JP3827339B2 - toothbrush - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a toothbrush and is configured to efficiently increase the toothbrushing effect by oscillating the brush portion without the need for complicated brushing.
[0002]
[Prior art]
In conventional toothbrushes, it is known that the brush part is fixed integrally with the handle, or the brush part is made a part so that the brush part can be replaced with the handle. The brush part and the handle are fixed integrally. Therefore, in the manual toothbrush, the sliding angle of the brush portion with respect to the tooth row has to be adjusted by hand.
[0003]
[Problems to be solved by the invention]
In conventional toothbrushes, when brushing teeth laterally, the brush portion slides in a tangential direction with respect to the curved dentition, and the brush surface can be separated from the teeth, or the wraparound portion can be removed. It was also difficult to polish. Therefore, in order to improve the tooth brushing effect, it is necessary to devise ways of brushing, such as vertical brushing and circle brushing, and when brushing the back teeth, the mouth must be widened. It was.
[0004]
The toothbrush of the present invention is structured so that the brush portion is in effective contact with the curved surface of the dentition and the gums in a normal manner, and the brush tip can easily reach between the teeth and the concave portion of the caries so that the toothbrushing effect is achieved. It was conceived to help improve dental health.
[0005]
[Means for Solving the Problems]
The toothbrush of this invention
A taper surface 5 having a surface on which the brush 4 is implanted and a back surface, and an upwardly open tapered surface 5 that restricts the swing angle at the center of both sides in the longitudinal direction of the back surface and a surface substantially perpendicular to the above surface. A pair of dents 6 is formed, the brush part 1 having the shaft hole 8 formed in the vertical surface , the wire is bent into a U shape, and both parallel tip parts thereof are bent at substantially right angles in the same direction. The connecting portion 2 is formed with a pivot shaft 7 that is bent substantially perpendicularly to the direction and inserted into the shaft hole 8, and a handle portion that holds the rear end portion of the connecting portion 2 bent in a U shape. ing.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
As shown in the side view of FIG. 1 and the plan view of FIG. 2, the toothbrush of the present invention is a connection in which the brush portion 1 in which the brush 4 is implanted and the wire that holds the brush portion 1 swingably is bent. The body 2 and the handle 3 that is inserted and held at the rear end of the connecting body 2 are constituted.
[0007]
A brush 4 is implanted on the surface of the brush portion 1, and a taper surface 5 that restricts the swing angle and a surface that is substantially perpendicular to the surface of the brush portion 1 are disposed on both sides of the center of the back surface of the brush portion 1. a pair of recesses 6 are formed with the vertical plane of the recess 6, the shaft hole 8 for inserting the pivot axis 7 of the joint 2 is Akerare sideways.
[0008]
As shown in FIG. 2, the connecting body 2 is formed by bending the wire into a U shape, bending both parallel tip portions thereof at substantially right angles, and bending them inward at substantially right angles to form a swing shaft 7. A projection 9 bulging outward is formed in the vicinity of the rear part.
[0009]
Further, as shown in FIG. 1, the swing shaft core 7 at the tip of the connection body 2 is engaged with the shaft hole 8 of the recess 6 of the brush portion 1 to support the brush portion 1 so that it can swing. In addition, the intermediate portion of the connection body 2 is bent in a mountain shape or an arc shape corresponding to the swing angle of the brush portion 1.
[0010]
The handle portion 3 held by hand is formed with an insertion hole 10 for inserting the rear portion of the connection body 2 and a small hole 11 formed in a lateral direction from the insertion hole 10. The small hole 11 of the portion 3 is engaged to hold the connection body 2.
[0011]
When an elastic wire is used as the connection body 2, during mounting, an outward force is applied to the protrusion 9 to engage with the small hole 11 of the handle 3, and the tip end of the swing shaft 7 is inward. By applying force, the swing shaft 7 can be engaged with the shaft hole 8 of the brush portion 1 in a click stop shape. When disassembling, if the connecting body 2 is pulled out from the handle 3, the tip of the connecting body 2 Can open and the brush portion 1 can be easily attached and detached or replaced.
[0012]
In the toothbrush according to the present invention, the brush portion 1 can swing within the range of the swing angle θ limited by the tapered surface 5 of the recess 6. Since the force on the row surface is applied to the tooth surface via the swing mechanism at the center of the brush portion 1, the brush surface can be in close contact with the tooth row surface and rubbed.
[0013]
Further, when the handle portion 3 is slightly reciprocated in the lateral direction, the brush portion 1 can perform a seesaw motion within the swing angle θ to brush the teeth.
[0014]
【The invention's effect】
As is clear from the description based on the above embodiments, according to the toothbrush of this description, the brush portion 1 is held swingably with respect to the handle portion 3 so that the brush surface has close adhesion to teeth and gums. The brushing portion 1 can be swung so as to correspond to the shape of the dentition or gum, and the effect of brushing can be improved.
[0015]
Further, the brush portion 1 performs seesaw motion as shown by dotted lines a and b by a slight reciprocating motion of the handle portion 3 in the lateral direction, so that the brush end portion is pushed and pulled out into the recesses such as the interdental or carious teeth. Repeatedly removes plaque and eating candy efficiently. Furthermore, since the brush surface moves not only by rubbing but also by squeezing and striking, the efficiency of scraping off the dirt on the tooth surface is improved, and at the same time, the gums can be effectively massaged.
[0016]
Therefore, the same effect can be obtained even if polishing in the horizontal direction, regardless of vertical polishing or circular polishing.
[0017]
Furthermore, by preparing different types of brush parts 1 with different shapes, sizes, brush properties, etc., and removing them from the connector 2 and replacing them, you can use them properly according to the situation in the mouth and perform proper tooth brushing. Further, when the brush portion is worn, only the used brush portion is discarded and replaced with a new brush portion.
[Brief description of the drawings]
FIG. 1 is a side view showing an embodiment of a toothbrush of the present invention,
FIG. 2 is a plan view of the embodiment of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Brush part 2 Connection body 3 Handle part 4 Brush 5 Oscillation angle restriction taper surface 6 Indentation 7 Oscillation shaft core 8 Shaft hole 9 Protrusion
10 Insertion hole
11 Small hole θ Swing angle

Claims (1)

A pair having a surface in which a brush is implanted and a back surface, and having an upwardly open tapered surface that restricts a swing angle and a surface that is substantially perpendicular to the surface at substantially the center of both longitudinal sides of the back surface. And a brush portion having a shaft hole in the vertical surface ,
A wire bending the wire in a U-shape, bending both parallel tips at a substantially right angle in the same direction, bending the wire inward at a substantially right angle, and forming a swing shaft that is inserted through the shaft hole;
A handle for holding the rear end of the connection portion bent in a U-shape;
The toothbrush characterized by comprising.

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