JP3022538U - toothbrush - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a toothbrush capable of applying bristles of a hair-implanted portion to each side of a tooth in a comfortable posture with the elbow lowered as vertically as possible. A first divisional body (1) having a handle (3) and a second divisional body (2) having a flocked portion (6) are provided. First axis X along the handle 3
1 intersects with the second axis X2 along the connecting shaft 7. Connection hole 5
Has a substantially star-shaped end view with six corners that can be selectively fitted to the connecting shaft 7. The relative postures of the two divided bodies 1 and 2 in a state where the hair axis Y3 along the hair 6a is not parallel to the plane formed by the first and second axes X1 and X2 and faces six appropriate directions around the second axis X2. Can hold.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a toothbrush. More specifically, a first split body having a handle and a second split body having a bristle portion are configured to be connectable via a connecting portion having a connecting shaft, and the first split body is provided along the longitudinal direction of the handle. The present invention relates to a toothbrush in which one axis intersects with a second axis along the connecting axis and the connecting section is configured so that the bristle-implanting section can be switched between two directions opposite to each other around at least the second axis.

[0002]

[Prior art]

 As a conventional toothbrush as described above, for example, the one described in Japanese Utility Model Laid-Open No. 2-6531 is known. According to this conventional toothbrush, the bristle tip of the flocked portion is connected in such a manner that the tip ends of the bristles are directed only to the inner angle side and the outer angle side formed by the first and second axes. Make up part.

By the way, the most comfortable posture when brushing teeth is a posture in which the toothbrush is projected obliquely upward with the elbow lowered. Therefore, when the elbow is lowered using the same conventional toothbrush with the inner angle side formed by the first and second axes directed downward as much as possible, the second axis comes to line the direction of the back teeth, but the bristle axis It becomes more difficult to brush the side surface of the tooth because it faces more vertically. Therefore, according to the conventional toothbrush, it is very difficult to carefully polish all the surfaces of the tooth without raising the elbow to some extent.

[0004]

[Problems to be solved by the device]

 In view of such conventional techniques, an object of the present invention is to provide a toothbrush capable of applying bristles of bristles to each face of a tooth in a comfortable posture with the elbow lowered as vertically as possible.

[0005]

[Means for Solving the Problems]

 To achieve the above object, a feature of the toothbrush according to the present invention is that a first split body having a handle and a second split body having a bristle implant can be connected via a connection portion having a connection shaft. The first axis along the longitudinal direction of the handle intersects with the second axis along the connecting axis, and the flocked portion can be switched between two directions opposite to each other around at least the second axis. In the state where the bristle axis along the bristle of the flocked portion is not parallel to the plane formed by the first axis and the second axis and is oriented in an appropriate direction around the second axis, The connecting portion is configured so that the relative posture of the divided bodies can be maintained.

[0006] When the elbow of the hand holding the toothbrush is lowered to take a comfortable posture while the inner angle side formed by the first and second axes is directed downward as much as possible, the second axis becomes substantially aligned with the direction in which the back teeth are arranged. . Then, while taking this comfortable posture, the two split bodies are oriented with the bristles in the proper direction around the second axis with respect to the handle, that is, in the direction in which the bristles of the bristles hit each tooth surface as perpendicularly as possible. Hold the relative posture of.

In addition, the connecting portion may be configured such that the appropriate direction takes two directions along a pair of axes that are plane-symmetric with respect to at least the plane. By reversing the directions of the flocked parts in two plane-symmetrical directions, it is possible to brush the left and right and top and bottom of the teeth. Moreover, because of the plane symmetry, the flocked parts are both right-handed and left-handed. The condition that the hairs of the dog touch the teeth is the same.

Particularly, it is preferable that the longitudinal direction of the flocked part is substantially along the second axis. If the crossing angle of the first and second axes is set appropriately, it is possible to easily brush the front and back of the back teeth by reversing the direction of the hair axis by 180 degrees in the opposite direction around the second axis. It is because

Further, it is possible to form the connecting portion so that the bristle shaft is oriented in an appropriate direction by inserting and removing the connecting shaft, and to house the portion on the side of the bristle implant part of the second divided body. The handle may be formed as an effective tubular shape. For example, the connecting portion may be configured by a connecting shaft having a substantially diamond shape in end view and a connecting hole having a substantially star shape in end view.

[0010]

[Embodiment of device]

 Next, an embodiment of the present invention will be described in more detail with reference to FIGS. The toothbrush of this embodiment is formed as a portable toothbrush including a first divided body 1 and a second divided body 2. While carrying the second divided body 2 inside the first divided body 1, the first divided body 1 and the second divided body 2 are used in combination when used.

The first divided body 1 is formed by fixing a connection block 4 for connection to a handle 3 having a substantially rectangular cross section. The connecting block 4 is provided with a substantially star-shaped connecting hole 5 that constitutes one of the connecting portions of the two divided bodies 1 and 2. The handle 3 and the connecting block 4 are combined so that the first axis X1 along the longitudinal direction of the handle 3 and the second axis X2 which is the longitudinal axis of the connecting hole 5 intersect. The second shaft X2 also corresponds to a shaft along a connecting shaft 7 which will be described later and is fitted in the connecting hole 5.

The above-mentioned second divided body 2 is provided with a hair-implanted portion 6 in which a large number of hairs 6 a are planted at the tip portion thereof, and a connecting shaft 7 that fits into the above-mentioned connecting hole 5 at its root portion. Is equipped with. The connecting hole 5 and the connecting shaft 7 function as a connecting portion that connects the connecting shaft 5 and the connecting shaft 7 by inserting and removing the connecting hole 5 and the connecting shaft 7 in the direction of the second shaft X2. Further, in this connected state, the second axis X2 described above coincides with the axis along the longitudinal direction of the flocked portion 6. In other words, it means that the second axis X2 orthogonal to the hair axis Y3 along the hair 6a in the hair transplant part 6 intersects the first axis X1 which is the longitudinal axis of the first split body 1. Here, the plane formed by the first axis X1 and the second axis X2 is along the long side of the cross section of the handle 3.

The inside of the handle 3 is formed into a tubular shape capable of accommodating at least the hair-implanted portion 6. Further, in the portable state in which the bristle implanting portion 6 is housed, the inner fitting portion 2a located at the base of the second split body 2 is fitted to the lower inner surface of the handle 3.

As shown in FIG. 2B, the connecting hole 5 is located in a plane formed by the first axis X1 and the second axis X2, and is a reference vertical direction orthogonal to the second axis X2. With respect to both the axis Y1 and the reference horizontal axis Y2 orthogonal to the reference vertical axis Y1 and the second axis X2, a substantially star-shaped end view vertically formed in a substantially line-symmetrical manner is formed. On the other hand, as shown in FIG. 2 (c), the connecting shaft 7 has a bristle axis Y3 which is orthogonal to the second axis X2 and extends along the bristle 6a, and the bristle axis Y3 and the second axis X2. It has a substantially rhombic shape that is vertically long and is substantially symmetric with respect to both the transverse axes Y4 of the hairs that are orthogonal to each other.

The connecting hole 5 is provided with six corner portions composed of first to sixth corners 5a to 5f so that the connecting shaft 7 can be fitted in six postures. As for these corner portions, a pair of diagonally corresponding corner portions are used in combination as shown by the wavy line in FIG. The bristle axis Y3 is made to coincide with the reference vertical axis Y1 passing through the first and second corners 5a and 5b to invert the hair-implanted portion 6 in two directions, and the first inclination passing through the third and fourth corners 5c and 5d. The bristle axis Y3 is made to coincide with the axis Y5 and the second inclined axis Y6 passing through the fifth and sixth hexagons 5e and 5f, so that the bristle-implanting portion 6 is inverted in two directions. And can be selectively engaged. In other words, the above-mentioned proper direction in which the hair axis Y3 should be oriented is in two directions along a set of axes Y5 and Y6 which are plane-symmetric with respect to the plane formed by the first and second axes X1 and X2. In addition, the same applies to the direction along the same plane. With such a line-symmetrical configuration of the connecting hole 5 and the connecting shaft 7, it is possible to eliminate the distinction between right-handed and left-handed manufactured products. In the figure, the inner corner surface 4a of the connecting block 4 is an outer surface located on the inner corner side of the corner formed by the first axis X1 and the second axis X2.

FIG. 3 is a diagram showing a usage state of the toothbrush according to the above configuration, in which the holding hand 3 is held by the hand G, and the outer surface So of the left tooth Pl of the lower tooth Tb is brushed by the bristles 6 a of the bristle implanting portion 6. Is shown. In this example, the holding hand 3 is grasped by the right hand, and the inner corner surface 4a of the connecting block 4 is directed toward the oral cavity side. In this state, the front corner 7a of the connecting shaft 7 corresponding to the tip side of the bristles 6a is aligned with the third triangle 5c of the connecting hole 5, and the other corner of the connecting shaft 7 is changed to the fourth corner 5d. The connecting hole 5 and the connecting shaft 7 are fitted to each other, and the relative postures of the first and second divided bodies 1 and 2 are maintained.

In this example shown in the figure, while maintaining a comfortable posture with the elbow of the hand G holding the three holding hands held down, the hair axis Y3 is almost perpendicular to the plane of the tooth of the same part, In other words, the horizontal axis Z axis of the mouth and the hair axis Y3 can be maintained substantially parallel. Further, also in the following other examples, it is possible to bring the bristles 6a into proper contact with the teeth in a comfortable posture with the elbows almost lowered. In the same combination state, the lower surface Sb of the left portion Pl of the lower tooth Tb and the inner surface Si of the right portion Pr of the upper tooth Tu and the lower tooth Tb can be further easily polished.

On the other hand, when the connecting shaft 7 is fitted to the third and fourth squares 5c and 5d and the front corner 7a is matched with the fourth square 5d, the left teeth Pl of the upper teeth Tu and the lower teeth Tb are Like the inner surface Si, the outer surface So of the right portion Pr can be polished. Further, in the same state, the outer surface So of the front portion Pf of the upper tooth Tu and the lower tooth Tb can also be polished.

Next, when the connecting shaft 7 is fitted to the fifth and sixth hexagons 5e and 5f and the front angle 7a is made to coincide with the fifth corner 5e, the left portion Pl and the right portion of the lower tooth Tb are The upper surface St of Pr can be polished. Similarly, the inner surface Si of the front portion Pf of the lower tooth Tb can be polished.

On the other hand, similarly, when the connecting shaft 7 is fitted to the fifth and sixth hexes 5e and 5f and the front corner 7a is aligned with the sixth hex 5f, the left portion Pl of the upper tooth Tu is Also, the lower surface Sb of the right portion Pr can be polished. In addition, the inner surface Si of the front portion Pf of the upper tooth Tu can be polished.

When the connecting shaft 7 is fitted to the first corner 5a and the second corner 5b in the same figure, the above-mentioned bristle axis Y3 is the reference vertical axis included in the first axis X1 and the second axis X2. It will be parallel to Y1. Therefore, in order to bring the bristles 6a of the flocked part 6 into contact with the teeth in an appropriate state, the first divided body 1 and the second divided body are divided from the four corners of the third, sixth, fourth, pentagonal 5c, 5f, 5d, 5e. It suffices if the body 2 is switchable in four states. If the first and second corners 5a and 5b are also provided in the connecting block 4, the conventional toothbrush can be used at the same time, and the range of choices of the brushing method can be expanded.

Next, the possibility of another embodiment of the present invention will be described. In the second embodiment of the present invention shown in FIG. 4, the same members as the members in the previous embodiment are designated by the same reference numerals. The difference from the above-mentioned form is that a connecting shaft 7 having a different shape is provided on the side of the first divided body 1 having the handle 3, and the whole toothbrush is not configured to be portable.

In the present embodiment, as shown in FIG. 3A, a large number of grooves are provided on the connecting shaft 7 along the longitudinal direction thereof at equal pitches in the circumferential direction. On the other hand, the connecting hole 5 into which the connecting shaft 7 is fitted is provided with a large number of grooves along its longitudinal direction at an equal pitch in the circumferential direction as shown in FIG. The connecting shaft 7 can be fitted into the connecting hole 5 so that the reference vertical axis Y1 that belongs to the plane formed by the axis X1 and the second axis X2 and that is orthogonal to the second axis X2 and the hair axis Y3 coincide. As is clear from the drawings, in this aspect, the direction in which the hair shaft 6a is oriented can be set more finely than in the previous aspect. Further, since the grooves formed in the connecting hole 5 and the connecting shaft 7 have an equal pitch, the above-mentioned appropriate direction in which the hair axis Y3 should be oriented is symmetrical with respect to the plane formed by the first and second axes. Equivalent to the direction along each axis of the set.

[0024]

[Effect of device]

 As described above, according to the toothbrush according to the present invention, it is possible to apply the bristles of the hair-implanted portion to each surface of the tooth as vertically as possible in a comfortable posture with the elbow lowered.

Further, by configuring the connecting portion so that the appropriate direction takes two directions along two axes that are plane-symmetric with respect to at least the plane, it is possible to eliminate the distinction between right-handed and left-handed toothbrushes. It has become possible to promote simplification.

In the above configuration, the whole is bent and bulky during use, but the bent part is configured by inserting and inserting the connecting part and accommodating the part on the flocked part side in a cylindrical handle. It has become possible to store the toothbrush in a state that it is divided and not bulky.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a toothbrush according to the present invention.

2A is a longitudinal sectional view showing a state in which a second divided body is housed in a first divided body, FIG. 2B is a second axial direction end view of a connecting block, and FIG. 2C is a second divided body. It is the end view which looked at from the connecting shaft side.

FIG. 3 is a perspective view showing a use state of the toothbrush according to the present invention.

FIG. 4A is a view corresponding to FIG. 1 in another embodiment,
(B) is an end view of the second divided body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st division body 2 2nd division body 3 Handle 4 Connection part 6 Hair transplant part 6a Hair 7 Connection axis X1 1st axis X2 2nd axis Y3 Hair axis Y5, Y6 A set of axis | shafts which become plane symmetry

Claims (4)

[Scope of utility model registration request] 1. A first divisional body (1) having a handle (3) and a second divisional body (2) having a hair-implanting portion (6) via a connecting portion having a connecting shaft (7). The first axis (X1) along the longitudinal direction of the handle (3) and the second axis (X2) along the connection axis (7) intersect each other so that the bristle portion (6) can be connected. In the toothbrush in which the connecting portion is configured to be switchable in at least two directions opposite to each other around the second axis (X2), the bristles (6) of the bristle implanting portion (6).
The hair axis (Y3) along a) is non-parallel to the plane formed by the first axis (X1) and the second axis (X2), and the second axis (X3).
2) The two divided bodies (1,
2) The connecting portion (4,
The toothbrush which comprised 7). 2. The toothbrush according to claim 1, wherein the appropriate directions are two directions along a set of axes (Y5, Y6) which are plane-symmetric with respect to at least the plane. 3. The toothbrush according to claim 2, wherein a longitudinal direction of the flocked portion (6) is substantially along the second axis (X2). 4. The connecting portion (4, 7) is configured so that the connecting shaft (7) is inserted and removed and fitted so that the hair shaft (Y3) is oriented in an appropriate direction, and the second divided body (2) is formed. The toothbrush according to claim 3, wherein the handle (3) is formed as a tubular shape capable of accommodating a portion of the bristling part (6) side.