JPH0319705A - Tool chuck - Google Patents

Tool chuck

Info

Publication number
JPH0319705A
JPH0319705A JP1154900A JP15490089A JPH0319705A JP H0319705 A JPH0319705 A JP H0319705A JP 1154900 A JP1154900 A JP 1154900A JP 15490089 A JP15490089 A JP 15490089A JP H0319705 A JPH0319705 A JP H0319705A
Authority
JP
Japan
Prior art keywords
ring
tool
chuck
nut
fixed
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.)
Granted
Application number
JP1154900A
Other languages
Japanese (ja)
Other versions
JPH0829441B2 (en
Inventor
Daijiro Nakamura
大治郎 中村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Delta KK
Original Assignee
Delta KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Delta KK filed Critical Delta KK
Priority to JP1154900A priority Critical patent/JPH0829441B2/en
Priority claimed from JP1272935A external-priority patent/JPH0829442B2/en
Priority to US07/537,471 priority patent/US5044643A/en
Priority to KR1019900008707A priority patent/KR910000305A/en
Priority to GB9013457A priority patent/GB2236968B/en
Publication of JPH0319705A publication Critical patent/JPH0319705A/en
Publication of JPH0829441B2 publication Critical patent/JPH0829441B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B31/00Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02Chucks
    • B23B31/10Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/1207Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
    • B23B31/1238Jaws movement actuated by a nut with conical screw-thread
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B2231/00Details of chucks, toolholder shanks or tool shanks
    • B23B2231/12Chucks having means to amplify the force produced by the actuating means to increase the clamping force
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B2231/00Details of chucks, toolholder shanks or tool shanks
    • B23B2231/38Keyless chucks for hand tools

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)

Abstract

PURPOSE:To improve operability and to prevent the chattering and looseness and fall during the work of a tool fixed by its pinching by providing a differential mechanism transmitting the turning force of an operation ring to a nut ring between the operation ring and nut ring. CONSTITUTION:When an operation ring 8 is turned in the interposing direction, the external ring 11 of a differential mechanism 10, a spherical body 14 held on a retainer 13, an internal ring 16 and a nut ring 6 are integrally rotated to interpose a tool A, the nut ring 6 is retreated in the axial direction by the backlash with the load resistance, the external ring 11, spherical body 14 and internal ring 16 are retreated via a fixed ring 7 and the internal ring 16 is press-fitted to the step part 15 of a chuck main body 2. The nut ring 6 is then rotated with a high torque via the retainer 13 with the deceleration rolling of the spherical body 14 less than the rotation of the operation ring 8 along the fixed face of the internal ring 16. In the case of releasing, due to the internal ring 16 of the differential mechanism 10 being turned and fixed when the operation ring 8 is turned in the loosening direction, a high torque is instantaneously acted and it can be turned in the loosening direction.

Description

【発明の詳細な説明】 (イ)産業上の利用分野 この発明は、例えば、電動ドリルのビット、電動ドライ
バのビット等の各種ツールの挾持固定に用いられるツー
ルチャックに関する。
DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a tool chuck used for clamping and fixing various tools such as electric drill bits and electric screwdriver bits.

(口)従来の技術 従来、上述のツールチャックとしては、例えば、操作リ
ングの回動操作によりチャック本体に取付けナットリン
グを正逆回動させ、このナットリングを螺合した複数本
の各チャック爪を拡縮方向にネジ送りして、これら各チ
ャック爪によりツールを扶持固定するツールチャック(
実開昭63−189509号公報)がある。
(Ex) Conventional technology Conventionally, the above-mentioned tool chuck has, for example, a nut ring that is attached to the chuck body by rotating an operating ring and is rotated in the forward and reverse directions, and each chuck jaw has a plurality of chuck jaws screwed together with the nut ring. A tool chuck (
Japanese Utility Model Application No. 63-189509).

(ハ)発明が解決しようとする問題点 しかし、上述のツールチャックは、操作リングの回動力
を各チャック爪に直接伝達してツールを締付け固定する
ので、ツール締付け時のトルクは操作リングの回動力に
比例して小さく、回動力以」二の高いトルクでツールを
締付け固定することは構造的に困難であるため、挾持固
定したツールにガタ付きや緩みが生じやすく、作業中に
於いてツールが脱落することがあるという問題点を有し
ている。
(c) Problems to be Solved by the Invention However, in the above-mentioned tool chuck, the rotational force of the operation ring is directly transmitted to each chuck jaw to tighten and fix the tool, so the torque when tightening the tool is generated by the rotation of the operation ring. Because it is structurally difficult to tighten and fix tools with a torque that is small in proportion to the power and as high as the turning force, the clamped and fixed tools tend to rattle or come loose, and the tools may become loose during work. This has the problem that it may fall off.

この発明は、ツール挾持時に於いて差動機構の回転伝達
体を減速して回転する特異な構成とすることにより、操
作リングを回動するよりも高いトルクが得られ、操作リ
ングとチャック本体とを相対回動ずるだけでツールを強
固に締付け固定することができるツールチャックの提供
を目的とする。
This invention has a unique configuration in which the rotation transmitting body of the differential mechanism is rotated at a reduced speed when a tool is clamped, so that a higher torque can be obtained than by rotating the operating ring, and the operating ring and chuck body are The purpose of the present invention is to provide a tool chuck that can firmly tighten and fix a tool by simply rotating it relative to the tool chuck.

(二)問題点を解決するための手段 この発明は、操作リングによりナットリングを正逆回動
して、チャック本体に取付けた複数本の各チャック爪を
ツール挾持方向に挾持摺動するツールチャックであって
、上記操作リングとナ・ソトリングとの間に、該操作リ
ングの回動力をナ・yトリングに動力伝達する差動機構
を設け、上記差動機構を操作リングに固定した外部伝達
体と、ナットリングに対して動力伝達可能に支持した回
転伝達体と、回動可能に保持した内部伝達体とで構成す
ると共に、上記内部伝達体を、回動操作時の負荷抵抗が
小さいとき外部伝達体と回転伝達体との一体的な回動を
許容し、ツール挾持時の大きな負荷抵抗により定位置に
回動固定する固定手段を設けたツールチャックであるこ
とを特徴とする。
(2) Means for Solving the Problems This invention provides a tool chuck that rotates a nut ring in the forward and reverse directions using an operation ring to grip and slide each of the plurality of chuck jaws attached to the chuck body in the tool gripping direction. A differential mechanism is provided between the operation ring and the na-to-ring to transmit the rotational force of the operation ring to the na-y-to-ring, and an external transmission body has the differential mechanism fixed to the operation ring. , a rotation transmitting body supported to be able to transmit power to the nut ring, and an internal transmitting body rotatably held, and the internal transmitting body is connected to the outside when the load resistance during rotation operation is small. The tool chuck is characterized by being provided with a fixing means that allows the transmitting body and the rotation transmitting body to integrally rotate and fixes the rotation in a fixed position by a large load resistance when the tool is clamped.

(ホ)作 用 この発明のツールチャックは、ツールを締付け固定する
場合、操作リングとチャック本体とをツール締付け方向
に相対回動することで、ツールを挾持するまでの回動操
作中は負荷抵抗が小さく、操作リングと差動機構の各要
素とを一体的に回動して、ナットリングのネジ送りによ
り複数本の各チャック爪を迅速に緊縮摺動させツールを
挾持する。
(E) Function: When the tool chuck of the present invention is tightening and fixing a tool, the operating ring and the chuck body are rotated relative to each other in the tool tightening direction. The operating ring and each element of the differential mechanism are rotated together, and the plurality of chuck jaws are quickly compressed and slid by screw feeding of the nut ring to clamp the tool.

この挾持時に於いて、ツール挾持時の負荷抵抗により差
動機構を構成する内部伝達体の回動が固定手段により固
定され、操作リングの回転速度よりも減速されて回転伝
達体が回転し、この回転伝達体の減速によって操作リン
グの回動力よりも高いトルクをナットリングに付与し、
複数本の各チャック爪によりツールを強固に締付け固定
する。
During this clamping, the rotation of the internal transmission body constituting the differential mechanism is fixed by the fixing means due to the load resistance when the tool is clamped, and the rotation transmission body rotates at a speed lower than the rotational speed of the operating ring. By decelerating the rotation transmission body, a torque higher than the rotational force of the operating ring is applied to the nut ring,
The tool is firmly tightened and fixed using multiple chuck jaws.

一方、ツールの締付け固定を解除する場合、操作リング
とチャック本体とを緩み方向に相対回動することで、差
動機構の内部伝達体が回動固定されているため瞬間的に
高いトルクが作用して、ナットリングを緩み方向に回動
ずると共に、締付け解除後の回動操作途中は負荷抵抗が
小さく、操作リングと差動機構の各要素とを一体的に回
動して、複数本の各チャック爪を迅速に拡張摺動させ、
ツールの挾持固定を解除する。
On the other hand, when releasing the tightened fixation of the tool, the operating ring and the chuck body are rotated relative to each other in the direction of loosening, and as the internal transmission body of the differential mechanism is rotationally fixed, a high torque is instantaneously applied. Then, the nut ring is rotated in the loosening direction, and the load resistance is small during the rotation operation after the tightening is released, so the operation ring and each element of the differential mechanism are rotated integrally, and multiple Each chuck jaw quickly expands and slides,
Release the clamping fixation of the tool.

(へ)発明の効果 この発明によれば、ツール挾持時に於いて差動機構の回
転伝達体を減速して回転するので、この回転伝達体の減
速によって操作リングを回動するよりも高いトルクが得
られ、操作リングとチャック本体とを相対回動するだけ
の簡単な操作により、ツールを強固に締付け固定するこ
とができる。
(F) Effects of the Invention According to this invention, the rotation transmitting body of the differential mechanism is rotated while being decelerated when holding a tool, so that a higher torque is generated by decelerating the rotation transmitting body than when rotating the operating ring. Thus, the tool can be firmly tightened and fixed by a simple operation of relatively rotating the operating ring and the chuck body.

しかも、ツールを挾持するまでの回動操作途中と、締付
け解除後の回動操作途中は負荷抵抗が小さく、操作リン
グと差動機構の各要素とを一体的に正逆回動ずることが
でき、ナットリングのネジ送りにより複数本の各チャッ
ク爪を迅速に挾持摺動してツールを締付け固定又は固定
解除することができ、操作性に優れている。
Moreover, the load resistance is small during the rotation operation until the tool is clamped and during the rotation operation after the tightening is released, and the operating ring and each element of the differential mechanism can be rotated in the forward and reverse directions as one unit. By screw feeding the nut ring, each of the plurality of chuck jaws can be quickly gripped and slid to tighten and fix or release the tool, and has excellent operability.

(ト)発明の実施例 この発明の一実施例を以下図面に基づいて詳述する。(g) Examples of the invention An embodiment of the present invention will be described in detail below based on the drawings.

図面は電動ドリルや電動ドライバ等の各種ツールの扶持
固定に用いられるツールチャックを示し、第工図及び第
2図に於いて、このツールチャ・ンク↓は、円筒形状に
形或したチャック本体2の中間部外周面に、先端側開口
部の中心に向かって集合する斜め方向に3本の各ガイド
孔3・・・を形威し、これら各ガイド孔3・・・に3本
の各チャック爪4・・・を挾持摺動可能に挿入している
The drawing shows a tool chuck used for supporting and fixing various tools such as electric drills and electric screwdrivers. Three guide holes 3 are formed on the outer circumferential surface of the intermediate portion in a diagonal direction that gather toward the center of the opening on the distal end side, and three chuck claws are formed in each of these guide holes 3. 4... is inserted so that it can be gripped and slid.

一方、このチャック本体2の基端側聞口部には電動ドリ
ル又は電動ドライバ等の回動軸を連結固5 6 定する。
On the other hand, a rotating shaft of an electric drill, an electric driver, or the like is connected and fixed to the proximal opening of the chuck body 2 .

上述のチャック本体2の中間部外周面には、各ガイド孔
3・・・の一部周面を切欠いて環状切欠き部5を形成し
、2分割可能に形成したナットリング6を環状切欠き部
5に遊嵌して、このナットリング6の内周面に螺刻した
雌ネジ6aと、各チャック爪4・・・の基端部外周面に
螺刻した各雄ネジ4a・・・とを螺合すると共に、この
ナットリング6の先端部外周面に固定リング7を圧入固
定して回動可能に保持している。
On the outer circumferential surface of the intermediate portion of the chuck body 2 described above, a part of the circumferential surface of each guide hole 3 is cut out to form an annular notch 5, and a nut ring 6 that can be divided into two is formed in the annular notch. A female thread 6a loosely fitted into the nut ring 6 and threaded on the inner circumferential surface of the nut ring 6, and a male thread 4a threaded on the outer circumferential surface of the proximal end of each chuck claw 4... At the same time, a fixing ring 7 is press-fitted and fixed to the outer circumferential surface of the distal end of the nut ring 6, and is held rotatably.

すなわち、上述のナットリング6を正逆回動することで
各チャック爪4・・・は各ガイド孔3・・に沿って拡縮
方向にネジ送りされ、これら各チャック爪4・・・の先
端側挾持部によりツールAを挾持する。
That is, by rotating the above-mentioned nut ring 6 in the forward and reverse directions, each chuck claw 4... is threaded in the expansion/contraction direction along each guide hole 3..., and the tip side of each chuck claw 4... The tool A is held by the holding part.

前述のチャック本体2の基端部外周面には断面コ字形に
形成した操作リング8を固定し、チャック本体2の中間
部外周面には円筒形状に形威した保持リング9を回動可
能に遊嵌して、この操作リング8の開放側内周面と保持
リング9の基端部外周面とを回動可能に遊嵌すると共に
、これら各リング8,9の外周面には各ローレット8a
,9aを夫々刻設している。
An operating ring 8 having a U-shaped cross section is fixed to the outer circumferential surface of the proximal end of the chuck body 2, and a retaining ring 9 having a cylindrical shape is rotatably attached to the outer circumferential surface of the intermediate portion of the chuck body 2. The inner circumferential surface of the open side of the operating ring 8 and the outer circumferential surface of the proximal end of the retaining ring 9 are loosely fitted in a rotatable manner.
, 9a are respectively engraved.

上述の操作リング8とナットリング6との間には、この
操作リング8の回動力をナットリング6に動力伝達する
ための差動機構10を介設している。
A differential mechanism 10 for transmitting the rotational force of the operating ring 8 to the nut ring 6 is interposed between the operating ring 8 and the nut ring 6 described above.

すなわち、前述のナットリング6の中間部外周面には、
差動機構■0を構成する外部リング1]を回転可能に遊
嵌し、この外部リング11と固定リング7との対向面間
に金属製の球体12を多数転動可能に保持すると共に、
この外部リング11の外周面に複数形成した各突起11
a・・・と、保持リング9の内周面に複数形成した各溝
部9b・・・とを係合して回動固定し、且つ、軸方向に
移動可能に係合している。
That is, on the outer circumferential surface of the intermediate portion of the nut ring 6,
The external ring 1 constituting the differential mechanism 0 is rotatably fitted loosely, and a number of metal spheres 12 are rotatably held between the opposing surfaces of the external ring 11 and the fixed ring 7,
Each of the plurality of protrusions 11 formed on the outer peripheral surface of this external ring 11
a... and each groove part 9b... formed in plurality on the inner circumferential surface of the retaining ring 9 are engaged to be rotationally fixed and movably engaged in the axial direction.

上述のナットリング6の基端部外周面には、差動機構1
0を構威するリテーナ13を一体的に固定し、このリテ
ーナ13の円周方向に16個所の各球体保持部1. 3
 a・・・を所定等間隔に隔てて形威し、これら各球体
保持部13a・・・に金属製の球体14を夫々転勤可能
に保持している。
The differential mechanism 1 is provided on the outer circumferential surface of the base end of the nut ring 6 described above.
0 is integrally fixed, and 16 spherical holding portions 1. 3
a... are arranged at predetermined equal intervals, and metal spheres 14 are held in each of these sphere holding portions 13a in a transferable manner.

前述のナットリング6に固定したリテーナ13と、チャ
ック本体2の中間部外周面に形威した段部15との間に
は、差動機構10を構威する内部リング16を回転可能
に保持し、この内部リング16は、保持リング9の基端
部内周面に収納保持したコイルスプリング17により、
ナットリング6上に固定されたリテーナ13の各球体1
4・・・に対して圧接する方向に常時付勢している。
An inner ring 16 that constitutes the differential mechanism 10 is rotatably held between the retainer 13 fixed to the nut ring 6 and the stepped portion 15 formed on the outer peripheral surface of the intermediate portion of the chuck body 2. , this internal ring 16 is held by a coil spring 17 housed and held on the inner circumferential surface of the proximal end of the retaining ring 9.
Each sphere 1 of the retainer 13 fixed on the nut ring 6
4... is constantly biased in the direction of pressure contact.

上述のコイルスプリング17は、保持リング9の基端部
内周面に固定したスプリング止め↑8と押圧板19との
間に圧縮保持され、且つ、この内部リング16と押圧板
19との対向面間には金属製の球体20を多数転勤可能
に保持している。
The above-mentioned coil spring 17 is compressed and held between a spring stopper ↑ 8 fixed to the inner peripheral surface of the base end of the retaining ring 9 and the pressing plate 19, and between the opposing surfaces of the inner ring 16 and the pressing plate 19. A large number of metal spheres 20 are held in a movable manner.

このコイルスプリング17は、保持リング9の先端部内
周面に対してナットリング6及び固定リング7と、各球
体12・・・と、外部リング11と、リテーナ13に保
持した各球体14・・・と、内部リング1−6と、各球
体20・・・と、押圧板19とを軸方向に常時圧接して
いる。
This coil spring 17 has a nut ring 6, a fixing ring 7, each sphere 12..., an outer ring 11, and each sphere 14 held by a retainer 13 against the inner peripheral surface of the tip end of the retaining ring 9. , the inner ring 1-6, each of the spheres 20..., and the press plate 19 are constantly pressed against each other in the axial direction.

前述の保持リング9の内周面には内部リング16の外周
面と対向して板バネ21−を固定し、内部リング16の
正逆回動が許容されるときは、板バネ2王に形成した突
起部21aと内部リング16の外周面に刻設したノッチ
面1−6aとを係合して、保持リング9と内部リング1
−6とを同一方向に回動させ、内部リング16を回動固
定すると係合が解除され、保持リング9のみの回動を許
容し、この板バネ21の突起部21aとノッチ面]−6
aとの係合によりノッチ感触を間欠的に付与する。
A leaf spring 21- is fixed to the inner circumferential surface of the aforementioned retaining ring 9 so as to face the outer circumferential surface of the inner ring 16, and when forward and reverse rotation of the inner ring 16 is allowed, the plate spring 21- is formed into a second plate spring. The retaining ring 9 and the inner ring 1 are assembled by engaging the protrusion 21a and the notch surface 1-6a carved on the outer peripheral surface of the inner ring 16.
-6 in the same direction and the inner ring 16 is rotated and fixed, the engagement is released, allowing only the retaining ring 9 to rotate, and the protrusion 21a of the leaf spring 21 and the notch surface ]-6
A notch feel is intermittently provided by engagement with a.

図示実施例は上記の如く構成するものとして、以下、ツ
ールチャック王によりツールAを挾持するときの作用動
作を説明する。
Assuming that the illustrated embodiment is configured as described above, the operation and operation when the tool A is clamped by the tool chuck king will be described below.

先ず、チャック本体2に固定した操作リング8を左手で
保持し、保持リング9を右手で保持して、これら各リン
グ8,9をツール挟持方向に相対回動ずることで、ツー
ル八を挾持するまでの回動操作途中はナットリング6に
対して付与される負荷抵抗が小さく、操作リング8の回
動方向に、軸方向に圧接された差動機構10の外部リン
グ1」−と、9 10 リテーナ13に保持した各球体14・・・と、内部リン
グ]6とを一体的に回動して、ナットリング6のネジ送
りにより複数本の各チャック爪4・・・を迅速に緊縮摺
動させツールAを扶持する。
First, hold the operating ring 8 fixed to the chuck body 2 with your left hand, hold the holding ring 9 with your right hand, and grip the tool 8 by rotating these rings 8 and 9 relative to each other in the tool gripping direction. During the rotation operation up to, the load resistance applied to the nut ring 6 is small, and the outer ring 1 of the differential mechanism 10, which is pressed against the rotation direction of the operation ring 8 in the axial direction, By integrally rotating each sphere 14 held in the retainer 13 and the internal ring 6, the plurality of chuck claws 4 are quickly tightened and slid by screw feeding the nut ring 6. Hold tool A.

この時付与されるツール挾持時の負荷抵抗により、第3
図に示すように、3本の各チャック爪4・・・に螺刻し
た各雄ネジ4a・・・と、ナットリング6に螺刻した雌
ネジ6aと9バックラッシュ寸法だけナットリング6が
軸方向に後退し、ナットリング6に固定した固定リング
7を介して、軸方向に圧接された差動機構10の外部リ
ング11と、リテーナ」3に保持した各球体14・・・
と、内部リング16とを軸方向に後退移動させ、内部リ
ング16の内周縁部をチャック本体2の段部15に圧接
して回動固定する。
Due to the load resistance applied at this time when holding the tool, the third
As shown in the figure, each male thread 4a... threaded on each of the three chuck claws 4... The outer ring 11 of the differential mechanism 10 is pressed against the outer ring 11 of the differential mechanism 10 in the axial direction via the fixed ring 7 fixed to the nut ring 6, and each sphere 14 held in the retainer 3...
Then, the inner ring 16 is moved backward in the axial direction, and the inner circumferential edge of the inner ring 16 is brought into pressure contact with the stepped portion 15 of the chuck body 2 and fixed in rotation.

すなわち、回動固定された内部リング16の固定面に沿
って、操作リング8の回転速度よりも遅い速度に各球体
44・・・が減速されて転動し、これら各球体1.4・
・・はりテーナ13を介してナットリング6を回転させ
、これら各球体14・の減速によって操作リング8の回
動力よりも高いトルクをナットリング6に付与し、第1
図に示すように、複数本の各チャック爪4・・・により
ツールAは強固に締付け固定される。
That is, each of the spheres 44 rolls along the fixed surface of the rotationally fixed inner ring 16 while being decelerated to a speed slower than the rotational speed of the operating ring 8.
The nut ring 6 is rotated via the beam retainer 13, and by deceleration of each of these spheres 14, a torque higher than the rotational force of the operating ring 8 is applied to the nut ring 6, and the first
As shown in the figure, the tool A is firmly tightened and fixed by each of the plurality of chuck claws 4.

一方、ツールAの締付け固定を解除する場合、チャック
本体2と操作リング8とを緩み方向に相対回動すること
で、回動初期は、差動機構10の内部リング1Gが回動
固定されているため瞬間的に高いトルクが作用して、ナ
ットリング6を緩み方向に回動することが容易に行え、
締付け解除後の回動操作途中は負荷抵抗が小さく、操作
リング8と差動機構10の外部リング11と、各球体]
4・・・と、内部リング16とを一体的に回動して、複
数本の各チャック爪4・・・を迅速に拡張摺動させ、ッ
ールAの扶持固定を解除する。
On the other hand, when releasing the tightening fixation of the tool A, by relatively rotating the chuck body 2 and the operating ring 8 in the loosening direction, the inner ring 1G of the differential mechanism 10 is rotationally fixed at the initial stage of rotation. Because of this, high torque acts momentarily and the nut ring 6 can be easily rotated in the direction of loosening.
During the rotation operation after the tightening is released, the load resistance is small, and the operation ring 8, the outer ring 11 of the differential mechanism 10, and each sphere]
4... and the inner ring 16 are integrally rotated to quickly extend and slide the plurality of chuck claws 4... to release the supporting fixation of the grip A.

このようにツール八の扶持時に於いて差動機構10を構
成する各球体14・・・を減速して回転するので、これ
ら各球体14・・・の減速によって操作リング8を回動
するよりも高いトルクが得られ、操作リング8とチャッ
ク本体2とを相対回動ずるだ1 ]− 12 けの簡単な操作により、ツールAを強固に締付け固定す
ることができる。
In this way, when the tool 8 is supported, each of the spheres 14 constituting the differential mechanism 10 is rotated while being decelerated, so rather than rotating the operating ring 8 by decelerating each of the spheres 14. A high torque can be obtained, and the tool A can be firmly tightened and fixed by a simple operation of relative rotation of the operating ring 8 and the chuck body 2.

しかも、ツールAを挾持するまでの回動操作途中と、締
付け解除後の回動操作途中は負荷抵抗が小さく、操作リ
ング8の回動方向と一致して差動機構10の各要素を一
体的に正逆回動ずることができ、ナットリング6のネジ
送りにより複数本の各チャック爪4・・・を迅速に挾持
摺動してツールAを扶持又は解除することができ、操作
性に優れている。
Moreover, the load resistance is small during the rotation operation until the tool A is clamped and during the rotation operation after the tightening is released, and each element of the differential mechanism 10 is integrally aligned with the rotation direction of the operation ring 8. It can be rotated in forward and reverse directions, and by screw feeding the nut ring 6, each of the multiple chuck jaws 4 can be quickly gripped and slid to support or release the tool A, offering excellent operability. ing.

なお、上述のチャック本体2と操作リング8とを、チャ
ック本体2の基端側聞口部に係合した電動ドリル又は電
動ドライバの正逆回動により相対回動するもよい。
Note that the above-mentioned chuck body 2 and the operating ring 8 may be rotated relative to each other by forward and reverse rotation of an electric drill or an electric screwdriver engaged with the proximal mouth portion of the chuck body 2.

この発明の構成と、上述の実施例との対応において、 この発明の差動機構は、実施例の差動機構10と対応し
、 以下同様に、 外部伝達体は、外部リング11と対応し、回転伝達体は
、球体14と、後述する回転ギャ22とに対応し、 内部伝達体は、内部リング16と対応し、固定手段は、
内部リング16か圧接される段部15と対応するも、 この発明は、上述の実施例の構成のみに限定されるもの
ではない。
In the correspondence between the structure of the present invention and the above-described embodiments, the differential mechanism of the present invention corresponds to the differential mechanism 10 of the embodiment, and similarly, the external transmission body corresponds to the external ring 11, The rotation transmission body corresponds to the sphere 14 and the rotation gear 22 described later, the internal transmission body corresponds to the internal ring 16, and the fixing means is
Although the inner ring 16 corresponds to the stepped portion 15 to which it is pressed, the present invention is not limited to the configuration of the above-described embodiment.

例えば、第3図に示すように、上述のナットリング6の
基端部外周面に複数個の各回転ギャ22・・・を軸支し
、これら各回転ギャ22・・・を、外部リング11に刻
設したギヤ面1lbと、内部リング16に刻設したギヤ
面16bとに夫々歯合して差動機構10を構成するもよ
く、この構成の場合、差動機構10を介して、操作リン
グ8による同動力がナットリング6に対して確実に駆動
伝達されるので、締付け力の損失が少なく、ツールAを
より強固に締付固定することができ、上述の実施例と同
等以上の効果が得られる。
For example, as shown in FIG. 3, a plurality of rotary gears 22 are pivotally supported on the outer peripheral surface of the base end of the nut ring 6, and these rotary gears 22 are connected to the outer ring 11. The differential mechanism 10 may be configured by meshing with the gear surface 1lb carved on the inner ring 16 and the gear surface 16b carved on the inner ring 16, respectively. Since the same power generated by the ring 8 is reliably transmitted to the nut ring 6, there is little loss of tightening force, and the tool A can be more firmly tightened and fixed, resulting in an effect equal to or greater than that of the above-mentioned embodiment. is obtained.

【図面の簡単な説明】[Brief explanation of the drawing]

図面はこの発明の一実施例を示し、 43 14 第1図はツールチャックの縦断側面図、第2図はツール
挾持前又は挾持解除後の差動機構を示す拡大縦断側面図
、 第3図はツール挾持時の差動機構を示す拡大縦断側面図
、 第4図は他の実施例を示す差動機構の拡大縦断側面図で
ある。 A・・ツール     1・・・ツールチャック2・・
・チャック本体  4・・・チャック爪6・・・ナット
リング  8・・・操作リング10・・・差動機構  
 」1・・・外部リング1 1. b・・・ギヤ面  
 14・・・球体15・・・段部     16・・・
内部リング1. 6 b・・・ギヤ面   22・・・
回転ギヤ1 5 憾 〜寸■の9=2箕品謂
The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal side view of a tool chuck, FIG. 2 is an enlarged longitudinal side view showing the differential mechanism before tool clamping or after tool clamping is released, and FIG. FIG. 4 is an enlarged longitudinal sectional side view showing the differential mechanism when holding a tool. FIG. 4 is an enlarged longitudinal sectional side view of the differential mechanism showing another embodiment. A...Tool 1...Tool chuck 2...
・Chuck body 4...Chuck claw 6...Nut ring 8...Operation ring 10...Differential mechanism
”1...External ring 1 1. b...Gear surface
14... Sphere 15... Step part 16...
Internal ring 1. 6 b...Gear surface 22...
Rotating gear 1 5 9 = 2 min.

Claims (1)

【特許請求の範囲】[Claims] (1)チャック本体の先端側中心部に複数本の各チャッ
ク爪を拡縮摺動可能に取付け、これら各チャック爪に螺
合したナットリングを操作リングにより正逆回動して、
ツール挾持方向に各チャック爪を挾持摺動するツールチ
ャックであって、 上記操作リングとナットリングとの間に、 該操作リングの回動力をナットリングに動力伝達する差
動機構を設け、 上記差動機構を操作リングに固定した外部伝達体と、ナ
ットリングに対して動力伝達可能に支持した回転伝達体
と、チャック本体に対して回動可能に保持した内部伝達
体とで構成すると共に、 上記内部伝達体を、回動操作途中の負荷抵抗が小さいと
き外部伝達体と回転伝達体との一体的な回動を許容し、
ツール挾持時の大きな負荷抵抗により定位置に回動固定
する固定手段を設けたツールチャック。
(1) A plurality of chuck claws are attached to the center of the tip side of the chuck body so that they can be expanded and retracted, and the nut rings screwed onto these chuck claws are rotated forward and backward using the operating ring.
A tool chuck that grips and slides each chuck jaw in the tool gripping direction, and a differential mechanism is provided between the operating ring and the nut ring to transmit the rotational force of the operating ring to the nut ring, It consists of an external transmitting body in which the moving mechanism is fixed to the operating ring, a rotation transmitting body supported to be able to transmit power to the nut ring, and an internal transmitting body rotatably held to the chuck body, and the above-mentioned Allows the internal transmission body to rotate integrally with the external transmission body and rotation transmission body when the load resistance during rotation operation is small,
A tool chuck equipped with a fixing means that rotates and fixes in a fixed position due to large load resistance when holding a tool.
JP1154900A 1989-06-16 1989-06-16 Tool chuck Expired - Lifetime JPH0829441B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP1154900A JPH0829441B2 (en) 1989-06-16 1989-06-16 Tool chuck
US07/537,471 US5044643A (en) 1989-06-16 1990-06-12 Tool chuck
KR1019900008707A KR910000305A (en) 1989-06-16 1990-06-14 Tool Chuck
GB9013457A GB2236968B (en) 1989-06-16 1990-06-15 Tool chuck

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1154900A JPH0829441B2 (en) 1989-06-16 1989-06-16 Tool chuck
JP1272935A JPH0829442B2 (en) 1989-10-19 1989-10-19 Tool chuck

Publications (2)

Publication Number Publication Date
JPH0319705A true JPH0319705A (en) 1991-01-28
JPH0829441B2 JPH0829441B2 (en) 1996-03-27

Family

ID=26483043

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1154900A Expired - Lifetime JPH0829441B2 (en) 1989-06-16 1989-06-16 Tool chuck

Country Status (2)

Country Link
JP (1) JPH0829441B2 (en)
GB (1) GB2236968B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5172923A (en) * 1991-04-08 1992-12-22 Kabushiki Kaisha Delta Tool chuck
WO2008001761A1 (en) 2006-06-29 2008-01-03 Toyota Jidosha Kabushiki Kaisha Vehicle-mounted device controlling device and vehicle-mounted device setting method using the same
US9016699B2 (en) 2009-04-30 2015-04-28 Yukiwa Seiko Kabushiki Kaisha Chuck device

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0647606A (en) * 1991-09-12 1994-02-22 Jacobs Japan Inc Tool chuck
DE4411523A1 (en) * 1994-04-02 1995-10-05 Roehm Guenter H Drilling device from a drill and a drill chuck
DE19606795C2 (en) * 1996-02-23 1998-01-22 Metabowerke Kg Drill chuck
US6702090B2 (en) 2001-03-14 2004-03-09 Milwaukee Electric Tool Corporation Power tool and spindle lock system
US7063201B2 (en) 2001-11-27 2006-06-20 Milwaukee Electric Tool Corporation Power tool and spindle lock system
EP2913130A1 (en) * 2014-02-28 2015-09-02 MTH GbR Markus und Thomas Hiestand Clamping device for machine tools

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5172923A (en) * 1991-04-08 1992-12-22 Kabushiki Kaisha Delta Tool chuck
WO2008001761A1 (en) 2006-06-29 2008-01-03 Toyota Jidosha Kabushiki Kaisha Vehicle-mounted device controlling device and vehicle-mounted device setting method using the same
EP2033821A1 (en) * 2006-06-29 2009-03-11 Toyota Jidosha Kabushiki Kaisha Vehicle-mounted device controlling device and vehicle-mounted device setting method using the same
EP2033821A4 (en) * 2006-06-29 2010-05-05 Toyota Motor Co Ltd Vehicle-mounted device controlling device and vehicle-mounted device setting method using the same
US9016699B2 (en) 2009-04-30 2015-04-28 Yukiwa Seiko Kabushiki Kaisha Chuck device
US9539648B2 (en) 2009-04-30 2017-01-10 Yukiwa Seiko Kabushiki Kaisha Chuck device

Also Published As

Publication number Publication date
GB9013457D0 (en) 1990-08-08
GB2236968B (en) 1993-01-06
GB2236968A (en) 1991-04-24
JPH0829441B2 (en) 1996-03-27

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