CN214689011U - Speed change wheel hub and vehicle with same - Google Patents

Abstract

The utility model discloses a speed-changing hub and vehicle with the same, the speed-changing hub comprises a shell, a main shaft, a motor, a speed-changing component, a differential component, a plurality of first gears and a second gear, the inner peripheral surface of the shell is provided with a gear ring, the main shaft is arranged on the shell along the axial direction, the speed-changing component and the differential component are sleeved on the main shaft, the motor is connected with the speed-changing component, the differential component comprises a plurality of differential sleeves, the differential sleeves are sleeved on the speed-changing component, the speed-changing component is selectively connected with one of the differential sleeves, the first gear sleeves are arranged on the periphery of the differential sleeves, each first gear corresponds to one differential sleeve, the gear teeth number of the first gears are different, the second gear comprises a plurality of gear sections which are connected with each other, the gear teeth number of the gear sections are different from that of the other gear sections, each gear section corresponds to one first gear, one of the plurality of gear segments is in meshing engagement with the ring gear. The utility model discloses variable speed wheel hub's functioning speed and output torque adjust conveniently.

Description

Speed change wheel hub and vehicle with same

Technical Field

The utility model relates to a vehicle technical field specifically, relates to a variable speed wheel hub and vehicle that has this variable speed wheel hub.

Background

The power part of electric motor car adopts brushless in-wheel motor, and at the in-process of riding, if meet the abrupt slope, the drive power of electric motor car is difficult to promote fast, has the problem of climbing difficulty, and when the road surface is mild or little downhill path, its vehicle speed also is difficult to promote fast, therefore the demand of variable speed motor among the correlation technique is in due charge to the emergence to promote the vehicle and exert corresponding demand performance in the scene of riding of difference.

However, in the related art, the variable speed motor has difficulty in adjusting the output torque and the rotation speed, and is difficult to meet the driving requirements of the vehicle under different road conditions.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of an aspect of the present invention provides a speed-changing hub, the rotational speed and the output torque of the speed-changing hub are convenient to adjust, which is beneficial to different driving states.

An embodiment of another aspect of the present application is directed to a vehicle.

According to the utility model discloses a variable speed wheel hub of the embodiment of first aspect includes: a housing having a cavity with a ring gear on an inner circumferential surface thereof; the main shaft penetrates through the shell along the axial direction of the main shaft, and at least part of the main shaft is positioned in the cavity; the motor is arranged in the cavity and is arranged on the shell; the speed change assembly is arranged in the cavity and sleeved on the main shaft, and the motor is connected with the speed change assembly to drive the speed change assembly to rotate along the circumferential direction of the main shaft; a differential assembly disposed within the cavity and including a plurality of differential bushings disposed on the shift assembly, the shift assembly being selectively connectable with one of the plurality of differential bushings; the first gears are arranged in the cavities, the first gears are sleeved on the periphery of the differential sleeve, each first gear corresponds to one differential sleeve, the number of teeth of any one first gear in the first gears is different from that of the other first gears, and the inner peripheral surfaces of the first gears are connected with the differential sleeves; a second gear, the second gear is established in the cavity and with the casing links to each other, the second gear is relative the casing is rotatable, the second gear includes a plurality of gear sections that link to each other, and is a plurality of the number of teeth of any gear section of gear section is different with the number of teeth of the other gear sections, the gear section with first gear engagement, every the gear section with one first gear corresponds, and is a plurality of one in the gear section with ring gear engagement.

According to the utility model discloses speed change wheel hub, through setting up the different first gear of second gear and a plurality of number of teeth, and the different gear section of a plurality of numbers of teeth of second gear corresponds the meshing with a plurality of first gears, utilize differential subassembly and speed change subassembly selectively to control one in the first gear and the gear section that corresponds to come into operation, can adjust speed change wheel hub's functioning speed and output torque, be favorable to the vehicle when different road conditions travel, the quick adjustment driving state.

In some embodiments, the differential assembly further comprises: the differential support is sleeved on the periphery of the corresponding differential sleeve, the first gear is sleeved on the periphery of the differential support, the differential sleeves, the differential supports and the first gears are in one-to-one correspondence, the peripheral surface of each differential sleeve is provided with a plurality of clamping teeth arranged along the circumferential direction of the differential sleeve, and the differential support is provided with a plurality of roller grooves arranged at intervals along the circumferential direction of the differential support; the rollers are matched in the roller grooves and abutted against the clamping teeth, the rollers are in contact with the inner circumferential surface of the first gear, and the rollers, the roller grooves and the clamping teeth are in one-to-one correspondence.

In some embodiments, the differential assembly further comprises a tension spring, the tension spring is arranged between the differential sleeve and the differential support, one end of the tension spring is connected with the differential sleeve, the other end of the tension spring is connected with the differential support, and the tension spring is used for clamping the latch and the roller.

In some embodiments, the inner peripheral surface of the differential case is provided with a first groove and a second groove which are oppositely arranged in a radial direction of the differential case, the transmission assembly includes: the speed change sleeve is rotatably sleeved on the main shaft and is connected with the motor, a first sliding groove and a second sliding groove which extend along the axial direction of the main shaft are formed in the peripheral wall of the speed change sleeve, and the first sliding groove and the second sliding groove are opposite in the radial direction of the main shaft; a speed-changing wheel movably fitted in the speed-changing sleeve to be selectively connected with one of the plurality of differential sleeves, and having a first projection and a second projection on an outer circumference thereof, the first projection being fitted in the first groove through the first runner, and the second projection being fitted in the second groove through the second runner.

In some embodiments, the inner periphery of the gearbox wheel is provided with a raised ring, the gearbox hub further comprising a push assembly comprising: a pushing member which is fitted in the gearbox wheel and abuts against the convex ring; the push rod assembly penetrates through the shell in a movable mode along the axial direction of the spindle, one end of the push rod assembly abuts against the pushing piece, and the other end of the push rod assembly extends out of the shell and is used for pushing the pushing piece to drive the variable-speed wheel to move in the radial direction of the spindle.

In some embodiments, the transmission assembly further includes a limiting ring, the limiting ring is sleeved on the main shaft and is fitted in the gearbox wheel, and the limiting ring is arranged on one side of the pushing member away from the convex ring and is used for limiting the pushing member to move relative to the gearbox wheel in the axial direction of the main shaft.

In some embodiments, the main shaft has an avoidance groove extending through the main shaft in a radial direction of the main shaft and extending in an axial direction of the main shaft, and the pushing member is fitted in the avoidance groove.

In some embodiments, the push rod assembly includes a first push rod, a second push rod, an elastic member, and a slide rod, the first push rod and the second push rod are opposite and spaced apart in the axial direction of the main shaft, one end of the second push rod is in contact with the pushing member, the other end of the second push rod is connected to one end of the slide rod, the first push rod has a chamber opening toward the first push rod, the other end of the slide rod extends into the chamber, and the first push rod and the slide rod are movable relative to each other, the elastic member is sleeved on the slide rod, one end of the elastic member is connected to the first push rod, and the other end of the elastic member is connected to the second push rod.

In some embodiments, the transmission assembly further includes a reset member, the reset member is disposed in the transmission sleeve, one end of the reset member is connected to the transmission sleeve, the other end of the reset member abuts against the transmission wheel, and the reset member has a force that drives the transmission wheel to move toward the push rod assembly.

A vehicle according to an embodiment of the second aspect of the present invention includes the transmission hub of the above-described embodiment.

According to the utility model discloses the vehicle, through adopting above-mentioned variable speed wheel hub, the speed of a motor vehicle is adjusted conveniently, and vehicle climbing ability is strong, is favorable to the vehicle when different road conditions travel, quick adjustment driving state.

Drawings

Fig. 1 is an exploded view of a transmission hub according to an embodiment of the present invention.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is an enlarged view of a portion B in fig. 1.

Fig. 4 is an enlarged view of a portion C in fig. 1.

Fig. 5 is an enlarged view of a portion D in fig. 1.

Fig. 6 is a cross-sectional view of a transmission hub according to an embodiment of the present invention in a state of climbing a slope.

Fig. 7 is a sectional view of a transmission hub according to an embodiment of the present invention in a gentle driving state.

Fig. 8 is a cross-sectional view of a transmission hub according to an embodiment of the present invention in a slight downhill driving condition.

Reference numerals:

a transmission hub 1;

a housing 10; a ring gear 101;

a main shaft 20; an avoidance slot 201;

a motor 30;

a shift assembly 40; a change wheel 401; the first projection 4011; the second protrusion 4012; a convex ring 4013;

a shift sleeve 402; a barrel 4021; a mounting portion 4022; a first runner 4023; a second runner 4024; limit of

A bit ring 403;

a differential assembly 50; a differential housing 501; the latch 5011; the first slot 5012; the second slot 5013;

a differential carrier 502; a roller groove 503; a roller 504; a tension spring 505;

a first gear 60;

a second gear 70; a gear holder 701; a gear segment 702; mounting a shaft 703;

a pushing assembly 80; a pusher 801; a pushrod assembly 802; a first push rod 8021; a second push rod 8022;

a slide bar 8023; the elastic member 8024;

a reset member 90.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1 to 8, the transmission hub 1 according to the embodiment of the present invention includes a housing 10, a main shaft 20, a motor 30, a transmission assembly 40, a differential assembly 50, a plurality of first gears 60, and a second gear 70.

The housing 10 has a cavity, the inner peripheral surface of the cavity has a ring gear 101, the main shaft 20 is axially inserted through the housing 10, and at least a part of the main shaft 20 is located in the cavity. As shown in fig. 1 and 6, the main shaft 20 is inserted into the housing 10 in the left-right direction, both left and right ends of the main shaft 20 extend out of the housing 10, and a ring gear 101 surrounding the main shaft 20 is provided on an inner circumferential surface of the housing 10. The main shaft 20 and the housing 10 are fixedly connected, and the main shaft 20 and the housing 10 are not rotatable relative to each other.

The motor 30, the speed changing assembly 40, the differential assembly 50, the first gear 60 and the second gear 70 are all arranged in the cavity, the motor 30 is connected with the shell 10, the speed changing assembly 40 is sleeved on the main shaft 20, and the motor 30 is connected with the speed changing assembly 40 to drive the speed changing assembly 40 to rotate along the circumferential direction of the main shaft 20. As shown in fig. 1, the motor 30 is connected to the left side wall of the housing 10, the speed change assembly 40 is located at the right side of the motor 30, and the output portion of the motor 30 (the rotor of the motor 30 in fig. 1) is connected to the speed change assembly 40, and the speed change assembly 40 and the rotor are rotatable in synchronization.

The differential assembly 50 is disposed in the cavity and includes a plurality of differential sleeves 501, the plurality of differential sleeves 501 are sleeved on the speed change assembly 40, and the speed change assembly 40 is selectively connected with one of the plurality of differential sleeves 501. As shown in fig. 1 and 6, a plurality of differential cases 501 are arranged on the outer periphery of the transmission assembly 40 in the axial direction of the main shaft 20, and the transmission assembly 40 can be connected with only one differential case 501 in different driving states.

The first gears 60 are sleeved on the periphery of the differential sleeve 501, each first gear 60 corresponds to one differential sleeve 501, the number of teeth of any one first gear 60 in the plurality of first gears 60 is different from the number of teeth of the other first gears 60, and the inner peripheral surface of the first gear 60 is connected with the differential sleeve 501. Specifically, as shown in fig. 1, the number of the first gears 60 is equal to the number of the differential sleeves 501, each first gear 60 is sleeved on the outer periphery of the corresponding differential sleeve 501, and the inner peripheral surface of the first gear 60 is connected with the outer peripheral surface of the differential sleeve 501 (the connection may be direct connection or indirect connection), so that the differential sleeve 501 can drive the first gear 60 to rotate.

The second gear 70 is connected to the housing 10 and rotatable with respect to the housing 10, the second gear 70 includes a plurality of gear segments 702 connected to each other, the number of teeth of any one gear segment 702 of the plurality of gear segments 702 is different from the number of teeth of the remaining gear segments 702, the gear segments 702 are engaged with the first gears 60, each gear segment 702 corresponds to one first gear 60, and one of the plurality of gear segments 702 is engaged with the ring gear 101. In other words, the plurality of gear segments 702 and the plurality of first gears 60 are correspondingly engaged to form a plurality of sets of transmission structures, and the transmission ratio of each set of transmission structures is different.

As shown in fig. 1 and 6, the second gear 70 is connected to the housing 10 through a gear support 701, a mounting shaft 703 extending along the axial direction of the spindle 20 is provided on the gear support 701, the second gear 70 is sleeved on the mounting shaft 703, a plurality of gear segments 702 of the second gear 70 are stacked and distributed along the axial direction of the spindle 20, and the second gear 70 is located between the first gear 60 and the gear ring 101 to simultaneously mesh with the first gear 60 and the gear ring 101.

It can be understood that the power take-off process of the gear hub 1 is as follows:

the motor 30 drives the speed change assembly 40 to rotate along the circumferential direction of the main shaft 20, the speed change assembly 40 is connected with one of the plurality of differential sleeves 501 to drive the differential sleeves 501 and the first gear 60 sleeved on the differential sleeves 501 to rotate, the first gear 60 can drive the second gear 70 to rotate through meshing with the corresponding gear section 702, and the second gear 70 drives the hub to integrally rotate through meshing with the gear ring 101, so that the vehicle runs.

Further, since different differential sleeves 501 correspond to different first gears 60 and gear segments 702, in the power output process, according to different driving states, the speed change assembly 40 can be selectively connected with the differential sleeves 501 meeting requirements, so that the transmission structures (the corresponding first gears 60 and gear segments 702) corresponding to the differential sleeves 501 are put into operation, and the running speed and the output torque of the wheel hub are adjusted.

For example, as shown in fig. 8, in the uphill state, the transmission unit 40 can be connected to the leftmost differential carrier 501, and at this time, the first gear 60 having the largest number of gear teeth and the gear stage 702 corresponding thereto are operated, and the gear ratio between the first gear 60 and the second gear 70 is large, so that the speed of the hub is reduced, the output torque is increased, and the uphill smoothly occurs.

Further, when the vehicle travels on a gentle or slightly downhill road, as shown in fig. 6 and 7, the first gear 60 having a smaller number of gear teeth is appropriately selected so that the transmission structure having a smaller transmission ratio is put into operation, the hub speed is increased, the output torque is reduced, and the vehicle traveling speed is increased.

According to the utility model discloses speed change wheel hub, through setting up the different first gear of second gear and a plurality of number of teeth, and the different gear section of a plurality of numbers of teeth of second gear corresponds the meshing with a plurality of first gears, utilize differential subassembly and speed change subassembly selectively to control one in the first gear and the gear section that corresponds to come into operation, can adjust speed change wheel hub's functioning speed and output torque, be favorable to the vehicle when different road conditions travel, the quick adjustment driving state.

In some embodiments, as shown in fig. 1, the differential assembly 50 further includes a plurality of differential brackets 502 and a plurality of rollers 504, the differential brackets 502 are disposed on the outer peripheries of the corresponding differential sleeves 501, the first gear 60 is disposed on the outer periphery of the differential bracket 502, the plurality of differential sleeves 501, the plurality of differential brackets 502 and the plurality of first gears 60 are in one-to-one correspondence, the outer peripheral surface of the differential sleeve 501 is provided with a plurality of latches 5011 disposed along the circumferential direction of the differential sleeve 501, the differential bracket 502 is provided with a plurality of roller 504 slots 503 disposed at intervals along the circumferential direction of the differential bracket 502, the rollers 504 are fitted in the roller 504 slots 503 and abut against the latches 5011, the rollers 504 are in contact with the inner peripheral surface of the first gear 60, and the plurality of rollers 504, the plurality of roller 504 slots 503 and the plurality of latches 5011 are in one-to one correspondence.

As shown in fig. 1, a plurality of differential supports 502 are arranged at intervals in the axial direction of the main shaft 20, the differential supports 502 are fitted over the corresponding differential housing 501, a plurality of roller 504 grooves 503 on the differential supports 502 are opposed to a plurality of snap teeth 5011 on the corresponding differential housing 501, and the snap teeth 5011 can snap the rollers 504 provided in the roller 504 grooves 503 to press the rollers 504 against the inner peripheral surface of the first gear 60.

It can be understood that when the differential sleeve 501 rotates, the differential sleeve 501 can drive the corresponding differential bracket 502 to rotate through the abutment of the latch 5011 and the roller 504, and the roller 504 can drive the first gear 60 to rotate due to the large tension between the roller 504 and the inner circumferential surface of the first gear 60. Therefore, redundant connecting pieces do not need to be arranged between the first gear and the differential assembly, the assembly difficulty is favorably reduced, and the problem that the connecting pieces are broken cannot be caused when the rotating speed of the first gear exceeds the differential assembly.

Further, as shown in fig. 6, the differential assembly 50 further includes a tension spring 505, the tension spring 505 is disposed between the differential housing 501 and the differential bracket 502, one end of the tension spring 505 is connected to the differential housing 501, the other end of the tension spring 505 is connected to the differential bracket 502, and the tension spring 505 is used for clamping the latch 5011 and the roller 504.

From this, the extension spring can guarantee that the inner peripheral surface of roller and first gear is laminated all the time, and when the rotational speed of differential subassembly exceeded first gear, the differential subassembly can mesh with first gear in the twinkling of an eye to drive first gear revolve, thereby can improve the sensitivity of variable speed wheel hub variable speed.

In some embodiments, as shown in fig. 1 and 2, the inner peripheral surface of the differential sleeve 501 is provided with a first groove 5012 and a second groove 5013, the first groove 5012 and the second groove 5013 are arranged opposite to each other in the radial direction of the differential sleeve 501, the transmission assembly 40 includes a transmission sleeve 402 and a transmission wheel 401, the transmission sleeve 402 is rotatably sleeved on the main shaft 20, the transmission sleeve 402 is connected to the motor 30, the peripheral wall of the transmission sleeve 402 is provided with a first sliding groove 4023 and a second sliding groove 4024 extending in the axial direction of the main shaft 20, and the first sliding groove 4023 is opposite to the second sliding groove 4024 in the radial direction of the main shaft 20.

As shown in fig. 1 and 4, the speed change sleeve 402 has a mounting portion 4022 and a cylindrical member 4021, the mounting portion 4022 is annularly provided at the left end of the cylindrical member 4021, the mounting portion 4022 is connected to the motor 30, a first slide groove 4023 and a second slide groove 4024 extending in the left-right direction are provided on the peripheral wall of the cylindrical member 4021, and the first slide groove 4023 and the second slide groove 4024 are symmetrical with respect to the main shaft 20.

The transmission wheel 401 is movably fitted in the transmission sleeve 402 to be selectively connected with one of the plurality of differential sleeves 501, and the transmission wheel 401 has a periphery having a first projection 4011 and a second projection 4012, the first projection 4011 being fitted in the first recess 5012 through the first runner 4023, and the second projection 4012 being fitted in the second recess 5013 through the second runner 4024. In other words, the first projection 4011 and the second projection 4012 can guide the transmission wheel 401 to slide in the left-right direction within the cylindrical member 4021, and the engagement of the second projection 4012 with the second recess 5013 realizes the selective engagement of the transmission wheel 401 with one of the differential covers 501 by the engagement of the first projection 4011 with the first recess 5012.

From this, the slip orbit of change gear can be injectd to first spout and second spout to avoid leading to the unable cooperation of change gear and differential cover because of the slip deviation, and in the week of main shaft, the cooperation of arch and recess can carry on spacingly to the assembly of change gear and differential cover, in order to realize the synchronous rotation of change gear and differential cover, in the axial of main shaft, remove the change gear and can make arch and recess cooperation or separation, thereby be convenient for the change gear selectively with a cooperation in a plurality of differential covers, make things convenient for the variable speed to adjust.

In some embodiments, as shown in fig. 1 and 4, a convex ring 4013 is provided on an inner circumferential surface of the gearbox wheel 401, the gearbox hub 1 further includes a pushing assembly 80, the pushing assembly 80 includes a pushing member 801 and a push rod assembly 802, the pushing member 801 is fitted in the gearbox wheel 401 and abuts against the convex ring 4013, the push rod assembly 802 is movably disposed on the housing 10 along an axial direction of the main shaft 20, one end of the push rod assembly 802 abuts against the pushing member 801, and the other end of the push rod assembly 802 extends out of the housing 10 for pushing the pushing member 801 to drive the gearbox wheel 401 to move in a radial direction of the main shaft 20

As shown in fig. 1, the pushing member 801 is located at the right side of the convex ring 4013, the push rod assembly 802 is movably inserted into the housing 10 in the left-right direction, the left end of the push rod assembly 802 abuts against the pushing member 801, the right end of the push rod assembly 802 extends out of the housing 10, and the push rod assembly 802 can push the pushing member 801, so as to push the gear change wheel 401 to move in the left-right direction, so that the gear change wheel 401 can be selectively engaged with one of the plurality of differential sleeves 501.

In some embodiments, as shown in fig. 1 and 4, the speed changing assembly 40 further includes a limiting ring 403, the limiting ring 403 is sleeved on the main shaft 20 and is fitted in the speed changing wheel 401, and the limiting ring 403 is arranged on a side of the pushing member 801 far from the convex ring 4013 for limiting the pushing member 801 from moving in the axial direction of the main shaft 20 relative to the speed changing wheel 401. As shown in FIG. 1, the retainer ring 403 is located on the right side of the pushing member 801, and the retainer ring 403 abuts against the right side of the pushing member 801, so as to prevent the pushing member 801 from slipping out of the gearbox wheel 401.

In some embodiments, as shown in fig. 1 and 2, the main shaft 20 has an avoiding groove 201 extending through the main shaft 20 in a radial direction of the main shaft 20 and in an axial direction of the main shaft 20, and the pushing member 801 is fitted in the avoiding groove 201. It can be understood that, because the pushing member 801 is fitted in the gearbox wheel 401 and the main shaft 20 passes through the gearbox wheel 401, the escape groove 201 can provide an assembly space for the pushing member 801, and the pushing member 801 is prevented from interfering with the main shaft 20.

In some embodiments, as shown in fig. 1 and 5, the push rod assembly 802 includes a first push rod 8021, a second push rod 8022, an elastic member 8024 and a slide rod 8023, the first push rod 8021 and the second push rod 8022 are opposite and spaced apart in the axial direction of the main shaft 20, one end of the second push rod 8022 is in contact with the pushing member 801, the other end of the second push rod 8022 is connected to one end of the slide rod 8023, the first push rod 8021 has a cavity opening toward the first push rod 8021, the other end of the slide rod 8023 extends into the cavity, the first push rod 8021 and the slide rod 8023 are relatively movable, the elastic member 8024 is sleeved on the slide rod 8023, one end of the elastic member 8024 is connected to the first push rod 8021, and the other end of the elastic member 8024 is connected to the second push rod 8022.

As shown in fig. 5, the first push rod 8021 and the second push rod 8022 are opposite and spaced apart in the left-right direction, the slide rod 8023 is located between the first push rod 8021 and the second push rod 8022, the left end of the second push rod 8022 extends into the housing 10 and abuts against the pushing member 801, the right end of the second push rod 8022 is connected to the left end of the slide rod 8023, the left end surface of the first push rod 8021 has a cavity (not shown) opened to the left, the right end of the slide rod 8023 extends into the cavity, and in a natural state (which can be understood as a non-pushing state), a certain stroke is provided between the bottom wall of the cavity and the right end of the slide rod 8023, so that the first push rod 8021 can move relative to the slide rod.

The elastic element 8024 is sleeved on the sliding rod 8023, one end of the elastic element 8024 is connected to the first push rod 8021, and the other end of the elastic element 8024 is connected to the second push rod 8022. As shown in fig. 5, the elastic element 8024 is located between the first push rod 8021 and the second push rod 8022, a left end of the elastic element 8024 is connected to a right end of the second push rod 8022, and a right end of the elastic element 8024 is connected to a left end of the first push rod 8021.

It will be appreciated that, since the first and second recesses 5012 and 5013 of the differential housing 501 are engaged with the first and second projections 4011 and 4012 of the gearbox wheel 401, it is necessary that the first recess 5012 is opposed to the first projection 4011 in the radial direction of the main shaft 20 and the second recess 5013 is opposed to the second projection 4012 in the radial direction of the main shaft 20, and thus, there are two states when the push assembly 80 pushes the gearbox wheel 401 to move, specifically:

when the pushing assembly 80 pushes the gearbox wheel 401 to move, the bulge of the gearbox wheel 401 is opposite to the groove of the differential housing 501 in the radial direction of the main shaft 20, and the gearbox wheel 401 and the pushing assembly 80 move synchronously until the gearbox wheel 401 is matched with the corresponding differential housing 501 completely.

Or, when the pushing assembly 80 pushes the gearbox wheel 401 to move, the protrusion of the gearbox wheel 401 is not opposite to the groove of the differential sleeve 501 in the radial direction of the main shaft 20, at this time, the first push rod 8021 moves towards the second push rod 8022 along the slide rod to compress the elastic member 8024 and keep the elastic member 8024 in a compressed state, and along with the rotation of the gearbox wheel 401, when the gearbox wheel 401 rotates to a position capable of being matched with the differential sleeve 501, the elastic force of the elastic member 8024 pushes the second push rod 8022 to move so as to push the gearbox wheel 401 to be matched with the corresponding differential sleeve 501. It should be noted that, in a state where the transmission wheel 401 is rotating at a high speed, the transmission wheel 401 can rotate to the engageable position in a very short time, and thus, the user can adjust the gear change of the hub at any point of time without substantially affecting the sensitivity of the adjustment.

In some embodiments, as shown in fig. 1 and 3, the shifting assembly 40 further includes a reset member disposed in the shifting sleeve 402, one end of the reset member being connected to the shifting sleeve 402, and the other end of the reset member abutting against the transmission wheel 401, the reset member having a force to drive the transmission wheel 401 toward the push rod assembly 802.

It can be understood that, under a condition of a road, the pushing assembly 80 pushes the gear 401 to move forward (the gear 401 moves leftward as shown in fig. 1) and makes the gear 401 engage with the corresponding differential sleeve 501, when the road condition changes and the gear 401 needs to move backward (the gear 401 moves rightward as shown in fig. 1), the pushing assembly 80 releases the pushing force on the gear 401, and the reset member pushes the gear 401 to move backward and makes the gear 401 engage with the corresponding differential sleeve 501, so as to complete the gear shift adjustment.

Specifically, as shown in fig. 3, the reset member may be a spring, and when the gearbox wheel 401 moves forward, the reset member is compressed, and after the pushing force of the pushing assembly 80 on the gearbox wheel 401 is released, the reset member rebounds to push the gearbox wheel 401 to move reversely.

According to the utility model discloses vehicle includes according to the utility model discloses variable speed wheel hub 1.

According to the utility model discloses the vehicle, through adopting above-mentioned variable speed wheel hub, the speed of a motor vehicle is adjusted conveniently, and vehicle climbing ability is strong, is favorable to the vehicle when different road conditions travel, quick adjustment driving state.

A transmission hub according to one specific example of the present invention is described below with reference to fig. 1 to 8.

As shown in fig. 1 to 8, the gear shift hub 1 according to the embodiment of the present invention includes a housing 10, a main shaft 20, a motor 30, a differential assembly 50, a shift assembly 40, a pushing assembly 80, a first gear 60, a second gear 70, a gear bracket 701, a limit ring 403, a reset member, and a tension spring 505.

The inner peripheral surface of the shell 10 is provided with a gear ring 101, the spindle 20 penetrates through the shell 10 along the left-right direction, the motor 30, the differential assembly 50, the speed change assembly 40, the pushing assembly 80, the first gear 60, the second gear 70, the gear bracket 701 and the limiting ring 403 are arranged in the shell 10, the motor 30 and the gear bracket 701 are arranged at intervals along the left-right direction, the motor 30 and the gear bracket 701 are connected with the shell 10, the left end of the pushing assembly 80 extends into the shell 10, the right end of the pushing assembly 80 extends out of the shell 10, the pushing rod assembly 802 can move in the left-right direction relative to the shell 10, the speed change assembly 40 is sleeved on the spindle 20 and is connected with the motor 30, the differential assembly 50 is sleeved on the speed change assembly 40, the first gear 60 is sleeved on the differential assembly 50, and the second gear 70 is meshed with the first gear 60 and the gear ring 101.

The speed change assembly 40 comprises a speed change sleeve 402 and a speed change wheel 401, the speed change sleeve 402 is sleeved on the main shaft 20, the speed change sleeve 402 comprises a cylindrical member 4021 and a mounting part 4022 annularly arranged at the left end of the cylindrical member 4021, the mounting part 4022 is connected with the motor 30, a first sliding groove 4023 and a second sliding groove 4024 extending along the left-right direction are arranged on the outer wall of the cylindrical member 4021, the first sliding groove 4023 is opposite to the second sliding groove 4024 in the radial direction of the main shaft 20, the speed change wheel 401 is provided with a first bulge 4011 and a second bulge 4012, the speed change wheel 401 is matched in the cylindrical member 4021, the first boss 4011 penetrates through the first sliding groove 4023 in the radial direction of the main shaft 20, the second boss 4012 penetrates through the second sliding groove 4024 in the radial direction of the main shaft 20, the speed change wheel 401 can slide in the cylindrical member 4021 in the left-right direction, the reset member is arranged in the cylindrical member 4021, one end of the reset member is connected with the cylindrical member 4021, and the other end of the reset member abuts against the speed change wheel 401 to provide a force for the speed change wheel 401 to move rightwards.

The differential assembly 50 comprises a plurality of differential sleeves 501 and a plurality of differential supports 502, the plurality of differential sleeves 501 are sleeved on the periphery of the cylindrical member 4021 and are arranged at intervals along the left-right direction, the plurality of differential supports 502 are correspondingly sleeved on the periphery of the plurality of differential sleeves 501, a tension spring 505 is arranged between the differential supports 502 and the differential sleeves 501, a first groove 5012 and a second groove 5013 are arranged on the inner circumferential surface of the differential sleeves 501, the first groove 5012 and the second groove 5013 are opposite in the radial direction of the spindle 20, a first protrusion 4011 is matched in the first groove 5012, a second protrusion 4012 is matched in the second groove 5013, a plurality of snap teeth 5011 are arranged on the outer circumferential surface of the differential sleeves 501, a plurality of roller 504 grooves 503 are arranged at intervals along the circumferential direction of the differential sleeves 501 are arranged on the differential sleeves 501, a plurality of roller 504 grooves 503 correspond to the plurality of snap teeth 5011, a roller 504 is arranged in the roller 504 grooves 503, and the tension spring 505 can clamp the snap teeth 5011 and the roller 504.

The first gears 60 are multiple, the number of teeth of the first gears 60 is different from each other, the multiple first gears 60 correspond to the multiple differential sleeves 501 and the multiple differential supports 502, the multiple first gears 60 are correspondingly sleeved on the peripheries of the multiple differential supports 502, and the rollers 504 are tightly attached to the inner circumferential surfaces of the first gears 60. The second gear 70 includes a plurality of gear segments 702, the plurality of first gears 60, the plurality of differential carriers 502, and the plurality of differential housings 501 correspond one to one, and the plurality of gear segments 702 are engaged with the corresponding first gears 60.

The pushing assembly 80 comprises a pushing member 801 and a push rod assembly 802, a convex ring 4013 is arranged in the gearbox wheel 401, the pushing member 801 is matched in the gearbox wheel 401 and abuts against the right side of the convex ring 4013, a limit ring 403 is matched in the gearbox wheel 401 and is positioned on the right side of the pushing member 801 to limit the pushing member 801 to move upwards in the axial direction of the spindle 20, the push rod assembly 802 comprises a first push rod 8021, a second push rod 8022, a slide rod 8023 and an elastic member 8024, the first push rod 8021 and the second push rod 8022 are opposite and spaced in the left-right direction, the slide rod 8023 is positioned between the first push rod 8021 and the second push rod 8022, the left end of the second push rod 8022 extends into the shell 10 and abuts against the pushing member 801, the right end of the second push rod 8022 is connected with the left end of the slide rod 8023, the left end face of the first push rod 8021 is provided with a cavity which is opened to the left, the right end of the slide rod 8023 extends into the cavity, the elastic member 8024 is positioned between the first push rod 8021 and the second push rod 8022, and the left end of the elastic member 8024 is connected with the right end of the second push rod 8022, the right end of the elastic member 8024 is connected to the left end of the first push rod 8021.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. A speed change hub, comprising:

a housing having a cavity with a ring gear on an inner circumferential surface thereof;

the main shaft penetrates through the shell along the axial direction of the main shaft, and at least part of the main shaft is positioned in the cavity;

the motor is arranged in the cavity and is arranged on the shell;

the speed change assembly is arranged in the cavity and sleeved on the main shaft, and the motor is connected with the speed change assembly to drive the speed change assembly to rotate along the circumferential direction of the main shaft;

a differential assembly disposed within the cavity and including a plurality of differential bushings disposed on the shift assembly, the shift assembly being selectively connectable with one of the plurality of differential bushings;

the first gears are arranged in the cavities, the first gears are sleeved on the periphery of the differential sleeve, each first gear corresponds to one differential sleeve, the number of teeth of any one first gear in the first gears is different from that of the other first gears, and the inner peripheral surfaces of the first gears are connected with the differential sleeves;

a second gear, the second gear is established in the cavity and with the casing links to each other, the second gear is relative the casing is rotatable, the second gear includes a plurality of gear sections that link to each other, and is a plurality of the number of teeth of any gear section of gear section is different with the number of teeth of the other gear sections, the gear section with first gear engagement, every the gear section with one first gear corresponds, and is a plurality of one in the gear section with ring gear engagement.

2. The shifting hub of claim 1, wherein the differential assembly further comprises: the differential support is sleeved on the periphery of the corresponding differential sleeve, the first gear is sleeved on the periphery of the differential support, the differential sleeves, the differential supports and the first gears are in one-to-one correspondence, the peripheral surface of each differential sleeve is provided with a plurality of clamping teeth arranged along the circumferential direction of the differential sleeve, and the differential support is provided with a plurality of roller grooves arranged at intervals along the circumferential direction of the differential support;

the rollers are matched in the roller grooves and abutted against the clamping teeth, the rollers are in contact with the inner circumferential surface of the first gear, and the rollers, the roller grooves and the clamping teeth are in one-to-one correspondence.

3. The transmission hub according to claim 2, wherein the differential assembly further comprises a tension spring, the tension spring is disposed between the differential sleeve and the differential bracket, one end of the tension spring is connected to the differential sleeve, the other end of the tension spring is connected to the differential bracket, and the tension spring is used for clamping the latch and the roller.

4. The shifting hub of claim 2, wherein the inner peripheral surface of the differential case is provided with a first groove and a second groove, the first groove and the second groove being oppositely disposed in a radial direction of the differential case, the shift assembly comprising:

the speed change sleeve is rotatably sleeved on the main shaft and is connected with the motor, a first sliding groove and a second sliding groove which extend along the axial direction of the main shaft are formed in the peripheral wall of the speed change sleeve, and the first sliding groove and the second sliding groove are opposite in the radial direction of the main shaft;

a speed-changing wheel movably fitted in the speed-changing sleeve to be selectively connected with one of the plurality of differential sleeves, and having a first projection and a second projection on an outer circumference thereof, the first projection being fitted in the first groove through the first runner, and the second projection being fitted in the second groove through the second runner.

5. The transmission hub of claim 4, wherein the inner circumferential surface of the gearbox wheel is provided with a raised ring, the transmission hub further comprising a pushing assembly comprising: a pushing member which is fitted in the gearbox wheel and abuts against the convex ring;

the push rod assembly penetrates through the shell in a movable mode along the axial direction of the spindle, one end of the push rod assembly abuts against the pushing piece, and the other end of the push rod assembly extends out of the shell and is used for pushing the pushing piece to drive the variable-speed wheel to move in the radial direction of the spindle.

6. The hub according to claim 5, wherein the transmission assembly further comprises a limiting ring, the limiting ring is fitted over the main shaft and fitted into the transmission wheel, and the limiting ring is provided on a side of the pushing member away from the protruding ring, for limiting the pushing member from moving in the axial direction of the main shaft relative to the transmission wheel.

7. The transmission hub of claim 5, wherein the main shaft has an escape groove extending through the main shaft in a radial direction of the main shaft and extending in an axial direction of the main shaft, and the urging member is fitted in the escape groove.

8. The hub according to claim 5, wherein the push rod assembly includes a first push rod, a second push rod, an elastic member, and a slide rod, the first push rod and the second push rod are opposite and spaced apart in the axial direction of the main shaft, one end of the second push rod is in contact with the pushing member, the other end of the second push rod is connected to one end of the slide rod, the first push rod has a chamber opened toward the first push rod, the other end of the slide rod protrudes into the chamber, and the first push rod and the slide rod are relatively movable,

the elastic piece is sleeved on the sliding rod, one end of the elastic piece is connected with the first push rod, and the other end of the elastic piece is connected with the second push rod.

9. The shifting hub of claim 5, wherein the shifting assembly further comprises a reset member disposed within the shift sleeve, wherein one end of the reset member is coupled to the shift sleeve and the other end of the reset member abuts the shift wheel, and wherein the reset member has a force that drives the shift wheel toward the push rod assembly.

10. A vehicle comprising a gear hub according to any one of claims 1 to 9.

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