CN102896620B - Gearshift and the machine tool comprising gearshift - Google Patents
Gearshift and the machine tool comprising gearshift Download PDFInfo
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- CN102896620B CN102896620B CN201210260820.5A CN201210260820A CN102896620B CN 102896620 B CN102896620 B CN 102896620B CN 201210260820 A CN201210260820 A CN 201210260820A CN 102896620 B CN102896620 B CN 102896620B
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- actuation element
- gearshift
- sliding block
- power transmission
- actuating device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
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Abstract
The present invention relates to the machine tool with gearshift, and relate to the gearshift of the power transmission (30) for Power-driven hand tool or electric tool, especially for transmission, this power transmission (30) has at least three transmissions configuration (I, II, III, IV), wherein gearshift has actuating device (19), and described actuating device is constructed to power transmission (30) from any initial drive configuration (I; II; III; IV) any target gear is directly switched to configure.
Description
Technical field
The present invention relates to the gearshift (shiftingdevice) of the power transmission for Power-driven hand tool or electric tool, especially for transmission, described power transmission has at least three transmissions configurations.The invention still further relates to machine tool, particularly relate to the Power-driven hand tool or electric tool with this gearshift.
Background technology
Machine tool, particularly hand-hold power tool or electric tool, can be used to by cutting, segmentation, machining or remove material and processing work.Also the assembly works such as such as rivet inserts, screw connects can be performed with it.Conventional hand-hold power tool can be drilling machine, impact drill, driver, grinder, cutting machine or saw form.
In order to increase the flexibility in use, the hand-hold power tool of high-quality or electric tool have the power transmission of shift especially, such as gear shift transmission.Thus such as output speed or Driving Torque can be suitably applicable to specific service condition.Here, basic target is by providing multiple transmission to configure, such as gear level, and suitably makes actuation movement slow down or speedup.Like this, the step level between the scope (namely ratio ranges) of power transmission and driven separately configuration can be applied to the use field of expecting.
Electric tool with Multi-stage transmission (it has three gear levels altogether) is learnt from EP1364752B1.EP1886769B1 discloses the machine tool with multi-stage planetary gear (it comprises four gear levels).The gear level arranged is more, and the instrument coupled just can more early work in its optimized range of speeds.But on the contrary, along with the increase of the quantity of gear level, user operation complexity also increases.
Summary of the invention
Given this, the object of the invention is the gearshift of openly a kind of power transmission for hand-hold power tool or electric tool, especially for gear drive, even if when the quantity that the transmission of power transmission configures increases, this gearshift also allows the gear change process that can simply and intuitively perform, and is preferably to carry out clear and definite, errorless operation.In addition, machine tool, particularly Power-driven hand tool or the electric tool of this gearshift will also openly be had.
Realize according to the gearshift of this object of the present invention by the power transmission for Power-driven hand tool or electric tool, especially for transmission, described power transmission has three transmission configurations, gearshift has actuating device, and described actuating device is configured to power transmission to be directly switch to any target gear device from any initial drive configuration.
Object of the present invention is like this implemented.
According to the present invention, high flexibility and the fast operating of gearshift become possibility, and this can make Power-driven hand tool or electric tool can have the operational comfort of increase and the performance of improvement.
Power transmission can be directly switch to the 3rd transmission configuration from such as the first transmission configuration by operator now, that is, is switched to third gear (thirdgear) from first grade, and does not need first to select the second transmission configuration with actuating device.Like this, can be avoided such as strictly compulsoryly disclosed in aforesaid EP1364752B1 and EP1886769B1 activating in turn.
Such as, the power transmission of irremovable instrument (such as jammed rig) can configure from the transmission configuration transmission be directly switch to corresponding to the gear level with high torque (HT) such as corresponding to " top gear ".When such a situation occurs, operator " can skip " middle transmission configuration.In order to discharge jammed instrument, such as, gearshift can suitably combine with rotation reversing arrangement.
Due to can avoid complicated in turn or continuous print activate, therefore hand-off process can be realized more quickly.Known shift power transmission may have following shortcoming: when from first transmission configuration be switched to the 4th transmission configuration time, such as, must select first respectively second and the 3rd transmission configuration.Particularly when the machine tool of such as Power-driven hand tool or electric tool, power transmission lacks usually for the sychronisation of the gear shift comfort level improved or similar auxiliary.Other shortcoming may be, for each transmission configuration that will be skipped, and all must the driving of first actuating mechanism instrument.Such as being gear drive in " the anti-tooth of tooth " position at first, in order to involved parts are moved into " tooth is to gap " position, this may be required.Therefore involved central gearshift lever process can be completed.Direct selection according to the present invention avoids this shortcoming.
Power transmission can be understood to mean the traction drive of such as gear shift transmission, gear drive, planetary gear or shift.But power transmission also can be so-called virtual gear form.In the case of the electric tool, such as, virtual gear can comprise the suitable induction (influencing) of the driver winding of CD-ROM drive motor.Like this, the indicatrix of CD-ROM drive motor can change in the mode of " class gearbox ".Can by connecting in a particular manner and cutting off driver winding and produce the friction speed-torque characteristic curve with such as Different Slope.
Transmission configuration can be understood to mean specific gear ratio, certain relation especially between input speed and output speed.But transmission configuration also can comprise the adaptation of stop or hold function or direction of rotation.
According to another structure of the present invention, actuating device coordinates with at least one engaging element, preferably coordinates with the first and second engaging elements, and engaging element can be moved and configure with transmission power transmission being optionally switched to expectation.
Especially in gear-driven situation, engaging element can be shift fork, gear shift wheel, gear shift pinion or ring gear form.But engaging element also can be shift member form, this shift member is suitable for suitably affecting actuating device to produce the transmission configuration expected.Especially, such as, its like that can comprise clutch, brake, locking device or can coordinate with the independent gear in gear drive.
According to another aspect of the present invention, actuating device comprises actuation element, actuation element can be coupled to this at least one engaging element and move for it, and actuation element can move along two spatial axis and actuation element preferably has manual control element.
In principle, can select from six possible spatial axis (that is, three pivot centers and three linear axis) for two suitable spatial axis activating.Preferably, such as, can determine a linear axis, and can select further to allow the pivot center around the rotation of selected linear axis.Other combination is possible equally.The actuating movement performed by operator directly can be transferred to actuation element by manual control element in a straightforward manner.
Actuation element such as can be constructed to rotation-pushing member, rotation-pushing member or spherical rotation or spinner member.In addition, actuation element can be constructed to allow along plane moving on two direction in spaces.The given enough large radius of gyration or radius of turn, such as, rotatable parts or rotary part also can be understood to be as the criterion and promote motion.If actuation element is moveable (that is, having two frees degree substantially) along two spatial axis, then the gear shift that can replace order activates and realizes the direct selection of the transmission configuration of multiple expectation in a straightforward manner.
According to research and development of the present invention, actuation element coordinates with guide element, and described guide element is that actuation element defines at least three latched positions, and actuation element directly can move between these at least three latched positions.
Like this, the risk of maloperation can be significantly reduced.Especially, can avoid less desirable shift pattern, the accident of such as target gear configuration " exceeds " or actuation element is not limiting the adhesion in centre position.Guide element such as can be constructed to a part for the housing of Power-driven hand tool or electric tool.
According to the research and development of this configuration, guide element comprises at least leg-of-mutton, to have four corners especially guidance surface, and actuation element (preferably the manual control element of actuation element) is moveable along this guidance surface.
Guidance surface can be understood to the opening in the housing of such as Power-driven hand tool or electric tool, which defines region or the path plane of the permission position describing actuation element.In other words, guidance surface can be two-dimentional steering gate form, and this two-dimentional steering gate can directly arrive each point from each point.
If the manual control element of actuation element protrudes through guide area, be preferred.Manual control element therefore, it is possible to abut with guide element in latched position.
Latched position can be assigned to the corner of guide area.Self-evidently, the corner of guide area can be rounding, such as, to correspond to the shape of manual control element.
Like this, the clearly distribution of shift pattern (that is, each transmission configuration) to latched position can be guaranteed.Each latched position (such as, each corner of guide area) directly can arrive from another latched position, and do not need actuation element or its manual control element must through another latched position.
Latched position allows reliably and intuitively to operate.The danger of maloperation can be reduced significantly.Due to the latched position (clearly and reliably can arrive described latched position) of the restriction of actuating device, can " blind " operation gearshift.Operator can concentrate in current work disposal and can not be divert one's attention too much by gear-change operation.
Manual control element is combined with the latched position of guide element and can be used as shift pattern indicator further.Manual control element the arranging in a corner of guide area of actuation element allows to carry out fast and the detection of simple sense of touch and vision current gearshift state or contemporary transmissions configuration.
According to another aspect of the present invention, actuating device comprises at least two driven sliding block (slaveslider), and described driven sliding block can optionally move.
Driven sliding block can be coupled to housing by such as forcing the guiding device connecting (positivelyconnected) or optional connection (non-positivelyconnected) or be coupled to actuation element.Driven sliding block can be designed to be applied to the gear shift motion transfer of actuation element to corresponding engaging element.
According to the research and development of this structure, the first driven sliding block can move generally through the axis of the motion of actuation element promotes component, and the second driven sliding block can move generally through the rotative component of the motion of actuation element.
Like this, the gear shift campaign being applied to actuation element can be broken down into component.Axial promotion component and rotative component can correspond to actuation element can along the selected spatial axis of its movement.Each component of motion can be used for a movement making respectively in two driven sliding block.The district (free-runzone) that is free to slide by providing in such as this design regulates for less desirable component motion each driven sliding block.
Axially promote the promotion component that component can be understood to such as longitudinal, the promotion component of this longitudinal direction occurs substantially on the direction of the longitudinal axis of power transmission.This axis can such as with the coincides of the tool spindle of machine tool, can be arranged to parallel or can be arranged to vertical with it with it.
Such as produce rotative component or rotational component by actuation element around the rotation of longitudinal axis.
Principle will be understood that, the rotative component of reduced form is as laterally promoting component, and it is essentially perpendicular to and axially promotes component orientation.The most important thing is, these two component motions are separated and differentiable direction or dimension aligning along two, are separated with the component realizing expecting.
According to another structure of the present invention, provide the circumferential recess (circumferentialgroove formed at least in part, circumferential recess), by means of this circumferential recess, actuation element is coordinated with the first driven sliding block by driver, provide the diagonal grooves (diagonalgroove) formed at least in part, by means of this diagonal grooves, actuation element is coordinated with the second driven sliding block by driver simultaneously.
Circumferential recess and diagonal grooves such as can be formed in actuation element or be formed in corresponding driven sliding block.Circumferential recess can be such as hoop form of slots.The rotation of actuation element or rotation cause driver to move in circumferential recess.Like this, can realize being free to slide district.The dragging campaign that can cause the correspondence of the first driven sliding block substantially transverse to the displacement of the longitudinal length of circumferential recess of actuation element.
On the contrary, actuation element rotation or rotate the length travel that can cause the second driven sliding block in the interaction (interplay) between diagonal grooves and associated drive.
Diagonal grooves also can be understood to spiral groove or have the inclination circumferential recess of gradient.
The gradient of diagonal grooves can be set to constant.But, the variable inclination of the inside or outside recess having keyed end or have gentle transition also can be provided.Like this, the direct motion of gear shift campaign can be strengthened.
Observe in the expanded state, circumferential recess and diagonal grooves can be understood to be in the angle being less than 90 ° and two the smooth grooves arranged.
In other words, gear shift campaign can cause the cardinal principle axial displacement of the first engaging element or the second engaging element by means of the first driven sliding block or the second driven sliding block, the axial displacement of the first engaging element is realized by the axial displacement of actuation element, and the axial displacement of the second engaging element is realized with rotation, rotation or reduced form by the lateral displacement of actuation element by means of manual control element by actuation element.In this case, the rotation of actuation element or the steering gate that is rotated through diagonal grooves form are converted into and promote motion.
As being free to slide region for what avoid the second driven sliding block axially to promote to drag due to the length travel of actuation element direct, another groove that the direction of longitudinally axis extends can be provided substantially.
According to another aspect of the present invention, actuation element is constructed to the ring around power transmission substantially.
Like this, particularly in planetary situation, compact structure can be produced.Actuation element can be such as complete loop type or ring section form.
According to another structure of the present invention, actuation element has many parts (particularly two parts) structure, and at least the first actuation element portion is longitudinally moveable relative to the second actuation element portion.
Like this, be free to slide region can be formed in actuation element itself.Therefore the less desirable component motion in its action in two driven sliding block on can be stoped.Alternatively, the first actuation element portion and the second actuation element portion can be constructed to be relative to each other rotating.
As the result of these means, installing space demand can be reduced.Extra component can be avoided.
According to another aspect of the present invention, actuating device is acted on this at least one engaging element by least one flexible member.
In this case, this at least one flexible member can be used as energy storing device.Like this, if the parts of such as involved power transmission can not shift out as required or move into engagement at first, the gearshift procedure started can be interrupted.Such as in gear drive, this may be caused by " the anti-tooth of tooth " position.In the upper once startup of CD-ROM drive motor, can produce desired locations, therefore gearshift procedure can be terminated automatically.This at least one flexible member can transmit the power needed for gearshift procedure under a time delay.
According to the research and development of this structure, two flexible members of spring stirrup (springstirrup) form can be provided, first spring stirrup can be coupled to the first driven sliding block and be coupled to the first engaging element, and the second spring stirrup can be coupled to the second driven sliding block and be coupled to the second engaging element.
Spring stirrup can have the shape of such as circular (a particularly round part), or can be U-shaped.In the corresponding recesses that spring stirrup such as can be bonded on corresponding driven sliding block or engaging element by bending spring terminal or recess.
According to another structure of the present invention, power transmission is the planetary form with at least two planetary stages, and especially, the ring gear of described planetary stage can be optionally removable by means of gearshift.
Like this, the gear shift transmission such as with four gears can be implemented.Ring gear can be used as engaging element, or can be activated by engaging element and by optionally locking or release.
In planetary gear, planetary stage can have multiple transmission configuration, and described multiple transmission configuration can be implemented by the optionally locking of actuated element, release or connection.
Such as, planetary stage can be driven by central gear, and described central gear engages with at least one planetary gear, and this at least one planetary gear runs along the ring gear being fixed to housing in the first transmission configuration.At outlet side, the planet carrier driven by the circulation of planet can be set.Planet carrier can be coupled to the central gear of such as the second planetary stage.In the second transmission configuration of planetary stage, ring gear can such as be released from housing and, except engaging with planetary gear, also can start to engage with planet carrier.Therefore planetary stage can be blocked and can circulate when not having inner relative motion.If provide two other transmission configurations in similar or different modes in the second planetary stage, then can produce four transmissions configurations altogether.
Planetary gear can be such as tubular or columniform, and, especially, can interact with annular actuation element.Like this, available installing space can be effectively utilized especially.
Self-evidently, replace planetary gear, can provide mixed drive (combination of such as planetary stage and gear stage), wherein input and output are not arranged coaxially yet.
Other versions of transmission are easily expected.
Object of the present invention is also realized together with the gearshift any one of aforementioned aspect by machine tool, described machine tool is Power-driven hand tool or electric tool particularly, comprise housing, input queued switches, output driving and power transmission, described power transmission be connected input queued switches and export drive between and there are at least three transmissions configure.
According to another configuration of this machine tool, gearshift coordinates with the guide element be arranged on housing, and this guide element comprises the guidance surface of the opening be constructed in housing.
Self-evidently; under the prerequisite not departing from scope; preceding feature of the present invention and will be explained that those features illustrated not only can with the incompatible use of the particular group of specifying hereinafter, and can combinationally using or being used alone with other.
Accompanying drawing explanation
Further feature and advantage of the present invention from hereinafter with reference to accompanying drawing to apparent the description of some preferred illustrative embodiments, wherein:
Fig. 1 is the stereogram according to machine tool of the present invention;
Fig. 2 is that the contracted notation of the power transmission comprising multiple transmission configuration represents;
Fig. 3 is the top view of the machine tool according to Fig. 1;
Fig. 4 a-4c shows the expression of the simplification of the actuating device according to gearshift of the present invention be in different gear positions;
Fig. 5 is the illustrative expression of other section components of actuating device according to Fig. 4 a to 4c;
Fig. 6 a-6c shows other views of the actuating device according to Fig. 4 a to 4c, it considers the section components according to Fig. 5 being in different gear;
Fig. 7 is the three-dimensional view of actuation element;
Fig. 8 a-8b is the reduced representation of different guide element and guidance surface;
Fig. 9 is the front view for being used according to another actuating device in gearshift of the present invention;
Figure 10 a-10b shows along line X-X through two sectional views intercepted according to Fig. 9 actuating device;
Figure 11 a-11c shows the different stereograms of the actuating device according to Fig. 9, and
Figure 12 a-12b shows other stereograms of the actuating device according to Fig. 9, shows selected parts to excise the mode represented.
Detailed description of the invention
Fig. 1 shows the machine tool of the form according to Power-driven hand tool of the present invention, and this Power-driven hand tool is integrally represented by label 10.
Power tool 10 is such as implemented as electric tool.Power tool 10 has housing 12, and longitudinal axis 16 extends through this housing 12.The output of tool spindle 14 form drives the front end place being formed on the housing 12 of power tool 10.Tool spindle 14 is for receiving tool (not shown in detail).Such as, tool spindle 14 can pass through hammer (toolchuck, cutter holder) (not shown) and is connected to drill bit or screwdriver heads.
Power tool 10 also comprises power transmission 30(and does not illustrate in FIG; See Fig. 2).Power transmission 30 can switch to different speed change configurations by gearshift 18.Gearshift 18 has actuating device 19, and this actuating device 19 can manually operate by control element 20.
The housing 12 of power tool 10 also comprises clamping zone 22, and starting switch 24 is arranged on clamping zone 22.Energy supply device 26 is coupled to the basal region of housing 12.In current example, energy supply device 26 is such as shown as battery pack.Alternatively, the bus of power tool 10 connects the energy supply of (mains-connected) is possible.
Power tool 10 is shown as cordless drill or wireless driver in this example.But it can be similarly Boring machine, impact drill, impact driver, saw, grinder, have vibration output drive power tool etc.
To be explained the example arrangement of the power transmission 30 in the power tool 10 that may be used in such as shown in Fig. 1 by symbol transmission diagram below with reference to Fig. 2.
Power transmission 30 is represented as planetary gear in this example, and this planetary gear is connected between the tool spindle 14 on the input of CD-ROM drive motor 28 form and outlet side.Clutch 34 is arranged between power transmission 30 and tool spindle 14.In explanation hereafter illustrates, first suppose that gearshift 18 can be used to power transmission 30 be switched to different transmission configurations (such as ratio step level (ratiosteps)).But gearshift 18 also can be used at least one in optionally switch clutch 32,34.Clutch 32,34 optionally can connect or disconnect coupling access component and rotary actuation.Clutch 32,34 can be posittive clutch (positiveclutch) or optional clutch (nonpositiveclutch) form.At least one be constructed to brake in clutch 32,34 or blocking element, such as, so that the parts optionally fixedly to be coupled relative to the housing 12 of power tool 10.
Power transmission 30 comprises two planetary stages 36a, 36b, and for purposes of clarity, these two planetary stages in present exemplary are structurally substantially identical.Planetary stage 36a comprises central gear 38a, and this central gear coordinates with at least one planetary gear 40a, ring gear 42a and planet carrier 44a.Planet carrier 44a comprises driven tooth 46a.On housing sidepiece, the locking tooth 48a that can be coupled to the anti-tooth of locking (blockingcounter-toothing) 50a of ring gear 42a connects with the first row star 36a.Planet carrier 44a is coupled to the central gear 38b of the second planetary stage 36b.Central gear 38b coordinates with at least one planetary gear 40b, ring gear 42b and planet carrier 44b.Planet carrier 44b can be connected to tool spindle 14 by clutch 34.Second planetary stage 36b comprises the passive tooth 46b on planet carrier 44b.On the sidepiece of housing, the locking tooth 48b that can be coupled to the anti-tooth 50b of locking of ring gear 42b connects with the second planetary stage 36b.
In principle, different transmission configuration is switched to by ring gear 42a, 42b relative to the axial displacement of the longitudinal axis 16 in Fig. 1 according to the power transmission 30 of Fig. 2.In fig. 2, the ring gear of the first row star 36a is indicated on two possible position 42a, 42a in simplified form ' in, and the ring gear of the second planetary stage 36b is presented at two positions 42b, 42b similarly ' in.Relevant displacement is represented by two double-head arrows, and these two double-head arrows are indicated by 52a and 52b.In the first transmission configuration, ring gear 42a, 42b are non-rotatably coupled to by their locking anti-tooth 50a, 50b on locking tooth 48a, the 48b on housing.In the configuration of replacing, ring gear 42a ', 42b ' have been moved out of and the engaging of locking tooth 48a, 48b.The anti-tooth 50a ' of locking, 50b ' do not fix relative to housing.In addition, ring gear 42a ', 42b ' are for engaging with planetary gear 40a, 40b and engaging with passive tooth 46a, the 46b of planet carrier 44a, 44b.In the configuration, planetary stage 36a, 36b is all blocked in each case.Ring gear 42a and 42b, planet carrier 44a and 44b, planetary gear 40a and 40b and central gear 38a and 38b of each planetary stage 36a, 36b all can jointly circulate in each case.Therefore, each planetary stage 36a, 36b have two transmission configurations.Four possible transmission configurations are altogether produced for this power transmission 30.
Self-evidently, gearshift 18 can be combined from multiple different power transmission (having very different actuation types, transmission configuration and engaging element especially).
According to the expression in Fig. 2, ring gear 42a, 42b are used as engaging element, and gearshift 18 can directly or indirectly coordinate object for gear shift with this engaging element.Other engaging element is easily expected.Such as, locking tooth 48a, 48b can be configured to movable so that by displacement optionally locking or release ring gear 42a, 42b of described locking tooth 48a, 48b.Other engaging element, switches the engaging element of speed changer, can comprise selector fork, brake, blocking device, gear shift wedge or movable gear especially for the tradition with spaced parallel axes.
Fig. 3 shows the top view of the power tool 10 according to Fig. 1.Manual control element 20 for operating the actuating device 19 of gearshift 18 can move in the region of the guiding area 60 defined by guide element 58.
Manual control element 20 is shown as a little protruding with discoidal in this example.Manual control element 20 has hollow or groove 56(and also sees Fig. 1 or Fig. 7), this hollow or groove 56 can be convenient to thumb or with single finger manipulation actuating device 19.Other configuration is also possible.
If together referring to Fig. 4 a to 7, the structure of the first exemplary embodiment of actuating device 19 becomes clearer.Actuating device 19 comprises actuation element 62, and manual control element 20 can be received within actuation element 62 (also sees Fig. 7).In Fig. 4 a to 4c, show actuation element 62 and be in different shift patterns.Actuation element 62 can such as longitudinally axis 16 direction (see by 72 represent arrows) displacement in the region (see figure 3) limited by guide element 58.Arrow 72 representation space axis, namely linear axis, actuation element can displacement along this linear axis.In addition, guide element 58 allows actuation element 62 rotation within the specific limits or rotation (for the sake of clarity, seeing the arrow represented by 74).Arrow 74 indicates spatial axis (namely rotation), and actuation element can displacement around this rotation.
Actuation element 62 has loop configuration and around inner housing 64.Composition graphs 9 to 12b describes inner housing 64 in more detail hereinafter.Circumferential recess 66 to be formed in actuation element 62 and to coordinate with driver 68, and driver 68 is connected with the first driven sliding block 70.First driven sliding block 70 can be connected to the first engaging element, such as, be connected to the first ring gear 42a shown in Fig. 2, to make its displacement directly or indirectly.Circumferential recess 66 and driver 68 coordinate by this way: actuation element 62 around longitudinal axis 16 rotation or rotate and can not cause the dragging of the first driven sliding block 70.This rotation occurs (contrast actuation element 62 ') in fig. 4b.First driven sliding block 70 does not have displacement.
On the contrary, driver 68 is caused to be dragged by circumferential recess 66 along the promotion campaign on arrow 72 direction.Therefore, in the conversion from Fig. 4 a to Fig. 4 c, actuation element 62 " make the first driven sliding block 70 displacement along the longitudinal direction and therefore can act on engaging element.
Except circumferential recess 66, actuation element 62 also has longitudinal fluting 75(such as, sees Fig. 7).At this longitudinal fluting 75 with the interaction of miscellaneous part, this longitudinal fluting 75 contributes to making the rotation of actuation element 62 or rotate can be used to make engaging element longitudinally displacement.This explains in more detail with reference to Fig. 5 to 6c.
Along with rotation, driver 84a, 84b of actuation element 62 and the second driven sliding block 80 interact to cause its displacement (see figure 5).Diagonal grooves 76 is also arranged in the second driven sliding block 80.Second driven sliding block 80 is accommodated in crosshead guide 82.Crosshead guide 82 allows the rotation of the second driven sliding block 80 and actuation element 62 or rotates to rotate similarly or rotate.Crosshead guide 82 can be such as non-rotatable but can be accommodated in length travel on inner housing 64 or housing 12(is not shown) on.The diagonal grooves 76 of the second driven sliding block 80 coordinates with driver 78, and driver 78 is contained on housing rigidly, such as, be accommodated in the inner on housing 64.Actuation element 62 represented by arrow 74 rotation period second driven sliding block 80 the unwinding (unwinding launches) of motion path can be interpreted as lateral displacement (arrow see representing by 74 ' in Fig. 5) along crosshead guide 82 in simplified form.By the oblique setting with the fixing interactional diagonal grooves of driver 78 76, this lateral displacement of the second driven sliding block 80 creates length travel (arrow see representing by 86) as a result.Therefore the second driven sliding block 80 directly or indirectly can act on the second engaging element (the second ring gear 42b such as shown in Fig. 2), causes described second ring gear 42b will displacement.Although actuation element 62 can not produce any direct dragging in this direction of the second driven sliding block 80 along the length travel of arrow 72, but due to such as driver 84a, 84b in this direction movable be arranged in longitudinal fluting 75, therefore this can occur.
Such as comparison diagram 6a and 6c, this region that is free to slide becomes obvious.In fig. 6 c, actuation element 62 " from Fig. 6 a actuation element 62 position displacement along the longitudinal direction.But the second driven sliding block 80 and driven guider 82 do not have displacement.
When actuation element 62 ' in figure 6b, the corresponding rotation that cause second driven sliding block 80 the same as the rotation of the actuation element 62 shown in Fig. 6 a, and thus cause the length travel of crosshead guide 82.
Like this, as the power transmission 30 as shown in by Fig. 2 such as can by optionally promote and/or rotary-actuated element 62 manual control element 20 and be switched, the transmission that therefore can directly arrive any expectation from any initial drive configuration configures.
As previously explained, Fig. 7 shows the example arrangement of actuation element 62.The region of circumferential recess 66 and the region of longitudinal fluting 75 are arranged on actuation element 62 with the skew of about 180 ° in this example.Alternatively, this region can such as be arranged in a longitudinal direction in tandem, and without any obvious angular deflection.This can allow only one section that actuation element 62 is configured to ring, the half of such as ring or 1/4th.
Fig. 8 a shows the example arrangement of the guide element 58a limiting guide area 60a, and described guide element 58a has four latched positions for four different transmission configuration I, II, III, IV in its corner.Corner is rounded.In order to operate actuation element 62, manual control element 20 can be moved, and such as, from latched position IV, directly moves to other latched position I, II, III(be shown in the arrow represented by 88a, 90a, 92a) in each.Along the rotation or rotation that can produce such as actuation element 62 of moving of arrow 88a.Second driven sliding block 80 such as can be moved and the first driven sliding block 70 is not driven in this case.Manual control element 20 can cause the axis of actuation element 62 to promote to move along moving of arrow 90a.In this case, the first driven sliding block 70 such as the second driven sliding block 80 can be kept not dragging motion by dragging.If manual control element 20 moves along arrow 92a, then there is the aggregate motion axially promoting component and rotative component.Therefore the first driven sliding block 70 and the second driven sliding block 80 both can displacements along the longitudinal direction.
Fig. 8 b shows the substantially similar structure of the guide element 58b with guide area 60b, but this guide element 58b is leg-of-mutton.From latched position II, manual control element 20 directly can move to latched position I or III or vice versa (arrow see being represented by 88b, 90b).Direct transfer between latched position I and II is possible equally.
In order to improve gear shift comfort level further, such as, the sidepiece of guide area 58a, 58b can slightly curve inwardly.Like this, even more clearly latched position can be detected during operation.
With reference to figure 9 to 12b, the actuating device 19a of replacement will be explained in more detail.Compared with the actuating device 19 shown in Fig. 4 a to Fig. 7, illustrate in greater detail all parts and provide miscellaneous part.Will readily appreciate that, this means also can be used in the situation of above-mentioned illustrative examples.
Fig. 9 shows the front view of actuating device 19a.Actuating device 19a comprises actuation element 62a, and actuation element 62a has many parts structure comprising actuation element portion 96a and another actuation element portion 96b.Actuation element portion 96a and 96b is also shown in Figure 11 a to 11c by sliding guide 98() be interconnected.Sliding guide 98 is as being free to slide region to avoid the dragging of actuation element portion 96b during the length travel of actuation element portion 96a.Realized by longitudinal fluting 75 like that in this function actuation element 62 as shown in FIG. 7.When actuation element portion 96a is rotated or rotates, actuation element portion 96b is dragged.
First driven sliding block 70 is such as received on inner housing 64 by crosshead guide 100 in longitudinal movable mode and the second driven sliding block 80 is such as received on inner housing 64 by crosshead guide 102 and (also sees Figure 10 a, 10b and 12a).First driven sliding block 70 is coupled to spring stirrup 104a, and the second driven sliding block 80 is coupled to spring stirrup 104b.Spring stirrup 104a, 104b have spring terminal 106a, 106b, and described spring terminal such as can be made into crank shape or bend.Opening 108a, 108b(that spring terminal 106a, 106b protrude through inner housing 64 are shown in Figure 10 a and Figure 11 a).Spring terminal 106a, 106b can be engaged in engaging element (ring gear 42a, 42b such as shown in Fig. 2) in this region, to realize gearshift procedure.Spring stirrup 104a, 104b can temporarily stored energys, if when such as involved tooth can not engage each other at first, described energy starts along with CD-ROM drive motor 28 the gear shift campaign started in order to complete next time.
Spring stirrup 104a, 104b are accommodated in spring groove 110a, 110b of the first driven sliding block 70 and the second driven sliding block 80 (see Figure 10 b) respectively.In the example of the actuating device 19 as shown in Fig. 4 a to Fig. 7, this flexible member can be accommodated in driven sliding block 70,80 in a similar fashion, and is also contained on crosshead guide 82.
If together with reference to Figure 10 b, 11c and 12a, obviously in the example of actuating device 19a, circumferential recess 66 not to be arranged on actuation element 62a but to be arranged in the first driven sliding block 70.On the contrary, interactional driver 68 is arranged on the actuation element portion 96a of actuation element 62a now with circumferential recess 66.This present the reversion of simple kinematics and also easily arrive when miscellaneous part.
Similarly, when such as actuating device 19a, the parts corresponding with the diagonal grooves 76 of structure shown in Fig. 5, longitudinal fluting 75, driver 84a, 84b and driver 78 are implemented as the form of improvement.Actuation element portion 96b can such as jointly be rotated around longitudinal axis 16 by the suitable guider (not shown in detail) on housing and actuation element portion 96a, but not axis 16 displacement along the longitudinal.Diagonal grooves 76 is arranged on (see Figure 10 b, 11b and 12b) in actuation element portion 96b.Different from the driver 84 in Fig. 5, the driver 114 be not usually rigidly mounted to housing is accommodated in the diagonal grooves 76 of actuation element portion 96b.Driver 114 is arranged on the protuberance 112 of the second driven sliding block 80.
The rotation that manually rotation of actuation element 62a carried out of control element 20 or rotation (arrow 74 see in Figure 11 c) carry out actuation element portion 96b by actuation element portion 96a drags.In this case, according to oblique setting or the gradient of the diagonal grooves 76 in actuation element portion 96b, driver 114 moves in a longitudinal direction, thus makes the second driven sliding block 80 displacement.The rotation of actuation element portion 96a can not cause the displacement of the first driven sliding block 70, because driver 68 is movably (see Figure 12 a) in circumferential recess 66.
The promotion campaign (arrow 72 see in Figure 11 c) of the manual control element 20 of actuation element 62a acts on actuation element portion 96a and does not still act on actuation element portion 96b, is axially promoting outside dragging because the latter is excluded by sliding guide 98.The circumferential recess 66(that the length travel of actuation element portion 96a is transmitted to the first driven sliding block 70 by driver 68 is shown in Figure 12 a).
When to have in the example of actuating device 19a by explain structure, the power transmission 30 shown in Fig. 2 such as also can be switched to four different transmissions to configure simply.About operation logic, the explanation can carried out with reference to composition graphs 8a and 8b.
Self-evidently, be possible to further improving according to the structure of aspect of the present invention.These improvement can comprise, and especially, groove or door track, driver or guide rail are relative to the configuration of actuation element 62, driven sliding block 70 and 80, crosshead guide 82, housing 12, inner housing 64 or other elements.By the exchange that geometry reversion, kinematics reversion or element are right, this structure can obtain from described exemplary embodiment.
Claims (18)
1. the gearshift for the power transmission (30) of Power-driven hand tool or electric tool, described power transmission (30) has at least three transmissions configuration (I, II, III, IV), wherein said gearshift comprises actuating device (19), and described actuating device is configured to described power transmission (30) from any initial drive configuration (I, II, III, IV) any target gear is directly switched to configure, wherein, described actuating device (19) comprises at least two driven sliding block (70 of optionally movement, 80), it is characterized in that, described actuating device (19) comprises actuation element (62), described actuation element can be couple at least one engaging element (42a, 42b) for the displacement of at least one engaging element described, and wherein, described actuation element (62) is along two spatial axis (72, 74) can displacement, and the first driven sliding block (70) promotes component (72) by the axis of the motion of described actuation element (62) can be moved, second driven sliding block (80) can be moved by the rotative component (74) of the motion of described actuation element (62).
2. gearshift according to claim 1, described gearshift is configured to the gearshift of the transmission of electric tool.
3. gearshift according to claim 1, wherein, described actuating device (19) coordinates with at least one engaging element (42a, 42b), and at least one engaging element described is can the configuration (I, II, III, IV) optionally described power transmission to be switched to expectation of displacement.
4. gearshift according to claim 3, wherein, described actuating device (19) coordinates with at least the first engaging element and the second engaging element.
5. gearshift according to claim 1, wherein, described actuation element (62) comprises manual control element (20).
6. gearshift according to claim 5, wherein, described actuation element (62) coordinates with guide element (58), described guide element is that described actuation element (62) defines at least three latched positions, and described actuation element (62) can direct displacement between described at least three latched positions.
7. gearshift according to claim 6, wherein, described guide element (58) comprises the guide area (60) with at least three corners, and described actuation element (62) can displacement along described guide area.
8. gearshift according to claim 7, wherein, described guide area (60) are at least four corners.
9. gearshift according to claim 7, wherein, the described manual control element (20) of described actuation element (62) can displacement along described guide area.
10. gearshift according to claim 1, also comprise the circumferential recess (66) formed at least in part, by described circumferential recess, described actuation element (62) coordinates with described first driven sliding block (70) by means of driver (68), and also comprise the diagonal grooves (76) formed at least in part, by described diagonal grooves, described actuation element (62) coordinates with described second driven sliding block 80 by means of driver (78,114).
11. gearshifts according to any one of claim 1 and 5 to 10, wherein, described actuation element (62) is constructed to the ring around described power transmission (30) substantially.
12. gearshifts according to claim 1, wherein, described actuation element (62) has many parts structure and wherein at least the first actuation element portion (96a) can length travel relative to the second actuation element portion (96b).
13. gearshifts according to claim 12, wherein, described actuation element (62) has two-part structure.
14. gearshifts according to claim 3, wherein, described actuating device (19) is acted on described at least one engaging element (42a, 42b) by least one flexible member (104a, 104b).
15. gearshifts according to claim 14, also comprise two flexible members (104a, 104b) of spring mushroom forest, first spring stirrup (104a) can be coupled to described first driven sliding block (70) and be coupled to the first engaging element (42a), and the second spring stirrup can be coupled to described second driven sliding block (80) and be coupled to the second engaging element (42b).
16. gearshifts according to claim 1, wherein, described power transmission (30) is constructed to the planetary gear comprising at least two planetary stages (36a, 36b).
17. gearshifts according to claim 16, wherein, described planetary gear comprises the planetary stage (36a, 36b) with ring gear (42a, 42b), and described ring gear can optionally displacement by described gearshift (18).
18. 1 kinds of Power-driven hand tool or electric tool, comprise housing (12), input queued switches (28), export driving (14) and power transmission (30), described power transmission be connected described input queued switches (28) and described export to drive between (14) and comprise at least three transmissions configure (I, II, III, IV), described at least three transmissions configuration comprises according to gearshift in any one of the preceding claims wherein (18).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP11175592.2 | 2011-07-27 | ||
| EP20110175592 EP2551063B1 (en) | 2011-07-27 | 2011-07-27 | Switch device and machine tool with a switch device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102896620A CN102896620A (en) | 2013-01-30 |
| CN102896620B true CN102896620B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210260820.5A Active CN102896620B (en) | 2011-07-27 | 2012-07-25 | Gearshift and the machine tool comprising gearshift |
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| Country | Link |
|---|---|
| EP (1) | EP2551063B1 (en) |
| CN (1) | CN102896620B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017119808A1 (en) | 2017-08-29 | 2019-02-28 | Festool Gmbh | The handheld machine tool |
| DE102018111792A1 (en) | 2017-08-29 | 2019-02-28 | Festool Gmbh | The handheld machine tool |
| DE102017119807A1 (en) * | 2017-08-29 | 2019-02-28 | Festool Gmbh | The handheld machine tool |
| US10744632B2 (en) | 2017-11-29 | 2020-08-18 | Nanjing Chervon Industry Co., Ltd. | Power tool |
| CN109834657B (en) * | 2017-11-29 | 2021-01-19 | 南京德朔实业有限公司 | Power tool |
| CN112936191A (en) * | 2019-12-10 | 2021-06-11 | 苏州宝时得电动工具有限公司 | Hand-held power tool |
| DE102022212712A1 (en) | 2022-11-28 | 2024-05-29 | Robert Bosch Gesellschaft mit beschränkter Haftung | Hand tool with a switchable gearbox |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2098708A (en) * | 1936-01-27 | 1937-11-09 | Gen Motors Corp | Gear shift mechanism |
| GB2315438A (en) * | 1996-07-23 | 1998-02-04 | Bosch Gmbh Robert | Speed selection for an electric handtool |
| US6070675A (en) * | 1998-03-04 | 2000-06-06 | Scintilla Ag | Gear shiftable planetary transmission |
| CN101082366A (en) * | 2006-06-01 | 2007-12-05 | 梅塔波沃克有限公司 | Electric hand tool |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10222824A1 (en) | 2002-05-21 | 2003-12-04 | Hilti Ag | Power tool with multi-stage gear |
| US7199316B2 (en) * | 2004-09-10 | 2007-04-03 | W.T. Storey, Inc. | Multifunction switch for operating a device in a sealed container |
| DE102006037191A1 (en) | 2006-08-09 | 2008-02-14 | Tts Tooltechnic Systems Ag & Co. Kg | Machine tool with multi-stage planetary gear |
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2011
- 2011-07-27 EP EP20110175592 patent/EP2551063B1/en active Active
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2012
- 2012-07-25 CN CN201210260820.5A patent/CN102896620B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2098708A (en) * | 1936-01-27 | 1937-11-09 | Gen Motors Corp | Gear shift mechanism |
| GB2315438A (en) * | 1996-07-23 | 1998-02-04 | Bosch Gmbh Robert | Speed selection for an electric handtool |
| US6070675A (en) * | 1998-03-04 | 2000-06-06 | Scintilla Ag | Gear shiftable planetary transmission |
| CN101082366A (en) * | 2006-06-01 | 2007-12-05 | 梅塔波沃克有限公司 | Electric hand tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102896620A (en) | 2013-01-30 |
| EP2551063A1 (en) | 2013-01-30 |
| EP2551063B1 (en) | 2014-04-02 |
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