CN106166722A - There is the hand held power machine of mechanical type rotating beater mechanism - Google Patents
There is the hand held power machine of mechanical type rotating beater mechanism Download PDFInfo
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- CN106166722A CN106166722A CN201610341079.3A CN201610341079A CN106166722A CN 106166722 A CN106166722 A CN 106166722A CN 201610341079 A CN201610341079 A CN 201610341079A CN 106166722 A CN106166722 A CN 106166722A
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- spring
- spring element
- hand held
- power machine
- held power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
- B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
- B25B21/026—Impact clutches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
- B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
- B25B21/023—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket for imparting an axial impact, e.g. for self-tapping screws
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Springs (AREA)
Abstract
The present invention relates to one and there is the hand held power machine of mechanical type rotating beater mechanism (122), described beater mechanism is for driving plug-in type instrument in impact mode, wherein, described rotary impact mechanism (122) has the impact body (225) loaded by springing, described impact body couples and is movably supported in the axial direction in described drive shaft (120) in order to drive in a rotative pattern with the drive shaft (120) attached troops to a unit, described impact body (225) is loaded by least one spring element (228) springing, at least one spring element described has the spring constant (Fc1 that at least two is different, Fc2).
Description
Technical field
The present invention relates to a kind of hand held power machine with mechanical type rotating beater mechanism, described impact
Mechanism is for driving plug-in type instrument in impact mode, and wherein, rotary impact mechanism has and added by springing
Carry impact body, described impact body couple with the drive shaft attached troops to a unit to drive in a rotative pattern and
It is movably supported in the axial direction in described drive shaft.
Background technology
By this hand held power machine known in the art, described hand held power machine has rotary impact
Mechanism, this rotary impact mechanism is with the impact body loaded by springing.Impact body at this by be configured to pressure
Power spring and there is the spring element bullet of predetermined spring constant and constant spring diameter and turn separation
Dynamic loading.Therefore, in the case of the least spring constant, impact body stands little pre-
Tightly, but described little pretension can produce the high power of backwashing of impact body, thus can produce dry
Disturb vibration.On the contrary, in the case of the biggest spring constant, impact body stands big pre-
Tightly, vertical impact and/or impact can be delivered on the edge of impact body by described big pretension or
In the drive shaft that person couples with impact body, thus, the corresponding abrasion of rotary impact mechanism can be increased.
Summary of the invention
The present invention provides a kind of new hand held power machine, and it has for driving grafting in impact mode
The mechanical type rotating beater mechanism of formula instrument, wherein, rotary impact mechanism has by rushing that springing loads
Hitting body, described impact body couples with the drive shaft attached troops to a unit and axially to drive in a rotative pattern
It is movably supported on direction in described drive shaft.Described impact body is by least one spring element bullet
Dynamic loading, at least one spring element described has the spring constant that at least two is different.
Therefore, the invention allows to provide a kind of hand held power machine, described hand held power machine can
At least reduce punching being had at least one spring element of at least two difference spring constant by application
Hitting excessively moving axially and/or excessive reset force of body, impact body is loaded into by described reset force respectively
In the initial position attached troops to a unit, such that it is able at least react on rotary impact mechanism lasting infringement or
Person damages.
At least one spring element described is preferably according to the type structure of volute spring.Therefore, it can carry
For having the stable and firm spring element of two different spring constants.
Preferably, at least one spring element described is according to the spring with at least two list spring element
The type structure of system, wherein, described single spring element has different spring constants.Accordingly, it is capable to
At least one spring element described is realized by means of spring system the most in a straightforward manner with method.
According to a form of implementation, described at least two list spring element is set to be connected in parallel to each other or that
This series connection.Therefore, it can be arranged to spring system by reliable and uncomplicated for list spring element.
Described at least two list spring element is preferably arranged on one another in the case of parallel connection.Therefore,
Can realize said two list spring element compression and firm layout.
Preferably, when described at least two list spring element parallel connection, in the initial position of impact body,
First single spring element abuts on impact body and second single spring element is preferably arranged to predetermined
Spacing is spaced apart with described impact body.It is thereby achieved that the two stage loading of impact body, in institute
State in two stage loading after first single spring element is compressed by predetermined spacing, first single spring
The spring constant of element improves with the spring constant of second single spring element at least in part.
Described at least two list spring element is preferably connected by intermediary element in the case of series connection each other
Connect.It is thereby achieved that two single spring elements each other firm and connecting reliably.
According to a form of implementation, described intermediary element is provided with the regulation for regulating initial spring constant
Mechanism.Therefore, it can provide simply and reliably for different application, such as having not
Rotary impact mechanism with the different rapidoprints of hardness.
Preferably, the described governor motion for regulating initial spring constant has the lock loaded by springing
Only element.It is, therefore, possible to provide a kind of adjustable initial spring constant, described adjustable initially
Spring constant preferably has the biggest value.
Preferably, at least one spring element described and/or described at least two list spring element have respectively
There is constant or variable spring diameter and/or there is constant or variable turn separation.Therefore,
Can provide simply and uncomplicatedly the desired of this spring element or these single spring elements or
Spring constant needed for person.
Additionally, the present invention provides a kind of mechanical type rotating beater mechanism for hand held power machine, its
For driving plug-in type instrument in impact mode, wherein, described rotary impact mechanism has and is added by springing
Carry impact body, described impact body in order to drive in a rotative pattern and can be with described hand held power machine
The drive shaft attached troops to a unit coupling and described drive shaft can be movably supported in the axial direction
On.Described impact body is loaded by least one spring element springing, and at least one spring element described has
There is the spring constant that at least two is different.
Accompanying drawing explanation
In the following description by means of the present invention explained in detail of the embodiment shown in accompanying drawing.It shows
Go out:
Fig. 1: according to the hand held power machine with mechanical type rotating beater mechanism of a form of implementation
Schematic diagram；
The sectional view of the near middle section of the mechanical type rotating beater mechanism of the hand held power machine of Fig. 2: Fig. 1；
The remote middle section of the mechanical type rotating beater mechanism of the hand held power machine of Fig. 3: Fig. 1 and Fig. 2
Sectional view；
The signal of the spring element according to the present invention of the mechanical type rotating beater mechanism of Fig. 4: Fig. 1-Fig. 3
Property spring force-spring travel-measurement figure；
Fig. 5 a: there is spring element according to the first form of implementation, the mechanical type rotating of Fig. 1-Fig. 3
Beater mechanism sectional view in the first enforcement modification, the spring force of described spring element approximation and Fig. 4-
Spring travel-measurement figure is consistent；
Fig. 5 b: there is spring element according to the first form of implementation, the mechanical type rotating of Fig. 1-Fig. 3
Beater mechanism implements the sectional view in modification second；
Fig. 6 a: there is spring system according to the first form of implementation, the mechanical type rotating of Fig. 1-Fig. 3
The sectional view of beater mechanism；
Fig. 6 b: there is spring system according to the second form of implementation, the mechanical type rotating of Fig. 1-Fig. 3
The sectional view of beater mechanism；
Fig. 7 a: there is spring system according to the 3rd form of implementation, the mechanical type rotating of Fig. 1-Fig. 3
The sectional view of beater mechanism；
Fig. 7 b: there is spring system according to the 4th form of implementation, the mechanical type rotating of Fig. 1-Fig. 3
The sectional view of beater mechanism；
Exemplary spring force-the spring travel of the spring system of Fig. 7 c: Fig. 6 and Fig. 7-measurement figure；
Fig. 8 a: there is spring system and for regulating the governor motion of initial spring constant, Fig. 1-figure
The sectional view of the mechanical type rotating beater mechanism of 3；
Exemplary spring force-the spring travel of the spring system of Fig. 8 b: Fig. 8 a-measurement figure；
The three-dimensional side view of the spring element that Fig. 9 a: the first is exemplary；
The three-dimensional side view of the spring element that Fig. 9 b: the second is exemplary；
The three-dimensional side view of Fig. 9 the c: the three exemplary spring element；With
The three-dimensional side view of Fig. 9 the d: the four exemplary spring element.
Detailed description of the invention
Fig. 1 illustrates the hand held power machine 100 being provided with instrument acceptance division 150, described hand held power machine
There is the housing 110 with handle 126.According to a form of implementation, hand held power machine 100 can
It is mechanically connected with accumulator battery 130 and electrically connects to power with being independent of electrical network.
One electric drive motor 114, the transmission dress powered by accumulator battery 130 is set within the case 110
Put 118 and a mechanical percussion mechanism 122.Drive motor 114 such as can be grasped by hand switch 128
Vertical, namely turn on and off, and to drive motor can be arbitrary motor type, such as electronics
Communtation motor or d.c. motor.Preferably, drive motor 114 can be electronically controllable and regulate,
Run so that reversing can not only be realized, and be capable of in terms of desired rotary speed pre-
Fixed.The operation principle and the structure that suitably drive motor are the openest by prior art, thus this
In succinctly save detailed description for description.
Motor 114 is driven to be connected with actuating device 118 by the motor drive shaft 116 attached troops to a unit, described transmission
The rotation of motor drive shaft 116 is converted to be arranged between actuating device 118 and beater mechanism 122 by device
The rotation of drive shaft 120.This conversion is carried out the most as follows, i.e. drive shaft 120 relative to
The rotating speed that motor drive shaft 116 still reduces with the torque increased rotates.Exemplarily, motor 114 is driven
It is arranged in motor shell 115 and actuating device 118 is arranged in gear mechanism housing 119, its
In, gear mechanism housing 119 and motor shell 115 are exemplarily arranged within the case 110.
The mechanical percussion mechanism 122 being connected with drive shaft 120 be exemplarily rotary impact mechanism or
Person turns round beater mechanism, described rotary impact mechanism or revolution beater mechanism and produces and have high intensity
The rotation impulse of impulse form and this rotation impulse is delivered to output shaft 124, such as exports main shaft
On.Arranging instrument acceptance division 150 on output shaft 124, described instrument acceptance division is preferably configured for connecing
Receive plug-in type instrument and according to a form of implementation can not only with outer polygon connection part 142
Plug-in type instrument 140 connects, and can be connected with the plug-in type instrument with interior polygon connection part.
Plug-in type instrument 140 is exemplarily configured with outer polygon connection part 142, exemplarily eight limits and couples
The screwdriver head in portion.This screwdriver head is fully disclosed by prior art, thus herein for explanation
The clean purpose of letters saves detailed description.
Rise it is noted that hand held power machine 100 is exemplarily configured to accumulator rotary impact type
Handset.But the invention is not restricted to accumulator rotary impact type driver, but can apply in difference
Electric tool, in such as impact drill etc., can apply for producing in described electric tool
The mechanical percussion mechanism 122 of raw impact, passes through regardless of electric tool with whether can being independent of electrical network
Accumulator battery is run or is relied on electrical network ground and runs.
Fig. 2 show the actuating device 118 being arranged in gear mechanism housing 119 of Fig. 1 remote in
Section, and the Jin Zhong district of the mechanical type rotating beater mechanism 122 according to Fig. 1 of a form of implementation
Section.Rotary impact mechanism is exemplarily arranged in housing parts 222, and described housing parts is fixed on
On gear mechanism housing 119.
Actuating device 118 is exemplarily planetary driving device, and exemplarily have sun gear 209,
At least one planetary gear 215,217, planet carrier or take moving part 218 and axially and radially going up
The hollow wheel 206 being arranged in gear mechanism housing 119 with not moving.Sun gear 209 exemplarily by
Supporting arrangement 219 can be rotated to support in drive shaft 120.Take moving part 218 exemplarily with driving
Axle 120 single type ground structure, such as molding is on the driving shaft.Being alternative in this place, taking moving part 218 can
To be connected with drive shaft 120 by suitable attachment means.
According to a form of implementation, planetary driving device 118 can be changed between multiple levels and show
Can change between first and second grades to example, wherein, the first order is by described sun gear 209, institute
State at least one planetary gear 215,217, described planet carrier or take moving part 218 and described hollow wheel 206
Constitute.Succinct and clear for accompanying drawing, the second level 211 is only shown schematically.However it is necessary that
It is noted that for professional and technical personnel in the field, suitable planetary driving device corresponding
Structure has had been fully disclosed, thus can save detailed description here.
The bearing being configured to ball bearing is exemplarily set in the remote middle section of gear mechanism housing 119
234, it is used for supporting drive shaft 120.It should be noted however that also can in the framework of the present invention
Enough apply other bearing types.Such as bearing 234 can also be implemented as sliding bearing, needle roller alternatively
Set, roller bearing or other Rolling Bearing Types.
According to a form of implementation, the end face 299 at gear mechanism housing 119 arranges one and is allocated to institute
Stating the pad 240 of mechanical type rotating beater mechanism 122, described pad has opening 242 and by being somebody's turn to do
Opening rotatably and is axially displaceably bearing in drive shaft 120.Additionally, an impact body 225
The most axially movably it is bearing in drive shaft 120.Between impact body 225 and pad 240 excellent
Selection of land arranges a damping element 244 being exemplarily bearing in drive shaft 120, and at least one bag
Spring element 228 that enclose drive shaft 120, that be exemplarily configured to compression spring, it is at Fig. 1
Hand held power machine 100 impact run in produce impact.
At least one compression spring 228 described deviates from, at it, the pad that reclines on the end 227 of impact body 225
Sheet 240, wherein, pad 240 can such as pass through injection molding technological forming to compression spring
On 228.It is alternative in this place, compression spring 228 and pad 240 to construct with single type.Pressure bullet
The end 226 in the face of impact body 225 of spring 228 is arranged in impact body 225, as following at Fig. 3
As described in.
According to a form of implementation, compression spring 228 is supported on pad 240 and direction in distance
Upper, that is direction towards the instrument acceptance division 150 of Fig. 1 load impact body 225, as with arrow
As 229 represent.Fig. 1 hand held power machine 100 properly functioning in, say, that as
Fruit need not produce impact, then impact body 225 in remote shown in Fig. 2 in terminal location with drive shaft
120 rotate together.
In the impact of the hand held power machine 100 of Fig. 1 runs, at mechanical type rotating beater mechanism 122
When producing impact, the power of impact body 225 renitency spring 228 axially towards direction near, the most just
It is to say that the direction towards pad 240 is moved.In order to avoid impact body 225 exceedingly to move axially at this,
This impact body is damped element 244 locking in the axial direction in predetermined near middle terminal location, wherein,
Impact body 225 is fallen towards the impact of damping element 244 by the damping of this damping element.Then, in order to produce
Impact, impact body 225 again by compression spring 228 impact type to resilience move shown in Fig. 2 remote
In middle terminal location.Because the operation principle of mechanical percussion mechanism and being produced by this beater mechanism
Impact has had been fully disclosed for professional and technical personnel in the field, so herein for description
Succinct purpose and save detailed description.
Fig. 3 illustrates the mechanical type rotating beater mechanism 122 of Fig. 1 and Fig. 2 according to a form of implementation
Remote in section, it has the impact body 225 being bearing in drive shaft 120, and described impact body is by pressure
Spring 228 loads towards the direction of output shaft 124.This output shaft is by being provided with the flange of output cam
324 with drive shaft 120 rotatable movement couple.
According to a form of implementation, impact body 225 is configured to a pot shape, and it has the base area section 398 of annular,
The end face 330 in the face of output shaft 124 of this base area section is at hand held power machine 100 normal of Fig. 1
Recline in operation flange 324.In the base area section 398 be configured with central opening 399 in molding inside one
The wall section 334 of the outside annular of the wall section 332 and of annular, the annular wall district of described inside
The wall section of section and outside annular forms one in figure 3 in the face of compression spring together with base area section 398
The annular groove 336 of 228.
The end 226 in the face of impact body 225 of described compression spring 228 is arranged on described annular groove 336
In, described end exemplarily reclines ring plate 360, and described ring plate can be fixed on compression spring 228
Or may be molded on compression spring.Compression spring 228 is towards the direction loaded ring of base area section 398
Sheet 360, and therefore direction towards flange 324 preferably abuts against the pressure being arranged in annular groove 336
Ball bearing 350.This pressure ball bearing preferably has generally U-shaped load-carrying ring 352, in described carrying
Ring arranges multiple ball 354,356.Ring plate 360 reclines load-carrying ring 352 and the most described ball 354,
356 against base area section 398.It should be noted however that ring plate 360 is used only for realizing at pressure ball
On bearing 350 more preferable pressure support distribution and therefore mechanical type rotating beater mechanism there is no ring plate
The configuration of 360 is also possible, compression spring 228 in the face of the end of impact body 225 in this configuration
226 directly against depended on pressure ball bearing 350.
According to a form of implementation, pressure ball bearing 350 is configured to the hand held power machine at Fig. 1
The impact of 100 makes the impact body 225 can when mechanical type rotating beater mechanism 122 produces impact in running
Rotate relative to compression spring 228.Here, impact body 225 preferably with the U of pressure ball bearing 350
Shape load-carrying ring 352 rotates relative to drive shaft 120 together, wherein, and the ball 354,356 of pressure ball bearing
Ring plate 360 rolls.
Fig. 4 illustrates at least one compression spring 228 described in the rotary impact mechanism 122 of Fig. 1 to Fig. 3
Spring force-spring travel-measurement figure, wherein, exemplarily, the vertical coordinate measuring figure is described bullet
Spring force F and on the horizontal scale description spring travel s.Preferably, compression spring 228 has at least two
Individual spring constant Fc1, Fc2 different, that there is spring travel s1 or s2 attached troops to a unit, described bullet
Spring stroke is represented by first area I and second area II in the diagram.Spring constant Fc1, Fc2 can
To be preferably adapted to rotary impact mechanism 122 or to adapt to the application set, and the most at least
Be essentially prevented from impact the runs impact body 225 of Fig. 2 and Fig. 3 excessive move axially and/or
The excessive reset force of impact body 225 or the shock of impact body 225.
Exemplarily, the first spring constant Fc1 is less than the second spring constant Fc2, thus in little impact
In the application of power or fast impact velocity, the most only the first spring constant Fc1 is used.Thus,
Impact body 225 can be stoped exceedingly to move axially.In the application needing high impact forces, the two
Spring constant Fc1, Fc2 are used, and the most preferably, spring constant Fc1 at least reduces and excellent
Choosing stops excessively moving axially of impact body 225, and/or preferably, spring constant Fc2 at least reduces
And preferably stop excessive reset force or the shock of impact body 225 of impact body 225.Need to refer to
Going out, two spring constant Fc1 in Fig. 4, the layout of Fc2 only has exemplary characteristic also
And it is not intended as limitation of the present invention.Therefore the first spring constant Fc1 can also be normal more than the second spring
Number Fc2.
The first spring constant Fc1 shown in the I of first area exemplarily has what approximately linear rose
Or straight characteristic curve 401 and the second spring constant Fc2 shown in second area II are exemplary
Ground has that approximation index rises or cumulative characteristic curve 402.It is pointed out that spring constant
The configuration of Fc1, Fc2 or their characteristic line only have exemplary characteristic and are not intended as this
The restriction of invention.Therefore, the characteristic curve 401,402 of compression spring 228 can have straight, cumulative
And/or the trend of regressive.Additionally, the two characteristic curve 401,402 can also have identical trend,
It is to say, the two characteristic curve 401,402 can such as have with different slopes or spring
The straight trend of constant.
Fig. 5 a illustrates the flange 324 that is bearing in drive shaft 120 with impact body 520 and Fig. 3
Rotary impact mechanism 122.According to a form of implementation, impact body 225 class of impact body 520 and Fig. 2
As construct, but there is the inner wall section 332 comparatively speaking shortened.Additionally, compression spring 228
Type structure according to volute spring 510 has wide first end 512 and narrow the second end 514, institute
State volute spring and preferably there is the spring constant of the spring force-spring travel-measurement chart corresponding to Fig. 4
Fc1, Fc2.Exemplarily, the first end 512 of spring 510 is the end in the face of impact body 520
226, described end is arranged in fig 5 a in impact body 225 and preferably with Fig. 3 and reclines similarly
In ring plate 360.Additionally, the second end 514 of spring 510 abuts in the support of drive shaft 120
On face 522.
Fig. 5 b illustrates the rotary impact mechanism 122 of the volute spring 510 with impact body 520 and Fig. 5 a,
Wherein, according to another form of implementation, the narrow the second end 514 of spring 510 is in the face of impact body
The end 226 of 520.Here, the second end 514 of spring 510 is arranged in impact body 225 and
Preferably abut in similarly in ring plate 360 with Fig. 3 and Fig. 5 a.Additionally, the first end of spring 510
512 abut on the supporting surface 522 of drive shaft 120.
Fig. 6 a illustrates the flange being bearing in drive shaft 120 of the impact body 225 and Fig. 3 with Fig. 2
The rotary impact mechanism 122 of the compression spring 228 according to the second form of implementation structure of 324 and Fig. 2.
Here, compression spring 228 is according to having at least two, exemplarily first and second single spring elements
The type structure of the spring system 605 of 610,620, wherein, the two list spring element 610,620
Having different spring constant Fc1, Fc2, described different spring constant preferably corresponds to the bullet of Fig. 4
Spring force-spring travel-measurement chart.
According to a form of implementation, said two list spring element 610,620 is connected in parallel to each other setting, its
In, the two list spring element 610,620 is arranged on one another.Here, in Fig. 6 a, second
Single spring element 620 is arranged in first single spring element 610, wherein, and first single spring element 610
It is arranged between the ring plate 360 of impact body 225 and the supporting surface 522 of drive shaft 120.Additionally, the
That two single spring elements 620 are arranged on supporting surface 522 and impact body 225 or inner wall section 332
Between the end 602 of drive shaft 120.
Preferably, in the initial position of impact body 225, first single spring element 610 abuts in punching
Hit in body 225 or ring plate 360, and second single spring element 620 with predetermined spacing 630 with
The end 602 of impact body 225 or impact body 225 is arranged at interval.Preferably, second single bullet
Spring element 620 has the spring constant Fc2 bigger than first single spring element 610 at this.Therefore, in punching
Hitting in operation, first single spring element 610 is first by application of load and compressed, and have compressed
After predetermined spacing 630, two single spring elements 610,620 are all by application of load, thus, as
As described in Fig. 4, can at least reduce and preferably stop excessive axially the moving of impact body 225
Dynamic and/or the excessive reset force of impact body 225 or the shock of impact body 225.
Fig. 6 b illustrates the rotary impact mechanism 122 of the spring system 605 with Fig. 6 a, wherein, first
Single spring element 610 is arranged in second single spring element 620.Here, second single spring element 620
Be arranged on supporting surface 522 and impact body 225 or outer wall section 334 in the face of drive shaft 120
Abut on support component 640 between end 602 and in its opposed end.Support component 640
Preferably according to the type structure of ring plate and be arranged on the supporting surface 522 of drive shaft 120.Preferably,
First and/or second single spring element 610,620 can with support component 640 single type be connected.But
Be support component 640 can also with drive shaft 120 single type be connected.Additionally, support component 640
The single spring element 610 of drive shaft 120, first and/or second can also be molded into, on 620.With Fig. 6 a
Similarly, preferably to have the spring bigger than first single spring element 610 normal for second single spring element 620
Number Fc2.
Fig. 7 a illustrate Fig. 2's and Fig. 3 or Fig. 6 a's and Fig. 6 b, the rotation with spring system 705
Turning beater mechanism 122, described spring system is provided with at least two, exemplarily first and second single bullets
Spring element 720,730.Here, said two list spring element 720,730 preferably has different bullets
Spring constant Fc1, Fc2, described different spring constant preferably corresponds to the spring force-spring travel of Fig. 4
-measure chart.Here, two single spring elements 720,730 are arranged the most in series with each other, its
In, said two list spring element successive ground is arranged, the most exemplarily self ground
Arrange.
According to a form of implementation, said two list spring element 720,730 is by intermediary element 710
Coupled to each other.Here, first single spring element 720 be arranged on impact body 225 ring plate 360 and in
Between element 710 between the side 711 of impact body 225 and second single spring element 730 is arranged
In the side 712 in the face of drive shaft 120 of the supporting surface 522 of drive shaft 120 and intermediary element 710 it
Between.Intermediary element 710 is preferably according to the type structure of ring plate.Preferably, first and/or second single bullet
Spring element 720,730 may be molded in intermediary element 710 or with this intermediary element single type even
Connect.Additionally, first single spring element 720 preferably has the spring bigger than second single spring element 730
Constant Fc1.
Fig. 7 b illustrates the rotary impact mechanism 122 of the spring system 705 with Fig. 7 a, wherein, second
Single spring element 730 is arranged on faced by ring plate 360 and the intermediary element 710 of impact body 225 now
Between the side 711 of impact body 225, and first single spring element 720 is arranged on drive shaft 120 now
Supporting surface 522 and intermediary element 710 in the face of drive shaft 120 side 712 between.Here, the
One single spring element 720 the most preferably has the spring bigger than second single spring element 730 with Fig. 7 a
Constant Fc1.
Fig. 7 c illustrates the spring force-spring travel-measurement chart of the spring system 705 of Fig. 7 a and Fig. 7 b,
Wherein, in figure on the vertical scale the spring force F (unit is newton) of depicted example at this measurement chart
Abscissa on the spring travel s (unit is millimeter) of depicted example.Preferably, spring system 705
There are two spring constant Fc1, Fc2 different, that have spring travel s1 or s2 attached troops to a unit,
Described spring travel represents similarly by first area I and second area II with Fig. 4 in figure 7 c.
With single spring element 720,730 arrange or they spring constant Fc1, Fc2 independently, excellent
It is selected in impact operation, first there is single spring element of less spring constant by application of load or quilt
Compression, and another single spring element or two single spring elements be jointly or simultaneously afterwards
Ground is by application of load.
Exemplarily, the first spring constant Fc1 shown in the I of first area has approximately linear rising
Or straight characteristic curve 701 and the second spring constant Fc2 example shown in second area II
Property ground there is that approximation index rises or cumulative characteristic curve 702.It is pointed out that spring constant
The value illustrated of spring travel s1 or s2 that be Fc1, Fc2 or that attach troops to a unit only has exemplary
Characteristic and be not intended as limitation of the present invention.
Fig. 8 a illustrates the rotary impact mechanism of the spring system 705 and intermediary element 710 with Fig. 7 a
122, wherein, intermediary element 710 is provided with for regulating initial spring constant according to an embodiment
Governor motion 810.Here, there is at least one for regulating the governor motion 810 of initial spring constant
The locking element 820 loaded by springing.
In the impact of rotary impact mechanism 122 runs, the form of implementation shown in Fig. 8 a needs height
Initial spring constant, described high initial spring constant is by by governor motion 810 this example of pretension
Property first single spring element 720 realize.Here, the single spring element of locking element 820 locking second
Part 730, and when exceeding predetermined spring force, locking element 820 unlocks second single spring element
730 or the single spring element of release second, thus, the spring constant Fc2 in the II of region is the least
Spring constant Fc1 in the I of region, or there is less slope.
Fig. 8 b illustrates the spring force-rows of springs of the spring system 705 of Fig. 8 a with governor motion 810
Journey-measurement chart, wherein, in figure, on the vertical coordinate measuring chart, the spring force F of depicted example is (single
Position is for newton) and the spring travel s (unit is millimeter) of depicted example on the horizontal scale.According to
The present invention, spring system 705 have two different, there is spring travel s1 or s2 attached troops to a unit
Spring constant Fc1, Fc2, described spring travel in figure 8b with Fig. 4 and Fig. 7 c similarly by
First area I and second area II represents.Exemplarily, the first spring shown in the I of first area
Constant Fc1 has approximately linear rises or straight characteristic curve 801, and described characteristic curve is due at the beginning of high
Beginning spring constant has the biggest slope, and the second bullet shown in second area II
Spring constant Fc2 has same approximately linear rises or straight characteristic curve 802, described characteristic curve due to
Locking element 820 has the least slope.It is pointed out that spring constant Fc1, Fc2
Or the value illustrated of spring travel s1 or s2 attached troops to a unit only there is exemplary characteristic and not
It is considered as limitation of the present invention.It is furthermore pointed out that the configuration of spring constant Fc1, Fc2 or
Their characteristic curve the most only has exemplary characteristic and is not intended as limitation of the present invention.Cause
This, characteristic curve 801, the 802 (characteristic curve 401,402 and Fig. 7 c with Fig. 4 of compression spring 228
Characteristic curve 701,702 similarly) can have straight, the cumulative and/or trend of regressive.
Figure 9 below a to 9d illustrates for realizing compression spring 228 and/or the list of spring system 705
Spring element 610,620, exemplary spring element (910 in Fig. 9 a, the figure of 710,720
In 9b 920,930 in Fig. 9 c, 940 in Fig. 9 d), described spring element is respectively provided with not
That become or the variable spring diameter (D in Fig. 9 a；D1, D2 in Fig. 9 b and Fig. 9 d) and/
Or the constant or variable turn separation (h in Fig. 9 a；H1, h2 in Fig. 9 b and Fig. 9 c).
Fig. 9 a illustrates the spring element 910 according to the first form of implementation.Spring element 910 preferably has
There is constant spring diameter D and constant turn separation h.
Fig. 9 b illustrates a spring element 920, and it has variable spring diameter according to the second form of implementation
(that is at least one first and second spring diameter D1, D2) and variable turn separation are (the most just
It is to say at least one first and second turn separation h1, h2).Preferably, spring element 920 has three
Individual region I, II, III, wherein, region I and region III constructs the most in the same manner and region II is preferred
It is arranged between region I and region III.Exemplarily, region I and region III is provided with spring diameter
D1 and turn separation h1, and region II has spring diameter D2 and turn separation h2, and wherein, spring is straight
Footpath D1 is exemplarily exemplarily less than turn separation h2 less than spring diameter D2 and turn separation h1.
It is pointed out that the configuration illustrated in figure 9b of spring element 920 only has exemplary spy
Property and be not intended as limitation of the present invention.Therefore, spring element 920 and following spring element
(930 in Fig. 9 c, 940 in Fig. 9 d) can also have the region of two or more than three.
Additionally, spring diameter D1 can be more than turn separation more than spring diameter D2 and/or turn separation h1
h2。
Fig. 9 c illustrates a spring element 930, and it has constant spring diameter according to the 3rd form of implementation
D and variable turn separation (that is at least one first and second turn separation h1, h2).With figure
Similarly, spring element 930 has three regions I, II, III, wherein, region I and region III to 9b
Structure and region II are preferably provided between region I and region III the most in the same manner.Exemplarily,
Region I and region III is provided with turn separation h1, and region II has turn separation h2, wherein, circle
Spacing h1 is preferably smaller than turn separation h2.But turn separation h1 can also be more than turn separation h2.
Fig. 9 d illustrates a spring element 940, and it has constant turn separation h according to the 4th form of implementation
With variable spring diameter (that is at least one first and second spring diameter D1, D2).With
Similarly, spring element 940 has three regions I, II, III, wherein, region to Fig. 9 b and Fig. 9 c
I and region III constructs the most in the same manner and region II is preferably provided between region I and region III.
Exemplarily, region I and region III is provided with spring diameter D1, and region II to have spring straight
Footpath D2, wherein, spring diameter D1 is preferably smaller than spring diameter D2.But, spring diameter D1 is also
Spring diameter D2 can be more than.
Typically, these exemplary spring elements (910 in Fig. 9 a, 920 in Fig. 9 b, figure
In 9c in 930 and Fig. 9 d 940) there is circular spring wire profile.It should be noted however that
The spring wire profile of this circle only has exemplary characteristic and is not intended as limitation of the present invention.
Therefore, corresponding spring element can also have oval or angular, the spring of such as rectangle
Silk profile.
Claims (11)
1. a hand held power machine (100) with mechanical type rotating beater mechanism (122), institute
State beater mechanism for driving plug-in type instrument (140), wherein, described rotary impact in impact mode
Mechanism (122) has the impact body (225) loaded by springing, and described impact body is in order to rotation side
Formula drives and couples with the drive shaft (120) attached troops to a unit and be movably supported on institute in the axial direction
State in drive shaft (120), it is characterised in that described impact body (225) is by least one spring element
Part (228；510) springing loads, and at least one spring element described has the bullet that at least two is different
Spring constant (Fc1, Fc2).
Hand held power machine the most according to claim 1, it is characterised in that described at least one
Spring element (228) is according to the type structure of volute spring (510).
Hand held power machine the most according to claim 1 and 2, it is characterised in that described at least
One spring element (228) is according to having at least two list spring element (610,620；720,730)
Spring system (605；705) type structure, wherein, described single spring element (610,620)
There is different spring constants (Fc1, Fc2).
Hand held power machine the most according to claim 3, it is characterised in that described at least two
Single spring element (610,620；720,730) it is set to be connected in parallel to each other or be one another in series.
Hand held power machine the most according to claim 4, it is characterised in that described at least two
Single spring element (610,620) is arranged on one another in the case of parallel connection.
6. according to the hand held power machine described in claim 4 or 5, it is characterised in that described extremely
Initial at described impact body (225) in the case of few two single spring elements (610,620) parallel connection
In position, first single spring element (610) abuts on described impact body (225) and the second list
Spring element (620) is set to predetermined spacing (630) spaced apart with described impact body (225).
Hand held power machine the most according to claim 4, it is characterised in that described at least two
Single spring element (720,730) is connected to each other by intermediary element (710) in the case of series connection.
Hand held power machine the most according to claim 7, it is characterised in that described intermediary element
(710) governor motion (810) for regulating initial spring constant it is provided with.
Hand held power machine the most according to claim 8, it is characterised in that described for regulating
The governor motion (810) of initial spring constant has the locking element (820) loaded by springing.
10. according to the hand held power machine according to any one of the claims, it is characterised in that institute
State at least one spring element (228；910,920,930,940) and/or described at least two list bullet
Spring element (610,620；720,730) be respectively provided with constant or variable spring diameter (D1,
And/or there is constant or variable turn separation (h1, h2) D2).
11. 1 kinds of mechanical type rotating beater mechanisms (122) for hand held power machine (100), its
For driving plug-in type instrument (140), wherein, described rotary impact mechanism (122) in impact mode
There is the impact body (225) loaded by springing, described impact body in order to drive in a rotative pattern and can
Couple with the drive shaft (120) attached troops to a unit of described hand held power machine (100) and can be axially
It is movably supported on direction in described drive shaft (120), it is characterised in that described impact body (225)
By at least one spring element (228；510) springing loads, and at least one spring element described has
The spring constant (Fc1, Fc2) that at least two is different.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015209406.5A DE102015209406A1 (en) | 2015-05-22 | 2015-05-22 | Hand tool with a mechanical rotary impact mechanism |
| DE102015209406.5 | 2015-05-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106166722A true CN106166722A (en) | 2016-11-30 |
Family
ID=57231646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610341079.3A Pending CN106166722A (en) | 2015-05-22 | 2016-05-20 | There is the hand held power machine of mechanical type rotating beater mechanism |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106166722A (en) |
| DE (1) | DE102015209406A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112703087A (en) * | 2018-07-27 | 2021-04-23 | 费斯托工具有限责任公司 | Hand-held power tool, in particular impact screwdriver |
| CN112975860A (en) * | 2019-12-02 | 2021-06-18 | 株式会社牧田 | Impact tool |
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| JP2013000873A (en) * | 2011-06-22 | 2013-01-07 | Panasonic Eco Solutions Power Tools Co Ltd | Impact tool |
| CN103307192A (en) * | 2013-06-19 | 2013-09-18 | 江苏振龙减震器有限公司 | Rear motorcycle shock absorber with internal spring and external spring |
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| US2533703A (en) * | 1947-06-21 | 1950-12-12 | Black & Decker Mfg Co | Impact nut runner |
| CN86108967A (en) * | 1986-12-29 | 1988-07-20 | 吉江少 | Inherently effectively damped coiled spring |
| US5361853A (en) * | 1991-11-29 | 1994-11-08 | Ryobi Limited | Power tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112703087A (en) * | 2018-07-27 | 2021-04-23 | 费斯托工具有限责任公司 | Hand-held power tool, in particular impact screwdriver |
| CN112703087B (en) * | 2018-07-27 | 2023-06-13 | 费斯托工具有限责任公司 | Hand-held tool machine, in particular impact screwdriver |
| CN112975860A (en) * | 2019-12-02 | 2021-06-18 | 株式会社牧田 | Impact tool |
| CN112975860B (en) * | 2019-12-02 | 2023-10-10 | 株式会社牧田 | Impact tool |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102015209406A1 (en) | 2016-11-24 |
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