CN2225229Y - Hand machine of dental drill - Google Patents
Hand machine of dental drill Download PDFInfo
- Publication number
- CN2225229Y CN2225229Y CN 95214399 CN95214399U CN2225229Y CN 2225229 Y CN2225229 Y CN 2225229Y CN 95214399 CN95214399 CN 95214399 CN 95214399 U CN95214399 U CN 95214399U CN 2225229 Y CN2225229 Y CN 2225229Y
- Authority
- CN
- China
- Prior art keywords
- dental drill
- bearing
- utility
- model
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The utility model relates to a hand piece of dental drill, which adopts an air bearing to replace the existing ball bearings. A pneumatic impeller is used as a power source, and the grinding pin of the dental drill is sheathed on a shaft. The utility model has no abrasion during use, and has the advantages of long service life, low noise, small vibration, low power consumption of friction and high rated speed.
Description
This utility model relates to a kind of dental drill.
Dental drill is the dental medical apparatus and instruments, is used for grinding one's teeth in sleep.The dental drill of domestic production at present all is to adopt ball bearing, and it is easy to wear when high speed operation, the life-span is short, noise is big, power attenuation is big, rated speed is low.
The purpose of this utility model just is to overcome the shortcoming that present dental drill adopts ball bearing, and a kind of dental drill little, that the life-span is long, noise is low, rated speed is high that weares and teares is provided.
This utility model is to realize like this.
Adopt air bearing to replace present ball bearing, adopt wind rotor (air turbine) as power source, dental drill mill bar is enclosed within the rotating shaft, and at the handle place air inlet pipe, water inlet pipe is arranged.From the compressed air of air compressor through secondary filter impurity with after carrying out oil, separated form water, pipeline by this utility model dental drill handle, enter the throttling pore of bearing, flow into hole within the bearing then, between bearing and rotating shaft, form a stressor layer air film, this air film supporting shaft rotation, simultaneously, air blows impeller, and impeller and rotating shaft are combined closely, the drive rotating shaft is rotated, and dental drill mill bar and then rotates before the rotating shaft.
This utility model when work, not wearing and tearing, long service life, noise is little, vibration is little, friction power loss is little, specified coefficient height.
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1: be sketch map of the present utility model.
Among the figure: (1) is housing, (2) bearing holder (housing, cover), (3) bearing block, (4) impeller, (5) bonnet, (6) rotating shaft, (7) sealing ring, (8) air inlet pipe, (9) throttling pore, (10) air drain, (11) water inlet pipe, (12) outlet, (13) dental drill mill bar.
Among the figure: air drain (10) is an annular gas tank, on bearing block (3), is distributed with a plurality of throttling pore (9) on the bearing holder (housing, cover) (2), play the gas throttling effect, throttle style also can be the throttling of cellular-type slit, the throttling of seriality slit, the porous type throttling, forms such as surface throttle.
Bearing can be symmetrically distributed in the both sides, front and back of wind rotor (4), also can be in the front of impeller.
Sealing ring (7) is enclosed on the bearing block (3), prevents air unusual fluctuation outside bearing block (3).
Claims (2)
1, a kind of dental drill, its dental drill headgear is characterized in that being outside the rotating shaft air bearing in rotating shaft, power source is for changeing the wind rotor of combining closely with axle.
2, dental drill according to claim 1, the annular gas tank that it is characterized in that air bearing are distributed with throttling pore on the bearing holder (housing, cover) on bearing block, air inlet pipe, water inlet pipe are in handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95214399 CN2225229Y (en) | 1995-06-29 | 1995-06-29 | Hand machine of dental drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95214399 CN2225229Y (en) | 1995-06-29 | 1995-06-29 | Hand machine of dental drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2225229Y true CN2225229Y (en) | 1996-04-24 |
Family
ID=33864041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95214399 Expired - Fee Related CN2225229Y (en) | 1995-06-29 | 1995-06-29 | Hand machine of dental drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2225229Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008144984A1 (en) * | 2007-05-28 | 2008-12-04 | Beijing North Pole Dentai Handpieces Co.Ltd | A single-use hand-held dental drill with high-speed turbine |
| CN108742888A (en) * | 2018-06-19 | 2018-11-06 | 青岛市口腔医院 | A kind of department of stomatology surgical instrument |
-
1995
- 1995-06-29 CN CN 95214399 patent/CN2225229Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008144984A1 (en) * | 2007-05-28 | 2008-12-04 | Beijing North Pole Dentai Handpieces Co.Ltd | A single-use hand-held dental drill with high-speed turbine |
| CN108742888A (en) * | 2018-06-19 | 2018-11-06 | 青岛市口腔医院 | A kind of department of stomatology surgical instrument |
| CN108742888B (en) * | 2018-06-19 | 2022-05-17 | 青岛市口腔医院 | Surgical instrument for department of stomatology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |