CN216424670U - Speed-changing gear-shifting device - Google Patents
Speed-changing gear-shifting device Download PDFInfo
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- CN216424670U CN216424670U CN202120889184.7U CN202120889184U CN216424670U CN 216424670 U CN216424670 U CN 216424670U CN 202120889184 U CN202120889184 U CN 202120889184U CN 216424670 U CN216424670 U CN 216424670U
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- mandrel
- speed
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Abstract
The utility model discloses a speed changing and shifting device, and relates to the field of speed changing mechanisms. The technical scheme is characterized by comprising a speed change shaft sleeve and a mandrel which are coaxially arranged, wherein the speed change shaft sleeve is connected with a shaft sleeve driving piece which is in circumferential linkage with the speed change shaft sleeve, and the mandrel is connected with a mandrel driving piece which is in circumferential linkage with the mandrel; the speed change gear shifting device further comprises a rotating speed superposition execution assembly matched with the shaft sleeve driving piece and the mandrel driving piece, and a gear shifting motor used for driving the rotating speed superposition execution assembly. According to the utility model, the rotating speed superposition executing assembly forms an independent unit, is in transmission connection with a variable speed shaft sleeve and a mandrel in the variable speed mechanism, and adopts the gear shifting motor to realize electric control, so that gear shifting after differential speed of two shafts is realized, and the assembly and maintenance are convenient.
Description
Technical Field
The utility model relates to the field of speed change mechanisms, in particular to a speed change gear shifting device.
Background
The motor of the moped is mainly a common speed-reducing middle-arranged motor in the market, the gear shifting can not be realized to change the speed, and the speed change of the bicycle still depends on the gear switcher of the bicycle.
If a user wants the power assistance and the smooth speed change of the motor, two systems of the bicycle gear switcher and the speed reduction middle-placed motor are needed. However, the two systems are not only difficult to match but also the assembly of the bicycle becomes relatively complicated
Chinese patent No. CN104953759B discloses a variable reduction ratio center motor for an electric bicycle, but the center motor can only realize two different reduction ratios.
Chinese patent No. CN102770338B discloses a gear shifting device and a transmission unit, which includes a first shaft constituting a hollow shaft, a first camshaft coaxially disposed in the first shaft, and a driving mechanism connected to the first camshaft, where the driving mechanism includes a rotational speed superposition transmission mechanism coaxially disposed on the first shaft.
The gear shifting device in the patent can realize multi-gear adjustment, and can form a multi-gear variable-speed mid-set motor if applied to a mid-set motor. However, when the gear shifting device in the above patent is combined with the existing mid-set motor, the following problems still exist: the rotating speed superposition transmission mechanism needs manual adjustment and cannot be matched with automatic control of a middle motor.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a speed-changing gear-shifting device which realizes automatic adjustment through a motor and is convenient to assemble and maintain due to a separated structural design.
In order to achieve the purpose, the utility model provides the following technical scheme:
a speed change and gear shift device comprises a speed change shaft sleeve and a mandrel which are coaxially arranged, wherein the speed change shaft sleeve is connected with a shaft sleeve driving piece which is linked with the speed change shaft sleeve along the circumferential direction, and the mandrel is connected with a mandrel driving piece which is linked with the mandrel along the circumferential direction;
the speed change gear shifting device further comprises a rotating speed superposition execution assembly matched with the shaft sleeve driving piece and the mandrel driving piece, and a gear shifting motor used for driving the rotating speed superposition execution assembly.
Further, the rotating speed superposition execution assembly comprises a planet carrier, a first sun gear, a second sun gear, a first inner gear ring and a second inner gear ring; one side of the planet carrier is provided with a first planet wheel matched with the first sun wheel and the first inner gear ring, and the other side of the planet carrier is provided with a second planet wheel matched with the second sun wheel and the second inner gear ring;
the first inner gear ring is matched with the mandrel driving part to transmit the rotating speed, and the second inner gear ring is matched with the shaft sleeve driving part to transmit the rotating speed;
the second sun gear is fixed, and a driving shaft sleeve connected with the first sun gear is arranged on the gear shifting motor.
Further, the first sun gear is sleeved on the driving shaft sleeve, and the first sun gear and the driving shaft sleeve are linked in the circumferential direction.
Furthermore, a non-circular driving hole matched with the driving shaft sleeve is formed in the first sun gear.
Further, the driving shaft sleeve penetrates through the planet carrier and the second sun gear, and clearance fit is formed between the driving shaft sleeve and the planet carrier and between the driving shaft sleeve and the second sun gear.
Further, the mandrel driving part is a mandrel driving gear, and a first external tooth part meshed with the mandrel driving gear is arranged on the outer side wall of the first inner gear ring.
Further, the shaft sleeve driving part is a shaft sleeve driving gear, and a second external tooth part meshed with the shaft sleeve driving gear is arranged on the outer side wall of the second annular gear.
Furthermore, the end of the shaft sleeve driving part extends to form a ring plate embedded in the speed change shaft sleeve, and the ring plate and the speed change shaft sleeve are linked along the circumferential direction.
Furthermore, the outer side wall of the ring plate is provided with a clamping block, and the inner side wall of the speed change shaft sleeve is provided with a clamping groove matched with the clamping block.
Further, the mandrel driving part is sleeved on the mandrel, and a non-circular linkage hole matched with the mandrel is formed in the mandrel driving part.
In conclusion, the utility model has the following beneficial effects:
1. in the utility model, the rotating speed superposition executing assembly forms an independent unit which is in transmission connection with a variable speed shaft sleeve and a mandrel in a variable speed mechanism, and a gear shifting motor is adopted to realize electric control, thereby realizing gear shifting after differential speed of two shafts;
2. separate the rotational speed stack executive component alone, can simplify speed change mechanism's structure, convenient assembly and later maintenance.
Drawings
FIG. 1 is a schematic diagram of an overall construction of a transmission shifting apparatus according to an embodiment;
FIG. 2 is a cross-sectional view of a transmission shifting apparatus of the embodiment;
FIG. 3 is a first schematic diagram of a first exemplary embodiment of a rotational speed stacking actuator;
fig. 4 is a schematic structural diagram of a rotational speed superposition execution assembly in the embodiment.
In the figure: 1. a shift collar; 11. the shaft sleeve drives the gear; 12. a ring plate; 2. a mandrel; 21. the mandrel drives the gear; 3. a gear shifting motor; 41. a drive shaft sleeve; 42. a planet carrier; 43. a first sun gear; 44. a second sun gear; 45. a second planet wheel; 46. a first planet gear; 47. a second ring gear; 471. a second outer tooth portion; 48. a first ring gear; 481. a first outer tooth.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Example (b):
a speed change and gear shift device, refer to fig. 1 and fig. 2, it includes coaxial speed change axle sleeve 1 and dabber 2 that set up, dabber 2 is worn to locate in the middle of the speed change axle sleeve 1; the speed changing shaft sleeve 1 is connected with a shaft sleeve driving piece which is linked with the speed changing shaft sleeve along the circumferential direction, and the mandrel 2 is connected with a mandrel driving piece which is linked with the mandrel driving piece along the circumferential direction; the speed-changing gear-shifting device also comprises a rotating speed superposition execution assembly matched with the shaft sleeve driving piece and the mandrel driving piece, and a gear-shifting motor 3 used for driving the rotating speed superposition execution assembly; form independent unit with rotational speed stack execute subassembly in this embodiment, separate with speed change sleeve 1 and dabber 2 to be convenient for the assembly and the maintenance of whole device, adopt gear change motor 3 to drive rotational speed stack execute subassembly simultaneously, thereby can realize automatic gearshift and adjust.
Referring to fig. 2 to 4, the rotational speed superposition performing assembly includes a carrier 42, a first sun gear 43, a second sun gear 44, a first ring gear 48, and a second ring gear 47; a first planet wheel 46 matched with the first sun wheel 43 and the first ring gear 48 is arranged on one side of the planet carrier 42, and a second planet wheel 45 matched with the second sun wheel 44 and the second ring gear 47 is arranged on the other side; wherein, the first inner gear ring 48 is matched with the mandrel driving part to transmit the rotating speed, and the second inner gear ring 47 is matched with the shaft sleeve driving part to transmit the rotating speed; specifically, the spindle driving part in this embodiment is the spindle driving gear 21, and the outer side wall of the first ring gear 48 is provided with a first external tooth part 481 engaged with the spindle driving gear 21; the shaft sleeve driving part is a shaft sleeve driving gear 11, and a second external tooth part 471 meshed with the shaft sleeve driving gear 11 is arranged on the outer side wall of the second internal tooth ring 47; in this embodiment, the transmission is realized by directly engaging the first inner gear ring 48 with the spindle driving member and the second inner gear ring 47 with the shaft sleeve driving member through gears, and in other alternative embodiments, the transmission may also be realized by using a synchronous belt or a chain.
Referring to fig. 1 to 4, the second sun gear 44 is fixed, and the shift motor 3 is provided with a driving sleeve 41 connected with the first sun gear 43; specifically, in the present embodiment, the second sun gear 44 needs to be fixed by a fixing frame, and the structural form of the fixing frame is not limited; the first sun gear 43 is sleeved on the driving shaft sleeve 41 and linked with the driving shaft sleeve along the circumferential direction; specifically, a non-circular driving hole matched with the driving shaft sleeve 41 is formed in the first sun gear 43, and the driving hole is an inner hexagonal hole in the embodiment, so that the assembly and the disassembly are convenient; in other alternative embodiments, the first sun gear 43 and the driving sleeve 41 may also be connected by a key-way fit or the like, and is not limited herein; in this embodiment, the driving shaft sleeve 41 passes through the planet carrier 42 and the second sun gear 44, and the space between the driving shaft sleeve 41 and the planet carrier 42 and the space between the driving shaft sleeve 41 and the second sun gear 44 are both in clearance fit; in this embodiment, the shift motor 3 and the shift sleeve 1 are disposed on the same side, so that the axial dimension can be conveniently controlled.
Referring to fig. 2, in the present embodiment, the end of the sleeve driving gear 11 extends to form a ring plate 12 embedded in the shift sleeve 1, and the ring plate 12 and the shift sleeve 1 are linked in a circumferential direction; specifically, the outer side wall of the ring plate 12 is provided with a clamping block (not shown in the drawings), and the inner side wall of the speed change shaft sleeve 1 is provided with a clamping groove (not shown in the drawings) matched with the clamping block; the circumferential linkage between the speed change shaft sleeve 1 and the shaft sleeve driving gear 11 can be realized through the matching of the clamping block and the clamping groove; in other alternative embodiments, the shift collar 1 and the collar driving member may also be fixedly connected, or integrally formed, and are not limited herein; in the embodiment, the mandrel driving gear 21 is sleeved on the mandrel 2, and the mandrel driving gear 21 is internally provided with a non-circular linkage hole matched with the mandrel 2, wherein the linkage hole is an internal hexagonal hole; in other alternative embodiments, the spindle driving gear 21 and the spindle 2 may be connected by a key-and-slot fit or the like, which is not limited herein.
The working principle is as follows:
when the shift motor 3 is not energized, the output shaft thereof has relatively large rotational resistance, so that the first sun gear 43 is locked.
The speed change shaft sleeve 1 is driven to rotate by external force and then drives the shaft sleeve driving gear 11 to rotate, the shaft sleeve driving gear 11 drives the second inner gear ring 47 to rotate, and the second inner gear ring 47 drives the second planet gear 45 and the planet carrier 42 to rotate; because the second sun gear 44 is fixed and the first sun gear 43 is in a locked state, the first planet gear 46 can only drive the first inner gear ring 48 to rotate, and the first inner gear ring 48 drives the mandrel 2 to rotate through the mandrel driving gear 21, so that the synchronous rotation of the shift sleeve 1 and the mandrel 2 is realized.
The shift motor 3 drives the first sun gear 43 to rotate by a certain angle, and the first inner gear ring 48 and the second inner gear ring 47 realize corresponding differential speed according to the speed ratio of the planetary reduction mechanism, so that the differential speed between the mandrel 2 and the speed change shaft sleeve 1 is realized, and the shift can be realized.
To shift gear motor 3 and realize quick, accurate turned angle, can adopt circuit such as rotary transformer, hall to detect the relative angle of dabber 2 and speed change axle sleeve 1 or the turned angle of shifting gear motor 3 output.
Claims (10)
1. The utility model provides a variable speed gearshift, includes the variable speed axle sleeve and the dabber of coaxial setting, its characterized in that: the speed changing shaft sleeve is connected with a shaft sleeve driving piece which is linked with the speed changing shaft sleeve along the circumferential direction, and the mandrel is connected with a mandrel driving piece which is linked with the mandrel driving piece along the circumferential direction;
the speed change gear shifting device further comprises a rotating speed superposition execution assembly matched with the shaft sleeve driving piece and the mandrel driving piece, and a gear shifting motor used for driving the rotating speed superposition execution assembly.
2. The transmission shifting apparatus of claim 1, wherein: the rotating speed superposition execution assembly comprises a planet carrier, a first sun gear, a second sun gear, a first inner gear ring and a second inner gear ring; one side of the planet carrier is provided with a first planet wheel matched with the first sun wheel and the first inner gear ring, and the other side of the planet carrier is provided with a second planet wheel matched with the second sun wheel and the second inner gear ring;
the first inner gear ring is matched with the mandrel driving part to transmit the rotating speed, and the second inner gear ring is matched with the shaft sleeve driving part to transmit the rotating speed;
the second sun gear is fixed, and a driving shaft sleeve connected with the first sun gear is arranged on the gear shifting motor.
3. The transmission shifting apparatus of claim 2, wherein: the first sun wheel is sleeved on the driving shaft sleeve, and the first sun wheel and the driving shaft sleeve are linked along the circumferential direction.
4. The transmission shifting apparatus of claim 3, wherein: and a non-circular driving hole matched with the driving shaft sleeve is arranged in the first sun gear.
5. The transmission shifting apparatus of claim 2, wherein: the driving shaft sleeve penetrates through the planet carrier and the second sun gear, and clearance fit is formed between the driving shaft sleeve and the planet carrier and between the driving shaft sleeve and the second sun gear.
6. The transmission shifting apparatus of claim 2, wherein: the mandrel driving part is a mandrel driving gear, and a first outer tooth part meshed with the mandrel driving gear is arranged on the outer side wall of the first inner gear ring.
7. The transmission shifting apparatus of claim 2, wherein: the shaft sleeve driving part is a shaft sleeve driving gear, and a second outer tooth part meshed with the shaft sleeve driving gear is arranged on the outer side wall of the second inner gear ring.
8. The variable speed shifting apparatus of any one of claims 1-7, wherein: the end of the shaft sleeve driving part extends to be provided with a ring plate embedded in the speed change shaft sleeve, and the ring plate is linked with the speed change shaft sleeve along the circumferential direction.
9. The transmission shifting apparatus of claim 8, wherein: the outer side wall of the ring plate is provided with a clamping block, and the inner side wall of the speed change shaft sleeve is provided with a clamping groove matched with the clamping block.
10. The variable speed shifting apparatus of any one of claims 1-7, wherein: the mandrel driving part is sleeved on the mandrel, and a noncircular linkage hole matched with the mandrel is formed in the mandrel driving part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120889184.7U CN216424670U (en) | 2021-04-27 | 2021-04-27 | Speed-changing gear-shifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120889184.7U CN216424670U (en) | 2021-04-27 | 2021-04-27 | Speed-changing gear-shifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216424670U true CN216424670U (en) | 2022-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120889184.7U Active CN216424670U (en) | 2021-04-27 | 2021-04-27 | Speed-changing gear-shifting device |
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| CN (1) | CN216424670U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022001738A1 (en) | 2022-05-17 | 2023-11-23 | Karlheinz Nicolai | Bottom bracket gear with actuating device for a bicycle and a bicycle with such a bottom bracket gear |
| WO2024013091A1 (en) * | 2022-07-11 | 2024-01-18 | Classified Cycling Bv | Transmission assembly for a bicycle |
-
2021
- 2021-04-27 CN CN202120889184.7U patent/CN216424670U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022001738A1 (en) | 2022-05-17 | 2023-11-23 | Karlheinz Nicolai | Bottom bracket gear with actuating device for a bicycle and a bicycle with such a bottom bracket gear |
| WO2024013091A1 (en) * | 2022-07-11 | 2024-01-18 | Classified Cycling Bv | Transmission assembly for a bicycle |
| NL2032444B1 (en) * | 2022-07-11 | 2024-01-23 | Classified Cycling Bv | Transmission assembly for a bicycle |
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