CN218124488U

CN218124488U - Hub motor of inside lock car

Info

Publication number: CN218124488U
Application number: CN202220570975.8U
Authority: CN
Inventors: 熊子儒
Original assignee: Suzhou Xiongda Motor Co ltd
Current assignee: Suzhou Xiongda Motor Co ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-12-23
Anticipated expiration: 2032-03-14

Abstract

The utility model discloses an in-wheel motor of inside lock car, include: the fixing shaft comprises a first shaft body and a second shaft body which are coaxially arranged; the two ends of the hub shell are coaxially and rotatably arranged on the first shaft body and the second shaft body respectively; the output shaft is coaxially arranged between the first shaft body and the second shaft body; the rotor core is coaxially and rotatably arranged on the output shaft through a one-way bearing, and the outer circumferential surface of the rotor core is provided with magnetic steel; the locking mechanism is arranged on the first shaft body and comprises a push rod and a driving source for driving the push rod to stretch and retract, and a positioning groove corresponding to the push rod is formed in the end part of the output shaft; the utility model discloses be equipped with locking mechanism, also can be with wheel hub locking, it is safe convenient under the condition of outage.

Description

Hub motor of inside lock car

Technical Field

The utility model relates to a technical field of motor, concretely relates to in-wheel motor of inside lock car.

Background

In order to reduce energy consumption and environmental pollution, electric vehicles with zero pollution and zero emission are drawing more and more attention, and the electric vehicles driven by hub motors have been researched due to the advantages of simple mechanical transmission structure, high driving efficiency, low cost, and the like. The hub motor is a main driving part on the present electric power-assisted bicycle and similar travel tools, and is also widely applied to an electric carrier, an electric wheelchair, an electric forklift and the like, the structure of the hub motor mainly comprises a main shaft, a hub shell, a motor, a planetary speed reducing mechanism and a clutch, the main shaft is fixed with a frame of the bicycle, the hub shell is rotatably arranged on the main shaft, the shell of the motor is fixed with the main shaft through a bracket, an output shaft (driving shaft) end of the motor is assembled with the planetary speed reducing mechanism, the planetary speed reducing mechanism performs transmission speed reduction between the motor and a hub, and an output end of the planetary speed reducing mechanism is in transmission connection with an inner gear ring of the hub through the clutch; however, the existing hub motor has a complex structure and high production cost, has large resistance in the sliding process, is not beneficial to prolonging the endurance, has no locking structure, is not beneficial to preventing theft, has low safety, and is complex in use process and easy to lose the lock when a user usually adopts an external locking mode to prevent theft of the whole vehicle; therefore, there is a need for improvements and innovations necessary for the existing hub motors.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a sliding resistance is little and from in-wheel motor who takes locking structure.

In order to solve the technical problem, the utility model provides an in-wheel motor of inside lock car, include:

the fixing shaft comprises a first shaft body and a second shaft body which are coaxially arranged, and a space is arranged between the first shaft body and the second shaft body;

the two ends of the hub shell are coaxially and rotatably arranged on the first shaft body and the second shaft body respectively;

all install inside the wheel hub shell:

the output shaft is coaxially arranged between the first shaft body and the second shaft body, and two ends of the output shaft are respectively rotatably arranged on the first shaft body and the second shaft body;

the rotor core is coaxially and rotatably installed on the output shaft through a bearing set, the bearing set at least comprises a one-way bearing, and the outer circumferential surface of the rotor core is provided with magnetic steel;

the stator coil is installed between the first shaft body and the second shaft body, is coaxially arranged outside the magnetic steel, and forms a motor structure for driving the output shaft to rotate;

the speed reducing mechanism is arranged between the hub shell and the output shaft, and the rotating output shaft drives the hub shell to rotate through the speed reducing mechanism;

the locking mechanism is installed on first axis body, the locking structure includes push rod and the flexible driving source of drive push rod, the tip of output shaft be equipped with the constant head tank that the push rod corresponds, the driving source drive the push rod removes, and the corresponding tip of push rod inserts in the constant head tank, with will the output shaft locking.

As a further improvement, the inner of first axis body is equipped with the back lid that is located the wheel hub shell inside, the corresponding end of output shaft is rotated through first bearing and is installed on the back lid, the inner of second axis body is equipped with the preceding lid that is located the wheel hub shell inside, the corresponding end of output shaft is rotated through the second bearing and is installed on the preceding lid.

As a further improvement of the present invention, the two ends of the stator coil are fixed respectively on the front cover body and the rear cover body, and the stator coil is provided with a gap between the magnetic steels.

As a further improvement, the one end of the wheel hub shell is rotatably installed with the first shaft body through the third bearing, and the other end of the wheel hub shell is rotatably installed with the second shaft body through the fourth bearing.

As a further improvement, the split type wheel hub end cover is installed to the one end of wheel hub shell, and this wheel hub end cover passes through the fourth bearing rotates to be installed on the second axle body, the inboard of wheel hub end cover be equipped with the internal gear of axle center is with the output shaft.

As the utility model discloses a further improvement, reduction gears includes first external gear and pivot, the pivot is passed through the fifth bearing and is rotated and install on the second shaft body, just the pivot with the second shaft body is parallel, the one end coaxial arrangement of pivot has first external gear, the other end of pivot is coaxial to be equipped with rather than integrated into one piece's second external gear, first external gear with the third external gear meshing that the output shaft corresponds the coaxial setting of end forms gear drive, the second external gear with the internal gear meshing forms gear drive.

As a further improvement, the push rod includes cylindric slip iron core and the coaxial locating lever and the guide arm that sets up at slip iron core both ends at the middle part, just the locating lever is equipped with the location shaft shoulder with the junction of slip iron core, the driving source passes through magnetic drive the slip iron core motion, the slip iron core drives the locating lever inserts in the constant head tank with the locating lever adaptation.

As a further improvement, the driving source is including being cylindric drive coil and permanent magnet, drive coil and permanent magnet coaxial inlay fix on the first axis body, just the permanent magnet is located the drive coil is close to the one end of output shaft, the push rod is coaxial to be run through drive coil and permanent magnet form sliding connection, the locating lever orientation of push rod the constant head tank and with the constant head tank axial corresponds.

As a further improvement, the one end that the permanent magnet is close to the output shaft is equipped with rather than the holding ring with the axle center, install the ring form condom rather than with the axle center through interference fit on the holding ring, and the coaxial suit of condom is in the outside of locating lever forms sliding connection, the holding ring passes through the fix with screw on the first axis body, the head location of screw is in on the outer terminal surface of condom.

As a further improvement, the outside cover of guide arm is equipped with the spring, the both ends difference butt of spring at first axis body with on the slip iron core, work as after the push rod retracts completely, the elasticity that the spring was applyed to the slip iron core is less than the magnetic force that the permanent magnet was applyed in the inboard to the slip iron core.

The utility model has the advantages that:

the utility model relates to an in-wheel motor of inside lock car, firstly, the utility model discloses a through one-way bearing installation between rotor core and the output shaft, when rotor core does not export power, namely when the wheel hub shell is in the state of sliding, the wheel hub shell drives the output shaft to rotate through the reduction gears, and rotor core just can not rotate along with the output shaft synchronization because of the existence of one-way bearing, so can effectively reduce the sliding resistance, indirectly reduce the energy consumption; secondly, the locking mechanism for locking the output shaft is arranged in the utility model, so that the hub shell can be locked at any time according to requirements, and the utility model has the advantages of convenient use, safety and reliability; meanwhile, the push rod can be ensured to be always inserted into the positioning groove through the spring to keep a locking state, and the hub shell can be kept locked after power failure; moreover, because the protective sheath is installed on the holding ring through interference fit, after the wheel hub shell pivoted in-process if the push rod inserted the holding groove because of unexpected mistake, can drive the protective sheath through the push rod because of the huge moment of torsion that the output shaft rotated the in-process and go to overcome interference fit's clamp force for the push rod can rotate with the output shaft synchronization, can prevent effectively that the wheel hub shell from being blocked suddenly and dying, avoids damaging the emergence of motor and incident, prevents to take place the accident.

Drawings

FIG. 1 is a schematic cross-sectional view of an in-wheel motor for an inside locking vehicle;

FIG. 2 is an enlarged view of A in FIG. 1;

the numbering in the figures illustrates: 1. a first shaft body; 2. a hub shell; 3. a rear cover body; 4. a stator coil; 5. magnetic steel; 6. a rotor core; 7. a front cover body; 8. a third external gear; 9. a first external gear; 10. a fifth bearing; 11. a second external gear; 12. an inner gear; 13. a hub end cap; 14. a fourth bearing; 15. a second shaft body; 16. a second bearing; 17. a one-way bearing; 18. an auxiliary bearing; 19. a first bearing; 20. a third bearing; 21. a condom; 22. a positioning ring; 23. a permanent magnet; 24. a drive coil; 25. a push rod; 26. a screw; 27. a rotating shaft; 28. an output shaft; 29. positioning a groove; 30. a spring; 31. a sliding iron core; 32. positioning a rod; 33. a guide bar; 34. and positioning the shaft shoulder.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Referring to fig. 1-2, the present invention provides an embodiment of an in-wheel motor for an internal locking vehicle;

an in-wheel motor for an interior lock vehicle, comprising:

the fixing shaft comprises a first shaft body 1 and a second shaft body 15 which are coaxially arranged, and a space is arranged between the first shaft body 1 and the second shaft body 15 and used for mounting an output shaft 28;

the two ends of the hub shell 2 are coaxially and rotatably arranged on the first shaft body 1 and the second shaft body 15 respectively;

all installed inside the hub shell 2:

the output shaft 28 is coaxially arranged between the first shaft body 1 and the second shaft body 15, and two ends of the output shaft 28 are respectively and rotatably installed on the first shaft body 1 and the second shaft body 15;

the rotor core 6 is coaxially and rotatably mounted on the output shaft 28 through a bearing set, the bearing set at least comprises one-way bearing 17, other auxiliary bearings 18 can be one-way bearings or ordinary bearings, and the outer circumferential surface of the rotor core 6 is provided with magnetic steel 5; when the rotor core 6 does not output power, that is, when the hub shell 2 is in a sliding state, the hub shell 2 drives the output shaft 28 to rotate through the speed reducing mechanism, and the rotor core 6 cannot synchronously rotate along with the output shaft 28 due to the existence of the one-way bearing 17, so that the sliding resistance can be effectively reduced, and the energy consumption is indirectly reduced;

the stator coil 4 is installed between the first shaft body 1 and the second shaft body 15, the stator coil 4 is coaxially arranged outside the magnetic steel 5, and the stator coil 4, the magnetic steel 5 and the rotor core 6 form a motor structure for driving the output shaft 28 to rotate;

a speed reduction mechanism installed between the hub shell 2 and an output shaft 28, through which the rotating output shaft 28 drives the hub shell 2 to rotate;

locking mechanism, locking mechanism installs on first axis body 1, locking structure includes the flexible driving source of push rod 25 and drive push rod 25, the tip of output shaft 28 be equipped with the constant head tank 29 that push rod 25 corresponds, the driving source drive push rod 25 removes, and the corresponding tip of push rod 25 inserts in the constant head tank 29, with will output shaft 28 locking, locking mechanism's setting can be as required at any time with the locking of wheel hub shell 2, convenient to use, safe and reliable.

In a specific embodiment of the present invention, the inner end of the first shaft body 1 is provided with a rear cover body 3 located inside the hub shell 2, the corresponding end of the output shaft 28 is rotatably installed on the rear cover body 3 through a first bearing 19, the inner end of the second shaft body 15 is provided with a front cover body 7 located inside the hub shell 2, the corresponding end of the output shaft 28 is rotatably installed on the front cover body 7 through a second bearing 16, two ends of the stator coil 4 are respectively fixed on the front cover body 7 and the rear cover body 3, and a gap is provided between the stator coil 4 and the magnetic steel 5.

The one end of wheel hub shell 2 is passed through third bearing 20 and is rotated the installation with the first axle body 1, the other end of wheel hub shell 2 is passed through fourth bearing 14 and is rotated the installation with the second axle body 15, split type wheel hub end cover 13 is installed to the one end of wheel hub shell 2, and this wheel hub end cover 13 passes through fourth bearing 14 rotates and installs on the second axle body 15, the inboard of wheel hub end cover 13 be equipped with the internal gear 12 of output shaft 28 axle center.

In a specific embodiment of the utility model, the reduction gears includes first external gear 9 and pivot 27, pivot 27 rotates through fifth bearing 10 and installs on the second axle body 15, just pivot 27 with the second axle body 15 is parallel, the one end coaxial arrangement of pivot 27 has first external gear 9, the other end coaxial of pivot 27 is equipped with rather than integrated into one piece's second external gear 11, first external gear 9 with the meshing of the coaxial third external gear 8 that sets up of output shaft 28 correspondence end forms gear drive, second external gear 11 with internal gear 12 meshes and forms gear drive.

After the motor is powered on, the rotor core 6 drives the output shaft 28 to rotate, the output shaft 28 drives the first external gear 9 to rotate through the third external gear 8, the first external gear 9 drives the second external gear 11 to synchronously rotate through the rotating shaft 27, and the second external gear 11 is meshed with the internal gear 12 on the hub end cover 13, so that the whole hub shell 2 is driven to rotate.

The utility model discloses an in a specific embodiment, the push rod 25 includes cylindric slip iron core 31 and the coaxial locating lever 32 and the guide arm 33 that set up at slip iron core 31 both ends at the middle part, and the locating lever 32 is the polygon cylinder, like quadrangular, pentagonal prism, hexagonal prism etc. also can be for spline structure, as long as guarantee that the locating lever 32 inserts back in the constant head tank 29, output shaft 28 can not take place relative rotation with push rod 25 can, just the locating lever 32 is equipped with location shoulder 34 with the junction of slip iron core 31, the driving source passes through magnetic drive slip iron core 31 motion, slip iron core 31 drives the locating lever 32 inserts in the constant head tank 29 with locating lever 32 adaptation.

In a specific embodiment of the utility model, the driving source is including being cylindric drive coil 24 and permanent magnet 23, drive coil 24 and the coaxial inlaying of permanent magnet 23 are fixed on the first axis body 1, just permanent magnet 23 is located drive coil 24 is close to the one end of output shaft 28, push rod 25 is coaxial to be run through drive coil 24 and permanent magnet 23 form sliding connection, push rod 25's locating lever 32 orientation constant head tank 29 and with constant head tank 29 axial corresponds.

The utility model discloses a in a specific embodiment, the one end that permanent magnet 23 is close to output shaft 28 is equipped with rather than the holding ring 22 with the axle center, install rather than the ring form condom 21 with the axle center through interference fit on the holding ring 22, and the coaxial suit of condom 21 is in the outside of locating lever 32 forms sliding connection, and the shape in the hole that cooperates with locating lever 32 on the condom 21 is the same with locating groove 29 cross sectional shape, lets locating lever 32 can not rotate through condom 21, can only axial displacement, holding ring 22 passes through screw 26 to be fixed on the first axis body 1, screw 26's head location is in on the outer terminal surface of condom 21. Because the protective sheath is installed on holding ring 22 through interference fit, if the push rod 25 inserts the back in the constant head tank 29 because of unexpected mistake in the pivoted in-process of wheel hub shell 2, can drive the protective sheath through push rod 25 because of the huge moment of torsion that output shaft 28 rotation in-process produced and remove the clamp force of overcoming interference fit for push rod 25 can rotate with output shaft 28 synchronization, can prevent effectively that wheel hub shell 2 from being blocked dead suddenly, avoid damaging the emergence of motor and incident, prevent to take place accident.

In a specific embodiment of the present invention, the outer sleeve of the guide rod 33 is provided with a spring 30, two ends of the spring 30 respectively abut against the first shaft 1 and the sliding iron core 31, when the push rod 25 is completely retracted, the elastic force applied to the sliding iron core 31 by the spring 30 is smaller than the magnetic force applied to the sliding iron core 31 by the permanent magnet 23 at the inner side. The push rod 25 can be ensured to be always inserted into the positioning groove 29 through the spring 30 to keep a locking state, and the locking of the hub shell 2 can be kept after power failure.

When the locking mechanism is used, taking the view direction shown in fig. 2 as an example, when the locking mechanism is in an unlocked state, the driving coil 24 is not electrified, and because the length of the sliding iron core 31 on the left side of the permanent magnet 23 is greater than that on the right side, the right elastic force exerted by the spring 30 on the sliding iron core 31 is smaller than the left magnetic force exerted by the permanent magnet 23 on the sliding iron core 31, so that the sliding iron core 31 drives the positioning rod 32 to be always in a stable waiting position, and the output shaft 28 normally works; when the output shaft 28 needs to be locked, the driving coil 24 is powered on, after the driving coil 24 is powered on, a right magnetic force is applied to the sliding iron core 31, so that a left magnetic force applied to the sliding iron core 31 by the permanent magnet 23 is overcome, the sliding iron core 31 is further pushed to slide rightwards, the positioning rod 32 is inserted into the corresponding positioning groove 29 in the output shaft 28, the output shaft 28 cannot rotate, the hub shell 2 is further locked, then the driving coil 24 is powered off, because the length of the sliding iron core 31 on the left side of the permanent magnet 23 is smaller than that on the right side, the right elastic force applied to the sliding iron core 31 by the spring 30 is larger than the left magnetic force applied to the sliding iron core 31 by the permanent magnet 23, the positioning rod 32 can be always kept in a state of being inserted into the positioning groove 29, the hub shell 2 can also be locked in a power-off state, when the unlocking is needed, the sliding iron core 24 is powered on the reverse direction, after the driving coil 24 is powered on the sliding iron core 31 on the reverse direction, the left magnetic force is applied to the sliding iron core 31 by the spring 30, so that the elastic force and other external forces of the spring 30 are overcome, the sliding iron core 31 slides leftwards to the initial waiting position, the driving coil 31, the sliding iron core 31, the positioning rod 32 is always kept in a stable position, and the stable position of the driving coil 31.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. The utility model provides an in-wheel motor of inside lock car which characterized in that includes:

all install inside the wheel hub shell:

the rotor core is coaxially and rotatably arranged on the output shaft through a bearing group, the bearing group at least comprises a one-way bearing, and the outer circumferential surface of the rotor core is provided with magnetic steel;

the stator coil is installed between the first shaft body and the second shaft body, is coaxially arranged outside the magnetic steel, and forms a motor structure for driving the output shaft to rotate together with the magnetic steel and the rotor iron core;

the locking mechanism is arranged on the first shaft body and comprises a push rod and a driving source for driving the push rod to stretch, a positioning groove corresponding to the push rod is formed in the end part of the output shaft, the driving source drives the push rod to move, and the corresponding end part of the push rod is inserted into the positioning groove so as to lock the output shaft;

the push rod comprises a cylindrical sliding iron core in the middle, and a positioning rod and a guide rod which are coaxially arranged at two ends of the sliding iron core, a positioning shaft shoulder is arranged at the joint of the positioning rod and the sliding iron core, the driving source drives the sliding iron core to move through magnetic force, and the sliding iron core drives the positioning rod to be inserted into a positioning groove matched with the positioning rod;

the driving source comprises a driving coil and a permanent magnet which are cylindrical, the driving coil and the permanent magnet are coaxially embedded and fixed on the first shaft body, the permanent magnet is located at one end, close to the output shaft, of the driving coil, the push rod coaxially penetrates through the driving coil and the permanent magnet and forms sliding connection, and the positioning rod of the push rod faces the positioning groove and axially corresponds to the positioning groove.

2. The hub motor of claim 1, wherein the inner end of the first shaft body is provided with a rear cover body located inside the hub shell, the corresponding end of the output shaft is rotatably mounted on the rear cover body through a first bearing, the inner end of the second shaft body is provided with a front cover body located inside the hub shell, and the corresponding end of the output shaft is rotatably mounted on the front cover body through a second bearing.

3. The in-wheel motor for an inside lock vehicle according to claim 2, wherein both ends of the stator coil are fixed to the front cover and the rear cover, respectively, and a gap is provided between the stator coil and the magnetic steel.

4. The hub motor of claim 1, wherein one end of the hub shell is rotatably mounted to the first shaft via a third bearing, and the other end of the hub shell is rotatably mounted to the second shaft via a fourth bearing.

5. The hub motor of claim 4, wherein a split hub cover is mounted at one end of the hub shell, the hub cover is rotatably mounted on the second shaft body through the fourth bearing, and an internal gear coaxial with the output shaft is arranged inside the hub cover.

6. The in-wheel motor for an internal lock vehicle according to claim 5, wherein the speed reducing mechanism includes a first external gear and a rotating shaft, the rotating shaft is rotatably mounted on the second shaft body through a fifth bearing, the rotating shaft is parallel to the second shaft body, the first external gear is coaxially mounted at one end of the rotating shaft, a second external gear integrally formed with the rotating shaft is coaxially disposed at the other end of the rotating shaft, the first external gear is engaged with a third external gear coaxially disposed at a corresponding end of the output shaft to form a gear transmission, and the second external gear is engaged with the internal gear to form a gear transmission.

7. The in-wheel motor of an internal lock vehicle of claim 1, wherein one end of the permanent magnet close to the output shaft is provided with a positioning ring which is coaxial with the permanent magnet, the positioning ring is provided with a circular ring-shaped safety sleeve which is coaxial with the positioning ring through interference fit, the safety sleeve is coaxially sleeved outside the positioning rod and forms sliding connection, the positioning ring is fixed on the first shaft body through a screw, and the head of the screw is positioned on the outer end face of the safety sleeve.

8. The in-wheel motor of claim 7, wherein the guide rod is sleeved with a spring, two ends of the spring respectively abut against the first shaft and the sliding iron core, and when the push rod is fully retracted, the spring exerts an elastic force on the sliding iron core smaller than a magnetic force exerted by the permanent magnet on the sliding iron core at the inner side.