WO2009128477A1 - 電子歯ブラシ - Google Patents
電子歯ブラシ Download PDFInfo
- Publication number
- WO2009128477A1 WO2009128477A1 PCT/JP2009/057597 JP2009057597W WO2009128477A1 WO 2009128477 A1 WO2009128477 A1 WO 2009128477A1 JP 2009057597 W JP2009057597 W JP 2009057597W WO 2009128477 A1 WO2009128477 A1 WO 2009128477A1
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- WIPO (PCT)
- Prior art keywords
- electrode
- brush
- handle
- protrusion
- exposed
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B15/00—Other brushes; Brushes with additional arrangements
- A46B15/0002—Arrangements for enhancing monitoring or controlling the brushing process
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- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B15/00—Other brushes; Brushes with additional arrangements
- A46B15/0002—Arrangements for enhancing monitoring or controlling the brushing process
- A46B15/0016—Arrangements for enhancing monitoring or controlling the brushing process with enhancing means
- A46B15/0022—Arrangements for enhancing monitoring or controlling the brushing process with enhancing means with an electrical means
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- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B15/00—Other brushes; Brushes with additional arrangements
- A46B15/0002—Arrangements for enhancing monitoring or controlling the brushing process
- A46B15/0016—Arrangements for enhancing monitoring or controlling the brushing process with enhancing means
- A46B15/0024—Arrangements for enhancing monitoring or controlling the brushing process with enhancing means with means generating ions
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/221—Control arrangements therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/222—Brush body details, e.g. the shape thereof or connection to handle
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/225—Handles or details thereof
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B2200/00—Brushes characterized by their functions, uses or applications
- A46B2200/10—For human or animal care
- A46B2200/1066—Toothbrush for cleaning the teeth or dentures
Definitions
- the present invention relates to an electronic toothbrush that makes it easy to remove plaque by passing an electric current in the oral cavity.
- an oral hygiene device that improves the hygiene of the oral cavity by preventing the occurrence of alveolar pus leakage and gingivitis by improving the metabolism and blood circulation of soft tissues in the oral cavity.
- An example of this type of oral hygiene device is an electronic toothbrush (also referred to as an ion toothbrush) (see Japanese Patent Publication No. 2560162).
- the electronic toothbrush weakens the adhesive force of plaque to the tooth surface by passing a weak current in the oral cavity (current is passed between the tooth and the electronic toothbrush). Therefore, if an electronic toothbrush is used, plaque can be easily removed.
- the electronic toothbrush described in the Japanese Patent Publication includes a spindle connected to the negative electrode of the battery and an end connected to the positive electrode of the battery in order to allow a weak current to flow in the oral cavity.
- the end body is located on the handle.
- the support shaft is exposed to the outside through a communication groove formed in the neck. When brushing teeth, the liquid in the oral cavity (saliva or dentifrice aqueous solution) comes into contact with the support shaft through the communication groove, so that a current flows between the support shaft and the end body through the human body (current flows into the oral cavity).
- the support shaft is exposed to the outside from the communication groove formed in the neck. Therefore, depending on the direction of the electronic toothbrush at the time of brushing, the liquid in the oral cavity may not enter the communication groove due to the influence of gravity. In this case, no current flows in the oral cavity, and the effect that plaque can be easily removed is not obtained.
- the present invention has been made in view of the above problems.
- the objective of this invention is providing the electronic toothbrush which can flow an electric current stably in an oral cavity.
- An electronic toothbrush includes a brush part having a flocking region in which toothbrushing hair is planted, and a handle for holding the brush part.
- the brush portion includes, as brush electrodes exposed on the surface of the brush portion, a first electrode located in the flocked region and a second electrode located in a non-flocked region where the hair is not planted.
- the handle includes a handle electrode exposed on a surface of the handle. The handle stores a power source for applying a voltage between the brush electrode and the handle electrode. The hair is planted directly on the first electrode.
- the brush portion includes a plurality of brush electrodes (the first electrode and the second electrode). Therefore, even if the direction of the electronic toothbrush is changed during brushing, the liquid in the oral cavity and the brush electrode are easily brought into contact with each other. Furthermore, the bristles are directly attached to the first electrode. Therefore, even if the hair is deformed or pulled when brushing, the hair does not leave the first electrode. In addition, since the first electrode is exposed on the surface of the brush portion, the liquid in the oral cavity can easily come into contact with the first electrode due to a capillary phenomenon caused by the gap between the hairs. Therefore, it is possible to flow a current stably in the oral cavity.
- the first electrode includes a protruding portion that protrudes outward from the surface of the brush portion.
- the hair is planted directly on the protrusion.
- the area of the first electrode that comes into contact with the liquid in the oral cavity is increased as compared with the case where there is no protrusion, and current flows easily in the oral cavity. Further, as compared with the case where the first electrode is recessed inward from the surface of the brush portion, the first electrode is less likely to accumulate dirt.
- the power source has a first pole electrically connected to the brush electrode and a second pole electrically connected to the handle electrode.
- the handle includes a protrusion for attaching the brush portion to the handle.
- the protrusion has electrical conductivity and is electrically connected to the first pole of the power source housed in the handle.
- the brush portion has conductivity and includes a connection portion that electrically connects the protrusion and the brush electrode.
- the connecting portion integrally includes a terminal block in which a recess into which the protrusion is fitted and the brush electrode.
- the number of parts is reduced as compared with the case where the terminal block, the brush electrode, and the connection part are separate parts. Therefore, the manufacturing cost is reduced. Further, the reliability of electrical connection between the protrusion and the brush electrode is improved.
- the power source has a first pole electrically connected to the brush electrode and a second pole electrically connected to the handle electrode.
- the handle includes a protrusion for attaching the brush portion to the handle.
- the protrusion has electrical conductivity and is electrically connected to the first pole of the power source housed in the handle.
- the brush portion includes a terminal block having a recess into which the protrusion fits, a connection portion for electrically connecting the protrusion fitted in the recess to the brush electrode, and a brush to which the terminal block and the connection portion are attached. And a main body.
- the terminal block and the brush body are separate parts. Therefore, the dimensional accuracy of the terminal block (that is, the dimensional accuracy of the recess) is not affected by the complexity of the shape of the brush body. Therefore, the dimensional accuracy of the recess can be improved.
- the electronic toothbrush 10 includes a brush part 20 having a flocked region in which toothbrushing hairs 22 are planted, and a handle 30 that holds the brush part 20.
- the left side in FIG. 1 is defined as the front side of the electronic toothbrush 10
- the right side in FIG. 1 is defined as the back side of the electronic toothbrush 10.
- 1 and 2B is defined as the longitudinal direction of the electronic toothbrush 10
- the horizontal direction in FIG. 2B is defined as the short direction of the electronic toothbrush 10.
- the handle 30 includes a cylindrical handle body 31.
- the handle main body 31 is formed of an insulating material.
- the handle body 31 includes a handle electrode 32.
- the handle electrode 32 is exposed on the back surface of the handle 30 so as to come into contact with the user's hand holding the handle 30.
- the handle 30 includes a drive device 33, a circuit board 34, and a power source 35.
- the drive device 33, the circuit board 34, and the power source 35 are accommodated in the handle body 31.
- the handle body 31 has a waterproof structure that prevents water from entering the handle body 31.
- the driving device 33 includes a shaft 331 connected to the brush unit 20.
- the drive device 33 reciprocates the shaft 331 along the longitudinal direction. That is, the drive device 33 reciprocates the brush unit 20 along the longitudinal direction.
- the tip of the shaft 331 has a protrusion 332 for attaching the brush unit 20.
- the protrusion 332 protrudes outward from the tip of the case 31.
- the protrusion 332 and the shaft 331 are formed of a conductive material.
- the protrusion 332 has a recess 333 on the front surface for locking the brush portion 20.
- the driving device 33 can be a motor or an actuator using a magnetic circuit.
- the circuit board 34 has a control circuit (not shown) for controlling the driving device 33.
- the control circuit includes, for example, a switch (not shown). If the switch is on, the control circuit supplies power from the power source 35 to the driving device 33 in order to drive the driving device 33. If the switch is off, the control circuit does not supply power from the power source 35 to the driving device 33.
- the circuit board 34 includes a booster circuit, a current limiting circuit, and the like as necessary.
- the electronic toothbrush 10 of the present embodiment is an electric toothbrush provided with a configuration (a driving device 33 and a circuit board 34) for automatically reciprocating the brush unit 20.
- the electronic toothbrush 10 does not necessarily have a configuration for automatically reciprocating the brush unit 20. That is, the electronic toothbrush 10 may be a manual toothbrush.
- the power source 35 is a DC power source having a positive electrode (second pole) 351 and a negative electrode (first pole) 352.
- a primary battery dry battery
- a secondary battery lithium ion battery or nickel cadmium battery
- the power source 35 can be charged using a non-contact power feeding technique.
- the power source 35 is a primary battery, it is preferable that the power source 35 can be easily replaced.
- the protrusion 332 is electrically connected to the negative electrode 351 of the power source 35 through the shaft 331 and an electric circuit (not shown) formed on the circuit board 34.
- the handle electrode 32 is electrically connected to the positive electrode 352 of the power source 35 through an electric circuit (not shown) formed on the circuit board 34.
- the brush part 20 includes a brush body 21, a plurality of tooth brushing hairs (hair bundles) 22, a first electrode 23, and a connection part 24. .
- the brush body 21 is made of an insulating material.
- the brush body 21 includes a head portion 211 and a neck (shank) portion 212 formed in a rod shape.
- the head portion 211 is formed integrally with the tip end (first end in the longitudinal direction) of the neck portion 212.
- the rear end (second end in the longitudinal direction) of the neck portion 212 includes a recess 213 into which the protrusion 332 fits.
- the inner surface of the recess 213 includes a locking portion 2131 that fits into the recess 333 of the projection 332 that fits into the recess 213.
- a relief groove 214 is formed on the rear side of the neck portion 212 so that the locking portion 2131 elastically contacts the front surface of the protrusion 332. Since the protrusion 332 is locked by fitting the locking portion 2131 into the recess 333, the brush portion 20 is not easily detached from the handle 30. Further, a click feeling can be obtained when the brush unit 20 is attached to the handle 30.
- the neck portion 212 includes a storage portion 215 that stores the connection portion 24.
- the storage portion 215 communicates with the recess 213 on the rear side of the neck portion 212.
- the storage portion 215 communicates with the outside on the back side of the neck portion 212.
- a cover 216 that closes the storage unit 215 is attached to the back surface of the storage unit 215.
- the cover 216 is made of an insulating resin material. The cover 216 is attached to the neck portion 212 so that water does not enter the storage portion 215.
- An elongated opening 217 is formed on the front side of the front surface of the neck portion 212 (the end on the head portion 211 side) so that the connection portion 24 faces the outside.
- the hair 22 is planted on the front surface of the head portion 211.
- the hair 22 is formed using a synthetic fiber, for example.
- the synthetic fiber is, for example, a polyamide synthetic fiber such as nylon.
- the first electrode 23 is embedded in the head portion 211. As shown in FIG. 2B, the first electrode 23 includes an exposed portion 231 exposed to the outside from the front surface of the head portion 211 and a contact piece 232 exposed to the storage portion 215 of the neck portion 212.
- the exposed portion 231 is located in the central portion of a region where the hair 22 is planted in the head portion 211 (hereinafter referred to as “hair transplant region”). Therefore, the hair 22 is directly planted on both the head portion 211 and the exposed portion 231.
- the outer peripheral shape of the exposed portion 231 is a substantially rectangular shape.
- the front surface of the exposed portion 231 and the front surface of the head portion 211 are located on the same plane.
- the connecting portion 24 is formed in a long and narrow plate shape with a conductive material.
- the connecting portion 24 is housed in the housing portion 215 of the neck portion 212 as shown in FIG.
- the first end portion in the longitudinal direction of the connection portion 24 (the upper end portion in FIG. 2A) is in contact with the contact piece 232 of the first electrode 23.
- a second end portion in the longitudinal direction of the connection portion 24 (a lower end portion in FIG. 2A) includes a contact terminal 241 that faces the recess 213.
- the contact terminal 241 elastically contacts the protrusion 332 fitted in the recess 213. Therefore, the contact reliability between the connecting portion 24 and the protrusion 332 is improved.
- the connecting portion 24 has a portion exposed to the outside from the opening 217 of the neck portion 212. In the connection portion 241, a portion exposed to the outside from the opening 217 becomes the second electrode 242.
- the brush unit 20 includes the first electrode 23 and the second electrode 242 as brush electrodes exposed on the surface of the brush unit 20.
- the first electrode 23 is located in a flocked region where the hair 22 is planted.
- the second electrode 242 is located in a non-planted region where the hair 22 is not planted.
- the hair 22 is directly planted in the exposed part 231 of the 1st electrode 23 which is a brush electrode located in a hair transplant area
- the protrusion 332 of the handle 30 When attaching the brush part 20 to the handle 30, as shown in FIG. 1, the protrusion 332 of the handle 30 may be fitted into the recess 213 of the brush part 20. Thereby, the brush part 20 is attached to the tip of the handle 30. In a state where the brush unit 20 is attached to the handle 30, the contact terminal 241 of the connection unit 24 contacts the protrusion 332.
- the brush electrodes (the first electrode 23 and the second electrode 242) are electrically connected to the negative electrode 352 of the power source 35.
- the handle electrode 32 is electrically connected to the positive electrode 351 of the power source 35. That is, a voltage is applied between the brush electrode and the handle electrode 32 by the power source 35.
- the polarity of the brush electrode and the handle electrode 32 is different.
- the electronic toothbrush 10 since the electronic toothbrush 10 includes the first electrode 23 and the second electrode 242 as brush electrodes, the electronic toothbrush 10 constitutes two electric paths that allow current to flow into the oral cavity.
- a current flows from the handle electrode 32 to the first electrode 23 through the human body.
- a current flows from the handle electrode 32 to the second electrode 242 through the human body.
- the electronic toothbrush 10 of this embodiment has the 1st electrode 23 exposed to the flocked area
- FIG. Therefore, the first electrode 23 is located near the teeth and gums in the oral cavity when brushing teeth. Therefore, the liquid in the oral cavity can easily come into contact with the first electrode 23, and an electric current easily flows in the oral cavity.
- the hairs 22 are planted directly on the first electrode 23. Therefore, even if the hair 22 is deformed or pulled during brushing, the hair 22 remains in contact with the first electrode 23. Therefore, the liquid in the oral cavity easily comes into contact with the first electrode 23 due to the capillary phenomenon generated by the gap between the hairs 22.
- the liquid in the oral cavity moves from the head portion 211 to the neck portion 212 by gravity.
- the contact between the liquid in the oral cavity and the first electrode 23 may become unstable, and current may not flow in the oral cavity.
- the electronic toothbrush 10 has the second electrode 242 at the neck portion 212. Therefore, the liquid in the oral cavity that has moved from the head portion 211 to the neck portion 212 comes into contact with the second electrode 242. Thus, even if the liquid in the oral cavity does not contact the first electrode 23, the liquid contacts the second electrode 242.
- the second electrode 242 is provided in the opening 217 formed in the neck portion 212. In such an opening 217, the liquid in the oral cavity is likely to accumulate, so that the liquid in the oral cavity can easily come into contact with the second electrode 242.
- the liquid in the oral cavity contacts either the first electrode 23 or the second electrode 242.
- the liquid in the oral cavity and the brush electrode are easily brought into contact with each other, so that a current can be stably flowed into the oral cavity.
- the electronic toothbrush 10 weakens the adhesion between the tooth surface and the plaque to facilitate the removal of the plaque. Further, the electronic toothbrush 10 improves the metabolism of the soft tissue in the oral cavity and improves blood circulation, and improves the hygiene condition in the oral cavity.
- the portion of the connection portion 24 that faces the outside from the opening 217 is used as the second electrode 242.
- the second electrode 242 may be a separate member that is electrically connected to the connection portion 24.
- the second electrode 242 may be formed so as to fit into the opening 217 or may be formed so as to cover the inner peripheral surface of the opening 217.
- the material of the first electrode 23, the second electrode 242, and the handle electrode 32 is not limited to metal, and may be conductive resin or rubber. In short, the first electrode 23, the second electrode 242, and the handle electrode 32 may be conductive.
- 3 to 8 show modified examples of the brush portion 20.
- the exposed portion 231 occupies the entire region of the flocked region. That is, the front surface of the exposed portion 231 is a flocked region.
- the outer peripheral shape of the exposed portion 231 is substantially square, and the area of the exposed portion 231 exposed on the front surface of the head portion 211 is smaller than the example shown in FIGS.
- the exposed part 231 is located on the tip side of the head part 211.
- the first electrode 23 includes two exposed portions 231. The two exposed portions 231 are separated from each other in the short direction of the electronic toothbrush 10. That is, the exposed part 231 should just be located in the flocking area
- the first electrode 23 is provided on the tip (first end in the longitudinal direction) side of the head portion 211 in addition to the exposed portion (first exposed portion) 231.
- An exposed portion (second exposed portion) 233 that is exposed to the outside from the side surface.
- the first electrode 23 is a third exposed portion (not shown) exposed to the outside from the back surface of the head portion 211 instead of the second exposed portion 233 or in addition to the second exposed portion 233. Or a fourth exposed portion that is exposed to the outside from the side surface in the short-side direction.
- the front surface of the exposed portion 231 is located in front of the front surface of the head portion 211. That is, the exposed portion 231 becomes a protruding portion that protrudes outward from the surface of the brush portion 20.
- the liquid in the oral cavity is larger than the case where there is no protrusion as shown in FIG. 2 (when the front surface of the exposed part 231 and the front surface of the head part 211 are on the same plane).
- the area of the first electrode 23 in contact with is increased. Therefore, an electric current easily flows in the oral cavity.
- the first electrode 23 may be formed so that the entire front surface of the exposed portion 231 protrudes forward from the front surface of the head portion 211 as in the example shown in FIG. Further, the first electrode 23 may be formed such that a part of the front surface of the exposed portion 231 protrudes forward from the front surface of the head portion 211.
- the brush portion 20 ⁇ / b> A includes a terminal block 25 in addition to the brush body 21 ⁇ / b> A, the plurality of bristles 22, the first electrode 23, and the connection portion 24.
- the terminal block 25 is made of an insulating resin material.
- the terminal block 25 includes a recess 213 and a clearance groove 214.
- the inner surface of the recess 213 includes a locking portion 2131.
- the brush body 21A includes a head portion 211 and a neck portion 212A.
- the neck portion 212 ⁇ / b> A includes a recess 218 into which the terminal block 25 fits in place of the recess 213.
- the recess 218 and the storage portion 215 communicate with each other.
- the recess 213 of the terminal block 25 and the storage portion 215 communicate with each other.
- terminal block 25 and the connecting portion 24 are attached to the brush body 21A. Therefore, in the brush portion 20A, the portion where the recess 213 is formed (terminal block 25) and the brush body 21 are separate parts.
- the dimensional accuracy of the terminal block 25 (that is, the dimensional accuracy of the recess 213 and the locking portion 2131) is not affected by the complexity of the shape of the brush body 20A.
- the brush portion 20A shown in FIG. 6 although the inner shape of the brush body 20A is complicated in order to insert the connecting portion 24 into the brush body 20A, the recess 213 and the engagement portion 213 are engaged.
- the dimensional accuracy of the stop part 2131 can be improved. As a result, the force required when attaching the brush part 20 to the handle 30 or removing the brush part 20 from the handle 30 and the variation in click feeling when attaching the brush part 20 to the handle 30 (variation from product to product) Less.
- the brush portion 20B includes a brush body 21B, a plurality of bristles 22, a first electrode 23, a connection portion 24B, and a terminal block 25.
- the connecting portion 24B is formed of a conductive material.
- the connecting portion 24B is integrally provided with the first electrode 23 at the tip (first end in the longitudinal direction) and the terminal block 25 is integrally provided at the rear end (second end in the longitudinal direction).
- the terminal block 25 is formed of a conductive material.
- the brush body 21B is formed in a rod shape from an insulating resin material. In the brush body 21B, a connecting portion 24B integrally including the first electrode 23 and the terminal block 25 is embedded.
- the brush body 21B includes a head portion 211B and a neck portion 212B.
- the head portion 211B has a first exposure hole 261.
- the first exposure hole 261 exposes the front surface of the exposed portion 231 of the first electrode 23 to the outside.
- the neck portion 212B has a second exposure hole 262 and an opening 217.
- the second exposure hole 261 exposes the surface of the terminal block 25 where the recess 213 is formed (the rear surface of the connecting portion 24B, the lower surface in FIG. 7A) to the outside. Also in the brush part 20 ⁇ / b> B, the part of the connection part 24 ⁇ / b> B exposed to the outside from the opening 217 becomes the second electrode 242.
- connection portion 24B includes the terminal block 25 in which the recess 213 into which the protrusion 332 is fitted, and the brush electrode (the first electrode 23 and the second electrode 242). And integrated.
- the brush part 20B when the terminal block 25, the brush electrodes (the first electrode 23 and the second electrode 242), and the connection part 24 are separate parts (brush part 20A shown in FIG. 6). In comparison, the number of parts is reduced. Therefore, the manufacturing cost of the brush portion 20B is lower than that of the brush portion 20A. In particular, since the terminal block 25 has conductivity, the contact reliability between the connecting portion 24B and the protrusion 332 is improved. Thereby, the reliability of the electrical connection between the protrusion 332 and the brush electrode is improved.
- the terminal block 25 and the brush body 21B are separate parts. Therefore, the dimensional accuracy of the terminal block 25 (that is, the dimensional accuracy of the recess 213 and the locking portion 2131) is not affected by the complexity of the shape of the brush body 20B. Therefore, according to the brush part 20B, the dimensional accuracy of the recess 213 and the locking part 2131 can be improved similarly to the brush part 20A.
- the brush portion 20C includes a brush body 21C, a plurality of bristles 22, a first electrode 23, and a connection portion 24C.
- the connecting portion 24C is formed of a conductive material.
- the connecting portion 24C is integrally provided with a first electrode 23 at the tip (first end in the longitudinal direction).
- the connection portion 24 ⁇ / b> C includes a first groove 243 on the rear side (second end in the longitudinal direction) side of the front surface.
- the brush body 21C is formed in a rod shape from an insulating resin material.
- a connecting portion 24 ⁇ / b> C that is integrally provided with the first electrode 23 is embedded in the brush body 21 ⁇ / b> C.
- the brush body 21C includes a head portion 211B and a neck portion 212C.
- the neck portion 212C includes a second groove 219 facing the first groove 243 of the connection portion 24C.
- the inner surface of the second groove 219 includes a locking portion 2131.
- the neck portion 212 ⁇ / b> C has a clearance groove 214 and an opening 217. Also in the brush portion 20 ⁇ / b> C, the portion of the connection portion 24 ⁇ / b> C exposed to the outside from the opening 217 becomes the second electrode 242.
- a space formed by the first groove 243 and the second groove 219 is a recess 213. Accordingly, the protrusion 332 is sandwiched between the connecting portion 24C and the brush body 21C. At this time, the protrusion 332 is pressed against the connecting portion 24 ⁇ / b> C by the locking portion 2131. Therefore, the contact reliability between the connecting portion 24C and the protrusion 332 is improved.
- the connecting portion 24C is integrally provided with brush electrodes (the first electrode 23 and the second electrode 242). Further, the recess 213 into which the protrusion 332 fits is configured by a first groove 243 of the connection portion 24C and a second groove 219 of the neck portion 212.
- the brush part 20C is used when the terminal block 25, the brush electrodes (the first electrode 23 and the second electrode 242), and the connection part 24 are separate parts (brush part 20A shown in FIG. 6). In comparison, the number of parts is reduced. For this reason, the manufacturing cost of the brush portion 20C is lower than that of the brush portion 20A, and the reliability of electrical connection between the protrusion 332 and the brush electrode is improved.
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Abstract
Description
Claims (4)
- 歯磨き用の毛が植えられる植毛領域を有するブラシ部と、
前記ブラシ部を保持するハンドルとを備え、
前記ブラシ部は、前記ブラシ部の表面に露出するブラシ電極を備え、
前記ハンドルは、前記ハンドルの表面に露出するハンドル電極を備え、
前記ハンドルには、前記ブラシ電極と前記ハンドル電極との間に電圧を印加する電源が収納される電子歯ブラシであって、
前記ブラシ電極として、前記植毛領域に位置する第1の電極と、前記毛が植えられていない非植毛領域に位置する第2の電極とを備え、
前記毛は、前記第1の電極に直接的に植えられることを特徴とする電子歯ブラシ。 - 前記第1の電極は、前記ブラシ部の表面より外方に突出する突出部を備え、
前記毛は、前記突出部に直接的に植えられることを特徴とする請求項1記載の電子歯ブラシ。 - 前記電源は、前記ブラシ電極に電気的に接続される第1の極と、前記ハンドル電極に電気的に接続される第2の極とを有し、
前記ハンドルは、前記ブラシ部を前記ハンドルに取り付けるための突起を備え、
前記突起は、導電性を有し、前記ハンドルに収納された前記電源の前記第1の極に電気的に接続され、
前記ブラシ部は、導電性を有し、前記突起と前記ブラシ電極とを電気的に接続する接続部を備え、
前記接続部は、前記突起が嵌る凹所が形成された端子台と、前記ブラシ電極とを一体に備えることを特徴とする電子歯ブラシ。 - 前記電源は、前記ブラシ電極に電気的に接続される第1の極と、前記ハンドル電極に電気的に接続される第2の極とを有し、
前記ハンドルは、前記ブラシ部を前記ハンドルに取り付けるための突起を備え、
前記突起は、導電性を有し、前記ハンドルに収納された前記電源の前記第1の極に電気的に接続され、
前記ブラシ部は、前記突起が嵌る凹所を有する端子台と、前記凹所に嵌った前記突起を前記ブラシ電極に電気的に接続する接続部と、前記端子台および前記接続部が取り付けられるブラシ本体とを備えることを特徴とする請求項1記載の電子歯ブラシ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009801040037A CN101932265A (zh) | 2008-04-15 | 2009-04-15 | 电牙刷 |
US12/735,583 US8413285B2 (en) | 2008-04-15 | 2009-04-15 | Electronic toothbrush |
EP09731524A EP2263496A4 (en) | 2008-04-15 | 2009-04-15 | ELECTRONIC TOOTHBRUSH |
JP2010508230A JP5314675B2 (ja) | 2008-04-15 | 2009-04-15 | 電子歯ブラシ |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
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JP2008105990 | 2008-04-15 | ||
JP2008-105988 | 2008-04-15 | ||
JP2008105989 | 2008-04-15 | ||
JP2008-105989 | 2008-04-15 | ||
JP2008105988 | 2008-04-15 | ||
JP2008-105990 | 2008-04-15 |
Publications (1)
Publication Number | Publication Date |
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WO2009128477A1 true WO2009128477A1 (ja) | 2009-10-22 |
Family
ID=41199165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/057597 WO2009128477A1 (ja) | 2008-04-15 | 2009-04-15 | 電子歯ブラシ |
Country Status (5)
Country | Link |
---|---|
US (1) | US8413285B2 (ja) |
EP (1) | EP2263496A4 (ja) |
JP (1) | JP5314675B2 (ja) |
CN (1) | CN101932265A (ja) |
WO (1) | WO2009128477A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012135377A (ja) * | 2010-12-24 | 2012-07-19 | Panasonic Corp | 導電性歯ブラシ |
EP2384707B1 (en) * | 2010-05-06 | 2018-08-01 | Braun GmbH | Tongue cleaning device |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5282062B2 (ja) * | 2010-03-25 | 2013-09-04 | パナソニック株式会社 | 電動歯ブラシ |
US8966710B1 (en) * | 2012-01-24 | 2015-03-03 | Silvestre Lozano | Skin cleaning assembly |
EP2868293B1 (de) * | 2013-10-30 | 2017-08-30 | Trisa Holding AG | Elektrisch betriebene Zahnbürste zur Zahnpflege |
JP6612791B2 (ja) | 2014-07-02 | 2019-11-27 | コーニンクレッカ フィリップス エヌ ヴェ | 自動式歯ブラシのためのシャフト |
EP2976965A1 (en) * | 2014-07-22 | 2016-01-27 | Braun GmbH | Fastenable device for oral cavity position detection |
CH711557A1 (en) * | 2015-09-22 | 2017-03-31 | Curaden Ag | Brush head for a sonic toothbrush. |
US10639467B2 (en) * | 2017-06-27 | 2020-05-05 | Colgate-Palmolive Company | Oral care implement |
US11812845B2 (en) * | 2020-06-15 | 2023-11-14 | Church & Dwight Co., Inc. | Ionic toothbrush |
CN112336489A (zh) * | 2020-11-11 | 2021-02-09 | 慈溪赛嘉电子有限公司 | 电力牙刷装置 |
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JPH10192055A (ja) * | 1997-01-06 | 1998-07-28 | Kitano Seisaku Kk | 電子歯ブラシ |
US20030226223A1 (en) * | 2002-06-11 | 2003-12-11 | The Procter & Gamble Co. | High efficiency electric toothbrush |
CA2530337C (en) * | 2003-06-27 | 2013-05-28 | Joseph Grez | Power toothbrush using acoustic wave action for cleansing of teeth |
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- 2009-04-15 WO PCT/JP2009/057597 patent/WO2009128477A1/ja active Application Filing
- 2009-04-15 JP JP2010508230A patent/JP5314675B2/ja active Active
- 2009-04-15 EP EP09731524A patent/EP2263496A4/en not_active Withdrawn
- 2009-04-15 CN CN2009801040037A patent/CN101932265A/zh active Pending
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EP2384707B1 (en) * | 2010-05-06 | 2018-08-01 | Braun GmbH | Tongue cleaning device |
JP2012135377A (ja) * | 2010-12-24 | 2012-07-19 | Panasonic Corp | 導電性歯ブラシ |
Also Published As
Publication number | Publication date |
---|---|
EP2263496A4 (en) | 2012-06-27 |
JPWO2009128477A1 (ja) | 2011-08-04 |
US20110016648A1 (en) | 2011-01-27 |
CN101932265A (zh) | 2010-12-29 |
EP2263496A1 (en) | 2010-12-22 |
US8413285B2 (en) | 2013-04-09 |
JP5314675B2 (ja) | 2013-10-16 |
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