CN111343944A - Replacement brush for electric toothbrush and electric toothbrush - Google Patents
Replacement brush for electric toothbrush and electric toothbrush Download PDFInfo
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- CN111343944A CN111343944A CN201880072720.5A CN201880072720A CN111343944A CN 111343944 A CN111343944 A CN 111343944A CN 201880072720 A CN201880072720 A CN 201880072720A CN 111343944 A CN111343944 A CN 111343944A
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- head
- electric toothbrush
- neck
- hair
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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
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Abstract
The invention provides a replacement brush for an electric toothbrush, which can obtain high cleaning feeling of molar teeth and reduce uncomfortable feeling caused by vibration in oral cavity by reducing the thickness of a head. The replacement brush for the electric toothbrush is a replacement brush (1B) for the electric toothbrush, which is detachably mounted on a toothbrush main body including a handle part of the electric toothbrush and comprises a neck part (3) and a head part (4), wherein the maximum thickness (T) of the head part (4) is 2-4 mm, the minimum thickness (D) of the neck part (3) is 3-5 mm, and the relation that D is larger than or equal to T is satisfied, and in the back side of the head part (4) and the neck part (3) opposite to the front side provided with a bristle implanting surface (4a), the head part (4) is arranged in a manner of deviating from the back side to the front side compared with the neck part (4).
Description
Technical Field
The present invention relates to a replacement brush for an electric toothbrush and an electric toothbrush.
The present application claims priority based on patent application No.2017-231177 filed in japan on day 11/30 in 2017, the contents of which are incorporated herein by reference.
Background
The electric toothbrush can provide a high cleaning feeling (a reliable cleaning feeling) which cannot be obtained by a general manual toothbrush (for example, see patent document 1 below). Therefore, the use of the electric toothbrush is effective in brushing teeth.
Electric toothbrushes are broadly classified into a rotary vibration type and an acoustic wave vibration type. Wherein, the sound wave vibration type is as follows: a structure in which a tuft is vibrated by transmitting vibration generated by high-speed rotation of an eccentric weight directly connected to a motor to a head (see, for example, patent document 2 below). In addition, in a general electric toothbrush, the following alternative structure is adopted: a replacement brush including a neck portion and a head portion is detachably attached to a replacement structure of a handle portion accommodating a battery and a motor.
In such an electric toothbrush of acoustic vibration type, the tips of the tufts (the tips of the bristles) vibrate at high speed and finely, and the feeling of cleaning the tooth surface, the interdental spaces, and the neck of the teeth can be expected to be improved. On the other hand, in a general manual toothbrush, the thickness of the head is reduced in order to improve the operability in the oral cavity and to secure a feeling of cleaning a narrow portion such as a molar (for example, see patent document 3 below).
However, in the case of the acoustic wave vibration type electric toothbrush, when the thickness of the head is reduced, the vibration width in the direction perpendicular to the bristle-implanted surface of the head is increased, and the user may feel uncomfortable with the vibration in the oral cavity. Specifically, as a main part where discomfort is felt in the oral cavity, oral tissue (inside of cheek, etc.) contacted by the back surface of the head may be mentioned. In particular, in a narrow part such as a molar, the back surface of the head tends to contact oral tissues, and thus the user tends to feel more uncomfortable.
Further, the increase in the vibration amplitude caused by the thinning of the head affects not only the contact between the back surface of the head and the oral tissue (gum, etc.), but also the contact between the hair bundle implanted on the front surface (hair implantation surface) of the head and the oral tissue (gum, etc.). That is, when a part of the tufts contacts the gum, depending on the way in which the user contacts the tufts, there may be a case where the user feels discomfort due to the vibration transmitted to the gum.
Therefore, in the electric toothbrush in which the thickness of the head is reduced, it is required to satisfy both "the feeling of cleaning the molar teeth" and "the reduction of the uncomfortable feeling caused by vibration".
Documents of the prior art
Patent document
[ patent document 1 ] Japanese Utility model patent No. 3148337
[ patent document 2 ] Japanese patent application laid-open No. 8-257043
[ patent document 3 ] Japanese patent application laid-open No. 2011-
Disclosure of Invention
[ problem to be solved by the invention ]
The present invention has been made in view of the above-described conventional circumstances, and an object of the present invention is to provide a replacement brush for an electric toothbrush which can provide a high-definition molar sensation of molar teeth and reduce a feeling of discomfort caused by vibration in the oral cavity by reducing the thickness of a head portion, and an electric toothbrush provided with the replacement brush for an electric toothbrush.
[ MEANS FOR solving PROBLEMS ] to solve the problems
In order to achieve the above object, the present invention provides the following means.
That is, the invention of claim 1 is a replacement brush for an electric toothbrush which is detachably attached to a toothbrush main body including a grip portion of the electric toothbrush and includes a neck portion and a head portion,
the electric toothbrush includes a handle part, a neck part extending from a distal end of the handle part, and a head part provided at a distal end of the neck part, and is driven by an electric motor to generate vibration and clean an oral cavity by a plurality of tufts implanted in a bristle implanting surface of the head part,
the head portion has a maximum thickness T of 2 to 4mm and a minimum thickness D of 3 to 5mm, and satisfies a relation D.gtoreq.T, and the head portion is provided on a back surface side of the head portion and the neck portion opposite to a front surface side on which the flocked surface is provided, so as to be offset from the neck portion in a direction from the back surface side to the front surface side.
The invention according to claim 2 is the replacement brush for an electric toothbrush according to claim 1, wherein a level difference H is provided between a back surface of the head and a back surface of the neck, and the level difference H is 0.5 to 3 mm.
The invention according to claim 3 is the replacement brush for an electric toothbrush according to claim 1 or 2, wherein the head portion is provided to be inclined with respect to the neck portion in a direction from a back side toward a front side, and an angle formed by an axis of the head portion parallel to the bristle surface and an axis of the neck portion parallel to a detaching direction of the grip portion is 1 to 5 °.
The invention according to claim 4 is the replacement brush for an electric toothbrush according to any one of claims 1 to 3, wherein a distance between a distal end of the head portion and a distal end of the support shaft is 40 to 60mm in a state where the replacement brush for an electric toothbrush is attached to the distal end of the support shaft protruding in the axial direction from the distal end of the handle portion.
The invention according to claim 5 is the replacement brush for an electric toothbrush according to any one of claims 1 to 4, wherein the head portion is provided on a front surface side of the head portion and the neck portion on a side where the bristle surface is provided, the head portion being offset from the neck portion in a direction from a back surface side to a front surface side.
The invention according to claim 6 is the replacement brush for an electric toothbrush according to any one of claims 1 to 5, further comprising a vibration suppressing portion connected to a part of the back surface of the head portion and the neck portion from the front end of the neck portion to the back surface of the head portion.
Further, the invention according to claim 7 is an electric toothbrush comprising a handle portion, a neck portion extending from a distal end of the handle portion, and a head portion provided at a distal end of the neck portion, the electric toothbrush being driven by electricity to generate vibration and cleaning an oral cavity by a plurality of tufts implanted in a bristle-implanted surface of the head portion, wherein the electric toothbrush has a structure in which a replacement brush including the neck portion and the head portion is detachably attached to a toothbrush main body including the handle portion, and the electric toothbrush comprises the replacement brush for an electric toothbrush according to any one of claims 1 to 6 as the replacement brush.
[ Effect of the invention ]
As described above, the present invention can provide a replacement brush for an electric toothbrush, which can provide a high-definition molar sensation of molar teeth and can reduce a feeling of discomfort caused by vibration in the oral cavity by reducing the thickness of a head, and an electric toothbrush including the replacement brush for an electric toothbrush.
Drawings
Fig. 1 is a side view showing a configuration of an electric toothbrush including a replacement brush for an electric toothbrush according to an embodiment of the present invention.
Fig. 2 is a side view illustrating a structure of a replacement brush for an electric toothbrush shown in fig. 1.
Fig. 3 is a front view showing a structure of a replacement brush for an electric toothbrush shown in fig. 1.
Fig. 4 is a rear view showing a structure of the replacement brush for the electric toothbrush shown in fig. 1.
Fig. 5 is a front view of the head of the electric toothbrush replacement brush shown in fig. 1, as viewed from the implanted hair side.
Fig. 6 is a cross-sectional view of the head along the line X-X shown in fig. 5.
Fig. 7 is a front view showing another arrangement example of the tufts in the hair-setting surface.
Fig. 8 is a side view showing a state in which a hair bundle is implanted in the hair-planted surface of the head portion shown in fig. 7.
Fig. 9 is a front view showing another arrangement example of the tufts in the hair-setting surface.
Description of the symbols
1 … electric toothbrush; 1a … toothbrush body; 1B … (for electric toothbrushes) replacement brushes; 2 … handle part; 3 … neck; 4 … head; 4a … flocked surface; 5 … tufts; 5a, 5c, 5e … tuft No. 1; 5b, 5d, 5f … No.2 tufts; 6 … fulcrum; 7 … implanting pores; 8 … vibration suppression section; s1 … central hair-planting area; s2 … outer hair planting area; s3 … peripheral hair-planting area; s4 … center hairless area
Detailed Description
Hereinafter, a replacement brush for an electric toothbrush and an electric toothbrush to which the present invention is applied will be described in detail with reference to the accompanying drawings.
In order to make the features more easily understood, the drawings used in the following description may schematically show the features for convenience, and the dimensional ratios of the respective constituent members and the like are not necessarily the same as those in reality. In some cases, the illustration of the tufts is omitted, and only the implanted holes in which the tufts are implanted are shown.
In the following description, the side of the head 4 on which the flocked surface 4a is provided is referred to as the front surface (front surface) side of the replacement brush 1B (electric toothbrush 1), and the side of the head 4 opposite to the side on which the flocked surface 4a is provided is referred to as the back surface (rear surface) side of the replacement brush 1B (electric toothbrush 1).
As an embodiment of the present invention, for example, an electric toothbrush 1 shown in fig. 1 includes a handle portion 2, a neck portion 3 extending in an axial direction from one end (tip) of the handle portion 2, and a head portion 4 provided at the tip of the neck portion 3, and cleans an oral cavity by a plurality of tufts 5 implanted in a bristle surface 4a of the head portion 4 while generating vibrations by electric driving.
The electric toothbrush 1 of the present embodiment has the following alternative structure: a replacement brush (hereinafter, referred to as a replacement brush) 1B for an electric toothbrush including a neck portion 3 and a head portion 4 is detachably attached to a replacement structure of a toothbrush main body 1A including a handle portion 2.
The grip portion 2 constituting the toothbrush main body 1A is a portion to be gripped by a user, and the shape thereof is not particularly limited, but is, for example, substantially columnar. Inside the grip portion 2, although not shown, a battery housing portion that houses a battery (for example, an AA dry battery or an AAA dry battery) serving as an internal power source, a motor that is rotationally driven by electricity supplied from the battery, and an eccentric weight directly connected to the motor are disposed.
The toothbrush body 1A is configured to transmit vibration to a support shaft 6 protruding from the tip of the handle 2 in the axial direction by a sonic vibration type in which vibration is generated by the eccentric weight rotating at high speed by the driving of the motor.
The rotation speed of the motor is preferably 6000 to 16000rpm, more preferably 7000 to 15000 rpm. When the rotation speed of the motor is less than 6000rpm, the feeling of cleaning by the electric toothbrush 1 is insufficient. On the other hand, if the rotation speed of the motor is greater than 16000rpm, the uncomfortable feeling due to vibration increases.
Although not shown, the toothbrush main body 1A can exchange the battery with the battery housing part by removing a cover (cap) detachably attached to the bottom of the handle part 2. In the toothbrush main body 1A, the user can switch between supply and interruption of power from the battery to the motor (power ON/OFF) by operating a power button provided ON the front surface of the handle portion 2.
The toothbrush body 1A is not limited to the configuration using the battery (primary battery) as the internal power source, and may be configured using a battery (secondary battery) such as a nickel-cadmium battery, a nickel-hydrogen battery, or a lithium ion battery as the internal power source. When a battery is mounted as an internal power supply, the internal power supply may be charged from an external power supply (commercial power supply) by a charger. In this case, from the viewpoint of high usability and safety, a contactless charging system is preferably used.
In addition, the toothbrush body 1A may be configured to switch the power ON/OFF by the operation of the power button, or may be configured to switch the intensity of vibration by the operation of the operation button.
As shown in fig. 1 to 4, the replacement brush 1B is formed by integrally forming the neck portion 3 and the head portion 4 with a thermoplastic resin, and is integrally attached to the distal end of the toothbrush main body 1A by connecting the proximal end portion of the neck portion 3 to the support shaft 6 of the toothbrush main body 1A. A shaft hole (not shown) into which the support shaft 6 of the toothbrush main body 1A can be inserted is provided in the axial direction at the proximal end of the neck portion 3. 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.
In the electric toothbrush 1, the replaceable brush 1B is attached to the toothbrush main body 1A, and the vibration transmitted from the support shaft 6 is transmitted to the head 4 through the neck 3, and the bristle bundle 5 is vibrated.
Here, in the replacement brush 1B (the neck portion 3 and the head portion 4), a resin having high mechanical strength (for example, Polyacetal (POM), polypropylene (PP), or the like) is preferably used. This enhances the insertion strength of the support shaft 6 into the shaft hole, and suppresses an increase in the vibration width in the direction perpendicular to the hair-planted surface 4a of the head 4 even when the thickness of the head 4 is reduced.
The flexural modulus of elasticity (JIS K7171) of the resin forming the neck portion 3 and the head portion 4 is preferably 1000 to 3000MPa, more preferably 1500 to 3000MPa, and still more preferably 2000 to 3000 MPa.
The neck portion 3 has a shape tapered from the base end side toward the tip end side. Thus, the front end of the neck portion 3 is a portion having the largest diameter reduction. Further, as for the shape of the neck portion 3, in order to facilitate brushing of molar teeth, at least the front face 3a side of the neck portion 3 may be set to a gently curved surface (curve) shape.
The minimum thickness D of the neck 3 is preferably 3 to 5mm, and more preferably 3.5 to 4.5 mm. The thickness of the neck portion 3 is the thickness between the front surface 3a and the back surface 3b 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 having the largest diameter reduction (the thickness of the cross section in the direction perpendicular to the extending direction of the neck portion 3 with reference to the point P on the back surface 3b side where this portion is formed in fig. 2).
When the minimum thickness D of the neck portion 3 is less than 3mm, the vibration width in the direction perpendicular to the flocked surface 4a of the head portion 4 becomes large, and the vibration transmitted from the neck portion 3 to the head portion 4 also becomes large, so that the uncomfortable feeling due to the vibration increases. On the other hand, if the minimum thickness D of the neck 3 is more than 5mm, the mouth lip is opened to a large extent during brushing, and the operability in the oral cavity is not ensured, and the feeling of cleaning the molar teeth is reduced.
As shown in fig. 5 and 6, the head 4 is a part in the oral cavity brushed by the plurality of tufts 5, and the plurality of tufts 5 are vibrated at the time of brushing, whereby the effect of removing tartar from the minute parts such as the tooth surface, the tooth neck part, and the interdental part can be improved.
The head 4 may have any shape and size that can be easily brushed into the oral cavity, and the shape is not particularly limited, but generally has a shape that is formed into a substantially rectangular parallelepiped shape with rounded corners. Further, the head portion 4 may be in a shape that is gradually narrowed in width from the base end side toward the tip end side. The flocked surface 4a and the back surface 4b of the head 4 are formed flat surfaces.
The back surface 4b of the head 4 may have a tapered shape with a thickness gradually decreasing from the base end side toward the tip end side, or may have a rounded shape with a bulge in the center on the back surface 4b side of the head 4.
The head 4 of the present embodiment has the following shape in a front view: the neck portion 3 is expanded in the width direction from the distal end, then extends with the same width, and then narrows in the width direction, reaching the shape of the boundary R with the neck portion 3.
The boundary R is an end point of a curve forming a corner close to the neck 3 in the front view shape of the head 4, that is, a position where the bending direction of the curve forming the corner changes. More specifically, the boundary R is the following position: the curve or straight line in the head 4 from the front view, which forms both sides of the narrowed width near the corner cut portion of the neck 3, changes to the position of the curve or straight line of the widened width, or the straight line of the same width. Further, in the case of the electric toothbrush 1 in which the neck portion 3 is widened in width as it goes toward the grip portion 2 in the front view, the boundary R coincides with a position in which the width in the head portion 4 and the neck portion 3 is smallest in the front view. The minimum width in the frontal view of the neck 3 is preferably 3 to 5mm, more preferably 3.5 to 4.5 mm.
In the hair-planting surface 4a of the head 4, a plurality of hair-planting holes 7 having the same diameter are arranged in a staggered manner. A plurality of bristles (long fibers) are bundled and folded into two, and a metal anti-slip tool (not shown) called a flat wire (flat plate) is interposed therebetween, and the bristles are driven into the implantation holes 7, thereby implanting the bundles 5 into the implantation holes 7. In fig. 5, the hair bundle 5 is not shown, and only the implanted hole 7 is shown.
The implantation holes 7 are not limited to a plurality of staggered arrangement, but may be a plurality of lattice-like arrangement. The inner diameter of the implanted hole 7 is related to the number of implanted hair bundles 5, and therefore affects the hardness and the feeling of use of the hair bundles 5, and the feeling of use can be adjusted to some extent by controlling the thickness and the hair length of the hair bundles 5 used in the implantation, but the inner diameter of the implanted hole 7 is preferably in the range of 1.0 to 3.0mm in general.
The material of the bristles of the tufts 5 is not particularly limited, but examples thereof include: synthetic resin materials such as polyamides (e.g., 6-12 nylon and 6-10 nylon), polyesters (e.g., polyethylene terephthalate, polybutylene terephthalate and polypropylene terephthalate), polyolefins (e.g., polypropylene), and elastomers (e.g., olefin-based and styrene-based resins). These resin materials may be used in combination of plural kinds or more, and for example, different resin materials may be used for the core portion and the sheath portion as in a core-sheath structure or the like.
The cross-sectional shape of the brush is usually circular, but is not limited to this shape, and may be any shape such as an ellipse, a triangle, a quadrangle, a hexagon, a star, a three-leaf clover shape, a four-leaf clover shape, and the like.
The hair length of the hair bundle 5 for adults is preferably 8mm to 13mm, and the hair length of the hair bundle 5 for children is preferably 6mm to 9mm, from the hair-planting surface 4a of the head 4. The thickness (maximum diameter) of the bristles is preferably 0.12mm to 0.26mm from the viewpoint of usability and feeling in use in the oral cavity. Further, a plurality of bristles having different thicknesses may be used in any combination in consideration of the feeling of use, the feeling of brushing, the cleaning effect, the durability, and the like.
As a method of implanting the hair bundle 5, in addition to the flat wire implanting method in which the above-described hair bundle 5 of bristles is folded in two and the flat wire is sandwiched therebetween and implanted into the hair hole 7, there can be used: a thermal welding method in which the lower end of the bundle of bristles 5 is pressed into the molten resin to be the head 4 and fixed; or an in-mold (in-mold) method in which the lower end of the bundle 5 is heated to form a molten mass, and then the molten resin is filled in the cavity of the mold and is integrally molded with the head 5.
As shown in FIG. 3, the width W of the head 4 is preferably 6 to 16mm, more preferably 8 to 15mm, and still more preferably 10 to 12 mm. If the width is less than the upper limit value, the insertion into a narrow part such as a molar tooth can be performed without giving a feeling of discomfort due to vibration. Further, the smaller the width W of the head 4 is, the less the uncomfortable feeling accompanying the vibration of the head 4 can be reduced. Further, if the width is not less than the lower limit value, a sufficient amount of the hair bundle 5 can be implanted, and therefore, the cleaning feeling of the molar teeth and the like can be ensured. Further, even if the head 4 vibrates, the toothbrush can be brought into close contact with the cleaning site, and stable oral cleaning can be performed.
As shown in FIG. 3, the length V of the head 4 is preferably 20 to 35mm, more preferably 20 to 30 mm. If the length is equal to or less than the upper limit value, the displacement of the brush head tip caused by the vibration of the head 4 is small, which contributes to reducing the uncomfortable feeling. Further, if the length is equal to or greater than the lower limit value, a sufficient amount of the hair bundle 5 can be implanted, and therefore, the feeling of cleaning of the molar teeth and the like can be ensured.
When the width W of the head 4 is 12 to 16mm, the length V of the head 4 is 28 to 33mm, whereby the uncomfortable feeling accompanying the vibration of the head 4 can be reduced. For example, in the case of a wide brush head having a large width, the length V of the head 4 can be shortened to ensure the advantage of efficiently brushing the cleaning region over a wide range, and the above-described uncomfortable feeling can be further reduced.
However, in the replacement brush 1B of the present embodiment, by thinning the thickness of the head 4, the maximum thickness T of the head 4 is the same as the minimum thickness D of the neck 3 (D ═ T) or smaller than the minimum thickness D of the neck 3 (D > T).
The maximum thickness T of the head is preferably 2 to 4mm, and more preferably 2.5 to 3.5 mm. The thickness of the head 4 is the thickness between the front surface (flocked surface) 4a and the back surface 4b of the head 4. By reducing the thickness of the head 4, the operability in the oral cavity can be improved, and the feeling of cleaning of narrow parts such as molar teeth can be ensured.
On the back surface side of the head 4 and the neck 3, the head 4 is provided so as to be shifted (shifted) from the back surface side toward the front surface side in comparison with the neck 3. That is, in the replacement brush 1B of the present embodiment, as shown in fig. 2, an extension line L1 extending in the axial direction of the back surface 4B of the head 4 is positioned on the front surface side of an extension line L2 passing through the front end P of the back surface 3B of the neck 3 and being parallel to the extension line L1.
In addition, the front end P of the neck 3 represents: the starting point (inflection point) when the back surface 3b of the neck portion 3 is shifted from the back surface side toward the front surface side. That is, the front end P of the neck portion 3 is located at the following positions: the inclination of the straight line or the curved line forming the back surface 3b of the neck portion 3 changes from the straight line or the curved line forming the back surface 4b of the head portion 4. When the back surface 4b of the head 4 is curved, the extension line L1 may be an extension line passing through a point on the back surface 4b side where the maximum thickness T of the head 4 is formed and parallel to the hair-planted surface 4 a.
Further, a level difference H is provided between the back surface 4b of the head 4 and the back surface 3b of the neck 3. The step H corresponds to the amount of offset (shift) of the extension line L1 from the extension line L2.
The difference H is preferably 0.5 to 3.0mm, more preferably 0.5 to 2.0 mm. This ensures a space between the back surface 4b of the head 4 and the oral tissue (inside of the cheek, etc.), suppresses contact between the back surface 4b of the head 4 and the oral tissue, and reduces discomfort caused by vibration.
On the other hand, if the level difference H is less than 0.5mm, the effect of making the back surface 4b side of the head 4 thinner than the back surface 3b side of the neck 3 is insufficient. On the other hand, if the step H is larger than 2.0mm, the head 4 is excessively positioned on the front side with respect to the axial direction (axis) of the grip 2, so that the operability in the oral cavity is lowered and the cleaning feeling of the molar teeth is lowered.
The distance A between the tip of the head 4 and the tip of the support shaft 6 is preferably 40 to 60mm, more preferably 45 to 55 mm. The distance a is the length of a line segment connecting the tip of the head 4 and the tip of the support shaft 6. When the distance a is less than 40mm, vibration is strongly transmitted to the head 4, thus causing discomfort due to excessive vibration. On the other hand, if the distance a is greater than 60mm, the vibration transmitted to the head 4 becomes weak, and therefore the feeling of cleaning is insufficient.
In the replacement brush 1B of the present embodiment, the space between the back surface 4B of the head 4 and the oral tissue (inside of the cheek, etc.) during brushing can be secured by making the thickness of the back surface 4B side of the head 4 thin.
This can suppress contact between the back surface 4b of the head 4 and the oral tissue, and reduce the feeling of discomfort caused by vibration.
Further, on the front surface side of the head portion 4 and the neck portion 3, the head portion 4 is provided so as to be offset (displaced) from the back surface side toward the front surface side than the neck portion 3. That is, in the replacement brush 1B of the present embodiment, as shown in fig. 2, an extension line L3 along the axial direction of the hair-planted surface 4a of the head 4 is positioned on the front surface side of an extension line L4 passing through the front end Q of the front surface 3a of the neck 3 and being parallel to the extension line L3. The front end Q indicates a starting point (inflection point) when the front surface 3a of the neck portion 3 is shifted from the back surface side toward the front surface side.
Further, the amount of deviation (shift) of the extension line L3 from the extension line L4 is preferably more than 0mm and 1mm or less, more preferably more than 0mm and 0.5mm or less. In the replacement brush 1B of the present embodiment, by offsetting the flocked surface 4a of the head 4 toward the front surface side, transmission of vibration from the neck 3 to the head 4 can be suppressed as compared with the case where the flocked surface is not offset.
Thus, even when the thickness of the head 4 is reduced, the amplitude of vibration in the direction perpendicular to the hair-planted surface 4a of the head 4 can be reduced, and the uncomfortable feeling due to vibration in the oral cavity can be reduced. On the other hand, if the amount of displacement is larger than necessary, the axial direction (axis) of the head 4 with respect to the grip 2 is excessively deviated, so that the operability in the oral cavity is lowered and the cleaning feeling of the molar teeth is lowered.
In addition, in the replaceable brush 1B of the present embodiment, the following configuration is formed: the bristle surface 4a of the head 4 is offset (shifted) from the front surface 3a of the neck 3 in the direction from the back surface side to the front surface side. In some cases, the hair-planted surface 4a of the head 4 and the front surface 3a of the neck 3 may be continuously (straightly) connected to each other.
The head 4 is provided to be inclined from the back surface side toward the front surface side with respect to the neck 3. That is, in the replacement brush 1B of the present embodiment, as shown in fig. 2, the axis T1 (the extension line of the extension line L3) of the head 4 parallel to the flocked surface 4a is inclined toward the front surface side with respect to the axis T2 (the extension line along the center axis of the shaft hole) of the neck 3 parallel to the detaching direction of the grip 2.
At this time, the angle (hereinafter, referred to as the inclination of the head 4) α formed by the axis T1 of the head 4 and the axis T2 of the neck 3 is preferably 1 to 5 °, and more preferably 2 to 4 °, whereby not only contact between the back surface 4b of the head 4 and oral tissues (such as the inner side of the cheek) can be suppressed, but also the feeling of cleaning of the molars and the inner sides of the teeth can be improved.
On the other hand, when the inclination α of the head 4 is less than 1 °, the above-described effect is not sufficient, and the vibration from the toothbrush main body 1A is easily transmitted to the head 2, and therefore, the vibration width in the direction perpendicular to the implanted surface 4a becomes large, and the uncomfortable feeling accompanying the vibration during use is promoted, whereas when the inclination α of the head 4 is greater than 5 °, the attachability of the head 4 to the molar is reduced, and the position of the head 4 is excessively away from the axial direction (axis line) of the grip portion 2, and therefore, the vibration width in the direction perpendicular to the implanted surface 4a becomes large, and the uncomfortable feeling accompanying the vibration during use is promoted.
In the replacement brush 1B according to the present embodiment, the head 4 is provided so as to be inclined from the back side toward the front side with respect to the neck 3, but the present invention is not necessarily limited to this configuration, and in some cases, the axis T1 of the head 4 may be parallel to the axis T2 of the neck 3 (α is 0 °).
As shown in fig. 2 and 4, the replacement brush 1B of the present embodiment includes a vibration suppression portion 8, which is partially connected from the front end of the neck portion 3 to the back surface 4B of the head portion 4, on the back surfaces of the head portion 4 and the neck portion 3.
The vibration suppressing portion 8 is formed integrally with the head portion 4 and the neck portion 3, and the vibration suppressing portion 8 has a shape gradually narrowing in width and gradually decreasing in height from the front end P of the back surface 3b of the neck portion 3 toward the back surface 4b of the head portion 4. The vibration suppressing portion 8 is formed as an inclined surface smoothly connecting the back surface 4b of the head portion 4 and the back surface 3b of the neck portion 3. The tip of the vibration suppressing portion 8 is located on a line in the width direction passing through the rear end of the 2 nd bundle 5b, and the 2 nd bundle 5b is located on the rearmost end (base end) side of an outer flocked area S2 described later.
The vibration suppression section 8 suppresses excessive vibration in a direction perpendicular to the hair-planted surface 4a of the head 4.
In addition, in a state where the thickness of the back surface 4b side of the head 4 is reduced, the strength of the connection portion between the head 4 and the neck 3 can be increased by the vibration suppressing portion 8. This can suppress contact between the back surface 4b of the head 4 and oral tissues (such as the inner side of the cheek) and reduce discomfort caused by light vibration.
As shown in fig. 5, the hair-planted surface 4a of the head 4 is provided, at the central portion thereof, with a central hair-planted region S1 formed by a plurality of hair-planted holes 11 arranged in the longitudinal direction of the head 4, and at both sides of the central hair-planted region S1, with outer hair-planted regions S2 formed by a plurality of hair-planted holes 11 arranged in the longitudinal direction of the head 4.
In the present embodiment, for example, in the plurality of implanted holes 11 arranged in a staggered manner in the implanted surface 4a of the head 4, the central implanted region S1 is formed by 3 rows of implanted holes 11 arranged along the longitudinal direction of the head 4 in the central portion of the implanted surface 4 a. On the other hand, a pair of outer hair-planted regions S2 are formed by 2 rows of hair-planted holes 11 arranged along the longitudinal direction of the head 4 on both sides of the central hair-planted region S1.
As shown in fig. 6, in each implantation hole 11 of the central implantation area S1, a tuft 5 (hereinafter, referred to as a 1 st tuft 5 a) is implanted, which is composed of tapered bristles (hereinafter, referred to as a 1 st tapered bristle) having a diameter that decreases toward the tip of the bristle. On the other hand, in each implantation hole 11 of the outer implantation region S2, a tuft 5 (hereinafter, referred to as a 2 nd tuft 5 b) is implanted, which is composed of tapered bristles (hereinafter, referred to as a 2 nd tapered bristle) having a tip diameter larger than that of the 1 st tapered brush.
Moreover, the second hair bundle 5b is planted in the hair planting holes 7a and 7b located on the front end side and the rear end side of the central hair planting region S1, respectively. Thus, on the hair-planted surface 4a of the head 4, the 2 nd hair bundle 5b planted on the front end side and the rear end side of the central hair-planted region S1 and the 2 nd hair bundle 5b planted on the outer hair-planted region S2 are arranged so as to surround the 1 st hair bundle 5a planted on the central hair-planted region S1. That is, the bristle surface 4a of the head 4 is provided with: a plurality of 2 nd hair bundles 5b implanted in the outer hair-implanted region S2, and an outer hair-implanted region S3 in which the plurality of 2 nd hair bundles 5b are implanted around the central hair-implanted region S1 in a row along the circumferential direction of the head 4.
Further, the bristle density of the 1 st hair bundle 5a planted in the central bristle planting region S1 is set higher than the bristle density of the 2 nd hair bundle 5b planted in the outer bristle planting region S2. The "flocked density" here is a value obtained by dividing the total area of the flocked holes by the area of the flocked holes, "the total area of the flocked holes" is a value obtained by adding the areas of the flocked holes 11 constituting the respective flocked regions S1, S2, and the "flocked area" is expressed by the area of the surrounding region obtained by connecting the outer sides of the flocked holes 11 located on the outer peripheries of the respective flocked regions S1, S2 with a straight line based on "JIS S3016-.
In the present embodiment, the 1 st bundle 5a of the central bristle field S1, which has a higher bristle density than the outer bristle field S2 and is formed of the 1 st tapered bristles having a tip diameter larger than the 2 nd tapered bristles, can be used to brush the tooth surface efficiently, and the 2 nd bundle 5b, which has a lower bristle density than the central bristle field S1 and is formed of the 2 nd tapered bristles having a tip diameter larger than the 1 st tapered bristles, can be used to implant the outer bristle field S2, which is relatively easy to contact the gum, so that the intensity of vibration transmitted to the gum during brushing can be reduced, and discomfort caused by vibration in the oral cavity can be reduced.
Further, since the 1 st tuft 5a of the central tuft region S1 having a high tuft density is formed of the 1 st tapered bristles having a tip diameter larger than that of the 2 nd tapered bristles, the bristle stiffness of the 1 st tuft 5a can be utilized to generate a good vibration transmission, thereby improving the feeling of cleaning by vibration.
In the present embodiment, the 2 nd hair bundle 5b is planted in the outer peripheral hair-planted region S3 surrounding the 1 st hair bundle 5a planted in the central hair-planted region S1. Thus, when brushing the molar teeth, the 2 nd hair bundle 5b is likely to contact the gum in all directions, and the contact feeling when the tip of the hair contacts the gum can be further improved.
In the present embodiment, the length of the 2 nd hair bundle 5b planted in the outer hair-planted region S2 is higher than the length of the 1 st hair bundle 5a planted in the central hair-planted region S1. Specifically, the maximum height of the 1 st tuft 5a is represented by t1[mm]The maximum height of the 2 nd tuft 5b is set to t2[mm]When it is preferable that t is 0.5 mm. ltoreq.t2-t1Less than or equal to 3.0 mm.
I.e. by making the maximum height t of the 2 nd tuft 5b2Greater than maximum height t of No. 1 tuft 5a1The height is high, and the penetration of the 2 nd hair bundle 5b into the tooth neck and the inter-dental space can be improved. Further, since the 2 nd bundle of bristles 5b having a long bristle length is naturally spread when the bristle tips contact the tooth surface, the bristle tips are attached to the tooth neck portion, and thus the brushing effect on the tooth neck portion can be improved by a simple operation without paying attention to the angle at which the bristle tips contact the tooth neck portion. Further, when the 2 nd hair bundle 5b having a long hair length is brought into contact with the gum, the 2 nd hair bundle 5b plays a role of buffering, thereby buffering vibration and reducing a feeling of discomfort caused by vibration in the oral cavity.
Therefore, the difference t in hair length between the 1 st hair bundle 5a in the central hair-planted region S1 and the 2 nd hair bundle 5b in the outer hair-planted region S2 is obtained2-t1The thickness is set in the range of 0.5 to 3.0mm, more preferably 0.5 to 2.0mm, and still more preferably 0.5 to 1.0mm, so that the tooth surface cleaning property and the contact feeling with the gum can be improved.
In the present embodiment, the diameter of the tip of the 1 st tapered bristle is set to 40 to 80 μm, and the diameter of the tip of the 2 nd tapered bristle is set to 5 to 30 μm, whereby the cleaning ability in the cleaning interdental space on the tooth surface can be balanced and maintained well. Further, cleaning of the tooth surface and reduction of uncomfortable feeling accompanying vibration can be achieved at the same time.
In the present embodiment, it is preferable that at least 2 rows or more of the implantation holes 11 are provided in the central implantation region S1 so as to be aligned in the longitudinal direction of the head 4. Thus, the 1 st tufts 5a are planted in the central tuft region S1 in 2 or more rows along the longitudinal direction of the head 4, and sufficient plaque removing force on the tooth surface and sufficient feeling of cleaning by vibration can be obtained by these 1 st tufts 5 a.
In the present embodiment, the bristle density of the 1 st hair bundle 5a planted in the central bristle planting region S1 is ρ1The bristle density of the 2 nd bristle bundle 5b implanted in the outer bristle implanting region S2 is ρ2When it is used, it is preferable that 0.40. ltoreq. rho be satisfied1≤0.70、0.20≤ρ2≤0.40、1.2≤ρ1/ρ2A relation less than or equal to 2.4.
In the present embodiment, the bristle density ρ of the central bristle-implanted region S1 is adjusted1Is set to 0.40. ltoreq. rho1A range of 0.70 or less, more preferably 0.50 or less ρ1The range of ≦ 0.60 will moderately enhance the stiffness of the bristles of tuft No. 15 a in central tuft field S. On the other hand, the outer side flocking region S2 is flocked with the flocking density rho2Is set to 0.20. ltoreq. rho2A range of 0.40 or less, more preferably 0.30 or less ρ2Less than or equal to 0.40, and the 2 nd tuft 5b in the outer tuft zone S2 can be deflected moderately.
Furthermore, the hair-planting density ρ of the 2 nd hair bundle 5b planted in the outer hair-planting region S2 is set2The hair-planting density rho of the 1 st hair bundle 5a planted in the central hair-planting region S11The ratio of (hereinafter, referred to as a bristle density ratio) (. rho)1/ρ2When the range of 1.2 to 2.4 is set, the tooth surface can be brushed efficiently by the 1 st hair bundle 5a of the central hair-planted region S1 having a higher hair-planted density than the outer hair-planted region S2, and the tooth neck and the interdental portions can be brushed efficiently by the 2 nd hair bundle 5b of the outer hair-planted region S2 having a lower hair-planted density than the central hair-planted region S1, so that the tartar removal capability in the fine portions such as the tooth surface, the tooth neck, and the interdental portions can be improved.
In the present embodiment, the 2 nd hair bundle 5b is implanted into the respective hair implantation holes 7a and 7b located on the front end side and the rear end side of the central hair implantation region S1, but the 1 st hair bundle 5a may be implanted instead of the 2 nd hair bundle 5 b. The 1 st and 2 nd tufts 5a and 5b are not limited to the above-described tapered bristles, and any bristles, such as straight bristles having a constant diameter toward the tips of the bristles, may be used.
As described above, in the electric toothbrush 1 including the replacement brush 1B of the present embodiment, by making the thickness of the head 4 thin, a high-definition brushing feeling of the molar teeth can be obtained, and excessive vibration caused by making the thickness of the head 4 thin can be suppressed, so that a feeling of discomfort caused by vibration in the oral cavity can be reduced.
The present invention is not necessarily limited to the above embodiments, and various modifications may be made without departing from the scope of the present invention.
For example, the arrangement of the tufts 5 on the hair-setting surface 4a is not necessarily limited to the configuration shown in fig. 5 and 6, and may be changed as appropriate.
For example, in another arrangement example shown in fig. 7, of the plurality of implanted holes 11 arranged in a staggered manner in the implanted surface 4a of the head 4, a central implanted region S1 is formed in the central portion of the implanted surface 4a by 3 rows of implanted holes 11 arranged along the longitudinal direction of the head 4. On the other hand, on both sides of the central hair-planted region S1, a pair of outer hair-planted regions S2 are formed by 1 row of hair-planted holes 11 aligned in the longitudinal direction of the head 4.
The diameters of the hair implantation holes 11 in the outer hair implantation region S2 are larger than the diameters of the hair implantation holes 11 in the central hair implantation region S1. Thus, as shown in fig. 8, the bundle diameter of the 2 nd bundle 5d planted in each of the implanted holes 11 in the outer implanted hair region S2 is larger than the bundle diameter of the 1 st bundle 5c planted in each of the implanted holes 11 in the central implanted hair region S1.
Furthermore, the hair length of tuft 5c 1 is higher than the hair length of tuft 5d 2. In tufts 1, 5c and 5d, tapered bristles can be used. The 1 st and 2 nd tufts 5c and 5d are not limited to the above-described tapered bristles, and any bristles, such as straight bristles having a constant diameter toward the tip of the bristle, may be used.
Further, the following constitution is possible: although not shown in the drawings, the bristle surface 4a of the head 4 is provided with: the plurality of 2 nd tufts 5d implanted in the outer tuft region S2 are arranged in the circumferential direction of the head 4 so as to surround the 1 st tuft 5c implanted in the central tuft region S1, and the outer peripheral tuft region in which the plurality of 2 nd tufts 5d are implanted is arranged in the circumferential direction of the head 4.
In such a configuration, the 2 nd tufts 5d can be easily brought into contact with the gum by making the tuft diameter of the 2 nd tufts 5d larger than the tuft diameter of the 1 st tufts 5c, so that the pressure applied to the gum by the 2 nd tufts 5d can be alleviated, and a soft contact feeling to the gum can be obtained. In addition, the uncomfortable feeling of vibration transmitted to the gum can be reduced at the time of brushing. Further, by making the hair length of the 1 st hair bundle 5c longer than the hair length of the 2 nd hair bundle 5d, both a soft contact feeling to the gum and a cleanability of the tooth neck portion can be achieved.
In another arrangement example shown in fig. 9, for example, a central hair-planted region S1 in which a plurality of first hair bundles 5e are planted in parallel in the longitudinal direction of the head 4 is provided on the tip side of the central portion of the hair-planted surface 4 a; a central hairless region S4 where no tufts are present is provided on the base end side of the central portion of the hair-planted surface 4 a; and outer hair-planted regions in which a plurality of the 2 nd hair bundles 5f are planted in a row in the longitudinal direction of the head 4 are provided on both sides of the central hair-planted region S1 and the central hair-free region S4.
In tufts 1, 5e and 2, 5f, tapered bristles can be used. The 1 st and 2 nd tufts 5e and 5f are not limited to the above-described tapered bristles, and any bristles, such as straight bristles having a constant diameter toward the tips of the bristles, may be used.
With this configuration, the 2 nd tufts 5f on both sides of the central bristle-free region S4 are easily bent, and the penetration of the bristle tips into the neck of the tooth is improved. On the other hand, since the decrease in rigidity and the fluffy feeling of the 1 st and 2 nd tufts 5e and 5f can be suppressed, the tartar scraping property can be sufficiently ensured. Further, the 2 nd tufts 5f on both sides of the central bristle-free region S3 are bent, whereby the vibration can be damped, and the uncomfortable feeling due to the vibration in the oral cavity can be reduced.
[ examples ] A method for producing a compound
Hereinafter, the effects of the present invention will be more apparent from the examples. The present invention is not limited to the following examples, and can be carried out with appropriate modifications within the scope not changing the gist thereof.
Examples 1 to 12 and comparative examples 1 to 4
In the present example, as shown in table 1 below, the replaceable brushes of examples 1 to 12 and comparative examples 1 to 4 were manufactured, which were different in "maximum thickness T [ mm ] of the head", "minimum thickness D [ mm ] of the neck", "step difference H [ mm ]", "distance a [ mm ] between the tip of the head and the tip of the support shaft", "inclination α °", "offset amount [ mm ] of L3 with respect to L4", "material of the head and the neck", "head width W [ mm ]", and "head length V [ mm ]".the number of rotations of the motor was 9000 rpm.
The hair holes of the head were arranged so that the "diameter" was 1.6mm, the "line pitch" was 2.5mm, and the "row pitch" was 2.2mm (both hole center-to-hole distances). Based on the above-mentioned pitch, the number of columns and the number of rows are set according to the width and the length of each head, and the number of columns is 4 to 6 in the width direction and 7 to 9 in the length direction.
The bristles were ST bristles (tapered bristles) of PBT (polybutylene terephthalate) resin, and 23 bristles having a base diameter of 7.5mil were implanted in each implantation hole. Because of the flat wire bristles, there are substantially 46 wires.
Further, the hair length was 12 mm.
Then, evaluation tests were performed on the electric toothbrushes using the replacement brushes of examples 1 to 12 and comparative examples 1 to 4 for "feeling of cleaning molars" and "feeling of discomfort with vibration". The evaluation results are shown in table 1 below.
In the evaluation test of "cleaning feeling of molar teeth", sensory evaluation was performed by 10 panelists, and the cleaning feeling of molar teeth (second large mortar ) was evaluated by the following criteria.
And 5, dividing: it is very easy to brush.
And 4, dividing: brushing was somewhat easier.
And 3, dividing: it is not difficult and not easy to brush.
And 2, dividing: it is somewhat difficult to brush.
1 minute: it is very difficult to brush.
Then, the average of the scores given by 10 professional judges was obtained, and evaluation was performed on the following 4 ranks.
◎ is 4.5 min or more and 5.0 min or less
○ is 3.5 min or more and less than 4.5 min
△ is 2.5 min or more and less than 3.5 min
× less than 2.5 min
In the evaluation test of "feeling of discomfort with vibration", 10 professional judges performed sensory evaluation, and the feeling of discomfort with vibration during brushing was evaluated by the following criteria.
And 5, dividing: there is no fear of vibration at all.
And 4, dividing: there is little concern about vibration.
And 3, dividing: neither is there any fear.
And 2, dividing: there is little concern about vibration.
1 minute: there is a great concern about vibration.
Then, the average of the scores of 10 professional judges was obtained, and evaluation was performed on the following 4 ranks.
◎ is 4.5 min or more and 5.0 min or less
○ is 3.5 min or more and less than 4.5 min
△ is 2.5 min or more and less than 3.5 min
× less than 2.5 min
From the evaluation results shown in table 1, it is found that: the electric toothbrushes of examples 1 to 12 both showed good results in the evaluation of "feeling of cleaning molars" and "feeling of discomfort with vibration" compared to the electric toothbrushes of comparative examples 1 to 4, and therefore, the overall evaluation gave good results.
The arrangement pattern of the implanted pores in the head was set according to the head width and the head length, but the same evaluation was obtained with any arrangement pattern.
Claims (7)
1. A replacement brush for an electric toothbrush, which is detachably mounted on a toothbrush main body including a grip part of the electric toothbrush, includes a neck part and a head part,
the electric toothbrush is provided with a handle part, a neck part extending from the front end of the handle part and a head part arranged at the front end of the neck part, generates vibration by electric driving and cleans the inside of the oral cavity by a plurality of hair bundles implanted on the hair implanting surface of the head part,
the maximum thickness T of the head part is 2-4 mm, the minimum thickness D of the neck part is 3-5 mm, and the relation that D is more than or equal to T is satisfied,
the head portion is provided on a back surface side of the head portion and the neck portion opposite to a front surface side on which the flocked surface is provided, the head portion being offset from the neck portion in a direction from the back surface side toward the front surface side.
2. The replacement brush for an electric toothbrush according to claim 1,
a step H is provided between the back of the head and the back of the neck,
the level difference H is 0.5 to 3 mm.
3. The replacement brush for an electric toothbrush according to claim 1 or 2,
the head portion is provided to be inclined in a direction from a back surface side toward a front surface side with respect to the neck portion,
an angle formed by an axis of the head portion parallel to the hair-planting surface and an axis of the neck portion parallel to a direction of attachment/detachment to/from the grip portion is 1 to 5 °.
4. The replacement brush for an electric toothbrush according to any one of claims 1 to 3,
the distance between the head portion front end and the support shaft front end is 40-60 mm under the state of being mounted on the front end of the support shaft protruding from the handle portion front end to the axial direction.
5. The replacement brush for an electric toothbrush according to any one of claims 1 to 4, wherein the head portion is offset from the neck portion in a direction from a back surface side toward a front surface side on a side where the bristle surface is provided, on a front surface side of the head portion and the neck portion.
6. The replacement brush for an electric toothbrush according to any one of claims 1 to 5, wherein a vibration suppressing portion is provided on a back surface side of the head portion and the neck portion so as to be partially connected from a front end of the neck portion toward a back surface of the head portion.
7. An electric toothbrush comprising a handle part, a neck part extending from a tip of the handle part, and a head part provided at a tip of the neck part, wherein the electric toothbrush is driven electrically to generate vibrations and simultaneously cleans an interior of an oral cavity by a plurality of tufts of bristles implanted on a bristle implanting surface of the head part,
the electric toothbrush has a structure in which a replacement brush including the neck portion and the head portion is detachably attached to a toothbrush main body including the handle portion,
the electric toothbrush is provided with the replacement brush for an electric toothbrush according to any one of claims 1 to 6 as the replacement brush.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-231177 | 2017-11-30 | ||
| JP2017231177 | 2017-11-30 | ||
| PCT/JP2018/043970 WO2019107489A1 (en) | 2017-11-30 | 2018-11-29 | Replacement brush for electric toothbrush, and electric toothbrush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111343944A true CN111343944A (en) | 2020-06-26 |
Family
ID=66665550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880072720.5A Pending CN111343944A (en) | 2017-11-30 | 2018-11-29 | Replacement brush for electric toothbrush and electric toothbrush |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP7270551B2 (en) |
| KR (1) | KR20200088274A (en) |
| CN (1) | CN111343944A (en) |
| SG (1) | SG11202004600XA (en) |
| TW (1) | TWI826404B (en) |
| WO (1) | WO2019107489A1 (en) |
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- 2018-11-29 KR KR1020207007325A patent/KR20200088274A/en not_active Application Discontinuation
- 2018-11-29 WO PCT/JP2018/043970 patent/WO2019107489A1/en active Application Filing
- 2018-11-29 CN CN201880072720.5A patent/CN111343944A/en active Pending
- 2018-11-29 TW TW107142748A patent/TWI826404B/en active
- 2018-11-29 JP JP2019557320A patent/JP7270551B2/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| TW201924622A (en) | 2019-07-01 |
| TWI826404B (en) | 2023-12-21 |
| WO2019107489A1 (en) | 2019-06-06 |
| SG11202004600XA (en) | 2020-06-29 |
| JPWO2019107489A1 (en) | 2020-11-26 |
| KR20200088274A (en) | 2020-07-22 |
| JP7270551B2 (en) | 2023-05-10 |
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