JP2011078556A - Toothbrush - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toothbrush with excellent handleability, which enables a person with partial disability, such as a person with weak grip or a person with trouble in bending a finger to clean the inside of an oral cavity by himself/herself, and is the toothbrush enabling the brushing of upper teeth and lower teeth with the same feeling. <P>SOLUTION: The toothbrush includes: a head part 2 disposed on the end side and provided with a brush surface 2a where a bristle group 21 is flocked; a neck part 3 connecting the head part 2 and a handle part 4; an insertion hole 43 disposed in the back of the neck part 3 for inserting a plurality of fingers; and a holding part formed on the outer periphery of the insertion hole 43. The holding part includes a first holding part 41 formed in the same direction as the brush surface 2a, and a second holding part 42 formed at a position facing the first holding part 41 holding the insertion hole 43 in-between. Further, the neck part 3, the first holding part 41 and the second holding part 42 are disposed roughly in parallel with each other, and the neck part 3 is positioned at the center of the first holding part 41 and the second holding part 42. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a toothbrush used for cleaning the oral cavity.

  A general toothbrush has a head with a brush surface arranged on the tip side and in which hair bundles are implanted, a neck that connects the head and the handle, and a rod shape that is arranged behind the neck It consists of a (straight shape) handle. The user of a toothbrush uses a part of the straight handle as a gripping part, and grips the straight gripping part with one hand to clean the oral cavity such as toothpaste. May occur. That is, the user may not necessarily be a healthy person (healthy child), and when the grip strength is weak or when bending of some fingers is inconvenient, hold the straight gripping part with one hand. It is difficult to brush your teeth. For this reason, toothbrushes that have a gripping part that can be cleaned in the oral cavity by themselves are studied even for people with weak body force, people with inflexible finger bending, etc. ing. In addition to facilitating gripping with one hand, a pattern with a shape different from the straight pattern has been studied for decorative implications.

Japanese Patent Laid-Open No. 10-14659 Utility Model Registration No. 3133345 Full text of Japanese Utility Model Publication No. 47-9672 Japanese Utility Model Publication No. 63-166041

  Patent Document 1 discloses a toothbrush in which arch-shaped gripping auxiliary members are provided on both sides of a handle gripping portion. Although the usage method of the toothbrush described in Patent Document 1 is not specified, it is assumed that one or both of the arcuate gripping auxiliary members are caught by the hand when the user grips the gripping portion. It is thought that there is. That is, gripping the straight-shaped gripping part is the same as in the prior art, but the above-mentioned bow-shaped gripping auxiliary member is hooked on the hand to prevent it from falling out of the hand. The toothbrush described in Patent Document 1 is arranged so that the brush surface on which the hair bundle group is arranged and the arch-shaped holding auxiliary member are orthogonal to each other on the distal end side.

  Patent Document 2 discloses a toothbrush having a ring portion in the middle of a handle. This toothbrush grips the grip portion with three fingers, and one finger is inserted through the ring portion, and the head portion 11 is provided at an angle of about 30 degrees with respect to the ring portion.

  Patent Document 3 discloses a toothbrush having a spherical grip after a handle. The spherical gripping portion is a spherical shape having a diameter about twice the length of the brush surface on which the hair bundle group is planted and arranged on the distal end side, and the outer peripheral surface of the spherical gripping portion is held by a palm. Used to hold. The reason is that it is easy to correct the inclination and angle of the brush according to the location to be polished because the spherical shape has the same gripping method regardless of the corner from which the palm is gripped.

  Patent Document 4 discloses a toothbrush in which an auxiliary handle is formed from the end of the handle body of the handle toward the flocked portion. The tip of this auxiliary handle is arranged at a position away from the handle (not connected to the handle), and is a U-shaped gripping portion. In use, a finger is inserted into a gap between the auxiliary handle and the handle main body to grip the handle main body or the auxiliary handle, or the handle main body and the auxiliary handle are both held in the palm and held. The toothbrush described in Patent Document 4 is arranged so that the brush surface arranged on the distal end side and having the hair bundle group implanted therein and the U-shaped gripping portion are orthogonal to each other.

  By the way, for people with weak grip and those who are unable to bend their fingers, the problem with brushing teeth is that when the toothbrush handle is changed between the upper and lower teeth, The problem of dropping is that there is no toothbrush that can brush the upper and lower teeth with the same feeling (distance and same force). For people who have difficulty with their hands, even if they first brush either the upper teeth or the lower teeth, if these vertical positions change, they may not be able to grip and brush with the same feeling. There were many. In this specification, it is assumed that a person with weak grip strength, a person with difficulty in bending a finger, and the like includes a person with a hand inability and a person who can brush his teeth only with his feet.

However, none of the above Patent Documents 1 to 4 considers this. Moreover, the toothbrush described in Patent Document 1 is similar to the conventional method for gripping a straight-shaped gripping part, and brushes teeth while changing the direction and angle of the toothbrush at the time of brushing, depending on the direction and angle of the toothbrush. The arcuate gripping auxiliary member may become an obstacle. In addition, there is a risk of dropping when changing. Since the toothbrush described in Patent Document 2 grips the grip portion with three fingers, it is difficult to use unless the hand is somewhat dexterous, and lacks stability during use. Since the toothbrush described in Patent Document 3 is used so that the outer peripheral surface of the spherical gripping part is gripped by a palm, it is less convenient than a normal toothbrush. In addition, the toothbrush described in Patent Document 4 is such that the tip of the auxiliary handle is not connected to the handle, the position becomes unstable, and the strength is weak. Moreover, since the toothbrush of patent document 3 is used so that the outer peripheral surface of the said spherical shaped holding part may be grasped with a palm, it is a usability worse than a normal toothbrush. In other words, conventional toothbrushes are not easy to use and people with weak body strength, people with inflexible finger bending, etc., can perform oral cleaning by themselves. There is no actual situation.
In addition, the toothbrushes described in Patent Documents 1 and 4 are arranged so that the brush surface arranged on the tip side and the hair bundle group is implanted and the ring part are orthogonal to each other, and the toothbrush described in Patent Document 2 is Since the brush part is at an angle of 30 degrees, you can brush your teeth if you do not twist your wrist a lot, or you can brush your teeth only at a specific angle, and you cannot firmly brush both the upper and lower teeth. Is expected.

  Therefore, the present invention is an easy-to-use toothbrush that can clean the oral cavity by itself even for people who have a weak body part, such as a person with weak grip and a person who has difficulty bending a finger, An object of the present invention is to provide a toothbrush capable of brushing upper and lower teeth with the same feeling.

  The toothbrush of the present invention includes a head having a brush surface arranged on the distal end side and having a hair bundle group implanted therein, a neck connecting the head and the handle, and a plurality of parts arranged behind the neck. A first gripping part having an insertion hole for inserting a finger and an annular handle formed of a gripping part formed on the outer periphery of the insertion hole, the gripping part being formed in the same direction as the brush surface; It is characterized by comprising a second gripping part formed at a position facing the first gripping part across the insertion hole.

  According to the present invention, the user cleans the oral cavity by inserting a plurality of fingers into the insertion hole formed in the annular handle and holding the first holding part or the second holding part. It will be. The first gripping part is formed in the same direction as the brush surface, and the second gripping part is formed at a position facing the first gripping part with the insertion hole interposed therebetween. When cleaning, it is only necessary to select whether to hold the first gripping part or the second gripping part depending on the position of the teeth, and it is possible to brush the tooth without twisting the wrist. . Then, when a plurality of fingers are inserted through the insertion hole and the first gripping part or the second gripping part is gripped by the plurality of fingers so as to be inside the hand, the second side opposite to the outer side (back side) of the hand It is easy to hold a toothbrush even if a person with weak grip strength or a person with difficulty in bending a finger is in contact with the grip part or the first grip part, and the direction of the brush surface and teeth is easy to match . Even if the fingertip is separated from the grip portion, it is prevented from dropping from the hand because a plurality of fingers are inserted through the insertion hole.

As the present invention, the neck, the first gripping portion, and the second gripping portion are arranged substantially in parallel, and the neck portion is positioned at the center of the first gripping portion and the second gripping portion. Is preferred.
According to the present invention, whether to grip the first gripping part or the second gripping part is selected according to the position of the tooth. For example, the brushing of the upper tooth and the brushing of the lower tooth The first and second gripping portions can be switched and used. In this case as well, the neck portion serves as the central axis, so even if it is rotated up and down, it can be used without feeling discomfort in the sense of position and distance to the teeth.

According to the present invention, a concave curved surface for applying a thumb when gripping the gripping portion is provided at both the root of the first gripping portion and the neck and the base of the second gripping portion and the neck. Preferably it is formed.
According to the present invention, the user inserts a plurality of fingers excluding the thumb into the insertion hole formed in the annular handle, holds the first holding part or the second holding part, and In the state where the thumb is applied to either the concave curved surface formed at the base of the first gripping portion and the neck portion or the concave curved surface formed at the base of the second gripping portion and the neck portion, The inside will be cleaned. By holding the thumb on the concave curved surface formed at the base of the grip portion (first grip portion or second grip portion) and the neck, the toothbrush head can be firmly gripped without wobbling. Easy.

  In the present invention, it is preferable that the width of the second gripping portion of the gripping portions is set slightly smaller than the width of the first gripping portion. When first grasping the main grip and gripping the first grip (when brushing the lower teeth), in order to grip the first grip after inserting a plurality of fingers through the insertion hole, The width of the first gripping part is preferably large enough to contact the base of the finger. From this state, when gripping the second gripping portion (when brushing the upper teeth), the second gripping portion is covered with a palm so that a plurality of fingers are inserted through the insertion hole. The width of the gripping portion is preferably large enough to allow a plurality of fingers to be inserted with a sufficient length. Therefore, the width of the second gripping portion of the gripping portion is set slightly smaller than the width of the first gripping portion.

  In the present invention, the inner surface of the first gripping part is disposed substantially parallel to the brush surface, and the inner surface of the second gripping part is disposed substantially parallel to the brush surface. Is preferred. According to the present invention, when gripping the first gripping portion, it is easy to hold the root portions of a plurality of fingers excluding the thumb along the inner surface of the first gripping portion, and the direction of the brush surface and teeth is also Easy to match. Further, when gripping the second gripping portion, it is easy to hold the joint portions of a plurality of fingers excluding the thumb along the inner surface of the second gripping portion, and the brush surface and the teeth are easily aligned.

  In the present invention, it is preferable that a recess having a size capable of hooking at least a little finger is provided on the rear end side of the grip portion.

  For example, in the case of a person with a large hand, it may be difficult to insert all the fingers (four fingers) except the thumb into the insertion hole, but according to the present invention, it is provided on the rear end side of the gripping portion. In addition, it is easy to stably hold the finger by hooking the little finger on the recess having a predetermined size. In addition, the user pushes the toothbrush in the distal direction by placing a little finger or the like along a concave portion provided on the rear end side of the gripping part according to the situation or preference (and may also place a ring finger). It can be used as an auxiliary when moving to a comfortable position, or it can be used as a place for placing a little finger. In other words, various hooking methods (gripping methods) are possible for people with weak gripping force, people with difficulty in bending their fingers, and the like.

  According to the toothbrush of the present invention, the user inserts a plurality of fingers into the insertion hole formed in the annular handle portion, grips the first grip portion among the grip portions, and brushes the upper teeth. Or by brushing the lower tooth by gripping the second gripping part of the gripping part, or by changing the gripping part according to the user's preference or convenience, and aligning the direction of the brush surface and teeth Cheap. Also, since the gripping part is gripped by inserting a plurality of fingers through the insertion hole formed in the annular handle part, even a person with weak gripping force or a person with difficulty in bending the finger should have a toothbrush. Is easy. And even if a fingertip leaves | separates from the said holding | grip part, since several fingers are penetrated by the said insertion hole, it is prevented that it falls from a hand. Further, since the neck portion provided with the brush surface on the tip side is located at the center of the first grip portion and the second grip portion, even if the handle portion is changed, the teeth and the hair bundle group Brushing with the same force while keeping the distance constant. Furthermore, the user assists when moving the toothbrush so as to push the toothbrush in the distal direction by placing a little finger or the like along a concave portion of a predetermined size provided on the rear end side of the grip portion according to the situation and preference. And can be used as a place for placing a little finger. According to the present invention, an easy-to-use toothbrush that can clean the inside of the oral cavity by itself is realized even for an elderly person with weak grip strength or a person with a partially disabled body.

It is a top view of the toothbrush of 1st Embodiment to which this invention is applied. It is a front view of the toothbrush of the said embodiment. It is a rear view of the toothbrush of the said embodiment. It is a side view of the toothbrush of the said embodiment, Fig.4 (a) is a left view, FIG.4 (b) is a right view. It is sectional drawing which looked at the toothbrush of the said embodiment from the plane side. It is a figure which illustrates the state which grasped the 1st grasping part of the toothbrush of the above-mentioned embodiment. It is a figure which illustrates the state which grasped the 1st grasping part of the toothbrush of the above-mentioned embodiment. It is a figure which illustrates the state which grasped the 2nd grasping part of the toothbrush of the above-mentioned embodiment. It is a figure which illustrates the state which grasped the 2nd grasping part of the toothbrush of the above-mentioned embodiment. It is a top view of the toothbrush of 2nd Embodiment to which this invention is applied. It is a side view of the toothbrush of the said embodiment, Fig.11 (a) is a left view, FIG.11 (b) is a right view. It is a top view of the toothbrush of 3rd Embodiment to which this invention is applied. It is a top view which shows the state which removed the neck and the head from the handle | pattern part of the toothbrush of the said embodiment. It is a top view which shows the state which accommodated the neck and the head in the handle | pattern part of the toothbrush of the said embodiment.

(First embodiment)
The toothbrush of 1st Embodiment to which this invention is applied is shown in FIGS. Here, FIG. 1 is a plan view of the toothbrush 1 of the present embodiment, FIG. 2 is a front view thereof, FIG. 3 is a rear view thereof, and FIG. 4 (a) is a left side view thereof. 4 (b) is a right side view thereof, and FIG. 5 is a cross-sectional view of the toothbrush 1 viewed from the plane side.
The toothbrush 1 of this embodiment is arranged on the distal end side, a head 2 having a brush surface 2a on which a hair bundle group 21 is planted, a neck 3 integrally formed after the head 2, and a back of the neck 3 The handle portion 4 is integrally formed (FIG. 1). The head 2, the neck 3 and the handle 4 are made of plastic such as polypropylene or ABS resin (acrylonitrile-butadiene-styrene), and are integrally molded by a mold or the like. The material of the head 2, the neck 3 and the handle 4 may be made of wood or light metal in addition to the plastic. The head 2 has a substantially rounded quadrilateral shape when viewed from the front, and a hair bundle group 21 such as nylon or pig hair is planted on the brush surface 2a. The neck 3 connects the head 2 and the handle 4, and the neck 3 formed to be narrower than the head 2 extends in a rod shape and is connected to the handle 4. It is located at the center between the first grip 41 and the second grip 42 (FIG. 1).

  The handle portion 4 of the toothbrush 1 of the present embodiment has a substantially elliptical shape in plan view, and has a substantially rounded rectangular insertion hole 43 in the center of the handle portion 4 (FIG. 1). . In addition, the handle 4 has a bar shape that swells near the center when viewed from the front (FIG. 2), and a bar shape that swells near the center when viewed from the back (FIG. 3). The annular handle 4 includes an insertion hole 43 and a first grip part 41 and a second grip part 42 formed on the outer periphery of the insertion hole 43. The first grip 41 is formed in the same direction as the brush surface 2a on which the hair bundle group 21 is implanted, and the second grip 41 is formed in the same direction as the back surface 2b of the head 2 ( FIG. 1). That is, the second grip portion 42 is formed at a position facing the first grip portion 41 with the insertion hole 43 interposed therebetween. The reason why the first gripping portion 41 is formed in the same direction as the brush surface 2a on which the hair bundle group 21 is implanted is that it is difficult for the person (hand) to be handicapped to specify the main gripping method. This is because it is preferable. The size of the annular handle 4 is set to a size that fits in the palm. This is because the palm can be easily sized to hold the annular handle 4 of the toothbrush 1. The length obtained by adding the head 2 and the neck 3 is set to be smaller than the length of the annular handle 4 and larger than the half of the length of the annular handle 4. This is to make the length necessary for cleaning in the oral cavity and easy to operate.

In the handle portion 4 of the toothbrush 1 of the present embodiment, the inner side surface 41b of the first grip portion 41 and the back surface 2b of the head portion 2 are arranged substantially in parallel. The side surface 42a and the brush surface 2a are disposed substantially in parallel, and the brush surface 2a and the back surface 2b of the head 2 are disposed substantially in parallel (FIG. 1). That is, the inner side surface 41b of the first holding part 41 is arranged substantially parallel to the brush surface 2a, and the inner side surface 42a of the second holding part 42 is arranged substantially parallel to the brush surface 2a. Will be. When the first grasping portion 41 or the second grasping portion 42 is grasped so that the interval between the first grasping portion 41 and the second grasping portion 42 is inside the hand with a plurality of fingers, Since the outer side (the back side) hits the opposite second gripping portion 42 or the first gripping portion 41, an interval for contacting (hooking) the hand on the annular handle portion is obtained.
According to the present embodiment, when gripping the first gripping portion 41, the base portions of a plurality of fingers excluding the thumb can be easily held along the inner side surface 41b of the first gripping portion 41, and the brush surface 2a It is easy to match the direction of the teeth. Further, when gripping the second grip portion 42, it is easy to hold the joint portions of a plurality of fingers excluding the thumb along the inner surface 42a of the second grip portion 42, and the direction of the brush surface 2a and the teeth is also easy. Easy to match.
Further, the neck 3 has a first grip 41 and a second grip 42 arranged substantially in parallel. The neck 3 is located at the center of the first grip 41 and the second grip 42. For people who are handicapped, etc., even if the upper teeth and lower teeth are brushed first, if the upper and lower positions change, the upper and lower teeth cannot be brushed with the same sensation. It is taken into account. Here, in this Embodiment, although the 1st holding part 41 is formed in the same direction as the brush surface 2a in which the hair | bristle bundle group 21 is planted, the hair | bristle bundle of the neck part 3 planted by the brush surface 2a The group 21 is further away from the second gripping portion 42 side toward the first gripping portion 41 side. However, since the hair bundle group 21 is flexible, it is important that the group 21 is at the center. The neck 3 is provided with a brush surface. The hair bundle group 21 can be provided up and down not only toward the first grip 41 but also toward the second grip 42.

In the handle portion 4 of the toothbrush 1 of the present embodiment, the rear side of the first grip portion 41 and the rear side of the second grip portion 42 are connected by a connection portion 44, and thereby the handle portion 4. Is a ring shape. In this embodiment, the outer side surface 44c of the connection part 44 is formed in the arch shape toward the rear-end side of the toothbrush 1 (FIG. 1). For example, when the user grips the toothbrush 1, it is assumed that the grip strength cannot be sufficiently controlled. Since the rear end of the second gripping portion 42 is connected, the first gripping portion 41 and the second gripping portion 42 are not too close or too far apart, and the toothbrush 1 as a whole is mechanical. Increases the strength.
The rear side of the first gripping part 41 extends from the outer surface 44 c of the connection part 44 to form an extension part 411, and the rear side of the second gripping part 42 is connected to the connection part 44. An extended portion 421 is formed so as to extend from the outer side surface 44c (FIG. 1). Therefore, the outer surface 44c of the connecting portion 44, the extending portion 411, and the extending portion 421 form a recess, and a space 5 is formed on the rear end side of the grip portions 41, 42 (FIG. 1). The recess has a size that allows at least a little finger to be hooked.

  In the present embodiment, the side surface of the first grip portion 41, the side surface of the second grip portion 42, the side surface 44c of the recess, and the like are chamfered (FIG. 1). The chamfered shape is an R chamfer. According to this embodiment, since there is no sharp corner, it becomes easy to grasp.

  In the present embodiment, a concave curved surface 31 is formed on the outer side surface of the base where the first grip 41 and the neck 3 are connected, and the second grip 42 and the neck 3 are connected. A concave curved surface 32 is formed on the outer side surface of the root (FIG. 1). The concave curved surface 31 is a concave curved surface for applying a thumb when gripping the first gripping portion 41, and the concave curved surface 32 is a concave for applying the thumb when gripping the second gripping portion 42. It is a curved surface.

The state which hold | gripped the 1st holding part 41 of the toothbrush 1 of this embodiment is illustrated in FIG. 6 and FIG. Moreover, the state which hold | gripped the 2nd holding part 42 of the toothbrush 1 of this embodiment is illustrated in FIG. 8 and FIG.
According to the present embodiment, for example, the user inserts the index finger, the middle finger, the ring finger, and the little finger into the insertion hole 43 formed in the annular handle portion 4, and holds the first holding portion 41, The oral cavity is cleaned in a state where the thumb is applied to the concave curved surface 31 formed at the base of the first grip 41 and the neck 3 (FIG. 6). For example, the user inserts the index finger, the middle finger, the ring finger, and the little finger through the insertion hole 43 formed in the annular handle portion 4, holds the second holding portion 42, and moves the second holding portion 42. The oral cavity is cleaned with a thumb placed on the concave curved surface 32 formed at the base of the neck 3 (FIG. 8). Thus, the head of the toothbrush 1 can be obtained by placing the thumb on the concave curved surface 31 (or concave curved surface 32) formed at the base between the first gripping portion 41 (or the second gripping portion 42) and the neck portion 3. It is easy to grip firmly without wobbling the part.
For example, in the case of a person with a large hand, it may be difficult to insert all the fingers (four fingers) except the thumb into the insertion hole 43. In this case, for example, the user inserts the index finger, the middle finger, and the ring finger into the insertion hole 43 formed in the annular handle portion 4, holds the first holding portion 41, and holds the holding portion 41, 42 by hooking a little finger on a concave portion (a concave portion formed by the outer surface 44c of the connecting portion 44, the extended portion 411, and the extended portion 421) provided on the rear end side of the first portion 42. In the state where the thumb is applied to the concave curved surface 31 formed at the base of the grip portion 41 and the neck portion 3, the oral cavity is cleaned (FIG. 7). For example, the user inserts the index finger, the middle finger, and the ring finger into the insertion hole 43 formed in the annular handle portion 4, grips the second grip portion 42, and rear ends of the grip portions 41, 42. Cleaning the oral cavity in a state where a little finger is hooked into a concave portion of a predetermined size provided on the side, and the thumb is applied to the concave curved surface 32 formed at the base of the second grip portion 42 and the neck portion 3 (FIG. 9). As described above, it is easy to stably hold a little finger by hooking a little finger on a concave portion of a predetermined size provided on the rear end side of the grip portions 41 and 42. In addition, the user places the toothbrush 1 in the distal direction by placing a little finger or the like (the little finger, or little finger and ring finger) in the recess provided on the rear end side of the gripping portions 41 and 42 according to the situation and preference. It can be used as an aid when moving like pressing, or it can be used as a place for placing a little finger.

  In the present embodiment, among the gripping portions 41 and 42, the width 42w of the second gripping portion 42 is set slightly smaller than the width 41w of the first gripping portion 41 (FIG. 5). More specifically, the width 41w of the first grip 41 is set in the range of 5 mm to 30 mm, the width 42w of the second grip 42 is set in the range of 4 mm to 29 mm, and the second grip 42 Is set to be 1 mm to 20 mm smaller than the width 41 w of the first grip 41. This is due to the following reason. First, when grasping the first grasping portion 41, the first grasping portion 41 has a width 41w so that a plurality of fingers are inserted into the insertion hole 43 and then the first grasping portion 41 is grasped. A size that contacts the root is preferable. When gripping the second gripping portion 42, a plurality of fingers are inserted through the insertion hole 43 while covering the second gripping portion 42 with a palm, so the width 42w of the second gripping portion 42 is A size that allows a plurality of fingers to be inserted with a sufficient length is preferable. Moreover, since it is necessary to rotate the wrist more when brushing the lower teeth than when brushing the upper teeth, this is also to prevent the hand from interfering with this rotation. Therefore, the width 42 w of the second grip portion 42 is set to be slightly smaller than the width 41 w of the first grip portion 41 among the grip portions 41, 42.

According to the toothbrush 1 of the first embodiment described above, the user inserts a plurality of fingers into the insertion hole 43 formed in the annular handle portion 4 and the first of the grip portions 41 or 42. The gripper 41 is gripped and the upper teeth are brushed, or the gripper 41 or 42 is gripped by the second gripper 42 and the lower teeth are polished, or the gripper is gripped according to the user's preference and convenience. By changing the portions 41 and 42, the brush surface 2a, the upper teeth, and the lower teeth can be easily aligned. In the present embodiment, the lower teeth are brushed by the thick first gripping portion, but when this is gripped, the upper teeth are difficult to brush (since the twist increases). On the other hand, the upper teeth are brushed with the thin second gripping portion, but when gripping, the lower teeth can be brushed without enlarging the twist of the hand so much. In addition, it is also possible to make the size and shape of the 1st holding part 41 the same as the 2nd holding part 42, and to make it a symmetrical shape.
Further, since the gripping portion 41 or 42 is gripped by inserting a plurality of fingers through the insertion hole 43 formed in the annular handle portion 4, a person with weak gripping force or a person with difficulty in bending fingers It is easy to have a toothbrush 1 as well. And even if a fingertip leaves | separates from the said holding part, since the several finger is penetrated by the said insertion hole 43, it is prevented that it falls out of a hand. Further, the user pushes the toothbrush 1 in the distal direction by placing a little finger or the like along a concave portion of a predetermined size provided on the rear end side of the gripping portions 41 and 42 according to the situation and preference. It can be used as an auxiliary when moving, and can be used as a place for placing a little finger.

(Second Embodiment)
The toothbrush of 2nd Embodiment to which this invention is applied is shown in FIG. 10 and FIG. The toothbrush 1a of the present embodiment is a toothbrush that can be easily erected on a washstand or the like with the head 2 as an upper side. Here, FIG. 10 is a plan view of the toothbrush 1a of the present embodiment, FIG. 11 (a) is a left side view thereof, and FIG. 11 (b) is a right side view thereof. In addition, about the description of the part which overlaps with embodiment mentioned above, the description is abbreviate | omitted by using the same code | symbol.

  In the toothbrush 1a of the present embodiment, the outer surface 44d of the connecting portion 44 is formed in a flat shape (FIG. 10), and it is easy to make the head 2 stand upright on a washstand or the like.

(Third embodiment)
A toothbrush according to a third embodiment to which the present invention is applied is shown in FIGS. The toothbrush 1b of the present embodiment is an assembly-type toothbrush that is compact and easy to carry when going out. Here, FIG. 12 is a plan view of the toothbrush 1b of the present embodiment, and FIG. 13 is a plan view showing a state in which the neck 3 and the head 2 are removed from the handle 4 of the toothbrush 1b of the present embodiment. 14 is a plan view showing a state in which the neck 2 and the head 3 are housed in the handle 4 of the toothbrush 1b of the present embodiment. In addition, about the description of the part which overlaps with embodiment mentioned above, the description is abbreviate | omitted by using the same code | symbol.

  Although the toothbrush 1b of this embodiment is not shown in figure, the through-hole of predetermined shape is formed in the front end side of the handle | pattern part 4, and the projection part 35 fitted corresponding to this through-hole is on the rear end side of the neck part 2. Formed (FIG. 13). Examples of the predetermined shape of the through hole include a square hole and a trapezoidal hole. For example, in the case of a square hole, the orientation of the brush surface 2a can be the same as that of the first gripping portion 41, or the orientation of the brush surface 2a can be the same orientation as that of the second gripping portion 42. The direction of the brush surface 2a can be properly used according to preference. For example, in the case of a trapezoidal hole, if the orientation of the brush surface 2a is determined to be the same as that of the first gripping portion 41, the orientation of the brush surface 2a is mistakenly set to the same orientation as that of the second gripping portion 42. Therefore, it is possible to prevent a mistake in the orientation of the brush surface 2a.

  According to the present embodiment, when using the toothbrush 1b, the protrusion 35 having a predetermined length formed on the rear end side of the neck 2 is formed into a through hole having a predetermined shape formed on the front end side of the handle 4. Inserted from the outside and fitted, the neck 2 is attached to the handle 4 for use (FIG. 12). When carrying out when going out, etc., the neck 2 is pulled out and removed from the handle 4 (FIG. 13), and the removed neck 3 and head 2 are stored in the insertion hole 43 formed in the handle 4, and the neck 2 The projection 35 is inserted into a through hole having a predetermined shape formed on the distal end side of the handle 4 from the inside, and is fitted (FIG. 14). Thus, the toothbrush 1b of this embodiment is easy to carry in a compact size when traveling or going out. In the present embodiment, the outer surface 44e of the connecting portion 44 has an arch shape toward the outer side (FIG. 12), and when carried, it is generally streamlined and rounded. It is easy to carry.

  As described above, the present invention is not limited to the embodiment described above. The flocking arrangement and flocking shape of the hair bundle group 21 can be arbitrarily set according to the application, for example, a one-tuft toothbrush or a hair tip dedicated to a predetermined tooth such as a back tooth or an anterior tooth. The material of the toothbrush body is not limited to plastics such as polypropylene and ABS resin, but may be made of a rubber material with high deformability, a rubber layer on the surface of the plastic, or a shape memory alloy. Also, a plurality of types of heads 2 and necks 2 having dedicated hair tips may be prepared and used by being attached to and detached from the handle 4 depending on the application. Thus, it goes without saying that the present invention can be modified as appropriate without departing from the spirit of the present invention.

1,1a, 1b toothbrush,
2 heads,
2a brush surface,
21 hair bundles,
3 neck,
4 Annular handle (handle),
41 1st grip part (grip part),
42 second gripping part (gripping part),
43 insertion hole,
44 connections

Claims (4)

A head portion having a brush surface on which the hair bundle group is implanted, a neck portion that connects the head portion and the handle portion, and an insertion hole that is disposed behind the neck portion and allows a plurality of fingers to pass therethrough. And an annular handle portion formed of a grip portion formed on the outer periphery of the insertion hole,
The gripping portion includes a first gripping portion formed in the same direction as the brush surface and a second gripping portion formed at a position facing the first gripping portion with the insertion hole interposed therebetween. Toothbrush characterized by.   The neck portion, the first grip portion, and the second grip portion are arranged substantially in parallel, and the neck portion is positioned at the center of the first grip portion and the second grip portion. Item 1. A toothbrush according to Item 1.   A concave curved surface for applying a thumb when gripping the gripping part is formed at both the root of the first gripping part and the neck part and the base of the second gripping part and the neck part. The toothbrush according to claim 1. The toothbrush according to claim 1, wherein a recess having a size capable of hooking at least a little finger is provided on a rear end side of the grip portion.

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