JP2017108921A - Fingerstall for toothbrushing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve problems of a fingerstall for toothbrushing, the problems in which making the fingerstall tight to prevent a finger from falling out from the sack in brushing gives pressure to the finger and in which using a thread for holding the sack fixes the posture of a finger of a brushing hand, making brushing difficult at a free angle.SOLUTION: A fingerstall for toothbrushing is composed of a cylindrical body which is closed in one end with a curved tip end part, which has an opening part in the other end, and which is formed with a flexible material. The fingerstall is characterized in that the cylindrical body has at least one or more bending parts between the opening part and the curved tip end part. The fingerstall catches the finger at the bending part, so that even if it is larger than the finger, the finger stays inside. Also, it facilitates putting on and off as it can be used even if larger than the finger.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a dentifrice finger sack that can be worn on a finger and brushed.

  Conventionally, various tools have been proposed for brushing on a finger. With reference to FIG. 21, a “toothbrush” for brushing the teeth of a pet disclosed in Patent Document 1 will be described. As shown in FIG. 21, three toothbrushes 100 are provided on the body portion 101a of the cylindrical main body 101 formed of a hard synthetic resin in a finger sack shape so as to correspond to the difference in the size of the user's finger. A slit 102 is formed. A bundle of linear brushes 105a is implanted in a plurality of implantation holes 104 provided in the flat portion 103 formed on the side surface of the distal end portion 101b to form the brush portion 105.

  As shown in FIG. 21 (d), the user presses the brush portion 105 against the teeth 100 c of the pet 100 b and moves back and forth while the finger 100 a is inserted into the cylindrical main body 101, and the toothbrush 100 Brush the pet 100b. Since the cylindrical main body 101 does not fall off the finger 100a during the brushing operation, the inner peripheral shape of the cylindrical main body 101 is smaller than the outer shape of the finger 100a, and the slit 102 opens elastically when the finger 100a is pushed in. It can be expanded by. That is, the finger 100a is elastically tightened by the inner peripheral surface of the cylindrical body 101 made of hard synthetic resin, thereby preventing the finger 100a from falling off during the brushing operation.

  Next, with reference to FIG. 22, a “finger suck type toothbrush” disclosed in Patent Document 2 and used for insertion into the index finger will be described. The finger sac type toothbrush 200 is provided on a sack body 201 having a rubber or vinyl cylindrical part for inserting an index finger, and a flat part provided with a mouth 204 for inserting a thumb, and provided on a belly part of the cylindrical part. Toothbrush portion 203. The user inserts his / her index finger into the cylindrical portion, passes the thumb through the mouth 204 so that the sac body 201 does not come out, and brushes the backside of teeth and the corners such as the back teeth with the finger sac toothbrush 200.

  Next, a “finger toothbrush” disclosed in Patent Document 3 will be described with reference to FIG. As shown in FIG. 23A, the finger toothbrush 300 includes a finger sack portion 301 formed in a bag shape so that a user can insert a finger, and an elongated extension portion 303 provided in an opening of the finger sack portion 301. including. A slit 302 is provided in a substantially middle region of the extension 303 at a right angle to the longitudinal direction of the extension 303. A friction surface 305 for massage of a toothbrush or gum is provided on one side of the finger sack portion 301. In the extension portion 303, a region near the finger sack portion 301 is the folded portion 304, and a region near the tip is the grip portion 306.

  As shown in steps in FIG. 23B, the finger toothbrush 300 is attached to the user's finger. Specifically, a finger is inserted into the finger sack portion 301, the hanging grip portion 306 is lifted upward, the extension portion 303 is folded back, the slit 302 is passed through the finger, and the extension portion 303 is further pushed down. Finger toothbrush 300 is attached. As a result of the attachment, the slit 302 closes the vicinity of the opening of the finger sack portion 301, the finger sack portion 301 is fixed to the finger, and a folded edge 307 is formed at the base of the finger.

  As shown in FIG. 23C, the attached finger toothbrush 300 is detached. Specifically, the finger toothbrush 300 in the mounted state pulls up the grip part 306 at the end of the extension part 303 to open the slit 302 and the finger suck part 301 comes out of the finger. Alternatively, the grip portion 306 is folded back so as to cover the friction surface 305, and the friction surface 305 is covered with the extension portion 303, and is pinched with a finger and removed from the finger.

Japanese Utility Model Publication No. 2-119030 Japanese Utility Model Publication No. 63-59531 JP 2001-245725 A

  In the toothbrush 100 disclosed in Patent Document 1 (FIG. 21), the slit 102 of the cylindrical main body 101 formed of hard synthetic resin is elastically opened (closed) with a boundary portion with the tip portion 101b as a fulcrum. The inner diameter of the main body 101 is enlarged (reduced). The toothbrush 100 is attached to the finger 100a by a frictional force that is partially generated on the side periphery of the fingertip by being pressed against the cylindrical inner wall surface of the tip 101b.

  Although the cylindrical main body 101 has the slit 102 and corresponds to the finger 100a having a different size, the tip 101b must be smaller than the inserted fingertip, so that the size of the finger that can actually be handled is limited. The In addition, the finger 100a is not cylindrical, but is tapered and flat, and has a shape partially protruding at a joint or the like. Since the finger 100a has three joints and bends in one direction with a high degree of freedom and is slightly bent, the finger 100a has a natural and easy posture. The brushing operation in which the finger is tightly inserted into the cylindrical main body 101 is burdensome and is likely to be painful.

  As shown in FIG. 21, the cylindrical main body 101 is used by inserting from the tip of the index finger 100 a to the proximal interphalangeal joint (hereinafter, “second joint”). A human finger is naturally bent slightly at the distal interphalangeal joint (hereinafter referred to as the “first joint”) and the second joint unless particularly force is applied. However, since the cylindrical main body 101 is formed of a hard synthetic resin, the finger cannot be bent freely at the first joint inside. In addition, the open end of the cylindrical body 101 is positioned close to the second joint, and it is very difficult to bend only the second joint without bending the first joint. The brushing operation must be performed in a very cramped state in which one joint and the second joint are fixed in an extended state, and only the metacarpophalangeal joint (hereinafter “third joint”) is free.

  In other words, the finger is in a state of a single toothbrush, and in order to polish areas where it is difficult to apply the linear brush 105a such as the back side of the teeth or between the teeth, it is necessary to bend the first joint and the second joint. It is not possible to change the direction and posture of the wrist, arm, and body. In addition, the work with the first joint and the second joint extended is an unreasonable posture that is contrary to a slightly bent natural and easy posture, and thus tends to cause fatigue of the user.

  That is, if the first joint and the second joint can be bent, the force applied to the fingertip (brush portion 105, flat portion 103) can be easily received while being distributed at each joint over the entire arched finger. . However, if the first joint and the second joint cannot be bent, the force applied to the fingertips cannot be distributed at the first joint and the second joint, and is increased in the lever relationship, so that the third joint It works intensively to make the brushing movement painful. This becomes prominent when the posture is changed, such as applying force or brushing the back of the teeth.

  Furthermore, since the toothbrush 100 is mounted by frictional force with a finger pressed against the inner wall surface of the cylindrical main body 101, the brush portion 105 is pushed (in FIG. 21 (d), the toothbrush 100 is moved from right to left). ) Is good, but when pulling (moving from left to right in FIG. 21D), the pressing force and the frictional force are lost, and the toothbrush 100 comes out of the finger 100a.

  In order to prevent this, the finger 100a is bent at the first joint and the fingertip is strongly pressed against the inner wall of the tip 101b in order to increase the frictional force against the force of pulling the tubular body 101 from the finger 100a. Alternatively, the inner shape of the cylindrical main body 101 needs to be reduced. However, since the portion between the slits 102 is a hard synthetic resin plate having an arc-shaped cross section, in the former case, the movement of the second joint is restricted at the open end of the cylindrical main body 101. It is difficult to bend. In the latter case, the finger 100a is constantly tightened by the inner peripheral wall of the cylindrical main body 101 to restrict the movement and is not good for blood circulation.

  In addition, since the finger contacts and presses the inner peripheral wall of the tip 101b at a relatively large area at the abdomen and contacts and presses at a relatively small area at the joint, the frictional force at the joint is compared with the frictional force at the abdomen. Small and sufficient holding power cannot be obtained. If the pressing force per unit contact area is increased in order to secure the frictional force at the joint, the finger tightening force, particularly the tightening force on the joint, will increase, causing pain to the finger and causing poor blood circulation. Become.

  Further, the cylindrical inner surface of the tip 101b and the finger are in contact with each other over a relatively large area at a soft part such as the belly of the finger, and at a relatively small area at the joint. Therefore, the pressing force per unit area applied to the finger is greater at the joint than at the abdomen and increases pain, but the resulting frictional force is less than at the abdomen, so the finger (end node) and the cylindrical inner surface of the tip 101b The frictional force decreases. Furthermore, the direction of pulling during brushing is nearly perpendicular to the direction in which the finger (end node) presses the cylindrical inner surface of the tip 101b, so the frictional force with the cylindrical inner surface is offset by the pulling force of the finger, and is worn The power decreases and it becomes easier to escape.

  The finger suck type toothbrush 200 (FIG. 22) disclosed in Patent Document 2 is used in a state where an index finger is inserted into a cylindrical portion provided with a toothbrush portion 203 and a thumb is inserted into a mouth 204. Therefore, unlike the above-described toothbrush 100 (Patent Document 1), when the toothbrush portion 203 is pushed (moved from right to left in FIG. 22A), it is also pulled (in FIG. 22A). In this case, the finger sucking toothbrush 200 is prevented from being pulled out by the index finger and the thumb, respectively. Further, even when the finger sack type toothbrush 200 is worn, there is an advantage that there is no blood circulation problem and the index finger can be bent.

  However, in the case of the finger sac toothbrush 200, even if it does not reach the finger during brushing, the brushing may be hindered or the user may be burdened. That is, in order to prevent omission and reliable brushing, it is preferable to keep the sack body 201 in a tensioned state by stretching the index finger and thumb as shown in FIG. This is because if the sack body 201 is in a slack state, the toothbrush portion 203 moves during brushing and does not properly hit the teeth. Even if the sac body 201 is in tension and the finger sac toothbrush 200 is mounted, for example, if the index finger is bent to polish the back side of the teeth, the sack body 201 will be loosened and the brush part 203 will not come off. It moves during brushing.

  For this reason, the user needs to change his / her thumb in an unreasonable posture during brushing according to how the index finger is bent. The sack body 201 is in the most tense state when the index finger is in a straight state, and needs to be small with respect to the hand to be worn by the amount of slack that is generated according to bending. As described above, in the finger suck type toothbrush 200, not only the index finger that directly operates the toothbrush portion 203 but also the thumb must be maintained in a predetermined posture, which places a burden on the user and, in some cases, the thumb. Interferes with brushing.

  A finger toothbrush 300 (FIG. 23) disclosed in Patent Document 3 is fixed to a finger by being tightened by a slit 302 provided in an extension part 303 depending from an open end of a finger sack part 301 in a state where a finger is inserted. The Thus, since the finger toothbrush 300 is fixed only with the index finger (near the third joint), there is no problem with the thumb in the finger suck type toothbrush 200 (Patent Document 2). Further, there is no problem in the toothbrush 100 (Patent Document 1) that the index finger cannot be bent freely.

  However, in order to prevent the finger sack portion 301 from moving and coming off during brushing, the tightening force by the slit 302 needs to be sufficiently large and has a blood circulation problem as in the toothbrush 100. . Further, the folded portion 304, the folded edge 307, and the grip portion 306 of the extension portion 303 are formed three-dimensionally and movably in the vicinity of the open end portion (the base of the index finger) of the finger sack portion 301 so as to hit during brushing. Thus, there is a problem that neither the toothbrush 100 nor the finger-suck type toothbrush 200 gives an unpleasant feeling to the brushing object or disturbs the user himself.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide a dentifrice finger sack that can be easily attached and detached without imposing a burden on the user and can be easily and surely attached to a finger without tightening. And

More specifically, the toothpaste finger sack according to the present invention is:
One end is closed by a curved tip, an opening is provided at the other end, and is constituted by a cylindrical main body formed of a flexible material.
The main body has at least one bent portion between the opening and the curved tip portion.

  Since the toothpaste finger sack according to the present invention is a flexible material and partially has a bent portion, the fingertip belly can be hooked inside the bent portion. For this reason, even if the finger sack is worn and rubbed back and forth, the finger sack is not easily removed. Therefore, since a finger sack larger than the finger can be used, it is easy to attach and detach. In addition, since the finger sack larger than the finger is used, the finger is not compressed.

It is explanatory drawing of the structure of the finger suck which concerns on Example 1 of Embodiment 1 of this invention. It is explanatory drawing of the structure of the finger suck which concerns on Example 2 of Embodiment 1 of this invention. It is explanatory drawing of the structure of the finger suck which concerns on Example 3 of Embodiment 1 of this invention. It is explanatory drawing of the structure of the finger suck which concerns on Example 1 of Embodiment 2 of this invention. It is explanatory drawing of the structure of the finger suck which concerns on Example 1 of Embodiment 3 of this invention. It is explanatory drawing of the structure of the finger suck which concerns on Example 2 of Embodiment 3 of this invention. It is explanatory drawing of the structure of the finger suck which concerns on Example 3 of Embodiment 3 of this invention. It is explanatory drawing of the structure of the finger suck which concerns on Example 4 of Embodiment 3 of this invention. It is explanatory drawing of the structure of the finger suck which concerns on Example 5 of Embodiment 3 of this invention. It is explanatory drawing of the structure of the finger suck which concerns on Example 6 of Embodiment 3 of this invention. It is explanatory drawing of the structure of the finger suck which concerns on Example 7 of Embodiment 3 of this invention. It is explanatory drawing of the structure of the finger suck which concerns on Example 8 of Embodiment 3 of this invention. It is explanatory drawing of the structure of the finger suck which concerns on Example 1 of Embodiment 4 of this invention. It is explanatory drawing of the structure of the finger suck which concerns on Example 2 of Embodiment 4 of this invention. It is explanatory drawing of the structure of the finger suck which concerns on Example 3 of Embodiment 4 of this invention. It is explanatory drawing of the structure of the finger suck which concerns on Example 4 of Embodiment 4 of this invention. It is explanatory drawing of the structure of the finger suck which concerns on Example 5 of Embodiment 4 of this invention. It is explanatory drawing of the structure of the finger suck which concerns on Example 6 of Embodiment 4 of this invention. It is explanatory drawing of the structure of the finger suck which concerns on Example 7 of Embodiment 4 of this invention. It is a figure which shows the variation of the shape of the acicular protrusion of a brush part. It is a perspective view which shows the external appearance of the toothbrush currently disclosed by patent document 1. FIG. It is a figure which shows the use condition of the finger suck type toothbrush currently disclosed by patent document 2. FIG. It is a figure which shows the finger toothbrush currently disclosed by patent document 3. FIG.

  The toothpaste finger sack (hereinafter referred to as “finger sack Cf”) according to the present invention is used when a user wears his / her finger (preferably the index finger) and performs a brushing operation. The teeth that the user brushes may be not only their own teeth, but also other people's teeth and pet's teeth. The “tooth brushing operation” refers to a brushing operation for the purpose of removing dirt from the teeth, gums (gingiva), or tooth gaps and massaging the gums (gingiva). The finger sack Cf is prepared by preliminarily assuming the length and thickness of a finger to be worn and determining the length and thickness.

  Basically, the finger sack Cf is designed to cover even the proximal phalanx of the index finger, assuming that the finger to be worn is the index finger. However, one size cannot fit everyone's index finger. Thus, several sizes may be provided.

<Embodiment 1>
Before specifically describing each example of the finger sack Cf1 according to the first embodiment of the present invention with reference to FIGS. 1 to 3, the finger sack Cf1 (not shown) according to the first embodiment of the present invention is described. ) Will be described. The sac body Sc of the finger sack Cf1 has an opening O at the end (the other end) and a curved tip end R closed by a curved surface at the tip (one end) by a flexible material (material). It is formed in a cylindrical shape with one end closed. The “cylindrical shape with one end closed” is hereinafter simply referred to as “cylindrical shape”. In addition, an object formed in a cylindrical shape with one end closed is referred to as a “cylinder”. The inner diameter of the cylindrical body may not be a circle, and may not be the same depending on the location.

  The sac body Sc is formed so that its cross section gradually decreases from the opening O toward the curved distal end R. However, as will be described later, there may be a portion where the cross-sectional area is partially narrowed from the opening O to the curved distal end R. Further, the sack body Sc is provided with at least one bent portion F1 between the opening O and the curved tip portion R. The center of the bent portion F1 is called a bent point P1. In the sac body Sc, a portion from the bending point P1 to the curved tip R is a sack upper portion Sc1, and a portion from the bending point P1 to the opening O is a sack lower portion Sc2. The direction from the opening O toward the curved tip end R is referred to as the length direction.

  A plurality of bent portions F1 may exist in the sack body Sc. However, the first bent portion F1 from the curved distal end R toward the opening O is provided in the vicinity of the first joint of the finger.

  The sac body Sc is configured such that the central axis L1 and the central axis L2 of the sac upper part Sc1 and the sack lower part Sc2 intersect each other at a bending point P1 at a predetermined angle θ1 (hereinafter referred to as “sack bending angle θ1”). It is bent in the direction Ds1 (hereinafter, “sack bending direction Ds1”). The bent portion F1 is also a boundary portion where the sac upper portion Sc1 and the sac lower portion Sc2 partially overlap. The central axis L1 is a rotationally symmetric axis in the longitudinal direction of the sac upper part Sc1a excluding the curved tip R, and the central axis L2 is a rotationally symmetric axis in the longitudinal direction of the sac lower part Sc2a.

  That is, the bent portion F1 can be said to be a section including the bent point P1 and having a width in the length direction. A portion of the inner wall of the bent portion F1 that has a protruding shape so as to approach the center direction of the sack body Sc is called a protruding inner wall surface SWx, and a portion that has a concave shape so as to face the protruding inner wall surface SWx and away from the center. It is called a concave inner wall surface SWv. The outer wall on the opposite (back) side of the protruding inner wall surface SWx is called a concave outer wall surface, and the outer wall on the opposite (back) side of the concave inner wall surface SWv is called a protruding outer wall surface.

Example 1
With reference to FIG. 1, a toothpaste finger sack (hereinafter, “finger sack Cf1a”) according to Example 1 of Embodiment 1 of the present invention will be described in detail. The finger sack Cf1a and its unique components and features according to the present embodiment are expressed by adding the suffix “a” to the reference numerals attached to the above-described finger sack Cf1 and its components and features. FIG. 1A shows the appearance of the finger sack Cf1a as viewed from the upper right. FIG. 1B shows a side cross-section obtained by dividing the finger sack Cf1a in the longitudinal direction. The finger sack Cf1a is preferably integrally formed of a resin material having flexibility and water resistance, typically silicone.

  As can be seen in FIGS. 1 (a) and 1 (b), the finger sack Cf1a has a circular opening Oa at the end and has a circular cross section (diameter) toward the tip closed by the curved tip Ra. ) Is formed of a sac body Sca which is a conical cylindrical body. Further, the sac body Sca has a shape bent at a bent portion F1a including the bent point P1a. The sac body Sca (finger sack Cf1a) is roughly divided into a sack upper part Sc1a from the bending point P1a to the curved tip end part Ra, and a sack lower part Sc2a from the bending point P1a to the opening part Oa.

  The sac body Sca is bent in the sack bending direction Ds1a so that the central axis L1a and the central axis L2a of the sack upper part Sc1a and the sack lower part Sc2a form a predetermined sack bending angle θ1a and intersect at a bending point P1a. Yes. The central axis L1a is a rotationally symmetric axis in the longitudinal direction of the sac upper portion Sc1a excluding the curved tip portion Ra, and the central axis L2a is a rotationally symmetric axis in the longitudinal direction of the sac lower portion Sc2a.

  The bent portion F1a is a boundary portion where the sac upper portion Sc1a and the sac lower portion Sc2a partially overlap. A portion of the inner wall of the bent portion F1a that has a protruding shape so as to approach the center direction of the sac body Sca is called a protruding inner wall surface SWxa, and a portion that has a concave shape facing the protruding inner wall surface SWxa and away from the center. It is called a concave inner wall surface SWva. The outer wall on the opposite (back) side of the projecting inner wall surface SWxa is called a concave outer wall surface, and the outer wall on the opposite (back) side of the concave inner wall surface SWva is called a projecting outer wall surface.

  FIG. 1C shows a cross section C1a obtained by cutting the sack upper portion Sc1a along a line Ic-Ic with a plane perpendicular to the central axis L1a in FIG. FIG. 1D shows a cross section C2a of the sack lower portion Sc2a cut along a line Id-Id in FIG. 1B along a plane perpendicular to the central axis L2a. The cross section C1a is a circle defined by the diameter D1, and the cross section C2a is a circle defined by the diameter D2 (D2> D1). As described above, the finger sac Cf1a is bent at the conical cylindrical body (sack body Sca) whose tip is closed by the curved tip part Ra having a circular cross-sectional shape and whose lower end is opened by the opening part Oa having a circular cross-section. The portion F1a has a shape bent in the sack bending direction Ds1a. The diameters D1 and D2 are preferably gradually decreased from the opening Oa of the conical cylinder toward the curved tip end portion Ra. However, it does not exclude that there is a place having the same inner diameter. The diameters D1 and D2 are collectively referred to as the diameter D of the finger sack Cf1a.

  In FIG. 1C, a square CS1 inscribed in a circle of the cross section C1a of the sac upper portion Sc1a is indicated by a two-dot chain line. Each of two sides parallel to the sac bending direction Ds1a of the square CS1 is defined as “parallel side Lp1”, and two sides perpendicular to the sack bending direction Ds1a are defined as “vertical side Lv1”. The cylindrical peripheral wall (side peripheral portion) of the sac upper portion Sc1a can be divided into four regions corresponding to the parallel side Lp1 and the vertical side Lv1.

  The four regions are the upper right peripheral wall Wp1R facing the parallel side Lp1 on the right side (upper side in FIG. 1C) when viewed in the sack bending direction Ds1a, and the lower side in the left parallel side Lp1 (FIG. 1C). ) Facing the upper left peripheral wall Wp1L, the projecting inner wall surface SWxa side (left side in FIG. 1C), the upper concave peripheral wall Wv1p facing the vertical side Lv1, and the concave inner wall surface SWva side (FIG. 1C). And the upper projecting peripheral wall Wv1d facing the vertical side Lv1 on the right side. The upper concave-side peripheral wall Wv1p and the upper protruding-side peripheral wall Wv1d are the protruding (protruding inner wall surface SWxa) side and the concave (concave inner wall surface SWva) side, respectively, when viewed from the inside of the sack upper portion Sc1a.

  Similarly, as shown in FIG. 1 (d), the cylindrical peripheral wall (side peripheral portion) of the sack lower portion Sc2a is the lower right side facing the parallel side Lp2 on the right side of the square CS2 inscribed in the sack bending direction Ds1a. The peripheral wall Wp2R, the lower left peripheral wall Wp2L facing the left parallel side Lp2, the lower concave peripheral wall Wv2p facing the vertical side Lv2 on the protruding inner wall surface SWxa, and the vertical side Lv2 on the concave inner wall surface SWva side It can be divided into four regions with the lower projecting peripheral wall Wv2d.

  The upper concave peripheral wall Wv1p and the lower concave peripheral wall Wv2p, the upper protruding peripheral wall Wv1d and the lower protruding peripheral wall Wv2d, the upper right peripheral wall Wp1R and the lower right peripheral wall Wp2R, the upper left peripheral wall Wp1L and the lower left peripheral wall Wp2L, respectively. The sack body Sca of the finger sack Cf1a is formed continuously. In this sense, the upper concave peripheral wall Wv1p and the lower concave peripheral wall Wv2p are collectively referred to as a concave peripheral wall Wvp, the upper protruding peripheral wall Wv1d and the lower protruding peripheral wall Wv2d are collectively referred to as a protruding peripheral wall Wvd, and the upper right peripheral wall Wp1R. The lower right peripheral wall Wp2R is collectively referred to as a right peripheral wall WpR, and the upper left peripheral wall Wp1L and the lower left peripheral wall Wp2L are collectively referred to as a left peripheral wall WpL.

  In use, the finger sac Cf1a is attached to the finger so that the sac bending direction Ds1a substantially coincides with the direction Df in which the finger bends (hereinafter, “finger bending direction Df”, not shown). In this case, the concave peripheral wall Wvp is positioned on the abdomen side of the finger, the protruding peripheral wall Wvd is positioned on the back side of the finger, the right peripheral wall WpR is positioned on the right side of the finger, and the left peripheral wall WpL is on the left side of the finger Located on the side. Here, the right side and the left side of the finger are directions seen from the back side of the finger.

  The bent joint F1a accommodates the first joint, the sac upper part Sc1a accommodates the end node part (terminal phalanx), and the sac lower part Sc2a accommodates at least the middle node part (medium phalanx). The sac lower portion Sc2a may accommodate a proximal segment (a proximal phalanx). The finger accommodated in the sac body Sc is accommodated in a state of being naturally bent in the finger bending direction Df by the first joint. In this case, the protruding inner wall surface SWxa faces the concave side of the bent finger, and the concave inner wall surface SWva faces the protruding side of the bent finger.

  The distal phalanx is the bone from the tip to the first joint in the index finger, middle finger, ring finger, and little finger, and the middle phalanx is the bone from the first joint to the second joint, The proximal phalanx refers to the bones from the second joint to the third joint. In the thumb, the bone between the tip and the first joint is called the distal phalanx, but the bone between the first joint and the second joint is the base phalanx. That is, the thumb has no middle phalanx.

  In addition, the above-mentioned finger accommodation state assumes that the brushing operation is performed using one of the index finger, the middle finger, the ring finger, and the little finger, but excludes performing the brushing operation using the thumb. is not. In the case of the thumb, since there is no middle phalanx, the base phalanx is accommodated in the lower sac Sc2a.

  Assuming that the angle at which the end node bends with respect to the middle node is the finger bending angle θf (not shown), the sack bending angle θ1a is the finger bending angle θf (5 < The same or close to θ1a <30) is preferable. By forming in this way, the abdomen of the terminal node portion of the attached finger is in contact with or very close to the inner wall (projecting inner wall surface SWxa side) of the upper concave peripheral wall Wv1p of the sack upper portion Sc1a.

  Further, since the finger sac Cf1a is made of a flexible resin, the middle node part of the sac upper part Sc1a is inserted at the abdomen of the terminal node part by further bending or extending the terminal node part with respect to the middle node part. The sack lower portion Sc2a can be easily bent and extended beyond the range of the sac bending angle θ1a (θf <θ1a, θf> θ1a). Even if the finger bending direction Df is not the same as the sac bending direction Ds1a, a slight load is added to the bending and stretching, but at any angle (θf> θ1a, θf <θ1a) exceeding the range of the sack bending angle θ1a. It can be bent and stretched. The inner shape (diameter D) of the finger sack Cf1a is set to be larger than the outer shape of the finger that is supposed to be worn so as not to be carelessly removed from the finger for the convenience of attachment and detachment to the finger.

  An edge Efa projecting in the centrifugal direction from the outer periphery of the opening Oa is integrally provided at the lower end of the lower sack Sc2a (FIGS. 1A and 1B). The edge Efa is intended to reinforce the strength of the open end (opening Oa) of the sack lower part Sc2a and to be used as a clue when the finger sack Cf1a is attached or detached.

  As described above, even if the finger bending direction Df is not the same as the sac bending direction Ds1a, the distal joint portion is at an arbitrary angle within the movable range (θf> θ1a, θf < It can be easily bent and extended to θ1a). That is, with the finger sack Cf1a attached, the end node can be bent and extended at an arbitrary angle (finger bending angle θf) in an arbitrary direction within the movable range (finger bending direction Df).

  The direction in which the finger is moved toward the curved tip end portion Ra is defined as the front direction, and the direction in which the finger is moved toward the opening portion Oa is defined as the rear direction. The direction perpendicular to the front-rear direction is the up-down direction. During the tooth brushing operation, the inner wall surface (protruding inner wall surface SWxa) of the upper concave side peripheral wall Wv1p of the upper sac Sc1a in which the finger having the first joint bent with respect to the middle joint portion in the first joint is accommodated is the abdomen of the end node portion. The user can bend or stretch the finger while pressing the outer surface of the upper concave peripheral wall Wv1p (the outer surface of the left peripheral wall in FIG. 1) against the gums and teeth. Or move the entire hand back and forth or up and down.

  At this time (especially when the finger is retracted), the inner surface of the upper concave peripheral wall Wv1p is strongly pressed from the diagonally downward direction against the abdomen of the terminal node, and a large frictional force is generated between the two. Since this frictional force is proportional to the vertical component of the backward force with respect to the abdomen of the terminal node, the frictional force (holding force of the finger sack Cf1a) increases as the finger bending angle θf increases.

  The upper part of the sack Sc1a (particularly, the upper concave side peripheral wall Wv1p) is not parallel to the object of the toothbrushing operation but is obliquely pressed at an angle with the abdomen of the terminal node bent at the first joint. The frictional force generated between the peripheral wall Wvp, the projecting side peripheral wall Wvd, the right side peripheral wall WpR, and the left side peripheral wall WpL) is not offset by the force that causes the finger to recede as in the above-mentioned Patent Document 1.

  Furthermore, in addition to the force of pressing the sack upper part Sc1a against the object of the toothbrushing operation with the finger, the force of moving the finger backward acts as a force of pressing the sac upper part Sc1a against the object of the toothbrushing operation. As a result, a large frictional force is generated between the distal node portion and the inner wall surface of the sack upper portion Sc1a while reducing the burden on the finger, and sufficient between the finger sac Cf1a and the finger inserted in the finger sac Cf1a. The holding power in the mounted state can be obtained.

  Therefore, even if the finger sac Cf1a is slightly larger than the finger inserted into the finger sac Cf1a, the finger is prevented from coming off the finger sack Cf1a during the brushing operation. As a result, a finger sack Cf1a having a slightly larger size can be used, which makes it easy to attach and detach. Further, even when the finger sack Cf1a is worn, the worn finger is rarely pressed from the finger sack Cf1a.

  In addition, for normal fingers such as the back teeth, gums, and the back side of teeth, the posture of the upper sac Sc1a can be changed by changing the direction of the fingers or bending the fingers. The position can be adjusted easily. In such a case, the finger sack Cf1a also comes into contact with a part other than the belly of the finger (for example, the side part or the back part of the finger), so that a larger frictional force is generated and the wearing state with the finger is reduced. Retained. The finger sack Cf1a is particularly suitable for massage of gums in addition to tooth brushing.

(Modification)
Next, with reference to FIG.1 (e) and FIG.1 (f), finger suck Cf1a 'which is a modification of finger suck Cf1a is demonstrated. The finger sac Cf1a ′ is configured in the same manner as the finger sac Cf1a, except that when the finger sac Cf1a ′ is attached to the finger, the peripheral wall of the portion facing the side of the finger is thickened. Yes. Therefore, regarding the appearance and the side cross section, while using FIG. 1 (a) and FIG. 1 (b), the finger sac Cf1a, the curved tip portion Ra, the sack upper portion Sc1a, the sack lower portion Sc2a, the bent portion F1a, the bent point P1a, And the opening Oa shall be read as a finger sac Cf1a ′, a curved tip end Ra ′, a sack upper part Sc1a ′, a sack lower part Sc2a ′, a bent part F1a ′, a bent point P1a ′, and an opening part Oa ′, respectively.

  FIGS. 1E and 1F show a cross section C1a ′ and a cross section C2a ′ of the sac upper portion Sc1a ′ and the sac lower portion Sc2a ′, respectively. In consideration of the convenience of drawing and the visibility, the display other than the components unique to the modification is omitted unless particularly necessary.

  In the figure, the two crescent-shaped cross-sections indicated by the symbol Wa are the thick portions Wa. The thick part Wa is intended to protect the side part of the finger wearing the finger sack Cf1a ′ during brushing from the tip of the tooth to be brushed, and the opening part Oa on the right peripheral wall WpR and the left peripheral wall WpL. It is provided in a band shape having a predetermined width from 'to the curved tip end portion Ra'.

  An example in which the thick portion Wa is formed integrally with the main body so as to protrude from the inner surfaces of the right peripheral wall WpR and the left peripheral wall WpL of the finger sack Cf1a 'is illustrated. However, the thick part Wa may be provided separately from the main body on the inner surfaces of the right peripheral wall WpR and the left peripheral wall WpL. Further, as will be described later with reference to FIGS. 5 to 12, the thick portion Wa is formed integrally with the main body so as to protrude from the outer surfaces of the right peripheral wall WpR and the left peripheral wall WpL or separate from the main body. It may be provided.

  In this example, the thick portion Wa is provided as a belt-like body having a predetermined thickness over the entire region of the side peripheral portion from the curved distal end portion Ra 'to the opening portion Oa'. However, the thickness and width may be changed depending on the position where necessary. Moreover, you may provide in arbitrary one or more parts instead of the whole region of a side peripheral part, and you may change thickness and width | variety for every part.

  In this way, by providing the thick portions Wa on the right peripheral wall WpR and the left peripheral wall WpL of the finger sac Cf1a ′ (sack body Sca ′), there is a high possibility of contacting the tooth tip that is the object of the tooth brushing operation during the tooth brushing operation. The finger side can be effectively protected. Further, even when a tooth brushing operation is performed on a person or animal other than himself (collectively referred to as “others”), damage can be reduced even if someone accidentally bites. The side part of the finger is torn together with the sac body Sca '(the right peripheral wall WpR and the left peripheral wall WpL) by the other person's tooth tip and injured, and various germs in the other person's mouth invading through the wound The user can be protected from invading and getting sick.

(Example 2)
Next, with reference to FIG. 2, a finger sack Cf1b according to Example 2 of Embodiment 1 of the present invention will be described. FIG. 2 (a) shows the appearance of the finger sack Cf1b as viewed from the upper right. FIG. 2B shows a side cross-section obtained by dividing the finger sack Cf1b in the longitudinal direction. As can be seen from the figure, the finger sac Cf1b is configured in the same manner as the above-described finger sac Cf1a except that the conical cylinder is replaced with an elliptical cone.

  Hereinafter, for the components unique to the finger sac Cf1b (Example 2) corresponding to the components of the finger sack Cf1a, the suffix of the reference symbol attached to the component of the finger sack Cf1a is replaced with “a”. “b” is used for identification, and explanation is omitted unless particularly necessary.

  As shown in FIGS. 2 (c) and 2 (d), the curved tip Rb, the sack upper portion Sc1b, the bent portion F1b, the sack lower portion Sc2b, the opening Ob, and the edge Efb of the finger sack Cf1b are extended. Except that the cross-sectional shape cut by a plane perpendicular to the center axis (center axes L1b and L2b) is an ellipse, the curved tip portion Ra of the finger sac Cf1a, the sack upper portion Sc1a, the bent portion F1a, the sack lower portion Sc2a, the opening It is comprised similarly to the part Oa and the edge Efa. The central axis L1b is a rotationally symmetric axis in the length direction of the sac upper part Sc1a, and the central axis L2b is a rotationally symmetric axis in the length direction of the sack lower part Sc2a.

  The sac upper portion Sc1b and the sack lower portion Sc2b extend along the central axis L1b and the central axis L2b. The central axis L1b and the central axis L2b intersect at a bending point P1b at a sac bending angle θ1b, and the sack upper portion Sc1b is bent in the sack bending direction Ds1b with respect to the sack lower portion Sc2b. The sac upper part Sc1b and the sack lower part Sc2b constitute a sack body Scb.

  2C shows a cross section C1b obtained by cutting the upper Sc1b along a line IIc-IIc in FIG. 2B along a plane perpendicular to the central axis L1b. FIG. 2D shows a cross section C2b obtained by cutting the sack lower part Sc2b along a line IId-IId in FIG. 2B along a plane perpendicular to the central axis L2b.

  The cross section C1b is an ellipse defined by the major axis Aa1 and the minor axis Ai1 (Aa1> Ai1), and the section C2b is defined by the major axis Aa2 and the minor axis Ai2 (Aa2> Aa1, Ai2> Ai1, Aa2> Ai2). Is oval shaped. The cross section C1b and the cross section C2b are preferably similar, and the sac bending direction Ds1b is parallel to the short axes Ai1 and Ai2, but is not limited thereto. The short axes Ai1 and Ai2 are collectively referred to as the short axis Ai, and the long axes Aa1 and Aa2 are collectively referred to as the long axis Aa.

  In FIG. 2C, a rectangle CR1 inscribed in the ellipse of the cross section C1b of the sack upper portion Sc1b is indicated by a two-dot chain line. Each of two sides of the rectangle CR1 parallel to the sack bending direction Ds1b is referred to as “short side Ls1”, and two long sides perpendicular to the sack bending direction Ds1b are referred to as “long side L11”.

  The oval cylindrical peripheral wall (side peripheral portion) of the sac upper portion Sc1b includes an upper right peripheral wall We1R that faces the short side Ls1 on the right side (upper side in FIG. 2C) when viewed in the sack bending direction Ds1b, and a left short side Ls1. The upper left peripheral wall We1L facing (lower side in FIG. 2 (c)), the upper concave peripheral wall We1p facing the long side Ll1 on the protruding inner wall surface SWxb side (left side in FIG. 2 (c)), It can be divided into four regions with the upper projecting peripheral wall We1d facing the long side Ll1 on the wall surface SWvb side (right side in FIG. 2C). The upper concave peripheral wall We1p and the upper protruding peripheral wall We1d are respectively a protruding (protruding inner wall surface SWxb) side and a concave (concave inner wall surface SWvb) side when viewed from the inside of the sack upper portion Sc1b.

  Similarly, as shown in FIG. 2D, the oval cylindrical peripheral wall (side peripheral portion) of the sack lower portion Sc2b is the lower left side facing the left and right short sides Ls2 when viewed from the sack bending direction Ds1b of the inscribed rectangle CR2. Four of the peripheral wall We2L and the lower right peripheral wall We2R, the lower concave peripheral wall We2p facing the long side Ll2 on the projecting inner wall surface SWxb side, and the lower projecting peripheral wall We2d facing the long side Ll2 on the concave inner wall surface SWvb side Can be divided into areas.

  The upper concave peripheral wall We1p and the lower concave peripheral wall We2p, the upper projecting peripheral wall We1d and the lower projecting peripheral wall We2d, the upper right peripheral wall We1R and the lower right peripheral wall We2R, the upper left peripheral wall We1L and the lower left peripheral wall We2L, respectively. The sack body Scb of the finger sack Cf1b is formed as a concave side peripheral wall Wep, a projecting side peripheral wall Wed, a right side peripheral wall WeR, and a left side peripheral wall WeL.

  Similar to the finger sac Cf1a, the finger sac Cf1b is used by being attached to the finger so that the sack bending direction Ds1b substantially coincides with the finger bending direction Df. However, since the cross section of a human finger is flat rather than circular, the finger sac Cf1b having an elliptical cross-sectional shape has a gap generated between the finger sac Cf1a having a circular cross-sectional shape and the finger sack Cf1a. Can be smaller.

  When the dimension in the minor axis Ai (Ai1, Ai2) direction is smaller than the finger to be worn, the dimensional difference is compensated by the member in the major axis Aa (Aa1, Aa2) direction, and the belly and back of the finger and the finger sack The degree of adhesion (friction force) with Cf1b is improved (increased). As a result, it is difficult to come off during brushing, and a more fit feeling can be obtained.

(Modification)
Next, a finger sack Cf1b ′, which is a modification of the finger sack Cf1b, will be described with reference to FIGS. The finger sac Cf1b ′ is similar to the finger sac Cf1a ′, which is a modification of the finger sack Cf1a, except that a thick portion Wb is provided on the peripheral wall of the portion corresponding to the side of the finger. The configuration is the same as Cf1b. Therefore, regarding the appearance and side cross section of the finger sack Cf1b ′, FIG. 2A and FIG. 2B are used, and the description of the configuration is omitted. The finger sac Cf1b, the curved tip Rb, the sack upper Sc1b, the sack lower Sc2b, the bent part F1b, the bent point P1b, and the opening Ob are respectively the finger sack Cf1b ′, the curved tip Rb ′, the sack upper Sc1b ′, and the sack lower part. It shall be read as Sc2b ′, bent part F1b ′, bent point P1b ′, and opening Ob ′.

  FIG. 2E and FIG. 2F show a cross section C1b 'and a cross section C2b' of the sac upper portion Sc1b 'and the sac lower portion Sc2b', respectively. In consideration of the convenience of drawing and the visibility, the display other than the components unique to the modification is omitted unless particularly necessary.

  In the figure, the two crescent-shaped cross-sections indicated by the symbol Wb are the thick portions Wb. The thick wall portion Wb is designed to protect the side portion of the finger wearing the finger sack Cf1b ′ during brushing from the tip of the tooth to be brushed in the same manner as the above-described thick portion Wa. The WeR and the left peripheral wall WeL are provided in a strip shape with a predetermined width from the opening Ob ′ to the curved tip Rb ′. As with the thick portion Wa, the thick portion Wb may be formed integrally with or separately from the sack body Scb so as to protrude from the inner surface or the outer surface of each of the right peripheral wall WeR and the left peripheral wall WeL. is there. The thickness and the place to be provided are the same as those of the thick portion Wa.

(Example 3)
Next, with reference to FIG. 3, a finger sack Cf1c according to Example 3 of Embodiment 1 of the present invention will be described. 3 (a), 3 (b), 3 (c), and 3 (d) are the same as FIGS. 2 (a), 2 (b), 2 (c), and 2 (a), respectively. Similarly to d), the appearance of the finger sac Cf1c as viewed obliquely from the upper right, the longitudinal section of the finger sac Cf1c, the transverse section of the sac upper part Sc1c, and the transverse section of the sack lower part Sc2c are shown. As can be seen from the figure, the finger sac Cf1c is configured in the same manner as the above-described finger sac Cf1b except that the conical cylinder is replaced with a quadrangular pyramid cylinder.

  Hereinafter, for the components unique to the finger sack Cf1c (Example 3) corresponding to the components of the finger sack Cf1b, the suffix of the reference symbol attached to the component of the finger sack Cf1b is replaced with “b”. “c” is used for identification, and explanation is omitted unless particularly necessary.

  As shown in FIGS. 3 (c) and 3 (d), the curved tip portion Rc, the sack upper portion Sc1c, the bent portion F1c, the sack lower portion Sc2c, the opening portion Oc, and the edge Efc of the finger sack Cf1c are extended. A cross-sectional shape cut by a plane perpendicular to the central axes L1c and L2c, which are the existing axes, is a quadrangular (rectangular) shape.

  More precisely, the finger sack Cf1c has a rounded quadrangular pyramid-shaped cylinder (sack body Scc) having a rounded cross section with rounded corners Cx1 and Cx2 (Cx1 <Cx2) in the sack bending direction Ds1c. It is bent. The roundness of the corners Cx1 and Cx2 is determined in consideration of manufacturing and use convenience, durability, and wearing feeling. The corner Cx1 and the corner Cx2 may be abolished. In this sense, in the present specification, they are called a quadrangular (rectangular) cross section and a quadrangular pyramid respectively including a rounded quadrangular cross section and a rounded quadrangular pyramid.

  As shown in FIGS. 3C and 3D, the cross section C1c is a rectangle defined by two center lines La1 and Li1 (La1 ≧ Li1) that are orthogonal to each other and bisect the partner. . Similarly, the cross section C2c is a rectangle defined by two center lines La2 (La1 <La2) and Li2 (Li1 <La2, La2 ≧ Li2). That is, the rectangles of the cross sections C1c and C2c include a square, but in the present invention, according to the illustrated example (La1> Li1, La2> Li2), the center lines La1 and La2 are collectively referred to as the major axis La, and the center line Li1. And Li2 are collectively referred to as short axis Li.

  The cross section C1c and the cross section C2c are preferably similar, and the sac bending direction Ds1c is parallel to the minor axis Li, but is not limited thereto. The cross section C1c and the cross section C2c are collectively referred to as a cross section Cc, and the corners Cx1 and Cx2 are collectively referred to as a corner Cx. In the present embodiment, as described above, the corner where the major axis La and the minor axis Li intersect is formed in a round corner Cx.

  The rectangular cylindrical peripheral wall (side peripheral portion) of the sac upper portion Sc1c faces the short axis Li (Li1, Li2) on the right side (the upper side in FIGS. 3C and 3D) when viewed in the sack bending direction Ds1c. The right peripheral wall WrR (upper right peripheral wall Wr1R, lower right peripheral wall Wr2R) and the left peripheral wall WrL (parallel to the short axis Li (Li1, Li2) on the left side (lower side in FIGS. 3C and 3D)) The upper left peripheral wall Wr1L, the lower left peripheral wall Wr2L), and the concave side peripheral wall Wrp (upper concave side peripheral wall) parallel to the major axis La on the projecting inner wall surface SWxc side (left side in FIGS. 3C and 3D) Wrlp, lower concave side peripheral wall Wr2p) and concave inner wall surface SWvc side (right side in FIGS. 3 (c) and 3 (d)), the projecting side peripheral wall Wrd parallel to the long axis La (upper projecting side peripheral wall Wr1d, lower projection) Divided into four regions with the side wall Wr2d) Rukoto can. The concave peripheral wall Wrp and the protruding peripheral wall Wrd are respectively the protruding inner wall surface SWxc side and the concave inner wall surface SWvc side when viewed from the inside of the sack body Scc.

(Modification)
Next, a finger sac Cf1c ′, which is a modification of the finger sac Cf1c, will be described with reference to FIGS. 3 (e) and 3 (f). Similar to the finger sac Cf1a ′ and Cf1b ′, the finger sac Cf1c ′ is configured in the same manner as the finger sac Cf1c except that a thick portion Wc is provided on the peripheral wall of the portion corresponding to the side of the finger. Has been. Therefore, regarding the appearance and the side cross-section of the finger sack Cf1c ′, FIG. 3A and FIG.

  The thick portion Wc is provided integrally or separately on the inner surface of at least one of the right peripheral wall WrR and the left peripheral wall WrL corresponding to the attached finger side, as in the above-described thick portions Wa and Wb. It may be provided, or may be provided integrally or separately on the outer surface of at least one of the right peripheral wall WrR and the left peripheral wall WrL. The thick portions Wa, Wb, and Wc are collectively referred to as the thick portion W. A modified example of the finger sac Cf1 typified by the above-described finger sac Cf1a ', Cf1b', and Cf1c 'is collectively referred to as a finger sac Cf1'.

<Embodiment 2>
Prior to detailed description with reference to FIG. 4, a finger sack Cf2 (not shown) according to Embodiment 2 of the present invention will be described. The finger sack Cf2 is provided with a raised portion B partially on the protruding inner wall surface SWx of the bent part F1 of the finger sack Cf1 according to the first embodiment described above at a position facing the belly of the attached finger. .

  More specifically, a raised portion B is provided on the protruding inner wall surface SWx side of the bent inner wall surface of the bent portion F1 of the finger sack Cf2 at a position facing the first joint of the attached finger. This is intended to suppress the movement of the finger sac Cf2 when the finger sack Cf2 is moved back and forth during the brushing operation, and the raised portion B comes into contact with the bent concave part (or the vicinity thereof) of the finger. . Note that the bending concave portion of the finger is the ventral side of the finger of the first joint. By suppressing the movement of the finger sack Cf2 in the front-rear direction with respect to the finger, the contact state of the finger sack Cf2 with respect to the object to be brushed is stabilized and the attachment / detachment contrary to the intention of the wearer is prevented. That is, it can be said that the holding power in the mounted state is improved.

Example 1
Next, with reference to FIG. 4, a toothpaste finger sack Cf2a (hereinafter, “finger sack Cf2a”) according to Example 1 of Embodiment 2 of the present invention will be described in detail. The finger sack Cf2a is provided with a raised portion Ba on the finger sack Cf1a (FIG. 1) according to Example 1 of the first embodiment.

  FIG. 4A shows a longitudinal section of the finger sack Cf2a as in FIG. 1B. As can be seen in the figure, the finger sack Cf2a is configured in the same manner as the above-described finger sac Cf1a except that the raised portion Ba is provided on the inner wall surface of the sack body Sca. Constituent elements unique to the finger sack Cf2a will be described with priority given to them by specific reference numerals. Constituent elements and features common to the finger sack Cf1a will be described for convenience of visibility and simplification of description. Unless otherwise required, illustration or explanation is omitted.

  The raised portion Ba protrudes on the protruding inner wall surface SWxa toward the concave inner wall surface SWva side, centering on a position that intersects with the diameter D (FIG. 4 (b)) substantially parallel to the sack bending direction Ds1a. Is provided. The raised portion Ba gradually increases in thickness from the end portion on the sack upper portion Sc1a side and the end portion on the sack lower portion Sc2a side toward the center, and forms the highest raised point Ps at the thickest point (FIG. 4A). ).

  With respect to the extending direction of the central axes L1a and L2a of the finger sack Cf2a, the raised part Ba is located on the sack upper part Sc1a (upper part of the bent part F1a) and the lower end is located on the sack lower part Sc2a (lower part of the bent part F1a). Yes. The highest bulge point Ps is located at the bent portion F1a (the central portion and the vicinity of the bent portion F1a). The distance from the inner wall surface of the sac body Sca to the highest bulge point Ps is defined as the highest bulge point height Hps.

  FIG. 4B shows a cross section C2s cut through the most protuberant point Ps on a plane along the line segment IVb-IVb (diameter D) perpendicular to the central axis L1a in FIG. 4A. In the figure, the raised portion Ba has a crescent shape symmetrical with respect to the diameter D parallel to the sac bending direction Ds1a intersecting the central axis L1a, preferably on the inner surface (projecting inner wall surface SWxa) of the concave peripheral wall Wvp. It is formed to have a cross-sectional shape.

  The protruding portion Ba has ends positioned on the right peripheral wall WpR and the left peripheral wall WpL in the circumferential direction of the finger sack Cf2a, and its thickness (distance from the protruding inner wall surface SWxa to the surface of the protruding portion Ba) and the highest protrusion The point height Hps is a maximum at the center of the concave peripheral wall Wvp, and forms a crescent-shaped contour that gradually decreases toward the end.

  When the angle formed by the line connecting the circumferential end of the raised portion Ba and the central axis L1a is “the raised portion extending angle θs”, the contour of the highest raised point height Hps is the raised portion Ba in the sack bending direction Ds1a. Centering on the parallel diameter D, it extends to the left and right in the circumferential direction by θs / 2. In addition, as will be described later, the protruding portion extension angle θs is preferably 180 ° or less.

FIG. 4C shows a state of the raised portion Ba viewed along the line segment IVb-IVb. In the figure, a two-dot chain line Bae indicates an outline when the raised portion Ba formed on the inner wall of the conical cylinder is developed on a plane. The raised portion Ba (hereinafter referred to as “the raised material Bae”) in a state of being developed in a plane is preferably a thick portion having a shape such that an elliptical outline and an elliptical long axis coincide with the highest raised point Ps. Are provided on the projecting inner wall surface SWxa. The length in the long axis direction of the raised material Bae is defined as “the raised material length Lpe”, and the long axis direction when the raised portion Ba (the raised material Bae provided on the projecting inner wall surface SWxa) is viewed in the sack bending direction Ds1a. Assuming that the interval between both end portions is “bump end portion interval LPs”, in the illustrated example, the following expressions (1) and (2) have a relationship.
Lpe = D · π · (θs / 360 °) (1)
Lps = sin {π · (θs / 360 °)} · D (2)

  Strictly speaking, the expressions (1) and (2) are based on the premise that the sac body Sca is a cylinder, but the sac body Sca is a conical cylinder, but since the inclination of the side surface is small, there is no practical problem. As shown in the formula (1), when the diameter D is constant (finger sack Cf2a of the same size), the raised material length Lpe becomes longer according to the raised portion extension angle θs. In other words, the longer the raised material length Lpe, the longer the circumferential length. As shown in Expression (2), when the diameter D is constant, the ridge end interval LPs increases according to the ridge extension angle θs, and is a maximum value when the ridge extension angle θs is 180 °. It becomes a certain diameter D and becomes smaller thereafter.

  In this embodiment, as illustrated in FIG. 4B, the raised portion Ba is symmetrical with respect to the sack bending direction Ds1a, and the raised portion extending angle θs is set to 180 ° or less.

  Then, as illustrated in FIG. 4A, the most protuberant point Ps is preferably located on the curved tip end portion Ra side from the bending point P1a. At the position (first joint) between the distal node and the middle node of the bent finger, the most raised point Ps of the protruding portion Ba that curves in a crescent shape so as to correspond to the outer shape of the finger The contact prevents the finger sack Cf2a from moving forward when the finger retracts during brushing. That is, it functions as a stopper that prevents the finger sack Cf2a from coming off the finger.

  Further, when the finger moves forward, the highest bulge point Ps abuts against the abdominal portion of the middle node, thereby preventing the finger sack Cf2a from moving backward, that is, a stopper that prevents the finger sack Cf2a from loosening. Function. In this sense, the raised portion Ba is also referred to as a stopper Ba.

  As described above, in the present embodiment, the raised portion extension angle θs is set to 180 ° or less. That is, when the inner wall surface of the bent portion F1a of the sack body Sca is divided into the projecting inner wall surface SWxa and the concave inner wall surface SWva, the stopper Ba is provided on the projecting inner wall surface SWxa.

  When the bulge extension angle θs exceeds 180 ° and the end of the stopper Ba is applied to the concave inner wall surface SWva, the maximum bulge point height Hps can be increased and the stopper function is improved. However, the resistance to deformation that occurs when the finger is bent larger than the sac bending angle θ1a or extended smaller during brushing increases. If the sac body Sca is bent to the sac bending angle θ1a or more against or against the increased resistance force, the sac body Sca is deteriorated or damaged.

  Further, the portions of the stopper Ba on the inner surfaces of the right peripheral wall WpR and the left peripheral wall WpL are unnecessary and useless members for the stopper function that do not come into contact with the abdomen of the terminal node of the finger.

  The stopper Ba does not need to be on the right peripheral wall WpR or the left peripheral wall WpL, but on the projecting inner wall surface SWxa (the inner surface of the concave peripheral wall Wvp) for contact with the abdomen of the end node part or the middle node part. It ’s fine. In this case, in order to secure the highest peak height Hps, the stopper Ba is not a crescent-shaped cross section, but is formed so that the highest peak Ps has an arcuate cross section (see FIG. 4C) having a linear contour. That's fine.

  However, when the highest bulge point Ps forms a straight outline, the highest bulge point Ps comes into contact with the middle node (finger) in a straight line, compared to the case where the highest ridge point Ps forms a crescent-shaped outline. A feeling of wearing is inferior. Furthermore, if the raised portion Ba satisfies the above-described function as a stopper, the raised material Bae does not necessarily need to have the long axis of the elliptical outline coincide with the highest raised point Ps. In order to satisfy the requirements of the property and design shape, it may be configured to have a contour other than the elliptical contour.

(Example 2)
Next, a toothpaste finger sack Cf2b (not shown) according to Example 2 of the second embodiment will be described. Toothbrushing finger sac Cf2b is provided with a raised portion (stopper) Bb (not shown) on finger sack Cf1b (FIG. 2) according to Example 2 of Embodiment 1 described above. The raised portion Ba is provided on the protruding inner wall surface SWxa of the conical sac body Sca having a circular cross section, whereas the raised portion Bb is protruded from the elliptical cone-shaped sac body Scb having an elliptical cross section. Except for the point provided on the inner wall surface SWxb side, it is the same as the finger sack Cf2a, and thus the description thereof is omitted together with the drawing.

(Example 3)
Next, a brushing finger sack Cf2c (not shown) according to Example 3 of the second embodiment will be described. Toothbrushing finger sac Cf2c is provided with a raised portion (stopper) Bc (not shown) on finger sack Cf1c (FIG. 3) according to Example 3 of Embodiment 1 described above. The raised portion Bb is provided on the protruding inner wall surface SWxb of the elliptical cone-shaped sac body Scb, whereas the protruding portion wall surface of the quadrangular pyramid-shaped sack body Scc has a rectangular cross section. Except for the point provided on the SWxc side, it is the same as the above-described finger sack Cf2b, and thus the description thereof is omitted together with the drawing.

<Embodiment 3>
Before detailed description with reference to the drawings, a finger sack Cf3 (not shown) according to Embodiment 3 of the present invention will be described. The finger sac Cf3 according to the third embodiment is the same as the finger sac Cf1 ′, which is a modification of the finger sac Cf1 described with reference to FIGS. 1 to 3, and includes the right peripheral wall WpR and the left peripheral wall WpL of the sac body Sc. A thick portion W provided on at least one inner surface is provided on at least one outer surface of the right peripheral wall WpR and the left peripheral wall WpL. Thereby, compared with the case where the thick part W is provided inside the sac main body Sc, the inner diameter size of the sac main body Sc is not impaired, and thus the restriction on the thickness of the thick part W can be eliminated.

Example 1
Next, with reference to FIG. 5, the toothpaste finger sack Cf3a according to Example 1 of Embodiment 3 of the present invention will be described in detail. FIG. 5 (a) shows the appearance of the finger sack Cf3a as seen from the lower right. FIG. 5B shows a side surface of the finger sack Cf3a when the left peripheral wall WpL is viewed from the front. As can be seen from the figure, the toothpick finger sac Cf3a is provided on the inner wall surface of the right peripheral wall WpR or the left peripheral wall WpL in the finger sac Cf1a ′ (FIG. 1) according to Example 1 of the first embodiment described above. Instead of the thick portion Wa, the thick portion W3a is provided on the outer wall surface of the right peripheral wall WpR or the left peripheral wall WpL so as to be continuous with the edge Efa at the lower end.

  5A and 5B show the thick portion W3a provided on the left peripheral wall WpL for convenience of drawing. In the present specification, an example in which the thick portion W3a is provided on the left peripheral wall WpL will be described based on the drawings. However, the thick portion W3a is provided on one or both of the left peripheral wall WpL and the right peripheral wall WpR. The good thing is as described above.

(Example 2)
Next, with reference to FIG. 6, the finger sack Cf3b according to Example 2 of the third embodiment will be described. FIG. 6A shows the appearance of the finger sack Cf3b viewed from the lower right. FIG. 6B shows a side surface of the finger sack Cf3b when the left peripheral wall WpL is viewed from the front. As can be seen from the figure, in the finger sack Cf3b, the thick part W3a in the above-described finger sack Cf3a (FIG. 5) is replaced with the thick part W3b. The thick part W3b is further provided with a thick part Wbp on the thick part W3a of the finger sack Cf3a. The thick portion Wbp is provided on the lower concave peripheral wall Wv2p of the sac body Sca, and the lower end portion is provided continuously with the edge Efa. That is, the thick part W3a and the thick part Wbp are connected by the edge Efa.

  This thick portion Wbp is a reinforcing portion for pressing with the thumb when the finger sack Cf3b is attached to the index finger or the middle finger. Basically, the finger sack Cf3b according to the present invention has a structure in which the first joint of the finger is caught in the shape and is difficult to come off from the attached finger, but it is bitten unexpectedly while brushing another person's teeth. In such a case, the finger sack Cf3b must be pulled out from the mouth of another person. By pressing the thick portion Wbp with the thumb, the wearability is further improved, and the thick portion Wbp can be pulled out from another person's mouth while being worn on the finger.

(Example 3)
Next, with reference to FIG. 7, a finger sack Cf3c according to Example 3 of the third embodiment will be described. FIG. 7A shows the appearance of the finger sack Cf3c as viewed from the lower right. FIG. 7B shows a side surface of the finger sack Cf3c when the left peripheral wall WpL is viewed from the front. As can be seen from the figure, the finger sack Cf3c has the thick part W3b in the above-described finger sack Cf3b (FIG. 6) replaced with a thick part W3c. In the thick portion W3b, the thick portion W3c is provided with a thick portion Wbv having a lower end continuous to the edge Efa on the lower projecting side peripheral wall Wv2d of the sack body Sca. That is, the thick part W3a, the thick part W3b, and the thick part W3c are connected by the edge Efa.

Example 4
Next, with reference to FIG. 8, a finger sack Cf3d according to Example 4 of Embodiment 3 will be described. FIG. 8A shows the appearance of the finger sack Cf3d viewed from the lower right. FIG. 8B shows the side surface of the finger sack Cf3d when the left peripheral wall WpL is viewed from the front. As can be seen from the figure, the finger sack Cf3d is replaced with a thick part W3d having a thick part W3a having an annular thick part W3dt and a thick side part W3ds in the above-described finger sack Cf3a (FIG. 5). Yes. The annular thick portion W3dt is formed in the upper concave side peripheral wall Wv1p and the upper projecting side peripheral wall Wv1d, mainly in the circumferential direction at a position near the curved tip portion Ra of the sack upper portion Sc1 or at a position overlapping the curved tip portion Ra. Is provided in a ring shape. From the lower end of the thick side portion W3ds, the thick side portion W3ds is provided in the same manner as the thick portion W3a. As described above, the thick side W3ds is provided on one or both of the left peripheral wall WpL and the right peripheral wall WeR.

  The thick portion W3a is provided on at least one of the left peripheral wall WpL and the right peripheral wall WeR, but is not provided on either the concave peripheral wall Wvp or the projecting peripheral wall Wvd. On the other hand, in the thick portion W3d, the sack upper portion Sc1 and the curved tip portion Ra are covered with the annular thick portion W3dt over the entire circumference. Since the end node part inserted into the sac upper part Sc1a is protected from the tooth tip to be brushed by the annular thick part W3dt over the entire circumference including not only the side part but also the abdominal side and the back side, Bend your fingers more freely and brush safely.

  This annular thick portion W3dt is also for protecting the user's finger when bitten by another person while brushing another person's teeth. In particular, the fingertip wearing the finger sack Cf3d is inserted to a portion close to the back teeth in the mouth of another person. Since the back teeth have the strongest masticatory force, the annular thick portion W3dt is suitable for protecting the user's finger.

  Note that the annular thick portion W3dt may be provided in the entire region of the sack upper portion Sc1a or in a portion near the curved tip portion Ra or near the sack lower portion Sc2a depending on the degree of demand for protection of the side peripheral portion of the end node portion. Good. In addition, the resistance with respect to the bending | flexion of the finger | toe at the time of mounting | wearing becomes large, so that the distance with sack lower part Sc2a becomes small.

(Example 5)
Next, with reference to FIG. 9, a finger sack Cf3e according to Example 5 of Embodiment 3 will be described. FIG. 9A shows the appearance of the finger sack Cf3e as viewed from the lower right. FIG. 9B shows the side surface of the finger sack Cf3e when the left peripheral wall WpL is viewed from the front. As can be seen from the figure, in the finger sack Cf3e, the thick part W3d in the above-described finger sack Cf3d (FIG. 8) is replaced with the thick part W3e. In the thick part W3e, the thick part W3d is provided with the thick part W3b of the finger sack Cf3b (FIG. 6). In other words, the thick part W3a is replaced with the thick part W3d (FIG. 8) in the finger sack Cf3b.

(Example 6)
Next, with reference to FIG. 10, a finger sack Cf3f according to Example 6 of the third embodiment will be described. FIG. 10A shows the appearance of the finger sack Cf3f as seen from the lower right. FIG. 10B shows a side surface of the finger sack Cf3f when the left peripheral wall WpL is viewed from the front. As can be seen from the figure, the finger sack Cf3f has the thick part W3e replaced with the thick part W3f in the above-described finger sack Cf3e (FIG. 9). In the thick part W3f, the thick part W3e is provided with the thick part Wbp of the finger sack Cf3c (FIG. 7). In other words, the thick part W3a is replaced with the thick part W3d (FIG. 8) in the finger sack Cf3c.

(Example 7)
Next, with reference to FIG. 11, a finger sack Cf3g according to Example 7 of Embodiment 3 will be described. FIG. 11A shows the appearance of the finger sack Cf3g as viewed from the lower right. FIG. 11B shows the side surface of the finger sack Cf3g when the left peripheral wall WpL is viewed from the front. As can be seen from the figure, the finger sack Cf3g has the thick part W3f replaced with the thick part W3g in the above-described finger sack Cf3f (FIG. 10). The thick part W3g is provided with a tip thick part W3r on the upper part of the annular thick part W3dt so as to cover the curved tip part Ra of the sac body Sca. Thereby, not only the side periphery but the front-end | tip part is protected more as well as the attached end node part.

(Example 8)
Next, with reference to FIG. 12, a finger sack Cf3h according to Example 8 of Embodiment 3 will be described. FIG. 12A shows the external appearance of the finger sack Cf3h as viewed from the lower right. FIG. 12B shows a side surface of the finger sack Cf3h when the left peripheral wall WpL is viewed from the front. As can be seen from the figure, the finger sack Cf3h has the thick part W3h replaced with the thick part Wbh in the above-described finger sack Cf3g (FIG. 11). The thick portion Wbh is provided with a tip thick portion W3r on the upper portion of the annular thick portion W3dt so as to cover the curved tip portion Ra of the sac body Sca. Thereby, not only the side periphery but the front-end | tip part is protected more as well as the attached end node part. Further, the thick part Wbh is further provided with a thick part Wbp of the finger sack Cf3c (FIG. 7).

  In addition, the thick part shown to FIGS. 5-12 may be comprised with the material harder than a sack main body. That is, the finger sack according to the present invention needs to have flexibility. However, the hardness of the sac body and the thick part may be different. For example, silicone can freely bond a substituent to the main skeleton by a siloxane bond. The hardness of the material can be changed by changing the type of the substituent. Therefore, the sac body and the thick part can be formed of materials having different hardnesses.

<Embodiment 4>
Example 1
With reference to FIG. 13, the finger sack Cf4a according to Example 1 of the fourth embodiment will be described. FIG. 13A is a side cross-sectional view (left peripheral wall) of the finger sack Cf4a, and FIG. 13B is a diagram viewed from the projecting peripheral wall Wvd side. The finger sack Cf4a is provided with the brush portion Br on the finger sack Cf1a described in the first embodiment. In the finger sack Cf4a, the brush portion Br is configured by a needle-like protrusion Brn having flexibility. The needle-like protrusion Brn is provided from the upper concave side peripheral wall Wv1p of the finger sack Cf4a to the apex Rt of the curved distal end R.

  The needle sac Cf4a is provided integrally with the needle-like protrusion Brn by the same material as the finger sac Cf4a. That is, there is no portion where the material becomes discontinuous between the finger sack Cf4a and each needle-like protrusion Brn. This can be manufactured by simultaneously forming the needle-like protrusion Brn when the finger sack Cf4a is formed by injection molding.

  However, it does not exclude that the needle-like protrusion Brn is implanted later on the finger sack Cf4a. Therefore, after the finger sac Cf4a is formed, the needle-like protrusions Brn formed of the same material or different materials may be implanted in a predetermined portion of the finger sack Cf4a.

  When the needle-like protrusion Brn is provided, it becomes easier to remove foreign matters when brushing teeth and gums with the finger sack Cf4a. Further, if the needle-like protrusion Brn is provided on the upper concave side peripheral wall Wv1p and the finger sac Cf4a is inserted into the index finger or the middle finger, the teeth and gums in the mouth can be cleaned while feeling with the fingertip having the best sense.

  Further, when the needle-like protrusion Brn is provided up to the top part Rt of the curved tip part R, the needle-like protrusion Brn reaches not only the belly of the fingertip but also the tip indicated by the fingertip, and it is possible to clean the fine part in the mouth. Become.

(Example 2)
FIG. 14 shows a finger sack Cf4b according to Example 2 of the fourth embodiment. FIG. 14A is a side sectional view (left peripheral wall) of the finger sack Cf4b, and FIG. 14B is a view as seen from the concave peripheral wall side. . The finger sac Cf4b is different from the finger sac Cf4a in the formation of the needle-like protrusion Brn. The finger sack Cf4b is provided with a needle-like protrusion Brn from the upper concave side peripheral wall Wv1p to the apex Rt of the curved distal end R. The finger sack Cf4b may be used by inserting the finger sack Cf4b so that the belly of the fingertip hits the upper concave peripheral wall Wv1p. However, the finger sack Cf4b can be inserted and used so that the tip of the fingertip hits the upper protruding side peripheral wall Wv1d.

  Thus, by inserting the finger sack Cf4b so that the finger bends in the direction opposite to the sack bending direction Ds1a, the resistance between the finger sack Cf4b and the finger increases. When the teeth or gums are rubbed with the needle-like protrusion Brn, the frictional force increases, but the finger sac Cf4b is inserted into the finger sac Cf4b so that the finger bends in the direction opposite to the sac bending direction Ds1a of the finger sac Cf4b. Never get out of it.

(Example 3)
FIG. 15 shows a finger sack Cf4c according to Example 3 of the fourth embodiment. 15A is a view of the finger sack Cf4c as viewed from the concave peripheral wall Wvp side, FIG. 15B is a side cross-sectional view (left peripheral wall), and FIG. 15C is a protruding peripheral wall Wvd. It is the figure seen from the side. The finger sac Cf4c has a needle-like protrusion Brn that extends from the upper protrusion-side peripheral wall Wv1d to the top portion Rt of the curved distal end R to the upper concave-side peripheral wall Wv1p. Therefore, the finger sack Cf4c has the effects of the finger sack Cf4a and the finger sack Cf4b at the same time.

Example 4
FIG. 16 shows a finger sack Cf4d according to Example 4 of the fourth embodiment. FIG. 16A is a view as seen from the concave peripheral wall Wvp side of the finger sack Cf4d, FIG. 16B is a side sectional view (left peripheral wall WpL), and FIG. 16C is a protruding peripheral wall. It is the figure seen from the Wvd side. In the finger sac Cf4d, the needle-like protrusion Brn is provided not only on the upper protruding peripheral wall Wv1d, the apex Rt of the curved distal end R, and the upper concave peripheral wall Wv1p, but also on the upper right peripheral wall We1R and the upper left peripheral wall We1L. Thus, by providing the needle-like protrusions Brn on the left and right upper side peripheral walls, the brush portion Br can be slid to the cleaning target portion regardless of the angle of the finger to be put in the mouth. It is provided in the vertical direction on each side of the quadrangle in FIG.

(Example 5)
FIG. 17 shows a finger sack Cf4e according to Example 5 of the fourth embodiment. FIG. 17A is a side cross-sectional view (left peripheral wall) of the finger sack Cf4e, and FIG. 17B is a cross-sectional view taken along the AA plane in FIG. In the finger sac Cf4e, needle-like protrusions Brn are evenly provided radially from the central axis L1a on the sack upper part Sc1a.

(Example 6)
FIG. 18 shows a finger sack Cf4f according to Example 6 of the fourth embodiment. 18A is a side cross-sectional view (left peripheral wall WpL) of the finger sack Cf4f, and FIG. 18B is a view as viewed from the concave peripheral wall Wvp side. In the finger sack Cf4f, the brush portion Br is configured by the needle-like protrusion Brn and the block protrusion Brb. The block protrusion Brb is a protrusion that is thicker than the needle-like protrusion Brn. The tip of the block protrusion Brb is formed flat. However, it does not exclude forming in an uneven shape.

  Since the block protrusion Brb is thicker than the needle-like protrusion Brn, the block protrusion Brb is strong and has a high scuffing effect. Therefore, even secretions adhered to the teeth can be scraped off.

(Example 7)
FIG. 19 shows a finger sack Cf4g according to Example 7 of the fourth embodiment. FIG. 19A is a side cross-sectional view (left peripheral wall WpL) of the finger sack Cf4g, and FIG. 19B is a view seen from the protruding peripheral wall Wvd side. The finger sack Cf4g has a block protrusion Brb provided on the upper protruding side peripheral wall Wv1d. As shown in FIGS. 18 and 19, the block protrusion Brb can be provided on either side.

  FIG. 20 illustrates a variation in the shape of the needle-like protrusion Brn. In FIG. 20 (a), the needle-like protrusion Brn has a needle shape with a sharp tip. In FIG.20 (b), the front-end | tip is formed in semicircle shape. In FIG.20 (c), the front-end | tip has a flat shape and the cross section is square shape. In FIG. 20 (d), the needle-like protrusion Brn has a track shape with a flat cross section, and the tip is formed in a flat spatula state.

  In FIG. 20 (e), the needle-like protrusion Brn has a track shape with a flat cross section, and the tip has a curved surface. In FIG. 20 (f), the needle-like protrusion Brn has a flat tip and a rectangular cross section. In FIG. 20 (g), the needle-like protrusion Brn has a cross-sectional shape in which two circular shapes are connected with a rectangle, and the tip is formed in a round shape.

  In FIG. 20 (h), the needle-like protrusion Brn has a crescent-shaped cross section, and the tip is formed in a round shape. In FIG. 20 (i), the needle-like protrusion Brn has a hexagonal cross section and a flat tip. In addition, although the cross section is hexagonal in FIG.20 (i), another polygonal shape may be sufficient.

  Further, the finger sack Cf4 having the brush part Br shown in FIGS. 13 to 19 has been described with the shape in which the brush part Br is provided on the finger sack Cf1a of FIG. 1, but is shown in FIGS. You may provide the brush part Br in finger sack Cf2 thru | or Cf3 of each shape.

<Embodiment 5>
In the toothpaste finger sack according to the fifth embodiment, an antibacterial agent and a deodorant are added to the flexible material constituting the finger sack. A toothpaste finger sack is used directly in the mouth of an animal or human. Therefore, it directly touches the saliva and mucous membrane in the oral cavity. Since many germs survive in the oral cavity, these germs also adhere to the toothpaste finger sack. Then, during use, germs may propagate on the surface of the toothpaste finger sack. In particular, since silicone has fine holes on its surface, various germs may propagate in the holes and give off a bad odor.

  Therefore, by incorporating an antibacterial agent or deodorant into the sac body of the toothpaste finger sac, it is possible to suppress the propagation of germs and prevent the generation of malodor.

  The shape of the toothpaste finger sack according to the fifth embodiment may take any shape of the toothpaste finger sack described and exemplified so far. Further, it may be kneaded into any of the sac body, the thick part, the annular thick part, and the brush part. It is most desirable if it is kneaded into all of the sack body, thick part, annular thick part, and brush part.

  Further, the antibacterial agent or deodorant may be simply carried on the surface of the toothpaste finger sack. In addition, when carrying an antibacterial agent or a deodorant, means, such as application | coating and a spray coat, can be utilized suitably. Therefore, the fact that the toothpaste finger sac has an antibacterial agent or deodorant means that the antibacterial agent or deodorant is kneaded into, carried on, or otherwise retained in the toothpaste finger sack material. Including.

  Many types of antibacterial agents are known, including inorganic materials and organic materials. The antibacterial agent that can be used for the toothpaste finger sac is desirably one that has little influence on the living body. Therefore, the antibacterial agent which uses metals, such as silver and copper, as a main raw material can be utilized suitably. What carried these metal fine powders on a porous ceramic material is preferably used, and the effect is also remarkable.

  Moreover, titanium oxide which is a photocatalyst can also be used suitably. Titanium oxide can be a powerful catalyst for redox, and can inhibit the growth of microorganisms such as bacteria and mold.

  The organic material-based antibacterial agent is preferably derived from natural products. This is because the influence on the living body is considered to be small. Examples include chitin / chitosan, propolis, polylysine, tea catechin and the like. Further, plant-derived antibacterial agents such as terpenoids and flavonoids may be used.

  As the deodorant, those that chemically adsorb the odor source and those that physically adsorb can be used. A fine porous material is desirable because it has a deodorizing effect by physical adsorption. For example, it is preferable to use aluminum oxide or zirconium oxide that is made porous to form a fine powder. Carbon powder may also be used.

  Many are known to exert a deodorizing effect by chemisorption, but here too, a material that does not affect the living body is desirable. For example, plant-derived substances having functional groups such as a carboxyl group (—COOH), an aldehyde group (—COH), and a hydroxyl group (—OH) are mainly hydrogen sulfide and methyl mercaptan, which are the source of malodors generated in the oral cavity. It has a deodorizing effect. These substances may not be a single substance, but may be a mixture of a plurality of substances.

  Both antibacterial agents and deodorants may be used. In addition, since flavonoid materials such as catechin have both an antibacterial effect and a deodorizing effect, the antibacterial and deodorizing effects can be obtained simultaneously. Thus, a material that satisfies the antibacterial and deodorizing effects at the same time may be used.

  In the case of manufacturing a toothpaste finger sack with silicone rubber, an antibacterial agent or deodorant is mixed and kneaded into the silicone material to be used as a pre-molding material. The proportion of the antibacterial agent or deodorant mixed as an additive is about 0.01 to 30 parts by weight, preferably 0.1 to 5 parts by weight with respect to the silicone material. The hardness of the silicone material varies depending on the substituent bonded to the main chain of the siloxane bond. Even so, if anything other than 30 parts by weight or more of the silicone material is mixed, the strength of the finished product is lowered.

  The toothpaste finger sack according to the present invention can be used not only for brushing pet teeth and gums but also for humans who need assistance.

Cf1 finger sack Sc sack body O opening R curved tip F1 bent part P1 bent point Sc1 sack upper part Sc2 sack lower part L1 central axis L2 central axis θ1 sack bending angle Ds1 sack bending direction B raised part W thick part

Claims (11)

One end is closed by a curved tip, an opening is provided at the other end, and is constituted by a cylindrical main body formed of a flexible material.
The toothpaste finger sack, wherein the main body has at least one bent portion between the opening and the curved tip portion. The toothpaste finger sack according to claim 1, wherein a raised portion is provided on an inner wall surface (protruding inner wall surface) of the bent portion.   The toothpaste finger sack according to claim 1, wherein a brush tip is provided at a curved distal end of the toothpaste finger sack.   4. A thick wall portion provided in a band shape from the opening to the curved tip end portion is provided on a side peripheral wall of the main body, according to any one of claims 1 to 3. Toothpaste finger sack.   The toothpaste finger sack according to claim 4, further comprising an annular thick portion provided around the main body.   The toothpaste finger sack according to any one of claims 1 to 3, wherein the main body has an oval cross section when cut along a plane perpendicular to a center line.   The toothpaste finger sack according to any one of claims 1 to 3, wherein the main body has a quadrangular cross section when cut by a plane perpendicular to a center line.   The toothpaste finger sack according to claim 1, wherein a maximum inner diameter of the upper portion of the toothpaste finger sack is smaller than a maximum inner diameter of the lower portion of the toothpaste finger sack.   The toothpaste finger sack according to any one of claims 1 to 8, wherein the main body contains at least one of an antibacterial agent and a deodorant.   The toothpaste finger sack according to claim 4, wherein the thick portion is made of a material harder than the main body.   The toothpaste finger sack according to claim 5, wherein the annular thick portion is made of a material harder than the main body.