JP2016202922A - Brush body and brush body with handle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a brush body capable of efficiently cleaning a narrow place without applying a large force.SOLUTION: A roller-shaped brush body 7 is attached to one end side of a handle part 3 to be gripped by a user in a longitudinal direction. A ridge line formed by tips of a brush bristle group constituting the brush body in a width direction is formed so as to be larger in diameter gradually and continuously from both sides to the central part. A large-diameter portion can enter a narrow place without being obstructed by a small-diameter portion, and thus the brush body can clean the narrow efficiently place without applying a large force.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a toothbrush provided with a brush body that rotates bi-directionally with respect to a handle, and a brush body that can be used for such a toothbrush.

  Patent Document 1 discloses a rotating toothbrush configured by stacking a large number of annular brushes. Moreover, the rotating toothbrush shown in Patent Document 2 is configured by alternately overlapping annular brushes and washers. Patent Document 3 discloses a roll toothbrush configured by winding a flocked lead wire around a reel barrel.

  On the other hand, there is known a cylindrical toothbrush that does not rotate but is configured by stacking a large number of annular brushes (Patent Document 4). Furthermore, a barrel-shaped toothbrush that is not rotated is also known (Patent Document 5).

Japanese Patent No. 4037739 Japanese Patent No. 3646118 JP 2007-202798 A JP 2005-103225 A Japanese Patent No. 4579345

  However, since the toothbrushes shown in Patent Documents 1 to 4 are all cylindrical, they are not suitable for polishing a gap in the oral cavity. The gap in the oral cavity refers to a gap such as a gap between adjacent teeth or a periodontal pocket between teeth and gums. In order to polish the gap with a cylindrical toothbrush, a part of the bristle group constituting the toothbrush is inserted therein. If you try to put a part of the bristle into the gap, the bristle on both sides of the bristle of the part you want to put in will strangle you. For this reason, the user must insert the part to be inserted into the gap in the oral cavity while pushing and bending the brush hairs on both sides. In this case, the brush body must be strongly pressed against the intraoral site and polished, and as a result, the gums or the like that are the intraoral site may be damaged on both sides. Not only that, it was not possible to fully polish the gaps (tooth neck). Although the above-mentioned prior art relates to a toothbrush, the desire to surely polish a narrow gap is placed not only in the oral cavity but every place to be polished.

  The present invention has been made in view of such circumstances, and it is possible to efficiently reduce a narrow portion such as a gap in the oral cavity (between teeth, a tooth neck, a depression of a tooth occlusal surface, etc.) without using a large force. The object is to provide a brush body and a brush body with a handle that can be polished well.

  In order to achieve the above object, the present invention comprises the following arrangement. It should be noted that the definitions of terms used to describe the invention described in any claim are applicable to the invention described in other claims, regardless of the description order, etc. And

(Characteristics of the invention of claim 1)
The brush body according to the first aspect of the present invention (hereinafter referred to as “the brush body of the first aspect” as appropriate) is a roller-shaped brush body that is attached to one end in the longitudinal direction of the handle. This is because the ridge line (line extending from the hair tip to the hair tip) formed in the width direction by the tip of the bristle group constituting the brush body has a large diameter stepwise or continuously from both sides toward the center. It is formed as follows. The attachment to the handle may be appropriately selected according to the use of the brush body, such as bi-directionally rotatable, reciprocally rotatable, and non-rotatable.

  The width direction ridge line of the brush body is formed so as to increase in diameter stepwise or continuously from both sides to the center part, so that it is not obstructed by parts on both sides when trying to polish a narrow gap etc. It is easy to insert the central part into the place. Thereby, even if it does not apply big force, the clearance gap can be cleaned and polished smoothly. On the other hand, if the extra force is applied and pressed, the brush hairs at the center are bent, and the ridge line is flattened together with the brush hairs on both sides, so that polishing and cleaning of a wide part can be performed efficiently.

(Characteristics of the invention described in claim 2)
The brush body according to the invention described in claim 2 (hereinafter referred to as “the brush body of claim 2” as appropriate) is a preferred embodiment of the brush body of claim 1, and the cross-sectional shape passing through the central axis of the brush body is approximately It is formed into a spherical shape, a substantially oval shape, a substantially cross shape, a substantially rhombus shape, or a substantially hexagonal shape.

  According to the brush of the second aspect, in addition to the function and effect of the brush body of the first aspect, when the above shape is selected, there is an advantage that since the structure is simple, the manufacturing becomes easy. Which shape is selected may be selected according to the usage of the brush body or the user's preference.

(Characteristics of Claim 3)
The brush body according to the invention of claim 3 (hereinafter referred to as “the brush body of claim 3” as appropriate) is a preferred embodiment of the brush body of claim 1, and a large-diameter brush body located in the center portion, It is characterized by including a pair of small diameter brush bodies each having a smaller diameter than the large diameter brush body and disposed on both sides of the large diameter brush body.

  According to the toothbrush of the third aspect, it is sufficient to prepare two types of brush bodies, a large-diameter brush body and a small-diameter brush body, together with the operation and effect of the brush body of the first aspect.

(Feature of the invention of claim 4)
A brush body according to a fourth aspect of the invention (hereinafter referred to as “the brush body of the fourth aspect” as appropriate) is a preferred embodiment of the brush body according to any one of the first to third aspects. The annular brushes are formed side by side in the thickness direction.

  According to the brush of Claim 4, with the effect of the brush body in any one of Claims 1 thru | or 3, the length of a brush body can be adjusted with many numbers with which an annular brush is arranged. Furthermore, when changing the length of the bristles, for example, it is easier to manufacture than the case where the bristles of a group of brush bristles, such as chestnut burrs, are cut to produce the appropriate ridgeline. Can do.

(Feature of the invention of claim 5)
A brush body with a handle according to the invention of claim 5 (hereinafter referred to as “the brush body with a handle of claim 5” as appropriate) is bidirectional with the brush body of claim 1 and the brush body at one end side. And a handle portion that is rotatably supported.

  According to the brush body with a handle of claim 5, the effects of the brush bodies of claims 1 to 4 can be produced as a brush body with a handle. The brush body rotates by the frictional force received from the object when the user presses the brush body against the object to be polished with a handle and moves the brush body in the polishing direction.

(Characteristics of the invention described in claim 6)
A brush body with a handle according to the invention described in claim 6 (hereinafter referred to as “the brush body with handle according to claim 6” as appropriate) is a bidirectional mode of the brush body as a preferred embodiment of the brush body with a handle according to claim 5. A rotation prevention structure for releasably preventing rotation is provided.

  According to the brush body with a handle of claim 6, it is possible to polish according to the intended use together with the function and effect of the brush body with the handle of claim 5. In other words, when the two-way rotation is more suitable, the rotation prevention structure can be put into the released state, and when it is more convenient not to rotate, the rotation prevention structure can be put into the rotation prevention state.

(Feature of the invention of claim 7)
A brush body with a handle according to the invention of claim 7 (hereinafter referred to as “the brush body with a handle of claim 7” as appropriate) is a bidirectional form of the brush body as a preferred embodiment of the brush body with a handle of claim 5. An angle limiting structure for limiting the rotation to a desired angle of less than one rotation (for example, 120 degrees) is provided.

  According to the brush body with a handle according to claim 7, the polishing according to the intended use can be performed together with the function and effect of the brush body with the handle according to claim 5. In other words, the polishing range of the brush body can be adjusted by limiting the angle.

(Characteristics of the invention described in claim 8)
A brush body with a handle according to the invention of claim 8 (hereinafter referred to as “the brush body with handle of claim 8” as appropriate) is a preferred embodiment of the brush body with the handle of claim 5, and is one end side of the handle portion. And a fixed shaft having both ends fixed to the both support arms, and the brush body is rotatably supported with respect to the fixed shaft.

  According to the brush body with a handle according to the eighth aspect, among the effects of the brush body with the handle according to the fifth aspect, the rotation of the brush body is caused by the rotation of the brush body around the fixed shaft. Since the fixed shaft does not rotate, the structure for fixing to both support arms can be simplified.

(Feature of the invention of claim 9)
A brush body with a handle according to the invention described in claim 9 (hereinafter, referred to as “the brush body with handle according to claim 9” as appropriate) is a preferred embodiment of the brush body with a handle according to claim 5, and is one end side of the handle portion. A pair of support arms provided on the rotary shaft, and a rotary shaft that is rotatably supported by both the support arms at both ends,
The brush body is supported so as to be rotatable together with the rotating shaft.

  According to the brush body with a handle of the ninth aspect, among the effects of the brush body with the handle according to the fifth aspect, the rotation of the brush body is caused by the integral rotation with the rotating shaft. That is, the brush body and one rotation shaft rotate with respect to both support arms.

(Features of the invention of claim 10)
The brush body with a handle according to the invention of claim 10 (hereinafter referred to as “the brush body with the handle of claim 10” as appropriate) includes a rotation prevention structure as a preferred embodiment of the brush body with the handle of claim 9, The rotation-preventing structure includes a rotation projecting portion including a portion in which at least one of both ends of the rotating shaft projects to one outer side of the support arm, and extends from the rotation projecting portion along one outer peripheral surface of the support arm. And at least one rotating arm, and a rotation preventing member that can be attached to and / or detached from one or both of the support arms and that blocks the rotation arm in both directions and prevents rotation in both directions. Features.

  According to the brush body with a handle of claim 10, together with the effect of the brush body with the handle of claim 9, the rotation of the brush body integral with the rotating shaft is prevented by the action of the rotation prevention structure. Specifically, when the rotation prevention member is not attached, the rotation protrusion and the rotation arm are in a state of being capable of rotating in both directions. On the other hand, when the rotation prevention member is attached to one or both of the support arms (that is, one end side of the handle), since the bidirectional rotation of the rotation arm is prevented, the rotation is prevented. When the rotation prevention member is removed, the rotation returns to a state where it can rotate.

(Characteristic of the invention of claim 11)
The brush body with a handle according to the invention of claim 11 (hereinafter referred to as “the brush body with the handle of claim 11” as appropriate) has an angle limiting structure as a preferred embodiment of the brush body with the handle of claim 9, The angle restricting structure includes a rotation protruding portion including a portion in which at least one of both ends of the rotating shaft protrudes outside one of the support arms, and extends from the rotation protruding portion along one outer peripheral surface of the support arm. At least one rotating arm and at least one projecting pin projecting from the outside of the support arm, the projecting pin including the rotating arm to limit bidirectional rotation within a desired angle of less than one revolution. It is comprised so that it may contact | abut.

  According to the brush body with a handle of claim 11, together with the effect of the brush body with the handle of claim 9, the rotation of the brush body integral with the rotating shaft is prevented by the action of the angle limiting structure. Specifically, when the rotation prevention member is not attached, the rotation protrusion and the rotation arm are in a state of being capable of rotating in both directions. On the other hand, when the rotation prevention member is attached to one or both of the support arms (that is, one end side of the handle), since the bidirectional rotation of the rotation arm is prevented, the rotation is prevented. When the rotation prevention member is removed, the rotation returns to a state where it can rotate. When there is only one protruding pin, the rotation of the brush body is limited to within approximately one rotation, and when there are two protruding pins, the rotation of the brush body is limited to an angle formed between them.

(Feature of the invention of claim 12)
A brush body with a handle according to the invention of claim 12 (hereinafter referred to as “the brush body with a handle of claim 12” as appropriate) is a collection of brush bodies with a handle according to any one of claims 5 to 11. is there. The set of handle portions may be a set formed by bundling a plurality of handle portions, or may be one in which a brush body is provided on each of the child handle portions branched from one parent handle portion as an aggregate.

  According to the brush body with a handle of claim 11, the effect of the brush body with the handle of any one of claims 5 to 11 can be obtained at the same time in two places, possibly producing a synergistic effect.

(Feature of the invention of claim 13)
The toothbrush according to the invention of claim 13 (hereinafter referred to as “the brush body with handle of claim 13”) is characterized in that the brush body with handle of any of claims 5 to 12 is a toothbrush.

  Since the brush body with a handle according to claim 13 is a toothbrush, a large-diameter part easily enters a narrow part without being obstructed by a small-diameter part, so a V zone between teeth, a periodontal pocket, etc. This part can be polished efficiently.

  ADVANTAGE OF THE INVENTION According to this invention, the rotation toothbrush which can polish the clearance gap in an oral cavity without using big force can be provided.

It is a perspective view of a toothbrush. It is a side view of a brush body. It is a front enlarged view of a toothbrush. It is a front view for demonstrating the use condition of a toothbrush. It is a top view which shows the use condition of a toothbrush. It is a front view of the toothbrush which concerns on the modification 1 of this embodiment. It is a front view of the toothbrush which concerns on the modification 1 of this embodiment. It is a front view of the toothbrush which concerns on the modification 2 of this embodiment. It is a front view of the toothbrush which concerns on the modification 2 of this embodiment. It is a front view which shows the use condition of a toothbrush. It is a front view of the toothbrush which concerns on the modification 3 of this embodiment. It is a front view of the toothbrush which concerns on the modification 4 of this embodiment. It is a front view of the toothbrush which concerns on the modification 4 of this embodiment. It is a front view of the toothbrush which concerns on the modification 5 of this embodiment. It is a front view of the toothbrush which concerns on the modification 6 of this embodiment. It is a top view which shows the use condition of the toothbrush which concerns on the modification 6 of this embodiment. It is a front view which shows the use condition of the toothbrush which concerns on the modification 7 of this embodiment.

  A mode for carrying out the present invention (hereinafter referred to as “appropriate“ this embodiment ”) will be described with reference to the drawings. The brush body of the present embodiment can be used for various applications, but in order to be optimal for such applications, the overall size, the composition ratio of large and small brushes described later, and the material of the brush hair It is desirable to customize the length and length. On the other hand, the brush body in the present embodiment has a handle and is limited to a toothbrush for easy explanation, but as described above, it should be used for various purposes. For this reason, the interpretation of rights should not be limited to toothbrushes. Furthermore, although the toothbrush of this embodiment is for polishing the intraoral site | part of a human, for example, it does not prevent using it as what polishes the intraoral site | part of a domestic animal.

(Schematic structure of toothbrush)
The schematic structure of the toothbrush 1 will be described with reference to FIG. The toothbrush 1 includes a handle portion 3 for a user to hold, a support shaft 5 provided on one end side in the longitudinal direction of the handle portion 3, and a predetermined direction with respect to the support shaft 5 (in this embodiment, the handle portion 3 A roller-like brush body 7 that rotates in both directions in the length direction). The handle portion 3 has a handle portion main body 3a having a length required for user brushing and a length necessary for brushing, and a pair of support arms 3b and 3b continuous with the handle portion main body 3a at one end in the longitudinal direction. . The material of the handle 2 may be any material such as wood or metal, but in this embodiment, a synthetic resin is used. This is because it is lighter than metal materials and can be easily manufactured by integral molding. Furthermore, providing a hinge (not shown) at the central portion of the handle 2 so that it can be folded is convenient because the toothbrush 1 can be carried compactly.

  The pair of support arms 3b, 3b are opposed to each other, and the support shaft 5 is bridged and fixed between them. The support arms 3b and 3b are configured to be elastically deformable outward, and it is preferable that the support shaft 5 can be attached and detached using this elastic deformation. This is because the brush body 7 is a consumable item that is worn by use, and therefore it is economical if the handle 2 is used repeatedly, and the brush body 7 can be removed and replaced along with the attachment and detachment of the support shaft 5.

(Brush structure)
The brush body 7 is formed by arranging a plurality of thin annular brushes 9 as shown in FIG. 2 in the thickness direction. The annular brush 9 is composed of an annular bearing portion 9a as a central portion and a large number of brush bristles 9b (brush bristle group 9c) extending radially from the outer periphery of the bearing portion 9a. The bristle group 9c of this embodiment is made of synthetic resin, and after welding the base of each bristle 9b, the center hole 9h is cut out, and this welded portion becomes the bearing portion 9a. The inner diameter of the center hole 9h is slightly larger than the outer shape of the support shaft 5 (FIG. 1), and the entire support of the annular brush body 9 is passed through the support shaft 5 without friction. It is configured to be able to rotate in both directions. In this embodiment, the support shaft 5 is a fixed shaft for the support arms 3b and 3b, and the entire brush body 7 is rotatable with respect to the support shaft 5. However, the support shaft 5 is a rotation shaft, and the brush body is configured to be rotatable. 7 may be configured to rotate integrally with the brush body 7 fixed to the support shaft 5 (refer to a modification described later).

  Based on FIG. 3, the detail of the brush body 7 is demonstrated. Here, the annular brush 9 is divided into two types, a large diameter and a small diameter. Therefore, in order to distinguish them, they are referred to as a large diameter annular brush 9L and a small diameter annular brush 9S. In addition, in FIG. 3, the complicated structure (a dimension ratio, the number of the number of annular brushes, etc.) of a bristle is shown schematically (the same is applied to the same figures in FIG. 4 and subsequent figures). That is, the brush body 7 includes at least one (three in the present embodiment) large-diameter annular brush 9L, and two small-diameter annular brushes 9S each sandwiching these on both sides (only at least one), These are constituted by washers W arranged between them, and these can be rotated bidirectionally with respect to the support shaft 5. As a result of dividing into two types of large diameter and small diameter, the ridgeline L1 formed in the width direction by the tip of the brush bristle group gradually becomes a mountain shape (tapered or large diameter) from both sides toward the center, and the support shaft 5 is The cross-sectional shape is formed in a substantially cross shape. The preferred dimensions are for adults, the diameter of the large-diameter annular brush 9L is 14-16 mm, the diameter of the small-diameter annular brush 9S is 9-11 mm, and the diameter of the large-diameter annular brush 9L for children is 10-10 mm. Similarly, the diameter of the small-diameter annular brush 9S is 6 to 9 mm. Although not intended to exclude dimensions other than those described above, these are set according to the average dimension of the intraoral site.

(Brush body effect)
The operational effects of the toothbrush 1 will be described with reference to FIGS. The user holds the handle portion 3 (the handle portion main body 3a), and along the rotation direction of the brush body 7 (the direction of the double-headed arrow in FIGS. 4 and 5 or the thickness direction of the paper surface), teeth, gums, It is possible to efficiently polish the intraoral site such as a tooth-gum boundary) or a dent on the occlusal surface of the tooth (engagement surface, see FIG. 10). Then, the large-diameter annular brush 9L of the brush body 7 is formed in the gap between the tooth Ta and the tooth Tb shown in FIG. 5 or the gap between the tooth and the gum (see the tooth neck Ga, Gb, FIG. 4). When the rotary brush 9L is rotated, the large-diameter annular brush 9L easily enters the gap, and the small-diameter annular brushes 9S and 9S are difficult to prevent the entry. Further, both small-diameter annular brushes 9S, 9S hit the surfaces of both walls of the gap (for example, the aligned teeth Ta, Tb, see FIG. 5), thereby holding the large-diameter annular brush 9L so as not to escape from the gap. Thus, the user can efficiently polish the gaps in the oral cavity without using a large force. Because it can be polished without using great force, it does not damage the oral cavity, especially the gums.

  Since the brush body 7 described above constitutes a part of the toothbrush, the brush body 7 is used by being attached to a shape suitable for toothbrushing such as the handle portion 3, but for uses other than toothbrushing. If used, it is preferable to customize appropriately according to the use. Although not shown in the drawings, the handle portion is composed of a rigid bar, a flexible string-like member, or the like, and the user can hold both ends, or one end can be fixed and the other end can be gripped and polished. If the handle is unnecessary when used for other purposes, it can be omitted and used alone.

(Modification 1 of this embodiment)
The modification of the present embodiment is different from the brush body 7 of the present embodiment. First, of the three large-diameter annular brushes 9L ′ of the brush body 7A, the middle large-diameter annular brush is replaced with the other two large-diameter annular brushes. A point where the diameter is larger than that of the annular ring brush (FIG. 6), and in addition, a point where the inner one of the two smaller diameter annular brushes 9S ′ and 9S ′ is larger than the outer one (FIG. 7). It is. As a result, the tip of the large-diameter annular brush is formed such that the cross-sectional shape of the brush body 7A passing through the support shaft 5 is a ridge line L2 or the cross-sectional shape of the brush body 7B is a substantially rhombus or hexagon including the ridge line L3. It becomes easy to enter various gaps in the oral cavity. Since both small-diameter annular brushes 9S of the brush body 7A are the same as both small-diameter annular brushes of the brush body 7A, the reference numerals used in FIG. 3 are used as they are in FIG. Moreover, the code | symbol 5 used in FIG. 6 and FIG. 7 shows the same spindle as what is used in FIG.

(Modification 2 of this embodiment)
A second modification of the present embodiment will be described with reference to FIG. The brush body 7 'according to the modification 2 is different from the brush body 7 (FIG. 3) described above in that the brush body 7' has annular brush bodies 9P and 9P that the brush body 7 does not have. is there. In the following, description will be made centering on the above-mentioned different points, and description of common points will be omitted only when necessary in principle. That is, both ends of the support shaft 5 are rotatably supported by the pair of support arms 3b and 3b, whereby the inner shaft portion 5a positioned between the pair of support arms 3b and 3b, and the support arm 3b, The outer shaft portions 5b and 5b slightly projecting outward from each of the 3b are divided in appearance. Here, annular brush bodies 9P, 9P different from the brush body 7 are fixed to the outer shaft portions 5b, 5b. The annular brush bodies 9P and 9P themselves have a function of polishing the oral cavity part, and also function as a buffer member for reducing the impact when the support arms 3b and 3b come into contact with the oral cavity part. That is, although the support arms 3b and 3b are made of, for example, wood or synthetic resin, they may damage the oral cavity due to contact when brushing the teeth, but the annular brush bodies 9P and 9P alleviate this. Give me. Therefore, the annular brush bodies 9P, 9P have a size (diameter) that can serve as a buffer member.

  Further, instead of the annular brush bodies 9P and 9P, as shown in FIG. 9, buffer members 9'P and 9'P made of a flexible material such as silicon rubber are covered with the support arms 3b and 3b. There is also a method of fixing to the outside. The size and shape of the buffer members 9′P and 9′P may be freely selected according to the design of the entire toothbrush 1 and the shapes of the support arms 3b and 3b. It is not always necessary to cover the entire outside of the support arms 3b and 3b as long as the purpose of protecting the oral cavity can be achieved.

(Modification 3 of this embodiment)
A toothbrush 31 shown in FIG. 11 includes a round bar-shaped handle portion 23 and a brush body 7 fixed to one end side of the handle portion 23. The brush body 7 may be the same as that employed in the present embodiment (the same applies to the following modifications). The brush body 7 may be rotatable with respect to the handle 23 or may not be rotatable. Even when the rotation is impossible, if the user rotates the handle 23 in the circumferential direction, the brush body 7 can be rotated up to one rotation. Therefore, it is also possible to obtain the effect similar to the toothbrush 1 of this embodiment.

(Modification 4 of this embodiment)
A modification 4 of the present embodiment will be described with reference to FIG. The handle portion 33 of the toothbrush 31 includes a handle portion main body 33a and a pair of support arms 33b and 33b (one is hidden and cannot be seen in FIG. 12) provided on the handle portion 33a on one end side. One end of the rotary shaft 35 supported at both ends by the support arms 33b and 33b protrudes from one side (the front side in FIG. 12) of the support arm 33b. The protruding portion (rotating protruding portion 35a) is provided with a rotating arm 37 extending along one outer peripheral surface of the support arm 33b (parallel to the paper surface of FIG. 12). The shape of the rotary arm 37 is not limited as long as the object can be achieved, but here, the rotary arm 37 is formed in a triangle having the rotation protrusion 35a as a base and the tip as a vertex, and rotates integrally with the rotation shaft 35 (brush body 7). It is configured as follows. That is, the rotary arm 37 is a member that rotates in both directions together with the rotary shaft like a clock hand. The rotation protrusion 35a, the rotation arm 37, and a rotation prevention member 39 (receiving recess 39a) to be described later are constituent members of the rotation prevention structure in the fourth modification.

  The code | symbol 39 of FIG. 12 shows the rotation prevention member comprised so that attachment or detachment was possible to both (it is good also as one side) of the support arm 33b. The rotation preventing member 39 is preferably formed of a synthetic resin thin plate having a shape similar to a U-shape when viewed from the left side in FIG. The holding piece 39a constituting one of the U-shapes cooperates with the other holding piece 39a (which is hidden and not visible in FIG. 12), and is formed between the pair of support arms 33b and 33b. Therefore, the rotation preventing member 39 can be attached to the toothbrush 31 in a form that can be removed. An inverted triangular receiving recess 39a is formed at the top of the sandwiching piece 39a shown in FIG. The receiving recess 39a has a function of receiving the rotating arm 37 when attached, and thereby blocking the rotating arm 37 in both directions to prevent bidirectional rotation. When the rotation preventing member 39 is attached before or after being attached, the brush body 7 can rotate in both directions.

  The rotation arm 37 and the receiving recess 39b have a role of cooperating to perform the above-described rotation prevention function, but any structure that can be adopted by those skilled in the art can be adopted as long as the role can be fulfilled. It does not require explanation. Furthermore, the clamping piece 39a can be replaced with a pin (not shown) or the like that is inserted into the support arm 33b.

(Modification 5 of this embodiment)
The toothbrush 41 shown in FIGS. 13 and 14 is according to the fifth modification, and the basic structure is the same as that of the toothbrush 31. The difference is that an angle limiting structure is provided instead of the rotation blocking structure of the toothbrush 31. is there. Therefore, the description here is focused on the angle limiting structure, and members that are the same as the members of the toothbrush 31 are given the same member numbers in FIG. 13, and descriptions thereof are omitted.

  A reference numeral 43 shown in FIG. 13 is provided with one rotary arm 43 extending from the rotary protrusion 35a along one outer peripheral surface of the support arm 33b (in parallel with the paper surface of FIG. 13). Furthermore, one projecting pin projecting from the outside of the support arm 33b is also provided. The protruding pin 45 is configured to contact the rotating arm 43 in order to limit the bidirectional rotation of the brush body 7 within a desired angle of less than one rotation. That is, for example, when the rotating arm 43 rotated in the clockwise direction comes into contact with the protruding pin 45, further rotation is blocked, and even when rotated in the counterclockwise direction, it is similarly blocked. As a result, the rotation angle of the rotary arm 43 is limited to a desired angle.

  Reference numeral 47 shown in FIG. 14 represents a protruding pin different from the protruding pin 45. That is, the rotation angle of the rotating arm 43 shown in FIG. 14 is limited by the protruding pin 45 and the protruding pin 47. The limit angle in FIG. 14 is an inner angle between the protruding pin 45 and the protruding pin 47, but may be an outer angle. The limitation on the rotation angle is the limitation on the range in which the brush body 7 rotates. The projecting pin 43 and the projecting pin 45 may be configured to be detachable from the support arm 33b, or may be configured so that the projecting position can be changed in that case. The forms of the rotating arm 43 and the projecting pins 45 and 47 can be freely changed as appropriate within the range of the purpose of limiting the rotation angle. The rotation protrusion 35a, the rotation arm 37, and the protrusion pins 45 and 47 are constituent members of the rotation blocking structure in the fifth modification.

(Modification 6 of this embodiment)
A toothbrush 51 shown in FIG. 15 has a plurality of (in this case, two) brush bodies 7 and 7 fixed to one end side (or rotatable), and the other end sides of the handle portions 55a and 55a are connected to the connecting portion. It is characterized in that it is assembled to the collective pattern portion 57 on one end side via 55b. It is convenient and convenient to use, for example, when brushing a plurality of places (for example, the front and back of teeth) simultaneously in one operation. Preferably, the entire handle may be made of a synthetic resin (other materials may be used) that can be elastically deformed. The brush bodies 7 and 7 in the state shown in FIG. 15 are arranged with an interval narrower than the thickness of the teeth, but as shown in FIG. 16, when the teeth T are inserted between the brush bodies 7 and 7, Both handle portions 55a, 55a are elastically deformed to widen the interval, and the elastic body is pressed against the brush bodies 7, 7 from the front and back of the tooth T. In this state, the height direction of the tooth T (perpendicular to the paper surface of FIG. 16). This is because the front and back can be polished efficiently by moving the direction. In particular, the large-diameter annular brush 9L of the brush body 7 enters the V zone between the tooth T and the other teeth T, and can be efficiently polished to a fine place in cooperation with the small-diameter annular brushes 9S and 9S.

(Modification 7 of this embodiment)
Based on FIG. 17, the toothbrush 61 which concerns on the modification 7 of this embodiment is demonstrated. The structure of the toothbrush 61 is basically the same as that of the toothbrush 51, and a different point is the rotation direction of the brush body 7 with respect to the handle portions 65a and 65a. That is, when the collective handle portion 67 is reciprocated in the direction indicated by the bidirectional arrow from the collective handle portion 67 to the tips of the handle portions 65a and 65a branched from the connecting portion 65b, the two-way rotation is performed accordingly. Thus, brush bodies 7 are provided. The handle portions 65a, 65a are configured so that the distance between them changes due to the reaction force received by the brush bodies 7, 7 from the teeth T. It is the same as the toothbrush 51 in that the brush bodies 7, 7 can enter the V zone between the teeth and be polished efficiently.

1 toothbrush 3 handle 3b support arm 5 spindle
5a Inner shaft portion 5b Outer shaft portion 7 Brush body 9 Annular brush 9a Bearing portion 9b Brush hair 9c Brush hair group (a collection of brush hairs)
9h Center hole 9L Large-diameter annular brush 9S Small-diameter annular brush 21 Toothbrush 23 Handle
31 Toothbrush 33 Handle 33a Handle Main Body 33b Support Arm 35 Rotating Shaft 35a Rotating Projection 37 Rotating Arm 39 Rotation Prevention Member 39a Receiving Recess 41 Toothbrush 43 Rotating Arm 45 Projecting Pin 47 Projecting Pin 51 Toothbrush 55a Handle 55b Connecting Portion 57 Assembly Handle 61 Toothbrush 65a Handle 65b Connecting part 67 Assembly pattern L Ridge line W washer (spacer)

Claims (13)

A roller-shaped brush body attached to one end side in the longitudinal direction of the handle,
A brush body characterized in that a ridge line formed in the width direction by the tip of the bristle group constituting the brush body has a large diameter stepwise or continuously from both sides toward the center. . 2. The brush body according to claim 1, wherein a cross-sectional shape along the central axis of the brush body is formed in a substantially spherical shape, a substantially elliptical shape, a substantially cross shape, a substantially rhombus shape, or a substantially hexagonal shape. A large-diameter brush body located in a central portion and a pair of small-diameter brush bodies each having a smaller diameter than the large-diameter brush body and arranged on both sides of the large-diameter brush body are included. The brush body according to 1. The brush body according to any one of claims 1 to 3, wherein the brush body is formed by arranging a plurality of thin annular brushes in a thickness direction. The brush body according to any one of claims 1 to 4,
And a handle portion that supports the brush body on one end side so as to be bi-directionally rotatable. The brush body with a handle according to claim 5, further comprising a rotation prevention structure for releasably preventing bidirectional rotation of the brush body. The brush body with a handle according to claim 5, further comprising an angle limiting structure for limiting bidirectional rotation of the brush body within a desired angle of less than one rotation. A pair of support arms provided on one end side of the handle;
A fixed shaft having both ends fixed to the support arms,
The brush body with a handle according to claim 5, wherein the brush body is rotatably supported with respect to the fixed shaft. A pair of support arms provided on one end side of the handle;
A rotating shaft that is rotatably supported at both ends by the both supporting arms,
The brush body with a handle according to claim 5, wherein the brush body is supported so as to be integrally rotatable with the rotation shaft. It has a rotation prevention structure,
The rotation prevention structure is
A rotating protrusion comprising at least one of both ends of the rotating shaft protruding outside one of the support arms;
At least one rotating arm extending from the rotating protrusion along one outer peripheral surface of the support arm;
The rotation prevention member which can be attached to and detached from one or both of the support arms and which blocks the rotation arm in both directions and prevents rotation in both directions when attached. Brush with handle. With an angle limiting structure,
The angle limiting structure is
A rotating protrusion comprising at least one of both ends of the rotating shaft protruding outside one of the support arms;
At least one rotating arm extending from the rotating protrusion along one outer peripheral surface of the support arm;
And at least one projecting pin projecting from the outside of the support arm,
The brush body with a handle according to claim 9, wherein the protruding pin is configured to abut against the rotating arm in order to limit bidirectional rotation within a desired angle of less than one rotation. A brush body with a handle according to any one of claims 5 to 11,
A collective brush body with a handle formed by gathering the other end sides of the handle portions of the plurality of handle brush bodies on one end side. It is a toothbrush. The brush body with a handle in any one of Claim 5 thru | or 12 characterized by the above-mentioned.

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