JPH0228746Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to an electric toothbrush in which a plurality of toothbrush bodies alternately reciprocate.

(Prior Art) Conventional electric toothbrushes generally operate as follows.

First, a single toothbrush body is swung by a motor-driven swinging lever, and the single toothbrush body is moved linearly back and forth by the rotational movement of an eccentric pin (Japanese Patent Laid-Open No. 51-137549). Public bulletin).

The second type is one in which two toothbrush bodies arranged in parallel are rotated (Japanese Utility Model Publication No. 55-440).

Thirdly, a driving attachment is detachably provided on the swing shaft provided at the tip of the electric toothbrush body, and the driving attachment is attached at different positions from the center to connect multiple toothbrush bodies. For example, the toothbrush body is oscillated in different ways by erecting a connecting axis and selecting the connecting axis (Japanese Utility Model Publication No. 55-136336).

(Problems to be Solved by the Invention) However, the functions of these conventional electric toothbrushes have a problem in that they cannot sufficiently clean various parts that require scrubbing.

That is, in the first electric toothbrush in which one toothbrush body moves back and forth in a straight line, since there is only one toothbrush body that moves back and forth in a straight line, this electric toothbrush is limited to the same movement as a manual toothbrush. Ta. Therefore, using this electric toothbrush did not improve the cleaning effect compared to manual toothbrushing, but it did reduce the fatigue of the hands and fingers compared to manual toothbrushing.

In addition, with second and third electric toothbrushes that rotate or oscillate multiple toothbrush bodies, although it is possible to brush the front surfaces of the front teeth with a continuous movement that is extremely difficult to do manually, it is difficult to brush the front surfaces of the front teeth, etc. In areas where brushing is required to scrape out food particles and plaque from the parts of the teeth and neck that contact the gums, each part cannot be thoroughly cleaned.
There was a disadvantage that the cleaning effect was inferior to manual tooth brushing.

Therefore, this device was devised to solve the above-mentioned problems.It achieves toothbrush movement that cannot be obtained with conventional rotary electric toothbrushes, and uses continuous movement that would be impossible to achieve manually. Our aim is to provide an electric toothbrush that is extremely effective in cleaning not only the grooves on the occlusal surface of molars, but also the areas in contact with the gums in the cervical region of the teeth, and which has an extremely high cleaning effect compared to conventional electric toothbrushes and manual toothbrushing. shall be.

(Means for Solving the Problem) In order to achieve the above-mentioned purpose, this invention includes a reciprocating mechanism driven by a motor installed in a predetermined gripping cylinder, and a plurality of reciprocating mechanisms driven by a motor installed in a predetermined gripping cylinder, and a plurality of Consisting of connecting rods that are arranged in parallel and in which adjacent rods move linearly reciprocating alternately in conjunction with a reciprocating mechanism, and a toothbrush body in which the toothbrush is divided into the number of connecting rods along the longitudinal direction. To solve the problem, a toothbrush body divided into a plurality of pieces is detachably connected to a connecting rod.

(Function) According to this invention, the motor installed in the grip cylinder drives the reciprocating mechanism, and causes the plurality of connecting rods interlocked with the reciprocating mechanism to linearly reciprocate so that adjacent rods alternate with each other.

The toothbrush body is divided into the number of connecting rods along the longitudinal direction, and each of the toothbrush bodies is connected to the connecting rod, and adjacent toothbrush bodies alternately move in a straight line reciprocating motion. be.

(Example) Hereinafter, an example of this invention will be described in detail with reference to the drawings.

The reference numeral 1 shown in the figure is a motor mounted inside a predetermined gripping cylinder 4, which drives a reciprocating mechanism 2 also mounted inside the gripping cylinder 4. The illustrated reciprocating mechanism 2 is provided with two plate cams 2C having different phases on the shaft of a final gear 2B that is interlocked with the motor 1 via an intermediate gear 2A. Two connecting rods 3 are arranged in parallel along the longitudinal direction of the tip end inside the gripping tube 4.
is formed as a driven shaft of the plate cam 2C, and adjacent connecting rods 3 are made to alternately move linearly reciprocally with respect to each other by the plate cam 2C whose phase is changed. At this time, the reciprocating mechanism 2 is not limited to the mechanism shown in the example shown, but may be a reciprocating mechanism using a cam or crank of other shapes. The design of the reciprocating mechanism 2 may be changed without any problem as long as it is capable of reciprocating motion.

Reference numeral 5 indicates a connecting rod 3 along the longitudinal direction of the toothbrush.
This is a toothbrush body divided into several parts. Therefore, this toothbrush body 5 is formed thinner than a normal toothbrush, and these multiple toothbrush bodies 5
Collectively, they form the size of a normal toothbrush. Each toothbrush body 5 includes a handle 5A and a brush portion 5B. In the illustrated example, two toothbrush bodies 5 are formed, but a larger number of toothbrush bodies 5 may be used by dividing the toothbrush into more parts. In this case, the number of connecting rods 3 is increased in advance by the number of toothbrush bodies 5.

The connection between the toothbrush body 5 and the connecting rod 3 is, for example, as shown in FIG. A sliding contact portion 3B that comes into sliding contact with is formed. Furthermore, a groove into which the handle 5A is inserted is formed in the support shaft 3A along the longitudinal direction of the support shaft 3A, and a fixing plate 3D that presses the side surface of the handle 5A is formed at the final end of this groove. A fixing protrusion and a fixing recess 5C are provided at the abutting portion of the fixing plate 3D and the handle 5A, and these are fitted to form a stopper. By doing so, it becomes extremely easy to attach and detach the toothbrush body 5, and the toothbrush body 5 can be reliably locked.

Note that although the reference numeral 6 in the figure is a battery, the power source for the motor 1 is not limited to the battery 6, and may be arbitrarily selected from an AC power source, a car battery, and the like. Further, the reference numeral 7 indicates a switch.

(Effects of the invention) By having the structure as described above, this invention realizes a toothbrush movement that cannot be obtained with conventional rotary electric toothbrushes, and has a superior cleaning effect compared to manual toothbrushing.

That is, a reciprocating mechanism 2 driven by a motor 1 mounted in a predetermined gripping tube 4, and a plurality of reciprocating mechanisms 2, which are arranged in parallel along the longitudinal direction of the tip end inside the gripping tube 4 and are adjacent to each other in conjunction with the reciprocating mechanism 2, are provided. A toothbrush body 5 in which the toothbrush is divided into the number of connecting rods 3 along the longitudinal direction.
By connecting the toothbrush body 5 divided into a plurality of pieces to the connecting rod 3 in a detachable manner,
Adjacent toothbrush bodies 5 connected to the connecting rod 3 alternately make linear reciprocating movements.

Therefore, it achieves toothbrush motion that cannot be achieved with rocking or rotating motions like conventional electric toothbrushes, and it can be used to clean areas such as the grooves on the occlusal surface of molars and the interproximal surfaces between teeth. Even areas where a rotary electric toothbrush cannot obtain a sufficient cleaning effect can be reliably cleaned by the linear reciprocating motion of the toothbrush body 5.

Furthermore, compared to manual toothbrushing that uses a single toothbrush in reciprocating motion, or electric toothbrushes that use this type of movement, this invented electric toothbrush can brush a predetermined area extremely finely, and can also brush different areas of the same area. This is to simultaneously sweep from both directions. Therefore, in areas where it is desired to scrape out food debris and plaque from the grooves on the occlusal surface of molars and the areas of the neck that contact the gums, food debris that cannot be removed with a simple reciprocating motion of a toothbrush can be removed. Now you can easily remove plaque and plaque.

In this way, this device achieves toothbrush movement that cannot be achieved with conventional rotary electric toothbrushes, and by continuous movement that would be impossible to achieve manually, it cleans not only the front teeth but also the grooves on the occlusal surface of the molars and the tooth neck. The cleaning effect is extremely good even in the areas that come into contact with the gums.
It has various practical effects, including extremely high cleaning effects compared to conventional electric toothbrushes or manual toothbrushing.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention: Fig. 1 is a perspective view, Fig. 2 is a vertical sectional view, Fig. 3 is an enlarged sectional view of the main part, and Fig. 4 is a state in which the toothbrush body and the connecting rod are connected. FIG. 1... Motor, 2... Reciprocating mechanism, 2A... Intermediate gear, 2B... Final gear, 2C... Plate cam, 3
...Connection rod, 3A...Support shaft, 3B...Sliding contact part,
3C... Fitting portion, 3D... Fixing plate, 4... Gripping tube, 5... Toothbrush body, 5A... Handle, 5B... Brush portion, 5C... Fixing recess, 6... Battery, 7...
Switch.

Claims (1)

[Scope of utility model registration request] A reciprocating mechanism is driven by a motor installed in a predetermined gripping cylinder, and multiple pieces are arranged in parallel along the longitudinal direction of the tip inside the gripping cylinder, and adjacent ones are aligned alternately in a straight line in conjunction with the reciprocating mechanism. It consists of a connecting rod that reciprocates and a toothbrush body in which the toothbrush is divided into the number of connecting rods along the longitudinal direction, and the toothbrush body divided into a plurality of pieces is detachably connected to the connecting rod. electric toothbrush.