CN2318991Y - Drill needle mounting/dismounting mechanism of tooth drill - Google Patents
Drill needle mounting/dismounting mechanism of tooth drill Download PDFInfo
- Publication number
- CN2318991Y CN2318991Y CN 97227789 CN97227789U CN2318991Y CN 2318991 Y CN2318991 Y CN 2318991Y CN 97227789 CN97227789 CN 97227789 CN 97227789 U CN97227789 U CN 97227789U CN 2318991 Y CN2318991 Y CN 2318991Y
- Authority
- CN
- China
- Prior art keywords
- drill point
- drill
- chuck
- charging crane
- pressing cover
- 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 drill needle assembly and disassembly mechanism of a dental drill. The utility model is characterized in that in a shaft sleeve 1, at least compression spring 3 is sheathed on a drill needle insertion end A of the shaft sleeve 1, and one elastic drill needle gripping head 5 can be axially installed on one end of the compression spring 3 far a way from the drill needle insertion end A in a sliding way; the gripping head has more than two petal-shaped elastic gripping heads, and a wedge-shaped conical surface is formed on the outer circumference of each gripping head; at the same time, wedge-shaped conical surfaces which are matched with the wedge-shaped conical surfaces are correspondingly formed on an inner wall of the shaft sleeve 1, one pressing end B is arranged on one end of the drill needle gripping head 5, and the end of the drill needle gripping head 5 is opposite to ends of the gripping heads. The utility model can be used for various dental drills such as a high-speed air turbine dental drill, etc.; the utility model has the advantages of simple structure and convenient assembly and disassembly; the utility model grips reliably, and any other auxiliary tools are not needed.
Description
This utility model relates to the drill point charging crane of dental drill.
In dental drill, for the clamping drill point, following several method commonly used:
1. utilize the frictional force of axle core folder spring that drill point is clamped, during the loading and unloading drill point, need the special instrument that ejects and be pressed into drill point.
2. the springlock cover clamping drill point that utilizes spiral to clamp needs special screwing tool during loading and unloading.
The purpose of this utility model provides a kind of simple in structure, the reliable dental drill drill point of easy to loading and unloading, clamping charging crane.
This utility model is to realize like this, promptly, this utility model provides a kind of drill point charging crane of dental drill, this mechanism has can adorn the axle sleeve of inserting drill point, it is characterized in that, in described axle sleeve, at the sheathed at least compression spring of the drill point insertion end A of this axle sleeve, a end at described compression spring away from drill point insertion end A, can install an elastic drill point chuck axially slidably, this drill point chuck is roughly the member of a shape, and at least at one end forms a hollow axle, its hollow axle axially have at least two cannelures, to form the flap collet more than two lobes, and form the wedge conical surface at the excircle of chuck, and the inwall at axle sleeve correspondingly forms the wedge conical surface that matches with the described wedge conical surface simultaneously, and an end relative with its chuck end of described drill point chuck has a press-side B.
Between described spring and drill point insertion end A, can be provided with an axle center sleeve pipe.
Between described spring and described drill point chuck, also can be provided with isolation pad.
Described press-side B preferably protrudes in described axle sleeve.
Advantageously, described drill point chuck has four symmetric elasticity lobes.
Best described drill point charging crane has the wind wheel of fixedlying connected with it, to be used for high speed turbine dental drill.
Particularly advantageously be, described drill point charging crane one end is arranged on the handpiece body of dental drill by a bearing, the other end is arranged on head by another bearing and covers, described head lid lid is loaded on the described handpiece body, and, cover at described head, suit one pressing cover, between described head lid and described pressing cover, a compression spring is established in support, described head lid has a stop lug that is used to block pressing cover in the top, described pressing cover and axle sleeve have a relative distance, so that when pushing described pressing cover, pressing cover can make described drill point chuck move down one with respect to axle sleeve the chuck end of drill point chuck is opened to load and unload the distance of drill point by the press-side B of the described drill point chuck of contact.
Useful is, between described handpiece body and bearing, and between described head lid and bearing, is respectively equipped with an O type rubber ring that is used for damping.
Described in addition head lid can be with being threaded with described handpiece body.
This utility model also has following advantage:
1. spring is directly pushed down the purl part, and the conical surface is coincide, and is in self-locking state, and clamping is reliable.
2. the part that is used for the clamping drill point all is encapsulated in the rotor shaft, helps the pollution that the head global design is not subjected to dirts such as drilling.
3. have good positioning.
4. easy to manufacture, cost is lower, is convenient to promote the use of.
Below in conjunction with accompanying drawing, this utility model is further described:
Fig. 1 is the structural representation of drill point charging crane of the present utility model.
Fig. 2 is the generalized section of the planform of elasticity drill point chuck.
Fig. 3 is the profile sketch map of the planform of elasticity drill point chuck.
Fig. 4 is the vertical view of the planform of elasticity drill point chuck shown in Figure 3.
Fig. 5 is used for the sketch map of high-speed air turbine dental drill head for drill point charging crane of the present utility model.
Label shown in the figure is respectively:
1-axle sleeve 2-axle center sleeve pipe
3-compression spring 4-isolation pad
5-elasticity drill point chuck 6-handpiece body
7 and 8-O type rubber ring 9 and 10-bearing
11-wind wheel 12-head lid
13-compression spring 14-pressing cover
A-drill point insertion end
The press-side of B-elasticity drill point chuck 5
The bare terminal end of C-elasticity drill point chuck 5
Drill point charging crane architectural feature roughly shown in Fig. 1-4 is as follows: the drill point charging crane of dental drill, this mechanism has can adorn the axle sleeve 1 of inserting drill point, it is characterized in that, in described axle sleeve 1, at the sheathed at least compression spring 3 of the drill point insertion end A of this axle sleeve, a end at described compression spring 3 away from drill point insertion end A, can install an elastic drill point chuck 5 axially slidably, this drill point chuck 5 is roughly the member of a shape, and at least at one end form a hollow axle, its hollow axle axially have at least two cannelures, to form the flap collet more than two lobes, and form the wedge conical surface at the excircle of chuck, and the inwall at axle sleeve 1 correspondingly forms the wedge conical surface that matches with the described wedge conical surface simultaneously, and an end relative with its chuck end of described drill point chuck 5 has a press-side B.
In addition as shown in Figure 1, between described spring 3 and drill point insertion end A, be provided with an axle center sleeve pipe 2; Between described spring 3 and described drill point chuck 5, be provided with isolation pad 4; Described press-side B protrudes in described axle sleeve 1.
Described drill point chuck 5 shown in Figure 4 has four symmetric elasticity lobes.
As shown in Figure 5, drill point charging crane of the present utility model preferably has the wind wheel 11 of fixedlying connected with it under the situation that is used for high-speed turbine pressure brill, and promptly this wind wheel 11 is fixedly mounted on the axle sleeve 1 of drill point charging crane.
Particularly, in this case, described drill point charging crane one end is arranged on the handpiece body 6 of dental drill by a bearing 9, the other end is arranged on the head lid 12 by another bearing, described head lid 12 lids are loaded on the described handpiece body 6, and, cover at described head, suit one pressing cover 14, between described head lid 12 and described pressing cover 14, a compression spring 13 is established in support, described head lid 12 has a stop lug that is used to block pressing cover 14 in the top, and the relative distance that has of described pressing cover 14 and axle sleeve 1 is so that when pushing described pressing cover 14, pressing cover can make described drill point chuck 5 move down one with respect to axle sleeve 1 chuck end of drill point chuck 5 is opened to load and unload the distance of drill point by the press-side B of the described drill point chuck 5 of contact.
Among Fig. 5, between described handpiece body 6 and bearing 9, and between described head lid 12 and bearing 10, be respectively equipped with an O type rubber ring 7 and 8 that is used for damping.In addition, described head lid 12 is threaded with described handpiece body 6.But also can adopt other connected mode.
Among Fig. 5, compressed air promotes wind wheel 11 rotations, and wind wheel 5 is fixed on the middle part of axle sleeve 1, and two ends are by high-speed bearing 9 and 10 supportings, and O type rubber ring 7 and 8 is used for the damping of axle system.
Fig. 1 is the cut-away view of rotor shaft, and top is the collet 5 of holding drill point tightly, and the middle part is isolation pad 4 and spring 3, the bottom is an axle center sleeve pipe 2, the shape of collet is the shape of many lobes band conical surface shown in Fig. 1-4, the conical surface of its conical surface and axle sleeve 1 inwall matches.
Its work process is roughly, drill point inserts from the A end of axle sleeve 1, enter the end of collet by the endoporus that passes the endoporus of spring 3 and isolation pad 4 with the concentric axle center of axle sleeve pipe 2, when pressing the B end of pressing collet, by isolation pad 4 compression springs 3, collet 5 this moment sliding to the conical surface of inboard wall of axle sleeve 1 than larger diameter end, open effect because self of the elasticity lobe of collet be elastic, and the endoporus of the chuck end C of collet is enlarged, drill point can insert in the endoporus of collet 5 smoothly, when unclamping to the pushing of B end, collet 5 is under the effect of compression spring 3, collet axially upwards slides to the smaller diameter end of the conical surface of inboard wall of axle sleeve 1, tighten up again many lobes chuck end C endoporus and pin drill point.Press once more when pressing the B end and repeat above process, collet will unclamp the cobalt pin, and drill point can be pulled out from axle like a cork.
Be used at this utility model under the situation of high speed turbine dental drill, as shown in Figure 5, its pushing of B end to collet 5 is by pushing of pressing cover 14 realized.In addition, wherein also installed the compression spring 13 that is used to reset, this reducible compression spring 13 is used for pressing cover 14 is held up, and making it has certain spacing distance with rotor shaft, thereby does not influence the rotor shaft rotation.
Promptly, the drill point of dental drill drill point charging crane of the present utility model is located with axle sleeve 1 concentric axle center sleeve pipe 2 and collet 5, be used to make drill point and axle sleeve 1 to keep concentric, the conical surface of collet 5 matches with the conical surface of axle sleeve 1 inwall under compression spring 3 effects at axle middle part, the internal diameter of collet is dwindled embrace drill point.Therefore can not come off after drill point is fastened.In the time of need unloading drill point, the press-side B of finger pressure collet once more, collet 5 slides and loses chucking power to the larger diameter end of the conical surface.Just can successfully extract drill point this moment.
The part that dental drill drill point charging crane of the present utility model will be used to load and unload drill point all is enclosed in the axle sleeve.Generally speaking, the outstanding axle sleeve 1 about 0.5-1mm of the press-side B of collet 5.
Claims (10)
1, the drill point charging crane of dental drill, this mechanism has can adorn the axle sleeve (1) of inserting drill point, it is characterized in that, in described axle sleeve (1), at the sheathed at least compression spring (3) of the drill point insertion end A of this axle sleeve, a end at described compression spring (3) away from drill point insertion end A, can install an elastic drill point chuck (5) axially slidably, this drill point chuck (5) is roughly the member of a shape, and at least at one end form a hollow axle, its hollow axle axially have at least two cannelures, forming the flap collet more than two lobes, and form the wedge conical surface at the excircle of chuck, inwall at axle sleeve (1) correspondingly forms the wedge conical surface that matches with the described wedge conical surface simultaneously, and an end relative with its chuck end of described drill point chuck (5) has a press-side B.
2, the drill point charging crane of dental drill as claimed in claim 1 is characterized in that, between described spring 3 and drill point insertion end A, is provided with an axle center sleeve pipe (2).
3, the drill point charging crane of dental drill as claimed in claim 1 is characterized in that, is provided with isolation pad (4) between described spring 3 and described drill point chuck 5.
4, the drill point charging crane of dental drill as claimed in claim 1 is characterized in that, described press-side B protrudes in described axle sleeve (1).
5, the drill point charging crane of dental drill as claimed in claim 1 is characterized in that, described drill point chuck 5 has four symmetric elasticity lobes.
6, the drill point charging crane as one of claim 1-5 described dental drill is characterized in that, described drill point charging crane has and the wind wheel of fixedlying connected (11).
7, drill point charging crane as one of claim 1-5 described dental drill, it is characterized in that, described drill point charging crane one end is arranged on the handpiece body (6) of dental drill by a bearing (9), the other end is arranged on the head lid (12) by another bearing, described head lid (12) lid is loaded on the described handpiece body (6), and, cover at described head, suit one pressing cover (14), between described head lid (12) and described pressing cover (14), a compression spring (13) is established in support, described head lid (12) has one in the top and is used to block the stop lug of pressing cover (14), described pressing cover (14) and axle sleeve (1) have a relative distance, so that when pushing described pressing cover (14), pressing cover can make described drill point chuck (5) move down one with respect to axle sleeve (1) chuck end of drill point chuck (5) is opened to load and unload the distance of drill point by the press-side B of the described drill point chuck of contact (5).
8, the drill point charging crane of dental drill as claimed in claim 6, it is characterized in that, described drill point charging crane one end is arranged on the handpiece body (6) of dental drill by a bearing (9), the other end is arranged on the head lid (12) by another bearing, described head lid (12) lid is loaded on the described handpiece body (6), and, cover at described head, suit one pressing cover (14), between described head lid (12) and described pressing cover (14), a compression spring (13) is established in support, described head lid (12) has one in the top and is used to block the stop lug of pressing cover (14), described pressing cover (14) and axle sleeve (1) have a relative distance, so that when pushing described pressing cover (14), pressing cover can make described drill point chuck (5) move down one with respect to axle sleeve (1) chuck end of drill point chuck (5) is opened to load and unload the distance of drill point by the press-side B of the described drill point chuck of contact (5).
9, the drill point charging crane of dental drill as claimed in claim 8 is characterized in that, between described handpiece body (6) and bearing (9), and between described head lid (12) and bearing (10), be respectively equipped with O type rubber ring (7) and (8) that are used for damping.
10, the drill point charging crane of dental drill as claimed in claim 9 is characterized in that, described head lid (12) is threaded with described handpiece body (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97227789 CN2318991Y (en) | 1997-10-21 | 1997-10-21 | Drill needle mounting/dismounting mechanism of tooth drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97227789 CN2318991Y (en) | 1997-10-21 | 1997-10-21 | Drill needle mounting/dismounting mechanism of tooth drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2318991Y true CN2318991Y (en) | 1999-05-19 |
Family
ID=33941093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97227789 Expired - Fee Related CN2318991Y (en) | 1997-10-21 | 1997-10-21 | Drill needle mounting/dismounting mechanism of tooth drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2318991Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103720516A (en) * | 2012-10-11 | 2014-04-16 | 刘晓霞 | Dental drill of disposable pressing turbine |
| CN104706430A (en) * | 2015-03-30 | 2015-06-17 | 桂林市啄木鸟医疗器械有限公司 | Dental high-speed turbine handpiece head and central spindle thereof |
| WO2022087773A1 (en) * | 2020-10-26 | 2022-05-05 | 深圳市雅维医疗器械有限公司 | Chuck and dental handpiece |
-
1997
- 1997-10-21 CN CN 97227789 patent/CN2318991Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103720516A (en) * | 2012-10-11 | 2014-04-16 | 刘晓霞 | Dental drill of disposable pressing turbine |
| CN103720516B (en) * | 2012-10-11 | 2018-09-25 | 郑州泽正技术服务有限公司 | Disposable pressing dental turbine unit |
| CN104706430A (en) * | 2015-03-30 | 2015-06-17 | 桂林市啄木鸟医疗器械有限公司 | Dental high-speed turbine handpiece head and central spindle thereof |
| WO2022087773A1 (en) * | 2020-10-26 | 2022-05-05 | 深圳市雅维医疗器械有限公司 | Chuck and dental handpiece |
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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 |