CN102937166A - Speed change tool - Google Patents
Speed change tool Download PDFInfo
- Publication number
- CN102937166A CN102937166A CN2012104436504A CN201210443650A CN102937166A CN 102937166 A CN102937166 A CN 102937166A CN 2012104436504 A CN2012104436504 A CN 2012104436504A CN 201210443650 A CN201210443650 A CN 201210443650A CN 102937166 A CN102937166 A CN 102937166A
- Authority
- CN
- China
- Prior art keywords
- moving part
- motor
- speed change
- change tool
- gear
- 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.)
- Granted
Links
Images
Abstract
The invention discloses a speed change tool which comprises a machine casing, a motor, an output shaft, a gear transmission mechanism and a control system, wherein the motor is arranged in the machine casing and outputs rotating power, and the gear transmission mechanism is arranged between the motor and the output shaft to transmit rotary output of the motor to the output shaft and comprises at least one group of gear trains and a moving part. The moving part can move between a first position and a second position, and when the moving part is at the first position and the second position, the moving part is matched with the gear trains in different modes respectively, so that the gear transmission mechanism outputs a rotating speed of the motor at a low reduction ratio and a high reduction ratio correspondingly. The moving part has a rotating speed relative to the machine casing when at the first position. The control system is matched with the moving part and used for sensing parameters for characterization of output shaft loads. After the parameters reach a preset value, the moving part is impelled to move from the first position to the second position, and the rotating speed of the moving part is reduced. The speed change tool can solve the problem of tooth breaking in the automatic gear-shifting process, and the service life of the tool is prolonged.
Description
To be the claimant be " speed change tool and shifting control method thereof " in the denomination of invention of application on August 29th, 2007 to the application, and application number is dividing an application of 200710131762.5 Chinese invention patent application.
Technical field
The present invention relates to a kind of speed change tool, especially a kind of by motor-driven instrument with the exportable different rotating speeds of variable transmission mechanism, such as electric drill, screwdriver set and hammer drill etc.
Background technique
A kind of speed change tool, such as electric drill, screwdriver set and hammer drill etc., with the exportable different rotating speed of variable transmission mechanism to adapt to different load torques.The variable transmission mechanism of speed change tool all comprises gear drive and the control system that connects motor and output shaft usually, thereby this control system is by the meshing relation change velocity ratio of change with gear drive, so that the different speed of output shaft output.In the prior art, make referrals in No. 6431289, the U. S. Patent, two ring gears in the planetary gears can be arranged respectively vertically movably forward and backward, switch the position of each ring gear with functional unit from outside, whereby, by with the rotation of planetary pinion and planet carrier one and separately rotation combine, can select the rotational speed of three kinds of output shafts.But this manually operated alternative so that the operator have to constantly to pay close attention to working state, the load variations situation of instrument and judge that what constantly should regulation and control system.This manual operation is to operator and unfriendly.And when operator's control operation component axial moves ring gear and then realizes planet carrier and when the whirl-stop device clamping of shell, be easy to cause the tooth of beating between ring gear and the shell whirl-stop device, so not only cause easily gear shift to lose efficacy, and can cause the lost of life of gear, affect the working life of whole instrument.
And for example U. S. Patent is announced the automatic transmission of No. 6824491 announcement, its control system can change according to load torque adjusts the output that realizes friction speed with the meshing relation of gear drive automatically, this control system is utilized the throw-out collar rotation of strap cam face to promote slip ring and is moved axially, and then the ring gear in the actuation gear driving mechanism moves axially and the whirl-stop device clamping that is arranged on the shell.European patent application discloses EP0787931A1 and also discloses a kind of automatic transmission.Above-mentioned these automatic transmissions are all realized automaitc shfit with the variation that the position relationship between the mechanical structure changes corresponding outputting torsion, this mechanical type gear is not only so that the mechanical realization of gear drive inside is more complicated, and owing to ring gear also rotated in the axially movable while, and shell is relatively-stationary, so when this gear in speed change the time, therefore the mutually collision and be difficult to engagement of the tooth of the ring gear in the rotation and the tooth of the whirl-stop device on the shell can't really realize automaitc shfit and carry out the purpose of industrialized implementation.
Summary of the invention
Technical problem to be solved by this invention is: a kind of speed change tool is provided, and this instrument comes simplified structure by the means of dynamo-electric combination, and is implemented in the purpose of doing automatic switchover between the different output gears.
Another technical problem to be solved by this invention is: the process stabilization that guarantees the automatic switchover gear is smooth and easy, avoids producing " beating tooth " phenomenon, thereby prolongs tool life.
Technological scheme of the present invention is: a kind of speed change tool, comprise power supply, motor, output shaft, the gear drive of connection motor and output shaft, wherein gear drive comprises at least one gear assembly and a moving part, the described moving part engagement system different from gear assembly can provide output shaft different output gears, described speed change tool also comprises a control system, and this control system comprises control unit and drive unit, but described control unit accessory drive carries out automaitc shfit.
Another technological scheme of the present invention is: a kind of speed change tool, comprise power supply, motor, output shaft, the gear drive that connects motor and output shaft, wherein gear drive comprises at least one gear assembly and a moving part, the described moving part engagement system different from gear assembly can provide output shaft different output gears, described speed change tool also comprises a control system, control system comprises control unit, functional switch and drive unit, described speed change tool has two kinds of control modes of hand control and automation, and wherein during manual mode, functional switch is off state; During automatic mode, functional switch is closed state, but this moment, the control unit accessory drive carried out automaitc shfit.
An again technological scheme of the present invention is: a kind of speed change tool, comprise power supply, motor, output shaft, the gear drive that connects motor and output shaft, wherein gear drive comprises at least one gear assembly and a moving part, the described moving part engagement system different from gear assembly can provide output shaft different output gears, described speed change tool also comprises control system, this control system comprises control unit and drive unit, when speed change tool needed gear shift, control unit was adjusted first the moment of torsion that motor passes to gear drive, and accessory drive is realized automaitc shfit again.
Description of drawings
The present invention will be further described by reference to the accompanying drawings as example for the gear of the below in the electric drill.
Fig. 1 is the partial sectional view of speed change tool of the present invention.
Fig. 2 is the local enlarged diagram of the drive unit among Fig. 1.
Fig. 3 a is the gear drive sectional view of speed change tool of the present invention when being in high gear.
Fig. 3 b is the gear drive sectional view of speed change tool of the present invention when being in low gear.
Fig. 4 a is another embodiment's of drive unit of speed change tool of the present invention partial sectional view.
Fig. 4 b is the local enlarged diagram of the drive unit among Fig. 4.
Fig. 5 is the control system functional-block diagram of speed change tool of the present invention.
Fig. 6 is the functional-block diagram of control unit the first embodiment in the speed change tool control system of the present invention.
Fig. 7 is the functional-block diagram of control unit the second embodiment in the speed change tool control system of the present invention.
Fig. 8 is the functional-block diagram of control unit the 3rd embodiment in the speed change tool control system of the present invention.
Wherein:
1, power supply 10, electric switch 11, field effect transistor
12, clutch 2, motor 3, control unit
30, processor 31, VM 32, load detecting circuit
33, drive unit control circuit 34, gear signal feeder loop 35, signal generator
36, functional switch 453, circular groove 9, speed change tool
13, main switch 40, the first row star-wheel 4, gear drive
41, the first planet carrier 42, the second planet wheel 43, the second planet carrier
44, whirl-stop device 441, internal tooth 5, drive unit
45, moving part 451, internal tooth 452, end tooth
51, driving component 512, push rod 513, steel wire cover
52, actuator 521, permanent magnet 522, coil
523, iron core 524, groove 515, screw rod
525, actuating motor 6, output shaft 8, control system
Embodiment
Shown in Fig. 3 b, it is drive unit first embodiment's of speed change tool control system of the present invention structural representation.A kind of speed change tool 9 comprises motor 2, motor power supply 1, the main switch 13 of start/stop motor, output shaft 6 and gear drive 4.Gear drive 4 comprises the first planetary gear set of being comprised of the first row star-wheel 40 and the first planet carrier, by the second planetary gear set that the second planet wheel 42 and the second planet carrier 43 form, be fixedly installed on the tool housing whirl-stop device 44 and can axially movable moving part 45.Drive unit 5 is arranged on the gear drive 4, comprise actuator 52 and driving component 51, the actuator of present embodiment is to adopt an electromagnet apparatus, comprise two permanent magnets that keep at a certain distance away 521, be arranged at permanent magnet middle iron core 523 and coil 522, wherein iron core 523 is provided with a groove 524.Driving component is that an arc push rod 512 reaches the steel wire cover 513 that connects with this arc push rod 512.Described push rod 512 has the mating part that is arranged in the groove 524.Described moving part 45 is one to have the speed ring 45 of internal tooth 451 and end tooth 452, and the circular groove 453 that holds steel wire cover 513 is set on it.
When electromagnet is switched on, iron-core coil 523 will produce magnetic and attract with one of them of two permanent magnets 521.When if the electric current of electromagnet is oppositely connected, 523 of iron cores can produce with another permanent magnet 521 and attract, thereby it is mobile together to drive push rod 512, steel wire cover 513 and speed ring 45.Top gear state shown in Fig. 3 a, this moment, iron core 523 was attracted by one of them permanent magnet 521, and is corresponding, and the internal tooth 451 of speed ring 45 meshes with the first planet carrier 41 and the second planet wheel 42 simultaneously, and this moment, the output speed of gear drive 4 was higher; Bottom gear state shown in Fig. 3 b, this moment, iron core 523 was attracted by another permanent magnet 521, and corresponding, the internal tooth 451 of speed ring 45 and second is taken turns 42 engagements, simultaneously whirl-stop device 44 engagements on its end tooth 452 and the tool housing, this moment, the output speed of gear drive 4 was lower.
Shown in Fig. 4 a and Fig. 4 b, it is drive unit second embodiment's of speed change tool control system of the present invention structural representation.The electromagnet apparatus that adopts among described drive unit the first embodiment in front its objective is that the current direction by the control electromagnet changes polarity, and it is mobile between high low gear to drive speed ring 45.And in the present embodiment, use an actuating motor 525 instead and be used as actuator, be used as driving component 51 with a screw rod 515, tapped push rod 512 and steel wire cover 513, positive and negative transferring by actuating motor 525 drives the movement of push rod 512 on screw rod 515, thereby it is mobile together to drive speed ring 45, realizes the engagement of high low gear.
With further reference to Fig. 5, be the control system functional-block diagram of speed change tool of the present invention please.Described control system 8 comprises a processing unit 3 and drive unit 5.Wherein processing unit 3 comprises processor 30 and correlated inputs/output circuit.One signal generator 35 is connected with processor, and is provided with functional switch 36 between speed change tool main circuit power 1 and processor 30.Drive unit 5 is controlled by the control signal of processor 30 outputs, in order to carry out the automaitc shfit action, simultaneously, drive unit can feed back to gear signal processor 30.In the speed change tool operating process, according to operator's custom or the actual demand of application, the operator can select functional switch 36 closures, thereby start the Automatic Shift Control function of control system 8, in other words, this functional switch 36 provides the switching function between speed change tool 9 manual modes and the automatic mode.When if operation only needs wherein some shift functions, but break function switch 36 then carries out gear-change operation with manual mode to speed change tool.
When speed change tool 9 was in automatic mode, the processor 30 of control system 8 detected the variation of the physical parameter of speed change tool, compares with predefined value, judges whether need to begin to carry out automaitc shfit.Those skilled in the art also external discharge circuit of available processors replace processor 30 to compare computing.Physical parameter described here can be electric parameter, such as current of electric, voltage, also can be other parameters, such as the stress of motor or output shaft rotating speed, mechanical parts, moment of torsion etc.In some use occasion, the operator perhaps wishes still can to decide in its sole discretion the time point of gear shift under automatic mode, also can manually input a control signal by signal generator 35, makes control system immediately realize automaitc shfit.
In the automaitc shfit process, control unit 3 sends control signal to drive unit 5, and actuator in the drive unit 5 52 drives driving components 51 and moves, and then the moving part 45 in the gear drive 4 is moved to low gear from high gear.In this process, if motor 2 is still being given gear drive 4 transmitting torques, be that moving part 45 still has certain rotating speed, and need after mobile and 44 engagements of static whirl-stop device (ginseng Fig. 3 b), will cause the problem that occurs between moving part 45 and the whirl-stop device 44 to beat tooth and can't mesh smoothly.The present invention has proposed three kinds of solutions for addressing this problem, and below describes respectively.
With reference to Fig. 6, it is control unit first embodiment's functional-block diagram of speed change tool control system of the present invention.Wherein processing unit 3 comprises processor 30, VM 31, load detecting circuit 32, drive unit control circuit 33 and gear signal feeder loop 34.In the main circuit of speed change tool 9, an electric switch 10(further is set such as field effect transistor, controllable silicon or relay etc. between power supply and the motor), this electric switch 10 is by VM 31 control on off operating modes.
When speed change tool is started shooting, 10 hysteresis a period of time (such as 0.1s) the again conductings of processor 30 control apparatus switches in the period, are at first sent instruction to drive unit control circuit 33 at this section, oppositely switch on for electromagnet, drive unit 5 is reset to the high gear state.Then power supply 1 is powered to allow motor 2 startups and be in top gear and is normally moved.This moment, output shaft 6 drive working heads (not shown) began to carry out Drilling operation.Load detecting circuit 32 is with the load current of characteristic frequency collection motor, and 30 motor load value and predetermined current values that load detecting circuit 32 is collected of processor compare.If the situation of predetermined current value appears exceeding for a long time in the motor load electric current, illustrate that then the working head load is large, instrument need to change to bottom gear high pulling torque output state.This moment, processor 30 sent first instruction to VM 31, and control apparatus switch 10 is cut off the electricity supply and made motor stalling, the current of electric vanishing.This moment, the speed of speed ring also can be reduced to zero rotating speed.
Afterwards, processor sends instruction to drive unit control circuit 33, and the electromagnet of drive unit 5 is oppositely switched on, and iron core 523 drives speed ring 45 and is moved, thereby realizes that high gear is to the conversion of low gear.Because before gear shift, the rotating speed of speed ring 45 has been zero, is converted in the bottom gear process at its gear, and its end tooth 452 is state of rest with the internal tooth 441 of whirl-stop device 44, therefore can enter very smoothly the engaging position, and avoid beating the generation of tooth problem.
When the gear signal feeder loop 34 in the control unit 3 contacts with another permanent magnet 521 at the iron core 523 that detects electromagnet (those skilled in the art also can be designed to detect the engaging position relation between speed ring and the gear assembly), then represent speed ring 45 and successfully moved to low gear, processor then sends instruction to VM 31, make electric switch 10 conductings, power supply 1 recovers to motor 2 power supplies, and motor enters low-speed big output services state.
Need to prove, speed change tool is in the high speed normal course of operation, because of some special circumstances the in short-term heavy load value appearance of motor load electric current appears often, in order to prevent the situation of gear shift action false tripping, can solve by the program of setting processor, only have the current of electric that collects when load detecting circuit to exceed the predefined value regular hour when (be 0.5s such as design time), just begin to carry out gear shift control.Certainly, also can directly functional switch 36 be cut off and directly select manual mode, the false tripping gear shift is moved when avoiding not wishing automaitc shfit.Default current value then decides according to the top gear maximal work current value of instrument, in the present embodiment take 30 amperes as predefined value.In addition, if the operator wishes starting sometime automaitc shfit, even if the motor load electric current does not also exceed predefined value, also can input a control signal by the signal generator 35 on the processor 30, thereby immediately begin to carry out the automaitc shfit action.Further, processor also can be designed to have learning functionality, that is, the motor load electric current when the record operator passes through the signal generator input control signal at every turn is as the reference of initialization system predefined value.
Above-mentioned before automaitc shfit control unit 3 control apparatus switches 10 allow just a kind of mode of execution wherein of motor 2 temporary stoppages.Under normal conditions, if when the rotating speed of motor 2 is reduced to very little degree, the problem of tooth can not appear beating in the engagement of speed ring 45 and whirl-stop device 44 equally in the gearshift procedure.With reference to shown in Figure 7, be control unit second embodiment of speed change tool control system of the present invention.In the main circuit of speed change tool 9, electric switch 10 usefulness field effect transistors 11 between power supply and the motor replace, when needs carry out automaitc shfit, VM 31 provides motor corresponding operating voltage by control field effect transistor 11, to reach the purpose that reduces motor speed, thereby speed ring 45 and the speed of whirl-stop device 44 are mated mutually, prevent from beating the generation of tooth phenomenon.Here the speed of indication is mutually mated and is referred to that speed ring 45 and the relative velocity of whirl-stop device 44 reach a scope that can make the two enter smoothly the engaging position.
Equally, as shown in Figure 8, be control unit the 3rd embodiment of speed change tool control system of the present invention.One clutch 12 is set between motor 2 and gear drive 4, this clutch 12 of VM 31 controls reduces the moment of torsion that motor 2 is passed to gear drive 4, also can realize the purpose of velocity modulation, namely before speed ring 45 moves to the position of meshing with whirl-stop device 44, reduce the rotating speed of speed ring 45, with the problem that prevents that tooth is beaten in appearance in the engagement process.
The embodiment of comprehensive above-mentioned several velocity modulation, can find out that spirit of the present invention mainly is: control unit 3 is when detecting motor 2 loads and exceed predefined value for a long time, 31 pairs of moving parts of Negotiation speed modulation circuit 45 carry out velocity modulation with gear assembly, when the relative velocity of the two mates mutually, enter again next gear engagement, in other words, control unit is adjusted first the moment of torsion that motor passes to gear drive, accessory drive is realized automaitc shfit again, thereby effectively avoids the tooth problem of beating in the automaitc shfit process.
It is worth mentioning that in addition, after the automaitc shfit release, power supply 1 recovers to motor 2 power supplies, motor 2 is from the utmost point slow-speed of revolution or even the zero instantaneous low rotation speed large torque output state that enters of rotating speed state, can cause a very large starting torque to the operator, if it is not tight that the operator grips, even can cause instrument to get loose and cause danger from operator's hand.Be head it off, can be by control field effect transistor 11(ginseng Fig. 7) realize the soft start of motor 2.Particularly, after automaitc shfit finishes, when recovering motor 2 power supply, control unit 3 is (such as 0.6s) within the time period of a setting, control field effect transistor by modes such as fixed frequency modulated PWM or Fixed width frequency modulation, increase gradually the load voltage of motor 2, slowly recover motor 2 to operating voltage, thereby avoid the impact sensation brought to the operator of starting electrical machinery of moment after the gear shift.
Use the disclosed above structure, the shifting control method of speed change tool of the present invention is, provide a kind of speed change tool to comprise the gear drive 4 of power supply 1, motor 2, output shaft 6, connection motor and output shaft, and control system 8, wherein gear drive 4 comprises at least one gear assembly and a moving part, and the described moving part engagement system different from gear assembly can provide output shaft different output gears; Control system 8 is comprised of control unit 3 and drive unit 5, and this shifting control method comprises:
1) load torque detecting step: described control system detects the speed change tool physical parameter, such as detecting motor 2 load currents, voltage or output shaft rotating speed, judges the working state of speed change tool;
2) automaitc shfit step: the moving part of control gear driving mechanism moves to another gear.
Further comprise a velocity modulation step between described load torque detection and the automaitc shfit step, when the load torque of described output shaft changes to predetermined value, described control unit is adjusted the moment of torsion that motor passes to gear drive, the rotating speed of moving part and gear assembly is mated mutually, and namely speed ring 45 reaches a scope that can make the two enter smoothly the engaging position with the relative velocity of whirl-stop device 44.
In the described velocity modulation step, reduce the moment of torsion that motor passes to gear drive by the input voltage that reduces motor.
After the automaitc shfit step, further comprise moving part gear detecting step, to confirm that moving part has moved to another gear.
After the velocity modulation step, also comprise a soft starter for motor step, control system input voltage of expanded motor progressively in default time range makes motor recover moment of torsion output.
Gear drive among the present invention and moving part thereof are not limited to the structure that present embodiment discloses, gear meshing relation when particularly being not limited to present embodiment high speed gear and bottom gear, gear drive in the prior art is various, announce No. 6796921 such as U. S. Patent and disclosed multiple gear drive, meshing relation when its top gear and bottom gear is different, but those of ordinary skills are easy to inventive concept according to the present invention various gear drives is applied to the present invention.
Claims (11)
1. speed change tool, it is characterized in that: this instrument comprises
Casing;
Motor is arranged in the casing, and outputting rotary power;
Output shaft;
Gear drive, be arranged between motor and the output shaft and be delivered on the output shaft with the rotation output with motor, it comprises at least one group of train of gearings and a moving part, described moving part can move between primary importance and the second place, and when primary importance and the second place, described moving part cooperates respectively by different way with described train of gearings, correspondingly with the rotating speed of low reduction speed ratio and high reduction speed ratio output motor, thereby described moving part has rotational speed with respect to casing to gear drive when primary importance;
Control system cooperates with described moving part, is used for the parameter that sensing characterizes the output shaft load, after described parameter reaches predetermined value, impels described moving part to move to the second place from primary importance, and reduces the described rotational speed of moving part.
2. speed change tool according to claim 1 is characterized in that: the described rotational speed that control system reduces moving part comprises rotational speed is reduced to zero.
3. speed change tool according to claim 1, it is characterized in that: control system reduces first the described rotational speed of moving part, then impels described moving part to move to the second place from primary importance.
4. speed change tool according to claim 1, it is characterized in that: described train of gearings comprises planetary gear train, described planetary gear train comprises several rows star-wheel and the planet carrier that is used for supporting planet wheel.
5. speed change tool according to claim 4, it is characterized in that: described moving part comprises ring gear, when primary importance, described ring gear simultaneously and described planet wheel and planet carrier engagement, gear drive is with the rotating speed of low reduction speed ratio output motor; When the second place, described ring gear only meshes with described planet wheel, and gear drive is with the rotating speed of high reduction speed ratio output motor.
6. speed change tool according to claim 1, it is characterized in that: described gear drive comprises the whirl-stop device that is fixedly installed with respect to casing, when the second place, described moving part and described whirl-stop device cooperate and keep relative fixing with casing.
7. speed change tool according to claim 1, it is characterized in that: described control system comprises electronic control unit and drives described moving part moves to the second place from primary importance drive unit; Described electronic control unit is used for the described parameter of sensing, accessory drive and impels the reduction of described rotational speed.
8. speed change tool according to claim 7, it is characterized in that: described drive unit comprises electromagnet apparatus, described electromagnet apparatus has the push rod with the relative secure fit of moving part; Described electronic control unit is used for after described parameter reaches predetermined value, applies electric current and impel described push rod Linear-moving for described electromagnet apparatus, moves to the second place thereby drive described moving part from primary importance.
9. speed change tool according to claim 7, it is characterized in that: described electronic control unit comprises processor.
10. speed change tool according to claim 1 is characterized in that: the described rotational speed that described control system reduces moving part is to realize by the rotational speed that reduces motor.
11. speed change tool according to claim 1 is characterized in that: the parameter of described sign output shaft load is the current value of motor.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710131762 CN101377229B (en) | 2007-08-29 | 2007-08-29 | Speed changing tool and speed changing control method thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710131762 Division CN101377229B (en) | 2007-08-29 | 2007-08-29 | Speed changing tool and speed changing control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102937166A true CN102937166A (en) | 2013-02-20 |
| CN102937166B CN102937166B (en) | 2015-09-09 |
Family
ID=40420907
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710131762 Active CN101377229B (en) | 2007-08-29 | 2007-08-29 | Speed changing tool and speed changing control method thereof |
| CN201210443650.4A Active CN102937166B (en) | 2007-08-29 | 2007-08-29 | Speed change tool |
| CN201210443649.1A Active CN102935637B (en) | 2007-08-29 | 2007-08-29 | Speed change tool |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710131762 Active CN101377229B (en) | 2007-08-29 | 2007-08-29 | Speed changing tool and speed changing control method thereof |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210443649.1A Active CN102935637B (en) | 2007-08-29 | 2007-08-29 | Speed change tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN101377229B (en) |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101637903B (en) * | 2008-07-31 | 2011-12-07 | 苏州宝时得电动工具有限公司 | Speed changer |
| CN101761615B (en) * | 2008-10-30 | 2012-03-28 | 苏州宝时得电动工具有限公司 | Speed change tool |
| CN102126202B (en) * | 2010-01-14 | 2013-03-06 | 苏州宝时得电动工具有限公司 | Electric tool and transmission device thereof |
| CN102126034B (en) * | 2010-01-14 | 2013-01-09 | 苏州宝时得电动工具有限公司 | Electric tool |
| DE102010001967A1 (en) | 2010-02-16 | 2011-08-18 | Robert Bosch GmbH, 70469 | Operating element for hand tool machine |
| JP5534327B2 (en) * | 2010-05-19 | 2014-06-25 | 日立工機株式会社 | Electric tool |
| JP5075233B2 (en) * | 2010-07-29 | 2012-11-21 | パナソニックＥｓパワーツール株式会社 | Electric tool |
| US20120024552A1 (en) * | 2010-07-30 | 2012-02-02 | Hitachi Koki Co., Ltd. | Inverter Device and Electrical Power Tool |
| JP2012045665A (en) * | 2010-08-26 | 2012-03-08 | Toyota Motor Corp | Impact tightening tool |
| DE102010063173A1 (en) * | 2010-12-15 | 2012-06-21 | Hilti Aktiengesellschaft | A bolt gun and method for operating a bolt gun |
| CN102562958B (en) * | 2010-12-29 | 2014-07-02 | 苏州宝时得电动工具有限公司 | Speed shifting tool and speed shifting control method thereof |
| CN102562959A (en) * | 2010-12-30 | 2012-07-11 | 苏州宝时得电动工具有限公司 | Speed change tool |
| CN102528123B (en) * | 2010-12-30 | 2014-02-26 | 苏州宝时得电动工具有限公司 | Speed changing tool |
| JP5331136B2 (en) * | 2011-02-07 | 2013-10-30 | パナソニック株式会社 | Electric tool |
| JP5514139B2 (en) * | 2011-02-22 | 2014-06-04 | パナソニック株式会社 | Electric tool |
| JP5963136B2 (en) * | 2012-09-13 | 2016-08-03 | パナソニックＩｐマネジメント株式会社 | Electric tool |
| WO2014133978A1 (en) | 2013-02-26 | 2014-09-04 | Apex Brands, Inc. | Low pressure shut off for a pneumatic tool |
| CN104019218B (en) * | 2014-05-26 | 2016-05-11 | 西安交通大学 | A kind of variable-speed controller |
| CN104617853A (en) * | 2014-10-28 | 2015-05-13 | 常州格力博有限公司 | Pruning machine speed regulation control method |
| US11590633B2 (en) * | 2016-02-24 | 2023-02-28 | HYTORC Division Unex Corporation | Apparatus for tightening threaded fasteners |
| CN108112356A (en) * | 2016-11-28 | 2018-06-05 | 苏州宝时得电动工具有限公司 | Electric tool |
| US11097405B2 (en) * | 2017-07-31 | 2021-08-24 | Ingersoll-Rand Industrial U.S., Inc. | Impact tool angular velocity measurement system |
| CN113854873B (en) * | 2020-06-30 | 2023-08-18 | 莱克电气绿能科技(苏州)有限公司 | Low-cost low-rotation-speed high-torque output food processor |
| CN111993328B (en) * | 2020-09-01 | 2021-10-08 | 宁波汉浦工具有限公司 | Hand-held electric screwdriver |
| EP4008932B1 (en) * | 2020-12-04 | 2023-11-15 | Ningbo Geely Automobile Research & Development Co. Ltd. | A transmission |
| CN113134720B (en) * | 2021-04-09 | 2022-02-22 | 昆山市嘉驭汽车饰件有限公司 | Arranging device and method for automatic nailing of automobile wrapping layer |
| CN113787492A (en) * | 2021-09-17 | 2021-12-14 | 北京卫星环境工程研究所 | Electric tool for space on-orbit maintenance |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2101970U (en) * | 1991-09-07 | 1992-04-15 | 孙慎建 | Gear protector |
| DE10029133A1 (en) * | 2000-06-14 | 2002-01-03 | Hilti Ag | Electric hand tool device with tool |
| DE10156392B4 (en) * | 2001-11-16 | 2008-04-10 | Robert Bosch Gmbh | Gear shift device for a multistage transmission of a power tool |
| DE10308272B4 (en) * | 2002-03-05 | 2012-05-24 | Makita Corp. | screwdriver |
| DE102004012433A1 (en) * | 2004-03-13 | 2005-09-29 | Robert Bosch Gmbh | Hand tool |
| CN2709231Y (en) * | 2004-05-21 | 2005-07-13 | 侯书怀 | Vehicle automatic clutch replacing apparatus |
| CN1265938C (en) * | 2004-10-11 | 2006-07-26 | 李维谦 | Logical control method for digital control machine tool main shaft speed change |
| CN1891412A (en) * | 2005-06-28 | 2007-01-10 | 苏州宝时得电动工具有限公司 | Motioncontrol device for electric tool |
| CN2924187Y (en) * | 2005-12-23 | 2007-07-18 | 胡济荣 | Operating device for gear-shifting mechanism |
| CN2934776Y (en) * | 2006-07-28 | 2007-08-15 | 苏州宝时得电动工具有限公司 | Variable-speed tool |
| CN201093036Y (en) * | 2007-08-31 | 2008-07-30 | 苏州宝时得电动工具有限公司 | Speed changing tool |
-
2007
- 2007-08-29 CN CN 200710131762 patent/CN101377229B/en active Active
- 2007-08-29 CN CN201210443650.4A patent/CN102937166B/en active Active
- 2007-08-29 CN CN201210443649.1A patent/CN102935637B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102935637A (en) | 2013-02-20 |
| CN102937166B (en) | 2015-09-09 |
| CN102935637B (en) | 2016-02-17 |
| CN101377229A (en) | 2009-03-04 |
| CN101377229B (en) | 2012-12-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102937166A (en) | Speed change tool | |
| CN201093036Y (en) | Speed changing tool | |
| US8346446B2 (en) | Clutchless transmission apparatus for controlling gear-position shifting and control method thereof | |
| CN101637906A (en) | Speed changer | |
| JP4553388B2 (en) | Control device for hybrid electric vehicle | |
| CN101637902B (en) | Speed changer | |
| KR20140141248A (en) | Apparatus for returning parimary mode of transmission | |
| CN201300408Y (en) | Speed change tool | |
| CN101761615B (en) | Speed change tool | |
| CN101786268A (en) | Electric tool | |
| JP5963136B2 (en) | Electric tool | |
| CN102935636B (en) | Speed change tool | |
| CN101637901B (en) | Speed changer | |
| CN201300407Y (en) | Speed change tool | |
| CN101637904B (en) | Speed changer | |
| CN201353657Y (en) | Electric tool | |
| KR101412967B1 (en) | Capstan Hoist | |
| CN201300410Y (en) | Speed change tool | |
| CN102562958B (en) | Speed shifting tool and speed shifting control method thereof | |
| CN201300409Y (en) | Speed change tool | |
| CN209604530U (en) | Retarder gearshift based on electromagnetic clutch | |
| US6933691B2 (en) | Control system for a shifting mechanism with a DC motor | |
| CN101637903A (en) | Speed changer | |
| JP4372003B2 (en) | Single unit motor / generator dual function device | |
| CN201309145Y (en) | Gear-shift tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |