JP4590947B2 - Ultrasonic oral care products - Google Patents

Description

  The present invention relates to an ultrasonic oral care product that performs oral care such as cleaning using ultrasonic waves, and more particularly, ultrasonic that can efficiently perform oral care such as cleaning using a liquid as a vibration transmission medium. Related to oral care products.

  Conventionally, a piezoelectric transducer is attached to the head body of a manual toothbrush, and a piezoelectric crystal that resonates at or near the resonance frequency emits ultrasonic waves between the bristles to disperse energy in the user's mouth. An ultrasonic toothbrush that can be bonded to the surface of a tooth to remove soft plaque and treat and prevent stomatitis has been proposed (see, for example, Patent Document 1). In addition, there has been proposed an apparatus in which an ultrasonic element is mounted on a handle body and ultrasonic waves are transmitted to a head portion with a horn (see, for example, Patent Documents 2 and 3). However, such a toothbrush has not been able to sufficiently remove plaque in the periodontal pocket where the hair bundle cannot reach.

On the other hand, the toothbrush head body has a space where cleaning water can easily collect, supplying cleaning water to the water pool, and removing the plaque and dirt by the action of the ultrasonic wave generated by the ultrasonic generator installed behind the space. An ultrasonic toothbrush that is emulsified and removed has been proposed (see, for example, Patent Document 4).
Similarly, an ultrasonic toothbrush that removes plaque and the like by the action of ultrasonic waves and that has a drain port to prevent leakage from the cleaning water port during cleaning has been proposed (for example, a patent) Reference 5).

  In these ultrasonic toothbrushes, since the ultrasonic oscillation part is provided in the head body that is put into the oral cavity at the time of cleaning, there is a limit to increasing the ultrasonic oscillation part, and in order to increase the output of the ultrasonic wave There is also a limit, and there is a high possibility of feeling uncomfortable due to the temperature rise of the ultrasonic oscillator.

JP 7-509151A JP 2004-41684 A JP 2004-41691 A JP-A-9-206130 JP 2001-8736 A

  In view of the above situation, the present invention intends to solve the problem that the degree of freedom in design of the ultrasonic oscillator can be improved and the uncomfortable feeling due to the temperature rise can be prevented. It is possible to clean the oral cavity efficiently by supplying less liquid material that can maintain the transmission efficiency without generating an air layer in the liquid material in the supply path in the section, and it is easy to use and free in design. The point is to provide ultrasonic oral care products with a high degree of accuracy.

In order to solve the above-mentioned problems, the present invention provides a handle body that is gripped during use, a head body that has a discharge portion for discharging a liquid material, and a head body that is interposed between the two. A liquid body supply path from the handle body to the discharge part of the head body through the neck body, and the liquid body is provided inside the handle body. An ultrasonic oral care comprising: an ultrasonic oscillation unit for irradiating a body with ultrasonic energy, wherein ultrasonic waves transmitted using the liquid material as a vibration transmission medium are transmitted through a supply path to a discharge unit. Made up the supplies.
Examples of oral care products include, but are not limited to, toothbrushes having the above-described ultrasound supply portion, irrigators, tongue or tongue coating cleaning tools, whitening tools, and drug absorption promoting tools.
A liquid is a care liquid such as a liquid such as water or a liquid or gel oral composition, such as a bactericidal agent, an anti-inflammatory agent, an enzyme, vitamins, an astringent, an anticaries agent, a bleaching agent. Liquid, liquid or gel containing one or more ingredients of the group consisting of agents, whitening agents, stain inhibitors, coating agents, abrasives, tartar control agents, plant extracts, fragrances, cleaning agents, surfactants It is preferable to use an oral composition.

  Here, it is preferable that a reflection plate for reflecting ultrasonic waves in a bending direction is provided at a bent portion of the supply path, and at least an inner wall portion of the supply path is made of metal, hard resin, or glass. preferable.

  Further, it is preferable to provide a rod-shaped ultrasonic horn extending from the ultrasonic oscillating portion into the supply path and irradiate ultrasonic energy from the ultrasonic horn.

  Specifically, the supply path is configured by a liquid supply path provided inside the neck and a discharge path that extends in a direction intersecting the liquid supply path in the head body and constitutes the discharge unit. preferable. Further, it is preferable that the neck body is detachably attached to the handle body.

  Further, the discharge part is constituted by a liquid reservoir part protrudingly provided on the head body and opened at the tip end side along the protruding direction, and the supply amount of the liquid material per second is determined in the interior of the liquid reservoir part. Those having a volume of 1/10 to 6/5 are preferred.

Here, it is preferable that the internal volume of the liquid reservoir is 0.01 to 1.0 mL, and it is preferable that the opening area of the liquid reservoir is 3.0 to 100 mm ² .

  The liquid reservoir is preferably formed of an elastic member at least at the tip of a cylinder provided on the head body, and the elastic member preferably has a thickness of 0.1 to 3.0 mm.

  Further, it is preferable that the head body is provided with a brush portion in which a brush material used for brushing or massage is implanted, and the liquid reservoir portion is provided inside the brush portion surrounded by a plurality of brush materials. A thing or the thing which provided the said liquid reservoir part side by side next to the said brush part is preferable.

  Further, the head body is provided with a split head provided with the liquid reservoir and a split head provided with a brush portion in which the brush material is implanted, and the liquid reservoir is provided with the split head provided with the brush portion. It is preferable that the divided head is configured to be movable in the front-rear direction.

  Further, it is preferable that the head body is provided with a brush portion in which a brush material used for brushing or massage is implanted, and the inner wall of the liquid reservoir portion is configured by the brush material of the brush portion.

  The supply path is preferably provided with a check valve.

  Moreover, what comprises the said discharge part from the nozzle part protrudingly provided by the head body, and cleans the intraoral area using the momentum of the liquid body discharged from this nozzle is preferable.

  A liquid storage tank for supplying a liquid material is preferably provided inside the handle body, and a liquid material used as a cleaning liquid is preferable.

According to the ultrasonic oral care product according to the present invention as described above, since the ultrasonic oscillating portion is provided inside the handle body that cannot be put into the oral cavity at the time of cleaning, The degree of freedom in design, such as increasing output, is improved, and discomfort due to the temperature rise of the head body inserted into the oral cavity can be prevented, and the head body, head body, and neck body can be removed from the handle body. In the case where a detachable structure that can be separated and replaced is adopted, the cost can be greatly reduced because the ultrasonic wave oscillating portion does not exist at the replacement site.
The ultrasonic oral care product of the present invention not only cleans the oral cavity, but also promotes the absorption of colored stains such as teeth and oral soft tissues, the absorption of drugs, the cleaning of the tongue, the sterilization of the oral cavity, and the absorption of alveolar bone You can also.

  In addition, since the reflector for reflecting the ultrasonic wave in the bending direction is provided at the bent part of the supply path, the ultrasonic wave can be efficiently propagated using the reflector even in various shapes with the supply path bent. Can be made.

  In addition, since at least the inner wall portion of the supply path is made of metal, hard resin, or glass, energy loss of ultrasonic waves at the time of reflection can be suppressed and propagated efficiently.

  In addition, a rod-shaped ultrasonic horn extending from the ultrasonic oscillator into the supply path is provided, and ultrasonic energy is emitted from the ultrasonic horn. Can be prevented.

  Further, the discharge part is constituted by a liquid reservoir part protrudingly provided on the head body and opened at the tip end side along the protruding direction, and the supply amount of the liquid material per second is determined in the interior of the liquid reservoir part. Since the volume is set to 1/10 to 6/5, an air layer is not generated in the liquid reservoir, and less liquid material is supplied so that the transmission efficiency can be maintained. It is possible to efficiently remove plaque and the like in the periodontal pocket using the overflowing liquid material as a vibration transmission medium, which is convenient and small in capacity of the liquid storage tank, and can be mounted inside the toothbrush.

In addition, since the internal volume of the liquid reservoir is 0.01 to 1.0 mL, or the opening area of the liquid reservoir is 3.0 to 100 mm ² , the cleaning area is maintained while holding the liquid by surface tension. More efficient cleaning can be performed.

  In addition, since the thickness of the elastic member is 0.1 to 3.0 mm, the strength can be maintained when pressed on a periodontal pocket or the like, and the elastic member can be applied to a narrow part.

  Further, the head body is provided with a split head provided with the liquid reservoir and a split head provided with a brush portion in which the brush material is implanted, and the liquid reservoir is provided with the split head provided with the brush portion. Since it is configured to be movable in the front-rear direction with respect to the provided split head, the user can also replace the split head separately according to the fatigue of the parts, and the split head with the brush part can be moved relative to each other. Even if the structure to be adopted is adopted, it can be moved independently of each other, so that it is possible to avoid the situation that the liquid reservoir part receives vibration due to the movement of the brush part and goes out of order when the liquid is discharged. The liquid material can be supplied more reliably.

  Further, since a check valve is provided in the supply path, it is possible to prevent the liquid from flowing backward due to the weight of the liquid gradually filling the liquid reservoir, thereby enabling a slower supply of the liquid. Become.

  Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a diagram showing an overall configuration according to the present invention. FIGS. 1 to 3 are a first embodiment, FIGS. 4 and 5 are a second embodiment, FIG. 6 is a third embodiment, and FIG. Embodiment, FIG. 8 shows 5th Embodiment, FIG. 9 shows 6th Embodiment, FIG. 10 shows 7th Embodiment, FIG. 11 shows 8th Embodiment, and the code | symbols 1A-1H in the figure are ultrasonic oral care products, Reference numeral 2 denotes a liquid reservoir, 3 denotes a brush, 4 denotes an ultrasonic oscillator, and 5 denotes a supply path.

  The ultrasonic oral care product according to the present invention includes a handle body 10 to be gripped at the time of use, a head body 11 having a discharge portion 2 for discharging a liquid material, and a head body 11 interposed therebetween. A body 12 for bringing the body 11 to the back of the oral cavity, and a liquid supply path 52 extending from the handle body 10 to the discharge part 2 of the head body 11 through the neck body 12. In addition, an ultrasonic oscillation unit 4 for irradiating the liquid material with ultrasonic energy is provided inside the handle body 10, and ultrasonic waves transmitted using the liquid material as a vibration transmission medium are reflected in the supply path 5. While being transmitted to the discharge part 2, it is characterized.

  First, a first embodiment of the present invention will be described with reference to FIGS.

  In the ultrasonic oral care product 1A according to the present embodiment, a liquid reservoir 20 that is open at the distal end side along the protruding direction as the discharge portion 2 is protruded from the head body 11 at the distal end, and the liquid reservoir 20 A liquid that is a cleaning solution is supplied into the oral cavity, and plaque in the periodontal pocket that cannot be reached by normal brushing is removed by ultrasonic vibration using the liquid as a vibration transmission medium, or adhered to the tongue or oral mucosa. Residues and the like are removed. In particular, by setting the supply amount of the liquid material to 1/10 to 6/5 of the internal volume of the liquid reservoir 20 per second, the liquid material is always filled by the action of the surface tension of the liquid material. It is possible to efficiently wash the liquid reservoir 20 in a state of being pressed against the periodontal pocket, tongue, and the like.

  Inside the handle body 10, a liquid storage tank 50 filled with a liquid material is provided. A liquid supply path 52 communicating from the liquid storage tank 50 through the neck body 12 to the internal space layer 21 of the liquid reservoir 20 is formed, and the supply path 5 from the handle body 10 to the discharge section 2 is a neck body. 12 and the discharge path 55 formed by the internal space layer 21 of the liquid reservoir 20 extending in the direction intersecting the liquid supply path 52 in the head body 11. The liquid material is supplied to the internal space layer 21 through the supply path 5, and ultrasonic vibrations are transmitted to the periodontal pocket in the oral cavity through the liquid material that gradually overflows from the opening surface.

  The liquid storage tank 50 attached to the inside of the handle body 10 is constituted by a tube container, thereby preventing air from being mixed into the liquid sucked by the pump 51. Such a tube container has, for example, two sheet members facing each other and a nozzle member sandwiched between the opposite one end central portions of the sheet material, and one end including a left and right edge and a central portion provided with the nozzle material. After forming a bag body having the other end opened by thermally welding and sealing the edge, a soft tube formed by filling a liquid material through the opening and thermally welding the other end edge can be used. A special drug is used as the liquid, and in this example, a cartridge filled with the drug is replaceably mounted as the liquid storage tank 50. The liquid material may be composed only of water such as distilled water or tap water.

  A liquid feed pump 51 for supplying a liquid material to the liquid supply path 52 is provided, but various methods can be appropriately used as means for supplying such a liquid material. As described above, the liquid pump 51 sucks the liquid material from the liquid storage tank 50. In addition, the liquid pump pumps out the liquid tank, or the liquid tank internal volume is reduced by a roller or the like. It is also possible to use one that sends out, one that puts compressed air into the liquid storage tank and sends it out.

  The head body 11 on which the liquid reservoir 20 protrudes is provided with a brush portion 3 made of a brush material used for cleaning or massaging in the oral cavity. In this example, around the liquid reservoir 20, A plurality of brush portions 3 in which a plurality of hair bundles 30 in which a plurality of filaments are densely arranged are provided, and the brush portion 3 can reciprocate back and forth along the longitudinal direction of the neck with respect to the liquid reservoir portion 20. It is configured. The brush material can be made of nylon, polyester (for example, PET, PBT, etc.), polyolefin (for example, PE, PP, etc.), silicone rubber, urethane rubber, elastomer, or the like.

  More specifically, each of the head bodies 11 is divided into upper and lower parts, and a hair bundle 30 is planted as a brush material on the upper divided head 13 and the length of the divided head 13 is set on the lower divided head 14. A liquid reservoir 20 that protrudes upward through the hole is provided. These upper and lower divided heads 13 and 14 are integrally formed continuously at the distal ends of divided neck bodies 15 and 16 that are similarly divided into upper and lower parts. A path 52 is provided, and the other divided neck 15 has a proximal end on an output shaft 58 of a gear box 54 that converts a rotational motion of a drive motor 53 provided in the handle body 10 into a reciprocating motion in the front-rear direction. It is detachably connected and reciprocates in the front-rear direction with respect to the divided head 14 and the divided neck 16 together with the divided head 13. Reference numeral 60 denotes a support that supports the movement of the output shaft 58, and has a bearing structure made of, for example, a bearing, a rubber material, or a spring material.

  As shown in FIG. 3, instead of providing the drive motor 53 and the gear box 54 for reciprocating the output shaft 58 back and forth, a drive motor 57 for rotating the weight 80 is provided, and the output shaft 58 supported by the support 60 is provided. It is also a preferable example to vibrate the divided neck 15 and the divided head 13 in the front-rear direction.

  The liquid feeding path 52 is formed by embedding a pipe member 56 made of metal, resin, or glass material in the divided neck body 16, and the base end side connected to the handle body 10 is connected to the peripheral members of the piezoelectric element 40. Are detachably connected. In addition, instead of embedding the pipe member 56, a neck body is formed of the above-mentioned material, and a liquid supply path 52 is formed in the neck body, or a liquid supply path is formed in a neck body made of other materials. In addition, a metal layer may be deposited on at least the inner surface of the liquid feeding path.

As the metal material, it is preferable to use stainless steel, aluminum, brass, titanium or the like, and as the resin material, polypropylene resin, polyethylene resin, ABS resin, polystyrene resin, AS resin, methacrylic resin, epoxy resin, non-resin It is preferable to use a hard resin such as a saturated polyester resin, a phenol resin, a urea resin, a melamine resin, a silicone resin, a polyamide resin, a polyacetal resin, a fluororesin, a polyester resin, a polyamideimide resin, a polyimide resin, or a polycarbonate resin. It is also possible to use a soft material such as silicone rubber, urethane resin, or elastomer. In this case, the liquid feeding path 52 is formed straight along the propagation direction in order to reduce propagation loss due to absorption of ultrasonic waves. In addition, the internal shape of the liquid supply path is not limited to a circular shape, but may be a polygonal shape, an oval shape, a midway shape or a diameter change, for example, a tapered shape.
The inner diameter of the liquid feeding path 52 is set to a diameter of 1 to 10 mm, preferably 2 to 6 mm.

  As shown in FIG. 2A, a bent flow path is formed at the connecting portion between the liquid supply path 52 and the discharge path 55 on the distal end side, and the superfluous that has propagated through the liquid supply path 52 is formed there. A reflection plate 54 is provided for reflecting sound waves in the direction in which the ejection path 55 extends. This reflection plate 54 is also made of the same metal, resin or glass material as described above, a metal layer is deposited on the reflection surface by vapor deposition, a metal foil is pasted, and a heat-resistant surface with a mirror finish. A material made of a conductive resin or the like is a preferred embodiment, and a shape having a light collecting function such as a parabolic shape is also preferable in addition to a planar shape. Such a bent flow path is not limited to the connection portion with the discharge passage 55, and can be provided at an appropriate location. For example, as shown in FIG. 2B, the bent flow passage is formed at the connection portion with the handle body 10. In such a case, a reflecting plate 54 may be provided in that portion, and the angle of reflection is not limited to the bending direction.

  In addition, it is also possible to guide the ultrasonic wave by using the reflection on the inner surface of the pipe without using a reflection plate. For example, as shown in FIG. It is also possible to reflect the ultrasonic wave by adjusting the bending angle using a pipe. Further, as shown in FIG. 2D, it is also preferable to extend the ultrasonic horn 43 into the supply path 5 to prevent energy loss in which the ultrasonic wave is attenuated by the bubbles generated on the base end side of the liquid supply path 52. It is an example.

  The handle body 10 includes an ultrasonic oscillation circuit 41 for supplying a high frequency to the piezoelectric element 40 and a storage battery 42 or a dry battery for supplying power to the circuit. The sonic vibration is transmitted to a periodontal pocket or the like in the oral cavity using a liquid material filled in the liquid reservoir 20 through the supply path 5 and supplied into the oral cavity from the tip of the liquid reservoir 20 as a medium. Cleaning is done.

  A liquid supply hole 52a communicating with the liquid supply path 52 is formed in the upper surface of the head body 11 serving as a bottom surface inside the liquid reservoir 20, and the liquid reservoir 20 is gradually filled into the liquid supply hole 52a. It is desirable that a check valve is provided for preventing the liquid from flowing back due to its own weight, and that the liquid can be supplied more slowly by the check valve. In this example, the liquid material is supplied from the back surface of the liquid reservoir 20 through the liquid supply hole 52a opened on the upper surface of the head body, but the present invention is not limited to this, and is supplied from the side surface of the liquid reservoir 20. Also good.

  In this example, the liquid reservoir portion 20 is formed of a cylindrical elastic member formed of silicone rubber, thermoplastic elastomer, or the like, but is made of metal, resin, or glass material in view of reflection during ultrasonic wave propagation. Those are also preferred. In a preferred embodiment, the distal end opening surface that is in direct contact with the oral cavity is formed into a gentle convex surface so as to be in close contact with the periodontal pocket.

The liquid reservoir 20 has an opening area of 3.0 to 100 mm ² , preferably 3.0 to 30 mm ² , a thickness of 0.1 to 3.0 mm, and an internal volume composed of the internal space layer 21 is 0.01. Set to ~ 1.0 mL. If the thickness is smaller than 0.1 mm, the strength may not be maintained when pressed against a periodontal pocket or the like, and the opening may be crushed, making it impossible to perform efficient cleaning. There is a risk that the usability will deteriorate, for example, it will not reach a narrow part. As for the internal volume, if the volume is too large, it is difficult to hold the liquid material due to surface tension. The

  The depth of the liquid reservoir 20 is the protruding height of the liquid reservoir 20, but if the depth is too deep, the protruding height increases, causing inconvenience in the cleaning operation in the oral cavity, and if the depth is too shallow, a certain height is obtained. Therefore, it is difficult to bring the tip opening surface into contact with the periodontal pocket or the like because the tip opening surface is lower than the tip height of the surrounding hair bundle 30 due to the relationship with the hair bundle 30 that is necessary.

  Further, if the inner diameter of the liquid reservoir is too large, it becomes difficult to hold the liquid material due to surface tension. Another example of the liquid reservoir 20 may be a honeycomb-shaped elastic member having a plurality of through-holes along the vertical direction. In this case, a plurality of columnar internal space layers are formed. Become. It is also possible to configure the liquid reservoir portion from a sponge-like elastic member having a plurality of communication space layers inside. Since many small openings gather at the tip opening surface, these can further improve the holding power of the liquid due to the surface tension described above, and the total internal volume consisting of a plurality of internal space layers is the above-mentioned liquid volume. Similar to the internal volume of the reservoir 20, it is set to 0.01 to 1.0 mL, more preferably 0.01 to 0.5 mL.

  In order to deliver the flow rate accurately, it is also effective to add a valve for adjusting the flow rate to the liquid supply path 52. The supply amount of the liquid material by the liquid feed pump 51 is set to the internal volume of the liquid reservoir 20 so that the supply amount per second becomes 1/10 to 6/5 of the internal volume of the liquid reservoir 20 as described above. Accordingly, an optimum amount with high efficiency is set. Specifically, the optimum amount is supplied by the liquid feed pump 51 at 1 to 1200 μL / sec. If the amount of supply per second is more than 6/5 of the internal volume, water will overflow into the mouth, making it inefficient and unusable, and a liquid storage volume of about 5 to 15 mL that can be built into the handle body. If it is difficult to perform cleaning once in the tank, and conversely, if it is less than 1/10, a space is created in the interior, the transmission of ultrasonic vibrations is reduced, and the cleaning efficiency by the ultrasonic waves is reduced.

  Here, since ultrasonic cleaning cannot be performed from the start of cleaning until the liquid reservoir 20 is filled with the liquid material, the pump operation is accelerated and the supply amount is increased for several seconds required for the filling. It is preferable to control, and it is desirable to provide such a supply amount changeover switch or to automatically control the increase and decrease of the supply amount.

  In the first embodiment described above, the head body 11 and the neck body 21 are divided and configured to move the brush part in the front-rear direction independently of the discharge part 2, but the second embodiment shown in FIGS. The ultrasonic oral care product 1B according to the embodiment vibrates the entire head body 11 including the brush part 3 integrally with the discharge part 2 in a predetermined direction without dividing the head body 11 and the neck body 12. 4 shows that the drive motor 57 for vibrating the weight 80 in the front-rear direction is provided in the contents of the handle body 10 to vibrate the head body 11 in the front-rear direction in the oral cavity. FIG. 5 vibrates the weight 80 in the lateral direction. A drive motor 57 is provided to vibrate the head body 11 laterally in the oral cavity.

  The liquid reservoir 20 has a bottom surface fixed to the upper surface of the head body 11. For example, the head body 11 and the neck body 12, which are integrally molded using a synthetic resin material, are similarly molded with a synthetic resin material. It is detachably attached to. Various forms conventionally provided, such as those in which the head body 11 is detachably provided on the neck body 12 and those in which the entire head body 11 is integrally formed of a synthetic resin material, can be appropriately employed. Since other structures including the ultrasonic oscillator 4 and the supply path 5 are basically the same as those in the first embodiment, the same structures are denoted by the same reference numerals and the description thereof is omitted.

  FIG. 6 shows an ultrasonic oral care product 1 </ b> C according to a third embodiment of the present invention in which a liquid reservoir portion 20 made of an elastic member or the like is provided adjacent to the brush portion 3 in the head body 11. In the state shown in the figure, the brush portion 3 is located on the distal end side of the hair bundle. However, when cleaning is performed by ultrasonic vibration, the distal end side and the proximal end side of the head body 11 are directed oppositely to the neck body 12. Or is rotated 180 degrees, and the liquid reservoir 20 located on the proximal end side in the figure is changed to the distal end side for cleaning.

A liquid supply path (not shown) inside the head body 11 extends from the liquid supply hole at the bottom of the liquid reservoir 20 and opens to the distal end side of the head body 11, and the liquid reservoir 20 is set on the distal end side of the head body 11. In this case, the opening is connected to the liquid feeding path of the neck body 12.
In the case where the liquid reservoir 20 and the brush 3 are provided in this manner, the brush 3 and the liquid reservoir 20 can be set at the optimum head body tip position in accordance with each of the brush cleaning and the ultrasonic cleaning. This makes it possible to perform oral cleaning more efficiently.

  In FIG. 7, the head body 11 is provided with a brush portion 3 in which a brush material (hair bundle 30 in this example) used for brushing or massage is implanted, and the liquid reservoir portion 20 </ b> A is formed by the brush material of the brush portion. The ultrasonic oral care article 1D of 4th Embodiment of this invention which comprised the inner wall of the discharge part 2 is shown. More specifically, the plurality of hair bundles 30 are closely arranged in a ring shape in the brush portion 3, and the plurality of hair bundles 30,. Each bristle bundle 30 constituting at least the inner wall 22 of the brush portion 3 has a strong lateral elastic force and is closely planted with each other, so that the liquid material can be filled without leaking without using a separate elastic member. The discharge path 55 of the internal space layer 21A is formed, and the cost increase is suppressed.

  FIG. 8 shows an ultrasonic oral care product 1E according to the fifth embodiment of the present invention in which a brush material for massage is implanted around the liquid reservoir 20 as the brush portion 3. Such brush materials can be silicone rubber, urethane rubber, elastomer, etc. in addition to nylon, polyester (for example, PET, PBT, etc.), polyolefin (for example, PE, PP, etc.), etc. It is also possible to use a brush material made of a resin material constituting the member 56 or a combination of the resin material and a metal material. Since other structures are basically the same as those of the first embodiment described above, the same reference numerals are given to the same structures, and descriptions thereof are omitted.

  The brush part 3 in each of the above embodiments is fixed or moved back and forth, but for example, the brush part 3 on which a hair bundle is erected is provided on a flocking table that is configured separately from the head body main body. It is also a preferred embodiment to provide a mechanism for rotating the flocking table. Further, for brushing, in addition to what functions as a toothbrush as described above, a brush portion that functions as an interdental brush may be used. Further, a preferred embodiment is one in which the brush portion 3 is omitted and only the water reservoir portion 20 is provided.

  In FIG. 9, the discharge part 55 is constituted by a nozzle part 23 projecting from the head body 11, and can be used as a water flow cleaner that cleans the oral cavity using the momentum of the liquid material discharged from the nozzle 23. The ultrasonic oral care product 1F of 6th Embodiment of this invention is shown.

  As shown in FIGS. 9B and 9C, the discharge port 23a at the tip of the nozzle may be an ellipse, a rectangle or other shapes in addition to the round hole, and the number and direction of the discharge ports are not limited to one direction. A plurality of them may be provided. The rest of the structure is basically the same as in the first embodiment described above, and the cleaning solution discharged from the nozzle cleans the inside of the oral cavity with its momentum, and it can also clean dirt that is difficult to remove only with momentum by ultrasonic vibration. However, unlike the case of the water reservoir 20 of the first embodiment, the discharge amount will increase.

  The nozzle portion 23 can be made of the same silicone rubber, urethane rubber, elastomer, and the like as the massage brush of the fifth embodiment. In addition, as shown in FIG. 9 (d), a base end made of a relatively hard metal material or the like. It is a preferred embodiment that the nozzle portion 23 is constituted by the portion 23b and a tip portion 23c made of a relatively soft resin material or a material similar to the massage brush.

  FIG. 10 shows a seventh embodiment of the present invention in which a water reservoir 20 is provided at the center of the head body 11 and a plurality of nozzle parts 23 similar to those in the sixth embodiment are provided around the head body 11 to function as a tongue brush. 11 shows an ultrasonic oral care product 1G, and FIG. 11 shows a separate external device 8 instead of providing a liquid storage tank 50, a liquid feed pump 51, a drive circuit 41, etc. in the contents of the handle body 10. The ultrasonic oral care according to the eighth embodiment of the present invention is configured to supply the liquid material by connecting the liquid supply pipe 59 to the liquid supply path 52 of the handle body 10 from the liquid storage tank 50 of the external device 8. The article 1H is shown. FIG. 11 shows an example of a water flow washer provided with a nozzle portion 23 on the head body 11, but not limited to this, various things such as those in which a brush material is implanted are adopted as in the above embodiments. it can.

  In the above embodiment, the head body 11 and the neck body 12 are detachably attached to the handle body 10, and the head body 11 and the neck body 12 are integrally formed. Of course, the structure is not limited at all, and a structure in which the neck body 12 and the handle body 10 are integrally formed, and a structure in which the head body 11 is detachably attached to the distal end portion of the neck body 12 can be employed.

(A) is the schematic which shows the internal structure of the ultrasonic oral care article which concerns on 1st Embodiment of this invention, (b) is a fragmentary perspective view which shows a head body. (A)-(d) is explanatory drawing for demonstrating the propagation form of the ultrasonic wave in a supply path, respectively. The fragmentary sectional view which shows the modification which vibrates a division | segmentation head in the front-back direction via an output shaft. Sectional drawing which shows 2nd Embodiment of this invention which vibrates a head body in the front-back direction within an oral cavity. Sectional drawing which shows 2nd Embodiment of this invention which vibrates a head body laterally in an oral cavity. The fragmentary perspective view which shows 3rd Embodiment of this invention which provided the liquid reservoir part adjacent to the brush part. The fragmentary perspective view which shows 4th Embodiment of this invention which comprised the inner wall of the discharge part with the brush material of the brush part. The fragmentary top view which shows 5th Embodiment of this invention which planted the brush material for massage around the liquid reservoir part. (A) is a fragmentary sectional view which shows 6th Embodiment of this invention which comprised the discharge part from the nozzle part protrudingly provided by the head body, (b) and (c) is a fragmentary top view, (d) is a nozzle part. FIG. (A) And (b) is explanatory drawing which shows 7th Embodiment of this invention which provided multiple nozzle parts around the water reservoir part of the head body center part. Explanatory drawing which shows 8th Embodiment of this invention which comprises an external device and supplies a liquid material.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1A-1H Ultrasonic oral care product 2 Discharge part 3 Brush part 4 Ultrasonic oscillation part 5 Supply path 8 External apparatus 10 Handle body 11 Head body 12 Neck body 13,14 Division head 15,16 Division neck body 20,20A Liquid reservoir Part 21, 21A Spatial layer 22 Inner wall 23 Nozzle part 23a Discharge port 23b Base end part 23c Tip part 30 Hair bundle 40 Piezoelectric element 41 Ultrasonic oscillation circuit 42 Storage battery 43 Ultrasonic horn 50 Liquid storage tank 51 Liquid feed pump 52 Liquid feed path 52a Liquid supply hole 53 Drive motor 54 Reflector plate 55 Discharge path 56 Pipe member 57 Drive motor 58 Output shaft 59 Liquid supply pipe 60 Support body 80 Weight

Claims (16)

A handle body to be gripped in use, a head body having a discharge portion for discharging a liquid material, and a neck body for interposing the head body to reach the back of the oral cavity The head body is provided with a brush portion in which a brush material used for brushing or massaging is provided, the discharge portion is projected from the head body, and the distal end side along the projecting direction is opened. The liquid reservoir portion is made of a cylindrical elastic member whose front end opening surface is in direct contact with the oral cavity, and the liquid reservoir portion of the head body from the handle body via the neck body. only set the supply path of the liquid leading to become more discharge portion, inside the handle body, the ultrasonic oscillating unit for irradiating ultrasonic energy to the liquid material, as well as reciprocating or the brush part back and forth Vibrates in a predetermined direction That the driving motor is provided, ultrasonic oral care products ultrasonic waves propagating through the liquid material as a vibration transmitting medium, characterized in that it is transmitted to the discharge part of the supply passage consisting of the liquid reservoir.   The ultrasonic oral care product according to claim 1, wherein a reflection plate for reflecting ultrasonic waves in a bending direction is provided at a bent portion of the supply path.   The ultrasonic oral care product according to claim 1 or 2, wherein at least an inner wall portion of the supply path is made of metal, hard resin, or glass.   The ultrasonic oral care product according to any one of claims 1 to 3, wherein a bar-shaped ultrasonic horn extending into the supply path from the ultrasonic oscillator is provided, and ultrasonic energy is irradiated from the ultrasonic horn. .   The said supply path is comprised from the liquid feeding path provided in the inside of a neck, and the discharge path which extends in the direction which cross | intersects with respect to the said liquid feeding path in a head body, and comprises the said discharge part. The ultrasonic oral care product according to any one of the above.   The ultrasonic oral care product according to any one of claims 1 to 5, wherein the neck body is detachably attached to the handle body. The ultrasonic oral care product according to any one of claims 1 to 6, wherein a supply amount of the liquid material per second is set to 1/10 to 6/5 of an internal volume of the liquid reservoir.   The ultrasonic oral care product according to claim 7, wherein an inner volume of the liquid reservoir is 0.01 to 1.0 mL.   The ultrasonic oral care product according to claim 7 or 8, wherein an opening area of the liquid reservoir is 3.0 to 100 mm2. Claim 1 ultrasonic oral care products according comprised the thickness of the elastic member as a 0.1 to 3.0 mm. A plurality of inside surrounded by brush member formed by providing the liquid reservoir according to claim 1 ultrasonic oral care products according to the brush portion. Claim 1 ultrasonic oral care products according composed features a said liquid reservoir adjacent to the brush portion. The head body is provided with a split head provided with the liquid reservoir and a split head provided with a brush portion in which the brush material is implanted, and the split head provided with the brush portion is provided with a liquid reservoir. The ultrasonic oral care product according to any one of claims 1, 11, and 12 , configured to be movable in the front-rear direction with respect to the divided head. The ultrasonic oral care product according to any one of claims 7 to 13 , wherein a check valve is provided in the supply path. The ultrasonic oral care product according to any one of claims 1 to 14, wherein a liquid storage tank for supplying the liquid material is provided inside the handle body. Ultrasonic oral care products according to any one of claim 1 to 15, wherein the liquid material is a cleaning solution.

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