JP3009127U - electric toothbrush - Google Patents

Abstract

(57) [Abstract] (Modified) [Constitution] A cylindrical hollow hole is installed on the central axis of the connecting shaft 5 made of synthetic resin and integrally formed with the toothbrush body 1, and the metal pin 6 is placed in the hollow hole. An electric toothbrush that enables the strength of the connection shaft 5 for fixing the toothbrush 2 to be flexed due to stress. [Effect] The bending of the connecting shaft due to the stress applied through the toothbrush 2 at the time of brushing the teeth causes the metal pin 6 to move onto the central axis of the connecting shaft 5.
This can be improved by embedding the toothbrush, and the toothbrush 2 can be removed easily from the toothbrush main body 1 and correct toothbrushing is possible.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention uses a motor and a dry battery with a weight whose center of gravity is shifted at the tip of the shaft, and vibrates the toothbrush mounted on the connecting shaft of the toothbrush body case when it is started to clean the teeth when brushing teeth. The present invention relates to an electric toothbrush that can enhance the effect and massage effect of gums.

[0002]

[Prior art]

 Conventionally, this type of electric toothbrush has been configured such that a toothbrush that is removable from the toothbrush main body is fixed via a connecting shaft that is formed on the toothbrush main body side. It is formed integrally with the main body.

[0003]

[Problems to be solved by the device]

 However, the conventional method as described above has the following problems. Generally, synthetic resin causes flexure due to stress, and when an electric toothbrush is used by pressing it strongly against teeth or gums, the stress is applied from the direction orthogonal to the connection axis that supports the toothbrush. The resin-made connecting shaft also bends, which prevents proper brushing of the teeth and causes the toothbrush to fall off the toothbrush body during brushing.

[0004]

[Means for Solving the Problems]

 This invention was made in order to solve the above-mentioned conventional problems, and in order to prevent the flexible connecting shaft made of synthetic resin from bending due to external force, the tooth brush main body is connected. The central axial portion of the shaft is formed into an elongated tubular hollow shape, insert a metal pin of approximately the same diameter into the tubular hollow part, and fix the metal pin with a metal pin insertion port with an adhesive. The strength of the connecting shaft can be obtained as a closed or embedded state.

[0005]

With the electric toothbrush of the present invention, the metal pin is embedded in the axial direction of the inner portion of the connecting shaft, which is the connecting portion between the toothbrush main body and the toothbrush, so that even if the connecting shaft is thin, it can withstand the stress during tooth brushing. It can have the strength of, and can fully bring out the toothpaste effect.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. This embodiment relates to a dry battery driven vibration type electric toothbrush. As shown in FIG. 1, this electric toothbrush has a handle portion of the toothbrush body 1 and a connecting shaft 5 formed integrally with the toothbrush body 1. The toothbrush 2 is fixed to the toothbrush via the toothbrush 2, and a switch 3 for activating vibration is installed on the body of the toothbrush main body 1. FIG. 2 shows a partial cross section of the metal pin insertion portion of the present invention. FIG. 3 is a partial cross-sectional view showing the configuration of the present invention, in which the toothbrush 2 is fixed to the connecting shaft 5 formed integrally with the toothbrush body 1, and the switch 3 is activated to activate the motor 9. The shaft rotates, and vibration is obtained by the weight 8 whose center of gravity is displaced from the shaft tip of the motor 9, so that a tooth brushing effect can be obtained.

When the electric toothbrush is used, the toothbrush body 1 is held in the hand and the bristling portion of the toothbrush 2 is included in the mouth, and the bristling portion is pressed against the teeth or gums. 1, the root of the connecting shaft 5 formed integrally with the fulcrum serves as a fulcrum, and the connecting shaft 5 as a whole bends, so that the teeth cannot be properly brushed, and a gap is created between the toothbrush body 1 and the toothbrush 2. The toothbrush 2 is lifted from the toothbrush body 1, and the toothbrush 2 comes off from the toothbrush body 1 when it is used further.

In order to increase the strength of the connecting shaft 5, when forming the toothbrush main body 1, a hollow hole 4 into which a metal pin 6 can be inserted is formed in a central shaft upper portion of the connecting shaft 5 which is integrally formed. , Insert the metal pin 6 having almost the same diameter, and apply the adhesive 7 to prevent the metal pin 6 from coming off and to fix the surface. As a result, the metal pin 6 is embedded in the central axis of the connecting shaft 5, and the strength against the bending of the connecting shaft 5 caused by the toothbrush 2 is greatly improved.

[0009]

[Effect of device]

 As described above, the electric toothbrush of the present invention can improve the bending of the connecting shaft due to the stress applied via the toothbrush when brushing the teeth by embedding the metal pin on the central axis of the connecting shaft. It is possible to brush the teeth correctly without easily coming off.

[Brief description of drawings]

FIG. 1 is an external view of an electric toothbrush showing an embodiment of the present invention.

FIG. 2 is a partial sectional view of an electric toothbrush showing an embodiment of the present invention.

FIG. 3 is a structural partial sectional view of an electric toothbrush showing an embodiment of the present invention.

[Explanation of symbols]

1 Toothbrush body 4 Hollow hole 7
Adhesive 2 Toothbrush 5 Connection shaft 8
Weight 3 Switch 6 Metal pin 9
motor

Claims (1)

[Scope of utility model registration request] 1. An electric toothbrush body case, in which a motor is housed, a weight having a shifted center of gravity is attached to a protruding end of a rotating shaft of the motor, and the motor is rotated to generate vibration. In a vibrating electric toothbrush that transmits to a toothbrush that can be attached to and detached from a connection shaft and brushes teeth, a cylindrical hollow hole is formed in the axial direction of the connection shaft integrally formed with the toothbrush body case made of synthetic resin. An electric toothbrush with a metal pin inserted inside.