JPS6019688Y2 - Dental power tools using hollow batteries - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a dental power tool using a hollow battery.

Conventionally, when using a battery as a power source for a dental power tool by attaching it to the power tool, the area occupied by the battery was a major hindrance, limiting the range of applications.

In particular, in the case of a battery structure in which several batteries are combined, the weight balance is poor and there are significant restrictions on use.

In view of the above points and considering the weight balance of the dental power tool, the present invention is designed to use a hollow battery fitted around the outer circumference of the power tool.

FIG. 1 shows a hollow battery. In the figure, 1 is an inner cylindrical anode body, 2 is an exterior cylindrical cathode body, and 3 is an insulating plate inserted between the anode and the cathode.

Fig. 2 shows an example of a battery in which hollow batteries are stacked and used, and Fig. 3 shows an example of a battery in which hollow batteries are used by concentrically covering each other.

FIG. 4 shows a motor section 5 directly connected to the dental handpiece section 4.
This is a perspective view of the dental power tool of the present invention in which a hollow assembled battery 6 of a covering type is fitted around the outer periphery of the dental power tool.

5 and 6 show examples of the use of batteries in conventional dental power tools. In FIG. 5, a set of batteries 7 is attached to the rear end of the motor section 5 of a dental handpiece in the axial direction; FIG. 6 shows an example in which a battery pack 9 having a hollow structure in which a plurality of batteries 8 are arranged in a ring shape is fitted onto the outer periphery of the motor section 5 of the handpiece.

In the conventional example shown in Fig. 5, the battery is attached to the rear end of the motor section in the axial direction, which increases the overall length of the handpiece and shifts the weight to the rear, making it inconvenient to operate the handpiece. The ring-shaped hollow structure shown in FIG. 6 has an excessively large outer periphery, and the weight balance shifts greatly toward the rear, making the handpiece difficult to operate and impractical.

As shown in Fig. 4, the handpiece according to the present invention has a battery formed in a hollow structure fitted around the outer periphery of the motor section of the handpiece, so the area occupied by the battery is limited in terms of space and weight. The weight of the hand piece is smaller than that of the conventional hand piece, so the weight balance is good, and the hand piece is extremely convenient to operate.

[Brief explanation of drawings]

FIG. 1 shows a hollow battery, FIG. 2 shows a case in which hollow batteries are used in a stacked manner, and FIG. 3 shows a case in which hollow batteries are used in a concentric manner. FIG. 4 shows an embodiment of the dental handpiece of the present invention using a fold-over type hollow battery, and FIGS. 5 and 6 show examples of the use of conventional handpiece batteries. DESCRIPTION OF SYMBOLS 1...Inner cylindrical anode body, 2...Outer cylindrical cathode body, 3...Insulating plate, 4...Hand piece part, 5... ...Motor part, 6...
Hollow battery, 7, 8... Conventional battery, 9... Hollow structured battery arranged in a ring.

Claims (1)

[Scope of utility model registration request] A hollow battery consisting of an inner cylindrical anode body, an outer cylindrical cathode body, and an insulating plate interposed between these two pole bodies is fitted in the outer circumferential direction of the motor part as a power source for a motor for driving a dental power tool. Dental power tools.