TWI527536B - Toothbrush - Google Patents

Description

toothbrush Technical field

The invention relates to a toothbrush.

The present application claims priority on Japanese Patent Application No. 2011-184568, the entire disclosure of which is incorporated herein by reference.

Background technique

When using a toothbrush to clean the inside of the mouth, the focus is on wiping the tissue with a moderate pressure on the subject. The pressure (brush pressure) applied to the target portion of the hair-planting portion was about 200 g.

Generally speaking, when cleaning the oral cavity, it is not easy to recognize the size of the brush, and it is often cleaned with excessive brush pressure or with too small brush pressure. If the brushing pressure is too small, it is difficult to remove the tartar of the tartar, especially the narrow portion such as the interdental portion or the tooth neck, and if the brushing pressure is too large, the tooth or the tooth may be damaged.

In response to this problem, there have been proposals for various toothbrushes that can ease brushing.

For example, there is a proposed toothbrush in which an integral bent portion is included between the handle portion and the head portion, the bent portion has a bending axis with respect to the long axis in the lateral direction, and an elastic material is penetrated at the curved mark (for example, Patent Literature) 1).

Further, another proposed toothbrush has a flexible connecting portion between the base end portion of the head portion and the neck portion (for example, Patent Document 2).

Or, another proposed toothbrush having an elastic soft structure located in the grip or between the head and the grip, the structure being capable of brushing the teeth The pressure applied by the portion is elastically bent, and the flexibility of the structure can be changed according to the adjustment mechanism (for example, Patent Document 3).

Advanced technical literature Patent literature

Patent Document 1: Japanese Patent Laid-Open Publication No. 2000-510711

Patent Document 2: Japanese Patent Laid-Open Publication No. 2001-504024

Patent Document 3: Japanese Patent Laid-Open Publication No. 2004-538029

Summary of invention

However, although the above technique can alleviate the brushing pressure, the user cannot recognize the brushing pressure, so that the brushing pressure cannot be achieved.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a toothbrush which can be easily recognized by a user and which is cleaned by a suitable brushing pressure.

In one aspect of the toothbrush of the present invention, a head portion and a grip portion extending from the head portion are included, and a hair bundle is implanted on one of the aforementioned head portions, and a protrusion portion is formed on the grip portion. And the surrounding portion protruding from the back side of the aforementioned hair-growing surface, the surrounding portion surrounding the protruding portion, and the protruding portion has a protruding end protruding in a shape protruding from the surrounding portion, and when the protruding end and the aforementioned grip are When the front end of the portion is held at a fixed position, and the aforementioned hair is thickened facing the head, the surrounding portion can be relatively displaced along the protruding end direction.

Moreover, it is preferable that the grip portion is formed to penetrate from the side of the hair-growing surface to the front The through hole on the back side, and the peripheral portion of the through hole forms the surrounding portion, and the protruding portion penetrates the through hole to form a portion of the protruding portion away from the surrounding portion.

That is, in one aspect of the toothbrush of the present invention, a head portion and a grip portion extending from the head portion are included, and a hair bundle is implanted on one of the hair portions of the head portion, and the grip portion is formed in the grip portion. a protruding portion and a surrounding portion protruding from a back side of the hair-engaging face side of the toothbrush, the surrounding portion surrounding the protruding portion, and the protruding portion having a protruding end protruding in a shape protruding from the surrounding portion, and when The protruding end and the front end side of the grip portion are held at a fixed position, and the surrounding portion is relatively displaceable in the direction of the protruding end when the aforementioned hair is thickened toward the head.

Further, the grip portion preferably has a through hole penetrating from the side of the flocking surface to the back side, and a peripheral portion of the through hole forms the surrounding portion, and the protruding portion penetrates the through hole to form a portion of the protruding portion Keep away from the aforementioned surrounding parts.

According to one aspect of the toothbrush of the present invention, since the grip portion and the head portion extending from the neck side of the grip portion are included, and a hair bundle is implanted on one of the aforementioned head portions, and The grip portion is formed with a protruding portion and a surrounding portion protruding from the back side of the aforementioned hair-planting surface, the surrounding portion surrounding the protruding portion, and the protruding portion is formed in a shape protruding from the surrounding portion, and When the protruding end and the front end side of the grip portion are held at a fixed position, and the front hair portion is relatively biased from the front end portion, the surrounding portion can be relatively displaced along the protruding end direction, so that the user can easily recognize the brush Press and clean the mouth with a proper brush press.

According to another aspect of the present invention, in the grip portion, a through hole penetrating from the side of the hair-growing surface to the back side is formed, and a peripheral portion of the through hole forms the surrounding portion, and the protruding portion penetrates the aforementioned The through hole forms a portion of the protruding portion away from the surrounding portion, so that the user can agilely recognize the increase and decrease of the brush pressure, and clean the inside of the oral cavity with a more appropriate brushing.

Simple illustration

Fig. 1A is a plan view showing a toothbrush according to an embodiment of the present invention.

Fig. 1B is a side view showing a toothbrush according to an embodiment of the present invention.

Figure 2 is a cross-sectional view taken along line II-II of Figure 1A.

Fig. 3 is a schematic view showing the use of the toothbrush of Figs. 1A and 1B.

Fig. 4 is a cross-sectional view showing a toothbrush according to an embodiment of the present invention.

Form for implementing the invention

Hereinafter, a toothbrush according to an embodiment of the present invention will be described with reference to the drawings.

The toothbrush 1 shown in FIGS. 1A and 1B includes a grip body and the grip body as a whole is elongated, and the grip body has a flat rectangular head 5; and the head 5 extends. Grip portion 2. The grip portion 2 has a handle portion 3; and a neck portion 4 formed between the handle portion 3 and the head portion 5. The so-called slightly rectangular shape includes the concept that the top is shaped like a straight line or a curved corner.

One surface of the head 5 is a hair-planting surface 52, and two or more hair-growing holes 54 are formed in the hair-planting surface 52. The hair-planting surface 52 is planted in the planting hole 54 and has two binding bundles. The above hair bundle is used to form the surface of the hair-planting part. The hair bundles are omitted in FIGS. 1A and 1B.

The other side of the head 5 is a tongue cleaner 56 formed with two or more small protrusions.

The shank 3 is gradually widened from the front end 7 toward the neck portion 4, and then narrowed and joined to the neck portion 4. The shank portion 3 has a through hole 16 formed in the neck portion 4 side, and a peripheral portion of the through hole 16 is a surrounding portion 10. In the present embodiment, the through hole 16 is formed in the portion where the shank portion 3 is the widest.

A protruding portion 20 is formed in the through hole 16, and the protruding portion 20 is slightly elliptical in a plane in which the length of the grip body is a diameter. The protruding portion 20 has a shape in which the surface 21 and the surface 22 protrude from the surrounding portion 10, the surface 21 is a surface in the same direction as the hair-planting surface 52 (first protruding surface), and the surface 22 is a surface on the back side of the hair-planting surface 52 (the first surface) Two protruding faces).

That is, the protruding portion 20 is formed by an elliptical column that penetrates the through hole 16. The projection 20 is connected to the handle 3 in the longitudinal direction of the grip body. As shown in Fig. 2, the projection 20 has its longitudinal side away from the surrounding portion 10. Further, irregularities for slip prevention are formed on the first protruding surface 21 and the second protruding surface 22.

In the shank portion 3, a slip preventing portion 34 is formed on the side of the neck portion 4 of the protruding portion 20, and a covering portion 32 is formed on the circumferential surface of the side surface and the front end portion 7. The anti-slip portion 34 is for preventing the finger abutting against the protruding portion 20 from accidentally sliding in the direction of the neck portion 4. The covering portion 32 prevents the finger of the grip handle 3 from slipping.

The second protruding surface 22 is a portion where the finger abuts when in use, and the protruding portion 20 can be bent and deformed according to the brushing strength when cleaning the oral cavity. When the user abuts against the back side surface (second surrounding surface) 12 of the surrounding portion 10 by the finger abutting the second protruding surface 22, the user feels that the brush pressure is appropriate. Also, the user is abutting the second prominent When the finger of the face 22 does not abut against the second surrounding surface 12, the body brush pressure is too small. Further, when the user touches the finger of the second projecting surface 22 into the through hole 16, the body brush pressure is excessively large. That is, the user can recognize whether the brush pressure is appropriate or not according to the contact between the finger abutting the second protruding surface 22 and the second surrounding surface 12.

Therefore, by combining the material and shape of the surrounding portion 10 with the material and shape of the protruding portion 20, the portion of the second protruding surface 22 that abuts the finger when applying the appropriate brushing becomes the second surrounding surface 12 Slightly equal to the height, so that the user can properly brush and clean the mouth. The term "slightly equivalent" means that a deviation of about -10 ° to 10 ° is allowed, and the deviation is preferably in the range of -5 ° to 5 °.

The surrounding portion 10 is made of a hard resin, and the crucible can accurately recognize the brush pressure. The hard resin can be determined in consideration of the rigidity and mechanical properties required for the toothbrush 1, and the like, for example, those having a bending strength of more than 3,000 N/cm ² are preferably exemplified by a bending strength of 4,000 to 15,000 N/cm ² . Such a hard resin may, for example, be polypropylene (PP), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), or polybutylene terephthalate (PCT). , polyacetal (POM), polystyrene (PS), acrylonitrile butadiene styrene (ABS), cellulose propionate (CP), polyaryl ester, polycarbonate, acrylonitrile-styrene copolymerization Resin (AS), etc., especially PBT is better. The above-mentioned examples can be used singly or in combination of two or more kinds as appropriate.

The material of the protruding portion 20 may be a soft resin which can be deformed by a finger pressing force, and the Shore hardness is preferably 90 or less, and more preferably in the range of 10 to 40. The soft resin may, for example, be an elastomer resin such as a polyolefin elastomer, a styrene elastomer, a polyester elastomer or a polyurethane elastomer, or the like.

The length L1 of the protruding portion 20 is not particularly limited, and is, for example, about 15 to 40 mm.

The thickness T1 of the protruding portion 20, that is, the distance between the first protruding surface 21 and the second protruding surface 22 is not particularly limited, and is, for example, about 5 to 15 mm.

The width W1 of the protruding portion 20 is not particularly limited, and is, for example, about 5 to 15 mm. The maximum width W2 of the portion of the grip portion 3 that forms the surrounding portion 10 can be determined in consideration of the operability and strength of the toothbrush 1, and the like, for example, the lower limit value is preferably 10 mm or more, and more preferably 13 mm or more. The upper limit is preferably 20 mm or less, more preferably 17 mm or less. The upper and lower limits can be combined as appropriate. More specifically, it is preferably 10 to 20 mm, more preferably 13 to 17 mm.

The maximum thickness T2 of the portion of the grip portion 3 that forms the surrounding portion 10 can be determined in consideration of the operability and strength of the toothbrush 1, and the like, for example, preferably 3 to 12 mm, more preferably 5 to 8 mm.

The difference t1 between the first projecting surface 21 and the surface (first surrounding surface) 11 of the surrounding portion 10 in the same direction as the hair-planting surface 52 is not particularly limited, and is, for example, about 0 to 3 mm.

The difference t2 between the second protruding surface 22 and the second surrounding surface 12 is such that when the brushing pressure is 150 to 400 g, especially 150 to 250 g, the finger abutting the second protruding surface 22 and the second surrounding surface 12 The length of the abutment. The difference t2 is determined if the second protruding surface 22 protrudes from the second surrounding surface 12 (ie, the protruding portion 20 protrudes from the surrounding portion 10), and may be determined in consideration of the material of the protruding portion 20, etc., for example, the lower limit is 0.5 mm. The above is better, especially 1mm or more. The upper limit is preferably 3 mm or less, and more preferably 2 mm or less. The upper and lower limits can be combined as appropriate. More specifically, it is preferably 0.5 to 3 mm, more preferably 1 to 2 mm.

Brushing refers to the force that presses the teeth as a whole when the hair follicles are placed on the teeth.

The distance dl between the side surface of the protruding portion 20 and the inner surface of the through hole 16 is not particularly limited, and is, for example, about 0.1 to 2 mm.

The material of the tongue cleaner 56 is the same as that of the protrusion 20.

The material of the covering portion 32 is the same as the material of the protruding portion 20.

The material of the anti-slip portion 34 is the same as the material of the protruding portion 20.

The number of the planting holes 54 is not particularly limited, and is, for example, about 20 to 80.

As the person who uses the hair, for example, the hair (cone hair) whose neck diameter is gradually reduced toward the hair tip, and the hairs (straight hair), cone hair or straight hair having substantially the same outer diameter except for the round portion of the hair removal tip. The difference between the Maojian differences and so on.

The material of the hair is exemplified by polyamines such as 6-12 nylon and 6-10 nylon; PET, polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), polynaphthalene Polyester such as polyethylene dicarboxylate (PEN) or polybutylene naphthalate (PBN); a polyolefin such as PP, an olefin-based elastomer, a styrene-based elastomer or the like (elastomer).

The toothbrush 1 is manufactured in accordance with a conventional two-color molding method.

For example, the hard resin is injected in one mold, and the grip core is formed to include the head portion 5, the neck portion 4, and the shank portion 3 formed with the through hole 16. Next, the grip core is placed in the secondary mold to eject the soft resin, and the grip core is formed into the tongue cleaner 56, the covering portion 32, the anti-slip portion 34, and the protruding portion 20 to obtain the grip body.

Then, a hair bundle is planted on the hair surface of the obtained grip body to obtain a toothbrush. 1. The method of planting the tufts is exemplified by folding the tufts in half and inserting the flat line sandwiched therebetween into the planting holes 54, so as to plant the tufts of the tufts; the lower end of the tufts is pressed and fixed. A heat fusion method in a molten resin as a hair-planting portion; an in-mold forming method in which a lower portion of the hair bundle is heated to form a molten block, a molten resin is injected into a mold to form a hair-planting portion, and the like.

Next, the method of using the toothbrush 1 will be described using FIG.

Fig. 3 is a schematic view showing a state in which the user holds the toothbrush 1 in a so-called grasping method in which the thumb abuts against the second projecting surface 22, and the other fingers grasp the handle portion 3 with the hand.

When the toothbrush 1 is held by the mastering method and the hair-planting portion (not shown) is abutted against the tooth, the stress 60 from the tooth is applied to the hair-planting surface 52 corresponding to the pressure of the abutment, that is, the brushing pressure. The brushing pressure is mainly increased or decreased by the force of pressing the thumb of the second projecting surface 22. Therefore, when the brush pressure is increased, the protruding portion 20 is deflected so that the first protruding surface 21 bulges in the same direction as the hair-planting surface 52. That is, when the second projecting surface 22 of the protruding end of the protruding portion 20 and the front end 7 side of the grip portion 2 are held at a fixed position, and the head portion 5 is weighted from the flocking surface 52, the surrounding portion 10 is along the second protruding surface. 22 relative displacement. When the pressing force of the thumb reaches the self-applying pressure, the thumb abuts the second surrounding surface 12, and the user of the toothbrush 1 can recognize that the brush pressure has reached the self-applied pressure.

According to this embodiment, since the protruding portion is formed in the grip portion, the user can recognize the brushing pressure and clean the inside of the oral cavity with appropriate brushing by a simple operation of the user abutting the protruding portion by the finger.

Further, in the toothbrush according to the embodiment, since the protruding portion is formed in the through hole formed in the grip portion, the through hole is formed and the grip portion is long and gripped. The joints are connected, so that the protruding portions can be flexed and restored smoothly according to the degree of finger pressing. Therefore, the user can quickly recognize the increase and decrease of the brush pressure, and clean the inside of the mouth with appropriate brushing.

The present invention is not limited to the foregoing embodiment.

In the above embodiment, the long side of the protruding portion is away from the surrounding portion. However, the present invention is not limited thereto, and the side surface of the protruding portion may be connected to the surrounding portion.

An example in which the side surface of the protruding portion is connected to the surrounding portion will be described using FIG. Fig. 4 is a cross-sectional view of the same position as Fig. 2. In the toothbrush 100 of FIG. 4, a coupling portion 110 is formed on a side surface of the protruding portion 20, and the coupling portion 110 is connected to the surrounding portion 10 in the through hole 16. The connecting portion 110 may be a ridge extending in the circumferential direction of the protruding portion 20, or may be a film or two or more protruding portions formed intermittently. Since the joint portion 110 is formed, it is easy to manufacture a molding die of the grip body, and the durability of the grip body can be improved.

However, in consideration of the desire to make the deformation of the protruding portion smoother, it is preferable not to form the joint portion.

In the above embodiment, the protruding portion protrudes in the same direction and the back side as the hair-planting surface. However, the present invention is not limited thereto, and the protruding portion may have a shape protruding toward the surrounding portion toward the back side of the hair-planting surface.

In the above embodiment, the protruding portion is slightly elliptical in plan view, but the present invention is not limited thereto, and the planar viewing shape of the protruding portion may be a slightly polygonal shape such as a true circular shape, a slightly triangular shape, a slightly rectangular shape, a slightly pentagon shape or the like. The so-called slightly polygonal shape includes the concept that the top is shaped like a straight line or a curved corner.

In the above embodiment, the surrounding portion is composed only of a hard resin. However, the present invention is not limited thereto, and the surrounding portion may be covered with a soft resin.

In the above embodiment, the tongue cleaner is formed on the head, but the present invention is not limited thereto, and the tongue cleaner may not be formed.

In the above embodiment, the anti-slip portion is formed in the shank portion. However, the present invention is not limited thereto, and the anti-slip portion may not be formed.

In the above embodiment, the covering portion is formed on the shank portion. However, the present invention is not limited thereto, and the covering portion may not be formed.

In the above embodiment, the description is given to grasping the toothbrush by the mastering method.

Shape, but it is also suitable for holding the toothbrush with a pen. For example, when the toothbrush is held by the pen holding method, the second protruding surface is abutted by the middle finger or the index finger, and the user can appropriately brush and clean the inside of the oral cavity.

Industrial availability

According to one aspect of the toothbrush of the present invention, since the grip portion and the head portion extending from the neck side of the grip portion are included, and a hair bundle is implanted on one of the aforementioned head portions, and The grip portion is formed with a protruding portion and a surrounding portion protruding from the back side of the aforementioned hair-planting surface, the surrounding portion surrounding the protruding portion, and the protruding portion is formed in a shape protruding from the surrounding portion, and When the protruding end and the front end side of the grip portion are held at a fixed position, and the front hair portion is relatively biased from the protruding end, the user can easily recognize the brush pressure and It is extremely useful in the industry because it is suitable for brushing and cleaning the mouth.

According to another aspect of the present invention, in the grip portion, a through hole penetrating from the side of the hair-growing surface to the back side is formed, and a peripheral portion of the through hole forms the surrounding portion, and the protruding portion Passing through the through hole to form a portion of the protruding portion away from the surrounding portion, so use It is extremely useful in the industry because it can quickly recognize the increase and decrease of brush pressure and clean the mouth with a more appropriate brushing pressure.

1,100‧‧‧ toothbrush

2‧‧‧ grip part

3‧‧‧ handle

4‧‧‧ neck

5‧‧‧ head

7‧‧‧ front end

10‧‧‧ Surrounding

11‧‧‧ first surrounding

12‧‧‧Second surrounding

16‧‧‧through holes

20‧‧‧Protruding

21‧‧‧First prominent surface

22‧‧‧second protruding surface

32‧‧‧The Ministry of Coverage

34‧‧‧Slip-stop

52‧‧‧Flocking surface

54‧‧‧Planting pores

56‧‧ ‧ tongue cleaner

60‧‧‧ stress

110‧‧‧Connecting Department

T1, t2‧‧ ‧ poor

L1‧‧‧ length

T1, T2‧‧‧ thickness

W1, W2‧‧‧ width

Fig. 1A is a plan view showing a toothbrush according to an embodiment of the present invention.

Fig. 1B is a side view showing a toothbrush according to an embodiment of the present invention.

Figure 2 is a cross-sectional view taken along line II-II of Figure 1A.

Fig. 3 is a schematic view showing the use of the toothbrush of Figs. 1A and 1B.

Fig. 4 is a cross-sectional view showing a toothbrush according to an embodiment of the present invention.

1‧‧‧ toothbrush

2‧‧‧ grip part

3‧‧‧ handle

4‧‧‧ neck

5‧‧‧ head

7‧‧‧ front end

10‧‧‧ Surrounding

16‧‧‧through holes

20‧‧‧Protruding

32‧‧‧The Ministry of Coverage

34‧‧‧Slip-stop

52‧‧‧Flocking surface

54‧‧‧Planting pores

Claims (1)

A toothbrush comprising a head portion and a grip portion extending from the head portion, wherein a hair bundle is implanted on the hair-planting surface of the head portion, and a protrusion portion, a through hole and a surrounding portion are formed in the grip portion The protruding portion protrudes from the back side of the hair-growing surface side of the toothbrush, and the through-hole penetrates from the side of the hair-growing surface to the back side, the surrounding portion surrounds the protruding portion at a peripheral portion of the through-hole, and the protruding portion penetrates the foregoing a through hole having a protruding end protruding from the surrounding portion, wherein the protruding portion is connected to the grip portion in a longitudinal direction of the grip portion, and a side surface of the protruding leading side is away from the surrounding portion, the surrounding portion When the protruding end and the front end side of the grip portion are held at a fixed position, and the hair is raised toward the front portion, the protruding end can be relatively displaced in the protruding end direction.