WO2019107489A1 - 電動歯ブラシ用取替ブラシ及び電動歯ブラシ - Google Patents

電動歯ブラシ用取替ブラシ及び電動歯ブラシ Download PDF

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Publication number
WO2019107489A1
WO2019107489A1 PCT/JP2018/043970 JP2018043970W WO2019107489A1 WO 2019107489 A1 WO2019107489 A1 WO 2019107489A1 JP 2018043970 W JP2018043970 W JP 2018043970W WO 2019107489 A1 WO2019107489 A1 WO 2019107489A1
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WO
WIPO (PCT)
Prior art keywords
head portion
head
electric toothbrush
neck
neck portion
Prior art date
Application number
PCT/JP2018/043970
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
智史 畠田
徹弥 阿部
真衣子 菊地
Original Assignee
ライオン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ライオン株式会社 filed Critical ライオン株式会社
Priority to CN201880072720.5A priority Critical patent/CN111343944A/zh
Priority to KR1020207007325A priority patent/KR20200088274A/ko
Priority to SG11202004600XA priority patent/SG11202004600XA/en
Priority to JP2019557320A priority patent/JP7270551B2/ja
Publication of WO2019107489A1 publication Critical patent/WO2019107489A1/ja

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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
    • A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor

Definitions

  • the present invention relates to a replacement brush for an electric toothbrush and an electric toothbrush.
  • Priority is claimed on Japanese Patent Application No. 2017-231177, filed Nov. 30, 2017, the content of which is incorporated herein by reference.
  • the electric toothbrush can provide a high cleaning feeling that can not be obtained with a normal hand-brushed toothbrush (see, for example, Patent Document 1 below). For this reason, the use of an electric toothbrush is effective in brushing teeth.
  • the electric toothbrush is roughly classified into a reverse vibration type and a sonic vibration type.
  • the sonic vibration type is configured to transmit the vibration generated by rotating the eccentric weight directly connected to the motor at high speed to the head portion to vibrate the hair bundle (see, for example, Patent Document 2 below).
  • a replacement structure in which a replacement brush including a neck portion and a head portion is detachably attached to a handle portion accommodating a battery and a motor.
  • the tip of the hair bundle (the tip of the brush) vibrates at high speed and minutely, so that it is expected to improve the feeling of cleaning on the tooth surface, between the teeth and the tooth neck.
  • the thickness of the head portion is reduced in order to secure the feeling of cleaning a narrow part such as the back teeth while enhancing the operability in the oral cavity (for example, See Patent Document 3).
  • the vibration width in the direction perpendicular to the flocked surface of the head portion is increased, and the user may feel the vibration unpleasant in the oral cavity there were.
  • the main sites that feel uncomfortable in the oral cavity include oral tissues (such as the inside of the cheek) with which the back of the head portion comes in contact.
  • oral tissues such as the inside of the cheek
  • the back surface of the head portion tends to come in contact with the oral tissue, which tends to make the user feel more uncomfortable.
  • the increase in the vibration width due to the reduction of the thickness of the head is due not only to the back of the head but also to contact with the oral tissue (such as gums) of the hair bundle implanted on the front (flocked surface) of the head. Also affect. That is, when part of the hair bundle contacts the gum, depending on how the user applies the hair bundle, the user may feel uncomfortable due to vibration transmitted to the gum.
  • Utility model registration 3148337 gazette Unexamined-Japanese-Patent No. 8-257043 JP, 2011-4852, A
  • the present invention has been proposed in view of such conventional circumstances, and by reducing the thickness of the head, it is possible to obtain a high feeling of cleaning of the back teeth and to reduce the discomfort due to the vibration in the oral cavity It is an object of the present invention to provide a replacement brush for an electric toothbrush that has made it possible, and an electric toothbrush provided with such a replacement brush for an electric toothbrush.
  • the present invention provides the following means. That is, the invention according to claim 1 includes a handle portion, a neck portion extended from the tip of the handle portion, and a head portion provided at the tip of the neck portion, and generates vibration by electrical drive.
  • the neck portion and the head portion removably attached to the toothbrush main body including the handle portion of the electric toothbrush for cleaning the inside of the oral cavity by a plurality of hair bundles implanted on the flocked surface of the head portion;
  • the replacement brush for the electric toothbrush wherein the maximum thickness T of the head portion is 2 to 4 mm, the minimum thickness D of the neck portion is 3 to 5 mm, and the relationship D ⁇ T is satisfied,
  • the head portion is biased in a direction from the back side toward the front side with respect to the neck portion on the back side of the head portion and the neck portion opposite to the front side provided with the flocked surface It is replaceable brushes for an electric toothbrush, characterized in that.
  • the invention according to claim 2 is characterized in that a step H is provided between the back surface of the head portion and the back surface of the neck portion, and the step H is 0.5 to 3 mm. It is a replacement brush for electric toothbrushes as described in.
  • the head portion is provided to be inclined in a direction from the back side to the front side with respect to the neck portion, and the axis line of the head portion parallel to the flocked surface and
  • the replacement brush for an electric toothbrush according to claim 1 or 2 wherein an angle formed by an axis line of the neck portion parallel to the mounting and demounting direction with respect to the handle portion is 1 to 5 °.
  • the distance between the end of the head portion and the tip of the support shaft is The replacement brush for an electric toothbrush according to any one of claims 1 to 3, which has a size of 40 to 60 mm.
  • the head portion is biased in a direction from the back side toward the front side with respect to the neck portion on the front side of the head portion and the neck portion on the side on which the flocked surface is provided. 5.
  • the replacement brush for an electric toothbrush according to any one of claims 1 to 4, which is provided.
  • the invention according to claim 6 is characterized in that the back surface side of the head portion and the neck portion has a vibration suppressing portion which is partially connected from the tip of the neck portion to the back surface of the head portion.
  • 1 is a replacement brush for an electric toothbrush according to any one of items 1 to 5.
  • the invention according to claim 7 includes a handle portion, a neck portion extended from the tip of the handle portion, and a head portion provided at the tip of the neck portion, and generates vibration by electrical drive.
  • the present invention by reducing the thickness of the head portion, it is possible to obtain a feeling of high cleaning of the back teeth and to reduce discomfort due to vibration in the oral cavity. It is possible to provide a replacement brush, as well as an electric toothbrush provided with such a replacement brush for an electric toothbrush.
  • FIG. 6 is a cross-sectional view of the head section taken along line XX shown in FIG. 5; It is a front view which shows another example of arrangement
  • FIG. 1 It is a side view which shows the state by which the hair
  • the side on which the flocked surface 4a of the head portion 4 described later is provided is the front (front) side of the replacement brush 1B (electric toothbrush 1), and the flocked surface 4a of the head portion 4 is provided.
  • the side opposite to the side is described as the back (rear surface) side of the replacement brush 1B (electric toothbrush 1).
  • the electric toothbrush 1 shown in FIG. 1 is provided at the handle portion 2, the neck portion 3 axially extended from one end (tip end) of the handle portion 2, and the tip of the neck portion 3
  • the interior of the oral cavity is cleaned with a plurality of hair bundles 5 implanted on the flocked surface 4 a of the head unit 4 while generating vibration by electrical drive.
  • a replacement brush (hereinafter referred to as a replacement brush) 1B for the electric toothbrush including the neck 3 and the head 4 is attached to and detached from the toothbrush main body 1A including the handle 2. It has a replacement structure that can be attached freely.
  • the handle portion 2 constituting the toothbrush main body 1A is a portion held by the user, and the shape thereof is not particularly limited, but is, for example, substantially cylindrical.
  • a battery for example, AA or AAA dry battery
  • a motor rotationally driven by electricity supplied from the battery And an eccentric weight directly connected to the motor.
  • the toothbrush main body 1A adopts a sound wave vibration type in which vibration is generated by rotating the eccentric weight at high speed by driving of a motor, and vibration is applied to the support shaft 6 provided protruding from the tip of the handle portion 2 in the axial direction. It is a mechanism to communicate the
  • the number of revolutions of the motor is preferably 6000 to 16000 rpm, and more preferably 7000 to 15000 rpm. If the number of revolutions of the motor is less than 6000 rpm, the feeling of cleaning by the electric toothbrush 1 will be insufficient. On the other hand, when the number of revolutions of the motor exceeds 16000 rpm, discomfort due to vibration is promoted.
  • the battery can be replaced with respect to the battery storage unit by removing the cap that is detachably attached to the bottom of the handle portion 2. Further, in the toothbrush main body 1A, when the user operates the power button provided on the front surface of the handle portion 2, it is possible to switch power supply / shut off (power on / power off) from the battery to the motor It has become.
  • the toothbrush main body 1A is not limited to the configuration using the above-described battery (primary battery) as an internal power supply, but uses, for example, a battery (secondary battery) such as a nickel cadmium battery, a nickel hydrogen battery, or a lithium ion battery It is good also as composition.
  • a battery secondary battery
  • charging from the external power supply (commercial power supply) to the internal power supply may be possible via a charger.
  • the configuration may be configured to switch the strength / weakness of the vibration by the operation of the operation button.
  • the replacement brush 1B as shown in FIGS. 1 to 4, has a neck portion 3 and a head portion 4 integrally formed of a thermoplastic resin, and the support shaft 6 of the toothbrush main body 1A By connecting the proximal ends, they are integrally attached to the tip of the toothbrush main body 1A.
  • An axial hole (not shown) into which the support shaft 6 of the toothbrush main body 1A is inserted is provided at the base end of the neck portion 3 in the axial direction.
  • the replacement structure for detachably attaching the replacement brush 1B to the toothbrush main body 1A is not particularly limited, and a conventionally known structure can be employed.
  • the vibration transmitted from the support shaft 6 can be transmitted to the head 4 via the neck 3 to vibrate the hair bundle 5 It has become.
  • resin for example, polyacetal (POM), a polypropylene (PP), etc.
  • PP polypropylene
  • the insertion strength of the support shaft 6 with respect to the shaft hole described above becomes strong, and the vibration width in the direction perpendicular to the flocked surface 4 a of the head portion 4 increases even when the thickness of the head portion 4 is reduced. It can be suppressed.
  • the flexural modulus (JIS K 7171) of the resin forming the neck portion 3 and the head portion 4 is preferably 1000 to 3000 MPa, more preferably 1500 to 3000 MPa, and 2000 to 3000 MPa. Is more preferred.
  • the neck portion 3 has a tapered shape which is gradually reduced in diameter from the proximal side to the distal side. Thereby, the tip of the neck portion 3 is a portion whose diameter is reduced most.
  • at least the front surface 3a side of the neck portion 3 may have a gentle curved surface (curved) shape in order to make it easier to polish the back teeth.
  • the minimum thickness D of the neck portion 3 is preferably 3 to 5 mm, and more preferably 3.5 to 4.5 mm.
  • the thickness of the neck portion 3 refers to the thickness between the front surface 3 a and the back surface 3 b of the neck portion 3. Therefore, the minimum thickness D of the neck portion 3 is the thickness of the tip of the neck portion 3 which is most reduced in diameter (in the extending direction of the neck portion 3 based on the point P on the back surface 3b forming the portion in FIG.
  • the thickness of the cross section in the vertical direction is adopted.
  • the vibration width in the direction perpendicular to the flocked surface 4 a of the head portion 4 becomes large, and the vibration transmitted from the neck portion 3 to the head portion 4 also becomes large.
  • the discomfort associated with when the minimum thickness D of the neck portion 3 exceeds 5 mm, the opening of the lips becomes large at the time of brushing teeth, the operability in the oral cavity can not be secured, and the feeling of cleaning the back teeth is reduced.
  • the head portion 4 is a portion for cleaning the inside of the oral cavity with a plurality of hair bundles 5, and by vibrating the plurality of hair bundles 5 at the time of brushing, the tooth surface and the neck It is possible to enhance the plaque removing effect in details such as parts and interdental parts.
  • the head portion 4 may have any shape or size that facilitates the cleaning of the inside of the oral cavity, and the shape is not particularly limited, but generally has a substantially rectangular parallelepiped shape and has rounded corner portions. ing. Further, the head portion 4 may have a shape in which the width is gradually narrowed from the base end side to the tip end side.
  • the flocked surface 4 a of the head portion 4 and the back surface 4 b thereof form a flat surface.
  • the back surface 4b of the head unit 4 may have a tapered shape in which the thickness gradually decreases from the base end side to the tip end side, and the center of the back surface 4b side of the head unit 4 is a rounded shape. May be
  • the head portion 4 of the present embodiment spreads in the width direction as it goes from the tip toward the neck portion 3 in front view, then extends with an equal width, and then narrows in the width direction to reach the boundary R with the neck portion 3 Have.
  • the boundary R is an end point of a curve forming a cornering from the neck portion 3 in the front view shape of the head portion 4, that is, a position where the bending direction of the curve forming the cornering changes. More specifically, from the curves or straight lines forming the two edges where the width of the cornering portion from the neck portion 3 in the head portion 4 in front view narrows, the curves or straight lines whose width widens or straight lines with the same width It is a changing position. Further, in the case of the electric toothbrush 1 in which the width becomes wider as the neck portion 3 moves toward the handle portion 2 in a front view, the boundary R coincides with the smallest position in the head portion 4 and the neck portion 3 in a front view.
  • the minimum width of the neck portion 3 in a front view is preferably 3 to 5 mm, and more preferably 3.5 to 4.5 mm.
  • a plurality of flocked holes 7 having the same diameter are arranged in a staggered manner.
  • the tufts 5 are formed by bundling a plurality of brushes (filaments) and folding them in two, and sandwiching a metal retaining stopper (not shown) called flat wire between them, and driving them into the flocking holes 7 for each flocked hole It is planted on 7th.
  • a metal retaining stopper not shown
  • the flocking holes 7 are not limited to the configuration in which the plurality of the flocking holes 7 are arranged side by side in a staggered manner, and the plurality of the flocking holes 7 may be arranged in a plurality in a grid shape.
  • the inner diameter of the flocking hole 7 has a correlation with the number of the hair bundles 5 to be flocked, so it affects the hardness and feeling of use of the hair bundles 5, but depending on the thickness and hair length of the hair bundles 5 used when flocking. Although the feeling in use is adjustable to some extent, in general, the range of 1.0 to 3.0 mm is preferable.
  • the hair bundle 5 is not particularly limited as to the material of the brush, but, for example, polyamide (eg 6-12 nylon, 6-10 nylon), polyester (eg polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate), polyolefin Examples include synthetic resin materials such as (e.g. polypropylene) and elastomers (e.g. olefin based and styrene based). In addition, a plurality of these resin materials may be used in combination, and for example, different resin materials can be used for the core portion and the sheath portion as in a core-sheath structure.
  • polyamide eg 6-12 nylon, 6-10 nylon
  • polyester eg polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate
  • polyolefin examples include synthetic resin materials such as (e.g. polypropylene) and elastomers (e.g. olefin based
  • the cross-sectional shape of the brush is usually circular, but is not limited to such a shape, for example, oval, triangular, square, hexagonal, star, three-leaf clover, four-leaf It can be in any shape such as a clover shape.
  • the hair length of the hair bundle 5 is preferably 8 mm to 13 mm for adults and 6 mm to 9 mm for children from the flocked surface 4 a of the head portion 4.
  • the thickness (maximum diameter) of the brush is preferably 0.12 mm to 0.26 mm in terms of usability in the oral cavity and feeling of use. Further, in consideration of the feeling of use, the feeling of brushing, the cleaning effect, the durability, etc., a plurality of brushes having different thicknesses may be used in arbitrary combination.
  • the lower end of the hair bundle 5 is headed
  • the heat fusion method of pressing and fixing into the molten resin to be the part 4 or heating the lower end of the hair bundle 5 to form a molten mass, the molten resin is filled in the cavity of the mold to form the head part 5 In-mold method etc. which are integrally molded with can be used.
  • the width W of the head portion 4 is preferably 6 to 16 mm, more preferably 8 to 15 mm, and still more preferably 10 to 12 mm. If it is below the upper limit value, it can be inserted even in a narrow place such as the back teeth without causing discomfort due to vibration. The smaller the width W of the head unit 4 is, the smaller the discomfort caused by the vibration of the head unit 4 is. Moreover, if it is more than a lower limit, since a hair bundle 5 of sufficient quantity can be planted, cleaning feelings, such as a back tooth, can be secured. Furthermore, even if the head portion 4 vibrates, the brush can be firmly applied to the cleaning site, and stable oral cleaning can be performed.
  • the length V of the head portion 4 is preferably 20 to 35 mm, and more preferably 20 to 30 mm. If it is less than the upper limit value, the displacement of the head end due to the vibration of the head unit 4 is not large, which leads to the reduction of discomfort. Moreover, if it is more than a lower limit, since a hair bundle 5 of sufficient quantity can be planted, cleaning feelings, such as a back tooth, can be secured.
  • the width W of the head unit 4 is 12 to 16 mm
  • the length V of the head unit 4 is 28 to 33 mm, it is possible to reduce the discomfort caused by the vibration of the head unit 4.
  • the unnaturalness can be further reduced while securing the advantage of efficiently polishing the cleaning site over a wide area.
  • the maximum thickness T of the head portion is preferably 2 to 4 mm, and more preferably 2.5 to 3.5 mm.
  • the thickness of the head portion 4 refers to the thickness between the front surface (flocked surface) 4 a and the back surface 4 b of the head portion 4.
  • the head portion 4 On the back side of the head portion 4 and the neck portion 3, the head portion 4 is provided to shift (shift) in a direction from the back side to the front side with respect to the neck portion 3. That is, in the replacement brush 1B of the present embodiment, as shown in FIG. 2, the extension line L1 in the axial direction along the back surface 4b of the head portion 4 passes the tip P of the back surface 3b of the neck portion 3 and extends It is located on the front side of the extension line L2 parallel to L1.
  • the tip end P of the neck portion 3 represents a starting point (inflection point) when the back surface 3b of the neck portion 3 is biased from the back surface side toward the front surface side. That is, the tip end P of the neck portion 3 is at a position where its inclination changes from the straight line or curve forming the back surface 3 b of the neck portion 3 to the straight line or curve forming the back surface 4 b of the head portion 4.
  • the extension line L1 passes through a point on the back surface 4b side forming the maximum thickness T of the head unit 4 and adopts an extension line parallel to the flocked surface 4a do it.
  • a step H is provided between the back surface 4 b of the head portion 4 and the back surface 3 b of the neck portion 3.
  • the level difference H corresponds to the amount of deviation (shift) of the extension line L1 with respect to the extension line L2.
  • the height difference H is preferably 0.5 to 3.0 mm, and more preferably 0.5 to 2.0 mm.
  • step difference H the effect by making the back surface 4b side of the head part 4 mentioned above thinner than the back surface 3b side of the neck part 3 as the level
  • step difference H is less than 0.5 mm becomes inadequate.
  • the step H exceeds 2.0 mm, the head 4 is excessively positioned on the front side with respect to the axis of the handle 2, and the operability in the oral cavity is reduced, and the cleaning of the back teeth is felt Decreases.
  • the distance A between the end of the head portion 4 and the end of the support shaft 6 is preferably 40 to 60 mm, and more preferably 45 to 55 mm.
  • the distance A refers to the length of a line connecting the tip of the head 4 and the tip of the support shaft 6.
  • a space is formed between the back surface 4b of the head unit 4 and the oral tissue (such as the inside of the cheek) at the time of brushing. Can be secured. Thereby, the contact of the back surface 4b of the head portion 4 with the oral tissue can be suppressed, and discomfort due to vibration can be reduced.
  • the head portion 4 is provided to shift (shift) in a direction from the back side to the front side with respect to the neck portion 3. That is, in the replacement brush 1B of the present embodiment, as shown in FIG. 2, the axial extension line L3 along the flocked surface 4a of the head portion 4 passes the tip Q of the front surface 3a of the neck portion 3 and extends It is located on the front side of the extension line L4 parallel to the line L3.
  • the tip Q represents a start point (inflection point) when the front surface 3a of the neck portion 3 is biased from the rear side to the front side.
  • the amount of deviation (shift) of the extension line L3 with respect to the extension line L4 is preferably more than 0 mm and 1 mm or less, and more preferably more than 0 mm and 0.5 mm or less.
  • the replacement brush 1B of the present embodiment by biasing the flocked surface 4a of the head portion 4 to the front side, the transmission of vibration from the neck portion 3 to the head portion 4 can be suppressed as compared to the case where it is not offset.
  • the vibration width in the direction perpendicular to the flocked surface 4 a of the head portion 4 can be reduced, and discomfort caused by vibration in the oral cavity can be reduced.
  • the amount of deviation (shift) becomes larger than necessary, the head 4 is excessively separated from the axis straight of the handle 2, so the operability in the oral cavity is reduced and the feeling of cleaning the back teeth is reduced.
  • the flocked surface 4a of the head portion 4 described above is provided with a shift (shift) in the direction from the back side to the front side with respect to the front surface 3a of the neck portion 3
  • the present invention is not necessarily limited to such a configuration. In some cases, it is also possible to adopt a configuration in which the flocked surface 4a of the head portion 4 and the front surface 3a of the neck portion 3 are connected continuously (straight).
  • the head portion 4 is provided to be inclined with respect to the neck portion 3 in a direction from the back side to the front side. That is, in the replacement brush 1B of the present embodiment, as shown in FIG. 2, the axis line T1 (the extension line of the extension line L3) of the head 4 parallel to the flocked surface 4a With respect to an axis line T2 (an extension line along the central axis of the axial hole) of the neck portion 3 which is parallel to the above, and is inclined toward the front side.
  • the angle ⁇ between the axial line T1 of the head 4 and the axial line T2 of the neck 3 (hereinafter referred to as the inclination of the head 4) ⁇ is preferably 1 to 5 °, and 2 to 4 ° It is further preferred that As a result, not only the contact of the back surface 4b of the head portion 4 with the oral tissue (such as the inside of the cheek) can be suppressed, but also the feeling of cleaning the back teeth and the back of the teeth can be enhanced.
  • the vibration width in the vertical direction is increased, and the sense of discomfort associated with the vibration during use is promoted.
  • the inclination ⁇ of the head portion 4 exceeds 5 °, not only the reachability to the back teeth of the head portion 4 is reduced, but also the position of the head portion 4 is excessively separated from the axis straight of the handle portion 2
  • the vibration width in the direction perpendicular to the surface 4a is increased, and the discomfort caused by the vibration during use is promoted.
  • the replacement brush 1 ⁇ / b> B of this embodiment is a vibration that is partially connected from the tip of the neck portion 3 to the back surface 4 b of the head portion 4 on the back surface side of the head portion 4 and the neck portion 3.
  • the control unit 8 is provided.
  • the vibration suppression portion 8 is integrally formed with the head portion 4 and the neck portion 3 and has a gradually narrower width and a gradually smaller height from the tip P of the back surface 3 b of the neck portion 3 to the back surface 4 b of the head portion 4. It has the following shape. Moreover, the vibration suppression part 8 forms the inclined surface which connects between back 4b of the head part 4 mentioned above, and the back 3b of the neck part 3 smoothly. Moreover, the front end of the vibration suppression part 8 is located on the line of the width direction which passes along the rear end of the 2nd hair bundle 5b located in the rear end (proximal end) side of outer side planting area
  • the vibration suppression unit 8 suppresses excessive vibration in the direction perpendicular to the flocked surface 4 a of the head unit 4. Further, it is possible to increase the strength of the connection portion between the head portion 4 and the neck portion 3 by the vibration suppressing portion 8 while reducing the thickness on the back surface 4 b side of the head portion 4 described above. Thereby, it is possible to reduce the discomfort due to the vibration while suppressing the contact of the back surface 4b of the head portion 4 with the oral tissue (such as the inner side of the cheek).
  • a central flocked region S1 formed by arranging a plurality of flocked holes 11 in the longitudinal direction of the head portion 4 in the central portion thereof
  • An outer flocked region S2 configured by arranging a plurality of flocking holes 11 in the length direction of the head portion 4 on both sides across the region S1 is provided.
  • a central flocked area S1 is configured by 11.
  • a pair of outer flocked regions S2 is constituted by two rows of flocked holes 11 aligned in the length direction of the head portion 4, respectively.
  • a hair bundle constituted by a tapered brush (hereinafter referred to as a first taper hair) whose diameter decreases toward the tip of the hair. 5 (hereinafter referred to as the first hair bundle 5a) are implanted.
  • a hair bundle 5 (hereinafter referred to as a second taper hair) having a tapered brush whose tip diameter is smaller than that of the first taper hair.
  • the second hair bundle 5b is implanted.
  • the 2nd hair bundle 5b is implanted by the hair-planting holes 7a and 7b located in the front end side and back end side of center hair-implanting area
  • the second hair bundle 5b implanted on the front end side and the rear end side of the central flocked region S1 and the second hair bundle implanted on the outer flocked region S2.
  • the hair bundle 5b is disposed so as to surround the periphery of the first hair bundle 5a implanted in the central flocked area S1.
  • the plurality of second hair bundles 5 b are provided along the periphery of the central flocked region S 1 together with the plurality of second hair bundles 5 b implanted in the outer flocked region S 2.
  • the peripheral flocking area S3 implanted in line in the circumferential direction is provided.
  • the flocking density of the first hair bundle 5a implanted in the central flocked area S1 is set to be higher than the flocking density of the second hair bundle 5b implanted in the outer flocked area S2.
  • "flock density” said here is a value given by [sum of area of flock holes] ⁇ [flock area], and "sum of area of flock holes” means each flocked area S1, A value obtained by adding the areas of the flocked holes 11 constituting S2, “flocked area” is in accordance with “JIS S 3016-1995” and each planting located on the outer periphery of each flocked area S1, S2 It represents by the area of the enclosed area which connected the outer side of the pore 11 by a straight line.
  • the first hair bundle 5a of the central flocked area S1 formed of the first taper hair having a higher flocked density than the outer flocked area S2 and a tip diameter larger than that of the second taper hair.
  • the tooth surface is efficiently cleaned, and the implanted density is lower than that of the central implanted area S1 with respect to the outer implanted area S2 that is relatively easy to hit the gums, and the tip diameter is smaller than that of the first taper bristles.
  • the first hair bundle 5a of the central flocked area S1 having a high flocking density is constituted by the first taper hair having a tip diameter larger than that of the second taper hair, the first hair bundle 5a
  • the strength of the hair pelvis produces a good vibration transmission, which makes it possible to improve the feeling of cleaning by vibration.
  • the second hair bundle 5b is implanted in the outer peripheral flocked area S3 surrounding the periphery of the first hair bundle 5a implanted in the central flocked area S1. This makes it easier for the second hair bundle 5b to contact the gums in all directions when brushing the back teeth, making it possible to further improve the comfort when the tips of the hairs hit the gums.
  • the hair length of the second hair bundle 5b implanted in the outer flocked area S2 is higher than the hair length of the first hair bundle 5a implanted in the central flocked area S1.
  • the maximum height of the first hair bundle 5a is t 1 [mm] and the maximum height of the second hair bundle 5b is t 2 [mm]
  • 0.5 mm ⁇ t 2 ⁇ t It is preferable to satisfy the relationship of 1 ⁇ 3.0 mm.
  • the hair of the second hair bundle 5b with respect to the neck and interdental region It is possible to improve the approachability first.
  • the tip of the hair hits the tooth surface
  • the second long hair bundle 5b opens naturally and the tip of the hair fits the tooth neck, so the tip of the hair cares about the angle at which the tip hits the tooth neck It is possible to improve the brushing effect of the cervix with a simple operation without doing.
  • the second hair bundle 5b plays a role of a cushion, thereby buffering vibrations and causing discomfort in the oral cavity. Can be reduced.
  • the difference in hair height t 2 -t 1 between the first hair bundle 5 a in the central hair-planted area S 1 and the second hair bundle 5 b in the outer hair-implanted area S 2 is in the range of 0.5 to 3.0 mm, By setting preferably in the range of 0.5 to 2.0 mm, more preferably in the range of 0.5 to 1.0 mm, it is possible to improve the cleanability of the tooth surface and the contact feeling with the gums. is there.
  • the tip diameter of the first taper bristles is 40 to 80 ⁇ m, and the tip diameter of the second taper bristles is 5 to 30 ⁇ m. It is possible to balance cleanability with a good balance. Furthermore, it is possible to achieve both cleaning of the tooth surface and reduction of discomfort associated with vibration.
  • a plurality of flocking holes 11 be provided in the central flocking area S1 so as to be aligned in at least two rows in the longitudinal direction of the head portion 4.
  • the first hair bundle 5a is implanted in two or more rows in the central flocked area S1 in the lengthwise direction of the head portion 4.
  • the flocked density of the first hair bundle 5a implanted in the central flocked area S1 is ⁇ 1
  • the flocked density of the second hair bundle 5b implanted in the outer flocked area S2 is ⁇ 2 It is preferable to satisfy the relationship of 0.40 ⁇ ⁇ 1 ⁇ 0.70, 0.20 ⁇ 2 ⁇ 0.40, and 1.2 ⁇ ⁇ 1 / ⁇ 2 ⁇ 2.4.
  • the ratio of flocking density [rho 2 of the second hair bundle 5b planted outside flocked region S2 for flocking density [rho 1 of the first hair bundle 5a planted in these central bristles region S1 (hereinafter, flocked
  • the ratio of 1 1 / ⁇ 2 is in the range of 1.2 to 2.4
  • the first hair bundle 5a of the central flocking area S1 having a higher flocking density than the outer flocked area S2 Since the surface is efficiently cleaned, and the second hair bundle 5b of the outer flocked area S2 having a lower flocking density than the central flocked area S1, the tooth neck and interdental areas are efficiently cleaned. Plaque removing power can be enhanced in details such as tooth flanks, necks and interdentals.
  • the second hair bundle 5b is implanted in the flocked holes 7a and 7b located on the front end side and the rear end side of the central flocked area S1, respectively.
  • the first hair bundle 5a may be implanted.
  • the first hair bundle 5a and the second hair bundle 5b are not limited to the above-described configuration using the taper hair, but may be any brush such as a straight hair whose diameter becomes constant toward the hair tip It is possible to use.
  • the thickness of the head portion 4 thin, it is possible to obtain a high feeling of cleaning the back teeth and make the thickness of the head portion 4 thin. It is possible to reduce discomfort due to vibration in the oral cavity because excessive vibration due to
  • this invention is not necessarily limited to the thing of the said embodiment, It is possible to add a various change in the range which does not deviate from the meaning of this invention.
  • the arrangement of the hair bundle 5 on the flocked surface 4a is not necessarily limited to the configuration shown in FIG. 5 and FIG. 6 described above, and appropriate changes can be made.
  • the central flocking area S1 is configured by the flocking holes 11 of the second embodiment.
  • a pair of flocked holes 11 arranged in the length direction of the head portion 4 constitute a pair of outer flocked regions S2.
  • each flocked hole 11 of outer side flocked region S2 is larger than the diameter of each flocked hole 11 of central flocked region S1.
  • the diameter of the first bundle of hair bundles 5c implanted in each of the flocked holes 11 in the central flocked region S1 is implanted in each of the flocked holes 11 of the outer flocked region S2.
  • the diameter of the hair bundle of the second hair bundle 5d is increased.
  • the hair length of the first hair bundle 5c is higher than the hair length of the second hair bundle 5d.
  • taper hairs can be used for the first hair bundle 5c and the second hair bundle 5d.
  • the 1st hair bundle 5c and the 2nd hair bundle 5d not only the composition using the hair for taper mentioned above but arbitrary brushes, such as hair for straight which becomes uniform in diameter toward the hair tip It is possible to use.
  • the first flocked surface 4a of the head unit 4 is firstly implanted with the plurality of second hair bundles 5d implanted in the above-mentioned outer flocked region S2.
  • a peripheral flocking area may be provided in which a plurality of second hair bundles 5d are implanted side by side in the circumferential direction of the head portion 4 so as to surround the hair bundle 5c.
  • the second bundle of hairs 5 d easily contacts the gums. Therefore, it is possible to relieve pressure on the gums by the second hair bundle 5d and to obtain a gentle hit on the gums. Moreover, it is possible to reduce the discomfort of the vibration transmitted to the gums at the time of brushing. Furthermore, by making the hair length of the first hair bundle 5c higher than the hair length of the second hair bundle 5d, it is possible to achieve both gentle contact with the gum and cleanability of the tooth neck. is there.
  • a central flocked area in which a plurality of first hair bundles 5 e are implanted side by side in the length direction of the head portion 4 on the tip side of the central portion of the flocked surface 4 a S1, a central hairless region S4 having no hair bundle on the proximal end side of the central portion of the flocked surface 4a, and a plurality of second hair bundles 5f on both sides of the central haired region S1 and the central hairless region S4
  • An outer flocked region implanted in line in the longitudinal direction of the part 4 is provided.
  • taper hairs can be used.
  • the composition using the hair for taper mentioned above not only the composition using the hair for taper mentioned above but arbitrary brushes, such as hair for straight which becomes uniform in diameter toward the hair tip It is possible to use.
  • the second hair bundle 5f on both sides of the central hairless region S4 is easily bent, and the approachability of the hair tip to the tooth neck becomes high.
  • it is possible to suppress the reduction in stiffness of the first hair bundle 5e and the second hair bundle 5f and the hair loss feeling it is possible to sufficiently secure the scraping ability of dental plaque.
  • vibration can be buffered and discomfort due to vibration in the oral cavity can be reduced.
  • the “flat line flocking method” was used. Moreover, the "diameter" in the flocking hole of the head part was 1.6 mm, the “row pitch” was 2.5 mm, and the “row pitch” was 2.2 mm (the distance between hole centers). Based on the above pitch, the number of columns and the number of rows are set according to each head width and head length, and 4 to 6 columns in the width direction and 7 to 9 rows in the length direction are set. For the bristles, ST bristles of PBT resin, and those with a base diameter of 7.5 mil were flocked 23 per flocking hole. Because it is flat-line flocking, the substance is 46 pieces. In addition, the hair length was 12 mm.

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Brushes (AREA)
PCT/JP2018/043970 2017-11-30 2018-11-29 電動歯ブラシ用取替ブラシ及び電動歯ブラシ WO2019107489A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201880072720.5A CN111343944A (zh) 2017-11-30 2018-11-29 电动牙刷用替换刷和电动牙刷
KR1020207007325A KR20200088274A (ko) 2017-11-30 2018-11-29 전동 칫솔용 교체 브러시 및 전동 칫솔
SG11202004600XA SG11202004600XA (en) 2017-11-30 2018-11-29 Replacement brush for electric toothbrush, and electric toothbrush
JP2019557320A JP7270551B2 (ja) 2017-11-30 2018-11-29 電動歯ブラシ用取替ブラシ及び電動歯ブラシ

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JPH0654717A (ja) * 1992-08-11 1994-03-01 Lion Corp 歯刷子
JP2005312617A (ja) * 2004-04-28 2005-11-10 Izumi Products Co 電動歯ブラシ器具

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JPH08257043A (ja) 1995-03-24 1996-10-08 Nidai Seiko:Kk 電動歯ブラシ
WO2005060788A1 (ja) * 2003-12-24 2005-07-07 Lion Corporation 歯ブラシ
WO2008153070A1 (ja) * 2007-06-14 2008-12-18 Lion Corporation 歯ブラシ
CN101467813A (zh) * 2007-12-30 2009-07-01 彭呈睿涛 一种能够换刷头的牙刷
JP3148337U (ja) 2008-11-26 2009-02-12 ライオン株式会社 電動歯ブラシ
JP5427486B2 (ja) 2009-06-24 2014-02-26 ライオン株式会社 歯ブラシ
JP5530776B2 (ja) * 2010-03-24 2014-06-25 ライオン株式会社 歯ブラシ
MY166679A (en) * 2010-10-29 2018-07-18 Lion Corp Toothbrush
KR20130102643A (ko) * 2010-12-23 2013-09-17 콜게이트-파아므올리브캄파니 구강관리기구
KR102047148B1 (ko) * 2012-05-01 2019-11-20 라이온 가부시키가이샤 칫솔
CN103405283B (zh) * 2013-05-29 2015-04-15 宁波赛嘉电器有限公司 一种具有摆振驱动结构的电动牙刷
JP2016010511A (ja) * 2014-06-27 2016-01-21 小林製薬株式会社 歯ブラシ
JP6598352B2 (ja) * 2015-03-31 2019-10-30 ライオン株式会社 歯ブラシ
EP3090650B1 (de) * 2015-05-04 2019-12-04 Trisa Holding AG Elektrogerät für die körper- insbesondere die gesichtspflege
TWI753888B (zh) * 2016-03-09 2022-02-01 日商獅子股份有限公司 牙刷
TWI840807B (zh) * 2016-03-09 2024-05-01 日商獅子股份有限公司 牙刷
JP6706103B2 (ja) * 2016-03-15 2020-06-03 オムロンヘルスケア株式会社 グリップ部分とブラシ部分のとの間を強固に接続した電動歯ブラシ

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JPS60187623U (ja) * 1984-05-24 1985-12-12 ライオン株式会社 刷子
JPH0654717A (ja) * 1992-08-11 1994-03-01 Lion Corp 歯刷子
JP2005312617A (ja) * 2004-04-28 2005-11-10 Izumi Products Co 電動歯ブラシ器具

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JPWO2019107489A1 (ja) 2020-11-26
JP7270551B2 (ja) 2023-05-10
TWI826404B (zh) 2023-12-21
CN111343944A (zh) 2020-06-26
KR20200088274A (ko) 2020-07-22
TW201924622A (zh) 2019-07-01
SG11202004600XA (en) 2020-06-29

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