JPH01106108U - - Google Patents
Info
- Publication number
- JPH01106108U JPH01106108U JP20128287U JP20128287U JPH01106108U JP H01106108 U JPH01106108 U JP H01106108U JP 20128287 U JP20128287 U JP 20128287U JP 20128287 U JP20128287 U JP 20128287U JP H01106108 U JPH01106108 U JP H01106108U
- Authority
- JP
- Japan
- Prior art keywords
- chuck
- base
- nut
- pawls
- user
- 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.)
- Pending
Links
Landscapes
- Gripping On Spindles (AREA)
Description
第１図は本考案にかかるドリルチヤツク機構の
好適な実施例を示す要部縦断面図、第２図は従来
のドリルチヤツク機構の１例を示す一部破断図で
ある。
３０……ドリル軸、３０ａ，３２ｂ……内歯部
、３２……チヤツクベース、３２ａ……チヤツク
爪ガイド溝、３４……チヤツク爪、３４ａ……チ
ヤツクねじ、３６……チヤツクナツト、３８……
送りスリーブ、４０……締付けスリーブ、４６，
４８……遊星歯車。
FIG. 1 is a vertical cross-sectional view of a main part showing a preferred embodiment of a drill chuck mechanism according to the present invention, and FIG. 2 is a partially cutaway view showing an example of a conventional drill chuck mechanism. 30...Drill shaft, 30a, 32b...Internal teeth, 32...Chuck base, 32a...Chuck pawl guide groove, 34...Chuck pawl, 34a...Chuck screw, 36...Chuck nut, 38...
Feed sleeve, 40... Tightening sleeve, 46,
48... Planetary gear.
Claims (1)
が設けられたチヤツクベースと、 前記チヤツクベースのチヤツク爪ガイド溝にチ
ヤツクベース軸と所定の傾きで摺動自在に導かれ
るよう装着され外周にチヤツクねじが設けられた
複数のチヤツク爪と、 前記チヤツクベースの周囲に該チヤツクベース
と回動自在に装着され前記チヤツク爪のチヤツク
ねじと噛み合いその回転によつてチヤツク爪をチ
ヤツクベース軸に対して所定の傾きで往復駆動す
るナツトねじ部を有するチヤツクナツトと、 前記チヤツクナツトに固定され、使用者が把持
可能に外部に露出して設けられた送りスリーブと
、 前記送りスリーブに対して減速機構を介して連
結され使用者が把持可能に外部に露出して設けら
れた締付けスリーブと、を含み、 使用者が送りスリーブを把持した状態でドリル
軸を回転することによりチヤツク爪を早送りさせ
、又締付け位置近傍において使用者が締付けスリ
ーブを把持してドリル軸を回転することによりチ
ヤツク爪とチヤツクナツトとの相対回転速度を低
速度にしてチヤツク爪を倍力駆動し工具の着脱を
十分なトルクで行うことを特徴とするドリルチヤ
ツク機構。[Scope of Claim for Utility Model Registration] A chuck base fixed to a drill shaft and provided with a plurality of chuck pawl guide grooves, and a chuck base installed in the chuck pawl guide groove so as to be slidably guided at a predetermined inclination relative to the chuck base shaft. a plurality of chuck pawls each having a chuck screw provided on its outer periphery; and a plurality of chuck pawls mounted around the chuck base so as to be rotatable with the chuck base, and meshing with the chuck screws of the chuck pawls and thereby positioning the chuck pawls in a predetermined position relative to the chuck base axis. a chuck nut having a nut thread that reciprocates at an inclination of , a feed sleeve fixed to the chuck nut and exposed to the outside so that it can be grasped by a user, and connected to the feed sleeve via a speed reduction mechanism. and a tightening sleeve that is exposed to the outside and can be grasped by the user, and when the user rotates the drill shaft while grasping the feed sleeve, the chuck jaw is rapidly forwarded, and the chuck jaw is fast-forwarded in the vicinity of the tightening position. When the user grips the tightening sleeve and rotates the drill shaft, the relative rotational speed between the chuck pawl and the chuck nut is reduced to a low speed, thereby driving the chuck pawl with increased force and attaching/detaching the tool with sufficient torque. Drill chuck mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20128287U JPH01106108U (en) | 1987-12-29 | 1987-12-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20128287U JPH01106108U (en) | 1987-12-29 | 1987-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01106108U true JPH01106108U (en) | 1989-07-17 |
Family
ID=31491652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20128287U Pending JPH01106108U (en) | 1987-12-29 | 1987-12-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01106108U (en) |
-
1987
- 1987-12-29 JP JP20128287U patent/JPH01106108U/ja active Pending
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