JP2017158943A - Interdental cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an interdental cleaning device that can enhance insertability of floss between molar teeth interdentally.SOLUTION: The interdental cleaning device (1) has floss and a body (3) that holds the floss. The body (3) includes a handle part (10) and an arm part (60) having a pair of supports (62). The arm part (60) is provided with a curved shape so as to be projecting toward one side in the height direction. The handle part (10) is provided with a grip section (20) to be gripped with fingers and a connection section (30), where the size of the grip section (20) in the height direction is larger than the size of the connection section (30) in the height direction. The arm part (60) has a back slope (64) that inclines gradually toward one side in the height direction as it recedes from the connection section (30).SELECTED DRAWING: Figure 1

Description

  The present invention relates to an interdental cleaning tool including a floss.

  2. Description of the Related Art Conventionally, interdental cleaning tools suitable for cleaning between teeth between back teeth are known. For example, Patent Document 1 discloses an interdental cleaning tool including a floss and a handle that holds the floss. The handle includes a grip portion as a handle having a shape extending along a specific direction, an arm portion having a floss holding portion for holding the floss, and a first knob portion and a second knob portion provided on the grip portion. And have. The floss holding part holds the floss in a state facing the width direction orthogonal to the specific direction. The 1st pick part is connected to the stomach side of the grip part, and has the shape which can be picked with a finger. The second knob portion connects the grip portion and the arm portion. The back surface of the second knob has a shape that gradually inclines toward the stomach side of the grip as it goes from the grip side to the arm side.

  In such an interdental cleaning tool, for example, the floss is inserted between the back teeth in the following manner. First, the handle is held so that the index finger is brought into contact with the back surface of the second knob portion while the first knob portion is held between the thumb and the middle finger. Then, after the floss is positioned between the back teeth in this state, the back surface of the second knob portion is pressed with the index finger toward the abdominal side (interdental side) of the grip portion. Thereby, the floss is inserted between the teeth of the back teeth.

JP 2013-244117 A

  The interdental cleaning tool as described in Patent Document 1 has room for improvement in the floss insertion property between the back teeth. Specifically, when the floss is inserted between the teeth while holding the handle as described above, a force that rotates the handle around the first knob is applied by the index finger. Since it is difficult to determine the relative position of the index finger with respect to the middle finger (held portion), it is difficult to secure a pressing force with the index finger.

  The objective of this invention is providing the interdental cleaning tool which can improve the insertion property of the floss between back teeth.

  As means for solving the above-mentioned problems, the present invention is an interdental cleaning tool comprising a floss capable of cleaning between teeth and a main body holding the floss, and the main body is in a specific direction. An arm portion having a handle portion having an extending shape and a pair of support portions connected to one end portion of the handle portion in the specific direction and supporting the floss in a state of being opposed to a width direction orthogonal to the specific direction. And the arm portion has a shape curved so as to be convex toward one side in a height direction orthogonal to both the specific direction and the width direction, and the handle portion is A clamped portion that is clamped with fingers from both sides in the width direction, and a connecting portion that connects the arm portion and the gripping portion, and the dimension of the clamped portion in the height direction is the height From the dimensions of the connecting part in the direction Large, the arm portion has a back side inclined section which is inclined gradually toward the one side in the height direction as the distance from the connecting part, providing a interdental cleaner.

  In this interdental cleaning tool, since the arm portion has a back-side inclined portion, the holding portion is sandwiched between the thumb and the middle finger and the index finger is placed on the connecting portion while the index finger is placed on the connecting portion in the height direction. When the index finger is pressed toward the other side, the index finger is brought into contact with the back inclined portion, whereby the index finger is restricted from moving toward the arm portion. Therefore, since the positional relationship between the three fingers of the thumb, the index finger, and the middle finger when the hand is held is defined, the pressing force of the connecting portion by the index finger is effectively ensured. Therefore, the insertion property of the floss between the back teeth is enhanced.

  In this case, the sandwiched portion has a back-side bulging portion that is formed on one side in the height direction and has a shape that curves so as to protrude toward the one side in the height direction. Is preferred.

  If it does in this way, clamping of a to-be-clamped part will become easy.

  Further, in this case, the distance from the reference straight line to the top of the arm part is greater than the distance from the reference straight line parallel to the specific direction and passing through the sandwiched part to the top of the back bulge part. Larger is preferred.

  In this way, the displacement of the index finger toward the arm when the hand is held is more reliably regulated.

  Further, in the interdental cleaning tool, an outer surface of the sandwiched portion in the width direction has a shape curved so as to be convex inward in the width direction, and the back bulge portion It is preferable that the top portion is located closer to the arm portion than the narrow portion having the smallest dimension in the width direction among the sandwiched portions.

  In this way, when the hand is held, the index finger is more easily positioned on the arm portion side than the positions of the thumb and middle finger. Specifically, since the outer surface of the sandwiched portion is curved so as to be convex inward in the width direction, when the sandwiched portion is sandwiched between the thumb and the middle finger, these fingers are held by the sandwiched portion. Are guided to the narrow part having the smallest dimension in the width direction. Moreover, since the top part of the back side bulging part is located on the arm part side from the narrow part, the index finger placed on the connecting part is closer to the arm part side than the thumb and middle finger located in the narrow part. Guided to be located. Therefore, since the index finger position (power point) is separated from the thumb and middle finger positions (fulcrum points) holding the narrow portion toward the arm portion, it is easy to secure the force when inserting the floss between the teeth.

  In the interdental cleaning tool, the handle portion further includes a finger hook portion that is connected to an end portion on the opposite side to the connecting portion side of the sandwiched portion with respect to the specific direction and is used to hang a finger. It is preferable.

  If it does in this way, the cleaning between the teeth by the holding method which pinches the handle part from the both sides in the height direction by the index finger and the middle finger and the thumb becomes easy. Specifically, the index finger is placed on one surface in the height direction of the connecting portion, and the middle finger is placed on one surface in the height direction of the finger hanging portion (the index finger and the middle finger are placed on the handle portion). Of the handle part, and with the index finger in the way of holding the thumb in contact with the other side of the handle in the height direction, the connecting part is pointed to the other side in the height direction. By pressing, the force for inserting the floss between the teeth is secured. Therefore, since the pressing force of the connecting portion by the index finger is effectively ensured even in this way of holding, the floss insertion property between the back teeth is enhanced.

  In this case, the sandwiched portion has a ventral bulge portion that is formed on the other side in the height direction and has a shape that curves so as to protrude toward the other side in the height direction. The top of the ventral bulge is preferably located on the opposite side of the arm from the top of the back bulge.

  In this mode, when the handle part is held in such a way that the handle part is sandwiched from both sides in the height direction by the index finger and the middle finger and the thumb, the index finger position (power point) is changed from the thumb position (fulcrum) to the arm part side. Therefore, the force for inserting the floss between the teeth is more reliably ensured.

  Further, in the interdental cleaning tool, the connecting portion is formed on the other side in the height direction, and has a ventral concave portion having a shape curved so as to be convex toward the one side in the height direction. It is preferable to have.

  In this aspect, when the handle portion is held in such a way that the handle portion is sandwiched from both sides in the height direction by the index and middle fingers and the thumb, the thumb arm portion is restrained by the ventral recess. Since the displacement to the side is regulated, the force when inserting the floss between the teeth is more reliably ensured.

  In this case, the connecting portion has a back-side recess formed on one side in the height direction and curved so as to be convex toward the other side in the height direction. It is preferable that the bottom part of the side recess is located closer to the arm part than the bottom part of the ventral recess.

  In this way, the index finger position (force point) that contacts the dorsal recess is separated from the position (fulcrum) of the thumb that contacts the ventral recess to the arm side, so the pressing force of the connecting portion by the index finger is effective. Secured.

  In the interdental cleaning tool, it is preferable that a dimension of the connecting portion in the width direction and a dimension of the finger hook portion in the width direction are larger than a dimension of the sandwiched portion in the width direction, respectively.

  In this way, when the handle portion is held in such a way that the handle portion is sandwiched from both sides in the height direction by the index finger and the middle finger and the thumb, the index finger and the middle finger can be received in a relatively large area. Rotation around an axis parallel to the specific direction is suppressed.

  As described above, according to the present invention, it is possible to provide an interdental cleaning tool that can improve the insertion of floss between the back teeth.

It is a perspective view of the interdental cleaning tool of one Embodiment of this invention. It is a front view of an interdental cleaning tool. It is a top view of an interdental cleaning tool. It is sectional drawing in the IV-IV line of FIG. It is an end elevation in the VV line of FIG. FIG. 4 is an end view taken along line VI-VI in FIG. 3. It is an end view in the VII-VII line of FIG. It is a figure which shows the 1st lower jaw cleaning holding method. It is a figure which shows the 2nd mandibular cleaning holding method. It is a figure which shows how to hold an upper jaw.

  An interdental cleaning tool 1 according to an embodiment of the present invention will be described with reference to FIGS. The interdental cleaning tool 1 includes a floss 2 (see FIG. 3) and a main body 3.

  The floss 2 is composed of a plurality of fibers. In the present embodiment, the floss 2 is composed of four multifilaments. Each multifilament is made by twisting 66 monofilaments. The floss 2 is made of polyethylene.

  The main body 3 holds the floss 2. In the present embodiment, the main body 3 is made of a synthetic resin. Specifically, homopolymer polypropylene is used as the synthetic resin. In addition, as said synthetic resin, other resins, such as a polystyrene, polyethylene, ABS, a polycarbonate, a polybutylene terephthalate, may be used, for example. The main body 3 has a handle portion 10 and an arm portion 60.

  The handle part 10 has a shape extending along a specific direction. Hereinafter, the specific direction (longitudinal direction of the handle portion 10) is referred to as “axial direction”. Moreover, although the attitude | position at the time of use of this interdental cleaning tool 1 is not ask | required, below, as shown in FIG. 3, the direction orthogonal to an axial direction is defined as a width direction, and as shown in FIG. The direction perpendicular to both the axial direction and the width direction is defined as the height direction.

  The arm part 60 is connected to one end part of the handle part 10 in the axial direction. The arm portion 60 has a pair of support portions 62 that support the floss 2 in a state of facing the width direction orthogonal to the axial direction. The pair of support parts 62 is provided at the tip part of the arm part 60 (the end part opposite to the handle part 10 side).

  The arm portion 60 has a shape that curves so as to protrude toward one side in the height direction (a direction orthogonal to both the axial direction and the width direction). Hereinafter, one side in the height direction is referred to as the back side, and the other side in the height direction is referred to as the ventral side. The arm portion 60 has a back side inclined portion 64 that is inclined with respect to the axial direction of the handle portion 10. Specifically, the back-side inclined portion 64 has a shape that gradually inclines away from the central axis of the handle portion 10 toward one side (back side) in the height direction as it is separated from the handle portion 10. ing. The distal end portion of the arm portion 60 has an end surface parallel to a plane orthogonal to the height direction.

  In the present embodiment, the dimension H between the end surface of the distal end portion of the arm portion 60 and the top portion 60a of the arm portion 60 in the height direction is 11.77 mm. A dimension W between the outer surface of one support portion 62 and the outer surface of the other support portion 62 in the width direction is 19.8 mm. The dimension L in the axial direction of the main body 3 including the arm part 60 is 86.78 mm. Note that a gate mark 68 exists in the back-side inclined portion 64.

  The handle part 10 includes a sandwiched part 20, a connecting part 30, and a finger hanging part 40.

  The sandwiched portion 20 is a portion that is sandwiched by fingers (for example, thumb and middle finger) from both sides in the width direction. As shown in FIGS. 1 and 3, the outer surface of the sandwiched portion 20 in the width direction has a shape that curves so as to be convex inward in the width direction. An anti-slip portion is provided on the outer surface of the sandwiched portion 20.

  The sandwiched portion 20 includes a back bulge portion 22 and a ventral bulge portion 24.

  The back-side bulging portion 22 is formed on one side (back side) in the height direction and has a shape that curves so as to be convex toward the one side (back side). As shown in FIGS. 2 and 3, the top portion 22 a of the back-side bulging portion 22 is located closer to the arm portion 60 than the narrow portion 21 having the smallest dimension in the width direction of the sandwiched portion 20. . As shown in FIG. 2, the top 60 a of the arm portion 60 from the reference straight line A is larger than the distance d 1 from the reference straight line A parallel to the axial direction and passing through the sandwiched portion 20 to the top 22 a of the back-side bulged portion 22. The distance d2 is larger.

  The ventral bulging portion 24 is formed on the other side (belly side) in the height direction, and has a shape that curves so as to be convex toward the other side (belly side). The top 24 a of the ventral bulging portion 24 is located on the side opposite to the arm 60 side from the top 22 a and the narrow portion 21 of the back bulging portion 22. As shown in FIG. 2, the distance d4 from the reference straight line A to the end surface of the distal end portion of the arm part 60 is larger than the distance d3 from the reference straight line A to the top 24a of the ventral bulge part 24.

  As shown in FIG. 5, the cross section of the narrow portion 21 in a plane orthogonal to the axial direction has a substantially rectangular shape in which the dimension w5 in the width direction is smaller than the dimension h5 in the height direction. In the present embodiment, the width direction dimension w5 of the narrow portion 21 is 3.5 mm, and the height direction dimension h5 is 8.79 mm.

  The connecting part 30 connects the arm part 60 and the sandwiched part 20. As shown in FIGS. 1 to 3, the back surface (back surface in the height direction) of the connecting portion 30 and the back surface of the arm portion 60, the abdominal surface (the abdominal surface in the height direction) and the arm of the connecting portion 30. The abdominal surface of the portion 60, the outer surface of the connecting portion 30, and the outer surface of the arm portion 60 are connected so as to be smoothly continuous. Similarly, the back surface of the connecting portion 30 and the back surface of the sandwiched portion 20, the abdominal surface of the connecting portion 30 and the abdominal surface of the sandwiched portion 20, and the outer surface of the connecting portion 30 and the outer surface of the sandwiched portion 20 are smooth. It is connected continuously. As shown in FIG. 3, the outer side surface of the connecting portion 30 has a shape that curves so as to protrude outward in the width direction.

  The connecting portion 30 has a back side recess 32 and a ventral side recess 34.

  The back-side recess 32 is formed on one side (back side) in the height direction and has a shape that curves so as to be convex toward the other side (belly side) in the height direction. As shown in FIGS. 2 and 3, the bottom portion 32 a of the back-side recess 32 (the portion that is most recessed on the abdomen side of the back-side recess 32) has a wide front side width that is the largest in the width direction of the connecting portion 30. It is located closer to the arm part 60 than the part 31. As shown in FIG. 3, the dimension of the front wide part 31 in the width direction is larger than the dimension of the narrow part 21 in the same direction.

  The ventral recess 34 is formed on the other side (belt side) in the height direction, and has a shape that curves so as to protrude toward one side (back side) in the height direction. As shown in FIGS. 2 and 3, the bottom 34 a of the abdominal recess 34 (the most recessed part of the abdomen recess 34 on the back side) is on the opposite side of the front wide portion 31 from the arm 60 side. It is located on the (held portion 20 side).

  As shown in FIG. 6, the cross section of the front wide portion 31 in a plane orthogonal to the axial direction has a shape in which the dimension w6 in the width direction is larger than the dimension h6 in the height direction. In the present embodiment, the width w6 of the front wide portion 31 is 7.9 mm, and the height h6 is 3.11 mm.

  The finger hanging part 40 is a part where a finger is hung. The finger-hanging part 40 is connected to the end of the sandwiched part 20 opposite to the connecting part 30 side in the axial direction. As shown in FIGS. 1 to 3, the back surface of the finger hanging portion 40 and the back surface of the sandwiched portion 20, the abdominal surface of the finger hanging portion 40 and the abdominal surface of the sandwiched portion 20, and the outer surface of the finger hanging portion 40 and the sandwiched portion 20. The outer surfaces of each are connected so as to be smoothly continuous. As shown in FIG. 3, the outer side surface of the finger hanging portion 40 has a shape that curves so as to protrude outward in the width direction. The dimension in the width direction of the rear wide part 41 having the largest dimension in the width direction among the finger hanging parts 40 is larger than the dimension of the narrow part 21 in the same direction.

  The finger hanging portion 40 includes a back side finger hanging portion 42 and a ventral side finger hanging portion 44. The dorsal finger-hanging portion 42 is formed on one side (back side) in the height direction and has a shape that curves so as to be convex toward the other side (belly side) in the height direction. The ventral finger-hanging portion 44 is formed on the other side (belly side) in the height direction, and has a shape that curves so as to protrude toward one side (back side) in the height direction.

  As shown in FIG. 7, the cross section of the rear wide portion 41 in a plane orthogonal to the axial direction has a shape in which the dimension w7 in the width direction is larger than the dimension h7 in the height direction. In the present embodiment, the width w7 of the rear wide portion 41 is 8 mm, and the height h7 is 3.36 mm.

  Next, how to hold and use the interdental cleaning tool 1 will be described with reference to FIGS. 8 to 10 show examples of how to hold the interdental cleaning tool 1. Specifically, FIG. 8 shows a first way of cleaning the lower jaw, FIG. 9 shows a way of holding the second lower jaw, and FIG. 10 shows a way of cleaning the upper jaw. Hereinafter, the first lower jaw cleaning holding method, the second lower jaw cleaning holding method, and the upper jaw cleaning holding method will be described in this order.

  The first lower jaw cleaning holding method is a holding method in which the clamped portion 20 is held between the thumb f1 and the middle finger f3 and the index finger f2 is placed on the back surface of the connecting portion 30. This holding method is suitable for cleaning between the back teeth of the lower jaw. Specifically, the insertion method between the teeth of the floss 2 in the first mandibular cleaning method is as follows. First, the floss 2 is positioned between the back teeth of the lower jaw while holding the handle portion 10 in the first way of cleaning and holding the lower jaw. Then, the back side recessed part 32 of the connection part 30 is pressed toward the abdominal side (interdental side) of a height direction with the index finger f2. Thereby, the floss 2 is inserted between the teeth of the back teeth.

  Here, in the interdental cleaning tool 1, since the arm portion 60 has the back side inclined portion 64, the back side recess 32 is pressed with the index finger f2 in the state where the handle portion 10 is held in this first lower jaw cleaning manner. Sometimes, the index finger f2 comes into contact with the back inclined portion 64 to restrict the displacement of the index finger f2 toward the arm portion 60 side. Therefore, since the positional relationship of the three fingers of the thumb f1, the index finger f2, and the middle finger f3 when this holding is performed is defined, the pressing force of the connecting portion 30 by the index finger f2 is effectively ensured. Therefore, the insertability of the floss 2 between the back teeth is enhanced. In addition, by pressing the dorsal recess 32 with the index finger f2 and operating the handle portion 10 so that the floss 2 is displaced along the extending direction between the teeth, the insertion of the floss 2 between the teeth is further enhanced. .

  Moreover, since the to-be-clamped part 20 has the back side bulging part 22, clamping of the to-be-clamped part 20 becomes easy.

  Furthermore, since the distance d2 from the reference straight line A to the top 60a of the arm part 60 is larger than the distance d1 from the reference straight line A to the top 22a of the back-side bulged part 22, the first mandibular cleaning method was used. The displacement of the index finger f2 toward the arm portion 60 side is more reliably regulated.

  Moreover, since the top part 22a of the back side bulging part 22 is located on the arm part 60 side with respect to the narrow part 21, when the handle part 10 is held in the first mandibular cleaning way, the index finger f2 is the thumb. It becomes easier to be positioned on the arm part 60 side than the positions of f1 and middle finger f3. Specifically, since the outer side surface of the sandwiched portion 20 is curved so as to protrude inward in the width direction, when the sandwiched portion 20 is sandwiched between the thumb f1 and the middle finger f3, these fingers Is guided to the narrow portion 21 having the smallest dimension in the width direction among the sandwiched portions 20. Further, since the top portion 22 a of the back-side bulging portion 22 is located on the arm portion 60 side with respect to the narrow portion 21, the index finger f <b> 2 placed on the connecting portion 30 is a thumb f <b> 1 located on the narrow portion 21. And it is guided to be positioned on the arm part 60 side with respect to the middle finger f3. Therefore, since the position (power point) of the index finger f2 is separated from the position of the thumb f1 and the middle finger f3 (fulcrum) holding the narrow portion 21 toward the arm portion 60, the force when inserting the floss 2 between the teeth is secured. It becomes easy to be done.

  Next, the second lower jaw cleaning method will be described with reference to FIG. The second lower jaw cleaning method is a method of holding the handle portion 10 from both sides in the height direction by the index finger f2, the middle finger f3, and the thumb f1. More specifically, the index finger f2 is placed on the back side recess 32 of the connecting portion 30, and the middle finger f3 is placed on the back side finger rest portion 42 of the finger rest portion 40 (the index finger f2 and the middle finger f3 are placed on the handle portion 10). And the thumb f1 is brought into contact with the abdominal surface of the handle portion 10. This holding method is also suitable for cleaning between the back teeth of the lower jaw.

  In the interdental cleaning tool 1 of the present embodiment, the top portion 24 a of the ventral side bulging portion 24 is located on the opposite side of the arm portion 60 from the top portion 22 a of the back side bulging portion 22. For this reason, when the handle portion 10 is held in the second way of cleaning the lower jaw, the position (force point) of the index finger f2 is separated from the position (fulcrum) of the thumb f1 toward the arm portion 60, so that the floss 2 is inserted between the teeth. The power to perform is more reliably secured.

  Further, since the connecting portion 30 has the abdominal recess 34, when the handle portion 10 is held in the second lower jaw cleaning manner, the position of the thumb f1 is restrained by the abdominal recess 34, whereby the arm 60 of the thumb f1. Displacement to the side and the sandwiched portion 20 side is restricted. Therefore, the force when inserting the floss 2 between the teeth and the force when separating the floss 2 from between the teeth are more reliably ensured.

  Furthermore, since the bottom 32a of the back recess 32 is located closer to the arm 60 than the bottom 34a of the vent recess 34, the position (power point) of the index finger f2 that contacts the back recess 32 is the abdominal recess 34. It moves away from the position (fulcrum) of the thumb f1 in contact with the arm portion 60 side. Therefore, the pressing force of the connecting part 30 by the index finger f2 is effectively ensured.

  Moreover, since the dimension of the front wide part 31 in the width direction and the dimension of the rear wide part 41 in the width direction are respectively larger than the dimension of the narrow part 21 in the width direction, the handle part 10 is held in the second manner of holding the lower jaw. When holding, the index finger f2 and the middle finger f3 are received in a relatively large area. Therefore, it is suppressed that the handle | steering-wheel part 10 rotates around an axis | shaft parallel to an axial direction. The upper limit of the ratio of the dimension h6 to the dimension w6 of the front wide part 31 and the upper limit of the ratio of the dimension h7 to the dimension w7 of the rear wide part 41 are such that the handle part 10 rotates about an axis parallel to the axial direction. From the viewpoint of suppression, 80% or less is preferable, 70% or less is more preferable, and 50% or less is even more preferable. Further, the lower limit of the ratio of the dimension h6 to the dimension w6 of the front wide portion 31 and the lower limit of the ratio of the dimension h7 to the dimension w7 of the rear wide portion 41 are not particularly limited, but are usually 30% or more.

  Finally, the upper jaw cleaning method will be described with reference to FIG. The upper jaw cleaning method is a method of holding the handle portion 10 from both sides in the height direction by the index finger f2, the middle finger f3, and the thumb f1. More specifically, the index finger f2 is placed in the ventral side recess 34 of the connecting portion 30 and the middle finger f3 is placed on the ventral side finger resting portion 44 of the finger hanging portion 40 (the index finger f2 and the middle finger f3 are placed on the handle portion 10). And the thumb f1 is brought into contact with the back-side recess 32 of the handle portion 10. This way of holding is suitable for cleaning between the maxillary back teeth. Specifically, the insertion method between the teeth of the floss 2 in the upper jaw cleaning method is as follows. First, the floss 2 is positioned below the intermaxillary teeth of the upper jaw with the handle portion 10 held in the upper jaw cleaning manner. Thereafter, the thumb f1 presses the back side recess 32 of the connecting portion 30 toward the abdominal side (interdental side) in the height direction. Thereby, the floss 2 is inserted between the teeth of the back teeth.

  Here, in the interdental cleaning tool 1, when the dorsal recess 32 is pressed with the thumb f <b> 1 with the handle portion 10 held in the upper jaw cleaning manner, the thumb f <b> 1 comes into contact with the dorsal inclined portion 64. The displacement of the thumb f1 toward the arm unit 60 is restricted. Therefore, the force at the time of inserting the floss 2 between the back teeth of the upper jaw is reliably ensured.

  Further, since the top portion 22a of the back-side bulging portion 22 is located closer to the arm portion 60 side than the top portion 24a of the ventral-side bulging portion 24, the thumb f1 when the handle portion 10 is held in the upper jaw cleaning manner. Is moved away from the position (fulcrum) of the index finger f2 toward the arm unit 60 side. Therefore, the force at the time of inserting the floss 2 between teeth is ensured more reliably. In addition, since the bottom portion 32a of the back-side concave portion 32 is located closer to the arm portion 60 than the bottom portion 34a of the ventral-side concave portion 34, this effect becomes more remarkable.

  Further, when the handle portion 10 is held in the upper jaw cleaning manner, the position of the index finger f2 is restricted by the abdominal recess 34, so that the displacement of the index finger f2 toward the arm portion 60 side and the sandwiched portion 20 side is restricted. The Therefore, the force when inserting the floss 2 between the back teeth of the upper jaw and the force when separating the floss 2 from between the teeth are more reliably ensured.

  In addition, it should be thought that the said embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, the back surface and the abdominal surface of the connecting portion 30 may be flat.

  Moreover, the back side bulging part 22 may have a shape in which the top part 22a overlaps the narrow part 21 in the height direction. The same applies to the ventral bulging portion 24.

  The distance d2 from the reference straight line A to the top 60a of the arm part 60 may be equal to or less than the distance d1 from the reference straight line A to the top 22a of the back-side bulging part 22.

  Moreover, the outer side surface of the to-be-clamped part 20 is not restricted to the shape which curves so that it may become convex toward the inner side of the width direction. For example, the outer surface of the sandwiched portion 20 may be flat.

DESCRIPTION OF SYMBOLS 1 Interdental cleaning tool 2 Floss 3 Main body 10 Handle part 20 Clamping part 21 Narrow part 22 Back side bulging part 22a Top part 24 Abdominal side bulging part 24a Top part 30 Connection part 31 Front wide part 32 Back side recessed part 32a Bottom part 34 Abdominal recess 34a Bottom 40 Finger hanging portion 41 Rear wide portion 42 Back side finger hanging portion 44 Abdominal finger hanging portion 60 Arm portion 62 Support portion 64 Back side inclined portion

Claims (9)

An interdental cleaning tool,
Floss that can be cleaned between teeth,
A main body for holding the floss,
The body is
A handle portion having a shape extending in a specific direction;
An arm portion that is connected to one end of the handle portion in the specific direction and has a pair of support portions that support the floss in a state of facing the width direction orthogonal to the specific direction;
The arm portion has a shape that curves so as to be convex toward one side in a height direction orthogonal to both the specific direction and the width direction,
The handle portion is
A sandwiched portion sandwiched by fingers from both sides in the width direction;
A connecting portion for connecting the arm portion and the gripping portion;
The dimension of the sandwiched portion in the height direction is larger than the dimension of the connecting portion in the height direction,
The interdental cleaning tool, wherein the arm portion has a dorsal inclined portion that gradually inclines toward one side in the height direction as the arm portion is separated from the connecting portion. The interdental cleaning tool according to claim 1,
The interdental cleaning tool has a dorsal bulging portion that is formed on one side in the height direction and has a shape that curves so as to protrude toward the one side in the height direction. . In the interdental cleaning tool of Claim 2,
Interdental cleaning in which the distance from the reference straight line to the top of the arm part is greater than the distance from the reference straight line passing through the sandwiched part and parallel to the specific direction to the top of the dorsal bulge part Ingredients. In the interdental cleaning tool according to claim 2 or 3,
The outer surface of the sandwiched portion in the width direction has a shape that curves so as to be convex inward in the width direction,
The interdental cleaning tool, wherein a top portion of the back-side bulging portion is located closer to the arm portion than a narrow portion having the smallest dimension in the width direction among the sandwiched portions. The interdental cleaning tool according to any one of claims 2 to 4,
The handle portion is an interdental cleaning tool further connected to an end portion of the sandwiched portion on the side opposite to the connecting portion side in the specific direction and further having a finger hook portion for hooking a finger. In the interdental cleaning tool according to claim 5,
The sandwiched portion has a ventral bulging portion that is formed on the other side in the height direction and has a shape that curves so as to protrude toward the other side in the height direction,
The interdental cleaning tool, wherein the top of the ventral bulge is located on the opposite side of the arm from the top of the back bulge. In the interdental cleaning tool according to claim 5 or 6,
The interdental cleaning tool, wherein the connecting portion has an abdominal concave portion formed on the other side in the height direction and curved so as to be convex toward the one side in the height direction. The interdental cleaning tool according to claim 7,
The connecting portion has a back side concave portion that is formed on one side in the height direction and has a shape that curves so as to be convex toward the other side in the height direction,
The interdental cleaning tool, wherein the bottom of the back recess is located closer to the arm than the bottom of the abdomen recess. The interdental cleaning tool according to any one of claims 5 to 8,
The interdental cleaning tool, wherein the dimension of the connecting part in the width direction and the dimension of the finger hanging part in the width direction are larger than the dimension of the sandwiched part in the width direction, respectively.

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