JPH0419224U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view showing the internal mechanism of the head of a rotary toothbrush unit in an electric toothbrush that is an embodiment of this invention, Fig. 2 is a cross-sectional view of the rotary toothbrush unit viewed from the right side, and Fig. 3 Figure 4 is a sectional view showing the internal mechanism of the entire electric toothbrush device with a rolling and bathing toothbrush connected to the main body of the device, Figure 4 is a sectional view of it viewed from the left side, and Figure 5 is the electric toothbrush unit shown in Figure 3. Fig. 6 is an exploded perspective view of the motion conversion mechanism of this electric toothbrush, and Fig. 7 (a) to (d) show the operation of gradually dampening the parallel movement of the switching piece when the face gear is rotated clockwise. Explanatory diagrams, Figures 8A to 8D are operation explanatory diagrams showing the parallel movement of the switching piece step by step when the face gear is rotated counterclockwise. Figure 9 is a perspective view of the inner case with the power spring attached. Figure 10 is an exploded perspective view of the insulator and motor terminal, Figure 11 is a perspective view of the slide plate and switching cam assembled to the main body case, and Figure 12 is this electric toothbrush with the slide plate and switching cam installed. 13 is an exploded perspective view of the switch lever with the switch cam and click spring partially omitted; FIG. 14 is a sectional view showing this electric toothbrush with a rotary toothbrush unit connected to the device body; Figure 15 is a sectional view of it from the left side, Figure 16
The figure is a rear view showing the connection structure of the rotary toothbrush unit to the main body, Figure 17 A and B are explanatory diagrams of the state when the positioning angle of the rotary toothbrush unit head is changed, and Figure 18 is the bearing pipe. FIG. 19 is a perspective view of the joint member, the shaft, and the flexible shaft attached together. FIG. 20 is a sectional view showing the internal mechanism of the head of a conventional electric toothbrush. 17... Reversible motor (motor), 35... Drive shaft, 93... Operating lever, 97... Sector gear, 9
9... Small gear, 100... Support shaft, 102... Rotary brush.

Claims (1)

[Scope of Claim for Utility Model Registration] A drive shaft that reciprocates linearly by a motor; an operating lever that is attached directly or indirectly to the drive shaft and reciprocates linearly together with the drive shaft; and a lever that engages with the operating lever to operate the actuator. A sector gear that rotates and reciprocates by a lever; a small gear that meshes with the sector gear and rotates and reciprocates based on the rotation and reciprocation of the sector gear, and that has fewer teeth than the sector gear; An electric brush device that includes a rotary brush that is attached to a support shaft.