CN103079770A - Hand-held power tool - Google Patents

Hand-held power tool Download PDF

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Publication number
CN103079770A
CN103079770A CN2010800686976A CN201080068697A CN103079770A CN 103079770 A CN103079770 A CN 103079770A CN 2010800686976 A CN2010800686976 A CN 2010800686976A CN 201080068697 A CN201080068697 A CN 201080068697A CN 103079770 A CN103079770 A CN 103079770A
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CN
China
Prior art keywords
driver element
hand held
electric tool
held electric
axis
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
CN2010800686976A
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Chinese (zh)
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CN103079770B (en
Inventor
甄波
万莫山
柴海华
宋春雷
陈铁
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.)
Bosch Power Tools China Co Ltd
Original Assignee
Bosch Power Tools China Co Ltd
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Publication date
Application filed by Bosch Power Tools China Co Ltd filed Critical Bosch Power Tools China Co Ltd
Publication of CN103079770A publication Critical patent/CN103079770A/en
Application granted granted Critical
Publication of CN103079770B publication Critical patent/CN103079770B/en
Active legal-status Critical Current
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/006—Parallel drill and motor spindles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/06—Means for driving the impulse member
    • B25D2211/061—Swash-plate actuated impulse-driving mechanisms
    • 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
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/245—Spatial arrangement of components of the tool relative to each other

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

A hand-held power tool (10a; 10b), in particular a drill hammer and/or a chisel hammer, comprises a striking mechanism (12a; 12b) to produce a striking pulse along a striking axis (14a; 14b) and a drive unit (16a; 16b) to drive at least the striking mechanism (12a; 12b). Moreover, the hand-held power tool (10a; 10b) comprises a housing (18a; 18b) that surrounds at least the striking mechanism (12a; 12b) and the drive unit (16a; 16b) and comprises at least one main handle (20a; 20b) which is connected to the housing (18a; 18b) and which can be gripped by an operator. At least the bulk of the main handle (20a; 20b) is located in the housing (18a; 18b) on a first side of the striking axis (14a; 14b), and at least the bulk of the drive unit (16a; 16b) is located in the housing (18a; 18b) on a second side (22a; 22b) opposite to the first side of the striking axis (14a; 14b). Thereby, a compact structure of the hand-held power tool (10a; 10b) can advantageously be achieved, and the operator can easily handle the hand-held power tool (10a; 10b).

Description

Hand held electric tool
Technical field
The present invention relates to a kind of hand held electric tool, especially hammer drill and/or electric pick.
Background technology
Comprise that beater mechanism is to produce shock pulse and to comprise that driver element is known with the hand held electric tool that drives beater mechanism along impacting axis.The driver element of this hand held electric tool is supported on the side towards the main handle of hand held electric tool of impacting axis in the housing of this hand held electric tool.
Summary of the invention
The present invention relates to a kind of hand held electric tool, especially hammer drill and/or electric pick, it comprises beater mechanism producing shock pulse along impacting axis, and comprises that driver element is to drive at least beater mechanism.In addition, hand held electric tool comprises housing and comprises at least one main handle, and described housing surrounds beater mechanism and driver element at least, and described main handle is connected in housing and can be by operator grasps.
Advise that the most of at least of described main handle is positioned at first side of impacting axis in described housing, and at least major part of driver element is positioned at second side opposite with first side of impacting axis in housing.Preferably, the strong point of driver element is positioned at a side of the dorsad main handle that impacts axis.Can be battery powered and/or based on cable according to hand held electric tool of the present invention.In this article, term " beater mechanism " should be defined as a kind of like this mechanism, it is set to: by cooperating to produce pulse, especially axial impact pulse with at least one hammer part and at least one piston, and/or pulse, especially axial impact pulse be passed to the tool heads of hand held electric tool directly or indirectly, described tool heads is embedded in the tool heads retainer of hand held electric tool.Tool heads can be constructed to drill bit and/or chisel head.For shock pulse is passed to tool heads indirectly, beater mechanism preferably includes the impulse member that is formed by the parts that separate with the hammer part.When beater mechanism was operated, impulse member directly contacted tool heads to transmit shock pulse.Preferably be constructed to kettle shape piston according to piston of the present invention.Piston also can be constructed to be thought other shape of suiting by those of skill in the art.Impact axis and preferably extend along the rotation of tool heads retainer, described tool heads retainer is driven by beater mechanism at least by driver element.In addition, " driver element " should be defined as a kind of like this unit in this article, and it comprises motor, particularly electro-motor at least, and described motor has rotor and stator at least.Driver element and main handle preferred orientation the inside of housing by the zone perpendicular to the axis cutting of impacting Axis Extension in.In this article, " main handle " should be defined as a kind of handle of hand held electric tool, and it is positioned at a side opposite with the tool heads retainer.Preferably, main handle has extension less than 20cm along the circumference of main handle.Therefore, can realize valuably the cramped construction of hand held electric tool.
In addition, at least 50% of driver element, at least 50% of the quality share of driver element and/or volume share the second side that is arranged in the impact axis opposite with first side of impacting axis especially.Useful is that 80% of the quality share of driver element and/or volume share is arranged in the second side of the impact axis opposite with first side of impacting axis.Therefore, the center of gravity of hand held electric tool can by determine driver element in the housing of hand held electric tool the position and affected valuably.
Preferably, at least 100% of driver element, at least 100% of the quality share of driver element and/or volume share the second side that is arranged in the impact axis opposite with first side of impacting axis especially.Therefore, can realize the useful layout of driver element in housing.Preferably, driver element is arranged in the zone of close main handle of inside of housing, thereby center of gravity is near the main handle location.Therefore, the operator can easily handle hand held electric tool.
In the preferred embodiment of hand held electric tool, driver element is remotely located with respect to impacting axis.Preferably, there be space thereby impact between axis and the driver element in driver element along the direction perpendicular to the impact axis along remotely locating perpendicular to the direction of impacting axis.Therefore, can realize the useful layout of driver element in the inside of housing.
In addition, driver element has rotation, and it is arranged essentially parallel to described impact Axis Extension.In this article, term " substantially parallel " should be defined as first direction with respect to the orientation of second direction, and wherein, first direction departs from less than 5 ° and preferably less than 2 ° with respect to second direction.Therefore, can use valuably packaging space.In addition, can realize valuably the cramped construction of hand held electric tool.
In addition, beater mechanism comprises that wobble drive section is to be converted into rotatablely moving of driver element the reciprocating motion of the piston of beater mechanism.Wobble drive section is supported on the second side of the impact axis opposite with first side of impacting axis in housing.Wobble drive section implements in the manner known to persons skilled in the art.In the operation of hand held electric tool, the layout of wobble drive section can produce positive impact to the pendulum effect of inclining in conjunction with the layout of driver element.
In a preferred embodiment, hand held electric tool also comprises the energy storage module, with the electro-motor feed energy to driver element, particularly driver element.The energy storage module can be connected in main handle in a side of the dorsad driver element of main handle.Preferably, the energy storage module integration is in main handle.Therefore, can realize that the energy feed breaks away from the hand held electric tool of the compactness of cable.In addition, can realize useful Mass Distribution, wherein, the major part of center of gravity is near the main handle location.
In addition, at least 80% of main handle, especially at least 80% of the quality share of main handle and/or volume share be positioned at first side of impacting axis.Preferably, 100% of the quality share of main handle and/or volume share be positioned at first side of impacting axis.Therefore, can realize useful Mass Distribution.
Description of drawings
By reading following detailed description also by reference to the accompanying drawings, other objects, features and advantages of the present invention will become apparent, and wherein, two special embodiment of the present invention as an illustration property example are disclosed.
Fig. 1 shows in a schematic way first embodiment according to the housing parts with fractionation of hand held electric tool of the present invention of expression; And
Fig. 2 shows in a schematic way the alternate embodiment according to the housing parts with fractionation of hand held electric tool of the present invention of expression.
The specific embodiment
Fig. 1 shows hand held electric tool 10a, and it comprises that beater mechanism 12a impacts axis 14a with the edge and produces shock pulse, and comprises that driver element 16a is to drive beater mechanism 12a.Hand held electric tool 10a is constructed to battery powered hammer drill 32a.Alternatively, hand held electric tool 10a also can be constructed to the electric pick (not shown).Hammer drill 32a comprises housing 18a, and it surrounds beater mechanism 12a and driver element 16a.Housing 18a has two housing parts 34a(and only illustrate one in Fig. 1), it can connect along the plane that the rotation 24a that passes through to impact axis 14a and pass through driver element 16a extends by the retaining element (not shown).A quilt among Fig. 1 middle shell part 34a splits.
Hammer drill 32a also comprises main handle 20a, and it is connected in housing 18a also can be by the operator grasps of using hammer drill 32a.Main handle 20a comprises that also two main handle part 36a(only illustrate one in Fig. 1). each main handle part 36a respectively with housing parts 34a in one form integral piece.Therefore, main handle part 36a also can be by the retaining element (not shown) along being connected to each other by impacting the plane that axis 14a and the rotation 24a by driver element 16a extend.Main handle 20a is along the dorsad direction extension of driver element 16a.100% of the quality share of main handle 20a and/or volume share is positioned at first side of impacting axis 14a.In addition, main handle 20a is included in the power application point of impacting on the axis 14a.The major part of the power that therefore, is produced when using hammer drill 32a by the operator is along parallel or coaxial operative orientation effect in impacting axis 14a.In addition, hammer drill 32a comprises that tool heads retainer 38a is to hold the tool heads (not shown).Tool heads retainer 38a is positioned at a side 42a opposite with the main handle 20a of hammer drill 32a along the principal spread direction 40a of hand held electric tool 10a.Principal spread direction 40a is parallel to the impact axis 14a of beater mechanism 12a.
The driver element 16a of hand held electric tool 10a is positioned at the second opposite side 22a of the first side with impacting axis 14a that impacts axis 14a in housing 18a.At least 50% of driver element 16a is arranged in the second opposite side 22a of the first side with impacting axis 14a that impacts axis 14a.From the space, driver element 16a is arranged in housing 18a above the plane, and extend by impacting axis 14a on this plane, and can be along it interconnected plane perpendicular to the housing parts 34a of housing 18a.
Driver element 16a comprises that electro-motor 44a and at least one are embodied as the gear 46a of pinion.The armature shaft 48a of gear 46a and the electro-motor 44a part that forms as one.Driver element 16a also can comprise another motor, drive beater mechanism 12a such as pneumatic actuation motor etc.In addition, driver element 16a also can comprise gear unit, such as for example planetary gear, and it is along the power train arrangement between electro-motor 44a and the beater mechanism 12a.
In the preferred embodiment of hand held electric tool 10a, 100% of the quality share of driver element 16a and/or volume share is arranged in the second side 22a of the impact axis 14a opposite with first side of impacting axis 14a.Driver element 16a remotely locates with respect to impacting axis 14a.The rotation 24a of the electro-motor 44a of driver element 16a is arranged essentially parallel to and impacts axis 14a extension.The rotation 24a of electro-motor 44a remotely locates with respect to impacting axis 14a.Rotation 24a and to impact between the axis 14a in the distance on the direction 50a perpendicular with impacting axis 14a and rotation 24a can be about 1/3rd of the expanded range of electro-motor 44a on the direction 50a perpendicular with impacting axis 14a and rotation 24a.
In addition, the beater mechanism 12a of hand held electric tool 10a comprises the 26a of wobble drive section, rotatablely moving of driver element 16a is converted into the reciprocating motion of the piston 28a of beater mechanism 12a.Piston 28a is embodied as kettle shape piston.Produced in known manner by beater mechanism 12a along the shock pulse that impacts axis 14a.The 26a of wobble drive section also is supported on the second opposite side 22a of the first side with impacting axis 14a that impacts axis 14a in housing 18a.At least 80% of the quality share of the 26a of wobble drive section and/or volume share is positioned at the second side 22a of the impact axis 14a opposite with first side of impacting axis 14a.
Beater mechanism 12a also comprises the hammer pipe 52a with cylindrical shape.Hammer pipe 52a is slidably supported piston 28a, hammer part and impulse member along impacting axis 14a.The rotation of hammer pipe 52a is parallel to or is coaxial in impacting axis 14a.Therefore, driver element 16a and beater mechanism 12a relative to each other progressively locate along impacting axis 14a at the second side 22a of the impact axis 14a opposite with first side of impacting axis 14a.The rotation of hammer pipe 52a is along the rotation displacement of the direction 50a perpendicular with impacting axis 14a with respect to the 26a of wobble drive section.The rotation of the 26a of wobble drive section is parallel to the rotation 24a that impacts axis 14a and be parallel to electro-motor 44a.In addition, the rotation of the 26a of wobble drive section is along the rotation 24a displacement of the direction 50a perpendicular with impacting axis 14a with respect to electro-motor 44a.
In addition, hand held electric tool 10a comprises that energy storage module 30a(is schematically illustrated in Fig. 1) with the electro-motor 44a feed energy to driver element 16a.Energy storage module 30a main handle 20a dorsad the side of driver element 16a can be connected in main handle 20a.Energy storage module 30a is embodied as batteries 54a.Batteries 54a can be connected in main handle 20a by stop connecting portion etc.Batteries 54a also can be fully inserted among the main handle 20a.Batteries 54a is the balance mass with respect to driver element 16a, thereby the Mass Distribution of hand held electric tool 10a is to a great extent near main handle 20a.Because the center of gravity of hand held electric tool 10a is near main handle 20a, the operator can easily handle hand held electric tool 10a.
Fig. 2 shows alternate embodiment of the present invention.Identical parts, feature and function are by identical Reference numeral numbering in essence.For the difference of embodiment, alphabetical a and b are added in the Reference numeral.Following description is limited in the difference of the embodiment with describing shown in Figure 1.For unaltered parts, feature and function, it is pointed out that these parts, feature and function have been described in the explanation of the embodiment of Fig. 1.
Fig. 2 shows hand held electric tool 10b, and it comprises that beater mechanism 12b impacts axis 14b with the edge and produces shock pulse, and comprises that driver element 16b is to drive beater mechanism 12b.Hand held electric tool 10b comprises housing 18b, and described housing surrounds beater mechanism 12b and driver element 16b.In addition, hand held electric tool 10b comprises main handle 20b, the operator grasps that it is connected in housing 18b and can be used hand held electric tool 10b.Main handle 20b major part is positioned in housing 18b impacts axis 14b the first side, and the major part of driver element 16b is positioned at the second side 22b opposite with first side of impacting axis 14b in housing 18b.Hand held electric tool 10b is embodied as the hammer drill 32b based on cable.The power cable (not shown) of hand held electric tool 10b can must at first be connected in power supply the operator before the driver element 16b power supply of hand held electric tool 10b.
The main handle 20b of hand held electric tool 10b is embodied as V-arrangement, thereby main handle 20b has the first arm 56b and the second arm 58b.The first arm 56b and the second arm 58b are connected to each other by the sweep 60b of main handle 20b.In addition, the first arm 56b of main handle 20b is connected in housing 18b in the zone of driver element 16b, and the second arm 58b is connected in housing in the zone of beater mechanism 12b.
Therefore, can to put into practice and/or be configured to not be as above mask body situation about describing in the present invention.For the multiple change of the various structures that illustrate and describe, substitute, modification and equivalence will be apparent for those of skill in the art.Therefore, the present invention is intended to be limited in the specific embodiment of showing, but be intended to cover limit such as claim, may be included in whole in broad range of the present invention and the spirit substitute, revise and equivalence is replaced.Whole patents, patent application and the printed publication quoted herein are bonded to this with its integral form.

Claims (8)

1. hand held electric tool comprises:
Beater mechanism (12a; 12b), in order to produce along impacting axis (14a; Shock pulse 14b);
Driver element (16a; 16b), in order to drive at least described beater mechanism (12a; 12b);
Housing (18a; 18b), it surrounds described beater mechanism (12a at least; 12b) with described driver element (16a; 16b); And
At least one main handle (20a; 20b), it is connected in described housing (18a; 18b) and can be by operator grasps;
Wherein, described main handle (20a; At least major part 20b) is at described housing (18a; Be positioned at described impact axis (14a 18b); The first side 14b), and, described driver element (16a; At least major part 16b) is at housing (18a; Be positioned at 18b) and described impact axis (14a; The second side (22a that the first side 14b) is opposite; 22b).
2. hand held electric tool as claimed in claim 1, wherein, described driver element (16a; At least 50% being arranged in and described impact axis (14a 16b); The described impact axis (14a that the first side 14b) is opposite; The second side (22a 14b); 22b).
3. such as arbitrary described hand held electric tool in the claim of front, wherein, described driver element (16a; At least 100% being arranged in and described impact axis (14a 16b); The described impact axis (14a that the first side 14b) is opposite; The second side (22a 14b); 22b).
4. hand held electric tool as claimed in claim 3, wherein, described driver element (16a; 16b) with respect to described impact axis (14a; 14b) remotely locate.
5. such as arbitrary described hand held electric tool in the claim of front, wherein, described driver element (16a; 16b) have and be arranged essentially parallel to described impact axis (14a; Rotation (the 24a that 14b) extends; 24b).
6. such as arbitrary described hand held electric tool in the claim of front, wherein, described beater mechanism (12a; 12b) comprise (26a of wobble drive section; 26b), in order to described driver element (16a; Rotatablely moving 16b) is converted into described beater mechanism (12a; Piston (28a 12b); Reciprocating motion 28b), wherein, the described wobble drive (26a of section; 26b) at described housing (18a; Be supported on 18b) and described impact axis (14a; The described impact axis (14a that the first side 14b) is opposite; The second side (22a 14b); 22b).
7. such as arbitrary described hand held electric tool in the claim of front, wherein, described hand held electric tool also comprises energy storage module (30a; 30b), in order to described driver element (16a; 16b) feed energy, wherein, described energy storage module (30a; 30b) be suitable at described main handle (20a; 20b) described driver element (16a dorsad; Side 16b) is connected in described main handle (20a; 20b).
8. such as arbitrary described hand held electric tool in the claim of front, wherein, described main handle (20a; 20b) at least 80% be positioned at described impact axis (14a; Described the first side 14b).
CN201080068697.6A 2010-08-27 2010-08-27 Hand-held power tool Active CN103079770B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2010/076409 WO2012024842A1 (en) 2010-08-27 2010-08-27 Hand-held power tool

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CN103079770A true CN103079770A (en) 2013-05-01
CN103079770B CN103079770B (en) 2017-02-01

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WO (1) WO2012024842A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022216964A1 (en) 2021-04-07 2022-10-13 Milwaukee Electric Tool Corporation Impact power tool

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3834886A1 (en) * 1988-10-13 1990-04-19 Matthias Friedrich Portable drilling machine with electric drive
US20040104033A1 (en) * 2001-07-26 2004-06-03 Wolfgang Schmid Hammer drill and/or paving breaker with a handle
US6785950B1 (en) * 2001-08-31 2004-09-07 Jonard Industries Corp. Battery-powered wire insertion impact tool
CN101204741A (en) * 2006-12-14 2008-06-25 罗伯特·博世有限公司 Impact drill
CN201147918Y (en) * 2007-05-21 2008-11-12 吴世雄 Electric impact drill having superior heat dissipation performance

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3834886A1 (en) * 1988-10-13 1990-04-19 Matthias Friedrich Portable drilling machine with electric drive
US20040104033A1 (en) * 2001-07-26 2004-06-03 Wolfgang Schmid Hammer drill and/or paving breaker with a handle
US6785950B1 (en) * 2001-08-31 2004-09-07 Jonard Industries Corp. Battery-powered wire insertion impact tool
CN101204741A (en) * 2006-12-14 2008-06-25 罗伯特·博世有限公司 Impact drill
CN201147918Y (en) * 2007-05-21 2008-11-12 吴世雄 Electric impact drill having superior heat dissipation performance

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WO2012024842A1 (en) 2012-03-01
CN103079770B (en) 2017-02-01

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