CN211501607U

CN211501607U - Gear shifting mechanism of new energy automobile

Info

Publication number: CN211501607U
Application number: CN201922436230.3U
Authority: CN
Inventors: 李磊; 史宫男; 吕小科
Original assignee: Suzhou Lvkon Transmission S&T Co Ltd
Current assignee: Suzhou Lvkon Transmission S&T Co Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-15
Anticipated expiration: 2029-12-30

Abstract

The utility model provides a new energy automobile gearshift, it makes gearshift's volume diminish, and improves gearshift's drive ratio, has improved shift control's precision. The controller has been arranged to one side of motor, the output of the motor shaft of motor includes first eccentric output, the coaxial output of second, the periphery of first eccentric output is equipped with the cycloid wheel through first bearing cover, motor casing correspond to set firmly the casing on the terminal surface of cycloid wheel, the coaxial output of second arrange in the relative outside of first eccentric output, be close to the casing is arranged, the coaxial output of second is equipped with output drive mechanism's driving disc through second bearing cover, output drive mechanism includes driving disc, drive gear, the orientation of driving disc the terminal surface ring cloth of cycloid wheel has a plurality of evagination round pin axles, the corresponding terminal surface of cycloid wheel is provided with a plurality of transmission pinholes, the internal diameter of transmission pinhole is greater than the external diameter of evagination round pin axle.

Description

Gear shifting mechanism of new energy automobile

Technical Field

The utility model relates to a gearshift's technical field specifically is a new energy automobile gearshift.

Background

The existing gear shifting mechanism of the motor which transmits through the gear can only transmit two-stage gears at most under the limitation of the height and the radius of the design space of the existing new energy automobile, the maximum speed ratio of the two-stage gears is not more than 10 at most, the precision of gear shifting control is relatively poor, and when the gear shifting precision is required to be improved, the required corresponding gear shifting mechanism is large in height and not beneficial to the automobile body arrangement of the new energy automobile.

Disclosure of Invention

To the problem, the utility model provides a new energy automobile gearshift, it makes gearshift's volume diminish, and improves gearshift's drive ratio, the precision of shift control.

The utility model provides a new energy automobile gearshift which characterized in that: the motor comprises a motor, a controller is arranged on one side of the motor, the output end of a motor shaft of the motor comprises a first eccentric output end and a second coaxial output end, a cycloidal gear is sleeved on the periphery of the first eccentric output end through a first bearing, a casing is fixedly arranged on the end face of the casing corresponding to the cycloidal gear, the second coaxial output end is arranged on the opposite outer side of the first eccentric output end and close to the casing, a transmission disc of an output transmission mechanism is sleeved on the second coaxial output end through a second bearing, the output transmission mechanism comprises a transmission disc and a transmission gear, a plurality of outward protruding pin shafts are annularly distributed on the end face of the transmission disc facing the cycloidal gear, a plurality of transmission pin holes are formed in the corresponding end face of the cycloidal gear, the inner diameter of each transmission pin hole is larger than the outer diameter of the outward protruding pin shaft, and the corresponding outward protruding pin shafts, the transmission pin hole and the outer convex pin shaft are arranged in different shafts, so that the cycloidal gear has a swing space, a contact point exists between the outer convex pin shaft and the transmission pin hole at any position of the swing of the cycloidal gear, a pin gear is fixedly arranged at the position of an outer ring of an inner ring of the casing corresponding to the outer teeth of the cycloidal gear, the outer teeth of the cycloidal gear are meshed with the inner convex teeth of the corresponding area of the pin gear in a swing state, an angle output gear is arranged at the outer ring of the transmission disc, the angle output gear is meshed and connected with a sensor gear, a sensor is arranged on the sensor gear, the sensor is electrically connected with the controller, and the outer end of the transmission gear protrudes out of the casing and is.

It is further characterized in that: the shell of the end face of the motor, on which the shell is arranged, is removed, and the shell is directly covered, and the cycloid wheel is arranged in the inner cavity of the shell of the motor, so that the whole mechanism is small in size and convenient to arrange;

the sensor gears are arranged on the corresponding sides of the controller, and the sensor gears are arranged in the corresponding concave cavities of the machine shell, so that the whole structure is small in size;

the outer ring of the inner cavity of the motor is provided with a stator, a motor shaft is arranged at the central position of the inner cavity of the motor, a motor rotor and magnetic steel are sleeved in a cavity between the motor shaft and the stator, the motor rotor and the magnetic steel drive the motor shaft to rotate, and then a first eccentric output end drives the cycloid wheel to swing through a first bearing sleeve, so that the cycloid wheel rotates along inner convex teeth of a corresponding region of the needle gear, and then a pin shaft is driven to rotate, and a transmission disc is driven to rotate at a corresponding angle.

After the technical scheme is adopted, the motor shaft drives the cycloid wheel, the cycloid wheel drives the transmission disc through the needle gear on the outer ring to drive the transmission gear to rotate, so that the gear shifting transmission rack is driven to shift gears, the meshing curve is not a general involute but a cycloid, the stroke of a unit corner is far larger than the involute through the steepest descent characteristic of the cycloid, the meshing curve is that the meshing curve between the cycloid wheel and the needle gear is meshed with the involute gear, the transmission speed ratio can reach 20 or even 30, the radius of the cycloid wheel does not need to be increased relative to a motor and a controller, the height of the cycloid wheel is smaller than that of a two-stage transmission gear, the size of the gear shifting mechanism is reduced, the transmission ratio of the gear shifting mechanism is improved, and the accuracy of gear shifting control is improved.

Drawings

Fig. 1 is a schematic structural view of a perspective view of the present invention;

FIG. 2 is a schematic sectional view of the front view of the present invention;

FIG. 3 is a schematic view of the connection structure of the cycloid gears, the pin gears and the pins of the present invention;

the names corresponding to the sequence numbers in the figure are as follows:

the device comprises a motor 1, a controller 2, a motor shaft 3, a first eccentric output end 4, a second coaxial output end 5, a first bearing 6, a cycloidal gear 7, a shell 8, a machine shell 9, a second bearing 10, an output transmission mechanism 11, a transmission disc 111, a transmission gear 112, an outer convex pin shaft 12, a transmission pin hole 13, outer teeth 71, a pin gear 14, inner convex teeth 141, an angle output gear 113, a sensor gear 15, a sensor 16, a stator 17, a motor rotor and magnetic steel 18.

Detailed Description

A new energy automobile gearshift, see fig. 1-3: the device comprises a motor 1, a controller 2 is arranged on one side of the motor 1, the output end of a motor shaft 3 of the motor 1 comprises a first eccentric output end 4 and a second coaxial output end 5, a cycloidal gear 7 is sleeved on the periphery of the first eccentric output end 4 through a first bearing 6, a casing 9 is fixedly arranged on the end surface of a casing 8 of the motor 1 corresponding to the cycloidal gear 7, the second coaxial output end 5 is arranged on the opposite outer side of the first eccentric output end 4 and close to the casing 9, the second coaxial output end 5 is sleeved with a transmission disc 111 of an output transmission mechanism 11 through a second bearing 10, the output transmission mechanism 11 comprises a transmission disc 111 and a transmission gear 112, a plurality of outward protruding pin shafts 12 are distributed on the end surface ring of the transmission disc 111 facing the cycloidal gear 7, a plurality of transmission pin holes 13 are arranged on the corresponding end surface of the cycloidal gear 7, the inner diameters of the transmission pin holes 13 are larger than the outer diameters, the transmission pin hole 13 and the outer convex pin shaft 12 are arranged in different shafts, so that the cycloidal gear has a swing space, a contact point exists between the outer convex pin shaft 12 and the transmission pin hole 13 at any swing position of the cycloidal gear, a pin gear 14 is fixedly arranged at the position of the inner ring of the machine shell 9 corresponding to the outer ring of the outer teeth 71 of the cycloidal gear 7, the outer teeth 71 of the cycloidal gear 7 are meshed with the inner convex teeth 141 of the corresponding area of the pin gear 14 in a swing state, an angle output gear 113 is arranged at the outer ring of the transmission disc 111, the angle output gear 113 is meshed with a sensor gear 15, a sensor 16 is arranged on the sensor gear 15, the sensor 16 is electrically connected with the controller 2, and the outer end of the transmission gear 112 is protruded out of the machine shell 9 and is.

The casing of the end face of the motor 1, which is provided with the casing, is removed, and the casing 9 is directly covered, and the cycloid wheel 7 is arranged in the inner cavity of the casing 8 of the motor 1, so that the whole mechanism is small in size and convenient to arrange;

the sensor gears 15 are arranged on the corresponding sides of the controller 2, and the sensor gears 15 are arranged in the corresponding inner concave cavities 91 of the machine shell 9, so that the whole structure is small in size;

the outer loop of the inner chamber of motor 1 is provided with stator 17, the central point of the inner chamber of motor 1 puts and is provided with motor shaft 3, the cover is equipped with motor rotor and magnet steel 18 in the cavity between motor shaft 3 and the stator 17, motor rotor and magnet steel 18 drive motor shaft 3 rotate and then first eccentric output 4 drives the cycloid wheel 7 swing through the suit of first bearing 6, make cycloid wheel 7 rotate along the corresponding regional interior convex tooth 141 of pin gear 14, and then drive the rotation of evagination round pin axle 12, drive driving disc 111 and carry out the rotation that corresponds the angle.

The working principle is as follows: the motor shaft drives the cycloidal gear, the cycloidal gear drives the drive plate through the pin gear of the outer lane, drive the drive gear to rotate, thus drive the transmission rack of shifting, shift gears, its meshing curve is not the ordinary involute but the cycloid, through the characteristic of the steepest descent line of cycloid, make the stroke that the unit corner goes through much bigger than involute, the meshing curve is, the meshing between involute gear and the meshing of pin gear, its transmission velocity ratio can reach 20, even 30, its radius does not need to increase relative to motor and controller, the height is smaller than two-stage drive gear too, it makes the volume of the gear shifting mechanism turn small, and improve the transmission ratio of the gear shifting mechanism, has improved the precision of the gear shifting control; the mechanism is compact in structure and small in size, compared with the traditional worm gear and rack transmission, the volume is reduced by fifty percent, the weight can be reduced by thirty-five percent, the transmission can be independently controlled, and signal feedback is collected.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a new energy automobile gearshift which characterized in that: the motor comprises a motor, a controller is arranged on one side of the motor, the output end of a motor shaft of the motor comprises a first eccentric output end and a second coaxial output end, a cycloidal gear is sleeved on the periphery of the first eccentric output end through a first bearing, a casing is fixedly arranged on the end face of the casing corresponding to the cycloidal gear, the second coaxial output end is arranged on the opposite outer side of the first eccentric output end and close to the casing, a transmission disc of an output transmission mechanism is sleeved on the second coaxial output end through a second bearing, the output transmission mechanism comprises a transmission disc and a transmission gear, a plurality of outward protruding pin shafts are annularly distributed on the end face of the transmission disc facing the cycloidal gear, a plurality of transmission pin holes are formed in the corresponding end face of the cycloidal gear, the inner diameter of each transmission pin hole is larger than the outer diameter of the outward protruding pin shaft, and the corresponding outward protruding pin shafts, the transmission pin hole and the outer convex pin shaft are arranged in different shafts, a contact point exists between the outer convex pin shaft and the transmission pin hole at any swinging position of the swinging wheel, a pin gear is fixedly arranged at the position, corresponding to the outer ring of the outer teeth of the cycloidal gear, of the inner ring of the machine shell, the inner convex teeth of the corresponding area of the pin gear are meshed in the swinging state of the outer teeth of the cycloidal gear, an angle output gear is arranged on the outer ring of the transmission disc, the angle output gear is meshed and connected with a sensor gear, a sensor is arranged on the sensor gear, the sensor is electrically connected with the controller, and the outer end of the transmission gear protrudes out of the machine shell and is meshed and connected.

2. The new energy automobile gear shifting mechanism is characterized in that: the motor is characterized in that the casing of the motor, which is provided with the end face of the casing, is removed and directly covered with the casing, and the cycloid wheel is arranged in the inner cavity of the casing of the motor.

3. The new energy automobile gear shifting mechanism is characterized in that: the sensor gears are arranged on corresponding sides of the controller, and the sensor gears are arranged in corresponding inner concave cavities of the machine shell.

4. The new energy automobile gear shifting mechanism is characterized in that: the outer ring of the inner cavity of the motor is provided with a stator, the central position of the inner cavity of the motor is provided with a motor shaft, and a motor rotor and magnetic steel are sleeved in a cavity between the motor shaft and the stator.