KR20050043127A - A simple and convenient structural electric toothbrush - Google Patents

Abstract

The disclosed invention relates to an electric toothbrush having a simple structure, which is configured to transfer power in a simple and efficient manner by coupling a coupling portion of a shaft portion for transmitting power with a bristle part configured to be bristled among bristles of a head part. will be.

To this end, the present invention is the toothbrush handle and the handle portion and the neck portion connected to the handle portion and the toothbrush head portion of the neck portion, the bristles configured to move the bristles of the head portion of the head portion is driven by the power received from the power unit And a power unit configured to enable movement of the hair transplanting unit in the handle part, and having a shaft configured to transmit power received from the power plant to the hair transplanting unit to perform the movement of the hair planting unit. By forming a gear at the end of the toothbrush and forming a driven gear corresponding to the shaft gear in the hair transplanter to provide an electric toothbrush configured to move the hair transplanter, unlike the structure of the conventional electric toothbrush to achieve a low noise structure Not only effective cleaning power but also excellent usability To get it.

Description

A simple and convenient structural electric toothbrush

The present invention relates to an electric toothbrush that drives the power unit to implement the movement of the hair transplanter. More specifically, the shaft of the shaft connected to the hair transplanter is configured in a gear shape to directly implement the movement of the hair transplanter by a gear coupling method. The present invention relates to an electric toothbrush having a simple structure which can improve cleaning power due to accurate power transmission and improve the feeling of use by low noise.

Generally, plaque removal is one of the most important elements for maintaining healthy teeth. Recently, many studies have been conducted for effective plaque removal of teeth, and as a result, various types of electric toothbrushes have been developed. .

Conventionally developed electric toothbrushes are used for personal hygiene to clean plaque of teeth and gums and to remove food residues. The toothbrush handle which the user grasps when brushing teeth, the neck part connected to the handle part, and the neck end Toothbrush head portion connected, a bristles for bristles bristles of the head portion, and a power unit that is built in the toothbrush handle portion to enable the rotational movement of the bristles.

Such a conventional electric toothbrush has a number of advantages in use, as is well known, and is generally used to move the hair of the head of the toothbrush using a power unit built in the toothbrush handle handle and the movement of the toothbrush itself by the user and the power unit By using the movement of the hair transplanting is configured to remove the plaque of the teeth more effectively than the general toothbrush.

In particular, the configuration and design of the head portion of the electric toothbrush has a direct relationship with the cleaning power has become a subject of technological innovation, the head portion of the electric toothbrush has been steadily developed in various forms for a long time.

In recent years, various types of bristles of the head portion is introduced, and some known public technologies include Korean Patent Registration No. 10-0127992, Patent Registration No. 10-0236404, and Patent Registration No. 10-0304175 , Patent Registration No. 10-0333137.

However, among the conventionally developed electric toothbrushes including these techniques, the toothbrush head portion, which is particularly configured to clean the teeth more effectively, has been found to be the most complicated and commercially unfeasible technology.

In addition, some commercialized electric toothbrushes are formed in an eccentric portion at the end of the shaft that transmits power to the head portion, so that the movement is transmitted due to the friction of the head portion by the eccentric portion, which may cause severe noise during use. Due to this, there is a possibility that the feeling of deterioration or the use of a certain period of time, there is a gap between the head and the assembly of the shaft, so that the movement is not properly performed and the cleaning power is deteriorated.

Accordingly, the present applicant has two toothbrushes which are independently driven by different mechanisms in the Korean Patent Application No. 10-2003-0073236 (name: "electric toothbrush") to improve the above problems. One electric toothbrush was presented. According to this, by utilizing the force applied to the electric toothbrush during brushing operation, each of the mothers can be driven independently in the oral cavity to double the exercise effect during brushing time. To be able to exert

The present invention is an improvement of the electric toothbrush already proposed by the present applicant, the bristle part of the head portion of the bristle is formed by the bristles and the coupling portion of the shaft portion for transmitting power in a gear shape, easy and efficient The method can transmit power, and unlike the structure of the conventional electric toothbrush is composed of a structure that can implement a low noise is to provide an electric toothbrush of a simple structure that can provide not only an effective cleaning power but also excellent feeling.

In order to achieve the above object, the present invention provides a toothbrush handle handle and a neck portion connected to the handle portion to be held by the user at the time of brushing the toothbrush head portion of the neck portion, the bristles of the head portion is planted and moved using the power transmitted from the power unit. In the electric toothbrush having a hair transplanter configured to be able to, and a power unit for enabling the movement of the hair transplanter is built into the handle portion, and a shaft for transmitting the power received from the power unit to the hair transplanter to make the movement of the hair transplanter, Provides an electric toothbrush having a simple structure configured to move the tufts by forming a gear at the end of the shaft to move the tufts and forming a driven gear corresponding to the shaft gear in the tufts.

In the present invention, the shaft is reciprocating forward and backward in the longitudinal direction of the toothbrush rod in accordance with the drive of the power unit, in particular the material of the shaft polyamide (polyamide), polyimide (polyimide), polyoxymethylene ( It is preferable to use one or two or more copolymers or blends of polyoxymethylene, polycarbonate, polyamideimide, polypropylene, and ABS resin (Acrylonitryl-butadiene-styrene terpolymer). It will be an embodiment, and the length of the end gear of the shaft for moving the tufts will be 0.1mm ~ 10.0mm, preferably 1.0mm ~ 4.0mm.

The objects, features and advantages of the present invention will be more readily understood by reference to the accompanying drawings and the following detailed description.

Hereinafter, the electric toothbrush described with reference to the accompanying drawings will be described as an example in which at least one planting part is provided to help understand the configuration and operation of the present invention. It is only used for the purpose of explaining the electric toothbrush by an example in detail, It does not limit the technical idea of this invention.

1 is a perspective view of an electric toothbrush having a simple structure according to the present invention, illustrating an electric toothbrush provided with one tuft.

As shown in FIG. 1, the electric toothbrush according to the present invention includes a toothbrush handle portion 1, which is held by a user when brushing teeth, a neck portion 2 connected to the handle portion, and a toothbrush head portion provided at the tip of the neck portion. (3) and the bristles (4) of the toothbrush head portion is configured to move by using the power transmitted from the power unit (not shown in the drawing) the bristles (5) are implanted in the toothbrush handle (1) ) And a shaft 7 (see FIG. 2) which transmits the power transmitted from the power unit to the hair transplanting unit so that the movement of the hair planting is performed. Reference numeral 8 is an operation switch for controlling the operation of the power unit.

Figure 2 is an exploded perspective view showing in detail the main portion of the head portion of the electric toothbrush according to the present invention, Figure 3a to 3c is an operating state diagram of the electric toothbrush according to the present invention, the toothbrush rod according to the drive of the power unit A shaft 7 reciprocating forward and backward in the longitudinal direction is provided, and at the end of the shaft 7 is formed a gear 7a having a predetermined length. In addition, a rear support part 6 having a driven gear 6a corresponding to the shaft gear 7a is provided at the rear of the hair drive part 4, and the front hair drive part with the rotation support part 6 ( 4) is integrally rotated so that the shaft gear 7a and the driven gear 6a mesh with each other to form a head part assembled as shown in FIG. 3A.

As a result, when the shaft 7 moves backward in the longitudinal direction as shown in FIG. 3B in the assembled state as shown in FIG. 3A, the hair part 4 moves in the counterclockwise direction as shown in FIG. On the contrary, when the shaft 7 moves forward in the longitudinal direction of the toothbrush as shown in FIG. 3C, the tufts 4 can rotate in the clockwise direction on the drawing.

At this time, the material of the shaft which is one of the components that play the most important role among the components of the electric toothbrush is excellent in the mechanical properties such as heat resistance, friction resistance, durability and dimensional stability, but can be processed through injection molding existing metal material Compared with engineering plastics with excellent formability and manufacturability. Such engineering plastics may be polyamide, polyimide, polyoxymethylene, polycarbonate, polyamideimide, and the like, and are generally widely used in toothbrush manufacturing. Polypropylene or ABS resin (acrylonitryl-butadiene-strene) is also available. The materials may be used alone or in two or more copolymers or blends. The length of the shape of the shaft end gear 7a that transmits power to the tufts is preferably 0.1 mm to 10.0 mm or less. If the length of the gear that causes the movement of the hair is less than 0.1 mm, the head of the head that the user can feel is not generated and it cannot act as an electric toothbrush. If it is larger than mm, the loss of power transmitted is increased and the size of the toothbrush head becomes large, thereby damaging the general characteristic of the electric toothbrush that can be easily cleaned to the posterior part using a small head.

The present invention has been described by way of example of selected powered toothbrushes and variations and modifications thereof may result from the understanding and reading of this specification, and all such modifications and variations so far are included within the scope of the appended claims.

Using the electric toothbrush made in accordance with the present invention and a conventional electric toothbrush, a comparative evaluation experiment on the effect of removing plaque and a consumer evaluation on usability were performed.

<Examples and Comparative Examples>

The electric toothbrush shown in the constitution of the present invention was made as an experimental toothbrush, and an electric toothbrush composed of rotating movements by friction of the head by the existing eccentric part was compared to Comparative Example 1, and the conventional toothbrush was not an electric toothbrush. Was carried out using Comparative Example 2.

Experimental Example 1 Comparative Evaluation Experiment for Plaque Removal Effect

When brushing teeth using the toothbrush prepared in Examples and Comparative Examples, the tooth plaque reduction effect was compared and evaluated in the following manner.

30 clinical subjects were selected and 10 persons each of the Example, Comparative Example 1 and Comparative Example 2 toothbrushes were used for a certain period (30 days), and then 14 days after 0 days, 30 days of plaque index (Plaque Index) was measured and the reduction rate (%) is shown in Table 1 below.

division % Decrease in plaque Example Comparative Example 1 Comparative Example 2 14 days later 4.9 ± 0.4 3.5 ± 0.4 1.8 ± 0.2 30 days later 10.2 ± 0.3 6.4 ± 0.4 4.1 ± 0.4

As shown in Table 1, the toothbrushes of Comparative Example 1 and Comparative Example 2 showed a decrease in the plaque index of the tooth surface after use for 30 days by 6.4% and 4.1%, compared to the conventional manual toothbrush compared to Comparative Example 2, which is a conventional electric toothbrush. Although this appeared to be somewhat superior, it was found that the electric toothbrush manufactured by the embodiment of the present invention has a plaque removal effect more excellent than that of the conventional electric toothbrush at a value of 10.2%.

Experimental Example 2 Evaluation of the Preference of Consumer Usability

The toothbrush prepared in Examples and Comparative Examples was evaluated for the usability of the toothbrush by the following evaluation method.

The results of measuring the average value using the five-point comparison method for the usability through the comparison panel test after using the above example and Comparative Example 1 electric toothbrush for a certain period (30 days) for a panel list of 30 people Is shown in Table 2 below.

division Example Comparative Example 1 Tooth plaque reduction effect 4.1 3.4 Molar plaque reduction 3.9 3.4 Cleaning feeling after brushing 4.0 3.2 Overall satisfaction 4.0 3.3

(However, the evaluation criteria of Table 2 are as follows. 5: Very good, 4: Good, 3: Normal, 2: Poor, 1: Very poor)

As shown in the results of Table 2, compared to Comparative Example 1 in the case of Example, it was found to be much superior in terms of plaque reduction effect, cleaning feeling after brushing, and overall satisfaction.

<Experiment 3>: noise evaluation when using a toothbrush

The toothbrush usability using the toothbrush prepared in Examples and Comparative Examples was evaluated by the following evaluation method.

Example 1 and Comparative Example 1 The noise generated when the electric toothbrush was operated in a space isolated from the outside by measuring the noise 10 times and the average value (dB) is shown in Table 3 below.

division Example Comparative Example 1 Noise generated during operation 45 ± 3㏈ 68 ± 5㏈

As shown in Table 3, the noise generated during operation was much smaller than that of Comparative Example 1.

As described above, the electric toothbrush according to the present invention showed not only the reduction of the plaque removal rate was higher than that of the conventional electric toothbrush and the non-electric toothbrush in the clinical comparative evaluation test that measured the tooth plaque removal effect, but also the tooth plaque reduction effect. In addition, it was found to be superior to the existing electric toothbrushes in the survey of consumer preferences such as molar plaque reduction effect and overall satisfaction, and the noise generated during operation was much smaller than the conventional electric toothbrushes.

Therefore, according to the electric toothbrush according to the present invention, compared to the existing design, it will be possible to obtain more excellent results in terms of effects such as cleaning power and usability or commercial feasibility.

1 is a perspective view of an electric toothbrush of a simple structure according to the present invention

Figure 2 is an exploded perspective view showing in detail the main portion of the head of the electric toothbrush according to the present invention

3a to 3c is an operating state of the electric toothbrush according to the present invention

<Explanation of symbols for the main parts of the drawings>

DESCRIPTION OF SYMBOLS 1 Handle part 2 Neck part 3 Head part

4: hair part 5: brush head 6: rotation support part

6a: driven gear 7: shaft 7a: shaft gear

Claims (5)

Toothbrush handle that the user grasps when brushing, the neck portion connected to the handle portion, the toothbrush head portion of the neck end, the bristles configured to move the bristles of the head portion using the power received from the power unit, and the movement of the bristles In the electric toothbrush having a shaft that is built in the handle portion to enable the power transmission from the power unit to the hair transplanting unit to make the movement of the planting unit, The electric toothbrush of claim 1, wherein the gear is formed at the end of the shaft and the circular gear corresponding to the shaft gear is formed at the planting part to move the planting part. The electric toothbrush of claim 1, wherein the shaft reciprocates forward and backward in the longitudinal direction of the toothbrush bar according to the driving of the power unit. The method of claim 2, wherein the shaft material is polyamide, polyimide, polyoxymethylene, polycarbonate, polyamideimide, polypropylene, ABS Easy-to-use electric toothbrush, characterized in that consisting of one or two or more copolymers or blends of acrylic (Acrylonitryl-butadiene-styrene terpolymer). 4. The electric toothbrush of claim 2 or 3, wherein the length of the end gear shape of the shaft that moves the hair transplanter is 0.1 mm to 10.0 mm. 5. The electric toothbrush of claim 4, wherein the length of the gear shape at the end of the shaft is 1.0 mm to 4.0 mm.