WO2007058149A1 - ハンマドリル - Google Patents
ハンマドリル Download PDFInfo
- Publication number
- WO2007058149A1 WO2007058149A1 PCT/JP2006/322587 JP2006322587W WO2007058149A1 WO 2007058149 A1 WO2007058149 A1 WO 2007058149A1 JP 2006322587 W JP2006322587 W JP 2006322587W WO 2007058149 A1 WO2007058149 A1 WO 2007058149A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- clutch
- sleeve
- intermediate shaft
- tool holding
- holding sleeve
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
- B25D16/006—Mode changers; Mechanisms connected thereto
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D11/00—Portable percussive tools with electromotor or other motor drive
- B25D11/06—Means for driving the impulse member
- B25D11/062—Means for driving the impulse member comprising a wobbling mechanism, swash plate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
- B25D2216/0007—Details of percussion or rotation modes
- B25D2216/0015—Tools having a percussion-only mode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
- B25D2216/0007—Details of percussion or rotation modes
- B25D2216/0023—Tools having a percussion-and-rotation mode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
- B25D2216/0007—Details of percussion or rotation modes
- B25D2216/0038—Tools having a rotation-only mode
Definitions
- the present invention relates to a hammer drill capable of switching an operation mode to a hammering mode, a rotation mode, and a rotation hammering mode.
- hammer drills select the operation mode of hammering, rotation, or hammering and rotation by rotating the operation lever, and perform hammering and rotation via a motor force hammering mechanism and a rotary drive mechanism for the tool provided at the tip. Can be transmitted simultaneously or independently.
- the operation mode is selected by a mode switching mechanism.
- the operation mode switching mechanism is implemented by providing a clutch in each of the striking mechanism and the rotary drive mechanism, and connecting or cutting off the rotational force of the motor to the striking mechanism or the rotary drive mechanism.
- an intermediate shaft that is operatively connected to the motor in the housing and a tool holding sleeve that holds the tip tool are arranged in parallel, and the rotary drive is performed by the striking mechanism and the tool holding sleeve via the intermediate shaft.
- two clutches are provided on the intermediate shaft, one of which transmits or cuts off the torque of the intermediate shaft to the striking mechanism, and the other clutch transmits or blocks the torque to the rotary drive mechanism. What is known to be configured to block.
- the second clutch is provided to be able to engage and disengage from a drive gear provided to the tool holding sleeve by moving in the axial direction of the intermediate shaft.
- the second clutch moves along the intermediate shaft in a direction in which the second clutch is piled away from the drive gear in a panel energizing direction in the striking-only mode, and in the rotation mode, Move back to engage. Therefore, when the operation mode is changed from the impact-only operation mode to the rotation operation mode, the engagement is disengaged, and the gear of the second clutch is moved by the panel bias and the engagement with the drive gear is restored. If the drive gear is rotating, it will be difficult to re-engage with the drive gear. Sudden transmission force is energized and the gear may be damaged.
- One or more embodiments of the present invention can ensure a smooth operation with no problem of gear meshing even when the operation mode is changed from the operation mode of only the impact to the operation mode of rotation.
- an intermediate shaft that is operatively connected to the motor and a tool holding sleeve that holds the tip tool are arranged in parallel in the housing, and the intermediate shaft is disposed on the intermediate shaft.
- a motion converting member for converting the rotary motion into a reciprocating motion and striking the tip tool is rotatably provided, a first clutch is provided between the intermediate shaft and the motion converting member, and the tool holding sleeve
- a clutch sleeve connected to the intermediate shaft via a rotation transmission member and a second clutch that rotates integrally with the tool holding sleeve and is movable along the longitudinal direction of the tool holding sleeve are disposed on the outer periphery.
- the second clutch is provided so as to be able to engage and disengage from the clutch sleeve.
- the intermediate shaft and the tool holding sleeve are arranged in parallel, the intermediate shaft and the tool holding sleeve are operatively connected via a gear, and the first clutch and tool are provided on the intermediate shaft side.
- the second clutch is arranged on the holding sleeve side, and the rotation transmission member and the clutch sleeve are interposed between the intermediate shaft and the second clutch, so that the rotation of the intermediate shaft is always transmitted to the clutch sleeve. There will be no problem of engagement in this part.
- the second clutch rotates integrally with the tool holding sleeve and is movable along the longitudinal direction of the tool holding sleeve, the second clutch and the tool holding sleeve are always engaged. Because it rotates, there is no problem of engagement.
- the housing is provided with a lock member that can be engaged with the second clutch separated from the clutch sleeve, and the lock member is biased in a direction to engage with the second clutch.
- FIG. 1 is a longitudinal sectional view of a main part of a hammer drill in a rotation / blow mode.
- FIG. 2 is a longitudinal sectional view of a main part of the hammer drill in a rotation mode.
- FIG. 3 is a longitudinal sectional view of a main part of the hammer drill in a hammering mode.
- FIG. 4 is a cross-sectional view taken along the line AA in FIG.
- FIG. 5A is a cross-sectional view taken along line BB in FIG.
- FIG. 5B is a cross-sectional view taken along the line CC in FIG. 5A.
- FIG. 6 is an explanatory view showing an engagement relationship between the lock bar and the second clutch.
- FIG. 7 is an overall view of a hammer drill showing a switching lever.
- FIG. 8 is a cross-sectional view taken along the line DD in FIG.
- FIG. 9 is a plan view showing the engagement relationship between the shift plate and the second clutch.
- FIG. 10 is a cross-sectional view taken along line EE in FIG.
- FIG. 1 is a longitudinal sectional view of a main part of a hammer drill.
- reference numeral 1 denotes a housing 1.
- a motor (not shown) is accommodated behind the housing 1 (on the right side in FIG. 1), and the output shaft 2 of the motor is supported by an inner housing la assembled in the housing 1, and the output shaft 2 Is meshed with the reduction gear 4 of the intermediate shaft 3 that is supported in parallel.
- a motion conversion member 5 having a spherical surface is rotatably mounted on the intermediate shaft 3.
- the motion conversion unit The spline 7b provided on the material 5 and the spline 8 of the first clutch 6 are arranged so as to be rotatable and movable in the axial direction, and the first clutch 6 is moved forward by the clutch spring 9 and is connected to the spline 7a of the intermediate shaft 3. It is energized in the direction of mating.
- a first gear 10 is provided at the front end of the intermediate shaft 3.
- a tool holding sleeve 11 is rotatably provided in the housing 1 in parallel with the intermediate shaft 3.
- a bottomed cylindrical piston 12 is slidably accommodated in the tool holding sleeve 11.
- the rear end of the piston 12 and the motion converting member 5 outside the intermediate shaft 3 are connected via a peristaltic shaft 16 having a reciprocating bearing 15.
- a ball 19 is engaged with a groove 17 on the inner periphery of the reciprocating bearing 15 and a groove 18 formed obliquely on the motion converting member 5.
- a first hammer 20 is slidably disposed in the piston 12, a second hammer 21 is disposed in front of the first hammer 20, and a drill bit is disposed in front of the second hammer 21.
- a tip tool 22 is arranged.
- the second hammer 21 and the tip tool 22 are fitted into the small diameter portion 1 la of the tool holding sleeve 11 so as to be slidable within a certain range!
- a ball 24 protruding from the through hole 29 of the small diameter portion is engaged with the key groove 23 formed in the base portion of the tip tool 22.
- the tip tool 22 rotates integrally with the tool holding sleeve 11 and can reciprocate along the length of the tool holding sleeve 11.
- the clutch sleeve 25, the second gear 26 (rotation transmission member 26), and the second clutch 27 are externally mounted on the outside of the tool holding sleeve 11.
- the clutch sleeve 25 is rotatably provided around the tool holding sleeve 11, and a large diameter portion 30 is formed at the rear end thereof via a flange 28. As shown in FIG. 4, an engaging claw 31 is formed on the inner surface of the large diameter portion 30.
- the second gear 26 is always meshed with the first gear 10 of the intermediate shaft 3 and is rotatably provided on the outer periphery of the clutch sleeve 25. As shown in FIGS. 5A and 5B, the second gear 26 and the flange 28 are formed so that the inclined convex portion 32 and the concave portion 33 face each other, and the clutch spring 34 urges each other. It is energized. The rotation of the second gear 26 To 25.
- the engagement claw 31 of the clutch sleeve 25 is configured to be able to mesh with the teeth of the second clutch 27.
- Teeth 36 and 37 are formed on the outer peripheral surface of the second clutch 27 before and after the central engagement groove 35. Then, the front teeth 36 are urged by the clutch spring 39 so as to be engaged with the engaging claws 31.
- the second clutch 27 has a key 40, and the tool holding sleeve 11 has a key groove 41.
- the key clutch 40 and the key groove 41 are connected to the tool holding sleeve 11 through the engagement between the key groove 40 and the key groove 41. ing .
- the second clutch 27 rotates integrally with the tool holding sleeve 11 and can slide along the longitudinal direction of the tool holding sleeve 11, and can engage and disengage from the clutch sleeve 25 by sliding.
- a lock bar 42 as a lock member is disposed behind the second clutch 27 so as to be movable back and forth in the same manner as the moving direction of the second clutch.
- the lock bar 42 is urged by the spring 43 so as to move to the second clutch 27 side.
- Teeth 44 are formed at the front end of the lock bar 42 so that the second clutch 27 is engaged with the rear teeth 37 of the second clutch 27 when the second clutch 27 moves backward away from the clutch sleeve 25. ing.
- Fig. 1 shows an impact. Rotation mode.
- the first clutch 6 connects the intermediate shaft 3 and the motion converting member 5 to the splines 7a, 7b. 8, and the second clutch 27 connects the clutch sleeve 25 and the tool holding sleeve 11.
- the rotational force is transmitted from the output shaft 2 to the intermediate shaft 3 via the reduction gear 4.
- the rotational torque of the intermediate shaft 3 is transmitted to the motion conversion member 5 via the first clutch 6.
- the motion converting member 5 rotates, the swing shaft 16 swings and further converted into the longitudinal motion of the piston 12.
- FIG. 2 shows a rotation mode.
- the first clutch 6 moves backward against the clutch spring 9
- the splines 7 a, 8 are disconnected, and the intermediate shaft 3 and Since the power transmission with the motion conversion member 5 is interrupted, the motion conversion member 5 does not operate.
- the rotational torque of the intermediate shaft 3 is transmitted to the clutch sleeve 25 via the first gear 10 and the second gear 26, and the force transmitted from the clutch sleeve 25 to the tool holding sleeve 11 via the second clutch 27 is also the leading tool. Only 22 rotational movements are performed.
- FIG. 3 shows a striking mode.
- the second clutch 27 moves backward against the clutch spring 39 and separates from the clutch sleeve 25, whereby the clutch sleeve 25 and the tool holding sleeve are separated. Since the rotation transmission with 11 is cut off, the tool holding sleeve 11 does not rotate. On the other hand, the rotational torque of the intermediate shaft 3 is transmitted only to the motion converting member 5, and only the striking motion of the tip tool 22 is performed.
- the main body 47a of the switching lever 47 is rotatably disposed in the housing 1, and the lever portion 48 is disposed on the outer side thereof, and the first switching shaft 50 and the second switching shaft are disposed on the inner side.
- a shaft 51 is formed at an eccentric position.
- the first switching shaft 50 is disposed so as to be engageable with the first clutch 6.
- the second switching shaft 51 is disposed so as to be engageable with the second clutch 27 via the shift plate 52.
- the shift plate 52 is provided on the inner wall 53 of the housing 1 so as to be movable back and forth, the front end is bent, and an operating piece 55 is formed in the middle.
- 47b is a push button and can be controlled so that the switching lever 47 set in a predetermined mode does not rotate freely!
- the first switching shaft 50 and the second switching shaft 51 are in the positions shown in FIG.
- the first clutch 6 and the second clutch 27 connect the intermediate shaft 3, the motion converting member 5, the clutch sleeve 25, and the tool holding sleeve 11, respectively.
- the second gear 26 and the flange 28 are formed such that the inclined convex portion 32 and the concave 33 portion face each other, and the clutch spring 34 (Fig. 1 ) To urge each other. Therefore, for example, in FIG. 1, when the tip tool 22 is clogged for some unforeseen reason, such as when a drill hits a concrete rebar, the clutch sleeve 25 is also locked, so the second gear 26 Is the above class Pushing forward against the spring 34, the clutch sleeve 25 is disengaged. As a result, only the second gear 26 is idling, and the safety mechanism absorbs the rotation of the intermediate shaft 3, so that the tool body is not swung.
- the clutch sleeve 25 may be moved by a predetermined distance so that the clutch sleeve 25 and the lock bar 42 are engaged with each other, and the tool holding sleeve is finely adjusted to lock it.
- the present invention can be used for a hammer drill capable of switching the operation mode to a striking mode, a rotation mode, and a rotation striking mode.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2006800428982A CN101309780B (zh) | 2005-11-16 | 2006-11-13 | 电锤 |
AU2006313824A AU2006313824A1 (en) | 2005-11-16 | 2006-11-13 | Hammer drill |
CA002629238A CA2629238A1 (en) | 2005-11-16 | 2006-11-13 | Hammer drill |
EP06823361A EP1950008A4 (en) | 2005-11-16 | 2006-11-13 | HAMMER DRILL |
US12/093,800 US20090159304A1 (en) | 2005-11-16 | 2006-11-13 | Hammer drill |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-331660 | 2005-11-16 | ||
JP2005331660A JP5055749B2 (ja) | 2005-11-16 | 2005-11-16 | ハンマドリル |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007058149A1 true WO2007058149A1 (ja) | 2007-05-24 |
Family
ID=38048535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/322587 WO2007058149A1 (ja) | 2005-11-16 | 2006-11-13 | ハンマドリル |
Country Status (7)
Country | Link |
---|---|
US (1) | US20090159304A1 (ja) |
EP (1) | EP1950008A4 (ja) |
JP (1) | JP5055749B2 (ja) |
CN (1) | CN101309780B (ja) |
AU (1) | AU2006313824A1 (ja) |
CA (1) | CA2629238A1 (ja) |
WO (1) | WO2007058149A1 (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5058726B2 (ja) * | 2007-09-06 | 2012-10-24 | 株式会社マキタ | 打撃工具 |
DE102007050307A1 (de) * | 2007-10-22 | 2009-04-23 | Robert Bosch Gmbh | Handwerkzeugmaschine |
JP5116029B2 (ja) * | 2008-03-05 | 2013-01-09 | 株式会社マキタ | ハンマードリル |
JP5376208B2 (ja) * | 2009-01-20 | 2013-12-25 | 日立工機株式会社 | 電動穿孔工具 |
DE102010002672A1 (de) * | 2010-03-09 | 2011-09-15 | Robert Bosch Gmbh | Bohrhammervorrichtung |
US8636081B2 (en) | 2011-12-15 | 2014-01-28 | Milwaukee Electric Tool Corporation | Rotary hammer |
DE102011085765A1 (de) * | 2011-11-04 | 2013-05-08 | Robert Bosch Gmbh | Handwerkzeugmaschine mit einem über einen Handschalter betätigbaren Antriebsmotor |
EP3636389A1 (en) | 2012-02-03 | 2020-04-15 | Milwaukee Electric Tool Corporation | Rotary hammer |
DE102012206445A1 (de) * | 2012-04-19 | 2013-10-24 | Hilti Aktiengesellschaft | Werkzeugmaschine |
US9630307B2 (en) | 2012-08-22 | 2017-04-25 | Milwaukee Electric Tool Corporation | Rotary hammer |
US10518399B2 (en) * | 2015-09-30 | 2019-12-31 | Chervon (Hk) Limited | Clutch device and power tool with clutch device |
JP6589992B2 (ja) * | 2015-10-30 | 2019-10-16 | 工機ホールディングス株式会社 | ハンマドリル |
JP7331864B2 (ja) * | 2018-11-29 | 2023-08-23 | 工機ホールディングス株式会社 | 打撃作業機 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09272005A (ja) * | 1996-02-09 | 1997-10-21 | Ryobi Ltd | 回転工具の動作切り換え機構 |
JPH10175178A (ja) * | 1996-12-13 | 1998-06-30 | Hitachi Koki Co Ltd | ハンマドリルの動作モード切換装置 |
JPH10291173A (ja) * | 1997-04-18 | 1998-11-04 | Hitachi Koki Co Ltd | ハンマドリルの動作モード切換装置 |
JP2001105214A (ja) * | 1999-10-05 | 2001-04-17 | Makita Corp | ハンマードリル |
JP2003071745A (ja) * | 2001-12-21 | 2003-03-12 | Hitachi Koki Co Ltd | ハンマドリル |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3506695A1 (de) * | 1985-02-26 | 1986-08-28 | Robert Bosch Gmbh, 7000 Stuttgart | Bohrhammer |
JPS62124883A (ja) * | 1985-11-26 | 1987-06-06 | 芝浦メカトロニクス株式会社 | ロ−タリ−ハンマ |
DE4020269A1 (de) * | 1990-06-26 | 1992-01-02 | Bosch Gmbh Robert | Elektrische schlagbohrmaschine |
DE4135240A1 (de) * | 1991-10-25 | 1993-04-29 | Bosch Gmbh Robert | Bohrhammer |
DE4205840C2 (de) * | 1992-02-26 | 1996-10-24 | Kress Elektrik Gmbh & Co | Bohrhammer mit Meißelfunktion |
DE9307523U1 (de) * | 1993-05-18 | 1994-09-29 | Bosch Gmbh Robert | Elektrowerkzeug, insbesondere Schlagbohrmaschine oder Bohrhammer |
DE19545260A1 (de) * | 1995-11-24 | 1997-05-28 | Black & Decker Inc | Bohrhammer |
JP3450558B2 (ja) * | 1995-12-25 | 2003-09-29 | 株式会社マキタ | 電動工具 |
GB0008465D0 (en) * | 2000-04-07 | 2000-05-24 | Black & Decker Inc | Rotary hammer mode change mechanism |
DE10312980B4 (de) * | 2003-03-24 | 2018-05-03 | Robert Bosch Gmbh | Bohrhammer oder Schlagbohrmaschine |
DE102004018084B3 (de) * | 2004-04-08 | 2005-11-17 | Hilti Ag | Hammerbohrgerät |
-
2005
- 2005-11-16 JP JP2005331660A patent/JP5055749B2/ja not_active Expired - Fee Related
-
2006
- 2006-11-13 WO PCT/JP2006/322587 patent/WO2007058149A1/ja active Application Filing
- 2006-11-13 CA CA002629238A patent/CA2629238A1/en not_active Abandoned
- 2006-11-13 CN CN2006800428982A patent/CN101309780B/zh not_active Expired - Fee Related
- 2006-11-13 EP EP06823361A patent/EP1950008A4/en not_active Withdrawn
- 2006-11-13 AU AU2006313824A patent/AU2006313824A1/en not_active Abandoned
- 2006-11-13 US US12/093,800 patent/US20090159304A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09272005A (ja) * | 1996-02-09 | 1997-10-21 | Ryobi Ltd | 回転工具の動作切り換え機構 |
JPH10175178A (ja) * | 1996-12-13 | 1998-06-30 | Hitachi Koki Co Ltd | ハンマドリルの動作モード切換装置 |
JPH10291173A (ja) * | 1997-04-18 | 1998-11-04 | Hitachi Koki Co Ltd | ハンマドリルの動作モード切換装置 |
JP2001105214A (ja) * | 1999-10-05 | 2001-04-17 | Makita Corp | ハンマードリル |
JP2003071745A (ja) * | 2001-12-21 | 2003-03-12 | Hitachi Koki Co Ltd | ハンマドリル |
Non-Patent Citations (1)
Title |
---|
See also references of EP1950008A4 * |
Also Published As
Publication number | Publication date |
---|---|
JP5055749B2 (ja) | 2012-10-24 |
CA2629238A1 (en) | 2007-05-24 |
EP1950008A4 (en) | 2010-11-24 |
AU2006313824A1 (en) | 2007-05-24 |
US20090159304A1 (en) | 2009-06-25 |
CN101309780A (zh) | 2008-11-19 |
JP2007136586A (ja) | 2007-06-07 |
CN101309780B (zh) | 2010-09-01 |
EP1950008A1 (en) | 2008-07-30 |
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