JPS6317460Y2 - - Google Patents
Info
- Publication number
- JPS6317460Y2 JPS6317460Y2 JP1983016081U JP1608183U JPS6317460Y2 JP S6317460 Y2 JPS6317460 Y2 JP S6317460Y2 JP 1983016081 U JP1983016081 U JP 1983016081U JP 1608183 U JP1608183 U JP 1608183U JP S6317460 Y2 JPS6317460 Y2 JP S6317460Y2
- Authority
- JP
- Japan
- Prior art keywords
- stopper
- cutting tool
- rotating shaft
- hole
- handle
- 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
Links
- 230000002093 peripheral effect Effects 0.000 description 9
- 238000001125 extrusion Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Details Of Cutting Devices (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、バネ部材によつて駆動軸の中心方向
に付勢される止体の内周端を、駆動軸の内部に
挿入した被止部材、例えば、切削具の柄の外周
壁面に圧接することにより、切削具の柄を止体
によつて駆動軸に止するチヤツク機構に関する
ものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention is a method of connecting the inner circumferential end of a stop body, which is biased toward the center of the drive shaft by a spring member, to a stop body inserted into the inside of the drive shaft. The present invention relates to a chuck mechanism that fixes the handle of a cutting tool to a drive shaft by means of a stopper, which is brought into pressure contact with the outer circumferential wall surface of the handle of the cutting tool.
（従来例の構成とその問題点）
第１図は、従来のチヤツク機構を内装した歯科
治療用エアタービンヘツドの構成を示すもので、
１はハンドピース（図示しない）の先端に取り付
けられたヘツドケース、２は軸受３を介してヘツ
ドケース１に回動自在に内装された回転軸、４は
回転軸２の外周壁面上に固着されたタービンブレ
ードで、このタービンブレード４に向けて圧縮空
気を噴射すると、回転軸２が所定の方向に回転す
る。５は、止体６を内周壁面に円周方向に突設
した中央部の外周壁面をアーチ状に凹ませて、中
央部の肉厚を両端部の肉厚よりも薄くすると共
に、肉薄部に中心線方向に数本のすり割７を切つ
て、回転軸２の半径方向へのバネ力を持たせた円
筒状のバネ部材で、このバネ部材５の両端部の内
径は挿入する切削具８の柄９の外径と等しいか又
は若干大きく、止体６の内周端の内径は切削具
８の柄９の外径よりも小さい。１０は切削具８の
柄９を押し出すための押出治具（図示しない）を
挿通する穴１１が中心部に穿設されたストツパ
で、このストツパ１０は回転軸２の後端に固着さ
れる。１２はバネ部材５に挿着可能な切削具８の
柄９の最大径と等しい内径を有するリング状のチ
エツカで、このチエツカ１２はバネ部材５を圧入
した回転軸２の先端に固着される。１３はヘツド
ケース１の上端部に螺着された上蓋で、この上蓋
１３の中心部には、ストツパ１０の穴１１と対向
する位置に、穴１１と同様、切削具８の柄９を押
し出すための押出治具を挿通する穴１４が穿設さ
れている。(Conventional configuration and its problems) Figure 1 shows the configuration of an air turbine head for dental treatment that incorporates a conventional chuck mechanism.
Reference numeral 1 denotes a head case attached to the tip of a handpiece (not shown), 2 a rotary shaft rotatably installed in the head case 1 via a bearing 3, and 4 a turbine fixed on the outer peripheral wall of the rotary shaft 2. When the blades inject compressed air toward the turbine blades 4, the rotating shaft 2 rotates in a predetermined direction. 5 is provided with a stopper 6 protruding from the inner peripheral wall surface in the circumferential direction, and the outer peripheral wall surface of the central part is recessed in an arch shape, so that the thickness of the central part is thinner than that of both ends, and the thin part It is a cylindrical spring member in which several slots 7 are cut in the direction of the center line to provide spring force in the radial direction of the rotating shaft 2. The inner diameter of the inner peripheral end of the stopper body 6 is smaller than the outer diameter of the handle 9 of the cutting tool 8 . Reference numeral 10 denotes a stopper having a hole 11 in the center thereof through which an extrusion jig (not shown) for extruding the handle 9 of the cutting tool 8 is inserted, and this stopper 10 is fixed to the rear end of the rotary shaft 2. Reference numeral 12 denotes a ring-shaped checker having an inner diameter equal to the maximum diameter of the handle 9 of the cutting tool 8 that can be inserted into the spring member 5, and this checker 12 is fixed to the tip of the rotating shaft 2 into which the spring member 5 is press-fitted. Reference numeral 13 denotes an upper lid screwed onto the upper end of the head case 1. At the center of the upper lid 13, a hole 11 for pushing out the handle 9 of the cutting tool 8, similar to the hole 11, is provided at a position opposite to the hole 11 of the stopper 10. A hole 14 is bored through which an extrusion jig is inserted.
このように構成された従来例では、バネ部材５
の先端部まで柄９を挿入させた切削具８の刃先１
５に圧入治具（図示しない）を当接させて、切削
具８を中心方向に働らくバネ部材５のバネ力に抗
して柄３の後端がストツパ１０に当接するまで押
し込めば、止体６の内周壁面が柄９の外周壁面
に圧接して、柄９が止体６によつて止され、
切削具８が回転軸２に取り付けられる。又、スト
ツパ１０に当接している切削具８の柄９の後端に
上蓋１３の穴１４及びストツパ１０の穴１１に挿
通した押出治具の先端を当接させて、押出治具を
バネ部材５のバネ力に抗してバネ部材５の中に押
し込めば、柄９が止体６の間から押し出され
て、切削具８が回転軸２から取り外される。とこ
ろで、切削具８の着脱に際しては、その都度圧入
治具及び押出治具が必要になるため、切削具８の
挿脱作業が面倒になり、且つ、ヘツドケース１の
外径が異なるハンドピースを使用するときには、
該当する治具を捜し出す手間が余分に掛かつて、
増々、切削具８の挿脱作業が面倒になる欠点があ
る。又、これ等の治具を紛失すると、切削具８の
挿脱が全くできなくなる欠点があつた。更に、切
削具８の押し込み時に、切削具８をこじるように
して押し込むと、刃先１５が刃こぼれしたり、柄
９が折れる等、切削具８を破損させる欠点があ
り、又、切削具８の押し出し時に、勢いよく押出
治具を押し込むと、切削具８が飛び出して、床に
落ち、切削具８が破損する等の欠点があつた。 In the conventional example configured in this way, the spring member 5
The cutting edge 1 of the cutting tool 8 with the handle 9 inserted up to the tip of
5 with a press-fitting jig (not shown), and push the cutting tool 8 toward the center against the spring force of the spring member 5 until the rear end of the handle 3 contacts the stopper 10. The inner circumferential wall surface of the body 6 is pressed against the outer circumferential wall surface of the handle 9, and the handle 9 is stopped by the stopper body 6,
A cutting tool 8 is attached to the rotating shaft 2. Also, the tip of the extrusion jig inserted through the hole 14 of the upper cover 13 and the hole 11 of the stopper 10 is brought into contact with the rear end of the handle 9 of the cutting tool 8 that is in contact with the stopper 10, and the extrusion jig is connected to the spring member. If the cutting tool 8 is pushed into the spring member 5 against the spring force of 5, the handle 9 will be pushed out from between the stoppers 6 and the cutting tool 8 will be removed from the rotating shaft 2. By the way, when attaching and detaching the cutting tool 8, a press-in jig and an extrusion jig are required each time, so the work of inserting and removing the cutting tool 8 becomes troublesome, and it is necessary to use handpieces with different outer diameters of the head case 1. When you do,
If it takes extra time to search for the appropriate jig,
There is a drawback that the work of inserting and removing the cutting tool 8 becomes increasingly troublesome. Furthermore, if these jigs are lost, the cutting tool 8 cannot be inserted or removed at all. Furthermore, if the cutting tool 8 is pushed in with a forceful force, the cutting tool 8 may be damaged, such as the cutting edge 15 spilling or the handle 9 breaking. During extrusion, if the extrusion jig is pushed in forcefully, the cutting tool 8 will fly out and fall to the floor, resulting in damage to the cutting tool 8.
（考案の目的）
本考案の目的は、治具を用いることなく、止
体を回転軸の放射方向に移動させることにより、
回転軸への切削具の着脱が容易に行なえるチヤツ
ク機構を提供するものである。(Purpose of the invention) The purpose of the invention is to move the stopper in the radial direction of the rotation axis without using a jig.
To provide a chuck mechanism that allows a cutting tool to be easily attached to and detached from a rotating shaft.
（考案の構成）
本考案は、開放部材を回転軸の中心線方向に移
動させると、開放部材に係合した止体が回転軸
の放射方向に移動して、止体の間の内径が切削
具の柄の外径よりも大きく広がるように構成され
ている。(Structure of the invention) In the present invention, when the release member is moved in the direction of the center line of the rotation shaft, the stop bodies engaged with the release member are moved in the radial direction of the rotation shaft, and the inner diameter between the stop bodies is cut. It is configured so that it spreads out larger than the outer diameter of the handle of the ingredient.
（実施例の説明）
第２図は、本考案の一実施例の構成を示すもの
で、第１図の符号と同一符号のものは同一部分を
示しており、又、１６は回転軸２にその円周方向
に等間隔で穿設した３つの穴（第３図参照）、１
７は外径が穴１６の内径よりも若干小さい球状の
止体で、この止体１７は３つの穴１６にそれ
ぞれ遊挿される。１８は回転軸２の外周壁面上に
周設されたＣの字状の板バネで、この板バネ１８
には、内径が止体１７の外径よりも小さい穴１
９が、回転軸２の穴１６とそれぞれ対向する位置
に穿設され、それぞれの穴１６に係合する止体
１７は板バネ１８によつて回転軸２の中心方向に
付勢される。２０は回転軸２の内側にその中心線
方向に移動自在に内設された有底管状の開放部材
で、この開放部材２０には、内径が止体１７の
外径よりも小さい穴２１が、回転軸２の穴１６と
それぞれ対向する位置に穿設され（第３図参照）、
それぞれの穴２１に係合する止体１７は、その
内周端側が開放部材２０の内周壁面から回転軸２
の中心方向に突出する。２２は皿バネ２３を介し
て開放部材２０の直上に載置した、回転軸２の中
心線方向に移動自在の上蓋で、この上蓋２２は皿
バネ２３によつて図中上方に付勢されている。２
４は上蓋２２が脱落するのを防止する止め輪で、
この止め輪２４はヘツドケース１の上縁端部に螺
着されている。(Description of Embodiment) FIG. 2 shows the configuration of an embodiment of the present invention. The same reference numerals as those in FIG. Three holes drilled at equal intervals in the circumferential direction (see Figure 3), 1
Reference numeral 7 denotes a spherical stopper whose outer diameter is slightly smaller than the inner diameter of the holes 16, and this stopper 17 is loosely inserted into each of the three holes 16. Reference numeral 18 denotes a C-shaped leaf spring installed around the outer peripheral wall surface of the rotating shaft 2;
has a hole 1 whose inner diameter is smaller than the outer diameter of the stopper body 17.
9 are bored at positions facing the holes 16 of the rotary shaft 2, and the stoppers 17 that engage with the respective holes 16 are biased toward the center of the rotary shaft 2 by a leaf spring 18. Reference numeral 20 denotes a bottomed tubular open member disposed inside the rotating shaft 2 so as to be movable in the direction of its centerline. are bored at positions facing the holes 16 of the rotating shaft 2 (see Fig. 3),
The stopper body 17 that engages with each hole 21 has an inner peripheral end side extending from the inner peripheral wall surface of the open member 20 to the rotation shaft 2.
protrudes toward the center of Reference numeral 22 denotes an upper lid that is placed directly above the opening member 20 via a disc spring 23 and is movable in the direction of the center line of the rotating shaft 2. The upper lid 22 is urged upward in the figure by the disc spring 23. There is. 2
4 is a retaining ring that prevents the top cover 22 from falling off;
This retaining ring 24 is screwed onto the upper edge of the head case 1.
このように構成された本実施例では、止体１
７は、通常、板バネ１８のバネ力によつて回転軸
２の中心方向に付勢された状態で、開放部材２０
の内周壁面から内側に突出して、止体１７の間
の内径が柄９の外径より小さくなり、所謂、チヤ
ツクが閉じた状態になる。そこで、回転軸２への
切削具８の着脱時には、ハンドピースを握つた手
の指で上蓋２２を皿バネ２３のバネ力に抗して図
中下方に押し込んで、上蓋２２に当接した開放部
材２０をも板バネ１８のバネ力に抗して図中下方
に押し込むと、開放部材２０の穴２１の周囲の管
壁が止体１７に当接して、止体１７を回転軸
２の放射方向に押し込む。このため、止体１７
が開放部材２０の内周壁面上から引つ込んで、
止体１７の間の内径が切削具８の柄９の外径より
大きく広がり、所謂、チヤツクが開いた状態にな
つて、開放部材２０の中に切削具８の柄９を挿脱
することができる。又、回転軸２に切削具８を取
り付けるときには、上蓋２２を図中下方に押し込
んで、前述の如く、止体１７の間の内径を切削
具８の柄９の外径よりも大きく広げた状態で、切
削具８の柄９を開放部材２０の中に挿入した上、
上蓋２２から指を離すと、上蓋２２が皿バネ２３
のバネ力によつて図中上方に押し上げられると共
に、開放部材２０が止体１７を介して板バネ１
８のバネ力によつて図中上方に押し上げられる。
このため、板バネ１８のバネ力によつて回転軸２
の中心方向に付勢された止体１７が穴２１から
開放部材２０の内周壁面上に突出して、止体１
７の内周側端面が切削具８の柄９の外周壁面に圧
接し、所謂、切削具８の柄９を開放部材２０の中
に挿入した状態で、チヤツクが閉じて、切削具８
が回転軸２に取り付けられる。 In this embodiment configured in this way, the stopper 1
7 is normally biased toward the center of the rotating shaft 2 by the spring force of the leaf spring 18, and the opening member 20
The chuck protrudes inward from the inner circumferential wall surface of the chuck, and the inner diameter between the stoppers 17 becomes smaller than the outer diameter of the handle 9, so that the chuck is in a closed state. Therefore, when attaching and detaching the cutting tool 8 to and from the rotating shaft 2, the upper cover 22 is pushed downward in the figure against the spring force of the disc spring 23 with the fingers of the hand gripping the handpiece, and the upper cover 22 is opened when it comes into contact with the upper cover 22. When the member 20 is also pushed downward in the figure against the spring force of the leaf spring 18, the tube wall around the hole 21 of the opening member 20 comes into contact with the stopper 17, and the stopper 17 is moved toward the radial direction of the rotating shaft 2. push in the direction. For this reason, the stopper 17
is retracted from above the inner peripheral wall surface of the opening member 20,
The inner diameter between the stoppers 17 is wider than the outer diameter of the handle 9 of the cutting tool 8, so that the chuck is in an open state, and the handle 9 of the cutting tool 8 can be inserted into and removed from the open member 20. can. Furthermore, when attaching the cutting tool 8 to the rotating shaft 2, the upper cover 22 is pushed downward in the figure, so that the inner diameter between the stoppers 17 is expanded to be larger than the outer diameter of the handle 9 of the cutting tool 8, as described above. After inserting the handle 9 of the cutting tool 8 into the opening member 20,
When you release your finger from the top lid 22, the top lid 22 releases the disc spring 23.
The opening member 20 is pushed upward in the figure by the spring force of the plate spring 1 through the stopper 17.
It is pushed upward in the figure by the spring force of 8.
Therefore, due to the spring force of the leaf spring 18, the rotating shaft 2
The stopper 17, which is biased toward the center of the opening member 20, protrudes from the hole 21 onto the inner circumferential wall surface of the opening member 20, and the stopper 17
The inner end surface of the cutting tool 8 is pressed against the outer peripheral wall surface of the handle 9 of the cutting tool 8, and when the handle 9 of the cutting tool 8 is inserted into the opening member 20, the chuck is closed and the cutting tool 8
is attached to the rotating shaft 2.
尚、本考案の説明において、歯科治療用エアタ
ービンヘツドを例として説明したが、歯科治療用
切削器具、工業用切削器具のチヤツク機構として
も使用でき、又、被止部材は切削具に限定され
るものではない。 In the description of the present invention, an air turbine head for dental treatment has been explained as an example, but it can also be used as a chuck mechanism for a cutting instrument for dental treatment or an industrial cutting instrument, and the member to be stopped is not limited to a cutting instrument. It's not something you can do.
（考案の効果）
以上説明したように、本考案によれば、ハンド
ピースを持つた方の手の指で上蓋を介して開放部
材を直接的に操作するだけで、所謂ワンタツチで
チヤツクの開閉ができるので、被止体の着脱が
迅速且つ容易に行えるという利点があるのみなら
ず、被止体を挿脱するための治具が不要になつ
て、被止体の挿脱作業が簡単になると共に、治
具の紛失により被止体の挿脱ができなくなるこ
とを防止できる利点があり、又、挿脱時に被止
部材に無理な外力が加わらないので、刃先の刃こ
ぼれ、柄の折れ等、挿脱時における被止体の破
損を防止できる利点がある。(Effects of the invention) As explained above, according to the invention, the chuck can be opened and closed with a so-called one touch by simply operating the opening member directly through the top lid with the finger of the other hand holding the handpiece. This not only has the advantage of being able to quickly and easily attach and detach the object, but also eliminates the need for a jig for inserting and removing the object, which simplifies the work of inserting and removing the object. In addition, it has the advantage of preventing the object from becoming impossible to insert or remove due to loss of the jig, and since no excessive external force is applied to the object when inserting or removing the jig, there is no risk of spills on the cutting edge, breakage of the handle, etc. This has the advantage of preventing damage to the target object during insertion and removal.
第１図は従来のチヤツク機構を内装した歯科治
療用エアタービンの断面図、第２図は本考案の一
実施例を内装した歯科治療用エアタービンの半断
面図、第３図は本考案の一実施例の分解斜視図で
ある。
１……ヘツドケース、２……回転軸、３……軸
受、４……タービンブレード、５……バネ部材、
６，１７……止体、８……切削具、９……柄、
１３，２２……上蓋、１６，１９，２１……穴、
１８……板バネ、２０……開放部材、２３……皿
バネ。
Fig. 1 is a sectional view of an air turbine for dental treatment equipped with a conventional chuck mechanism, Fig. 2 is a half sectional view of an air turbine for dental treatment equipped with an embodiment of the present invention, and Fig. 3 is a sectional view of an air turbine for dental treatment equipped with an embodiment of the present invention. FIG. 2 is an exploded perspective view of one embodiment. 1... Head case, 2... Rotating shaft, 3... Bearing, 4... Turbine blade, 5... Spring member,
6, 17... Stop body, 8... Cutting tool, 9... Handle,
13, 22... Upper lid, 16, 19, 21... Hole,
18...plate spring, 20...opening member, 23...disc spring.
Claims (1)
転軸と、 前記回転軸に穿設した穴に半径方向に移動自在
に保持された止体と、 前記止体を前記回転軸の中心方向に付勢する
ようにして、前記回転軸に外装されたバネ部材
と、 前記止体の径よりも小さい径の穴が穿設され
ており、前記穴を中心線方向に移動させて、前記
穴から内側に突出して被止体を止していた前
記止体を前記穴の中に引き込むことにより、前
記被止体を開放する筒状の開放部材と からなることを特徴とするチヤツク機構。[Scope of Claim for Utility Model Registration] A rotating shaft rotatably mounted inside a head case, a stopper held movably in the radial direction in a hole bored in the rotary shaft, and a stopper that is movable in the radial direction. A spring member is mounted on the rotating shaft so as to bias the rotating shaft in the direction of the center of the rotating shaft, and a hole having a diameter smaller than the diameter of the stopper is bored, and the hole is moved in the direction of the center line. and a cylindrical opening member that opens the target object by pulling the stop body that protrudes inward from the hole and stops the target object into the hole. Check mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1608183U JPS59122107U (en) | 1983-02-08 | 1983-02-08 | chuck mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1608183U JPS59122107U (en) | 1983-02-08 | 1983-02-08 | chuck mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59122107U JPS59122107U (en) | 1984-08-17 |
| JPS6317460Y2 true JPS6317460Y2 (en) | 1988-05-18 |
Family
ID=30147384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1608183U Granted JPS59122107U (en) | 1983-02-08 | 1983-02-08 | chuck mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59122107U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH064078B2 (en) * | 1985-11-18 | 1994-01-19 | 株式会社吉田製作所 | Checking device for dental contra-angle handpiece |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5231974B2 (en) * | 1973-02-27 | 1977-08-18 | ||
| JPS5397294A (en) * | 1977-02-03 | 1978-08-25 | Micro Mega Sa | Dental implement holder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5231974U (en) * | 1975-08-28 | 1977-03-05 |
-
1983
- 1983-02-08 JP JP1608183U patent/JPS59122107U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5231974B2 (en) * | 1973-02-27 | 1977-08-18 | ||
| JPS5397294A (en) * | 1977-02-03 | 1978-08-25 | Micro Mega Sa | Dental implement holder |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59122107U (en) | 1984-08-17 |
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