EP0755754B1 - Schraubgerät - Google Patents
Schraubgerät Download PDFInfo
- Publication number
- EP0755754B1 EP0755754B1 EP96810361A EP96810361A EP0755754B1 EP 0755754 B1 EP0755754 B1 EP 0755754B1 EP 96810361 A EP96810361 A EP 96810361A EP 96810361 A EP96810361 A EP 96810361A EP 0755754 B1 EP0755754 B1 EP 0755754B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spindle
- drive pinion
- coupling element
- spring
- ball
- 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
Links
- 230000008878 coupling Effects 0.000 claims description 33
- 238000010168 coupling process Methods 0.000 claims description 33
- 238000005859 coupling reaction Methods 0.000 claims description 33
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/0064—Means for adjusting screwing depth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/141—Mechanical overload release couplings
Definitions
- the invention relates to a handheld device, such as a screwdriver, with a housing, one in the housing arranged motor, an axially fixed drive pinion driven by the motor, one in Housing mounted axially against the force of a spring against the drive pinion displaceable spindle and a coupling element between the drive pinion and the Spindle, wherein the coupling element by the axial displacement of the spindle in one first axial direction against the force of the spring with the drive pinion in the direction of rotation is detachable and limited axially displaceable and limited relative to the spindle is rotatable that when the drive pinion is rotated, the drive pinion coupled coupling element against the action of a restoring force relative to the spindle is rotated to a limited extent, the relative rotation being the limited axial displacement of the Coupling element in the first axial direction.
- Electrically powered screws are used to screw in the surface Screwdrivers used with a disconnect coupling that is between a spindle and a Drive pinion is arranged.
- the overload clutch allows after reaching the an automatic, noise and wear-free uncoupling the spindle from the drive pinion.
- a screwdriver with a coupling is known, the one of a motor-driven first coupling part, one in the housing of the screwing device rotatably mounted, axially displaceable, second coupling part and one in the circumferential direction limited rotatable and axially displaceable against the force of a spring third Has coupling part.
- the first coupling part is formed by a drive pinion with in Setting direction or cam bodies projecting in a second direction.
- the second Coupling part is formed by a spindle with opposite to the setting direction or in a first direction protruding cam bodies and the third Coupling part is formed by a coupling element, which is on both faces Cam bodies is provided.
- the spindle When pressing the screwdriver, the spindle is placed with the coupling element in between axially offset against the force of the spring, so that all cam bodies are form-fitting interlock.
- the coupling element When transmitting torque from the drive pinion on the spindle, the coupling element is rotated relative to the spindle and axially offset. This position of the coupling element relative to the spindle remains until the Spindle is moved in the setting direction after the insertion process until the positive connection between the cam bodies of the drive pinion and the Coupling element is lifted.
- DE-A-3 818 924 discloses a power-operated screwing tool with a housing, one in the housing, opposite the housing against the setting direction against the force of a spring axially displaceable spindle, one with a motor cooperating drive pinion and a coupling element between the Drive pinion and the spindle, the coupling element due to the axial displacement the spindle can be coupled against the setting direction with the drive pinion in the direction of rotation and can be axially displaced and rotated to a limited extent relative to the spindle, that when the drive pinion is rotated, that which is coupled to the drive pinion Coupling element limited against the action of a restoring force relative to the spindle is rotated, the relative rotation the limited axial displacement of the Coupling element causes against the setting direction.
- the invention has for its object to provide a clutch for a handheld device, the is economical to manufacture and is lightweight and lightweight Excellent wear.
- the task in the handheld device mentioned at the beginning solved in that the coupling element Is a ball that interacts with the stop surfaces of the spindle and through the axial Displacement of the spindle in the first axial direction with stop faces of the Drive pinion can be brought into engagement.
- the inventive design of the coupling element enables an economical Manufacture of the handheld device because the ball is a commercially available one Item that can be bought and that interact with the ball Stop surfaces can be attached directly to the spindle and the drive pinion. Another advantage is the small size of the coupling element and its low weight, which has a positive effect on the total weight of the handheld device.
- the stop surface of the drive pinion is expediently used by at least one parallel to the longitudinal extension of the spindle on an inner recess Circumferential surface of the drive pinion is formed. Because of this special arrangement of the Stop surfaces inside the drive pinion can change the axial length of the drive pinion and thus the overall length of the handheld device can be kept small.
- the stop surface of the spindle is preferably of an outer circumferential surface the spindle arranged groove is formed, at least in the circumferential direction measured extension of the groove the corresponding extension of the ball Coupling element exceeds. Stop surfaces in the form of a groove have the The advantage is that they can be manufactured economically and do not protrude beyond the outer contour of the spindle. Due to the special extension of the groove, the spindle is opposite the Drive pinion can be rotated to a limited extent in the engaged state.
- the edge advantageously runs to the respective two circumferential sides Ends of the groove inclined against the setting direction.
- the spring is expedient arranged between the coupling element designed as a ball and the drive pinion.
- the spring is arranged between turned parts.
- a malfunction the spring is given when the spring is between a rotating part and a part is arranged rotatably with respect to the housing.
- the friction force creates torsional loads that act on the spring and adversely affect the function.
- the screwing device shown in FIGS. 1 and 2 has a housing 1 and a handle 11 Actuator switch 12, an adjustable depth stop 13 and one against the force a spring 4 axially displaceable spindle 5.
- FIG. 2 shows, in the housing 1 there is a motor 2, a motor 2 driven Drive pinion 3, a coupling element 6 in the form of a ball and the axially displaceable Spindle 5 arranged. Between the ball and the drive pinion 3 is the spring 4 and a on the ball, arranged on the spindle 5, in the longitudinal direction of the spindle 5 limited displaceable ring 10 arranged.
- the groove 8 On an outer peripheral surface of the spindle 5 there is a groove 8, the in Extent measured circumference exceeds the corresponding extent of the ball.
- the groove 8 has an abutment surface pointing against the setting direction an edge 9 which is inclined to a plane perpendicular to the spindle axis runs.
- the edge 9 runs inclined to the respective two peripheral ends of the Slot 8.
- one of the grooves 8 is essentially opposite recess 7 arranged, which is inclined to the longitudinal extension of the spindle 5 runs.
- the recess 7 has two approaching each other against the setting direction Stop edges 16 on.
- the groove 8 and the recess 7 receive the ball and the groove 8 and / or the recess 7 of the drive pinion 3 are designed such that an axial and a circumferential movement of the spindle 5 relative to the drive pinion 3 by one predetermined axial distance (S) is possible.
- the recess 7 has a radial direction constant depth.
- the end face of the spindle 5 on the setting direction is included can be connected to a bit 14. Via the screw 15 attached to bit 14 the spindle 5 is pressed together by pressing the screwdriver against the underground U. moved with the ball against the spring 4. The ball gets into the recess 7 of the drive pinion 3, so that a non-rotatable, positive connection arises between the spindle 5 and the drive pinion 3. The spring 4 is now under tension. When the screwdriver is actuated, the spindle 5 is set in rotation.
- the displacement of the ball in the groove 8 of the spindle 5 results in a displacement of the Spindle 5 with respect to the drive pinion in the circumferential direction and in the setting direction.
- the screw 15 is screwed in while tracking the screwing device until the depth stop 13 rests on the underground U.
- the spring 4 guides the spindle 5 until the screwing depth set via the depth stop 13 is reached and the ball no longer engages in the recess 7, so that the non-rotatable, positive Connection between the spindle 5 and the drive pinion 3 is interrupted.
- the spring 4 moves one between the ball and the spring 4 arranged, on the spindle 5 axially displaceable ring 10 in the starting position.
- the spring 4 sets the spindle 5 in the starting position.
Description
- Fig. 1
- ein erfindungsgemässes, schematisch dargestelltes Handgerät,
- Fig. 2
- ein Teil des Handgerätes gemäss Fig.1, in vergrösserter und geschnittener Darstellung.
Claims (7)
- Handgerät, wie Schraubgerät, mit einem Gehäuse (1), einem im Gehäuse (1) angeordneten Motor (2), einem vom Motor (2) angetriebenen, axial festen Antriebsritzel (3), einer im Gehäuse (1) gelagerten, gegen die Kraft einer Feder (4) gegenüber dem Antriebsritzel (3) axial versetzbaren Spindel (5) und einem Kupplungselement (6) zwischen dem Antriebsritzel (3) und der Spindel (5), wobei das Kupplungselement (6) durch das axiale Versetzen der Spindel (5) in einer ersten axialen Richtung gegen die Kraft der Feder (4) mit dem Antriebsritzel (3) in Drehrichtung kuppelbar ist und gegenüber der Spindel (5) derart begrenzt axial verschiebbar und begrenzt verdrehbar ist, dass bei einer Verdrehung des Antriebsritzels (3) das mit dem Antriebsritzel (3) gekuppelte Kupplungselement (6) gegen die Wirkung einer Rückstellkraft relativ zur Spindel (5) begrenzt verdreht wird, wobei die relative Drehung die begrenzte axiale Verschiebung des Kupplungselementes (6) in der ersten axialen Richtung hervorruft, dadurch gekennzeichnet, dass das Kupplungselement (6) eine Kugel ist, die mit Anschlagflächen der Spindel (5) zusammenwirkt und durch die axiale Versetzung der Spindel (5) in der ersten axialen Richtung mit Anschlagflächen des Antriebsritzels (3) in Eingriff bringbar ist.
- Gerät nach Anspruch 1, dadurch gekennzeichnet, dass die Anschlagflächen des Antriebsritzels (3) von wenigstens einer parallel zur Längserstreckung der Spindel (5) verlaufenden Vertiefung (7) an einer inneren Umfangsfläche des Antriebsritzels (3) gebildet sind.
- Gerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Anschlagflächen der Spindel (5) von einer an einer äusseren Umfangsfläche der Spindel (5) angeordneten Nut (8) gebildet werden, wobei zumindest die in Umfangsrichtung gemessene Erstreckung der Nut (8) die entsprechende Erstreckung der Kugel übersteigt.
- Gerät nach Anspruch 3, dadurch gekennzeichnet, dass die entgegen der Setzrichtung weisende Arschlagfläche der Spindel (5) von einer Kante (9) gebildet wird, die geneigt zu einer senkrecht zur Spindelachse stehenden Ebene verläuft.
- Gerät nach Anspruch 4, dadurch gekennzeichnet, dass die Kante (9) zu den jeweiligen beiden umfangsseitigen Enden der Nut (8) entgegen der Setzrichtung geneigt verläuft.
- Gerät nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Feder (4) zwischen der Kugel und dem Antriebsritzel (3) angeordnet ist.
- Gerät nach Anspruch 6, dadurch gekennzeichnet, dass zwischen der Kugel und der Feder (4) ein auf der Spindel (5) angeordneter, in Längsrichtung der Spindel (5) begrenzt versetzbarer Ring (10) angeordnet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19527193 | 1995-07-26 | ||
DE19527193A DE19527193A1 (de) | 1995-07-26 | 1995-07-26 | Schraubgerät |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0755754A1 EP0755754A1 (de) | 1997-01-29 |
EP0755754B1 true EP0755754B1 (de) | 1998-11-11 |
Family
ID=7767768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96810361A Expired - Lifetime EP0755754B1 (de) | 1995-07-26 | 1996-06-04 | Schraubgerät |
Country Status (6)
Country | Link |
---|---|
US (1) | US5709275A (de) |
EP (1) | EP0755754B1 (de) |
JP (1) | JP3984312B2 (de) |
KR (1) | KR100384986B1 (de) |
CN (1) | CN1055039C (de) |
DE (2) | DE19527193A1 (de) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE59801010D1 (de) * | 1998-08-28 | 2001-08-16 | Ceka Elektrowerkzeuge Ag & Co | Automatische Spindelarretierung |
US6758116B2 (en) | 2001-06-28 | 2004-07-06 | Porter-Cable/Delta | Depth adjusting system for a screw gun |
US7047848B2 (en) * | 2001-06-29 | 2006-05-23 | Portar-Cable/Delta | Manufacture of steel components for screw gun clutches |
US6665923B2 (en) | 2001-06-29 | 2003-12-23 | Porter-Cable/Delta | Clutch for a screw gun and utilizing method |
US7811260B2 (en) | 2002-05-31 | 2010-10-12 | Vidacare Corporation | Apparatus and method to inject fluids into bone marrow and other target sites |
US8668698B2 (en) | 2002-05-31 | 2014-03-11 | Vidacare Corporation | Assembly for coupling powered driver with intraosseous device |
US11337728B2 (en) | 2002-05-31 | 2022-05-24 | Teleflex Life Sciences Limited | Powered drivers, intraosseous devices and methods to access bone marrow |
CA2485904C (en) | 2002-05-31 | 2013-05-21 | Vidacare Corporation | Apparatus and method to access the bone marrow |
US10973545B2 (en) | 2002-05-31 | 2021-04-13 | Teleflex Life Sciences Limited | Powered drivers, intraosseous devices and methods to access bone marrow |
US8641715B2 (en) | 2002-05-31 | 2014-02-04 | Vidacare Corporation | Manual intraosseous device |
US9504477B2 (en) | 2003-05-30 | 2016-11-29 | Vidacare LLC | Powered driver |
US8944069B2 (en) | 2006-09-12 | 2015-02-03 | Vidacare Corporation | Assemblies for coupling intraosseous (IO) devices to powered drivers |
ES2805203T3 (es) | 2006-09-12 | 2021-02-11 | Teleflex Medical Devices S A R L | Aparato para biopsia y aspiración de médula ósea |
CN101683733B (zh) * | 2008-09-28 | 2012-09-26 | 车王电子股份有限公司 | 电动工具的离合装置 |
CN102674179B (zh) * | 2012-05-21 | 2015-04-15 | 安徽省宿州市龙华机械制造有限公司 | 一种无极绳绞车双速齿轮箱防行星轮架轴向窜动的装置 |
WO2015123660A1 (en) * | 2014-02-17 | 2015-08-20 | Vidacare LLC | Powered driver actuated by force on driveshaft and related kits, components, and methods |
TWI606897B (zh) * | 2015-02-16 | 2017-12-01 | 優鋼機械股份有限公司 | 扭力起子 |
JP2019147223A (ja) * | 2018-02-27 | 2019-09-05 | 株式会社マキタ | スクリュードライバ |
JP2019155533A (ja) | 2018-03-13 | 2019-09-19 | 株式会社マキタ | ネジ締め工具 |
CN108466216B (zh) * | 2018-03-28 | 2019-11-05 | 徐州鼎力模具有限公司 | 一种基于齿轮传动的具有校正功能的电动螺丝刀 |
CN108527226A (zh) * | 2018-04-13 | 2018-09-14 | 宁波得晴电器科技有限公司 | 一种家电生产设备 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2683511A (en) * | 1949-09-28 | 1954-07-13 | American Screw Co | Torque thrust control device |
DE2840140A1 (de) * | 1978-09-15 | 1980-03-27 | Schmid & Wezel | Druckluftschrauber mit abschaltumgehung |
DE3510605A1 (de) * | 1985-03-23 | 1986-10-02 | C. & E. Fein Gmbh & Co, 7000 Stuttgart | Kupplung fuer kraftgetriebene schraubwerkzeuge |
DE3818924A1 (de) * | 1987-12-08 | 1989-06-29 | Makita Electric Works Ltd | Kraftgetriebenes schraubwerkzeug |
US5156244A (en) * | 1990-08-31 | 1992-10-20 | The Aro Corporation | Torque sensing automatic shut-off and reset clutch for screwdrivers, nutsetters and the like |
US5054588A (en) * | 1990-08-31 | 1991-10-08 | The Aro Corporation | Torque sensing automatic shut-off and reset clutch for screwdrivers, nutsetters and the like |
JPH0825146B2 (ja) * | 1990-09-19 | 1996-03-13 | 株式会社マキタ | 電動スクリュードライバにおけるクラッチ装置 |
EP0532289A1 (de) * | 1991-09-10 | 1993-03-17 | Mhh Engineering Co Ltd | Vorrichtung zum Ausüben eines Drehmoments auf einem Befestigungsmittel |
US5372206A (en) * | 1992-10-01 | 1994-12-13 | Makita Corporation | Tightening tool |
CN2174300Y (zh) * | 1993-09-02 | 1994-08-17 | 辛富荣 | 电动起子的离合器 |
-
1995
- 1995-07-26 DE DE19527193A patent/DE19527193A1/de not_active Withdrawn
-
1996
- 1996-06-04 DE DE59600801T patent/DE59600801D1/de not_active Expired - Lifetime
- 1996-06-04 EP EP96810361A patent/EP0755754B1/de not_active Expired - Lifetime
- 1996-06-18 KR KR1019960021940A patent/KR100384986B1/ko not_active IP Right Cessation
- 1996-07-22 CN CN96109930A patent/CN1055039C/zh not_active Expired - Lifetime
- 1996-07-24 JP JP19469896A patent/JP3984312B2/ja not_active Expired - Fee Related
- 1996-09-30 US US08/690,171 patent/US5709275A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CN1055039C (zh) | 2000-08-02 |
JPH0938870A (ja) | 1997-02-10 |
CN1148531A (zh) | 1997-04-30 |
JP3984312B2 (ja) | 2007-10-03 |
KR970005534A (ko) | 1997-02-19 |
US5709275A (en) | 1998-01-20 |
DE19527193A1 (de) | 1997-01-30 |
EP0755754A1 (de) | 1997-01-29 |
DE59600801D1 (de) | 1998-12-17 |
KR100384986B1 (ko) | 2003-08-21 |
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