CN110153959A - Handheld tool - Google Patents
Handheld tool Download PDFInfo
- Publication number
- CN110153959A CN110153959A CN201910115137.4A CN201910115137A CN110153959A CN 110153959 A CN110153959 A CN 110153959A CN 201910115137 A CN201910115137 A CN 201910115137A CN 110153959 A CN110153959 A CN 110153959A
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- CN
- China
- Prior art keywords
- percussion hammer
- cutter spindle
- transmission shaft
- guide part
- handheld tool
- 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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- 238000009527 percussion Methods 0.000 claims abstract description 536
- 230000005540 biological transmission Effects 0.000 claims abstract description 372
- 230000007246 mechanism Effects 0.000 claims abstract description 201
- 230000033001 locomotion Effects 0.000 claims abstract description 96
- 230000009194 climbing Effects 0.000 claims description 73
- 230000003116 impacting effect Effects 0.000 claims description 32
- 230000002093 peripheral effect Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 description 75
- 239000010959 steel Substances 0.000 description 75
- 230000000694 effects Effects 0.000 description 25
- 238000010586 diagram Methods 0.000 description 19
- 230000009471 action Effects 0.000 description 16
- 230000008859 change Effects 0.000 description 11
- 230000013011 mating Effects 0.000 description 11
- 238000004146 energy storage Methods 0.000 description 9
- 238000005553 drilling Methods 0.000 description 8
- 230000011218 segmentation Effects 0.000 description 7
- 230000003068 static effect Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 238000004080 punching Methods 0.000 description 6
- 125000004122 cyclic group Chemical group 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 206010058109 Hangnail Diseases 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
- B25D16/003—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
Abstract
The invention discloses a kind of handheld tools.Handheld tool includes motor, transmission shaft, hammering blow mechanism and cutter spindle.Transmission shaft is driven rotation by motor and is rotated around drive shaft axis.Hammering blow mechanism has a percussion hammer, and percussion hammer, which is sheathed on the outside of transmission shaft and can be driven by transmission shaft, to be rotated.Cutter spindle and transmission axis connection, and cutter spindle is movable relative to transmission shaft, hammering blow mechanism further includes the guide part and interval impact assembly being set on the outside of percussion hammer.When percussion hammer rotation, interval impact assembly driving percussion hammer counter-guide is moved linearly by preset path and hits cutter spindle at least one operating state.Handheld tool according to the present invention, utilize the matching relationship of gap impact assembly, percussion hammer and guide part, percussion hammer can be guided to move linearly, and percussion hammer can also hit cutter spindle, so as to realize the movement on tool spindle axis direction, and the structure setting of handheld tool is compact and structure is simple, can be convenient carrying.
Description
Technical field
The present invention relates to percussive drilling technical fields, specifically, more particularly to a kind of handheld tool.
Background technique
In percussive drilling technical field, rotating percussion mechanism is by the motor drive as driving source, to mention to drill gun
For rotating and hitting, so that rotating percussion power is intermittently transmitted to tip end tool to execute the behaviour for such as tightening screw etc
Make.In the related technology, by installing active impact structure on common drill gun to form impact drill mode, this mode is usually made
Excessive at the whole length of drill gun, structure is complicated.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention proposes a kind of hand
Tool is held, the handheld tool has the advantages that structure is simple, work efficiency is high.
The present invention provides a kind of technical solution: a kind of handheld tool, including motor, and cutter spindle is driven by the motor
The transmission shaft of rotation, and the hammering blow mechanism of axial impact can be provided to the cutter spindle；Hammering blow mechanism packet
Include can relative rotation percussion hammer and guide part, and the accumulating mechanism abutted with the percussion hammer, the percussion hammer and the guide part
One of on be provided with curved surface guide portion, be provided with bridgeware on another of the percussion hammer and guide part, hit when described
When hammer is relative to guide part rotation, the curved surface guide portion overcomes the active force court of accumulating mechanism by bridgeware driving percussion hammer
First direction movement；The accumulating mechanism drives the percussion hammer towards the second direction movement opposite with first direction to impact institute
State cutter spindle；The hammering blow mechanism includes impacting shaft, the impacting shaft can drive the percussion hammer and guide part wherein it
One rotation；The transmission shaft and the not relatively turnable connection of the impacting shaft.
Preferably, the transmission shaft is wholely set with the impacting shaft.
Preferably, the transmission shaft selectively connection with percussion hammer rotation.
Preferably, the first clutch part is equipped between the transmission shaft and the percussion hammer, first clutch part is actively set
It sets on the transmission shaft and the percussion hammer one of both, another of the transmission shaft and the percussion hammer are equipped with the first receiving
Portion；The cooperation of first clutch part and first receiving portion can be realized the transmission shaft and the rotation of the percussion hammer connects
Connect, first clutch part and first collecting part from when, the transmission shaft can be relatively rotated with the percussion hammer.
Preferably, the cutter spindle is wholely set with the impacting shaft.
Preferably, the cutter spindle is selectively rotated with the percussion hammer and is connected.
Preferably, the second clutch part is equipped between the cutter spindle and the percussion hammer, second clutch part is actively
In the cutter spindle and the percussion hammer one of both, another of the cutter spindle and the percussion hammer are equipped with for setting
Two receiving portions；The cooperation of second clutch part and second receiving portion can be realized the cutter spindle and the percussion hammer
Rotation connection, second clutch part and second collecting part from when, the cutter spindle and the percussion hammer opposite can turn
It is dynamic.
Preferably, the percussion hammer surrounds the cutter spindle, transmission shaft and impacting shaft at least one plane.
Preferably, the guide part surrounds the percussion hammer at least one plane.
Preferably, the percussion hammer is equipped with the striking face towards the cutter spindle, and the striking face can be in impact process
In contacted with the cutter spindle, the striking face is than the curved surface guide portion closer to the rotation axis of the cutter spindle.
Preferably, the guide sleeve is set to the outside of the percussion hammer, and the curved surface guide portion is arranged in the guide part
Inner peripheral surface on, the bridgeware is arranged on the outer peripheral surface of the percussion hammer.
Preferably, the percussion hammer have the end face towards the cutter spindle, the striking face than the end face closer to
The free end of the cutter spindle.
Preferably, the curved surface guide portion include several climbing sections and it is corresponding with the climbing section fall section, when
When the bridgeware passes through the climbing section, the bridgeware drives the percussion hammer to overcome the active force of the accumulating mechanism towards the
The movement of one direction；When falling section described in the bridgeware passes through, the accumulating mechanism drive the percussion hammer towards and first direction
Opposite second direction movement is to impact the cutter spindle；The quantity one of the quantity of the bridgeware and the climbing section
It causes.
Preferably, the accumulating mechanism is set as elastic component.
The present invention also provides another technical solutions: a kind of handheld tool, including motor accommodate the shell of the motor
Body, cutter spindle by the transmission shaft of motor driving rotation, and can provide the hammer of axial impact to the cutter spindle
Beater mechanism；The hammering blow mechanism include can relative rotation percussion hammer and guide part, rotatably connect with the transmission shaft
Impacting shaft and the accumulating mechanism abutted with the percussion hammer are provided with curved surface on one of the percussion hammer and the guide part
It is provided with bridgeware on another of guide portion, the percussion hammer and guide part, under conflicting model, the percussion hammer and the guide part
One of them is rotated by impacting shaft driving is relatively wherein another, and the curved surface guide portion is driven by bridgeware
Percussion hammer overcomes the active force of accumulating mechanism to move along the central axis of cutter spindle towards first direction；The accumulating mechanism drives institute
Percussion hammer is stated to move to impact the cutter spindle towards the second direction opposite with first direction along the central axis of cutter spindle；
Percussion hammer linear motion ground bearing is on the housing.
Preferably, the guide sleeve is under the outside of the percussion hammer, conflicting model, the relatively described shell of the guide part
Body fixed setting, the percussion hammer is driven by the impacting shaft to be rotated relative to the guide part, percussion hammer linear motion ground bearing
On the inner peripheral surface of the guide part.
Preferably, the curved surface guide portion is set in the inner circumferential of the guide part, and the adapter is set to described hit
On the outer peripheral surface of hammer.
Preferably, the transmission shaft is wholely set with the impacting shaft.
The additional aspect and advantage of the technical solution will be set forth in part in the description in the present invention, partially will be under
Become obvious in the description in face, or practice through the invention is recognized.
The present invention also provides another technical solutions: a kind of handheld tool, comprising: shell；Motor；Transmission shaft, by
The motor driving is simultaneously rotated around the drive shaft axis；Cutter spindle, the cutter spindle are used for connecting tool head, and described
Cutter spindle can be driven by the transmission shaft to be rotated；Hammering blow mechanism, the hammering blow mechanism have a percussion hammer, the percussion hammer
It is sheathed on the outside of at least one of the transmission shaft and the cutter spindle and can be driven by the transmission shaft and rotated；
The hammering blow mechanism further includes the guide part being sheathed on the outside of the percussion hammer, the cutter spindle via an axial force effect
The second position can be moved to by first position, when the cutter spindle in the second position, the percussion hammer can be by described
Transmission shaft driving is rotated and can be moved relative to the guide part by preset path, thus edge at least one operating state
The axis of the cutter spindle hits the cutter spindle, when the cutter spindle at the first position, the transmission shaft
The percussion hammer can not be driven to rotate.
Preferably, the cutter spindle includes the connecting pin with the transmission axis connection, and is connect with the tool heads
Output end, when the cutter spindle bear axial force direction by the output end to the connecting pin when, the cutter
Main shaft is allowed hand over to the first position being coupled relative to the transmission shaft.
Preferably, the cutter spindle includes the connecting pin with the transmission axis connection, and is connect with the tool heads
Output end, when the cutter spindle bear axial force direction by the connecting pin to the output end when, the cutter
Main shaft switches to the second position relative to transmission shaft mating.
Preferably, the handheld tool further includes mode tuning mechanism, and the mode tuning mechanism is operationally first
It is converted between mode state and second mode state, when being located at the first mode state, the cutter spindle can be relative to
The transmission shaft switches between the first position and the second position state；When positioned at the second mode state, institute
It states cutter spindle and axially abuts with the mode tuning mechanism to limit the cutter spindle from the second position and switch to institute
State first position.
Preferably, the handheld tool further includes mode tuning mechanism, and the mode tuning mechanism is operationally first
Switch between mode state and second mode state, when being located at the first mode state, the guide part is fixed on the shell
Body, the percussion hammer can be moved in rotation along the guide part by preset path to hit the cutter spindle；Positioned at described
When second mode state, the guide part is rotatablely arranged at the shell, and the percussion hammer to the cutter spindle without punching
It hits.
Preferably, one end that the transmission shaft is connected with the connecting pin is driving end, the connecting pin and the transmission
One of end is equipped with axial hole, another end is protruded into the axial hole.
Preferably, spline is equipped between the inner wall of the axial hole and the outer wall of another end, to realize
It states and is axially movable but does not connect rotatably between transmission shaft and the cutter spindle.
Preferably, the spline of another end forms radial groove, and the outer wall of the axial hole is equipped with
Radial hole, the handheld tool further include the steel ball to connect the transmission shaft Yu the percussion hammer, the radial hole with it is described
Radial groove position is corresponding, and the steel ball is moved along the radial hole into the radial groove, and disengages with the percussion hammer；When
When the cutter spindle moves to the first position relative to the transmission shaft, the radial hole and the radial groove position
It is staggered, the steel ball and is connect along the counter motion of the radial hole with the percussion hammer.
Preferably, the hammering blow mechanism further includes interval impact assembly；When the transmission shaft drives the percussion hammer rotation
When, the interval impact assembly forces the relatively described guide part of the percussion hammer to move linearly by preset path and at least one
The cutter spindle is hit in operating status.
Preferably, the interval impact assembly include the accumulating mechanism abutted with percussion hammer and be set to the guide part with
Bridgeware and curved surface guide portion between percussion hammer.
Preferably, the bridgeware is located at the guide part and the percussion hammer alternative one, and the curved surface guide portion is located at
Both the guide part and the percussion hammer it is another.
Preferably, the bridgeware is arranged to steel ball, and the curved surface guide portion is arranged to cam surface or cam path.
Preferably, the accumulating mechanism is arranged to elastic component.
The additional aspect and advantage of the technical solution will be set forth in part in the description in the present invention, partially will be under
Become obvious in the description in face, or practice through the invention is recognized.
The present invention also provides another technical solutions: a kind of handheld tool, comprising: motor, the rotation of the motor
Direction includes first direction and second direction opposite to the first direction；Transmission shaft, the transmission shaft is by the motor
Driving rotation；Cutter spindle, is used for connecting tool head, and the cutter spindle is movably connected with the transmission shaft；Hammering blow
Mechanism has a percussion hammer, and the percussion hammer is sheathed on the outside of the transmission shaft or the cutter spindle, and can be by the transmission
Axis driving rotation, the hammering blow mechanism further includes the guide part being set on the outside of the percussion hammer；The hammering blow mechanism is also wrapped
The interval impact assembly between the percussion hammer and the guide part is included, the interval impact assembly includes being located at the percussion hammer
The curved surface guide portion of one of outer wall or the guide part inner wall, and positioned at another bridgeware of the two, the handheld tool
It further include the impact ring for being non-rotatably fixed to shell, the impact ring is equipped with the first end tooth, and the guide part is equipped with
It can be with the second end tooth of the first end tooth engagement, when the motor is rotated along the first direction, first end tooth
The guide part rotation is limited by second end tooth engaged, the bridgeware is along the curved surface guide portion by default
Direction movement makes the percussion hammer hit the cutter spindle at least one operating state；When the motor is along the second party
To when rotation, second end tooth and the guide part are under the driving of the motor relative to described first engaged
End tooth rotation.
Preferably, first end tooth includes several first teeth, and first teeth include guide section and backstop section, institute
It states guide section to connect with the free end of the backstop section, second end tooth is made of several second teeth, when the motor edge
When the first direction rotates, second teeth move to the guide section by the backstop section, and the backstop section abuts institute
The second teeth are stated, so that the guide part can not rotate；When the motor is rotated along the second direction, second tooth
When tooth moves to the backstop section by the guide section, second teeth can be moved along the guide section, thus described
Guide part is rotated relative to first end tooth.
Preferably, the guide section and the backstop section are successively spaced setting along the circumferential direction of first end tooth, and described
Backstop section is parallel to the axis of the transmission shaft.
Preferably, when second teeth move to the guide section by the backstop section, second teeth with it is described
The side that backstop section abuts is parallel to the backstop section.
Preferably, the impact ring can be axially moveable, to realize first end tooth and the second end tooth engagement
Or separation, when first end tooth is separated with second end tooth, the guide part is rotated by the motor, institute
It states handheld tool and is in non-percussion mode.
Preferably, the hammering blow mechanism has a disengagable clutch, and the clutch is arranged for
Transmit rotary motion.
Preferably, the clutch is configured to be closed by one via the power of cutter spindle transmitting.
Preferably, the clutch is between the transmission shaft and the percussion hammer, including is set to the transmission shaft
With the clutch part of the percussion hammer alternative one, and it is set to another receiving portion of both the transmission shaft and the percussion hammer,
When the mode tuning mechanism is located at the first position, the clutch part is engaged with the receiving portion, the mode tuning machine
When structure is located at the second position, the clutch part and the collecting part from.
Preferably, the clutch part setting glomeration or column, the receiving portion are arranged to groove body.The technology in the present invention
The additional aspect and advantage of scheme will be set forth in part in the description, and partially will become apparent from the description below, or
Practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of handheld tool according to an embodiment of the present invention；
Fig. 2 is the partial structurtes explosive view of handheld tool according to an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the mode tuning mechanism of handheld tool according to an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the mode tuning mechanism of handheld tool according to an embodiment of the present invention；
Fig. 5 is the section partial structural diagram of handheld tool according to an embodiment of the present invention；
Fig. 6 is the schematic enlarged-scale view in Fig. 5 at A；
Fig. 7 is the schematic enlarged-scale view in Fig. 5 at B；
Fig. 8 is the schematic enlarged-scale view in Fig. 5 at C；
Fig. 9 is the section partial structural diagram of handheld tool according to an embodiment of the present invention；
Figure 10 is the schematic enlarged-scale view in Fig. 9 at D；
Figure 11 is the structural schematic diagram of the guide part of handheld tool according to an embodiment of the present invention；
Figure 12 is the cross section structure schematic diagram of the guide part of handheld tool according to an embodiment of the present invention；
Figure 13 is the section partial structural diagram of handheld tool according to an embodiment of the present invention；
Figure 14 is the schematic enlarged-scale view in Figure 13 at E；
Figure 15 is the schematic enlarged-scale view in Figure 13 at F；
Figure 16 is the partial structurtes explosive view of handheld tool according to an embodiment of the present invention；
Figure 17 is the section partial structural diagram of handheld tool according to an embodiment of the present invention；
Figure 18 is the section partial structural diagram of handheld tool according to an embodiment of the present invention；
Figure 19 is the partial structurtes explosive view of handheld tool according to an embodiment of the present invention；
Figure 20 is the partial structural diagram of handheld tool according to an embodiment of the present invention；
Figure 21 is the cross section structure schematic diagram of handheld tool according to an embodiment of the present invention；
Figure 22 is the schematic enlarged-scale view in Figure 21 at G；
Figure 23 is the cross section structure schematic diagram of handheld tool according to an embodiment of the present invention；
Figure 24 is the schematic enlarged-scale view in Figure 23 at H；
Figure 25 is the section partial structural diagram of handheld tool according to an embodiment of the present invention；
Figure 26 is the section partial structural diagram of handheld tool according to an embodiment of the present invention；
Figure 27 is the cross section structure schematic diagram of handheld tool according to an embodiment of the present invention；
Figure 28 is the partial structural diagram of handheld tool according to an embodiment of the present invention；
Figure 29 is the partial structural diagram of handheld tool according to an embodiment of the present invention；
Figure 30 is the partial structural diagram of handheld tool according to an embodiment of the present invention.
Figure 31 is the partial sectional view of handheld tool according to an embodiment of the present invention.
Appended drawing reference:
Handheld tool 1,
Transmission shaft 10, baffle 100, through hole 110, cavity 120, driving end 130, flat 140,
Hammering blow mechanism 20, percussion hammer 200, receiving portion 201, groove body 201a, embedded groove 202, mounting groove 203,
Guide part 210, holding tank 211, the first groove 212, lug boss 212a, tip 212a1, striking face 2001,
Clutch 220, clutch part 221,
Interval impact assembly 230, accumulating mechanism 231, bridgeware 232, curved surface guide portion 233,
Climb section 233a, falls a section 233b,
Cutter spindle 30, external screw thread 300, first segment 310, second segment 320, third section 330, convex ribs 340, groove 350, axis
To
Hole 360, spline 370, connecting pin 380, output end 390,
Mode tuning mechanism 40 impacts receiving unit 400, first surface 401, second surface 402, third surface 403, step
Face 404,
Only pressure ring 410, retaining part 411, fixed section 411a, linkage section 411b cooperate section 411c,
Mode tuning button 420, flange 421, channel 422,
Impact switching ring 430, the second groove 431, lead segment 431a, only support segment 431b, coordinating block 432, bolster 440,
Mode selector button 450, guiding block 451, guide ramp 451a,
Collet 50, threaded hole 500, motor 60, return unit 70, shell 80, reversed screw 90,
Impact ring 11a, the first end tooth 12a, the first teeth 121a, guide section 121b, backstop section 121c, the second end tooth
213a, the second teeth 2131a.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.In addition, limit
There is the feature of " first ", " second " to can explicitly or implicitly include one or more of the features surely.Of the invention
In description, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Embodiment 1
As shown in Fig. 1-Figure 26, handheld tool 1 according to an embodiment of the present invention, including motor 60, transmission shaft 10, hammering blow
Mechanism 20 and cutter spindle 30.
Specifically, as shown in Fig. 2, Fig. 5, Fig. 9, Figure 13, Figure 17-Figure 18, Figure 21, Figure 23 and Figure 25-Figure 26, motor 60
Transmission shaft 10 can be driven to rotate, and transmission shaft 10 can be rotated around the axis of transmission shaft 10.Hammering blow mechanism 20 includes percussion hammer
200, percussion hammer 200 is sheathed on the outside of transmission shaft 10, and percussion hammer 200 can be driven by transmission shaft 10 and be rotated.It is understood that
Motor 60 is connect with transmission shaft 10, and " connection " mentioned herein can refer to that motor 60 is directly connected to transmission shaft 10, for example,
The output end of motor 60 can be directly connected to the end of transmission shaft 10, and " connection " may also mean that between motor 60 and transmission shaft 10
It connects in succession, for example, motor 60 can be directly connected to intermediate transmission component, then direct by intermediate transmission component and transmission shaft 10
Connection.
Motor 60 can drive transmission shaft 10 to rotate, i.e., motor 60 can drive transmission shaft 10 to rotate around center axis thereof.
Percussion hammer 200 can be externally fitted to the outer wall of transmission shaft 10, and percussion hammer 200 can be cooperatively connected with transmission shaft 10, and transmission shaft 10 can be into
Percussion hammer 200 is driven to one step to rotate around the axis of transmission shaft 10.It should be noted that " connection " mentioned herein can be
Refer to that percussion hammer 200 is directly connected to transmission shaft 10, may also mean that percussion hammer 200 is indirectly connected with transmission shaft 10.Such as Fig. 5-Fig. 9 institute
Show, handheld tool 1 further includes cutter spindle 30, and 30 one end of cutter spindle is connect with transmission shaft 10, and the other end is to fastening means
Head, and cutter spindle 30 is movable relative to transmission shaft 10, cutter spindle 30 and transmission shaft 10 are movably connected together, example
Such as, cutter spindle 30 can be moved relative to transmission shaft 10 along the axis direction of transmission shaft 10, and not connected rotatably
It connects namely cutter spindle 30 is driven by transmission shaft 10 and rotated.It should be noted that as shown in figure 27, the percussion hammer in the present embodiment
200 can also be sheathed on the outside of cutter spindle 30 or a part is sheathed on 30 outside of cutter spindle, and a part is sheathed on transmission
The outside of axis 10.
As shown in Fig. 2, Fig. 5-Figure 13, hammering blow mechanism 20 further includes the guide part 210 for being set to 200 outside of percussion hammer, with
And interval impact assembly 230.When percussion hammer 200 rotates, interval impact assembly 230 guides 200 counter-guide 210 of percussion hammer by pre-
If path moves linearly and hits cutter spindle 30 at least one operating state.In other words, hammering blow mechanism 20 includes
Percussion hammer 200, guide part 210 and interval impact assembly 230, guide part 210 are coated at the periphery wall of percussion hammer 200.Preferably, it is
Percussion hammer 200 is set to generate required hammer force when hitting cutter spindle 30, the weight of the percussion hammer 200 is more than or equal to
The 10% of the sum of 30 weight of collet 50 and cutter spindle in order to make the quality of tool will not be too heavy, while keeping the structure of complete machine tight
It gathers, it is preferable that the weight of the percussion hammer 200 is less than or equal to the 60% of the sum of 30 weight of collet 50 and cutter spindle.It is more highly preferred to
Ground, the weight of the percussion hammer 200 are less than or equal to the 35% of the sum of 30 weight of collet 50 and cutter spindle.
As shown in Figure 25-Figure 26, the mode that cutter spindle 30 is connected through a screw thread is fixedly connected with collet 50, specifically
Ground, in the present embodiment, cutter spindle 30 are equipped with external screw thread 300 close to one end of collet 50, are equipped with and outer spiral shell inside collet 50
The threaded hole 500 that line 300 is coupled, cutter spindle 30 and collet head 50 are attached by external screw thread 300 with threaded hole 500.It needs
It is noted that motor 60 drive cutter spindle 30 can not only be rotated in a first direction (forward direction), but also can along with first direction
(reversed) rotation of opposite second direction, is threadedly coupled between cutter spindle 30 and collet 50 disengages at work in order to prevent,
Reversed screw 90 is additionally provided between collet 50 and cutter spindle 30, " reversed screw 90 " refers to, the hand of spiral on screw herein
It is opposite with the hand of spiral of above-mentioned external screw thread 300.In this kind of connection type, since percussion hammer 200 is to the hammer force of tool heads 20,
It needs to pass to tool heads namely percussion hammer 200 via reversed screw 90 and hammer force is passed into cutter spindle 30, then pass through knife
Tool main shaft 30 passes to reversed screw 90, and hammer force is finally passed to tool heads by reversed screw 90 again, thus, by hitting
The hammer force loss that hammer 200 passes to tool heads is larger.
Therefore, the present invention also provides another connection type of cutter spindle 30 and collet 50, referring to fig. 21, it compares
Connection type between above-mentioned cutter spindle 30 and collet 50 eliminates reversed screw 90 in this kind of connection type, passes through
Binder is coated between external screw thread 300 and threaded hole 500 to prevent cutter spindle 30 from disengaging at work with tool heads, together
When, 30 front of cutter spindle has protrusion (not marking in figure), for abutting tool heads, so as to impact directly by cutter
Main shaft 30 passes to tool heads, reduces energy loss when impact.
When percussion hammer 200 rotates, interval impact assembly 230 can control the motion path of percussion hammer 200, and the motion path
Not only percussion hammer 200 can have been made to rotate around the circumferential direction of transmission shaft 10, but also percussion hammer 200 can be made along the axis of transmission shaft 10
Direction is mobile, so that percussion hammer 200 hits cutter spindle 30, and then completes cutter spindle 30 relative to transmission shaft 10
It is mobile.
Handheld tool 1 according to an embodiment of the present invention, by setting guide part 210 and interval impact assembly 230, between utilization
The matching relationship of impact assembly of having a rest 230, percussion hammer 200 and guide part 210 can guide percussion hammer 200 and move linearly, and percussion hammer
200 can also hit cutter spindle 30, so as to realize the movement on 30 axis direction of cutter spindle, so that cutter spindle 30
When drilling on environment component (such as metope or plate), cutter spindle 30 forms impact force to environment component, so as to improve
The drilling efficiency of handheld tool 1 can be with moreover, the structure setting of the handheld tool 1 of the embodiment of the present invention is compact and structure is simple
It is convenient for carrying.
As shown in Fig. 2, Fig. 5, Fig. 7 and Fig. 9-Figure 12, according to some embodiments of the present invention, interval impact assembly 230 is wrapped
Include the accumulating mechanism 231 abutted with percussion hammer 200 and the bridgeware being set between guide part 210 and percussion hammer 200 232 and curved surface
Guide portion 233.Interval impact assembly 230 further includes accumulating mechanism 231, and bridgeware 232 and curved surface guide portion 233 are respectively positioned on guiding
Between part 210 and percussion hammer 200, and one end of accumulating mechanism 231 is abutted with percussion hammer 200.Thus, it is possible to be guided by constructing curve
The concrete shape in portion 233, to guide the motion profile of bridgeware 232, bridgeware 232 can be realized with percussion hammer 200 and be linked, percussion hammer
200 move under the action of bridgeware 232 along the track of curved surface guide portion 233.
Further, as shown in Figure 13 and Figure 17-Figure 18, baffle 100,100 housing of baffle can be equipped on transmission shaft 10
In the periphery wall of transmission shaft 10, accumulating mechanism 231 is between percussion hammer 200 and baffle 100, and accumulating mechanism 231 is far from percussion hammer 200
One end can cooperate with baffle 100.After percussion hammer 200 is moved a certain distance towards accumulating mechanism 231, percussion hammer 200 and baffle
100 can be with compress energy storage mechanism 231.Accumulating mechanism 231 can form motive force to percussion hammer 200 as a result,.Certainly, for accumulation of energy
The axial limited way of mechanism 231 can also use other structures, and details are not described herein again.
The axial limiting part of accumulating mechanism 231 is in the present embodiment baffle 100, in the present invention by baffle 100 with
Transmission shaft 10 is designed as being fixedly connected, it is preferred to employ interference fit can prevent tool from occurring under non-percussion mode
Cutter spindle in the axial direction back and forth play the phenomenon that, improve the service life of mechanism and the operating experience of user.
The phenomenon that cutter spindle axial float described herein, through researching and analysing, it was found that the basic original that the phenomenon occurs
Cause is based on the basic reason, and the invention proposes above-mentioned technical proposal, i.e. baffle 100 is fixedly connected with transmission shaft 10, below will
The basic reason and above-mentioned technical proposal that illustrate cutter spindle axial float are able to solve the basic principle of the problem.
The phenomenon that cutter spindle axial float described herein, when referring to that tool is run under non-percussion mode, cutter
The phenomenon that main shaft moves back and forth in the axial direction is researched and analysed, it is found that the axial float of cutter spindle is due to the company of may be selected
The clutch part 221 for connecing percussion hammer 200 and transmission shaft 10 radially passes in and out caused by receiving portion 201 back and forth.Specifically, due to gear
It is clearance fit between plate 100 and transmission shaft 10, so that when transmission shaft 10 rotates, baffle 10 and spring i.e. accumulating mechanism
231 and percussion hammer 200 do not turn in direction of rotation.That is, transmission shaft 10 is with cutter master under non-percussion mode
When axis 30 is rotated, percussion hammer 200 remain stationary motionless in a rotational direction.During non-percussion pattern further, operator
Slight pushing is had to cutter spindle 30, so that cutter spindle 30 is moved backward some distances in the axial direction, and then make clutch
Part 221 is radially partly forced out, and when the transmission shaft 10 of rotation drives clutch part 221 to continue rotation, is in rotation status
Clutch part 221 be extruded during, when encountering the inner wall of static percussion hammer 200, can be applied power rebound return, i.e. clutch
Part 221 can have been pushed away radially back again.Then cutter spindle 30 can continue due to slight axis downward pressure by clutch part 221
It extrudes, is then pushed back to come again, the play back and forth in radial directions of clutch part 221 can be made back and forth in this way, and then cause
The play back and forth of cutter spindle 30 in the axial direction.
To solve the above-mentioned problems, baffle 100 is designed as being fixedly connected by the present invention with transmission shaft 10, so that tool exists
During non-percussion mode operation, when transmission shaft 10 drives cutter spindle 30 to rotate, transmission shaft 10 also will drive 100 turns of baffle
It is dynamic, and then spring i.e. accumulating mechanism 231 and percussion hammer 200 can be made to rotate, so that cutter spindle 30 and percussion hammer 200
It rotates together, and speed is identical, without relative speed difference, such cutter spindle 30 is by slight axis downward pressure, by clutch
Part 221 radially squeezes out, and when clutch part 221 encounters the inner wall of percussion hammer 200, would not would not be repelled by by active force
Back, it and then solves the problems, such as the radially play back and forth of clutch part 221, and then also just solves cutter spindle 30 along axis side
The problem of to play back and forth.Guide part
As shown in Figure 11-Figure 12, in some embodiments of the invention, curved surface guide portion 233 can be formed as cyclic annular, bent
Face guide portion 233 can be surround along the circumferential direction of transmission shaft 10, and specifically, curved surface guide portion 233 may include climbing section
233a and fall a section 233b, the one end for falling section 233b is connect with the one end for the section 233a that climbs, and falls the other end court of section 233b
Extend to the other end of climbing section 233a.Further, climbing section 233a can helically line style, falling section 233b can be in straight
Line style, and fall section 233b and extend along the axis direction of transmission shaft 10.Preferably, in order to guarantee percussion hammer 200 to cutter spindle 30
Enough impact forces, and the volume compact of handheld tool 1 are formed, the climbing 233a climbs height greater than 3mm in the axial direction
And it is less than or equal to 15mm, it is preferable that climbing height is more than or equal to 4mm and is less than or equal to 8mm, it is preferable that climbing height is 5mm.
It should be noted that " climbing height " refer between the both ends of climbing section 233a 10 axis direction of transmission shaft it is axial away from
From.
When bridgeware 232 and climbing section 233a cooperation, one end direction climbing section of the bridgeware 232 from climbing section 233a
The other end of 233a rolls, and percussion hammer 200 is mobile towards baffle 100, and percussion hammer 200 and baffle 100 can be with compress energy storage mechanisms 231；
When bridgeware 232, which falls section 233b positioned at the other end and direction of climbing section 233a, to be rolled, accumulating mechanism 231 can be pushed and be hit
Hammer 200 falls towards falling section 233b close to one end of baffle 100 close to the other end of tool heads from falling section 233b, namely hits
Hammer 200 is directed away from baffle 100 and quickly falls close to the directions of tool heads, and percussion hammer 200 a part of close simultaneously hits cutter
Main shaft 30 is located at the part in 10 outside of transmission shaft, so that cutter spindle 30 is relative to transmission shaft 10 along the axis of transmission shaft 10
Direction is mobile, and percussion hammer 200 forms the hammering to cutter spindle 30 and tool heads.
Further, as shown in Fig. 7, Figure 15, the end face of the close accumulating mechanism 231 of percussion hammer 200 can be equipped with mounting groove
203, the end of accumulating mechanism 231 can be located in mounting groove 203, and the end of accumulating mechanism 231 can be with the bottom of mounting groove 203
Wall offsets.Thus, it is possible to improve the Assembly stability of accumulating mechanism 231 Yu percussion hammer 200.
As shown in figure 12, in some embodiments of the invention, curved surface guide portion 233 may include that multistage is segmented, and every section
Segmentation includes that a climbing section 233a and one falls a section 233b.Bridgeware 232 can be to be multiple, and multiple bridgewares 232 can edge
The circumferential direction of percussion hammer 200 is spaced apart.The present embodiment in order to guarantee the reasonability of 1 whole design of handheld tool, middle percussion hammer 200
Outer diameter is between 15mm-50mm, it is preferable that 200 outer diameter of percussion hammer between 20mm-40mm, climbing height be greater than 3mm and be less than etc.
In 15mm, it is preferable that climbing height is more than or equal to 4mm and is less than or equal to 8mm, it is further preferable that climbing height is 5mm.It can be with
Ground is understood, in order to guarantee that bridgeware 232 can smoothly climb, it is preferable that segments is 2 to 7, and particularly advantageously segments is
3-4, the number of segment for the section 233a that climbs in the present embodiment is preferably 3.
It should be noted that by above-mentioned introduction it is found that bridgeware 232 and curved surface guide portion 233 are located at percussion hammer 200 and guiding
Between part 210, specifically, bridgeware 232 is located at 200 alternative one of guide part 210 and percussion hammer, and curved surface guide portion 233, which is located at, to be led
To the another of 200 the two of part 210 and percussion hammer.As exemplified in figs, in other examples of the invention, bridgeware 232 can
To be located on guide part 210, curved surface guide portion 233 is located on percussion hammer 200.It is accommodated for example, the internal perisporium of guide part 210 is equipped with
Slot 211, a part of of bridgeware 232 can be located in holding tank 211, and curved surface can be equipped on the periphery wall of percussion hammer 200 and is guided
The another part in portion 233, bridgeware 232 can cooperate with curved surface guide portion 233.As exemplified in figs, of the invention another
In some examples, bridgeware 232 can be located on guide part 210, and curved surface guide portion 233 is located on percussion hammer 200.For example, guiding
The internal perisporium of part 210 is equipped with holding tank 211, and a part of of bridgeware 232 can be located in holding tank 211, outside percussion hammer 200
Curved surface guide portion 233 can be equipped on peripheral wall, the another part of bridgeware 232 can cooperate with curved surface guide portion 233.As a result,
The assembly relation of bridgeware 232, curved surface guide portion 233 and percussion hammer 200, guide part 210 may be implemented, so as to utilize conversion
The relative motion between matching relationship and bridgeware 232 and curved surface guide portion 233 between part 232 and curved surface guide portion 233, can
To realize relative motion of the percussion hammer 200 relative to guide part 210, percussion hammer 200 can along transmission shaft 10 axis direction relative to
Transmission shaft 10 is mobile.Bridgeware 232 is in the preset path that the motion profile of curved surface guide portion 233 is percussion hammer 200.
As shown in Fig. 2, Figure 16 and Figure 19, in some embodiments of the invention, steel ball is can be set into bridgeware 232,
As shown in Figure 11-Figure 12, it is preferable that in order to guarantee the intensity of steel ball, the diameter of steel ball is greater than 4mm and is less than or equal to 10mm, more
For preferably, the diameter of steel ball is more than or equal to 4mm and is less than or equal to 6mm, and the diameter of steel ball is 5mm in the present embodiment.Curved surface draws
Leading portion 233 can be set into cam surface or cam path.Cam surface or cam path can limit the active rail of steel ball as a result,
Mark, steel ball can have round and smooth outer surface, can not only reduce bridgeware in the interior activity of cam surface or cam path, steel ball
It is suitable to improve activity of the bridgeware 232 in curved surface guide portion 233 for relative motion frictional force between 232 and curved surface guide portion 233
Smooth property, and the structural strength of steel ball is big, abrasion resistance properties are good, so as to ensure the working performance of interval impact assembly 230.
It should be noted that " cam " mentioned herein can refer to that curved surface guide portion 233 protrudes from the internal perisporium of guide part 210,
Or curved surface guide portion 233 protrudes from the periphery wall of percussion hammer 200.
Further, steel ball can be that point or line contact with curved surface guide portion 233, it is to be understood that steel ball is in curved surface
In guide portion 233 during movement, it is always that a point or line contact that steel ball is contacted with curved surface guide portion 233, is conducive to subtract
Friction between few steel ball and curved surface guide portion 233.For example, the radius of curvature of cam surface can be essentially identical with the radius of steel ball
Or it is bigger, so as to improve the fitness of steel ball and cam surface, and then the Assembly stability of steel ball and cam surface is improved, it is wear-resisting
Property and service life.
As shown in Fig. 2, Figure 16 and Figure 19, in some embodiments of the invention, elasticity is can be set into accumulating mechanism 231
Part, for example, accumulating mechanism 231 can be spring or elastic rubber, thus, it is possible to simplify setting and the dress of accumulating mechanism 231
Match, the manufacturing cost of accumulating mechanism 231 can also be reduced.
As shown in Fig. 5, Fig. 8-Figure 10, Figure 13 and Figure 15, according to some embodiments of the present invention, hammering blow mechanism 20 also has
There is a disengagable clutch 220, clutch 220 is arranged for transmitting the rotation between transmission shaft 10 and percussion hammer 200
Transhipment is dynamic.It is understood that clutch 220 can cooperate with percussion hammer 200, clutch 220 can also be de- with percussion hammer 200
It opens, when clutch 220 and the cooperation of percussion hammer 200, the rotary motion of transmission shaft 10 can be passed to by clutch 220 is hit
Hammer 200, so that percussion hammer 200 be driven to rotate；When clutch 220 and percussion hammer 200 disengage, i.e. clutch 220 and percussion hammer 200
Between matching relationship release, transmission shaft 10 can rotate relative to percussion hammer 200, and percussion hammer 200 is static relative to guide part 210.
Thus, it is possible to the movement of percussion hammer 200 is controlled by clutch 220, thus control whether percussion hammer 200 hits cutter spindle 30,
And then it can control the operating mode of cutter spindle 30.
Further, clutch 220 can be configured to be closed by one via the power that cutter spindle 30 transmits, namely
(axially there is load) when tool heads are connected to operating condition, clutch 220 can be closed automatically, realized and impacted, at handheld tool 1
In impact conditions.Thus, it can be controlled by cutter spindle 30 between clutch 220 and percussion hammer 200 with the presence or absence of matching relationship
System, cutter spindle 30 can apply external force to clutch 220, to change the relationship between clutch 220 and percussion hammer 200.
Thus, it is possible to facilitate the working condition switching for changing handheld tool 1, and it is not required to other control structure.
Further, clutch 220 is operationally converted between closed state and disengaged condition, works as clutch
220 in the closure state, and ram 200 is driven by transmission shaft 10 to be rotated；When clutch 220 is in disengaged condition, ram
200 cannot be transmitted the driving of axis 10.It is understood that cutter spindle 30 can control the working condition of clutch 220, make
Clutch 220 can be engaged with percussion hammer 200 or be disengaged with percussion hammer 200, and clutch 220 can be in the effect of cutter spindle 30
Under switch between these two states.When clutch 220 is engaged with percussion hammer 200, transmission shaft 10 can drive percussion hammer 200 to revolve
Turn, when clutch 220 and the disengagement of percussion hammer 200, ram 200 cannot be transmitted the driving of axis 10.Thus, it is possible to pass through clutch
Structure 220 controls the movement of percussion hammer 200, realized automatically so as to realizing handheld tool 1 when there is loaded work piece impact function or
Into impact conditions.
As shown in Fig. 5, Fig. 8-Figure 10, Figure 13 and Figure 15, in some examples of the invention, clutch 220 includes setting
It is placed in transmission shaft 10 and 200 alternative one clutch part 221 of percussion hammer, and is set to the another of both transmission shaft 10 and percussion hammer 200
Receiving portion 201, when clutch 220 is in meshing state, clutch part 221 with 201 shape of receiving portion is matched engages, when
When clutch 220 is in disengaged condition, clutch part 221 is separated with receiving portion 201.
It is understood that clutch 220 includes clutch part 221 and receiving portion 201, in transmission shaft 10 and percussion hammer 200
One of them be equipped with clutch part 221, another be equipped with receiving portion 201.When clutch 220 is in meshing state, clutch
Part 221 and receiving portion 201 cooperate, and when clutch 220 is in disengaged condition, clutch part 221 is separated with receiving portion 201.By
This, can be by the assembly relation of clutch part 221 and receiving portion 201, to switch the working condition of clutch 220.
As shown in Fig. 5, Fig. 8-Figure 10, Figure 13 and Figure 15, in some examples of the invention, clutch part 221 be can be set
Groove body 201a can be set into glomeration or column, receiving portion 201.Spherical or column all has round and smooth outer surface, round and smooth
Outer surface has lesser frictional force in active procedure, to be easy to the state switching of clutch part 221.Receiving portion 201 is set
It is set to groove body 201a to be not only convenient for being arranged, and convenient for being cooperated with clutch part 221.For example, one of 200 internal perisporium of percussion hammer
The radial outside towards percussion hammer 200 is divided to be recessed to form receiving portion 201.Further, the bottom wall of groove body 201a can be formed as
Cambered surface, cambered surface can be recessed towards the radial outside of percussion hammer 200.As a result, groove body 201a can with wrapping portion clutch part 221, from
And the fitment stability of clutch part 221 Yu groove body 201a can be improved.
According to some embodiments of the present invention, cutter spindle 30 is axially movable but can not relatively rotate with respect to transmission shaft 10
Ground connection.In other words, in the circumferential direction of transmission shaft 10, cutter spindle 30 is relatively stationary or is being rotated with transmission shaft 10
Shi Erzhe is rotated together, and on the axis direction of transmission shaft 10, cutter spindle 30 is moveable relative to transmission shaft 10.By
This, transmission shaft 10 can drive cutter spindle 30 to rotate along the circumferential direction of transmission shaft 10, and cutter spindle 30 can also be completed
Sliding on the axis direction of transmission shaft 10.
For example, as shown in figure 5, specifically describing cutter spindle 30 relative to the axial shifting of transmission shaft 10 below with reference to attached drawing
How the closure or disengagement and cutter spindle 30 that clutch 220 how is realized when dynamic are axially movable relative to transmission shaft 10
But non-rotatable connection.The cutter spindle 30 can be moved to the second position by first position via the effect of an axial force,
When the cutter spindle 30 is at the second position, the percussion hammer 200 can be driven rotation by the transmission shaft 10 and can be opposite
It is moved in the guide part 210 by preset path, so that the axis along the cutter spindle is hit at least one operating state
Hit the cutter spindle 30；When the cutter spindle 30 is at first position, the transmission shaft 10 can not drive the percussion hammer 200
Rotation.Cutter spindle 30 includes the connecting pin connecting with transmission shaft 10, and the output end connecting with tool heads, and transmission shaft 10 leans on
The side of nearly connecting pin is equipped with the cavity 120 of axially open, and cavity 120 can extend along the axis direction of transmission shaft 10, knife
The connecting pin of tool main shaft 30 is protruded into 120 in cavity from opening, and the outer wall of 30 connecting pin of inner wall and cutter spindle of cavity 120 is logical
It crosses the spline 370 axially extended to cooperate, so that cutter spindle 30 can move axially relative to transmission shaft 10 and can be with transmission
Axis 10 rotates together.Specifically, as shown in Fig. 2, the inner wall of the outer wall of cutter spindle 30 and cavity 120 is equipped with convex ribs 340, and
Between adjacent convex ribs 340 on cutter spindle 30 formed radial depressions groove 350 so that 120 inner wall of cavity can with it is recessed
Slot 350 cooperates.
With continued reference to Fig. 5, Fig. 8-Figure 10, Figure 13 and Figure 15, the side wall of cavity 120 is equipped with radial hole 110, radial hole
110 the radial direction Through-cavity 120 of transmission shaft 10 side wall, clutch part 221 is located in radial hole 110 and can be in radial direction
It is moved in hole 110, above-mentioned receiving portion 201 can be equipped on the internal perisporium of percussion hammer 200.When clutch 220 is in engagement shape
When state, namely referring to Figure 13 and Figure 15, when cutter spindle 30 moves to first position, radial hole 110 and above-mentioned groove 350
Position is corresponding, and clutch part 221 radially transport to the receiving portion 201 far from percussion hammer 200 and close to the direction of groove 350 by hole 110
It is dynamic, so that clutch part 221 realizes the disengagement with percussion hammer 200；Referring to Fig. 9 and Figure 10, when cutter spindle moves to the second position,
Groove 350 is no longer and above-mentioned 110 position of radial hole is corresponding namely cutter spindle 30 at position corresponding with radial hole no longer
There is the space accommodated for clutch part 221, cutter spindle 30 squeezes clutch part 221 in the process of movement so that 221 edge of clutch part
Radial hole 110 it is mobile to 221 direction of receiving portion close to percussion hammer, be located at a part of clutch part in radial hole 110, simultaneously
Another part is located in receiving portion 201, and the rotation of percussion hammer 200 can rotate together under the action of clutch part 221 with transmission shaft 10.
It should be noted that in other embodiments of the invention, above-mentioned cavity 120 can also be located at the connection of cutter spindle 30
End, one end that transmission shaft 10 is connect with cutter spindle 30 are protruded into cavity 120, will be in this specification for this kind of embodiment
Hereinafter describe in detail.
As shown in Fig. 5, Fig. 9 and Figure 13, according to some embodiments of the present invention, setting and percussion hammer 200 on cutter spindle 30
The impact receiving unit 400 of mating.It is understood that can be equipped with impact receiving unit 400 on cutter spindle 30, percussion hammer 200 can
With impact receiving unit 400, percussion hammer 200 can drive cutter spindle 30 to transport by impact receiving unit 400 as a result,
It is dynamic, so that cutter spindle 30 drives tool heads to move along on the axis direction of transmission shaft 10 relative to transmission shaft 10
It is dynamic.
Further, as shown in Fig. 2, impact receiving unit 400 is formed as ring-type, impact receiving unit 400 is fixed on cutter
The periphery wall of main shaft 30, impact receiving unit 400 are located at the outside of transmission shaft 10, and impact receiving unit 400 is connect with cutter spindle 30,
For example, impact receiving unit 400 can be clamped with cutter spindle 30, impact receiving unit 400 can also be welded with cutter spindle 30.By
This can expand the contact area between impact receiving unit 400 and percussion hammer 200 when percussion hammer 200 hits cutter spindle 30, from
And the stability for the impact force that 200 pairs of percussion hammer impact receiving units 400 apply can be improved.
Embodiment 2
As shown in Fig. 1-Figure 30, handheld tool 1 according to an embodiment of the present invention, including shell 80, motor 60, transmission shaft
10, cutter spindle 30 and hammering blow mechanism 20.
As shown in Fig. 1, Fig. 5, Figure 13, Figure 21, Figure 23, Figure 25-Figure 27, transmission shaft 10 can be driven by motor 60 and be rotated, and be passed
Moving axis 10 can rotate about the axis thereof.Cutter spindle 30 is used for connecting tool head, and cutter spindle 30 can be driven by transmission shaft 10
Rotation.Hammering blow mechanism 20 has a percussion hammer 200, and percussion hammer 200 is sheathed at least one in transmission shaft 10 and cutter spindle 30
A outside and capable of being driven by transmission shaft 10 rotates.In other words, such as Fig. 1, Fig. 5, Figure 13, Figure 21, Figure 23, Figure 25-Figure 26 institute
Show that percussion hammer 200 can be externally fitted to transmission shaft 10, or, as shown in figure 27, percussion hammer 200 can be externally fitted to cutter spindle 30, may be used also
To be that percussion hammer 200 had not only been coated at transmission shaft 10 but also is coated at cutter spindle 30, transmission shaft 10 can directly or indirectly be driven
Percussion hammer 200 rotates.
As shown in Fig. 1, Fig. 5, Figure 13, Figure 21, Figure 23, Figure 25-Figure 27, hammering blow mechanism 20 further includes guide part 210, is led
The outside of percussion hammer 200 is sheathed on to part 210.Cutter spindle 30 can switch to second by first position via the effect of an axial force
Position, in other words, there are one along the external force on 30 axis direction of cutter spindle in cutter spindle 30, so as to
Cutter spindle 30 is enabled to switch to the second position from first position.When cutter spindle 30 is at the second position, 200 energy of percussion hammer
It is enough to be driven rotation by transmission shaft 10 and be moved relative to guide part 210 by preset path, thus at least one operation shape
Cutter spindle 30 is hit along the axis of cutter spindle 30 in state, when cutter spindle 30 is at first position, transmission shaft 10 can not be driven
Dynamic percussion hammer 200 rotates.
Handheld tool 1 according to an embodiment of the present invention, by applying the effect on its axis direction to cutter spindle 30
Power so as to switch the position of cutter spindle 30, and then can control the relationship between percussion hammer 200 and transmission shaft 10, go forward side by side
One step guides percussion hammer 200 by interval impact assembly 230 and moves linearly, and percussion hammer 200 can also hit cutter spindle 30, from
And the movement on 30 axis direction of cutter spindle may be implemented, so that cutter spindle 30 is on environment component (such as metope or plate)
When drilling, cutter spindle 30 forms impact force to environment component, so as to improve the drilling efficiency of handheld tool 1, moreover, this
The structure setting of the handheld tool 1 of inventive embodiments is compact and structure is simple, is convenient for carrying.
As shown in Figure 25-Figure 27, according to some embodiments of the present invention, the both ends of cutter spindle 30 are respectively connecting pin
380 and output end 390, connecting pin 380 connect with transmission shaft 10, output end 390 is connect with tool heads.When cutter spindle 30 is born
Axial force direction by output end 390 to connecting pin 380 when, in other words, when cutter spindle 30 bear power direction be from
The output end 390 of cutter spindle 30 to connecting pin 380 direction when, cutter spindle 30, which is allowed hand over to relative to transmission shaft 10, matches
The second position connect.When the direction for the power that cutter spindle 30 is born is from the connecting pin of cutter spindle 30 380 to output end 390
When direction, cutter spindle 30 switches to the first position being coupled relative to transmission shaft 10.Thus, it is possible to by being applied to cutter master
The action direction of the external force of axis 30 switches the location status of cutter spindle 30, so as to switch the work shape of handheld tool 1
State.
As shown in Fig. 1, Fig. 5, Figure 13, Figure 21, Figure 23, Figure 25-Figure 27, in some embodiments of the invention, work is held
Tool 1 further includes mode tuning mechanism 40, mode tuning mechanism 40 operationally first mode state and second mode state it
Between convert, in first mode state, cutter spindle 30 can be relative to transmission shaft 10 between the first position and the second position
In first mode state, handheld tool 1 can generate axis under the action of axial load for switching namely mode tuning mechanism 40
To impact, hereinafter referred to as the mode is " conflicting model "；In second mode state, cutter spindle 30 and mode tuning mechanism 40
Axial abut switches to the second position to limit cutter spindle 30 from first position, namely in mode tuning mechanism 40 in the second mould
When formula state, no matter cutter spindle 30 whether the effect by axial load, handheld tool 1 is generated without impact, simple below
The mode is referred to as " non-percussion mode ".
Further, as shown in Fig. 1, Fig. 5, Figure 13, Figure 21, Figure 23, Figure 25-Figure 27, handheld tool 1 further includes mode tune
Mechanism 40 is saved, mode tuning mechanism 40 operationally converts between first mode state and second mode state.Mode tuning machine
When structure 40 is located at first mode state, guide part 210 is fixed on shell 80, i.e. guide part 210 is static relative to shell 80, percussion hammer
200 can be moved in rotation along guide part 210 by preset path to hit cutter spindle 30；Mode tuning mechanism 40 is located at the
When two modes state, guide part 210 is rotatablely arranged at shell 80, i.e., guide part 210 is movable relative to shell 80, and hits
200 pairs of cutter spindles 30 are hammered into shape without impact.Thus, it is possible to pass through the state of control model regulating mechanism 40, reach control guide part
210 operating status so as to control the matching relationship between percussion hammer 200 and guide part 210, and then can control percussion hammer
200 working condition, to realize the switching of 1 working condition of handheld tool.
As shown in Figure 19-Figure 20, in some embodiments of the invention, mode tuning mechanism 40 includes being set to guide part
The first groove 212 on 210, the impact switch piece equipped with the second groove 431, impact switch piece are axially movable but not can be rotated
Ground is fixed in the shell 80 of handheld tool 1, and specifically, impact switch piece is impact switching ring 430, and impacts switching ring 430
Movably it is coated at percussion hammer 200.Wherein, when mode tuning mechanism 40 is located at first mode state, the first groove 212 and
The engagement of two grooves 431；When mode tuning mechanism 40 is located at second mode state, the first groove 212 and the second groove 431 are spaced
It opens.
It is understood that impact switching ring 430 is coated at percussion hammer 200, it can between impact switching ring 430 and percussion hammer 200
With relative movement, impact switching ring 430 is equipped with the second groove 431, and guide part 210 is equipped with the first groove 212, the first groove
212 can be cooperatively connected with the second groove 431, so as to which guide part 210 and impact switching ring 430 are connected,
At this point, impact switching ring 430 can limit the movement of guide part 210, guide part 210 and impact switching ring 430 are opposing stationary, hit
Hammer 200 can be moved linearly by preset path with counter-guide 210 and hit cutter spindle at least one operating state
30。
The position of ring 430 can also be switched by switching shock, so that the first groove 212 is spaced apart with the second groove 431,
At this point, guide part 210 is mobilizable, drive of the guide part 210 in interval impact assembly 230 relative to impact switching ring 430
Under, it can be rotated together with percussion hammer 200, percussion hammer 200 is relatively stationary with guide part 210.Thus, it is possible to by adjusting the
The matching relationship of one groove 212 and the second groove 431, with the positional relationship and dress of adjustable guiding part 210 and impact switching ring 430
With relationship, so as to control the motion state of guide part 210, and then the motion state of cutter spindle 30 can be improved, reach
Control the operating mode of handheld tool 1.
Further, as shown in Figure 19, Figure 21-Figure 26, mode tuning mechanism 40 further includes bolster 440, bolster 440
One end and impact switching ring 430 offset with normal promotions impact switching ring 430 towards guide part 210 movement.Bolster as a result,
440 can often push impact switching ring 430 close to guide part 210, so that the first groove 212 and the second groove 431
Cooperation.
Further, as shown in Figure 19-Figure 24, mode tuning mechanism 40 further includes mode selector button 450, mode selector button
450 are rotationally coated at impact switching ring 430, and mode selector button 450 can be rotated relative to impact switching ring 430, and mode is cut
The internal perisporium for changing button 450 is equipped with guiding block 451, and the periphery wall of impact switching ring 430 is equipped with cooperation compatible with guiding block 451
Block 432, rotation mode switch bar 450, wherein when guiding block 451 and coordinating block 432 axially offset, guiding block 451 pushes punching
It hits switching ring 430 and compresses bolster 440 to the direction movement far from guide part 210, between the first groove 212 and the second groove 431
It separates；When guiding block 451 and coordinating block 432 are staggered, impact switching ring 430 is under the action of bolster 440 to close to guiding
The direction of part 210 is mobile, and the first groove 212 is engaged with the second groove 431.
It is understood that can be switched by rotation mode switch bar 450 or impact switching ring 430 with switch mode
Positional relationship between button 450 and impact switching ring 430, to change the mated condition between guiding block 451 and coordinating block 432.
Thus, it is possible to by the matching relationship between switching guiding block 451 and coordinating block 432, to control the first groove 212 and the second tooth
Matching relationship between line 431.Further, as shown in figure 20, guiding block 451 has guide ramp 451a, is matched with guiding
Close block 432.Thus, it is possible to easily switch the matching relationship between guiding block 451 and coordinating block 432.
In other embodiments of the invention, mode tuning mechanism 40 can also use other structures, specifically, referring to
Fig. 2-Fig. 5, Fig. 9 and Figure 13, mode tuning mechanism 40 include stopping pressure ring 410 and mode tuning button 420.Only pressure ring 410 is coated at
Transmission shaft 10 is specifically sheathed on above-mentioned impact receiving unit 400, and only pressure ring 410 relative to transmission shaft 10 can be rotated but not
It is axially movable, and mode tuning button 420 is rotationally coated at only pressure ring 410.Only pressure ring 410 is equipped with retaining part 411, mode
The internal perisporium of adjusting knob 420 is equipped with the channel 422 for being suitable for passing through for retaining part 411, axis direction of the channel 422 along transmission shaft 10
Extend.
Wherein, when mode tuning mechanism 40 is located at first mode state, retaining part 411 is only supported with mode tuning button 420；
When mode tuning mechanism 40 is located at second mode state, retaining part 411 is corresponding with 422 position of channel, 30 energy of cutter spindle
Enough drive stops pressure ring along the axial movement of cutter spindle.Thus, it is possible to stop the retaining part 411 and mode of pressure ring 410 by adjusting
The relative positional relationship of adjusting knob 420 realizes the adjusting to 200 motion state of percussion hammer, so as to adjust cutter spindle 30
Operating mode.It is specific as Figure 3-Figure 4, mode tuning button 420 further includes be set to 420 internal perisporium of mode tuning button convex
Edge 421, flange 421 is annular in shape and extends along the circumferential direction for stopping pressure ring 410, and channel 422 is passed through along the axis direction of only pressure ring 410
Logical flange 421.Flange 421 can construct channel 422 as a result, and flange 421 can also only be supported with retaining part 411.
As Figure 3-Figure 4, in some embodiments of the invention, retaining part 411 includes fixed section 411a, linkage section
411b and cooperation section 411c.Fixed section 411a extends from only pressure ring 410, and one end of linkage section 411b and fixed section 411a connect
It connects, one end of cooperation section 411c is connect with the other end of linkage section 411b, and cooperation section 411c is suitable for through channel 422, fixed section
411a and linkage section 411b is spaced apart along the axis direction for stopping pressure ring 410.Further, linkage section 411b and fixed section 411a connects
The position rounding off connect；Alternatively, the position rounding off that linkage section 411b is connect with cooperation section 411c.
As shown in Figures 2 and 6, in some embodiments of the invention, the periphery wall for impacting receiving unit 400 has step surface
404, only pressure ring 410 is only supported with step surface 404.Step surface 404 can limit the movement of only pressure ring 410 as a result, avoid only pressure ring
410 from impact receiving unit 400.
As shown in Figure 25-Figure 27, in some embodiments of the invention, one end that transmission shaft 10 is connected with connecting pin 380
For driving end 130, one of connecting pin 380 and driving end 130 are equipped with axial hole 360, another end is protruded into axial hole 360.
For example, the end face of the driving end 130 of transmission shaft 10 can be equipped with axial hole 360, axial hole 360 along transmission shaft 10 axis side
To extension, axial hole 360 is opened wide towards the connecting pin of cutter spindle 30 380, and the end of the connecting pin 380 of cutter spindle 30 can be with
It protrudes into axial hole 360.For another example, the connecting pin 380 of cutter spindle 30 can be equipped with axial hole 360, and axial hole 360 is along cutter
The axis direction of main shaft 30 extends, and the driving end 130 of axial hole 360 towards transmission shaft 10 opens wide, the driving end 130 of transmission shaft 10
End can protrude into axial hole 360.For setting opening on the connecting pin of cutter spindle 30 to facilitate transmission shaft 10 to carry out
The connection type of grafting is introduced in the above embodiments 1, and details are not described herein again.Below by the transmission to transmission shaft 10
The connection type that opening is arranged on end face is described in detail.
As shown in Figure 25-Figure 27, the inner wall of axial hole 360 and the outer wall of another end are equipped with to realize transmission shaft
The spline 370 that torque transmits between 10 and cutter spindle 30.Thus, it is possible to improve the company between transmission shaft 10 and cutter spindle 30
Stability is connect, and can not only transmit the rotation in cutter spindle 30 and 10 circumferential direction of transmission shaft, it is also possible that cutter
Relative movement between main shaft 30 and transmission shaft 10 in the axial direction.
Further, as shown in Figure 13, Figure 25-Figure 27, the spline on another end in axial hole 360 is protruded into
Radial groove can be formed between 370, the outer wall of axial hole 360 is equipped with radial hole 110, when cutter spindle 30 is located at first position
When, radial hole 110 is corresponding with radial groove position, and steel ball can at least partly be fallen into radial groove, and disengages with percussion hammer；When
Cutter spindle 30 by one by output end 390 to connecting pin 380 axial force when namely cutter spindle 30 be located at the second position
When, radial hole 110 is no longer corresponding with radial groove, and steel ball is moved along radial hole 110 and connect with percussion hammer 200 to realize transmission
Axis is able to drive the rotation of percussion hammer 200.Thus, it is possible to by the relative positional relationship of control steel ball and radial groove, so as to
The matching relationship between percussion hammer 200 and cutter spindle 30 or transmission shaft 10 is controlled, so as to control the movement shape of percussion hammer 200
State, and then can control the working condition of cutter spindle 30, to realize the switching of 1 operating mode of handheld tool.
As shown in Fig. 1, Fig. 5, Figure 13, Figure 21, Figure 23, Figure 25-Figure 27, according to some embodiments of the present invention, hammering blow
Mechanism 20 further includes interval impact assembly 230.When transmission shaft 10 drives percussion hammer 200 to rotate, interval impact assembly 230, which forces, is hit
200 counter-guides 210 are hammered into shape to move linearly by preset path and hit cutter spindle 30 at least one operating state.It can
With understanding, interval impact assembly 230 can also be with guide part with 200 mating reaction of percussion hammer, interval impact assembly 230
210 mating reactions.When transmission shaft 10 drives percussion hammer 200 to rotate, interval impact assembly 230 can change the movement of percussion hammer 200
Path, and the motion path can not only make percussion hammer 200 rotate around the circumferential direction of transmission shaft 10, but also can make percussion hammer 200
It is moved along the axis direction of transmission shaft 10, so that percussion hammer 200 hits cutter spindle 30, and then completes cutter spindle
30 sliding relative to transmission shaft 10.
As shown in Fig. 2, Fig. 5, Fig. 7 and Fig. 9-Figure 12, according to some embodiments of the present invention, interval impact assembly 230 is wrapped
Include the accumulating mechanism 231 abutted with percussion hammer 200 and the bridgeware being set between guide part 210 and percussion hammer 200 232 and curved surface
Guide portion 233.It is understood that interval impact assembly 230 includes accumulating mechanism 231, bridgeware 232 and curved surface guide portion
233, bridgeware 232 and curved surface guide portion 233 are respectively positioned between guide part 210 and percussion hammer 200, one end of accumulating mechanism 231 with
Percussion hammer 200 abuts.Thus, it is possible to pass through the concrete shape of constructing curve guide portion 233, to guide the movement rail of bridgeware 232
Mark, bridgeware 232 can realize with percussion hammer 200 and link that percussion hammer 200 can drive bridgeware 232 along the circumferential direction of transmission shaft 10
Direction rotation, bridgeware 232 can drive percussion hammer 200 to move along the track of curved surface guide portion 233.
Further, as shown in Figure 13 and Figure 17-Figure 18, baffle 100,100 housing of baffle can be equipped on transmission shaft 10
In the periphery wall of transmission shaft 10, accumulating mechanism 231 is between percussion hammer 200 and baffle 100, and accumulating mechanism 231 is far from percussion hammer 200
One end can cooperate with baffle 100.After percussion hammer 200 is moved a certain distance towards accumulating mechanism 231, percussion hammer 200 and baffle
100 can be with compress energy storage mechanism 231.Accumulating mechanism 231 can form motive force to percussion hammer 200 as a result,.
As shown in Figure 11-Figure 12, in some embodiments of the invention, curved surface guide portion 233 can be formed as cyclic annular, bent
Face guide portion 233 can be surround along the circumferential direction of transmission shaft 10, and curved surface guide portion 233 may include climbing section 233a and fall
Section 233b, the one end for falling section 233b are connect with one end of climbing section 233a, fall the other end direction climbing section of section 233b
The other end of 233a extends.Further, climbing section 233a can helically line style.Falling section 233b can be of a straight line type, and
The axis direction for falling section 233b along transmission shaft 10 extends.At least partly bridgeware 232 can cooperate with curved surface guide portion 233.
Preferably, described to climb in order to guarantee that percussion hammer forms enough impact forces, and the volume compact of handheld tool 1 to cutter spindle 30
Slope 233a climbs height greater than 3mm in the axial direction and is less than or equal to 20mm, it is preferable that climb height between 4mm to 15mm,
Preferably, climbing height is 10mm.
When bridgeware 232 and climbing section 233a cooperation, one end direction climbing section of the bridgeware 232 from climbing section 233a
The other end of 233a rolls, and percussion hammer 200 is mobile towards baffle 100, and percussion hammer 200 and baffle 100 can be with compress energy storage mechanisms 231；
When bridgeware 232, which falls section 233b positioned at the other end and direction of climbing section 233a, to be rolled, accumulating mechanism 231 can be pushed and be hit
Hammer 200 falls towards falling section 233b close to one end of baffle 100 close to the other end of tool heads from falling section 233b, namely hits
Hammer 200 is directed away from baffle 100 and mobile close to the direction of tool heads, and percussion hammer 200 a part of close simultaneously hits cutter spindle
30 are located at the part in 10 outside of transmission shaft, so that cutter spindle 30 is relative to transmission shaft 10 along the axis direction of transmission shaft 10
Mobile, percussion hammer 200 forms the hammering to cutter spindle 30 and tool heads.
Further, as shown in Fig. 7, Figure 15, the end face of the close accumulating mechanism 231 of percussion hammer 200 can be equipped with mounting groove
203, the end of accumulating mechanism 231 can be located in mounting groove 203, and the end of accumulating mechanism 231 can be with the bottom of mounting groove 203
Wall offsets.Thus, it is possible to improve the Assembly stability of accumulating mechanism 231 Yu percussion hammer 200.
As shown in figure 12, in some embodiments of the invention, curved surface guide portion 233 may include that multistage is segmented, and every section
Segmentation includes that a climbing section 233a and one falls a section 233b.Bridgeware 232 can be to be multiple, and multiple bridgewares 232 can edge
The circumferential direction of percussion hammer 200 is spaced apart.For the outer diameter of percussion hammer 200 between 20mm-40mm, slope height is greater than 3mm in the present embodiment
And it is less than or equal to 15mm, it is preferable that climbing height is more than or equal to 4mm and is less than or equal to 8mm, it is further preferable that climbing height is
5mm.It is to be appreciated that in order to guarantee that bridgeware 232 is climbed smooth, it is preferable that segments is 2 to 7, is particularly advantageously divided
Number of segment is 3-4, and the number of segment for the section 233a that climbs in the present embodiment is preferably 3.
It should be noted that the assembly for bridgeware 232 and curved surface guide portion 233 on percussion hammer 200 and guide part 210
Position and assembly relation are not especially limited.In some embodiments of the invention, bridgeware 232 is located at guide part 210 and hits
Hammer 200 alternative one into shape, curved surface guide portion 233 is located at the another of both guide part 210 and percussion hammer 200.Thus, it is possible to realize conversion
The assembly relation of part 232, curved surface guide portion 233 and percussion hammer 200, guide part 210, so as to utilize bridgeware 232 and curved surface
The relative motion between matching relationship and bridgeware 232 and curved surface guide portion 233 between guide portion 233, may be implemented percussion hammer
200 relative motion relative to guide part 210, percussion hammer 200 can be moved along the axis direction of transmission shaft 10 relative to transmission shaft 10
It is dynamic.Bridgeware 232 is in the preset path that the motion profile of curved surface guide portion 233 is percussion hammer 200.
As shown in Fig. 9-Figure 12, in some examples of the invention, bridgeware 232 can be located on percussion hammer 200, and curved surface draws
Portion 233 is led to be located on guide part 210.For example, as shown in Fig. 2, Fig. 5, Fig. 7 and Figure 11-Figure 12, it can on the periphery wall of percussion hammer 200
To be equipped with embedded groove 202, a part of of bridgeware 232 can be located in embedded groove 202, and the internal perisporium of guide part 210 is equipped with
The another part of curved surface guide portion 233, bridgeware 232 can cooperate with curved surface guide portion 233.
As exemplified in figs, in other examples of the invention, bridgeware 232 can be located on guide part 210,
Curved surface guide portion 233 is located on percussion hammer 200.For example, the internal perisporium of guide part 210 is equipped with holding tank 211, bridgeware 232
A part can be located in holding tank 211, and curved surface guide portion 233 can be equipped on the periphery wall of percussion hammer 200, bridgeware 232
Another part can cooperate with curved surface guide portion 233.
As shown in Fig. 2, Figure 16 and Figure 19, in some embodiments of the invention, steel ball is can be set into bridgeware 232,
As shown in Figure 11-Figure 12, it is preferable that in order to guarantee the intensity of steel ball, the diameter of steel ball is greater than 4mm and is less than or equal to 10mm, has
Sharp ground, the diameter of steel ball are more than or equal to 4mm and are less than or equal to 6mm, and the diameter of steel ball is 5mm in the present embodiment.Curved surface guide portion
233 can be set into cam surface or cam path.Cam surface or cam path can limit the activity trajectory of steel ball, steel as a result,
Ball can be in the interior activity of cam surface or cam path, and steel ball has round and smooth outer surface, can not only reduce bridgeware 232 with
Relative motion frictional force between curved surface guide portion 233 improves activity smoothness of the bridgeware 232 in curved surface guide portion 233,
And the structural strength of steel ball is big, abrasion resistance properties are good, so as to ensure the working performance of interval impact assembly 230.It needs
Illustrate, " cam " mentioned herein can refer to that curved surface guide portion 233 protrudes from the internal perisporium of guide part 210, or
Curved surface guide portion 233 protrudes from the periphery wall of percussion hammer 200.
Further, steel ball can be that point or line contact with curved surface guide portion 233, it is to be understood that steel ball is in curved surface
In guide portion 233 during movement, it is always that a point or line contact that steel ball is contacted with curved surface guide portion 233, is conducive to subtract
Friction between few steel ball and curved surface guide portion 233.For example, the radius of curvature of cam surface can be essentially identical with the radius of steel ball
Or it is bigger, so as to improve the fitness of steel ball and cam surface, and then the Assembly stability of steel ball and cam surface is improved, it is wear-resisting
Property and service life.
As shown in Fig. 2, Figure 16 and Figure 19, in some embodiments of the invention, elasticity is can be set into accumulating mechanism 231
Part, for example, accumulating mechanism 231 can be spring or elastic rubber.Thus, it is possible to simplify setting and the dress of accumulating mechanism 231
Match, the manufacturing cost of accumulating mechanism 231 can also be reduced.Further, accumulating mechanism 231 can be formed as annular, energy accumulating machine
Structure 231 can with housing transmission shaft 10 periphery wall.It is convenient for the assembly of accumulating mechanism 231 as a result, and being capable of uniform accumulating mechanism
The active force of 231 pairs of percussion hammers 200.
Embodiment 3
As shown in Fig. 1-Figure 30, handheld tool 1 according to an embodiment of the present invention, including motor 60, transmission shaft 10, hammering blow
Mechanism 20 and cutter spindle 30.
Specifically, transmission shaft 10 is driven by motor 60 to be rotated and around 10 axis of transmission shaft as shown in Figure 1, Figure 2 and shown in Fig. 5
Rotation, in other words, motor 60 drive transmission shaft 10 to rotate, and transmission shaft 10 is rotated around the axis of transmission shaft 10.It is understood that
It is that motor 60 is connect with transmission shaft 10, it should be noted that " connection " mentioned herein can refer to motor 60 and transmission shaft
10 are directly connected to, for example, the output end of motor 60 can be directly connected to the end of transmission shaft 10, " connection " may also mean that horse
It is indirectly connected with up to 60 with transmission shaft 10, for example, motor 60 can be directly connected to intermediate transmission component, then passes through intermediate transmission group
Part is directly connected to transmission shaft 10.
Cutter spindle 30 is axially movable relative to transmission shaft 10 but connects without relative rotation, in other words, in transmission shaft
In 10 circumferential direction, cutter spindle 30 is relatively stationary with transmission shaft 10, on the axis direction of transmission shaft 10, cutter master
Axis 30 can be moved relative to transmission shaft 10.Transmission shaft 10 can drive cutter spindle 30 to turn along the circumferential direction of transmission shaft 10
Dynamic, cutter spindle 30 can also complete the sliding on the axis direction of transmission shaft 10.
As shown in Fig. 2, Fig. 5-Figure 13, hammering blow mechanism 20 has a percussion hammer 200, and percussion hammer 200 is sheathed on outside transmission shaft 10
Side, and can be driven and be rotated by transmission shaft 10.It is understood that hammering blow mechanism 20 includes percussion hammer 200, percussion hammer 200 can be with
It is coated at the periphery wall of transmission shaft 10, percussion hammer 200 can be cooperatively connected with transmission shaft 10, and transmission shaft 10 can be further driven to hit
Hammer 200 is rotated around the axis of transmission shaft 10.It should be noted that " connection " mentioned herein can refer to percussion hammer 200 with
Transmission shaft 10 is directly connected to, and may also mean that percussion hammer 200 is indirectly connected with transmission shaft 10.
As shown in Fig. 5, Fig. 8-Figure 10, Figure 13 and Figure 15, according to some embodiments of the present invention, hammering blow mechanism 20 also has
There is a disengagable clutch 220, clutch 220 is arranged for transmitting the rotation between transmission shaft 10 and percussion hammer 200
Transhipment is dynamic.It is understood that clutch 220 can be such that transmission shaft 10 and percussion hammer 200 cooperates, clutch 220 can also be with
Transmission shaft 10 and percussion hammer 200 are disengaged, when clutch 220 makes transmission shaft 10 and percussion hammer 200 cooperates, the rotation of transmission shaft 10
Movement can pass to percussion hammer 200 by clutch 220, so that percussion hammer 200 be driven to rotate；When clutch 220 makes the two
When disengagement, the matching relationship between clutch 220 and percussion hammer 200 is released, and transmission shaft 10 is rotated relative to percussion hammer 200, percussion hammer
200 is static relative to guide part 210.Thus, it is possible to the movement of percussion hammer 200 be controlled by clutch 220, to control percussion hammer
Whether 200 hit cutter spindle 30, and then can change the working condition of handheld tool 1.In some embodiments of the invention,
Clutch 220 is configured to be closed by one via the power that cutter spindle 30 transmits.It is understood that clutch 220
It can be controlled by cutter spindle 30 between percussion hammer 200 with the presence or absence of matching relationship, cutter spindle 30 can be to clutch
220 apply external force, to change the relationship between clutch 220 and percussion hammer 200, as tool heads or cutter spindle 30 are connected to work
When condition (namely cutter spindle 30 by an axial load when), clutch 220 is closed, and hand-held tool 1 is switched to impact shape
State.Therefore, handheld tool 1 is in working condition, and when tool heads are connected to operating condition, handheld tool 1 can automatically switch to punching
State is hit, hereinafter referred to as this kind of mode is " conflicting model ".
It should be noted that not all operating condition is suitable for hand-held tool 1 under impact conditions in real work
Work, when many, operator wishes hand-held tool 1 in working condition, and tool heads or cutter spindle 30 are by from work
When the load of condition, it still is able to the working condition in non-percussion, hereinafter referred to as this kind of operating mode is " non-percussion operating mode ".
Therefore, in order to make handheld tool 1 be adapted to various working, handheld tool 1 further includes mode tuning mechanism 40, energy
As shown in Fig. 2-Fig. 6, Figure 13-Figure 15 and Figure 19-Figure 30, mode tuning mechanism 40 is operationally in first mode state and second
It is converted between mode state, when mode tuning mechanism 40 is located at first mode state (i.e. such as Fig. 5-Fig. 6, Fig. 9-Figure 10, Figure 21-
Position shown in Figure 22 and Figure 25) when, percussion hammer 200 can be driven rotation to make linear fortune by preset path by transmission shaft 10
It is dynamic, and cutter spindle 30 is hit at least one operating state, in other words, transmission shaft 10 can cooperate with percussion hammer 200, transmission
Axis 10 can provide power for percussion hammer 200, so that percussion hammer 200 is moved along preset path, and percussion hammer 200 during the motion may be used
To hit cutter spindle 30；When mode tuning mechanism 40 is located at second mode state (such as Figure 13-Figure 15, Figure 23-Figure 24 and Figure 26
Shown in position) when, transmission shaft 10 can not drive percussion hammer 200 rotate, and percussion hammer 200 to cutter spindle 30 without shock.
Handheld tool 1 according to an embodiment of the present invention is adjusted by Setting pattern regulating mechanism 40, and by switch mode
The state of mechanism 40 changes the matching relationship between transmission shaft 10 and percussion hammer 200, so as to whether control percussion hammer 200 to cutter
Main shaft 30 has impact effects, and then the switching of handheld tool 1 conflicting model and non-percussion mode may be implemented, so as to mention
The performance of high handheld tool 1, so that the structure setting of handheld tool 1 is compact, simple, functional diversities, and can be convenient simultaneously
It carries.
As shown in Fig. 5, Fig. 8-Figure 10, Figure 13 and Figure 15, in some examples of the invention, clutch 220 includes setting
It is placed in transmission shaft 10 and 200 alternative one clutch part 221 of percussion hammer, and is set to the another of both transmission shaft 10 and percussion hammer 200
Receiving portion 201, when clutch 220 is in meshing state, clutch part 221 with 201 shape of receiving portion is matched engages, when
When clutch 220 is in disengaged condition, clutch part 221 is separated with receiving portion 201.
It is understood that clutch 220 includes clutch part 221 and receiving portion 201, in transmission shaft 10 and percussion hammer 200
One of them be equipped with clutch part 221, another be equipped with receiving portion 201.When clutch 220 in the closure state, clutch
Part 221 and receiving portion 201 cooperate, and when clutch 220 is in disengaged condition, clutch part 221 is separated with receiving portion 201.By
This, can be by the assembly relation of clutch part 221 and receiving portion 201, to switch the working condition of clutch 220.
As shown in Fig. 5, Fig. 8-Figure 10, Figure 13 and Figure 15, in some examples of the invention, clutch part 221 be can be set
Groove body 201a can be set into glomeration or column, receiving portion 201.Spherical or column all has round and smooth outer surface, round and smooth
Outer surface has lesser frictional force in active procedure, to be easy to the state switching of clutch part 221.Receiving portion 201 is set
It is set to groove body 201a to be not only convenient for being arranged, and convenient for being cooperated with clutch part 221.For example, one of 200 internal perisporium of percussion hammer
The radial outside towards percussion hammer 200 is divided to be recessed to form receiving portion 201.Further, the bottom wall of groove body 201a can be formed as
Cambered surface, cambered surface can be recessed towards the radial outside of percussion hammer 200.As a result, groove body 201a can with wrapping portion clutch part 221, from
And the fitment stability of clutch part 221 Yu groove body 201a can be improved.
According to some embodiments of the present invention, cutter spindle 30 is axially movable but can not relatively rotate with respect to transmission shaft 10
Ground connection.In other words, in the circumferential direction of transmission shaft 10, cutter spindle 30 is relatively stationary or is being rotated with transmission shaft 10
Shi Erzhe is rotated together, and on the axis direction of transmission shaft 10, cutter spindle 30 is moveable relative to transmission shaft 10.By
This, transmission shaft 10 can drive cutter spindle 30 to rotate along the circumferential direction of transmission shaft 10, and cutter spindle 30 can also be completed
Sliding on the axis direction of transmission shaft 10.
For example, as shown in figure 5, the cutter spindle 30 can be relative to transmission shaft 10 first via the effect of an axial force
Switch between position and the second position, when the cutter spindle 30 is at the second position, the percussion hammer 200 can be by the transmission
The driving of axis 10 is rotated and can be moved relative to the guide part 210 by preset path, thus at least one operating state
Axis along the cutter spindle hits the cutter spindle 30；When the cutter spindle 30 is at first position, the transmission
Axis 10 can not drive the percussion hammer 200 to rotate.The cutter spindle 30 includes the connecting pin connecting with the transmission shaft 10, and
The output end connecting with the tool heads, transmission shaft 10 are equipped with the cavity 120 of axially open, cavity close to the side of connecting pin
120 can extend along the axis direction of transmission shaft 10, and the connecting pin of cutter spindle 30 is protruded into 120 in cavity from opening, empty
The outer wall of 30 connecting pin of inner wall and cutter spindle of chamber 120 passes through the spline 370 axially extended and cooperates, so that cutter spindle 30
It can move axially and can be rotated together with transmission shaft 10 relative to transmission shaft 10.Specifically, as shown in Fig. 2, cutter spindle 30
Outer wall and the inner wall of cavity 120 be equipped with convex ribs 340, and formed between the adjacent convex ribs 340 on cutter spindle 30 radial
The groove 350 of recess, so that 120 inner wall of cavity can cooperate with groove 350.
With continued reference to Fig. 5, Fig. 8-Figure 10, Figure 13 and Figure 15, the side wall of cavity 120 is equipped with radial hole 110, radial hole
110 the radial direction Through-cavity 120 of transmission shaft 10 side wall, clutch part 221 is located in radial hole 110 and can be in radial direction
It is moved in hole 110, above-mentioned receiving portion 201 can be equipped on the internal perisporium of percussion hammer 200.Referring to Figure 13 and Figure 15, work as clutch
When structure 220 is in disengaged condition namely when cutter spindle 30 moves to the second position, radial hole 110 with above-mentioned groove 350
To set corresponding, radially hole 110 moves clutch part 221 to the receiving portion 201 far from percussion hammer 200 and close to the direction of groove 350,
So that clutch part 221 realizes the disengagement with percussion hammer 200；Referring to Fig. 9 and Figure 10, when clutch 220 is in closed state, namely
When cutter spindle moves to the second position, groove 350 is no longer corresponding with above-mentioned 110 position of radial hole namely cutter spindle 30
There is no the space accommodated for clutch part 221 at upper position corresponding with radial hole, cutter spindle 30 squeezes in the process of movement
Pressure clutch part 221 makes clutch part so that clutch part 221 is moved along radial hole 110 to close to 221 direction of receiving portion of percussion hammer
221 a part is located in radial hole 110, while another part is located in receiving portion 201, and percussion hammer 200 is rotated in clutch part 221
Under the action of can be rotated together with transmission shaft 10.It should be noted that in other embodiments of the invention, above-mentioned cavity
120 can also be located at the connecting pin of cutter spindle 30, and one end that transmission shaft 10 is connect with cutter spindle 30 is protruded into cavity 120.
As shown in Fig. 2, Fig. 5, Fig. 7 and Fig. 9-Figure 12, according to some embodiments of the present invention, interval impact assembly 230 is wrapped
Include the accumulating mechanism 231 abutted with percussion hammer 200 and the bridgeware being set between guide part 210 and percussion hammer 200 232 and curved surface
Guide portion 233.Interval impact assembly 230 further includes accumulating mechanism 231, and bridgeware 232 and curved surface guide portion 233 are respectively positioned on guiding
Between part 210 and percussion hammer 200, and one end of accumulating mechanism 231 is abutted with percussion hammer 200.Thus, it is possible to be guided by constructing curve
The concrete shape in portion 233, to guide the motion profile of bridgeware 232, bridgeware 232 can be realized with percussion hammer 200 and be linked, percussion hammer
200 232 move under the action of bridgeware along the track of curved surface guide portion 233.
Further, as shown in Figure 13 and Figure 17-Figure 18, baffle 100,100 housing of baffle can be equipped on transmission shaft 10
In the periphery wall of transmission shaft 10, accumulating mechanism 231 is between percussion hammer 200 and baffle 100, and accumulating mechanism 231 is far from percussion hammer 200
One end can cooperate with baffle 100.After percussion hammer 200 is moved a certain distance towards accumulating mechanism 231, percussion hammer 200 and baffle
100 can be with compress energy storage mechanism 231.Accumulating mechanism 231 can form motive force to percussion hammer 200 as a result,.Certainly, for accumulation of energy
The axial limited way of mechanism can also use other structures, and details are not described herein again.
As shown in Figure 11-Figure 12, in some embodiments of the invention, curved surface guide portion 233 can be formed as cyclic annular, bent
Face guide portion 233 can be surround along the circumferential direction of transmission shaft 10, specifically, curved surface guide portion 233 may include climbing section
233a and fall a section 233b, the one end for falling section 233b is connect with the one end for the section 233a that climbs, and falls the other end court of section 233b
Extend to the other end of climbing section 233a.Further, climbing section 233a can helically line style, falling section 233b can be in straight
Line style, and fall section 233b and extend along the axis direction of transmission shaft 10.Preferably, in order to guarantee percussion hammer to cutter spindle 30 formation
Enough impact forces, and the volume compact of handheld tool 1, climbing 233a height of climbing in the axial direction are greater than 3mm and small
In equal to 15mm, it is preferable that climbing height is more than or equal to 4mm and is less than or equal to 8mm, it is preferable that height of climbing is 5mm.
When bridgeware 232 and climbing section 233a cooperation, one end direction climbing section of the bridgeware 232 from climbing section 233a
The other end of 233a rolls, and percussion hammer 200 is mobile towards baffle 100, and percussion hammer 200 and baffle 100 can be with compress energy storage mechanisms 231；
When bridgeware 232, which falls section 233b positioned at the other end and direction of climbing section 233a, to be rolled, accumulating mechanism 231 can be pushed and be hit
Hammer 200 falls towards falling section 233b close to one end of baffle 100 close to the other end of tool heads from falling section 233b, namely hits
Hammer 200 is directed away from baffle 100 and quickly falls close to the directions of tool heads, and percussion hammer 200 a part of close simultaneously hits cutter
Main shaft 30 is located at the part in 10 outside of transmission shaft, so that cutter spindle 30 is relative to transmission shaft 10 along the axis of transmission shaft 10
Direction is mobile, and percussion hammer 200 forms the hammering to cutter spindle 30 and tool heads.
As shown in Fig. 5, Fig. 9 and Figure 13, according to some embodiments of the present invention, setting and percussion hammer 200 on cutter spindle 30
The impact receiving unit 400 of mating.It is understood that can be equipped with impact receiving unit 400 on cutter spindle 30, percussion hammer 200 can
With impact receiving unit 400, percussion hammer 200 can drive cutter spindle 30 to transport by impact receiving unit 400 as a result,
It is dynamic, so that cutter spindle 30 moves on the axis direction of transmission shaft 10 relative to transmission shaft 10.
Further, as shown in Fig. 7, Figure 15, the end face of the close accumulating mechanism 231 of percussion hammer 200 can be equipped with mounting groove
203, the end of accumulating mechanism 231 can be located in mounting groove 203, and the end of accumulating mechanism 231 can be with the bottom of mounting groove 203
Wall offsets.Thus, it is possible to improve the Assembly stability of accumulating mechanism 231 Yu percussion hammer 200.
As shown in figure 12, in some embodiments of the invention, curved surface guide portion 233 may include that multistage is segmented, and every section
Segmentation includes that a climbing section 233a and one falls a section 233b.Bridgeware 232 can be to be multiple, and multiple bridgewares 232 can edge
The circumferential direction of percussion hammer 200 is spaced apart.The present embodiment in order to guarantee the reasonability of handheld tool whole design, middle percussion hammer 200
Outer diameter is between 15mm-50mm, it is preferable that between 20mm-40mm, slope height is greater than 3mm and is less than or equal to percussion hammer outer diameter
15mm, it is preferable that climbing height is more than or equal to 4mm and is less than or equal to 8mm, it is further preferable that climbing height is 5mm.It can manage
Xie Di, in order to guarantee that bridgeware 232 can smoothly climb, it is preferable that segments is 2 to 7, and particularly advantageously segments is 3-
4, the number of segment for the section 233a that climbs in the present embodiment is preferably 3.
It should be noted that by above-mentioned introduction it is found that bridgeware 232 and curved surface guide portion 233 are located at percussion hammer 200 and guiding
Between part 210, specifically, bridgeware 232 is located at 200 alternative one of guide part 210 and percussion hammer, curved surface guide portion 233, which is located at, to be led
To the another of 200 the two of part 210 and percussion hammer.As exemplified in figs, in other examples of the invention, bridgeware 232 can
To be located on guide part 210, curved surface guide portion 233 is located on percussion hammer 200.It is accommodated for example, the internal perisporium of guide part 210 is equipped with
Slot 211, a part of of bridgeware 232 can be located in holding tank 211, and curved surface can be equipped on the periphery wall of percussion hammer 200 and is guided
The another part in portion 233, bridgeware 232 can cooperate with curved surface guide portion 233.As exemplified in figs, of the invention another
In some examples, bridgeware 232 can be located on guide part 210, and curved surface guide portion 233 is located on percussion hammer 200.For example, guiding
The internal perisporium of part 210 is equipped with holding tank 211, and a part of of bridgeware 232 can be located in holding tank 211, outside percussion hammer 200
Curved surface guide portion 233 can be equipped on peripheral wall, the another part of bridgeware 232 can cooperate with curved surface guide portion 233.As a result,
The assembly relation of bridgeware 232, curved surface guide portion 233 and percussion hammer 200, guide part 210 may be implemented, so as to utilize conversion
The relative motion between matching relationship and bridgeware 232 and curved surface guide portion 233 between part 232 and curved surface guide portion 233, can
To realize relative motion of the percussion hammer 200 relative to guide part 210, percussion hammer 200 can along transmission shaft 10 axis direction relative to
Transmission shaft 10 is mobile.Bridgeware 232 is in the preset path that the motion profile of curved surface guide portion 233 is percussion hammer 200.
As shown in Fig. 2, Figure 16 and Figure 19, in some embodiments of the invention, steel ball is can be set into bridgeware 232,
As shown in Figure 11-Figure 12, it is preferable that in order to guarantee the intensity of steel ball, the diameter of steel ball is greater than 4mm and is less than or equal to 10mm, more
For preferably, the diameter of steel ball is more than or equal to 4mm and is less than or equal to 6mm, and the diameter of steel ball is 5mm in the present embodiment.Curved surface draws
Leading portion 233 can be set into cam surface or cam path.Cam surface or cam path can limit the active rail of steel ball as a result,
Mark, steel ball can have round and smooth outer surface, can not only reduce bridgeware in the interior activity of cam surface or cam path, steel ball
It is suitable to improve activity of the bridgeware 232 in curved surface guide portion 233 for relative motion frictional force between 232 and curved surface guide portion 233
Smooth property, and the structural strength of steel ball is big, abrasion resistance properties are good, so as to ensure the working performance of interval impact assembly 230.
It should be noted that " cam " mentioned herein can refer to that curved surface guide portion 233 protrudes from the internal perisporium of guide part 210,
Or curved surface guide portion 233 protrudes from the periphery wall of percussion hammer 200.
Further, steel ball can be that point or line contact with curved surface guide portion 233, it is to be understood that steel ball is in curved surface
In guide portion 233 during movement, it is always that a point or line contact that steel ball is contacted with curved surface guide portion 233, is conducive to subtract
Friction between few steel ball and curved surface guide portion 233.For example, the radius of curvature of cam surface can be essentially identical with the radius of steel ball
Or it is bigger, so as to improve the fitness of steel ball and cam surface, and then the Assembly stability of steel ball and cam surface is improved, it is wear-resisting
Property and service life.
It introduces the 40 carry out mode of mode tuning mechanism of handheld tool 1 below with reference to the specific structure of handheld tool 1 and cuts
The concrete form changed.
As shown in Figure 19-Figure 20, in some embodiments of the invention, mode tuning mechanism 40 includes being set to guide part
The first groove 212 on 210, the impact switch piece equipped with the second groove 431, impact switch piece are axially movable but not can be rotated
Be fixed in the shell of handheld tool 1, the specific switch piece that impacts is impact switching ring 430, and it is removable to impact switching ring 430
It is coated at percussion hammer 200 dynamicly.Wherein, when mode tuning mechanism 40 is located at first mode state, the first groove 212 and the second tooth
Line 431 engages；When mode tuning mechanism 40 is located at second mode state, the first groove 212 is spaced apart with the second groove 431.
It is understood that impact switching ring 430 is coated at percussion hammer 200, it can between impact switching ring 430 and percussion hammer 200
With relative movement, impact switching ring 430 is equipped with the second groove 431, and guide part 210 is equipped with the first groove 212, the first groove
212 can be cooperatively connected with the second groove 431, so as to which guide part 210 and impact switching ring 430 are connected,
At this point, impact switching ring 430 can limit the movement of guide part 210, guide part 210 and impact switching ring 430 are opposing stationary, hit
Hammer 200 can be moved linearly by preset path with counter-guide 210 and hit cutter spindle at least one operating state
30。
The position of ring 430 can also be switched by switching shock, so that the first groove 212 is spaced apart with the second groove 431,
At this point, guide part 210 is mobilizable, drive of the guide part 210 in interval impact assembly 230 relative to impact switching ring 430
Under, it can be rotated together with percussion hammer 200, percussion hammer 200 is relatively stationary with guide part 210.Thus, it is possible to by adjusting the
The matching relationship of one groove 212 and the second groove 431, with the positional relationship and dress of adjustable guiding part 210 and impact switching ring 430
With relationship, so as to control the motion state of guide part 210, and then the motion state of cutter spindle 30 can be improved, reach
Control the operating mode of handheld tool 1.
Further, as shown in Figure 19, Figure 21-Figure 26, mode tuning mechanism 40 further includes bolster 440, bolster 440
One end and impact switching ring 430 offset with normal promotions impact switching ring 430 towards guide part 210 movement.Bolster as a result,
440 can often push impact switching ring 430 close to guide part 210, so that the first groove 212 and the second groove 431
Cooperation.
Further, as shown in Figure 19-Figure 24, mode tuning mechanism 40 further includes mode selector button 450, mode selector button
450 are rotationally coated at impact switching ring 430, and mode selector button 450 can be rotated relative to impact switching ring 430, and mode is cut
The internal perisporium for changing button 450 is equipped with guiding block 451, and the periphery wall of impact switching ring 430 is equipped with cooperation compatible with guiding block 451
Block 432, rotation mode switch bar 450, wherein when guiding block 451 and coordinating block 432 axially offset, guiding block 451 pushes punching
It hits switching ring 430 and compresses bolster 440 to the direction movement far from guide part 210, between the first groove 212 and the second groove 431
It separates；When guiding block 451 and coordinating block 432 are staggered, impact switching ring 430 is under the action of bolster 440 to close to guiding
The direction of part 210 is mobile, and the first groove 212 is engaged with the second groove 431.
It is understood that can be switched by rotation mode switch bar 450 or impact switching ring 430 with switch mode
Positional relationship between button 450 and impact switching ring 430, to change the mated condition between guiding block 451 and coordinating block 432.
Thus, it is possible to by the matching relationship between switching guiding block 451 and coordinating block 432, to control the first groove 212 and the second tooth
Matching relationship between line 431.Further, as shown in figure 20, guiding block 451 has guide ramp 451a, is matched with guiding
Close block 432.Thus, it is possible to easily switch the matching relationship between guiding block 451 and coordinating block 432.
In other embodiments of the invention, mode tuning mechanism 40 can also use other structures, specifically, referring to
Fig. 2-Fig. 5, Fig. 9 and Figure 13, mode tuning mechanism 40 include stopping pressure ring 410 and mode tuning button 420.Only pressure ring 410 is coated at
Transmission shaft 10 is specifically sheathed on above-mentioned impact receiving unit 400, and only pressure ring 410 relative to transmission shaft 10 can be rotated but not
It is axially movable, and mode tuning button 420 is rotationally coated at only pressure ring 410.Only pressure ring 410 is equipped with retaining part 411, mode
The internal perisporium of adjusting knob 420 is equipped with the channel 422 for being suitable for passing through for retaining part 411, axis direction of the channel 422 along transmission shaft 10
Extend.
Wherein, when mode tuning mechanism 40 is located at first mode state, retaining part 411 is only supported with mode tuning button 420；
When mode tuning mechanism 40 is located at second mode state, retaining part 411 is corresponding with 422 position of channel, 30 energy of cutter spindle
Enough drive stops pressure ring along the axial movement of cutter spindle.Thus, it is possible to stop the retaining part 411 and mode of pressure ring 410 by adjusting
The relative positional relationship of adjusting knob 420 realizes the adjusting to 200 motion state of percussion hammer, so as to adjust cutter spindle 30
Operating mode.It is specific as Figure 3-Figure 4, mode tuning button 420 further includes be set to 420 internal perisporium of mode tuning button convex
Edge 421, flange 421 is annular in shape and extends along the circumferential direction for stopping pressure ring 410, and channel 422 is passed through along the axis direction of only pressure ring 410
Logical flange 421.Flange 421 can construct channel 422 as a result, and flange 421 can also only be supported with retaining part 411.
As Figure 3-Figure 4, in some embodiments of the invention, retaining part 411 includes fixed section 411a, linkage section
411b and cooperation section 411c.Fixed section 411a extends from only pressure ring 410, and one end of linkage section 411b and fixed section 411a connect
It connects, one end of cooperation section 411c is connect with the other end of linkage section 411b, and cooperation section 411c is suitable for through channel 422, fixed section
411a and linkage section 411b is spaced apart along the axis direction for stopping pressure ring 410.Further, linkage section 411b and fixed section 411a connects
The position rounding off connect；Alternatively, the position rounding off that linkage section 411b is connect with cooperation section 411c.
As shown in Figures 2 and 6, in some embodiments of the invention, the periphery wall for impacting receiving unit 400 has step surface
404, only pressure ring 410 is only supported with step surface 404.Step surface 404 can limit the movement of only pressure ring 410 as a result, avoid only pressure ring
410 are detached from from impact receiving unit 400.
Embodiment 4
As shown in Fig. 1-Figure 30, handheld tool 1 according to an embodiment of the present invention, including motor 60, transmission shaft 10, cutter master
Axis 30, hammering blow mechanism 20 and impact switching ring 430.
Specifically, the rotation direction of motor 60 includes first direction and second direction, in first direction and second direction
One can for clockwise, another for counterclockwise.Motor 60 can drive transmission shaft 10 to rotate.Cutter spindle
30 connect with transmission shaft 10, and cutter spindle 30 is movable relative to transmission shaft 10, for example, cutter spindle 30 is relative to transmission shaft 10
It can move.Hammering blow mechanism 20 includes percussion hammer 200 and guide part 210, and percussion hammer 200 is sheathed on 10 outside of transmission shaft, transmission shaft
10 can drive percussion hammer 200 to rotate.Handheld tool 1 according to an embodiment of the present invention is impacted by setting guide part 210 and interval
Component 230 can guide percussion hammer 200 and make line using interval impact assembly 230, the matching relationship of percussion hammer 200 and guide part 210
Property movement, and percussion hammer 200 can also hit cutter spindle 30, so as to realize the movement on 30 axis direction of cutter spindle,
So that cutter spindle 30, when drilling on environment component (such as metope or plate), cutter spindle 30, which forms environment component, to be impacted
Power, so as to improve the drilling efficiency of handheld tool 1, moreover, the structure setting of the handheld tool 1 of the embodiment of the present invention is compact
And structure is simple, can be convenient carrying.
As shown in Fig. 2, Fig. 5, Fig. 7 and Fig. 9-Figure 12, interval impact assembly 230 includes the energy accumulating machine abutted with percussion hammer 200
Structure 231 and the bridgeware 232 being set between guide part 210 and percussion hammer 200 and curved surface guide portion 233.Interval impact assembly
230 further include accumulating mechanism 231, and bridgeware 232 and curved surface guide portion 233 are respectively positioned between guide part 210 and percussion hammer 200, and
One end of accumulating mechanism 231 is abutted with percussion hammer 200.Thus, it is possible to pass through the concrete shape of constructing curve guide portion 233, to lead
Draw the motion profile of bridgeware 232, bridgeware 232 can realize with percussion hammer 200 and link that percussion hammer 200 is under the action of bridgeware
232 move along the track of curved surface guide portion 233.
Further, as shown in Figure 13 and Figure 17-Figure 18, baffle 100,100 housing of baffle can be equipped on transmission shaft 10
In the periphery wall of transmission shaft 10, accumulating mechanism 231 is between percussion hammer 200 and baffle 100, and accumulating mechanism 231 is far from percussion hammer 200
One end can cooperate with baffle 100.After percussion hammer 200 is moved a certain distance towards accumulating mechanism 231, percussion hammer 200 and baffle
100 can be with compress energy storage mechanism 231.Accumulating mechanism 231 can form motive force to percussion hammer 200 as a result,.Certainly, for accumulation of energy
The axial limited way of mechanism can also use other structures, and details are not described herein again.
As shown in Figure 11-Figure 12, in some embodiments of the invention, curved surface guide portion 233 can be formed as cyclic annular, bent
Face guide portion 233 can be surround along the circumferential direction of transmission shaft 10, specifically, curved surface guide portion 233 may include climbing section
233a and fall a section 233b, the one end for falling section 233b is connect with the one end for the section 233a that climbs, and falls the other end court of section 233b
Extend to the other end of climbing section 233a.Further, climbing section 233a can helically line style, falling section 233b can be in straight
Line style, and fall section 233b and extend along the axis direction of transmission shaft 10.Preferably, in order to guarantee percussion hammer to cutter spindle 30 formation
Enough impact forces, and the volume compact of handheld tool 1, climbing 233a height of climbing in the axial direction are greater than 3mm and small
In equal to 15mm, it is preferable that climbing height is more than or equal to 4mm and is less than or equal to 8mm, it is preferable that height of climbing is 5mm.
When bridgeware 232 and climbing section 233a cooperation, one end direction climbing section of the bridgeware 232 from climbing section 233a
The other end of 233a rolls, and percussion hammer 200 is mobile towards baffle 100, and percussion hammer 200 and baffle 100 can be with compress energy storage mechanisms 231；
When bridgeware 232, which falls section 233b positioned at the other end and direction of climbing section 233a, to be rolled, accumulating mechanism 231 can be pushed and be hit
Hammer 200 falls towards falling section 233b close to one end of baffle 100 close to the other end of tool heads from falling section 233b, namely hits
Hammer 200 is directed away from baffle 100 and quickly falls close to the directions of tool heads, and percussion hammer 200 a part of close simultaneously hits cutter
Main shaft 30 is located at the part in 10 outside of transmission shaft, so that cutter spindle 30 is relative to transmission shaft 10 along the axis of transmission shaft 10
Direction is mobile, and percussion hammer 200 forms the hammering to cutter spindle 30 and tool heads.
Further, as shown in Fig. 7, Figure 15, the end face of the close accumulating mechanism 231 of percussion hammer 200 can be equipped with mounting groove
203, the end of accumulating mechanism 231 can be located in mounting groove 203, and the end of accumulating mechanism 231 can be with the bottom of mounting groove 203
Wall offsets.Thus, it is possible to improve the Assembly stability of accumulating mechanism 231 Yu percussion hammer 200.
As shown in figure 12, in some embodiments of the invention, curved surface guide portion 233 may include that multistage is segmented, and every section
Segmentation includes that a climbing section 233a and one falls a section 233b.Bridgeware 232 can be to be multiple, and multiple bridgewares 232 can edge
The circumferential direction of percussion hammer 200 is spaced apart.The present embodiment in order to guarantee the reasonability of handheld tool whole design, middle percussion hammer 200
Outer diameter is between 15mm-50mm, it is preferable that between 20mm-40mm, slope height is greater than 3mm and is less than or equal to percussion hammer outer diameter
15mm, it is preferable that climbing height is more than or equal to 4mm and is less than or equal to 8mm, it is further preferable that climbing height is 5mm.It can manage
Xie Di, in order to guarantee that bridgeware 232 can smoothly climb, it is preferable that segments is 2 to 7, and particularly advantageously segments is 3-
4, the number of segment for the section 233a that climbs in the present embodiment is preferably 3.
It should be noted that by above-mentioned introduction it is found that bridgeware 232 and curved surface guide portion 233 are located at percussion hammer 200 and guiding
Between part 210, specifically, bridgeware 232 is located at 200 alternative one of guide part 210 and percussion hammer, curved surface guide portion 233, which is located at, to be led
To the another of 200 the two of part 210 and percussion hammer.As exemplified in figs, in other examples of the invention, bridgeware 232 can
To be located on guide part 210, curved surface guide portion 233 is located on percussion hammer 200.It is accommodated for example, the internal perisporium of guide part 210 is equipped with
Slot 211, a part of of bridgeware 232 can be located in holding tank 211, and curved surface can be equipped on the periphery wall of percussion hammer 200 and is guided
The another part in portion 233, bridgeware 232 can cooperate with curved surface guide portion 233.As exemplified in figs, of the invention another
In some examples, bridgeware 232 can be located on guide part 210, and curved surface guide portion 233 is located on percussion hammer 200.For example, guiding
The internal perisporium of part 210 is equipped with holding tank 211, and a part of of bridgeware 232 can be located in holding tank 211, outside percussion hammer 200
Curved surface guide portion 233 can be equipped on peripheral wall, the another part of bridgeware 232 can cooperate with curved surface guide portion 233.As a result,
The assembly relation of bridgeware 232, curved surface guide portion 233 and percussion hammer 200, guide part 210 may be implemented, so as to utilize conversion
The relative motion between matching relationship and bridgeware 232 and curved surface guide portion 233 between part 232 and curved surface guide portion 233, can
To realize relative motion of the percussion hammer 200 relative to guide part 210, percussion hammer 200 can along transmission shaft 10 axis direction relative to
Transmission shaft 10 is mobile.Bridgeware 232 is in the preset path that the motion profile of curved surface guide portion 233 is percussion hammer 200.
Continuing with referring to shown in Figure 11 and Figure 12, above-mentioned climb is equipped with due to being located inside guide part 210 in the present invention
Slope section and falls a section 233b at 233a, and when motor 60 rotates forward, at " under conflicting model ", percussion hammer 200 hits cutter spindle 30,
Realize hammer action, but when motor 60 rotates backward, above-mentioned bridgeware 232, which then needs to cross, to be fallen section 233b and move
To climbing section 233, it is parallel to fall section 233b almost coaxial line for but the impact effect in order to guarantee percussion hammer 200, so when conversion
For part 232 in axial-rotation, bridgeware 232, which can not be crossed, falls a section 233b, causes motor " stall ", or even burns machine.
Therefore, 8- Figure 30, handheld tool 1 further include the non-rotatable impact ring 11a for being fixed on shell 80 referring to fig. 2,
Impact ring 11a is equipped with the first end tooth 12a, and guide part 210 is equipped with the second end tooth that can be engaged with the first end tooth 12a
213a, when motor 60 is rotated in a first direction, the first end tooth 12a passes through the second end tooth 213a restricted guidance part engaged
213 rotations, bridgeware 232, which is moved along curved surface guide portion by preset direction, makes the percussion hammer 200 at least one operating state
Hit cutter spindle 30；When motor 60 is rotated in a second direction, the drive of the second end tooth 213a and guide part 213 in motor 60
Relative to the second end tooth 213a on the first end tooth 12a rotation engaged namely guide part 213 relative to first end under dynamic
Tooth 12a carries out slope climbing movement.First end tooth 12a includes several first teeth 121a, and the first teeth 121a includes guide section 121b
It is connect with backstop section 121c, guide section 121b with the free end of the backstop section 121c, the second end tooth 213a is by several
Two teeth 2131a composition, when motor 60 is rotated in a first direction, the second teeth 2131a is moved to by backstop section 121c
Guide section 121b, the backstop section 121c abuts the second teeth 2131a, so that the guide part 210 can not rotate；When described
When motor 60 is rotated along the second direction, when the second teeth 2131a moves to backstop section 121c by guide section 121b, the second tooth
Tooth 2131a can be moved along guide section 121b, so that the guide part 213 is rotated relative to the first end tooth 12a.The guiding
The section 121b and backstop section 121c is successively spaced setting along the circumferential direction of the first end tooth 12a, and the backstop section 121c is parallel to
The axis of transmission shaft 10.When the second teeth 2131a moves to guide section 121b, the second teeth 2131a by backstop section 121c
The backstop section 121c is parallel to the side abutted backstop section 121c.Impact ring 11a can be axially moveable, to realize first
End tooth 12a is engaged or is separated with the second end tooth 213a, when the first end tooth 12a is separated with the second end tooth 213a, is led
To being rotated by the motor of part 210, the tool is in non-percussion mode.It is understood that in the present embodiment
When impact ring 11a is axially movable, the impact ring 11a in the present embodiment not only has the function of " blocking rotation ", also has
The function that impact switching ring 430 is realized described in above-mentioned other embodiments of the invention, in other words, in above-mentioned implementation
In example, by the way that the groove of first groove 212 of above-described embodiment and the second groove 431 is shaped to first in the present embodiment
The teeth shape of teeth 121a and the second teeth 2131a, then the pattern switching mechanism 40 in above-described embodiment not only has mode
Handoff functionality also has the anti-blocking rotating function under conflicting model.
As shown in Fig. 5, Fig. 8-Figure 10, Figure 13 and Figure 15, according to some embodiments of the present invention, hammering blow mechanism 20 also has
There is a disengagable clutch 220, clutch 220 is arranged for transmitting the rotation between transmission shaft 10 and percussion hammer 200
Transhipment is dynamic.It is understood that clutch 220 can be such that transmission shaft 10 and percussion hammer 200 cooperates, clutch 220 can also be with
Transmission shaft 10 and percussion hammer 200 are disengaged, when clutch 220 makes transmission shaft 10 and percussion hammer 200 cooperates, the rotation of transmission shaft 10
Movement can pass to percussion hammer 200 by clutch 220, so that percussion hammer 200 be driven to rotate；When clutch 220 makes the two
When disengagement, the matching relationship between clutch 220 and percussion hammer 200 is released, and transmission shaft 10 is rotated relative to percussion hammer 200, percussion hammer
200 is static relative to guide part 210.Thus, it is possible to the movement of percussion hammer 200 be controlled by clutch 220, to control percussion hammer
Whether 200 hit cutter spindle 30, and then can change the working condition of handheld tool 1.In some embodiments of the invention,
Clutch 220 is configured to be closed by one via the power that cutter spindle 30 transmits.It is understood that clutch 220
It can be controlled by cutter spindle 30 between percussion hammer 200 with the presence or absence of matching relationship, cutter spindle 30 can be to clutch
220 apply external force, to change the relationship between clutch 220 and percussion hammer 200, as tool heads or cutter spindle 30 are connected to work
When condition (namely cutter spindle 30 by an axial load when), clutch 220 is closed, and hand-held tool 1 is switched to impact shape
State.
As shown in figure 5, the cutter spindle 30 can be relative to transmission shaft 10 in first position via the effect of an axial force
Switch between the second position, when the cutter spindle 30 is at the second position, the percussion hammer 200 can be by the transmission shaft 10
Driving is rotated and can be moved relative to the guide part 210 by preset path, thus at least one operating state along institute
The axis for stating cutter spindle 30 hits the cutter spindle 30；When the cutter spindle 30 is at first position, the transmission shaft
10 can not drive the percussion hammer 200 to rotate.The cutter spindle 30 includes the connecting pin connecting with the transmission shaft 10, Yi Jiyu
The output end of the tool heads connection, transmission shaft 10 are equipped with the cavity 120 of axially open, cavity 120 close to the side of connecting pin
It can extend along the axis direction of transmission shaft 10, the connecting pin of cutter spindle 30 is protruded into 120 in cavity from opening, cavity
The outer wall of 120 30 connecting pin of inner wall and cutter spindle passes through the spline 370 axially extended and cooperates, so that cutter spindle 30 can
It moves axially and can be rotated together with transmission shaft 10 relative to transmission shaft 10.Specifically, as shown in Fig. 2, cutter spindle 30
The inner wall of outer wall and cavity 120 is equipped with convex ribs 340, and is formed between the adjacent convex ribs 340 on cutter spindle 30 radial recessed
Sunken groove 350, so that 120 inner wall of cavity can cooperate with groove 350.
With continued reference to Fig. 5, Fig. 8-Figure 10, Figure 13 and Figure 15, the side wall of cavity 120 is equipped with radial hole 110, radial hole
110 the radial direction Through-cavity 120 of transmission shaft 10 side wall, clutch part 221 is located in radial hole 110 and can be in radial direction
It is moved in hole 110, above-mentioned receiving portion 201 can be equipped on the internal perisporium of percussion hammer 200.Referring to Figure 13 and Figure 15, work as clutch
When structure 220 is in disengaged condition namely when cutter spindle 30 moves to the second position, radial hole 110 with above-mentioned groove 350
To set corresponding, radially hole 110 moves clutch part 221 to the receiving portion 201 far from percussion hammer 200 and close to the direction of groove 350,
So that clutch part 221 realizes the disengagement with percussion hammer 200；Referring to Fig. 9 and Figure 10, when clutch 220 is in closed state, namely
When cutter spindle 30 moves to the second position, groove 350 is no longer corresponding with above-mentioned 110 position of radial hole namely cutter spindle
There is no the space accommodated for clutch part 221, process of the cutter spindle 30 in movement at position corresponding with radial hole 110 on 30
It is middle to squeeze clutch part 221 so that clutch part 221 is moved along radial hole 110 to close to 221 direction of receiving portion of percussion hammer, make clutch
A part of part 221 is located in radial hole 110, while another part is located in receiving portion 201, and percussion hammer 200 is rotated in clutch part
It can be rotated together with transmission shaft 10 under the action of 221.It should be noted that in other embodiments of the invention, it is above-mentioned
Cavity 120 can also be located at the connecting pin of cutter spindle 30, and cavity 120 is protruded into one end that transmission shaft 10 is connect with cutter spindle 30
It is interior.
Embodiment 5
The handheld tool 1 of multiple embodiments according to the present invention is described in detail below with reference to Fig. 1-Figure 27.It is worth understanding,
It is described below to be merely illustrative, rather than to concrete restriction of the invention.
As shown in Fig. 1-Figure 15, the handheld tool 1 of the embodiment of the present invention include motor 60, transmission shaft 10, cutter spindle 30,
Return unit 70, hammering blow mechanism 20, impact receiving unit 400, only pressure ring 410 and mode tuning button 420.
Specifically, motor 60 is connect with transmission shaft 10, motor 60 can drive transmission shaft 10 along the axis of transmission shaft 10
Line direction rotates, and transmission shaft 10 is rotated around the axis of transmission shaft 10.Transmission shaft 10 can be formed as tubular open at one end,
I.e. transmission shaft 10 can form cavity 120 open at one end, and cavity 120 can extend along the axis direction of transmission shaft 10, knife
Tool main shaft 30 can go deep into transmission shaft 10 from one end that cavity 120 is open, and the other end of transmission shaft 10 can form flat
140, and torque transmitting is carried out by flat 140 and motor 60, return unit 70 is located in cavity 120, and one end of return unit 70
It is axially abutted with cutter spindle 30, the other end of return unit 70 is abutted with cavity 120 far from the bottom wall of opening.Return unit 70 can be with
Often push cutter spindle 30 mobile from 120 bottom wall of cavity to the opening extreme direction of cavity 120.
As shown in Fig. 2, cutter spindle 30 may include first segment 310, second segment 320 and close to one end of transmission shaft 10
Three section 330, first segment 310 is connect with 320 one end of second segment, and one end of second segment 320 is connect with third section 330.First segment 310
Axis be overlapped with the axis of third section 330, third section 330 is fully inserted into the cavity 120 of transmission shaft 10, first segment 310
A part can protrude into cavity 120, and another part of first segment 310 is located at outside cavity 120, the cross section half of third section 330
Diameter is less than the cross sectional radius of first segment 310, and the periphery wall of second segment 320 is cambered surface.The periphery wall of third section 330 is equipped with more
A convex ribs 340, multiple convex ribs 340 are intervally arranged along the circumferential direction of third section 330, any one convex ribs 340 is each along
Three section 330 of axis direction extends, and the adjacent convex ribs 340 of any two can be configured to groove 350.
Multiple convex blocks can be equipped on the internal perisporium of transmission shaft 10 corresponding to cavity 120, multiple convex blocks are along transmission shaft
10 circumferential direction is intervally arranged, any one convex block extends each along the axis direction of transmission shaft 10.Any two are adjacent
Convex block can be configured to a mating groove, and the corresponding mating groove of any one convex ribs 340, each convex ribs 340 can protrude into it
In corresponding mating groove.When transmission shaft 10 rotates, convex ribs 340 can be at least one in two convex blocks corresponding to mating groove
It is a to offset, so as to drive cutter spindle 30 to rotate along the circumferential direction of transmission shaft 10.In the axis direction of transmission shaft 10
On, cutter spindle 30 can be moved relative to transmission shaft 10, and cutter spindle 30 can be completed on the axis direction of transmission shaft 10
Sliding.
As shown in Fig. 5, Fig. 8-Figure 10 and Figure 13, Figure 15, hammering blow mechanism 20 includes percussion hammer 200, guide part 210, clutch
Mechanism 220 and interval impact assembly 230.Wherein, clutch 220 includes clutch part 221 and receiving portion 201, interval impact group
Part 230 includes accumulating mechanism 231, bridgeware 232 and curved surface guide portion 233.
As shown in Fig. 5, Fig. 8-Figure 10 and Figure 13, Figure 15, percussion hammer 200 is coated at the periphery wall of transmission shaft 10, and percussion hammer 200 leans on
The nearly one end of transmission shaft 10 far from return unit 70, the internal perisporium of percussion hammer 200 are spaced apart with the periphery wall of transmission shaft 10.It is inside placed on and hits
Radial hole 110 can be equipped on the section transmission axis 10 of hammer 200, radial hole 110 penetrates through transmission in the radial direction of transmission shaft 10
Axis 10, clutch part 221 can be located in radial hole 110, and clutch part 221 can move in radial hole 110.Percussion hammer 200 it is interior
Receiving portion 201 can be equipped on peripheral wall, receiving portion 201 can penetrate through percussion hammer 200, receiving portion along the axis direction of transmission shaft 10
201 can be set into groove body 201a, can pass through the radial outside by a part of the internal perisporium of percussion hammer 200 towards percussion hammer 200
For recess to construct groove body 201a, steel ball is can be set into clutch part 221.Steel ball size is more than or equal to 3mm and is less than or equal to
8mm.The bottom wall of groove body 201a can be formed as arcwall face, and arcwall face can be recessed towards the radial outside of percussion hammer 200.
When clutch 220 in the closure state, steel ball is moved between transmission shaft 10 and percussion hammer 200, i.e. steel ball
A part is located in radial hole 110, part steel ball when another part of steel ball is located in groove body 201a, in groove body 201a
It can cooperate with groove body 201a and offset, when steel ball is rotated with transmission shaft 10, steel ball can drive percussion hammer 200 along transmission shaft
10 circumferential direction rotation.When clutch 220 is in disengaged position, when steel ball is moved to transmission shaft 10 and cutter spindle 30
Between when, i.e., a part of steel ball is located in radial hole 110, when another part of steel ball is located in groove 350, transmission shaft 10 with
Percussion hammer 200 is spaced apart, and percussion hammer 200 remains static.
It should be noted that the position of steel ball can be carried out by cutter spindle 30 relative to the positional relationship of transmission shaft 10
Switching.When tool heads are in running order and bear axial abutting force from operating condition namely cutter spindle 30 is towards close
When the direction of return unit 70 is mobile, return unit 70 compresses, and the first segment 310 and through hole 110 of cutter spindle 30 are opposite, first segment
310 can squeeze steel ball, and steel ball is moved radially along through hole 110 to groove body 201a out of groove 350, steel ball a part with pass through
Through-hole 110 cooperates, and another part and groove body 201a cooperate, thus, 10 percussion hammer 200 of transmission shaft rotation, clutch 220 is in and nibbles
Conjunction state, handheld tool 1 are in above-mentioned impact conditions；When the axial force from operating condition disappears, cutter spindle 30 is resetting
Under the action of part 70, to close to the movement of the direction of tool heads, cutter spindle 30 is by first segment 310 and 110 relative motion of through hole
Opposite to third section 330 and through hole 110, therefore, first segment 310 no longer squeezes steel ball, steel ball edge under the action of percussion hammer 200
Through hole 110 is moved in groove 350 and is detached from groove body 201a, and transmission shaft 10 can not drive percussion hammer 200 to rotate, clutch
Structure 220 is in disengaged position.Referring to Figure 15, in the present embodiment, when clutch 220 is in disengaged position, steel ball is still kept
It is at least partially disposed in through hole 110, to facilitate clutch 220 to switch between meshing state and disengaged position.
As shown in Fig. 5, Fig. 8-Figure 10 and Figure 13, Figure 15, guide part 210 is coated at the periphery wall of percussion hammer 200, guide part
Curved surface guide portion 233 is formed on 210 internal perisporium, curved surface guide portion 233 can be formed as cyclic annular, and curved surface guide portion 233 can be with
Circumferential direction along transmission shaft 10 is surround.Curved surface guide portion 233 may include multistage segmentation, and every section of segmentation is corresponding with one and turns
Change part 232.Every section of segmentation includes climbing section 233a and falls a section 233b.Climb section 233a can helically line style, fall section
233b can be of a straight line type.Bridgeware 232 can be set to steel ball.
It in other embodiments of the invention, is led unlike Fig. 1-embodiment shown in figure 15 referring to Figure 16-18
Holding tank 211 can be equipped on the internal perisporium of part 210, a part of of bridgeware 232 can be located in holding tank 211, and turn
It changes part 232 to be connect with guide part 210 (as being clamped), curved surface guide portion 233, bridgeware can be equipped on the periphery wall of percussion hammer 200
232 another part can cooperate with curved surface guide portion 233.
Such as Fig. 5, Fig. 7-Figure 10, Figure 13, Figure 15, percussion hammer 200 can be equipped with mounting groove 203 towards the end face of return unit 70.
Baffle 100 can be equipped on transmission shaft 10, baffle 100 is coated at the periphery wall of transmission shaft 10, and baffle 100 and transmission shaft 10 connect
It connects, baffle 100 and mounting groove 203 are opposite.Accumulating mechanism 231 is between percussion hammer 200 and baffle 100, and the one of accumulating mechanism 231
End can be protruded into mounting groove 203, and the end of accumulating mechanism 231 can offset with the bottom wall of mounting groove 203, accumulating mechanism 231
The other end can offset with baffle 100.Accumulating mechanism 231, which can be set, circularizes spring, and ring spring can be externally fitted to pass
Moving axis 10.
As shown in Fig. 2, Fig. 5, Fig. 1, Fig. 9-Figure 10 and Figure 13, embedded groove 202 can be equipped on the periphery wall of percussion hammer 200,
The a part of of bridgeware 232 can be located in embedded groove 202, connect bridgeware 232 with percussion hammer 200, be located at outside embedded groove 202
The a part of of the bridgeware 232 in portion can cooperate with curved surface guide portion 233, allow bridgeware 232 along curved surface guide portion 233
It is mobile, so that percussion hammer 200 moves under the drive of 10 rotary force of transmission shaft along the path of curved surface guide portion 233.
When bridgeware 232 and climbing section 233a cooperation, other end direction climbing section of the bridgeware 232 from climbing section 233a
One end of 233a rolls, and percussion hammer 200 is mobile towards baffle 100, and percussion hammer 200 and baffle 100 can be with compress energy storage mechanisms 231；When
Bridgeware 232 is located at one end of climbing section 233a and towards when falling section 233b and rolling, and accumulating mechanism 231 can often push percussion hammer
200 fall from the one end for falling section 233b towards the other end for falling section 233b, and percussion hammer 200 is directed away from the direction of baffle 100
It is mobile.
As shown in Fig. 5, Fig. 9 and Figure 13, impact receiving unit 400 can be equipped on cutter spindle 30, impact receiving unit 400 can
To be fixedly connected with cutter spindle 30, impact receiving unit 400 is formed as ring-type, and impact receiving unit 400 can be externally fitted to cutter
The first segment 310 of main shaft 30, impact receiving unit 400 are located at outside transmission shaft 10, and impact receiving unit 400 is connect with cutter spindle 30
(such as clamping or welding).After percussion hammer 200 is directed away from direction movement a distance of baffle 100, percussion hammer 200 can be with punching
The contact of receiving unit 400 is hit, and due to the impetus of accumulating mechanism 231, percussion hammer 200 can be to the impact formation of receiving unit 400
The function and effect of shock, so that cutter spindle 30 can be directed away from return unit along the axis direction of transmission shaft 10
70 direction is mobile.
Since the environment component (such as metope or plate) to be drilled by handheld tool 1 has load effect to cutter spindle 30,
Cutter spindle 30 again can be towards, such circulation, so that cutter spindle 30 mobile close to the direction of return unit 70
To rotate under the induced effect of transmission shaft 10 along the circumferential direction of transmission shaft 10, cutter spindle 30 again can be in percussion hammer 200
Effect of impact and environment component external force under moved along the axis direction of transmission shaft 10.
Handheld tool 1 is described above in working condition namely tool heads are under the action of axial force, handheld tool 1
It can be realized hammering function.But in practical operation, some operating conditions operator does not need hammering function, therefore, the present invention
Handheld tool also there is mode tuning mechanism 40.
As shown in fig. 6, the periphery wall of impact receiving unit 400 may include first surface 401, second surface 402 and third
Surface 403, first surface 401 are connect with one end of second surface 402, and the other end of second surface 402 and third surface 403 connect
It connects, first surface 401 is consistent with the extending direction on third surface 403, and first surface 401 and third surface 403 are received in impact
Portion 400 is spaced apart in the radial direction, and first surface 401 is located at the radial outside on third surface 403.First surface 401, second
Surface 402 and third surface 403 are configured to step surface 404.Only pressure ring 410 is coated at impact corresponding to third surface 403 and connects
Receipts portion 400, impact receiving unit 400 corresponding to first surface 401 only can will be axially confined in third surface 403 by pressure ring 410
On.
As shown in figures 3 to 6, mode tuning button 420 is rotationally coated at only pressure ring 410,.Only pressure ring 410, which is equipped with, only supports
Portion 411, the internal perisporium of mode tuning button 420 are equipped with flange 421, and flange 421 is annular in shape and prolongs along the circumferential direction for stopping pressure ring 410
It stretches, flange 421 can construct channel 422, and channel 422 penetrates through flange 421, retaining part 411 along the axis direction of only pressure ring 410
Channel 422 can be passed through.
As Figure 3-Figure 4, retaining part 411 includes fixed section 411a, linkage section 411b and cooperation section 411c.Fixed section
411a extends from only pressure ring 410, and one end of linkage section 411b is connect with fixed section 411a, cooperates one end and the connection of section 411c
The other end of section 411b connects, and cooperation section 411c is suitable for through channel 422, fixed section 411a and linkage section 411b along only pressure ring
410 axis direction is spaced apart.The position rounding off that linkage section 411b is connect with fixed section 411a, linkage section 411b and cooperation
The position rounding off of section 411c connection.
Wherein, when retaining part 411 and mode tuning button 420 only support, only pressure ring 410 is quiet relative to mode tuning button 420
Only, only pressure ring 410 is further only supported with impact receiving unit 400 corresponding to the first face 401, and impact receiving unit 400 is static, punching
The movement that receiving unit 400 further limits cutter spindle 30 is hit, the external force that environment component applies cutter spindle 30 cannot drive
Cutter spindle 30 is mobile, and between cutter spindle 30 and transmission shaft 10, percussion hammer 200 is spaced apart clutch part 221 with transmission shaft 10,
Motor 60 drives transmission shaft 10 to rotate, and transmission shaft 10 is further driven to the rotation of cutter spindle 30, and cutter spindle 30 only rotates fortune
It is dynamic.
When retaining part 411 is located in channel 422, retaining part 411 can move in channel 422, and environment component is to knife
It is mobile towards return unit 70 to have the outer power drive cutter spindle 30 that main shaft 30 applies, and then clutch part 221 is driven to be placed in transmission shaft
Between 10 and percussion hammer 200, transmission shaft 10 can drive percussion hammer 200 to rotate, and percussion hammer 200 is in bridgeware 232 and curved surface guide portion 233
Mating reaction under can be moved along the axis direction of transmission shaft 10, and impact receiving unit 400 impacts receiving unit 400
May further drive only pressure ring 410 moved in the inner ring of mode tuning button 420, cutter spindle 30 both have axis direction on
Movement, and with the rotation in circumferential direction.
Mode tuning mechanism 40 can also be other structures in other embodiments of the invention.
Unlike Fig. 1-embodiment shown in figure 15, in the embodiment shown in Figure 19-Figure 26, mode tuning mechanism
40 include impact switching ring 430, bolster 440 and mode selector button 450.Specifically, guide part 210 has the first groove
212, mode tuning mechanism 40 includes impact switching ring 430, and impact switching ring 430 is movably coated at percussion hammer 200, and impact is cut
Ring change 430 has second groove 431 compatible with the first groove 212.One end of bolster 440 switches 430 phase of ring with impact
It is mobile towards guide part 210 to switching ring 430 is impacted with normal promotion.Mode selector button 450 is rotationally coated at impact switching
Ring 430, mode selector button 450 can be rotated relative to impact switching ring 430, and the internal perisporium of mode selector button 450 is equipped with guiding block
451, the periphery wall of impact switching ring 430 is equipped with coordinating block 432 compatible with guiding block 451, and impacting switching ring 430 can axis
To movement but it is non-rotatably fixed to shell.
Rotation mode switch bar 450, wherein when guiding block 451 and coordinating block 432 offset, the first groove 212 and second
Groove 431 be spaced apart, at this point, guide part 210 relative to impact switching ring 430 be it is mobilizable, guide part 210 interval impact
Under the drive of component 230, it can be rotated together with percussion hammer 200, percussion hammer 200 is relatively stationary with guide part 210, therefore,
Percussion hammer 200 will not hit cutter spindle 30；Mode selector button 450 is continued to rotate, when guiding block 451 is staggered with coordinating block 432,
First groove 212 is engaged with the second groove 431, so as to which guide part 210 is connected in impact switching ring 430, at this point,
Impact switching ring 430 can limit the movement of guide part 210, and guide part 210 and impact switching ring 430 are opposing stationary, percussion hammer 200
It can be moved linearly with counter-guide 210 by preset path and hit cutter spindle 30 at least one operating state.This
Embodiment realizes the axial movement of impact switching ring 430 by rotation mode switching 450, in other embodiments in order to realize
The axial movement of impact switching ring can also be arranged and impact the toggle that switching ring 430 connects, axial by stirring toggle progress
It is mobile directly to drive the axial movement of impact switching ring 450.
As shown in figure 20, the first groove 212 includes lug boss 212a.Second groove 431 includes lead segment 431a and only supports
Section 431b, lead segment 431a may include flat segments and tilting section, and one end of tilting section is connect with the free end of only support segment 431b,
The other end of tilting section and one end of flat segments connect.Only support segment 431b extends along the axis direction of impact switching ring 430, puts down
Straight section is vertical with only support segment 431b.Only support segment 431b can have multiple, and multiple only support segment 431b can be along the week of guide part 210
It is intervally arranged to direction, there is a lead segment 431a, any one lead segment between the adjacent only support segment 431b of any two
Stop support segment 431b with two adjacent respectively in the both ends of 431a.Lug boss 212a can have multiple, multiple lug boss 212a and more
A only support segment 431b is corresponded.Lug boss 212a can be formed as triangle.The free end of lug boss 212a can be formed as
Tip 212a1.
Wherein, when motor 60 rotates forward, there are two kinds of situations, one of situations are as follows: guiding block 451 and coordinating block 432
It offsets, the first groove 212 is spaced apart with the second groove 431, at this point, guide part 210 is movable relative to impact switching ring 430
, guide part 210 can rotate together, percussion hammer 200 and guide part under the drive of interval impact assembly 230 with percussion hammer 200
210 are relatively stationary；Another situation are as follows: when guiding block 451 and coordinating block 432 are staggered, lug boss 212a is supported with stopping
Section 431b is only supported, and the first groove 212 and the second groove 431 are opposing stationary, so as to which guide part 210 and impact are switched ring
430 connect, at this point, impact switching ring 430 can limit the movement of guide part 210, guide part 210 and impact switching ring
430 is opposing stationary, and percussion hammer 200 can be moved linearly by preset path with counter-guide 210 and at least one operating status
Middle shock cutter spindle 30.When motor 60 inverts, lug boss 212a can be slided along lead segment 431a, the first groove 212
Relative rotation can be formed between the second groove 431, guide part 210 can be rotated relative to impact switching ring 430, guide part
210 can rotate with percussion hammer 200.
In in the related technology, when the first groove 212 and the second groove 431 contact connectio, guide part 210 and impact switch
Ring 430 is opposing stationary, when motor 60 inverts, falls at section 233b since bridgeware 232 is only against, can hinder turning for motor 60
It is dynamic, so that the performance of guide part 210 and motor 60 can be damaged, influence the service life of handheld tool 1.Compared to the relevant technologies, originally
1 Consideration of handheld tool of inventive embodiments is more, has good security performance.
Unlike embodiment shown in Figure 20, in the embodiment shown in Figure 28-Figure 30, handheld tool 1 further includes
The non-rotatable impact ring 11a for being fixed on shell 80, impact ring 11a are equipped with the first end tooth 12a, and guide part 210 is equipped with
The the second end tooth 213a that can be engaged with the first end tooth 12a, when motor 60 is rotated in a first direction, the first end tooth 12a passes through
The second end tooth 213a restricted guidance part 213 rotation engaged, bridgeware 232, which is moved along curved surface guide portion by preset direction, to be made
The percussion hammer 200 hits cutter spindle 30 at least one operating state；When motor 60 is rotated in a second direction, second end
Tooth 213a and guide part 213 are under the driving of motor 60 relative to the first end tooth 12a rotation engaged namely guide part
The second end tooth 213a on 213 carries out slope climbing movement relative to the first end tooth 12a.First end tooth 12a includes several first teeth
121a, the first teeth 121a include the freedom of guide section 121b and backstop section 121c, guide section 121b and the backstop section 121c
End connection, the second end tooth 213a is made of several second teeth 2131a, described when motor 60 is rotated in a first direction
Second teeth 2131a moves to guide section 121b by backstop section 121c, and the backstop section 121c abuts the second teeth 2131a, from
And the guide part 210 can not rotate；When the motor 60 is rotated along the second direction, the second teeth 2131a is by leading
When moving to backstop section 121c to section 121b, the second teeth 2131a can be moved along guide section 121b, thus the guide part
213 rotate relative to the first end tooth 12a.The guide section 121b and backstop section 121c along the first end tooth 12a it is circumferential according to
Minor tick setting, and the backstop section 121c is parallel to the axis of transmission shaft 10.When the second teeth 2131a is by backstop section
121c moves to the side abutted guide section 121b, the second teeth 2131a and backstop section 121c and is parallel to the backstop section 121c.
Impact ring 11a can be axially moveable, to realize that the first end tooth 12a is engaged or separated with the second end tooth 213a, when described first
When end tooth 12a is separated with the second end tooth 213a, guide part 210 is rotated by the motor, and the tool is in
Non-percussion mode.It is understood that the impact ring in the present embodiment when impact ring 11a is axially movable, in the present embodiment
11a not only has the function of " blocking rotation " also there is the impact described in above-mentioned other embodiments of the invention to switch ring
430 functions of being realized.
Referring to shown in Figure 31, the present invention provides when another implementation, percussion hammer 200 is sheathed on transmission shaft in the embodiment
Outside 10, realize that transmission shaft 10 is connect with the selectively rotation of percussion hammer 200 by clutch part 221,200 counter-guide of percussion hammer
The axial movement of percussion hammer 200 is realized in 210 rotation, while compressed spring i.e. accumulating mechanism carry out accumulation of energy, when percussion hammer 200
After completing climbing, under the action of accumulating mechanism, the axis along cutter spindle 30 is quickly transported towards the free end of cutter spindle 30
It is dynamic, and then realize the axial impact to cutter spindle 30.During 200 impact tool main shaft 30 of percussion hammer, 200 direction of percussion hammer
There is a face to be contacted on that end face of 30 free end of cutter spindle with cutter spindle 30, which is referred to as on percussion hammer 200
" striking face ".In the embodiment, striking face 2001 on percussion hammer 200 is with respect to percussion hammer 200 towards 30 free end of cutter spindle
Outwardly protruded for other faces on that side end face, that is to say, that percussion hammer 200 towards 30 free end of cutter spindle that
It is staged end face on side end face, and hits the striking face 2001 contacted with cutter spindle 30 and be higher than other end faces, i.e. striking face
2001 other opposite end faces are closer to the free end of cutter spindle 30.It is lower than other end faces relative to striking face, striking face is higher than
Other end faces, which are advantageous in that, can obtain higher target efficiency, better impact effect.Higher target efficiency and more
The loss that good impact effect is mainly reflected in Impact energy in knockout process reduces.Herein, the freedom of cutter spindle 30
End refers to that one end of the separate motor on that one end, that is, cutter spindle of work head on cutter spindle 30.
In this embodiment, percussion hammer 200 is located at 210 inner circumferential side of guide part, and curved surface guide portion 233 is arranged in percussion hammer 200
Between guide part 210, which can make percussion hammer for percussion hammer is distributed in the scheme of guide part outer circumferential sides
Striking face 2001 on 200 and then can obtain higher target efficiency closer to the axis of cutter spindle 30, that is, impact
Energy loss in journey can be less.
In addition, the diameter range of striking face also can if it can match with the diameter of cutter spindle on percussion hammer
Improving the energy loss in impact effect, that is, knockout process to a certain extent can be reduced.In this embodiment, percussion hammer 200
The diameter range of upper striking face 2001 can selection range be 6-25 millimeters.Striking face and cutter spindle on percussion hammer described herein
Diameter, which matches, refers to that striking face and cutter spindle are in contact on cutter spindle with striking face in knockout process on percussion hammer
Part end face, can be referred to as to be knocked face, be knocked the diameter in face on percussion hammer on the diameter and cutter spindle of striking face
It is consistent as much as possible, so that it may be interpreted as matching.
If percussion hammer 200 abuts directly against on the transmission shaft 10, then process is moved axially with respect to transmission shaft 10 in percussion hammer 200
In, due to contacting friction during percussion hammer 200 and the torque of cooperation transmitting for a long time of clutch part 221, percussion hammer 200 can be generated in inner surface
Hangnail can especially reduce the impact energy of the output of percussion hammer 200 to cutter spindle 30 to influence the axial movement of percussion hammer 200.For
It solves the above problems, in this embodiment, provides following technical solution: being supported on guiding to the linear motion of percussion hammer 200
On the inner peripheral surface of part 210, it is further possible to make between percussion hammer 200 and transmission shaft 10 for clearance fit.Specifically, should
The inner surface of percussion hammer 200 is to being provided with gap between the outer surface of transmission shaft 10, such as unilateral gap can be for 0.1 millimeter extremely
0.2 millimeter.Certainly, the specific value of the small―gap suture is not limited to the example above, and the application does not make specific limit herein.
In the present embodiment, it is supported on the inner peripheral surface of guide part 210 to the linear motion of percussion hammer 200, guide part 210
It is to be fixed on the shell of handheld tool again, it may also be said to which percussion hammer 200 is supported on shell.
In other embodiments, when percussion hammer is located at outside guide part, i.e., percussion hammer surrounds guide part, percussion hammer can also be straight
It is supported on to line movement the shell of handheld tool, in this embodiment, the guide part inside percussion hammer can be rotation,
Percussion hammer is only for linear motion, does not rotate, and the inner circumferential side in percussion hammer, bridgeware i.e. steel ball can be set in curved surface guide portion
It is arranged on the outer circumference surface of guide part, the rotation of such guide part can drive percussion hammer by curved surface guide portion and bridgeware
Axial movement, and then make percussion hammer impact tool main shaft under the action of accumulating mechanism.
In the present invention, cutter spindle is as part is knocked, and quality is lower, and the energy loss in knockout process is smaller, but
Cutter spindle quality is smaller, and a technical solution for keeping cutter spindle quality small is exactly the diameter for reducing cutter spindle, that is,
The volume of cutter spindle is reduced, the intensity of cutter spindle can be influenced, to a certain extent thus in order to enable cutter spindle
Enough to keep intensity as high as possible in the case where size quality is small, the present invention provides a kind of technical solutions.Referring to Figure 31 institute
Show, in the present embodiment, the effect of cutter spindle 30 is primarily used to carry out rotation connection with transmission shaft 10, therefore rotates connection
Place is also to the maximum place of intensity requirement.In the present embodiment, the connection type between cutter spindle 30 and transmission shaft 10 is used
Hexagonal shape mating, i.e., cutter spindle 30 be outer hexagon cylinder, transmission shaft 10 be interior hexagonal bore, cutter spindle 30
Outer six side and transmission shaft 10 interior hexagonal hole with fetch realization rotation connection.In the present embodiment, the interior hexagonal hole of transmission shaft 10
Path position is positioned close to the side of 30 free end of cutter spindle, accordingly, the position of the outer hexagon cylinder of cutter spindle 30
Setting with interior hexagonal bore correspondingly close to cutter spindle free end side.The advantages of this arrangement are as follows: intensity is wanted
High bindiny mechanism is asked to be positioned close to the middle position or intermediate forward position of cutter spindle 30, to reduce cutter spindle
The probability of Strength Failure.Herein forward refers to close to cutter spindle free end.
It should be noted that hand-held tool includes transmission mechanism, hammering blow machine in hand-held tool of the invention
Structure, cutter spindle, wherein transmission mechanism includes the transmission shaft transferred out by motor and gear reduction back spin, cutter master
Axis is rotated by transmission shaft to be driven, and cutter spindle can rotate driving work head, to realize the rotary operation of hand-held tool, and
And cutter spindle also needs to accept the impact of hammering blow mechanism, and then axial impact can be passed to work head.Hammering blow machine
Structure includes impacting shaft, and impacting shaft can drive one of percussion hammer and guide part to rotate, and the rotation driving of impacting shaft can be by
Transmission shaft is directly or indirectly realized.Herein, impacting shaft can drive one of percussion hammer and guide part to rotate, Ke Yili
Solution under the driving of impacting shaft, percussion hammer can counter-guide carry out relative rotation so that can between percussion hammer and guide part
Relative rotation is generated, and then percussion hammer counter-guide is enable to climb, so as to hit cutter under the driving of accumulating mechanism
Main shaft.In various embodiments, it can be percussion hammer to turn, guide part does not turn, and is also possible to percussion hammer and does not turn, and guide part turns, no
For pipe in which embodiment, impacting shaft is all that element movement of driving rotation, and then realizes opposite turn therebetween
It is dynamic.
In the present invention, cutter spindle, transmission shaft, impacting shaft are that have the function of accordingly, in the present invention, are had above-mentioned
Three axis of corresponding function be it is indispensable, still, in other embodiments, cutter spindle can also act as impacting shaft,
That is, having an axis tool, there are two functions: can either rotate driving work head, can also drive percussion hammer counter-guide
Rotation.In other embodiments, transmission shaft can also act as impacting shaft, that is to say, that transmission shaft both drives cutter spindle
Rotation can also drive the one of both of percussion hammer and guide part to rotate.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (18)
1. a kind of handheld tool, including motor, cutter spindle by the transmission shaft of motor driving rotation, and can give institute
It states cutter spindle and the hammering blow mechanism of axial impact is provided；
The hammering blow mechanism include can relative rotation percussion hammer and guide part, and the accumulating mechanism abutted with the percussion hammer,
It is provided with curved surface guide portion on one of the percussion hammer and the guide part, is set on another of the percussion hammer and guide part
It is equipped with bridgeware, when the percussion hammer is rotated relative to the guide part, the curved surface guide portion drives percussion hammer gram by bridgeware
The active force for taking accumulating mechanism is moved towards first direction；The accumulating mechanism drives the percussion hammer towards opposite with first direction the
The movement of two directions is to impact the cutter spindle；
It is characterized by: the hammering blow mechanism includes impacting shaft, the impacting shaft can drive the percussion hammer and guide part its
One of rotation；
The transmission shaft and the not relatively turnable connection of the impacting shaft.
2. handheld tool according to claim 1, it is characterised in that: the transmission shaft is wholely set with the impacting shaft.
3. handheld tool according to claim 2, it is characterised in that: the transmission shaft is selectively rotated with the percussion hammer
Connection.
4. handheld tool according to claim 3, it is characterised in that: be equipped with first between the transmission shaft and the percussion hammer
Clutch part, first clutch part are movably arranged as in the transmission shaft and the percussion hammer one of both, the transmission shaft with
Another of the percussion hammer is equipped with the first receiving portion；First clutch part and the cooperation of first receiving portion can be realized
The transmission shaft is connect with the rotation of the percussion hammer, first clutch part and first collecting part from when, the transmission
Axis can be relatively rotated with the percussion hammer.
5. handheld tool according to claim 1, it is characterised in that: the cutter spindle is integrally set with the impacting shaft
It sets.
6. handheld tool according to claim 5, it is characterised in that: the cutter spindle is selectively revolved with the percussion hammer
Turn connection.
7. handheld tool according to claim 6, it is characterised in that: be equipped with the between the cutter spindle and the percussion hammer
Two clutch parts, second clutch part are movably arranged as in the cutter spindle and the percussion hammer one of both, the cutter
Another of main shaft and the percussion hammer are equipped with the second receiving portion；The cooperation energy of second clutch part and second receiving portion
Enough realize that the cutter spindle and the rotation of the percussion hammer are connect, second clutch part and second collecting part from when,
The cutter spindle can be relatively rotated with the percussion hammer.
8. handheld tool according to claim 1, it is characterised in that: described in the percussion hammer surrounds at least one plane
Cutter spindle, transmission shaft and impacting shaft.
9. handheld tool according to claim 8, it is characterised in that: the guide part surrounds institute at least one plane
State percussion hammer.
10. handheld tool according to claim 1, it is characterised in that: the percussion hammer is equipped with towards the cutter spindle
Striking face, the striking face can contact in impact process with the cutter spindle, and the striking face is guided than the curved surface
Rotation axis of the portion closer to the cutter spindle.
11. handheld tool according to claim 10, it is characterised in that: the guide sleeve is set to the outer of the percussion hammer
Side, the curved surface guide portion are arranged on the inner peripheral surface of the guide part, and the outer peripheral surface of the percussion hammer is arranged in the bridgeware
On.
12. handheld tool according to claim 10, it is characterised in that: the percussion hammer has towards the cutter spindle
End face, the striking face is than the end face closer to the free end of the cutter spindle.
13. handheld tool according to claim 1, it is characterised in that: the curved surface guide portion includes several climbing sections
And it is corresponding with the climbing section fall section, when the bridgeware passes through the climbing section, described in the bridgeware drives
Percussion hammer overcomes the active force of the accumulating mechanism to move towards first direction；It is described when falling section described in the bridgeware passes through
Accumulating mechanism drives the percussion hammer towards the second direction movement opposite with first direction to impact the cutter spindle；Described turn
The quantity for changing part is consistent with the climbing quantity of section.
14. handheld tool according to claim 1, it is characterised in that: the accumulating mechanism is set as elastic component.
15. a kind of handheld tool, including motor accommodate the shell of the motor, cutter spindle, by motor driving rotation
Transmission shaft, and the hammering blow mechanism of axial impact can be provided to the cutter spindle；
It is characterized by: the hammering blow mechanism include can relative rotation percussion hammer and guide part, with the transmission shaft rotatably
The impacting shaft of connection and the accumulating mechanism abutted with the percussion hammer, one of the percussion hammer and the guide part are upper to be arranged
There is a curved surface guide portion, is provided with bridgeware on another of the percussion hammer and guide part, under conflicting model, the percussion hammer and described
One of guide part is rotated by impacting shaft driving is relatively wherein another, and the curved surface guide portion passes through conversion
Part driving percussion hammer overcomes the active force of accumulating mechanism to move along the central axis of cutter spindle towards first direction；The accumulating mechanism
The percussion hammer is driven to move to impact the knife towards the second direction opposite with first direction along the central axis of cutter spindle
Has main shaft；
Percussion hammer linear motion ground bearing is on the housing.
16. handheld tool according to claim 15, it is characterised in that: the guide sleeve is set to the outer of the percussion hammer
Side, under conflicting model, the relatively described shell fixed setting of the guide part, the percussion hammer is driven relatively described by the impacting shaft
Guide part rotation is supported on the inner peripheral surface of the guide part to the percussion hammer linear motion.
17. handheld tool according to claim 16, it is characterised in that: the curved surface guide portion is set to the guide part
Inner circumferential on, the adapter is set on the outer peripheral surface of the percussion hammer.
18. handheld tool according to claim 15, it is characterised in that: the transmission shaft is integrally set with the impacting shaft
It sets.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810151560 | 2018-02-14 | ||
| CN201810151561 | 2018-02-14 | ||
| CN201810151561X | 2018-02-14 | ||
| CN2018101515728 | 2018-02-14 | ||
| CN201810151572 | 2018-02-14 | ||
| CN2018101515605 | 2018-02-14 |
Publications (1)
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| CN110153959A true CN110153959A (en) | 2019-08-23 |
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| CN202020436850.7U Active CN212497583U (en) | 2018-02-14 | 2019-02-14 | Hand tool |
| CN202020437301.1U Active CN212497584U (en) | 2018-02-14 | 2019-02-14 | Hand tool |
| CN202020438107.5U Active CN212706597U (en) | 2018-02-14 | 2019-02-14 | Hand tool |
| CN202020437442.3U Active CN212497586U (en) | 2018-02-14 | 2019-02-14 | Hand tool |
| CN201910115137.4A Pending CN110153959A (en) | 2018-02-14 | 2019-02-14 | Handheld tool |
| CN201920199684.0U Active CN210307659U (en) | 2018-02-14 | 2019-02-14 | Hand tool |
| CN202020437441.9U Active CN212497585U (en) | 2018-02-14 | 2019-02-14 | Hand tool |
| CN202020436846.0U Active CN212497582U (en) | 2018-02-14 | 2019-02-14 | Hand tool |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020436850.7U Active CN212497583U (en) | 2018-02-14 | 2019-02-14 | Hand tool |
| CN202020437301.1U Active CN212497584U (en) | 2018-02-14 | 2019-02-14 | Hand tool |
| CN202020438107.5U Active CN212706597U (en) | 2018-02-14 | 2019-02-14 | Hand tool |
| CN202020437442.3U Active CN212497586U (en) | 2018-02-14 | 2019-02-14 | Hand tool |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920199684.0U Active CN210307659U (en) | 2018-02-14 | 2019-02-14 | Hand tool |
| CN202020437441.9U Active CN212497585U (en) | 2018-02-14 | 2019-02-14 | Hand tool |
| CN202020436846.0U Active CN212497582U (en) | 2018-02-14 | 2019-02-14 | Hand tool |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112720367A (en) * | 2019-10-29 | 2021-04-30 | 苏州宝时得电动工具有限公司 | Hand tool |
| CN112720366A (en) * | 2019-10-29 | 2021-04-30 | 苏州宝时得电动工具有限公司 | Hand tool |
| CN113966262A (en) * | 2019-09-06 | 2022-01-21 | 喜利得股份公司 | Hand-held power tool |
| CN112720367B (en) * | 2019-10-29 | 2024-04-30 | 苏州宝时得电动工具有限公司 | Hand-held tool |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212497583U (en) * | 2018-02-14 | 2021-02-09 | 苏州宝时得电动工具有限公司 | Hand tool |
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- 2019-02-14 CN CN202020437442.3U patent/CN212497586U/en active Active
- 2019-02-14 CN CN201910115137.4A patent/CN110153959A/en active Pending
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| CN113966262A (en) * | 2019-09-06 | 2022-01-21 | 喜利得股份公司 | Hand-held power tool |
| CN112720367A (en) * | 2019-10-29 | 2021-04-30 | 苏州宝时得电动工具有限公司 | Hand tool |
| CN112720366A (en) * | 2019-10-29 | 2021-04-30 | 苏州宝时得电动工具有限公司 | Hand tool |
| CN112720367B (en) * | 2019-10-29 | 2024-04-30 | 苏州宝时得电动工具有限公司 | Hand-held tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN210307659U (en) | 2020-04-14 |
| CN212497582U (en) | 2021-02-09 |
| CN212497584U (en) | 2021-02-09 |
| CN212497583U (en) | 2021-02-09 |
| CN212497585U (en) | 2021-02-09 |
| CN212706597U (en) | 2021-03-16 |
| CN212497586U (en) | 2021-02-09 |
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