JPH05115321A - Electric tooth brush - Google Patents

Abstract

PURPOSE:To achieve effective cleaning between teeth and the gum by a bath brushing. CONSTITUTION:A driving mechanism is provided to cause a reciprocal linear motion in the axial direction of an output section and a tooth brushing body 6 is arranged at the output section located at one end of a cylindrical body housing the driving mechanism. The tips of bristles 61 planted on the tooth brushing body 6 are cut almost at 45 to the direction of planting so as to be made higher on the width-wise one end side than on the other end side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric toothbrush which axially reciprocates a toothbrush body.

[0002]

2. Description of the Related Art In conventional tooth brushing and electric tooth brushing, the height of the bristle is formed substantially evenly in each portion.

[0003]

In this case, although it is suitable for rolling polishing in which the tooth brush is oscillated and rotated, the tooth brush is reciprocally driven in the axial direction of the tooth brush so that the tooth brush can be moved between the tooth and the gum. It is not suitable for cleaning deep inside. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electric toothbrush capable of effectively cleaning between teeth and gums by brushing a bath.

[0004]

DISCLOSURE OF THE INVENTION According to the present invention, however, a drive mechanism for causing an output part to perform a reciprocating linear motion in the axial direction, and an output part disposed at one end of a tubular main body accommodating the drive mechanism. In the electric toothpaste consisting of the toothbrushed body,
The bristle planted on the tooth-brushing body is characterized in that its tip is cut at approximately 45 degrees with respect to the flocking direction, and one end side in the width direction is made higher than the other end side.

According to the present invention, the tip of the tall bristle is located between the tooth and the gum when the tip surface of the bristle is placed along the surface of the tooth.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. It is connected to an elongated cylindrical main body 1 containing a storage battery 5 and a motor 40, and a drive shaft 4 protruding from the tip of the main body 1. As shown in FIGS. 2 to 4, a motor 40 and a cam block 41 are mounted inside the main body 1 having covers 11 and 12 attached to the upper end and the lower end, respectively. The frame 13 and the battery holder 50 in which the storage battery 5 is mounted are housed. The drive shaft 4 is also supported by the frame 13, and the cam block 4
It is connected to the motor 40 via 1. In the figure, reference numeral 15 is a waterproof rubber for waterproofing the tip of the main body 1, and 2 is a switch, which performs a seesaw operation by alternately operating a push-on switch 22 and a push-off switch 23 arranged on the front surface of the main body 1. It is formed of a switch plate 29 and a contact portion (not shown) that is turned on and off according to the movement of the switch plate 29.

The cam block 41 converts the rotation of the motor 40 into a reciprocating linear motion of the drive shaft 4. As shown in FIG. 5, the cam block 41 is supported by a shaft 47 whose both ends are supported by a holder 13 and is supported by the motor 40. Of the face gear 43 that meshes with the pinion 42 mounted on the output shaft of the, the eccentric shaft 44 formed integrally with the face gear 43, and the eccentric shaft 44.
And a cam follower 46 that engages with the cam follower 46 that positions the eccentric shaft 44 inside the laterally elongated hole.
It is provided at the lower end of the drive shaft 4 which is axially slidably mounted on the holder 13.

When the motor 40 rotates the eccentric shaft 44 via the pinion 42 and the face gear 43, the eccentric shaft 44
Causes the cam follower 46 and the drive shaft 4 to reciprocate up and down. Since the drive shaft 4 reciprocates in the axial direction, it is necessary to mount the drive shaft 4 to the holder 13 via a bearing. Here, the rolling bearings 81 and 81 mounted on the holder 13 are used. The drive shaft 4 is supported.

Rolling bearing 8 supporting the tip side of drive shaft 4
As shown in FIG. 6, reference numeral 1 denotes an annular retainer 82, balls 83 respectively arranged in a plurality of axial grooves 84 formed in the retainer 82, and a disposition portion of the balls 83 in the retainer 82. When the drive shaft 4 reciprocates in the axial direction, the ball 8
3 is made movable in the axial direction.

A tooth brushing body 6 is detachably attached to the tip of the drive shaft 4 which makes a reciprocating linear motion. The tooth-brushing body 6 is composed of a shaft portion 60 and bristles 61 that are planted on the side surface of the tip portion thereof.
As shown in FIG. 1, the tip end thereof is cut at an angle of approximately 45 degrees with respect to the flocking direction, so that one end side in the width direction is made higher than the other end side.

If the tooth-splitting body 6 is connected to the tip of the drive shaft 4 projecting from one end of the main body 1 and the motor 40 is operated, the tooth-spattering body 6 makes a fine reciprocating vibration in its axial direction. However, at this time, since the tip end surface of the bristle 61 is slanted, when the entire tip end surface of the bristle 61 is made to conform to the tooth surface, as shown in FIG. The tip of 61 hits the portion between the tooth and gum from an oblique direction.

In the embodiment shown in FIG. 8, a surface S, which is parallel to the tip surface of the bristle 61, is formed on the surface of the shank 60 of the tooth brushing body 6 on the opposite side of the bristle 61 from the flocked surface. In this case, when the tip surface of the bristle 61 is brought into contact with the tooth surface, the surface S becomes parallel to the tooth surface, so that it becomes easy to fit the entire tip surface of the bristle 61 into the tooth surface. ..

In the embodiment shown in FIG. 9, the display portion 16 is provided on the surface of the main body 1 at an angle of approximately 90 degrees with respect to the front surface of the bristle 61, and the display portion 16 is provided with an angle of approximately 90 degrees in the opposite direction to the front surface of the bristle 61. Switch 2 at the eggplant
Is shown. In this case, the bristle 61
When the cleaning is performed so that the entire front end surface of the tooth follows the surface of the tooth, the display unit 16 is projected on the mirror, and it is possible to easily confirm whether or not the bristle 61 is in contact with the tooth in the optimum state. The position of the switch 2 can also be used to confirm the degree of contact of the bristles 61 with the teeth by the feeling of a finger or the like.

In the embodiment shown in FIG. 10, the outer peripheral surface of the main body 1 is provided with a plurality of recessed grooves 17 for finger hooking. When the fingers are hooked in the recessed grooves 17 and gripped, the entire front end surface of the bristle 61 is This is to make it easy to hit the tooth surface. It should be noted that it is preferable that these grooves 17 are provided at a position forming an angle of approximately 90 degrees with respect to the tip end surface of the bristle 61.

In the embodiment shown in FIG. 11, a grip portion 18 which is rotatable about an axis is provided on the outer peripheral surface of the main body 1, and a groove 17 for finger hooking is formed on the outer surface of the grip portion 18. Set the rotation position of the grip 18 to the lock handle 1
9 is engaged with any one of a plurality of engaging grooves 180 formed in the grip 18 so that it can be fixed at an appropriate position. Grip 1 with a groove 17
8 and the bristle 61 front end surface can be adjusted in positional relationship.

In addition, the tooth brushing body 6 shown here does not directly bristle the bristle 61 on the shaft portion 60, but FIG.
As shown in FIG. 2, the bristle 61 is provided via a flocking table 62 that is detachable from the shaft portion 60. The hair transplantation table 62 here is the shaft portion 6
It is attached to the shaft portion 60 by an engagement rib 63 that is slidably engaged with an engagement groove 63 that is formed in 0 in the direction orthogonal to the axial direction, and reverses its direction by reversing. In this state, it is attached to the shaft portion 60. Depending on whether the right (upper) tooth in the mouth is brushed or the left (lower) tooth is brushed, or whether it is held with the right hand or the left hand, the bristle 61 and the flocking table 62 are inverted, and the tip surface of the bristle 61 is reversed. Can be switched to hit the teeth properly.

As shown in FIGS. 13 and 14, the hair transplant table 6
A shaft 65 may be provided on the shaft 2, and a shaft hole 66 may be formed in the shaft portion 60 to allow the shaft 65 to rotate, and the bristles 61 and the flock 62 may be rotated around the shaft 65 to be inverted. .. In the figure, 67 is an engaging protrusion for positioning the bristle implant 62 and the shaft portion 60 at two inverted positions, and 68 is an engaging hole with which the engaging protrusion 67 elastically engages.

The tooth brush bodies 6 shown in FIG.
The bristles 61 are flocked in two directions with a certain degree so that the tip surfaces of the bristles 61 in the two directions are arranged in the same plane. In this case, as shown in FIG. 16, the upper and lower teeth can be cleaned at the same time, and there is no need to reverse the bristles 61.

[0019]

As described above, according to the present invention, the bristle having the bristles planted thereon has its tip cut at an angle of approximately 45 degrees with respect to the flocking direction so that one end in the width direction is higher than the other end. Therefore, when the tip of the bristle is made to conform to the surface of the tooth, the tip of the tall bristle is located diagonally between the tooth and the gum. It is possible to effectively clean the boundary between the tooth and the gum, which may cause periodontal disease.

[Brief description of drawings]

FIG. 1 shows a tooth brush according to an embodiment of the present invention, in which (a) is a plan view and (b) is a front view.

FIG. 2 is a cutaway perspective view.

FIG. 3 is a cross-sectional view of the main body.

FIG. 4 is a sectional view of the main body.

FIG. 5 is an exploded perspective view of a drive block.

FIG. 6 is an exploded perspective view of a bearing.

FIG. 7 is a view showing an operation, (a) is a side view and (b) is a front view.

FIG. 8 shows another embodiment, in which (a) is a plan view and (b) is a plan view.
Is a front view.

FIG. 9 shows another embodiment, (a) is a plan view, and (b) is a plan view.
Is a cross-sectional view and (c) is a rear view.

FIG. 10 shows still another embodiment, (a) is a plan view, (b) is a sectional view, and (c) is a rear view.

FIG. 11 shows another embodiment, (a) is a plan view,
(b) is a sectional view and (c) is a rear view.

FIG. 12 is a perspective view showing the above tooth-splitting body.

13A and 13B show another tooth brushing body, wherein FIG. 13A is an exploded perspective view, and FIG. 13B is a perspective view showing the back side of the hair transplantation table.

FIG. 14 shows the same operation as the above, and FIGS. 14 (a) and 14 (b) are perspective views.

FIG. 15 shows a tooth brush body according to still another embodiment,
(a) is a plan view and (b) is a front view.

FIG. 16 is a side view showing the above-described operation.

[Explanation of symbols]

 4 Drive shaft 6 Toothed body 61 Bristle

Claims (9)

[Claims] 1. An electric motor comprising: a drive mechanism for causing an output section to perform a reciprocating linear motion in an axial direction; and a tooth-splitting body provided at the output section at one end of a cylindrical main body containing the drive mechanism. In tooth brushing, the bristle that is planted on the tooth brush body is characterized in that the tip end thereof is cut at approximately 45 degrees with respect to the flocking direction, and one end side in the width direction is made higher than the other end side. Brushing teeth. 2. The electric toothbrush according to claim 1, wherein a surface of the tooth brushing body opposite to the bristle implantation surface is substantially parallel to the bristle tip surface. 3. The electric toothbrush according to claim 1, wherein a display portion is provided at an angle of approximately 90 degrees with respect to the bristle tip surface. 4. The electric toothbrush according to claim 1, further comprising a switch operating portion formed at an angle of approximately 90 degrees with respect to the bristle tip surface. 5. The electric toothbrush according to claim 1, wherein the main body is provided with a finger hook portion for a finger holding the main body. 6. The electric toothpaste according to claim 1, wherein the main body is provided with a grip portion rotatable about its axis. 7. The electric toothbrush according to claim 1, wherein the bristles are planted in two directions forming 90 degrees from each other. 8. The electric tooth dusting device according to claim 1, wherein the bristle bristle implanting portion is detachable and is reversible with respect to the axial direction of the main body. 9. The electric tooth duster according to claim 1, wherein the bristle bristle implanting portion is rotatable about the bristle implantation direction as an axis.