CN203074888U - Airflow pressure stabilizing device for dental handpiece - Google Patents
Airflow pressure stabilizing device for dental handpiece Download PDFInfo
- Publication number
- CN203074888U CN203074888U CN 201320060022 CN201320060022U CN203074888U CN 203074888 U CN203074888 U CN 203074888U CN 201320060022 CN201320060022 CN 201320060022 CN 201320060022 U CN201320060022 U CN 201320060022U CN 203074888 U CN203074888 U CN 203074888U
- Authority
- CN
- China
- Prior art keywords
- valve body
- air inlet
- dental handpiece
- inlet valve
- 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 - Lifetime
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Abstract
The utility model discloses an airflow pressure stabilizing device for a dental handpiece, which comprises an air inlet valve body, wherein a free end of the air inlet valve body is connected with an air inlet pipe of the dental handpiece; a pair of axisymmetric air outlet holes is formed in the middle part of the air inlet valve body; a valve body sleeve is sleeved on the air inlet valve body, and the bottom is in interference fit with the air inlet valve body; the top of the valve body sleeve is connected with an air outlet pipe of the dental handpiece; a sliding sleeve and a spring sleeved above the air outlet holes of the air inlet valve body are arranged in an inner cavity of the valve body sleeve; the spring is located between the sliding sleeve and a bulge of the inner cavity of the valve body sleeve; an overflow hole is formed in the valve body sleeve; and the overflow hole can be opened or closed when the sliding sleeve moves up and down on the air inlet valve body. The airflow pressure stabilizing device for a dental handpiece, disclosed by the utility model, can provide stable airflow to a turbine of the dental handpiece, so that the rotation speed of the turbine is stable.
Description
Technical field
This utility model relates to oral cavity medical apparatus, is specifically related to a kind of dental handpiece air-flow stable-pressure device.
Background technology
Dental handpiece is one of equipment of oral medical indispensability, and the field of using more and more widely, except the department of stomatology, also has the use of internal medicine, orthopaedics, beauty and shaping industry.The kind of dental handpiece is more, can be divided into high speed handpiece and low speed mobile phone according to rotating speed and structure.High speed handpiece is to utilize the miniature turbine in the high pressure air drives mobile phone head to rotate, and the milling tools that drives the mobile phone front end is handled tooth.General dental handpiece does not have the air-flow stable-pressure device, if the extraneous air-flow instability that enters in the dental handpiece can make the air pressure instability in the dental handpiece, thereby causes the rotary speed unstabilization of turbine fixed, and influence is to the polishing effect of tooth.
The utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of dental handpiece air-flow stable-pressure device, and it can provide stable air-flow for the turbine of dental handpiece, make the stabilization of speed of turbine.
For addressing the above problem, the technical scheme that this utility model adopted is as follows:
A kind of dental handpiece air-flow stable-pressure device, it comprises the air inlet valve body, one free end of air inlet valve body connects the air inlet pipe of dental handpiece, a pair of axisymmetric venthole is established at the middle part of air inlet valve body, one valve body cover is sleeved on the intake valve body and bottom and air inlet valve body interference fit, the top of valve body cover is connected with the escape pipe of dental handpiece, establish the slip cap and the spring of the venthole top that is sleeved on the air inlet valve body in the inner chamber of described valve body cover, spring is between the projection of slip cap and valve body cover inner chamber, when moving up and down, the sheathed spout hole of described valve body, slip cap can open or close spout hole on the air inlet valve body.
Preferably, described air inlet valve body is established annular groove at the free end that is connected with air inlet pipe, the mid-sealing ring of annular groove.
Preferably, the inner chamber of described valve body cover is established for the annular bead of blocking slip cap.
Preferably, described slip cap is the slip copper sheathing.
Compared to existing technology, the beneficial effects of the utility model are:
This utility model provides the stable-pressure device of the air-flow in a kind of stable dental handpiece, when the air-flow in entering dental handpiece is excessive, bigger from the effusive stream pressure of the venthole of air inlet valve body, promote slip cap to the motion of the top of valve body, air-flow flows out from the spout hole of valve body cover, along with overflowing of air-flow, pressure reduces gradually, slip cap is returned to original position gradually under the effect of spring, spout hole is closed, thereby make the intake valve body that predetermined high pressure can be provided for the turbine of dental handpiece.
Below in conjunction with the drawings and specific embodiments this utility model is described in further detail.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Wherein, 1-air inlet valve body; The 11-venthole; 2-valve body cover; The 21-spout hole; The 22-annular bead; The 23-projection; The 3-slip cap; The 4-spring; The 5-sealing ring.
The specific embodiment
Please refer to Fig. 1, dental handpiece of the present utility model comprises air inlet valve body 1, valve body cover 2, slip cap 3 and spring 4 with the air-flow stable-pressure device.One free end of air inlet valve body 1 connects the air inlet pipe of dental handpiece, and a pair of axisymmetric venthole 11 is established at the middle part of air inlet valve body 1.Valve body cover 2 is sleeved on the air inlet valve body 1 and bottom and air inlet valve body interference fit, and the top of valve body cover 2 is connected with the escape pipe of dental handpiece.Slip cap 3 and spring 4 place the inner chamber of valve body cover and are sleeved on venthole 11 tops of air inlet valve body 1.Spring 4 is between the projection 23 of slip cap 3 and valve body cover inner chamber.Described valve body cover 2 is established spout hole 21, can open or close spout hole 21 when slip cap 3 moves up and down on air inlet valve body 1.
Operation principle of the present utility model is as follows:
High pressure draught enters the air inlet valve body from air inlet pipe, and when the pressure in the air inlet valve body during greater than predetermined value, a part of high pressure gas fails to be convened for lack of a quorum and flows out from venthole, the promotion slip cap moves upward, open spout hole, high pressure draught is gone out from spout hole, has reduced the pressure in the air inlet valve body; Along with overflowing of high pressure draught, the pressure in the air inlet valve body reduces gradually, and slip cap is got back to original position to lower slider gradually under the effect of the restoring force of spring, close spout hole, thereby makes pressure stability in the air inlet valve body in predetermined value.
As preferred version of the present utility model, described air inlet valve body 1 is established annular groove (figure is mark not), the mid-sealing ring 5 of annular groove at the free end that is connected with air inlet pipe.
As preferred version of the present utility model, the inner chamber of described valve body cover 2 is established the annular bead 22 of withstanding slip cap, and slip cap 3 is blocked by annular bead 22 after upwards sliding into and opening spout hole 21, in case the sliding stop cover continues upwards to slide spring 4 is compressed to degeneration.
Preferably, described slip cap 3 is the slip copper sheathing.
Above-mentioned embodiment only is a preferred implementation of the present utility model; can not limit the scope of this utility model protection with this, the variation of any unsubstantiality that those skilled in the art is done on basis of the present utility model and replacement all belong to this utility model scope required for protection.
Claims (4)
1. dental handpiece air-flow stable-pressure device, it is characterized in that: comprise the air inlet valve body, one free end of air inlet valve body connects the air inlet pipe of dental handpiece, a pair of axisymmetric venthole is established at the middle part of air inlet valve body, one valve body cover is sleeved on the intake valve body and bottom and air inlet valve body interference fit, the top of valve body cover is connected with the escape pipe of dental handpiece, establish the slip cap and the spring of the venthole top that is sleeved on the air inlet valve body in the inner chamber of described valve body cover, spring is between the projection of slip cap and valve body cover inner chamber, when moving up and down, the sheathed spout hole of described valve body, slip cap can open or close spout hole on the air inlet valve body.
2. dental handpiece air-flow stable-pressure device as claimed in claim 1 is characterized in that: described air inlet valve body is established annular groove at the free end that is connected with air inlet pipe, the mid-sealing ring of annular groove.
3. dental handpiece air-flow stable-pressure device as claimed in claim 1 is characterized in that: the inner chamber of described valve body cover is established for the annular bead of blocking slip cap.
4. dental handpiece air-flow stable-pressure device as claimed in claim 1, its feature is on ground: described slip cap is the slip copper sheathing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320060022 CN203074888U (en) | 2013-01-31 | 2013-01-31 | Airflow pressure stabilizing device for dental handpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320060022 CN203074888U (en) | 2013-01-31 | 2013-01-31 | Airflow pressure stabilizing device for dental handpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203074888U true CN203074888U (en) | 2013-07-24 |
Family
ID=48820777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320060022 Expired - Lifetime CN203074888U (en) | 2013-01-31 | 2013-01-31 | Airflow pressure stabilizing device for dental handpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203074888U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106491217A (en) * | 2016-11-29 | 2017-03-15 | 桂林市啄木鸟医疗器械有限公司 | A kind of overload protection arrangement and the high-speed dental handpiece containing which |
| CN106859786A (en) * | 2017-03-07 | 2017-06-20 | 佛山市彤鑫医疗器材股份有限公司 | A kind of dental handpiece and its anti-suck-back device |
-
2013
- 2013-01-31 CN CN 201320060022 patent/CN203074888U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106491217A (en) * | 2016-11-29 | 2017-03-15 | 桂林市啄木鸟医疗器械有限公司 | A kind of overload protection arrangement and the high-speed dental handpiece containing which |
| WO2018099193A1 (en) * | 2016-11-29 | 2018-06-07 | 桂林市啄木鸟医疗器械有限公司 | Overload protection device and high-speed dental handpiece comprising same |
| US11241298B2 (en) | 2016-11-29 | 2022-02-08 | Guilin Woodpecker Medical Instrument Co., Ltd. | Overload protection device and high-speed dental handpiece comprising same |
| CN106859786A (en) * | 2017-03-07 | 2017-06-20 | 佛山市彤鑫医疗器材股份有限公司 | A kind of dental handpiece and its anti-suck-back device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130724 |
|
| CX01 | Expiry of patent term |