CN211039640U - Two-gear transmission gear shifting actuating mechanism and transmission - Google Patents
Two-gear transmission gear shifting actuating mechanism and transmission Download PDFInfo
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- CN211039640U CN211039640U CN201921344998.1U CN201921344998U CN211039640U CN 211039640 U CN211039640 U CN 211039640U CN 201921344998 U CN201921344998 U CN 201921344998U CN 211039640 U CN211039640 U CN 211039640U
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Abstract
The utility model provides a two-gear transmission gear shifting actuating mechanism and a transmission, wherein the actuating mechanism comprises a gear shifting motor, the gear shifting motor is provided with a motor shaft, and the output end of the motor shaft is a worm shaft; the actuating mechanism also comprises a sector worm wheel, and the sector worm wheel and the worm shaft are mutually meshed to form a worm and gear structure; a shifting block used for pushing a gear shifting block of the transmission is arranged at the non-fan-shaped end of the fan-shaped worm wheel, and the swinging direction of the shifting block is consistent with the rotating direction of the fan-shaped worm wheel; the fan-shaped worm wheel is supported and fixed in the actuating mechanism through a supporting shaft. The utility model discloses directly adopt the worm gear as drive mechanism, realize reducing speed and increasing torsion, the worm gear has the shifting block, realizes shifting action, has reduced part quantity and driving chain, also can obtain great reduction ratio, helps selecting the gear shifting motor of little moment of torsion, undercurrent simultaneously to reduce gear shifting motor's electric current, alleviate controller and gear shifting motor's current load, can improve the reliability of product and reduce the cost of product.
Description
Technical Field
The utility model belongs to the technical field of the derailleur, concretely relates to two grades of derailleurs actuating mechanism and derailleur of shifting.
Background
In electric vehicles, transmissions are often used for power transmission, in which a shift actuator is required for shifting the transmission. For example, in chinese patent CN207527018U, a ball screw structure is adopted, which is complex in structure, high in requirement for manufacturing precision, and expensive in cost. For example, in chinese patent application CN109340369A, a gear train structure is adopted, however, this structure requires a long transmission chain and a large number of components, and it is difficult to obtain a large reduction ratio due to the constraint of the number of gears, which increases the mechanism cost and reduces the reliability.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: provided are a two-speed transmission shift actuator and a transmission, which can reduce the number of transmission chains and parts.
The utility model discloses a solve the technical scheme who above-mentioned technical problem took and be: the utility model provides a two grades of derailleur actuating mechanism that shifts, includes the motor of shifting gears which characterized in that: the gear shifting motor is provided with a motor shaft, and the output end of the motor shaft is a worm shaft; the actuating mechanism also comprises a sector worm wheel, and the sector worm wheel and the worm shaft are mutually meshed to form a worm and gear structure; a shifting block used for pushing a gear shifting block of the transmission is arranged at the non-fan-shaped end of the fan-shaped worm wheel, and the swinging direction of the shifting block is consistent with the rotating direction of the fan-shaped worm wheel; the fan-shaped worm wheel is supported and fixed in the actuating mechanism through a supporting shaft.
According to the scheme, the supporting shaft comprises a round shaft; the fan-shaped worm wheel is fixedly connected with the circular shaft, and the axial rotation direction of the circular shaft is consistent with the rotation direction of the fan-shaped worm wheel.
According to the scheme, the fan-shaped worm wheel is provided with a circle center corresponding to the fan shape, a through hole is formed in the circle center, and the fan-shaped worm wheel is sleeved with the round shaft through the through hole; the round shaft is provided with a threaded hole, the fan-shaped worm gear is provided with a mounting hole corresponding to the threaded hole, and screws penetrate through the mounting hole and the threaded hole.
According to the scheme, the tail end of the round shaft is provided with the shifting piece, the shifting piece is provided with the angular displacement sensor used for acquiring the angular displacement of the shifting piece, and the angular displacement of the shifting piece is equal to the rotating angle of the fan-shaped worm wheel.
According to the scheme, the actuating mechanism further comprises a shell, and the tail end of the worm shaft is rotatably connected with the shell.
A transmission, characterized by: the transmission comprises the two-gear transmission gear shifting actuating mechanism.
The utility model has the advantages that:
1. the gear shifting mechanism has the advantages that the gear is directly adopted as the transmission mechanism to achieve speed reduction and torque increase, the worm wheel is provided with the shifting head to achieve gear shifting action, the number of parts, the whole volume and a transmission chain are reduced, a large reduction ratio can be obtained, and meanwhile, the gear shifting motor with small torque and small current is selected, so that the current of the gear shifting motor is reduced, the current load of a controller and the gear shifting motor is reduced, the reliability of a product is improved, and the cost of the product is reduced.
2. The angular displacement sensor is arranged on the supporting shaft, so that the rotation angle of the worm wheel which is the same as the rotation displacement of the supporting shaft is obtained, and the detection of the gear shifting position is realized.
3. The supporting shaft is connected with the worm wheel through the round shaft and the screw, so that the processing is more convenient and simpler, and the requirement on the processing technology is reduced.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural view of the support shaft.
In the figure: the gear shifting device comprises a gear shifting motor 1, a worm shaft 2, a sector worm wheel 3, a support shaft 4, a shifting head 5 and a shifting piece 4-1.
Detailed Description
The present invention will be further described with reference to the following specific examples and accompanying drawings.
The utility model provides a two grades of derailleur actuating mechanism that shifts, as shown in fig. 1, including gear shifting motor 1, gear shifting motor 1's axle divide into two parts, some installs in the motor, for a part of electric motor rotor subassembly, another part processing is the worm, so worm axle and motor shaft structure as an organic whole, the output of motor shaft is worm axle 2 promptly, when the motor circular telegram was operated, worm axle 2 together rotated. The gear shifting motor 1 is installed on a shell of the actuating mechanism, and the tail end of the worm shaft 2 is rotatably connected with the shell, so that the worm shaft 2 is supported, and the stability of the worm shaft 2 is improved.
The actuating mechanism further comprises a sector worm wheel 3, the sector worm wheel 3 and the worm shaft 2 are meshed with each other to form a worm and gear structure, and the worm shaft 2 is in active rotary motion to drive the sector worm wheel 3 to rotate. Fan-shaped end of fan-shaped worm wheel 3 is equipped with the shifting block 5 that is used for promoting the derailleur shifting block, and when fan-shaped worm wheel 3 was rotary motion, shifting block 5 of lower part can swing, and the direction of swing is unanimous with fan-shaped worm wheel 3's direction of rotation to drive the derailleur shifting block and carry out the motion of shifting.
The fan-shaped worm wheel 3 is supported and fixed in the actuator by a support shaft 4. Further, as shown in fig. 2, the support shaft 4 includes a circular shaft; the fan-shaped worm wheel 3 is fixedly connected with the circular shaft. The axial rotation direction of the circular shaft is consistent with the rotation direction of the sector worm wheel 3. The sector worm wheel 3 and the round shaft are fixed in a plurality of ways, in the embodiment, the sector worm wheel 3 is provided with a circle center corresponding to a sector, a through hole is formed in the circle center, and the sector worm wheel 3 is sleeved with the round shaft through the through hole; the round shaft is provided with a threaded hole, the fan-shaped worm wheel 3 is provided with a mounting hole corresponding to the threaded hole, screws penetrate through the mounting hole and the threaded hole, and the fan-shaped worm wheel 3 and the supporting shaft 4 are fixedly connected through the screws. The connection mode of the round shaft and the screw is adopted, on the basis of ensuring the fixed connection between the supporting shaft 4 and the fan-shaped worm wheel 3, the processing is easier, and the requirements of the processing technology and the installation precision are reduced.
Still further, the tail end of the round shaft is provided with a shifting piece 4-1, the shifting piece 4-1 is provided with an angular displacement sensor used for acquiring the angular displacement of the shifting piece, and the angular displacement of the shifting piece is equal to the rotation angle of the fan-shaped worm wheel 3. The output of the angular displacement sensor is connected to a controller of the transmission to assist the transmission in identifying the shift position. The utility model discloses angle displacement sensor's the purpose that sets up only is for acquireing turned angle, and the discernment of specifically how to shift the position is not the utility model discloses a protection point does not expand the description here.
On this basis, the utility model discloses still protect the derailleur that has above-mentioned two grades of derailleurs actuating mechanism that shifts.
The above embodiments are only used for illustrating the design ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, and the protection scope of the present invention is not limited to the above embodiments. Therefore, all the equivalent changes or modifications made according to the principles and design ideas disclosed by the present invention are within the protection scope of the present invention.
Claims (6)
1. The utility model provides a two grades of derailleur actuating mechanism that shifts, includes the motor of shifting gears which characterized in that: the gear shifting motor is provided with a motor shaft, and the output end of the motor shaft is a worm shaft; the actuating mechanism also comprises a sector worm wheel, and the sector worm wheel and the worm shaft are mutually meshed to form a worm and gear structure; a shifting block used for pushing a gear shifting block of the transmission is arranged at the non-fan-shaped end of the fan-shaped worm wheel, and the swinging direction of the shifting block is consistent with the rotating direction of the fan-shaped worm wheel; the fan-shaped worm wheel is supported and fixed in the actuating mechanism through a supporting shaft.
2. The two speed transmission shift actuator of claim 1, wherein: the supporting shaft comprises a round shaft; the fan-shaped worm wheel is fixedly connected with the circular shaft, and the axial rotation direction of the circular shaft is consistent with the rotation direction of the fan-shaped worm wheel.
3. The two speed transmission shift actuator of claim 2, wherein: the fan-shaped worm wheel is provided with a circle center corresponding to the fan shape, a through hole is formed in the circle center, and the fan-shaped worm wheel is sleeved with the round shaft through the through hole; the round shaft is provided with a threaded hole, the fan-shaped worm gear is provided with a mounting hole corresponding to the threaded hole, and screws penetrate through the mounting hole and the threaded hole.
4. The two speed transmission shift actuator of claim 2 or 3, wherein: the tail end of the round shaft is provided with a shifting piece, an angular displacement sensor used for acquiring the angular displacement of the shifting piece is arranged on the shifting piece, and the angular displacement of the shifting piece is equal to the rotating angle of the fan-shaped worm wheel.
5. The two speed transmission shift actuator of claim 1, wherein: the actuating mechanism further comprises a shell, and the tail end of the worm shaft is rotatably connected with the shell.
6. A transmission, characterized by: the transmission comprises a two-speed transmission gear shift actuator according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921344998.1U CN211039640U (en) | 2019-08-19 | 2019-08-19 | Two-gear transmission gear shifting actuating mechanism and transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921344998.1U CN211039640U (en) | 2019-08-19 | 2019-08-19 | Two-gear transmission gear shifting actuating mechanism and transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211039640U true CN211039640U (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921344998.1U Active CN211039640U (en) | 2019-08-19 | 2019-08-19 | Two-gear transmission gear shifting actuating mechanism and transmission |
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| Country | Link |
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| CN (1) | CN211039640U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738475A (en) * | 2022-03-09 | 2022-07-12 | 江苏理工学院 | Gear shifting executing device for electric automobile |
-
2019
- 2019-08-19 CN CN201921344998.1U patent/CN211039640U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738475A (en) * | 2022-03-09 | 2022-07-12 | 江苏理工学院 | Gear shifting executing device for electric automobile |
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