CN220221049U - Motor anti-lock structure of electric vehicle - Google Patents

Abstract

The utility model provides a motor anti-lock structure of an electric vehicle, which comprises a motor (1), wherein a flywheel is connected to an end cover on one side of the motor (1), the flywheel is used for unidirectionally driving the motor (1) to rotate, the flywheel comprises an inner ring (3), an outer ring (4) and a sealing cover (5), a ball (8) and a ratchet unidirectional driving structure (9) are arranged between the inner ring (3) and the outer ring (4), an annular recess (10) is arranged on the end surface of one side of the end cover, the annular recess (10) is arranged around a protruding shaft (7), the diameter of the periphery of the annular recess (10) is smaller than the diameter of the outer ring (4), and the annular recess (10) is used for enabling the flywheel to be close to one side of the end cover so that the distance between the flywheel and two adjacent sides of the end cover is smaller than the axial width of a chain (6); the motor anti-lock structure is favorable for reducing the blocking condition of the motor.

Description

Motor anti-lock structure of electric vehicle

Technical Field

The utility model relates to the technical field of electric vehicles, in particular to an anti-lock structure of a motor of an electric vehicle.

Background

The electric bicycle is generally two-wheeled or three-wheeled, with the propulsion of new national standards, the structure of manual riding is required to be increased, namely, the transmission structure of pedals, chains and flywheels is increased, generally speaking, the flywheels are connected with the motor of the rear wheels in a unidirectional rotation way, namely, when a user pedals the pedals forwards, the flywheels are driven to rotate forwards through the transmission of the chains, the flywheels rotate forwards to drive the motor to rotate forwards, and the motor is provided with tires, so that the motor rotates forwards to drive the tires to rotate forwards, and the electric bicycle runs forwards, and when the user pedals the pedals backwards, the flywheels idle, so that riding is comfortable and safe. Due to the addition of the manual riding structure, when the battery is out of power, a user can still ride the electric vehicle without pushing.

As can be seen from the above, although the new solution greatly facilitates the use of the user, some problems, such as the problem of the chain getting stuck after falling to the motor side, are also caused.

Disclosure of Invention

The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing an anti-lock structure of a motor of an electric vehicle, which is beneficial to reducing the blocking condition of the motor.

Compared with the prior art, the utility model provides a motor anti-lock structure of an electric vehicle, which comprises a motor, wherein an end cover on one side of the motor is connected with a flywheel, the flywheel is used for unidirectionally driving the motor to rotate, the flywheel comprises an inner ring, an outer ring and a sealing cover, the outer ring is arranged as a chain wheel for connecting a chain, the end cover is provided with a protruding shaft towards one side of the flywheel, the protruding shaft is fixedly connected with the inner ring, a ball and ratchet unidirectional driving structure is arranged between the inner ring and the outer ring, the sealing cover is used for limiting the ball and ratchet unidirectional driving structure between the inner ring and the outer ring, the end surface of the end cover on one side of the flywheel is provided with an annular recess, the annular recess is arranged around the protruding shaft, the diameter of the periphery of the annular recess is smaller than the diameter of the outer ring, and the annular recess is used for enabling the flywheel to be close towards one side of the end cover so that the distance between the flywheel and two adjacent sides of the end cover is smaller than the axial width of the chain.

As an improvement, the outer ring comprises a body and a sprocket arranged in the middle of the circumference of the body, the diameter of the periphery of the annular recess is between the diameter of the circumference of the sprocket and the diameter of the body, the inner side end of the body is sleeved with the recess, and the width of the annular space formed by sleeving is smaller than the height of the chain.

As an improvement, the inner side end surface of the inner ring is attached to the bottom surface of the concave.

As an improvement, the inner side end of the inner ring is provided with an annular end face protruding to one side of the concave and connected with the bottom surface of the concave in a pasting and positioning way.

As improvement, the end face of the end cover is convexly provided with a protruding part towards one side of the flywheel, and the protruding shaft and the annular recess are both positioned on the protruding part.

As an improvement, the protruding part adopts a truncated cone-shaped protruding part.

After adopting the structure, compared with the prior art, the utility model has the following advantages: in the technical scheme of this disclosure, the end cover be equipped with protruding axle to flywheel one side, this protruding axle and inner circle fixed connection, be provided with ball and ratchet one-way drive structure between inner circle and the outer lane, the closing cap is used for spacing ball and ratchet one-way drive structure between inner circle and outer lane, the terminal surface that the end cover is located flywheel one side be equipped with annular sunken, this annular sunken surrounds protruding axle setting, the diameter of this annular sunken periphery is less than the diameter of outer lane, this annular sunken is used for making the flywheel draw close to one side of end cover so that the interval between the two adjacent sides of flywheel and end cover is less than the axial width of chain, consequently, when the chain falls out to one side of end cover, because this interval is less than the axial width of chain, so the chain can't get into between the two adjacent sides between, and then can not block between the two adjacent sides, then, be favorable to reducing the dead condition of motor card.

Drawings

Fig. 1 is a perspective view of an anti-lock structure of a motor of an electric vehicle.

Fig. 2 is a perspective view of a motor part of an anti-lock structure of a motor of an electric vehicle.

Fig. 3 is a plan view of an anti-lock structure of a motor of an electric vehicle.

Fig. 4 is a cross-sectional view in the A-A direction.

Fig. 5 is an enlarged B view.

Fig. 6 is an enlarged schematic view of fig. 5 with a portion of the chain removed.

The drawing shows that 1, a motor, 2, a right end cover, 3, an inner ring, 4, an outer ring, 5, a sealing cover, 6, a chain, 7, a protruding shaft, 8, a ball, 9, a ratchet unidirectional driving structure, 10, an annular recess, 11, between two adjacent sides, 12, a sprocket, 13, an annular interval, 14, an annular end face, 15, a protruding part, 16, a rotating supporting shaft, 17 and a body.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

The present utility model is described in further detail below:

as shown in fig. 1 to 6, there is an anti-lock structure of a motor of an electric vehicle, wherein the motor 1 of the electric vehicle is also called as an in-wheel motor 1, the motor 1 comprises a rotation support shaft 16 fixed on a frame of the electric vehicle, a left end cover and a right end cover rotatably connected with the rotation support shaft 16, the left end cover and the right end cover enclose a cavity, and internal components of the motor 1, such as a coil, a permanent magnet and the like, are arranged in the cavity.

In this example, as shown in fig. 4, the right end cover 2 is connected with a flywheel, the flywheel comprises an inner ring 3, an outer ring 4 and a cover 5, the outer ring 4 is arranged to be used for connecting with a chain wheel of a chain 6, the right end cover 2 is provided with a protruding shaft 7 towards one side of the flywheel, the protruding shaft 7 is fixedly connected with the inner ring 3, a ball 8 and a ratchet unidirectional driving structure 9 are arranged between the inner ring 3 and the outer ring 4, the ratchet unidirectional driving structure 9 is a common jack structure, the cover 5 is used for limiting the ball 8 and the ratchet unidirectional driving structure 9 between the inner ring 3 and the outer ring 4, an annular recess 10 is arranged on the end face of the right end cover 2 on one side of the flywheel, the annular recess 10 is arranged around the protruding shaft 7, the diameter of the periphery of the annular recess 10 is smaller than the diameter of the outer ring 4, and the annular recess 10 is used for enabling the flywheel to be close to one side of the end cover so that the distance between the flywheel and two adjacent sides of the end cover is smaller than the axial width of the chain 6. By such a design, the distance between two adjacent sides 11 is smaller than the axial width of the chain 6, so that even if the chain 6 falls out, the chain is not easy to be clamped between the two adjacent sides 11. In this example, as shown in fig. 6, the right end face of the right end cap 2 between two adjacent sides 11 is located between the circumferential portion of the annular recess 10 and the left side face of the sprocket 12.

In some embodiments, as shown in fig. 1 and 6, the outer ring 4 includes a body 17 and a sprocket 12 disposed at a middle part of a circumference of the body 17, a diameter of an outer circumference of the annular recess 10 is between a diameter of a circumference of the sprocket 12 and a diameter of the body 17, an inner end of the body 17 is sleeved with the recess, and a width of an annular space 13 formed by sleeving is smaller than a height of the chain 6. After the design, because the width of the annular space 13 is smaller than the height of the chain 6, the fallen chain 6 cannot be axially clamped into the annular space 13, and the problem of clamping caused by the axial clamping into the annular space 13 is avoided.

In some embodiments, as shown in fig. 1 and 6, the inner end surface of the inner ring 3 is in positioning connection with the bottom surface of the recess. After the design, on the one hand, the assembly is convenient, the distance between two adjacent sides 11 is convenient to control, on the other hand, the inner ring 3 is mainly subjected to axial force, and the outer ring 4 is prevented from bearing the main axial force, so that the structure is more reliable and stable.

In some embodiments, as shown in fig. 5, the inner end of the inner ring 3 is provided with an annular end surface 14 protruding from the inner end surface of the inner ring 3 towards the concave side, and the annular end surface 14 is in positioning connection with the concave bottom surface. By such design, the amount of finish machining is reduced, i.e., the finish machining of the inner end surface of the whole inner ring 3 is not required.

In some embodiments, as shown in fig. 2, 4 and 5, the end face of the right end cover 2 is convexly provided with a protrusion 15 towards the flywheel side, and the protruding shaft 7 and the annular recess 10 are both located on the protrusion 15. Generally, the left end cover and the right end cover are not too thick, if the right end cover 2 is directly provided with the annular recess 10, which is not beneficial to strength, in this example, the protruding portion 15 is arranged to axially thicken the protruding portion 15 protruding toward one side of the flywheel, so that on one hand, the mechanical structure is optimized, and on the other hand, the annular recess 10 with better depth is processed, thereby being beneficial to optimizing the overall structure.

In some embodiments, as shown in fig. 2, the protruding portion 15 is a truncated cone-shaped protruding portion 15, which is beneficial to dynamic balance, and the truncated cone-shaped protruding portion 15 has the advantage of a wide base, and meanwhile, the weight is not increased more, so that the design is a more optimized scheme.

The foregoing description is only illustrative of the present utility model and is therefore intended to cover all such modifications and changes in form, details, and materials as fall within the true spirit and scope of the utility model.

Claims (6)

1. The utility model provides an anti-lock structure of motor of electric motor car, includes motor (1), and one side end cover of motor (1) is connected with the flywheel, and the flywheel is used for unidirectionally driving motor (1) to rotate, its characterized in that, the flywheel includes inner circle (3), outer lane (4) and closing cap (5), and outer lane (4) set up to the sprocket that is used for connecting chain (6), the end cover be equipped with protruding axle (7) to flywheel one side, this protruding axle (7) and inner circle (3) fixed connection, be provided with ball (8) and ratchet unidirectional drive structure (9) between inner circle (3) and outer lane (4), closing cap (5) are used for spacing ball (8) and ratchet unidirectional drive structure (9) between inner circle (3) and outer lane (4), the end face that the end cover is located flywheel one side be equipped with annular recess (10), this annular recess (10) encircle protruding axle (7) setting, the diameter of the periphery of this annular recess (10) is less than the diameter of outer lane (4), this annular recess (10) are used for making the flywheel draw close to one side so that the interval between flywheel and the two adjacent side of end cover (11) is less than the axial width of chain (6).

2. The motor anti-lock structure of an electric vehicle according to claim 1, wherein the outer ring (4) comprises a body (17) and a sprocket (12) arranged in the middle of the circumference of the body (17), the diameter of the outer circumference of the annular recess (10) is between the diameter of the circumference of the sprocket (12) and the diameter of the body (17), the inner side end of the body (17) is sleeved with the recess, and the width of the annular space (13) formed by sleeving is smaller than the height of the chain (6).

3. The motor anti-lock structure of an electric vehicle according to claim 1 or 2, wherein the inner side end surface of the inner ring (3) is positioned and connected with the bottom surface of the recess.

4. A motor anti-lock structure of an electric vehicle according to claim 3, wherein the inner side end of the inner ring (3) is provided with an annular end face (14) protruding from the inner side end face of the inner ring (3) toward the concave side, and the annular end face (14) is positioned and connected with the concave bottom face in a sticking manner.

5. The motor anti-lock structure of an electric vehicle according to claim 1, wherein the end face of the end cover is provided with a protruding portion (15) protruding toward the flywheel, and the protruding shaft (7) and the annular recess (10) are both located at the protruding portion (15).

6. Motor anti-lock structure of electric vehicle according to claim 5, characterized in that the protruding part (15) is a truncated cone-shaped protruding part (15).