CN107997832B - Turbine dental drill head - Google Patents
Turbine dental drill head Download PDFInfo
- Publication number
- CN107997832B CN107997832B CN201710967313.8A CN201710967313A CN107997832B CN 107997832 B CN107997832 B CN 107997832B CN 201710967313 A CN201710967313 A CN 201710967313A CN 107997832 B CN107997832 B CN 107997832B
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- Prior art keywords
- wind wheel
- dynamic balance
- hole
- rubber
- spline
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- 229920001971 elastomer Polymers 0.000 claims abstract description 76
- 239000005060 rubber Substances 0.000 claims abstract description 76
- 238000003754 machining Methods 0.000 abstract 1
- 210000003128 head Anatomy 0.000 description 13
- 230000002265 prevention Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
A turbine dental drill head comprises a head shell, a wind wheel and a bearing, wherein the wind wheel comprises a wind wheel shaft and wind wheel blades, and the wind wheel shaft and the wind wheel blades are of an integrated structure. And a rubber part is arranged between the machine head shell and the wind wheel, the rubber part is simultaneously contacted with the machine head shell and the wind wheel in a natural state, and the rubber part is separated from one of the machine head shell and the wind wheel in a working state. The end part of the wind wheel shaft is internally provided with a dynamic balance hole, a dynamic balance body is arranged in the dynamic balance hole, and soft rubber or sponge is arranged between the dynamic balance body and the dynamic balance hole. According to the invention, the pressing area is reduced, and the cavity is arranged between the rubber part and the machine head shell, so that teeth are not easy to touch the pressing part, and the pressing part is occasionally touched and a brake disc cannot be touched, thereby avoiding the influence on the rotating speed; the ring groove is internally provided with a rubber ring, which can prevent suck back and automatically adjust dynamic balance. Spline holes are formed in the end portions of the wind wheel shafts, splines are in clearance fit in the spline holes, the splines extend out of the fixed dynamic balance disc at the end portions of the wind wheel shafts, the dynamic balance adjusting amount is large due to the structure, and high-precision machining cost is reduced.
Description
The present invention relates to a turbine dental drill head, its application number is 201210354925.7, application date is 2012.09.14.
Technical Field
The invention relates to a main grinding tool used in dentistry, in particular to a handpiece of a turbine dental drill.
Background
In general, a handpiece as an air-type cutting device for dental use is provided with a head at its tip, and the head houses necessary components of a cutting tool, including a rotor shaft of the cutting tool, two bearings supporting a rotation shaft, and an impeller disposed between the two bearings, and rotates the cutting tool by causing high-pressure air supplied from an air supply path disposed in a handle portion of the handpiece to impact the impeller. The existing air wheel shaft and blades of the disposable dental drill are all integral injection molding parts, for example, in the invention patent of patent No. 200520045733.3, the air wheel shaft and a lathe needle are matched through a three-petal spring, in the invention patent application of application No. 200910001394.1, a lathe needle hole of the air wheel shaft is in a spline shape, a lathe needle rod is clamped through elastic force of plastic, in addition, a wind blocking original sheet is arranged, the rotational inertia is increased, other disposable dental drills also select a lathe needle hole to be in interference fit with the lathe needle rod, and the like. The disposable dental drills are not put into practical use because the pneumatic wheel shaft and the lathe needle are in interference fit, and a plurality of disposable dental drills are produced in China, but the precision of a mould in China is generally 0.04-0.06mm, the precision of an injection-molded part is worse, and under the environment of 30 ten thousand revolutions per minute, the precision difference generates unbalance, vibration and noise are caused, the standard is not met, and the disposable dental drills are not actually used; above-mentioned two kinds of dental drills of pressing loading and unloading car needle, the structure is more complicated, and is unbalanced bigger during the rotation, and the noise is bigger. Moreover, the price of the existing metal dental drill used for multiple times directly depends on the processing precision, and the maximum price difference reaches hundreds of times. Moreover, because the handpiece extends into the oral cavity, when high-pressure air stops being supplied, the impeller continues to rotate at high speed along with inertia, negative pressure is generated in the handpiece, and external dirt is sucked into an air supply passage of the handpiece. The utility model provides an application number is 201110324919.2 prevents resorption tooth drill aircraft nose, because the aircraft nose lid is rubber, the tooth can touch the rubber aircraft nose lid and then make the rubber aircraft nose lid touch the core and influence the rotational speed during the use.
Disclosure of Invention
The invention aims to solve the problem that the rotating speed is influenced by the fact that a rubber handpiece cover of a suck-back prevention dental drill handpiece touches teeth, and provides the suck-back prevention dental drill handpiece which does not influence the rotating speed even if a pressing cover touches the teeth; secondly, solve the dynamic balance problem when the core of the existing dental drill head rotates at a high speed, thirdly, solve above-mentioned two problems at the same time.
In order to solve the problems, the invention adopts the following technical scheme:
a dental drill head comprises a head shell, a wind wheel and a bearing, wherein the wind wheel comprises a wind wheel shaft and wind wheel blades, and the wind wheel shaft and the wind wheel blades are of an integrated structure.
The rubber piece is arranged between the machine head shell and the wind wheel, the rubber piece is in contact with the machine head shell and the wind wheel at the same time in a natural state, and the rubber piece is separated from one of the machine head shell and the wind wheel in a working state.
The rubber part is as follows: the rubber layer is fixed on the inner side of the machine head cover of the machine head shell, and the rubber layer and the machine head cover form a cavity.
The machine head cover is provided with a through hole which is communicated with the rubber layer and the machine head cover to form a cavity.
The end part of the wind wheel shaft is provided with a brake disc, the rubber layer is in contact with the brake disc in a natural state, and the rubber layer is separated from the brake disc in a working state.
The brake disc is established to the wind wheel shaft tip, establishes annular groove I on the brake disc, sets up rubber ring I in the annular groove I, and I natural state of rubber ring down with the aircraft nose lid contact, rubber ring I receives centrifugal force to enter the inslot and the aircraft nose lid separation under the operating condition.
The wind wheel shaft is characterized in that an annular groove II is formed in the side of a wind wheel blade of the wind wheel shaft, a rubber ring II is arranged in the annular groove II, the rubber ring II is in contact with a bearing seat of the machine head shell in a natural state, and the rubber ring II enters the groove by centrifugal force and is separated from the bearing seat in a working state.
The wind wheel is characterized in that a dynamic balance hole is formed in the end part of the wind wheel shaft, a dynamic balance body is arranged in the dynamic balance hole, and soft rubber or sponge is arranged between the dynamic balance body and the dynamic balance hole.
The wind wheel shaft is characterized in that a spline hole is formed in the end portion of the wind wheel shaft, a spline is in clearance fit in the spline hole, the spline extends out of the end portion of the wind wheel shaft to fix the dynamic balance disc, and soft rubber or sponge is arranged between the spline and the spline hole.
The wind wheel shaft is provided with a clamping jaw hole, a clamping jaw in the clamping jaw hole is connected with a clamping jaw rod, and the clamping jaw rod is provided with a dynamic balance hole or a spline hole.
According to the invention adopting the technical scheme, the pressing area is reduced, and the cavity is arranged between the rubber layer and the head cover, so that teeth are not easy to touch the pressing part and occasionally touch the pressing part, and the cavity is arranged, so that the brake disc cannot be touched, and the rotating speed is prevented from being influenced; the rubber ring is arranged in the annular groove, so that the suck-back is prevented, the dynamic balance is automatically adjusted, two purposes are achieved, and the cost is reduced. The dynamic balance body is arranged in the wind wheel shaft, the original size of the dental drill is kept, the spline hole is formed, the spline is in clearance fit in the spline hole, the spline extends out of the end part of the wind wheel shaft to fix the dynamic balance disc, the dynamic balance adjusting amount is large by the structure, even if the unbalance amount of the wind wheel is large, the wind wheel can be automatically adjusted, and the high-precision processing cost is reduced.
Drawings
Fig. 1 is a structural diagram of a natural state in which a rubber bladder is fixed inside a pressing cover.
Fig. 2 is a schematic structural view of the rubber bag fixed inside the pressing cover in a working state.
FIG. 3 is a schematic view of a brake disc with an annular groove in an operating state.
FIG. 4 is a schematic view of a natural structure of a brake disc with annular grooves.
Fig. 5 is a schematic structural view of a dynamic balance body arranged in a wind wheel shaft.
Fig. 6 is a schematic view of a spline matching structure of a wind wheel shaft and a dynamic balance disc.
FIG. 7 is a schematic view of the fitting structure of the wind wheel shaft and the dynamic balance disk with the anti-disengaging spline.
Detailed Description
A dental drill head comprises a head shell 1, a wind wheel and a bearing 2, wherein the wind wheel comprises a wind wheel shaft 3 and wind wheel blades 4, and the wind wheel shaft 3 and the wind wheel blades 4 are of an integrated structure.
As shown in fig. 1 and 2, a rubber member is disposed between the nose casing 1 and the wind wheel, and naturally, the rubber member is in contact with both the nose casing 1 and the wind wheel, and in an operating state, the rubber member is separated from one of the nose casing 1 and the wind wheel. The working state is as follows: high-pressure gas is introduced into the machine head and pushes the wind wheel to rotate, the rubber piece is separated from one of the machine head shell and the wind wheel, and the wind wheel can rotate at a high speed; the work is stopped, the high-pressure gas stops being supplied, the rubber piece is simultaneously contacted with the machine head shell and the wind wheel, the wind wheel stops rotating in a braking mode, and dirt can be effectively prevented from being sucked back.
The rubber part is as follows: the rubber layer 6 is fixed on the inner side of the head cover 5 of the head shell 1, and the rubber layer 6 and the head cover 5 form a cavity. Under the natural state, the rubber layer is contacted with the end part of the wind wheel shaft, and under the working state, the rubber layer 6 is separated from the end part of the wind wheel shaft under the pressure of air pressure in the machine head shell; when the wind wheel stops working, the high-pressure gas stops being supplied, the rubber layer is in contact with the end part of the wind wheel shaft again, the wind wheel stops rotating in a braking mode, and dirt is effectively prevented from being sucked back.
The nose cover 5 is provided with a through hole 7, and the through hole 7 is communicated with the rubber layer 6 and the nose cover 5 to form a cavity. At the moment, the rubber layer 6 and the machine head cover 5 form a cavity communicated with the atmosphere, and the rubber layer and the end part of the wind wheel shaft are separated in a working state.
The end part of the wind wheel shaft 3 is provided with a brake disc 8, the rubber layer 6 is in contact with the brake disc 8 in a natural state, and the rubber layer 6 is separated from the brake disc 8 in a working state. The contact area of the brake disc 8 and the rubber layer 6 is large, so that the wind wheel can stop rotating during braking. For a machine head for inserting and pulling a machine needle or assembling and disassembling the machine needle by a key, the brake disc 8 can be directly arranged at the end part of the wind wheel shaft, and a through hole is formed in the center of the brake disc 8 and used for inserting an ejector pin or the key, so that the situation is not shown in the drawing; as shown in fig. 1 and 2, the nose for pressing and assembling the sewing needle, the wind wheel shaft 3 is provided with a jaw hole, a jaw 9 in the jaw hole is connected with a jaw rod 10, the jaw rod 10 extends out of the end of the wind wheel shaft and is provided with a brake disc 8, in this case, the corresponding nose cover 5 is a pressing nose cover, the pressing part of the pressing nose cover corresponds to the rubber layer 6, the rubber layer 6 can be a rubber bag 11, the part of the rubber bag corresponding to the nose cover is fixed with the nose cover without influencing the pressing, the rest parts are rubber layers, of course, the periphery of the rubber bag 11 can also be fixed with the nose cover, the rubber bag 11 is divided into two surfaces, one surface is used as the pressing part of the nose cover, and the other surface is.
As shown in figures 3 and 4, a brake disc 8 is arranged at the end part of a wind wheel shaft, an annular groove I14 is formed in the brake disc 8, a rubber ring I15 is arranged in the annular groove I14, the rubber ring I15 is in contact with a nose cover 5 in a natural state, and the rubber ring I15 enters the groove by centrifugal force and is separated from the nose cover 5 in a working state. Therefore, the rubber ring I15 has the braking function and also has the dynamic balance function of automatically adjusting the wind wheel. The rubber ring I15 can be provided with a rubber film 19, so that the friction area can be increased, and better braking can be realized.
An annular groove II 16 is formed in the side of a wind wheel blade 4 of the wind wheel shaft 3, a rubber ring II 17 is arranged in the annular groove II 16, the rubber ring II 17 is in contact with a bearing seat 18 of the machine head shell 1 in a natural state as shown in figure 4, and the rubber ring II 17 enters the groove under the centrifugal force and is separated from the bearing seat 18 in a working state as shown in figure 3. Wherein, the rubber ring II 17 has the braking function and the dynamic balance function of the automatic adjusting wind wheel. The end part of the wind wheel shaft and the side of the wind wheel blade in the figures 3 and 4 are both provided with an annular groove, and actually only one annular groove is needed, and the annular groove can also be arranged at two sides of the wind wheel blade.
As shown in fig. 5, a dynamic balance hole 12 is arranged in the end of the wind wheel shaft, a dynamic balance body 13 is arranged in the dynamic balance hole 12, and a soft rubber or sponge 20 is arranged between the dynamic balance body 13 and the dynamic balance hole 12. Soft rubbers such as silicone, polyurethane, etc. The dynamic balance body 13 moves radially in the dynamic balance hole 12 to automatically adjust the dynamic balance of the wind wheel. The dynamic balance body 13 may be in the shape of a column, such as a cylinder or a prism, or may be in the shape of a sphere or irregular particles.
As shown in fig. 6, a spline hole 21 is formed in the end of the wind wheel shaft, a spline 22 is in clearance fit in the spline hole 21, and the fit between the spline 22 and the spline hole 21 can also be a toothed ball hinge structure, wherein the toothed ball hinge structure is a toothed ball hinge structure as disclosed in patent No. 200720026788.9. The spline 22 extends out of the wind wheel shaft end part fixing dynamic balance disc 23, and soft rubber or sponge 20 is arranged between the spline 22 and the spline hole 21. The spline 22 moves radially in the spline hole 21 to drive the dynamic balance disc 23 to move radially, so as to automatically adjust the dynamic balance of the wind wheel. The splined bore 21 and splines 22 of fig. 7 are structures that prevent the splines 22 from backing out of the bore.
In fig. 5, 6 and 7, the air wheel shaft 3 is provided with a clamping jaw hole, a clamping jaw 9 in the clamping jaw hole is connected with a clamping jaw rod 10, the clamping jaw rod 10 is provided with a dynamic balance hole 12 or a spline hole 21, and the situation is suitable for pressing the dental drill hand piece.
The present invention is not limited to the above embodiments, and the equivalent and technical solutions presented in the present invention belong to the contents of the present invention.
Claims (3)
1. The utility model provides a turbine dental drill aircraft nose, comprises aircraft nose shell (1), wind wheel and bearing (2), and the wind wheel includes wind-wheel axle (3) and wind wheel blade (4), its characterized in that: the wind wheel shaft (3) and the wind wheel blades (4) are of an integral structure; a rubber part is arranged between the machine head shell (1) and the wind wheel, the rubber part is contacted with the machine head shell (1) and the wind wheel simultaneously in a natural state, and the rubber part is separated from one of the machine head shell (1) and the wind wheel in a working state; a dynamic balance hole (12) is formed in the end part of the wind wheel shaft, a dynamic balance body (13) is arranged in the dynamic balance hole (12), and soft rubber or sponge (20) is arranged between the dynamic balance body (13) and the dynamic balance hole (12); the dynamic balance body (13) moves radially in the dynamic balance hole (12) to automatically adjust the dynamic balance of the wind wheel.
2. The utility model provides a turbine dental drill aircraft nose, comprises aircraft nose shell (1), wind wheel and bearing (2), and the wind wheel includes wind-wheel axle (3) and wind wheel blade (4), its characterized in that: the wind wheel shaft (3) and the wind wheel blades (4) are of an integral structure; a rubber part is arranged between the machine head shell (1) and the wind wheel, the rubber part is contacted with the machine head shell (1) and the wind wheel simultaneously in a natural state, and the rubber part is separated from one of the machine head shell (1) and the wind wheel in a working state; a spline hole (21) is formed in the end part of the wind wheel shaft, a spline (22) is in clearance fit in the spline hole (21), the spline (22) extends out of the end part of the wind wheel shaft to fix a dynamic balance disc (23), and soft rubber or sponge (20) is arranged between the spline (22) and the spline hole (21); the spline (22) moves in the radial direction in the spline hole (21) to drive the dynamic balance disc (23) to move in the radial direction, so that the dynamic balance of the wind wheel is automatically adjusted.
3. The turbine dental drill head of claim 1 or 2, wherein: the wind wheel shaft (3) is provided with a clamping jaw hole, a clamping jaw (9) in the clamping jaw hole is connected with a clamping jaw rod (10), and the clamping jaw rod (10) is provided with a dynamic balance hole (12) or a spline hole (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710967313.8A CN107997832B (en) | 2012-09-14 | 2012-09-14 | Turbine dental drill head |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710967313.8A CN107997832B (en) | 2012-09-14 | 2012-09-14 | Turbine dental drill head |
| CN201210354925.7A CN103654975B (en) | 2012-09-14 | 2012-09-14 | A kind of bit of turbine dental engine |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210354925.7A Division CN103654975B (en) | 2010-05-26 | 2012-09-14 | A kind of bit of turbine dental engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107997832A CN107997832A (en) | 2018-05-08 |
| CN107997832B true CN107997832B (en) | 2021-03-02 |
Family
ID=50294556
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210354925.7A Active CN103654975B (en) | 2010-05-26 | 2012-09-14 | A kind of bit of turbine dental engine |
| CN201710967313.8A Expired - Fee Related CN107997832B (en) | 2012-09-14 | 2012-09-14 | Turbine dental drill head |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210354925.7A Active CN103654975B (en) | 2010-05-26 | 2012-09-14 | A kind of bit of turbine dental engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN103654975B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013053298A1 (en) * | 2011-10-12 | 2013-04-18 | 郑州泽正技术服务有限公司 | Dental drill head |
| CN105361960B (en) * | 2015-12-08 | 2017-11-28 | 桂林市啄木鸟医疗器械有限公司 | A kind of dental handpiece and preparation method thereof |
| CN106073909A (en) * | 2016-05-31 | 2016-11-09 | 北京东博气动工具有限公司 | High speed turbine dental drill hand piece zero suck-back device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5028181A (en) * | 1990-05-14 | 1991-07-02 | Grumman Aerospace Corporation | Quick change right angle and offset drill head |
| CN2530069Y (en) * | 2001-12-29 | 2003-01-08 | 广州斯克罗莱涡卷精密机械有限公司 | Positive-displacement swirl fluid compressor |
| JP4160319B2 (en) * | 2002-05-10 | 2008-10-01 | 株式会社モリタ製作所 | Dental cutting apparatus and suck back prevention method |
| CN100372507C (en) * | 2004-02-05 | 2008-03-05 | 同济大学 | Disposable dental hand-operated machine pneumatic turbine rotor and shaft |
| CN201253267Y (en) * | 2008-07-11 | 2009-06-10 | 李晓平 | Disposable high-speed turbine dental-drill handset head-shell |
| CN102448401B (en) * | 2010-05-26 | 2014-02-26 | 郑州泽正技术服务有限公司 | Dental turbine drill |
| CN202342207U (en) * | 2011-10-12 | 2012-07-25 | 刘晓霞 | Antisuction dental drill head |
-
2012
- 2012-09-14 CN CN201210354925.7A patent/CN103654975B/en active Active
- 2012-09-14 CN CN201710967313.8A patent/CN107997832B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103654975B (en) | 2018-08-10 |
| CN103654975A (en) | 2014-03-26 |
| CN107997832A (en) | 2018-05-08 |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Room 605, Block A, 60 Guoji Road, Jinshui District, Zhengzhou City, Henan Province Applicant after: ZHENGZHOU ZEZHENG TECHNICAL SERVICES Ltd. Address before: 450000 South Agricultural East Road, Zhengdong New District, Zhengzhou City, Henan Province, No. 226, 1st floor, Xibaolong City Plaza, Tianze Street Applicant before: ZHENGZHOU ZEZHENG TECHNICAL SERVICES Ltd. |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210302 |
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| CF01 | Termination of patent right due to non-payment of annual fee |