JPH05146313A - Tooth brush for electrically driven tooth brush set - Google Patents

Abstract

PURPOSE:To effectively and efficiently brush a necessary brushing spot by one tooth brush without selecting electrically driven both brush sets or replacing the tooth brush. CONSTITUTION:A reciprocating member 24 having racks 26a-26d and brush gears 27a-27d rotating and reciprocating by engaging with the racks 26a-26d are provided in the case 21 of a tooth brush 20. The first bundle of fur is fitted in the reciprocating member 24 and the second bundle of fur is fitted in the brush gear respectively. The reciprocating member 24 is driven in the driving part of tooth brush on brushing teeth to reciprocate the first bundle of fur and the brush gears 27a-27d are driven through engaging with the racks 26a-26d to rotate and reciprocate the second bundle of fur.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toothbrush which is attached to a main body of an electric toothbrush and electrically driven by a motor incorporated in the main body to brush the teeth.

[0002]

2. Description of the Related Art Conventionally, some toothbrushes of this type include:
(A) Toothbrush by driving the toothbrush itself,
(B) There is one that drives a plurality of bristles attached to the toothbrush to brush the teeth.

Further, among the toothbrushes of (A), there were the following toothbrushes. As shown in FIG. 18, the toothbrush 1 is reciprocally rotatable about its length. Then, as shown in FIG. 17, the toothbrush 1 is rotated and reciprocated, the brush bristles 2 are applied to the surfaces of the teeth or between the teeth to brush the teeth, and stains such as plaque attached to them are removed. It was However, this toothbrush 1
Thus, it was effective for brushing the tooth surface and between teeth, but was not effective for brushing the boundary between teeth and gums.

As shown in FIG. 16, the toothbrush 1 is linearly reciprocally movable in the length direction. Then, the toothbrush 1 is linearly reciprocated in the tooth arrangement direction, and as shown in FIG. 15A, the brush bristles 2 are applied to the boundaries between the teeth and the gums to brush the teeth,
The dirt between the teeth and the gum can be removed, or the tooth surface can be brushed by applying it to the tooth surface as shown in (b), or the tooth mating surface can be removed as shown in (c). I brushed my teeth against it and removed the dirt there.
However, this toothbrush 1 is effective for brushing the boundary between teeth and gums, but the brush bristles 2 hurt the gums if the stroke of the linear reciprocating motion is large, so the stroke is reduced. Therefore, when the toothbrush 1 is reciprocally moved in small steps to brush the teeth (bath method), the efficiency of removing dirt on the tooth surface is low and not effective.

Next, among the toothbrushes of (B), there were the following toothbrushes. As shown in FIG. 14, two heads 1a of the toothbrush 1 are rotatably attached to the heads 1a of the toothbrush 2 in the opposite directions. Then, each of the hair bundles 3 was rotated, and as shown in FIGS. 13 (a) and 13 (b), the hair bundles 3 were applied to the surfaces of the teeth for tooth brushing to remove the stains. However, although this toothbrush 1 is effective in brushing the tooth surface as described above, it is not effective in brushing the boundary between the tooth and the gum.

As shown in FIG. 12, a plurality of bristle bundles 3 are arranged in two rows on the head 1a of the toothbrush 1 and are attached so as to be rotatable and reciprocally movable. Then, the hair bundles 3 are reciprocally rotated, respectively, and as shown in FIG. 11 (a), the hair bundles 3 are applied between the teeth to brush the teeth to remove dirt, or as shown in (b). In this way, the tooth was brushed by applying it to the meshing surface of the tooth to remove the dirt. However, although this toothbrush 1 is effective in brushing the teeth and the like, it is not effective in brushing the boundary between the teeth and the gums.

[0007]

As described above, the conventional toothbrushes have their advantages and disadvantages. Therefore, in the past, in order to effectively brush the necessary tooth brushing area,
It is necessary to use different electric toothbrush devices with toothbrushes that move appropriately according to the toothpaste location.
However, this makes toothbrushing bothersome and costly.

In the conventional electric toothbrush device, the toothbrush attached to the main body of the device can be linearly reciprocated and rotationally reciprocated, and when the linear reciprocal motion is performed, a dedicated toothbrush is rotationally reciprocated. Has a structure to attach a toothbrush dedicated to it. Then, at the time of brushing the toothbrush, the toothbrush was replaced according to the portion to be brushed. However, this makes toothbrushing both cumbersome and inefficient.

Therefore, an object of the present invention is to make it possible to effectively and efficiently brush a necessary toothbrushing portion with one toothbrush without using the electric toothbrusher properly or replacing the toothbrush.

[0010]

Therefore, the invention described in claim 1 is, for example, as shown in the following illustrated embodiments,
In the toothbrush 20, 40 of the electric toothbrush device including the plurality of hair bundles 30, 31, the plurality of hair bundles 30, 31 are
It is characterized in that it is composed of a first hair bundle 30 that makes a linear reciprocating motion and a second hair bundle 31 that makes a rotary motion.

According to a second aspect of the present invention, for example, as shown in the following illustrated embodiment, in the toothbrush 20, 40 of the electric toothbrush device according to the first aspect, the plurality of bristle bundles are arranged in three rows, It is characterized in that the middle is defined as the second hair bundle 31 and the first hair bundle 30 is provided on both sides.

According to a third aspect of the present invention, for example, as shown in the following illustrated embodiments, in the toothbrush 20 of the electric toothbrush device according to the first aspect, the racks 26a to 26d are provided and the first bristle bundle 30 is provided. Reciprocating member 24 for attaching
And brush gears 27a to 27d that engage with the racks 26a to 26d of the reciprocating member 24 to make a rotary reciprocating motion and to attach the second bunch of hairs 31.

According to a fourth aspect of the present invention, for example, as shown in the following illustrated embodiment, in the toothbrush 40 of the electric toothbrush device according to the first aspect, a transmission gear 42 that makes a rotary reciprocating motion, and the transmission gear 42 thereof. Brush gears 27a to 27d that engage with the second bunch of hairs 31 and racks 43a and 4 that engage with the brush gears 27c and 27d.
3b and a reciprocating member 43 to which the first hair bundle 30 is attached.

[0014]

The toothbrushes 20 and 40 according to claim 1
Then, when brushing teeth, the first hair bundle 30 is linearly reciprocated, and the second hair bundle 31 is rotated.

In the toothbrushes 20 and 40 of the second aspect, when brushing the teeth, the first bristle bundle 30 linearly reciprocates on both sides, and the second bristle bundle 31 rotates in the middle.

In the toothbrush 20 of the third aspect, the first bristle bundle 30 is linearly reciprocated through the reciprocating member 24,
The second bunch of hairs 31 is rotationally reciprocated from the mesh of the racks 26a to 26d and the brush gears 27a to 27d via the brush gears 27a to 27d.

In the toothbrush 40 according to the fourth aspect, when the toothbrush is brushed, the transmission gear 42 is reciprocally rotated and reciprocally moved, and the meshing between the transmission gear 42 and the brush gears 27a to 27d causes the second bristles to pass through the brush gears 27a to 27d. The bundle 31 is rotated and reciprocated, and the brush gears 27c and 27d and the rack 43 are moved.
The first bristle bundle 30 is linearly reciprocated through the reciprocating member 43 from the meshing with the a-43b.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. 4 and 3 show a toothbrush drive unit of an electric toothbrush device to which a toothbrush according to an embodiment of the present invention is attached. This toothbrush drive unit is not shown,
It is stored in the outer case of the main unit that can be held with one hand. In the figure, reference numeral 10 is a motor, 11 is a power source 11, 12 such as a rechargeable battery for driving the motor 10, and 12 is the motor 10.
This is a switch for turning on and off. The motor 10 has a motor gear 13 as a bevel gear attached to its drive shaft, and the motor gear 13 meshes with a face gear 14. The face gear 14 has an eccentric cam 15 attached to its center shaft 14a. The eccentric cam 15 has a lower end 16 of the crank 16.
It is arranged in the hole 16b provided in a. And crank 1
6 is urged upward to bring the inner surface of the hole 16b into contact with the outer circumference of the eccentric cam 15 so as to be reciprocally movable up and down in the figure.

In the electric toothbrush device described above, the toothbrush 20 of the present invention shown in FIGS. 1 and 2 is detachably attached to the top of the device body. The toothbrush 20 includes a case 21. The case 21 has a hollow interior and includes a long handle case 21a and a head case 21b. As shown in FIG. 2, the head case 21b is formed by forming two brush elongated holes 22 in the tooth brushing surface 21c and a plurality of brush round holes 23 in one column between the brush elongated holes 22.
Then, as shown in FIG. 1, a reciprocating member 24 is provided in the case 21. The reciprocating member 24 conforms to the outer shape of the case 21 and has a smaller shape, and includes a shaft portion 25 arranged in the handle case 21a and a ring portion 26 arranged in the head case 21b. The shaft 25 has its lower end (not shown) connected to the upper end of the crank 16 of the brush drive unit. The ring portion 26 is provided with a plurality of racks 26a to 26d facing inward. Also, the ring part 2
6 has a plurality of brush gears 27a to 27 in a vertical line.
d is provided. And, those brush gears 27a to 27d
Are engaged with the racks 26a to 26d, respectively.
Further, in the toothbrush 20, the plurality of first bristle bundles 30 are attached to the longitudinal portion of the ring portion 26, and the second bristle bundle 31 is attached to each of the brush gears 27a to 27d. Then, as shown in FIG. 2, the first bristle bundles 30 are projected to the outside through the brush elongated holes 22, and the second bristle bundles 31 are projected to the outside through the brush round holes 23 and are arranged in three vertical rows. Become.

When brushing teeth using the above-described electric toothbrush device, the device body is held by hand, the toothbrush 20 is directed into the oral cavity, and the switch 12 is turned on to drive the motor 10. .. Then, the rotation of the motor 10 is transmitted from the motor gear 13 to the face gear 14 to reduce the speed, and the eccentric cam 15 is rotated. Then crank 16
The rotary motion is converted into a linear reciprocating motion, and the reciprocating member 24 is linearly reciprocated vertically with a constant stroke. Then, the first bristle bundle 30 on the ring portion 26 linearly reciprocates in small steps, and the brush gears 27a to 27d rotate and reciprocate through the meshing with the racks 26a to 26d, and the brush gears 27a to 27d move. The second bunch of hairs 31 makes a rotary reciprocating motion. Then, when the hair bundles 30 and 31 are appropriately applied to the tooth brushing portion, the first hair bundle 30 that linearly reciprocates effectively removes dirt such as plaque between the teeth and gums and the meshing surface of the teeth. To remove. Further, the second bunch of hairs 31 that reciprocate in rotation effectively removes dirt adhering to the surfaces of the teeth and between the teeth.

In the illustrated embodiment described above, the reciprocating member 24 is linearly reciprocated by the toothbrush drive unit, and the brush gear 27 is engaged with the racks 26a to 26d through meshing.
Although the a to 27d are reciprocally rotated, as shown below, conversely, the toothbrush driving unit reciprocally rotates the brush gear and linearly reciprocates the reciprocating member through the meshing of the brush gear and the rack. It can also be configured.

In this other embodiment, for example, as shown in FIG. 5, the reduction gear 3 is attached to the motor gear 35 of the toothbrush drive unit.
6 is meshed with the eccentric cam 1 on the upper surface of the reduction gear 36.
Attach 5. The eccentric cam 15 is, as shown in FIG.
It is arranged in the hole 37 a of the crank 37. Crank 37
Connects the lower end of the connecting shaft 38 to the left end so that the connecting shaft 38 is rotatable about the connecting shaft 38 as shown in the figure.

In the other embodiment, as shown in FIG. 7, the toothbrush 40 has a gear shaft 41 arranged in the handle case 21a of the case 21. The lower end of the gear shaft 41 is connected to the connecting shaft 38, and the transmission gear 42, which is a bevel gear, is attached to the upper end thereof.
Further, in the head case 21b, as shown in FIG. 8, a plurality of brush gears 27a to 27d meshing with each other in a vertical row.
To provide. The transmission gear 42 is meshed with the brush gear 27a at the lowest stage. Furthermore, head case 2
In 1b, as shown in FIG. 7, brush gears 27a-2
A ring-shaped reciprocating member 43 is provided so as to be vertically movable around 7d. The reciprocating member 43 has racks 43a and 43b that are inwardly facing each other in a vertically long portion thereof. Then, these racks 43a and 43b are respectively connected to the brush gears 27a and 2a.
It meshes with 7b.

However, when brushing teeth using the electric toothbrush device of the other embodiment, the motor 10 is driven and the rotation of the motor 10 is transmitted from the motor gear 35 to the reduction gear 36 to reduce the speed. , Rotate the eccentric cam 15. Then, the crank 37 converts the rotary motion into a rotary reciprocating motion, and the connecting shaft 38 is rotary reciprocatingly moved. Then, the transmission gear 42 is rotated and reciprocated through the gear shaft 41,
The brush gears 27a, 27b, 27c, and 27d are sequentially rotated and reciprocated through the meshing with the transmission gear 42, and among them, the brush gears 27c and 27d and the racks 43a and 43d.
The reciprocating member 43 is linearly reciprocated through the engagement with b. Then, the second bunch of hairs 31 on each of the brush gears 27a to 27d makes a rotational reciprocating motion, and at the same time, the reciprocating member 43.
The upper first tuft 30 performs a linear reciprocating motion.

The toothbrushes 20 and 40 of the present invention are
For example, as shown in FIG. 9, the first bristle bundles 30 on both sides of the second bristle bundle 31 in the middle may be made higher. Thereby, when brushing these hair bundles 30 and 31 against the tooth surface, as shown in FIG. 10, the hair tips of the first hair bundle 30 on one side easily come into contact with the teeth and gums, and between them. It is possible to more effectively remove stains such as dental plaque.

[0026]

Therefore, according to the present invention, when brushing teeth, the first hair bundle is linearly reciprocated and the second hair bundle is rotationally moved. Therefore, the first hair bundle is linearly reciprocated. It can effectively remove stains such as plaque that has adhered between the teeth and gums, and it also adheres between the teeth and the mating surface of the teeth due to the rotation movement of the second hair bundle. The stains can be effectively removed, and it is possible to brush effectively and efficiently with one toothbrush without using the electric toothbrush device differently and replacing the toothbrush as in the conventional case.

[Brief description of drawings]

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

FIG. 2 is a front view of the toothbrush.

FIG. 3 is a structural explanatory view of a toothbrush drive unit of an electric toothbrush device to which the toothbrush is attached.

FIG. 4 is a structural explanatory view of the toothbrush drive unit of FIG. 3 viewed from the side.

FIG. 5 is a structural explanatory view of a toothbrush drive unit of an electric toothbrush device to which a toothbrush according to another embodiment of the present invention is attached.

FIG. 6 is a structural explanatory view of a motion conversion mechanism in the toothbrush drive unit.

FIG. 7 is a vertical sectional view of a toothbrush of another embodiment.

FIG. 8 is a meshing state diagram of the transmission gear and the brush gear.

FIG. 9 is a configuration diagram showing an example of the height of the bristles of the toothbrush of the present invention.

FIG. 10 is a state explanatory view showing a toothbrushing state with the toothbrush.

FIG. 11 shows a state in which toothbrushing is performed with a conventional toothbrush in which a plurality of hair bundles are rotatably and reciprocally attached, (a) shows a state of brushing between teeth, and (b) shows a meshing surface of the teeth. It is a state explanatory view showing a polishing state.

FIG. 12 is a perspective view of the toothbrush.

FIG. 13 shows a state in which toothbrushing is performed with a conventional toothbrush in which a plurality of bristles are continuously rotatably attached, and FIG. 13A is a perspective view showing a state of brushing the tooth surface, and FIG. 13B is a side view thereof.

FIG. 14 is a perspective view of the toothbrush.

FIG. 15 shows a state in which toothbrushing is performed with a conventional toothbrush that allows the toothbrush itself to reciprocate linearly, (a) shows a state in which the boundary between the tooth and the gum is brushed, and (b) shows a state in which the tooth surface is brushed. (C) is a state explanatory view showing a state of polishing the meshing surface of the teeth.

FIG. 16 is a perspective view of the toothbrush.

FIG. 17 is a state explanatory view showing a state in which the surface of the tooth is polished with a conventional toothbrush that allows the toothbrush itself to rotate and reciprocate.

FIG. 18 is a perspective view of the toothbrush.

[Explanation of symbols]

 20/40 toothbrush 24/43 reciprocating member 26a-26d, 43a / 43b rack 27a-27d brush gear 30 first bristle bundle 31 second bristle bundle 42 transmission gear

Claims (4)

[Claims] 1. A toothbrush for an electric toothbrush having a plurality of bristle bundles, wherein the plurality of bristle bundles are composed of a first bristle bundle that performs a linear reciprocating motion and a second bristle bundle that performs a rotary motion. Become a toothbrush of electric toothbrush. 2. The toothbrush for an electric toothbrush according to claim 1, wherein the plurality of bristles are arranged in three rows, and the first bristles are provided on both sides with the middle of the bristles as the second bunch. .. 3. A reciprocating member having a rack for mounting the first bristle bundle, and a brush gear for engaging with the rack of the reciprocating member to make a reciprocating rotary motion and for mounting the second bristle bundle. The toothbrush of the electric toothbrush device according to claim 1, wherein: 4. A transmission gear that reciprocates rotationally, a brush gear that meshes with the transmission gear and that attaches the second bristle bundle, and a rack that meshes with the brush gear.
The toothbrush of the electric toothbrush according to claim 1, further comprising a reciprocating member to which the bunch of hair is attached.