axis extends in a direction perpendicular to the axis of the main body 2. The drive mechanism 8 directly connects the disk 22 to the motor shaft 16a,
The eccentric position of the disk 22 and the advancing / retreating motion part 23 arranged in parallel with the axis of the body part 2 are connected by a link 24, and the bristle bundle 11 is connected to the advancing / retreating motion part 23 by a magnetic coupler 25 so as to be detachable. ing.

As shown in FIG. 3, the magnetic coupler 25 magnetically attracts the magnetic substance 102 on the side of the bristles 11 to the magnet 103 provided at the tip of the advancing / retreating motion unit 23, and a magnetic circuit is provided between the two. The magnet 103 is a permanent magnet 1 so as to form
The magnetic substance 103b is stuck on both sides of 03c so that it has an S pole and an N pole on both left and right sides. It is preferable that both do not rust, both the magnetic bodies 102 and 103b are made of stainless steel, and the permanent magnet 103c is made of ferrite. However, if the resin mold 100 or plating is applied to the surfaces of the surfaces within a range where the magnetic attraction does not become weak, the appearance can be kept clean and the influence on the human body due to the change of the material and the state in case of emergency can be eliminated. The magnetic coupler 25 may be of a magnetic coupling type in which magnets attract each other.

The attaching / detaching portion 32 is formed by fitting the leading end portion 12 side of the hollow guide portion 104 and the main body portion 2 side with each other, and elastically engaging the concave ridges 12c and the convex ridges 12d provided on the hollow cage fitting portion. Yes, but it is reasonably stable in the connected state. The specific structure of the connecting structure and the retaining structure of these attaching / detaching parts 25 and 32 can be variously changed in design.

The manual pump 5 is provided with a rubber pressure cap 33 on the side peripheral surface of the main body 2 shown in FIGS. 1 and 2 at the portion directly opposite to the portion where the motor 16 of the drive mechanism 8 is provided. A pressurizing chamber 33a is formed between the pressurizing cap 33 and the main body 2, and the pressurizing cap 33 has an intake port 3 with a check valve.
3c is provided, and the main body 2 has a discharge port 33b with a check valve.
Is provided, and an air supply pipe 33d reaching the bottom of the cleaning liquid tank 4 is connected to the discharge port 33b. Further, a liquid supply path 34 made of a flexible pipe made of a synthetic resin that reaches the hollow guide portion 104 from the cleaning liquid tank 4 is provided, and the cleaning liquid 3 that is pressurized and pushed out by the air supply from the pump 5 is inside the hollow guide portion 104. Guide to the hollow guide 1
04 and the bristles 11 and between the bristles 11b, and flows out between the bristles 11b and the bristles 11b.
Are to be supplied. The supply of the cleaning liquid 3 can be performed by manual operation of the pump 5 at any time as needed, and without this, brushing and massaging can be performed by the bristles 11b.

In this example, even if the pressure in the cleaning liquid tank 4 fluctuates at a part of the liquid supply passage 34 or the connection port with the cleaning liquid tank 4, the flow rate and the flow velocity flowing out to the liquid supply passage 34 become constant. A pressure regulating valve 35 for doing so is provided, and an opening / closing valve 36 for letting out the wash liquid in a pressure-controlled state as necessary or stopping the outflow is also provided.

In this example, the operating member 18 for turning the motor 16 on and off is provided with the operating arm 18a for the drive mechanism 8 and the operating arm 18b for the on-off valve 36 as shown in FIG. 2 (b),
When the motor 16 shown by the solid line in FIG. 3 is in the off state, the operation arm 18a moves to the hook-shaped portion 18 as shown in FIG.
a1 is hooked on the connecting portion 24a of the link 24 with the disc 22 and attracts it to the cleaning liquid tank 4 side, and the drive mechanism 8 is forcibly restored to the state in which the bristle bundle 11 is pulled into the hollow guide portion 104 and stored. Let it stabilize. Further, the operation arm 18b closes the open / close valve 36. When the operating member 18 is in the state of turning on the motor 16 shown by the phantom line in FIGS. 2A and 3, the operating arm 18a is the hook-shaped portion 1.
8a1 is located outside the revolving locus of the connecting portion 24a of the link 24 on the disk 22 so that it does not interfere with the operation of the drive mechanism 8 and the operating arm 18b opens the open / close valve 36. .

However, the pressure regulating valve 35 and the opening / closing valve 36 are not essential, and the interlocking structure with the drive mechanism 8 and the opening / closing valve 36 by the operating member 18 is not essential.

In this example as described above, the grip 1 holds the main body 2, and the tip 12 of the hollow guide portion 104 extending to one end side of the main body 2 is inserted into the oral cavity to remove teeth and gums. The tip portion 12 of the hollow guide portion 104 is provided at every portion.
The bristles 11b that move in and out can be applied to brush and massage teeth. A cleaning liquid tank 4 for storing the cleaning liquid 3 necessary for brushing and massaging the main body 2, a pump 5 for manually discharging the cleaning liquid 3 in the cleaning liquid tank 4, a battery chamber 6, and the battery chamber 6 are mounted. Since it is equipped with all of the drive mechanism 8 that operates by the power supply from the battery 7, it is smaller and more handy than a conventional one that can be used only when connected to a stationary body. It's easy to do.

Moreover, the cleaning liquid 3 may be used in a discharged state at a flow rate as needed by operating the pump 5 as needed, and the cleaning liquid 3 is also used for brushing or massaging the bristles 11 by reciprocating motion. However, since the cleaning liquid 3 needs to be supplementarily supplied to the extent that the cleaning is satisfied, for example, to the extent that the cleaning liquid 3 is dropped, the required amount of the cleaning liquid 3 is significantly smaller than that of the conventional one using the pulsating flow of water, The cleaning solution 3 in the small cleaning solution tank 4 provided in the small body 2 can sufficiently complete one brushing and massaging, and even when a chemical solution other than water is used for the cleaning solution 3, it is not too expensive. According to the experiments by the present inventors, the cleaning liquid 3 may be supplied at about 2 drops per second, and the cleaning liquid 3 of 50 cc can be continuously used for 5 times.
It was possible to wash for a minute, and it was possible to achieve a sufficient brushing effect.

Further, in this example, as shown in FIG. 2A, the tip portion 12 of the hollow guide portion 104 is inclined so as to be inclined approximately 120 ° with respect to the axis of the main body portion 2 through the curved portion 12b. It is bent from the 12a side. This 120
Due to the inclination of °, the distal end portion 12 of the hollow guide portion 104 is positioned at any portion around the teeth in the oral cavity while holding the main body portion 2 in the posture in which the hollow guide portion 104 is directed upward. Since the bristles 11 are longitudinally opposed to each other in the circumferential groove 204 or the deepened pocket, it is not necessary to complicatedly operate the orientation of the main body 2 to clean or massage each part. Easy and main body 2
Since the bottom portion of the cleaning liquid tank 4 installed in is always facing downward, the cleaning liquid 3 at the bottom can be easily discharged by the pump 5, so that the remaining amount can be minimized. The hollow guide portion 104 has a small inner diameter with a circular cross-section from the base portion 12a side toward the tip portion 12 side with a sufficient margin with respect to the thickness of the bristle bundle 11; The bristle bundle 11 is guided by a tapered guide path that is reduced to a size where it disappears, and the bristle tip 11c of the bristle bundle 11 is substantially horizontal because the guide path gradually flattens from the bent portion of the tip 12 to the tip. It is in the form of a single letter so that it can be moved back and forth.

In one embodiment, the bristles 11 are made of resin filaments having a diameter of about 0.3 mm.
Using b bundles of 30 b, the tip opening 12g of the tip portion 12 of the hollow guide portion 104 is formed into a slit shape having a width of 1 mm and a length of 5 mm, and the bristles bundle 11 has the tip opening 12g.
It is tied in a tight state with almost no space between and, and the hair tips 11c are lined up in a horizontal line with a thickness of about 1 mm over about 5 mm, and a state in which the hair is pushed back and forth strongly is obtained. Got

Further, since the drive mechanism 8 is the crank mechanism connected to the motor shaft 16a and the reciprocating motion of the predetermined stroke can be achieved quickly and accurately with a simple mechanism, the tooth brushing effect and the massage effect can be achieved. It is possible to improve and avoid the inconvenience of causing excessive stroke and damaging the teeth and gum due to the forced reciprocating motion.

Particularly, since the rotation axis X of the crank portion 8a of the drive mechanism 8 is installed in a direction perpendicular to the axial direction of the main body portion 2, the axial direction of the main body portion 2 and the hollow guide portion 104 is increased. A reciprocating motion stroke is obtained, and by transmitting this to the bristles bundle 11 through the axially moving part 23, the hollow guide part 104 to the part of the main body part 2 equipped with the drive mechanism 8 are 2 (a)
The hollow guide part 10 is made thin and long as shown in
It is possible to easily insert and move the tip portion 12 of No. 4 into each portion in the oral cavity, and it is easy to brush and massage the teeth. In this embodiment, the forward / backward stroke of the bristles 11 in the longitudinal direction is set to 6 mm. With such a large stroke, the surface of the tooth 201 and the tooth gap 20
The toothbrushing effect of No. 3 and the massage effect on the gum 202 can be sufficiently obtained. However, in order to further increase the brushing effect by increasing the stroke into the inter-tooth space 203,
The size can be made larger, such as about 2 mm. On the contrary, it is also possible to aim at a massage effect and make a small stroke of about 2 mm to reduce the escape and perform a beat action at high speed.

Furthermore, the manual pump 5 itself is exposed on the side peripheral surface of the main body 2 and is pressed.
Including the case of having the pressing operation part exposed in this way, while holding the main body part 2 with one hand, apply the pressing operation by applying the thumb of this one hand to the pressing operation part, and if necessary, while brushing or massaging teeth. The cleaning liquid 3 can be discharged from the cleaning liquid tank 4 and used without difficulty. However, when the pressure regulating valve 35 and the on-off valve 36 are provided as in the first embodiment, the pump 5 is operated to pressurize the cleaning liquid 3 in the cleaning liquid tank 4 in advance even when the electric toothbrush is not used. In addition, in using the electric toothbrush, the opening / closing valve 36 is opened without operating the pump 5, so that the cleaning liquid 3 can be discharged under a constant pressure and flow rate. Therefore, in some cases, the cleaning liquid 3 can be discharged and used as needed by manually opening and closing the opening / closing valve 36 regardless of the operation of the drive mechanism 8.

Further, as in the present embodiment, the opening / closing valve 36
However, the operating member 18 for turning the drive mechanism 8 on and off,
When opening and closing in conjunction with the off operation, the cleaning liquid tank 4
The cleaning liquid 3 stored under pressure inside the bristle bundle 11
The cleaning liquid 3 can be automatically discharged and used in conjunction with the brushing and massaging by moving the cleaning liquid in the longitudinal direction, and no special operation for discharging the cleaning liquid 3 is required. It is convenient for

When the drive mechanism 8 is stopped as described above, the bristles 11 are restored to the position where they are stored in the hollow guide portion 104.
Since 1b is prevented from coming into contact with other objects when not in use, it avoids being inadvertently damaged by being in contact with other objects when it is not in use and has a long life. Can be

Further, the bristles 11 are connected to each other via a buffer tube 138 made of rubber or synthetic resin for connecting the magnetic body 102 to the base body 11a in which the bristles 11b are planted.
The forward / backward movement of the forward / backward movement unit 23 causes the bristles bundle 11 to have a buffer tube 138.
It is transmitted via software. This softens the function of the bristles 11. The buffer cylinder 138 can be replaced with a coil spring or can be used together.

In the example shown in FIGS. 5 and 6, the bristle bundle 11 is housed together with the advancing / retreating operation portion 23 of the drive mechanism 8 on the tip opening 12g side of the bent portion of the tip portion 12 of the hollow guide portion 104 from the base portion 12a. The drive is made to move back and forth from a position very close to the tip opening 12g. In particular,
The rotation axis X of the crank portion 8a of the drive mechanism 8 is installed so as to match the axial direction of the main body portion 2. Along with this, the motor shaft or the connecting shaft 51 oriented in the axial direction of the main body portion 2 is lengthened so that the crank portion 8a located on the base portion 12a of the hollow guide portion 104 is largely separated from the motor 16 of the main body portion 2.
5 to drive the tip 12 as shown in FIG. 5 and FIG.
Bristles bundle 1 from a position closer to
1 is moved forward / backward through the forward / backward movement unit 23. As a result, the bristle tufts 11 can be made extremely short as compared with the case of the example shown in FIGS. 1 to 4, and the waist becomes stronger, so that the tip 12 guides and the tips 11c become stronger and stronger. Tooth 201, gum 202, interdental 203,
The cleaning effect and the beat effect can be enhanced by acting on the periodontal groove 204 and the like. Further, the bristle bundle 11 can be shortened and the weight can be reduced, and the cost can be reduced.

The magnetic body 102 of the magnetic coupler 25 is replaced by the bristle bundle 1
1 is separately connected to a base body 11a made of synthetic resin or rubber, and the base body 11a is made of synthetic resin or the like so as to be convenient for planting bristles 11b. The magnet 103 is a horseshoe-shaped permanent magnet as shown in FIG. Magnetic substance 10 with pole and N pole
The two are opposed to each other so that a magnetic circuit can be formed between them.

In the crank portion 8a of this example, the crank pin 52 on the disk 22 is oriented such that the rotation axis X coincides with the axis of the main body 2, and the movement of the crank pin 52 is inclined about 120 ° with respect to the axis of the main body 2. As shown in FIG. 6 (b), in order to connect the advancing / retreating motion part 23 that is transmitted to the bristle bundle 11 guided to the tip part 12, it is integrally provided at the tip of the crank pin 52 and the rear end of the magnet 103. A spherical universal joint in which spherical parts 52a, 123a and bowl-shaped parts 23a, 23b integrally formed with the synthetic resin advancing / retreating motion part 23 are fitted is used, and the bristles are moved through the advancing / retreating motion part 23 by the rotation of the disk 22. When the bundle 11 is reciprocated, there is no problem even if the posture of the bristles 11 changes variously.

The attaching / detaching portion 32 of the main body portion 2 is provided between the tip portion 12 and the base portion 12a of the hollow guide portion 104, and the magnetic coupler 25 between the base 11a of the bristle bundle 11 and the advancing / retreating operation portion 23 is the above-mentioned. The position corresponds to the attachment / detachment portion 32.

Further, in this example, in order to restore the drive mechanism 8, the crank 53 is formed in the middle of the connecting shaft 51, while the operation arm 18c interlocking with the operation member 18 for turning the motor 16 on and off is employed. Then, while the operating member 18 is turning on the motor 16, the operating arm 18c is located outside the revolution trajectory of the crank 53, and the operating member 18 does not interfere with the operating drive mechanism 8 while the operating member 18 is operated by the motor 1.
When the switch 6 is in the OFF position, the operation arm 18c pushes and moves the crank 53, and the bristles 11b of the bristles 11 are pulled into the distal end portion 12 of the hollow guide portion 104 and stabilized.

In the example shown in FIGS. 7 to 10, the drive shaft 115 in which the bristle bundle 11 extends from the main body 2 or faces the end thereof.
Is connected to the tip of. In this way, the drive shaft 1
15 and the bristles 11 are not covered and have a simple and low bulk structure, which is easy to handle and use, and is convenient to carry. The drive shaft 115 in this case may be one that can advance and retreat in the axial direction as in the example shown in FIG. 10, but in the examples shown in FIGS.
The bristle bundle 11 is reciprocally rocked about 17, and the bristle bundle 11 has a bent portion 115a having a longitudinal direction substantially the same as the rocking direction. It is connected through. As a result, the bristles 1
Since the advancing / retreating direction of 1 is inclined with respect to the axis of the main body 2 as shown in FIGS.
It is possible to obtain a form that makes it easy to work on the back side of the teeth.

In the example shown in FIG. 7, the magnet 103 is of a horseshoe type and has an SN pole on the magnetic coupling surface 103a so as to form a magnetic circuit with the magnetic body 102 while satisfying the shape of the uneven surface. In the example shown in FIG. 8, the magnet 103 is divided into a central portion and a peripheral portion by an annular groove, and the magnetic coupling surface 103a has both SN poles to satisfy the above-mentioned uneven surface shape with the magnetic body 102. While trying to construct a magnetic circuit. However, the magnetic body 102 and the magnet 103
Of course, either of them may be concave or convex.

In the example shown in FIGS. 7 and 8, the drive shaft 115 is a rod-shaped body, the base end portion 115b side is housed in the tip end portion of the body portion 2 ahead of the grip portion 1, and swings from the tip end portion to the outlet portion 1c. It is supported by an elastic bush 118 so as to have a fulcrum 117 so that the drive shaft 115 swinging at the outlet portion 1c does not interfere with the main body portion 2. As a result, the drive shaft 115 is vibrated by the elastic bush 118 and gently swung, and the gap between the drive shaft 115 and the outlet portion 1c is sealed by the elastic bush 118, so that infiltration of water can be prevented. Drive shaft 11
The thinner 5 is, the lower the bulk is, the smaller the inertia is, and the better the durability is. It is preferably made of metal so that it can be swung stably, and stainless steel is preferable because it does not rust. However, the material is not limited to this, and other materials such as resin may be used. The drive shaft 115 and the elastic bush 118 have a concave-convex fitting portion 119 for preventing them from coming off.

The drive mechanism 8 is a motor / cam drive mechanism including a motor 16 and a cam 113 directly connected to the motor shaft 16a. The cam 113 is provided inside the distal end of the main body 2 alongside the base end 115b of the drive shaft 115 with the motor 16 in a direction in which the axis is orthogonal to the drive shaft 115. The stationary portion of the electric motor 16 is oriented at a right angle outside the main body 2. Sledding,
Since the circumferential direction of the cam 113 is along the longitudinal direction of the drive shaft 115, the drive shaft 115 is biased by the spring 114 and
The oscillating drive can be performed only by directly contacting the outer circumference of the pressure roller 3. Although the motor 16 is a small motor, it may be a flat motor or the like. Engagement grooves are provided around the outer periphery of the cam 113, and when the drive shaft 115 is swung in the state of engaging with this groove, lateral shake of the drive shaft 115 is prevented.

In these cases, the drive shaft 115 and the magnetic coupler 25 may be of a system that does not have a structure for supplying the cleaning liquid 3 as shown in FIG. This also applies to the cases shown in FIGS. 1 to 6 described above.
However, even with the drive system shown in FIGS. 7 and 8, as shown in FIG. 8, the liquid supply passage 34 for supplying the cleaning liquid 3 to the bristles 11 is shown.
If the cleaning liquid 3 is provided, the cleaning liquid 3 can be accurately delivered through the drive shaft 115 and the magnetic coupler 25 to the portion where the bristles bundle 11 is working without being guided by the hollow guide portion 104 as described above, and a small amount of cleaning liquid is provided. Can enhance the effect of removing dental plaque and foreign matter. Depending on the type of liquid used, disinfection is also possible.

Further, as shown in FIGS. 1 to 6, the liquid supply passage 34 may be supplied with the cleaning liquid 3 from the cleaning liquid tank 4 in the main body 2 by a manual pump 5 or an electric pump instead of the manual pump 5. In the example of FIG. 8, the cleaning liquid tank 122 provided other than the main body 2 supplies the cleaning liquid by gravity. For this reason, the cleaning liquid tank 122 is provided with a mounting portion such as a hook 123 or a suction cup 124 so that it can be supported at a high place. In this case as well, it is preferable to equip with a valve or the like that allows the cleaning liquid 3 supplied by gravity to flow in whenever necessary and to be used freely.

In the example shown in FIG. 9, the base end portion 11 of the drive shaft 115 is an example in which the drive mechanism 8 is an electromagnetic swing drive mechanism.
5b is provided with a magnetic pole of a permanent magnet 127 and 2 of the electromagnet 128 is provided.
It is facing two magnetic poles. The two magnetic poles of the electromagnet 128 are switched between the S pole and the N pole by the supply of the alternating current, and the magnetic poles of the drive shaft 115 are alternately attracted.
5 can be reciprocally oscillated around the oscillating fulcrum 117, and the oscillating can be oscillated even at the frequency of the AC power supply as it is. Since the drive shaft 115 fluctuates when no alternating current is supplied to the electromagnet 128, a spring 114 that keeps the drive shaft 115 in the neutral position is actuated to prevent this. The spring 114 also serves to prevent vibration and fluctuation when the drive shaft 115 reciprocally swings. Thus, when the drive mechanism 8 is an electromagnetic rocking drive mechanism, the drive shaft 115 can be rocked without friction by electromagnetically and non-contacting rocking transmission between the electromagnetic rocking drive mechanism and the drive shaft 115. .

In the example shown in FIG. 10, the drive shaft 115 faces the end of the main body 2 by being supported by the sliding bearing 131, and the frame-type cam follower 134 is driven by the cam 133 connected to the motor 16 by the gear 132. By doing so, it is driven forward and backward in the axial direction. A seal cover 135 made of rubber or resin film covers a portion of the main body 2 facing the tip of the drive shaft 115.
The seal cover 135 covers the end of the drive shaft 115 integrally with the concavo-convex engaging portion 136 and the like as the advance / retreat operation part 23 that moves forward and backward with the end of the drive shaft 115. The magnet 103 is provided with the concave-convex engaging portion 13
7, and the magnetic body 102 and the magnet 103 on the side of the bristles 11 constitute a magnetic coupler 25. In such a configuration, the bristle bundle 11 is directly connected to the advancing / retreating operation portion 23 of the seal cover 135 elastically or by having an engaging portion such as the concave and convex engaging portion 137 so as to be fitted and detachable. You can also Further, instead of or in addition to the seal cover 135, the hollow guide portion 104 as shown by an imaginary line can be used.

The bristle bundle 11 has a thickness of 0.1 to 0.3.
By converting bristles of about mm into circles and bundling them with a diameter of about 5 mm, it is possible to increase the range that can be covered at one time while ensuring the beat action, which increases work efficiency and shortens work time. Can be achieved.

Under these conditions, however, the bristle bundle 11 has bristles having a thickness of 0.1 to 0.3 mm and a diameter of 1 to 5
The bristle bundle 11 may be advanced in a substantially circular or elliptic bundling form, and the appropriate elasticity is obtained while making use of the strength of each of the bristles 11 individually, for example, a small size of about 1 to 2.5 mm. The smaller the diameter, the more effective it is for cleaning plaque and other plaque in narrow spaces such as periodontal pockets and spaces between teeth.
As the diameter of the large range of up to about 5 mm is increased, the range in which the beat effect can be exerted at the same time is enlarged without the beat effect being reduced due to the brush surface becoming too large, and the beat efficiency can be improved and the working time can be shortened. here,
In each example in which the bristles bundle 11 can be attached and detached, it is convenient to replace the plurality of types of the bristles bundle 11 described above and use them properly while selecting and using them.

If the bristles 11 are bundled with about 200 bristles having a thickness of about 0.1 mm, one horizontal letter is 5 mm.
It is suitable for obtaining a round or elliptical bundling form. Moreover, even if the tip of the bristles 11 is thinly spread out in the shape of a single horizontal line or the diameter is reduced to about 1 to 2.5 mm, the hollow guide portion 104 prevents the waist from weakening. The beat effect is not impaired even if the bristles are not particularly strong.

The bristle bundle 11 has a size of about 10 to 12 mm in and out from the hollow guide portion 104, and an advance / retreat distance of about 4 mm.
When it is ˜6 mm, the beat effect is high, and a subtle elasticity and waist strength that does not cause excessive stimulation are obtained.

The bristle bundle 11 uses nylon or polyester bristles. This is suitable for obtaining a subtle elasticity and waist strength that has a high beat effect and does not cause excessive stimulation.

Moreover, even if the tip of the bristle bundle 11 is thinly spread out in the shape of one horizontal letter or the diameter thereof is thinned to about 1 to 2.5 mm, the waist is weakened by the guidance of the hollow guide portion 104. The beat effect is not impaired even if the bristles have strong elasticity.

The bristle bundle has an entrance / exit dimension of about 10 to 12 mm from the hollow guide portion 104, and an advancing / retreating distance of about 4 to 4.
A further configuration of 6 mm provides a subtle elasticity and hip strength with a high beat effect and no overstimulation.

The bristles 11 are made of nylon or polyester. According to this, it is suitable for obtaining a delicate elasticity and waist strength that have a high beat effect and do not cause excessive stimulation.

[0079]

According to the present invention, as is clear from the above description, since the bristle bundle is driven forward and backward in the longitudinal direction by the drive mechanism at the tip of the main body, the main body is gripped by the grip. When the bristle bundle part at the tip of the main body is placed in the oral cavity and applied to the teeth, gums, periodontal groove, or between the teeth, the tip of the hair to be advanced and retracted repeatedly hits or enters and the so-called "toothpick method" is used. Sweeping can be done automatically at high speed, and in this case the brush surface is pressed slowly, unlike the conventional "toothpick method" that automatically performs beat-like stimulating massage at high speed So
The massaging effect for a single bristle bundle is higher than that of the conventional “toothpick method”. In particular, the tips of the bristles are arranged in the form of almost one horizontal letter, and the range of bristles is wider and the number of bristles is wider than in the case of conventional bristles without the attenuation of irritation when the tips form a surface. As compared with the conventional bristles, it is easy to exert a stronger brushing action on the interdental space, gums, periodontal groove, etc. with a wider action width corresponding to the width of the bristle, so that both the massage effect and the work efficiency are improved. , "Toothpick method"
Effective cleaning is efficiently and easily achieved in a short time.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of an automatic advance / retreat toothbrush according to an embodiment of the present invention.

FIG. 2 shows the automatic advancing / retreating toothbrush of FIG. 1, in which (a) is a sectional view and (b) is a plan view.

3 is a cross-sectional view of a portion of the toothbrush of FIG.

FIG. 4 is an exploded perspective view of a magnetic coupler connecting portion between the bristles bundle of the toothbrush of FIG. 1 and a driving mechanism.

FIG. 5 is a partial cross-sectional front view showing another example of the automatic advancing / retreating toothbrush according to the embodiment of the present invention.

6A and 6B show the hollow guide portion of FIG. 5, in which FIG. 6A is a sectional view and FIG. 6B is an exploded perspective view of a magnetic coupler connecting portion between a bristle bundle and a driving mechanism.

FIG. 7 shows another example according to the embodiment of the present invention, in which (a) is a cross-sectional view, (b) is a cross-sectional view of a magnetic coupler connecting portion between a bristle bundle and a drive mechanism, and (c) thereof. FIG. 4 is a perspective view of a magnet.

FIG. 8 shows another example according to the embodiment of the present invention,
(A) is a cross-sectional view, (b) is a cross-sectional view of a magnetic coupler connecting portion between a bristles bundle and a drive mechanism, and (c) is a perspective view of a magnet.

FIG. 9 is a side view showing still another example according to the exemplary embodiment of the present invention.

FIG. 10 is a cross-sectional view of a main part showing still another example according to the embodiment of the present invention.

FIG. 11 is a perspective view showing the arrangement of gums and teeth and the function of the bristle tips of the automatic advancing / retreating toothbrush of the present invention with arrows.

[Explanation of symbols]

1 grip 2 body 3 cleaning liquid 4,122 Cleaning solution tank 5 pumps 6 battery compartment 7 batteries 8 drive mechanism 11 bristles 11a base 11b bristle 11c Hair tip 12 Tip 16 motor 23 Forward / backward movement part 25 Magnetic coupler 32 Detachable part 34 Liquid supply path 102 magnetic material 103 magnet 104 Hollow guide section 115 Drive axis 117 Swing fulcrum

Claims (18)

[Claims] 1. A bristle bundle, a main body part or a part of which grips, and a bristle bundle that is provided in the main body part and is connected to or opposed to the bristle bundle. The bristle bundle is longitudinally extended at the tip of the main body. An automatic advancing / retreating toothbrush having a drive mechanism for automatically advancing / retreating, wherein at least the tips of the bristles are advanced in the form of a bundle of approximately one horizontal character. 2. The automatic advancing / retreating toothbrush according to claim 1, wherein the bristle bundle has a bristles having a thickness of about 0.1 to 0.3 mm converted into a circle and having a diameter of about 5 mm. 3. A bristle bundle, a main body part or a part of which grips, and a bristle bundle provided in the main body part and connected to or opposed to the bristle bundle. The bristle bundle has a drive mechanism for automatically moving back and forth, and the bristles have a thickness of about 0.1 to 0.3 mm, and the bristles advance in a substantially circular or elliptic bundling shape with a diameter of 1 to 5 mm. Automatic retractable toothbrush. 4. The automatic advancing / retreating toothbrush according to any one of claims 1 to 3, wherein the bristles have a shape in which about 200 bristles having a thickness of about 0.1 mm are bundled. 5. The automatic advancing / retreating toothbrush according to claim 1, wherein the bristles of the bristles are advanced and retracted with their bristle tips positioned at a right angle or inclined with respect to the axis of the main body. 6. The bristle tuft is guided by a hollow guide extending from the main body side so that the bristle tips have a predetermined bundling shape and is advanced and retracted. Automatic retractable toothbrush. 7. The automatic advancing / retreating toothbrush according to claim 6, wherein the bristle bundle has an entrance / exit dimension of about 10 to 12 mm from the guide and an advancing / retreating distance of about 4 to 6 mm. 8. The automatic advancing / retreating toothbrush according to claim 1, wherein the bristles are made of nylon or polyester. 9. The automatic advancing / retreating toothbrush according to claim 6, wherein the main body portion is provided with a liquid supply path for supplying a cleaning liquid to the hollow guide portion. 10. The automatic advancing / retreating toothbrush according to claim 1, wherein the bristle bundle extends from the main body or is connected to a tip of a drive shaft facing the end thereof. 11. The drive shaft is reciprocally rocked around a rocking fulcrum of the main body, and has a bending portion that orients the bundle of bristles so that its longitudinal direction is substantially the same as the rocking direction. The automatic advance / retreat toothbrush according to claim 10. 12. The automatic advancing / retreating toothbrush according to claim 10, wherein the main body portion and the drive shaft are provided with a liquid supply path for supplying a cleaning liquid to the bristles. 13. The automatic advancing / retreating toothbrush according to claim 9, wherein the main body portion includes a liquid supply mechanism that supplies a cleaning liquid to the liquid supply passage. 14. The automatic advancing / retreating toothbrush according to claim 1, wherein the bristles are detachably connected to an advancing / retreating operation unit of a drive mechanism. 15. The automatic advancing / retreating toothbrush according to claim 14, wherein the connection is performed by attraction of a magnet or fitting of an elastic portion. 16. The bristle tuft is provided so as to be driven by the advancing / retreating motion part of the drive mechanism and detachable.
5. The automatic advance / retreat toothbrush according to any one of 5 above. 17. The elastic member made of a spring, rubber, or resin is interposed in the forward / backward movement transmission system between the forward / backward movement portion of the drive mechanism and the bristles bundle. Automatic retractable toothbrush. 18. The forward / backward movement part of the drive mechanism is provided on the main body side so as to be covered with the outside and a seal member.
The automatic advancing / retreating toothbrush according to any one of 1.