CN205379370U - Suck -back device is prevented to high speed turbine electric dental engine cell -phone - Google Patents
Suck -back device is prevented to high speed turbine electric dental engine cell -phone Download PDFInfo
- Publication number
- CN205379370U CN205379370U CN201620070309.2U CN201620070309U CN205379370U CN 205379370 U CN205379370 U CN 205379370U CN 201620070309 U CN201620070309 U CN 201620070309U CN 205379370 U CN205379370 U CN 205379370U
- Authority
- CN
- China
- Prior art keywords
- sealing cover
- suck
- back device
- drill point
- shaft sealing
- 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.)
- Active
Links
Landscapes
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The utility model provides a suck -back device is prevented to high speed turbine electric dental engine cell -phone, installs the one side that has the drill point at machine head body, the device comprises elastic axis sealing cover, inelastic bearing seal lid and becket, connect in proper order afterwards, the cell -phone stall in the twinkling of an eye, thereby aweather shaft toper brake lining prompt braking action will be pressed to the elastic axis sealing cover, prevent the resorption, and the becket at elastic axis sealing cover center can prevent that the arcuation after the elastic axis sealing cover is by the inflation warp the shortcoming that makes flow area reduce because its inflexible and hole precision are higher to the loss of rotational speed and output has been reduced, but not the elastic axis closing cap can prevent the excessive inflation of elastic axis sealing cover and lose elasticity, when the brake, the wind wheel rotational speed is very low, uses the better elastic material preparation elastic axis sealing cover of wearability, the life -span that can improve the elastic axis sealing cover, this cell -phone prevents that the suck -back device can effectively prevent the resorption simultaneously, prevents the entering of tooth granule and oral cavity liquid, prolongs the life of cell -phone middle (center) bearing greatly.
Description
Technical field
This utility model belongs to a kind of medical apparatus and instruments, particularly a kind of brill and grinds one's teeth in sleep the dental hand utensil of tooth.
Background technology
Existing high speed turbine dental drill hand piece includes handpiece body, nose cover, drill point, front machine handle, rear operating handle, air water joint composition.It is connected with dental unit, in order to obtain compression air and the cooling pressure water etc. of operating handset.Front machine handle is the position that doctor is hand-held.Equipped with can by the wind wheel of compressed air-driven in handpiece body, this wind wheel be contained in rotor shaft middle part by two bearings and by two O-shaped rubber ring dampings.
Current this dental drill can produce resorption phenomenon, it is possible to causes medical cross infection.Reason is following two aspects:
1) generation of polluter
Doctor is when use high speed turbine dental drill hand piece bores and grinds one's teeth in sleep tooth, must make it in the oral cavity of people, also to spray water to cool down drill point when boring mill, thus the head of this mobile phone and the front machine handle of part will necessarily touch the tooth of patient, oral mucosa and pulp cavity etc., sometimes also can touch blood, add that the cooling water spraying to drill bit in treatment and patient's saliva can form contaminated liquid in patient oral cavity.If there is some propagable disease such as hepatitis B, hepatitis C, acquired immune deficiency syndrome (AIDS) etc. in the patient cured, then necessarily have a large amount of harmful virus and antibacterial in this contaminated liquid.
2) resorption phenomenon can cause medical cross infection
Existing high-speed dental drill mobile phone bores can produce resorption phenomenon when grinding one's teeth in sleep tooth, in common knowledge in industry.
As shown in Figure 2 and Figure 3, it is positive air pressure state when compressing wind wheel chamber when air blows wind wheel rotation from air inlet entrance handpiece body, now will not produce resorption.But when doctor makes mobile phone stall, pressure stream of compressed air disappears from head air inlet, and wind wheel can continue spin for some time according to inertia.Due to non-compressed air supply in air inlet, the wind wheel of rotation can from handpiece body upper and lower two ends gap inspiration gas and discharged to air inlet and air vent.If at this moment touching oral cavity mentioned above contaminated liquid or oral cavity inner suspension to pollute the fine particle of tooth under water droplet or grinding at this place of head in aerial atomization, it is easy to take turns intracavity and discharged to porting by inhalation machine wind syndrome of head, thus polluting the part of head intracavity (such as wind wheel, bearing etc.) and intake and exhaust pipeline, even also can reach the pipeline of therapy apparatus and the related components of therapy apparatus.When doctor is again to next bit patient treatment, these stick in the oral cavity that the pollutant in the pollutant in turbine head cavity and the corresponding pipeline of therapy apparatus and parts can spray to next bit patient with compressed air stream, simultaneously also can resorption to the pipeline of therapy apparatus and inner components, thus forming medical cross infection.Minute abrasive owing to being suspended in oral cavity understands resorption to bearing again, increases abrasion and the damage of bearing.
Utility model content
The purpose of this utility model is to provide for a kind of anti-suck-back device of high speed turbine dental drill hand piece, and being arranged on handset machine head body has the side of drill point, including handpiece body, drill point, nose cover, front machine handle, rear operating handle, air water joint.The power wind wheel driving drill point to rotate and rotor shaft it is provided with in the space that described handpiece body and nose cover fasten, this rotor shaft is by bearings, O type rubber shock-absorbing circle it is provided with between described bearing and handpiece body, the upper end of this rotor shaft is provided with described nose cover, the cervical region of handpiece body is provided with water channel, inlet channel and exhaust passage, the opening of this inlet channel is positioned at power wind wheel place, it is characterised in that:
One end that described rotor shaft in described handpiece body is connected with described drill point is cone shape brake lining, and the lower end contracting of described rotor shaft is located in described handpiece body；The end face of the described drill point side of described handpiece body connection is equiped with elastic shaft sealing cover and non-resilient shaft seal cover, the center of this elastic shaft sealing cover offers drill point eyelet, this perforation size is slightly larger than described drill point outside dimension, the outward flange of described non-resilient shaft seal cover is connected by screw thread with the outward flange of described handpiece body, the center of described non-resilient shaft seal cover offers drill point eyelet, and this perforation size is slightly larger than this drill point outside dimension；
Described shaft seal cover side, described elastic shaft sealing cover center lip embeds a becket；Described becket overall diameter is slightly less than the external diameter of described elastic shaft sealing cover core, and inner diameter size is slightly larger than drill point outside dimension；Described interior diameter is shaped as chamfering shape the side near the brake conical surface.
By the design of the coniform brake lining of rotor shaft, elastic shaft sealing cover, non-resilient shaft seal cover, becket and becket chamfering, this utility model has reached following amazing effect:
1. owing to the brake lining of rotor shaft is coniform, and the inner surface of the core of elastic shaft sealing cover is the conical surface matched with coniform brake lining, considerably increases brake area, is also greatly increased brake susceptiveness.
2. install non-resilient shaft seal cover additional, it is possible to limit transition deformation during elastic shaft sealing cover inflation.Thus substantially prolongs service life and the reliability of this anti-suck-back device.
3. installing becket additional, will not be arc-shaped when making elastic shaft sealing cover inflation due to the embedding of this becket, center lip can keep flat state, thus can move in parallel vertically, will not produce the phenomenon of airway narrows, greatly reduce the loss of output.
4. the design of the chamfering of becket, it is advantageous in that, the drawback losing braking action that chamfering shape becket prevents the tip of becket after wearing and tearing due to rubber to expose dexterously and brings, effectively reduce in use procedure owing to high-speed turbine rotates the abrasion of the elastic shaft sealing cover caused, enhance the anti-wear performance of brake, further increase brake reliability.
The angle of above-mentioned chamfering is 30-45 °, it is preferred to 30 °.
This utility model additionally provides a kind of anti-suck-back device of high speed turbine dental drill hand piece, wherein, described elastic shaft sealing cover leans on the thickness of core more than the endless belt thickness between core and the edge of described elastic shaft sealing cover, the inner surface of the core of described elastic shaft sealing cover is the conical surface, matches with described rotor shaft brake lining.
This utility model additionally provides a kind of anti-suck-back device of high speed turbine dental drill hand piece, and wherein, described elastic shaft sealing cover is arranged in described shaft seal cover, and the inner wall shape of this shaft seal cover matches with the elastic shaft sealing cover external shape under inflation state；
This utility model additionally provides a kind of anti-suck-back device of high speed turbine dental drill hand piece, and wherein, the material of described elastic shaft sealing cover is the good rubber of wearability or rubber-plastics material.Owing to this utility model is applied to high speed turbine dental drill hand piece, need unlatching/closing hand phone repeatedly, needing elastic shaft sealing cover inflation repeatedly and shrink compression rotor shaft brake lining, therefore described elastic shaft sealing cover material must the preferred good rubber of wearability or rubber-plastics material.
This utility model additionally provides a kind of anti-suck-back device of high speed turbine dental drill hand piece, and wherein, the material of described elastic shaft sealing cover tolerates the high-temp steam sterilizing of 135 DEG C.Use condition and sterilising conditions according to dental drill determine, this elastic shaft sealing cover is not only wear-resisting, more to tolerate more than 135 DEG C of high temperature above steam sterilizations, could meet the requirement of repeatedly use, repeatedly sterilizing.Wherein can be preferably added to fluorubber or the nitrile rubber of carbon additive.
This utility model additionally provides a kind of anti-suck-back device of high speed turbine dental drill hand piece, and wherein, described non-resilient shaft seal cover is metal.
Facts have proved that this utility model has cost low, reliability is high, it is prone to adjust the features such as installation, the brake of elastic shaft sealing cover is to stop supply at head, occurs, thus rotating speed has been not as high during wind wheel inertial rotation, have employed again more wear-resisting material simultaneously, so lasting a long time, it is possible to meet instructions for use, it it is a technology with significantly high production practical value.
Operation principle of the present utility model:
During drill point work and power wind wheel compressed air when blowing and rotate, the air-flow produced by the axial component of wind wheel air-flow can flow out from the rotor shaft taper end face gap with the conical lip of elastic shaft sealing cover, inflation elastic shaft sealing cover makes rotor shaft depart from elastic shaft sealing cover simultaneously, now, rotor shaft and drill point can normally rotate, drilling tooth.Owing to elastic shaft sealing cover is limited from making elastic shaft sealing cover premature failure without too deforming by the inner chamber of non-resilient shaft seal cover.The existence of becket, can be moved down along rotor shaft and the axially in parallel of drill point by the elastic shaft sealing cover center of inflation, reduce the pressure loss.When doctor makes drill point stall, air pressure disappears, and elastic shaft sealing cover leans on its elastic reset, and the conical surface at elastic shaft sealing cover center is closely sealed with the rotor shaft conical surface and produces braking action and sealing function.The brake weight at the more big conical surface place of the negative pressure in wind wheel chamber is also more big, thus the generation of resorption can effectively be prevented.
Make the dental drill being finished, its internal contamination thing residual quantity is extremely low, reason is owing to this anti-suck-back device brake is sensitive, brake is completed when wind wheel chamber is still in barotropic state, pollutant have been blocked in beyond elastic shaft sealing cover, cannot be introduced in dental drill, in mobile phone, several contamination-frees residual, is therefore possible to prevent the generation of cross infection and is greatly prolonged the service life of bearing.
This anti-suck-back device also has is easy to industrial feature, near drill point side, as long as being provided with said apparatus in order, can produce and produce fabulous anti-resorption effect by rapid qualitative.
Accompanying drawing explanation
Fig. 1: prior art high speed turbine dental drill hand piece structural representation；
Fig. 2: mobile phone drill point rotary work state diagram in prior art；
Fig. 3: anti-suck-back device figure of the present utility model；
Fig. 4: anti-suck-back device partial enlarged drawing of the present utility model；
Fig. 5: the state diagram of prevention resorption of the present utility model.
Machine handle 5 rear operating handle 6 air water joint before 1 handpiece body 2 nose cover 3 drill point 4
7 O-shaped rubber ring 8 wind wheel 9 rotor shaft 10 air inlet 11 bearings
12 rotor shafts and the handpiece body gap 13 press water passage 14 coniform brake lining of rotor shaft
The inwall 17 elastic shaft sealing cover of the 15 non-resilient non-resilient shaft seal covers of shaft seal cover 16
The 18 becket 19 axle sealing cover center conical surfaces 20 form the gas channel of water smoke
Detailed description of the invention
Experimental example is used for further illustrating this utility model but is not limited to this utility model below.All technology realized based on this utility model foregoing belong to this utility model scope.
Embodiment 1
Referring to Fig. 1, Fig. 3, Fig. 4, Fig. 5.This utility model includes handpiece body 1, nose cover 2, drill point 3, front machine handle 4, rear operating handle 5, air water joint 6.Anti-suck-back device of the present utility model is arranged on the rotor shaft 9 of high speed turbine dental drill hand piece and installs end face 14 place of drill point 3.Passed to by the air water joint 6 of rear operating handle 5 from the compression air of dental unit and can blow wind wheel 8 in handpiece body 1 and rotate.Its compressed air stream axial component blowing wind wheel can flow to sealing place of the coniform brake lining 14 of rotor shaft and the axle sealing cover center conical surface 19 by rotor shaft and handpiece body gap 12.Simultaneously can inflation elastic shaft sealing cover 17, be affixed to the inwall 16 of non-resilient shaft seal cover by the elastic shaft sealing cover 17 of inflation.Due to rotor shaft 9 and elastic shaft sealing cover 17 have disengaged from thus without influence on the rotary motion of rotor shaft 9 and drill point 3.Now air-flow can flow out from the rotor shaft coniform brake lining 14 gap 13 with the axle sealing cover center conical surface 19.Owing to being that environmental contaminants may not flow in head more than atmospheric barotropic state in wind wheel chamber.When doctor is intended to stop drill point rotation, the compression air driving wind wheel is stopped conveying, now, wind wheel 8 can continue to rotate according to inertia, air-flow in wind wheel chamber is pressed to the porting of wind wheel room, forms negative pressure in wind wheel chamber, now former in elastic shaft sealing cover 17 meeting reset under the elastic reaction of rubber and the combined effect of wind wheel chamber negative pressure of inflation, the coniform end face 14 of rotor shaft 9 is made to be in closed state with the axle sealing cover center conical surface 19, thus producing the braking action to rotor shaft 9 and sealing function.Wind wheel 8 is by stall; opening is enclosed; therefore resorption is effectively stoped; make pollutant will not enter head wind wheel intracavity; thus preventing the generation of cross infection and protecting bearing not contaminated; extend bearing service life, more will not enter intake and exhaust pipeline and pollute therapy apparatus pipeline and related components thereof.
Rotor shaft 9 of the present utility model is designed to coniform end face in the one end being connected with drill point 3.
Elastic shaft sealing cover 17 is contained in head shaft seal cover, and non-resilient shaft seal cover 15 cavity shape meets deformed shape during elastic shaft sealing cover inflation.
Elastic shaft sealing cover 17 central hole sets metal ring 18, and embeds in elastic shaft sealing cover 17 and set chamfering at conical surface place.When elastic shaft sealing cover 17 is by inflation, its lip containing becket can prevent former elastic shaft sealing cover lip from making the situation that the circulation of compression air narrows occur when deforming along drill point axis translation, thus decreasing output loss.
The material of elastic shaft sealing cover 17 is more wear-resisting rubber or rubber and plastic, and can bear 135 DEG C of high pressure steam sterilizations, becket 18 and non-resilient shaft seal cover 15 is metal material simultaneously.But not the structural design of elastic shaft capping 15 should arrange with inside and match.
Claims (8)
1. the anti-suck-back device of high speed turbine dental drill hand piece, it is arranged on handset machine head body and has the side of drill point, including handpiece body, drill point, nose cover, front machine handle, rear operating handle, the power wind wheel driving drill point to rotate and rotor shaft it is provided with in the space that described handpiece body and nose cover fasten, this rotor shaft is by bearings, O type rubber shock-absorbing circle it is provided with between described bearing and handpiece body, the upper end of this rotor shaft is provided with described nose cover, the cervical region of handpiece body is provided with water channel, inlet channel and exhaust passage, the opening of this inlet channel is positioned at power wind wheel place, it is characterised in that:
One end that described rotor shaft in described handpiece body is connected with described drill point is cone shape brake lining, and the lower end contracting of described rotor shaft is located in described handpiece body；The end face of the described drill point side of described handpiece body connection is equiped with elastic shaft sealing cover and non-resilient shaft seal cover, the center of this elastic shaft sealing cover offers drill point eyelet, this perforation size is slightly larger than described drill point outside dimension, the outward flange of described non-resilient shaft seal cover is connected by screw thread with the outward flange of described handpiece body, the center of described non-resilient shaft seal cover offers drill point eyelet, and this perforation size is slightly larger than this drill point outside dimension；
In described non-resilient shaft seal cover side, described elastic shaft sealing cover center lip embeds a becket；Described becket overall diameter is slightly less than the external diameter of described elastic shaft sealing cover core, and inner diameter size is slightly larger than drill point outside dimension；The interior diameter of described becket is shaped as chamfering shape the side near the brake conical surface.
2. preventing mobile phone suck-back device according to claim 1, it is characterised in that the angle of described chamfering is 30-45 °.
3. preventing mobile phone suck-back device according to claim 2, it is characterised in that the angle of described chamfering is 30 °.
4. preventing mobile phone suck-back device according to claim 1, it is characterized in that, described elastic shaft sealing cover leans on the thickness of core more than the endless belt thickness between core and the edge of described elastic shaft sealing cover, the inner surface of the core of described elastic shaft sealing cover is the conical surface, matches with described brake lining.
5. preventing mobile phone suck-back device according to claim 1, it is characterised in that described elastic shaft sealing cover is arranged in described non-resilient shaft seal cover, the inner wall shape of this non-resilient shaft seal cover matches with the elastic shaft sealing cover external shape under inflation state.
6. preventing mobile phone suck-back device according to claim 1, it is characterised in that the material of described elastic shaft sealing cover is have wearability and tolerate the rubber of high pressure steam sterilization or the rubber-plastics material of 135 DEG C.
7. the preventing mobile phone suck-back device according to claim 1 or 4, it is characterised in that the material of described elastic shaft sealing cover is fluorubber or nitrile rubber.
8. preventing mobile phone suck-back device according to claim 1, it is characterised in that the material of described non-resilient shaft seal cover is metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620070309.2U CN205379370U (en) | 2016-01-25 | 2016-01-25 | Suck -back device is prevented to high speed turbine electric dental engine cell -phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620070309.2U CN205379370U (en) | 2016-01-25 | 2016-01-25 | Suck -back device is prevented to high speed turbine electric dental engine cell -phone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205379370U true CN205379370U (en) | 2016-07-13 |
Family
ID=56348838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620070309.2U Active CN205379370U (en) | 2016-01-25 | 2016-01-25 | Suck -back device is prevented to high speed turbine electric dental engine cell -phone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205379370U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017121046A1 (en) * | 2016-01-13 | 2017-07-20 | 北京东博气动工具有限公司 | Single-use device for preventing back siphonage in high-speed turbine dental handpiece |
| CN110279475A (en) * | 2019-06-25 | 2019-09-27 | 佛山市碧盈医疗器材有限公司 | A kind of head of compact dental handpiece |
-
2016
- 2016-01-25 CN CN201620070309.2U patent/CN205379370U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017121046A1 (en) * | 2016-01-13 | 2017-07-20 | 北京东博气动工具有限公司 | Single-use device for preventing back siphonage in high-speed turbine dental handpiece |
| CN110279475A (en) * | 2019-06-25 | 2019-09-27 | 佛山市碧盈医疗器材有限公司 | A kind of head of compact dental handpiece |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105476722B (en) | The anti-suck-back device of high speed turbine dental drill hand piece | |
| CN1887237B (en) | Back suction preventer for disposable high speed turbine dental drill hand piece | |
| CN105852990B (en) | Zero back suction device for disposable high-speed turbine dental drill handpiece | |
| CN105686887B (en) | The anti-suck-back device of disposable high-speed turbine tooth-drilling hand-held machine | |
| JP4879164B2 (en) | Handpiece and its suck-back prevention method | |
| CN205379370U (en) | Suck -back device is prevented to high speed turbine electric dental engine cell -phone | |
| CN110301989A (en) | A kind of high speed air-driven turbine dental handpiece of anti-resorption | |
| CN205268308U (en) | Suck -back device is prevented to disposable high speed turbine electric dental engine cell -phone | |
| CN2510028Y (en) | Disposable high-speed turbo dental-drill hand-device | |
| CN205795826U (en) | High speed turbine dental drill hand piece zero suck-back device | |
| CN102198017A (en) | Novel anti-back-suction device for high-speed turbine handpiece | |
| US10617487B2 (en) | Zero-suckback device for disposable high-speed turbine dental drill handpiece | |
| CN210784750U (en) | Anti-suck-back high-speed pneumatic turbine dental handpiece | |
| CN106344180B (en) | Zero suck-back device of disposable high-speed turbine tooth-drilling hand-held machine | |
| CN2645627Y (en) | Disposable high-speed turbine dental drill hand device | |
| CN206508045U (en) | The suck-back device of disposable high-speed turbine tooth-drilling hand-held machine zero | |
| CN110368106A (en) | A kind of zero resorption dental drill of high-speed turbine | |
| CN210384076U (en) | Push type low-speed turbine mobile phone | |
| CN201253267Y (en) | Disposable high-speed turbine dental-drill handset head-shell | |
| CN113491589A (en) | Airflow suspension movement assembly for high-speed turbine dental handpiece and dental handpiece | |
| CN208319338U (en) | A kind of anti-wind-puff dental handpiece | |
| CN107582188B (en) | Anti-emphysema dental handpiece | |
| CN209966593U (en) | Anti-suck-back device of dental handpiece | |
| CN208823002U (en) | A kind of dental handpiece heads of anti-resorption | |
| CN210541875U (en) | Zero resorption dental drill cell-phone of high-speed turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201, room 4, building 9, 101318 Anqing street, Tianzhu Airport Industrial Zone, Beijing,, Shunyi District Patentee after: Beijing Dongbo dental mobile phone Co. Ltd. Address before: 201, room 4, building 9, 101318 Anqing street, Tianzhu Airport Industrial Zone, Beijing,, Shunyi District Patentee before: BEIJING DONGBO PNEUMATIC TOOL CO., LTD. |