CN201989132U - Multistage speed changing mechanism - Google Patents
Multistage speed changing mechanism Download PDFInfo
- Publication number
- CN201989132U CN201989132U CN2011201238451U CN201120123845U CN201989132U CN 201989132 U CN201989132 U CN 201989132U CN 2011201238451 U CN2011201238451 U CN 2011201238451U CN 201120123845 U CN201120123845 U CN 201120123845U CN 201989132 U CN201989132 U CN 201989132U
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- gear
- location
- rotating speed
- retainer ring
- planetary
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Abstract
The utility model discloses a multistage speed changing mechanism which comprises a first transmission gear device and a second transmission gear device, wherein the first transmission gear device comprises a transmission gear which can be controlled to move in an axial direction, and the second transmission gear device comprises a fixed ring which can be controlled to move in an axial direction and is provided with a first positioning raised part and a second positioning raised part; when a first inner teeth part is meshed with an outer teeth part, and the first positioning raised part is meshed with a first positioning raised rib, the rotating speed is shifted to a first rotating speed; when the first inner teeth part is meshed with the outer teeth part, and the second positioning raised part is meshed with a second positioning raised rib, the rotating speed is shifted to a second rotating speed; when the first inner teeth part is released from the outer teeth part, and the first positioning raised part is meshed with the first positioning raised rib, the rotating speed is shifted to a third rotating speed; and when the first inner teeth part is released from the outer teeth part, and the second positioning raised part is meshed with the second positioning raised rib, the rotating speed is shifted to a fourth rotating speed.
Description
Technical field
The utility model relates to a kind of gear that is used for electric tool, relates in particular to a kind of mechanism that four sections speed changing functions can be provided.
Background technology
Existingly be used to bore, the electric tool of work such as lock, its structure is that the power with motor is delivered to output shaft and outputting power via gear train; For the scope of application of realistic requirements of one's work with the expansion product, most electric tool is provided with speed changing function, with the rotating speed of control output shaft.But the gear of most of electric tool only can provide three sections speed changing functions, and three kinds of different rotating speeds promptly only can be provided, to obtain three kinds of different torsion; If will obtain four sections speed changing functions (obtaining four kinds of different rotating speeds and torsion), then mechanism is just too complicated, so that manufacturing cost is higher.
The utility model content
Main purpose of the present utility model, the assembly that is to solve four variator structures of existing electric tool is formed too complicated problems, uses the reduction manufacturing cost.
Feature of the present utility model, be that two change gear devices are combined, by the operation that cooperatively interacts of two change gear devices, make the output shaft of electric tool can obtain the function of output at a high speed, high speed output, the output of middle low speed and four kinds of different rotating speeds of low speed output.
Based on this, the multistage gear that the utility model provides includes a first stud gear device and a second stud gear device; Wherein, the first stud gear device further includes one first planetary plate, a plurality of first planetary gears, one has the change-speed gearing of the first internal tooth portion, one has second planetary plate of a plurality of outer toothed portion and one first pinion, with a plurality of second planetary gears, described a plurality of first planetary gear activity is located at this first planetary plate and is engaged in the first internal tooth portion of this change-speed gearing, described a plurality of second planetary gear activity is located at this second planetary plate and is meshed described first pinion, described change-speed gearing can controlledly move axially, make this internal tooth portion mesh or break away from the outer toothed portion of this second planetary plate, described first planetary plate connects an output shaft.The second stud gear device further comprises a third line astrolabe with a plurality of second location rib, one has the retainer ring of a plurality of first location teats and a plurality of second location teats, one has the internal gear of a plurality of first location rib and a plurality of second internal tooth portions, and a plurality of the third line star gears with second pinion, the activity of described the third line star gear is located at this third line astrolabe and is made the second internal tooth portion of this second pinion internal gear, those the third line star gears then are engaged in a motor gear, described retainer ring can controlledly move axially, make this first location teat mesh this first location rib, or make this second location teat mesh this second location rib.
The utility model causes this first internal tooth portion to mesh the outer toothed portion of described second planetary plate by controlling described change-speed gearing displacement, and this retainer ring is moved to the described first location teat when meshing this first location rib, and the rotating speed of described motor gear input converts first kind of rotating speed (promptly exporting at a high speed) to from this output shaft.Described change-speed gearing displacement causes this first internal tooth portion to mesh the outer toothed portion of described second planetary plate, and when this retainer ring displacement caused the described second location teat to mesh this second location rib, the rotating speed of described motor gear input converted second kind of rotating speed (being high speed output) to from this output shaft.Described change-speed gearing displacement causes this first internal tooth portion to break away from the outer toothed portion of described second planetary plate, and when this retainer ring displacement caused the described first location teat to mesh this first location rib, the rotating speed of described motor gear input converted the third rotating speed (low speed output promptly) to from this output shaft.Described change-speed gearing displacement causes this first internal tooth portion to break away from the outer toothed portion of described second planetary plate, and when this retainer ring displacement caused the described second location teat to mesh this second location rib, the rotating speed of described motor gear input converted the 4th kind of rotating speed (being low speed output) to from this output shaft.
The utility model is controlled the technological means that described change-speed gearing axially moves, and is that the external diameter at change-speed gearing is provided with the first circular groove groove, and at this first circular groove groove one first guide rod is set, and the user controls change-speed gearing and axially moves by operating this first guide rod.
The utility model is controlled the axially movable technological means of described retainer ring, is that the external diameter at retainer ring is provided with the second circular groove groove, and at this second circular groove groove one second guide rod is set, and the user controls retainer ring and moves axially by operating this second guide rod.
The first location teat and the second location teat of retainer ring is located in a kind of preferable selection, the utility model, is located at the rightabout of this retainer ring respectively, and is axially outstanding; The utility model is located at first location rib of internal gear, and second location rib of being located at the third line astrolabe, then is located at the external diameter of this internal gear and the external diameter of this third line astrolabe respectively.
Description of drawings
Fig. 1 is for showing the embodiment three-dimensional exploded view of the utility model primary clustering syntagmatic.
Fig. 2 is structure after the demonstration combination of components of the present utility model and the embodiment three-dimensional cutaway view that switches to the high speed output state.
Fig. 3 is structure after the demonstration combination of components of the present utility model and the embodiment three-dimensional cutaway view that switches to the high speed output state.
Fig. 4 is structure after the demonstration combination of components of the present utility model and the embodiment three-dimensional cutaway view that switches to middle low speed output state.
Fig. 5 is structure after the demonstration combination of components of the present utility model and the embodiment three-dimensional cutaway view that switches to the low speed output state.
The specific embodiment
Those skilled in the art below cooperate Figure of description and element numbers that embodiment of the present utility model is done more detailed description, so that can implement after studying this specification carefully according to this.
Fig. 1 is for showing the preferred embodiment three-dimensional exploded view of the primary clustering syntagmatic that the utility model multistage gear is comprised; The assembly of the following stated all has first end and rightabout second end, and described first end all refers to equidirectional (towards the direction of the output shaft in electric tool the place ahead); Described second end all refers to another identical direction (towards the direction of the motor gear at electric tool rear).
Gear of the present utility model includes a first stud gear device 1 and a second stud gear device 2.First stud gear device 1 further includes second planetary plate 15 that change-speed gearing 14, that one first planetary plate 12, a plurality of first planetary gear 13, have internal tooth portion 142 has a plurality of outer toothed portion 151 and one first pinion 152, with a plurality of second planetary gears 27; Wherein, first end of first planetary plate 12 is provided with a plurality of axially extended axostylus axostyle 122, the second ends and is provided with a plurality of axially extended first planet pins 121; Each first planet pin 121 wears one first planetary gear 13 respectively versatilely, after 122 of each axostylus axostyles wear a cylinder 17 respectively versatilely, again a start assembly 16 is combined in first end of first planetary plate 12, make each cylinder 17 all be arranged in centre bore 160 internal diameters of start assembly 16, first planetary plate 12 is assembled in the front casing 11 together with start assembly 16, cylinder 17 and a bearing 19 second end from a front casing 11 again; The internal diameter of described front casing 11 also is distributed with a plurality of interior fins 111.18 first ends from front casing 11 of output shaft that second end forms polygonal axle 181 penetrate front casing 11, make output shaft 18 be matched with bearing 19, and make polygonal axle 181 polygonal hole 120 of passing first planetary plate 12; During 12 rotations of first planetary plate, can cooperate cylinder 17 and start assembly 16 to drive polygonal axle 181, and then make output shaft 18 rotations; Described first planetary plate 12 cooperates cylinder 17 and structure and the operating principle that start assembly 16 drives polygonal axle 181 to belong to existing technology, is not technical characterictic described in the utility model, so will not give unnecessary details.
Described change-speed gearing 14 is a ring body, and its external diameter is provided with the first circular groove groove 141, and with a plurality of axially extended outer fins 144, internal diameter then is provided with a plurality of internal tooth portion 142; Change-speed gearing 14 is combined in second end of first planetary plate 12, makes each first planetary gear 13 mesh internal tooth portions 142; C-shaped without exception first guide rod, 143 two ends then are matched with in the first circular groove groove 141, and first guide rod 143 is installed in following rear casing 21, when the user operates first guide rod 143, can stir change-speed gearing 14 and move axially; Described outer fin 144 can mesh with the interior fin 111 of front casing 11.
Second planetary plate 15 has a plurality of outer toothed portion 151, and coaxial first pinion 152 that is arranged at first end, second end of second planetary plate 15 then is provided with a plurality of second planet pins 153, and each second planetary gear, 153 equal activity wears one second planetary gear 27; Second planetary plate 15 is combined in the internal diameter of change-speed gearing 14, makes first pinion 152 mesh each first planetary gear 13 simultaneously.The user can control change-speed gearing 14 and moves axially by operating first guide rod 143, makes its internal tooth portion 142 engagements or breaks away from the outer toothed portion 151 of second planetary plate 15.
Fig. 1 shows second stud gear device 2 of the present utility model simultaneously, comprises the third line astrolabe 23, a retainer ring 24, a plurality of the third line star gear 25 and an internal gear 26; The external diameter of described the third line astrolabe 23 is provided with a plurality of second location rib 231, first end of the third line astrolabe 23 then is provided with a plurality of axially extended the third line star gear shafts 232,232 activities of each the third line star tooth axle wear the third line star gear 25, and first end of this third line star gear 25 is provided with one second pinion 251 coaxially.
Described retainer ring 24 is a ring body, its external diameter is provided with one second circular groove groove 243, and being provided with a plurality of first location teats 241 that distribute in week that extend axially and encircle at first end of retainer ring 24, second end of retainer ring 24 then is provided with a plurality of second location teats 242 that distribute in week that extend axially and encircle.The external diameter of described internal gear 26 is provided with a plurality of axially extended first location rib 263, and one the 3rd circular groove groove 261, and internal diameter is provided with internal tooth portion 262.The third line astrolabe 23 then is installed in the rear casing 21 after having made up the third line star gear 25.C-shaped without exception second guide rod, 244 two ends are installed in the rear casing 21 after then being matched with in the second circular groove groove 243 again, and make second guide rod 244 be installed in rear casing 21.Internal gear 26 also is installed in the rear casing 21, and stretches in the 3rd circular groove groove 261 pass the shell wall of rear casing 21 with at least one tip 264 after, provides restriction by 264 pairs of internal gears 26 of the tip, internal gear 26 can be rotated in rear casing 21 but can not move axially.Rear casing 21 makes up mutually with front casing 11 and constitutes a complete shell, to coat each assembly of aforementioned first stud gear device 1 and second stud gear device 2.22 second ends by rear casing 21 of motor gear that are connected in motor (scheming not shown) penetrate inside, and to mesh each the third line star gear 25, each second pinion 251 then meshes internal tooth portion 262.When the user operates second guide rod 244, can control retainer ring 24 and move axially, make this first location teat, 241 these first location rib 263 of engagement, or make this second location teat, 242 these second location rib 231 of engagement.
The mode of operation that the utility model carries out four kinds of rotating speed outputs (i.e. four sections speed changes) is described as follows:
Fig. 2 is the structure after the demonstration gear combination of components of the present utility model, and switches the embodiment three-dimensional cutaway view of paramount rotating speed output state (first kind of rotating speed output).Show among the figure that the user operates first guide rod, 143 drive change-speed gearings 14 and moves toward second extreme directions, make the outer toothed portion 151 of internal tooth portion 142 engagements, second planetary plate 15; And operate second guide rod 244 retainer ring 24 is moved toward the direction of first end, make first location rib 263 of the described first location teat, 241 engagement internal gears 26, this moment, internal gear 26 can't rotate.Therefore, motor gear 22 will be if will drive 27 reverse rotations of second planetary gear when being rotated in the forward, and make second planetary plate 15 be rotated in the forward, at this moment, because the change-speed gearing 14 and first planetary gear 13 and 15 engagements of second planetary plate, make the change-speed gearing 14 and second planetary plate 15 and first planetary plate 12 rotate synchronously, and then drive output shaft 18 is exported with high rotating speed (first kind of rotating speed).
Fig. 3 is the structure after the demonstration gear combination of components of the present utility model, and switches to the embodiment three-dimensional cutaway view of high speed output state (second kind of rotating speed output).Show among the figure that the user operates first guide rod, 143 drive change-speed gearings 14 and moves toward second extreme directions, make the outer toothed portion 151 of internal tooth portion 142 engagements, second planetary plate 15; And operate second guide rod 244 retainer ring 24 is moved toward the direction of second end, to second location rib 231 of the second location teat, the 242 engagement the third line astrolabes 23 that make retainer ring 24, the third line astrolabe 23 of this moment can't rotate.Therefore, motor gear 22 be if will drive 27 reverse rotations of second planetary gear when being rotated in the forward, and drive internal gear 26 reverse rotations, make 15 decelerations of second planetary plate be rotated in the forward; At this moment because change-speed gearing 14 and first planetary gear 13 and 15 engagements of second planetary plate make change-speed gearing 14 and second planetary plate 15 and first planetary plate 12 rotate synchronously, and then drive output shaft 18 with in high rotating speed (second kind of rotating speed) export.
Fig. 4 is the structure after the demonstration gear combination of components of the present utility model, and switches to the embodiment three-dimensional cutaway view of middle low speed output state (the third rotating speed output).Show among the figure that the user operates first guide rod, 143 drive change-speed gearings 14 and moves toward first extreme directions, make internal tooth portion 142 break away from the outer toothed portion 151 of second planetary plate 15, and the interior fin 111 that makes outer fin 144 engagement front casings 11 internal diameters of change-speed gearing 14 external diameters; And operate second guide rod 244 retainer ring 24 is moved toward the direction of first end, to first location rib 263 of the first location teat, 241 engagement internal gears, 26 external diameters that make retainer ring 24, the internal gear 26 of this moment is fixed and can't rotates.Therefore, motor gear 22 be if will drive 27 reverse rotations of second planetary gear when being rotated in the forward, and drive second planetary plate 15 and be rotated in the forward; At this moment, because change-speed gearing 14 is meshed with front casing 11, make change-speed gearing 14 to rotate, therefore, first pinion 152 of second planetary plate 15 can drive 13 reverse rotations of first planetary gear, first planetary plate 12 is promptly driven to slow down and is rotated in the forward, and then output shaft 18 is exported with middle and slow speed of revolution (the third rotating speed).
Fig. 5 is structure after the demonstration gear combination of components of the present utility model and the embodiment three-dimensional cutaway view that switches to low speed output state (the 4th kind of rotating speed output).Show among the figure that the user operates first guide rod, 143 drive change-speed gearings 14 and moves toward first extreme directions, make internal tooth portion 142 break away from the outer toothed portion 151 of second planetary plate 15, and the interior fin 111 that makes outer fin 144 engagement front casings 11 internal diameters of change-speed gearing 14 external diameters; And operate second guide rod 244 retainer ring 24 is moved toward the direction of second end, to second location rib 231 of the second location teat, 242 engagement the third line astrolabes, 23 external diameters that make retainer ring 24, the third line astrolabe 23 of this moment is fixed and can't rotates.Therefore, motor gear 22 be if will drive 27 reverse rotations of second planetary gear when being rotated in the forward, and drive internal gear 26 reverse rotations, cause 15 decelerations of second planetary plate to be rotated in the forward; At this moment, because change-speed gearing 14 is meshed with front casing 11, make change-speed gearing 14 to rotate, therefore, first pinion 152 of second planetary plate 15 can drive 13 reverse rotations of first planetary gear, first planetary plate 12 is promptly driven to slow down and is rotated in the forward, and then output shaft 18 is exported with the slow-speed of revolution (the 4th kind of rotating speed).
The above only is in order to explain preferred embodiment of the present utility model; be not that attempt is done any pro forma restriction to the utility model according to this; therefore; all have in that identical utility model spirit is following do relevant any modification of the present utility model or change, all must be included in the category of the utility model intention protection.
Claims (4)
1. a multistage gear is characterized in that, comprising:
One first stud gear device, include one first planetary plate, a plurality of first planetary gears, one has the change-speed gearing of a plurality of first internal tooth portions, one has second planetary plate of a plurality of outer toothed portion and one first pinion, with a plurality of second planetary gears, the first internal tooth portion that described a plurality of first planetary gear activity is located at this first planetary plate and is meshed this change-speed gearing, described a plurality of second planetary gear activity is located at this second planetary plate and is meshed described first pinion, described change-speed gearing can controlledly move axially, make this first internal tooth portion mesh or break away from the outer toothed portion of this second planetary plate, described first planetary plate connects an output shaft;
One second stud gear device, comprise a third line astrolabe with a plurality of second location rib, one has the retainer ring of a plurality of first location teats and a plurality of second location teats, one has the internal gear of a plurality of first location rib and a plurality of second internal tooth portions, and a plurality of the third line star gears with second pinion, the activity of described the third line star gear is located at this third line astrolabe and is made the second internal tooth portion of this this internal gear of second pinion, those the third line star gears then are engaged in a motor gear, described retainer ring can controlledly move axially, make this first location teat mesh this first location rib, or make this second location teat mesh this second location rib;
Described change-speed gearing displacement causes this first internal tooth portion to mesh the outer toothed portion of described second planetary plate, and when this retainer ring displacement caused the described first location teat to mesh this first location rib, the rotating speed of described motor gear input was exported first kind of rotating speed via this gear conversion from this output shaft; Described change-speed gearing displacement causes this first internal tooth portion to mesh the outer toothed portion of described second planetary plate, and when this retainer ring displacement caused the described second location teat to mesh this second location rib, the rotating speed of described motor gear input was exported second kind of rotating speed via this gear conversion from this output shaft; Described change-speed gearing displacement causes this first internal tooth portion to break away from the outer toothed portion of described second planetary plate, and when this retainer ring displacement caused the described first location teat to mesh this first location rib, the rotating speed of described motor gear input was exported the third rotating speed via this gear conversion from this output shaft; Described change-speed gearing displacement causes this internal tooth portion to break away from the outer toothed portion of described second planetary plate, and when this retainer ring displacement caused the described second location teat to mesh this second location rib, the rotating speed of described motor gear input was exported the 4th kind of rotating speed via this gear conversion from this output shaft.
2. multistage gear as claimed in claim 1 is characterized in that, the external diameter of described change-speed gearing is provided with the first circular groove groove, and one first guide rod is matched with this first circular groove groove, axially moves in order to control this change-speed gearing.
3. multistage gear as claimed in claim 1 is characterized in that, the external diameter of described retainer ring is provided with the second circular groove groove, and one second guide rod is matched with this second circular groove groove, moves axially in order to control this retainer ring.
4. multistage gear as claimed in claim 1, it is characterized in that, the described first location teat and the second location teat are located at the rightabout of this retainer ring respectively, and be axially outstanding, described first location rib and second location rib are located at the external diameter of this internal gear and the external diameter of this third line astrolabe respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201238451U CN201989132U (en) | 2011-04-25 | 2011-04-25 | Multistage speed changing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201238451U CN201989132U (en) | 2011-04-25 | 2011-04-25 | Multistage speed changing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201989132U true CN201989132U (en) | 2011-09-28 |
Family
ID=44665634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201238451U Expired - Lifetime CN201989132U (en) | 2011-04-25 | 2011-04-25 | Multistage speed changing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201989132U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103358291A (en) * | 2012-04-05 | 2013-10-23 | 罗伯特·博世有限公司 | Handheld power tool having a planetary gear set |
| CN111065490A (en) * | 2017-08-29 | 2020-04-24 | 费斯托工具有限责任公司 | Hand-held power tool |
| DE102012213724B4 (en) | 2012-03-26 | 2023-11-30 | Robert Bosch Gmbh | Planetary gear for a hand machine tool |
-
2011
- 2011-04-25 CN CN2011201238451U patent/CN201989132U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012213724B4 (en) | 2012-03-26 | 2023-11-30 | Robert Bosch Gmbh | Planetary gear for a hand machine tool |
| CN103358291A (en) * | 2012-04-05 | 2013-10-23 | 罗伯特·博世有限公司 | Handheld power tool having a planetary gear set |
| CN103358291B (en) * | 2012-04-05 | 2016-12-28 | 罗伯特·博世有限公司 | There is the hand held power machine of planetary transmission |
| CN111065490A (en) * | 2017-08-29 | 2020-04-24 | 费斯托工具有限责任公司 | Hand-held power tool |
| CN111065490B (en) * | 2017-08-29 | 2023-11-03 | 费斯托工具有限责任公司 | Hand-held tool machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110928 |
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| CX01 | Expiry of patent term |