WO2013136668A1 - 動力工具 - Google Patents
動力工具 Download PDFInfo
- Publication number
- WO2013136668A1 WO2013136668A1 PCT/JP2013/000901 JP2013000901W WO2013136668A1 WO 2013136668 A1 WO2013136668 A1 WO 2013136668A1 JP 2013000901 W JP2013000901 W JP 2013000901W WO 2013136668 A1 WO2013136668 A1 WO 2013136668A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- torque
- clutch
- power tool
- adjustment member
- lid
- Prior art date
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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
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- 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
-
- 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
- B25B23/147—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F3/00—Associations of tools for different working operations with one portable power-drive means; Adapters therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
Definitions
- the present invention relates to a power tool having a torque adjustment function.
- a power tool including a torque adjusting unit that adjusts a tightening torque when tightening a screw or the like is known.
- the torque adjustment unit is operated by rotating the torque adjustment unit using a dedicated torque adjustment device, and the torque can be adjusted.
- An object of the present invention is to provide a power tool that can more reliably manage torque at a constant level.
- a power tool adjusts a driving source, a driving transmission mechanism that transmits a driving force from the driving source, and a tightening torque when the driving force is transmitted to an output unit.
- a main body housing for accommodating a possible torque adjusting unit, the driving source, the drive transmission mechanism, and the torque adjusting unit, wherein the main body housing has an opening for exposing the output unit.
- a torque clutch including a clutch spring and a clutch plate against which the first end of the clutch spring comes into contact, and increases the load torque to the output unit.
- a torque clutch configured to cut off power transmission to the output portion by pushing up the clutch plate against the clutch spring and a second clutch spring in the torque clutch.
- An adjustment member provided at an end, and the torque adjustment unit adjusts a spring force by which the clutch spring presses the clutch plate by the movement of the adjustment member, thereby tightening torque when the power transmission of the torque clutch is interrupted
- the adjustment member is detachably attached to the adjustment member and engages with a clutch handle for rotating the adjustment member, and the engagement portion And a lid part attached to the opening so as to cover.
- the power tool includes the clutch handle that rotates the adjustment member, and the lid portion is formed along a rotation direction of the lid portion and engages with the clutch handle. It is preferable that the lid portion is configured to be detachable from the main body housing by engaging the clutch handle with the lid portion side engaging portion.
- the lid portion includes a lid portion side engaging portion that is formed along a rotation direction of the lid portion and engages with the clutch handle, and the lid portion is associated with the lid portion side engagement. It is preferable that the clutch handle is engaged with a joint portion so that the lid portion can be detached from the main body housing.
- the said engaging part contains the some 1st engaging element formed continuously along the rotation direction of the said adjustment member, and the said cover part side engaging part is the said cover part.
- the first engagement element includes a plurality of second engagement elements formed continuously along the rotation direction, and the shape of the first engagement element is different from the shape of the second engagement element.
- the first engagement element has a curved shape
- the second engagement element has a cylindrical shape
- the first engagement element has a cylindrical shape
- the second engagement element has a curved shape
- FIG. 1 It is a perspective view of the power tool in an embodiment. It is a perspective view of the power tool and the tool for torque adjustment in an embodiment. It is sectional drawing of the gear part in embodiment. It is sectional drawing of the gear part in embodiment. It is a top view of the adjustment member in an embodiment.
- (A) (b) is a figure of the tool for torque adjustment. It is a side view of the power tool and the tool for torque adjustment of another example. It is a side view of the power tool and the tool for torque adjustment of another example. It is a top view of the adjustment member of another example.
- the power tool 10 of the present embodiment includes a tool body 11 and a battery pack 12 that can be attached to and detached from the tool body 11.
- the tool main body 11 includes a substantially T-shaped main body housing 15 including a substantially cylindrical body portion 13 and a grip portion 14 that extends downward from a midway position in the longitudinal direction of the body portion 13. Including.
- a body 16 of the main body housing 15 accommodates a motor 16 that functions as a drive source at a rear position in the longitudinal direction, as shown in FIGS.
- the grip 14 is provided with a trigger switch 17 that functions as an operation instruction unit for an operator to instruct operation / stop of the power tool 10.
- the trigger switch 17 is operated when the user adjusts the rotation speed of the motor 16.
- the main body housing 15 accommodates a substantially cylindrical gear case 18.
- the gear case 18 houses a three-stage planetary gear mechanism 20 that is drivably connected to the motor 16 and decelerates the output of the motor 16, and a torque clutch 40 for adjusting the tightening torque.
- the rotating shaft 16a of the motor 16 is provided with a sun gear 21 that rotates integrally with the rotating shaft 16a.
- the rotating shaft 16 a is fitted with the large diameter portion 23 a of the first transmission gear 23.
- the large diameter portion 23a of the first transmission gear 23 is fitted with the support shaft 23b.
- a first planetary gear 24 supported by a support shaft 23 b is meshed with the sun gear 21 between a ring gear 22 fixed to the inner peripheral surface of the gear case 18. Therefore, when the rotating shaft 16a rotates, the first planetary gear 24 rotates around the support shaft 23b and rotates around the sun gear 21 that rotates integrally with the rotating shaft 16a.
- the second planetary gear 25 is engaged with the ring gear 22 in the small diameter gear portion 23 c of the first transmission gear 23.
- the second planetary gear 25 is supported by a support shaft 26b that is fitted to the large diameter portion 26a of the second transmission gear 26 that is arranged coaxially with the rotation shaft 16a.
- the rotating shaft 16 a rotates, the second planetary gear 25 rotates around the support shaft 26 b and rotates around the small-diameter gear portion 23 c of the first transmission gear 23.
- the second transmission gear 26 includes a small-diameter gear portion 26 c like the first transmission gear 23.
- a third planetary gear 28 is engaged with the small-diameter gear portion 26c between a ring gear 27 provided in the gear case 18 so as to be free to rotate.
- the third planetary gear 28 is supported by a support shaft 29a fitted to a third transmission gear 29 arranged coaxially with the rotation shaft 16a. When the rotating shaft 16a rotates, the third planetary gear 28 rotates around the support shaft 29a and rotates around the small-diameter gear portion 26c of the second transmission gear 26.
- the third transmission gear 29 is connected to the output shaft 31 via a lock plate 30 that constitutes a lock mechanism. Note that a description of a lock mechanism that performs auto-locking for hand-tightening work is omitted.
- the torque clutch 40 for adjusting the tightening torque uses a ring gear 27 that can rotate freely in the third stage planetary mechanism.
- the torque clutch 40 has a projection 27b formed on the end surface 27a on the output shaft 31 side in the axial direction of the ring gear 27, a ball 41 engaged with the projection 27b in the rotational direction, and a relatively small diameter of the gear case 18.
- the adjusting member 42 is disposed on the outer peripheral surface of the tip end portion, and the clutch spring 43 is elastically connected to the ball 41.
- the adjustment member 42 is elastically connected to one end of the clutch spring 43.
- the ball 41 is elastically connected to the other end of the clutch spring 43 via a click plate 44 and a clutch plate 45.
- the annular clutch plate 45 positioned between the click plate 44 and the ball 41 is attached to the gear case 18 so as not to rotate and to move along the axial direction.
- the adjusting member 42 is formed in a disk shape.
- the central portion of the adjustment member 42 is formed so as to penetrate along the axial direction.
- a female screw portion 42 b that is screwed with the male screw portion 18 a formed on the outer peripheral surface of the small diameter portion of the gear case 18 is formed.
- a protrusion 42d that protrudes outward in the radial direction of the adjustment member 42 is formed.
- the protrusion 42d is formed to slidably engage with a longitudinal groove portion 15a formed along the axial direction on the inner surface of the main body housing 15. For this reason, the adjustment member 42 is screwed or retreated with respect to the gear case 18 along the axial (thrust) direction.
- the output of the motor 16 includes a first stage and a second stage planetary mechanism, and a third stage planetary gear provided with a ring gear 27 whose rotation is prevented by the ball 41 being locked by the bias of the clutch spring 43. It is decelerated by the mechanism and transmitted to the output shaft 31.
- the load torque applied to the ring gear 27 is higher than the engagement force between the ball 41 provided by the clutch spring 43 and the protrusion 27 b of the ring gear 27, the ring gear 27 resists the clutch spring 43 and the ball. Extrude 41 to start idling. As a result, the torque clutch composed of the ring gear 27 and the ball 41 slips and the tightening torque is limited.
- three engaging holes 42f are formed at substantially equal intervals in the rotational direction on the front surface 42e in the axial direction on the output shaft 31 side of the adjusting member 42 of the present embodiment.
- the engagement hole 42f is formed in a curved shape when viewed in the axial direction.
- an engagement protrusion TC1 is formed at one end of a torque adjusting device (clutch handle) TC separate from the power tool 10.
- a torque adjusting device clutch handle
- the engagement hole 42f is rotated. Accordingly, as described above, the adjustment member 42 is rotated and moved along the axial direction, whereby the pressing force of the clutch spring 43 is changed, and the engagement force between the ball 41 and the ring gear 27 is changed. Tightening torque is adjusted.
- a lid that closes the opening 13 a formed at one end in the longitudinal direction of the body portion 13 of the main body housing 15 so that the user cannot easily touch the adjustment member 42.
- a portion 60 is provided.
- the lid 60 is formed in a bottomed cylindrical shape.
- An insertion hole 62 through which the output shaft 31 is inserted is formed at the center position of the bottom 61 of the lid 60.
- Three cylindrical fitting holes 63 extending from the bottom 61 toward the opening of the lid 60 are formed around the insertion hole 62 in the lid 60.
- a male screw portion 65 is formed on the outer peripheral surface 64 of the lid portion 60.
- a female screw part 13 b is formed on the inner periphery of the opening part 13 a of the body part 13. The lid 60 is attached to the opening 13a so that the male thread 65 and the female thread 13b are screwed together and the lid 60 closes the opening 13a.
- the fitting hole 63 of the lid part 60 is fitted with three cylindrical protrusions TC2 formed at the other end of the torque adjusting device TC.
- the cover part 60 is comprised by the torque adjustment instrument TC so that rotation is possible. That is, the lid 60 is configured to be detachable from the opening 13a.
- a lid 60 is attached to the opening 13 a of the body 13 of the main body housing 15. For this reason, the torque adjustment by the torque adjustment instrument TC cannot be performed by the lid portion 60.
- the user fits (engages) the cylindrical protrusion TC2 formed on the torque adjusting device TC in the fitting hole 63 of the lid 60, and the torque adjusting device TC is in the center of the output shaft 31 in this state.
- Rotate with The lid 60 is rotated and gradually exposed to the outside, and is finally removed from the opening 13a.
- the engagement protrusion TC1 of the torque adjusting device TC is inserted through the opening 13a in the axial direction, and the engagement protrusion TC1 is fitted into the engagement hole 42f of the adjustment member 42 in the body 13 (main body housing 15) ( Engagement).
- the torque adjusting device TC is rotated about the axis as described above, the adjusting member 42 is rotated and the adjusting member 42 is moved along the axial direction, and the pressing force of the clutch spring 43 is changed.
- the engagement force with the gear 27 changes to adjust the tightening torque.
- the adjustment member 42 is detachably attached to the adjustment member 42, and an engagement hole 42f that functions as an engagement portion that engages with a torque adjustment device TC that functions as a clutch handle that rotates the adjustment member 42.
- the lid portion 60 covers the opening 13a and covers the engagement hole 42f.
- the lid portion 60 includes a torque adjustment device TC that rotates the adjustment member 42, and a fitting hole 63 that functions as a lid portion side engaging portion that engages in the rotation direction of the lid portion 60.
- the lid 60 is configured to be able to remove the lid 60 from the main body housing 15 by engaging the torque adjusting device TC with the fitting hole 63. For this reason, since the lid 60 can be removed from the main body housing 15 by the torque adjusting device TC, a jig other than the torque adjusting device TC is not required when removing the lid 60 from the main body housing 15 during torque adjustment. Thereby, the convenience at the time of torque adjustment and the ease of torque adjustment can be improved.
- the outer surface 70 of the body portion 13 of the main body housing 15 is provided with a symbol portion 71 (numbers 1 to 9 are shown) indicating the number of torque adjustment steps, and the outer surface of the torque adjusting device TC.
- a mark portion 73 (illustrated by a white triangle in the figure) corresponding to the symbol portion 71 is provided at 72. Further, as shown in FIG.
- a symbol portion 71 indicating the number of torque adjustment steps is provided on the outer surface 72 of the torque adjusting device TC, and a mark portion corresponding to the symbol portion 71 is provided on the outer surface 70 of the trunk portion 13 of the main body housing 15. 73 is provided.
- the configuration of the adjustment member 42 may be changed as follows. That is, as shown in FIG. 9, the outer peripheral surface 42 c of the adjustment member 42 is formed such that the protrusion 80 and the concave portion 81 are continuous along the circumferential direction, and the inner peripheral surface 13 c of the trunk portion 13 of the main body housing 15. It is made to engage with the projecting spring portion 86 of the leaf spring 85 provided on the plate. By setting it as such a structure, it is suppressed that the torque once set is changed by the impact etc. which generate
- the present invention is applied as a so-called rechargeable power tool including the battery pack 12, but may be applied to a power tool using an AC power source as a power source.
- the engagement hole 42f is formed in a curved shape when viewed in the axial direction, and the fitting hole 63 is formed in a cylindrical shape, but the shapes of the engaging hole 42f and the fitting hole 63 are If it can engage with engagement protrusion TC1 of clutch handle TC, it will not be restricted in particular.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Drilling And Boring (AREA)
Abstract
Description
Claims (6)
- 動力工具であって、
駆動源と、
前記駆動源からの駆動力を伝達する駆動伝達機構と、
前記駆動力が出力部に伝達される際の締め付けトルクを調整可能なトルク調整部と、
前記駆動源と、前記駆動伝達機構と、前記トルク調整部とを収容する本体ハウジングであって、前記本体ハウジングは、前記出力部を露出させる開口部を有する、前記本体ハウジングとを備え、
前記トルク調整部は、
クラッチばねと、該クラッチばねの第1の端部が当接されるクラッチ板とを含むトルククラッチであって、前記出力部への負荷トルクの増大に伴ってクラッチ板をクラッチばねに抗して押し上げることで出力部への動力伝達を遮断するように構成される前記トルククラッチと、
該トルククラッチにおける前記クラッチばねの第2の端部に設けられる調整部材とを含み、
前記トルク調整部は、該調整部材の移動によりクラッチばねがクラッチ板を押圧するばね力を調整して、トルククラッチの動力伝達を遮断する際の締め付けトルクの大きさを変更するように構成され、
前記調整部材は、該調整部材と着脱自在に取り付けられて該調整部材を回動させるためのクラッチハンドルと係合する係合部と、前記係合部を覆うように前記開口部に取り付けられた蓋部とを含む、動力工具。 - 請求項1に記載の動力工具において、
前記動力工具は、前記調整部材を回動させる前記クラッチハンドルを備え、
前記蓋部は、前記蓋部の回動方向に沿って形成され、前記クラッチハンドルと係合する蓋部側係合部を含み、
前記蓋部は、前記蓋部側係合部に前記クラッチハンドルを係合させて前記蓋部を前記本体ハウジングから取り外し可能に構成される、動力工具。 - 請求項1に記載の動力工具において、
前記蓋部は、前記蓋部の回動方向に沿って形成され、前記クラッチハンドルと係合する蓋部側係合部を含み、
前記蓋部は、前記蓋部側係合部に前記クラッチハンドルを係合させて前記蓋部を前記本体ハウジングから取り外し可能に構成される、動力工具。 - 請求項2又は3に記載の動力工具において、
前記係合部は、前記調整部材の回動方向に沿って連続して形成された複数の第1係合要素を含み、
前記蓋部側係合部は、前記蓋部の回動方向に沿って連続して形成された複数の第2係合要素を含み、
前記第1係合要素の形状は、前記第2係合要素の形状と異なる、動力工具。 - 請求項4に記載の動力工具において、
前記第1係合要素は、湾曲形状を有し、
前記第2係合要素は、円筒状を有する、動力工具。 - 請求項4に記載の動力工具において、
前記第1係合要素は、円筒状を有し、
前記第2係合要素は、湾曲形状を有する、動力工具。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/384,247 US10232501B2 (en) | 2012-03-13 | 2013-02-19 | Power tool |
KR1020147026577A KR101623010B1 (ko) | 2012-03-13 | 2013-02-19 | 동력 공구 |
CN201380013428.3A CN104169048B (zh) | 2012-03-13 | 2013-02-19 | 动力工具 |
EP13762034.0A EP2826597B1 (en) | 2012-03-13 | 2013-02-19 | Power tool |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012055964A JP5895159B2 (ja) | 2012-03-13 | 2012-03-13 | 動力工具 |
JP2012-055964 | 2012-03-13 |
Publications (1)
Publication Number | Publication Date |
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WO2013136668A1 true WO2013136668A1 (ja) | 2013-09-19 |
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ID=49160620
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2013/000901 WO2013136668A1 (ja) | 2012-03-13 | 2013-02-19 | 動力工具 |
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US (1) | US10232501B2 (ja) |
EP (1) | EP2826597B1 (ja) |
JP (1) | JP5895159B2 (ja) |
KR (1) | KR101623010B1 (ja) |
CN (1) | CN104169048B (ja) |
WO (1) | WO2013136668A1 (ja) |
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US10173310B2 (en) * | 2015-02-06 | 2019-01-08 | Milwaukee Electric Tool Corporation | Gas spring-powered fastener driver |
KR20220080841A (ko) * | 2020-12-08 | 2022-06-15 | (주)볼팅마스타 | 토크렌치 |
USD1014212S1 (en) * | 2021-06-21 | 2024-02-13 | Shanghai Hoto Technology Co., Ltd. | Electric drill |
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2013
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- 2013-02-19 WO PCT/JP2013/000901 patent/WO2013136668A1/ja active Application Filing
- 2013-02-19 CN CN201380013428.3A patent/CN104169048B/zh active Active
- 2013-02-19 EP EP13762034.0A patent/EP2826597B1/en active Active
- 2013-02-19 KR KR1020147026577A patent/KR101623010B1/ko active IP Right Grant
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Also Published As
Publication number | Publication date |
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JP2013188823A (ja) | 2013-09-26 |
CN104169048A (zh) | 2014-11-26 |
EP2826597B1 (en) | 2016-10-19 |
US20150047867A1 (en) | 2015-02-19 |
EP2826597A4 (en) | 2015-10-21 |
KR20140127898A (ko) | 2014-11-04 |
US10232501B2 (en) | 2019-03-19 |
KR101623010B1 (ko) | 2016-05-20 |
JP5895159B2 (ja) | 2016-03-30 |
CN104169048B (zh) | 2016-08-17 |
EP2826597A1 (en) | 2015-01-21 |
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