JPH08224126A - Power-driven rotating toothbrush - Google Patents

Abstract

PURPOSE: To lighten user's economic burden by the reasonable constitution of the tooth cleaning process and the toothbrush used therefor. CONSTITUTION: A semicircular groove is formed inside a brush attachment section A of a power-driven rotating toothbrush main body; a brush shaft 4 having a brush 7 and protrusions 5, 6 at both ends, is installed into the semicircular groove; a neck N extending from the brush attachment section A is formed into a curved L; and the handle B of the toothbrush main body and the neck N are so designed as to be removable from each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric rotary toothbrush, and more particularly to a rotary brush, a brush mounting portion and an electric rotary toothbrush which is configured to be separable.

[0002]

2. Description of the Related Art Conventional electric toothbrushes are on the market, but most of them are a method of polishing by brushing the brush on the tooth surface and vibrating the brush in small steps, which is theoretically the same as a manual brush. In addition, since the teeth are held and integrated with the gums, it is impossible to avoid the gums and only brush the teeth. However, when brushing the back side of the back teeth, the neck or handle that has a brush hits the other teeth and interferes with brushing the part you want to brush. There is a problem that it can not be easily located, and when the brush is worn out, it is configured integrally with the brush, the neck not worn,
Or, both the handle and the handle have to be discarded, which is a major economic problem.

[0003]

As described in the above-mentioned prior art, there is a problem that the gums are stroked backwards and the gums are damaged.

Further, when the back side of the back teeth is brushed, the neck portion or the handle portion having the brush hits the other teeth and interferes with the other teeth, so that the brush cannot be easily positioned on the back side of the back teeth. Was there.

Further, there is a problem that when the brush is worn out, the non-worn neck portion or the handle portion, which is integrated with the brush, is discarded.

The present invention focuses on such problems of the prior art, and the purpose thereof is to brush the teeth without damaging the gums, and to easily position the brush on the portion to be brushed on the back side of the back teeth. In addition, the present invention provides an electric rotary toothbrush that can be made into a small size and further minimizes consumables.

[0007]

In order to achieve the above object, the electric rotary toothbrush according to the present invention has a connector 2 at one end inside the brush mounting portion A of the main body of the rotary toothbrush and a wear preventing ring 8 at the other end. Forming a semicircular groove O having a brush 7 in the groove O, and a rectangular convex portion 5 at one end and a mountain-shaped convex portion 6 at the other end, or a hemispherical convex portion 5. Convex portion 31
The cylindrical brush shaft 4 formed with is rotatably and pivotally attached.

The brush mounting portion A of the rotary toothbrush
The side surface of the neck portion N extending more integrally with the handle is formed in a curved shape L.

Further, the handle portion B in which the power of the electric rotary toothbrush body is housed and the neck portion N having the brush mounting portion A are detachable so as to be used for multiple purposes.

[0010]

In the brush shaft 4 having a brush, the projections 5 and 6 formed at both ends of the brush shaft 4 are integrated with the rotary shaft having the semicircular groove O at both ends, and the wear preventing ring 8 is provided. It is possible to brush the tooth continuously from the upper and lower gums to the tooth tips without back-stroking the gum by reverse rotation.

Further, since the neck portion is formed in the curved shape L, the use angle range of the brush mounting portion A is expanded, the brush can be easily positioned on the back side of the back teeth, and the handle of the electric rotary toothbrush main body. Since the portion B and the neck portion N are configured to be detachable, the neck portion N having a brush can be freely exchanged for various purposes according to the purpose of use, and by the half rotation of the convex portion 41 formed on the attachment / detachment portion, The switch E can be turned 180 °.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments shown in the drawings will be described in more detail below. The electric rotary toothbrush shown in FIG.
FIG. 2 is a side perspective view of the electric rotating toothbrush described in FIGS.
As shown in FIG. 4, a semicircular groove O is formed inside the brush mounting portion A of the electric rotary toothbrush body as shown in FIG. 4, and a rectangular recess 9 is formed at one end of the groove O. A coupling tool 2 integrated with the rotary shaft 1 is rotatably pivotally attached to a bearing 10 through a wear prevention ring 8 and has a through hole 3 facing the coupling tool 2 at the apex C of the other end. The prevention ring 8 is fixedly attached, and the coupling tool 2 and the wear prevention ring 8 are also provided.
In order to have a waterproof effect, it is preferable that the fitting portion be made of a precision ground metal or a plastic such as a hard synthetic resin.

Further, as shown in FIGS. 16 to 24, the brush shaft 4 having the protrusions 5, 6, 31 formed at both ends thereof is mounted on the semicircular groove O as shown in FIGS. The first embodiment of the brush shaft 4 is, as shown in FIGS.
The same rectangular projection 5 is formed to be fitted into the rectangular recess 9 formed in the above, and the wear prevention ring 8 having the through hole 3 fixed to the apex C is fixed to the other end. The convex portion 31 having a spherical tip or the convex portion 6 having a mountain shape to be fitted
Is formed.

The peripheral wall of the brush shaft 4 is shown in FIGS.
As shown in FIG. 1, the brushes 7 are radially planted at regular intervals and integrated.

A second embodiment of the brush shaft 4 is shown in FIG.
24, a gear-shaped V-shaped convex portion 20 having an anti-slip effect is formed on the peripheral wall of the brush shaft 4, and FIG.
As shown in Nos. 3 and 24, the brush shaft 4 is formed on the inner peripheral wall of a shaft cylinder 19 which is formed of a synthetic resin or the like suitable for an elastic toothbrush and which is formed integrally with the brush 7 in a radial shape.
The concave portion 18 that matches the V-shaped convex portion 20 formed on the peripheral wall of the
Is formed in the shape of an internal gear, and in order to implement this, the shaft cylinder 19 in which the concave portion 18 is formed in the inner peripheral wall is not easily displaced on the brush shaft 4 having the V-shaped convex portion. The brush 7 is detachable with a certain degree of pressure fitting, and is removed from the brush shaft 4 and discarded when the brush 7 formed integrally with the shaft cylinder 19 is consumed.

In order to mount the above-mentioned brush shaft 4 in the semicircular groove O of the mounting portion A of the electric rotary toothbrush body, as shown in FIGS. The brush shaft 4 is inserted into the rectangular insertion port 23 formed on the lower part of which a semicircular wear prevention ring 21 is fixed.
14 is inserted first, and as shown in FIG. 6, the rectangular protrusion 5 at the other end of the brush shaft 4 is fitted into the connector 2, and As shown in FIG. 12, the protrusion 6 is placed on the semicircular wear prevention ring 21,
The semicircular wear prevention ring 21 fixed to the lower portion of the guide piece 22 that slides the insertion opening 23 formed on the inner wall of the lid D shown in FIG. As shown in FIG. 15, the brush shaft 4 is rotatably held by sliding and joining, and the joined semicircular rings 21 are used as bearings.

Further, as shown in FIG. 15, the tip of the mountain-shaped convex portion 6 or the hemispherical convex portion 31 formed at one end of the brush shaft 4 is locked to the inner wall 24 of the lower portion of the lid D, Although there is a play gap between the brush shaft 4 and the brush shaft 4, the contact is always repeated to rotate, and the contact is formed by forming the mountain-shaped convex portion 6 or the hemispherical convex portion 31 so as to suppress friction as much as possible and to prevent the brush shaft 4 from rotating. The rotation of the bearing is smoothed and the vibration is reduced to minimize the consumption of the bearing.

The lid D is, as shown in FIGS.
A V-shaped groove 15 is formed at both ends of the apex C with the through hole 3 as the center, and V-shaped convex portions 14 formed on both ends of the lid D are fitted into the V-shaped groove 15 and slidable. And is locked by a stopper 25 formed in the lower portion of the wear prevention ring 8. Further, as shown in FIGS. 3, 11, 13, 14, and 15, a concave locking is provided on the top of the apex C. A convex locked portion 17 is formed on the upper part of the lid D that covers the locking portion 16 and that is locked by press-fitting in a closed state by the elasticity of the lid D. It is something.

In the third embodiment of the brush shaft 4 described above, as shown in FIGS. 18 and 19, a rectangular slide groove 27 is formed in the shaft center of the brush shaft 4, and the same slide groove 27 is formed. A rectangular slide rod 30 is fitted via a spring 26. One of the springs 26 is press-fitted to a cylindrical protrusion 28 protruding from one end of the slide rod 30, and the other is The slide bar 30 is fixed to the bottom surface of the slide groove 27 with an adhesive 29 or the like to expand and contract the slide bar 30 so that the slide bar 30 can be attached and detached. As shown in FIG. The slide rod 30 at one end of the brush shaft 4 is fitted into and contracted in the rectangular recess 9 formed in the above while elastically pressing the spring 26, and the protrusion 6 at the other end is repulsed by the spring 26 to prevent consumption. It is to be restrained and fitted in the ring 8 By using the method, it is only embedding implicitly the bearing shaped cup eye one ring orthotopically expendable preventing ring 8 shown is secured, the lid D
Alternatively, all the main parts related to the semicircular ring 21 and the like can be removed.

The electric rotary toothbrush shown in FIG.
FIG. 8 is a side perspective view of an electric rotating toothbrush in which the described neck portion N is formed in a curved shape L, and as shown in FIGS. 6 and 7, a pipe-shaped curve having a through hole 12 along the core of the curved shape L. The frame 38 is formed integrally with the support frame 32, and
As shown in FIG. 9, an elastic rod 35 having connecting members attached to both ends thereof is loosely fitted in the through hole 12 of the frame 38, and the elastic rod 35 and the connecting members 13 and 1 are provided.
The connecting method of 1 and 2 is as shown in FIGS.
3, 2 or 3 is fixed to a convex portion 36 having a concave portion 37 into which one end of the elastic rod 35 is press-fitted, or a concave portion 37 in which one end of the elastic rod 35 is press-fitted and connected to the other. The elastic rod 35 is press-fitted and fixed to the connector 11 having the gear-shaped convex portion 33, which is fitted in the internal gear-shaped concave portion 34 formed on one side of the gear 2. Is fitted into the connecting tool 2 having the internal gear-shaped recess 33, and the internal gear-shaped recess 3 is provided on the other side of the connecting tool 13.
4 is formed to fit the concave portion 34 of the connecting tool 13 into the gear-shaped convex portion 33 formed at the tip of the main shaft P. Further, the connecting tools 2 and 13 and the elastic rod 35 are elastic. It may be integrally formed of the synthetic resin or the like which it has. The method of connecting the rotary shaft 1 shown in FIG. 8 also uses the above method.

The electric rotating toothbrush shown in FIG. 25 is a side perspective view of the detachable electric rotating toothbrush according to claim 3, and as shown in FIGS. 26, 27 and 28, the handle portion of the electric rotating toothbrush body. B and the neck portion N are detachably configured so that the neck portion N can be exchanged for various purposes according to the purpose of use. The configuration is such that a rectangular projection is formed at the tip from the center of the bearing 46 at one end of the handle portion B. A main shaft P having a portion 39 formed therein is rotatably pivoted via a wear preventing ring 8 and is projected, and a thrust screw 43 is formed in a bolt shape on the outer peripheral edge of the bearing 46. .

Further, as described above, the same rectangular recess 40 that fits the rectangular projection 39 is formed at the center of the bearing 47 at one end of the neck N mounted on the structured handle B. The connector 13 is rotatably pivoted via the wear prevention ring 8, and the outer peripheral edge of the bearing 47 of the neck portion N is provided with a locked portion 48 formed on a lock nut Q described later. A female screw having a stopper R bulged in a ring shape so that the neck portion N is restrained to one side, and which is locked to the stopper R and has a locked portion 48 at one end. A lock nut Q having 44 is screw-fitted to a thrust screw 43 formed on the outer peripheral edge of one end of the handle portion B, and is fixedly mounted.

In order to fix the position direction when the neck portion N is attached to the handle portion B, as shown in FIG. 27, the switch E is centered around the main shaft of the side surface of the bearing 46 of the handle portion B.
The projections 41 are projected at both ends on the vertical line in the direction of, and the projections 41 are aligned with both ends on the vertical line in the direction of the brush 7 centered on the coupling 13 on the side surface of the bearing 47 of the neck portion N. 42 is formed and fitted to fix the position, and the switch E can be changed by a half rotation by changing the position.

The mounting portion of the neck portion N formed in the curved shape L shown in FIG. 28 also uses the above method, and is mounted on the handle portion B with a lock nut Q which can be freely removed from the neck portion N. Is.

In the side sectional view of FIG. 2, F is a bottom lid when the battery I is put in and out, and accommodates the storage battery H and fits the handle B by screw fitting to connect to the battery I. Also, G is an adapter socket, J is a motor, K is a control box and a speed reducer can be installed, M is a switch box, which is connected to rotate forward and backward, and switch E can be pressed with a fingertip. For example, it is preferable to use a switch that turns on and operates, and turns off and then stops.

[0026]

Since the present invention is constructed as described above, it has the following effects.

A semicircular groove O is formed inside the brush mounting portion A of the electric rotary toothbrush body according to claim 1 so that the brush shaft 4 can be mounted. It is possible to suppress the consumption of the toothbrush body to the minimum, and to fix the consumption prevention ring 8 at both ends of the groove O of the toothbrush body. Since the toothbrush main body has an effect and is integrated, there is no bending feeling and the brush can be easily positioned at the tooth portion to be brushed.

A shaft cylinder 19 integrally formed with the brush 7
In that the brush shaft 4 and the brush shaft 4 are configured to be detachable,
Further, the consumables can be limited to only the shaft cylinder 19, and the economical burden on the user can be reduced.

By rotating the brush 7 in the normal and reverse directions, the upper and lower gums can be continuously brushed to the tooth tips without going against the gums, and the gums can be brushed without damaging the gums.

Since the neck portion N according to the second aspect is formed in the curved shape L, the brush can be easily and easily positioned at a place such as the back side of the back teeth where it is difficult to polish.

In the detachable construction according to claim 3, the normal neck portion N and the neck portion N formed in the curved shape L can be used interchangeably for various purposes and have an economical effect. The toothbrush body has a simple structure and is low in cost, and the maintenance cost after purchase is as described above. Since the brush part is a consumable item, the maintenance cost is also low, and the toothbrush body is all integrated except for the brush 7. It also has an excellent appearance, which makes it interesting to clean teeth.

[Brief description of drawings]

FIG. 1 is a side perspective view of an electric rotary toothbrush body.

FIG. 2 is a side sectional view of the electric rotary toothbrush body.

FIG. 3 is a side sectional view of a brush mounting portion A.

FIG. 4 is a perspective view of a semicircular groove O.

FIG. 5 is a side perspective view in which a neck portion N of the electric rotary toothbrush body is formed in a curved shape L.

6 is a cross-sectional view taken along the line AA in FIG.

7 is a cross-sectional view taken along the line BB of FIG.

FIG. 8 is an arrangement view showing a method of connecting the rotating shaft and the connecting tool.

FIG. 9 is a side sectional view showing a method of connecting the elastic rod and the connecting tool.

FIG. 10 is a plan view showing a state in which a lid D at a vertex C is opened.

11 is a cross-sectional view taken along the line GG in the state where the lid D of FIG. 10 is closed.

FIG. 12 is a plan view showing a state in which a lid D at a vertex C is opened.

FIG. 13 is a plan view showing a state in which a lid D at a vertex C is removed, and the lid D is a rear view.

FIG. 14 is a cross-sectional view taken along the line HH in a state where the lid D is fitted to the apex C of FIG. 13 and opened.

15 is a cross-sectional view of a state in which the lid D of FIG. 14 is closed.

16 is a side perspective view of the brush shaft 4 having a hemispherical convex portion 31. FIG.

17 is a side perspective view of the brush shaft 4 having a mountain-shaped convex portion 6. FIG.

FIG. 18 is a side sectional view in which a slide rod 30 is restrained by a spring 26 on one side of a brush shaft 4.

FIG. 19 is an enlarged cross-sectional view taken along the line CC of FIG.

FIG. 20 is a side perspective view in which a brush 7 is embedded and integrated with a brush shaft 4.

21 is a side cross-sectional view taken along the line DD of FIG.

FIG. 22 is a side perspective view of the brush shaft 4 which is detachable.

23 is a side perspective view of a shaft cylinder 19 that is detachably attached to the brush shaft 4 of FIG. 22. FIG.

24 is a cross-sectional view taken along the line EE of FIG. 23 in which the brush shaft 4 of FIG. 22 is fitted in the shaft cylinder 19 of FIG. 23.

FIG. 25 is a side perspective view in which the handle B and the neck N of the electric rotary toothbrush main body are detachable.

FIG. 26 is a side cross-sectional view taken along the line FF of FIG. 25.

FIG. 27 is a perspective view of an attachment / detachment portion of a handle portion B and a neck portion N.

FIG. 28 is a side sectional view of a mounting portion of a neck portion N formed into a curved shape L.

[Explanation of symbols]

A Brush installation part B Handle C Apex D Lid E Switch F Bottom lid G Adapter socket H Storage battery I Battery J Motor K Control box L Curved M Switch box N Neck O groove P Spindle Q Lock nut R Stopper 1 Rotating shaft 2, 11, 13 Connecting tool 3 Through hole 4 Brush shaft 5, 6, 14, 20, 28, 31, 33, 36, 39,
41 convex part 7 brushes 8, 21 wear prevention ring 9, 18, 34, 37, 40, 42 concave part 10, 46, 47 bearing 12 through hole 15 V groove 16 locking part 17 locked part 19 shaft tube 22 guide piece 23 insertion port 24 inner wall 25 stop portion 26 spring 27 slide groove 29 adhesive material 30 slide rod 32 support frame 35 elastic rod 38 frame 43 thrust screw 44 female screw 45 joint portion 48 locked portion

Claims (3)

[Claims] 1. A semicircular groove (O) is formed inside a brush mounting portion (A) of an electric rotary toothbrush body, and the groove (O) has a brush (7). (5),
An electric rotary toothbrush equipped with a brush shaft (4) having (6) formed therein. 2. The electric rotary toothbrush according to claim 1, wherein the neck portion (N) of the main body of the electric rotary toothbrush is formed in a curved shape (L). 3. The handle (B) and the neck (N) of the electric rotating toothbrush body are detachable.
The electric rotating toothbrush according to 2.