CN203796869U - Speed change device - Google Patents
Speed change device Download PDFInfo
- Publication number
- CN203796869U CN203796869U CN201420195159.9U CN201420195159U CN203796869U CN 203796869 U CN203796869 U CN 203796869U CN 201420195159 U CN201420195159 U CN 201420195159U CN 203796869 U CN203796869 U CN 203796869U
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- synchronizer
- gear
- internal tooth
- tooth cylinder
- engage
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Abstract
The utility model relates to a speed change device which comprises a housing, an input shaft and an output shaft, wherein the input and output shafts are sleeved with a sun gear, a planetary gear carrier and an inner tooth cylinder in sequence from inside to outside; a planetary gear is mounted in the axial middle of the planetary gear carrier; first and second synchronizers are arranged on the input shaft; third, fourth and fifth synchronizers are arranged on the output shaft. The speed change device is relatively small in volume and relatively large in transmission torque on the premise of having the same gear number as an existing speed change device.
Description
Technical field
The utility model relates to the speed change gear of motor vehicle.
Background technique
Speed change gear on motor vehicle, for the shift speed change of motor vehicle, makes motor vehicle regulate in time travelling speed, to adapt to the different shapes that travels.Existing speed change gear is in the time of work, and each gear is all by two intermeshing transmission of carrying out moment of torsion of gear, therefore the moment of torsion of its transmission is less, and because gear quantity is many, causes the volume of speed change gear larger, and cost is high.
Summary of the invention
The purpose of this utility model is to provide a kind of speed change gear, has under the prerequisite of identical gear quantity with existing speed change gear, and its small volume, and the moment of torsion transmitting is larger.
Speed change gear described in the utility model, comprise that housing and outer end are supported on input shaft and the output shaft on housing, input shaft and output shaft coaxial line, its inner overlap joint mutually supports, on the interior edge face of shell ends that supports input shaft and output shaft, be respectively arranged with the first chassis end gear and the second chassis end gear with input and output shaft coaxial line, on input shaft and output shaft, be set with successively from the inside to the outside the sun gear with input and output shaft coaxial line, planetary carrier and internal tooth cylinder, axial middle part at planetary carrier is provided with planetary pinion, it engages with axial middle part and the internal tooth cylinder of sun gear simultaneously, on planetary carrier external peripheral surface, edge is circumferentially provided with the protruding key of a circle, on internal tooth cylinder inner circumferential surface, edge is circumferentially provided with a circle keyway, protruding key mapping in keyway with keyway transition fit, internal tooth cylinder coordinates with body clearance, on internal tooth cylinder, be connected with and make it make axially movable selector fork.
On input shaft, be provided with the first synchronizer and the second synchronizer, be provided with the 3rd synchronizer, the 4th synchronizer and the 5th synchronizer on output shaft, second is identical with the 3rd synchronizer, and between the first synchronizer and the 4th synchronizer; The two ends of sun gear are identical ring gear, and it can engage with second, third synchronizer respectively; The two ends of planetary carrier are also ring gear, and its one end can be engaged with the first chassis end gear and the first synchronizer, and its other end can engage with the 4th synchronizer; One end of internal tooth cylinder is ring gear, it can engage with the second chassis end gear and the 5th synchronizer, and edge circumferentially offers one section of groove on the inner circumferential surface of this end of internal tooth cylinder, in the time that selector fork is stirred internal tooth cylinder and is moved axially, the 5th synchronizer is except engaging with the ring gear of internal tooth cylinder one end, and the 5th synchronizer does not all touch with internal tooth socket joint in this groove.
The length of sun gear, planetary carrier and internal tooth cylinder and the spacing of each synchronizer on input and output shaft should meet: in the time that engage with second, third synchronizer respectively at the two ends of sun gear, engage with the second chassis end gear one end of internal tooth cylinder; When the second synchronizer engages with one end of sun gear, when engage with the 4th synchronizer one end of planetary carrier, engage with the second chassis end gear one end of internal tooth cylinder; When the 3rd synchronizer engages with the other end of sun gear, when the other end of planetary carrier engages with the first synchronizer, engage with the second chassis end gear one end of internal tooth cylinder; When the second synchronizer engages with one end of sun gear, when engage with the 5th synchronizer one end of internal tooth cylinder, the other end of planetary carrier engages with the first chassis end gear.
This speed change gear has four kinds of shifting state:
One, direct-drive shifting state
Now engage with second, third synchronizer respectively at the two ends of sun gear, and engage with the second chassis end gear one end of internal tooth cylinder;
Two, gearing down shifting state
Now the second synchronizer engages with one end of sun gear, and engage with the 4th synchronizer one end of planetary carrier, and engage with the second chassis end gear one end of internal tooth cylinder;
Three, the shifting state that drives up
Now the 3rd synchronizer engages with the other end of sun gear, and the other end of planetary carrier engages with the first synchronizer, and engage with the second chassis end gear one end of internal tooth cylinder;
Four, the transmission shifting state of reversing gear
Now the second synchronizer engages with one end of sun gear, and engage with the 5th synchronizer one end of internal tooth cylinder, and the other end of planetary carrier engages with the first chassis end gear.
Speed change gear described in the utility model is owing to having adopted planetary gear mechanism, have under the prerequisite of identical gear number with existing speed change gear, reduce the quantity of device middle gear, thereby reduced volume and the manufacture cost of speed change gear, and planetary gear mechanism can transmit larger moment of torsion compared with two gear engagements.
Brief description of the drawings
Fig. 1 is the cross-sectional schematic of speed change gear described in the utility model in the time of direct-drive shifting state;
Fig. 2 is the cross-sectional schematic of speed change gear described in the utility model in the time of gearing down shifting state;
Fig. 3 is the cross-sectional schematic of speed change gear described in the utility model in the time driving up shifting state;
Fig. 4 is the cross-sectional schematic of speed change gear described in the utility model in the time reversing gear transmission shifting state;
Fig. 5 is the sectional view of sun gear;
Fig. 6 is the sectional view of planetary carrier;
Fig. 7 is the sectional view along A-A line in Fig. 6;
Fig. 8 is the sectional view of internal tooth cylinder.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figures 1 to 4, this speed change gear comprises that housing 8 and outer end are supported on input shaft 10 and the output shaft 1 on housing 8, input shaft 10 and output shaft 1 coaxial line, and its inner bearing 13 that passes through mutually overlaps and supports.On the interior edge face of shell ends that supports input shaft 10 and output shaft 1, be respectively arranged with and the first chassis end gear 9 and the second chassis end gear 2 of input and output shaft coaxial line, first, second chassis end gear 9,2 and housing 8 combine as a whole.On input shaft 10 and output shaft 1, be set with successively from the inside to the outside sun gear 14, planetary carrier 4 and internal tooth cylinder 3 with input and output shaft coaxial line, as shown in Figure 5, sun gear 14 is the jacket casing structure that two end part diameter is large, middle part diameter is little, offer tooth at its two end part inner circumferential surface, make two end part form identical ring gear, and external peripheral surface is in the middle provided with tooth, make middle part formative gear.As shown in Figure 6 and Figure 7, the two ends of planetary carrier 4 are also ring gear, on the end wall at its axial middle part, offer six holes 19 that planet pins 6 are installed, three planetary pinions 5 can be arranged on to the axial middle part of planetary carrier 4 by this hole 19 and three planet pins 6, planetary pinion 5 engages with axial middle part and the internal tooth cylinder 3 of sun gear 14 simultaneously, and the planetary carrier 4 axially end walls at middle part carries out Spielpassung between sun gear 14 two end part, like this in the time that planetary carrier 4 moves axially, can drive sun gear 14 to move axially simultaneously.On planetary carrier 4 external peripheral surfaces, edge is circumferentially provided with the protruding key 20 of a circle, as shown in Figure 8, on internal tooth cylinder 3 inner circumferential surfaces, edge is circumferentially provided with a circle keyway 21, protruding key 20 is positioned at keyway 21 and keyway transition fit, and this protruding key 20 can make internal tooth cylinder 3 drive planetary carrier 4 to move axially.Internal tooth cylinder 3 and housing 8 Spielpassung, on internal tooth cylinder 8 external peripheral surfaces, along circumferentially offering fork slot 23, the lower end of selector fork 7 is positioned at fork slot 23, and selector fork 7 is connected with internal tooth cylinder 8, moves axially to control internal tooth cylinder 8.
On input shaft 10, be provided with the first synchronizer 11 and the second synchronizer 12, on output shaft 1, be provided with the 3rd synchronizer 15, the 4th synchronizer 16 and the 5th synchronizer 17, second is identical with the 3rd synchronizer 12,15, and between the first synchronizer 11 and the 4th synchronizer 16, the 5th synchronizer 17 outer end of close output shaft.The ring gear at sun gear 14 two ends can engage with second, third synchronizer 12,15 respectively, and the ring gear of planetary carrier 4 one end can engage with the first chassis end gear 9 and the first synchronizer 11, and the ring gear of its other end can engage with the 4th synchronizer 16.One end of internal tooth cylinder 3 is ring gear, it can engage with the second chassis end gear 2 and the 5th synchronizer 17, and edge circumferentially offers one section of groove 22 on the inner circumferential surface of internal tooth cylinder 3 these ends, in the time that selector fork 7 is stirred internal tooth cylinder 3 and is moved axially, the 5th synchronizer 17 is except engaging with the ring gear of internal tooth cylinder 3 one end, and the 5th synchronizer 17 does not all contact with internal tooth cylinder 3 in this groove 22.
The length of sun gear 14, planetary carrier 4 and internal tooth cylinder 3 and the spacing of each synchronizer on input and output shaft should meet: in the time that engage with second, third synchronizer 12,15 respectively at the two ends of sun gear 14, engage with the second chassis end gear 2 one end of internal tooth cylinder 3; When the second synchronizer 12 engages with one end of sun gear 14, when engage with the 4th synchronizer 15 one end of planetary carrier 4, engage with the second chassis end gear 2 one end of internal tooth cylinder 3; When the 3rd synchronizer 15 engages with the other end of sun gear 14, when the other end of planetary carrier 4 engages with the first synchronizer 11, engage with the second chassis end gear 2 one end of internal tooth cylinder 3; When the second synchronizer 12 engages with one end of sun gear 14, when engage with the 5th synchronizer 17 one end of internal tooth cylinder 3, the other end of planetary carrier 4 engages with the first chassis end gear 9.
This speed change gear has four kinds of shifting state:
One, direct-drive shifting state
As shown in Figure 1, now the ring gear at the two ends of sun gear 14 engages with second, third synchronizer 12,15 respectively, and the ring gear of internal tooth cylinder 3 one end engages with the second chassis end gear 2.When work, input shaft 10 rotates by the second synchronizer 12 and drives sun gear 14 rotating Vortexes, and sun gear 14 drives output shaft 1 rotating Vortex by the 3rd synchronizer 15 again.Because second, third synchronizer 12,15 is identical, therefore output shaft 1 rotating speed is identical with input shaft 10, realize the direct transmission of speed.
Two, gearing down shifting state
As shown in Figure 2, now the second synchronizer 12 engages with one end of sun gear 14, and engage with the 4th synchronizer 16 one end of planetary carrier 4, and engage with the second chassis end gear 2 one end of internal tooth cylinder 3.When work, input shaft 10 rotates by the second synchronizer 12 and drives sun gear 14 rotating Vortexes, sun gear 14 drives three planetary pinions 5 to do counterrotating again, because engage with the second chassis end gear 2 internal tooth cylinder 3 one end, internal tooth cylinder 3 can not be rotated, therefore three planetary pinions 5 drive planetary carrier 4 to do and input shaft 10 rotation in the same way by planet pin 6, planetary carrier 4 drives output shaft 1 rotating Vortex by the 4th synchronizer 16 again, thereby realizes the transmission of deceleration in the same way of rotating speed by planetary gear mechanism.
Three, the shifting state that drives up
As shown in Figure 3, now the 3rd synchronizer 15 engages with the other end of sun gear 14, and the other end of planetary carrier 4 engages with the first synchronizer 11, and engage with the second chassis end gear 2 one end of internal tooth cylinder 3.When work, input shaft 10 rotates by the first synchronizer 11 and drives planetary carrier 4 to do and input shaft 10 rotation in the same way, because engage with the second chassis end gear 2 internal tooth cylinder 3 one end, internal tooth cylinder 3 can not be rotated, make three planetary pinions 5 do the rotation reverse with input shaft 10, planetary pinion 5 drives sun gear 14 to do and input shaft 10 rotation in the same way again, and sun gear 14 drives the 3rd synchronizer 15 rotating Vortexes again, thereby realizes the transmission of acceleration in the same way of rotating speed by planetary gear mechanism.
Four, the transmission shifting state of reversing gear
As shown in Figure 4, now the second synchronizer 12 engages with one end of sun gear 14, and the ring gear of internal tooth cylinder 3 one end engages with the 5th synchronizer 17, and the other end of planetary carrier 4 engages with the first chassis end gear 9.When work, input shaft 10 rotates by the second synchronizer 12 and drives sun gear 14 rotating Vortexes, sun gear 14 drives three planetary pinions 5 to do counterrotating again, because the other end of planetary carrier 4 engages with the first chassis end gear 9, planetary carrier 4 can not be rotated, therefore planetary pinion 5 will drive internal tooth cylinder 3 to make rotating Vortex, internal tooth cylinder 3 drives the 5th synchronizer 17 rotating Vortexes again, the i.e. rotation reverse with input shaft 10, thus realize by planetary gear mechanism the transmission of reversing gear.
Claims (1)
1. a speed change gear, comprise that housing (8) and outer end are supported on input shaft (10) and the output shaft (1) on housing, input shaft and output shaft coaxial line, its inner overlap joint mutually supports, it is characterized in that: on the interior edge face of shell ends that supports input shaft and output shaft, be respectively arranged with the first chassis end gear (9) and the second chassis end gear (2) with input and output shaft coaxial line, on input shaft and output shaft, be set with successively from the inside to the outside the sun gear (14) with input and output shaft coaxial line, planetary carrier (4) and internal tooth cylinder (3), at the axial middle part of planetary carrier, planetary pinion (5) is installed, it engages with axial middle part and the internal tooth cylinder of sun gear simultaneously, on planetary carrier external peripheral surface, edge is circumferentially provided with the protruding key of a circle (20), on internal tooth cylinder inner circumferential surface, edge is circumferentially provided with a circle keyway (21), protruding key mapping in keyway with keyway transition fit, internal tooth cylinder coordinates with body clearance, on internal tooth cylinder, be connected with and make it make axially movable selector fork (7),
On input shaft, be provided with the first synchronizer (11) and the second synchronizer (12), on output shaft, be provided with the 3rd synchronizer (15), the 4th synchronizer (16) and the 5th synchronizer (17), second is identical with the 3rd synchronizer, and between the first synchronizer and the 4th synchronizer; The two ends of sun gear are identical ring gear, and it can engage with second, third synchronizer respectively; The two ends of planetary carrier are also ring gear, and its one end can be engaged with the first chassis end gear and the first synchronizer, and its other end can engage with the 4th synchronizer; One end of internal tooth cylinder is ring gear, it can engage with the second chassis end gear and the 5th synchronizer, and edge circumferentially offers one section of groove (22) on the inner circumferential surface of this end of internal tooth cylinder, in the time that selector fork is stirred internal tooth cylinder and is moved axially, the 5th synchronizer is except engaging with the ring gear of internal tooth cylinder one end, and the 5th synchronizer does not all touch with internal tooth socket joint in this groove;
The length of sun gear, planetary carrier and internal tooth cylinder and the spacing of each synchronizer on input and output shaft should meet: in the time that engage with second, third synchronizer respectively at the two ends of sun gear, engage with the second chassis end gear one end of internal tooth cylinder; When the second synchronizer engages with one end of sun gear, when engage with the 4th synchronizer one end of planetary carrier, engage with the second chassis end gear one end of internal tooth cylinder; When the 3rd synchronizer engages with the other end of sun gear, when the other end of planetary carrier engages with the first synchronizer, engage with the second chassis end gear one end of internal tooth cylinder; When the second synchronizer engages with one end of sun gear, when engage with the 5th synchronizer one end of internal tooth cylinder, the other end of planetary carrier engages with the first chassis end gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420195159.9U CN203796869U (en) | 2014-04-22 | 2014-04-22 | Speed change device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420195159.9U CN203796869U (en) | 2014-04-22 | 2014-04-22 | Speed change device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203796869U true CN203796869U (en) | 2014-08-27 |
Family
ID=51379081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420195159.9U Expired - Fee Related CN203796869U (en) | 2014-04-22 | 2014-04-22 | Speed change device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203796869U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899718A (en) * | 2014-04-22 | 2014-07-02 | 瞿庆涛 | Speed change device of motor vehicle |
| CN104279275A (en) * | 2014-09-16 | 2015-01-14 | 陈扬珑 | Electric three-gear-speed planetary gearbox |
-
2014
- 2014-04-22 CN CN201420195159.9U patent/CN203796869U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899718A (en) * | 2014-04-22 | 2014-07-02 | 瞿庆涛 | Speed change device of motor vehicle |
| CN103899718B (en) * | 2014-04-22 | 2016-03-30 | 瞿庆涛 | The speed change gear of Motor Vehicle |
| CN104279275A (en) * | 2014-09-16 | 2015-01-14 | 陈扬珑 | Electric three-gear-speed planetary gearbox |
| CN104279275B (en) * | 2014-09-16 | 2017-05-03 | 陈扬珑 | Electric three-gear-speed planetary gearbox |
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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: 20140827 Termination date: 20190422 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |