CN106541167A - Torsion exports instrument - Google Patents
Torsion exports instrument Download PDFInfo
- Publication number
- CN106541167A CN106541167A CN201511005110.8A CN201511005110A CN106541167A CN 106541167 A CN106541167 A CN 106541167A CN 201511005110 A CN201511005110 A CN 201511005110A CN 106541167 A CN106541167 A CN 106541167A
- Authority
- CN
- China
- Prior art keywords
- gear
- wheel carrier
- planetary
- sun gear
- drive shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/02—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by electric power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
Abstract
The invention discloses a kind of torsion exports instrument, including：Motor, housing, output shaft, actuating device and adjusting means；Motor is provided with a drive shaft, and drive shaft connects the first sun gear and the second sun gear；Actuating device includes：The first row star-wheel group, the second planetary gear set and ring gear；The first row star-wheel group includes the first row star-wheel and first planet wheel carrier, and the second planetary gear set includes the second planetary gear and the second planetary wheel carrier；The first row star-wheel and the second planetary gear can be engaged with ring gear；Adjusting means includes：Can be relative to the locking piece of housing movement；Locking piece has：The first position of the relative rotation of locking first planet wheel carrier and housing and the second position of the relative rotation of locking ring gear and housing；When locking piece is in first position, there is between drive shaft and the second planetary wheel carrier the first gear ratio；When locking piece is in the second position, there is between drive shaft and the second planetary wheel carrier the second gear ratio.The torsion output instrument easily realizes miniaturization.
Description
Technical field
The present invention relates to a kind of torsion exports instrument, and in particular to a kind of electric drill.
Background technology
The torsion such as electric drill and screwdriver output instrument is generally included：Motor, actuating device and output shaft, wherein motor also include drive shaft, drive shaft drive assembly to output power to output shaft.
When these instruments are used for the torsion output instrument of hand-held, user generally needs one hand or hands grasping instrument to be operated.And when hand-held torsion output instrument it is oversized when, it is evident that this is detrimental to what user was operated.So it is desirable that in the case that torsion output instrument meets the requirement of moment of torsion, rotating speed and the power of output etc., the size of instrument is the smaller the better.
But in existing torsion output instrument; in order to realize that torsion output instrument can have larger outputting torsion; actuating device would generally include multistage planet train; and in order to realize different output speeds; the ring gear that can be moved up and down is will also include in actuating device; this causes the axial dimension of torsion output instrument larger, is unfavorable for the miniaturization of implementation tool.
The content of the invention
A kind of torsion exports instrument, including：Motor, housing, output shaft, actuating device and adjusting means；Motor is provided with a drive shaft, and housing is used to accommodate motor, and output shaft is used for output torque, and for transmission is realized between drive shaft and output shaft, adjusting means is used to adjust the gear ratio between drive shaft and output shaft actuating device；Wherein, drive shaft connects or be formed with can be with the first sun gear of drive shaft turns and the second sun gear；Actuating device includes：The first row star-wheel group, the second planetary gear set and ring gear；The first row star-wheel group includes the first row star-wheel and first planet wheel carrier, and the second planetary gear set includes the second planetary gear and the second planetary wheel carrier, and ring gear is formed with internal tooth；The first row star-wheel is rotatably attached to first planet wheel carrier, second planetary gear is rotatably attached to the second planetary wheel carrier, the first row star-wheel and the second planetary gear can be engaged with ring gear, and the first row star-wheel and the second planetary gear are engaged with the first sun gear and the second sun gear respectively；Adjusting means includes：Can be relative to the locking piece of housing movement；Locking piece at least has：First position and the second position；First position locks the relative rotation of first planet wheel carrier and housing, the relative rotation of second position locking ring gear and housing；When locking piece is in first position, the gear ratio between drive shaft and the second planetary wheel carrier is the first gear ratio；When locking piece is in the second position, the gear ratio between drive shaft and the second planetary wheel carrier is the second gear ratio.
Further, the first gear ratio is more than the second gear ratio.
Further, locking piece is also with can make first planet wheel carrier and ring gear with respect to the 3rd position of housing into rotation.
Further, the first sun gear is identical with the profile of tooth of the second sun gear.
Further, radius of addendum of the radius of addendum of the first sun gear less than the second sun gear.
Further, the number of teeth of the number of teeth of the first sun gear less than the first row star-wheel.
Further, the number of teeth of the number of teeth of the second sun gear more than the second planetary gear.
Further, ratio of the ratio of the number of teeth of the number of teeth of the first sun gear and the first row star-wheel less than the number of teeth of the number of teeth and the second planetary gear of the second sun gear.
Further, first planet wheel carrier includes：For the wheel carrier limiting section coordinated with the locking piece in first position；Wheel carrier limiting section is arranged at the outside of first planet wheel carrier；Ring gear includes：For the gear ring limiting section coordinated with the locking piece in the second position；Gear ring limiting section is arranged at the outside of ring gear；Wheel carrier limiting section and gear ring limiting section in the axial direction of drive shaft in a distance.
Further, torsion output instrument is electric drill or electric screwdriver.
The torsion output instrument can realize different torsion outputs, and be advantageously implemented compact in size.
Description of the drawings
Fig. 1 is the shape assumption diagram that torsion exports instrument；
Fig. 2 is the sectional view of the part-structure of torsion output instrument；
Fig. 3 is the sectional view of the actuating device and adjusting means in Fig. 2；
Fig. 4 is the explosive view of structure shown in Fig. 3；
Fig. 5 is sectional view of the structure shown in Fig. 3 along line B-B；
Fig. 6 is sectional view of the structure shown in Fig. 3 along line C-C.
Specific embodiment
Make specific introduction to the present invention below in conjunction with the drawings and specific embodiments.
Torsion output instrument 100 shown in Fig. 1 includes：Housing 11 and switch 12.
As shown in Fig. 2 torsion output instrument 100 also includes：Motor 13, output shaft 14, actuating device 20 and adjusting means 30（Figure is not marked）.
For convenience of explanation, torsion exports instrument 100 using an electric drill as example；Certainly torsion output instrument 100 can also be that other torsion export instruments 100, such as screwdriver or have the multi-purpose tool of screwdriver and electric drill function concurrently；Or, torsion output instrument 100 can also be the instrument that the moment of torsion of output can be converted into other forms motion, and these instruments may be for workpiece of polishing, such as sander, angle mill；These instruments are likely to for cutting workpiece, such as reciprocating sow, annular saw, sweep-saw；These instruments are likely to use for doing impact, such as electric hammer；These instruments are also likely to be gardens class instrument, such as pruner and chain saw；These instruments are likely to as other purposes, such as blender in addition.
As long as these instruments have the actuating device 20 being arranged between motor 13 and output shaft 14, it is possible to using the flesh and blood of technical scheme disclosed below.
As shown in figure 1, housing 11 is used to accommodate each part in torsion output instrument 100, housing 11 can include handle portion 111 and receiving portion 112.Handle portion 111 is used to grip for user, and receiving portion 112 forms the receiving space for accommodating each part；Switch 12 can be installed on handle portion 111.
User is capable of the trigger switch 12 of relatively convenient when handle portion 111 is gripped, and the switch 12 can be configured so that the main trigger for starting that the torsion exports instrument 100.For electric drill, clamping device 15 can also be included, clamping device 15 is exported in instrument 100 for an attachment is clamped in the torsion, it is possible to output power to attachment by the clamping device 15, so as to realize that the torsion exports the instrumental function of instrument 100.
Motor 13 is converted into power output for the energy for providing energy source.Motor 13 is arranged in housing 11, and motor 13 includes the drive shaft 131 that can be rotated with first axle A as axle, and one end of drive shaft 131 is used to export power to actuating device 20.
Output shaft 14 is used for output torque, and output shaft 14 can also be rotated by axle of first axle A.
Actuating device 20 is arranged between motor 13 and output shaft 14, for transmission is realized between the drive shaft 131 and output shaft 14 of motor 13.
Adjusting means 30 is used to adjust the gear ratio between drive shaft 131 and output shaft 14, so as to realize that output shaft 14 is exported at different rates, and then realizes that torsion output instrument 100 exports different torsion.
The content of technical scheme is clearly illustrated for convenience, makes defined below：First axle A directions and the direction parallel with first axle A are defined the circumferencial direction of the axle centered on first axle A axially, to be defined as circumference.
Specifically, referring to shown in Fig. 3 to Fig. 6, in torsion output instrument 100, also include that the first sun gear 16 and the second sun gear 17, the first sun gear 16 and the second sun gear 17 can be rotated with the rotation of drive shaft 131 respectively.
Actuating device 20 includes the first row star-wheel group（Figure is not marked）, the second planetary gear set（Figure is not marked）With ring gear 21.The first row star-wheel group includes the first row star-wheel 22 and first planet wheel carrier 23, and the first row star-wheel 22 is rotatably attached to first planet wheel carrier 23, and the first row star-wheel 22 is also constituted with the first sun gear 16 and engaged.Second planetary gear set includes the second planetary gear 24 and the second planetary wheel carrier 25, and the second planetary gear 24 is rotatably attached to the second planetary wheel carrier 25, and the second planetary gear 24 is also constituted with the second sun gear 17 and engaged.Ring gear 21 is formed with internal tooth 211, and the first row star-wheel 22 and the second planetary gear 24 may be contained within ring gear 21 and can be while being engaged with ring gear 21.
Adjusting means 30 includes locking piece 31, and locking piece 31 can be moved along the first direction D parallel to first axle A relative to housing 11.Locking piece 31 can have when D in the first direction is moved：First position, the second position and the 3rd position.
Wherein, when locking piece 31 is located at first position, locking piece 31 can lock the relative rotation of 23 relative housing 11 of first planet wheel carrier, and at this moment the gear ratio between drive shaft 131 and the second planetary wheel carrier 25 is the first gear ratio, and the second planetary wheel carrier 25 can be with the first rotating speed output power.When locking piece 31 is located at the second position, locking piece 31 can lock the relative rotation of 21 relative housing 11 of ring gear, at this moment the gear ratio between drive shaft 131 and the second planetary wheel carrier 25 is the second gear ratio, second planetary wheel carrier 25 can export power with the second rotating speed, second gear ratio can be different from the first gear ratio, further, the second gear ratio is less than the first gear ratio.When locking piece 31 is located at three positions, locking piece 31 can discharge first planet wheel carrier 23 and ring gear 21 simultaneously so that first planet wheel carrier 23 and ring gear 21 can be rotated relative to housing 11, and now, the second planetary wheel carrier 25 is in neutral position state.
So, can realize with different gear ratios between drive shaft 131 and the second planetary wheel carrier 25, so as to realize the different torsion output of torsion output instrument 100 only by moving up and down for a locking piece 31.Furthermore, the first row star-wheel group and the second planetary gear set share a ring gear 21, and ring gear 21 need not be moved up and down, and reduce the axial dimension of actuating device 20, are conducive to the compact in size of torsion output instrument 100.
In order to realize the technical scheme of the above, more specifically, the first sun gear 16 and the second sun gear 17 can be integrally formed with drive shaft 131 and can also be formed separately, here as a example by being formed separately.
Wherein, the first sun gear 16 includes that engaging piece 161 and extension 162, engaging piece 161 and extension 162 are respectively formed in the different axial location of the first sun gear 16.Engaging piece 161 is formed with for transmitting the engaging tooth of power, and extension 162 can be used for installing the second sun gear 17.Second sun gear 17 is installed on the extension 162 of the first sun gear 16 and can constitute synchronous axial system with the first sun gear 16, second sun gear 17 is also formed with for transmitting the engaging tooth of power, and the profile of tooth of the engaging tooth of the second sun gear 17 is identical with the profile of tooth of the engaging tooth of the first sun gear 16.In addition, the radius of the outside circle of the second sun gear 17 is also greater than the radius of the outside circle of the first sun gear 16, this causes the number of teeth of the engaging tooth of the second sun gear 17 more than the number of teeth of the engaging tooth of the first sun gear 16.
The first row star-wheel 22 is engaged with the engaging piece 161 of the first sun gear 16, the first row star-wheel group includes multiple the first row star-wheels 22, for example include four the first row star-wheels 22, four the first row star-wheels 22 are arranged around the first sun gear 16, and the number of teeth of the engaging tooth of the first row star-wheel 22 is also greater than the number of teeth of the engaging tooth of the first sun gear 16.
First planet wheel carrier 23 is provided with the first mounting pin 231, and the first row star-wheel 22 is rotatably attached in the first mounting pin 231.In the case where first planet wheel carrier 23 is not locked out the locking of part 31, the relative housing 11 of 23 energy of first planet wheel carrier is circumferentially rotated.Wheel carrier limiting section 232 is also formed with the outside of first planet wheel carrier 23, wheel carrier limiting section 232 is the spacing preiection structure stretched out from convex on first planet wheel carrier 23.
Second planetary gear 24 is constituted with the second sun gear 17 and is engaged, second planetary gear set includes multiple second planetary gears 24, for example include five the second planetary gears 24, five the second planetary gears 24 are arranged around the second sun gear 17, and the number of teeth of the engaging tooth of the second planetary gear 24 is also less than the number of teeth of the engaging tooth of the second sun gear 17.This causes the ratio of the number of teeth of the number of teeth of the engaging tooth of the first sun gear 16 with the ratio of the number of teeth of the engaging tooth of the first row star-wheel 22 less than the engaging tooth of the second sun gear 17 and the number of teeth of the engaging tooth of the second planetary gear 24.
Second planetary wheel carrier 25 is provided with the second mounting pin 251, and the second planetary gear 24 is rotatably attached in the second mounting pin 251.Second planetary wheel carrier 25 is also formed with output section 252, and output section 252 is for by the power output of the second planetary wheel carrier 25.
Ring gear 21 surrounds the first row star-wheel 22 and the second planetary gear 24, and the axial location of ring gear 21 is fixed.The inner side of ring gear 21 forms foregoing internal tooth 211, and outside forms the gear ring limiting section 212 that can coordinate with locking piece 31.Gear ring limiting section 212 can also be the spacing preiection structure stretched out from the outer surface convex of ring gear 21.In the case where ring gear 21 is not locked out the locking of part 31, the relative housing 11 of 21 energy of ring gear is circumferentially rotated, and when locking piece 31 is coordinated with gear ring limiting section 212, circumferentially rotating for ring gear 21 is locked.
Wherein, the gear ring limiting section 212 of the wheel carrier limiting section 232 and ring gear 21 of first planet wheel carrier 23 is met certain distance in the axial direction.When locking piece 31 is moved between both in the axial direction, first planet wheel carrier 23 and ring gear 21 are released.
Locking piece 31 is a stop pin, and stop pin can D be moved to the second position and the 3rd position between both that the first position that coordinated with wheel carrier limiting section 232 and gear ring limiting section 212 are coordinated in the first direction by user's driving.For the movement of guide lock pin, adjusting means 30 can also include being oriented to shell wall 32, be oriented to shell wall 32 and be formed with the gathering sill 321 for axially extending, and stop pin can pass through the gathering sill 321.
So, when locking piece 31 is moved to the first position coordinated with wheel carrier limiting section 232, first planet wheel carrier 23 is locked relative to the rotation of housing 11, and ring gear 21 is released.At this moment, when motor 13 starts, power is transferred to the first sun gear 16 by drive shaft 131, power is transferred to the first row star-wheel 22 by the first sun gear 16, because first planet wheel carrier 23 is locked, power is transferred to ring gear 21 by the first row star-wheel 22, and ring gear 21 is rotated.Simultaneously, power is also transferred to the second sun gear 17 by drive shaft 131, at this moment, for the second planetary gear 24, which constitutes the train of dual input with the second sun gear 17 and ring gear 21, so that the second planetary wheel carrier 25 is exported with low speed, that is to say.
When locking piece 31 is moved to the second position coordinated with gear ring limiting section 212, ring gear 21 is locked relative to the rotation of housing 11.At this moment, when motor 13 starts, power is transferred to the first sun gear 16 by drive shaft 131, power is transferred to the first row star-wheel 22 by the first sun gear 16, because ring gear 21 is maintained static, so power is transferred to first planet wheel carrier 23 by the first row star-wheel 22, but it is because that first planet wheel carrier 23 is not connected to output device, the power output that do not carry out so first planet wheel carrier 23 only dallied.Simultaneously, power is also transferred to the second sun gear 17 by drive shaft 131, power is transferred to the second planetary gear 24 by the second sun gear 17, thus ring gear 21 is maintained static, so power is transferred to the second planetary wheel carrier 25 by the second planetary gear 24, so that the first row star-wheel group and the second planetary gear set now only only has the second planetary gear set to play a part of deceleration, thus the second planetary wheel carrier 25 is that is to say with speedy carding process.
The basic principles, principal features and advantages of the present invention have been shown and described above.It should be understood by those skilled in the art that, the invention is not limited in any way for above-described embodiment, all technical schemes obtained by the way of equivalent or equivalent transformation, all falls within protection scope of the present invention.
Claims (10)
1. a kind of torsion exports instrument, including：
Motor, is provided with a drive shaft；
Housing, for accommodating the motor；
Output shaft, for output torque；
Actuating device, for transmission is realized between the drive shaft and the output shaft；
Adjusting means, for adjusting the gear ratio between the drive shaft and the output shaft；
Wherein, drive shaft connection or be formed with can be with the first sun gear of the drive shaft turns and the second sun gear；
The actuating device includes：
The first row star-wheel group, including the first row star-wheel and first planet wheel carrier；
Second planetary gear set, including the second planetary gear and the second planetary wheel carrier；
Ring gear, is formed with internal tooth；
The first row star-wheel is rotatably attached to the first planet wheel carrier；
Second planetary gear is rotatably attached to second planetary wheel carrier；
The first row star-wheel and second planetary gear can be engaged with the ring gear；
The first row star-wheel and second planetary gear are engaged with first sun gear and second sun gear respectively；
The adjusting means includes：
Locking piece, can move relative to the housing；
The locking piece at least has：
First position, locks the relative rotation of the first planet wheel carrier and the housing；
The second position, locks the relative rotation of the ring gear and the housing；
When the locking piece is in the first position, the gear ratio between the drive shaft and second planetary wheel carrier is the first gear ratio；
When the locking piece is in the second position, the gear ratio between the drive shaft and second planetary wheel carrier is the second gear ratio.
2. torsion according to claim 1 exports instrument, it is characterised in that：
First gear ratio is more than second gear ratio.
3. torsion according to claim 1 exports instrument, it is characterised in that：
The locking piece is also with the 3rd position that can make the relatively described housing into rotation of the first planet wheel carrier and the ring gear.
4. torsion according to claim 1 exports instrument, it is characterised in that：
First sun gear it is identical with the profile of tooth of second sun gear.
5. torsion according to claim 1 exports instrument, it is characterised in that：
Radius of addendum of the radius of addendum of first sun gear less than second sun gear.
6. torsion according to claim 1 exports instrument, it is characterised in that：
The number of teeth of the number of teeth of first sun gear less than the first row star-wheel.
7. torsion according to claim 1 exports instrument, it is characterised in that：
The number of teeth of the number of teeth of second sun gear more than second planetary gear.
8. torsion according to claim 1 exports instrument, it is characterised in that：
The number of teeth of first sun gear is less than the number of teeth of second sun gear and the ratio of the number of teeth of second planetary gear with the ratio of the number of teeth of the first row star-wheel.
9. torsion according to claim 1 exports instrument, it is characterised in that：
The first planet wheel carrier includes：
Wheel carrier limiting section, for coordinating with the locking piece in the first position；
The wheel carrier limiting section is arranged at the outside of the first planet wheel carrier；
The ring gear includes：
Gear ring limiting section, for coordinating with the locking piece in the second position；
The gear ring limiting section is arranged at the outside of the ring gear；
The wheel carrier limiting section and the gear ring limiting section in the axial direction of the drive shaft in a distance.
10. torsion according to claim 1 exports instrument, it is characterised in that：
The torsion output instrument is electric drill or electric screwdriver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202016107390.1U DE202016107390U1 (en) | 2015-12-28 | 2016-12-27 | Torque output tool |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520734375 | 2015-09-21 | ||
| CN2015207343750 | 2015-09-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106541167A true CN106541167A (en) | 2017-03-29 |
Family
ID=56572064
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511005110.8A Pending CN106541167A (en) | 2015-09-21 | 2015-12-28 | Torsion exports instrument |
| CN201521117503.3U Active CN205438464U (en) | 2015-09-21 | 2015-12-28 | Power tool |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521117503.3U Active CN205438464U (en) | 2015-09-21 | 2015-12-28 | Power tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN106541167A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108637320A (en) * | 2018-07-28 | 2018-10-12 | 张岩 | A kind of antioverloading electric drill |
| WO2022002061A1 (en) * | 2020-06-30 | 2022-01-06 | 南京德朔实业有限公司 | Torque output tool |
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| CN101082366A (en) * | 2006-06-01 | 2007-12-05 | 梅塔波沃克有限公司 | Electric hand tool |
| CN201027929Y (en) * | 2007-03-26 | 2008-02-27 | 无锡康格工业设计有限公司 | Multilevel reduction gear box |
| US20090233754A1 (en) * | 2005-04-01 | 2009-09-17 | Troels Pedersen | Planet Gear |
| CN101868649A (en) * | 2008-02-12 | 2010-10-20 | 尹根洙 | Power transmission apparatus using planetary gear having a plurality of gear trains and methods of use thereof |
| CN102335904A (en) * | 2010-07-20 | 2012-02-01 | 苏州宝时得电动工具有限公司 | Power tool |
| CN202266645U (en) * | 2011-08-01 | 2012-06-06 | 庆腾精密科技股份有限公司 | Multi-stage shift transmission device |
| CN202318261U (en) * | 2011-08-18 | 2012-07-11 | 王云逸 | Electric tool speed changer |
| CN102971115A (en) * | 2010-04-29 | 2013-03-13 | 喜利得股份公司 | A power tool |
| CN205437247U (en) * | 2015-12-28 | 2016-08-10 | 南京德朔实业有限公司 | Torque output tool |
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2015
- 2015-12-28 CN CN201511005110.8A patent/CN106541167A/en active Pending
- 2015-12-28 CN CN201521117503.3U patent/CN205438464U/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090233754A1 (en) * | 2005-04-01 | 2009-09-17 | Troels Pedersen | Planet Gear |
| CN101082366A (en) * | 2006-06-01 | 2007-12-05 | 梅塔波沃克有限公司 | Electric hand tool |
| CN201027929Y (en) * | 2007-03-26 | 2008-02-27 | 无锡康格工业设计有限公司 | Multilevel reduction gear box |
| CN101868649A (en) * | 2008-02-12 | 2010-10-20 | 尹根洙 | Power transmission apparatus using planetary gear having a plurality of gear trains and methods of use thereof |
| CN102971115A (en) * | 2010-04-29 | 2013-03-13 | 喜利得股份公司 | A power tool |
| CN102335904A (en) * | 2010-07-20 | 2012-02-01 | 苏州宝时得电动工具有限公司 | Power tool |
| CN202266645U (en) * | 2011-08-01 | 2012-06-06 | 庆腾精密科技股份有限公司 | Multi-stage shift transmission device |
| CN202318261U (en) * | 2011-08-18 | 2012-07-11 | 王云逸 | Electric tool speed changer |
| CN205437247U (en) * | 2015-12-28 | 2016-08-10 | 南京德朔实业有限公司 | Torque output tool |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108637320A (en) * | 2018-07-28 | 2018-10-12 | 张岩 | A kind of antioverloading electric drill |
| CN108637320B (en) * | 2018-07-28 | 2019-07-16 | 张岩 | A kind of antioverloading electric drill |
| WO2022002061A1 (en) * | 2020-06-30 | 2022-01-06 | 南京德朔实业有限公司 | Torque output tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN205438464U (en) | 2016-08-10 |
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| PB01 | Publication | ||
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Application publication date: 20170329 |