CN109262549A - Electric tool - Google Patents
Electric tool Download PDFInfo
- Publication number
- CN109262549A CN109262549A CN201710580772.0A CN201710580772A CN109262549A CN 109262549 A CN109262549 A CN 109262549A CN 201710580772 A CN201710580772 A CN 201710580772A CN 109262549 A CN109262549 A CN 109262549A
- Authority
- CN
- China
- Prior art keywords
- transmission component
- component
- jackshaft
- revolving speed
- driving
- 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
Links
Classifications
-
- 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
- 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
-
- 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
- B25D16/003—Clutches specially adapted therefor
-
- 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
- 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
- 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
-
- 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
- B25D2250/195—Regulation means
- B25D2250/201—Regulation means for speed, e.g. drilling or percussion speed
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
The present invention provides a kind of electric tools comprising driving assembly；Spinning movement component；Hammering action component；And the rotary motion of the driving component is changed into the transmission component of rotary motion and at least one of the reciprocating motion for beating action component of the spinning movement component, the transmission component includes: jackshaft (210)；It impacts transmission component (220), can be disconnected to the jackshaft (210) and engage, and the rotary motion of jackshaft (210) is transferred to the hammering action component when engaging to make its reciprocating motion；It can be disconnected to the first revolving speed transmission component (230) and the second revolving speed transmission component (240) of engagement with the jackshaft (210) respectively；The electric tool has following operation mode: first operator scheme, wherein the jackshaft (210) passes through engagement the first revolving speed transmission component (230) of driving but do not engage because without driving any one in the second revolving speed transmission component (240) and impact transmission component (220)；Second operator scheme, wherein the jackshaft (210) does not engage because without driving the first revolving speed transmission component (230) but by both engagement the second revolving speed transmission component (240) of driving and impact transmission component (220).
Description
Technical field
This application involves a kind of electric tools, and in particular to one kind can export the electric tool, outstanding of two different rotating speeds
It is hammer drill.
Background technique
It only exports the drill jig formula of rotary motion in general, hammer drill can have and only exports the hammer mode of reciprocal pereussion movement, or
Some hammer drills of person also have while exporting the hammer drill mode of rotary motion and pereussion movement.
Currently, most hammer drills only includes providing the single transmission mechanism of single transmission ratio, under drill jig formula and hammering into shape
Under drill jig formula, output hammer this transmission mechanism of Guan Douyu engagement of hammer drill, so the revolving speed of both mode bottom tools is identical.
However, in practical applications, according to the difference of target workpiece material or according to other requirements, user is wanted to
Select different revolving speeds.For example, under drill jig formula, user it is generally desirable to it is available the range of speeds is larger, to wish revolving speed higher with
Just higher drilling efficiency is obtained, such as wants to obtain the revolving speed of 3000RPM.Under hammer drill mode, user is usually uncommon
The torque for hoping that revolving speed is lower and transmits is higher, to reduce influence of the rotation to target efficiency of cutter.It is obviously above-mentioned
" three modes " be not able to satisfy the requirement of this revolving speed.
It is capable of the hammer drill of outputting two rotating speeds in the presence of one kind, but has additionally introduced rotation axis, causes hammer drill structure bulky, answers
It is miscellaneous thus at high cost.
It wants to solve the above problems.
Summary of the invention
The object of the present invention is to provide the hammer drills relatively simple for structure that one kind can export two revolving speeds.
For this purpose, the present invention provides a kind of electric tool, including providing the driving assembly of rotary motion；Spinning movement group
Part comprising the hammer pipe for being rotated by driving and the cutter of electric tool being driven to rotate together；It is back and forth transported in hammer pipe
The hammering action component of dynamic hammering cutter；And the rotary motion of the driving component is changed into the spinning movement component
The transmission component of rotary motion and at least one of the reciprocating motion for beating action component, the transmission component include:
The jackshaft for being driven and rotated by the driving component, the jackshaft limit axial direction and perpendicular to described
The circumferential direction of axial direction；
Transmission component is impacted, can be disconnected to the jackshaft and engage, and when engaging by the rotation of jackshaft
Movement, which is transferred to the hammering action component, makes its reciprocating motion；With
First revolving speed transmission component and the second revolving speed transmission component, can be disconnected to the jackshaft engage respectively, and
And the rotary motion of jackshaft is transferred to hammer pipe when engaging, make to hammer pipe high speed rotation and low speed rotation into shape respectively；
Wherein, the electric tool has following operation mode: first operator scheme, wherein the jackshaft passes through engagement
And it drives the first revolving speed transmission component but does not engage because any in the second revolving speed transmission component and impact transmission component without driving
Person；Second operator scheme, wherein the jackshaft does not engage because without driving the first revolving speed transmission component but being driven by engagement
Both dynamic second revolving speed transmission component and impact transmission component.
According to the second aspect of the invention, a kind of electric tool is provided, including providing the driving assembly of rotary motion；Rotation
Turn action component comprising the hammer pipe for being rotated by driving and the cutter of electric tool being driven to rotate together；Positioned at hammer pipe in into
Row moves back and forth the hammering action component of hammering cutter；And the rotary motion of the driving component is changed into the rotation and is moved
Make the transmission component of rotary motion and at least one of the reciprocating motion for beating action component of component, the transmission component
Include:
The jackshaft for being driven and rotated by the driving component, the jackshaft limit axial direction and perpendicular to described
The circumferential direction of axial direction；
Transmission component is impacted, can be disconnected to the jackshaft and engage, and when engaging by the rotation of jackshaft
Movement, which is transferred to the hammering action component, makes its reciprocating motion；With
First revolving speed transmission component and the second revolving speed transmission component, can be disconnected to the jackshaft engage respectively, and
And the rotary motion of jackshaft is transferred to hammer pipe when engaging, make to hammer pipe high speed rotation and low speed rotation into shape respectively,
Wherein, the second revolving speed transmission component passes through the first revolving speed transmission component when being driven by the jackshaft
The hammer pipe is driven to rotate.
Electric tool according to the present invention realizes electronic work with the simple structure for only including a jackshaft and clutch part
Two revolving speed rotary motions of tool, so that electric tool at least has three operation modes of high speed drill mode and low speed hammer drill mode,
It meets the most of hammer drill and applies needs.In addition, electric tool of the invention, which also has, works as knife under low speed hammer drill operation mode
When tool encounters the resistance more than predetermined value, or hammer the driving motor and hammer for making hammer drill when pipe encounters the moment of resistance more than predetermined value into shape
The protection mechanism that engagement between pipe disconnects automatically, avoid the occurrence of hammer drill destroyed in hammer drill on too hard workpiece motor or
It destroys other components of hammer drill, even cause the danger of personnel's property loss.
Detailed description of the invention
May be better understood from the preferred embodiment of the present application described with reference to the accompanying drawing the above-mentioned of the application and
Other feature and advantage, in which:
Fig. 1 is the broken section rough schematic view of hammer drill according to the present invention, wherein part unrelated to the invention is thin
Section is omitted；
Fig. 2 a-2b is the cross-sectional view and perspective view of the sleeve part of the hammer drill of first embodiment according to the present invention respectively；
Fig. 3 is the perspective view of the middleware of the sleeve part of the hammer drill of first embodiment according to the present invention；
Fig. 4 a-4b is the cross-sectional view and perspective view of the oscillation bearing of the hammer drill of first embodiment according to the present invention respectively；
Fig. 5 a-5b be respectively the variation example of the oscillation bearing of the hammer drill of first embodiment according to the present invention cross-sectional view and
Perspective view；
Fig. 6 is the vertical of the first driving gear of the first revolving speed transmission component of the first embodiment of hammer drill according to the present invention
Body figure；
Fig. 7 is between the second driving gear of the second revolving speed transmission component of the first embodiment of hammer drill according to the present invention
The perspective view of spacing body；
The broken section of five operation modes of the hammer drill of first embodiment according to the present invention is shown respectively in Fig. 8 a-8f
Figure, wherein Fig. 8 c and 8d shows two different middle bit patterns；
Fig. 9 a-9b is the cross-sectional view and perspective view of the sleeve part of the hammer drill of second embodiment according to the present invention respectively；
Figure 10 is the perspective view of the oscillation bearing of the hammer drill of second embodiment according to the present invention；
Figure 11 a-11d is the broken section of three operation modes of the hammer drill of second embodiment according to the present invention respectively
Figure, wherein Figure 11 b and 11c shows two different middle bit patterns；
Figure 12 a-12d is the broken section of four operation modes of the hammer drill of third embodiment according to the present invention respectively
Figure；
Figure 13 a-13d is the broken section of four operation modes of the hammer drill of fourth embodiment according to the present invention respectively
Figure；With
Figure 14 and Figure 15 is the solid of mutually matched first and second driven gear of hammer drill according to the present invention respectively
Figure.
Specific embodiment
Below with reference to the accompanying drawings preferred embodiment the present invention is described in detail shown in.Through each attached drawing, identical reference number
Word includes the same or similar component of structure or function.Those skilled in the art should be understood that is provided in attached drawing only says
Bright property embodiment, is not in any way limit the scope of the present invention.Component shown in the accompanying drawings is necessarily present in all
In embodiment, there may be in embodiment for the component being not shown in the drawings.
First embodiment according to the present invention is described referring initially to Fig. 1-8f.
As shown in fig. 1, hammer drill according to the present invention generally comprises the driving for providing power and exporting rotary motion
Component (not shown), for hammer drill cutter provide rotary motion make hammer drill realize bore function hammer tube assembly 10, be located at hammer pipe group
It moves back and forth in the hammer pipe 110 of part 10 and hammers cutter to realize that the impact assembly 40 of hammer function (is only illustrated in Fig. 1
Property identify), by the power of driving assembly be transferred to hammer tube assembly 10 and impact assembly 40 transmission component 20, and by hammer manage
110 toolframes 30 for remaining able to rotate with it and itself remain the cutter of hammer drill (are only schematically identified in Fig. 1
Out).The hammer pipe 110 for hammering tube assembly 10 into shape drives the toolframe 30 of hammer drill and cutter to be thereon rotated, impact assembly 40
Then hammer the cutter output hammering movement on toolframe 30.Driving assembly hammers tube assembly 10 into shape, and impact assembly 40 and toolframe 30 are not
It is emphasis of the invention, transmission component 20 is only described in detail herein.
According to the present invention, transmission component 20 includes mainly jackshaft 210, and the rotary motion of jackshaft 210 is changed into punching
The rotary motion of jackshaft 210 is changed into the hammer of hammer tube assembly 10 by the impact driving assembly 220 for hitting the reciprocating motion of component 40
The rotary motion of jackshaft 210 is changed into hammer pipe by the first revolving speed transmission component 230 of the first revolving speed rotary motion of pipe 110
Second revolving speed transmission component 240 of 110 the second revolving speed rotary motion, and the clutch component being set on jackshaft 210
250.First revolving speed transmission component 230 and the second revolving speed transmission component 240 are respectively provided with the first transmission ratio and the second transmission ratio, example
If the first transmission ratio as shown in figure embodiment is less than the second transmission ratio.In this way, hammer pipe 110 and thus toolframe 30 and thereon
Cutter by the first revolving speed transmission component 230 be driven when ratio by the second revolving speed transmission component 240 be driven when revolving speed it is high.
Jackshaft 210 is supported by the bearing 212 and 214 at both ends, is disposed on jackshaft 210 by driving assembly
The motor shaft of driving motor drive so that the master gear 216 that jackshaft 210 rotates, as impact one of driving assembly 220
The oscillation bearing 222 divided constitutes the clutch part of a part of clutch component 250, is specially sleeve part 252, as the first revolving speed
First driving gear 232 of a part of transmission component 230, and a part as the second revolving speed transmission component 240
Two driving gears 242.Jackshaft 210 and all these components above it have public rotation axis, to limit
Common axial direction and the common circumferential direction perpendicular to the axial direction, be referred to as herein " axial direction " and
" circumferential direction ".
The oscillation bearing 222 of impact driving assembly 220 is supported by jackshaft 210 and can be independently of jackshaft 210 certainly
It is rotated by ground.In addition to oscillation bearing 222, impact driving assembly 210 further includes the swing rod 224 engaged with oscillation bearing 222.Pendulum
Bar 224 is connected with oscillation bearing 222 at one end, is pivotally connected to the impact assembly 40 in hammer pipe 110 in the other end.Work as swing
When bearing 222 rotates, swing rod 224 transports impact assembly 40 back and forth in hammer pipe 110 in page institute planar reciprocally swinging
It is dynamic, so that the cutter of hammer drill is exported hammer movement.
Clutch component 250 mainly includes described sleeve pipe part 252, and sleeve part 252 is directly or indirectly joined to jackshaft
210 rotate together with jackshaft 210, and can be driven by unshowned pattern switching component and axially slide along jackshaft 210
It is dynamic.Specifically, in the illustrated embodiment, sleeve part 252 is joined to jackshaft 210 via middleware 254.Middleware 254 can be with
It is integrated, can also be then attached to thereon independently of the formation of jackshaft 210 as embodiment in figure with jackshaft 210.
Middleware 254 and sleeve part 252 are engaged by engagement features to be made relatively unrotatable between the two but allows in the axial direction
Upper opposite sliding.
In an embodiment of the present invention, sleeve part 252 and middleware 254 are respectively provided with such as Fig. 2 a-2b and shown in Fig. 3 show
Example property structure.Sleeve part 252 has at least one protrusion 2524 extended radially inwardly from inner circumferential surface, such as one group of protrusion
2524, it is four protrusions 2524 in figure.These protrusions 2524 are distributed along the circumferential direction of sleeve part 252, adjacent protrusion 2524
Between limit interval.Correspondingly, as shown in figure 3, middleware 254 be formed on its outer peripheral surface in axial direction extend it is convex
Portion 2546 has recess portion 2544 between adjacent protrusion 2546.The protrusion 2524 of sleeve part 252 is accepted in middleware 254
It can slide in the axial direction in recess portion 2544 and in recess portion 2544.In this way, sleeve part 252 can with middleware 254, because
And with 210 synchronous rotary of jackshaft, while can axially be slided relative to sleeve part 252, thus relative to jackshaft 210.
First revolving speed transmission component 230 mainly includes intermeshing first driving gear 232 and the first driven gear
234, the first driving gear 232 is directly or indirectly set on jackshaft 210 and can rotate independently of jackshaft 210,
First driven gear 234 is fixed to hammer pipe 110 by any mode known in the art, such as key connection mode, overload are protected
Shaft coupling etc. is protected, so that the rotate driving of the first driven gear 234 hammers 110 synchronous rotary of pipe into shape.
Second revolving speed transmission component 240 mainly includes intermeshing second driving gear 242 and the second driven gear
244.Second driving gear 242 is supported on jackshaft 210 by spacer 246, the second driving gear 242 by with spacer
246 are fixed together synchronously but rotate independently of jackshaft 210.As shown in fig. 7, jackshaft 246 is sleeved on jackshaft 210
Upper and the inner hole including passing through the first driving gear 232 and the second driving gear 242 reduced diameter section 2467 and be suitable for from
The sleeve part 252 of seaming element 250 can be disconnected to the enlarged diameter section 2469 of engagement.Second driven gear 244 is sleeved on hammer pipe 110
And it can be disconnected to the first driven gear 234 and engage.
Sleeve part 252 is selectively one of with spacer 246 (i.e. the second driving gear 242) and the first driving gear 232
It can be disconnected to engagement.In this way, making the rotation of jackshaft 210 be transferred to the second revolving speed biography when sleeve part 252 is engaged with spacer 246
When dynamic component 240, the rotation of the second driven gear 244 of the second revolving speed transmission component 240 is via the first driven gear 234 and hammer
The key connection of pipe 110 is transferred to hammer pipe 110, makes to hammer into shape pipe 110 with the second revolving speed low speed rotation.When sleeve part 252 and the first active
When the engagement of gear 232 makes the rotation of jackshaft 210 be transferred to the first revolving speed transmission component 230, the first revolving speed transmission component 230
The rotation of first driven gear 234 is transferred directly to hammer pipe 110 by the key connection of itself and hammer pipe 110, makes to hammer into shape pipe 110 with first
Revolving speed high speed rotation.
Certainly, sleeve part 252 can be with the first revolving speed transmission component 230, specially the first driving gear 232 and the second revolving speed
Transmission component 240 is specially that spacer 246 does not engage.At this point, sleeve part 252 is selectively engageable to impact driving group
The oscillation bearing 222 of part 220, is changed into impact assembly 40 for the rotary motion of jackshaft 210 and moves to the hammering of hammer drill cutter
Make, or also do not engaged with oscillation bearing 222, hammer drill is in idle mode at this time, and cutter acts also without brill without hammer
Movement.Herein, both of these case is referred to as " middle bit pattern ", and middle bit pattern includes idle mode as described in the former and such as
Hammer mode described in the latter.
As above-mentioned, the rotation of jackshaft 210 is transferred to impact driving assembly via the sleeve part 252 of clutch component 250
220, and/or it is transferred to any one in the first revolving speed transmission component 230 and the second revolving speed transmission component 240, sleeve part 252 and pendulum
Dynamic bearing 222 is connect in a manner of it can disconnect respectively with the first driving gear 232 and with the second driving gear 242, at this
This in text " connection " includes that the two is directly engaged and connected, also comprising by least one intermediate member that the two is connected to same
Step movement.Specifically, sleeve part 252 is arranged along jackshaft 210 slidably, and it is default to be predetermined at least three
Position, such as four or five predeterminated positions, each of these predeterminated positions predeterminated position correspond to a behaviour of hammer drill
Operation mode.Correspondingly, hammer drill of the invention has at least three, such as three or four or five operation modes.
First preferred embodiment according to the present invention tool there are five operation mode, below with reference to Fig. 4 a-8f describe this
The structure of one embodiment.
In this first preferred embodiment, as illustrated in figures 2 a-2b, sleeve part 252 further includes the inner peripheral surface from sleeve part 252
Protruding radially inward one group of protrusion 2522, for driving impact driving assembly 220.Shown protrusion 2522 is along sleeve part 252
Circumferential direction distribution, limit gap 2523 between adjacent protrusion 2522.Sleeve part 252 further includes from sleeve part 252
The protruding radially inward another group of protrusion 2526 of inner peripheral surface, for driving the first revolving speed transmission component 230 and the transmission of the second revolving speed
Any one in component 240.As protrusion 2522, protrusion 2524 and protrusion 2526 are spaced apart all along circumferential direction, adjacent
The gap for engaging the protrusion matched is all limited between protrusion.In the present embodiment, in the axial direction, it is configured to use
For the protrusion 2522 engaged with oscillation bearing 222 is disposed relative to drive path close to driving motor side (on
Swim side), the protrusion 2526 for being configured for engaging with first or second driving gear 232 or 242 is disposed relative to be driven
Close to the side (downstream side) of cutter for path, the protrusion 2524 for being configured for engagement middleware 254 is located at protrusion 2522
Between protrusion 2526 (medial side), and protrusion 2524, protrusion 2522 and protrusion 2526 all include uniform in circumferential direction
Four protrusions at interval, however, it will be understood to one skilled in the art that the quantity of every group of protrusion is not limited to four.
Correspondingly, as shown in Fig. 4 a-4b, oscillation bearing 222, particularly for the axis engaged with sleeve part 252
Holding section includes one group of protrusion 2222 being distributed along the circumferential direction on its outer peripheral surface, and adjacent protrusion 2222, which limits, to be suitable for connecing
Receive the gap 2223 (Fig. 4 b) of the protrusion 2522 of sleeve part 252.When the protrusion of sleeve part 252 2522 is accepted in oscillation bearing
In 222 gap 2223, when the protrusion 2222 of oscillation bearing 222 is accepted in the gap 2523 of sleeve part 252 simultaneously, swing
Bearing 222 is engaged with sleeve part 252 and quilt cover pipe fitting 252 drives to rotate with jackshaft 210 together, and hammer drill output hammering is transported
It is dynamic.When the protrusion of sleeve part 252 2522 is placed in protrusion 2222 leftward space (oscillation bearing 222 and the swing rod of oscillation bearing 222
Space between the ball bearing sections and protrusion 2222 of 224 engagements) in, the protrusion 2222 of oscillation bearing 222 is accepted in set simultaneously
When in the space between the protrusion 2522 and 2524 of pipe fitting 252, oscillation bearing 222 is disengaged with sleeve part 252, oscillation bearing
The 222 not drivings of quilt cover pipe fitting 252, hammer drill do not export hammering movement.
Fig. 5 a-5b shows the alternative embodiment of oscillation bearing 222, and the oscillation bearing being different from Fig. 4 a-4b only exists
In the oscillation bearing 222 in Fig. 5 a-5b includes two groups of protrusions 2222 and 2224 axially spaced apart, this two groups convex
The axial length of circumferential annular gap 2225 between portion 2222 and 2224 is equal or slightly larger than the protrusion 2522 of sleeve part 252
Axial length.When the protrusion 2522 of any group of protrusion and sleeve part 252 in two groups of protrusions 2222 and 2224 of oscillation bearing 222
When engagement, oscillation bearing 222 is engaged with sleeve part 252 and quilt cover pipe fitting 252 drives and rotates with jackshaft 210, thus
The cutter of hammer drill is hammered by impact assembly 40.Otherwise when the protrusion 2522 of sleeve part 252 is placed in the circumferential ring of oscillation bearing 222
When in shape gap 2225, oscillation bearing 222 is disengaged with sleeve part 252, and quilt cover pipe fitting 252 does not drive oscillation bearing 222, no
Hammer the cutter of hammer drill.
In fig. 6 it is shown that the structure of the first driving gear 232 according to a first embodiment of the present invention.First driving tooth
Wheel 232 includes major diameter meshing gear section and the reduced diameter section for engaging with sleeve part 252, the first driving gear 232
Reduced diameter section includes from one arranged along circumferential direction group protrusion 2322 of its outer peripheral surface radially outward projection, adjacent protrusion
2322 limit the gap 2323 for being suitable for receiving the protrusion 2526 of sleeve part 252.When the protrusion of sleeve part 252 2526 is received in
When in the gap 2323 of the first driving gear 232,232 quilt cover pipe fitting 252 of the first driving gear drives and revolves with jackshaft 210
Turn, the cutter of hammer drill exports the first high revolving speed rotary motion as a result,.When sleeve part 252 be axially moveable and make protrusion 2526 from
After removing in the gap 2323 of first driving gear 232, the first driving gear 232 is disengaged with sleeve part 252, and first actively
Quilt cover pipe fitting 252 does not drive gear 232.
Spacer that is according to a first embodiment of the present invention, being fixed together with the second driving gear 242 is shown in Fig. 7
246.The reduced diameter section 2467 of spacer 246 is only fixed together with the second driving gear 242, and enlarged diameter section 2469 is suitable for
Clutch collar pipe fitting 252.Second axial direction part 2469 is formed with from one group of protrusion 2462 of its outer peripheral surface radially outward projection, adjacent
The gap 2463 for being suitable for receiving the protrusion 2526 of sleeve part 252 is limited between protrusion 2462.When the protrusion of sleeve part 252 2526
When being received in the gap 2463 of spacer 246, spacer 246 and the driving of 242 quilt cover pipe fitting 252 of the second driving gear
And rotated with jackshaft 210, the cutter of hammer drill exports the second slow-speed of revolution rotary motion as a result,.When sleeve part 252 is axially moveable
And make protrusion 2526 after removing in the gap of spacer 246 2463, spacer 246 and the second driving gear 242 and casing
Part 252 is disengaged to be driven without quilt cover pipe fitting 252.
Sleeve part 252 is described along each predeterminated position of middleware 210 and pair of hammer drill with reference to Fig. 8 a-8f separately below
Operation mode is answered, wherein what is be respectively adopted in Fig. 8 c and 8d is 222 knot of oscillation bearing shown in Fig. 4 a-4b and Fig. 5 a-5b
Structure.It note that and hereinafter used term " left side " and " right side " for clarity, these terms are relative to referenced by observation
For the observer of attached drawing.
As shown in Figure 8 a, sleeve part 252 is disposed along the first predeterminated position of jackshaft 210.In this position, sleeve part
252 protrusion 2522 is not engaged with the protrusion 2222 of oscillation bearing 222, but is located at the position on the axial right side in protrusion 2222
Place, but each protrusion 2526 of sleeve part 252 is accepted in the first driving gear 232 of the first revolving speed transmission component 230 respectively
In gap 2323 between protrusion 2322, while a corresponding protrusion 2322 is received in the gap of each protrusion 2526 respectively.Protrusion
2526 do not engage the protrusion 2462 on spacer 246.So sleeve part 252 is engaged with the first driving gear 232 at this time, and with
Oscillation bearing 222 and the second driving gear 242 are disengaged, and the rotation of jackshaft 210 cannot be transferred to pendulum by sleeve part 252
Dynamic bearing 222 and the second driving gear 242, but it is only transferred to the first driving gear 232, via the first revolving speed transmission component
Cutter on 230 driving toolframes 30 carries out the spinning movement of the first revolving speed, i.e. high speed.The high speed drill of hammer drill is obtained as a result,
Mode.
As shown in Figure 8 b, sleeve part 252 is moved to the left along jackshaft 210 is substantially equal to or slightly exceeding protrusion
The distance of 2526 axial lengths reaches the second predeterminated position.At this point, the protrusion 2522 of sleeve part 252 is moved to and oscillation bearing
222 protrusion 2222 engages, so that sleeve part 252 is engaged with oscillation bearing 222, the rotation of jackshaft 210 is via sleeve part
252 are transferred to the cutter progress pereussion movement for impacting transmission component 220 thus driving on toolframe 30.On the other hand, due to
The length of the protrusion 2322 of one driving gear 232 in axial direction be set greater than sleeve part 252 it is above-mentioned along jackshaft 210 to the left
The mobile distance in side, the holding of the first driving gear 232 are engaged with sleeve part 252, and each protrusion 2526 of sleeve part 252 still engages
The protrusion 2322 of first driving gear 232, without engaging the protrusion 2462 on spacer 246.So the rotation of jackshaft 210
It still is able to be transferred to the first revolving speed transmission component 230, the cutter being transferred on toolframe 30 realization by sleeve part 252
The high speed rotation of cutter acts.The high energy rate forging hammer drill jig formula of hammer drill is obtained as a result,.
In Fig. 8 c, as sleeve part 252 further moves to the left along jackshaft 210, the protrusion 2526 of sleeve part 252
It is moved away from the first driving gear 232, but the protrusion 2526 of sleeve part 252 is not also convex with the spacer 246 of the second driving gear 242
Portion 2462 engages.So the first driving gear 232 and the second driving gear 242 do not engage with sleeve part 252, sleeve part
252 cannot be transferred to the rotary motion of jackshaft 210 in first revolving speed transmission component 230 and the second revolving speed transmission component 240
Any one, hammers pipe 110 into shape and therefore cutter cannot be rotated.On the other hand, the protrusion 2522 of sleeve part 252 still with pendulum
The protrusion 2222 of dynamic bearing 222 combines (oscillation bearing 222 in Fig. 4 a-4b), i.e., sleeve part 252 still with oscillation bearing 222
Engagement, thus the rotary motion of jackshaft 210 is transferred to oscillation bearing 222 by sleeve part 252, impact assembly 40 hammers hammer drill
Cutter.As a result, in Fig. 8 c, hammer drill is in the hammer mode of one of middle bit pattern.
Equally in this position, if oscillation bearing 222 using the structure in Fig. 5 a-5b, the protrusion of sleeve part 252 at this time
2522 are bonded in the circumferential annular gap 2225 between two groups of protrusions 2222 and 2224 of oscillation bearing 222, as shown in figure 8d,
Then sleeve part 252 is disengaged with oscillation bearing 222, and the rotary motion of jackshaft 210 cannot be transferred to swing by sleeve part 252
Bearing 222 does not export hammering movement, then hammer drill is in two idle mode of middle bit pattern.
In Fig. 8 e, continue to be moved to the left sleeve part 252 along jackshaft 210, the protrusion 2522 of sleeve part 252 be in
The state that the protrusion 2222 of oscillation bearing 222 engages, i.e. sleeve part 252 are engaged with oscillation bearing 222, and hammer drill can export hammer
Hit movement.The protrusion 2526 of sleeve part 252 is then moved to connect with the protrusion 2462 on the spacer 246 of the second driving gear 242
Close, i.e., sleeve part 252 is engaged with the second driving gear 242, so sleeve part 252 by the rotary motion of jackshaft 210 via
Spacing body 246 is transferred to the second revolving speed transmission component 240 compared with large transmission ratio, hammers pipe 110 into shape and therefore cutter carries out low speed
Rotary motion.So hammer drill is in low speed hammer drill mode.
Continue to be moved to the left position shown in sleeve part 252 to Fig. 8 f, the protrusion of sleeve part 252 along jackshaft 210
2522 are detached from the engagement with the protrusion 2222 of oscillation bearing 222, i.e. sleeve part 252 is disengaged with oscillation bearing 222, and hammer drill is not
Hammering movement is exported again.And the protrusion 2526 of sleeve part 252 is still engaged with each other with the protrusion 2462 on spacer 246, i.e. casing
Part 252 is engaged with the second driving gear 242, so cutter still carries out low-speed rotation.At this point, hammer drill is in low speed drill jig
Formula.
This first embodiment institute there are five in mode, one group of the centre protrusion 2524 of sleeve part 252 always with centre
The axial protrusion 2524 of part 252 engages, so as to transmit the rotation of jackshaft 210.
In the present first embodiment, the protrusion 2222 of oscillation bearing 222 in the axial direction be approximately equal to the length to casing
Three times of the length of the protrusion 2522 of part 252 in this direction, so, three in five predeterminated positions of sleeve part 252 are pre-
If the impact driving assembly 40 of hammer drill can drive the cutter of hammer drill to carry out hammer movement in position, hammer drill includes high energy rate forging hammer drill jig
Hammer mode three operation modes comprising hammer movement in formula, low speed hammer drill mode and middle bit pattern.
In the present first embodiment, the protrusion 2322 of the first driving gear 232 being approximately equal to the length to axially
252 upper convex portion 2526 of sleeve part along twice of length of this axial direction, so, in five predeterminated positions of sleeve part 252
In two predeterminated positions, the first rotary drive assembly 230 of hammer drill can drive the cutter at high speeds of hammer drill to rotate, and hammer drill includes
High speed drill mode and high energy rate forging hammer drill jig formula two operation modes comprising high speed rotation movement.Equally, the protrusion on spacer 246
2462 axially be approximately equal to the length to twice of length of 252 upper convex portion 2526 of sleeve part along this axial direction, institute
The cutter low speed rotation of hammer drill can be driven with, the second rotary drive assembly 240 of hammer drill, hammer drill include low speed drill jig formula and
Low speed hammer drill mode two operation modes comprising low speed rotation movement.
Describing tool above for the first embodiment of the present invention, there are five the hammer drills of operation mode.It should be understood that according to
The hammer drill of the principle of the present invention can not have all above-mentioned five operation modes.For example, if high energy rate forging hammer drill jig formula and low speed bore
For mode using less, hammer drill can not have any one in the two modes.This can be by changing the protrusion on sleeve part 252
2522 and 2526, first the protrusion 2322 on driving gear 232, any one in the protrusion 2462 on spacer 246 or appoint several persons
Length in axial direction and realize.
The second embodiment of the present invention is described below with reference to Fig. 9 a-11d.
In this second embodiment, as shown in Fig. 9 a-9b, for driving the protrusion of oscillation bearing 222' on sleeve part 252'
The length of 2522' in axial direction is lengthened out (convex in Fig. 1 to the protrusion engaged with for the protrusion 2546 with middleware 254
Portion 2524) continuously, it is indicated in figure with 2522'.Figure 10 shows the structure of the oscillation bearing 222' in this second embodiment, convex
The length of portion 2222' in axial direction is also lengthened out.Other modular constructions in the present embodiment are identical with the first embodiment.
Figure 11 a-11d shows three operation modes only having according to the hammer drill of this second embodiment, i.e. high speed drill jig
Formula, low speed hammer drill mode and middle bit pattern.
Figure 11 a shows the high speed drill mode of the hammer drill of this second embodiment, wherein at sleeve part 252' protrusion 2522'
In the unassembled state of protrusion 2222' with oscillation bearing 222', i.e., sleeve part 252' is disengaged with oscillation bearing 222',
So hammer drill cannot export hammering movement at this time.The protrusion 2526 of sleeve part 252' is in and the first revolving speed transmission component 230
The state that the protrusion 2322 of first driving gear 232 engages, i.e., sleeve part 252' is engaged with the first driving gear, so hammer drill
Cutter can export high speed rotary motion at this time.
In Figure 11 b, sleeve part 252' to moving to left, is made the protrusion 2322 of its protrusion 2526 and the first driving gear 232
And the protrusion 2462 of spacer 246 does not engage, i.e. sleeve part 252' and the first driving gear and the second driving gear are de-
From engagement, so the cutter of hammer drill does not export any rotary motion.Sleeve part 252' protrusion 2522' and oscillation bearing 222''s is convex
Portion 2222' is not also engaged, i.e., sleeve part 252' is also disengaged with oscillation bearing 222', so hammer drill cannot export hammering at this time
Movement.Hammer drill at this time is in the idle mode in middle bit pattern.
As an alternative, the hammer drill that the hammer drill in Figure 11 c is different from Figure 11 a, 11b, which is only that, uses variant slightly
Sleeve part 252 ", the protrusion 2522 " of sleeve part 252 " is more longer than the axial length of the protrusion 2522' of sleeve part 252',
So the protrusion 2522 " of sleeve part 252 " is engaged to the protrusion of oscillation bearing 222' on position identical with Figure 11 b
2222', i.e. sleeve part 252' are engaged with oscillation bearing 222', so hammer drill can export hammering movement at this time.Hammer drill at this time
Hammer mode in middle bit pattern.
Configuration shown in Figure 11 a, 11b is returned to, next, sleeve part 252' is moved farther leftward as in Figure 11 d
Its protrusion 2526 is set to be joined to the protrusion 2462 of spacer 246, i.e. sleeve part 252' connects with spacer 246 and the second driving gear
It closes, so the cutter of hammer drill exports low-speed rotation.Sleeve part 252' protrusion 2522' is still convex with oscillation bearing 222' simultaneously
Portion 2222' engagement, i.e., sleeve part 252' is engaged with oscillation bearing 222', so hammer drill still is able to output hammering movement.At this time
Hammer drill is in low speed rotation hammer mode.
Figure 12 a-12d shows the hammer drill of third preferred embodiment according to the present invention.In the present embodiment, hammer drill is set
There are four operation modes for meter, are middle bit pattern (the present embodiment shown in high speed drill mode, Figure 12 b shown in Figure 12 a respectively
Illustrate only idle mode), low speed hammer drill mode shown in low speed drill jig formula and Figure 12 d shown in Figure 12 c.In this reality
It applies in example, the axial length of the protrusion of oscillation bearing is considerably reduced, so that the hammer drill in the present embodiment, which only has one, includes hammer
The operation mode of operation.About the other aspects of the present embodiment, previously described embodiment is please referred to.
13a-13d shows the hammer drill of the 4th preferred embodiment according to the present invention.It is shown with the embodiment of front three
Hammer drill it is different, the sleeve part 252 of the hammer drill in the present embodiment includes two component parts, and first component 252a is configured for
Oscillation bearing 222 is driven and then drives by middleware 254, second component 252b is configured for being driven in turn by middleware 254
Drive the spacer 246 of the first driving gear 232 or the second driving gear 242, first component 252a and second component 252b energy
It enough rotates independently of each other and is linked together in the axial direction by third member 252c and synchronize axial movement.
Specifically, first component 252a is formed on inner peripheral surface is configured for connecing with the protrusion 2546 of middleware 254
Close the first protrusion and be configured for the second protrusion engaged with the protrusion 2522 of oscillation bearing 222.In Figure 13 a-13d,
First protrusion and the second protrusion are configured to continuous protrusion 2522a, extend on the entire axial length of first component 252a.The
Two component 252b are formed with the third protrusion for being configured for engaging with the protrusion 2546 of middleware 254 in it on weekend
It 2522b and is configured for convex with the spacer 246 of the protrusion 2322 of the first driving gear 232 or the second driving gear 242
The 4th protrusion 2524b that portion 2462 engages.
In the high speed drill mode shown in Figure 13 a, first component 252a, second component 252b and third member 252c are constituted
Sleeve part be in the first default axial position, the protrusion 2522a of first component 252a only connects with the protrusion 2546 of middleware 254
Conjunction is engaged without the protrusion 2222 with oscillation bearing 222, and the third protrusion 2522b of second component 252b is convex with middleware 254
Portion 2546 engages and the 4th protrusion 2524b is engaged with the protrusion 2322 of the first driving gear 232.
In the hammer mode shown in Figure 13 b, sleeve part is in the second default axial position, the protrusion of first component 252a
2522a is engaged with the protrusion 2546 of middleware 254 and is engaged with the protrusion of oscillation bearing 222 2222, second component 252b's
Third protrusion 2522b engaged with the protrusion 2546 of middleware 254 and the 4th protrusion 2524b not with the first driving gear 232
Protrusion 2322 and any one engagement of the protrusion of spacer 246 2462.
In the low speed hammer drill mode shown in Figure 13 c, sleeve part is in third and presets axial position, first component 252a's
Both protrusion 2522a is engaged with the protrusion 2222 of the protrusion 2546 of middleware 254 and oscillation bearing 222, second component
The third protrusion 2522b of 252b engaged with the protrusion 2546 of middleware 254 and the 4th protrusion 2524b and spacer 246 it is convex
Portion 2462 engages.
In the low speed drill jig formula shown in Figure 13 d, sleeve part is in the 4th default axial position, and first component 252a's is convex
Portion 2522a is only engaged with the protrusion 2222 of oscillation bearing 222 but is not engaged with the protrusion 2542 of middleware 254, i.e., do not transmit and
From the rotation of jackshaft 210, so hammering operation is not exported, third protrusion 2522b and the middleware 254 of second component 252b
Protrusion 2546 engages and the 4th protrusion 2524b is engaged with the protrusion 2462 of spacer 246, so the transmission component 20 of hammer drill
Only export low-speed rotation.
Comprehensive aforementioned four embodiment it is found that by reasonably select oscillation bearing outer peripheral surface on protrusion, sleeve part or
Any one in the protrusion of the protrusion of its component parts, the protrusion of the middleware of the second driving gear and the first driving gear or a few persons
Size in the axial direction, can obtain at least two operation modes of hammer drill, can obtain as needed three, four or
Five operation modes.In addition, it is still the structure or size of the protrusion by being appropriately arranged on oscillation bearing, it can be by hammer drill
Middle bit pattern is set as any of idle mode or hammer mode.
It is above-mentioned to describe by reference to attached drawing including at least high speed drill operation mode, low speed hammer drill operation mode and middle position mould
The hammer drill of formula, this technical purpose realized by only including the transmission device an of jackshaft and clutch part, structure design and
Manufacture assembling is all relatively simple.
There is also another technical advantages for structure of the invention: the second quilt of i.e. above-mentioned second revolving speed transmission component 240
Moving gear 244 is not directly connectcted to hammer pipe 110, is engaged to the first driven gear of the first revolving speed transmission component 230
234, to drive hammer pipe 110 with the second low speed rotation via the connection between the first driven gear 234 and hammer pipe 110.The
One and second driven gear 234 and 244 and hammer pipe 110 rotated jointly around the another of the central axis for being parallel to jackshaft 210
Axis rotation.
Specific as shown in FIG. 14 and 15, the first driven gear 234 is passive in the direction second perpendicular to common rotation axis
The side of gear 244 is formed with the protruding portion 2342 extended towards the first driven gear 234, correspondingly, the second driven gear 244
The recess portion for receiving protruding portion 2342 is formed in the side of the first driven gear 234 of direction perpendicular to common rotation axis
2442, the second driven gear 244 is by direction 234 Elastic pusher of the first driven gear, so that 234 He of the first and second driven gears
244 can be disconnected to engagement by protruding portion 2342 and recess portion 2442.
Advantageously, protruding portion 2342 is tapered on the projection direction far from the first driven gear 234, and is formed with and is suitable for inciting somebody to action
Protruding portion 2342 is inducted into the inclination in recess portion 2442 and extends guiding surface 2344, and correspondingly, recess portion 2442 is also formed with matching
The chip extensional surface 2444 of conjunction.These inclined surfaces also have under the low speed hammer drill operation mode of hammer drill, when the knife of hammer drill
Tool makes first and second passively when suffering from the resistance more than a certain predetermined value, when i.e. hammer pipe 110 is encountered more than predetermined resistance square
Engagement self-detaching function between gear 234 and 244, this make rotary motion from the second revolving speed transmission component 240,
Or the rotary motion from driving motor is no longer transferred to hammer pipe 110, to protect hammer drill not damaged.
The present invention is not only applicable to the hammer drill in diagram, but is suitable for all output spinning movements and hammering action
Electric tool.
The present invention has been based on several preferred embodiments and is shown and described, but the present invention is not limited to show in figure
The details that is outlined above of sum.On the contrary, can be with without departing from the spirit and scope limited by appended claims
It carry out various modifications or makes a variation.
Claims (16)
1. a kind of electric tool, including providing the driving assembly of rotary motion；Spinning movement component comprising rotated by driving
And the hammer pipe (110) for driving the cutter of electric tool to rotate together；It moves back and forth in hammer pipe (110) and hammers cutter
Hammering action component；And the rotary motion of the driving component is changed into rotary motion and the institute of the spinning movement component
The transmission component of at least one of reciprocating motion for beating action component is stated, the transmission component includes:
By the jackshaft (210) that the driving component drives and rotates, the jackshaft (210) limits axial direction and vertical
In the circumferential direction of the axial direction；
It impacts transmission component (220), can be disconnected to the jackshaft (210) and engage, and when engaging by jackshaft
(210) rotary motion, which is transferred to the hammering action component, makes its reciprocating motion；With
First revolving speed transmission component (230) and the second revolving speed transmission component (240), can break with the jackshaft (210) respectively
It engages with opening, and the rotary motion of jackshaft (210) is transferred to hammer pipe (110) when engaging, make hammer pipe (110) respectively
With the rotation of the first and second revolving speeds；
Wherein, the electric tool has following operation mode: first operator scheme, wherein the jackshaft (210) is by connecing
It closes and drives the first revolving speed transmission component (230) but do not engage because without driving the second revolving speed transmission component (240) and impact to pass
Dynamic component (220)；Second operator scheme, wherein the jackshaft (210) does not engage because without driving the first revolving speed transmission component
(230) but pass through both engagement the second revolving speed transmission component (240) of driving and impact transmission component (220).
2. a kind of electric tool, including providing the driving assembly of rotary motion；Spinning movement component comprising rotated by driving
And the hammer pipe (110) for driving the cutter of electric tool to rotate together；It moves back and forth in hammer pipe (110) and hammers cutter
Hammering action component；And the rotary motion of the driving component is changed into rotary motion and the institute of the spinning movement component
The transmission component of at least one of reciprocating motion for beating action component is stated, the transmission component includes:
By the jackshaft (210) that the driving component drives and rotates, the jackshaft (210) limits axial direction and vertical
In the circumferential direction of the axial direction；
It impacts transmission component (220), can be disconnected to the jackshaft (210) and engage, and when engaging by jackshaft
(210) rotary motion, which is transferred to the hammering action component, makes its reciprocating motion；With
First revolving speed transmission component (230) and the second revolving speed transmission component (240), can break with the jackshaft (210) respectively
It engages with opening, and the rotary motion of jackshaft (210) is transferred to hammer pipe (110) when engaging, make hammer pipe (110) respectively
High speed rotation and low speed rotation,
Wherein, the first and second revolving speeds transmission component (230,240) respectively includes be mounted on jackshaft (210) first
With the second driving gear (232,242) and can drive hammer pipe (110) rotation the first and second driven gears (234,244),
First driven gear (234) is designed to circumferentially be joined to hammer pipe (110) synchronous rotation, second driven gear
(244) it can be disconnected to and be joined to the first driven gear (234) and drive hammer pipe (110) via the first driven gear (234)
Rotation.
3. electric tool according to claim 2, wherein the electric tool includes
First operator scheme, wherein the jackshaft (210) passes through engagement driving the first revolving speed transmission component (230) but not
Engagement is because without driving the second revolving speed transmission component (240) and impact transmission component (220)；And second operator scheme, wherein institute
Jackshaft (210) is stated not engage because without driving the first revolving speed transmission component (230) but passing by engagement the second revolving speed of driving
Both dynamic component (240) and impact transmission component (220).
4. electric tool according to claim 1 or 3, wherein the electric tool also has in operations described below mode
At least one:
Third operation mode, wherein the jackshaft (210) does not engage because without driving the first revolving speed transmission component (230) and the
Two revolving speed transmission components (240), the jackshaft (210) is engageable and drives or can not engage because without driving the impact to pass
Dynamic component (220)；
4th operation mode, wherein the jackshaft (210) do not engage because without drive the second revolving speed transmission component (240) but
Both the first revolving speed transmission component (230) and impact transmission component (220) are driven by engagement；
5th operation mode, wherein the clutch part (252) passes through engagement driving the second revolving speed transmission component (240) but not
Engagement is because without driving the first revolving speed transmission component (230) and impact transmission component (220).
5. electric tool described in any one of -4 according to claim 1 further includes that synchronous with the jackshaft (210) can turn
It is dynamic but along the slidable clutch part (252) of the jackshaft (210), wherein the impact transmission component (220) and described the
One revolving speed transmission component (230) and the second revolving speed transmission component (240), which all can be disconnected to the clutch part (252), to be engaged.
6. electric tool according to claim 5, wherein the clutch part (252) is integral piece and including can be with
Impact transmission component (220) can be disconnected to engagement the first engagement features and can be with the first revolving speed transmission component (230) and the
Two revolving speed transmission components (240) can be disconnected to the second engagement features of engagement.
7. electric tool according to claim 5, wherein the clutch part (252) includes at least the first component (252a)
With second component (252b), the first component (252a) and second component (252b) can be pivotably movable with respect each other and be passed through
Third member (252c) is axially attached together to the first component synchronous can move axially with second component, described
The first component (252a) includes the first engagement features and described that can be disconnected to engagement with impact transmission component (220)
Two components (252b) include that can be disconnected to connect with the first revolving speed transmission component (230) and the second revolving speed transmission component (240)
Close the second engagement features.
8. electric tool according to claim 6 or 7, wherein
First engagement features be configured to from the radially-inwardly projection of the inner peripheral surface of clutch part (252) at least one is first convex
Portion (2522)；
The impact transmission component (220) includes being mounted on jackshaft (210) but capable of freely turning relative to jackshaft (210)
Dynamic oscillation bearing (222), the oscillation bearing (222) include that can be disconnected to the first of engagement with first protrusion (2522)
Corresponding protrusion (2222).
9. electric tool a method according to any one of claims 6-8, wherein
Second engagement features be configured to from the radially-inwardly projection of the inner peripheral surface of clutch part (252) at least one is second convex
Portion (2526),
The first and second revolving speeds transmission component (230,240) respectively includes being mounted on jackshaft (210) but can be opposite
The first and second driving gears (232,242) for being freely rotated in jackshaft (210) and hammer pipe (110) rotation can be driven the
One and second driven gear (234,244), first and second driving gear (232,242) or with described first and second
The spacer that driving gear (232,242) is fixed together respectively includes can be disconnected to engagement with second protrusion (2526)
Second corresponding protrusion.
10. electric tool according to claim 9, wherein the second driving tooth of the second revolving speed transmission component (240)
The spacer (246) taking turns a part of (242) or being fixed together with the second driving gear (242) passes through first revolving speed
The first driving gear (232) of transmission component (230) and can be disconnected to the clutch part (252) and engage.
11. electric tool according to claim 10, wherein first driven gear (234) is circumferentially joined to
Hammer pipe (110), and second driven gear (244) rotates and be can be disconnected to independently of hammer pipe (110) and is joined to the
One driven gear (234).
12. the electric tool according to claim 2 or 11, wherein first driven gear (234) includes towards second
The protruding portion (2342) of driven gear (244) projection, correspondingly the second driven gear (244) includes being suitable for receiving the protruding portion
Recess portion (2442).
13. electric tool according to claim 12, wherein the protruding portion (2342) is far from first driven gear
(234) tapered extension limits the surface that inclination extends, and it is opposite with the surface that the inclination extends that the recess portion (2442) includes
The inclination extensional surface answered.
14. electric tool according to claim 1 to 13, wherein the electric tool further includes in the hammer
Pipe (110) disconnects the guarantor of the engagement of the second revolving speed transmission component (240) and hammer pipe (110) when encountering the moment of resistance beyond predetermined value
Protect mechanism.
15. the electric tool according to any one of claim 5-14, wherein the electric tool further includes for making
State clutch part (252) sliding axially to switch the switch groups of the operation mode of the electric tool along the jackshaft (210)
Part, the clutch part (252) include the engagement features with the changeover module.
16. electric tool described in any one of -15 according to claim 1, wherein the electric tool is hammer drill.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710580772.0A CN109262549B (en) | 2017-07-17 | 2017-07-17 | Electric tool |
| DE102018211506.0A DE102018211506A1 (en) | 2017-07-17 | 2018-07-11 | Electrically operated tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710580772.0A CN109262549B (en) | 2017-07-17 | 2017-07-17 | Electric tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109262549A true CN109262549A (en) | 2019-01-25 |
| CN109262549B CN109262549B (en) | 2021-04-06 |
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ID=64745473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710580772.0A Active CN109262549B (en) | 2017-07-17 | 2017-07-17 | Electric tool |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109262549B (en) |
| DE (1) | DE102018211506A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1468789A2 (en) * | 2003-04-17 | 2004-10-20 | BLACK & DECKER INC. | Clutch for rotary power tool and rotary power tool incorporating such clutch |
| CN101157214A (en) * | 2007-10-30 | 2008-04-09 | 常州赛迪电气制造有限公司 | Dual-speed multifunctional electric hammer |
| CN201960550U (en) * | 2010-11-02 | 2011-09-07 | 无锡锐克电动工具有限公司 | Double-knob six-function electric hammer |
| CN102649266A (en) * | 2012-04-16 | 2012-08-29 | 制尚电器(浙江)有限公司 | Multifunctional double-speed electric hammer |
| WO2015045734A1 (en) * | 2013-09-27 | 2015-04-02 | 日立工機株式会社 | Impact tool |
| CN104994997A (en) * | 2013-03-26 | 2015-10-21 | 日立工机株式会社 | Electric tool |
-
2017
- 2017-07-17 CN CN201710580772.0A patent/CN109262549B/en active Active
-
2018
- 2018-07-11 DE DE102018211506.0A patent/DE102018211506A1/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1468789A2 (en) * | 2003-04-17 | 2004-10-20 | BLACK & DECKER INC. | Clutch for rotary power tool and rotary power tool incorporating such clutch |
| CN101157214A (en) * | 2007-10-30 | 2008-04-09 | 常州赛迪电气制造有限公司 | Dual-speed multifunctional electric hammer |
| CN201960550U (en) * | 2010-11-02 | 2011-09-07 | 无锡锐克电动工具有限公司 | Double-knob six-function electric hammer |
| CN102649266A (en) * | 2012-04-16 | 2012-08-29 | 制尚电器(浙江)有限公司 | Multifunctional double-speed electric hammer |
| CN104994997A (en) * | 2013-03-26 | 2015-10-21 | 日立工机株式会社 | Electric tool |
| WO2015045734A1 (en) * | 2013-09-27 | 2015-04-02 | 日立工機株式会社 | Impact tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109262549B (en) | 2021-04-06 |
| DE102018211506A1 (en) | 2019-01-17 |
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