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Air-driven rotary cutting tool

An air-driven, cutter technology, applied in medical science, dental prosthetics, dentistry, etc., can solve problems such as small heads

Active Publication Date: 2014-12-17
MORITA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rotation speed of the rotor obtained here is not enough to solve the above-mentioned problems, and it is necessary to reduce the rotation speed of the rotor more effectively while maintaining the torque.
In addition, in the case of the dental drill handpiece shown in this patent document, the rotor and the like are accommodated and supported through the air guide ring in the head, and the existence of the air guide ring is also one of the reasons why it is difficult to make the head smaller.

Method used

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Examples

Experimental program
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Embodiment Construction

[0037] Next, embodiments of the air-driven rotary cutter of the present invention will be described with reference to the drawings. figure 1 It is a side view showing the overall structure of a dental air turbine drill handpiece which is an embodiment of the air-driven rotary cutter of the present invention. exist figure 1 Among them, the dental drill handpiece 1 has a part for the operator to hold during treatment, that is, the handle portion 2. At the base end portion of the handle portion 2, the same as the conventional dental drill handpiece, there is a device for interacting with working media such as air and water. The connecting portion 2a to which the supply pipe 3 is connected is connected to the front end portion of the handle portion 2 with the head portion 4 connected via the neck portion 2b. A cutting tool 5 is detachably attached to the head portion 4 . Figure 2 ~ Figure 4 will be figure 1 The enlarged figure of the head 4 and its vicinity. As shown in these...

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PUM

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Abstract

An air-driven rotary cutting tool including a grip part, a head part provided at a distal end of the grip portion, and a rotor of double-wheel type rotatably installed in a hollow portion formed in the head part. The rotor has a first turbine blade portion provided with a plurality of first turbine vanes surrounding the rotary axis and a second turbine blade portion integrally formed with the first turbine blade and having a plurality of second turbine vanes surrounding the rotary axis. The first turbine vane has, on its side when seen in a direction into the rotary axis, a concave shape concaved in a direction of rotation of the rotor, and the second turbine vane has, on its side, a concave shape concaving in a direction opposite from the first turbine vane.

Description

technical field [0001] The present invention relates to an air-driven rotary cutter for medical use, dental use, or other cutting processing, which uses pressurized air to rotate cutting tools, and more particularly relates to a dental air turbine drill handpiece. Background technique [0002] Patent Documents 1 to 4 of the present applicant disclose an air-driven rotary cutter that can be used for medical use, dental use, or other cutting processes. The air-driven rotary cutters disclosed in these patent documents each include a two-stage (Japanese: 2-stage) rotor as a member that efficiently converts energy of pressurized air into rotational force. The two-stage rotor is composed of an annular hub, and a first turbine blade portion and a second turbine blade portion formed on the outer peripheral surface of the hub. Furthermore, the first turbine blade portion and the second turbine blade portion each include a plurality of first turbine blades and second turbine blades e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61C1/05
CPCA61C1/12A61C1/05
Inventor 高志哲也中山照三
Owner MORITA MFG CO LTD
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