CN208262765U - Power tool - Google Patents

Abstract

The utility model discloses a kind of power tools, comprising: output shaft, prime mover, shell, transmission device and gearshift；Transmission device includes: the first movable part, the second movable part and device housing；First movable part is arranged around a central axis, and the second movable part and the first movable part are coaxially disposed；First movable part and device housing composition are slidably connected, and the second movable part and device housing hook are at being slidably connected；Gearshift includes: the first shifting element, the second shifting element and operating parts；Operating parts and shell are constituted using central axis as the rotation connection of axis；Operating parts is also formed or is connected with: the first driving structure and the second driving structure；First driving structure includes the first driving inclined-plane contacted with the first shifting element, and the second driving structure includes the second driving inclined-plane contacted with the second shifting element；First driving inclined-plane intersects with first axle inclination, and the second driving inclined-plane intersects with second axis inclination.The power tool structure is simple and convenient to operate.

Description

Power tool

Technical field

The utility model relates to a kind of power tools, and in particular to the gearshift of power tool.

Background technique

It would generally include the gear-box for deceleration in the power tool of existing such as electric drill, screwdriver one kind.Gear Case would generally have multiple and different reduction ratio, therefore in order to enable power tool can have different output revolving speeds, power Tool further includes the gearshift for switching over gear-box between different reduction ratio, still, existing shift Apparatus structure is relatively complicated.

Utility model content

To solve the deficiencies in the prior art, it is changed the purpose of this utility model is to provide a kind of including relatively simple for structure The power tool of blocking means.

In order to achieve the above objectives, the utility model adopts the following technical solutions:

A kind of power tool, comprising: output shaft, prime mover, shell, transmission device and gearshift；Output shaft is for defeated Power out, prime mover include or are connected with drive shaft, and shell is used for for accommodating prime mover, transmission device in output shaft and drive The transmitting of power is realized between moving axis, transmission device has so that four transmission shapes that output shaft is exported with different revolving speeds State, gearshift switch between different drive states for driving transmission device；Transmission device include: the first movable part, Second movable part and device housing；First movable part is arranged around a central axis, and the second movable part and the first movable part are coaxial Setting, device housing are formed with the accommodating chamber for accommodating the first movable part and the second movable part；First movable part and device shell Body constitutes being slidably connected along the direction for being parallel to central axis, the second movable part and device housing hook and is parallel to central axis at edge The direction of line is slidably connected；Gearshift includes: the first shifting element, the second shifting element and operating parts；First shift member Part is constituted with device housing using first axle as the rotation connection of axis, and the first shifting element further includes connecting the first movable part simultaneously The the first shift portion for driving the first movable part to slide when the first shifting element is rotated using first axle as axis；Second shift member Part is constituted with device housing using second axis as the rotation connection of axis, and the second shifting element further includes connecting the second movable part simultaneously The the second shift portion for driving the second movable part to slide when the second shifting element is rotated using second axis as axis；Operating parts includes using In the operation portion for user's operation；Operating parts and shell are constituted using central axis as the rotation connection of axis；Operating parts also formed or Person is connected with: the first driving structure and the second driving structure；First driving structure includes contacting and grasping with the first shifting element Workpiece rotate when drive the first shifting element to rotate using first axle as axis the first driving inclined-plane, the second driving structure include with The contact of second shifting element and the second driving for driving the second shifting element to rotate using second axis as axis in operating parts rotation Inclined-plane；Wherein, the plane where the first driving inclined-plane and first axle inclination intersect, the plane where the second driving inclined-plane and the The inclination intersection of two axis.

Further, gearshift further include: the first biased element and the second biased element；First biased element generates One biasing force for being kept in contact the first shifting element and the first driving structure, the second biased element, which generates one, makes second to change The biasing force that gear element and the second driving structure are kept in contact.

Further, the first shifting element includes: first to be driven portion and first rotating shaft portion；First is driven portion and the first driving Structure contact, first rotating shaft portion are the pivot point that the first shifting element and device housing constitute rotation connection；Second shifting element It include: second to be driven portion and the second shaft；Second is driven portion contacts with the second driving structure, and the second shaft is the second shift Element and device housing constitute the pivot point of rotation connection；Wherein, first portion and the setting of the first shift portion are driven in first rotating shaft The two sides in portion, second, which is driven portion and the second shift portion, is arranged in the two sides of the second shaft.

Further, the first driving structure includes two the first driving inclined-planes, and the first driving structure further includes connection two The first of first driving inclined-plane is faced directly；Second driving structure includes two the second driving inclined-planes, and the second driving structure further includes connecting Connect two the second driving inclined-planes second is faced directly；Wherein, the plane where third driving inclined-plane intersects with first axle inclination, the One face directly where plane it is parallel with first axle；Plane where 4th driving inclined-plane intersects with second axis inclination, and second Plane where facing directly is parallel with second axis.

Further, the first axle of the first shifting element rotation and the second axis of the second shifting element rotation are mutually flat Row.

Further, the first axle of the first shifting element rotation is mutually perpendicular to central axis；Second shifting element turns Dynamic second axis is mutually perpendicular to central axis.

Further, transmission device is also formed with the first arcuate socket extended along the circumferencial direction around first axle and edge Extend the second arcuate socket around the circumferencial direction of second axis, the first shifting element passes through the first arcuate socket, the second shifting element Across the second arcuate socket.

Further, the first movable part is formed with first annular slot, and the first shift portion is inserted into first annular slot；Second activity Part is formed with the second annular groove, and the second shift portion is inserted into the second annular groove.

Further, operating parts is also formed with multiple grooves, and device housing, which is connected with, is in different biographies in transmission device The elastic slice in different grooves is inserted into when dynamic state.

Further, power tool includes: the collet for connecting drill bit；Collet is connected to output shaft.

The utility model has the beneficial effect that the structure of gearshift is simple, and user is easier to operate.

Detailed description of the invention

Fig. 1 is the perspective view of the power tool of first embodiment；

Fig. 2 is the cross-sectional view of the power tool in Fig. 1；

Fig. 3 is that partial shell, transmission device and the gearshift in Fig. 1 are located at perspective view when 1 gear is set in operating parts；

Fig. 4 is the cross-sectional view of structure shown in Fig. 3；

Fig. 5 is that partial shell, transmission device and the gearshift in Fig. 1 are located at perspective view when 2 gears are set in operating parts；

Fig. 6 is the cross-sectional view of structure shown in Fig. 5；

Fig. 7 is that partial shell, transmission device and the gearshift in Fig. 1 are located at perspective view when 3 gears are set in operating parts；

Fig. 8 is the cross-sectional view of structure shown in Fig. 7；

Fig. 9 is that partial shell, transmission device and the gearshift in Fig. 1 are located at perspective view when 4 gears are set in operating parts；

Figure 10 is the cross-sectional view of structure shown in Fig. 9；

Figure 11 is the explosive view of structure shown in Fig. 3；

Figure 12 is the explosive view of the device housing and gearshift in Fig. 4；

Figure 13 is the perspective view at another visual angle of structure shown in Figure 12；

Figure 14 is the explosive view of the gearshift in Fig. 4；

Figure 15 is the perspective view at another visual angle of structure shown in Figure 14；

Figure 16 is the enlarged drawing of the part-structure in Figure 13；

Figure 17 is the perspective view of the power tool of second embodiment

Figure 18 is the cross-sectional view of the power tool in Figure 17；

Figure 19 is the perspective view of the device housing and gearshift in Figure 18；

Figure 20 is the perspective view at another visual angle of structure shown in Figure 19；

Figure 21 is the cross-sectional view of structure shown in Figure 19；

Figure 22 is the explosive view of structure shown in Figure 19；

Figure 23 is the perspective view at another visual angle of structure shown in Figure 22；

Figure 24 is the perspective view of the gearshift in Figure 19；

Figure 25 is the perspective view of operating parts in Figure 24, the first shifting element and the second shifting element；

Figure 26 is the perspective view of the operating parts in Figure 25.

Specific embodiment

Fig. 1 and the power tool of first embodiment shown in Fig. 2 100 include: shell 11, prime mover 12, output 13, pass Dynamic device 20 and gearshift 30.For shell 11 for accommodating prime mover 12, output 13 and transmission device 20, shell 11 can be with Form the handle 111 for holding for user.For prime mover 12 for driving output 13, prime mover 12 can be motor, engine Deng in the present embodiment by taking motor as an example.Output 13 is used for output power, and output 13 is specifically as follows an output shaft. Transmission device 20 is arranged between prime mover 12 and output 13, for realizing power between prime mover 12 and output 13 Transmitting, transmission device 20 have the multiple drive states for exporting output 13 with different power.Gearshift 30 is used It is switched between different drive states in driving transmission device 20, gearshift 30 includes for being located at for user's operation Operating parts 31 on different gears.

In the present embodiment, the power tool 100 is specifically by taking electric drill as an example, if in fact the tool include can be in difference Drive state between the transmission device 20 that switches over and the utility model gearshift 30 for being included belong to this reality With novel protected range.

As shown in Figure 1 to 11, prime mover 12 includes or is fixedly connected with the drive shaft 121 for output power, drives Moving axis 121 can be axis rotation with a central axis 101 relative to shell 11, and drive shaft 121 is also formed with along 101 direction of central axis The sliding tooth 121a of extension.

Transmission device 20 includes: device housing 21, the first planetary gear train 22, the second planetary gear train 23 and third planet train 24, enabling to the tool of transmission device 20 by this three groups of planetary gear trains, there are four types of different drive states, so that output 13 are exported with different revolving speeds.

Device housing 21 forms accommodating chamber 211, the first planetary gear train 22, the second planetary gear train 23 around central axis 101 It is arranged in accommodating chamber 211 with third planet train 24.The power that first planetary gear train 22 is used to export drive shaft 121 introduces Transmission device 20, the second planetary gear train 23 are used for the power output of transmission device 20 to output 13, third planet train 24 It is arranged between the first planetary gear train 22 and the second planetary gear train 23.

First planetary gear train 22 includes: the first movable part 221, the first planetary wheel carrier 222 and the first planetary gear 223.First Movable part 221 is arranged around central axis 101, the first movable part 221 opposite dress on the circumferencial direction around central axis 101 It sets shell 21 to fix, the first movable part 221 is also constituting sliding with device housing 21 along the direction for being parallel to central axis 101 Connection.First planetary wheel carrier 222 is arranged in device housing 21, and the first planetary wheel carrier 222 can surround 101 turns of central axis Dynamic, in other words, the first planetary wheel carrier 222 is spindle rotationally arranged in device housing 21 and is formed by accommodating chamber 211.The first row The number of star-wheel 223 be it is multiple, be specifically as follows 3, three the first planetary gears 223 are around the setting of drive shaft 121.Three first Planetary gear 223 is rotatably installed by pin to the first planetary wheel carrier 222.The periphery of first planetary wheel carrier 222 is formed with first Engaging tooth 222a.First movable part 221, which is formed with, can cooperate with the first engaging tooth 222a to lock turning for the first planetary wheel carrier 222 The first dynamic locking teeth 221a.First planetary gear 223 includes: specifically the major planet wheel portion 223a and asteroid wheel being fixedly connected Portion 223b, wherein major planet wheel portion 223a is engaged with the sliding tooth 121a in drive shaft 121, asteroid wheel portion 223b and drive shaft Have certain gap so that cannot be intermeshed between both between 121.

Third planet train 24 includes: third movable part 241, the third line star-wheel 242 and third planet wheel carrier 243.Wherein, Third movable part 241 is specially the third ring gear that inner circumferential is formed with third internal tooth 241a, and third movable part 241 surrounds central axis Line 101 is arranged and centered on central axis 101, and 241 opposite sets shell 21 of third movable part can also be with central axis 101 Axis rotation, the periphery of third movable part 241 are also formed with third external tooth 241b, and the first movable part 221 is towards third movable part 241 Being also formed with can cooperate with third external tooth 241b to lock the second of the rotation of 241 opposite sets shell 21 of third movable part the locking Tooth 221b.The asteroid wheel portion 223b of first planetary gear 223 is also engaged with the third internal tooth 241a of third movable part 241 composition. The third line star-wheel 242 is engaged with the sliding tooth 121a composition in drive shaft 121.The number of the third line star-wheel 242 be it is multiple, specifically It can be 3,3 the third line star-wheels 242 are rotatably installed by pin to third planet wheel carrier 243, third planet wheel carrier 243 Periphery be also formed with third engaging tooth 243a.

Second planetary gear train 23 includes: the second sun gear 231, the second planetary gear 232, the second movable part 233 and the second row Star wheel frame 234.Second sun gear 231 is fixedly connected with the composition of third planet wheel carrier 243.The number of second planetary gear 232 is more It is a, it is specifically as follows 4,4 the second planetary gears 232 are rotatably installed by pin to the second planetary wheel carrier 234, the second row Star-wheel 232 is also engaged with the second sun gear 231 composition respectively.Second movable part 233 is specially that inner circumferential is formed with the second internal tooth The second ring gear of 233a, the second movable part 233 are spindle rotationally arranged in device housing 21 around central axis 101 and are formed by In accommodating chamber 211.The periphery of second movable part 233 is also formed with the second external tooth 233b.Second planetary wheel carrier 234 is for installing the Two planetary gears 232, the second planetary wheel carrier 234 is also constituted with output 13 and is rotated synchronously, to output power to output 13. Second movable part 233 can with central axis 101 be axis be spindle rotationally arranged in device housing 21, the second movable part 233 also with Device housing 21 constitutes edge and is parallel to being slidably connected for 101 direction of central axis.Transmission device 20 further includes a locking piece 25, Locking piece 25 is formed with the locking teeth 251 that the rotation of the second movable part 233 is locked when engaging with the second external tooth 233b.The third line Different axial positions is arranged in star wheel frame 243 and locking piece 25, when the second movable part 233 is along being parallel to 101 side of central axis To when being moved to the second internal tooth 233a and engaging with third engaging tooth 243a, the second movable part 233 is constituted with third planet wheel carrier 243 It rotates synchronously, and when the second movable part 233 is moved to the second external tooth 233b and locking teeth along 101 direction of central axis is parallel to When 251 engagement, locking piece 25 locks the rotation of the second movable part 233.

In this way, as shown in Fig. 3, Fig. 4 and Figure 11, when operating parts 31, which is user-operably, to be set positioned at 1 gear, the first movable part When the direction that 221 edges are parallel to central axis 101 slides into the first axial position, the first locking teeth 221a and the first engaging tooth 222a engages to the rotation of the first planetary wheel carrier 222 of locking, and the second movable part 233 slides into third axial position simultaneously, At this moment, the locking teeth 251 of locking piece 25 is engaged with the second external tooth 233b, thus the rotation of the second movable part 233 of locking.To this When, transmission device 20 has relatively large first transmission ratio, and at this moment output 13 will be with a first relatively low speed Degree is rotated, and in other words, transmission device 20 at this moment is in the first drive state, at this moment power tool 100 can export One higher torsion.

And as shown in Fig. 5, Fig. 6 and Figure 11, when operating parts 31, which is user-operably, to be set positioned at 2 gears, the first movable part 221 When sliding into second axial position along the direction for being parallel to central axis 101, the second locking teeth 221b is nibbled with third external tooth 241b It closes to lock the rotation of third movable part 241, and the second movable part 233 is maintained at third axial position simultaneously.Thus at this moment, Transmission device 20 has opposite second transmission ratio, and at this moment output 13 will be rotated with a second speed, in other words, At this moment transmission device 20 is in the second drive state, wherein the second transmission ratio of transmission device 20 substantially the first transmission ratio Half.

As shown in Fig. 7, Fig. 8 and Figure 11, when operating parts 31, which is user-operably, to be set positioned at 3 gears, the first movable part 221 is extensive It is multiple to the first axial position when, at this moment the rotation of the first planetary wheel carrier 222 is locked again, while the second movable part 233 is along flat Row is moved to the 4th axial position in the direction of central axis 101, and the second internal tooth 233a of the second movable part 233 is engaged with third Tooth 243a engagement rotates synchronously to constitute with third planet wheel carrier 243.To which at this moment, transmission device 20 is driven with third Than at this moment output 13 will be rotated with a third speed, and in other words, transmission device 20 at this moment is in third biography Dynamic state, wherein the third transmission ratio of transmission device 20 is less than the second transmission ratio.

As shown in Fig. 9, Figure 10 and Figure 11, when operating parts 31, which is user-operably, to be set positioned at 4 gears, the first movable part 221 It is moved again to second axial position and the second movable part 233 is maintained at the 4th axial position, 241 opposite sets of third movable part The rotation of shell 21 is locked again and the second movable part 233 is constituted with third planet wheel carrier 243 and rotated synchronously.Thus at this moment, Transmission device 20 has the 4th transmission ratio, and at this moment output 13 will be rotated with a fourth speed, in other words, at this moment Transmission device 20 be in the 4th drive state, wherein the 4th transmission ratio of transmission device 20 be third rotate ratio half, this When, power tool 100 can export a biggish revolving speed.

And in order to enable transmission device 20 can switch between different drive states, the needs of gearshift 30 make It obtains the first movable part 221 and the second movable part 233 to change along the position in the direction for being parallel to central axis 101, specifically For, gearshift 30 enables to the first movable part 221 to switch between the first axial position and second axial position And the second movable part 233 can also be made to switch between third axial position and the 4th axial position.

As shown in Figure 11 to Figure 16, gearshift 30 includes above mentioned operating parts 31, further includes: connector 32, the One shifting element 33 and the second shifting element 34.Wherein, operating parts 31 is used for for user's operation so that transmission device 20 is in Different drive states, 32 attended operation part 31 of connector and the second shifting element 34, the first shifting element 33 and the first activity Part 221 connects, and the second shifting element 34 is connect with the second movable part 233.

Specifically, the first shifting element 33 can be the rotation connection of axis with first axle 102 with the composition of device housing 21, The first axle 102 is mutually perpendicular to central axis 101.First shifting element 33 with first axle 102 be axis opposite sets Shell 21 is able to rotate when rotating to first position and the second position.First shifting element 33 specifically includes: the first shift portion 331, First rotating shaft portion 332 and first is driven portion 333.First shift portion 331 is connect with the first movable part 221, when the first shifting element 33 when turning to first position, and the first shift portion 331 can drive 221 opposite sets shell 21 of the first movable part along being parallel to center The direction of axis 101 is moved to the first axial position, and when the first shifting element 33 turns to the second position, the first shift portion 331 can drive 221 opposite sets shell 21 of the first movable part to be moved to the second axial position along the direction for being parallel to central axis 101 It sets.Specifically, the first movable part 221 is formed with first annular slot 221c, the first shift portion 331 is inserted into first annular slot In 221c.First rotating shaft portion 332 is the pivot point of axis rotation with first axle 102 as the first shifting element 33, and first is driven Portion 333 is connect with operating parts 31 and the driving by operating parts 31, and first is driven portion 333 and the setting of the first shift portion 331 the The two sides of one shaft 332, and first is driven portion 333 and the first shift portion 331 and is additionally arranged at the two sides of first axle 102, this Sample enables to the first shifting element 33 to rotate, so that first when first is driven driving of the portion 333 by operating parts 31 Shift portion 331 drives the first movable part 221 to switch between 103 position of the first axial position and second axis.

Likewise, the second shifting element 34 can be the rotation connection of axis with second axis 103 with the composition of device housing 21, it should Second axis 103 is mutually perpendicular to central axis 101, and second axis 103 is parallel to each other with first axle 102.Second shift member Part 34 is being that axis opposite sets shell 21 is able to rotate when rotating to the third place and the 4th position with second axis 103.Second changes Gear element 34 specifically includes: the second shift portion 341, the second shaft 342 and second are driven portion 343.Second shift portion 341 and The connection of two movable parts 233, when the second shifting element 34 turns to the third place, the second shift portion 341 can drive the second activity 233 opposite sets shell 21 of part is moved to third axial position along the direction for being parallel to central axis 101, and when the second shift member When part 34 turns to four positions, the second shift portion 341 can drive 233 opposite sets shell 21 of the second movable part in being parallel to The direction of mandrel line 101 is moved to the 4th axial position.Specifically, the second movable part 233 is formed with the second annular groove 233c, Second shift portion 341 is inserted into the second annular groove 233c.Second shaft 342 is as the second shifting element 34 with second axis 103 for axis rotation pivot points, second is driven portion 343 connect and the driving by connector 32 with connector 32, and second is driven The two sides of the second shaft 342 are arranged in portion 343 and the second shift portion 341, and second is driven portion 343 and the second shift portion 341 The two sides of second axis 103 are additionally arranged at, in this way, enabling to when second is driven driving of the portion 343 by connector 32 Two shifting elements 34 rotation, so that the second shift portion 341 drives the second movable part 233 in third axial position and the 4th axis Switch between position.

Device housing 21 is also formed with the first arcuate socket 212 and the second arcuate socket 213.First shifting element 33 passes through first Arcuate socket 212, the first arcuate socket 212 is for being oriented to rotation of first shifting element 33 with first axle 102 for axis, the first shift Portion 331 is located in device housing 21.Second shifting element 34 passes through the second arcuate socket 213, and the second arcuate socket 213 is for being oriented to the Two shifting elements 34 are the rotation of axis with second axis 103, and the second shift portion 341 is located in device housing 21.

Operating parts 31 exposes shell 11 at least partly for user's operation.Operating parts 31 and shell 11 are constituted can be straight along first The sliding of 104 direction of line is slidably connected, and operating parts 31 can be also the rotation connection of axis with central axis 101 with the composition of shell 11.

Operating parts 31 is formed with the first driving portion 311 connecting with the first shifting element 33.When operating parts 31 is with respect to shell 11 along 104 direction of first straight line slide when, the first driving portion 311 drive the first shifting element 33 with first axle 102 be axis turn It moves to first position or the second position, and when it is that axis rotates with central axis 101 that operating parts 31 is relative to shell 11, first Driving portion 311 can also allow the position of the first shifting element 33 to be kept fixed.Specifically, the first driving portion 311 is arc Slot, the arc groove extend along the circumferencial direction around central axis 101, and the first of the first shifting element 33 is driven the insertion of portion 333 To arc groove.In this way when operating parts 31 slides, arc groove is driven portion 333 with first and contacts and drive first to be driven portion 333 Along 104 direction of first straight line position change, thus driving the first shifting element 33 with first axle 102 be axis turn It is dynamic.And when operating parts 31 rotates, first, which is driven portion 333, to relatively rotate with arc groove, that is to say the first shift member Part 33 can allow arc groove to be driven the rotation of portion 333 relative to first in the case where guarded by location is fixed.

Operating parts 31 is also formed with the second driving portion 312, and the second driving portion 312 is connect with connector 32.When operating parts 31 When being rotated relative to shell 11 with central axis 101 for axis, 312 drive connection part 32 of the second driving portion turns with operating parts 31 is synchronous It is dynamic, while when operating parts 31 is slided with respect to shell 11 along 104 direction of first straight line, the second driving portion 312 can also allow to connect The position of fitting 32 is kept fixed.Specifically, the second driving portion 312 is that edge is parallel to the convex of 104 direction of first straight line extension 312a is played, interconnecting piece is formed with the groove 321 that protrusion 312a can be made to be embedded in, and also edge is parallel to first straight line 104 to groove 321 Direction extends.In this way, when operating parts 31 rotate when, driving can drive connection part 32 with operating parts 31 rotate synchronously, and when behaviour When workpiece 31 is slided, operating parts 31 can be slided with opposite joints 32 along 104 direction of first straight line.It will be understood, In other embodiments, the second driving portion 312 or the groove that extends along 104 direction of first straight line, and interconnecting piece formed it is embedding Enter the protrusion in groove.

Connector 32 is also connected with the second shifting element 34, when connector 32 is rotated synchronously with operating parts 31, connector 32 The second shifting element 34 can be driven to switch between the third place and the 4th position, and the first shifting element 33 at this time Position is kept fixed.Connector 32 is formed with third driving portion 322, and third driving portion 322 is used to drive when connector 32 rotates Dynamic second shifting element 34 is that axis turns to the third place or the 4th position with second axis 103.Specifically, third drives Portion 322 includes inclined-plane 322a, and inclined-plane 322a extends along the plane intersected is tilted with central axis 101, flat where inclined-plane 322a Face is also intersected with the inclination of second axis 103, and the second of the second shifting element 34 is driven portion 343 and contacts with inclined-plane 322a.In this way, working as When connector 32 rotates, inclined-plane 322a can drive the second position for being driven portion 343 to change, thus driving the second shift member Part 34 is axis rotation with second axis 103.Third driving portion 322 further include: first, which faces 322b and second directly, faces 322c, inclined-plane directly The both ends of 322a, which are separately connected first, to be faced 322b and second directly and faces 322c directly.It is faced directly in this way, working as second and being driven portion 343 with first 322b contact when, the second shifting element 34 is in third axial position, at this moment user stir operating parts 31 make connector 32 with Operating parts 31 is together axis rotation with central axis 101, and then connector 32, which turns to inclined-plane 322a and is driven portion 343 with second, connects Driving second is driven portion 343 and become in the position on the direction for being parallel to central axis 101 by the position of touching, connector 32 Change, thus the second shifting element 34 with second axis 103 be axis rotate, finally, connector 32 turn to second face directly 322c and Second is driven the position of the contact of portion 343, and at this moment the second shifting element 34 also turns to the 4th axial position.

As shown in Figure 12, Figure 13 and Figure 16, power tool 100 further includes limit assembly 14, and limit assembly 14 is for grasping The rotation of limitation operating parts 31 and the limitation operation when operating parts 31 is rotated relative to shell 11 when workpiece 31 is slided relative to shell 11 The sliding of part 31.Limit assembly 14 includes: the rotation for limiting operating parts 31 when operating parts 31 is slided along first straight line 104 The first position limiting structure and for operating parts 31 with central axis 101 be axis rotate when limitation operating parts 31 slide second limit Bit architecture, the first position limiting structure specifically include: the first confined planes 141a and the second confined planes 141b, and the second position limiting structure includes the Three confined planes 141c and the 4th confined planes 141d.Specifically, limit assembly 14 includes the first limit formed in device housing 21 The second retention bead 142 position raised 141 and cooperated with the first retention bead 141.First retention bead 141 is substantially rectangular, Wherein one group of opposite side of rectangle forms the first confined planes 141a and the second confined planes 141b, and another group of opposite side of rectangle forms Third confined planes 141c and the 4th confined planes 141d, the first confined planes 141a and the second confined planes 141b with first straight line 104 Direction is parallel, and third confined planes 141c and the 4th confined planes 141d are vertical with 101 direction of central axis.Second retention bead 142 are formed on operating parts 31, and the second retention bead 142 is generally cylindrical body, and the outer wall of cylindrical body can be with the first confined planes 141a, the second confined planes 141b, third confined planes 141c, the 4th confined planes 141d contact.To when operating parts 31 is straight with first When line 104 slides, the first confined planes 141a or the second confined planes 141b can be contacted with the second retention bead 142 to limit behaviour The rotation of workpiece 31, and when operating parts 31 is that axis rotates with central axis 101, third confined planes 141c or the 4th confined planes 141d can be contacted with the second retention bead 142 to limit the sliding of operating parts 31.

Power tool 100 further comprises: for transmission device 20 to be maintained to the holding component of each drive state 15.Keeping component 15 includes: spring 151 and holder 152, and the hole 313 for accommodating spring 151 is provided on operating parts 31, The both ends of spring 151 support operating parts 31 and holder 152 respectively.Holder 152 is specifically as follows copper cap, in device housing 21 It is formed there are four slot 214,151 bias copper cap portion of spring is embedded in slot 214.In this way, when operating parts 31 is moved with respect to shell 11 When moving to different gears, copper cap can be moved in corresponding slot 214, so that transmission device 20 is maintained at phase The drive state answered.Copper cap is when being moved to the edge of slot 214 simultaneously, spring 151 can be biased copper cap it is unexpected be embedded in slot 214 It is interior, and copper cap can also issue kaka sound, to improve the use feel of user.In addition the setting of 151 bias of spring is operating Between part 31 and device housing 21, additionally it is possible to certain damping effect is played, so as to avoid power tool 100 after actuation Because of vibration the position of 31 opposite sets shell 21 of operating parts is changed.

In the present embodiment, transmission device 20 is enabled to be in four different transmissions by the switching of gearshift 30 State.

The power tool 200 of second embodiment shown in Figure 17 includes the shell essentially identical with the structure in first embodiment Body 51, prime mover 52 and output 53, further include the transmission device 60 that internal structure is identical with the first embodiment, in the present embodiment Transmission device 60 device housing 61 and first embodiment in device housing 61 slightly distinguish, the power tool of the present embodiment 200 similarly include gearshift 70 for making transmission device 60 be in four different drive states, in the present embodiment Transmission device 60 device housing 61 and gearshift 70 structure be adapted.It should be noted that in first embodiment The part that power tool 100 and the present embodiment are adapted can be applied in the present embodiment, specifically repeat no more.

As shown in Figure 17 to Figure 26, in the present embodiment, device housing 61 is similarly arranged around central axis 201.It changes Blocking means 70 specifically include: operating parts 71, the first shifting element 72 and the second shifting element 73, wherein operating parts 71 is for supplying User's operation, operating parts 71 form or are fixedly connected with the first driving structure 711 that the first shifting element 72 can be driven to rotate With the second driving structure 712 that the second shifting element 73 can be driven to rotate.

First shifting element 72 can be the rotation connection of axis, the second shift with first axle 202 with the composition of device housing 61 Element 73 and the composition of device housing 61 can be the rotation connection of axis, first axle 202 and second axis 203 with second axis 203 It is parallel to each other, first axle 202 and second axis 203 are mutually perpendicular to central axis 201.First shifting element 72 specifically wraps Include: the first shift portion 721, first rotating shaft portion 722 and first are driven portion 723, and the first shift portion 721 and first are driven portion 723 and divide The two sides in first rotating shaft portion 722 are not set.First shift portion 721 is connected to the first movable part 621 to drive the first movable part 621 are moved to the first axial position and second axial position along 201 direction of central axis, and first rotating shaft portion 722 is changed as first Keep off element 72 with first axle 202 be axis rotation pivot point, first be driven portion 723 for and the first driving structure 711 constitute Cooperation.Second shifting element 73 specifically includes: the second shift portion 731, the second shaft 732 and second are driven portion 733, and second changes Stopper 731 and second is driven the two sides that portion 733 is separately positioned on the second shaft 732.It is living that second shift portion 731 is connected to second Moving part 633 is moved to third axial position and the 4th axial position along 201 direction of central axis with the second movable part 633 of driving, Second shaft 732 is the pivot point of axis rotation with second axis 203 as the second shifting element 73, and second is driven the use of portion 733 Cooperate in being constituted with the second driving structure 712.

Device housing 61 is also formed with the first arcuate socket 612 and the second arcuate socket 613, and the first arcuate socket 612 is along around the The circumferencial direction of one axis 202 extends, and the second arcuate socket 613 extends along the circumferencial direction around second axis 203.First shift Element 72 passes through the first arcuate socket 612, and the second shifting element 73 passes through the second arcuate socket 613, so that the first arcuate socket 612 can Be oriented to the first shifting element 72 with first axle 202 for axis rotation, the second arcuate socket 613 can be oriented to the second shifting element 73 with Second axis 203 is axis rotation.

Specifically, the first driving structure 711 specifically includes: the first driving inclined-plane 711a and first faces 711b directly, wherein Plane where first driving inclined-plane 711a intersects with the inclination of first axle 202, and the plane where the first driving inclined-plane 711a Also intersect with the inclination of central axis 201.In this way, the first driving inclined-plane 711a can drive first to change when operating parts 71 rotates Gear element 72 turns to first position and the second position.Likewise, the second driving structure 712 includes: the second driving inclined-plane 712a 712b is faced directly with second, wherein the plane where the second driving inclined-plane 712a intersects with the inclination of second axis 203, and second drives Plane where dynamic inclined-plane 712a also intersects with the inclination of central axis 201.In this way, the second driving is oblique when operating parts 71 rotates Face 712a can drive the second shifting element 73 to turn to the third place and the 4th position.

In order to enable the first shifting element 72 is remained includes with the contact of the first driving structure 711, gearshift 70 First biased element 74, the first biased element 74 generate first shifting element of bias 72 and contact with the first driving structure 711 Biasing force.Specifically, being formed with first sliding groove 614 in device housing 61, it is provided in first sliding groove 614 and the first shift The first of element 72 is driven the first sliding block 615 of the contact of portion 723, and the first sliding block 615 is slidably disposed in first sliding groove 614 It is interior, 74 the first sliding block of bias 615 of the first biased element make the first sliding block 615 support first be driven portion 723 and make first by Drive portion 723 remains the contact for facing 711b directly with the first driving inclined-plane 711a or first.

Likewise, gearshift 70 includes the second biased element 75, the second biased element 75 generates a bias second and changes The biasing force that gear element 73 is contacted with the second driving structure 712.Specifically, second sliding slot 616 is formed in device housing 61, It is provided in second sliding slot 616 and is driven the second sliding block 617 that portion 733 contacts, the second sliding block with the second of the second shifting element 73 617 are slidably disposed in second sliding slot 616, and 75 the second sliding block of bias 617 of the second biased element makes the second sliding block 617 Support second, which is driven portion 733 and makes second to be driven portion 733 and remain, faces 712b directly with the second driving inclined-plane 712a or second Contact.

Specifically, the first driving structure 711, which includes three first driving inclined-plane 711a and four first, faces 711b directly, such as Shown in Figure 26, they are successively spaced setting.Second driving structure 712 includes that a second driving inclined-plane 712a and two second are straight Face 712b, as shown in figure 26, the both ends of the second driving inclined-plane 712a are separately connected the two and second face 712b directly.In this way, passing through The corresponding relationship that the first driving structure 711 and the second driving structure 712 is arranged can make in operating parts 71 with respect to 51 turns of shell Transmission device 60 is enabled to be in four different drive states when dynamic.

In the present embodiment, operating parts 71 includes: operation portion 713 and driving portion 714, and operation portion 713 and driving portion 714 are Two parts, the two parts are fixed together, in such manner, it is possible to improve the stability of operation.As long as in fact, operation portion 713 and driving portion 714 constitute rotate synchronously be able to achieve the technical solution of the utility model.In addition, in other embodiments, behaviour Making portion 713 and driving portion 714 can also be integrally formed.

Operating parts 71 is also formed with four grooves 715, and difference can be in transmission device 60 by being connected in device housing 61 Drive state when be embedded in elastic slice 618 in different grooves 715, enable to change by the effect of groove 715 and elastic slice 618 Blocking means 70 issue kaka sound, to improve the use feel of user.In addition elastic slice 618 can also play certain vibration damping and make With so as to avoid power tool 200 from making the position of 71 opposite sets shell 61 of operating parts because of vibration after actuation It changes.

The basic principles and main features and advantage of the utility model have been shown and described above.The technical staff of the industry It should be appreciated that above-described embodiment does not limit the utility model in any form, it is all by the way of equivalent substitution or equivalent transformation Technical solution obtained, all falls in the protection scope of the utility model.

Claims (10)

1. a kind of power tool, comprising:

Output shaft is used for output power；

Prime mover, including it is connected with drive shaft；

Shell, for accommodating described prime mover；

Transmission device, for realizing the transmitting of power between the output shaft and the drive shaft, the transmission device has So that four drive states that the output shaft is exported with different revolving speeds；

Gearshift, for driving the transmission device to switch between different drive states；

The transmission device includes:

First movable part is arranged around a central axis；

Second movable part is coaxially disposed with first movable part；

Device housing is formed with the accommodating chamber for accommodating first movable part and second movable part；

First movable part constitutes being slidably connected along the direction for being parallel to the central axis with described device shell, described Second movable part constitutes being slidably connected along the direction for being parallel to the central axis with described device shell；

It is characterized by:

The gearshift includes:

First shifting element is constituted with described device shell using first axle as the rotation connection of axis, first shifting element It further include connecting first movable part and when first shifting element is rotated using the first axle as axis described in driving First shift portion of the first movable part sliding；

Second shifting element is constituted with described device shell using second axis as the rotation connection of axis, second shifting element It further include connecting second movable part and when second shifting element is rotated using the second axis as axis described in driving Second shift portion of the second movable part sliding；

Operating parts, including for the operation portion for user's operation；

The operating parts and the shell are constituted using the central axis as the rotation connection of axis；

The operating parts is also formed or is connected with:

First driving structure, including contacted with first shifting element and drive described first to change in operating parts rotation The first driving inclined-plane that gear element is rotated using the first axle as axis；

Second driving structure, including contacted with second shifting element and drive described second to change in operating parts rotation The second driving inclined-plane that gear element is rotated using the second axis as axis；

Wherein, the plane where first driving inclined-plane intersects with first axle inclination, the second driving inclined-plane institute The inclination of plane and the second axis intersect.

2. power tool according to claim 1, it is characterised in that:

The gearshift further include:

First biased element generates a bias for being kept in contact first shifting element and first driving structure Power；

Second biased element generates a bias for being kept in contact second shifting element and second driving structure Power.

3. power tool according to claim 1, it is characterised in that:

First shifting element includes:

First is driven portion, contacts with first driving structure；

First rotating shaft portion is the pivot point that first shifting element and described device shell constitute rotation connection；

Second shifting element includes:

Second is driven portion, contacts with second driving structure；

Second shaft is the pivot point that second shifting element and described device shell constitute rotation connection；

Wherein, described first be driven portion and first shift portion is arranged in the two sides in the first rotating shaft portion, described second by The two sides of second shaft are arranged in drive portion and second shift portion.

4. power tool according to claim 1, it is characterised in that:

First driving structure includes two first driving inclined-planes, and first driving structure further includes two institutes of connection State the first driving inclined-plane first is faced directly；

Second driving structure includes two second driving inclined-planes, and second driving structure further includes two institutes of connection State the second driving inclined-plane second is faced directly；

Wherein, the plane where first driving inclined-plane intersects with first axle inclination, and described first faces place directly Plane is parallel with the first axle；Plane where second driving inclined-plane intersects with second axis inclination, described Second face directly where plane it is parallel with the second axis.

5. power tool according to claim 1, it is characterised in that:

The second axis that the first axle of the first shifting element rotation is rotated with second shifting element is parallel to each other.

6. power tool according to claim 1, it is characterised in that:

The first axle of the first shifting element rotation is mutually perpendicular to the central axis；The second shifting element rotation Second axis be mutually perpendicular to the central axis.

7. power tool according to claim 1, it is characterised in that:

The transmission device is also formed with to be surrounded along the first arcuate socket of the circumferencial direction extension around the first axle and edge The circumferencial direction of the second axis extends the second arcuate socket, and first shifting element passes through first arcuate socket, described Second shifting element passes through second arcuate socket.

8. power tool according to claim 1, it is characterised in that:

First movable part is formed with first annular slot, and first shift portion is inserted into the first annular slot；Described second Movable part is formed with the second annular groove, and second shift portion is inserted into second annular groove.

9. power tool according to claim 1, it is characterised in that:

The operating parts is also formed with multiple grooves, and described device shell, which is connected with, is in different transmissions in the transmission device The elastic slice being inserted into when state in the different grooves.

10. power tool according to claim 1, it is characterised in that:

The power tool includes: the collet for connecting drill bit；The collet is connected to the output shaft.