JPH0657228U - toothbrush - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a toothbrush with excellent convenience in cleaning the back teeth and the back side of the teeth and having excellent usability. A toothbrush provided with a head portion 13 having a brush 21 implanted on the grip portion 11 with the neck portion 12 being inclined or curved, an extension line when the center line C of the grip portion 11 is extended in a side view. C is neck 12 and head 13
The inclination degree and the thickness of the neck portion 12 and the head portion 13 are defined so as to pass through the entire thickness range in the longitudinal direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a toothbrush, and more particularly, to a toothbrush which has excellent usability and is capable of easily brushing the back teeth and the back side of the teeth.

[0002]

[Prior art]

 When brushing teeth, it is essential to effectively clean the back teeth and the back of the teeth, but in order to clean the back teeth, the head part of the toothbrush must be inserted deep into the mouth, which makes cleaning the back teeth easy. It is known that whether or not it can be performed is greatly influenced by the shape of the head portion of the toothbrush and the like. Therefore, conventionally, various toothbrushes in which the shapes of the neck portion and the grip portion are modified, such as a toothbrush with a curved neck portion 12 and a toothbrush with a slanted head portion 13 as shown in FIGS. Proposed.

[0003]

[Problems to be solved by the device]

 However, even with the toothbrush with the curved neck portion 12 and the toothbrush with the head portion 13 tilted as described above, satisfactory usability and usability are not obtained, and further improvement is required. It was being done. Therefore, as a result of intensive studies and studies by the present inventors, the usability of the toothbrush does not depend only on the shape of the neck or head, but is greatly affected by the overall configuration including the grip. It was clarified. The present invention was made on the basis of the above-described clarified facts, and an object thereof is to provide a toothbrush that can easily brush back teeth and the like and is excellent in usability.

[0004]

[Means for Solving the Problems]

 To achieve the above object, the present invention provides a toothbrush in which a neck and a head are curved or inclined to be integrally formed with a grip, and a brush is planted on the head, and the grip of the grip is seen in a side view. The center line was formed so as to pass through the thickness range of the neck portion and the head portion.

[0005]

[Action]

 Since the toothbrush according to the present invention is configured such that the center line of the grip portion passes through the neck and the head in a side view, the relationship between the neck and the head with respect to the grip, and the shape and size of the neck and the like are determined by the back teeth. Suitable for brushing teeth, etc., easily brushing teeth such as back teeth, etc., and an excellent feeling of use can be obtained.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall side view of a toothbrush according to an embodiment of the present invention.

In the figure, 10 is a rod-shaped handle body, and the handle body 10 has a grip portion 11, a neck portion 12, and a head portion 13, and is integrally formed by resin injection molding or the like. The handle body 10 has a convex portion 10a protruding to the back surface (lower surface in the drawing) at the left end in the drawing, and a bulging portion 10b bulging to the front and back in the middle portion.

The gripping portion 11 is formed between the convex portion 10 a and the bulging portion 10 b (range A in the figure), and has a substantially arc shape that is convexly curved upward in the figure. The neck portion 12 is formed on the right side of the bulging portion 10b in the figure over a predetermined length (range B in the figure), and is inclined downward from the right end of the grip portion 11 at a slight inclination angle. The head portion 13 is continuous to the right side of the neck portion 12 in the drawing, and the brushes 21 are bundled into a plurality of hair bundles on the surface (the upper surface in the drawing) and are planted.

A centerline C connecting the midpoint of one end of the grip portion 11 and the midpoint of the other end has an extension line passing through the thicknesses of the neck portion 12 and the head portion 13. That is, in the side view of FIG. 1, the center line C of the grip portion 11 passes through the neck portion 12 and the head portion 13 over the entire longitudinal direction.

The boundary between the grip portion 11 and the neck portion 12 is usually thinner or thinner than the grip portion 11, is partitioned by the bulging portion 10b described above, and is used for such partitioning. For those that do not have the mark, the curvature is defined as the point of maximum or minimum curvature, or the point of inflection, and for those whose curvature cannot be clearly discerned, the gripping part 11 can be gripped long enough. It is set as the part of and is defined as the boundary between this part and the neck 12.

In the toothbrush of this embodiment, the neck portion 12 and the head portion 13 are inclined or curved with respect to the grip portion 11 to an appropriate degree, and the thicknesses of the neck portion 12 and the head portion 13 are also different. It is defined for the grip 11 in relation to the degree of inclination and the like. Therefore, a good feeling of use can be obtained, and the back teeth and the back surface of the teeth can be easily cleaned.

FIGS. 2, 3 and 4 are side views showing other embodiments of the present invention. The same parts as those in the above-mentioned embodiment are designated by the same reference numerals and the description thereof will be omitted. In the embodiment shown in FIG. 2, the head portion 13 is inclined, and in the embodiment shown in FIG. 3, the grip portion 11, the neck portion 12 and the head portion 13 are respectively curved and formed into a corrugated shape as a whole, and FIG. The head portion 13 is curved in the opposite direction to that of the above embodiment.

Also in these examples, since the neck 12 and the head 13 are appropriately inclined and curved, the back teeth and the back side of the teeth are easily polished, and a good usability is obtained. Needless to say, in each of the embodiments shown in FIGS. 1 to 4 described above, the grip portion 11 can be formed straight, and whether the head portion 13 is curved or inclined can be arbitrarily determined. In addition, these inclination directions can be arbitrarily determined.

As a reference, when the applicant investigated a conventional toothbrush, as shown in FIG. 5, FIG. 6, FIG. 7 and FIG. It was confirmed that it did not pass through the thickness of 12 and the head portion 13. Further, these conventional toothbrushes do not provide a satisfactory and satisfactory feeling of use, and cleaning of the back teeth is difficult.

[0015]

[Effect of device]

 As described above, according to the toothbrush according to the present invention, the degree of inclination and the thickness of the head portion and the neck portion with respect to the grip portion are regulated so that a good feeling of use can be obtained. The effect is that the back side of the can be easily polished.

[Brief description of drawings]

FIG. 1 is a side view of a toothbrush according to an embodiment of the present invention.

FIG. 2 is a side view of a toothbrush according to another embodiment of the present invention.

FIG. 3 is a side view of a toothbrush according to another embodiment of the present invention.

FIG. 4 is a side view of a toothbrush according to another embodiment of the present invention.

FIG. 5 is a side view of a conventional toothbrush.

FIG. 6 is a side view of another conventional toothbrush.

FIG. 7 is a side view of another conventional toothbrush.

FIG. 8 is a side view of still another conventional toothbrush.

[Explanation of symbols]

 10 Handle main body 11 Grip portion 12 Neck portion 13 Head portion 21 Brush C Center line

Claims (1)

[Scope of utility model registration request] 1. A toothbrush integrally formed by inclining or curving a head portion on which a brush is applied to a grip portion through a neck portion, wherein a center line of the grip portion has a thickness of the neck portion and the head portion in a side view. A toothbrush characterized by being molded so as to pass within the range.