JP2011200466A - Brush body and toothbrush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a brush body and toothbrush that have a structure allowing for current to easily flow from conductive bristles to oral tissues or enhance ionization of electrolytic medicinal components.SOLUTION: The brush body 10 includes a mixed bristle bundle 70 arranged on an anchoring surface 13 and including conductive bristles 30 having conductive properties and insulative bristles 40 having insulation properties. A reference plane is set on the anchoring surface 13. The conductive bristles 30 have a height from the reference plane, and the insulative bristles 40 have a height from the reference plane that differs from the height of the conductive bristles.

Description

  The present invention relates to a brush body in which a conductive bristle having conductivity and an insulating bristle having insulation are provided on a flocked surface, and a toothbrush including the brush body.

The thing of patent document 1 is known as an example of the said toothbrush.
In the toothbrush of patent document 1, the conductive bristle bundle which has electroconductivity is provided in the center of the brush body.

JP 2006-223369 A

  By the way, when brushing is performed using a dentifrice containing an electrolytic medicinal component having an oral bactericidal effect, the medicinal component is attracted to the tooth surface and gums by the action of electric current, so that the effect of buccal sterilization is improved. The effect of preventing periodontal disease can be expected by sterilizing the oral cavity, particularly the gums.

  On the other hand, when the conductive bristle is in direct contact with the gums as, for example, tissue in the oral cavity during brushing, a massage effect can be obtained by energizing the gums from the conductive bristle, so that an anti-inflammatory effect on the gums can be expected.

  However, in the toothbrush of patent document 1, since the conductive bristle is provided in the center of the brush body in which the heights of the bristles are uniformly arranged, the toothpaste is placed on the bristles bundle of the brush body and brushed. When brushing, the dentifrice on each of the conductive bristle and the insulating bristle is rubbed onto the tooth surface simultaneously. For this reason, it is difficult to efficiently transfer the electrolytic medicinal component in the dentifrice by energization from the conductive bristle.

  In addition, when the conductive bristle is brought into contact with the gums or the like, the insulating bristle around the bristle comes into contact first, so that it is difficult to obtain a massage effect by energization from the conductive bristle to the gums or the like.

  The present invention has been made paying attention to the above-mentioned problems, and the purpose thereof is a structure in which electric conduction from a conductive bristle to a tissue in the oral cavity is easily performed, and a structure in which an electric current is easily applied to an electrolytic medicinal component. It is providing the brush body and toothbrush which have at least one of these.

  The brush body of the present invention is a brush body in which a mixed bristle bundle including a conductive bristle having conductivity and an insulating bristle having insulation is provided on a flocked surface, and the conductive material is based on a reference surface of the flocked surface. The height of the insulating bristle and the height of the insulating bristle with respect to the reference plane are different from each other.

  In the brush body, in the brush body in which a conductive bristle bundle including a plurality of conductive bristle having conductivity and an insulating bristle bundle including a plurality of insulating bristles having insulation are provided on a flocked surface, the flocking is performed. Preferably, the height of the conductive bristle bundle with respect to the reference plane of the surface is different from the height of the insulating bristle bundle with respect to the reference plane.

  In this brush body, in the brush body in which a mixed bristle bundle including a conductive bristle having conductivity and an insulating bristle having insulation is provided on the flocked surface, the reference surface of the flocked surface in one mixed bristle bundle The height of the conductive bristle with respect to the reference plane is different from the height of the insulating bristle with respect to the reference plane, and the height of the mixed bristle bundle with respect to the reference plane and the reference plane It is preferable that the other mixed bristle bundles have different heights from each other.

  In this brush body, the conductive bristle includes a conductive core portion and an insulating covering portion, the core portion is covered with the covering portion, and a tip end of the core portion extends from the covering portion. It is preferable that it protrudes.

  In this brush body, the height of the insulating bristle with respect to the reference plane is lower than the height of the conductive bristle with respect to the reference plane, so that the toothbrush is applied to the tip of the insulating bristle. It is preferable that a reservoir for storing the agent is formed.

  In this brush body, the height of the conductive bristle relative to the reference plane is lower than the height of the insulating bristle relative to the reference plane, so that the dentifrice is applied to the conductive bristle tip portion. It is preferable that the storage part which stores is formed.

  The toothbrush of this invention is a toothbrush containing the said brush body.

  According to the present invention, it is possible to provide a brush body and a toothbrush having at least one of a structure in which electric conduction from a conductive bristle to a tissue in the oral cavity is easily performed and a structure in which ionization of an electrolytic medicinal component is easily promoted. it can.

Sectional drawing which shows the cross-sectional structure about 1st Embodiment of the toothbrush of this invention. The block diagram which shows the circuit structure of the toothbrush of the embodiment. It is a figure of the brush body of the toothbrush of the embodiment, (a) is sectional drawing, (b) is an enlarged view of a bristle front-end | tip part, (c) is an enlarged view of (b). Regarding the bristle tip of the toothbrush of the embodiment, (a) is an enlarged view before the dentifrice placed on the bristle tip is consumed, and (b) is a part of the dentifrice placed on the bristle tip. Enlarged view after being consumed. (A) is sectional drawing of a toothbrush, (b) is an enlarged view of an electroconductive bristle front-end | tip part, (c) is an enlarged view of an insulating bristle front-end | tip about 2nd Embodiment of the toothbrush of this invention. Regarding the bristle tip of the toothbrush of the embodiment, (a) is an enlarged view before the dentifrice placed on the bristle tip is consumed, and (b) is a part of the dentifrice placed on the bristle tip. Enlarged view after being consumed. (A) is sectional drawing of a toothbrush, (b) is an enlarged view of an electroconductive bristle front-end | tip part, (c) is an enlarged view of an insulating bristle front-end | tip about 3rd Embodiment of the toothbrush of this invention. Sectional drawing of the brush body which mounted the dentifrice of the toothbrush of 3rd Embodiment in the dentifrice use state on the bristle front-end | tip part. It is a figure of the brush body of the toothbrush in the modification which materialized this invention, (a) is sectional drawing, (b) is an enlarged view of an electroconductive bristle front-end | tip part, (c) is an enlarged view of an insulating bristle front-end | tip part. . Sectional drawing of the brush body of the toothbrush in the modification which materialized this invention.

(First embodiment)
A first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the electric toothbrush 1 is an electric toothbrush in which a brush body 10 can be detachably attached to a distal end portion of a grip body 20 that can be gripped by a user. Brushing is performed by vibrating the brush body 10 by a vibration actuator 22 incorporated in the grip body 20.

  The grip body 20 is formed in a substantially columnar shape in consideration of user grip and the like. The grip body 20 is provided with a grip electrode 21 that comes into contact with the outer surface by grip, a switch 26 that is operated by a user, and an LED 27 that indicates an operating state. Inside the grip body 20, a vibration actuator 22, a battery 24 that supplies power to the circuit unit 25, and a circuit unit 25 that controls supply of power to the vibration actuator 22 and the like are provided. The output shaft 23 of the vibration actuator 22 protrudes from the tip of the grip body 20. The output shaft 23 is inserted into the brush body 10.

  The brush body 10 includes a brush handle 12 connected to the grip main body portion 20, a head portion 11 formed integrally with the brush handle 12, and a plurality of mixed bristle bundles 70 planted in the head portion 11.

  Inside the head portion 11, a conductive member 14 is provided in which the base end portion of each mixed bristle bundle 70 is planted. Inside the brush handle 12, there are a connection terminal 15 for electrically connecting the conductive member 14 to the output shaft 23 of the grip body 20, and an insertion hole 16 as a space for inserting the output shaft 23. Is provided.

  In the electric toothbrush 1, the brush body 10 is attached to the grip body 20 by inserting the output shaft 23 of the grip body 20 into the insertion hole 16 of the brush body 10. At this time, the conductive member 14 is electrically connected to the battery 24 via the connection terminal 15 and the output shaft 23.

FIG. 2 shows a circuit configuration of the electric toothbrush 1.
The circuit unit 25 of the electric toothbrush 1 is provided with a control circuit 25a electrically connected to the gripping electrode 21, and a charging circuit 25b and a power supply circuit 25c electrically connected to the control circuit 25a. The power supply circuit 25 c receives power supply from the battery 24. The charging circuit 25b supplies power to the battery 24.

  When the user uses the electric toothbrush 1, the following electric circuit is formed by the user and the electric toothbrush 1. That is, the grip electrode 21 of the grip main body 20 gripped by the user's hand, the control circuit 25a of the circuit section 25, the output shaft 23 of the grip main body section 20, the connection terminal 15 of the brush body 10, the conductive member 14, An electric circuit composed of the mixed bristle bundle 70, saliva in the oral cavity, tissues such as gums, and the human body is formed. When the control circuit 25a applies a DC voltage having a predetermined magnitude, a current flows through the electric circuit.

FIG. 3 shows an enlarged structure of the head portion 11 and the mixed bristle bundle 70.
As shown in FIG. 3A, the base end portions of the conductive bristle 30 and the insulating bristle 40 are implanted in the conductive member 14 via the flocked surface 13 which is the surface of the head portion 11. The flocked surface 13 is formed as a smooth surface along the longitudinal direction of the electric toothbrush 1.

  As shown in FIG. 3B, the mixed bristle bundle 70 is configured as a bundle of bristles in which a plurality of conductive bristles 30 that are conductive bristles and a plurality of insulating bristles 40 having insulation properties are mixed. ing. The insulating bristle 40 is made of a flexible insulating resin such as polyamide resin or polybutylene terephthalate resin.

  As shown in FIG. 3C, the conductive bristle 30 has a core portion 31 formed of a flexible conductive resin such as a carbon-containing polyamide resin or a carbon-containing polybutylene terephthalate resin. Yes.

  The periphery of the core portion 31 is covered with a covering portion 33. The covering portion 33 is formed of a flexible insulating resin such as polyamide resin not containing carbon or polybutylene terephthalate resin.

  The leading end portion 32 of the core portion 31 protrudes from the leading end portion of the covering portion 33. The proximal end portion of the core portion 31 protrudes from the proximal end portion of the covering portion 33. That is, the periphery of the distal end portion 32 and the proximal end portion of the core portion 31 is not covered with the covering portion 33. Since the periphery of the base end portion of the core portion 31 is not covered with the covering portion 33, each conductive bristle 30 is electrically connected to the conductive member 14.

  As shown in FIG. 3B, the conductive bristle 30 and the insulating bristle 40 constituting the mixed bristle bundle 70 are different from each other in height based on the flocked surface 13 as the reference surface of the head portion 11. That is, the height from the flocked surface 13 to the tip of the insulating bristle 40 is greater than the height from the flocked surface 13 to the tip of the conductive bristle 30. Due to this height difference, a reservoir 34 is formed at the tip of the conductive bristle 30.

  The height direction means a direction in which the conductive bristle 30 and the insulating bristle 40 extend as shown in FIG. The reference plane shows the following. That is, among the virtual surfaces along the longitudinal direction of the electric toothbrush 1, a surface that passes through the highest portion of the flocked surface 13 when the surface opposite to the flocked surface 13 in the head portion 11 is used as a reference in the height direction. Show.

  In the electric toothbrush 1, since the flocked surface 13 is formed as a smooth surface along the longitudinal direction, the highest position of the flocked surface 13 is the same throughout the flocked surface 13. For this reason, the flocked surface 13 and the reference surface coincide.

With reference to FIG. 4, the usage form of the electric toothbrush 1 using the dentifrice 80 is demonstrated.
As shown in FIG. 4A, when the user places the dentifrice 80 on the tip of the mixed bristle bundle 70 prior to the start of brushing, a part of the dentifrice 80 is stored in the storage portion 34.

  As shown in FIG. 4B, when the brushing is performed by the user, a part of the dentifrice 80 is consumed. At this time, the dentifrice 80 stored in the storage section 34 is less likely to be consumed than the dentifrice 80 outside the storage section 34, that is, the dentifrice 80 at the tip of the insulating bristle 40. For this reason, while the dentifrice 80 mounted on the front-end | tip part of the insulating bristle 40 is consumed, an electric current acts on the dentifrice 80 of the storage part 34 by electricity supply.

  When a dentifrice 80 containing an electrolytic medicinal component is used, ions are attracted to the oral tissue by the action of electric current. When this ion has a bactericidal action, the oral cavity is sterilized by the ion. An example of such an electrolytic medicinal component is cetylpyridinium chloride.

According to the toothbrush of the said embodiment, the following effects can be acquired.
(1) In the electric toothbrush 1, the height of the conductive bristle 30 with respect to the reference surface is lower than the height of the insulating bristle 40 with respect to the reference surface, so that the toothbrush is applied to the tip of the conductive bristle 30. A reservoir 34 for storing the agent 80 is formed.

  Thereby, since the dentifrice 80 of the storage part 34 becomes less consumed than the dentifrice 80 outside the storage part 34 at the time of brushing, an electric current acts easily on the dentifrice 80 of the storage part 34 by electricity supply. Moreover, since a medicinal component is stored in the storage part 34, it is suppressed that it diffuses in the whole oral cavity. Also, medicinal components can be intensively supplied to necessary parts such as gums by the action of electric current.

  (2) The electric toothbrush 1 is provided with a conductive bristle 30 having a structure in which the core portion 31 protrudes from the covering portion 33. Since the core 31 protrudes, the current-carrying area is increased, so that a current can be efficiently applied to the medicinal component. In addition, since the portion other than the tip portion of the core portion 31 is covered with the covering portion 33 that is an insulating member, current is intensively supplied to the tip portion of the core portion 31. Thereby, an electric current can be made to act on a medicinal component now more efficiently.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to FIGS.
The electric toothbrush 1 of this embodiment is equivalent to what changed the structure of the head part 11 of the electric toothbrush of 1st Embodiment. The details of this change are shown below. In addition, since the structure similar to 1st Embodiment is employ | adopted about the other point, about the common structure, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 5 (a), the head portion 11 includes a plurality of conductive bristle bundles 50 and a plurality of insulating bristle bundles 60 that scrape plaque and the like. The base end portions of the conductive bristle bundles 50 and the insulating bristle bundles 60 are implanted in the conductive member 14 via the flocked surface 13 which is the surface of the head portion 11. Further, the conductive bristle bundle 50 and the insulating bristle bundle 60 are provided alternately. Insulative bristle bundles 60 are provided on both outer sides in the longitudinal direction. The flocked surface 13 is formed as a smooth surface along the longitudinal direction of the electric toothbrush 1.

  As shown in FIG. 5B, the conductive bristle bundle 50 is configured as a bundle of a plurality of conductive bristle 30 that is a conductive bristle. Each conductive bristle 30 is electrically connected to the conductive member 14.

As shown in FIG. 5C, the insulating bristle bundle 60 is configured as a bundle of a plurality of insulating bristle 40 having insulating properties.
As shown in FIG. 5A, the conductive bristle bundle 50 and the insulating bristle bundle 60 are different from each other in height with respect to the flocked surface 13 as the reference surface of the head portion 11. That is, the height h from the flocked surface 13 to the tip of the insulating bristle bundle 60 is larger than the height from the flocked surface 13 to the tip of the conductive bristle bundle 50. Due to the difference in height, a reservoir 34 is formed at the tip of the conductive bristle bundle 50.

With reference to FIG. 6, the usage form of the electric toothbrush 1 using the dentifrice 80 is demonstrated.
As shown in FIG. 6A, prior to the start of brushing, when the user places the dentifrice 80 on the tip of the conductive bristle bundle 50 and the insulating bristle bundle 60, a part of the dentifrice 80 is stored in the reservoir 34. It is stored in.

  As shown in FIG.6 (b), when brushing is performed by the user, a part of dentifrice 80 is consumed. At this time, the dentifrice 80 stored in the reservoir 34 is less likely to be consumed than the dentifrice 80 outside the reservoir 34, that is, the dentifrice 80 at the tip of the insulating bristle bundle 60. For this reason, while the dentifrice 80 placed on the tip of the insulating bristle bundle 60 is consumed, an electric current acts on the dentifrice 80 of the storage section 34 by energization.

  When the dentifrice 80 containing an electrolytic medicinal component is used, an electric current acts on the medicinal component and is attracted to the oral tissue. When this medicinal component has a bactericidal action, the oral cavity is sterilized.

According to the toothbrush of the said embodiment, in addition to the effect of (1) and (2) of 1st Embodiment, the following effects can be acquired.
(3) One storage part 34 is larger than the electric toothbrush 1 of the first embodiment. For this reason, an electric current can be made to act on more dentifrice 80 at the time of brushing. In addition, when the user places the dentifrice 80 on the head portion 11 before brushing, it is easy to place the dentifrice 80 only on the latter of the tip of the insulating bristle bundle 60 and the tip of the conductive bristle bundle 50 (reservoir 34). Can be done.

  (4) In the electric toothbrush 1, since the height of the insulating bristle bundle 60 is larger than that of the conductive bristle bundle 50, the tip of the insulating bristle bundle 60 tends to enter the periodontal pocket during brushing. For this reason, compared with the case where the height of the conductive bristle bundle 50 is larger than that of the insulating bristle bundle 60, the effect of removing dirt from the periodontal pocket is enhanced.

  (5) Further, since the insulating bristle bundle 60 is provided outside the conductive bristle bundle 50 in the longitudinal direction of the head portion 11, the insulating bristle bundle 60 easily enters the periodontal pocket during brushing. Therefore, the effect of removing dirt from the periodontal pocket is further increased.

(Third embodiment)
The third embodiment of the present invention will be described with reference to FIGS.
The electric toothbrush 1 of this embodiment is equivalent to what changed the structure of the head part 11 of the electric toothbrush of 2nd Embodiment. The details of this change are shown below. In addition, since the structure similar to 2nd Embodiment is employ | adopted about the other point, about the common structure, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 7A, the height h from the flocked surface 13 to the tip of the insulating bristle bundle 60 is greater than the height from the flocked surface 13 to the tip of the conductive bristle bundle 50. Due to the difference in height, a reservoir 34 is formed at the tip of the conductive bristle bundle 50.

  In the head part 11, the insulating bristle bundle 60 is planted on both outer sides in the longitudinal direction. A plurality of conductive bristle bundles 50 are implanted between the outer insulating bristle bundles 60. Since the plurality of conductive bristle bundles 50 are implanted so as to be adjacent to each other, the storage portion 34 formed at the tip of each conductive bristle bundle 50 is continuous. That is, one large reservoir is formed by the plurality of reservoirs 34.

With reference to FIG. 8, the usage form of the electric toothbrush 1 using the dentifrice 80 is demonstrated.
Prior to the start of brushing, when the user places the dentifrice 80 on the tips of the conductive bristle bundle 50 and the insulating bristle bundle 60, a part of the dentifrice 80 is reserved in the reservoir 34.

  As shown in FIG. 8, when brushing is performed by the user, a part of the dentifrice 80 is consumed. At this time, the dentifrice 80 stored in the reservoir 34 is less likely to be consumed than the dentifrice 80 outside the reservoir 34, that is, the dentifrice 80 at the tip of the insulating bristle bundle 60. For this reason, while the dentifrice 80 mounted on the front-end | tip part of the insulation bristle bundle 60 is consumed, the dentifrice 80 of the storage part 34 is ionized by electricity supply.

  When a dentifrice 80 containing an electrolytic medicinal component is used, an electric current acts on the medicinal component and is attracted to the oral tissue. When this medicinal component has a bactericidal action, the oral cavity is sterilized.

According to the toothbrush of the said embodiment, in addition to the effect of (1) and (2) of 1st Embodiment, and (3)-(5) of 2nd Embodiment, the effect shown below is acquired. .
(6) One reservoir is formed by the reservoir 34 at the tip of each conductive bristle bundle 50. For this reason, an electric current can be made to act on more dentifrice 80 at the time of brushing. In addition, when the user places the dentifrice 80 on the head portion 11 before brushing, the operation of placing the dentifrice 80 only on the storage portion can be more easily performed.

In addition, you may change the said embodiment as follows.
In the first embodiment, all the mixed bristle bundles 70 have the same height, but may have different heights. That is, in the mixed bristle bundle 70, the height of the conductive bristle 30 with reference to the reference plane is different from the height of the insulating bristle 40 with reference to the reference plane, and one mixed bristle bundle 70 with reference to the reference plane. The height of the other mixed bristle bundle 70 with respect to the reference plane may be different from each other. In this case, for example, according to FIG. 5, the height of the mixed bristle bundle at both the outer side and the central part in the longitudinal direction may be high, and the height of the other mixed bristle bundles may be low. Or according to FIG. 7, it is good also as a structure where the mixed bristle bundle distribute | arranged to the both outer sides of a longitudinal direction is high, and the mixed bristle bundle distribute | arranged to the center part is low. Other configurations may also be used.

  Further, as in the above-described modification, in the case where the height of one mixed bristle bundle 70 based on the reference plane and the height of another mixed bristle bundle 70 based on the reference plane are different from each other, The height of the conductive bristle 30 constituting the bristle bundle 70 and the height of the insulating bristle 40 may be the same.

  -In 1st Embodiment, although the flocking surface 13 is formed as a smooth surface extended in the longitudinal direction of the brush body 10, it can also be changed as follows, for example. That is, as shown in FIG. 10, it is possible to form a curved flocked surface 13 in which a central portion in the longitudinal direction of the head portion 11 protrudes outward. In this case, when the base end portion of each mixed bristle bundle 70 having the same length is implanted in the head portion 11 by the same length, the length from the reference surface to the distal end is between the adjacent mixed bristle bundles 70. Different from each other. In addition, in this modification, when the surface opposite to the flocked surface 13 is used as a reference in the height direction, a virtual surface (surface indicated by a one-dot chain line in the drawing) passing through the central portion of the flocked surface 13 is provided. The reference surface passes through the highest portion of the flocked surface 13.

  In the first embodiment, the height of the conductive bristle 30 from the reference surface is lower than the height of the insulating bristle 40 from the reference surface, but the height of the conductive bristle 30 from the reference surface is insulative. It can also be made higher than the height of the bristle 40. In this case, a reservoir is formed at the tip of the insulating bristle 40. Accordingly, the dentifrice at the tip of the conductive bristle 30 is consumed earlier than the dentifrice stored in the storage portion of the insulating bristle 40. Therefore, when the front-end | tip of the conductive bristle 30 touches a gum directly, it is suppressed that the contact between the conductive bristle 30 and a gum is prevented by a dentifrice. Therefore, it is possible to obtain an electric massage effect such as warming and extinguishing the gums when electricity flows. In addition, if the dentifrice which contains a heat storage agent and a heat generating agent as a component is used together at this time, the said electric massage effect will improve further according to a heat storage effect or a heat generation effect.

  -In 1st Embodiment, although the height from the reference plane of the conductive bristle 30 which comprises the mixed bristle bundle 70 is lower than the height from the reference plane of the insulating bristle 40, the reference plane of the conductive bristle 30 Can be made higher than the height of the insulating bristle 40. In this case, a reservoir is formed at the tip of the insulating bristle 40. Also in this case, the dentifrice 80 placed on the tip of the conductive bristle 30 is consumed earlier than the dentifrice stored in the storage portion of the insulating bristle 40. Similar effects can be obtained.

  Further, the electric toothbrush 1 is provided with a conductive bristle 30 having a structure in which the core portion 31 protrudes from the covering portion 33. For this reason, bacteria can be sterilized intensively with chlorine by the core 31 entering a gap such as a periodontal pocket. Moreover, since the electricity supply area becomes large because the core part 31 protrudes, an electric massage effect can be heightened. In addition, since the portion other than the tip portion of the core portion 31 is covered with the covering portion 33 that is an insulating member, current is intensively supplied to the tip portion of the core portion 31. Thereby, the electric massage effect can be further enhanced.

  In the second and third embodiments, the height of the conductive bristle bundle 50 from the reference plane is set lower than the height of the insulating bristle bundle 60 from the reference plane. Can be made higher than the height of the insulating bristle bundle 60. In this case as well, the same operational effects as in the modified example can be obtained. In addition, when the user places the dentifrice 80 on the head portion 11 before brushing, the user can easily perform the operation of placing the dentifrice 80 only on the storage portion.

  -In 2nd Embodiment, although the insulation bristle bundle 60 with high height is arrange | positioned at both the outer side and center part of a longitudinal direction, for example, the conductive bristle bundle 50 with high height is arrange | positioned in the center part. Also good. Moreover, you may arrange | position the conductive bristle bundle 50 with high height in the both outer sides of a longitudinal direction.

  In each embodiment, the conductive bristle 30 has the same height with respect to the reference plane, and the insulating bristle 40 has the same height. In other words, the height of the bristle has only two levels, but may be configured by three or more levels. For example, as shown in FIG. 9, the height of the conductive bristle bundle 50 planted in the center can be made lower than the height of the other conductive bristle bundle 50. In this case, the effect which suppresses that a medicinal component leaks outside becomes still larger.

  -In each embodiment, although the brush body 10 was comprised including the head part 11 and the brush handle 12, the brush body 10 can also be comprised except the brush handle 12. FIG. In this case, the removed brush handle 12 can be formed integrally with the grip main body 20 or can be formed as a separate element from the head 11 and the grip main body 20.

  -In each embodiment, although this invention was applied to the vibration type electric toothbrush, this invention can also be applied to the rotation type electric toothbrush which rotates a part of head part by which the bristle was planted. Further, the present invention can be applied to a toothbrush in which the function of vibrating the head part or the function of rotating the head part is omitted.

  DESCRIPTION OF SYMBOLS 1 ... Electric toothbrush, 10 ... Brush body, 11 ... Head part, 12 ... Brush handle, 13 ... Flocking surface, 14 ... Conductive member, 15 ... Connection terminal, 16 ... Insertion hole, 20 ... Grip main-body part, 21 ... Grip Electrode 22 ... Vibration actuator 23 ... Output shaft 24 ... Battery 25 ... Circuit part 25a ... Control circuit 25b ... Charge circuit 25c ... Power supply circuit 26 ... Switch 27 ... LED 30 ... Conductive bristle DESCRIPTION OF SYMBOLS 31 ... Core part, 32 ... Tip part, 33 ... Cover part, 34 ... Storage part, 40 ... Insulating bristle bundle, 50 ... Conductive bristle bundle, 60 ... Insulative bristle bundle, 70 ... Mixed bristle bundle, 80 ... Dentifrice

Claims (7)

In the brush body in which the mixed bristle bundle including the conductive bristle having conductivity and the insulating bristle having insulation is provided on the flocked surface,
The brush body, wherein a height of the conductive bristle relative to the reference surface of the flocked surface is different from a height of the insulating bristle relative to the reference surface. In a brush body in which a conductive bristle bundle including a plurality of conductive bristles having conductivity and an insulating bristle bundle including a plurality of insulating bristles having insulating properties are provided on a flocked surface,
The brush body, wherein a height of the conductive bristle bundle with respect to a reference surface of the flocked surface is different from a height of the insulating bristle bundle with respect to the reference surface. In the brush body in which the mixed bristle bundle including the conductive bristle having conductivity and the insulating bristle having insulation is provided on the flocked surface,
In one mixed bristle bundle, the height of the conductive bristle relative to the reference surface of the flocked surface is different from the height of the insulating bristle relative to the reference surface, and the reference surface is used as a reference. The brush body according to claim 1, wherein the height of the one mixed bristle bundle is different from the height of the other mixed bristle bundle based on the reference plane. In the brush body as described in any one of Claims 1-3,
The conductive bristle includes a conductive core part and an insulating covering part, the core part is covered with the covering part, and a tip of the core part protrudes from the covering part. Brush body. In the brush body as described in any one of Claims 1-4,
A reservoir for storing a dentifrice at a tip portion of the insulating bristle when the height of the insulating bristle relative to the reference plane is lower than the height of the conductive bristle relative to the reference plane A brush body characterized in that is formed. In the brush body as described in any one of Claims 1-4,
A reservoir for storing a dentifrice at a tip portion of the conductive bristle when a height of the conductive bristle relative to the reference plane is lower than a height of the insulating bristle relative to the reference plane A brush body characterized in that is formed.   A toothbrush including the brush body according to any one of claims 1 to 6.

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