CN202360744U - Shifting structure of dual-speed gear box for electric tool - Google Patents
Shifting structure of dual-speed gear box for electric tool Download PDFInfo
- Publication number
- CN202360744U CN202360744U CN2011205044775U CN201120504477U CN202360744U CN 202360744 U CN202360744 U CN 202360744U CN 2011205044775 U CN2011205044775 U CN 2011205044775U CN 201120504477 U CN201120504477 U CN 201120504477U CN 202360744 U CN202360744 U CN 202360744U
- Authority
- CN
- China
- Prior art keywords
- gear
- gearshift
- shifting
- box
- teeth
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Structure Of Transmissions (AREA)
Abstract
The utility model provides a shifting structure of a dual-speed gear box for an electric tool. The shifting structure comprises a gear box. A first planet wheel set, a shifting planet wheel set and a second planet wheel set are mounted in the gear box; inner transition gear teeth are further arranged on the inner wall of a first inner gear ring of the first planet wheel set; first shifting outer wheel teeth are arranged at the periphery of a shifting inner gear ring of the shifting planet wheel set; and second shifting outer wheel teeth are arranged on the periphery of a shifting planet frame of the shifting planet wheel set. The shifting structure is characterized by further comprising a shifting push button capable of moving forwards and backwards; a push pin is fixed on the shifting push button; and the lower end of the push pin is spliced in an annular groove at the periphery of the shifting inner gear ring. According to the shifting structure provided by the utility model, the shifting push button is connected with the shifting inner gear ring by using the push pin, and the lower end of the push pin is spliced in the annular groove at the periphery of the shifting inner gear ring, so that the push pin drives the shifting inner gear ring to move forwards and backwards and does not influence the rotation of the shifting inner gear ring simultaneously. The shifting structure provided by the utility model has the advantages of reasonable structural design. Furthermore, a manner of a shifting steel wire used in the conventional shifting structure is omitted, so that the shifting structure is convenient to assembly and saves machining and assembling costs.
Description
Technical field
The utility model relates to a kind of electric tool with the double speed gear structure of shifting gears.
Background technique
The drive part power section of electric tool is a motor, and the output shaft of motor is connected with output shaft through the planet wheel speed reducer, and output shaft is in order to install hand tools, and electrical power drives the working head rotation through the planet wheel speed reducer.
For the rotating speed that makes electric tool is realized regulating; We can adopt the two-speed gear box structure; Comprise gear-box 1 ' and gear box cover; First planetary gear set, gear-shift planet wheels and second planetary gear set are installed in the gear-box; The gear-shift planet wheels and are equipped with first sun gear on the output shaft of motor between first planetary gear set and second planetary gear set, the sun gear in the gear-shift planet wheels is arranged on the planet carrier of first planetary gear set and can be with the planet carrier rotation of first planetary gear set; Sun gear in second planetary gear set is arranged on the gear-shift planet frame of gear-shift planet wheels and can be with the planet carrier rotation of gear-shift planet wheels, and output shaft is installed on the planet carrier of second planetary gear set through strong groove structure.The first ring gear inwall of first planetary gear set also is provided with the gear teeth in the transition; The periphery of the gearshift ring gear of gear-shift planet wheels is provided with the outer gear teeth of first gearshift; The periphery of the gear-shift planet frame of gear-shift planet wheels is provided with the outer gear teeth of second gearshift; Moving forward and backward of gearshift ring gear through the gear-shift planet wheels, and gear teeth meshing in the transition of the outer gear teeth of gearshift that make the gearshift ring gear and first ring gear of first planetary gear set, or make that the gear teeth mesh outside the gearshift of the gear teeth and gear-shift planet frame in the gearshift of gearshift ring gear; To realize the differential conversion of gear-box, reach the adjusting that gearshift realizes the output shaft rotating speed.
Like Fig. 9, shown in 10; In the present this two-speed gear box structure gearshift ring gear move through the gearshift push away turn round 2 ' with the gearshift steel wire 3 ' realize; Gearshift pushes away to be turned round 2 ' to be arranged on gear-box 1 ' outside and can move forward and backward, and gearshift steel wire 3 ' is installed in gearshift and pushes away and turns round 2 ' below, and insert to the sidewall that extends below from gear-box 1 ' at the two ends of gearshift steel wire 3 '; And link to each other with the gearshift external toothing, the middle part 31 ' of the steel wire 3 ' both sides of shifting gears is rotatably connected on the two side of gear-box 1 '.
This gearshift pushes away the mode of turning round through the gearshift steel wire and drives the structure more complicated that the gearshift external toothing moves, and inconvenience is installed, and the interior gear teeth of first ring gear of other first planetary gear set are working of plastics, and are easy to wear.
Summary of the invention
The utility model technical problem to be solved is to provide a kind of electric tool simple in structure, easy for installation with the double speed gear structure of shifting gears to above-mentioned existing technology present situation.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: a kind of electric tool is with the double speed gear structure of shifting gears; Comprise gear-box; First planetary gear set, gear-shift planet wheels and second planetary gear set are installed in the gear-box; The gear-shift planet wheels are between first planetary gear set and second planetary gear set, and the gearshift sun gear in the gear-shift planet wheels is arranged on first planet carrier of first planetary gear set, and second sun gear in second planetary gear set is arranged on the gear-shift planet frame of gear-shift planet wheels; The first ring gear inwall of first planetary gear set also is provided with the gear teeth in the transition; The periphery of the gearshift ring gear of gear-shift planet wheels is provided with the outer gear teeth of first gearshift, and the periphery of the gear-shift planet frame of gear-shift planet wheels is provided with the outer gear teeth of second gearshift, moves gear teeth meshing in the transition that can make the outer gear teeth of gearshift and first ring gear behind the gearshift ring gear; The reach of gearshift ring gear can make the interior gear teeth and the outer gear teeth engagement of second gearshift of gearshift ring gear; It is characterized in that: comprising also that the gearshift that can move forward and backward pushes away turns round, and gearshift pushes away to turn round and is fixed with pushing pin, and the lower end of pushing pin is plugged in the circular groove of gearshift ring gear periphery.
Above-mentioned gearshift pushes away to turn round and is positioned at gear-box, and gearshift pushes away to turn round has upwardly extending promotion post, has on the sidewall of gear-box and supplies to promote the groove that post exposes outside gear-box.This structure pushes away gearshift to turn round and places in the gear-box and built-in, makes gearshift push away to turn round not fragile, promotes in addition that post exposes and conveniently promotes gearshift and push away and turn round.
The interior gear teeth of above-mentioned first ring gear are metal-toothed.The interior gear teeth of such first ring gear are not easy to wear, and it is lighter to shift gears.
Above-mentioned gearshift pushes away the front end of turning round and is connected with circle portion, and said pushing pin has a plurality of, and each pushing pin was plugged in the circle portion along the circle spacing.Pushing pin has a plurality of, can more steadily promote ring gear.
Above-mentioned circle portion periphery is provided with a plurality of guide pads to outer lug, and the inwall place of said gear-box is provided with the guiding groove that a plurality of and said guide pad matches.Cooperate with the guiding of guide pad through guiding groove, guarantee that gearshift pushes away that to turn round be to move horizontally, and can not rock.
Compared with prior art; The advantage of the utility model is: this gearshift structure employing pushing pin pushes away gearshift to turn round with the ring gear of shifting gears and links to each other; And the lower end of pushing pin is plugged in the circular groove of gearshift ring gear periphery; When pushing pin drive gearshift ring gear is moved forward and backward, can not influence the gearshift ring gear again and rotate reasonable in design; Adopt the mode of gearshift steel wire to drive the gearshift ring gear in addition in the existing gearshift of the cancellation structure and move forward and backward, assemble more conveniently, saved processing and assembly cost.
Description of drawings
Fig. 1 is the utility model embodiment's a perspective view;
Fig. 2 is the utility model embodiment's sectional view (gearshift pushes away and turns round retrude);
Fig. 3 is the utility model embodiment's sectional view (gearshift pushes away and turns round preceding shifting state);
Fig. 4 pushes away the installation perspective view of turning round with pushing pin for gearshift among the utility model embodiment;
Fig. 5 is the perspective view of gearshift ring gear among the utility model embodiment;
Fig. 6 is the perspective view of the utility model embodiment middle gear case;
Fig. 7 is the perspective view of first ring gear among the utility model embodiment;
Fig. 8 is the perspective view of gear-shift planet frame among the utility model embodiment;
Fig. 9 is the front view (gearshift pushes away and turns round retrude) of gearshift structure in the background technique;
Figure 10 is the front view (gearshift pushes away and turns round preceding shifting state) of gearshift structure in the background technique.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Shown in Fig. 1～8, be a preferred embodiment of the utility model.
A kind of electric tool comprises gear-box 1 with the double speed gear structure of shifting gears, and the rear end of gear-box 1 is provided with gear box cover 7 sealings.First planetary gear set, gear-shift planet wheels and second planetary gear set are installed in the gear-box 1, and the gear-shift planet wheels are between first planetary gear set and second planetary gear set.First planetary gear set comprises first sun gear 21, first planet carrier 22, first ring gear 23, first planet wheel 24; The gear-shift planet wheels comprise gearshift sun gear 31, gear-shift planet frame 32, gearshift ring gear 33, gear-shift planet wheel 34; Second planetary gear set comprises second sun gear 41, second planet carrier 42, second ring gear 43, second planet wheel 44.
Gearshift sun gear 31 in the gear-shift planet wheels is arranged on first planet carrier 22 of first planetary gear set; Second sun gear 41 in second planetary gear set is arranged on the gear-shift planet frame 32 of gear-shift planet wheels; The periphery of the gearshift ring gear 33 of gear-shift planet wheels is provided with the outer gear teeth 331 of first gearshift; The periphery of the gear-shift planet frame 32 of gear-shift planet wheels is provided with the outer gear teeth 321 of second gearshift; Move the gear teeth 321 engagements in the transition that can make the outer gear teeth 321 of gearshift and first ring gear 23 behind the gearshift ring gear 33; The interior gear teeth 231 of first ring gear 23 are metal-toothed, and the reach of gearshift ring gear 33 can make the interior gear teeth and the outer gear teeth 321 engagements of second gearshift of gearshift ring gear 33.
Comprising also that the gearshift that can move forward and backward pushes away turns round 5, and gearshift pushes away to be turned round 5 and be positioned at gear-box 1, and gearshift pushes away to turn round has upwardly extending promotion post 51 on 5, have on the sidewall of gear-box 1 to supply to promote the groove 11 that post 51 exposes outside gear-box 1; Gearshift pushes away to turn round and is fixed with pushing pin 6 on 5, and the lower end of pushing pin 6 is plugged in the circular groove 332 of gearshift ring gear 33 peripheries.
Gearshift pushes away to be turned round 5 front end and is connected with circle portion 52, and pushing pin 6 has a plurality of, and each pushing pin 6 was plugged in the circle portion 52 along the circle spacing.Circle portion 52 peripheries are provided with a plurality of guide pads 53 to outer lug, and the inwall place of gear-box 1 is provided with the guiding groove 12 that a plurality of and said guide pad 53 matches.
During use, the output shaft 8 of electric tool is installed on second planet carrier 42 of second planetary gear set through strong groove structure, and can be with 42 rotations of second planet carrier, and first sun gear 21 on first planetary gear set is installed on the output shaft of motor.
This gearshift structure employing pushing pin pushes away gearshift to turn round with the ring gear of shifting gears and links to each other; And the lower end of pushing pin is plugged in the circular groove of gearshift ring gear periphery; When pushing pin drive gearshift ring gear is moved forward and backward, can not influence the gearshift ring gear again and rotate reasonable in design; Adopt the mode of gearshift steel wire to drive the gearshift ring gear in addition in the existing gearshift of the cancellation structure and move forward and backward, assemble more conveniently, saved processing and assembly cost.
Claims (5)
1. an electric tool is with the double speed gear structure of shifting gears; Comprise gear-box (1); First planetary gear set, gear-shift planet wheels and second planetary gear set are installed in the gear-box (1); The gear-shift planet wheels are between first planetary gear set and second planetary gear set; And the gearshift sun gear (31) in the gear-shift planet wheels is arranged on first planet carrier (22) of first planetary gear set; Second sun gear (41) in second planetary gear set is arranged on the gear-shift planet frame (32) of gear-shift planet wheels, and first ring gear (23) inwall of first planetary gear set also is provided with the gear teeth (231) in the transition, and the periphery of the gearshift ring gear (33) of gear-shift planet wheels is provided with the first gearshift outer gear teeth (331); The periphery of the gear-shift planet frame (32) of gear-shift planet wheels is provided with the second gearshift outer gear teeth (321); Move behind the gearshift ring gear (33) and can make the gear teeth (231) engagement in the outer gear teeth of gearshift (321) and the transition of first ring gear (23), the reach of gearshift ring gear (33) can make the interior gear teeth and second of gearshift ring gear (33) the outer gear teeth (321) of shifting gears mesh, and it is characterized in that: comprising also that the gearshift that can move forward and backward pushes away turns round (5); Gearshift pushes away to turn round and is fixed with pushing pin (6) on (5), and the lower end of pushing pin (6) is plugged in the circular groove (333) of gearshift ring gear (33) periphery.
2. electric tool according to claim 1 is with the double speed gear structure of shifting gears; It is characterized in that: said gearshift pushes away to be turned round (5) and is positioned at gear-box (1); Gearshift pushes away to turn round has upwardly extending promotion post (51) on (5), have on the sidewall of gear-box (1) to supply to promote the groove (11) that post (51) exposes outside gear-box (1).
3. electric tool according to claim 1 is characterized in that with the double speed gear structure of shifting gears: the interior gear teeth (231) of said first ring gear (23) are metal-toothed.
4. electric tool according to claim 1 is with the double speed gear structure of shifting gears, and it is characterized in that: said gearshift pushes away the front end of turning round (5) and is connected with circle portion (52), and said pushing pin (6) has a plurality of, and each pushing pin (6) was plugged in the circle portion (52) along the circle spacing.
5. electric tool according to claim 4 is with the double speed gear structure of shifting gears; It is characterized in that: said circle portion (52) periphery is provided with a plurality of guide pads to outer lug (53), and the inwall place of said gear-box (1) is provided with the guiding groove (12) that a plurality of and said guide pad (53) matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205044775U CN202360744U (en) | 2011-12-07 | 2011-12-07 | Shifting structure of dual-speed gear box for electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205044775U CN202360744U (en) | 2011-12-07 | 2011-12-07 | Shifting structure of dual-speed gear box for electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202360744U true CN202360744U (en) | 2012-08-01 |
Family
ID=46571932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205044775U Expired - Fee Related CN202360744U (en) | 2011-12-07 | 2011-12-07 | Shifting structure of dual-speed gear box for electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202360744U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090395A (en) * | 2015-09-21 | 2015-11-25 | 宁波夏厦齿轮有限公司 | Precise planetary reducer |
| CN105697692A (en) * | 2016-04-08 | 2016-06-22 | 群胜科技（苏州）有限公司 | Electric tool gear case speed change structure |
| CN106914847A (en) * | 2015-12-28 | 2017-07-04 | 南京德朔实业有限公司 | Torque output tool |
| CN107020604A (en) * | 2017-06-01 | 2017-08-08 | 宁波汉浦工具有限公司 | A kind of brushless electric tool |
-
2011
- 2011-12-07 CN CN2011205044775U patent/CN202360744U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090395A (en) * | 2015-09-21 | 2015-11-25 | 宁波夏厦齿轮有限公司 | Precise planetary reducer |
| CN106914847A (en) * | 2015-12-28 | 2017-07-04 | 南京德朔实业有限公司 | Torque output tool |
| CN106914847B (en) * | 2015-12-28 | 2019-03-08 | 南京德朔实业有限公司 | Torque output tool |
| CN105697692A (en) * | 2016-04-08 | 2016-06-22 | 群胜科技（苏州）有限公司 | Electric tool gear case speed change structure |
| WO2017173884A1 (en) * | 2016-04-08 | 2017-10-12 | 王强 | Power tool gearbox transmission structure |
| CN107020604A (en) * | 2017-06-01 | 2017-08-08 | 宁波汉浦工具有限公司 | A kind of brushless electric tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202360744U (en) | Shifting structure of dual-speed gear box for electric tool | |
| PL2329983T3 (en) | Wheel drive assembly and a spindle carrier | |
| CN101691105A (en) | Split speed changer motor differential drive axle | |
| CN201501298U (en) | Split-type differential driving axle for speed changer and motor | |
| CN202468869U (en) | Mechanical speed change system | |
| CN211918383U (en) | Longitudinally-arranged two-gear integrated electric drive bridge behind motor | |
| CN205534053U (en) | Automatic transmission | |
| CN201745437U (en) | Novel electric drive axle | |
| CN201672004U (en) | One-gear speed changing device for electric bus or truck | |
| CN102817971B (en) | Two-way controllable ratchet clutch transmission device | |
| CN201313797Y (en) | Electric winch | |
| CN203395130U (en) | Gearbox capable of inputting with dual power | |
| CN202463920U (en) | Steering mechanism of small-sized hand farm machine | |
| CN106476979B (en) | Bicycle double-wheel driving device capable of realizing quick start | |
| CN208778666U (en) | A kind of planet carrier and epicyclic gearbox | |
| CN2830366Y (en) | Less tooth defference driving electric hoist reducer | |
| CN102606686A (en) | Transfer case of large tractor | |
| CN102221077A (en) | Automatic differential mechanism of change gear case for tractor | |
| KR101307576B1 (en) | Multistage type change speed actuator | |
| CN202065439U (en) | Automatic differential of transmission case of tractor | |
| CN201744888U (en) | Cutter drive device of metal cutting equipment | |
| CN202266644U (en) | Dual-drive transfer case | |
| CN105882882B (en) | Driving device for electric two-wheel vehicle | |
| CN208457126U (en) | The gear shifting structure of angular bit | |
| CN204369392U (en) | A kind of escalator or moving sidewalk and actuating device thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20151207 |
|
| EXPY | Termination of patent right or utility model |