CN207961473U - Electric tool - Google Patents
Electric tool Download PDFInfo
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- CN207961473U CN207961473U CN201721868425.XU CN201721868425U CN207961473U CN 207961473 U CN207961473 U CN 207961473U CN 201721868425 U CN201721868425 U CN 201721868425U CN 207961473 U CN207961473 U CN 207961473U
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Abstract
The utility model discloses a kind of electric tools, including：Casing；Driver, driver have drive shaft；Output shaft, output shaft are installed on by least two bearings in casing；Transmission component, transmission component has transmission input stage and transmission output stage, it is driven input stage and driving axis connection, transmission output stage is connected with exporting axis, wherein, it includes being set in the planet carrier and output stage planetary gear of output shaft to be driven output stage, and one at least two bearings in neighbouring output stage planetary gear is coated at planet carrier, and distance d is 0mm 10mm between at least two bearing opposite sides being adjacently positioned.According to the electric tool of the utility model embodiment, by the way that planet carrier and one at least two bearings to be set with, length of two components in the axial direction of casing can be merged into the thickness of a component, be conducive to the axial length for shortening electric tool.
Description
Technical field
The utility model is related to electric device technical fields, relate more specifically to a kind of electric tool of such as electric drill.
Background technology
The axial length of electric tool in the related technology is too long, involves great expense, and occupied space is big, is not easy to store, and
And user's inconvenient gripping when in use, poor user experience.
Utility model content
The utility model aims to solve at least one of the technical problems existing in the prior art.For this purpose, the utility model carries
Go out a kind of electric tool, the axial length of the electric tool is shorter, and experience sense is good.
According to the electric tool of the utility model first aspect embodiment, including：Casing；Driver, the driver are set
In in the casing and with drive shaft；Output shaft, the output shaft be installed in the casing by least two bearings and
It is arranged with the drive shaft interval；Transmission component, the transmission component are set in the casing and with transmission input stage and biography
Dynamic output stage, the transmission input stage and the driving axis connection, the transmission output stage are connected to the output shaft, wherein
The transmission output stage includes the planet carrier for being set in the output shaft and the output stage planetary gear for being installed on the planet carrier,
One at least two bearing in the neighbouring output stage planetary gear is coated at the planet carrier, and at least two phases
Distance d is 0mm-10mm between the bearing opposite side of neighbour's arrangement.
According to the electric tool of the utility model embodiment, using at least two spacing are smaller or the bearing pair of zero spacing
Output shaft is supported, and can shorten the axial length of electric tool, by by one in planet carrier and at least two bearings
It is set with, output shaft can be not only supported, length of two components in the axial direction of casing can also be merged into
The thickness of one component is conducive to the axial length for further shortening electric tool.
One embodiment according to the present utility model, the bearing are rolling bearing, the bearing inner race of the bearing and institute
State output shaft, the planet carrier rotates synchronously.
One embodiment according to the present utility model, the middle part of the planet carrier has to be led to suitable for what the output shaft was worn
The cross sectional shape in hole, the through-hole is non-circular.
One embodiment according to the present utility model, the planet carrier is axially extending along the output shaft, and the row
The thickness of carrier axially and the width for the bearing for being coated at the planet carrier are roughly equal.
Optionally, the planet carrier is integrally formed part.
Optionally, the planet carrier includes：Switching part, the switching part are set in the output shaft, and the switching part
Internal perisporium be connected to the output shaft, the periphery wall of the switching part is connect with the bearing；Body part, the body part peace
Loaded on the switching part, the output stage planetary gear is connect with the body part.
In some instances, the middle part of the body part has location hole, the direction output stage row of the switching part
The side of star gear has the positioning section for being suitable for being threaded through in the location hole, and has between the body part and the bearing
Gap.
In some instances, the planetary side of the direction of the switching part output stage has multiple along its circumferential direction
Spaced positioning protrusion, the body part have multiple escape groove for avoiding the positioning protrusion.
One embodiment according to the present utility model, is additionally provided in the casing and the output stage Planetary Gear Transmission connects
The bearing, the other side of the output stage ring gear are only supported in the side of the output stage ring gear connect, the output stage ring gear
Equipped with locating plate, for carrying out axially position to the output stage ring gear.
According to the utility model further embodiment, the transmission output stage further includes：Output stage sun gear, it is described
Output stage sun gear is connect between the drive shaft and the output shaft and with the output stage Planetary Gear Transmission.
Optionally, the transmission series of the transmission component be greater than or equal to 2, and each gear stage include sun gear and with
Its planetary gear being sequentially connected, the output stage sun gear are connect with the planetary gear of a upper gear stage, the transmission group
Part further includes shift ring gear, the shift ring gear be movably disposed in the casing it is interior with the output stage sun gear
With planetary at least one engagement of a upper gear stage.
Optionally, the casing is externally provided with shift switch, and the shift switch drives the shift by connector of shifting gears
Ring gear moves.
Optionally, the shift connector formed one end connect with the shift ring gear, the other end be directed away from it is described
The L-shaped steel wire of the side bending of output shaft.
According to the electric tool of the utility model second aspect embodiment, including：First shell；Driver, the driving
Device is set in the first shell and has drive shaft；Transmission device, the transmission device include second shell and are set to described
At least part of transmission component in second shell, the second shell stretches into the first shell, the transmission component
With transmission input stage and transmission output stage, the transmission input stage and the driving axis connection；Output shaft, the output shaft
At least part is installed in the second shell by two bearings and is connect with the transmission output stage, wherein the biography
Dynamic output stage includes the planet carrier for being set in the output shaft and the output stage planetary gear for being installed on the planet carrier, and described two
A bearing outside in a bearing in the neighbouring output stage planetary gear is in the planet carrier, and the phase of two bearings
Distance d is 0mm-10mm between side.
According to the electric tool of the utility model embodiment, using two spacing are smaller or the bearing of zero spacing is to output
Axis is supported, and can shorten the axial length of electric tool, by the way that planet carrier and one in two bearings are set with,
Output shaft can be not only supported, length of two components in the axial direction of casing can also be merged into component
Thickness is conducive to the axial length for further shortening electric tool.
One embodiment according to the present utility model, the transmission output stage further include：Output stage sun gear, it is described defeated
Go out grade sun gear between the drive shaft and the output shaft and is connect with the output stage Planetary Gear Transmission；Output
Grade ring gear, the output stage ring gear are installed in the second shell and are connect with the output stage Planetary Gear Transmission.
One embodiment according to the present utility model is set between the output stage sun gear and the output stage ring gear
There is locating plate to carry out axially position to the output stage sun gear and the output stage ring gear respectively.
According to the utility model further embodiment, the transmission component further includes：Intergrade sun gear, in described
Intercaste sun gear is connect with the transmission input stage；Intergrade planetary gear, the intergrade planetary gear and the centre
Grade sun gear is sequentially connected, and the intergrade planetary gear is connect with the output stage sun gear.
Optionally, it is equipped with moveable shift ring gear in the second shell, is used for and the output stage sun gear
With the planetary at least one engagement of the intergrade.
Optionally, the first shell is externally provided with moveable shift switch, and the shift switch passes through connector of shifting gears
The shift ring gear is driven to move.
Optionally, the second shell, which has, is suitable for the jack that the shift connector passes through, the shift connector shape
It is connect with the shift ring gear at one end, the other end is directed away from the L-shaped steel wire that the side of the output shaft is bent.
The additional aspect and advantage of the utility model will be set forth in part in the description, partly will be from following description
In become apparent, or recognized by the practice of the utility model.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination following accompanying drawings to embodiment
Become apparent and is readily appreciated that, wherein：
Fig. 1 is the structural schematic diagram according to the electric tool of the utility model one embodiment；
Fig. 2 is the sectional view of the line A-A along Fig. 1；
Fig. 3 is the structural schematic diagram according to the electric tool of the utility model another embodiment；
Fig. 4 is the partial structural diagram according to the electric tool of the utility model one embodiment；
Fig. 5 is the sectional view of the line B-B along Fig. 4；
Fig. 6 is the partial structural diagram according to the electric tool of the utility model another embodiment；
Fig. 7 is the sectional view of the line C-C along Fig. 6；
Fig. 8 is the partial structural diagram according to the electric tool of the utility model another embodiment.
Reference numeral：
Electric tool 100,
Casing 10, first shell 11, second shell 12, jack 121,
Driver 20, drive shaft 21,
Output shaft 30, input terminal 31, output end 32,
Bearing 40,
Transmission component 50,
Transmission input stage 51, input stage sun gear 511, input stage planetary gear 512, input stage ring gear 513,
It is driven output stage 52, planet carrier 521, through-hole 5210, switching part 5211, positioning section 52111, positioning protrusion
52112, body part 5212, location hole 52121, escape groove 52122, output stage planetary gear 522, output stage sun gear 523,
Output stage ring gear 524,
Intergrade sun gear 531, intergrade planetary gear 532, ring gear 533 of shifting gears,
Locating plate 54, terminal pad 55,
Shift switch 61, connector 62 of shifting gears, bracing ring 63,
Nose assembly 70.
Specific implementation mode
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term "center", " length ", " width ", " thickness ",
The fingers such as "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom" "inner", "outside", " axial direction ", " radial direction ", " circumferential direction "
The orientation or positional relationship shown be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the utility model and
Simplify description, does not indicate or imply the indicated device or element must have a particular orientation, with specific azimuth configuration
And operation, therefore should not be understood as limiting the present invention.In addition, define " first ", the feature of " second " can be bright
Show or implicitly include one or more this feature.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition
The concrete meaning of language in the present invention.
Below with reference to Fig. 1-Fig. 8 descriptions according to the electric tool 100 of the utility model embodiment.Here electric tool
100 can be electric drill etc..
As Figure 1-Figure 8, include according to the electric tool 100 of the utility model one embodiment：Casing 10, driver
20, output shaft 30 and transmission component 50.
Driver 20 is set in casing 10 and has drive shaft 21.Output shaft 30 is installed on machine by least two bearings 40
In shell 10, to ensure the running accuracy and structural strength of output shaft 30, and output shaft 30 is arranged with the interval of drive shaft 21.It passes
Dynamic component 50 is set in casing 10 and has transmission input stage 51 and transmission output stage 52, transmission input stage 51 and drive shaft 21 to connect
It connects, transmission output stage 52 is connect with output shaft 30, to which power is transferred to output shaft 30 from drive shaft 21.
Wherein, transmission output stage 52 includes planet carrier 521 and output stage planetary gear 522, and planet carrier 521 is set in output
Axis 30, output stage planetary gear 522 are installed on planet carrier 521, at least two bearings 40 in neighbouring output stage planetary gear 522
One (as shown in Figure 2 the bearing 40 positioned at rear side) be coated at planet carrier 521, and at least two bearings 40 being adjacently positioned
Opposite side between distance d be 0mm-10mm.For example, the distance between the axial end being oppositely arranged of two neighboring bearing 40
Can be 0mm, 2.5mm, 5mm or 10mm.
According to the electric tool 100 of the utility model embodiment, using at least two spacing are smaller or the axis of zero spacing
It holds 40 pairs of output shafts 30 to be supported, the axial length of electric tool 100 can be shortened, by by planet carrier 521 and at least two
One in a bearing 40 is set with, and can be not only supported to output shaft 30, can also be by two components in electronic work
Length in the axial direction of tool 100 merges into the thickness of a component, and the axial direction for being conducive to further shorten electric tool 100 is long
Degree.
One embodiment according to the present utility model, bearing 40 are rolling bearing, the bearing inner race and output shaft of bearing 40
30, planet carrier 521 rotates synchronously.
Specifically, each bearing 40 has bearing outer ring, bearing inner race and is located between bearing outer ring and bearing inner race
Multiple rolling elements, bearing outer ring are fixedly connected with the internal face of casing 10, i.e., bearing outer ring is stationary relative to casing 10, axis
Inner ring housing is held on planet carrier 521 and is closely connect with the periphery wall of planet carrier 521, the internal perisporium of planet carrier 521 and output
The input terminal 31 of axis 30 closely connects.The output end 32 of output shaft 30 is suitable for connecting with nose assembly 70.When driver 20 works,
Planet carrier 521 is rotated synchronously with bearing inner race and output shaft 30, to pass the power of drive shaft 21 by transmission component 50
Transport to output shaft 30.
As shown in Figure 4-Figure 7, one embodiment according to the present utility model, the middle part of planet carrier 521, which has, is suitable for output
The cross sectional shape of the through-hole 5210 that axis 30 is worn, through-hole 5210 is non-circular.Accordingly, the cross of the input terminal 31 of output shaft 30
Section is identical as the cross sectional shape of through-hole 5210, so as to the leading in planet carrier 521 by the cooperation of the input terminal 31 of output shaft 30
It in hole 5210, and can also realize being located by connecting for output shaft 30 and planet carrier 521, prevent circumferential vibration.
In some instances, through-hole 5210 can be waist-shaped hole, can make the 31 periphery wall surface of input terminal of output shaft 30 with
The internal face of through-hole 5210 is fitted close, and so that output shaft 30 is rotated synchronously with planet carrier 521, to transmit outputting torsion.
In some instances, planet carrier 521 is along the axially extending of output shaft 30, and the thickness of planet carrier 521 axially
It is roughly equal with the width for the bearing 40 for being coated at planet carrier 521.Thus, it is possible to which planet carrier 521 is entirely disposed in bearing inner race
In intermediate region, the length after making planet carrier 521 be combined with bearing 40 is shortened to half, has substantially shortened electric tool 100
Axial length, be advantageously implemented the miniaturization of electric tool 100, convenient for storage.
As shown in Figure 4 and Figure 5, in some optional embodiments, planet carrier 521 is integrally formed part.Specifically, planet carrier
521 form along the axially extending cylindric of bearing 40, and planet carrier 521 is coated at the input terminal 31 of output shaft 30, output stage row
Star gear 522 is installed on the rear side surface of planet carrier 521.
In some instances, output stage planetary gear 522 includes multiple circumferentially distributed planet teeth along planet carrier 521
Wheel, each planetary gear can be connect by connecting shaft with planet carrier 521, and each planet carrier 521 can be relative to planet carrier
521 rotations, by the way that the part that is integrally formed is arranged in planet carrier 521, processing, manufacture are easier, and advantageously reduce production cost, and
And convenient for being assembled with other component, to improve the production efficiency of electric tool 100.
As shown in Figure 6 and Figure 7, in other optional embodiments, planet carrier 521 includes：Switching part 5211 and body part
5212.Switching part 5211 is set in output shaft 30, and the internal perisporium of switching part 5211 is connect with output shaft 30, switching part 5211
Periphery wall is connect with bearing 40.Body part 5212 is installed on switching part 5211, and output stage planetary gear 522 connects with body part 5212
It connects.
Further, the middle part of switching part 5211 has along its axially extending through-hole 5210, in order to output shaft 30
Input terminal 31 is installed in the through-hole 5210 of switching part 5211.
In some instances, switching part 5211 is fixedly connected and rotates synchronously with body part 5212, output stage planetary gear
522 include multiple circumferentially distributed planetary gears along body part 5212, and each planetary gear can pass through connecting shaft and planet
The body part 5212 of frame 521 connects, and by combining to form planet carrier 521 switching part 5211 with body part 5212, may be used
Different materials are processed the different piece of planet carrier 521, allow that planet carrier 521 takes into account performance requirement and production cost is wanted
It asks, to reduce production cost while meeting performance requirement, is conducive to the cost performance for promoting planet carrier 521.
In some instances, the middle part of body part 5212 has a location hole 52121, switching part 5211 towards output stage row
The side of star gear 522 has the positioning section 52111 for being suitable for being threaded through in location hole 52121, to by switching part 5211 and originally
Body portion 5212 is combined, and body part 5212 and output shaft 30, without direct connection relational, assembling is simple, and body part 5212
There is gap between bearing 40, assembling process is made to be easier to realize, to be conducive to improve the assembling effect of electric tool 100
Rate can also avoid wearing between body part 5212 and bearing 40.
In some instances, the side towards output stage planetary gear 522 of switching part 5211 has multiple along its circumferential direction
Spaced positioning protrusion 52112, body part 5212 have multiple escape groove for avoiding positioning protrusion 52112
52122, body part 5212 have it is multiple along its circumferentially spaced escape groove 52122, pass through the escape groove of corresponding position
52122 are coordinated with positioning protrusion 52112, and location and installation may be implemented, to further increase the group of electric tool 100
Fill efficiency and connection reliability.
Another embodiment according to the present utility model is additionally provided with output stage ring gear 524, output stage internal tooth in casing 10
Circle 524 forms the annular of the circumferentially extending along casing 10, and the periphery wall of output stage ring gear 524 is connect with the inner wall of casing 10,
The internal perisporium of output stage ring gear 524 has engaging tooth to be sequentially connected with output stage planetary gear 522.
Further, bearing 40, output stage internal tooth are only supported in the side (front side as shown in Figure 4) of output stage ring gear 524
The other side (rear side as shown in Figure 4) of circle 524 is equipped with locating plate 54, and locating plate 54 is fixedly connected with casing 10, can be to defeated
Go out grade ring gear 524 and carry out axially position, prevents output stage ring gear 524 from axial motion occurs.In addition, by using locating plate
54 replace alignment pin in the related technology to be positioned, and can further shorten the axial length of electric tool 100.
According to the utility model further embodiment, transmission output stage 52 further includes：Output stage sun gear 523, it is defeated
Go out grade sun gear 523 between drive shaft 21 and output shaft 30 and is sequentially connected with output stage planetary gear 522.
Optionally, the rotation axis of output stage sun gear 523 can be overlapped with the axis of output shaft 30, the output stage sun
Gear 523 can be with transmission input stage 51 or positioned at transmission input stage 51 and the transmission being driven between output stage 52 centre cascade
It connects, realizes the transmission of power.
In some instances, the transmission series of transmission component 50 is greater than or equal to 2, and each gear stage includes sun gear
With the planetary gear being sequentially connected with it, output stage sun gear 523 is connect with the planetary gear of a upper gear stage, transmission component
50 further include shift ring gear 533, shift ring gear 533 be movably disposed in casing 10 with output stage sun gear 523
With planetary at least one engagement of a upper gear stage.
For example, when if the transmission series of transmission component 50 is 2 grades, transmission component 50 includes transmission input stage 51 and is driven defeated
Go out grade 52, transmission input stage 51 includes input stage planetary gear 512 and input stage sun gear 511, and transmission output stage 52 includes
Output stage planetary gear 522 and output stage sun gear 523, shift ring gear 533 can respectively with input stage planetary gear 512
With at least one engagement of output stage sun gear 523.
When ring gear 533 of shifting gears is moved to the position only engaged with input stage planetary gear 512, input stage planetary gear
512 have relative motion with output stage sun gear 523, and the output rotating speed of output shaft 30 is relatively low at this time；When shift ring gear 533
When being moved to the position engaged with input stage planetary gear 512, output stage sun gear 523, input stage planetary gear 512 and defeated
Go out grade sun gear 523 to move synchronously, the output rotating speed of output shaft 30 is higher at this time.From there through moving gear shift ring gear 533,
The switching that different drive ratios may be implemented, to realize the gear shifting action of low speed and high speed.
If transmission series is 3 grades, transmission component 50 includes transmission input stage 51, transmission output stage 52 and is driven intermediate
Grade, shift ring gear 533 can be engaged with intergrade planetary gear 532 and at least one of output stage sun gear 523 respectively,
The course of work of specific gear shifting action is similar with the transmission component 50 that series is 2, and details are not described herein.
In some instances, casing 10 is externally provided with shift switch 61, and shift switch 61 is moved by 62 band of connector of shifting gears
Ring gear 533 is kept off to move.For example, shift switch 61 can be the axially movable push button along casing 10, user can pass through
It pushes shift switch 61 to be moved forward or rearward, to drive shift ring gear 533 to move, and then changes the biography of transmission component 50
Dynamic ratio realizes gear shifting action to control the output rotating speed of electric tool 100.
As shown in figs 2-4, in some instances, shift connector 62 forms one end and is connect with shift ring gear 533, is another
One end is directed away from the L-shaped steel wire of the side bending of output shaft.
Specifically, shift connector 62 includes the axially extending traversing section and radially extending along casing 10 along casing 10
Longitudinal sections, one end of one end of longitudinal sections and traversing section connects, and the other end of longitudinal sections is connect with shift ring gear 533, cross
The side (rear side as shown in Figure 4 and Figure 6) that bearing 40 is directed away to the other end of section extends and is connect with shift switch 61.
L-shaped steel wire is arranged to by the connector 62 that will shift gears as a result, compared with electric tool 100 in the related technology,
The rear shifting of shift switch 61 may be implemented, to visually make the axial length of electric tool 100 seem short and small.
With reference to Fig. 1-Fig. 8, some specific embodiments of electric tool 100 according to the present utility model are described in detail.
As Figure 1-Figure 8, include according to the electric tool of the utility model embodiment 100：First shell 11, driver
20, transmission device and output shaft 30.
Driver 20 is set in first shell 11 and has drive shaft 21.Transmission device includes second shell 12 and set on the
At least part (rear portion as shown in Figures 2 and 3) of transmission component 50 in two shells 12, second shell 12 stretches into first
In shell 11, there is transmission component 50 transmission input stage 51 and transmission output stage 52, transmission input stage 51 to connect with drive shaft 21
It connects.
At least part of output shaft 30 is installed on by two bearings 40 in second shell 12, and output shaft 30 and transmission
Output stage 52 connects, wherein transmission output stage 52 includes being set in the planet carrier 521 of output shaft 30 and being installed on planet carrier 521
Output stage planetary gear 522, a bearing 40 in two bearings 40 in neighbouring output stage planetary gear 522 is coated at planet
Frame 521, and distance d is 0mm-10mm between the opposite side of two bearings 40.
According to the electric tool 100 of the utility model embodiment, using two spacing are smaller or the bearing 40 of zero spacing
Output shaft 30 is supported, the axial length of electric tool 100 can be shortened, by by planet carrier 521 and two bearings 40
In one be set with, output shaft 30 can be not only supported, can also by two components electric tool 100 axis
Upward length merges into the thickness of a component, is conducive to the axial length for further shortening electric tool 100.
One embodiment according to the present utility model, transmission output stage 52 further include：Output stage sun gear 523 and output
Grade ring gear 524.Output stage sun gear 523 between drive shaft 21 and output shaft 30 and with output stage planetary gear 522
It is sequentially connected.Output stage ring gear 524 is installed in second shell 12 and is sequentially connected with output stage planetary gear 522.
In some instances, output stage ring gear 524 forms the annular of the circumferentially extending along second shell 12, in output stage
The periphery wall of gear ring 524 is connect with the inner wall of second shell 12, the internal perisporium of output stage ring gear 524 have engaging tooth with it is defeated
Go out the drive connection of grade planetary gear 522.
Optionally, output stage sun gear 523 is located in second shell 12 and the rotation axis of output stage sun gear 523
It can be overlapped with the axis of output shaft 30, output stage sun gear 523 can be with transmission input stage 51 or positioned at transmission input
Transmission intergrade between grade 51 and transmission output stage 52 connects, to realize the transmission of power.
As shown in Fig. 4, Fig. 6 and Fig. 8, one embodiment according to the present utility model, output stage sun gear 523 with output
Locating plate 54 is equipped between grade ring gear 524 to carry out axis to output stage sun gear 523 and output stage ring gear 524 respectively
To positioning.
Specifically, locating plate 54 is fixedly connected with second shell 12, the side of output stage ring gear 524 (as shown in Figure 4
Front side) bearing 40 is only supported, the other side (rear side as shown in Figure 4) of output stage ring gear 524 and the side of locating plate 54 are (such as
Front side shown in Fig. 4) only to support, the side (front side as shown in Figure 4) of output stage sun gear 523 is another with locating plate 54
Side (rear side as shown in Figure 4) is only supported.It is positioned such that piece 54 can be respectively to output stage ring gear 524, output stage sun gear
523 carry out axially positions, prevent output stage ring gear 524 and output stage sun gear 523 from occurring axial motion, and by using
Locating plate 54 replaces alignment pin in the related technology to be positioned, and can further shorten the axial length of electric tool 100.
As shown in Figure 4 and Figure 6, one embodiment according to the present utility model, transmission component 50 further include：The intergrade sun
Gear 531 and intergrade planetary gear 532, intergrade sun gear 531 are connect with transmission input stage 51, intergrade planetary gear
532 are sequentially connected with intergrade sun gear 531, and intergrade planetary gear 532 is connect with output stage sun gear 523.
That is, transmission component 50 includes transmission input stage 51, transmission output stage 52 and transmission intergrade.
It includes input stage planetary gear 512 and input stage sun gear 511, input stage sun gear to be driven input stage 51
511 are set in drive shaft 21 and are engaged with input stage planetary gear 512, are installed in second shell 12 and input stage planet tooth
The input stage ring gear 513 of 512 engagement of wheel.
It includes intergrade sun gear 531 and intergrade planetary gear 532, intergrade sun gear 531 to be driven intergrade
It is connect with input stage planetary gear 512, intergrade sun gear 531 and intergrade planetary gear 532 engage, in second shell 12
Equipped with the shift ring gear 533 engaged with intergrade planetary gear 532.
It includes output stage planetary gear 522, output stage sun gear 523 and planet carrier 521, output stage to be driven output stage 52
Sun gear 523 is connect with intergrade planetary gear 532, and output stage planetary gear 522 and output stage sun gear 523 engage,
The output stage ring gear 524 engaged with output stage planetary gear 522 is equipped in second shell 12.Output stage planetary gear 522 is pacified
Loaded on planet carrier 521, planet carrier 521 is sheathed on the input terminal 31 of output shaft 30 and is rotated synchronously with output shaft 30.
Wherein, bracing ring 63, bracing ring 63 and output are equipped between input stage ring gear 513 and output stage ring gear 524
It is equipped with the locating plate 54 being connect with second shell 12, i.e. input stage ring gear 513 and output stage ring gear between grade ring gear 524
524 rear side is all provided with there are one the locating plate 54 being connect with second shell 12, to respectively to input stage ring gear 513 and output
Grade ring gear 524 carries out axially position.
In some instances, it is equipped with moveable shift ring gear 533 in second shell 12, is used for and output stage sun tooth
At least one engagement of wheel 523 and intergrade planetary gear 532.
When ring gear 533 of shifting gears is moved to the position only engaged with intergrade planetary gear 532, ring gear 533 of shifting gears
It can be fixedly connected with input stage ring gear 513 (such as snapping connection), at this time intergrade planetary gear 532 and the output stage sun
Gear 523 has relative motion；When shift ring gear 533 is moved to and intergrade planetary gear 532, output stage sun gear
When the position of 523 engagements, shift ring gear 533 is detached with input stage ring gear 513, intergrade planetary gear 532 and output stage
Sun gear 523 moves synchronously, and from there through moving gear shift ring gear 533, the switching of different drive ratios may be implemented, to real
Existing gear shifting action.
In some instances, first shell 11 is externally provided with shift switch 61, and shift switch 61 passes through 62 band of connector of shifting gears
Move gear ring gear 533 to move.For example, shift switch 61 can be the axially movable push button along first shell 11, user
To drive shift ring gear 533 to move, and then transmission group can be changed by pushing shift switch 61 to be moved forward or rearward
The transmission ratios of part 50 realize the gear shifting action of high speed and low speed to control the output rotating speed of electric tool 100.
In some instances, second shell 12 has the jack 121 that the connector 62 that is suitable for shifting gears passes through, connector of shifting gears
62 formation one end are connect with ring gear 533 of shifting gears, the other end is directed away from the L-shaped steel wire that the side of output shaft is bent.
Specifically, the rear end of second shell 12 is inserted into first shell 11 and the rear portion of second shell 12 is equipped with and is suitable for shift
The jack 121 that connector 62 passes through.
Further, shift connector 62 includes along the axially extending traversing section of second shell 12 and along the diameter of casing 10
To the longitudinal sections of extension, one end of longitudinal sections is pierced by from the jack 121 in second shell 12 to be connect with one end of traversing section, is indulged
It is connect to the other end of section with shift ring gear 533, the other end of traversing section is directed away from side (such as Fig. 4 and Fig. 6 of bearing 40
Shown in rear side) extend and connect with the shift switch 61 in first shell 11.It is arranged to as a result, by the connector 62 that will shift gears
The rear shifting of shift switch 61 may be implemented compared with electric tool 100 in the related technology in L-shaped steel wire, to visually
The axial length of electric tool 100 is set to seem short and small.
As shown in figure 8, one embodiment according to the present utility model, is equipped with connection between transmission component 50 and driver 20
One end of disk 55, drive shaft 21 is connect across terminal pad 55 with the transmission input stage 51 with transmission component 50.Optionally, terminal pad
55 can be connected with first shell 11 and the clamping of second shell 12 respectively.
According to other compositions of the electric tool 100 of the utility model embodiment and operate for ordinary skill
All it is known for personnel, is not detailed herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art
The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or
Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.
While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that：
Can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and objective, modification, replaced
And modification, the scope of the utility model are limited by claim and its equivalent.
Claims (20)
1. a kind of electric tool, which is characterized in that including：
Casing；
Driver, the driver are set in the casing and have drive shaft；
Output shaft, the output shaft are installed in the casing by least two bearings and are arranged with the drive shaft interval；
Transmission component, the transmission component are set in the casing and with transmission input stage and transmission output stage, the transmissions
Input stage and the driving axis connection, the transmission output stage are connected to the output shaft,
Wherein, the transmission output stage includes the planet carrier for being set in the output shaft and the output stage for being installed on the planet carrier
Planetary gear, one at least two bearing in the neighbouring output stage planetary gear is coated at the planet carrier, and
Distance d is 0mm-10mm between the opposite side of at least two bearings being adjacently positioned.
2. electric tool according to claim 1, which is characterized in that the bearing is rolling bearing, the axis of the bearing
Inner ring is held to rotate synchronously with the output shaft, the planet carrier.
3. electric tool according to claim 1, which is characterized in that the middle part of the planet carrier, which has, is suitable for the output
The cross sectional shape of the through-hole that axis is worn, the through-hole is non-circular.
4. electric tool according to claim 1, which is characterized in that the planet carrier prolongs along the axial direction of the output shaft
It stretches, and the thickness of the planet carrier axially and the width for the bearing for being coated at the planet carrier are roughly equal.
5. according to the electric tool described in any one of claim 1-4, which is characterized in that the planet carrier is integrally formed
Part.
6. according to the electric tool described in any one of claim 1-4, which is characterized in that the planet carrier includes：
Switching part, the switching part is set in the output shaft, and the internal perisporium of the switching part is connected to the output shaft, institute
The periphery wall for stating switching part is connect with the bearing；
Body part, the body part are installed on the switching part, and the output stage planetary gear is connect with the body part.
7. electric tool according to claim 6, which is characterized in that the middle part of the body part has location hole, described
The planetary side of the direction output stage of switching part has the positioning section for being suitable for being threaded through in the location hole, and described
There is gap between body part and the bearing.
8. electric tool according to claim 6, which is characterized in that the direction output stage planet tooth of the switching part
With multiple along its circumferentially spaced positioning protrusion, the body part has multiple for avoiding the positioning for the side of wheel
The escape groove of protrusion.
9. electric tool according to claim 1, which is characterized in that be additionally provided in the casing and the output stage planet
The bearing, the output stage internal tooth are only supported in the side of the output stage ring gear of gear drive connection, the output stage ring gear
The other side of circle is equipped with locating plate, for carrying out axially position to the output stage ring gear.
10. the electric tool according to claim 1 or 9, which is characterized in that the transmission output stage further includes：Output stage
Sun gear, the output stage sun gear between the drive shaft and the output shaft and with the output stage planet tooth
Wheel is sequentially connected.
11. electric tool according to claim 10, which is characterized in that the transmission series of the transmission component is more than or waits
In 2, and each gear stage includes sun gear and the planetary gear that is sequentially connected with it,
The output stage sun gear is connect with the planetary gear of a upper gear stage, and the transmission component further includes shift internal tooth
Circle, the shift ring gear are movably disposed in the casing with the row with the output stage sun gear and a upper gear stage
At least one engagement of star gear.
12. electric tool according to claim 11, which is characterized in that the casing is externally provided with shift switch, described to change
Position switch drives the shift ring gear to move by connector of shifting gears.
13. electric tool according to claim 12, which is characterized in that the shift connector forms one end and changed with described
The connection of gear ring gear, the other end are directed away from the L-shaped steel wire of the side bending of the output shaft.
14. a kind of electric tool, which is characterized in that including：
First shell；
Driver, the driver are set in the first shell and have drive shaft；
Transmission device, the transmission device include second shell and the transmission component in the second shell, and described second
At least part of shell stretches into the first shell, and the transmission component has transmission input stage and transmission output stage, institute
State transmission input stage and the driving axis connection；
At least part of output shaft, the output shaft be installed in the second shell by two bearings and with the transmission
Output stage connects,
Wherein, the transmission output stage includes the planet carrier for being set in the output shaft and the output stage for being installed on the planet carrier
Planetary gear, a bearing outside in described two bearings in the neighbouring output stage planetary gear in the planet carrier, and
Distance d is 0mm-10mm between the opposite side of two bearings.
15. electric tool according to claim 14, which is characterized in that the transmission output stage further includes：
Output stage sun gear, the output stage sun gear between the drive shaft and the output shaft and with it is described defeated
Go out a grade Planetary Gear Transmission connection；
Output stage ring gear, the output stage ring gear are installed in the second shell and are passed with the output stage planetary gear
Dynamic connection.
16. electric tool according to claim 15, which is characterized in that the output stage sun gear and the output stage
Locating plate is equipped between ring gear to carry out axially position to the output stage sun gear and the output stage ring gear respectively.
17. electric tool according to claim 15, which is characterized in that the transmission component further includes：
Intergrade sun gear, the intergrade sun gear are connect with the transmission input stage；
Intergrade planetary gear, the intergrade planetary gear is sequentially connected with the intergrade sun gear, and the centre
Grade planetary gear is connect with the output stage sun gear.
18. electric tool according to claim 17, which is characterized in that be equipped with moveable shift in the second shell
Ring gear, for the output stage sun gear and the intergrade are planetary at least one engages.
19. electric tool according to claim 18, which is characterized in that the first shell is externally provided with moveable shift
Switch, the shift switch drive the shift ring gear to move by connector of shifting gears.
20. electric tool according to claim 19, which is characterized in that the second shell, which has, is suitable for shift company
The jack that fitting passes through, the shift connector formed one end connect with the shift ring gear, the other end be directed away from it is described
The L-shaped steel wire of the side bending of output shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721868425.XU CN207961473U (en) | 2017-12-27 | 2017-12-27 | Electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721868425.XU CN207961473U (en) | 2017-12-27 | 2017-12-27 | Electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207961473U true CN207961473U (en) | 2018-10-12 |
Family
ID=63730200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721868425.XU Active CN207961473U (en) | 2017-12-27 | 2017-12-27 | Electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207961473U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973625A (en) * | 2017-12-27 | 2019-07-05 | 苏州宝时得电动工具有限公司 | Electric tool |
-
2017
- 2017-12-27 CN CN201721868425.XU patent/CN207961473U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973625A (en) * | 2017-12-27 | 2019-07-05 | 苏州宝时得电动工具有限公司 | Electric tool |
| CN109973625B (en) * | 2017-12-27 | 2023-12-08 | 苏州宝时得电动工具有限公司 | Electric tool |
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