CN103079770B - Hand-held power tool - Google Patents
Hand-held power tool Download PDFInfo
- Publication number
- CN103079770B CN103079770B CN201080068697.6A CN201080068697A CN103079770B CN 103079770 B CN103079770 B CN 103079770B CN 201080068697 A CN201080068697 A CN 201080068697A CN 103079770 B CN103079770 B CN 103079770B
- Authority
- CN
- China
- Prior art keywords
- driver element
- hand held
- electric tool
- impact axis
- main handle
- 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.)
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Classifications
-
- 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
Landscapes
- 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
Technical field
The present invention relates to a kind of hand held electric tool, especially hammer drill and/or electric pick.
Background technology
Including beater mechanism to produce shock pulse and to include driver element to drive the handss of beater mechanism along impact axis
The formula electric tool of holding is known.The driver element of this hand held electric tool supports in the housing of this hand held electric tool
Side in the main handle towards hand held electric tool of impact axis.
Content of the invention
The present invention relates to a kind of hand held electric tool, especially hammer drill and/or electric pick, it includes beater mechanism with along punching
Hit axis and produce shock pulse, and include driver element at least to drive beater mechanism.Additionally, hand held electric tool includes shell
Body and include at least one main handle, described housing at least surrounds beater mechanism and driver element, and described main handle is connected to shell
Body simultaneously can be held by operator.
Advise at least most of first side being positioned at impact axis in described housing of described main handle, and drive single
At least most of of unit is positioned at second side contrary with the first side impacting axis in the housing.Preferably, driver element
The strong point is positioned at the side of the dorsad main handle of impact axis.Hand held electric tool according to the present invention can be that battery supplies
Electricity and/or based on cable.Herein, term " beater mechanism " should be defined as such a mechanism, and it is set to: logical
Cross with least one hammer part and at least one piston cooperate to produce pulse, particularly axially shock pulse, and/or by pulse,
Particularly axially shock pulse is directly or indirectly transferred to the tool heads of hand held electric tool, and described tool heads are embedded in handss
Hold in the tool tip holder of formula electric tool.Tool heads may be structured to drill bit and/or chisel head.In order to shock pulse is indirect
Be transferred to tool heads, beater mechanism preferably include by with the hammer impulse member that formed of the detached part of part.When beater mechanism is grasped
When making, impulse member directly contact tool heads are to transmit shock pulse.Kettle shape piston is preferably constructed according to the piston of the present invention.
Piston can also be configured to be considered suitable other shapes by those of skill in the art.Impact axis is preferably along instrument
The rotation axiss of head keeper extend, and described tool tip holder to be driven at least through beater mechanism by driver element.In addition,
Herein " driver element " should be defined to such a unit, and it at least includes motor, particularly electro-motor, described horse
Reach and at least there is rotor and stator.Driver element and main handle are preferably located at being prolonged by perpendicular to impact axis of the inside of housing
In the region of axis cutting stretched.Herein, " main handle " should be defined to a kind of handle of hand held electric tool, and it is fixed
Position is in the side contrary with tool tip holder.Preferably, main handle has the extension less than 20cm along the circumference of main handle.
Therefore, the cramped construction of hand held electric tool can valuably be realized.
Additionally, at least the 50% of driver element, especially the quality share of driver element and/or volume share at least 50%
It is arranged in the second side of the impact axis contrary with the first side impacting axis.It is advantageous that the quality share of driver element and/
Or the 80% of volume share is arranged in the second side of the impact axis contrary with the first side impacting axis.Therefore, hand electric
The center of gravity of instrument can be by determining that position in the housing of hand held electric tool for the driver element is valuably affected.
Preferably, driver element at least 100%, especially the quality share of driver element and/or volume share be at least
100% the second side being arranged in the impact axis contrary with the first side impacting axis.Therefore, achievable driver element is in housing
In beneficial arrangement.Preferably, driver element is arranged in the region of close main handle of the inside of housing, thus center of gravity is leaned on
Nearly main handle positioning.Therefore, operator can be easily manipulated by hand held electric tool.
In the preferred embodiment of hand held electric tool, driver element is located remote from respect to impact axis.Excellent
Selection of land, driver element is located remote from along perpendicular to the direction of impact axis, thus impact edge between axis and driver element hanging down
There is space in the straight direction in impact axis.Therefore, beneficial arrangement in the inside of housing for the achievable driver element.
In addition, driver element has rotation axiss, it is arranged essentially parallel to described impact axis and extends.Herein, art
Language " substantially parallel " should be defined as the orientation that first direction is with respect to second direction, and wherein, first direction is with respect to second
The deviation in direction is less than 5 ° and is preferably less than 2 °.Therefore, it is possible to valuably using packaging space.Additionally, can be valuably real
The cramped construction of existing hand held electric tool.
Additionally, beater mechanism includes wobble drive portion with the piston as beater mechanism by the convert rotational motion of driver element
Reciprocating motion.Wobble drive portion is supported on the second side of the impact axis contrary with the first side impacting axis in the housing.
Wobble drive portion implements in the manner known to persons skilled in the art.In the operation of hand held electric tool, wobble drive portion
Arrangement with reference to driver element arrangement can to incline pendulum effect produce actively impact.
In a preferred embodiment, hand held electric tool also includes energy storage module, with to driver element, spy
It is not the electro-motor feed energy of driver element.The side of the dorsad driver element in main handle for the energy storage module can connect
It is connected to main handle.Preferably, energy storage module is integrated in main handle.Therefore, achievable energy feed departs from cable
Compact hand held electric tool.Additionally, can achieve beneficial Mass Distribution, wherein, the major part of center of gravity is fixed near main handle
Position.
In addition, at least 80% positioning of at least the 80% of main handle, especially the quality share of main handle and/or volume share
The first side in impact axis.Preferably, the quality share of main handle and/or the 100% of volume share are positioned at impact axis
First side.Therefore, can achieve beneficial Mass Distribution.
Brief description
By reading detailed description below and combining accompanying drawing, other objects, features and advantages of the present invention will become
It is clear that wherein, two special embodiments of the present invention are disclosed as illustrated examples.
Fig. 1 shows the housing with fractionation of the hand held electric tool according to the present invention representing in a schematic way
Partial first embodiment；And
Fig. 2 shows the housing with fractionation of the hand held electric tool according to the present invention representing in a schematic way
Partial alternate embodiment.
Specific embodiment
Fig. 1 shows hand held electric tool 10a, and it includes beater mechanism 12a to produce impact arteries and veins along impact axis 14a
Punching, and include driver element 16a to drive beater mechanism 12a.Hand held electric tool 10a is configured to battery powered hammer
Bore 32a.Alternatively, hand held electric tool 10a can also be configured to electric pick (not shown).Hammer drill 32a includes housing 18a,
It surrounds beater mechanism 12a and driver element 16a.Housing 18a has two housing parts 34a(and only illustrates one in FIG),
It can be prolonged along by impact axis 14a and by the rotation axiss 24a of driver element 16a by retaining element (not shown)
The plane stretched connects.One of Fig. 1 middle housing part 34a is split.
Hammer drill 32a also includes main handle 20a, and it is connected to housing 18a and can be held by using the operator of hammer drill 32a.
Main handle 20a also includes two main handle parts 36a(and only illustrates one in FIG). each main handle part 36a respectively with shell
One of body portion 34a forms integral piece.Therefore, main handle part 36a also can be logical by retaining element (not shown) edge
Overbump axis 14a and the plane interconnection being extended by the rotation axiss 24a of driver element 16a.Main handle 20a is along the back of the body
Extend to the direction of driver element 16a.The 100% of the quality share of main handle 20a and/or volume share is positioned at impact axis
First side of 14a.Additionally, the power that main handle 20a is included on impact axis 14a applies point.Therefore, by operator using hammer
When boring 32a, the major part of produced power is along the parallel or coaxial operative orientation effect in impact axis 14a.In addition, hammer drill
32a includes tool tip holder 38a to accommodate tool heads (not shown).Tool tip holder 38a is along hand held electric tool 10a
Principal spread direction 40a be positioned at the side 42a contrary with the main handle 20a of hammer drill 32a.Principal spread direction 40a is parallel to punching
Hit the impact axis 14a of mechanism 12a.
The driver element 16a of hand held electric tool 10a be positioned in housing 18a impact axis 14a's and impacting shaft
The second contrary side 22a of first side of line 14a.At least the 50% of driver element 16a be arranged in impact axis 14a's and impacting shaft
The second contrary side 22a of first side of line 14a.From space, driver element 16a is arranged in one in housing 18a and puts down
Above face, this plane pass through impact axis 14a extend, and perpendicular to housing 18a housing parts 34a can along interconnection
Plane.
Driver element 16a includes electro-motor 44a and at least one is embodied as the gear 46a of little gear.Gear 46a and electricity
The armature shaft 48a of dynamic motor 44a forms as one part.Driver element 16a may also include another motor, such as air driven motor
Etc. driving beater mechanism 12a.Additionally, driver element 16a may also include gear unit, such as such as planetary gear, it is along electricity
Power train arrangement between dynamic motor 44a and beater mechanism 12a.
In a preferred embodiment of hand held electric tool 10a, the quality share of driver element 16a and/or body
The 100% of long-pending share is arranged in the second side 22a of the impact axis 14a contrary with the first side impacting axis 14a.Driver element
16a is located remote from respect to impact axis 14a.The rotation axiss 24a of the electro-motor 44a of driver element 16a is substantially flat
Row extends in impact axis 14a.The rotation axiss 24a of electro-motor 44a is located remote from respect to impact axis 14a.Rotation
Between axis 24a and impact axis 14a, the distance on the direction 50a perpendicular with impact axis 14a and rotation axiss 24a can
Be electro-motor 44a on the direction 50a perpendicular with impact axis 14a and rotation axiss 24a expanded range about
1/3rd.
In addition, the beater mechanism 12a of hand held electric tool 10a includes wobble drive portion 26a, by driver element 16a
Convert rotational motion be beater mechanism 12a piston 28a reciprocating motion.Piston 28a is embodied as kettle shape piston.Along impacting shaft
The shock pulse of line 14a to be produced in known manner by beater mechanism 12a.Wobble drive portion 26a also supports in housing 18a
In the impact axis 14a second side 22a contrary with first side of impact axis 14a.The quality share of wobble drive portion 26a
And/or at least the 80% of volume share is positioned at second side of the impact axis 14a contrary with the first side impacting axis 14a
22a.
Beater mechanism 12a also includes the hammer pipe 52a with cylindrical shape.Hammer pipe 52a is slidably supported along impact axis 14a
Piston 28a, hammer part and impulse member.The rotation axiss of hammer pipe 52a parallel to or coaxial in impact axis 14a.Therefore, driver element
16a and beater mechanism 12a is in the second side 22a edge impact axis of the impact axis 14a contrary with first side of impact axis 14a
14a relative to each other progressively positions.The rotation axiss of hammer pipe 52a are along the direction 50a perpendicular with impact axis 14a with respect to pendulum
The rotation axiss displacement of dynamic drive division 26a.The rotation axiss of wobble drive portion 26a are parallel to impact axis 14a and parallel to electricity
The rotation axiss 24a of dynamic motor 44a.Additionally, the rotation axiss of wobble drive portion 26a are along the side perpendicular with impact axis 14a
To the rotation axiss 24a displacement with respect to electro-motor 44a for the 50a.
In addition, hand held electric tool 10a includes energy storage module 30a(schematically showing in FIG) with to drive
The electro-motor 44a feed energy of moving cell 16a.Energy storage module 30a main handle 20a dorsad driver element 16a one
Side can be connected to main handle 20a.Energy storage module 30a is embodied as accumulator battery 54a.Accumulator battery 54a is by stop even
Socket part etc. can be connected to main handle 20a.Accumulator battery 54a also can be fully inserted in main handle 20a.Accumulator battery 54a is
With respect to the balance mass of driver element 16a, thus the Mass Distribution of hand held electric tool 10a is largely near main handss
Handle 20a.Because the center of gravity of hand held electric tool 10a is near main handle 20a, operator can be easily manipulated by hand electric work
Tool 10a.
Fig. 2 shows the alternate embodiment of the present invention.Substantially identical part, feature and function are attached by identical
Figure marker number.For the difference of embodiment, alphabetical a and b is added in reference.Explained below is limited to
In the difference of the embodiment that figure 1 illustrates and describe.For unchanged part, feature and function it should be pointed out that
It is that the explanation to the embodiment of Fig. 1 has been described with these parts, feature and function.
Fig. 2 shows hand held electric tool 10b, and it includes beater mechanism 12b to produce impact arteries and veins along impact axis 14b
Punching, and include driver element 16b to drive beater mechanism 12b.Hand held electric tool 10b includes housing 18b, described housing bag
Enclose beater mechanism 12b and driver element 16b.In addition, hand held electric tool 10b includes main handle 20b, it is connected to housing
18b and being held using the operator of hand held electric tool 10b.Main handle 20b major part is positioned at punching in housing 18b
Hit axis 14b first side, and the major part of driver element 16b is positioned at and the first side phase impacting axis 14b in housing 18b
The second anti-side 22b.Hand held electric tool 10b is embodied based on the hammer drill 32b of cable.The electricity of hand held electric tool 10b
Power cable (not shown) must can connect before powering to the driver element 16b of hand held electric tool 10b first in operator
It is connected to power supply.
The main handle 20b of hand held electric tool 10b is embodied as v shape, thus main handle 20b has the first arm 56b and
Two arm 58b.First arm 56b and the second arm 58b is interconnected by the sweep 60b of main handle 20b.Additionally, main handle 20b
The first arm 56b be connected to housing 18b in the region of driver element 16b, and the second arm 58b is in the region of beater mechanism 12b
In be connected to housing.
Therefore, the present invention can put into practice and/or be configured to situation about being not such as described in detail above.For illustrating and describe
Multiple changes of various structures, replacement, modification and equivalent would is that for those of skill in the art apparent
's.Therefore, the present invention is not intended in being limited in shown specific embodiment, but is intended in covering such as claim
Whole such replacement in broad range and spirit that limited, being likely to be included in the present invention, modification and equivalence replacement.
Disclosures of all patents, patent application and printed publication are incorporated herein with its integral form.
Claims (8)
1. a kind of hand held electric tool, comprising:
Beater mechanism (12a；12b), in order to produce along impact axis (14a；Shock pulse 14b)；
Driver element (16a；16b), in order at least to drive described beater mechanism (12a；12b)；
Housing (18a；18b), it at least surrounds described beater mechanism (12a；12b) with described driver element (16a；16b)；And
At least one main handle (20a；20b), it is connected to described housing (18a；Be held can 18b) and by operator, described
Main handle extends along the direction of dorsad driver element；
Wherein, described main handle (20a；20b) largely or entirely it is positioned at described impact axis (14a；The first side 14b),
And, described driver element (16a；16b) in housing (18a；Largely or entirely it is positioned in 18b) and described impact axis
(14a；The second contrary side (22a of the first side 14b)；22b)；
Described main handle is v shape, has the first arm (56b) and the second arm (58b), the first arm connects in the region of driver element
It is connected to housing, and the second arm is connected to housing in the region of beater mechanism.
2. hand held electric tool as claimed in claim 1, wherein, described driver element (16a；At least 50% cloth 16b)
Put with described impact axis (14a；The contrary described impact axis (14a in the first side 14b)；The second side (22a 14b)；
22b).
3. hand held electric tool as claimed in claim 1, wherein, described driver element (16a；16b) 100% be arranged in
Described impact axis (14a；The contrary described impact axis (14a in the first side 14b)；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 punching
Hit axis (14a；14b) it is located remote from.
5. as described hand held electric tool arbitrary in claim 1-4, wherein, described driver element (16a；16b) have
It is arranged essentially parallel to described impact axis (14a；Rotation axiss (24a 14b) extending；24b).
6. as described hand held electric tool arbitrary in claim 1-4, wherein, described beater mechanism (12a；12b) include
Wobble drive portion (26a；26b), in order to by described driver element (16a；Convert rotational motion 16b) is described beater mechanism
(12a；Piston (28a 12b)；Reciprocating motion 28b), wherein, described wobble drive portion (26a；26b) in described housing
(18a；It is supported in 18b) and described impact axis (14a；The contrary described impact axis (14a in the first side 14b)；14b)
Second side (22a；22b).
7., as described hand held electric tool arbitrary in claim 1-4, wherein, described hand held electric tool also includes energy
Amount storage module (30a), in order to described driver element (16a；16b) feed energy, wherein, described energy storage module
(30a) it is suitable in described main handle (20a；20b) dorsad described driver element (16a；Side 16b) is connected to described main handle
(20a；20b).
8. as described hand held electric tool arbitrary in claim 1-4, wherein, described main handle (20a；20b) at least
80% is positioned at described impact axis (14a；Described first side 14b).
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103079770A CN103079770A (en) | 2013-05-01 |
| CN103079770B true CN103079770B (en) | 2017-02-01 |
Family
ID=45722823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080068697.6A Active CN103079770B (en) | 2010-08-27 | 2010-08-27 | Hand-held power tool |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103079770B (en) |
| WO (1) | WO2012024842A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022216964A1 (en) | 2021-04-07 | 2022-10-13 | Milwaukee Electric Tool Corporation | Impact power tool |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3834886A1 (en) * | 1988-10-13 | 1990-04-19 | Matthias Friedrich | Portable drilling machine with electric drive |
| DE10136515C2 (en) * | 2001-07-26 | 2003-10-23 | Wacker Construction Equipment | Hammer and / or hammer with handle |
| US6785950B1 (en) * | 2001-08-31 | 2004-09-07 | Jonard Industries Corp. | Battery-powered wire insertion impact tool |
| DE102006059633B4 (en) * | 2006-12-14 | 2016-12-01 | Robert Bosch Gmbh | impact drill |
| CN201147918Y (en) * | 2007-05-21 | 2008-11-12 | 吴世雄 | Electric impact drill having superior heat dissipation performance |
-
2010
- 2010-08-27 CN CN201080068697.6A patent/CN103079770B/en active Active
- 2010-08-27 WO PCT/CN2010/076409 patent/WO2012024842A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN103079770A (en) | 2013-05-01 |
| WO2012024842A1 (en) | 2012-03-01 |
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| C14 | Grant of patent or utility model | ||
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