JP2014100380A - Toothbrush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a toothbrush using melamine sponge capable of performing melamine sponge replacement work easily while eliminating waste in melamine sponge.SOLUTION: In a toothbrush 50 having a body part 10 and a tooth abutting part 20 freely attachable to and detachable from the body part 10, the tooth abutting part 20 includes a melamine sponge 30 and a holding part 40 having a recess 42 for holding the melamine sponge 30. The width dimensions of the melamine sponge 30 are formed so as to be larger than the inner width dimensions of the recess 42 of the holding body 40. Claw parts 46A and 48A to bite into the outer bottom surface and the outer peripheral surface of the melamine sponge 30 held by the recess 42 of the holding body 40 are provided on at least one of the inner bottom surface and the inner peripheral surface in the recess 42 of the holding body 40.

Description

  The present invention relates to a toothbrush, and more particularly to a toothbrush using a melamine sponge.

The melamine sponge is sometimes called a melamine foam, and is a sponge made of a synthetic resin in which fine bubbles are contained. When such a melamine sponge is used, the object to be cleaned can be removed without using a detergent, and it is widely used.
In recent years, for example, as shown in Patent Document 1, a toothbrush using a melamine sponge has been provided, and a toothbrush that can easily remove stains such as stains attached to teeth by ingestion of coffee or tea is provided. Are known.

Registered Utility Model No. 3171718

Patent Document 1 discloses a configuration of an electric melamine sponge toothbrush in which a melamine sponge is attached to a tip portion of a handle.
The electric melamine sponge toothbrush disclosed in Patent Document 1 employs a configuration in which a long melamine sponge is mounted in a state where the melamine sponge is folded at the tip of the handle as shown in the figure. Since the part where such a melamine sponge toothbrush actually contacts the tooth is only a limited part of the long melamine sponge, most parts of the melamine sponge are used for brushing teeth. Will not be. That is, there is a problem that the running cost increases when using the melamine sponge toothbrush.
Further, when the melamine sponge is mounted, there is another problem that troubles at the time of exchanging the melamine sponge are complicated because the ends of the melamine sponge in the longitudinal direction must be wound using a string or the like.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a toothbrush using a melamine sponge that eliminates waste of the melamine sponge and can be easily replaced.

As a result of earnest research to solve the above problems, the inventor has conceived the following configuration.
That is, a toothbrush having a main body portion and a tooth contact portion detachably attached to the main body portion, the tooth contact portion including a melamine sponge and a holding body having a recess for holding the melamine sponge. The width dimension of the melamine sponge is formed to be wider than the inner width dimension of the concave portion of the holding body, and at least one of the inner bottom surface and the inner peripheral surface of the concave portion of the holding body is It is a toothbrush characterized by the nail | claw part for biting into the outer bottom face and outer peripheral surface of the said melamine sponge hold | maintained at the recessed part is provided. Thereby, since the whole surface of an upper end surface is utilized for a melamine sponge as a contact part with a tooth | gear, compared with a prior art, the wastefulness of a melamine sponge can be reduced significantly. Moreover, since the operation | work at the time of attaching a melamine sponge to the holding body which has a recessed part is also simplified very much, the replacement | exchange operation | work of a melamine sponge can be performed easily and in a short time.

Further, the claw portions on the inner bottom surface of the concave portion of the holding body are formed in a cone, and are provided at equal intervals in the circumferential direction by following the outer dimensions of the inner bottom surface of the concave portion of the holding body. It is preferable that
Further, the claw portion on the inner peripheral surface of the concave portion of the holding body is formed in two triangular shapes standing from the inner peripheral surface of the concave portion of the holding body, and two end sides forming the claw portion Among these, it is preferable that the end side on the inner bottom surface side of the concave portion of the holding body stands up in parallel with the inner bottom surface of the concave portion.
These can more reliably prevent the melamine sponge from dropping from the holding body having the recesses.

  The melamine sponge is also preferably formed in a columnar body. Thereby, since the amount of biting of the nail | claw part with respect to a melamine sponge can be equalized, the possibility of a melamine sponge drop-off can further be reduced. This is particularly effective when rotating the melamine sponge in an electric toothbrush.

According to the configuration of the toothbrush according to the present invention, since the entire upper end surface of the melamine sponge serving as the contact portion with the teeth is used as the contact portion with the teeth, the waste of the melamine sponge as a consumable member is wasted. As compared with the prior art, and the running cost can be reduced.
Moreover, since the operation | work at the time of attaching a melamine sponge to the holding body which has a recessed part can be performed easily in a short time, it is convenient.

It is a perspective view of the toothbrush concerning this embodiment. It is a perspective view of a holding body. It is a front view of a holding body. It is a top view of a holding body. It is a bottom view of a holding body. It is sectional drawing in the AA line in FIG. It is sectional drawing which shows the melamine sponge before mounting | wearing with a holding body and a holding body. It is sectional drawing which shows the state which assembled FIG. 7 and was set as the tooth contact part. It is a figure which shows the other example of a form of a holding body. (A) is a front view, a rear view, left and right side views, (B) is a plan view, (C) is a cross-sectional view along A-A in (B), and (D) is a perspective view.

  Hereinafter, embodiments of a toothbrush according to the present invention will be specifically described with reference to the drawings. As shown in FIGS. 1 and 2, the toothbrush 50 according to this embodiment includes a tooth contact that is detachable from a handle 12 that is a part of the main body 10 and a mounting portion 14 that is formed at the tip of the handle 12. Part 20. The tooth contact portion 20 includes a melamine sponge 30 and a holding body 40 having a recess 42 for holding the melamine sponge 30.

The mounting portion 14 provided at the distal end portion of the handle 12 constituting a part of the main body portion 10 has a columnar insertion body 16 erected at the central portion of the upper surface of the mounting portion 14, and is outside the upper surface of the mounting portion 14. The peripheral edge is formed in a form that matches the outer peripheral edge of the bottom surface of the holding body 40.
The tooth contact portion 20 is detachably attached to the main body portion 10 (attachment portion 14). As for the tooth contact portion 20, the melamine sponge 30 is detachably attached to the recess 42 of the holding body 40.

  As shown in FIGS. 2, 3, and 5, the lower portion of the holding body 40 is provided with a fitting portion 44 formed in a bottomed cylindrical body having an opening on the lower side. An insertion body 16 that protrudes from the mounting portion 14 that is the tip portion of the handle 12 can be inserted into the insertion portion 44. When the insertion body 16 is inserted into the insertion section 44, the insertion body 16 may be inserted into the internal space of the insertion section 44 while being elastically deformed. The inner diameter dimension of the fitting portion 44 in the present embodiment is formed to be slightly smaller than the outer diameter dimension of the fitting body 16. The central axis of the concave portion 42 and the central axis of the fitting portion 44 are located on the same axis.

  The concave portion 42 disposed on the upper surface side of the holding body 40 is formed by a bottom surface 46 having a circular shape in plan view and a side peripheral wall 48 erected from the outer peripheral edge of the bottom surface 46. As shown in FIGS. 2 and 4, claw portions 46 </ b> A are erected on the upper surface of the bottom surface 46 (inner bottom surface of the recess 42) with a necessary interval in the circumferential direction along the outer peripheral shape of the bottom surface 46. In the present embodiment, the claw portions 46A formed in a cone are arranged at eight locations on the upper surface of the bottom surface 46 in a circular arrangement.

  As shown in FIGS. 2 and 6, the side peripheral wall 48 has claw portions 48 </ b> A that protrude toward the inside of the concave portion 42 along the inner peripheral surface of the side peripheral wall 48 in the height direction of the side peripheral wall 48. Opened at several places. In the present embodiment, the claw portions 48A are arranged at three locations. The claw 48A has a triangular cross section in the direction orthogonal to the extending direction of the claw 48A. As apparent from FIG. 6, among the end sides 48 a and 48 b forming the claw portion 48 </ b> A, the end side 48 b on the bottom surface 46 side stands up in a direction orthogonal to the wall surface of the side peripheral wall 48. The part 48A is formed in a right triangle cross-sectional shape.

  The melamine sponge 30 attached to the holding body 40 having the recess 42 is formed in a cylindrical body as is apparent from FIGS. 1 and 7. Further, the outer diameter dimension which is the width dimension of the melamine sponge 30 is formed to be larger than the inner diameter dimension of the recess 42 which is the inner width dimension of the recess 42. That is, when the melamine sponge 30 is mounted in the recess 42 of the holding body 40, the melamine sponge 30 is mounted in a state in which it is elastically deformed in the reduced diameter direction. Therefore, the melamine sponge 30 mounted in the concave portion 42 of the holding body 40 attempts to restore the original shape of the melamine sponge 30 by the elastic force (restoring force) in the concave portion 42, so that the concave portion 42 of the holding body 40 is configured. It is attached to the side peripheral wall 48 that does not fall off easily.

  Further, in the present embodiment, the concave portion 42 of the holding body 40 has a melamine sponge 30 attached to the concave portion 42 on each of the upper surface of the bottom surface 46 that is the inner bottom surface and the inner side surface of the side peripheral wall 48 that is the inner peripheral surface of the concave portion 42. Claw portions 46A and 48A are provided so as to erode. As shown in FIG. 8, the claw portions 46 </ b> A and 48 </ b> A can exert a so-called wedge effect by biting into the outer bottom surface and the outer peripheral surface of the melamine sponge 30 attached to the recess 42. In particular, the claw portion 48A erected on the inner side surface of the side peripheral wall 48 extends toward the inside of the recess 42 as the end side 48a on the opening surface side (upper side) of the recess 42 approaches the bottom surface 46 side. In addition, an end 48b on the bottom surface 46 side (lower side) of the concave portion 42 forms a right-angled triangular cross section that is parallel to the upper surface of the bottom surface 46.

By adopting such a form of the claw portion 48A, when the melamine sponge 30 is pushed into the recess 42 of the holding body 40 and attached, there is no great resistance, and once the melamine sponge 30 is placed in the recess 42 of the holding body 40. If the sponge 30 is attached, a sufficient resistance to the force with which the melamine sponge 30 is about to be detached from the recess 42 can be obtained.
As described above, the arrangement of the claw portion 48A makes the melamine sponge 30 attached to the recess 42 more firmly, and the melamine sponge 30 is detached from the recess 42 even if an external force acts on the melamine sponge 30 during brushing. You can brush your teeth with confidence.

  Further, the claw portion 46A erected on the upper surface of the bottom surface 46 of the recess 42 bites into the outer bottom surface of the melamine sponge 30 and causes a slip (slip) with respect to the rotation direction of the melamine sponge 30 mounted on the recess 42 of the holding body 40. It acts to ensure prevention. Such a claw portion 46 </ b> A is particularly effective in the case of an electric toothbrush that can be rotationally driven with respect to the mounting portion 14 in which the tooth contact portion 20 is a part of the toothbrush 50. Also in the manual toothbrush 50, by disposing the claw portion 46 </ b> A, it is possible to obtain an effect of preventing the melamine sponge 30 attached to the concave portion 42 of the holding body 40 from being displaced, and the melamine sponge 30 becomes the concave portion 42 of the holding body 40. This is advantageous in that it can be prevented from leaving.

  As described above, the toothbrush 50 according to the present invention has been described based on the embodiment. However, the present invention is not limited to the above-described embodiment, and the technical invention of the present invention is applicable to other modified examples. May belong to a range. For example, in the present embodiment, the form in which the inner diameter dimension of the insertion portion 44 is formed to be slightly smaller than the outer diameter dimension of the insertion body 16 is described. An enlarged diameter portion (not shown) may be provided at the position, and a fitting recess (not shown) into which the enlarged diameter portion can be fitted may be provided in the fitting portion 44.

  Moreover, in this embodiment, although the melamine sponge 30 is formed in the cylinder, another shape can also be employ | adopted. If the melamine sponge 30 formed on the cone is used, it is convenient for removing dirt between teeth, and if the melamine sponge 30 formed on the frustum is used, the pressure applied to the surface of the tooth is increased. This is advantageous because it increases the dirt on the teeth.

  Further, as a specific example of the holding body 40 having the recess 42, the embodiment in which the shape in plan view is formed in a circle has been described. However, the shape in plan view of the recess 42 and the holding body 40 are both limited to a circular shape. However, it may be formed in a polygonal plan view shape. In addition, it is possible to adopt a form in which one of the concave portions 42 and the holding body 40 is formed in a circular shape in the plan view and the other planar shape is formed in a polygonal shape.

  Furthermore, in the present embodiment, the claw portions 46A, 48A are provided on both the upper surface of the bottom surface 46 that is the inner bottom surface constituting the concave portion 42 of the holding body 40 and the inner side surface of the side peripheral wall 48 that is the inner peripheral surface of the concave portion 42. As described with reference to FIG. 9, the claw portion 46 </ b> A is disposed only on the inner surface of the side peripheral wall 48 (not shown). The form of the holding body 40 can also be adopted. The part where the claw portions 46A, 48A are disposed, the number and shape of the claws 46A, 48A can be appropriately adjusted according to the usage pattern of the toothbrush 50.

DESCRIPTION OF SYMBOLS 10: Main-body part 12: Handle 14: Mounting part 16: Inserting body 20: Tooth contact part 30: Melamine sponge 40: Holding body 42: Recessed part 44: Inserting part 46: Bottom surface 48: Side wall 46A, 48A: Claw part 48a 48b: edge 50: toothbrush

Claims (4)

A toothbrush having a main body part and a tooth contact part detachably attached to the main body part,
The tooth contact portion comprises a melamine sponge and a holding body having a recess for holding the melamine sponge,
The width dimension of the melamine sponge is formed to be wider than the width dimension in the recess of the holding body,
At least one of the inner bottom surface and the inner peripheral surface of the concave portion of the holding body is provided with a claw portion for biting into the outer bottom surface and the outer peripheral surface of the melamine sponge held in the concave portion of the holding body. A featured toothbrush.   The claw portions on the inner bottom surface of the concave portion of the holding body are formed in a cone, and are provided at equal intervals in the circumferential direction in an arrangement following the outer dimension of the inner bottom surface of the concave portion of the holding body. The toothbrush according to claim 1, wherein: The claw portion on the inner peripheral surface of the concave portion of the holding body is formed in two cross-sectional triangular shapes standing from the inner peripheral surface of the concave portion of the holding body,
2. The end on the inner bottom surface side of the concave portion of the holding body among the two end sides forming the claw portion stands up in parallel to the inner bottom surface of the concave portion. 2. The toothbrush according to 2.   The toothbrush according to any one of claims 1 to 3, wherein the melamine sponge is formed in a columnar body.

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